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  1. A Gaudium et Spes e a Evangelii Gaudium: um estudo comparativo na perspectiva da conversão pastoral

    OpenAIRE

    Colletto, Raquel Maria de Paola

    2015-01-01

    A pesquisa volta-se para o atual contexto vivencial da Igreja, que sente grande dificuldade de transmitir a fé às novas gerações. Vive-se uma época de profundas mudanças. Constata-se que a crise na sociedade contemporânea e a crise eclesial não estão dicotomizadas, estão, na realidade, intimamente relacionadas. Encontra-se subjacente, nos documentos do Concílio Vaticano II, a necessidade de uma evangelização que conduza a um renovado empenho missionário. Esse processo está presente em toda tr...

  2. Estudo comparativo entre o método convencional e o método da peroxidase anti-peroxidase na pesquisa do parasitismo tissular na cardiopatia chagásica crônica

    Directory of Open Access Journals (Sweden)

    A. J. A. Barbosa

    1986-04-01

    Full Text Available Na maioria dos chagásicos crônicos o Trypanosoma cruzi não é detectado no tecido ou apresenta se com extrema raridade, mesmo quando é pesquisado exaustivamente. Sendo os métodos utilizados, até então, inespecíficos para a demonstração do T. cruzi, propôs-se no presente trabalho proceder ao estudo comparativo entre o método convencional (HE e o método imunocitoquímico pela peroxidase anti-peroxidase (PAP, na avaliação quantitativa do parasitismo. Selecionaram-se 3 casos de cardiopatia chagásica crônica e, de um mesmo fragmento de cada caso, obtiveram se cortes que foram corados pelo H.E. (média de 100 cortes por caso e, consecutivamente, outros que foram corados pelo PAP (média de 70 cortes por caso. O caso n.° 1 foi autopsiado em 1952 e apresentava parasitismo freqüente. Nos demais, o exame rotineiro foi negativo. Obtiveram-se os seguintes resultados expressos em n.° de ninhos/100 cortes, respectivamente, corados pelo H.E. e pelo P.A.P. (HE/PAP. Caso n.° 1 - 80/171; caso n.° 2 = 5/116 e caso n.° 3 = 1/2. Os resultados mostram que o método imunocitoquímico empregado, além de facilitar o diagnóstico do parasitismo, demonstra também pequenos ninhos de amastigotas que dificilmente seriam diagnosticados pelos métodos convencionais; além disso mostrou-se útil mesmo em tecido incluídos em parafina há longo tempo.

  3. Habilidades auditivas e afasia: um estudo comparativo

    OpenAIRE

    Nascimento, Maria da Soledade Rolim do

    2012-01-01

    A compreensão da informação recebida pela modalidade auditiva é um requisito importante para a efetividade da comunicação, especialmente na linguagem expressiva. Este trabalho teve como objetivo avaliar a relação das habilidades auditivas com o processo de compreensão da linguagem em pacientes com afasia. Trata-se de um estudo descritivo, transversal, comparativo, com 32 sujeitos, distribuídos em dois grupos: Grupo com afasia (n=16) e Grupo controle (n=16). Os indivíduos foram ...

  4. Governança Gestora na Rede de Negócios: um estudo comparativoGovernance in the Network Business Structure: a comparative studyGobernanza Gestora en la Red de Negocios: un estudio comparativo

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    KWASNICKA, Eunice Lacava

    2006-05-01

    Full Text Available RESUMOO presente artigo busca entender, na gestão de rede de negócios, a importância da estrutura organizacional formal para o sucesso da rede e como ela influencia esse resultado. A partir de uma profunda pesquisa bibliográfica sobre o tema, observamos que os autores são muito divergentes. A grande maioria considera que a estrutura formal impede a funcionalidade das redes, dentro de sua própria concepção. Para fundamentar essa idéia, usamos dois casos distintos na busca da estrutura de cada caso e seus efeitos no desempenho da rede. O resultado foi que a estrutura tem seu papel de destaque e nem sempre pode ser dispensada. Como objetivo secundário, propomos ampliar essa pesquisa envolvendo outros casos e outras variáveis, além das estudadas: poder, comunicação, liderança e cultura.ABSTRACTThis article seeks the comprehension in the management field of business networks about the importance of formal organizational structure to assure networks effectiveness. and how formal structure influences the final results. From a deep research of national and international articles on this subject we could assure there is a serious divergency in thought. Most authors consider that formal structure does not permit the functionality of the network. To prove this idea we use two distinct cases and study their structure and effect on results. The findings were that the structure has its important role and sometimes cannot be ignored. As a second objective we propose to involve more cases in this study and to introduce new This article seeks the comprehension in the management field of business networks about the importance of formal organizational structure to assure networks effectiveness and how formal structure influences the final results. From a deep research of national and international articles on this subject we could assure there is a serious divergence in thought. Most authors consider that formal structure does not permit the

  5. Effect of fasting time at farm and transport conditions of slaughter pigs on lairage resting behaviour and skin injuries EFEITO DO JEJUM NA GRANJA E CONDIÇÕES DE TRANSPORTE SOBRE O COMPORTAMENTO DOS SUÍNOS DE ABATE NAS BAIAS DE DESCANSO E LESÕES NA PELE

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    Jose Vicente Peloso

    2009-04-01

    %">: Carcass evaluation, heavy-weight slaughter pigs, pig skin injuries index, pig slaughter conditions, pre-slaughter management

     

    O objetivo deste trabalho foi avaliar a influência do tempo de jejum na granja (TJG= 9, 12, 15 e 18 horas e da posição do suíno no box da carroceria do caminhão (PBO= anterior, central e posterior, no piso da carroceria (PPI= inferior e superior e lado (PLA= direito e esquerdo sobre a ocorrência de lesões nos suínos e nas carcaças e no comportamento dos suínos nas baias de descanso no frigorífico. Utilizaram-se 192 fêmeas de abate com peso de abate de 133,1±10,9 kg oriundas de duas granjas. Verificou-se alta porcentagem de suínos com lesão na pele na granja (53,7%, no embarque (80,7%, no desembarque (91,2% e ao abate (95,8%. Suínos submetidos a TJG de 15 horas apresentaram menor incidência de lesão de pele no embarque e maior incidência de lesão no desembarque e, na carcaça, maior incidência de lesão originada por briga em relação aos suínos submetidos TJG de 12 horas. Os suínos transportados no box da frente apresentaram menor incidência de lesão por densidade na carcaça em relação aos transportados no meio do caminhão. Conclui-se que suínos submetidos a jejum de 15 horas apresentam maior incidência de lesão na pele. Suínos transportados no box  da frente apresentam menor incidência de lesão do que os transportados no meio. O tempo de jejum na granja não apresenta efeito sobre o comportamento dos animais nas baias de descanso do frigorífico.

    PALAVRAS-CHAVE: Avaliação de carcaças, condições de abate de suínos, escore de lesões, manejo pré-abate, suínos de abate pesados.

  6. Bupivacaína racêmica, levobupivacaína e ropivacaína em anestesia loco-regional para oftalmologia: um estudo comparativo Racemic bupivacaine, levobupi vacaine and ropivacaine in regional anesthesia for ophtalmology: a comparative study

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    Edno Magalhães

    2004-04-01

    Full Text Available OBJETIVO: A bupivacaína racêmica, utilizada largamente em anestesia peribulbar devido à boa qualidade de bloqueio motor, apresenta menor margem de segurança para cardiotoxicidade em relação a ropivacaína e bupivacaína levógira. O objetivo deste estudo foi comparar o grau de bloqueio motor e alteração da pressão intra-ocular (PIO em anestesia peribulbar produzida pela bupivacaína racêmica, levobupivacaína e ropivacaína. MÉTODOS: Noventa e sete pacientes, estado físico I e II da classificação da Sociedade Americana de Anestesiologistas, submetidos a anestesia peribulbar, foram divididos em três grupos: grupo A-(n=16 bupivacaína racêmica 0,75% com adrenalina 1:200.000; grupo B -(n=16 bupivacaína levógira 0,75% com adrenalina 1:200.000; grupo C -(n=15 ropivacaína 0,75%. Utilizou-se 7ml da solução anestésica com 280 UI de hialuronidase, em punção única no rebordo orbital inferior. Foram registrados a PIO e grau de bloqueio motor 5 minutos antes da punção e 1, 2, 3, 4, 5 e 10 minutos após a punção. O bloqueio motor foi avaliado pela escala de Nicoll. Para a análise estatística, foram utilizados os testes de Wilcoxon, análise de freqüência simples e t de Student. Foi considerado significativo pBACKGROUND AND OBJECTIVE: Racemic bupivacaine, used in peribulbar anesthesia owing to its high potential to promote motor blockade, presents a smaller safety margin for cardiotoxicity in relation to ropivacaine and levobupivacaine. The objective of this study was to compare the degree of motor blockade and alteration of intraocular pressure (IOP produced by racemic bupivacaine, levobupivacaine and ropivacaine in peribulbar block. METHOD: Ninety seven patients, ASA physical status I and II, submitted to peribulbar anesthesia, were randomly allocated into three groups: group A-(n=16 receiving racemic bupivacaine 0.75% with epinephrine 1:200.000; group B -(n=16 levobupivacaine 0.75% with epinephrine 1:200.000; group C -(n=15

  7. Environmental Abatement and Intergenerational Distribution

    NARCIS (Netherlands)

    Bovenberg, A.L.; Heijdra, B.J.

    1998-01-01

    This paper employs an overlapping generations model to explore the impact of public abatement on private investment and the intergenerational distribution of welfare. Whereas public abatement benefits old generations in terms of non-environmental welfare, future generations gain most in terms of

  8. Biological abatement of cellulase inhibitors

    Science.gov (United States)

    Bio-abatement uses a fungus to metabolize and remove fermentation inhibitors. To determine whether bio-abatement could alleviate enzyme inhibitor effects observed in biomass liquors after pretreatment, corn stover at 10% (w/v) solids was pretreated with either dilute acid or liquid hot water. The ...

  9. Custo marginal de abatimento de emissões de gases de efeito estufa na recuperação da pastagem = Marginal abatement cost of greenhouse gases emissions in pasture recovery

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    Willian Jun Kimura

    2016-10-01

    Full Text Available A demanda crescente por alimentos e as preocupações ambientais fizeram com que líderes governamentais incentivassem a adoção de tecnologias que possam aumentar a oferta de alimentos de forma sustentável. O objetivo com esse trabalho é valorar a mitigação de gases de efeito estufa através da recuperação de pastagem por meio do financiamento com a linha de crédito do Programa Agricultura de Baixa Emissão de Carbono, utilizando a ferramenta custo marginal de abatimento. Para alcançar os objetivos propostos, foram utilizados dados financeiros do Centro de Estudos Avançados em Economia Aplicada e da Confederação da Agricultura e Pecuária do Brasil e de emissões, do Painel Intergovernamental sobre Mudanças Climáticas e do Plano Agricultura de Baixa Emissão de Carbono para simular os custos anuais líquidos e as emissões líquidas da tecnologia atual e de abatimento, representadas por uma pecuária de baixa tecnologia e em pastagem recuperada, respectivamente. Os valores financeiros e de emissões da pecuária em pasto recuperado se apresentaram mais favoráveis quando comparados à pecuária de baixa tecnologia. Considerando esses dois fatores, chega-se a um custo marginal de abatimento de - R$ 24,72 por tCO2 equivalente. Desta maneira, a cada uma tonelada de gás carbônico equivalente mitigado pela recuperação da pastagem, o pecuarista tem um resultado financeiro de R$ 24,72 a mais do que se continuasse com uma pecuária de baixa tecnologia. Sendo assim, a recuperação de pastagem demostra ser uma prática que permite o aumento na produção de alimento de forma sustentável tanto ambientalmente quanto financeiramente. = Due to the growing demand for food and environmental concerns, government leaders have been driven to encourage the adoption of technologies which can increase the food supply in a sustainable way. This work aims to value greenhouse gas mitigation through pasture recovery by market incentives such as

  10. Doença de além-mar: estudos comparativos da oncocercose na América Latina e África Overseas disease: comparative studies of oncocercosis in Latin America and Africa

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    Magali Romero Sá

    2003-04-01

    Full Text Available A oncocercose é causada por um verme parasita, a Onchocerca, e transmitida pelo mosquito borrachudo, simuliídeo, podendo causar cegueira em seu estado agudo. Oriunda do continente africano onde é disseminada, foi descoberta na América Latina, na Guatemala, em 1917, com registros posteriores no México, Venezuela, Colômbia e Brasil. O estabelecimento da doença nas Américas tem intrigado os especialistas, e ainda hoje é uma questão em aberto. O projeto multidisciplinar descrito nesta nota de pesquisa objetiva investigar os aspectos históricos da introdução e disseminação da doença na América Latina, e realizar estudos comparativos sobre a história da doença nos dois continentes. A importância que adquiriu acarretou a revalorização das coleções de simuliídeos, cujas espécies brasileiras começaram a ser estudadas por Adolpho Lutz no início do século XX.Round worm is a parasite, Onchocerca, and is transmitted by a black fly, simuliídeo; it can cause blindness. Originally from the African continent, where it is widespread, in Latin America it was first discovered in Guatemala in 1917; later instances were recorded in Mexico, Venezuela, Colombia and Brazil. The establishment of this disease in the Americas has intrigued scientists since then and today it is an open question. The multidisciplinary project described in this research note aims to investigate historical aspects of the arrival and spread of the disease in Latin America and, to make comparative studies of the history of the disease on both continents. The increasing importance of the disease has meant greater value being attributed to collections of simuliídeo, whose Brazilian species were first studied by Adolpho Lutz at the beginning of the 20th century.

  11. Estudo calorimétrico comparativo do efeito da aplicação de herbicidas na atividade microbiana em diferentes solos

    OpenAIRE

    Gabriel Jeronymo Curti

    2014-01-01

    Resumo: Sabe-se que na agricultura a qualidade de um solo é dependente do tipo de manejo. No presente trabalho foi aplicada a microcalorimetria isotérmica para se investigar a influência do herbicida atrazina na atividade microbiana de um solo envelhecido de mata nativa, mantido a aproximadamente 4 °C, durante três anos. Além da utilização da microcalorimetria isotérmica, foram realizadas as análises de DSC e TG com a finalidade de se avaliar a quantidade de matéria orgânica presente no solo ...

  12. Opinião e espaço público na França e no Brasil: um estudo comparativo

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    Dievani Lopes Vital

    2015-06-01

    Full Text Available Este artigo visa comparar a expansão do espaço público na França de fins do Setecentos com aquela ocorrida em finais do Império no Brasil. Decorrente de uma pesquisa mais ampla, que investiga a apropriação e a ressignificação do ideário francês iluminista e revolucionário sobre as ideias e práticas políticas da chamada “Geração 1870” brasileira, a temática proposta leva em consideração a importância do desenvolvimento da imprensa periódica e a expansão das formas de sociabilidade intelectuais na França e no Brasil nos períodos mencionados. Para este segundo caso, são tomadas as considerações elaboradas pelo teórico Jürgen Habermas, para o qual a opinião pública moderna e o “espaço público político” nasceram da proliferação dos impressos e das formas de sociabilidade do século XVIII. Os conceitos operatórios de “opinião pública” e de “sociabilidade” tornam-se assim basilares na análise dos contextos daquelas sociedades, que experimentavam profundas transformações em suas estruturas políticas, quais sejam elas: a derrocada do Ancien Régime na França e a desestruturação do sistema político-imperial no Brasil.

  13. Estudo comparativo da apresentação clínica da pneumonia a Legionella e outras pneumonias adquiridas na comuuidade

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    Nieves Sopena

    1998-11-01

    Full Text Available RESUMO: A Legionella pneumophila (LP é considerada em muitos estudos como uma das três causas mais comuns de pneumonia adquirida na comunidade (2,4 e a segunda causa em termos de gravidade.O principal objectivo do presente estudo realizado no Hospital da Universidade Autónoma de Barcelona, foi comparar os diferentes aspectos clínicos, biológicos e radiológicos da Pneumonia a Legionella pneumophilla e das outras Pneumonias adquiridas oa comunidade (PAC, de modo a auxiliar o diagnóstico precoce da pneumonia a LP.Foi realizado um estudo prospectivo de 392 doentes com PAC. Procedeu-se à análise comparativa dos aspectos epidemiológicos (hospitalizações ou viagens recentes, residência próximo de escavações ou trabalhos de constrção, contacto com animais, aves, demográficos (idade e sexo, clinicos (febre, tosse, expectoração, toracalgia, dispneia, cefaleias, confusão mental, dor aboominal, náuseas, vómitos, diarreia, artromialgias, dias de evolução, antibioterapia prévia, patologiaassociada, analiticos (leucocitose, natrémia­Na, creatina Kinase-CK, aspartato aminotransferase­AST e radiológicos. Estes aspectos foram estudados em 48 doentes com PAC por LP e 125 doentes com PAC de outra etiologia (68 por Streptococcus pneumoniae, 41 por Clamydia pneumoniae, 5 por Mycoplasma pneumoniae, 4 por Coxiella burnetii, 3 por Pseudomonas aeruginosa, 2 por Haemophilus injluenzae e 2 por Nocardia.A análise unifactorial mostrou que a PAC por LP foi mais frequente hos doentes de meia idade, do sexo masculino, em saúde aparente, mas com hábitos alcoó1icos acentuados, relativamente aos doentes com PAC de outra etioçogia. Também a auseocia de resposta aos fármacos beta-lactamicos prévios, cefaleias, diarreia, hiponatrémia grave e a elevação dos níveis de creatina Kinase sérica (CK foram mais frequentes na PAC por LP, enquanto que a tosse, expectoração e a toracalgia., foram mais frequeotes na pneumonia bacteriana de outra

  14. Associação de fentanil ou sufentanil à bupivacaína a 0,5% isobárica em raquianestesia: estudo comparativo

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    Neves José Francisco Nunes Pereira das

    2002-01-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Desde a descoberta dos receptores opióides e um maior entendimento da neurofarmacologia da medula espinhal em relação à transmissão e inibição do impulso nociceptivo, tem aumentado o interesse na utilização de drogas por via subaracnóidea, em Anestesiologia e tratamento da dor. O presente estudo tem como finalidade avaliar prospectivamente a eficácia clínica da adição de fentanil (25 µg e sufentanil (5 µg à bupivacaína isobárica (10 mg,em pacientes submetidos à raquianestesia para tratamento cirúrgico de varizes de MMII. MÉTODO: Participaram do estudo 60 pacientes, estado físico ASA I e II, com idades abaixo de 60 anos, submetidos à raquianestesia para tratamento cirúrgico de varizes e divididos aleatoriamente em três grupos: B (bupivacaína isobárica 10 mg, BF (bupivacaína isobárica 10 mg e fentanil 25 µg e BS (bupivacaína isobárica 10 mg e sufentanil 5 µg.A raquianestesia foi realizada em decúbito lateral esquerdo, punção lombar entre L3-L4, com agulha de Quincke 27G. Após a raquianestesia foram avaliados: tempo de latência, o nível de bloqueio sensitivo e bloqueio motor. No período per-operatório foram anotados: hipotensão arterial, bradicardia, depressão respiratória, diminuição da saturação periférica da hemoglobina pelo oxigênio, náuseas, vômitos, prurido e tremor. No período pós-operatório foi pesquisado o tempo de analgesia. RESULTADOS: Os grupos foram homogêneos. O tempo de latência, o bloqueio motor e o tempo de analgesia não apresentaram diferença significativa. O nível de bloqueio sensitivo mostrou diferença entre o grupo controle e os grupos contendo opióides em todos os momentos estudados. Prurido foi o efeito colateral mais freqüente nos grupos contendo opióides. CONCLUSÕES: A adição de fentanil (25 µg e sufentanil (5 µg à bupivacaína a 0,5% isobárica (10 mg em raquianestesia altera o nível de bloqueio sensitivo.

  15. O PROCESSO DE IMPLANTAÇÃO DE NORMAS DE DESEMPENHO NA CONSTRUÇÃO: UM COMPARATIVO ENTRE A ESPANHA (CTE E BRASIL (NBR 15575/2013

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    Andrea Parisi Kern

    2015-02-01

    Full Text Available A preocupação com o desempenho das edificações é uma tendência mundial. No Brasil, em 2010, foi proposta a NBR 15.575, sob o título geral de Edifícios habitacionais até cinco pavimentos – Desempenho. Embora esteja em vigor as iniciativas de utilização do documento por profissionais da construção ainda são incipientes, tendo em vista a complexidade das questões que envolvem o conceito de desempenho e desafiam especialmente arquitetos e engenheiros projetistas. Por outro lado, na Europa é comum o uso de leis, normas ou códigos baseados no conceito de desempenho. Por exemplo, o Código Técnico das Edificações (CTE da Espanha que estabelece desempenho e durabilidade às edificações, em vigor desde 2007, relativamente bem sucedido. Esse artigo tem o objetivo de discutir o processo de implantação do CTE e comparar ao da NBR 15.575/2010. Como contribuições são apontadas algumas estratégias utilizadas na implantação do CTE que poderiam ser consideradas no Brasil tais como a implantação gradual, a criação de meio de comunicação entre responsáveis pela Norma e usuários, a definição de documentos e conteúdos para o cumprimento da norma para projetistas, programas de divulgação e discussão com principais fornecedores de cada área envolvida, e, por fim, a consideração de parâmetros da NBR 15.575/2010 na aprovação dos projetos pelo Município, no Brasil, Códigos de obras.

  16. Biological abatement of cellulase inhibitors.

    Science.gov (United States)

    Cao, Guangli; Ximenes, Eduardo; Nichols, Nancy N; Zhang, Leyu; Ladisch, Michael

    2013-10-01

    Removal of enzyme inhibitors released during lignocellulose pretreatment is essential for economically feasible biofuel production. We tested bio-abatement to mitigate enzyme inhibitor effects observed in corn stover liquors after pretreatment with either dilute acid or liquid hot water at 10% (w/v) solids. Bio-abatement of liquors was followed by enzymatic hydrolysis of cellulose. To distinguish between inhibitor effects on enzymes and recalcitrance of the substrate, pretreated corn stover solids were removed and replaced with 1% (w/v) Solka Floc. Cellulose conversion in the presence of bio-abated liquors from dilute acid pretreatment was 8.6% (0.1x enzyme) and 16% (1x enzyme) higher than control (non-abated) samples. In the presence of bio-abated liquor from liquid hot water pretreated corn stover, 10% (0.1x enzyme) and 13% (1x enzyme) higher cellulose conversion was obtained compared to control. Bio-abatement yielded improved enzyme hydrolysis in the same range as that obtained using a chemical (overliming) method for mitigating inhibitors. Copyright © 2013 Elsevier Ltd. All rights reserved.

  17. Tempo de jejum na granja sobre o perfil hormonal e os parâmetros fisiológicos em suínos de abate pesados Fasting time at farm on hormonal status and physiological parameters of heavy-weight slaughter pigs

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    Osmar Antonio Dalla Costa

    2008-11-01

    Full Text Available O objetivo deste estudo foi avaliar o tempo de jejum na granja e a posição dos animais na carroceria do caminhão durante o transporte ao abatedouro sobre o status hormonal e fisiológico de suínos de abate pesados visando obter melhorias no manejo pré-abate e reduzir perdas na qualidade de carne. Foram utilizadas 64 fêmeas com peso médio de 133+11kg, oriundas de duas granjas de terminação. Os tempos de jejum avaliados foram nove, 12, 15 e 18h, enquanto que as posições consideradas na carroceria foram box (frente, meio e atrás, piso (inferior e superior e lado (lateral direita e esquerda. Ao abate, foram medidos os níveis de glicose, lactato e CPK no sangue. A concentração de cortisol na saliva (CCS foi medida nas granjas (24 horas antes e após embarque e no abatedouro (logo após o descarregamento e antes do abate. A freqüência cardíaca foi monitorada durante todo o manejo pré-abate. Foi observado o efeito da interação entre TJG e o local de avaliação sobre a CCS e a freqüência cardíaca. A CCS e a freqüência cardíaca aumentaram significativamente da granja ao desembarque no abatedouro em relação ao descanso pré-abate no abatedouro foi observada uma redução (P0,05 os níveis de glicose, lactato e CPK no abate dos suínos.The aim of this study was to evaluate the effect of fasting time on the farm (TJG and the position of the animals on truck compartment during transport to slaughterhouse in the hormonal and physiological status of heavy-weight swine in order to obtain future management improvements and to reduce meat quality downgrades. Sixty-four females obtained from two farms and averaging 133+11kg body weight were used. Fasting time evaluated on farms were 9, 12, 15 and 18 h while the positions considered in the truck were Box (front, middle, and back, Deck (under and upper level e Side (right and left. Swine blood concentration of glucose, lactate and CPK were evaluated at slaughter. Cortisol concentration

  18. Estudo comparativo do uso tópico de própolis verde e vermelha na reparação de feridas em ratos

    Directory of Open Access Journals (Sweden)

    Lara Lívia Valença Batista

    Full Text Available OBJETIVO: Avaliar a ação cicatrizante de própolis verde e vermelha, correlacionando ao teor de flavonoides MÉTODOS: Foi realizada a quantificação de flavonoides totais dos extratos etanólicos de própolis verde e vermelha para posterior incorporação em pomada base a 20%. Utilizou-se 20 ratos Wistar distribuídos em quatro grupos: solução salina a 0,9% (S, pomada base (B, pomada própolis verde (G, pomada própolis vermelha (R, todos submetidos à confecção de lesões excisivas na região mediana do dorso. Os ratos foram tratados diariamente durante 15 dias. Neste período foram observados peso; temperatura corporal; diâmetro das feridas. Para análise histológica, amostras das feridas foram coletadas. Ao fim do experimento foram realizadas coleta sanguínea e remoção do rim e fígado para análises bioquímica e histológica. RESULTADOS: Os teores de flavonoides totais das própolis verde (4,50 % e vermelha (5,92 % foram elevados (>2 %, mas, embora a segunda apresente teor maior que a primeira, a evolução da própolis verde, macro e histologicamente, foi melhor na reparação das feridas. Não foram observadas nefro ou hepatotoxicidade, resultado corroborado pelos ensaios bioquímicos (TGP e albumina. A própolis influiu na redução de colesterol total, triglicerídeos e glicemia. CONCLUSÃO: Não foi possível correlacionar o teor de flavonoides totais com a ação cicatrizante da própolis. O dado revela a necessidade da elucidação dos flavonoides encontrados em cada classe de própolis para desvendar qual (ou quais flavonoide(s seria(m representativo(s no processo cicatricial.

  19. Estudo comparativo entre os métodos Pilates no solo e Water Pilates na qualidade de vida e dor de pacientes com lombalgia

    Directory of Open Access Journals (Sweden)

    Adriane Behring Bianchi

    2016-10-01

    Full Text Available Objetivo: comparar a eficácia dos métodos Pilates solo e Water Pilates, na qualidade de vida e dor de pacientes com lombalgia. Método: foram incluídos 20 pacientes do sexo feminino, com idade entre 18 a 25 anos, que apresentavam queixa de dor na região lombar. As participantes foram avaliadas, antes e após os protocolos de tratamento, em relação à qualidade de vida, pelo questionário Short Forms Health Survey (SF-36, e dor, pela Escala Visual Analógica (EVA. A amostra foi dividida aleatoriamente em dois grupos: Pilates Solo (PS e Water Pilates (WP. Cada grupo realizou dez sessões de tratamento, com frequência de duas vezes semanais e com duração de 40 minutos por sessão. Para a descrição dos dados foi utilizado média, desvio padrão, mínimo e máximo. Para comparar as variáveis inicias e finais foi utilizado o teste pareado de Wilcoxon e para comparação entre os dois grupos foi utilizado o teste de Mann-Whitney. O nível de significância adotado foi de 5%. Resultados: ao comparar as avaliações iniciais e finais no grupo PS, foi observado aumento estatisticamente significativo nos domínios capacidade funcional (p=0,015, dor (p=0,025 e saúde mental (p=0,012 do questionário de qualidade de vida. Já, ao comparar as avaliações iniciais e finais no grupo WP, ficou evidenciado aumento estatisticamente significativo nos domínios capacidade funcional (p=0,012, aspectos físicos (p=0,023, dor (p=0,012, vitalidade (p=0,008 e aspectos sociais (p=0,033. Em relação à variável dor pela EVA, também foi observada diminuição significativa em ambos os grupos (p=0,005. Na comparação dos resultados finais obtidos nos dois grupos não foi observada diferença estatisticamente significante em nenhuma das variáveis (p>0,05. Considerações finais: ambos os métodos Pilates solo e Water Pilates são eficazes para melhora da qualidade de vida e redução da dor de pacientes com lombalgia.

  20. Estudo prospectivo comparativo entre pseudoartrose e fusão óssea na estenose de canal lombar Prospective-comparative study between pseudarthrosis and bone fusion in lumbar stenosis

    Directory of Open Access Journals (Sweden)

    Luciano Miller Reis Rodrigues

    2011-01-01

    Full Text Available OBJETIVO: Estudo prospectivo comparativo entre pseudoartrose e fusão óssea na estenose de canal lombar MÉTODO: 38 pacientes operados de estenose de canal lombar e submetidos à artrodese avaliados por meio de questionários (escala visual analógica - VAS e questionário de incapacidade Rolland Morris. Foram solicitadas radiografias para avaliação da fusão lombar. RESULTADOS: Foi observada uma efetiva melhora entre o momento pré-operatório e após um ano em relação ao VAS, tanto no grupo que obteve fusão óssea como no grupo com pseudartrose. Em relação ao questionário Rolland Morris houve uma tendência de melhora no grupo com fusão óssea e uma significante melhora no grupo com pseudoartrose. CONCLUSÃO: Não houve diferença entre os grupos (fusão óssea e pseudoartrose em relação à dor e incapacidade. Nível de Evidência: Nível II, estudo prospectivo longitudinal.OBJECTIVE: Prospective-comparative study between pseudarthrosis and bone fusion in lumbar stenosis METHODS: 38 patients operated on for lumbar spinal stenosis and submitted to arthrodesis were evaluated by the Visual Analogue Scale (VAS and Roland Morris Disability Questionnaire. Radiographs were requested to evaluate spinal fusion. RESULTS: An effective improvement was observed between the preoperative period and one year after the operation, in relation to VAS, both in the group that received a bone fusion and in the group with pseudarthrosis. With regard to the Roland Morris questionnaire, there was a tendency towards an improvement in the bone fusion group and a significant improvement in the pseudarthrosis group. CONCLUSION: There was no difference between the groups (bone fusion and pseudarthrosis in relation to pain and disability. . Level of Evidence: Level II, longitudinal prospective study.

  1. Plastia valvar mitral na doença cardíaca reumática e degeneração mixomatosa: estudo comparativo

    Directory of Open Access Journals (Sweden)

    PROVENZANO JUNIOR Sylvio Carvalho

    2002-01-01

    Full Text Available INTRODUÇÃO: No Brasil, a maioria das intervenções na valva mitral são devidas à doença cardíaca reumática (DR. Algumas vantagens da plastia mitral em relação à troca valvar são menor mortalidade operatória e tardia, manutenção da geometria e função ventricular esquerda e menor número de eventos relacionados à valva. A evolução da DR, porém, interfere negativamente nos resultados de reconstrução. OBJETIVO: Este trabalho tem como objetivo analisar os resultados da plastia mitral na correção da insuficiência mitral pura em pacientes com DR, tendo como referência pacientes com degeneração mixomatosa (DM. CASUÍSTICA E MÉTODO: O estudo foi retrospectivo, baseado em revisão de prontuários de 9 pacientes com DM e 11 com DR submetidos a plastia ou reconstrução valvar mitral entre julho de 1992 e agosto de 1999. Foram realizados 26 procedimentos na valva mitral dos pacientes com DM e 31 naqueles com DR. Anuloplastia com anel maleável de pericárdio bovino foi realizada em 18 (90% pacientes, e apenas duas com anel rígido (uma em cada grupo. Em relação ao reparo de defeitos nas cúspides, foi realizado um total de 24 procedimentos. As técnicas foram ressecção quadrangular (n = 13, encurtamento por trincheira (n = 5, comissurotomia (n = 4, extensão de folheto posterior (n = 3, transposição de corda (n = 3, reposição de corda (n = 2, papilotomia (n = 2, plicatura de corda (n = 1 e dobramento de folheto (n = 1. RESULTADO: O seguimento médio foi de 3,4 anos, e apenas um paciente com DR não compareceu às consultas. Não houve mortalidade hospitalar ou tardia. Um paciente com DR foi reoperado e nenhum no grupo de DM. A taxa de risco linear para reoperação foi de 2,59% por paciente/ano no grupo com DR. Um paciente com DR apresentou endocardite três meses após a operação. Os diâmetros sistólico e diastólico finais de ventrículo esquerdo de ambos os grupos não apresentaram diferença estat

  2. Efeitos do tratamento prévio com lidocaína, paracetamol e lidocaína-fentanil por via venosa na dor causada pela injeção de propofol: estudo comparativo Efectos del tratamiento previo con lidocaína, paracetamol y lidocaína-fentanil intravenosos en el dolor causado por la inyección de propofol: estudio comparativo Effect of pretreatment with lidocaine, intravenous paracetamol and lidocaine-fentanyl on propofol injection pain: comparative study

    Directory of Open Access Journals (Sweden)

    Khaled M. El-Radaideh

    2007-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Foi realizado estudo duplamente encoberto, aleatório, para avaliar a eficácia do tratamento prévio, por via venosa, com lidocaína, paracetamol (Perfalgan® ou lidocaína associada ao fentanil na redução da dor causada pela injeção de propofol. MÉTODOS: Imediatamente após a oclusão venosa com torniquete de borracha foi feita a administração venosa de 4 mL de lidocaína a 1% (Grupo L, n = 50, 4 mL de paracetamol (Perfalgan® (40 mg (Grupo R, n = 50, lidocaína a 2% associada a 100 µg de fentanil (Grupo LF, n = 50 ou 4 mL de solução fisiológica a 0,9% (Grupo P, n = 50; grupo-controle com placebo a 200 adultos. A liberação da obstrução venosa foi feita após 60 segundos, sendo seguida da administração venosa de propofol, 2,5 mg.kg-1 a uma velocidade de 0,5 mg.s-1 através de cateter 20G inserido na veia do dorso da mão. A avaliação da dor foi feita durante a injeção de propofol. Ela incluiu movimentos da mão, expressão verbal espontânea de dor, caretas e gemidos durante a injeção de propofol. RESULTADOS: Lidocaína-fentanil (70% sem dor e lidocaína (68% sem dor foram mais eficazes na redução da dor causada pela injeção de propofol do que o paracetamol (54% sem dor e o placebo (36% sem dor (p JUSTIFICATIVA Y OBJETIVOS: Se realizó estudio doblemente encubierto, aleatorio, para evaluar la eficacia del tratamiento previo, intravenoso (IV, con lidocaína, paracetamol (Perfalgan® o lidocaína asociada con fentanil en la reducción del dolor causado por la inyección de propofol. MÉTODOS: Inmediatamente después de la oclusión venosa con un torniquete de goma, se hizo la administración intravenosa de 4 mL de lidocaína a 1% (Grupo L, n = 50, 4 mL de paracetamol (Perfalgan® (40 mg (Grupo R, n = 50, lidocaína a 2% asociada con 100 µg de fentanil (Grupo LF, n = 50 o 4 mL de solución fisiológica (Grupo P, n = 50; grupo control con placebo a 200 adultos. La liberación de la obstrucci

  3. un estudio comparativo

    Directory of Open Access Journals (Sweden)

    Federico Varona

    2007-01-01

    Full Text Available La comunicación efectiva es uno de los mayores retos que tienen hoy las organizaciones y empresas tanto a nivel nacional como internacional (global. Este artículo presenta los resultados de la investigación realizada por un equipo internacional de investigadores interesados en descubrir y comparar las conductas comunicativas o estilos de comunicación de los empleados finlandeses y mexicanos cuando interactúan con sus superiores. Para ello presentamos: primero, un breve marco teórico del estudio; segundo, la metodología; tercero, los resultados del análisis estadístico comparativo entre los empleados de Finlandia y México; cuarto, las conclusiones generales y su explicación cultural; y quinto, las implicaciones teóricas y prácticas de este estudio con respecto a las competencias comunicativas necesarias para la comunicación efectiva entre empleados y superiores tanto en organizaciones nacionales como internacionales (globales.

  4. Prevalência de enteroparisitos na populaçao urbana de São Tomé - RN - estudo comparativo de um decênio

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    Carlos Alberto Moreira Campos

    1982-12-01

    Full Text Available Objetivando a obtenção de variáveis relacionadas aos fatores sócio-econômicos e sanitários no período de dez (10 anos, os autores colheram resultados sobre a prevalência de enteroparasitas na população urbana de São Tomé, Rio Grande do Norte, cujos dados foram coletados entre 09 a 27 de julho de 1979, empregando o método da sedimentação espontânea (Hoffmann, Pons e Janer, através de exames realizados em 826 amostras de fezes, com uma positividade de565 para as diversas parasitoses intestinais e correspondendo a uma prevalência de 68,4% em função das condições ambientais que, embora melhoradas, concorrem no processo de disseminação de helmintoses e protozooses, além de outras patologias.In view of socio-economic and sanitary changes during ten (10 years, the authors gathered data on the prevaíence of enteroparasites in the urban population of São Tomé, Rio Grande do Norte. They collected from July 9 to July 27, 1979, 826 faecal samples which they examined using the spontaneous sedimentation method (Hoffmann, Pons, and Janer. 565 were positive for the various intestinal parasites, corresponding to a prevaíence of 68,4%. Although environmetal conditions have improved, they still contributed to the dissemination intestinal protozoal and helminthic infections.

  5. A divulgação de relatórios de sustentabilidade na América Latina: um estudo comparativo

    Directory of Open Access Journals (Sweden)

    Laura Calixto

    2013-12-01

    Full Text Available Neste trabalho, procurou-se analisar comparativamente as informações socioambientais divulgadas pelas companhias latino-americanas nos seus relatórios. Foi efetuada uma análise de conteúdo das informações socioambientais divulgadas por uma amostra de 226 organizações, no período de 2004 a 2009, segregadas por país, empresa, setor e ano. Foram utilizadas as diretrizes voluntárias da The Global Reporting Initiative (GRI como escopo para analisar o conteúdo dos relatórios anuais, relatórios de sustentabilidade e Formulários 20F, disponibilizados pelas organizações nos seus websites ou nas Bolsas de Valores em que negociam suas ações. Os resultados da pesquisa revelaram que a maioria das companhias de capital aberto na região não disponibiliza informações socioambientais nos seus relatórios anuais ou em relatórios específicos sobre o tema, entretanto, as companhias estabelecidas no Brasil são as que mais destacam o assunto. Quanto à evolução e à forma de divulgação de informações socioambientais, verificou-se que o relatório anual é o principal canal utilizado pelas companhias para destacar tais informações, seguido do relatório de sustentabilidade, divulgado como parte do relatório anual ou como uma publicação específica.

  6. Aplicação de índice comparativo na avaliação do risco de degradação das terras

    Directory of Open Access Journals (Sweden)

    S. B. L. Ranieri

    1998-12-01

    Full Text Available A determinação do risco de degradação das terras em uma microbacia hidrográfica constitui importante subsídio para o planejamento agrícola e ambiental. A tendência atual é que as informações necessárias para a avaliação das terras sejam compatíveis com técnicas de geoprocessamento e tratadas de forma menos subjetiva. Todavia, critérios ou parâmetros que avaliem quantitativamente o risco de degradação das terras e que sejam compatíveis com a escala de microbacia hidrográfica e aplicáveis por meio de Sistemas de Informação Geográfica (SIGs ainda precisam ser mais bem definidos. O objetivo deste trabalho, realizado no segundo semestre de 1996, foi elaborar um método de avaliação comparativa do risco de degradação das terras na bacia hidrográfica dos Marins (Piracicaba, SP, sob diferentes cenários de uso, utilizando SIG. Os mapas de risco de degradação foram gerados com base em matrizes de decisão para os seguintes cenários de uso: (a sem cobertura vegetal; (b uso atual da terra; (c uso único; (d uso redistribuído; (e uso planejado. Os resultados foram comparados por um índice denominado "Índice Ponderado de Risco de Degradação (IP D". Por meio desse índice foi possível comparar quantitativamente o risco de degradação para os cenários de uso propostos. Os resultados mostraram que a tentativa de alterar apenas a distribuição espacial dos usos da terra não foi suficiente para diminuir o risco de degradação final da área, caracterizando, assim, a superutilização das terras da microbacia. Para diminuir os impactos causados por essa superutilização, faz-se necessária a definição de critérios de restrição de ocupação que conciliem áreas de maior suscetibilidade à erosão com usos que ofereçam maior proteção ao solo, levando à diminuição da área ocupada com culturas anuais e semiperenes.

  7. New school radon abatement systems

    International Nuclear Information System (INIS)

    Simon, R.F.; Maniscalco, P.J.

    1990-01-01

    This paper describes the methods used to develop a state-of-the-art Radon Abatement system: all aspects of design and implementation from proper sizing radon ventilation ductwork (RVD) in relationship to the amount of free air available in sub-slab aggregate, review of electrical systems with their monitoring devices from the very basic to the more sophisticated type of installation, review abatement designs for their durability and application as well as methods and techniques. Building codes will also be reviewed for commercial construction applications, spot-lighting the usage of specific materials and techniques and their impact on the industry

  8. The nitrogen abatement cost in wetlands

    International Nuclear Information System (INIS)

    Bystroem, Olof

    1998-01-01

    The costs of abating agricultural nitrogen pollution in wetlands are estimated. By linking costs for construction of wetlands to the denitrification capacity of wetlands, an abatement cost function can be formed. A construction-cost function and a denitrification function for wetlands is estimated empirically. This paper establishes a link between abatement costs and the nitrogen load on wetlands. Since abatement costs fluctuate with nitrogen load, ignoring this link results in incorrect estimates of abatement costs. The results demonstrate that wetlands have the capacity to provide low cost abatement of nitrogen compounds in runoff. For the Kattegatt region in Sweden, marginal abatement costs for wetlands are shown to be lower than costs of land use changing measures, such as extended land under fallow or cultivation of fuel woods, but higher than the marginal costs of reducing nitrogen fertilizer

  9. Thoughts on abatement and adaptation

    International Nuclear Information System (INIS)

    Revelle, R.R.

    1991-01-01

    A number of questions having to do with the themes of abatement and adaptation are discussed. Under the first rubric are questions of future concentrations of radiatively active trace gases, the linkage of these gases with greenhouse warming, and other environmental problems. Also examined in the abatement context are opportunities to reduce fossil fuel use and therefore the emission of greenhouse gases, and the likelihood that natural forest expansion may provide an opportunity to control the rate of carbon dioxide (CO2) accumulation in the atmosphere. Also discussed are the possible effects of greenhouse warming on agriculture in the United States and in the developing world. Finally, some suggestions are given on capturing and retaining interest in greenhouse warming on the part of the decision making public

  10. Estudo comparativo do tono muscular na paralisia cerebral tetraparética em crianças com lesões predominantemente corticais ou subcorticais na tomografia computadorizada de crânio

    OpenAIRE

    Iwabe,Cristina; Piovesana,Ana Maria Sedrez Gonzaga

    2003-01-01

    OBJETIVO: Comparar a distribuição e intensidade do tono muscular na paralisia cerebral tetraparética espástica (PC-T), correlacionando os dados clínicos com a localização da lesão no sistema nervoso central. MÉTODO: Foram incluídas 12 crianças de dois a quatro anos de idade com lesões predominantemente corticais (seis crianças) e subcorticais (seis crianças). O tono foi analisado nos membros superiores (MMSS) e inferiores (MMII) baseado no protocolo de Durigon e Piemonte. RESULTADOS: Não houv...

  11. Estudo comparativo da analgesia entre bupivacaína e morfina intra-articular em osteoartrite de joelho Estudio comparativo de la analgesia entre bupivacaína y morfina intra-articular en osteoartritis de la rodilla Intra-articular bupivacaine and morphine for knee osteoarthritis analgesia. Comparative study

    Directory of Open Access Journals (Sweden)

    Miriam C B Gazi

    2005-10-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A osteoartrite é a mais freqüente entre as doenças articulares em pessoas idosas. O objetivo do estudo foi comparar o efeito analgésico da bupivacaína e da morfina por via intra-articular em pacientes portadores de osteoartrite de joelho. MÉTODO: Foram avaliados 39 pacientes em estudo duplamente encoberto, divididos de forma aleatória, em dois grupos: os do G1 (n = 18 receberam 1 mg (1 mL de morfina diluída em 9 mL de solução fisiológica a 0,9% e os do G2 (n = 21, 25 mg (10 mL de bupivacaína a 0,25% sem vasoconstritor, por via intra-articular. A intensidade da dor foi avaliada pela escala numérica e verbal nos momentos 0, 30, 60 minutos e 7 dias, em repouso e em movimento. Foram avaliados a necessidade de complementação analgésica com paracetamol (500 mg, a dose total de analgésico utilizado, a duração da analgesia e a qualidade da analgesia (pelo paciente. RESULTADOS: Dos 39 pacientes, 31 completaram o estudo. Não houve diferença significativa da intensidade da dor em repouso e em movimento entre os dois grupos nos momentos estudados. Não houve diferença entre os dois grupos no tempo entre a administração da solução e a necessidade de complementação analgésica. A dose média do paracetamol utilizada no primeiro dia da semana foi de 796 mg do G1 e de 950 mg no G2; a complementação na semana foi de 3578 mg no G1 e 5333 mg no G2. CONCLUSÕES: O efeito analgésico de 1 mg de morfina e de 25 mg de bupivacaína a 0,25% sem vasoconstritor intra-articular foram semelhantes.JUSTIFICATIVA Y OBJETIVOS: La osteoartritis es la más frecuente entre las enfermedades articulares en personas de edad. El objetivo del estudio fue comparar el efecto analgésico de la bupivacaína y de la morfina por vía intra-articular en pacientes portadores de osteoartritis de rodilla. MÉTODO: Fueron evaluados 39 pacientes en estudio doblemente encubierto, divididos de forma aleatoria, en dos grupos: los del G1 (n = 18

  12. Estudo comparativo entre clonidina associada à bupivacaína e bupivacaína isolada em bloqueio de plexo cervical para endarterectomia de carótida Estudio comparativo entre la clonidina asociada a la bupivacaína y la bupivacaína aislada en bloqueo de plexo cervical para endarterectomía de carótida A comparative study between bupivacaine and clonidine associated with bupivacaine in cervical plexus block for carotid endarterectomy

    Directory of Open Access Journals (Sweden)

    Walter Pinto Neto

    2009-08-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: O bloqueio de plexo cervical permite avaliação neurológica durante a endarterctomia, além de manter analgesia pós-operatória. A clonidina é agonista alfa2 com efeito analgésico em diferentes bloqueios. O objetivo deste estudo foi comparar o efeito analgésico da clonidina com bupivacaína em relação à bupivacaína isolada em bloqueio de plexo cervical. MÉTODO: Foram avaliados 30 pacientes de forma aleatória e duplamente-encoberta divididos em dois grupos: G1 recebeu 1,5 mg.kg-1 de bupivacaína a 0,375% associados a 150 ¼g de clonidina (2 mL e G2, 1,5 mg.kg-1 de bupivacaína a 0,375% associados à solução fisiológica (2 mL. Foram avaliados: frequência cardíaca e pressão arterial nos momentos 0 (bloqueio, 30, 60, 90 e 120 minutos; necessidade de complementação anestésica; momento para primeira complementação analgésica; quantidade de analgésico usada e intensidade da dor nos momentos 0 (término da operação, 30, 60, 120, 240 e 360 minutos. RESULTADOS: A complementação anestésica com lidocaína foi de 3,8 mL no G1 e 3,6 mL no G2 sem diferença estatística significativa. O momento para a primeira complementação foi de 302,6 ± 152,6 minutos no G1, e de 236,6 ± 132,9 minutos no G2, sem diferença significativa. Não houve diferença na dose de dipirona e tramadol usada. Não houve diferença na intensidade da dor entre os grupos. CONCLUSÃO: A associação de 150 ¼g de clonidina à bupivacaína em bloqueio de plexo cervical para endarterectomia de carótida não promoveu melhora significativa do efeito analgésico avaliado por intensidade da dor, primeira complementação analgésica e quantidade de analgésico complementar.JUSTIFICATIVA Y OBJETIVOS: El bloqueo de plexo cervical permite la evaluación neurológica durante la endarterectomía, además de mantener la analgesia postoperatoria. La clonidina es agonista alfa-2 con un efecto analgésico en diferentes bloqueos. El objetivo de

  13. Environmental Pollution Prevention, Control and Abatement

    Science.gov (United States)

    1977-08-30

    AD-A271 117 fDATE August 30. 1977 ASD (ORA&L) Department of Defense Instruction SUBJECT: Environmental Pollution Prevention, Control and Abatement...Ensure that any funds appropriated and apportioned for the prevention, control, and abatement of environmental pollution are not used for any other...77 References (a) Executive Order 11752, "Prevention, Control, and Abatement of Environmental Pollution at Federal Facilities," December 19, 1973 (b

  14. Regional Marginal Abatement Cost Curves for NOx

    Data.gov (United States)

    U.S. Environmental Protection Agency — Data underlying the figures included in the manuscript "Marginal abatement cost curve for NOx incorporating controls, renewable electricity, energy efficiency and...

  15. Maryland Cleaning & Abatement Services Corp. Information Sheet

    Science.gov (United States)

    Maryland Cleaning & Abatement Services Corp. (the Company) is located in Baltimore, Maryland. The settlement involves renovation activities conducted at property constructed prior to 1978, located in Baltimore, Maryland.

  16. Um Estudo Comparativo Entre Coeficientes de Difusão Verticais na Simulação da Dispersão de Poluentes em uma Camada Limite Convectiva

    Directory of Open Access Journals (Sweden)

    Maria de Fatima Silva Leite

    Full Text Available Resumo Este trabalho apresenta um estudo comparativo entre diferentes coeficientes de difusão verticais aplicados em um modelo de dispersão para determinação da concentração de poluentes atmosféricos em uma camada limite convectiva. O modelo de dispersão é uma solução semi-analítica da equação de difusão-advecção tridimensional e estacionária, sendo que os resultados das simulações foram confrontados com dados experimentais da literatura. As melhores performances foram obtidas com o coeficiente de difusão proveniente da teoria estatística de Taylor e propriedades espectrais. Entretanto, resultados menos satisfatórios foram obtidos com a parametrização Asymmetric Convective Model version 2 (ACM2, muito usada como uma das opções para camada limite atmosférica no modelo de mesoescala Weather Research and Forecasting (WRF.

  17. Estudo comparativo entre elementos meteorológicos monitorados por estações convencional e automática na região de Maringá, Estado do Paraná - DOI: 10.4025/actascitechnol.v25i2.2220

    Directory of Open Access Journals (Sweden)

    Ivonete de Almeida Souza

    2003-04-01

    Full Text Available Efetuou-se, neste trabalho, um estudo comparativo entre os seguintes elementos meteorológicos: temperatura do ar máxima (Tmax, mínima (Tmin e média (Tmed, umidade relativa do ar média (URmed e pressão atmosférica média (Patm, obtidos em uma Estação Meteorológica Convencional (EMC e em uma Estação Meteorológica Automática (EMA, em Maringá, Estado do Paraná, no período de 01/03/99 a 31/12/2001. Os dados entre as respectivas estações foram comparados através do coeficiente de determinação (R2, do índice de concordância de Willmott (d e por meio do erro ( associado ao coeficiente angular da reta de regressão. Após a análise dos dados, concluiu-se que os elementos meteorológicos Tmax, Tmed, Tmin e URmed apresentaram significativa concordância entre os dados observados na EMC e na EMA. Os valores da URmed obtidos pelo sensor eletrônico da EMA foram 2% maiores que os mesmos obtidos pelo sensor da EMC, estando esse erro dentro da faixa de precisão dos sensores. Apesar dos baixos erros, os dados de Patm apresentaram diferenças significativas, contudo essa defasagem numérica deve-se à diferença de altitude (28m das localidades onde se situam a EMC e a EMA.

  18. Freqüência de lesões gástricas em suínos destinados ao abate na região de Ribeirão Preto, SP

    Directory of Open Access Journals (Sweden)

    Carvalho L.F.O.S.

    1999-01-01

    Full Text Available Foram colhidos e examinados 1085 estômagos de suínos, machos castrados ou fêmeas, todos com idade entre 140 e 150 dias. As lesões encontradas foram classificadas de acordo com a localização, tipo e severidade. A análise macroscópica revelou que 694 (64% estômagos apresentavam algum tipo de lesão. A paraqueratose foi identificada como alteração patológica única em 213 (19,6% estômagos. Em outros 319 (29,4% estômagos, ela estava associada apenas a processos erosivos ou associada a erosões e úlceras. Erosões isoladas ou associadas a ulcerações foram identificadas em 121 (11,2% animais, enquanto que úlceras, foram verificadas em 41 (3,8% animais. A avaliação por regiões, revelou que 62,8% apresentaram lesões na região gastresofágica e apenas 6,6% na região fúndica do órgão. Tais achados sugerem a existência de diferentes causas na etiopatogenia desses dois processos gástricos. A ulceração gastresofágica estava presente em 213 (19,6% animais, dos quais 22,7% eram machos castrados e 16,5% eram fêmeas, fato que evidencia possível influência do sexo na freqüência dessa patologia em suínos. Os exames microscópicos, realizados em parte das amostras, apenas confirmaram as alterações, já identificadas pelo exame macroscópico. Apenas o exame macroscópico conduz a resultados confiáveis na avaliação de lesões gástricas em suínos.

  19. Carbon dioxide abatement as a differential game

    International Nuclear Information System (INIS)

    Tahvonen, O.

    1993-01-01

    The report combines predictions on greenhouse warming, CO 2 abatement costs and adaptation costs in a differential game framework. The specified model makes it possible to solve the payoffs of the subgame perfect solution of a two state variable nonautonomous problem with N unequal countries. Abatement cost parameters are calibrated with a global energy sector model and climate parameters are based on empirical time series. Simulation suggests that the backstop technology assumption in the abatement cost model may imply drastic cuts in optimal emission levels. Compared to the Nash noncooperative equilibrium a pareto optimal agreement is found to be beneficial for developing countries but more costly for the industrial world. Given the present damage estimates, the losses due to an emission stabilizing agreement may be 400 times higher than maximum potential gains from cooperation

  20. Qualificação formal do trabalhador e automação na Fiat automóveis: um estudo comparativo nas plantas industriais de Cassino (Ita) e Betim (Br)

    OpenAIRE

    Vieira, Adriane; Garcia, Fernando Coutinho

    2008-01-01

    A proposta deste trabalho é analisar a mudança na qualificação formal dos trabalhadores no contexto das inovações tecnológicas. Tomou-se como referência o estudo de duas fábricas da Fiat Automóveis, uma localizada na cidade de Cassino/Itália, a mais automatizada do Grupo Fiat, e outra localizada na cidade de Betim/Brasil, que combina baixa automação com alta flexibilização do trabalho. Trata-se de uma pesquisa de campo, do tipo exploratória. Os dados foram coletados por meio de fontes secu...

  1. GAC as a method for radon abatement

    International Nuclear Information System (INIS)

    Martin, R.D.; Smith, K.A.

    1990-01-01

    Perhaps one of the most mysterious abatement procedures is that of the remediation of waterborne radon contamination in residential structures. Many mitigators have been led to believe that the use of GAC as an abatement technique is in appropriate due to the potential creation of a hazardous waste disposal problem. This paper sheds light on the use of GAC as a true alternative to costly aeration mitigation techniques, and can be used as a resource tool for mitigators who need to understand the limits of activity surrounding GAC, and what, if any, shielding may be needed for the protection of residential occupants

  2. Comparative study of sulfated polysaccharides from Caulerpa spp. (Chlorophyceae. Biotechnological tool for species identification?=Estudo comparativo dos polissacarídeos sulfatados de clorofíceas Caulerpa spp. (Chlorophyceae. Ferramenta biotecnológica na identificação de espécies?

    Directory of Open Access Journals (Sweden)

    Chistiane Oliveira Coura

    2012-10-01

    cromatografia de troca iônica em coluna de DEAE-celulose utilizando um gradiente de NaCl. As frações obtidas foram analisadas por eletroforese em gel de agarose a 0,5%. Ensaios anticoagulantes, utilizando o teste do tempo de tromboplastina parcial ativada (TTPA com plasma humano normal e heparina padrão (193 UI mg-1, também foram realizados como parâmetros de comparação. Verificaram-se baixos rendimentos e semelhantes perfis cromatográficos entre os PSs das espécies, porém revelando, por eletroforese, diferenças moleculares marcantes. As alterações no TTPA das frações de PS foram dependentes da densidade de cargas negativas mostradas nos perfis eletroforéticos, cujas atividades foram 17,37 (C. cupressoides, 22,17 (C. racemosa e 25,64 (C. prolifera UI mg-1, respectivamente, e tal propriedade justificou um estudo já realizado utilizando a primeira e segunda espécies. Os resultados sugerem que estudos comparativos de PSs isolados de algas marinhas possam vir a ser uma ferramenta importante na identificação de Caulerpaceae.

  3. Infectious disease risk in asbestos abatement workers.

    Science.gov (United States)

    Lange, John H; Mastrangelo, Giuseppe; Cegolon, Luca

    2012-08-16

    The current literature reports increased infectious disease occurrence in various construction occupations, as an important contributor to morbidity and mortality arising from employment.These observations should be expanded to asbestos abatement workers, as the abatement can create an environment favorable for bacterial, viral and fungal infections. Asbestos abatement work employs activities resulting in cuts, blisters and abrasions to the skin, work in a dirty environment and exposure to dust, mists and fumes.Furthermore, this population exhibits a high smoking rate which increases the risk of chronic obstructive pulmonary disease and respiratory infections.In addition, these workers also commonly employ respirators, which can accumulate dirt and debris magnifying exposure to microbes. Use of respirators and related types of personal protective equipment, especially if shared and in the close environment experienced by workers, may enhance communicability of these agents, including viruses. Abatement workers need to be provided with information on hazards and targeted by appropriate health education to reduce the infection risk. Epidemiological studies to investigate this risk in asbestos removers are recommended.

  4. 76 FR 67650 - Migratory Bird Permits; Abatement Regulations

    Science.gov (United States)

    2011-11-02

    ... and suggestions on migratory bird permit regulations for a permit to use raptors (birds of prey) in abatement activities. Abatement means the use of trained raptors to flush, scare (haze), or take birds or... for a specific permit authorizing the use of raptors in abatement activities (76 FR 39368). The...

  5. Tratamento da Eclâmpsia: Estudo Comparativo entre o Sulfato de Magnésio e a Fenitoína Treatment of Eclampsia: Comparative Study on the Use of Magnesium Sulfate and Phenytoin

    Directory of Open Access Journals (Sweden)

    João de Deus Valadares Neto

    2000-10-01

    Full Text Available Objetivos: comparar a eficácia do sulfato de magnésio e da fenitoína no controle das convulsões em pacientes com eclâmpsia e avaliar os efeitos de sulfato de magnésio e da fenitoína sobre o prognóstico materno e perinatal em pacientes com eclâmpsia. Métodos: estudo prospectivo, randômico e controlado no qual foram analisados, de forma comparativa, os resultados obtidos no tratamento anticonvulsivante da eclâmpsia em 77 mulheres tratadas com sulfato de magnésio ou fenitoína. As drogas que constituíram os dois esquemas terapêuticos foram distribuídas, na proporção de um para um, em caixas numeradas aleatoriamente que apresentavam características semelhantes. À medida que cada paciente era admitida, uma caixa era aberta e o esquema nela contido administrado à paciente. Resultados: observou-se que, no grupo tratado com sulfato de magnésio, 19,5% das pacientes apresentaram recidiva de convulsões, ao passo que no grupo que usou fenitoína, 36,1% manifestaram novas crises (p0,05. Conclusões: o sulfato de magnésio mostrou-se mais eficaz que a fenitoína no controle e prevenção da recidiva de convulsões em pacientes com eclâmpsia, embora sua utilização esteja associada a maior prevalência materna de hemorragia pós-parto e desconforto respiratório neonatal. A fenitoína apresenta-se como droga alternativa para o tratamento de eclâmpsia nos casos em que houver contra-indicação ao uso do sulfato de magnésio.Purpose: to compare the efficiency between magnesium sulfate and phenytoin in the control of convulsions in patients with eclampsia and to evaluate the effects of magnesium sulfate and phenytoin on the maternal and perinatal prognosis in patients with eclampsia. Methods: this is a prospective, randomized and controlled study in which the results obtained with the use of anticonvulsive treatment in 77 women with eclampsia, treated with either magnesium sulfate or phenytoin, were analyzed comparatively. The drugs

  6. Estudo da Técnica Tig Keyhole por Meio do Análise Comparativo entre Duas Tochas de Alta Produtividade na União de Chapas de Aço Carbono de Meia Espessura

    Directory of Open Access Journals (Sweden)

    Erick Alejandro González Olivares

    2015-09-01

    Full Text Available Resumo Na bibliografia de referência comum, a soldagem por meio da técnica Keyhole sempre foi associada a processos de soldagem com uma alta concentração de energia, como o processo Laser ou o processo Plasma. Novos avanços em tochas TIG estão mudando a forma em como o processo de soldagem TIG deveria ser considerado. Um exemplo desses novos avanços é a tocha comercialmente conhecida como Infocus, que segundo seus fabricantes a principal característica da tocha é a capacidade de concentração de energia na ponta do eletrodo, por médio de um aumento na potência de refrigeração do eletrodo, diferenciando à Infocus de uma tocha convencional TIG. Tal concentração de energia permite à tocha Infocus trabalhar com a técnica Keyhole. Portanto, é objetivo do presente trabalho estudar a factibilidade de uma tocha convencional TIG de usar a técnica Keyhole, com as mesmas condições de trabalho que a tocha comercialmente conhecida como Infocus. Através dos ensaios realizados foi possível confirmar que o processo TIG consegue trabalhar com a técnica Keyhole, sem necessidade de uma tocha com características especiais. Porém, o eletrodo da tocha Infocus possui uma vida maior, em comparação a um eletrodo convencional da mesma composição, aumentando a produtividade do processo.

  7. Neuromodulatory effects of caffeine and bromazepam on visual event-related potential (P300: a comparative study Efeitos neuromoduladores da cafeína e do bromazepam no potencial evocado visual relacionado a evento (P300: estudo comparativo

    Directory of Open Access Journals (Sweden)

    Mariana Montenegro

    2005-06-01

    Full Text Available The P300 component of the event-related potential (ERP is a general measurement of "cognitive efficiency". It is an index of the ability of an individual's central nervous system (CNS to process incoming information. OBJECTIVE: To compare the neuromodulatory effects of caffeine and bromazepam on the visual ERP (P300, in relation to a P300 normative database. METHOD: 15 right-handed individuals (7 male and 8 female, between 20 and 30 years of age, healthy, free of any cognitive impairment and not making use of psychoactive substances were studied. Participants were submitted to a visual discrimination task, which employed the "oddball" paradigm, after the administration of caffeine and bromazepam, in a randomized, double-blind design. RESULTS: Statistically significant differences were observed when the caffeine and bromazepam conditions were compared to the normative database. CONCLUSION: The present results suggest that caffeine and bromazepam have distinct modulatory effects on CNS functioning.O componente P300 do potencial evocado relacionado a evento é uma medida geral de "eficiência cognitiva" e um índice da qualidade do processamento e armazenamento de informações pelo sistema nervoso central (SNC. OBJETIVO: Comparar os efeitos neuromoduladores da cafeína e do bromazepam a partir do banco normativo do potencial evocado visual (P300. MÉTODO: 15 sujeitos destros (7 homens e 8 mulheres, entre 20 e 30 anos de idade, sadios, livres de qualquer déficit cognitivo e sem uso de substâncias psicotrópicas ou psicoativas foram estudados. Os sujeitos foram submetidos a uma tarefa de discriminação visual utilizando o paradigma "oddball", após a administração de uma cápsula de cafeína ou de bromazepam, em um desenho duplo-cego randomizado. RESULTADOS: Foram observadas diferenças estatisticamente significativas quando as condições cafeína e bromazepam foram comparadas com o banco normativo. CONCLUSÃO: Os resultados sugerem que a cafeína

  8. Estudo da Técnica Tig Keyhole por Meio do Análise Comparativo entre Duas Tochas de Alta Produtividade na União de Chapas de Aço Carbono de Meia Espessura

    OpenAIRE

    Olivares, Erick Alejandro González; Silva, Régis Henrique Gonçalves e; Dutra, Jair Carlos

    2015-01-01

    Resumo Na bibliografia de referência comum, a soldagem por meio da técnica Keyhole sempre foi associada a processos de soldagem com uma alta concentração de energia, como o processo Laser ou o processo Plasma. Novos avanços em tochas TIG estão mudando a forma em como o processo de soldagem TIG deveria ser considerado. Um exemplo desses novos avanços é a tocha comercialmente conhecida como Infocus, que segundo seus fabricantes a principal característica da tocha é a capacidade de concentração ...

  9. Brasil alfabetizado e misión robinson : um estudo comparativo acerca das políticas de alfabetização no Brasil e na Venezuela – 2003-2013

    OpenAIRE

    Jaira Coelho Moraes

    2015-01-01

    Esta pesquisa é um estudo comparado entre dois programas de alfabetização de jovens e adultos que tiveram início no ano de 2003: o PBA – Programa Brasil Alfabetizado, desenvolvido no Brasil, e a Misión Robinson, na Venezuela. A análise destas políticas nos dois países em relação ao momento particular do capitalismo é objetivo principal, e em específico, buscou-se conhecer como se formam os alfabetizadores. O tema aborda a questão do alfabetismo/analfabetismo como um dos problemas sociais que ...

  10. "Estudo comparativo da resistência à infiltração que diferentes materiais resinosos utilizados na cimentação de retentores intra-radiculares oferecem à passagem de fluidos que atravessam a dentina"

    OpenAIRE

    Marcio Katsuyoshi Mukai

    2005-01-01

    O Objetivo deste estudo é avaliar in vitro, a resistência que diferentes materiais resinosos têm a passagem de fluidos que atravessam a dentina na ausência de cemento radicular. Foram utilizados 60 dentes humanos cedidos pelo banco de dentes da FOUSP. Os dentes foram submetidos a tratamento endodôntico segundo a técnica de Paiva e Antoniazzi e armazenados a uma temperatura de 37°C em umidade 100% por 24 horas para o preparo do retentor intra -radicular respeitando o limite apical de 4 mm. Os ...

  11. Comparative study for essential elements determination in milk products samples by INAA and ICP-AES; Estudo comparativo na determinacao de elementos essenciais em amostras de produtos lacteos por AANI e ICP-AES

    Energy Technology Data Exchange (ETDEWEB)

    Kira, Carmen S. [Instituto Adolfo Lutz, Sao Paulo, SP (Brazil). Secao de Equipamentos Especializados; Maihara, Vera A. [Instituto de Pesquisas Energeticas e Nucleares (IPEN), Sao Paulo, SP (Brazil). Lab. de Analise por Ativacao Neutronica

    2002-07-01

    The mineral elements Ca, Fe, K, Mg, Na and Zn were analyzed in milk products by using instrumental neutron activation analysis (INAA) and inductively coupled plasma atomic emission spectrometry (ICP-AES). The study included four types of cheese (mozzarella, minas, prato, parmesan), chocolate milk and yogurt. The samples were purchased from the local markets. Average concentrations ranged from 3668 (chocolate milk) to 16558 (parmesan cheese) mg/kg for Ca; from 2.61 (parmesan cheese) to 28.9 (chocolate milk) mg/kg for Fe; from 673 (mozzarella cheese) to 10492 (chocolate milk) mg/kg for K; from 398 (yogurt) to 2280 (minas cheese) mg/kg for Mg; from 1681 (yogurt) to 15248 (parmesan cheese) mg/kg for Na; from 12.1 (chocolate milk) to 71.8 (parmesan cheese) mg/kg for Zn. Two National Institute of Standards and Technology (NIST) standard reference materials (SRM 8435 Whole Milk Powder and SRM 1549 Non Fat Milk Powder) were analyzed to verify method accuracy. The statistic test used to determine the significance of the difference between the techniques was based on Unpaired t-Student test. Statistical test revealed no significance differences (P< 0,05) between the average values provided by the two methods for the most of determined elements. (author)

  12. Efeitos dos métodos de abate e sexo na composição centesimal, perfil de ácidos graxos e colesterol da carne de capivaras Effect of two slaughter methods and sex on proximate composition, cholesterol content and fatty acids profile of capybara meat (Hydrochaeris Hydrochaeris L. 1766

    Directory of Open Access Journals (Sweden)

    Sandra H. I. Oda

    2004-06-01

    Full Text Available O objetivo desse trabalho foi avaliar os efeitos de métodos de abate (MA (humanitário (MH e por tiro (MT e sexo na composição centesimal, perfil de ácidos graxos (AG e colesterol da carne de capivara (Hydrochaeris hydrochaeris L. 1766. Foram abatidos 20 animais (13 machos (M e 7 fêmeas (F com peso médio de 45,71kg. No músculo longissimus dorsi (LD foram determinados: umidade, lipídios totais (LT, proteína e cinzas e no semimembranosus (SM, o colesterol por colorimetria e o perfil de AG por cromatografia gasosa. O LD apresentou: 75,87% de umidade, 1,37% de LT, 22,11% de proteínas e 1,09% de cinzas. Houve diferença (pThe objective of this work was to evaluate the effects of two slaughter methods: traditional (TS and head-shot (HS and sex on the proximate composition, fatty acids (FA profile and cholesterol content of capybara meat. Twenty animals (13 males (M and 7 females (F, weighting about 45.71kg, were slaughtered. In longissimus dorsi (LD muscle were determined: moisture, crude fat, protein and ash. In semimembranosus (SM muscle, were determined: cholesterol content for colorimetric method and fatty acids (FA profile for gas chromatography. The LD muscle had values of: 75.87% of moisture, 1.37% of crude fat, 22.11% of crude protein, 1.09% of ash. There were significant differences (p<0.01 between lipid contents of M (1.75% and F (0.98%. The FA in major concentration (% were: C16:0 (29.57; C18:1w9 (27.87; C18:2w6 (19.19; C18:0 (6.57; C18:3w3 (4.97; C14:0 (3.64; C20:4w6 (3.45; C18:1w7 (3.31 and C16:1w7 (1.90. Ratio value of poliunsaturated FA to saturated FA was 0.82. The average values of w6 FA and w3 FA were 23.41 and 5.63%, respectively. The factors sex and slaughter method had no effect on poliunsaturated FA percentages and cholesterol content (28.11mg/100g. Capybara meat presented low total lipid content and high crude protein values and FA w6/w3 ratio considered nutritionally adequated.

  13. A comparative study of 19-iodo cholesterol-125I 3-acetate and Na 125I in liquid scintillation measurements; Estudio comparativo del acetato de 19-iodocolesterol- -125I con Nal25I en medidas por centelleo liquido

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez Barquero, L.; Grau Malonda, A.; Los Arcos Merino, J. M.; Grau Carles, A.

    1994-07-01

    A comparative study of performance of 19-iodo cholesterol {sup 1}25I 3-acetate and sodium iodide samples labeled with 125I is presented for liquid scintillation counting measurements. Quench effect, count rate stability and spectral evolution of samples have been followed for several weeks in Toluene, Hisafe II, Instagel, Dioxane-naphthalene and Toluene-alcohol scintillators. Organic samples have negligible quench effect in the interval of I concentration of 0-90 {mu}g and inorganic samples only show a very small variation, lower than 12%, for Dioxane-naphthalene, in the same range of concentration. Satisfactory stability is obtained in general for both, organic and inorganic samples, but small counting losses, 0.03% for 19-iodocholesterol 1 I 3-acetate samples in Tolue ne-alcohol and 0 .04% for Na 125I samples in Dioxane-naphthalene and Toluene-alcohol, have been reported. (Author) 8 refs.

  14. Comparative studies of Yersinia pestis outer membrane isolation techniques and their potential use in plague epidemiology Estudo comparativo de técnicas de isolamento de membrana externa de Yersinia pestis e seu uso na epidemiologia da peste

    Directory of Open Access Journals (Sweden)

    Frederico Guilherme Coutinho Abath

    1990-04-01

    Full Text Available In the present study three techniques for obtaining outer membrane enriched fractions from Yersinia pestis were evaluated. The techniques analysed were: differential solubilization of the cytoplasmic membrane with Sarkosyl or Triton X-100, and centrifugation in sucrose density gradients. The sodium dodecyl-sulfate polyacrylamide gel electrophoresis (SDS-PAGE of outer membrane isolated by the different methods resulted in similar protein patterns. The measurement of NADH-dehydrogenase and succinate dehydrogenase (inner membrane enzymes indicated that the outer membrane preparations obtained by the three methods were pure enough for analytical studies. In addition, preliminary evidences on the potential use of outer membrane proteins for the identification of geographic variants of Y. pestis wild isolates are presented.No presente estudo três técnicas para isolamento de frações enriquecidas em membrana externa de Y. pestis foram avaliadas. As técnicas utilizadas foram: centrifugação em gradiente de densidade em sacarose e solubilização diferencial com Sarkosyl ou Triton X-100. A análise por eletroforese em gel de poliacrilamida na presença de dodecil sulfato de sódio (SDS-PAGE das membranas externas extraídas pelos diferentes métodos evidenciou perfis protéicos semelhantes. A determinação das atividades de NADH-desidrogenase e succinato-desidrogenase (enzimas de membrana interna indicou que todas as preparações estudadas eram adequadas a estudos analíticos. Obteve-se evidências preliminares sobre o possível uso de perfis protéicos de membrana externa na identificação de variantes geográficos entre isolados selvagens de Y. pestis.

  15. Heterogeneous condensation for submicronic particles abatement

    OpenAIRE

    Tammaro, Marco

    2010-01-01

    It is now well established that the emission of sub-micrometric particulate matter entrained in flue gases of industry and vehicles exhausts, is one of the most critical treats for human health because of the toxicological effects of ultrafine particles on the respiratory system and their ability to cross alveoli’s membranes reaching the circulatory system too. Albeit this scenario, the traditional particle abatement devices are mainly designed and optimised to treat particles larger tha...

  16. Bloqueio do plexo lombar pela via posterior para analgesia pós-operatória em artroplastia total do quadril: estudo comparativo entre Bupivacaína a 0,5% com Epinefrina e Ropivacaína a 0,5% Bloqueo del plexo lumbar por la vía posterior para analgesia postoperatoria en artroplastia total de la cadera: estudio comparativo entre Bupivacaína a 0,5% con Epinefrina y Ropivacaína a 0,5% Posterior lumbar plexus block in postoperative analgesia for total hip arthroplasty: a comparative study between 0.5% Bupivacaine with Epinephrine and 0.5% Ropivacaine

    Directory of Open Access Journals (Sweden)

    Leonardo Teixeira Domingues Duarte

    2009-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: O bloqueio do plexo lombar pela via posterior promove analgesia pós-operatória efetiva na artroplastia total do quadril. Ropivacaína e bupivacaína não apresentaram qualquer diferença na eficácia analgésica em diferentes bloqueios de nervos periféricos. O objetivo deste estudo foi comparar a eficácia da analgesia pós-operatória resultante da administração em dose única da bupivacaína a 0,5% ou da ropivacaína a 0,5% no bloqueio do plexo lombar pela via posterior na artroplastia total do quadril. MÉTODO: Trinta e sete pacientes foram alocados aleatoriamente em dois grupos, segundo o anestésico local utilizado no bloqueio: Grupo B - bupivacaína a 0,5% com epinefrina 1:200.000 ou Grupo R - ropivacaína a 0,5%. Durante o período pós-operatório, os escores de dor e o consumo de morfina na analgesia controlada pelo paciente foram comparados entre os grupos. O sangramento durante a operação e a incidência de efeitos adversos e de complicações também foram comparados. RESULTADOS: Apesar dos escores de dor terem sido menores no Grupo R 8, 12 e 24 horas após o bloqueio, essas diferenças não foram clinicamente significativas. Regressão linear múltipla não identificou o anestésico local como variável independente. Não houve diferença no consumo de morfina, no sangramento intraoperatório e na incidência de complicações e efeitos adversos entre os dois grupos. CONCLUSÕES: A bupivacaína a 0,5% e a ropivacaína a 0,5% produziram alívio eficaz e prolongado da dor pós-operatória após artroplastia total do quadril, sem diferença clínica, quando doses equivalentes foram administradas no bloqueio do plexo lombar pela via posterior.JUSTIFICATIVA Y OBJETIVOS: El bloqueo del plexo lumbar por la vía posterior, genera una analgesia postoperatoria efectiva en la artroplastia total de la cadera. La ropivacaína y la bupivacaína no arrojaron ninguna diferencia en la eficacia analgésica en

  17. Human health risks associated with asbestos abatement.

    Science.gov (United States)

    Chrostowski, P C; Foster, S A; Anderson, E L

    1991-09-01

    Upperbound lifetime excess cancer risks were calculated for activities associated with asbestos abatement using a risk assessment framework developed for EPA's Superfund program. It was found that removals were associated with cancer risks to workers which were often greater than the commonly accepted cancer risk of 1 x 10(-6), although lower than occupational exposure limits associated with risks of 1 x 10(-3). Removals had little effect in reducing risk to school populations. Risks to teachers and students in school buildings containing asbestos were approximately the same as risks associated with exposure to ambient asbestos by the general public and were below the levels typically of concern to regulatory agencies. During abatement, however, there were increased risks to both workers and nearby individuals. Careless, everyday building maintenance generated the greatest risk to workers followed by removals and encapsulation. If asbestos abatement was judged by the risk criteria applied to EPA's Superfund program, the no-action alternative would likely be selected in preference to removal in a majority of cases. These conclusions should only be interpreted within the context of an overall asbestos risk management program, which includes consideration of specific fiber types and sizes, sampling and analytical limitations, physical condition of asbestos-containing material, episodic peak exposures, and the number of people potentially exposed.

  18. Estudo comparativo de simulações paleoclimáticas na região do Atlântico Sul Comparison of paleoclimatics simulation in the South Atlantic region

    Directory of Open Access Journals (Sweden)

    Adriana Oliveira

    2007-04-01

    Full Text Available Neste estudo são comparadas diferentes simulações de modelos paleoclimáticos para duas épocas distintas, o Último Máximo Glacial (UMG e o Presente. Esta comparação visa elucidar as principais diferenças nos processos físicos e dinâmicos do sistema oceano-atmosfera na região do oceano Atlântico Sul entre estes dois períodos. Foram analisadas as variações na climatologia anual entre estas épocas para os seguintes parâmetros: temperatura do ar (TA, precipitação (PPT e pressão ao nível do mar (PNM. As simulações numéricas analisadas são do projeto PMIP (Paleoclimate Modelling Intercomparison Project e do modelo numérico acoplado NCAR (National Center for Atmospheric Research CCSM (Comunnity Climate System Model versão 1.4 nos dois períodos de interesse. Os resultados mostram uma intensificação do presente em relação ao UMG em todas as variáveis analisadas. As diferentes simulações atmosféricas do PMIP apresentaram padrões consistentes com os apresentados no modelo NCAR CCSM, sendo observados baixos valores de EQM (Erro Quadrático Médio para grande parte da região de estudo.The present work presents a comparison between the results of different paleoclimate simulations models for two periods, the Last Glacial Maximum (LGM and the Present day. This comparison intents to elucidate the overall differences of the physical and dynamical processes from ocean-atmosphere system for these two climates. We analyzed the variations in the annual climatology between the LGM and Present for the following variables: air temperature, precipitation and sea level pressure. We used the results of the PMIP (Paleoclimate Modelling Intercomparison Project and the numerical coupled model developed at NCAR (National Center for Atmospheric Research CCSM (Comunnity Climate System Model for the two periods of interest. The results show an intensification of the present in relation to the LGM in all variables. The different atmospheric

  19. Estudo comparativo entre bupivacaína a 0,5% e mistura enantiomérica de bupivacaína (S75-R25 a 0,5% em anestesia peridural Estudio comparativo entre bupivacaína a 0,5% y mezcla enantiomérica de bupivacaína (S75-R25 a 0,5% en anestesia peridural Comparative study between 0.5% bupivacaine and 0.5% enantiomeric mixture of bupivacaine (S75-R25 in epidural anesthesia

    Directory of Open Access Journals (Sweden)

    Rosane Fossatti Gonçalves

    2003-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A mistura enantiomérica de bupivacaína (S75-R25 vem sendo empregada pela sua propriedade anestésica com menor toxicidade do que a bupivacaína racêmica. O objetivo deste estudo é comparar a bupivacaína a 0,5% com a mistura enantiomérica de bupivacaína a 0,5% (S75-R25 em anestesia peridural. MÉTODO: Foram incluídos no estudo 44 pacientes divididos em dois grupos (n=22 denominados de Bupivacaína e S75-R25. Os pacientes foram medicados com midazolam por via venosa. A anestesia peridural foi realizada no espaço L3-L4 ou L2-L3, e administrado 16 a 24 ml da solução do anestésico local. O grupo Bupivacaína recebeu bupivacaína a 0,5% com vasoconstritor. O grupo S75-R25 recebeu a mistura enantiomérica de bupivacaína a 0,5% com vasoconstritor. Foram avaliados a temperatura do membro inferior antes e após o bloqueio peridural, o tempo de latência do bloqueio, o tipo de alteração referida pelo paciente, possíveis falhas sensoriais, nível sensorial metamérico e o grau de bloqueio motor. Na sala de recuperação pós-anestésica, foi anotado o tempo de requisição do primeiro analgésico. RESULTADOS: Fizeram parte da avaliação final 41 pacientes. Os grupos foram demograficamente semelhantes. A dose per-operatória de midazolam, o volume de anestésico local por via peridural, o tempo de latência para a instalação do bloqueio, falhas sensoriais a picada da agulha, temperatura do membro inferior nos diferentes tempos, o tipo de sensação parestésica, e o nível anestésico em dermátomos foram semelhantes entre os grupos. O grau de bloqueio motor foi mais intenso para o grupo Bupivacaína, comparado ao grupo S75-R25 (p = 0,0117. O tempo para requisição do primeiro analgésico no período pós-operatório foi superior para o grupo S75-R25, comparado ao grupo Bupivacaína (596 ± 436 minutos versus 463 ± 270 minutos, respectivamente; p = 0,04572. A incidência de efeitos adversos foi semelhante entre

  20. Uso do abate comparativo na determinação da exigência de energia de mantença de gado de corte pastejando capim-elefante: descrição da metodologia e dos resultados Use of comparative slaughter to set maintenance energy requirements of beef cattle grazing elephantgrass: description of methodology and results

    Directory of Open Access Journals (Sweden)

    Carlos Augusto de Alencar Fontes

    2005-10-01

    Full Text Available Determinou-se o requerimento líquido de energia de mantença de novilhos mantidos em regime exclusivo de pastejo, em capim-elefante (Pennisetum purpureum, Schum cv. Napier. O experimento teve duração de 175 dias, utilizando-se nove piquetes, estabelecidos em terreno plano, com área individual de 0,5 ha, sob pastejo rotacionado. Foram utilizados 36 novilhos ¾Gir-Holandês com 332 ± 37 kg e média de 20 meses de idade inicial. Metade dos animais teve o tempo de pastejo restrito a quatro horas por dia, de forma a se limitar o consumo de energia a pouco acima do nível de mantença, e metade teve acesso irrestrito à pastagem. Seis novilhos foram abatidos no início do experimento, para se determinar a composição corporal inicial (grupo referência e seis (três de cada tratamento a intervalos sucessivos de 35 dias. A composição corporal dos animais abatidos foi determinada por análise química de amostras representativas de todo o corpo. As exigências líquidas de energia para mantença foram estimadas como o calor produzido em nível zero de ingestão de energia metabolizável, ajustando-se equações do logaritmo da produção de calor em função do consumo de energia metabolizável, por dia e por unidade de tamanho metabólico (kg0,75. Foi ajustada uma equação, calculando-se o tamanho metabólico em função do peso vivo (PV e outra em função do peso de corpo vazio (PCVZ. O consumo e a digestibilidade da forragem ingerida (extrusa foram determinados mensalmente. O tempo de pastejo limitado a quatro horas diárias assegurou ingestão de energia em nível pouco acima da mantença, conforme indicaram os ganhos de peso individuais, evidenciando que este procedimento pode ser recomendado para trabalhos futuros. A exigência de energia de mantença encontrada foi de 57 kcal/kg PV0,75 ou 63,27 kcal/kg PCVZ0,75. Os valores obtidos estão dentro da faixa de resultados obtidos no Brasil, sendo mais baixos que os valores recomendados no exterior, para gado europeu.The maintenance net energy requirement of steers grazing elephangrass (Pennisetum purpureum, Schum cv. Napier, as unique food, was determined. The trial lasted 175 days. Nine 0.5 ha paddocks were implanted in flat-land, in rotational grazing, were used. Thirty-six ¾ Gyr-Holstein steers averaging initial age of 20 months and 332 ± 37 kg body weight (BW were used. Half of animals had grazing time restricted to four hours daily, to limit energy intake at a level close to maintenance, and half had free access to pasture. Six steers were slaughtered at the beginning of trial to determine initial body composition (reference group, and six were slaughtered each 35 days. Body composition was determined by chemical analysis of representative samples of all animal body. The net energy maintenance requirements were estimated as heat production at zero level of metabolizable energy intake, regressing log heat production on metabolizable energy intake, per day and per unit metabolic size. Two equations were fitted: for the first, metabolic size was calculated as a function of body weight (BW0.75 and for the second as function of empty body weight (EBW0.75. Forage intake and digestibility of forage consumed (extrusa were determined monthly. The grazing time restricted to four hours a day allowed intake of energy at level close to maintenance as indicated the individual weight gains, showing that the procedure used in this research might be used in future trials. The net energy maintenance requirement observed was 57 kcal/kg LW0.75 or 63,27 kcal/kg EBW0.75. The values obtained fall into the range of values observed in Brazil and were lower than those recommended abroad for European type cattle.

  1. Estudo comparativo da função do assoalho pélvico em mulheres continentes e incontinentes na pós menopausa Comparative study of pelvic floor function in continent and incontinent postmenopausal women

    Directory of Open Access Journals (Sweden)

    Cláudia E. C. Souza

    2009-12-01

    Full Text Available CONTEXTUALIZAÇÃO: A incontinência urinária (IU é de causa multifatorial, sendo atribuída, em parte, à fraqueza da musculatura do assoalho pélvico. Apesar de ser subestimada por muitas mulheres, a avaliação funcional do assoalho pélvico (AFA pode contribuir para um correto diagnóstico e terapêutica adequada. OBJETIVOS: Comparar a função muscular do assoalho pélvico em mulheres continentes e incontinentes na pós menopausa como fator diagnóstico no tratamento da IU. MÉTODOS: A partir da investigação dos sintomas urinários, 153 mulheres (idade X=66,7±5,4 foram separadas em dois grupos (G1 incontinentes e G2 assintomáticas. Após análise dos critérios de inclusão, as mulheres foram submetidas à AFA por meio da palpação bidigital (classificação de Contreras Ortis, 1994 e à quantificação da pressão de contração perineal por meio do perineômetro (PERINA 996-2® QUARK. RESULTADOS: Observou-se prevalência de IU (54,9% na amostra estudada, sendo a incontinência urinária de esforço (IUE (41,7% o tipo mais presente. Em relação aos sintomas urinários, como a frequência miccional diurna (p=0,004 e noturna (p=0,02, o grupo G1 apresentou um valor significativamente mais alto. A AFA mostrou resultados similares durante a palpação e o perineômetro, com diferenças significativas (pBACKGROUND: Urinary incontinence (UI is multifactorial and attributed, in part, to weakness of the pelvic floor muscles. Despite being underestimated by many women, a functional pelvic floor assessment (FPA may contribute to a correct diagnosis and appropriate treatment. OBJECTIVES: To compare the function of pelvic floor muscles in continent and incontinent postmenopausal women as a diagnostic factor in UI treatment. METHODS: Based on the investigation of urinary symptoms, 153 women (age X=66.7±5.4 were divided into two groups (G1-incontinent and G2-continent. After analysis of the inclusion criteria, the women were submitted to FPA by

  2. COMPARATIVE STUDY OF CHLORATED AND PHOSPHORATED INSECTICIDES IN BAIT ATTRACTIVENESS BY “BANANA BORER” (Cosmopolites sordidus GERMAR, 1824 ESTUDO COMPARATIVO DE INSETICIDAS CLORADOS E FOSFORADOS NA ATRATIVIDADE DE ISCAS PELO “MOLEQUE DA BANANEIRA” (Cosmopolites sordidus Germar, 1824

    Directory of Open Access Journals (Sweden)

    Ronaldo Veloso Naves

    2007-09-01

    Full Text Available

    The efficiency of several insecticides for the control of the banana borer were tested in two kinds of traps. The cloride insecticides are most widely used but they are probably repellent to the weevil. DDT, Aldrin, Diazinon and Parathion were compared in two kinds of traps: slices of rhizome and pieces of pseudostem. The best results were obtained with Parathion in rhizome slices.

    A broca-da-bananeira ou “moleque” (Cosmopolites sordidus Germar é urna das pragas mais importantes da bananeira. A revisão de literatura mostra que os produtos clorados são os mais utilizados e recomendados no combate a essa praga, principalmente, Aldrin. O presente trabalho visou a testar inseticidas fosforados e também verificar o tipo de isca mais atrativa. A análise estatística dos dados obtidos demonstrou haver diferença significativa entre os tratamentos, entre os dois tipos de iscas, e na interação iscas x tratamento. Com base nos resultados e observações feitas durante a fase experimental, podemos tirar as seguintes conclusões: a As iscas do tipo sanduíche, feitas com pedaços de rizoma são mais atrativas do que as do tipo telha, feita de pedaços de pseudo-caule, cortados longitudinalmente; b O inseticida que apresentou melhores resultados foi o RHODIATOX (Parathion.

  3. Estudo comparativo entre bobinas de corpo e superfície na mamografia por ressonância magnética de próteses de silicone

    Directory of Open Access Journals (Sweden)

    Scaranelo Anabel Medeiros

    2001-01-01

    Full Text Available Ressonância magnética de mamas de pacientes com próteses mamárias de silicone foi realizada utilizando-se parâmetros técnicos predeterminados, comparando-se bobina de superfície dedicada às mamas e bobina de corpo no mesmo grupo. Foram comparadas 43 próteses mamárias do tipo gel de silicone em 24 pacientes. Observou-se que a relação sinal-ruído obtida pela bobina de superfície foi maior que a obtida pela bobina de corpo. Dobras do elastômero foram identificadas com igual resolução pelas bobinas de superfície e de corpo em cerca de 82% à direita e 95% à esquerda. Apenas em cerca de 5% dos casos as dobras foram visibilizadas utilizando-se exclusivamente a bobina de superfície específica para mamas. Demonstrou-se que o sinal do "linguine" encontrado nas próteses é visto pelos dois métodos praticamente igual. Houve apenas um caso em que o sinal do "linguine" foi visto pela bobina de superfície e não pela bobina de corpo. Evidenciou-se também que boceladuras ou deformidade de contornos podem ser avaliadas com alta concordância, utilizando-se tanto a bobina de superfície quanto a bobina de corpo. Concluiu-se que, embora a qualidade da imagem seja melhor com o uso da bobina de superfície, próteses mamárias também poderão ser avaliadas pela bobina de corpo na ausência de uma bobina específica para mamas, com o mesmo resultado diagnóstico.

  4. Coleta Seletiva – Um estudo comparativo em contextos turísticos

    OpenAIRE

    Silva, Ana Flávia da

    2015-01-01

    Anais do IV Encontro de Iniciação Científica da Unila - “UNILA 5 anos: Integração em Ciência, Tecnologia e Cultura na Tríplice Fronteira” - 05 e 06 de novembro de 2015 – Sessão Ciência Política, Sociologia, Filosofia e Antropologia O projeto Coleta Seletiva- um estudo comparativo, traz um debate sobre a eficácia da coleta seletiva em Foz. Propõe, principalmente realizar um estudo etnográfico na cidade de Foz do Iguaçu, com a intenção de identificar aspectos do trabalho na reciclagem ...

  5. Relevância dos conhecimentos, habilidades e métodos instrucionais na perspectiva de estudantes e profissionais da área contábil: estudo comparativo internacional

    Directory of Open Access Journals (Sweden)

    Ernani Ott

    2011-12-01

    Full Text Available Com o incentivo dos estudos de Albrecht e Sack (2000, Francisco e Kelly (2002 e com base na Taxonomia de Bloom (1956, o objetivo deste trabalho consiste em comparar a percepção de estudantes de cursos de Ciências Contábeis em Instituições de Ensino Superior (IES brasileiras e profissionais da Contabilidade no Brasil quanto aos conhecimentos, habilidades e métodos de ensino-aprendizagem considerados como mais importantes para a atuação do contador no mercado de trabalho. O estudo contou com uma amostra de 1.710 sujeitos: 769 estudantes matriculados em cursos de graduação em Ciências Contábeis em IES brasileiras e 941 contadores registrados nos Conselhos Regionais de Contabilidade de várias regiões brasileiras, que responderam ao questionário desenvolvido por Lin, Xiong e Liu (2005 sobre a importância atribuída pelos respondentes aos quesitos conhecimento, habilidades e métodos de ensino-aprendizagem. Os resultados encontrados evidenciaram maiores níveis de importância percebida pelos profissionais (quando comparados aos estudantes nos quesitos investigados. Comparativamente com a China e com os EUA, os escores dos profissionais brasileiros são sempre maiores para as três dimensões (conhecimentos, habilidades e métodos. Os estudantes brasileiros em comparação com os chineses, de forma geral, também atribuem maior importância para as três dimensões analisadas. Os elevados escores apontados pelos respondentes brasileiros merecem atenção por parte dos gestores das IES, levando em conta a intensidade das mudanças de perfil dos jovens estudantes e a velocidade das alterações do mercado profissional. Destaque-se que esses resultados devem ser mais explorados, analisando-se as suas razões, inferindo-se que o contexto atual da Contabilidade no Brasil, decorrente do processo global de harmonização das normas internacionais, é cenário propício para explicações a esse respeito.

  6. Estudo comparativo da resistência ao desgaste abrasivo do revestimento de três ligas metálicas utilizadas na indústria, aplicadas por soldagem com arames tubulares Comparative study of the wear resistance of three metal cored wire welded coatings used in industry

    Directory of Open Access Journals (Sweden)

    Ricardo Vinícius de Melo Leite

    2009-12-01

    Full Text Available As ligas metálicas aplicadas por soldagem em superfícies, objetivando a proteção contra o desgaste e o conseqüente aumento da vida útil de peças e equipamentos, têm sido utilizadas em larga escala nas indústrias de bens de consumo e nos setores de mineração e sucroalcooleiro. O desgaste abrasivo em peças e equipamentos representa, nestas industriais, um dos principais fatores de depreciação de capital e uma importante fonte de despesas com manutenção. Para a aplicação do revestimento por soldagem, os arames tubulares têm sido uma alternativa cada vez mais viável, devido à sua alta produtividade e qualidade de solda, substituindo, em parte, o uso do eletrodo revestido. O objetivo deste trabalho é fazer um estudo comparativo da resistência ao desgaste abrasivo do revestimento aplicado por soldagem com arames tubulares autoprotegidos de três ligas metálicas utilizadas na indústria, uma do tipo Fe-Cr-C, outra do tipo Fe-Cr-C com adição de nióbio e boro e a terceira, do tipo Fe-Cr-C com adição de nióbio. Os revestimentos anti-desgaste, conhecidos como revestimento duro, foram aplicados em chapas de aço carbono, com os mesmos parâmetros e procedimentos de soldagem. Os corpos de prova foram obtidos por corte e retificação e foram submetidos a ensaios de desgaste abrasivo, em um abrasômero Roda de Borracha, conforme procedimento estabelecido pela norma ASTM G65-91. Os resultados obtidos demonstraram que a liga Fe-Cr-C com adição de Nióbio e Boro apresentou desempenho superior em relação ao desgaste abrasivo.The metal alloys deposited by welding on the components surface, with the objective of protection against wear and the consequent increase in the lifetime of parts and equipments, have been used extensively in the consumer products industry and sectors of Mining and Sugar & alcohol. The abrasive wear on parts and equipments represents one of the main depreciation factors of capital and the major source of

  7. Pollution abatement and nature protection, fraud and trickery

    International Nuclear Information System (INIS)

    Roeder, W.

    1993-01-01

    The present general interpretation of pollution abatement as a necessary vehicle for the preservation and protection of the earth we live on is called in question by arguments which maintain that pollution abatement is an instrument used by the rich countries, especially by the U.S.A., to reduce the developing countries' population. (HP) [de

  8. 76 FR 39368 - Migratory Bird Permits; Abatement Regulations

    Science.gov (United States)

    2011-07-06

    ... promulgating migratory bird permit regulations for a permit to use raptors (birds of prey) in abatement activities. Abatement means the use of trained raptors to flush, scare (haze), or take birds or other...). Background In response to public interest in the use of trained raptors to haze (scare) depredating and other...

  9. Cogeneration plant noise: Environmental impacts and abatement

    International Nuclear Information System (INIS)

    De Renzio, M.; Ciocca, B.

    1991-01-01

    In Italy, ever increasing attention to environmental problems has led to legislation requiring cogeneration plant owners to perform environmental impact assessments in order to determine plant conformity with pollution laws. This paper, based on an in-depth analysis of physics fundamentals relevant to the nature and effects of noise, examines the principal sources of noise in industrial cogeneration plants and the intensity and range of the effects of this noise on the local environment. A review is then made of the different methods of noise pollution abatement (e.g., heat and corrosion resistant silencers for gas turbines, varying types and thicknesses of acoustic insulation placed in specific locations) that can be effectively applied to cogeneration plant equipment and housing

  10. Application of cheaper materials in pollution abatement

    International Nuclear Information System (INIS)

    Hasany, S.M.

    1997-01-01

    Industrial effluents and waste water bearing toxic metal ions and hazardous organic substances including phenols and dyes need to be treated to remove such harmful materials before their safe disposal into biosphere. For this purpose a number of cheaper and waste materials like onion skin, bagasse pith, maize ob, groundnut husk, saw dust, wood, fugal and biomass, biogas waste slurry, lignite, wool fiber, fly ash, blast furnace sludge peat and charcoal, natural clays, sands and minerals, bone and glass have been used. some of these materials can also be employed to decontaminate fresh water containing these harmful substances present in very low concentrations. These cheaper materials have been reviewed and examples have been cited mostly from the recent literature. the optimal conditions for the removal of hazardous substances including metal ions form solutions utilizing these waste materials have also been given. These low cost materials have been proven to be very effective in the spheres of pollution abatement and environmental studies. (author)

  11. Energy and GHG abatement cost curves

    Energy Technology Data Exchange (ETDEWEB)

    Alvarenga, Rafael [BHP Billiton Base Metals (Australia)

    2010-07-01

    Global warming due to various reasons but especially to emission of green house gases (GHGs) has become a cause for serious concern. This paper discusses the steps taken by BHP Billiton to reduce energy consumption and GHG emissions using cost curves. According to forecasts, global warming is expected to impact Chile badly and the rise in temperature could be between 1 and more than 5 degrees Celsius. Mining in Chile consumes a lot of energy, particularly electricity. Total energy and electricity consumption in 2007 was 13 and 36 % respectively. BHP base metals developed a set of abatement cost curves for energy and GHG in Chile and these are shown in figures. The methodology for the curves consisted of consultant visits to each mine operation. The study also includes mass energy balance and feasibility maps. The paper concludes that it is important to evaluate the potential for reducing emissions and energy and their associated costs.

  12. A NECESSIDADE DE ESTUDOS COMPARATIVOS PARA O DESENVOLVIMENTO DE INSTITUIÇÕES DEMOCRÁTICAS: DEFENSORIA PÚBLICA E SEU PAPEL NO ACESSO À JUSTIÇA

    OpenAIRE

    Faro, Julio Pinheiro; Universidade Federal do Rio Grande do Norte (UFRN)

    2016-01-01

    Resumo: o artigo propõe delinear três questões que se imbricam no rol de funções da Defensoria Pública, na tentativa de abrir o horizonte dos estudos comparativos, para o crescimento contínuo dessa importantíssima instituição democrática. As três questões são: o papel da Defensoria Pública, o significado de acesso à Justiça e o método comparativo de interpretação do Direito. Palavras-chave: Estudo comparativo de direitos; Instituições democráticas; Defensoria Pública; Acesso à justiça....

  13. Environmental innovation and the cost of pollution abatement revisited

    Energy Technology Data Exchange (ETDEWEB)

    Brechet, Thierry [Center for Operations Research and Econometrics, Chair Lhoist Berghmans in Environmental Economics and Management, Louvain School of Management, Universite catholique de Louvain, Voie du Roman Pays 34, B-1348 Louvain-la-Neuve (Belgium); Jouvet, Pierre-Andre [EconomiX, Universite de Nanterre (France); Center for Operations Research and Econometrics, Universite catholique de Louvain (Belgium)

    2008-04-01

    It is widely assumed in the literature that environmental innovation reduces the marginal cost of pollution abatement. In this paper we show that this is not necessarily the case and we provide some unexpected outcomes. (author)

  14. Sulfamethoxazole abatement by photo-Fenton

    International Nuclear Information System (INIS)

    Gonzalez, Oscar; Sans, Carme; Esplugas, Santiago

    2007-01-01

    The objective of this work was to study the abatement of 200 mg L -1 sulfamethoxazole (SMX) solution by means of photo-Fenton process. Biodegradability of the treated solutions was followed by the ratio biochemical oxygen demand at five days/chemical oxygen demand (BOD 5 /COD) and toxicity by Microtox[reg] and inhibition tests. Experiments with different initial concentration of H 2 O 2 were carried out. The initial amount of Fe 2+ and pH of the solution were set at 10 mg L -1 and 2.8 respectively. The temperature of the reactor was kept constant in all the experiments (25 ± 0.8 deg. C). Photo-Fenton process is thought to be a successful treatment step to improve the biodegradability of wastewater containing SMX. The complete antibiotic removal was achieved for a H 2 O 2 dose over 300 mg L -1 . Biodegradability (BOD 5 /COD) rose from zero (SMX solution) to values higher than 0.3 (treated solutions). Toxicity and inhibition tests pointed out in the same direction: oxidized intermediates for initial H 2 O 2 dose over 300 mg L -1 showed no toxicity effects on pure bacteria and no inhibition on activated sludge activity

  15. UNEP greenhouse gas abatement costing studies

    Energy Technology Data Exchange (ETDEWEB)

    Shakespeare Maya, R. (Southern Centre for Energy and Environment (Zimbabwe)); Muguti, E. (Ministry of Transport and Energy. Department of Energy (Zimbabwe)); Fenhann, J.; Morthorst, P.E. (Risoe National Laboratory. Systems Analysis Department (Denmark))

    1992-08-01

    The UNEP (United Nations Environment Programme) programme of Greenhouse Gas Abatement Costing Studies is intended to clarify the economic issues involved in assessing the costs of limiting emissions of greenhouse gases and to propose approaches to comparable costing studies. Phase 1 of the Zimbabwe country study describes the current energy situation in Zimbabwe related to the national economy, energy supply and demand and amounts of greenhouse gas emissions. Factors regarding the geography, (including a map illustrating the degree and character of land degradation by erosion) population, politics, international relations, land-use and management of the energy sector are dealt with in detail and the text is illustrated with data compiled from the study. It is estimated that Zimbabwe consumed 270.4 Tj of energy during 1988 and emitted 21.7 tonnes of carbon dioxide. An emission intensity of 80.2 tonnes/Tj for the whole economy and 63.6 tonnes/Tj for electric power generation alone was calculated. Forecasting for the year 2020 estimated carbon dioxide emission intensities of 73.5 tonnes/Tj for the whole economy and 43.7 tonnes for power generation. Net carbon dioxide emissions are predicted to be 30-42 tonnes during 2020. (AB).

  16. UNEP greenhouse gas abatement costing studies

    International Nuclear Information System (INIS)

    Shakespeare Maya, R.; Muguti, E.; Fenhann, J.; Morthorst, P.E.

    1992-08-01

    The UNEP (United Nations Environment Programme) programme of Greenhouse Gas Abatement Costing Studies is intended to clarify the economic issues involved in assessing the costs of limiting emissions of greenhouse gases and to propose approaches to comparable costing studies. Phase 1 of the Zimbabwe country study describes the current energy situation in Zimbabwe related to the national economy, energy supply and demand and amounts of greenhouse gas emissions. Factors regarding the geography, (including a map illustrating the degree and character of land degradation by erosion) population, politics, international relations, land-use and management of the energy sector are dealt with in detail and the text is illustrated with data compiled from the study. It is estimated that Zimbabwe consumed 270.4 Tj of energy during 1988 and emitted 21.7 tonnes of carbon dioxide. An emission intensity of 80.2 tonnes/Tj for the whole economy and 63.6 tonnes/Tj for electric power generation alone was calculated. Forecasting for the year 2020 estimated carbon dioxide emission intensities of 73.5 tonnes/Tj for the whole economy and 43.7 tonnes for power generation. Net carbon dioxide emissions are predicted to be 30-42 tonnes during 2020. (AB)

  17. UNEP greenhouse gas abatement costing studies

    International Nuclear Information System (INIS)

    Maya, R.S.; Nziramasanga, N.; Muguti, E.; Fenhann, J.

    1993-10-01

    The aim was to assess options and cost of reducing emissions of greenhouse gases (with emphasis on carbon dioxide) from human activity in Zimbabwe. A brief description of the country's economy and energy sector, policy and pricing and regulations is given and substantial data related to the country's economy, technology, energy consumption, emission and fuel prices are presented. The energy demand in households and for other sectors in Zimbabwe are assessed, and documented in the case of the former. The reference scenarios on energy demand and supply assess greenhouse gas emissions under conditions whereby the present economic growth trends predominate. Energy efficiency improvements are discussed. Abatement technology options are stated as afforestation for carbon sequestration, more efficient coal-fired industrial boilers, extended use of hydroelectricity, prepayment electric meters, minimum tillage, optimization of coal-fired tobacco barns, industrial power factor correction equipment, domestic biogas digesters, solar water heating systems, time switches in electric geysers, optimization of industrial furnaces, photovoltaic water pumps, production of ammonia from coal for fertilizing purposes, and recovery of coke oven gases for use in thermal power generation. (AB)

  18. Economic aspects of air pollution abatement. Air pollution abatement recommended for economic reasons; Oekonomische Aspekte des Klimaschutzes. Gerade aus oekonomischer Sicht ist Klimaschutz sinnvoll

    Energy Technology Data Exchange (ETDEWEB)

    Jasper, J.; Serger, H. [Hannover Univ. (Germany). Lehrstuhl fuer Mikrooekonomik

    2005-07-01

    Climate change is not only dangerous but also expensive. On the other hand, air pollution abatement measures are costly as well. Scientists of the Microeconomics Department investigated how air pollution abatement and cost efficiency can best be combined. (orig.)

  19. Comparative study between polypropylene and polypropylene/poliglecaprone meshes used in the correction of abdominal wall defect in rats Estudo comparativo entre as telas de polipropileno e polipropileno/poliglecaprone utilizadas na correção de defeito na parede abdominal ventral de ratos

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Lima Utrabo

    2012-04-01

    Full Text Available PURPOSE: To evaluate the healing process of a defect in the ventral abdominal wall of rats, comparing the polypropylene and polypropylene/poliglecaprone meshes on the 30th and 60th postoperative day. METHODS: Thirty two Wistar rats were submitted to a ventral abdominal wall defect, with integrity of the parietal peritoneum. In the repair, were used polypropylene (group A and polypropylene/poliglecaprone (group B meshes. The groups were subdivided into four subgroups of eight animals euthanized on the 30th (A30 and B30 and 60th postoperative day (A60 and B60. Fragments of the abdominal wall of the animals were submitted to macroscopic, tensiometric and histological evaluations. RESULTS: The tensiometry on subgroup A30 showed a mean average break point of 0.78 MPa and in A60, 0.66 Mpa. In subgroup B30 it was 0.84 MPa and in B60, 1.27 Mpa. The score of the inflammatory process showed subacute phase on A30 and B30 sub-groups and chronic inflammatory process in subgroups A30 and 60B. CONCLUSIONS: The tensile strength was higher on the wall repaired by polypropylene/poliglecaprone mesh in the 60th post-operative day. Histology showed higher concentration of fibrosis on the surface of the polypropylene mesh with a tendency to encapsulation. In polypropylene/poliglecaprone subgroups the histology showed higher concentration of fibrosis on the surface of mesh filaments.OBJETIVO: Avaliar a cicatrização de um defeito, na parede abdominal ventral de ratos, comparando-se as telas de polipropileno e polipropileno/poliglecaprone no 30º e 60º dia do pós-operatório. MÉTODOS: Trinta e dois ratos Wistar foram submetidos à produção de defeito na parede abdominal ventral, com integridade do peritônio parietal. Na correção foram utilizadas as telas de polipropileno (grupo A e polipropileno/poliglecaprone (grupo B. Houve subdivisão em quatro subgrupos (A30, A60, B30 e B60 de oito animais que foram submetidos à eutanásia no 30º e 60º dia do p

  20. UNEP greenhouse gas abatement costing studies

    International Nuclear Information System (INIS)

    Morthorst, P.E.; Grohnheit, P.E.

    1992-04-01

    The project initiated by the United Nations Environment Programme aims to clarify some economic issues involved in greenhouse gas limitation by carrying out comparative studies of various nations. The programme should contribute to the establishment of a consistent methodological framework for making cost assessments of greenhouse gas abatement and help to support countries in the process of establishing national and international agreements on actions to combat climate change. The publication gives a survey of Danish energy demand and supply, emissions and current energy policy issues and reviews existing studies of carbon dioxide reductions. This includes the overall national environmental policy and the plan of action for the transport sector. Conclusions are that there seems to be a long-term potential for significant reduction of CO 2 emission by 10-15% by 2010 with no additional costs, a 50% reduction will cost DKK 25-50 per kg reduced CO 2 . The most promising options include increased use of cogeneration of heat and electricity, and electricity conservation in households, services and in industry. Economic growth is forecast as ca. 2.7% and energy prices for oil products should increase by ca. 4.8%. A 40% reduction of CO 2 emission in the year 2005 would increase costs by 1-2%, and a reduction of two thirds of present emission should be possible at no additional cost compared to the reference cases. There is general agreement that a reduction of carbon dioxide emission of 15-30% by 2005-10 should involve no additional costs to society. (AB) (11 refs.)

  1. Estudo comparativo do efeito de solução de NaF a 0,5%, através de bochecho, escovação e ambos, na prevenção da cárie dental

    Directory of Open Access Journals (Sweden)

    Roberto Augusto Castellanos

    1983-12-01

    Full Text Available Foi realizado estudo a fim de comparar o efeito na redução do ataque de cárie de uma solução de fluoreto de sódio, na concentração de 0,5% aplicada sob a forma de bochecho, escovação, escovação e bochecho, uma vez por semana, sob supervisão, durante um período escolar de 10 meses em 424 escolares de 9 a 10 anos de idade matriculados em cinco escolas estaduais do Estado de São Paulo (Brasil. As crianças foram distribuídas igualmente em três grupos experimentais e um grupo controle, de acordo com a idade dental (nº de superfícies de dentes permanentes irrompidas e experiência anterior de cárie (CPO-S. Foram examinadas 307 crianças e os resultados mostraram que houve uma redução, estatisticamente significante ao nível de 0,05, de ataque de cárie entre os grupos experimentais e controle, da ordem de 35,19% para o grupo de bochecho (grupo I, de 37,91% para o grupo de escovação (grupo II, e de 49,77% para o grupo de escovação e bochecho (grupo IV. Quando comparados os grupos experimentais entre si não houve diferenças estatisticamente significantes ao nível de 0,05.

  2. Bem-estar animal no manejo pré-abate e a influência na qualidade da carne suína e nos parâmetros fisilógicos do estresse Animal welfare at pre-slaughter handling and the influence on pork meat quality and on stress physiological parameters

    Directory of Open Access Journals (Sweden)

    Charli Beatriz Ludtke

    2012-03-01

    Full Text Available Avaliaram-se os efeitos do sistema de embarque/desembarque (S1: veículo 1, carroceria com piso móvel e uso de prancha de manejo para condução dos suínos; S2: veículo 2, carroceria com piso fixo e uso de bastão elétrico para condução dos suínos e da genética (A, B e C sobre as características físico-químicas da carne, lesões na pele e parâmetros fisiológicos do estresse. Foram utilizados 120 suínos machos castrados (peso médio de 115kg provenientes de três granjas divididos em seis grupos (n=20 e submetidos a dois tipos de veículos para o transporte. Para a análise estatística, consideram-se, no modelo de análise da variância, os efeitos de blocos (dias de avaliação, sistema de embarque/desembarque, genética e interação entre as linhagens genéticas e modelos dos veículos dispostos no esquema fatorial (2 modelos de veículos x 3 linhagens genéticas. Os valores médios obtidos para o pH24h (5,60±0,046 e 5,57±0,046, cor*24h(41,52±1,256 e 41,21±1,486, perda por exsudação (4,76±0,391 e 4,86±0,391, capacidade de retenção de água (0,038±0,03 e 0,039±0,003 não demonstraram diferença entre os sistemas de embarque e desembarque (S1 e S2 nas genéticas A, B e C. A incidência de escoriações de pele no pernil, corpo e paleta não diferiram entre os métodos de embarque e desembarque nas genéticas A, B e C. Ambos os sistemas S1 e S2 geraram baixos níveis de estresse e proporcionaram facilidade de manejo nas genéticas avaliadas.The effects of the loading/unloading systems have been evaluated (S1: vehicle 1, with mobile floor and using management board for conducting pigs, S2: vehicle 2, with fixed floor and using electric goads to conduct pigs and genetic (A, B and C on the physiochemical characteristics of the meat, skin damage and physiological parameters of stress. 120 castrated pigs have been used (average weight 115kg from three farms, divided into six groups (n = 20 and subjected to two types of

  3. Estudo comparativo do tono muscular na paralisia cerebral tetraparética em crianças com lesões predominantemente corticais ou subcorticais na tomografia computadorizada de crânio Comparative study of muscular tonus in spastic tetraparetic cerebral palsy in children with predominantly cortical and subcortical lesions in computerized tomography of the skull

    Directory of Open Access Journals (Sweden)

    Cristina Iwabe

    2003-09-01

    Full Text Available OBJETIVO: Comparar a distribuição e intensidade do tono muscular na paralisia cerebral tetraparética espástica (PC-T, correlacionando os dados clínicos com a localização da lesão no sistema nervoso central. MÉTODO: Foram incluídas 12 crianças de dois a quatro anos de idade com lesões predominantemente corticais (seis crianças e subcorticais (seis crianças. O tono foi analisado nos membros superiores (MMSS e inferiores (MMII baseado no protocolo de Durigon e Piemonte. RESULTADOS: Não houve diferença significante quanto à intensidade e distribuição de tono em MMSS e MMII nos dois grupos. Comparando os MMSS e MMII de sujeitos do mesmo grupo, os MMII apresentaram mais assimetrias e maior intensidade do tono do que os MMSS. CONCLUSÃO: Neste estudo, crianças com PC devido a lesões predominantemente corticais ou subcorticais apresentam déficit semelhante na modulação de tono, ocasionando distribuição simétrica e homogênea de hipertonia que predomina em MMII.OBJECTIVE: To compare distribution and intensity of muscular tonus in spastic tetraparetic cerebral palsy (CP, correlating the clinical data with lesion location in the central nervous system. METHOD: Twelve children aged two to four years old with predominantly cortical lesions (six children and subcortical lesions (six children were included. The tonus was analyzed in the upper (UULL and lower limbs (LLLL based on Durigon and Piemonte protocol. RESULT: There was no significant difference regarding tonus intensity and distribution in the UULL and LLLL in both groups. Comparing the upper and lower limbs of subjects in the same group, the LLLL presented more asymmetry and higher tonus intensity than the UULL. CONCLUSION: In this study children with CP as a result of predominantly cortical or subcortical lesions present a similar deficit in tonus modulation, causing a symmetric and homogeneous distribution of hypertonicity, which is predominant in the LLLL.

  4. How to encourage road noise abatement in Nordic municipalities

    DEFF Research Database (Denmark)

    Sørensen, Claus Hedegaard

    2008-01-01

    Road noise nuisance is a huge problem in the Nordic countries, and it seems diffi cult for Nordic countries to meet national targets for its reduction. One reason for this is the lack of municipal activities in the fi eld. Th us the research question that this article seeks to answer in relation...... to already existing residential areas and roads is: which conditions in the municipal organisation and its institutional environment contribute to making municipalities provide and implement noise abatement measures? Th e assumption is that three factors infl uence how the municipalities prioritize among...... political issues: the municipal organisation itself, the local institutional environment (citizens, business and NGOs), and the state and trans-municipal networks. A study of the anatomy of municipal road noise abatement policy shows that conditions for implementing road noise abatement in existing...

  5. Measurements of environmental policy for air pollution abatement

    International Nuclear Information System (INIS)

    Friedrich, R.

    1993-01-01

    The first part of the study goes into the determination of efficient strategies for the reduction of air pollutants. The developed method is not only derived theoretically but is tested with the concrete example of emissions sources of a German state. The second part goes into the question what the government can do in order to attain that air pollution abatement measures recognized as being efficient will be put into practice. As market economy mechanisms have advantages over central state planning in the allocation of economic resources the question arises if not also for environmental protection market economy tools may contribute to an improvement of the efficiency of air pollution abatement. Therefore the suitability of different tools of environmental policy for the realization of efficient air pollution abatement is investigated and evaluated. This is again not done abstractly but with existing emission sources. (orig./HSCH). 32 figs., 12 tabs [de

  6. Dynamics of carbon abatement in the Second Generation Model

    International Nuclear Information System (INIS)

    Sands, Ronald D.

    2004-01-01

    The Second Generation Model (SGM) is a collection of computable-general-equilibrium models developed for analysis of policies to reduce greenhouse gas emissions. Behavior of the Second Generation Model, with respect to changes in carbon prices, can be summarized using marginal abatement cost curves. Marginal abatement costs vary over time, as capital stocks adjust to a new set of prices, and across countries, depending in part on the mix of fuels in the existing energy system. This paper documents the production structure in SGM, marginal abatement cost curves derived from SGM with constant-carbon-price experiments, an application to several Energy Modeling Forum scenarios, and a methodology for including carbon capture and disposal in SGM

  7. Economic incentives for optimal sulfur abatement in Europe

    International Nuclear Information System (INIS)

    Halkos, G.E.

    1995-01-01

    This article reviews and develops theoretical and empirical representations of economic incentives for implementing pollution control strategies. A number of alternative economic instruments exist, which, if applied internationally, could encourage implementation of abatement strategies by counties. The article considers means of persuading countries to minimize abatement costs. A comparison between the pollution targets achieved by the imposition of a uniform charge rate and by differentiated charge rates is discussed, and empirical results are provided with associated conclusions. These results are compared with a simple standards setting in the form of critical loads, in order to assess empirically if economic instruments work better than regulations

  8. Pricing emission permits in the absence of abatement

    International Nuclear Information System (INIS)

    Hintermann, Beat

    2012-01-01

    If emissions are stochastic and firms are unable to control them through abatement, the cap in a permit market may be exceeded, or not be reached. I derive a binary options pricing formula that expresses the permit price as a function of the penalty for noncompliance and the probability of an exceeded cap under the assumption of no abatement. I apply my model to the EU ETS, where the rapid introduction of the market made it difficult for firms to adjust their production technology in time for the first phase. The model fits the data well, implying that the permit price may have been driven by firms hedging against stochastic emissions.

  9. Estudo comparativo dos ensaios de CBR e Mini-CBR para solos de Uberlândia-MG

    OpenAIRE

    Souza, Ricardo Andrade de

    2007-01-01

    O presente trabalho trata de um estudo comparativo entre o ensaio de CBR e o ensaio de Mini-CBR para os solos de Uberlândia MG, visando ampliar a utilização do Mini-CBR, tendo em vista suas vantagens em relação ao CBR. As principais vantagens do referido ensaio são maior praticidade do ensaio, exigência de menor quantidade de amostra, maior rapidez na execução, solicitação de menor esforço físico para execução e menor influência do operador na execução, sendo também, menos dispendioso que o...

  10. Bupivacaína com excesso enantiomérico (S75-R25 a 0,5%, bupivacaína racêmica a 0,5% e lidocaína a 2% no bloqueio do nervo facial pela técnica de O'Brien: estudo comparativo Bupivacaína con exceso enantiomérico (S75-R25 a 0,5%, bupivacaína racémica a 0,5% y lidocaína a 2% en el bloqueo del nervio facial por la técnica de O'Brien: estudio comparativo 0.5% enantiomeric excess bupivacaine (S75-R25, 0.5% racemic bupivacaine, and 2%lidocaine for facial nerve block by the O'Brien technique: a comparative study

    Directory of Open Access Journals (Sweden)

    Luis Henrique Cangiani

    2007-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Mistura de enantiômeros da bupivacaína em diferentes formulações, S75-R25 ou S90-R10, foi proposta objetivando menor cardiotoxicidade e bloqueio motor satisfatório. O objetivo deste estudo foi comparar o tempo de instalação e o grau de bloqueio motor utilizando a bupivacaína com excesso enantiomérico de 50% (S75-R25 a 0,5%, a bupivacaína racêmica a 0,5% e a lidocaína a 2% no bloqueio do nervo facial pela técnica de O'Brien. MÉTODO: Participaram do estudo 45 pacientes, com idade acima de 60 anos, programados para tratamento cirúrgico de catarata sob bloqueio retrobulbar, precedido pela acinesia de O'Brien. Os pacientes foram divididos de forma aleatória em três grupos de 15, de acordo com a solução anestésica empregada para o bloqueio do nervo facial: Grupo L (Lidocaína, Grupo B (Bupivacaína e Grupo M (S75-R25. Foram injetados 3 mL da solução. Foram verificados o tempo de instalação e o grau do bloqueio motor (Graus 1, 2 e 3 aos 15 segundos após a injeção e, sucessivamente, a cada 15 segundos até completar 180 segundos. RESULTADOS: As manifestações iniciais do bloqueio foram mais rápidas (15s no Grupo L do que nos Grupos B e M. Não houve diferença entre os Grupos B e M. Todos os pacientes do Grupo L apresentaram bloqueio motor Grau 3 em até 60 segundos, tempo menor do que aqueles observados nos Grupos B e M (120 e 135, respectivamente. Os grupos B e M tiveram comportamento semelhante ao longo do estudo, não havendo diferença estatística entre eles. Aos 180 segundos o bloqueio motor Grau 3 foi semelhante nos três grupos. CONCLUSÕES: A instalação do bloqueio motor e o grau máximo de bloqueio foram obtidos com mais rapidez com a lidocaína a 2%. O mesmo grau foi atingido pela bupivacaína racêmica e pela S75-R25, porém em tempo maior. Esses dois anestésicos apresentaram o mesmo comportamento com relação à latência e ao grau máximo do bloqueio motor, e ao término de 180

  11. Marginal abatement cost curves for NOx that account for ...

    Science.gov (United States)

    A marginal abatement cost curve (MACC) traces out the relationship between the quantity of pollution abated and the marginal cost of abating each additional unit. In the context of air quality management, MACCs typically are developed by sorting end-of-pipe controls by their respective cost effectiveness. Alternative measures, such as renewable electricity, energy efficiency, and fuel switching (RE/EE/FS), are not considered as it is difficult to quantify their abatement potential. In this paper, we demonstrate the use of an energy system model to develop a MACC for nitrogen oxides (NOx) that incorporates both end-of-pipe controls and these alternative measures. We decompose the MACC by sector, and evaluate the cost-effectiveness of RE/EE/FS relative to end-of-pipe controls. RE/EE/FS are shown to produce considerable emission reductions after end-of-pipe controls have been exhausted. Furthermore, some RE/EE/FS are shown to be cost-competitive with end-of-pipe controls. Demonstrate how the MARKAL energy system model can be used to evaluate the potential role of renewable electricity, energy efficiency and fuel switching (RE/EE/FS) in achieving NOx reductions. For this particular analysis, we show that RE/EE/FSs are able to increase the quantity of NOx reductions available for a particular marginal cost (ranging from $5k per ton to $40k per ton) by approximately 50%.

  12. Gas Flaring, Environmental Pollution and Abatement Measures in ...

    African Journals Online (AJOL)

    The environmental impact of gas flaring on the oil bearing enclave of the Niger Delta, Nigeria, was examined with a view to evaluating the abatement measures put in place by the Federal government of Nigeria and the oil producing companies. Primary and secondary information and data were analyzed during the study.

  13. Efficient air pollution abatement for regions in China

    Energy Technology Data Exchange (ETDEWEB)

    Hu, J.L. [National Chiao Tung University, Taipei (Taiwan). Inst. for Business & Management

    2006-08-15

    This paper computes the efficient air pollution abatement ratios of 30 regions in China during the period 1996-2002. Three air emissions (SO{sub 2}, soot and dust) are considered. Data envelopment analysis (DEA) with a single output (real GDP) and five inputs (labour, real capital stock, SO{sub 2}, dust and soot emissions) is used to compute the target emissions of each region for each year. The efficient abatement ratios of each region in each year are then obtained by dividing the target emission by the actual emission of an air pollutant. Our major findings are: 1. The eastern area is the most efficient region with respect to SO{sub 2}, soot and dust emissions in every year during the research period. 2. The eastern, central and western areas have the lowest, medium and highest 1996-2002 average target abatement ratios of SO, (22.09%, 42.23% and 57.58%), soot (26.19%, 56.34% and 66.37%) and dust (15.20%, 29.09% and 40.59%), respectively. 3. These results are consistent with the Environmental Kuznets Curve (EKC) theory, whereby a more developed area will use environmental goods more efficiently than a less developed area. 4. Compared to dust emission, the average target abatement ratios for SO{sub 2} and soot emissions (as direct outcomes of burning coal) are relatively much higher for all three areas.

  14. Marginal abatement cost curves for NOx incorporating both controls and alternative measures

    Science.gov (United States)

    A marginal abatement cost curve (MACC) traces out the efficient marginal abatement cost level for any aggregate emissions target when a least cost approach is implemented. In order for it to represent the efficient MAC level, all abatement opportunities across all sectors and loc...

  15. Marginal abatement cost curves for NOx that account for renewable electricity, energy efficiency, and fuel switching

    Science.gov (United States)

    A marginal abatement cost curve (MACC) traces out the relationship between the quantity of pollution abated and the marginal cost of abating each additional unit. In the context of air quality management, MACCs typically are developed by sorting end-of-pipe controls by their resp...

  16. Marginal abatement cost curve for NOx incorporating controls, renewable electricity, energy efficiency and fuel switching

    Science.gov (United States)

    A marginal abatement cost curve (MACC) traces out the relationship between the quantity of pollution abated and the marginal cost of abating each additional unit. In the context of air quality management, MACCs typically are developed by sorting end-of-pipe controls by their rela...

  17. Marginal abatement cost curve for NOx incorporating controls, renewable electricity, energy efficiency and fuel switching

    Science.gov (United States)

    A marginal abatement cost curve (MACC) traces out the relationship between the quantity of pollution abated and the marginal cost of abating each additional unit. In the context of air quality management, MACCs typically are developed by sorting end-of-pipe controls by their resp...

  18. Estudo comparativo entre dois algoritmos de identificação de estrelas para um sensor de estrelas autônomo de campo largo.

    OpenAIRE

    Márcio Afonso Arimura Fialho

    2007-01-01

    Neste trabalho é feito um estudo comparativo entre dois algoritmos de identificação de estrelas desenvolvidos para um sensor de estrelas autônomo de campo largo em projeto no INPE - Instituto Nacional de Pesquisas Espaciais. A comparação é realizada com base nas especificações técnicas deste sensor de estrelas, cujas principais características são: campo de visada quadrado de 25,5 x 25,5 , matriz fotodetectora de 1024 1024 pixels de tecnologia CMOS-APS e precisão na determinação de atitude...

  19. O controle interno e auditoria governamental: comparativo

    OpenAIRE

    Denise Fontenele de Oliveira

    2014-01-01

    Este artigo tem como propósito analisar alguns aspectos relacionados ao controle interno na Administração Pública brasileira. O controle interno é visto, sobretudo pela literatura contabilista, como uma das principais formas de controle na atividade pública. Por essa razão é que devem ser garantidas algumas prerrogativas às entidades, como, por exemplo, a autonomia funcional. Outra questão também visa demonstrar que a auditoria interna governamental é o ápice da pirâmide do sistema de control...

  20. Potential Cost-Effective Opportunities for Methane Emission Abatement

    Energy Technology Data Exchange (ETDEWEB)

    Warner, Ethan [Joint Inst. for Strategic Energy Analysis, Golden, CO (United States); Steinberg, Daniel [Joint Inst. for Strategic Energy Analysis, Golden, CO (United States); Hodson, Elke [U.S. Department of Energy, Washington, DC (United States); Heath, Garvin [Joint Inst. for Strategic Energy Analysis, Golden, CO (United States)

    2015-08-01

    The energy sector was responsible for approximately 84% of carbon dioxide equivalent (CO2e) greenhouse gas (GHG) emissions in the U.S. in 2012 (EPA 2014a). Methane is the second most important GHG, contributing 9% of total U.S. CO2e emissions. A large portion of those methane emissions result from energy production and use; the natural gas, coal, and oil industries produce approximately 39% of anthropogenic methane emissions in the U.S. As a result, fossil-fuel systems have been consistently identified as high priority sectors to contribute to U.S. GHG reduction goals (White House 2015). Only two studies have recently attempted to quantify the abatement potential and cost associated with the breadth of opportunities to reduce GHG emissions within natural gas, oil, and coal supply chains in the United States, namely the U.S. Environmental Protection Agency (EPA) (2013a) and ICF (2014). EPA, in its 2013 analysis, estimated the marginal cost of abatement for non-CO2 GHG emissions from the natural gas, oil, and coal supply chains for multiple regions globally, including the United States. Building on this work, ICF International (ICF) (2014) provided an update and re-analysis of the potential opportunities in U.S. natural gas and oil systems. In this report we synthesize these previously published estimates as well as incorporate additional data provided by ICF to provide a comprehensive national analysis of methane abatement opportunities and their associated costs across the natural gas, oil, and coal supply chains. Results are presented as a suite of marginal abatement cost curves (MACCs), which depict the total potential and cost of reducing emissions through different abatement measures. We report results by sector (natural gas, oil, and coal) and by supply chain segment - production, gathering and boosting, processing, transmission and storage, or distribution - to facilitate identification of which sectors and supply chain

  1. Endogenous Technological Progress with Uncertainty and Carbon Abatement Polices

    Energy Technology Data Exchange (ETDEWEB)

    Cho, G.L. [Korea Energy Economics Institute, Euiwang (Korea)

    2001-11-01

    Most greenhouse gas abatement policy models tend to neglect a potentially important element that is relevant to the induced technology changes(ITC). These models that incorporate technological change treat such a change as autonomous, that is, unaffected by changes in prices brought about by policy reforms. However, climate change policies can create economic incentives to engage in more extensive R and D oriented toward the discovery of new production techniques that mitigate a reliance on convectional fuels, ultimately resulting in impacts on the policies themselves. In order to investigate the significance of induced technology for the attractiveness of abatement policies, this study develop the multi-sectoral dynamic CGE model by incorporating two characteristics of technological progress: the endogenous growth model with externality of technology in Romer (1986) and Lucas(1988) and the technological changes resulting from profit maximizing investment in R and D in Rebelo(1991) and Jones and Manuelli(1990). Furthermore, technological progress is affected by not only the economical factors but also the political and institutional system that cannot be captured in this model. This study considers such uncertainty in the technological progress as technology shock as in RBC school. This study shows that the presence of ITC implies lower costs of achieving a given abatement target in terms of the reduction cost per ton of carbon and GDP losses. The presence of ITC reduces the GDP losses by 0.9%p{approx}1.5%p compared with the absence of the ITC. As the abatement target is substantially high, R and D is reduced significantly even in the presence of ITC. Therefore, it is necessary to seriously consider the tax recycling for enhancing R and D investment, which minimizes the GDP losses. The reduction cost is highly sensitive to the uncertainty in technological progress. The technology shock leads the reduction cost to widely vary, in terms of standard deviation, 3

  2. Economic restructuring in Eastern Europe and acid rain abatement strategies

    International Nuclear Information System (INIS)

    Amann, Markus; Klaassen, Ger; Schoepp, Wolfgang; Soerensen, Lene; Hordijk, Leen

    1992-01-01

    Acid rain abatement strategies in Europe are currently being discussed in view of the expiration of the Helsinki Protocol on SO 2 emission reduction. The changing energy situation in Eastern European countries is expected to have an influence on the deposition pattern in Europe. The paper presents a consistent energy scenario for Eastern European countries and compares optimal strategies to reduce SO 2 emissions. These strategies are based on runs with the RAINS model in which environmental targets have been set based on critical loads for sulphur. The analysis shows that economic restructuring and efficiency improvements in Eastern European countries, as well as in Western Europe, may result in significantly lower sulphur abatement costs. Potential assistance to Eastern Europe to guarantee desired environmental standards in Western countries should therefore focus not only on providing emission control devices but also on the success of the economic transition process. (author)

  3. Direct crowding out, optimal taxation and pollution abatement

    Energy Technology Data Exchange (ETDEWEB)

    Van der Ploeg, Frederick [FEE, University of Amsterdam, Amsterdam (Netherlands); Bovenberg, A. Lans [CentER, Tilburg University, Tilburg (Netherlands)

    1993-05-01

    The interactions between direct crowding out, the provision of public goods, optimal taxation and environmental policy are explored. Greener preferences induce a larger tax rate by raising the non-distortionary level of the tax rate. If the marginal productivity of public abatement diminishes rapidly environmental quality improves mainly through a fall in economic activity and emissions. In this case, public consumption increases which crowds out labour supply and private consumption. However, if environmental policy is very effective public consumption falls in order to make room for public abatement. In this case, if labour supply is inelastic with respect to the after-tax wage and direct crowding in is strong, labour supply and economic activity may expand. 1 fig., 7 refs.

  4. Marginal abatement cost curves for Heavy Duty Vehicles. Background report

    Energy Technology Data Exchange (ETDEWEB)

    Schroten, A.; Warringa, G.; Bles, M.

    2012-09-15

    Cost curves were calculated for CO2 abatement technologies for Heavy Duty Vehicles. These curves were elaborated for eight different vehicle categories (six categories of truck and two subcategories), as well as for an 'average' truck and bus. Given that cost curves depend very much on underlying assumptions, the MACH model (Marginal Abatement Costs of Heavy duty vehicles) was developed. This model allows users to enter their own assumptions with respect to parameters like fuel prices and cost and lifetime of individual technologies, with the model then generating new cost curves for the various vehicle categories. This background report contains a description of the model and a summary of the results of several model runs.

  5. Enforcement of Intellectual Property, Pollution Abatement, and Directed Technical Change

    OpenAIRE

    Schaefer, Andreas

    2017-01-01

    We theoretically investigate the interaction between endogenous enforcement of intellectual property rights (IPRs) and tax-financed pollution abatement measures. IPRs affect dirty and clean intermediates alike such that higher IPR enforcement may promote the transition to the clean technology, if this technology is productive enough. If the green technology is relatively unproductive, higher IPRs promote the dirty technology while pollution is increasing. As households are due to subsistence ...

  6. Abate distribution and dengue control in rural Cambodia.

    Science.gov (United States)

    Khun, Sokrin; Manderson, Lenore H

    2007-02-01

    Sustainable public health and community collaboration and partnerships are essential for the effective elimination of vector breeding sites to prevent dengue fever. A prerequisite is that community members appreciate the importance of the infection, understand its transmission and preventive activities, and are able to translate such knowledge to action. In this paper, we draw on an ethnographic study of two villages in the eastern province of Kampong Cham, using data collected from qualitative research methods and entomological surveys to describe community knowledge of the vector, practices related to the reduction of breeding sources, and the effectiveness of temephos to control larvae. During the study period, temephos (distributed as Abate) was applied in water containers only in the rainy season, although these containers were also positive with larvae in the dry season. Discarded containers, ignored in terms of control activities, had twice the number of larvae as water storage containers. The continued reliance on Abate creates financial and technical problems, while its inappropriate distribution raises the possibility of larvicide resistance. Based on research findings, we argue that control strategies emphasizing the use of Abate should be reconsidered.

  7. Pollution Emissions, Environmental Policy, and Marginal Abatement Costs.

    Science.gov (United States)

    He, Ling-Yun; Ou, Jia-Jia

    2017-12-05

    Pollution emissions impose serious social negative externalities, especially in terms of public health. To reduce pollution emissions cost-effectively, the marginal abatement costs (MACs) of pollution emissions must be determined. Since the industrial sectors are the essential pillars of China's economic growth, as well as leading energy consumers and sulfur dioxide (SO₂) emitters, estimating MACs of SO₂ emissions at the industrial level can provide valuable information for all abatement efforts. This paper tries to address the critical and essential issue in pollution abatement: How do we determine the MACs of pollution emissions in China? This paper first quantifies the SO₂ emission contribution of different industrial sectors in the Chinese economy by an Input-Output method and then estimates MACs of SO₂ for industrial sectors at the national level, provincial level, and sectoral level by the shadow price theory. Our results show that six sectors (e.g., the Mining and Washing of Coal sector) should be covered in the Chinese pollution emission trading system. We have also found that the lowest SO₂ shadow price is 2000 Yuan/ton at the national level, and that shadow prices should be set differently at the provincial level. Our empirical study has several important policy implications, e.g., the estimated MACs may be used as a pricing benchmark through emission allowance allocation. In this paper, the MACs of industrial sectors are calculated from the national, provincial and sectoral levels; therefore, we provide an efficient framework to track the complex relationship between sectors and provinces.

  8. The value of international cooperation for abating global climate change

    International Nuclear Information System (INIS)

    Hammitt, James K.; Adams, John L.

    1996-01-01

    Because abatement of global climate change is a public good, independent national actions may not produce the efficient quantity. Using a numerical integrated-assessment model, abatement costs and damages induced by climate change are compared at the cooperative and noncooperative solutions to a set of two-party dynamic games between the industrialized and developing countries. Games with perfect and imperfect information about climate and economic factors are considered. Across 144 games with perfect information, incorporating different values of climate and economic parameters, the noncooperative solution usually yields global benefits comparable to those of the cooperative solution. In about one-fifth of these games, however, a second noncooperative solution exists which yields none of the benefits of the cooperative solution. In a game with imperfect information, where the state of nature is uncertain in the first but known in the second of two periods, the expected benefits of the noncooperative solution are 98% of the expected benefits of the cooperative solution. In contrast to single-agent studies which show little cost to delaying abatement, the benefits of cooperation are usually lost if cooperation is delayed 20 years

  9. Relative Greenhouse Gas Abatement Cost Competitiveness of Biofuels in Germany

    Directory of Open Access Journals (Sweden)

    Markus Millinger

    2018-03-01

    Full Text Available Transport biofuels derived from biogenic material are used for substituting fossil fuels, thereby abating greenhouse gas (GHG emissions. Numerous competing conversion options exist to produce biofuels, with differing GHG emissions and costs. In this paper, the analysis and modeling of the long-term development of GHG abatement and relative GHG abatement cost competitiveness between crop-based biofuels in Germany are carried out. Presently dominant conventional biofuels and advanced liquid biofuels were found not to be competitive compared to the substantially higher yielding options available: sugar beet-based ethanol for the short- to medium-term least-cost option and substitute natural gas (SNG for the medium to long term. The competitiveness of SNG was found to depend highly on the emissions development of the power mix. Silage maize-based biomethane was found competitive on a land area basis, but not on an energetic basis. Due to land limitations, as well as cost and GHG uncertainty, a stronger focus on the land use of crop-based biofuels should be laid out in policy.

  10. Estudo comparativo do efeito de solução de NaF a 0,5%, através de bochecho, escovação e ambos, na prevenção da cárie dental A comparative study of the effect of a 0.5% NaF solution, used in mouthwashing or toothbrushing or both, in the prevention of dental caries

    Directory of Open Access Journals (Sweden)

    Roberto Augusto Castellanos

    1983-12-01

    Full Text Available Foi realizado estudo a fim de comparar o efeito na redução do ataque de cárie de uma solução de fluoreto de sódio, na concentração de 0,5% aplicada sob a forma de bochecho, escovação, escovação e bochecho, uma vez por semana, sob supervisão, durante um período escolar de 10 meses em 424 escolares de 9 a 10 anos de idade matriculados em cinco escolas estaduais do Estado de São Paulo (Brasil. As crianças foram distribuídas igualmente em três grupos experimentais e um grupo controle, de acordo com a idade dental (nº de superfícies de dentes permanentes irrompidas e experiência anterior de cárie (CPO-S. Foram examinadas 307 crianças e os resultados mostraram que houve uma redução, estatisticamente significante ao nível de 0,05, de ataque de cárie entre os grupos experimentais e controle, da ordem de 35,19% para o grupo de bochecho (grupo I, de 37,91% para o grupo de escovação (grupo II, e de 49,77% para o grupo de escovação e bochecho (grupo IV. Quando comparados os grupos experimentais entre si não houve diferenças estatisticamente significantes ao nível de 0,05.A comparative study of the anticariogenic effect of sodium fluoride solution, with a concentration of 0.5%, applied weekly and under supervision, in mouthwashing and toothbrushing, used independently and in combination, was carried out on 424 children of 9 and 10 years of age from five public schools in S. Paulo, Brazil, over a period of 10 school months. The children were equally divided into three experimental groups and one control group according to the dental age (number of erupted permanent teeth surfaces and history of caries (DMF-S. Three hundred and seven children were examined at the end of the study and the results show a statistically significant decrease at the 0.05 level, between the experimental groups and control group, in the incidence of caries - 35.19% for the mouthwashing group (Group I; 37.91% for the toothbrushing group (Group II; and

  11. Antecedentes do Conflito Intragrupal: Um Estudo Comparativo

    OpenAIRE

    XAVIER, Tércio Antonio de Souza

    2002-01-01

    No campo do comportamento organizacional vem crescendo a importância dos grupos para as organizações, também têm crescido os problemas relacionados à motivação, à coordenação e aos conflitos. Nesse sentido, este estudo visa estudar e entender o conflito intragrupal em situações de trabalho e seus antecedentes na ótica dos funcionários. Buscam-se os prováveis determinantes das diferenças significativas nos graus de conflito de unidades organizacionais, a fim de subsidiar program...

  12. Estudio comparativo entre SIG propietario y SIG libre

    OpenAIRE

    Mesa Díaz, Juan Ramón

    2008-01-01

    Estudio comparativo entre SIG propietario y SIG libre, focalizado en los casos particulares de Geomedia Pro (SIG Propietario) y gvSIG (SIG Libre). En el estudio se procede a determinar cuáles son los aspectos destacables de un SIG, para poder evaluarlos, posteriormente, en los dos SIG objeto del estudio y obtener una ponderación definitoria de cada SIG. A continuación, algunos de los aspectos evaluados en cada SIG: interoperabilidad, conexión a bases de datos espaciales, aspectos económ...

  13. Recursos internos como diferenciais competitivos aplicados ao processo de adaptação estratégica em empresas do setor hoteleiro de Curitiba: estudo comparativo de casos

    OpenAIRE

    Teixeira, Rivanda Meira; Hocayen-da-Silva, Antônio João

    2010-01-01

    O setor hoteleiro de Curitiba, na segunda metade da década de 90, em função da instalação de montadoras e da transferência de diversas empresas multinacionais para a cidade, tornou-se atrativo para as redes hoteleiras nacionais e internacionais, uma vez que ocorreu aumento significativo na demanda pelos serviços de hospedagem. Buscou-se identificar, por meio de um estudo comparativo de casos, quais são os recursos internos que se destacam como diferenciais competitivos em empresas do se...

  14. Estudo comparativo entre blefaropeeling e laser fracionado de CO2 no tratamento do rejuvenescimento periorbital

    Directory of Open Access Journals (Sweden)

    Elisangela dos Santos Boeno

    2010-06-01

    Full Text Available Introdução: A queixa de rugas e flacidez na região periocular é freqüente.O blefaropeelingutilizando a fórmula de Baker-Gordon e a aplicação de laser fracionado ablativo de CO2 fracionado são consideradas opções efetivas para o tratamento dessa região. Objetivo: Comparar as técnicas, a recuperação e os resultados finais das duas modalidades terapêuticas. Material e Métodos: Estudo comparativo de hemi-faces em pacientes com dermatocálase e rítides moderadas. Realizou-se no lado direito blefaropeeling e, no esquerdo, laser fracionado de CO2, cujos resultados foram avaliados por fotografia, medidas do sulco palpebral superior e melhora clínica. Resultados: Foram incluídas 11 pacientes no protocolo.Verificou-se melhora clínica efotográfica com ambos os métodos. O tempo de recuperação foi maior com o peeling de fenol. As medidas do sulco palpebral superior não mostraram diferenças significativas. Conclusões: Ambas as modalidades terapêuticas são efetivas no tratamento do envelhecimento periorbital. O processo de recuperação o blefaropeeling foi mais demorado. Clinicamente a melhora da flacidez palpebral foi superior com o blefaropeeling.

  15. Analgesia pós-operatória em cirurgia ortopédica: estudo comparativo entre o bloqueio do plexo lombar por via perivascular inguinal (3 em 1 com ropivacaína e a analgesia subaracnóidea com morfina Analgesia pós-operatoria en cirugía ortopédica: estudio comparativo entre el bloqueo del plexo lombar por vía perivascular inguinal (3 en 1 con ropivacaína y la analgesia subaracnóidea con morfina Postoperative analgesia following orthopedic surgery: a study comparing perivascular lumbar plexus inguinal block with ropivacaine (3 in 1 and spinal anesthesia with morphine

    Directory of Open Access Journals (Sweden)

    Neuber Martins Fonseca

    2003-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: O bloqueio do plexo lombar pelo acesso perivascular inguinal, chamado de bloqueio 3 em 1, tem sido utilizado para analgesia pós-operatória. O objetivo deste estudo foi comparar a analgesia pós-operatória do bloqueio 3 em 1 a da morfina subaracnóidea em pacientes submetidos a cirurgias ortopédicas em membro inferior (MI. MÉTODO: Foram estudados 40 pacientes escalados para cirurgia ortopédica de MI, de ambos os sexos, estado físico ASA I e II, com idades entre 15 e 75 anos, distribuídos em 2 grupos (M e BPL. Foi realizada anestesia subaracnóidea em todos os pacientes, em L3-L4 ou L4-L5, com 20 mg de bupivacaína isobárica a 0,5%. No grupo M (n = 20 foi associado 50 µg de morfina ao anestésico local. No grupo BPL (n = 20 foi realizado o bloqueio 3 em 1 ao término da cirurgia, utilizando 200 mg de ropivacaína a 0,5%. Avaliou-se a analgesia e a intensidade da dor às 4, 8, 12, 14, 16, 20 e 24 horas após o término da cirurgia, o nível do bloqueio subaracnóideo, o tempo cirúrgico e as complicações. RESULTADOS: A duração da analgesia no grupo BPL foi de 13,1 ± 2,47, enquanto no grupo M todos os pacientes referiam dor e ausência de bloqueio motor no primeiro instante avaliado (4 horas. Houve falha do bloqueio de um dos 3 nervos em 3 pacientes. A incidência de náusea e prurido foi significativamente maior no grupo M. Quanto à retenção urinária, não houve diferença significante entre os grupos. Não houve depressão respiratória, hipotensão arterial ou bradicardia. A analgesia pós-operatória foi mais efetiva no grupo BPL, comparada ao grupo M às 4, 8, 12,14 e 16 horas. Às 20 e 24 horas não houve diferença significante entre os grupos. CONCLUSÕES: A analgesia pós-operatória proporcionada pelo bloqueio 3 em 1 apresentou efeitos colaterais inferiores à morfina subaracnóidea com tempo de analgesia semelhante.JUSTIFICATIVA Y OBJETIVOS: El bloqueo del plexo lumbar por el acceso

  16. On the cost-effective abatement of CO2-options taking consumer behaviour into account

    International Nuclear Information System (INIS)

    Wietschel, M.; Rentz, O.

    1995-01-01

    The current ecopolitical discussion focusses on the greenhouse effect and the consequent political aim to abate anthropogenic CO 2 emissions. Studies on individual measures for CO 2 abatement and on the development of efficient abatement strategies are already at hand. There is one aspect, however, that has hardly been dealt with as yet: If CO 2 abatement suceeds as it is planned by the Federal Government, then energy and prices will rise considerably, and this will curb the demand for energy. Any efficient abatement strategy must take this into account. The article presents a new concept for energy-emission models that takes consumer behaviour into account and discusses efficient CO 2 abatement strategies following from the application of such models. (orig.) [de

  17. Greenhouse gas abatement cost curves of the residential heating market. A microeconomic approach

    International Nuclear Information System (INIS)

    Dieckhoener, Caroline; Hecking, Harald

    2012-01-01

    In this paper, we develop a microeconomic approach to deduce greenhouse gas abatement cost curves of the residential heating sector. By accounting for household behavior, we find that welfare-based abatement costs are generally higher than pure technical equipment costs. Our results are based on a microsimulation of private households' investment decision for heating systems until 2030. The households' investment behavior in the simulation is derived from a discrete choice estimation which allows investigating the welfare costs of different abatement policies in terms of the compensating variation and the excess burden. We simulate greenhouse gas abatements and welfare costs of carbon taxes and subsidies on heating system investments until 2030 to deduce abatement curves. Given utility maximizing households, our results suggest a carbon tax to be the welfare efficient policy. Assuming behavioral misperceptions instead, a subsidy on investments might have lower marginal greenhouse gas abatement costs than a carbon tax.

  18. Climate modelling with endogenous technical change: Stochastic learning and optimal greenhouse gas abatement in the PAGE2002 model

    International Nuclear Information System (INIS)

    Alberth, Stephan; Hope, Chris

    2007-01-01

    This paper looks at the impact of ETC on the costs and benefits of different abatement strategies using a modified version of the PAGE2002 model. It was found that for most standard abatement paths there would be an initial 'learning investment' required that would substantially reduce the unit costs of CO 2 abatement as compared to a business as usual scenario. Furthermore, optimising an abatement program where ETC has been included leads to an increase in cost uncertainty during the period of widespread CO 2 abatements due to our lack of knowledge of the learning investments involved. Finally, the inclusion of ETC leads to a slightly deferred optimised abatement path followed by a rapid abatement program. Together, the results draw attention to the possibilities of 'uncovering uncertainty' through proactive abatements. 'Learning about learning' could become an important consideration for any plan to optimise future abatements

  19. Estudo comparativo da eficácia analgésica pós-operatória de 20, 30 ou 40 mL de ropivacaína no bloqueio de plexo braquial pela via posterior Estudio comparativo de la eficacia analgésica postoperatoria de 20, 30 o 40 mL de ropivacaína en el bloqueo de plexo braquial por la vía posterior A comparative study on the postoperative analgesic efficacy of 20, 30, or 40 mL of ropivacaine in posterior brachial plexus block

    Directory of Open Access Journals (Sweden)

    Marcos Guilherme Cunha Cruvinel

    2007-10-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: As intervenções cirúrgicas por via artroscópica no ombro estão relacionadas com a dor pós-operatória de grande intensidade. Dentre as técnicas de analgesia, o bloqueio do plexo braquial é a que oferece os melhores resultados. O objetivo deste estudo foi determinar qual volume de anestésico local no bloqueio de plexo braquial pela via posterior propicia analgesia pós-operatória para essas operações de maneira mais eficiente. MÉTODO: Noventa pacientes submetidos a bloqueio do plexo braquial pela via posterior foram divididos aleatoriamente em três grupos de 30. Grupo 1 - volume de 20 mL; Grupo 2 - volume de 30 mL; e Grupo 3 - volume de 40 mL. Em todos os grupos, o anestésico usado foi a ropivacaína a 0,375%. O bloqueio foi avaliado por meio da pesquisa de sensibilidade térmica utilizando-se algodão embebido em álcool e a dor pós-operatória foi avaliada seguindo-se uma escala numérica verbal (ENV nas primeiras 24 horas. RESULTADOS: Nos três grupos a analgesia pós-operatória foi similar segundo os parâmetros avaliados; ENV de dor média, tempo até a primeira queixa de dor e consumo de opióides no pós-operatório. No grupo de 20 mL houve um maior consumo de analgésicos não-opióides após a 12ª hora de pós-operatório. Nos grupos de 30 e 40 mL a extensão do bloqueio foi muito maior. CONCLUSÕES: Este estudo mostrou que o bloqueio do plexo braquial pela via posterior é uma técnica que promove analgesia eficaz para intervenções cirúrgicas no ombro. Os três diferentes volumes estudados promoveram analgesia similar. A maior extensão do bloqueio com volumes maiores não se traduziu em melhor analgesia.JUSTIFICATIVA Y OBJETIVOS: Las intervenciones quirúrgicas por vía artroscópica en hombro están relacionadas al dolor postoperatorio de gran intensidad. Entre las técnicas de analgesia, el bloqueo del plexo braquial es el que ofrece los mejores resultados. El objetivo de este estudio

  20. The public health relevance of air pollution abatement.

    Science.gov (United States)

    Künzli, N

    2002-07-01

    Assuming a causal relationship between current levels of air pollution and morbidity/mortality, it is crucial to estimate the public health relevance of the problem. The derivation of air pollution attributable cases faces inherent uncertainties and requires influential assumptions. Based on the results of the trinational impact assessment study of Austria, France, and Switzerland, where prudent estimates of the air pollution attributable cases (mortality, chronic bronchitis incidence, hospital admissions, acute bronchitis among children, restricted activity days, asthma attacks) have been made, influential uncertainties are quantified in this review. The public health impact of smoking, environmental tobacco smoke, and air pollution on the prevalence of chronic cough/phlegm are outlined. Despite all methodological caveats, impact assessment studies clearly suggest that public health largely benefits from better air quality. The studies are selective underestimates as they are strongly driven by mortality, but do not include full quantification of the impact on morbidity and their consequences on quality of life among the diseased and the caregivers. Air pollution abatement strategies are usually political in nature, targeting at polities, regulation and technology in mobile or stationary sources rather than at individuals. It is of note that key clean air strategies converge into abatement of climate change. In general, energy consumption is very closely related to both air pollution and greenhouse gases. The dominant causes of both problems are the excessive and inefficient combustion of fossil fuel. Thus, for many policy options, the benefit of air pollution abatement will go far beyond what prudent health-impact assessments may derive. From a climate change and air pollution perspective, improved energy efficiency and a strong and decisive departure from the "fossil fuel" combustion society is a science-based must. Health professionals must raise their voices

  1. Proyectos educativos: estudio comparativo entre Venezuela y Colombia

    Directory of Open Access Journals (Sweden)

    Mineira Finol

    2005-09-01

    Full Text Available El Proyecto Educativo Integral Comunitario (PEIC y el Proyecto Educativo Institucional constituyen la categoría de comparación entre Venezuela y Colombia; a tal fin, este estudio de tipo comparativo-documental se centró en determinar congruencias y discrepancias entre PEIC y PEI, utilizando el método comparativo estructurado en cuatro fases: descripción, interpretación, yuxtaposición y comparación, propuesto por Hilker y Bereday (1972 Entre los resultados se tienen: congruencias en cuanto surgen sobre las bases de diagnóstico externos efectuados por organismos internacionales UNESCO, CEPAL ante la inefectividad y baja productividad de ambos países; a nivel interno responden a políticas educativas reformadoras de currículum y leyes,. Discrepancias referidas al tiempo de implementación; en Venezuela a partir de 1996; Colombia en 1992; este último, consolidó las bases para la participación a través del gobierno escolar y de un sistema de evaluación institucional, muy incipiente en Venezuela.

  2. Nuclear Power Generation and CO2 Abatement Scenarios in Taiwan

    OpenAIRE

    Chang-Bin Huang; Fu-Kuang Ko

    2009-01-01

    Taiwan was the first country in Asia to announce "Nuclear-Free Homeland" in 2002. In 2008, the new government released the Sustainable Energy Policy Guidelines to lower the nationwide CO2 emissions some time between 2016 and 2020 back to the level of year 2008, further abatement of CO2 emissions is planed in year 2025 when CO2 emissions will decrease to the level of year 2000. Besides, under consideration of the issues of energy, environment and economics (3E), the new go...

  3. Anestesia peridural para cesariana: estudo comparativo entre Bupivacaína Racêmica (S50-R50 e Bupivacaína com excesso enantiomérico de 50% (S75-R25 a 0,5% associadas ao Sufentanil Anestesia epidural para cesárea: estudio comparativo entre Bupivacaína Racémica (S50-R50 y Bupivacaína con exceso enantiomérico de 50% (S75-R25 a 0,5% asociadas al Sufentanil Epidural block for cesarean section: a comparative study between 0.5% racemic Bupivacaine (S50-R50 and 0.5% enantiomeric excess Bupivacaine (S75-R25 associated with Sufentanil

    Directory of Open Access Journals (Sweden)

    Angélica de Fátima de Assunção Braga

    2009-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A bupivacaína racêmica a 0,5% associada a opioides por via peridural constitui técnica anestésica utilizada em cesariana, entretanto sua toxicidade é questionada. A bupivacaína com excesso enantiomérico de 50% apresenta menor cárdio e neurotoxicidade. Avaliou-se a eficácia da bupivacaína racêmica e da bupivacaína com excesso enantiomérico de 50% a 0,5%, associadas ao sufentanil, por via peridural, em gestantes submetidas à cesariana. MÉTODO: Cinquenta gestantes a termo, submetidas à cesariana eletiva, sob bloqueio peridural, distribuídas em dois grupos, de acordo com o anestésico local empregado: Grupo I - bupivacaína racêmica a 0,5% com vasoconstritor; Grupo II - bupivacaína com excesso enantiomérico de 50% (S75-R25 a 0,5% com vasoconstritor. Nos dois grupos o anestésico local (100 mg foi associado ao sufentanil (20 µg e o volume total empregado da solução foi de 24 mL. Avaliaram-se: latência do bloqueio sensitivo; nível máximo do bloqueio sensitivo; grau do bloqueio motor; tempo para regressão do bloqueio motor; duração da analgesia; efeitos colaterais maternos e repercussões neonatais. RESULTADOS: A latência, o nível máximo do bloqueio sensitivo, o grau do bloqueio motor e a duração da analgesia foram semelhantes nos dois grupos; o tempo para regressão do bloqueio motor foi significativamente menor no Grupo II. Os efeitos colaterais ocorreram com frequência semelhante em ambos os grupos. Ausência de alterações cardiocirculatórias maternas e repercussões neonatais. CONCLUSÕES: A bupivacaína racêmica e a bupivacaína com excesso enantiomérico de 50%, por via peridural, proporcionam anestesia adequada para realização de cesariana. A bupivacaína com excesso enantiomérico de 50% constitui alternativa promissora para esse tipo de procedimento, por apresentar menor tempo para regressão do bloqueio motor, desejável na paciente obstétrica.JUSTIFICATIVA Y OBJETIVOS: La

  4. Regional differences in China's CO2 abatement cost

    International Nuclear Information System (INIS)

    He, Xiaoping

    2015-01-01

    Under a framework of output distance function with multiple outputs, the study discusses the carbon abatement cost at provincial and regional levels in China, using the shadow price analysis. The findings show that the abatement cost, reflecting the marginal opportunity cost of carbon reduction, varies greatly among the provinces. On average, the abatement cost of the eastern region was much higher than that of the mid-western region during the observed period. The findings provide evidence that the carbon prices in the current ETS pilots have been much lower than desired levels, implying inefficiency of the markets. The wide range of the abatement cost estimates supports that the equi-marginal principle does not hold for the regulations on carbon pollution at regional levels. The regional cost differences indicate the huge potential for China to minimize the total abatement cost with policy instruments that may motive the emissions moving from areas of low abatement cost to where the abatement cost is higher. For a few undeveloped provinces that are environmentally fragile and have high abatement cost, supplementary measures will be needed to reduce the negative impact of carbon cutbacks on the poor to the minimum. - Highlights: • The marginal abatement cost of CO 2 is defined by the shadow price measure. • A linear programming model based on distance function is established. • Marginal abatement costs at provincial level are empirical investigated. • The abatement cost varies across provinces and regions in China. • The findings provide evidence that the current ETS pilots are inefficient

  5. Abatement costs of post-Kyoto climate regimes

    International Nuclear Information System (INIS)

    Elzen, Michel den; Lucas, Paul; Vuuren, Detlef van

    2005-01-01

    This article analyses the abatement costs of three post-Kyoto regimes for differentiating commitments compatible with stabilising atmospheric greenhouse gases concentrations at 550 ppmv CO 2 equivalent in 2100. The three regimes explored are: (1) the Multi-Stage approach assumes a gradual increase in the number of Parties involved who are adopting either emission intensity or reductions targets; (2) the Brazilian Proposal approach, i.e. the allocation or reductions based on countries' contribution to temperature increase; (3) Contraction and Convergence, with full participation in convergence of per capita emission allowances. In 2050, the global costs increase up to about 1% of the world GDP, ranging from 0.5% to 1.5%, depending on baseline scenario and marginal abatement costs. Four groups of regions can be identified on the basis of similar costs (expressed as the percentage of GDP). These are: (1) OECD regions with average costs; (2) FSU, the Middle East and Latin America with high costs; (3) South-East Asia and East Asia (incl. China) with low costs; and (4) South Asia (incl. India) and Africa with net gains from emissions trading for most regimes. The Brazilian Proposal approach gives the highest costs for groups 1 and 2. The distribution of costs for the Contraction and Convergence approach highly depends on the convergence year. The Multi-Stage approach and Contraction and Convergence (convergence year 2050) seem to result in relatively the most even distribution of costs amongst all Parties

  6. Hanford Tank Farm Vapors Abatement Technology and Vendor Proposals Assessment

    International Nuclear Information System (INIS)

    Burns, H. H.; Farrar, M. E.; Fink, S. D.

    2016-01-01

    Suspected chemical vapor releases from the Hanford nuclear waste tank system pose concerns for worker exposure. Washington River Protection Solutions (WRPS) contracted the Savannah River National Laboratory (SRNL) to explore abatement technologies and strategies to remediate the vapors emitted through the ventilation system. In response, SRNL conducted an evaluation of technologies to abate, or reduce, vapor emissions to below 10% of the recognized occupational exposure limits (OELs). The evaluation included a review of published literature and a broadly communicated Request for Information to commercial vendors through a Federal Business Opportunities (Fed Biz Opps) web posting. In addition, SRNL conducted a workshop and post-workshop conference calls with interested suppliers (vendors) to assess proposals of relevant technologies. This report reviews applicable technologies and summarizes the approaches proposed by the vendors who participated in the workshop and teleconference interviews. In addition, the report evaluates the estimated performance of the individual technologies for the various classes of chemical compounds present in the Hanford Chemicals of Potential Concern (COPCs) list. Similarly, the report provides a relative evaluation of the vendor proposed approaches against criteria of: technical feasibility (and maturity), design features, operational considerations, secondary waste generation, safety/regulatory, and cost / schedule. These rough order-of-magnitude (ROM) cost estimates are intended to provide a comparison basis between technologies and are not intended to be actual project estimates.

  7. Tradeable emission permit in Dutch acidification abatement policy

    Energy Technology Data Exchange (ETDEWEB)

    Ruyssenaars, P; Sliggers, J [Ministry of Environment (Netherlands)

    1996-12-31

    Target groups as well as the government are under the spell of economic instruments as part of environmental policy. Under this heading fall (regulatory) taxes and tradeable emission permits (VER). Of the two, VER, particularly, receive a lot of attention. From the target groups, because the flexibility of VER means working cost-effectively, which could lead to cost savings. From the government, because it can have more faith in the viability of emission ceilings, and has less need to pass detailed legislation. The latter conforms nicely to the philosophy `government at arm`s length`. The Ministry of Environment has had a study made on the feasibility of VER in the context of the acidification abatement policy in the Netherlands. The development and implementation of policy concerning acidification abatement is at an advanced stage, with deposition targets already set for 2000 and 2010 (2400 and 1400 acid equivalents/ha/year, respectively, averaged for afforested areas). From these, also emission reduction targets per target group are deduced, which can be used in a VER system. The main starting point of the study was to gain more insight into the practical aspects of VER. One important question is what form a VER system for the Netherlands should have to take. Also, an investigation was made into the activities which are necessary to introduce a VER system as well as the time, manpower and money these activities entail

  8. Tradeable emission permit in Dutch acidification abatement policy

    Energy Technology Data Exchange (ETDEWEB)

    Ruyssenaars, P.; Sliggers, J. [Ministry of Environment (Netherlands)

    1995-12-31

    Target groups as well as the government are under the spell of economic instruments as part of environmental policy. Under this heading fall (regulatory) taxes and tradeable emission permits (VER). Of the two, VER, particularly, receive a lot of attention. From the target groups, because the flexibility of VER means working cost-effectively, which could lead to cost savings. From the government, because it can have more faith in the viability of emission ceilings, and has less need to pass detailed legislation. The latter conforms nicely to the philosophy `government at arm`s length`. The Ministry of Environment has had a study made on the feasibility of VER in the context of the acidification abatement policy in the Netherlands. The development and implementation of policy concerning acidification abatement is at an advanced stage, with deposition targets already set for 2000 and 2010 (2400 and 1400 acid equivalents/ha/year, respectively, averaged for afforested areas). From these, also emission reduction targets per target group are deduced, which can be used in a VER system. The main starting point of the study was to gain more insight into the practical aspects of VER. One important question is what form a VER system for the Netherlands should have to take. Also, an investigation was made into the activities which are necessary to introduce a VER system as well as the time, manpower and money these activities entail

  9. Hanford Tank Farm Vapors Abatement Technology and Vendor Proposals Assessment

    Energy Technology Data Exchange (ETDEWEB)

    Burns, H. H. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Farrar, M. E. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL); Fink, S. D. [Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

    2016-09-20

    Suspected chemical vapor releases from the Hanford nuclear waste tank system pose concerns for worker exposure. Washington River Protection Solutions (WRPS) contracted the Savannah River National Laboratory (SRNL) to explore abatement technologies and strategies to remediate the vapors emitted through the ventilation system. In response, SRNL conducted an evaluation of technologies to abate, or reduce, vapor emissions to below 10% of the recognized occupational exposure limits (OELs). The evaluation included a review of published literature and a broadly communicated Request for Information to commercial vendors through a Federal Business Opportunities (Fed Biz Opps) web posting. In addition, SRNL conducted a workshop and post-workshop conference calls with interested suppliers (vendors) to assess proposals of relevant technologies. This report reviews applicable technologies and summarizes the approaches proposed by the vendors who participated in the workshop and teleconference interviews. In addition, the report evaluates the estimated performance of the individual technologies for the various classes of chemical compounds present in the Hanford Chemicals of Potential Concern (COPCs) list. Similarly, the report provides a relative evaluation of the vendor proposed approaches against criteria of: technical feasibility (and maturity), design features, operational considerations, secondary waste generation, safety/regulatory, and cost / schedule. These rough order-of-magnitude (ROM) cost estimates are intended to provide a comparison basis between technologies and are not intended to be actual project estimates.

  10. Estudo comparativo das alterações histológicas imediatas causadas pelo uso do laser de CO2 e do laser de erbium na pele de ratos wistar Comparative study of histopathological abnormalities induced by CO2 and erbium laser on the skin of wistar rats

    Directory of Open Access Journals (Sweden)

    Lúcia de Noronha

    2001-01-01

    Full Text Available O presente estudo tem como objetivo analisar, do ponto de vista anatomopatológico, os efeitos térmicos encontrados na pele de ratos wistar após a aplicação do laser de CO2 e do laser erbium. Utilizaram-se oito ratos submetidos a tricotomia em toda a região toracodorsal. Selecionaram-se duas áreas separadas, as quais receberam a aplicação do laser. Na primeira foram realizadas duas passadas do laser de CO2 e na segunda, duas passadas do laser erbium. A área-controle correspondeu àquela imediatamente adjacente à área submetida ao laser. A análise microscópica da lesão causada pelo laser de CO2 revela lesão em forma de U, com ablação completa da epiderme em toda a sua extensão. A derme superficial apresenta degeneração do colágeno, correspondendo ao dano térmico residual, e a transição deste para a derme normal é bem demarcada. Na pele lesada com laser erbium observa-se também extensa área de pele lesada em forma de platô, com algumas pequenas áreas de pele não-lesada. Pode-se observar, ainda, dano do colágeno na derme superficial, porém mais discreto que aquele causado pelo CO2.The aim of this paper is to analyses the histopathology of the termal effects on the skin of Wistar rats after the application of CO2 and erbium laser. Eight rats had their flanks shaved and two areas were selected for the use of the laser. The first area received two applications of CO2 laser, and the second area two applications of the erbium laser. The skin adjacent to the laser application site was used as a control area. The microscopic analysis of the injury caused by CO2 laser revealed a complete ablation of epidermis and an injury that looked like an "U" in shape. The superficial dermis presented a degeneration of the collagen that corresponded to the residual thermal injury, to normal dermis was sharply demarcated. The injury caused by erbium laser was observed as a plateau injured area with a few small normal areas. The collagen

  11. Adolescents Exiting Homelessness over Two Years: The Risk Amplification and Abatement Model

    Science.gov (United States)

    Milburn, Norweeta G.; Rice, Eric; Rotheram-Borus, Mary Jane; Mallett, Shelley; Rosenthal, Doreen; Batterham, Phillip; May, Susanne J.; Witkin, Andrea; Duan, Naihua

    2009-01-01

    The Risk Amplification and Abatement Model (RAAM) demonstrates that negative contact with socializing agents amplify risk, while positive contact abates risk for homeless adolescents. To test this model, the likelihood of exiting homelessness and returning to familial housing at 2 years and stably exiting over time are examined with longitudinal…

  12. 75 FR 39820 - Procedures for Abatement of Highway Traffic Noise and Construction Noise

    Science.gov (United States)

    2010-07-13

    ...-2008-0114] RIN 2125-AF26 Procedures for Abatement of Highway Traffic Noise and Construction Noise... the Federal regulations on the Procedures for Abatement of Highway Traffic Noise and Construction Noise. The final rule clarifies and adds definitions, the applicability of this regulation, certain...

  13. Marginal Abatement Cost of CO2 in China Based on Directional Distance Function: An Industry Perspective

    Directory of Open Access Journals (Sweden)

    Bowen Xiao

    2017-01-01

    Full Text Available Industrial sectors account for around 70% of the total energy-related CO2 emissions in China. It is of great importance to measure the potential for CO2 emissions reduction and calculate the carbon price in industrial sectors covered in the Emissions Trading Scheme and carbon tax. This paper employs the directional distance function to calculate the marginal abatement costs of CO2 emissions during 2005–2011 and makes a comparative analysis between our study and the relevant literature. Our empirical results show that the marginal abatement costs vary greatly from industry to industry: high marginal abatement costs occur in industries with low carbon intensity, and vice versa. In the application of the marginal abatement cost, the abatement distribution scheme with minimum cost is established under different abatement targets. The conclusions of abatement distribution scheme indicate that those heavy industries with low MACs and high carbon intensity should take more responsibility for emissions reduction and vice versa. Finally, the policy implications for marginal abatement cost are provided.

  14. Emissions leakage and subsidies for pollution abatement. Pay the polluter or the supplier of the remedy?

    Energy Technology Data Exchange (ETDEWEB)

    Fischer, Carolyn; Greaker, Mads; Rosendahl, Knut Einar

    2012-07-01

    Asymmetric regulation of a global pollutant between countries can alter the competitiveness of industries and lead to emissions leakage. For most types of pollution, abatement technologies are available for firms to produce with lower emissions. However, the suppliers of those technologies tend to be less than perfectly competitive, particularly when both emissions regulations and advanced technologies are new. In this context of twin market failures, we consider the relative effects and desirability of subsidies for abatement technology. We find a more robust recommendation for upstream subsidies than for downstream subsidies. Downstream subsidies tend to increase global abatement technology prices, reduce pollution abatement abroad and increase emission leakage. On the contrary, upstream subsidies reduce abatement technology prices, and hence also emissions leakage.(Author)

  15. CO2 emissions abatement and geologic sequestration - industrial innovations and stakes - status of researches in progress

    International Nuclear Information System (INIS)

    2005-01-01

    This colloquium was jointly organized by the French institute of petroleum (IFP), the French agency of environmental and energy mastery (Ademe) and the geological and mining research office (BRGM). This press kit makes a status of the advances made in CO 2 emissions abatement and geological sequestration: technological advances of CO 2 capture and sequestration, geological reservoir dimensioning with respect to the problem scale, duration of such an interim solution, CO 2 emissions abatement potentialities of geological sequestration, regulatory, economical and financial implications, international stakes of greenhouse gas emissions. This press kit comprises a press release about the IFP-Ademe-BRGM colloquium, a slide presentation about CO 2 abatement and sequestration, and four papers: a joint IFP-Ademe-BRGM press conference, IFP's answers to CO 2 emissions abatement, Ademe's actions in CO 2 abatement and sequestration, and BRGM's experience in CO 2 sequestration and climatic change expertise. (J.S.)

  16. Estudo comparativo entre bupivacaína racêmica a 0,25% e bupivacaína com excesso enantiomérico de 50% (S75-R25 a 0,25%, associadas ao fentanil para analgesia de parto com deambulação da parturiente Estudio comparativo entre bupivacaína racémica a 0,25% y bupivacaína con exceso enantiomérico de 50% (S75-R25 a 0,25% asociadas con fentanil para analgesia de parto con deambulación de la gestante Racemic 0.25% bupivacaine and 50% enantiomeric excess (S75-R25 0.25% bupivacaine associated to fentanyl for labor analgesia with patient’s ambulation. Comparative study

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Figueiredo Côrtes

    2006-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Estudos clínicos com enantiômeros levógiros dos anestésicos locais demonstraram maior segurança em função de menor cardiotoxicidade. A deambulação da parturiente durante o trabalho de parto pode abreviar o trabalho de parto. Este estudo visou comparar a qualidade da anestesia e as repercussões maternas e fetais bem como a capacidade de deambulação e micção espontânea das parturientes com o emprego da bupivacaína a 0,25% e da bupivacaína com excesso enantiomérico de 50% (S75-R25 a 0,25%, associadas ao fentanil por via peridural contínua, no trabalho de parto. MÉTODO: Foram avaliadas 40 parturientes, estado físico ASA I e II, feto único, em trabalho de parto, submetidas a analgesia peridural contínua e divididas em dois grupos: no grupo I, receberam 8 mL (20 mg de bupivacaína (S75-R25 a 0,25% com epinefrina, associados a 100 µg de fentanil. No grupo II, receberam 8 mL (20 mg de bupivacaína racêmica a 0,25% com epinefrina, associados a 100 µg de fentanil. Foram avaliados os seguintes parâmetros: tempo de latência, nível de bloqueio sensitivo, grau de bloqueio motor, teste de Romberg, capacidade de deambulação e micção espontânea, duração do trabalho de parto e do período expulsivo, alterações hemodinâmicas e respiratórias maternas além da vitalidade dos recém-nascidos. RESULTADOS: Não houve diferença estatística significativa entre os grupos nos parâmetros avaliados. Todas as parturientes apresentaram força muscular com capacidade de deambulação, salvo no caso de indicação de cesariana (um caso do grupo II ou quando o parto aconteceu antes do tempo previsto para avaliação deste parâmetro (quatro casos do grupo I e cinco casos do grupo II. CONCLUSÕES: Tanto a bupivacaína racêmica quanto a bupivacaína (S75-R25 a 0,25% associadas ao fentanil mostraram ser boa opção para analgesia de parto.JUSTIFICATIVA Y OBJETIVOS: Estudios clínicos con enantiómeros lev

  17. Comparative study between the effects of hyaluronic acid and acid galactan purified from eggs of the mollusk Pomacea sp in wound healing Estudo comparativo entre os efeitos do ácido hialurônico e do galactano acídico purificado dos ovos do molusco Pomacea sp na cicatrização de feridas

    Directory of Open Access Journals (Sweden)

    Ana Katarina Menezes da Cruz

    2004-01-01

    Full Text Available PURPOSE: To compare the effect of hyaluronic acid (HA and of AG on the healing of intestine wounds. METHODS: The semi-purified extract of the eggs of the mollusc was obtained by fractionation with ammonium sulfate and purification for ion-exchange chromatography. The obtained galactans were eluted in water (neutral galactan and in 0.1 and 0.2M NaCl (acidic galactans. The in vivo study was performed with 45 "Wistar" rats, separated in three groups (n=15. Solutions containing HA 1%, GA 1% or saline solution 0,9%, was placed topically on the sutures of wounds in the small intestine of the rats. After 05, 10 and 21 days the animals were sacrificed and biopsy of the healing tissue was done. RESULTS: The hystologic grading was more significant for HA and AG groups when compared to the group C. AG stimulated the appearance of macrophages, giant cells and increase in the concentration of collagen in the area of the wound when compared to HA. CONCLUSION: The topical use of GA in intestinal wounds promoted the anticipation of events that are important in the wound healing.OBJETIVO: Comparar o efeito de ácido hialurônico (AH e do GA na cicatrização de feridas intestinais. MÉTODOS: O extrato semipurificado dos ovos do molusco foi obtido por fracionamento com sulfato de amônio e purificação por cromatografia de troca-iônica. Os galactanos obtidos foram eluídos em água (galactano neutro e em 0.1 e 0.2M NaCl (galactanos acídicos. O estudo em vivo foi executado com 45 ratos Wistar, separados em três grupos (n=15. Soluções contendo AH 1%, GA 1% ou solução salina 0,9%, foram aplicadas topicamente nas suturas das feridas longitudinais localizadas no intestino delgado dos ratos. Depois de 05, 10 e 21 dias os animais foram sacrificados e biópsias dos tecidos cicatrizados foram realizadas. RESULTADOS: A graduação histológica foi mais significante para os grupos do AH e GA quando comparado ao grupo C. O GA estimulou o aparecimento de macr

  18. Influência do estresse causado pelo transporte e método de abate sobre o rigor mortis do tambaqui (Colossoma macropomum

    Directory of Open Access Journals (Sweden)

    Joana Maia Mendes

    2015-06-01

    Full Text Available ResumoO presente trabalho avaliou a influência do estresse pré-abate e do método de abate sobre o rigor mortis do tambaqui durante armazenamento em gelo. Foram estudadas respostas fisiológicas do tambaqui ao estresse durante o pré-abate, que foi dividido em quatro etapas: despesca, transporte, recuperação por 24 h e por 48 h. Ao final de cada etapa, os peixes foram amostrados para caracterização do estresse pré-abate por meio de análises dos parâmetros plasmáticos de glicose, lactato e amônia e, em seguida, os peixes foram abatidos por hipotermia ou por asfixia com gás carbônico para o estudo do rigor mortis. Verificou-se que o estado fisiológico de estresse dos peixes foi mais agudo logo após o transporte, implicando numa entrada em rigor mortis mais rápida: 60 minutos para tambaquis abatidos por hipotermia e 120 minutos para tambaquis abatidos por asfixia com gás carbônico. Nos viveiros, os peixes abatidos logo após a despesca apresentaram estado de estresse intermediário, sem diferença no tempo de entrada em rigor mortis em relação ao método de abate (135 minutos. Os peixes que passaram por recuperação ao estresse causado pelo transporte em condições simuladas de indústria apresentaram entrada em rigor mortis mais tardia: 225 minutos (com 24 h de recuperação e 255 minutos (com 48 h de recuperação, igualmente sem diferença em relação aos métodos de abate testados. A resolução do rigor mortis foi mais rápida nos peixes abatidos após o transporte, que foi de 12 dias. Nos peixes abatidos logo após a despesca, a resolução ocorreu com 16 dias e, nos peixes abatidos após recuperação, com 20 dias para 24 h de recuperação ao estresse pré-abate e 24 dias para 48 h de recuperação, sem influência do método de abate na resolução do rigor mortis. Assim, é desejável que o abate do tambaqui destinado à indústria seja feito após período de recuperação ao estresse, com vistas a aumentar sua

  19. Abatement of toluene from gas streams via ferro-electric packed bed dielectric barrier discharge plasma.

    Science.gov (United States)

    Liang, Wenjun; Li, Jian; Li, Jie; Jin, Yuquan

    2009-10-30

    Destruction of gaseous toluene via ferro-electric packed bed dielectric barrier discharge plasma in a coaxial cylindrical reactor was carried out at atmospheric pressure and room temperature. The difference among three kinds of reactors was compared in terms of specific energy density (SED), energy yield (EY), toluene decomposition. In order to optimize the geometry of the reactor, the removal efficiency of toluene was compared for various inner electrode diameters. In addition, qualitative analysis on by-products and particular discussion on toluene abatement mechanisms were also presented. It has been found that ferro-electric packed bed DBD reactor could effectively decompose toluene. Toluene removal efficiency enhanced with increasing SED. With respect to toluene conversion, 1.62 mm electrode appeared to be superior to 1.06 mm electrodes. BaTiO3 reactor had the highest toluene removal efficiency among the reactors. For NaNO2 reactor, the highest EY could reach 17.0 mg/kWh to a certain extent.

  20. Abatement of toluene from gas streams via ferro-electric packed bed dielectric barrier discharge plasma

    International Nuclear Information System (INIS)

    Liang Wenjun; Li Jian; Li Jie; Jin Yuquan

    2009-01-01

    Destruction of gaseous toluene via ferro-electric packed bed dielectric barrier discharge plasma in a coaxial cylindrical reactor was carried out at atmospheric pressure and room temperature. The difference among three kinds of reactors was compared in terms of specific energy density (SED), energy yield (EY), toluene decomposition. In order to optimize the geometry of the reactor, the removal efficiency of toluene was compared for various inner electrode diameters. In addition, qualitative analysis on by-products and particular discussion on toluene abatement mechanisms were also presented. It has been found that ferro-electric packed bed DBD reactor could effectively decompose toluene. Toluene removal efficiency enhanced with increasing SED. With respect to toluene conversion, 1.62 mm electrode appeared to be superior to 1.06 mm electrodes. BaTiO 3 reactor had the highest toluene removal efficiency among the reactors. For NaNO 2 reactor, the highest EY could reach 17.0 mg/kWh to a certain extent.

  1. Regional and sectoral marginal abatement cost curves for NOx incorporating controls, renewable electricity, energy efficiency and fuel switching

    Science.gov (United States)

    A marginal abatement cost curve (MACC) traces out the relationship between the quantity of pollution abated and the marginal cost of abating each additional unit. In the context of air quality management, MACCs typically are developed by sorting end-of-pipe controls by their resp...

  2. On the fair division of greenhouse gas abatement cost

    Energy Technology Data Exchange (ETDEWEB)

    Boehringer, Christoph [University of Oldenburg, Department of Economics, Ammerlaender Heerstrasse 114-118, D-26111 Oldenburg (Germany); Centre for European Economic Research (ZEW), Mannheim (Germany); Helm, Carsten [Darmstadt University of Technology, Department of Law and Economics, Marktplatz 15, D-64283 Darmstadt (Germany)

    2008-05-15

    This paper introduces a solution for the fair division of emission reduction costs in the climate change regime. Our primary focus is on the fair division of efficiency gains that arise from exchanging the initial allocation of emission entitlements, rather than the initial allocation itself. We propose to complement the competitive Walrasian solution with welfare bounds, the ethical justification of which rests on commonality of ownership. Simulations with an intertemporal computable general equilibrium model illustrate the relevance of such welfare bounds. For a wide range of initial allocations of emission entitlements - including an equal per capita allocation - we find that developing countries should be fully compensated for their emission abatement efforts, but should not receive any further transfers. (author)

  3. NOx Abatement Pilot Plant 90-day test results report

    International Nuclear Information System (INIS)

    McCray, J.A.; Boardman, R.D.

    1991-01-01

    High-level radioactive liquid wastes produced during nuclear fuel reprocessing at the Idaho Chemical Processing Plant are calcined in the New Waste Calcining Facility (NWCF) to provide both volume reduction and a more stable waste form. Because a large component of the HLW is nitric acid, high levels of oxides of nitrogen (NO x ) are produced in the process and discharged to the environment via the calciner off-gas. The NO x abatement program is required by the new Fuel Processing Restoration (FPR) project permit to construct to reduce NO x emissions from the NWCF. Extensive research and development has indicated that the selective catalytic reduction (SCR) process is the most promising technology for treating the NWCF off-gas. Pilot plant tests were performed to determine the compatibility of the SCR process with actual NWCF off-gas. Test results indicate that the SCR process is a viable method for abating the NO x from the NWCF off-gas. Reduction efficiencies over 95% can be obtained, with minimal amounts of ammonia slip, provided favorable operating conditions exist. Two reactors operated with series flow will provide optimum reduction capabilities. Typical operation should be performed with a first reactor stage gas space velocity of 20,000 hr -1 and an inlet temperature of 320 degrees C. The first stage exhaust NO x concentration will then dictate the parameter settings for the second stage. Operation should always strive for a peak reactor temperature of 520 degrees C in both reactors, with minimal NH 3 slip from the second reactor. Frequent fluctuations in the NWCF off-gas NO x concentration will require a full-scale reduction facility that is versatile and quick-responding. Sudden changes in NWCF off-gas NO x concentrations will require quick detection and immediate response to avoid reactor bed over-heating and/or excessive ammonia slip

  4. Estudo comparativo entre as tenólises convencionais e com despertar intraoperatório realizadas na região do túnel osteofibroso flexor das mãos (zona 2 Comparative study between traditional tenolyses and with intraoperative awakening performed on the flexor osteofibrous tunnel region of the hands (zone 2

    Directory of Open Access Journals (Sweden)

    Tiago Guedes da Motta Mattar

    2009-01-01

    Full Text Available OBJETIVO: As tenólises dos tendões flexores na zona 2 são procedimentos difíceis e um verdadeiro desafio na cirurgia da mão. Com o objetivo de comparar os resultados obtidos entre as tenólises com despertar intraoperatório, realizadas sob anestesia locorregional (grupo 1, daqueles obtidos com as tenólises convencionais, realizadas sob anestesia geral ou bloqueio total do plexo braquial (grupo 2, os autores realizam um estudo prospectivo e controlado. MÉTODOS: Foram avaliados 22 pacientes com 39 dedos portadores de lesão de tendão flexor na zona 2 que evoluíram para aderências. Todos os pacientes foram operados após três meses e antes de um ano da sutura tendinosa primária. Todos apresentavam limitação da movimentação ativa sem melhora com a reabilitação. Os grupos 1 e 2 mostraram-se homogêneos em relação à idade dos pacientes, sexo, comprometimento pré-operatório e ausência de lesões ou patologias associadas. Todos os pacientes foram avaliados de acordo com a movimentação ativa (TAMs no período pré-operatório e com seis meses de pós-operatório. RESULTADOS: A análise estatística dos dados obtidos nos grupos 1 e 2 demonstra que as tenólises realizadas pelas duas técnicas proporcionam bons resultados. Ao comparar os resultados da movimentação ativa total após seis meses da tenólise, observa-se que os pacientes do grupo 1, tratados pela técnica do despertar intraoperatório, apresentavam melhores resultados. CONCLUSÕES: As tenólises dos flexores na zona 2 proporcionam bons resultados em termos de ganho de amplitude articular. A técnica de despertar intraoperatório com anestesia locorregional proporciona resultados mais satisfatórios que a técnica convencional.OBJECTIVE: Flexor tendon tenolysis on zone 2 is a difficult and really challenging for hand surgery. With the objective of comparing the results obtained between tenolyses with intraoperative awakening, performed with locoregional anesthesia

  5. A organização do trabalho na pedagogia diferenciada ao nível do 1º Ciclo do Ensino Básico : um estudo comparativo entre os modelos pedagógicos High/Scope e do Movimento da Escola Moderna

    OpenAIRE

    Gomes, Mário Henrique de Jesus

    2014-01-01

    Tese de Doutoramento em Educação na especialidade de Desenvolvimento Curricular apresentada à Universidade Aberta Portugal subscreveu o programa da U.E. «Quadro Estratégico de Cooperação Europeia em matéria de Educação e Formação» (EF2020), que estabeleceu objetivos para os sistemas educativos europeus, no horizonte de 2020. Neste quadro, o Ministério da Educação português publicou o intermédio Programa Educação 2015, que tem como principal objetivo “elevar as competências básicas dos alun...

  6. Etnobotânica nordestina: estudo comparativo da relação entre comunidades e vegetação na Zona do Litoral - Mata do Estado de Pernambuco, Brasil Northeast Ethnobotany: links between communities and vegetation of the Coast Zone of the Mata Region in Pernambuco State, Brazil

    Directory of Open Access Journals (Sweden)

    Alberto Jorge da Rocha Silva

    2005-03-01

    Full Text Available O trabalho visa determinar as relações entre comunidades e vegetação na Zona da Mata de Pernambuco. A comunidade da Usina São José (Igarassu - Ig é formada por vilas rurais, vizinhas da Reserva Ecológica da Mata da Usina São José. Jaguarana (Paulista-Pa é uma comunidade urbana, próxima à Reserva Ecológica da Mata de Jaguarana. Levantou-se as plantas úteis para estas comunidades por meio de 38 entrevistas não-estruturadas, enquadrando-as nas categorias de uso alimentação, comércio, construção, mágico, medicinal, tecnológico e outros. Foram registradas 334 espécies, nativas e cultivadas. Comparou-se as comunidades, através do Quociente de Similaridade de Sørensen (Qs, obtendo-se maiores índices para plantas alimentícias (QsIgPa= 0,71, predominantemente cultivadas, e medicinais (QsIgPa= 0,56, 45,1% delas nativas, predominantemente herbáceas. A vegetação nativa constitui uma fonte importante de recursos medicinais mas é subutilizada como fonte de alimento e tem pouca relevância na visão cosmológica das comunidades. Os vegetais não têm relevância na atividade de comércio, servindo como complemento de renda para as famílias (QsIgPa= 0,30. Na categoria construção enquadram-se, majoritariamente, espécies nativas (87,8% e arbóreas (92,7%. Em tecnologia têm maior representatividade espécies nativas (85,7% e arbóreo/arbustivas (84,1%. As comunidades utilizam diferentes fontes vegetais para as categorias construção, mágica, tecnologia e outros, decorrentes tanto das principais atividades que nelas exercem seus moradores, como dos recursos naturais à sua disposição.The objective of this work is to determine the social behaviour concerning the consumption of vegetal species by local communities. The involved localities are: the Usina São José (Igarassu - Ig, which involves rural communities in the surroundings of the Ecological Reserve of the Usina São José and the Jaguarana (Paulista - PE, an urban

  7. Efeitos de esmolol, lidocaína e fentanil nos intervalos dispersão da onda P, QT, QTc e respostas hemodinâmicas à intubação endotraqueal durante indução com propofol: um estudo comparativo

    Directory of Open Access Journals (Sweden)

    Volkan Hancı

    2013-06-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Investigar o efeito de esmolol, lidocaína e fentanil na dispersão da onda P (DP, durações dos intervalos QT e QT corrigido (QTc e as respostas hemodinâmicas à intubação endotraqueal durante a indução com propofol. MÉTODOS: Foram incluídos 80 pacientes adultos, estado físico ASA I ou II, idade entre 18 e 60 anos, neste estudo prospectivo, randômico e duplo-cego. Todos os pacientes foram submetidos a exame eletrocardiográfico (ECG antes da indução da anestesia. Os pacientes foram randomicamente alocados em quatro grupos iguais. O grupo controle (Grupo C recebeu 5 mL de solução salina; o grupo esmolol (Grupo E recebeu 0,5 mg.kg-1 de esmolol; o grupo fentanil (Grupo F recebeu 2 µg.kg-1 de fentanil e o grupo lidocaína (Grupo L recebeu 1,5 mg.kg-1 de lidocaína antes da indução anestésica. A anestesia foi induzida com propofol. ECG foi feito em todos os pacientes durante o primeiro e o terceiro minutos de indução, 3 minutos após a administração de relaxante muscular e 5 e 10 minutos após intubação. A DP e intervalos QT foram medidos em todos os ECGs. Os intervalos QTc foram determinados com o uso da fórmula de Bazett. Frequência cardíaca (FC e pressão arterial média (PAM foram registradas antes e depois da indução anestésica, imediatamente após a intubação e em 1, 3, 5, 7 e 10 minutos após a intubação. RESULTADOS: Após a intubação, a FC aumentou significativamente nos Grupos C, L e F em comparação com o grupo controle. Porém, não houve diferença significativa nos valores da FC após a intubação entre os grupos E e controle. Nos Grupos C e L, a PAM aumentou significativamente após a intubação em comparação com o grupo controle. No entanto, nos Grupos L, F e E não houve diferença significativa entre os valores da PAM após a intubação em comparação com o grupo controle. A DP foi significativamente mais longa no Grupo C após a intubação em comparação com o

  8. Reduced Insecticide Susceptibility in Aedes vexans (Diptera: Culicidae) Where Agricultural Pest Management Overlaps With Mosquito Abatement.

    Science.gov (United States)

    Dunbar, Mike W; Bachmann, Amanda; Varenhorst, Adam J

    2018-05-04

    Mosquito abatement programs in Midwestern communities frequently exist within landscapes dominated by agriculture. Although separately managed, both agricultural pests and mosquitoes are targeted by similar classes of insecticides. As a result, there is the potential for unintended insecticide exposure to mosquito populations from agricultural pest management. To determine the impact that agricultural management practices have on mosquito insecticide susceptibility we compared the mortality of Aedes vexans (Meigen; Diptera: Culicidae) between populations sampled from locations with and without mosquito abatement in South Dakota, a region dominated by agricultural production. Collection locations were either within towns with mosquito abatement programs (n = 2; Brookings and Sioux Falls, SD) or located > 16 km from towns with mosquito abatement programs (n = 2; areas near Harrold and Willow Lake, SD). WHO bioassays were used to test susceptibly of adults to differing insecticide classes relative to their respective controls; 1) an organochlorine (dieldrin 4%), 2) an organophosphate (malathion 5%), and 3) a pyrethroid (lambda-cyhalothrin 0.05%). Corrected mortality did not significantly differ between locations with or without abatement; however, when locations were analized by proportion of developed land within the surrounding landscape pyrethroid mortality was significantly lower where crop production dominated the surrounding landscape and mosquito abatement was present. These data suggest that agricultural pest management may incidentally contribute to reduced mosquito susceptibility where overlap between agricultural pest management and mosquito abatement exists. Decoupling insecticide classes used by both agricultural and public health pest management programs may be necessary to ensure continued efficacy of pest management tools.

  9. Abatement vs. treatment for efficient diffuse source water pollution management in terrestrial-marine systems.

    Science.gov (United States)

    Roebeling, P C; Cunha, M C; Arroja, L; van Grieken, M E

    2015-01-01

    Marine ecosystems are affected by water pollution originating from coastal catchments. The delivery of water pollutants can be reduced through water pollution abatement as well as water pollution treatment. Hence, sustainable economic development of coastal regions requires balancing of the marginal costs from water pollution abatement and/or treatment and the associated marginal benefits from marine resource appreciation. Water pollution delivery reduction costs are, however, not equal across abatement and treatment options. In this paper, an optimal control approach is developed and applied to explore welfare maximizing rates of water pollution abatement and/or treatment for efficient diffuse source water pollution management in terrestrial-marine systems. For the case of diffuse source dissolved inorganic nitrogen water pollution in the Tully-Murray region, Queensland, Australia, (agricultural) water pollution abatement cost, (wetland) water pollution treatment cost and marine benefit functions are determined to explore welfare maximizing rates of water pollution abatement and/or treatment. Considering partial (wetland) treatment costs and positive water quality improvement benefits, results show that welfare gains can be obtained, primarily, through diffuse source water pollution abatement (improved agricultural management practices) and, to a minor extent, through diffuse source water pollution treatment (wetland restoration).

  10. Estudo comparativo do uso tópico de própolis verde e vermelha na reparação de feridas em ratos Comparative study of topical green and red propolis in the repair of wounds induced in rats

    Directory of Open Access Journals (Sweden)

    Lara Lívia Valença Batista

    2012-12-01

    Full Text Available OBJETIVO: Avaliar a ação cicatrizante de própolis verde e vermelha, correlacionando ao teor de flavonoides MÉTODOS: Foi realizada a quantificação de flavonoides totais dos extratos etanólicos de própolis verde e vermelha para posterior incorporação em pomada base a 20%. Utilizou-se 20 ratos Wistar distribuídos em quatro grupos: solução salina a 0,9% (S, pomada base (B, pomada própolis verde (G, pomada própolis vermelha (R, todos submetidos à confecção de lesões excisivas na região mediana do dorso. Os ratos foram tratados diariamente durante 15 dias. Neste período foram observados peso; temperatura corporal; diâmetro das feridas. Para análise histológica, amostras das feridas foram coletadas. Ao fim do experimento foram realizadas coleta sanguínea e remoção do rim e fígado para análises bioquímica e histológica. RESULTADOS: Os teores de flavonoides totais das própolis verde (4,50 % e vermelha (5,92 % foram elevados (>2 %, mas, embora a segunda apresente teor maior que a primeira, a evolução da própolis verde, macro e histologicamente, foi melhor na reparação das feridas. Não foram observadas nefro ou hepatotoxicidade, resultado corroborado pelos ensaios bioquímicos (TGP e albumina. A própolis influiu na redução de colesterol total, triglicerídeos e glicemia. CONCLUSÃO: Não foi possível correlacionar o teor de flavonoides totais com a ação cicatrizante da própolis. O dado revela a necessidade da elucidação dos flavonoides encontrados em cada classe de própolis para desvendar qual (ou quais flavonoide(s seria(m representativo(s no processo cicatricial.OBJECTIVE: To evaluate the healing action of green and red propolis, correlating it with the content of flavonoids. METHODS: We performed quantification of total flavonoids of green and red propolis ethanol extracts for subsequent incorporation in ointment base to 20%. We used 20 Wistar rats divided into four groups: 0.9% saline (S, ointment base (B

  11. Prospective life cycle carbon abatement for pyrolysis biochar systems in the UK

    International Nuclear Information System (INIS)

    Hammond, Jim; Shackley, Simon; Sohi, Saran; Brownsort, Peter

    2011-01-01

    Life cycle assessment (LCA) of slow pyrolysis biochar systems (PBS) in the UK for small, medium and large scale process chains and ten feedstocks was performed, assessing carbon abatement and electricity production. Pyrolysis biochar systems appear to offer greater carbon abatement than other bioenergy systems. Carbon abatement of 0.7-1.3 t CO 2 equivalent per oven dry tonne of feedstock processed was found. In terms of delivered energy, medium to large scale PBS abates 1.4-1.9 t CO 2 e/MWh, which compares to average carbon emissions of 0.05-0.30 t CO 2 e/MWh for other bioenergy systems. The largest contribution to PBS carbon abatement is from the feedstock carbon stabilised in biochar (40-50%), followed by the less certain indirect effects of biochar in the soil (25-40%)-mainly due to increase in soil organic carbon levels. Change in soil organic carbon levels was found to be a key sensitivity. Electricity production off-setting emissions from fossil fuels accounted for 10-25% of carbon abatement. The LCA suggests that provided 43% of the carbon in the biochar remains stable, PBS will out-perform direct combustion of biomass at 33% efficiency in terms of carbon abatement, even if there is no beneficial effect upon soil organic carbon levels from biochar application. - Research highlights: → Biochar systems offer greater carbon abatement than combustion or gasification. → Carbon abatement of 0.7-1.4t CO 2 e/dry tonne of feedstock processed was found. → Change in soil organic carbon stocks induced by biochar is the key sensitivity. → Biochar systems produce less electricity then combustion or gasification.

  12. Continuous abatement of methane coupled with ectoine production by Methylomicrobium alcaliphilum 20Z in stirred tank reactors: A step further towards greenhouse gas biorefineries

    OpenAIRE

    Cantera, Sara; Lebrero Fernández, Raquel; Rodríguez, Elisa; García Encina, Pedro A.; Muñoz Torre, Raúl

    2017-01-01

    Producción Científica This study demonstrates for the first time the feasibility of producing ectoine (a high added value osmoprotectant intensively used in the cosmetic industry) during the continuous abatement of diluted emissions of methane by Methylomicrobium alcaliphilum 20Z in stirred tank reactors under non-sterile conditions. An increase in NaCl concentration in the cultivation broth from 3 to 6% increased the intra-cellular ectoine yield by a factor of 2 (from 16.5 to 37.4 mg ecto...

  13. A Indústria Eletrônica no Brasil e na China: Um Estudo Comparativo e a Análise das Políticas Públicas de Estímulo a Capacidade Tecnológica do Setor

    Directory of Open Access Journals (Sweden)

    Ghissia Hauser

    2007-09-01

    Full Text Available A economia mundial tem passado por processos de reestruturação, evidenciando um conjunto de países emergentes que poderão se tornar as principais forças produtivas dos próximos 50 anos. Esses países constituem o BRIC - Brasil, Rússia, Índia e China. O objetivo do artigo é comparar o desenvolvimento da indústria eletrônica no Brasil e na China, ambos países integrantes do BRIC, e trazer elementos para a reflexão sobre as políticas públicas de estímulo capacidade tecnológica do setor. Nesse estudo exploratório, evidencia-se a importância da intervenção do governo através de programas e políticas tecnológicas de incentivo a capacidade tecnológica nacional do setor.

  14. Marginal abatement cost curves in general equilibrium: The influence of world energy prices

    International Nuclear Information System (INIS)

    Klepper, Gernot; Peterson, Sonja

    2006-01-01

    Marginal abatement cost curves (MACCs) are a favorite instrument to analyze international emissions trading. This paper focuses on the question of how to define MACCs in a general equilibrium context where the global abatement level influences energy prices and in turn national MACCs. We discuss the mechanisms theoretically and then use the CGE model DART for quantitative simulations. The result is, that changes in energy prices resulting from different global abatement levels do indeed affect national MACCs. Also, we compare different possibilities of defining MACCs-of which some are robust against changes in energy prices while others vary considerably. (author)

  15. Estudo comparativo da eminectomia e do uso de miniplaca na eminência articular para tratamento da luxação recidivante da articulação temporomandibular Comparative study of eminectomy and use of bone miniplate in the articular eminence for the treatment of recurrent temporomandibular joint dislocation

    Directory of Open Access Journals (Sweden)

    Álvaro B. Cardoso

    2005-02-01

    Full Text Available AA luxação da articulação temporomandibular ocorre quando o côndilo mandibular move-se para fora da cavidade glenóide e permanece travado anteriormente à eminência articular, sendo sua ocorrência repetitiva (luxação recidivante geralmente associada a hipermobilidade mandibular e a inclinação da eminência articular. OBJETIVO: Neste estudo avaliou-se, clínica e radiograficamente, a técnica de eminectomia e do uso de miniplaca na eminência articular para tratamento da luxação recidivante da articulação temporomandibular de pacientes operados no Hospital Universitário Osvaldo Cruz (HUOC/UPE, no período de janeiro de 2001 a setembro de 2003. FORMA DE ESTUDO: Retrospectivo. MATERIAL E MÉTODO: A amostra foi composta por 11 pacientes. A cirurgia de eminectomia foi realizada em nove articulações de cinco pacientes, enquanto a cirurgia para colocação de miniplaca na eminência articular em 11 articulações de seis pacientes. A obtenção dos dados foi efetuada através da análise de prontuários e de nova consulta pós-operatória. RESULTADOS: Os resultados mostraram não haver maiores complicações pós-operatórias para as duas técnicas. A abertura bucal máxima foi maior nos pacientes operados pela técnica de eminectomia e nenhum dos pacientes apresentou recorrência da luxação. CONCLUSÃO: Concluiu-se que as duas técnicas mostraram-se eficientes para o tratamento da luxação recidivante da articulação temporomandibular.Dislocation of the temporomandibular joint occurs when the mandibular condyle exits the glenoidal cavity and remains anteriorly locked to the articular eminence. It is repetitive (recurrent dislocation, usually associated with mandibular hypermobility and inclination of the articular eminence. AIM: This study intended to clinically and radiologically assess the technique of eminectomy and the use of a miniplate on the articular eminence for the treatment of recurrent dislocation of the

  16. Discurso e prática religiosa nas Comunidades Eclesiais de Base italianas e brasileiras: um estudo comparativo com base na teoria da mudança social de Max Weber (Speech and religious practice in the Basic Ecclesial Communities in Italy and Brazil

    Directory of Open Access Journals (Sweden)

    Marinete Luzia Francisca de Souza

    2011-12-01

    Full Text Available Este estudo é uma reflexão sobre  o discurso e a prática nas comunidades Eclesiais de Base no Brasil e na Itália. Buscamos demonstrar, a partir de uma pesquisa empírica e teórica, as relações entres duas Comunidades Eclesiais de Base, a Comunidade San Paolo (Roma-IT e a Prelazia de São Félix (Mato Gross-BR, demonstrando que estas baseiam-se em dois elementos: resultam das discussões  advindas do Concílio Vaticano II e estão fortemente ligadas a seus líderes. E, ainda, que tais comunidades ligam-se por fortes laços simbólicos. Este fato permitiu-nos concluir  que a Teologia da Libertação empenhou-se em promover mudanças sociais e em criar um corpo simbólico que a corroborasse. Tais análises foram sustentadas pela teoria da transformação social de Max Weber e, ainda, pelos estudos  de Karl Mannheim e de  Glock e Stark. Palavras-chaves:Transformação social, Teologia da Libertação, prática, discurso. Abstract This study is a reflection of the discourse and practice on the Basic Ecclesial communities in Brazil and Italy. We try to show, from an empirical and theoretical research, the relations between two Christian Base Communities: the San Paolo Community (Rome – IT and the Prelature of São Félix (BR – Mato Grosso, based on two factors: the result of discussions arising out of Vatican II, and the strong link to its leaders. Such communities bind by strong symbolic ties that really allowed us to conclude that Liberation Theology endeavored to promote social changes and to create a symbolic body that corroborates it. Such analysis was supported by the theory of social transformation of Max Weber, by the studies of Karl Mannheim and Glock and Stark. Keywords: Social Transformation; Liberation Theology, Practice, Discourse.

  17. Estudo comparativo da história clínica e da polissonografia na síndrome da apnéia/ hipopnéia obstrutiva do sono Comparative study between clinical history and polysomnogram in the obstructive sleep apnea/ hypopnea syndrome

    Directory of Open Access Journals (Sweden)

    Lys Maria Allenstein Gondim

    2007-12-01

    Full Text Available O reconhecimento dos distúrbios respiratórios do sono tem aumentado a cada ano. Manifestações, como o ronco, consideradas meros incômodos vêm adquirindo importância no que diz respeito à qualidade de vida e seu impacto social. OBJETIVO: Comparar a história clínica com os resultados da polissonografia (PSG, na Síndrome da Apnéia/Hipopnéia Obstrutiva do Sono (SAHOS, é o principal objetivo deste trabalho. MATERIAL E MÉTODOS: Foi realizado um estudo retrospectivo, com 125 pacientes, através da análise de questionários específicos, IMC e Escala de Epworth. RESULTADOS: Dentre os pacientes, 75 eram do sexo masculino e 50 do feminino. O principal sintoma foi a roncopatia. 46% apresentaram PSG normais, 30% SAHOS leve, 15% moderada e 9% severa, não se evidenciando correlação estatística entre a clínica e a PSG. Dentre as queixas, somente a insônia foi relevante, em análise univariada e em pacientes normais e com SAHOS leve (pRecognizing sleep-disordered breathing is on the rise every year. Manifestations, such as snoring, that were earlier considered mere inconvenients are now acquiring greater importance concerning life quality and social impact. AIM OF THE STUDY: To compare the clinical history to polysomnogram (PSG results in the Obstructive Sleep Apnea/Hypopnea Syndrome (OSAHS. MATERIALS AND METHODS: 125 patients were analyzed, in a retrospective study. Specific questionnaires, avaliations of Body Mass Index and Epworth Scale were carried out. RESULTS: Among the patients, 75 were males and 50 were females. The main symptom was snoring. 46% had normal PSG, 30% had light OSAHS, 15% moderate and 9% severe OSAHS and it was not observed a correlation between clinical data and PSG results. Concerning clinical symptoms, only insomnia has shown relevance when univariably analyzed in normal and light OSAHS patients (p<0,05 compared to patients with moderate and severe OSAHS, losing its importance when analyzed together with other

  18. Positioning of the femoral tunnel for arthroscopic reconstruction of the anterior cruciate ligament: comparative study of 2 techniques Posicionamento do túnel femoral na reconstrução artroscópica do LCA: estudo comparativo de duas técnicas

    Directory of Open Access Journals (Sweden)

    Roberto Freire da Mota Albuquerque

    2007-01-01

    Full Text Available OBJECTIVE: To compare the accuracy of positioning of the femoral tunnel in reconstructing the anterior cruciate ligament by means of 2 techniques: tibial tunnel and anteromedial portal. METHOD: Femoral tunnels were drilled in 20 knees from human cadavers by means of arthroscopy. Group I had the femoral tunnel drilled via a trans-tibial tunnel, and Group II via the anteromedial portal. Four variables were measured: A posterior wall thickness; B tunnel positioning at the notch; C tunnel inclination in relation to the femoral axis; and D distance between the wire guide exit and the lateral epicondyle. RESULTS: As above, respectively, A 2.23 mm for group I and 2.36 mm for group II (P =.54; B 25.5° for group I and 30.0° for group II (P =.23; C 23.9° for group I and 32.0° for group II (P =.02; D 7.8 cm for group I and 3.9 cm for group II (P OBJETIVO: Comparar a acurácia do posicionamento do túnel femoral na reconstrução do ligamento cruzado anterior através de duas vias: túnel tibial e portal ântero - medial. MÉTODO: Foram perfurados túneis femorais em vinte joelhos de cadáveres humanos por via artroscópica. Grupo I: túnel femoral por acesso trans túnel tibial. Grupo II: via portal ântero-medial. Quatro variáveis foram estudadas: A espessura da parede posterior; B posicionamento do túnel no intercôndilo; C angulação do túnel em relação ao eixo do fêmur; D distância entre a saída do fio guia e o epicôndilo lateral. RESULTADO: A grupo I: 2,23 mm, grupo II: 2,36 mm (p=0,543; B grupo I: 25,5º, grupo II: 30º (p=0,226; C grupo I: 23,9º, grupo II: 32º (p= 0,014; D grupo I: 7,8 cm, grupo II 3,9 cm (p<0,001. CONCLUSÃO: As duas técnicas obteveram o posicionamento desejado da entrada do túnel femoral e espessura adequada da cortical posterior. A perfuração via portal ântero-medial pode propiciar maior proteção contra rotura da parede posterior.

  19. Upper Blackstone Water Pollution Abatement District Chief Operator Recognized for Outstanding Service

    Science.gov (United States)

    Joseph Nowak, a resident of Ware Mass. and Chief Operator of the Upper Blackstone Water Pollution Abatement District (District) in Milbury, Mass., was honored by EPA with a 2016 Regional Wastewater Treatment Plant Operator of the Year Excellence Award.

  20. Cigar Lake project abatement of August 2008 inflow - a story of innovation and relentless teamwork

    International Nuclear Information System (INIS)

    Forbes, R.; Dixon, B.; King, C.; Dent, A.

    2010-01-01

    'Full text:' The presentation recounts the process of finding August 2008 inflow, as well as planning and executing the inflow abatement project. Brian Dixon will speak regarding locating the inflow, preparing the inflow abatement plan, and preparing the underground work site at the (underwater) 420 meter level. Craig King will speak regarding design, procurement, and installation of the grout bag barrier adjacent to the No. 1 Shaft at the underwater work site. April Dent will speak regarding the surface abatement drilling and backfilling/grouting, as well as the testing of the completed inflow abatement work. The team will discuss the innovative methods to locate the source of inflow and steps taken to remediate it. (author)

  1. Cigar Lake project abatement of August 2008 inflow - a story of innovation and relentless teamwork

    Energy Technology Data Exchange (ETDEWEB)

    Forbes, R.; Dixon, B.; King, C.; Dent, A., E-mail: brian_dixon@cameco.com [Cameco Corp., Cigar Lake Project, Saskatoon, SK (Canada)

    2010-07-01

    'Full text:' The presentation recounts the process of finding August 2008 inflow, as well as planning and executing the inflow abatement project. Brian Dixon will speak regarding locating the inflow, preparing the inflow abatement plan, and preparing the underground work site at the (underwater) 420 meter level. Craig King will speak regarding design, procurement, and installation of the grout bag barrier adjacent to the No. 1 Shaft at the underwater work site. April Dent will speak regarding the surface abatement drilling and backfilling/grouting, as well as the testing of the completed inflow abatement work. The team will discuss the innovative methods to locate the source of inflow and steps taken to remediate it. (author)

  2. Virtual Reality Platform Based Simulation System of Environmental Noise Abatement Research

    Science.gov (United States)

    Yijun, Liu; Yu, Fang; Xiaoman, He; Yongyou, Wang

    The general mathematic mode of computing noise abatement is commonly used for most project planning and appraisal of environmental noise abatement projects. However, the inconvenient and impracticable mode and algorithm usually cannot meet the real world computation and testing. Therefore, a more practicable abatement mode and algorithm (multiple noise sources with multiband under sound barriers) which had been applied to VR based simulation system. That implemented the function of real-time demonstrating noise scattering condition within 3D virtual space, furthermore, with sound barriers added in 3D scene, the effectiveness of denoise by sound barriers also can be demonstrated within this system. That provides a significant solution for environmental noise abatement projects as a whole.

  3. Estudo comparativo da biocompatibilidade da submucosa intestinal porcina e pericárdio bovino usados como enxertos na veia cava de cães Comparative study of the biocompatibility of the porcine intestinal submucosa and bovine pericardium used as grafts in the inferior cava vein of dogs

    Directory of Open Access Journals (Sweden)

    Fernando Hintz Greca

    2005-08-01

    Full Text Available OBJETIVO: Comparar a biocompatibilidade entre submucosa de intestino delgado (SID porcino e o pericárdio bovino como enxerto no reparo de lesões criadas na veia cava inferior de cães. MÉTODOS: Dezesseis cães foram submetidos a laparotomia. Após a abertura da cavidade abdominal a veia cava foi identificada e em seguida procedeu-se com a retirada de um segmento elíptico de 1,5X3cm de sua parede anterior. Em 8 animais o defeito foi reparado com SID porcino (grupo A e nos 8 animais restantes o defeito foi reparado com pericárdio bovino (grupo B.No 30° dia de P.O. realizou-se uma ultra-sonografia e a eutanásia foi realizada no 40°dia de pós-operatório. RESULTADOS: Observou-se estenose da veia cava em 1 cão do grupo do grupo A e em 2 animais do grupo B além de trombose em 1 cão desse mesmo grupo. A análise microscópica revelou um processo inflamatório crônico moderado em ambos os grupos. A endotelização do enxerto, regeneração de fibras musculares lisas e depósito de colágeno também foi similar nos 2 grupos estudados. CONCLUSÃO: A SID provou ser um excelente substrato para a regeneração vascular quando implantado em veia cava superior, contudo os resultados encontrados não diferem daqueles observados com o uso de pericárdio bovino.PURPOSE: To compare the biocompatibility of the bovine pericardium and the small intestine submucosa (SIS when used to repair a created defect in the inferior vena cava of dogs. METHODS: Sixteen male mongrel dogs were submitted to a midline laparotomy incision. An elliptical segment (1,5 X 3,0 cm of the inferior vena cava, below the renal veins, was excised. In 8 dogs, the A group, a patch of porcine small bowel submucosa was used to repair the defect. In the 8 remaining dogs, the B group, a bovine pericardium was implanted in the vena cava. On the 30th post-operative day an ultrasound was performed in order to identify stenosis. The euthanasia was accomplished in the 40th post-operative day

  4. Entropia: um novo método de mensuração da profundidade da anestesia. Estudo comparativo com o índice bispectral na avaliação clínica da intubação traqueal com sevoflurano

    Directory of Open Access Journals (Sweden)

    Nunes Rogean Rodrigues

    2004-01-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Entropia espectral, um novo método de análise do EEG, baseado na quantificação do caos do EEG, foi desenvolvido para monitorização da profundidade anestésica. Ele separa a monitorização em dois tipos de análise: entropia de estado (SE, que inclui sinais de baixa freqüência (< 32 Hz e entropia de resposta (RE, que inclui sinais com freqüência até 47 Hz. O objetivo deste estudo foi comparar os valores de entropia com os do BIS e respostas sub-corticais à intubação orotraqueal, em pacientes submetidos à anestesia geral com sevoflurano. MÉTODO: Participaram do estudo 36 pacientes com idades entre 20 e 44 anos, ASA I, distribuídos em quatro grupos de nove, submetidos à intubação orotraqueal (IOT. Em todos os grupos, a anestesia foi induzida com sevoflurano, associado ou não ao fentanil, de acordo com o seguinte: (G1 = sevoflurano e 2,5 µg.kg-1 de fentanil; G2 = sevoflurano e 5 µg.kg-1 de fentanil; G3 = sevoflurano e 7,5 µg.kg-1 de fentanil e G4 = sevoflurano e solução fisiológica. Foram avaliados os seguintes parâmetros: PAS, PAD, FC, BIS, SE, RE, concentração expirada do sevoflurano (CE e resposta motora à IOT em três momentos: M1 = imediatamente antes da indução; M2 = imediatamente antes da intubação traqueal e M3 = um minuto após a intubação traqueal. RESULTADOS: Os valores de BIS e SE variaram de maneira linear em todos os grupos, com diferenças significativas entre M2 e M3 nos grupos G1 e G4, tendo ambos (BIS e SE apresentado valores acima dos limítrofes entre consciência e inconsciência no momento M3 do G4. Em relação ao RE, apenas o G3 não mostrou variações estatisticamente significativas entre os momentos M2 e M3. As variações hemodinâmicas não ultrapassaram valores clinicamente significativos, exceto elevações da FC no G4 entre os momentos M1 e M3 (p < 0,05%. No G1, 66% dos pacientes reagiram as manobras de IOT e 100% no grupo G4. CONCLUSÕES: Este estudo

  5. Estudo comparativo histológico na prega vocal após incisão com instrumental a frio e com laser de CO2 em modelo animal Comparative histology study of the vocal folds after incision with cold instruments and CO2 laser in an animal model

    Directory of Open Access Journals (Sweden)

    Fernando C. C. Santos

    2003-12-01

    Full Text Available Dentre os vários tipos de laser usados em Medicina, o laser de CO2 é o mais usado na Otorrinolaringologia e Cirurgia de Cabeça e Pescoço. As vantagens de seu uso são a diminuição do sangramento, a diminuição do edema no pós-operatório e a facilidade de acesso ao campo operatório, entre outras. Desde os trabalhos de Jako e Strong em 1972(1,2, quando o laser de CO2 passou a ser usado no tratamento de papilomatose laríngea e de lesões malignas glóticas iniciais, suas indicações têm aumetado, principalmente em lesões benignas, a partir da alta tecnologia desenvolvida dos últimos anos como, por exemplo, a diminuição do microspot e o uso do superpulso, reduzindo conseqüentemente seu efeito térmico sobre os tecidos. MÉTODOS: Neste trabalho foram realizadas incisões com instrumental a frio e com laser de CO2 1 watt de modo contínuo e superpulso, em pregas vocais caninas e observado, através de cortes histológicos corados pelo método de Sirius Red, a quantidade de colágeno depositada sobre as mesmas. RESULTADOS: A quantidade de colágeno das pregas vocais foi maior do que no grupo controle, e estatisticamente maior no grupo de animais submetidos a procedimentos com instrumental a frio do que com laser de CO2. Não houve diferença estatística entre o grupo controle e o grupo submetido a incisões com instrumentos a frio. CONCLUSÃO: A microcirurgia de laringe com o laser de CO2, quando este é usado em baixa potência, com pequeno "microspot" e com superpulso, é um método seguro em relação à deposição de colágeno, quando comparado com instrumentos com lâmina a frio, obedecendo os princípios da fonomicrocirurgia.Among the several types of lasers employed in medicine today, the CO2 is the most widely used in otorhinolaryngology and head and neck surgeries. The advantages of its use are: the reduction in bleeding, reduction in post-operative edema and the easy access to the operation site, among others. Ever since

  6. Abatement of malodorants from pesticide factory in dielectric barrier discharges

    International Nuclear Information System (INIS)

    Chen Jie; Yang Jiantao; Pan Hua; Su Qingfa; Liu Yamin; Shi Yao

    2010-01-01

    Traditional odor control methods are limitative technically and economically for the abatement of odor from pesticide factory due to its toxicity and complicated composition. Non-thermal plasma (NTP) methods, typically characterized by high removal efficiency, energy yields and good economy, offer possible alternative solutions. This paper provides laboratory scale experimental data on the removal of simulated odors from pesticide factory with various humidity (0-0.8 vol%) and oxygen contents (0-21%) by a dielectric barrier discharge (DBD) reactor. Peak voltage and initial dimethylamine (DML) concentration are important factors that influence the DML removal efficiency and energy yield. The conversion of DML of 761 mg/m 3 reaches 100% at a peak voltage of 41.25 kV. Under the experiment conditions, the conversion of DML increases with an increase of oxygen contents. And the highest DML conversion was achieved with the gas stream containing 0.3% water. Simultaneously, the concentration of O 3 and OH radical in reactor was measured. Higher conversion, higher energy yield and fewer byproducts were found in mixed odor (DML + dimethyl sulfide (DMS)) treatment than that in single odor treatment. The energy yield is promoted from 2.13 to 5.20 mg/kJ.

  7. Risk management for sulfur dioxide abatement under multiple uncertainties

    Science.gov (United States)

    Dai, C.; Sun, W.; Tan, Q.; Liu, Y.; Lu, W. T.; Guo, H. C.

    2016-03-01

    In this study, interval-parameter programming, two-stage stochastic programming (TSP), and conditional value-at-risk (CVaR) were incorporated into a general optimization framework, leading to an interval-parameter CVaR-based two-stage programming (ICTP) method. The ICTP method had several advantages: (i) its objective function simultaneously took expected cost and risk cost into consideration, and also used discrete random variables and discrete intervals to reflect uncertain properties; (ii) it quantitatively evaluated the right tail of distributions of random variables which could better calculate the risk of violated environmental standards; (iii) it was useful for helping decision makers to analyze the trade-offs between cost and risk; and (iv) it was effective to penalize the second-stage costs, as well as to capture the notion of risk in stochastic programming. The developed model was applied to sulfur dioxide abatement in an air quality management system. The results indicated that the ICTP method could be used for generating a series of air quality management schemes under different risk-aversion levels, for identifying desired air quality management strategies for decision makers, and for considering a proper balance between system economy and environmental quality.

  8. Solar energy and the abatement of atmospheric emissions

    International Nuclear Information System (INIS)

    Mirasgedis, S.; Diakoulaki, D.; Assimacopoulos, D.

    1996-01-01

    In spite of the fact that solar energy is a ''clean'' energy form, gaseous pollutants are emitted during the manufacturing of the systems necessary for its utilisation. An attempt is made in this paper to estimate the level of atmospheric pollutants emitted during the successive stages which make up the manufacture process for solar water heating (SWH) systems, and to evaluate these results in comparison with the respective pollutant emission levels attributed to the generation of electricity in Greece's conventional power plants. As energy consumption is recognised as the main source of atmospheric pollution, a Life Cycle Analysis (LCA) method was applied, focusing on the most energy-consuming stages of the SWH system production process. The conclusions of the analysis indicate that the emissions of gaseous pollutants associated with the utilisation of solar energy are considerably lower than those caused by the production of electricity in conventional systems, thereby substantiating that solar energy utilisation can make a notable contribution to the abatement of atmospheric pollution. (author)

  9. Renewable energy and CO_2 abatement in Italy

    International Nuclear Information System (INIS)

    Marcantonini, Claudio; Valero, Vanessa

    2017-01-01

    In order to combat global warming, Italy has committed to reduce its CO_2 emissions. To this end, it has significantly encouraged renewable energy development through a variety of support schemes, ranging from green certificates to feed-in and premium tariffs. As a result, the production of electricity from renewable energy sources, in particular from solar and wind energy, has risen considerably over the past years. In this paper we review the Italian support schemes for wind and solar energy and estimate the cost of abating CO_2 emissions by generating electricity from these two sources of energy for the period 2008–2011. The results show that the average costs for wind were around 165 €/tCO_2. For solar, they were much higher, around 1000 €/tCO_2, as solar energy received much higher remunerations than wind energy. These costs were much higher than in Germany. This was due to the differences between the level of incentives and the different power systems. - Highlights: • We estimate the cost of reducing CO_2 emissions by wind and solar energy in Italy in 2008–2011. • The average costs for wind were around 165 €/tCO_2. • The average costs for solar were much higher, around 1000 €/tCO_2. • Those costs were much higher than in Germany. • This was due to the differences in the levels of incentives and to the different power systems.

  10. CO2 Abatement In The Iron And Steel Industry

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-01-15

    The iron and steel industry is the largest industrial source of CO2 emissions due to the energy intensity of steel production, its reliance on carbon-based fuels and reductants, and the large volume of steel produced -- over 1414 Mt in 2010. With the growing concern over climate change, steel makers are faced with the challenge of finding ways of lowering CO2 emissions without seriously undermining process efficiency or considerably adding to costs. This report examines ways of abating CO2 emissions from raw materials preparation (coking, sintering and pelletising plants) through to the production of liquid steel in basic oxygen furnaces and electric arc furnaces. Direct reduction and smelting reduction processes are covered, as well as iron making in a blast furnace. A range of technologies and measures exist for lowering CO2 emissions including minimising energy consumption and improving energy efficiency, changing to a fuel and/or reducing agent with a lower CO2 emission factor (such as wood charcoal), and capturing the CO2 and storing it underground. Significant CO2 reductions can be achieved by combining a number of the available technologies. If carbon capture and storage is fitted than steel plants could become near zero emitters of CO2.

  11. Climate and air quality-driven scenarios of ozone and aerosol precursor abatement

    International Nuclear Information System (INIS)

    Rypdal, Kristin; Rive, Nathan; Berntsen, Terje; Fagerli, Hilde; Klimont, Zbigniew; Mideksa, Torben K.; Fuglestvedt, Jan S.

    2009-01-01

    In addition to causing domestic and regional environmental effects, many air pollutants contribute to radiative forcing (RF) of the climate system. However, climate effects are not considered when cost-effective abatement targets for these pollutants are established, nor are they included in current international climate agreements. We construct air pollution abatement scenarios in 2030 which target cost-effective reductions in RF in the EU, USA, and China and compare these to abatement scenarios which instead target regional ozone effects and particulate matter concentrations. Our analysis covers emissions of PM (fine, black carbon and organic carbon), SO 2 , NO x , CH 4 , VOCs, and CO. We find that the effect synergies are strong for PM/BC, VOC, CO and CH 4 . While an air quality strategy targeted at reducing ozone will also reduce RF, this will not be the case for a strategy targeting particulate matter. Abatement in China dominates RF reduction, but there are cheap abatement options also available in the EU and USA. The justification for international cooperation on air quality issues is underlined when the co-benefits of reduced RF are considered. Some species, most importantly SO 2 , contribute a negative forcing on climate. We suggest that given current knowledge, NO x and SO 2 should be ignored in RF-targeted abatement policies.

  12. Marginal abatement cost curve for nitrogen oxides incorporating controls, renewable electricity, energy efficiency, and fuel switching.

    Science.gov (United States)

    Loughlin, Daniel H; Macpherson, Alexander J; Kaufman, Katherine R; Keaveny, Brian N

    2017-10-01

    A marginal abatement cost curve (MACC) traces out the relationship between the quantity of pollution abated and the marginal cost of abating each additional unit. In the context of air quality management, MACCs are typically developed by sorting control technologies by their relative cost-effectiveness. Other potentially important abatement measures such as renewable electricity, energy efficiency, and fuel switching (RE/EE/FS) are often not incorporated into MACCs, as it is difficult to quantify their costs and abatement potential. In this paper, a U.S. energy system model is used to develop a MACC for nitrogen oxides (NO x ) that incorporates both traditional controls and these additional measures. The MACC is decomposed by sector, and the relative cost-effectiveness of RE/EE/FS and traditional controls are compared. RE/EE/FS are shown to have the potential to increase emission reductions beyond what is possible when applying traditional controls alone. Furthermore, a portion of RE/EE/FS appear to be cost-competitive with traditional controls. Renewable electricity, energy efficiency, and fuel switching can be cost-competitive with traditional air pollutant controls for abating air pollutant emissions. The application of renewable electricity, energy efficiency, and fuel switching is also shown to have the potential to increase emission reductions beyond what is possible when applying traditional controls alone.

  13. How large a carbon tax is justified by the secondary benefits of CO2 abatement?

    International Nuclear Information System (INIS)

    Ekins, Paul

    1996-01-01

    The combustion of fossil fuels emits a range of damaging pollutants, the emissions of which are reduced if fossil fuel use is reduced in order to achieve CO 2 abatement. These reductions are termed the secondary benefits of such abatement. The paper reviews estimates of the size of these benefits at current levels of emissions of the relevant pollutants. Although the estimates are few and uncertain, their mid-range suggests that the secondary benefits are of the same order of magnitude as the gross costs of medium to high levels of CO 2 abatement, and are substantially larger than the (equally uncertain) estimates of the primary benefits of CO 2 abatement, except where these benefits derive from consideration of damages from unabated global warming in the very long term. The paper then reviews these calculations in the light of the limits on SO 2 emissions mandated by the Second Sulphur Protocol (SSP). It finds that the secondary benefits from abating SO 2 alone beyond the limits of the SSP still provide a substantial offset to the costs of a carbon tax. The paper concludes that the existence of significant secondary benefits greatly reinforces the economic case for an aggressive policy of CO 2 abatement

  14. Estudo comparativo da madeira de Mimosa ophthalmocentra Mart. ex Benth e Mimosa tenuiflora (Willd. Poir. (Fabaceae-Mimosoideae na caatinga nordestina Comparative study of Mimosa ophthalmocentra Mart. ex Benth and Mimosa tenuiflora (Willd. Poir. (Fabaceae-Mimosoideae wood in the caatinga of Northeast Brazil

    Directory of Open Access Journals (Sweden)

    Lazaro Benedito da Silva

    2011-06-01

    Full Text Available Pela importância econômica da madeira de algumas espécies do gênero Mimosa L. ocorrentes na caatinga nordestina e pelo fato de Mimosa ophthalmocentra Mart. ex Benth. (jurema-de-imbira, às vezes, ser confundida com Mimosa tenuiflora (Willd. Poir. (jurema-preta ou vice-versa, este trabalho objetivou apresentar novos dados referentes à anatomia e densidade básica da madeira das duas espécies, visando oferecer subsídio para identificação das duas espécies, identificar caracteres anatômicos da madeira relacionando-os com o ambiente caatinga e apresentar o potencial energético que sua madeira possui. O estudo anatômico e a determinação da densidade da madeira foram realizados com amostras ao nível do peito (1,30 m acima do solo e em dois galhos com diferentes diâmetros, de espécimes ocorrentes nos municípios de Serra Talhada e Sertânia, Pernambuco, Brasil. As espécies apresentam distinção expressa através do tipo de casca, coloração do cerne e do alburno, além das características peculiares da madeira. Mimosa ophthalmocentra apresenta camadas de crescimento distintas, constituídas por linhas de parênquima axial contendo cristais, parênquima axial escasso e menor quantidade de raios por mm². Já Mimosa tenuiflora apresenta camadas de crescimento distintas, porém sem cristais, parênquima axial vasicêntrico, em faixas ou aliforme confluente, e maior percentagem de raios. Ambas apresentam algumas estruturas da madeira com as características anatômicas comuns às diversas espécies do gênero Mimosa, contribuindo assim para uma melhor caracterização do gênero. Pelos parâmetros anatômicos da madeira e pela elevada densidade básica (>0,84 g/cm³, concluiu-se que as duas espécies apresentam perspectivas seguras para a produção de álcool combustível e carvão vegetal desde a fase de lenho juvenil. Mimosa ophthalmocentra apresenta maior potencial energético, pela maior percentagem de fibras e por possuir par

  15. Future needs for ship emission abatement and technical measures

    Directory of Open Access Journals (Sweden)

    Teresa ANTES

    2013-01-01

    Full Text Available The International Maritime Organization (IMO has revised air pollution regulations in MARPOL Annex VI. In 2012 Emission Control Areas (ECA will limit fuel sulphur content to 1% and from 2015 to 0.1%. NOx emissions based on ships engine speed are also reduced for new vessels (2012 & 2016. Facing this legislation, ship owners have the alternative either to operate ships with costly low-sulphur fuels, or to keep using HFO but together with a gas cleaning equipment at the ship stack in order to reduce the rejected amount of SO2 gas in the atmosphere. To achieve this requirement, research and development organizations came out with proposing a solution that uses a device for cleaning exhaust gas of marine diesel engines. The paper presents a short communication about the DEECON project, which aim is to create a novel on-board after-treatment unit more advanced than any currently available. Each sub-unit of the system will be optimized to remove a specific primary pollutant. In particular, the technology within the DEECON system is based on novel or improved abatement techniques for reducing SOx, NOx, Particulate Matter (PM, CO and Volatile Organic Compounds (VOC. Some of these technologies are completely new for the maritime sector and they will represent a breakthrough in the reduction of the atmospheric emissions of ships, moving forward the performance of exhaust gas cleaning systems and fostering and anticipating the adoption of future and tighter regulatory requirements. In addition, an after-treatment strategy enables the possible adoption of alternative fuels, which often have their own emissions characteristics.

  16. Marginal abatement cost curves and the optimal timing of mitigation measures

    International Nuclear Information System (INIS)

    Vogt-Schilb, Adrien; Hallegatte, Stéphane

    2014-01-01

    Decision makers facing abatement targets need to decide which abatement measures to implement, and in which order. Measure-explicit marginal abatement cost curves depict the cost and abating potential of available mitigation options. Using a simple intertemporal optimization model, we demonstrate why this information is not sufficient to design emission reduction strategies. Because the measures required to achieve ambitious emission reductions cannot be implemented overnight, the optimal strategy to reach a short-term target depends on longer-term targets. For instance, the best strategy to achieve European's −20% by 2020 target may be to implement some expensive, high-potential, and long-to-implement options required to meet the −75% by 2050 target. Using just the cheapest abatement options to reach the 2020 target can create a carbon-intensive lock-in and make the 2050 target too expensive to reach. Designing mitigation policies requires information on the speed at which various measures to curb greenhouse gas emissions can be implemented, in addition to the information on the costs and potential of such measures provided by marginal abatement cost curves. - Highlights: • Classification of existing Marginal Abatement Cost Curves (MACC). • MACCs do not provide separated data on the speed at which measures can be implemented. • Optimal measures to reach a short-term target depend on longer-term targets. • Unique carbon price or aggregated emission-reduction target may be insufficient. • Room for short-term sectoral policies if agents are myopic or governments cannot commit

  17. Estimating the National Carbon Abatement Potential of City Policies: A Data- Driven Approach

    Energy Technology Data Exchange (ETDEWEB)

    Eric O’Shaughnessy, Jenny Heeter, David Keyser, Pieter Gagnon, and Alexandra Aznar

    2016-10-01

    Cities are increasingly taking actions such as building code enforcement, urban planning, and public transit expansion to reduce emissions of carbon dioxide in their communities and municipal operations. However, many cities lack the quantitative information needed to estimate policy impacts and prioritize city actions in terms of carbon abatement potential and cost effectiveness. This report fills this research gap by providing methodologies to assess the carbon abatement potential of a variety of city actions. The methodologies are applied to an energy use data set of 23,458 cities compiled for the U.S. Department of Energy’s City Energy Profile tool. The analysis estimates the national carbon abatement potential of the most commonly implemented actions in six specific policy areas. The results of this analysis suggest that, in aggregate, cities could reduce nationwide carbon emissions by about 210 million metric tons of carbon dioxide (MMT CO2) per year in a "moderate abatement scenario" by 2035 and 480 MMT CO2/year in a "high abatement scenario" by 2035 through these common actions typically within a city’s control in the six policy areas. The aggregate carbon abatement potential of these specific areas equates to a reduction of 3%-7% relative to 2013 U.S. emissions. At the city level, the results suggest the average city could reduce carbon emissions by 7% (moderate) to 19% (high) relative to current city-level emissions. City carbon abatement potential is sensitive to national and state policies that affect the carbon intensity of electricity and transportation. Specifically, the U.S. Clean Power Plan and further renewable energy cost reductions could reduce city carbon emissions overall, helping cities achieve their carbon reduction goals.

  18. Ensaio clínico randomizado, duplo-cego, comparativo entre a associação de cafeína, carisoprodol, diclofenaco sódico e paracetamol e a ciclobenzaprina, para avaliação da eficácia e segurança no tratamento de pacientes com lombalgia e lombociatalgia agudas A randomized, double-blind clinical trial, comparing the combination of caffeine, carisoprodol, sodium diclofenac and paracetamol versus cyclobenzaprine, to evaluate efficacy and safety in the treatment of patients with acute low back pain and lumboischialgia

    Directory of Open Access Journals (Sweden)

    Reynaldo Jesus Garcia Filho

    2006-01-01

    Full Text Available OBJETIVO: Testar eficácia e segurança da associação de diclofenaco, paracetamol, carisoprodol e cafeína, no tratamento da lombalgia e lombociatalgia agudas, comparadas à eficácia e segurança da ciclobenzaprina. DESENHO DO ESTUDO: Ensaio clínico unicêntrico, randomizado, duplo-cego, comparativo. MÉTODO: As medicações foram administradas 3 vezes ao dia por um período de 7 dias. GRUPO ESTUDADO: 108 pacientes com diagnóstico de lombalgia e lombociatalgia agudas nos últimos 7 dias foram randomizados, sendo 54 em cada grupo. DESFECHO: Os critérios de eficácia primários selecionados para o estudo foram escala visual analógica para dor e questionário de Roland Morris, cujos resultados de antes e depois do tratamento foram comparados. Os secundários foram avaliação global do tratamento pelo paciente e pelo investigador e uso da medicação analgésica de resgate. Os critérios de segurança foram análise de tolerabilidade, interrupção da medicação por evento adverso e exames laboratoriais. RESULTADO: Não houve diferença estatística entre os grupos, em relação à eficácia, em nenhum dos desfechos analisados. Ambas as medicações mostraram-se seguras e toleráveis no tratamento da lombalgia e da lombociatalgia agudas. A análise estatística rigorosa mostrou diferença nos dois grupos apenas no que se refere aos eventos adversos, sendo mais freqüentes no grupo que foi tratado com a ciclobenzaprina.OBJECTIVE: To evaluate the efficacy and safety of the combination of diclofenac, paracetamol, carisoprodol, and caffeine in the treatment of acute low back pain and lumboischialgia, compared to the efficacy and safety of cyclobenzaprine. STUDY DESIGN: Single-center, comparative, randomized, double-blind clinical trial. METHOD: Drugs were administered t.i.d. for a period of 7 days. STUDY POPULATION: 108 patients with a diagnosis of acute low back pain and lumboischialgia in the last 7 days were randomized, being included 54

  19. Assessing the effects of noise abatement measures on health risks: A case study in Istanbul

    International Nuclear Information System (INIS)

    Ongel, Aybike; Sezgin, Fatih

    2016-01-01

    In recent decades, noise pollution caused by industrialization and increased motorization has become a major concern around the world because of its adverse effects on human well-being. Therefore, transportation agencies have been implementing noise abatement measures in order to reduce road traffic noise. However, limited attention is given to noise in environmental assessment of road transportation systems. This paper presents a framework for a health impact assessment model for road transportation noise emissions. The model allows noise impacts to be addressed with the health effects of air pollutant and greenhouse gas emissions from road transportation. The health damages assessed in the model include annoyance, sleep disturbance, and cardiovascular disease in terms of acute myocardial infarction. The model was applied in a case study in Istanbul in order to evaluate the change in health risks from the implementation of noise abatement strategies. The noise abatement strategies evaluated include altering pavement surfaces in order to absorb noise and introducing speed limits. It was shown that significant improvements in health risks can be achieved using open graded pavement surfaces and introducing speed limits on highways. - Highlights: • Transportation noise has a significant effect on health. • Noise should be included in the environmental assessment of transportation systems. • Traffic noise abatement measures include noise reducing pavements and speed limits. • Noise abatement measures help reduce the health risks of transportation noise. • Speed limit reduction on uncongested roads is an effective way to reduce health risks.

  20. Save water to save carbon and money: developing abatement costs for expanded greenhouse gas reduction portfolios.

    Science.gov (United States)

    Stokes, Jennifer R; Hendrickson, Thomas P; Horvath, Arpad

    2014-12-02

    The water-energy nexus is of growing interest for researchers and policy makers because the two critical resources are interdependent. Their provision and consumption contribute to climate change through the release of greenhouse gases (GHGs). This research considers the potential for conserving both energy and water resources by measuring the life-cycle economic efficiency of greenhouse gas reductions through the water loss control technologies of pressure management and leak management. These costs are compared to other GHG abatement technologies: lighting, building insulation, electricity generation, and passenger transportation. Each cost is calculated using a bottom-up approach where regional and temporal variations for three different California water utilities are applied to all alternatives. The costs and abatement potential for each technology are displayed on an environmental abatement cost curve. The results reveal that water loss control can reduce GHGs at lower cost than other technologies and well below California's expected carbon trading price floor. One utility with an energy-intensive water supply could abate 135,000 Mg of GHGs between 2014 and 2035 and save--rather than spend--more than $130/Mg using the water loss control strategies evaluated. Water loss control technologies therefore should be considered in GHG abatement portfolios for utilities and policy makers.

  1. Assessing the effects of noise abatement measures on health risks: A case study in Istanbul

    Energy Technology Data Exchange (ETDEWEB)

    Ongel, Aybike, E-mail: aybike.ongel@eng.bahcesehir.edu.tr [Bahcesehir University, Department of Civil Engineering, Istanbul 34353 (Turkey); Sezgin, Fatih, E-mail: fatih.sezgin@ibb.gov.tr [Istanbul Metropolitan Municipality, Environmental Protection Agency, Istanbul 34169 (Turkey)

    2016-01-15

    In recent decades, noise pollution caused by industrialization and increased motorization has become a major concern around the world because of its adverse effects on human well-being. Therefore, transportation agencies have been implementing noise abatement measures in order to reduce road traffic noise. However, limited attention is given to noise in environmental assessment of road transportation systems. This paper presents a framework for a health impact assessment model for road transportation noise emissions. The model allows noise impacts to be addressed with the health effects of air pollutant and greenhouse gas emissions from road transportation. The health damages assessed in the model include annoyance, sleep disturbance, and cardiovascular disease in terms of acute myocardial infarction. The model was applied in a case study in Istanbul in order to evaluate the change in health risks from the implementation of noise abatement strategies. The noise abatement strategies evaluated include altering pavement surfaces in order to absorb noise and introducing speed limits. It was shown that significant improvements in health risks can be achieved using open graded pavement surfaces and introducing speed limits on highways. - Highlights: • Transportation noise has a significant effect on health. • Noise should be included in the environmental assessment of transportation systems. • Traffic noise abatement measures include noise reducing pavements and speed limits. • Noise abatement measures help reduce the health risks of transportation noise. • Speed limit reduction on uncongested roads is an effective way to reduce health risks.

  2. Emission abatement: Untangling the impacts of the EU ETS and the economic crisis

    International Nuclear Information System (INIS)

    Bel, Germà; Joseph, Stephan

    2015-01-01

    In this study we use historical emission data from installations under the European Union Emissions Trading System (EU ETS) to evaluate the impact of this policy on greenhouse gas emissions during the first two trading phases (2005–2012). As such the analysis seeks to disentangle two causes of emission abatement: that attributable to the EU ETS and that attributable to the economic crisis that hit the EU in 2008/09. To do so, we use a dynamic panel data approach. Our results suggest that, by far, the biggest share of abatement was attributable to the effects of the economic crisis. This finding has serious implications for future policy adjustments affecting core elements of the EU ETS, including the distribution of EU emission allowances. - Highlights: • We untangle the effects of the EU ETS from those of the economic crisis on industrial emission abatement. • The empirical analysis uses verified emission data instead of estimated emission data. • Abatement of emissions in EU in the last years has been mainly due to the impact of the economic crisis. • Low level of abatement attributable to the EU ETS suggests that important changes must be made in environmental policy

  3. Working Group 'Air pollution abatement' of the University of Stuttgart -ALS. Annual report 1990

    International Nuclear Information System (INIS)

    1991-01-01

    Despite considerable efforts for air pollution abatement - examples are here desulphurization and nitrogen removal in power and large combustion plants as well as catalytic converters for automobiles there are still many problems to solve. Many small and medium-size companies still have to reduce production-related pollutant emissions, traffic still is a major source of pollutants. Air pollution abatement in the new Federal states and other Eastern European countries is a particularly urgent task and reductions of CO 2 emissions from energy production processes with fossil fuels are not least a great challenge. Apart from industry, legislation and administration especially science is called upon to find solutions to these problems. The university of Stuttgart takes up the challenge. Numerous institutes - 17 of 8 faculties -united in the working group ''air pollution abatement'' of the university of Stuttgart which carries out in interdisciplinary cooperation research work in the area of air pollution abatement. In this annual report activities of individual member states institutes in the area of air pollution abatement (fields of study, current research projects, cooperations and publications in 1991) as well as joint projects are presented. (orig./KW) [de

  4. Abatement of waste gases and water during the processes of semiconductor fabrication.

    Science.gov (United States)

    Wen, Rui-mei; Liang, Jun-wu

    2002-10-01

    The purpose of this article is to examine the methods and equipment for abating waste gases and water produced during the manufacture of semiconductor materials and devices. Three separating methods and equipment are used to control three different groups of electronic wastes. The first group includes arsine and phosphine emitted during the processes of semiconductor materials manufacture. The abatement procedure for this group of pollutants consists of adding iodates, cupric and manganese salts to a multiple shower tower (MST) structure. The second group includes pollutants containing arsenic, phosphorus, HF, HCl, NO2, and SO3 emitted during the manufacture of semiconductor materials and devices. The abatement procedure involves mixing oxidants and bases in an oval column with a separator in the middle. The third group consists of the ions of As, P and heavy metals contained in the waste water. The abatement procedure includes adding CaCO3 and ferric salts in a flocculation-sedimentation compact device equipment. Test results showed that all waste gases and water after the abatement procedures presented in this article passed the discharge standards set by the State Environmental Protection Administration of China.

  5. Marginal abatement cost curves for policy recommendation – A method for energy system analysis

    International Nuclear Information System (INIS)

    Tomaschek, Jan

    2015-01-01

    The transport sector is seen as one of the key factors for driving future energy consumption and greenhouse gas (GHG) emissions. In order to rank possible measures marginal abatement cost curves have become a tool to graphically represent the relationship between abatement costs and emission reduction. This paper demonstrates how to derive marginal abatement cost curves for well-to-wheel GHG emissions of the transport sector considering the full energy provision chain and the interlinkages and interdependencies within the energy system. Presented marginal abatement cost curves visualize substitution effects between measures for different marginal mitigation costs. The analysis makes use of an application of the energy system model generator TIMES for South Africa (TIMES-GEECO). For the example of Gauteng province, this study exemplary shows that the transport sector is not the first sector to address for cost-efficient reduction of GHG emissions. However, the analysis also demonstrates that several options are available to mitigate transport related GHG emissions at comparable low marginal abatement costs. This methodology can be transferred to other economic sectors as well as to other regions in the world to derive cost-efficient GHG reduction strategies

  6. Greenhouse Gas Abatement with Distributed Generation in California's Commercial Buildings

    International Nuclear Information System (INIS)

    Stadler, Michael; Marnay, Chris; Cardoso, Goncalo; Megel, Olivier; Siddiqui, Afzal; Lai, Judy

    2009-01-01

    Lawrence Berkeley National Laboratory (LBL) is working with the California Energy Commission (CEC) to determine the role of distributed generation (DG) in greenhouse gas reductions. The impact of DG on large industrial sites is well known, and mostly, the potentials are already harvested. In contrast, little is known about the impact of DG on commercial buildings with peak electric loads ranging from 100 kW to 5 MW. We examine how DG with combined heat and power (CHP) may be implemented within the context of a cost minimizing microgrid that is able to adopt and operate various smart energy technologies, such as thermal and photovoltaic (PV) on-site generation, heat exchangers, solar thermal collectors, absorption chillers, and storage systems. We use a mixed-integer linear program (MILP) that has the minimization of a site's annual energy costs as objective. Using 138 representative commercial sites in California (CA) with existing tariff rates and technology data, we find the greenhouse gas reduction potential for California's commercial sector. This paper shows results from the ongoing research project and finished work from a two year U.S. Department of Energy research project. To show the impact of the different technologies on CO2 emissions, several sensitivity runs for different climate zones within CA with different technology performance expectations for 2020 were performed. The considered sites can contribute between 1 Mt/a and 1.8 Mt/a to the California Air Resources Board (CARB) goal of 6.7Mt/a CO2 abatement potential in 2020. Also, with lower PV and storage costs as well as consideration of a CO2 pricing scheme, our results indicate that PV and electric storage adoption can compete rather than supplement each other when the tariff structure and costs of electricity supply have been taken into consideration. To satisfy the site's objective of minimizing energy costs, the batteries will be charged also by CHP systems during off-peak and mid-peak hours and

  7. FUEL/CARBON PRICE VS. ABATEMENT TECHNOLOGY IN FREIGHT TRANSPORT

    Directory of Open Access Journals (Sweden)

    Eugen Ferdinand Spangenberg

    2017-12-01

    Full Text Available The current situation is the exponential increase in greenhouse gases (GHG, which is mainly caused by industrial and transport activities. The recent Paris agreement in 2015 (Framework Convention on Climate Change COP21, UNFCCC made it clear to everyone that CO2 emissions are to be limited in all areas of life. Alternative fuels with a lower environmental impact than carbon (CO2 emissions are hard to find if the overall footprint is to be taken into account. Nevertheless, there are some fuels that have less impact on climate change. One the other hand, the production of biofuels is a controversial matter, although it is a viable alternative to emissions reduction. CNG or LNG-powered vehicles are also better in terms of environmental pollution, but are hardly better with regard to CO2 impact when a Life Cycle Assessment (LCA is carried out. LNG (liquid natural gas, for example, is the future fuel in the maritime sector because of the stricter environmental regulations (SOx,NOx in the shipping industry. The battery-powered vehicle is another example of an environmentally friendly solution. The afore-mentioned measures can be considered as “abatement“ necessary in order to limit CO2 impact. The study shows that there are significant differences in the environmental impact between transport systems and the corresponding drive-system or associated energy base. The polluter should pay, which is a common basic principle in economic research. The Emission Trading Scheme (ETS has been introduced in order to ensure a reduction in CO2 output – emissions come with a price tag. An overall view is necessary, both en-vironmental and economic impact must be reconciled (cf. Spangenberg - TQI. The future viability of the transport system as we know it may change significantly over time if new environmental requirements or e.g. CO2 taxes or ETS are introduced in the freight sector. The abatement of CO2 should be effected primarily through technological

  8. Terceirização de Serviços em Hotéis: Um Estudo Comparativo de Caso

    Directory of Open Access Journals (Sweden)

    Tomas Sparano Martins

    2014-07-01

    Full Text Available Este estudo discute o processo de terceirização em dois tipos de hotéis, um independente e um de rede. Especificamente, o objetivo deste estudo foi verificar por que os hotéis terceirizam seus serviços e atividades, e como ocorre o processo de terceirização na perspectiva das capacidades dinâmicas. Para tanto realizou-se um estudo qualitativo, comparativo de casos, utilizando a técnica da análise de conteúdo do tipo categorial.  Os resultados mostram que as decisões das terceirizações foram motivadas principalmente por razões financeiras, tais como a possibilidade de redução de custos e a melhoria do desempenho financeiro. Também se destacou como razões para a terceirização no hotel de rede a existência de fornecedor especializado, o que sugere a existência de uma estratégia voltada para a busca de recursos externos, como forma de integrar e complementar recursos. Com relação ao processo de decisão da terceirização, observou-se que processos formalizados são adotados pelo hotel pertencente a uma rede. O hotel independente adota processos mais informais na decisão da terceirização. Por fim, variáveis ambientais, crise financeira e a gripe H1N1, não influenciaram o processo de terceirização nos hotéis.

  9. Estudo comparativo de antieméticos e suas associações, na prevenção de náuseas e vômitos pós-operatórios, em pacientes submetidas a procedimentos cirúrgicos ginecológicos Estudio comparativo de antieméticos y sus asociaciones, en la prevención de náusea y vómito postoperatorios, en pacientes sometidas a procedimientos quirúrgicos ginecológicos Comparative study of anti-emetics and their association, in the prevention of postoperative nausea and vomiting in patients undergoing gynecologic surgeries

    Directory of Open Access Journals (Sweden)

    Taylor Brandão Schnaider

    2008-12-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A profilaxia de náuseas e vômitos pós-operatórios foi objeto de muitos estudos. O objetivo desta pesquisa foi comparar antieméticos e associações na prevenção de náuseas e vômitos pós-operatórios. MÉTODO: Setenta pacientes, ASA I e II, foram submetidas a procedimentos cirúrgicos ginecológicos, sob bloqueio peridural associado à anestesia geral. No Grupo Metoclopramida (GM, administrou-se 20 mg; no Grupo Dexametasona (GDe, injetou-se 8 mg; no Grupo Droperidol (GDr administrou-se 1,25 mg; no Grupo Ondansetron (GO injetou-se 8 mg; no Grupo Dexametasona-Ondansetron (GDeO administrou-se, respectivamente, 8 mg e 4 mg; no Grupo Droperidol-Ondansetron (GDrO injetou-se 1,25 mg e 4 mg; no Grupo Dexametasona-Droperidol-Ondansetron (GDeDrO administrou-se 8 mg, 0,625 mg e 4 mg. A presença de náuseas e vômitos foi observada nos momentos de 6, 12, 24 e 36 horas após o término do ato operatório. RESULTADOS: A incidência total de episódios de náuseas foi de quatro no GDeDrO, seis no GO, seis no GDrO, 11 no GDe, 11 no GDeO, 18 no GM e 22 no GDr. Aplicando-se o teste do Qui-quadrado ou o teste de Fisher, ocorreu diferença estatística significativa entre o GDr e os grupos GDe, GDO, GDrO, GDeO, GDeDrO; entre o GM e os grupos GO, GDrO e GDeDrO; entre o GDeO e o grupo GDeDrO. A incidência total de episódios de vômitos foi de três no GO, três no GDeDrO, seis no GDrO, sete no GDe, sete no GDeO, desz no GDr e 13 no G. Verificou-se diferença estatística significativa entre o GDr e os grupos GO e GDeDrO; entre o GM e os grupos GO e GDeDrO. CONCLUSÕES: A associação dexametasona-droperidol-ondansetron e o ondansetron foram mais eficazes na profilaxia de náuseas e vômitos.JUSTIFICATIVA Y OBJETIVOS: La profilaxis de náusea y vómito postoperatorios fue objeto de muchos estudios. El objetivo de esta investigación fue comparar antieméticos y asociaciones en la prevención de náusea y vómito postoperatorios

  10. Benefits from restoring wetlands for nitrogen abatement: A case study of Gotland

    International Nuclear Information System (INIS)

    Gren, I.M.

    1992-01-01

    The values of nitrogen abatement by measures involving restoration of wetlands, sewage treatment plants and agriculture are calculated and compared. The analytical results show that the value of wetlands is likely to exceed the values of other measures due to the multi-functionality of wetlands and their self-organizing ability. The multi-functionality implies that, in addition to nitrogen abatement, other outputs like buffering of water and biodiversity are produced and the self-organizing feature reduces the rate at which future values of outputs are discounted. According to the empirical results applied to Gotland, a Swedish island in the Baltic with high concentrations of nitrate in the ground water, the imputed value of wetlands exceeds the corresponding values of the other nitrogen abatement measures by several hundred per cent. 21 refs, 6 tabs

  11. Estimating the National Carbon Abatement Potential of City Policies: A Data-Driven Approach

    Energy Technology Data Exchange (ETDEWEB)

    O' Shaughnessy, Eric [National Renewable Energy Lab. (NREL), Golden, CO (United States); Heeter, Jenny [National Renewable Energy Lab. (NREL), Golden, CO (United States); Keyser, David [National Renewable Energy Lab. (NREL), Golden, CO (United States); Gagnon, Pieter [National Renewable Energy Lab. (NREL), Golden, CO (United States); Aznar, Alexandra [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2016-10-01

    Cities are increasingly taking actions such as building code enforcement, urban planning, and public transit expansion to reduce emissions of carbon dioxide in their communities and municipal operations. However, many cities lack the quantitative information needed to estimate policy impacts and prioritize city actions in terms of carbon abatement potential and cost effectiveness. This report fills this research gap by providing methodologies to assess the carbon abatement potential of a variety of city actions. The methodologies are applied to an energy use data set of 23,458 cities compiled for the U.S. Department of Energy City Energy Profile tool. The analysis develops a national estimate of the carbon abatement potential of realizable city actions in six specific policy areas encompassing the most commonly implemented city actions. The results of this analysis suggest that, in aggregate, cities could reduce nationwide carbon emissions by about 210 million metric tons of carbon dioxide (MMT CO2) per year in a 'moderate abatement scenario' by 2035 and 480 MMT CO2/year in a 'high abatement scenario' by 2035 through these common actions typically within a city's control in the six policy areas. The aggregate carbon abatement potential of these specific areas equates to a reduction of 3%-7% relative to 2013 U.S. emissions. At the city level, the results suggest the average city could reduce carbon emissions by 7% (moderate) to 19% (high) relative to current city-level emissions. In the context of U.S. climate commitments under the 21st session of the Conference of the Parties (COP21), the estimated national abatement potential of the city actions analyzed in this report equates to about 15%-35% of the remaining carbon abatement necessary to achieve the U.S. COP21 target. Additional city actions outside the scope of this report, such as community choice aggregation (city-level purchasing of renewable energy), zero energy districts, and multi

  12. Gênero e outras variáveis que influenciam na procrastinação acadêmica

    Directory of Open Access Journals (Sweden)

    Somers, Patricia

    2008-01-01

    Full Text Available A procrastinação acadêmica é um grande problema para estudantes universitários, especialmente nos Estados Unidos. Este artigo discute teorias de motivação e analisa a investigação sobre os fatores, incluindo gênero e cultura, que podem influenciar na procrastinação. Um conjunto abrangente e comparativo de estudos é recomendado

  13. Modeling and experimental validation of TCE abatement and ozone formation with non thermal plasma

    OpenAIRE

    Vandenbroucke, Arne; Aerts, Robby; Morent, Rino; De Geyter, Nathalie; Bogaerts, Annemie; Leys, Christophe

    2012-01-01

    In this study, the formation of ozone and the abatement of trichloroethylene (TCE) with non thermal plasma was experimentally and theoretically investigated. The model predicts that the ozone formation increases with the energy deposition and decreases with the relative humidity (RH) of the air, which is qualitatively in agreement with experimental data. For an energy deposition of 0.136 J/cm³, the abatement of 1000 ppm TCE in air with 5 % RH is dominated by atomic oxygen and to a lesser exte...

  14. Water Pollution abatement programme, The Czech republic Pollution abatement analysis and strengthening of water resources management, Odra River Catchment, phase II

    OpenAIRE

    Dagestad, K.; Ratnaweera, H.; Ibrekk, H.O.; Hansen, J.H.; Tridlica, L.; Brezina, P.; Skacel, A.

    1995-01-01

    Odra river is extremely polluted by organic matter, nitrates, ammonia, phosphorus, bacteria, particles, heavy metals and other micro pollutants from municipalities, industries and agriculture. The poor water quality severely affects the ecology and represents a risk to human health. The water has a very limited value of use. This report presents an abatement programme with both technical and accompanying measures. In order to identify the major polluters several multi criteria analysis have b...

  15. Zeolite ZSM5 catalysts for abatement of nitrogen oxide

    Energy Technology Data Exchange (ETDEWEB)

    Ganemi, Bager

    1999-07-01

    Airborne pollutants from the combustion of fossil fuels are a global problem. Emission of nitrogen oxides (NO{sub x}) is increasing with the worldwide increase in the use of energy. Atmospheric and photochemical reactions link nitrogen oxides to hydrocarbons and tropospheric ozone. The emission of NO{sub x} has to be tackled urgently in order to limit the harmful effects of anthropogenic activity on the environment. The subject of this thesis is catalytic nitrogen oxide abatement through direct decomposition and reduction by methane over ion-exchanged zeolite ZSM5. The work covers catalytic conversion and surface intermediates, including correlations with the level of exchanged Cu{sup 2+} cations and Ni{sup 2+} or Pd{sup 2+} co-cations. Special attention is given to the aluminium content of the support and changes in structural parameters. It was found that NO{sub x} conversion over cation-exchanged ZSM5 is strongly influenced by the ion-exchange procedure and by the above material parameters. Characterization of Cu-ZSM5 reveals that approximately two molecules of water per Cu{sup 2+} ion desorb at temperatures between 150 and 350 Deg C, in addition to the conventional dehydration at lower temperatures. The desorbed water comes from the decomposition of Cu(OH){sub 2}. Decomposition of hydroxylated copper ions results in the formation Of Cu{sup 2+}-O-Cu{sup 2+} dimers, which are suggested to be the active sites for catalytic decomposition of NO. Acid sites are important for the dispersion of copper ions on the catalyst surface. Acid sites are also important for the interaction between copper species and the zeolite. Increased acidity leads to a stronger interaction between the exchanged cation and the framework, i.e. the exchanged cations become more resistant to mobility. The stronger bond between the exchanged cations and lattice oxygen also prevents dealumination of the catalyst and decreases the thermal expansion at higher temperatures. The temperature of

  16. Tobacco litter costs and public policy: a framework and methodology for considering the use of fees to offset abatement costs.

    Science.gov (United States)

    Schneider, John E; Peterson, N Andrew; Kiss, Noemi; Ebeid, Omar; Doyle, Alexis S

    2011-05-01

    Growing concern over the costs, environmental impact and safety of tobacco product litter (TPL) has prompted states and cities to undertake a variety of policy initiatives, of which litter abatement fees are part. The present work describes a framework and methodology for calculating TPL costs and abatement fees. Abatement is associated with four categories of costs: (1) mechanical and manual abatement from streets, sidewalks and public places, (2) mechanical and manual abatement from storm water and sewer treatment systems, (3) the costs associated with harm to the ecosystem and harm to industries dependent on clean and healthy ecosystems, and (4) the costs associated with direct harm to human health. The experiences of the City of San Francisco's recently proposed tobacco litter abatement fee serve as a case study. City and municipal TPL costs are incurred through manual and mechanical clean-up of surfaces and catchment areas. According to some studies, public litter abatement costs to US cities range from US$3 million to US$16 million. TPL typically comprises between 22% and 36% of all visible litter, implying that total public TPL direct abatement costs range from about US$0.5 million to US$6 million for a city the size of San Francisco. The costs of mitigating the negative externalities of TPL in a city the size of San Francisco can be offset by implementing a fee of approximately US$0.20 per pack. Tobacco litter abatement costs to cities can be substantial, even when the costs of potential environmental pollution and tourism effects are excluded. One public policy option to address tobacco litter is levying of fees on cigarettes sold. The methodology described here for calculating TPL costs and abatement fees may be useful to state and local authorities who are considering adoption of this policy initiative.

  17. Influência da Idade de Abate e da Castração nas Qualidades Físico-Químicas, Sensoriais e Aromáticas da Carne Caprina

    Directory of Open Access Journals (Sweden)

    Marta Suely Madruga

    2002-06-01

    Full Text Available Grupos de caprinos mestiços castrados e inteiros foram abatidos com idades de 175, 220, 265 e 310 dias. Os efeitos da castração e idade de abate nas qualidades físico-químicas, sensoriais e aromáticos da carne caprina foi pesquisado. O efeito castração foi observado apenas para o conteúdo de cálcio, no entanto a idade de abate apresentou um efeito significativo nos teores de umidade, proteína, cálcio, ferro e pH. Os fatores idade de abate e castração não apresentaram efeito significativo nos percentuais de fosfolipídeos porém, a idade de abate afetou os percentuais de colesterol. Caprinos castrados apresentaram maior percentual de ácidos graxos insaturados e, conseqüentemente, maior relação PUFA/SFA. Os ácidos graxos foram afetados significativamente pela castração. Não foram observadas variações nos percentuais dos ácidos graxos saturados e insaturados da carne caprina de animais abatidos com diferentes idades. O fator idade de abate apresentou maior efeito nos atributos sensoriais analisados do que o fator castração. Nos extratos da carne caprina foram identificados um total de cento e oito voláteis, sendo estes: 41 hidrocarbonetos alifáticos, 12 hidrocarbonetos alicíclicos, 19 aldeídos, 9 compostos benzênicos, 9 álcoois, 7 cetonas, 4 compostos sulfurados, 2 terpenoídes, 2 ésteres e 3 outros compostos. Os extratos da carne de caprinos castrados continham maior número de compostos voláteis do que os extratos de animais inteiros. O fator idade de abate foi o parâmetro que mais afetou as características físico-químicas e sensoriais da carne caprina. O fator castração afetou diretamente a produção de voláteis.

  18. Cost-effective analysis of carbon abatement options in China's electricity sector

    NARCIS (Netherlands)

    Zhang, Z.X.

    1998-01-01

    This article attempts to shed light on technological aspects of carbon abatement in China's power industry and is thus devoted to satisfying electricity planning requirements in the CO2 context. To that end, a technology-oriented dynamic optimization model for power system expansion planning has

  19. Collateral benefits and hidden hazards of soil arsenic during abatement assessment of residential lead hazards

    International Nuclear Information System (INIS)

    Elless, M.P.; Ferguson, B.W.; Bray, C.A.; Patch, S.; Mielke, H.; Blaylock, M.J.

    2008-01-01

    Abatement of soil-lead hazards may also reduce human exposure to other soil toxins, thereby achieving significant collateral benefits that are not accounted for today. This proposition was tested with the specific case of soil-arsenic, where 1726 residential soil samples were collected and analyzed for lead and arsenic. The study found that these two toxins coexisted in most samples, but their concentrations were weakly correlated, reflecting the differing sources for each toxin. Collateral benefits of 9% would be achieved during abatement of the lead-contaminated soils having elevated arsenic concentrations. However, a hidden hazard of 16% was observed by overlooking elevated arsenic concentrations in soils having lead concentrations not requiring abatement. This study recommends that soil samples collected under HUD programs should be collected from areas of lead and arsenic deposition and tested for arsenic as well as lead, and that soil abatement decisions consider soil-arsenic as well as soil-lead guidelines. - Coexistence of arsenic at elevated concentrations with lead in residential soils undergoing lead hazard assessment is often overlooked, providing either collateral benefits or hidden hazards

  20. Sulphur dioxide and nitrogen oxides in industrial waste gases: emission, legislation and abatement

    International Nuclear Information System (INIS)

    Velzen, D. van

    1991-01-01

    Contains the proceedings of a Eurocourse held in Ispra in September 1990 concerning SO 2 and NO x emission, abatement and legislation. Aspects covered include: emission sources and quantities; atmospheric chemistry and dispersion of pollutants; European Community air pollution legislation; air pollution control technologies; costs of desulphurization and denoxing; and the situation in the USA and Japan. Individual papers are abstracted separately

  1. The Copenhagen Accord: abatement costs and carbon prices resulting from the submissions

    International Nuclear Information System (INIS)

    Elzen, Michel G.J. den; Hof, Andries F.; Mendoza Beltran, Angelica; Grassi, Giacomo; Roelfsema, Mark; Ruijven, Bas van; Vliet, Jasper van; Vuuren, Detlef P. van

    2011-01-01

    As part of the Copenhagen Accord, individual countries have submitted greenhouse gas reduction proposals for the year 2020. This paper analyses the implications for emission reductions, the carbon price, and abatement costs of these submissions. The submissions of the Annex I (industrialised) countries are estimated to lead to a total reduction target of 12-18% below 1990 levels. The submissions of the seven major emerging economies are estimated to lead to an 11-14% reduction below baseline emissions, depending on international (financial) support. Global abatement costs in 2020 are estimated at about USD 60-100 billion, assuming that at least two-thirds of Annex I emission reduction targets need to be achieved domestically. The largest share of these costs are incurred by Annex I countries, although the costs as share of GDP are similar for Annex I as a group and the seven emerging economies as a group, even when assuming substantial international transfers from Annex I countries to the emerging economies to finance their abatement costs. If the restriction of achieving two-thirds of the emission reduction target domestically is abandoned, it would more than double the international carbon price and at the same time reduce global abatement costs by almost 25%.

  2. Technical efficiency and CO2 abatement policies in the Dutch glasshouse industry

    NARCIS (Netherlands)

    Oude Lansink, A.G.J.M.

    2003-01-01

    This paper develops a short-run microeconomic simulation model of the Dutch glasshouse industry in order to investigate the relation between technical efficiency and marginal abatement costs of CO2 emission. The model is also used to determine the effects of an emission tax and systems of tradable

  3. The cost of carbon abatement through community forest management in Nepal Himalaya

    NARCIS (Netherlands)

    Karky, B.S.; Skutsch, Margaret

    2010-01-01

    This paper estimates the economic returns to carbon abatement through biological sequestration in community managed forest under future REDD policy, and compares these for three possible management scenarios. For the estimation, the research relies on forest inventory data together with other

  4. Developing a Metric for the Cost of Green House Gas Abatement

    Science.gov (United States)

    2017-02-28

    The authors introduce the levelized cost of carbon (LCC), a metric that can be used to evaluate MassDOT CO2 abatement projects in terms of their cost-effectiveness. The study presents ways in which the metric can be used to rank projects. The data ar...

  5. Non-thermal plasmas for non-catalytic and catalytic VOC abatement

    International Nuclear Information System (INIS)

    Vandenbroucke, Arne M.; Morent, Rino; De Geyter, Nathalie; Leys, Christophe

    2011-01-01

    Highlights: → We review the current status of catalytic and non-catalytic VOC abatement based on a vast number of research papers. → The underlying mechanisms of plasma-catalysis for VOC abatement are discussed. → Critical process parameters that determine the influent are discussed and compared. - Abstract: This paper reviews recent achievements and the current status of non-thermal plasma (NTP) technology for the abatement of volatile organic compounds (VOCs). Many reactor configurations have been developed to generate a NTP at atmospheric pressure. Therefore in this review article, the principles of generating NTPs are outlined. Further on, this paper is divided in two equally important parts: plasma-alone and plasma-catalytic systems. Combination of NTP with heterogeneous catalysis has attracted increased attention in order to overcome the weaknesses of plasma-alone systems. An overview is given of the present understanding of the mechanisms involved in plasma-catalytic processes. In both parts (plasma-alone systems and plasma-catalysis), literature on the abatement of VOCs is reviewed in close detail. Special attention is given to the influence of critical process parameters on the removal process.

  6. Optimal Coordination Strategy of Regional Vertical Emission Abatement Collaboration in a Low-Carbon Environment

    Directory of Open Access Journals (Sweden)

    Daming You

    2018-02-01

    Full Text Available This study introduces a time factor into a low-carbon context, and supposes the contamination control state of local government and the ability of polluting enterprise to abate emissions as linear increasing functions in a regional low-carbon emission abatement cooperation chain. The local government effectuates and upholds the low-carbon development within the jurisdiction that is primarily seeking to transform regional economic development modes, while the polluting enterprise abates the amounts of emitted carbon in the entire period of product through simplifying production, facilitating decontamination, and adopting production technology, thus leading to less contamination. On that basis, we infer that the coordinated joint carbon reduction model and two decentralization contracts expound the dynamic coordination strategy for a regional cooperation chain in terms of vertical carbon abatement. Furthermore, feedback equilibrium strategies that are concerned with several diverse conditions are compared and analyzed. The main results show that a collaborative centralized contract is able to promote the regional low-carbon cooperation chain in order to achieve a win–win situation in both economic and environmental performance. Additionally, the optimal profits of the entire regional low-carbon cooperation channel under an integration scenario evidently outstrip that of two non-collaborative decentralization schemes. Eventually, the validity of the conclusions is verified with a case description and numerical simulation, and the sensitivity of the relevant parameters is analyzed in order to lay a theoretical foundation and thus facilitate the sustainable development of a regional low-carbon environment.

  7. Guidelines for Assessment and Abatement of Asbestos-Containing Materials in Buildings.

    Science.gov (United States)

    Pielert, James H.; Mathey, Robert G.

    This report presents guidelines, based on available information, for the assessment and abatement of asbestos-containing materials in buildings. Section 1 provides background information on the history and use of asbestos-containing products in buildings, the characteristics of asbestos fibers, products and materials containing asbestos, and…

  8. Valuation of marginal CO2 abatement options for electric power plants in Korea

    International Nuclear Information System (INIS)

    Park, Hojeong; Lim, Jaekyu

    2009-01-01

    The electricity generation sector in Korea is under pressure to mitigate greenhouse gases as directed by the Kyoto Protocol. The principal compliance options for power companies under the cap-and-trade include the application of direct CO 2 emission abatement and the procurement of emission allowances. The objective of this paper is to provide an analytical framework for assessing the cost-effectiveness of these options. We attempt to derive the marginal abatement cost for CO 2 using the output distance function and analyze the relative advantages of emission allowance procurement option as compared to direct abatement option. Real-option approach is adopted to incorporate emission allowance price uncertainty. Empirical result shows the marginal abatement cost with an average of Euro 14.04/ton CO 2 for fossil-fueled power plants and confirms the existence of substantial cost heterogeneity among plants which is sufficient to achieve trading gains in allowance market. The comparison of two options enables us to identify the optimal position of the compliance for each plant. Sensitivity analyses are also presented with regard to several key parameters including the initial allowance prices and interest rate. The result of this paper may help Korean power plants to prepare for upcoming regulations targeted toward the reduction of domestic greenhouse gases.

  9. Award for Distinguished Professional Contributions to Applied Research: Luciano L'Abate

    Science.gov (United States)

    American Psychologist, 2009

    2009-01-01

    Luciano L'Abate, recipient of the Award for Distinguished Professional Contributions to Applied Research, contributed to applied research through the introduction of the laboratory method in clinical psychology assessment and intervention, leading to the development of the first automated playroom, linking play therapy with research in child…

  10. Inefficient national environmental regulation as a signal of high abatement costs

    Energy Technology Data Exchange (ETDEWEB)

    Steiner, U.

    1997-12-31

    This paper analyses the importance of informational asymmetries in international environmental regulation by use of a game theoretic approach of signaling games. More specific it analysis whether it is possible for a government to try to extract higher compensation in an international unidirectoral environmental problem. This may be possible when the national environmental regulation carries a signal of the cost of the regulated industry. In this case the government e.g. by means of inefficient environmental regulation on a national level may try to signal high abatement costs. In spite of the fact that many international environmental problems seem to be solvable by the use of financial payments there are only few examples that compensation payment arrangements have been implemented. As many countries and especially many polluting firms possess better information about abatement costs than the countries that receive the pollution, it is worthwhile to include asymmetric information. Consequently, this paper analyses whether the introduction of asymmetric information about abatement costs may bring forward incentives to misrepresent the true abatement cost in order to capture more compensation. If these incentives turn out to be present, it may explain some of the suspicion against using financial payment in order to induce other countries to join an agreement. The analysis shows that it may indeed be the case that the expected gain from cheating is so large that it gives incentives to use an inefficient national environmental policy. (au) 13 refs.

  11. Sustainable noise abatement along motorways in Germany – an empirical study in the municipality Frasdorf (Bavaria

    Directory of Open Access Journals (Sweden)

    Jürgen Breuste

    2014-09-01

    Full Text Available As part of the planned expansion work of the motorway A8 between Rosenheim and Salzburg and the associated legal opportunity to develop new traffic noise protection measures, this study investigated properties of sustainable noise abatement in a community next to the A8. A two-stage empirical survey was conducted integrating a citizen and an expert Delphi survey. The results show that the noise from the motorway heavily affects the quality of life in health, economic and ecological respects. Sustainable noise abatement should take into consideration ecological and social aspects like landscape integration and contribution to local development due to the unique location of the municipality. Enclosed motorway canopies are particularly beneficial to meet these criteria. The costs for sustainable noise abatement measures should be weighted as less important; however, financial costs are crucial for the federal government due to the requirements of the Federal Pollution Control Act. Hence, residents and experts assume that noise barriers as the cheaper noise abatement measures will be implemented. However, the results of the study and the latest developments in the expansion plans suggest that the implementation of enclosed motorway canopies, which go beyond the legal requirements, is feasible through extensive citizen participation and community-specific planning.

  12. Estudo comparativo da freqüência da morte súbita inesperada por doença de Chagas, em Uberaba, nos anos de 1980 e 1990

    Directory of Open Access Journals (Sweden)

    Edison Reis Lopes

    1995-06-01

    Full Text Available Realizou-se estudo comparativo da freqüência e etiologia das mortes súbitas ocorridas no Município de Uberaba, Minas Gerais, em maiores de 15 anos de idade, nos anos de 1980 e de 1990, com o objetivo fundamental de analisar a freqüência atual do óbito súbito em nossa região e o eventual papel de medidas profiláticas e terapêuticas na morte súbita por doença de Chagas. Dos 1226 óbitos de 1980, 54 (4,4% foram súbitos e destes, 13 (24,1% etiologia atribuída à doença de Chagas. Em 1990foram pesquisados 1740 óbitos, dos quais 44 (2,5% foram súbitos; destes, somente 3 (6,8% devidos â tripanosomose cruzi. Os resultados indicam redução significativa na freqüência tanto da morte súbita em geral, como daquela devida à doença de Chagas, no ano de 1990, em relação ao de 1980, discutindo-se suas prováveis razões.

  13. Conjunto Internacional de Dados Mínimos de Enfermagem: estudo comparativo com instrumentos de uma clínica pediátrica

    Directory of Open Access Journals (Sweden)

    Daniela Karina Antão Marques

    2014-07-01

    Full Text Available Estudo descritivo e comparativo, desenvolvido a partir de dois históricos utilizados para a implementação da Sistematização da Assistência de Enfermagem em uma Clínica Pediátrica de um hospital escola. Objetivou-se comparar o Conjunto Internacional de Dados Mínimos de Enfermagem (i-NMDS com os dados contidos em históricos de enfermagem utilizados para aplicação do Processo de Enfermagem na área de Saúde da Criança e do Adolescente. Dos dezesseis elementos avaliados pertencentes à proposta do i-NMDS, o instrumento para adolescentes hospitalizados contemplou doze e o instrumento para crianças de 0 a 5 anos apresentou sete. Conclui-se que os históricos de enfermagem analisados não contemplam, na sua totalidade, os dados do i-NMDS. Sugere-se a necessidade de um aprimoramento de históricos, utilizando a linguagem padronizada de enfermagem para planejar a assistência, documentar as atividades, identificar e mensurar os resultados da prática.

  14. Estudio comparativo entre bibliotecas universitarias latinoamericanas y estadounidenses

    Directory of Open Access Journals (Sweden)

    Arenas Franco, María Luisa

    2002-06-01

    Full Text Available The paper presents the first results of a comparative study done by the Library System (SIBUC and the Industrial and System Engineering Department of the Pontificia Universidad Católica de Chile. The objective of the study is the development of indicators for University Libraries to compare themselves and to identify their relative position in relation to other peer or leader institutions at the national, regional and international level. With the collaboration of four Chilean and two Latin-American prestigious Universities data weal obtained. In adition, information regarding ten American Universities was obtained from the online version of US News. Nineteen indicators for the following three main areas: budget, relationship between resources/Faculty and Studens, and Efficiency on the use of resources were developed so that the institutions, for bench-marking purpose, are able to evaluate their own strategic position and to improve their weaknesses and maintain their strengths. Finally, benefits that can be obtained from the use of the nineteen indicators are stated for SIBUC, as well as for other Latin-American University Libraries.

    Se presentan los primeros resultrados de un estudio comparativo (benchmarking iniciado por el Sistema de Bibliotecas de la Pontificia Universidad Católica de Chile (SIBUC en conjunto con el Departamento de Ingeniería Industrial y de Sistemas de esta misma universidad. Su objetivo es el establecimiento de índices para bibliotecas universitarias, que les permitan a través del tiempo compararse e identificar su posición relativa respecto a otras instituciones pares o líderes en el ámbito nacional, latinoamericano e internacional. para ello, se contó con la colaboración en Chile de cuatro de sus principales universidades, en Latinoamérica de dos universidades de prestigio, y de estados Unidos se obtuvo a través de internet de diez universidades incluidas en ranking por la US News. El estudio arroj

  15. Selection of Sustainable Technology for VOC Abatement in an Industry: An Integrated AHP-QFD Approach

    Science.gov (United States)

    Gupta, Alok Kumar; Modi, Bharat A.

    2018-04-01

    Volatile organic compounds (VOCs) are universally present in global atmospheric pollutants. These VOCs are responsible for photo chemical reaction in atmosphere leading to serious harmful effects on human health and environment. VOCs are produced from both natural and man-made sources and may have good commercial value if it can be utilized as alternate fuel. As per data from US EPA, 15% of total VOC emissions are generated from surface coating industry but VOC concentration and exhaust air volume varies to a great extent and is dependent on processes used by industry. Various technologies are available for abatement of VOCs. Physical, Chemical and Biological technologies are available to remove VOCs by either recovery or destruction with many advantages and limitations. With growing environmental awareness and considering the resource limitations of medium and small scale industries, requirement of a tool for selecting appropriate techno economically viable solution for removal of VOCs from industrial process exhaust is envisaged. The aim of the present study is to provide management a tool to determine the overall effect of implementation of VOC abatement technology on business performance and VOC emissions. The primary purpose of this work is to outline a methodology to rate various VOC abatement technologies with respect to the constraint of meeting current and foreseeable future regulatory requirements, operational flexibility and Over All Economics Parameters considering conservation of energy. In this paper an integrated approach has been proposed to select most appropriate abatement technology strategically. Analytical hierarchy process and Quality function deployment have been integrated for Techno-commercial evaluation. A case study on selection of VOC abatement technology for a leading aluminium foil surface coating, lamination and printing facility using this methodology is presented in this study.

  16. Comparativo dos softwares de gerenciamento de referências bibliográficas: Mendeley, EndNote e Zotero

    Directory of Open Access Journals (Sweden)

    Eduardo Kazumi Yamakawa

    Full Text Available A elaboração de uma revisão bibliográfica confiável, a partir de trabalhos relevantes publicados anteriormente, é fundamental para evidenciar a originalidade e a contribuição científica dos trabalhos de pesquisa. Devido à grande quantidade de bases de dados e de publicações disponíveis, torna-se necessário utilizar ferramentas que auxiliem na gestão das referências bibliográficas de uma maneira fácil e padronizada. O objetivo deste artigo é examinar três softwares de gerenciamento bibliográfico utilizados com frequência por pesquisadores acadêmicos, são eles: Mendeley, EndNote e Zotero. Nesse sentido, buscou-se, em primeiro lugar, evidenciar seus principais benefícios e as possíveis dificuldades de utilização. Em segundo lugar, procurou-se comparar suas principais características por meio de uma pesquisa teórico-conceitual baseada em literatura especializada, o que permitiu utilizá-los e analisá-los de maneira crítica. Assim sendo, evidenciou-se as principais particularidades de cada software e foi elaborado um quadro comparativo entre os mesmos. Considerando as características analisadas nos três softwares, concluiu-se que todos, ao mesmo tempo em que facilitam o trabalho dos pesquisadores, possuem ferramentas que facilitam as buscas, a organização e a análise dos artigos.

  17. Fontes proteicas e idades de abate sobre a estrutura e ultraestrutura do intestino delgado de leitões desmamados

    Directory of Open Access Journals (Sweden)

    Maria Cristina Thomaz

    2011-10-01

    Full Text Available Foram realizados dois experimentos (experimento 1 - alimentação convencional e experimento 2 - alimentação das matrizes, a partir de 109 dias de gestação, na lactação e dos leitões lactentes com ração sem farelo de soja, com o objetivo de avaliar os efeitos de fontes proteicas (farelo de soja - FS, soja semi-integral extrusada - SSIE e produtos lácteos - PL sobre a morfologia intestinal de leitões abatidos aos 0,5 e 15 dias após a desmama. Foram utilizados 27 leitões, desmamados aos 25 dias de idade, sendo que em cada idade, nove leitões foram abatidos. Utilizou-se o delineamento em blocos ao acaso, em esquema fatorial 3 x 3 (três dietas x três idades de abate. Os resultados demonstraram que os animais recebendo FS apresentaram menores alturas das vilosidades e relação vilosidade:cripta, quando comparados àqueles que receberam SSIE ou PL, não havendo, entretanto, diferenças entre estes. A altura da vilosidade e a relação vilosidade:cripta não foram afetadas pela alimentação diferenciada das matrizes e dos leitões antes da desmama. A profundidade das criptas não foi afetada pelas dietas ou idades de abate, dentro de cada experimento, em nenhum dos segmentos estudados, sendo, no entanto, menor no duodeno e maior no jejuno e íleo dos animais do exp. 2, quando comparados àqueles do exp. 1. Concluiu-se que o FS afetou negativamente a altura das vilosidades e a relação vilosidade:cripta após a desmama; que a morfologia intestinal foi mais afetada aos cinco dias, mostrando sinais de recuperação aos 15 dias após a desmama e que a alimentação das matrizes não afetou a morfologia dos segmentos do intestino delgado.

  18. [Estimate the abatement rate of septic tank sewage outfall soil on nitrogen pollutants of typical farmer household sewage].

    Science.gov (United States)

    Zhou, Feng; Wang, Wen-Lin; Wang, Guo-Xiang; Ma, Jiu-Yuan; Wan, Yin-Jing; Tang, Xiao-Yan; Liang, Bin; Ji, Bin

    2013-10-01

    The surface soil on sewage outfall and effluent of farmer household septic tank were collected in situ from the typical region of plain river network areas in Taihu Lake Basin, and the typical rainfall (summer 30 mm . times-1, winter 5 mm times -1), temperature (summer 27 degrees C, winter 5 degrees C ) condition and pollutant load were artificial simulated by indoor simulation soil column experiments for estimating nitrogen abatement rate of rural sewage treated by the outfall soil and exploring the abatement rule in different seasons and weather process (7 days before the rain, 3 rainy days, 7 days after the rain). Results showed that: there was the significant difference (P 0. 05). Therefore, the TN, NH+4 -N abatement rate, NO-3 -N increase rate need to be divided by seasons, TN abatement rate, NO-3 -N increase rate of summer need to be divided by the weather process, which were 38.5% , - 25.0% , 46. 0% and 478. 1%, 913.8%, 382. 0% , before the rain, in rainy day, after the rain, respectively; while the NH+4 -N abatement rate of summer and the TN, NH+4 -N abatement rate, NO-3 -N increase rate of winter do not need to be divided by weather process, were 91.7% , 50.4% , 85.5% and 276.0% , respectively. In the summer, the TN abatement rate in different weather processes was not correlated with NH+4 -N abatement rate, but significantly negative correlated with NO-3 -N increase rate. In the winter, the stable accumulation of TN in soil was an important reason of the TN abatement rate which had no significant difference and kept a high level among different weather processes, and it was closely related to the stable accumulation of NH+4 -N in soil.

  19. Reatividade animal e indicadores fisiológicos de estresse: avaliação das suas relações com a qualidade final da carne bovina em distintos períodos de jejum pré-abate

    OpenAIRE

    MOURA, Sandra Vieira de

    2011-01-01

    Foi avaliada a influência de diferentes períodos de jejum pré-abate sobre a reatividade animal, indicadores fisiológicos de estresse e qualidade final da carne, considerando a glicose como potencial indicador de estresse. Foram utilizados 33 novilhos castrados, cruza Aberdeen Angus com aproximadamente 24 meses de idade, peso médio de 450 kg, com procedência, tempo e condições de viagem semelhantes, sendo abatidos em um frigorífico comercial na cidade de Pelotas RS. Os animais foram classifi...

  20. Avaliação da capacidade de produção de biofilmes e detecção da enzima KPC em Salmonella spp. isoladas de aviário e linha de abate de aves

    OpenAIRE

    Míriam Gonçalves Marquezini

    2015-01-01

    De acordo com a Food and Agriculture Organization of the United Nations (FAO, 2013), o consumo mundial de carne de frango tem aumentado de maneira significativa nas últimas décadas. Por outro lado, a preocupação dos produtores de alimentos, com a inocuidade de seus produtos também tem aumentado na mesma proporção. Durante as etapas da operação de abate de maneira geral, as contaminações cruzadas são as principais causas de disseminação de microrganismos patogênicos nos produtos obtidos e caus...

  1. Eletrocardiografia computadorizada em cães: estudo comparativo

    Directory of Open Access Journals (Sweden)

    Lídia S. Oliveira

    2013-07-01

    Full Text Available O método de eletrocardiografia computadorizada (ECG-C vem sendo crescentemente difundido na medicina veterinária, havendo atualmente diversas marcas e modelos de eletrocardiógrafos disponíveis no mercado. Diante da possibilidade de diferenças na sensibilidade e na reprodutibilidade das medidas obtidas nos traçados, o presente estudo teve como objetivo comparar os parâmetros eletrocardiográficos de cães, obtidos por dois sistemas. Foram avaliados dois diferentes softwares computadorizados, o Wincardio Micromed® (WIN e o modelo TEB ECGPC® (TEB. Quarenta e dois cães hígidos, de diferentes raças (Cocker Spaniel, Daschund, Labrador, Pinscher, Pit Bull Terrier Poodle, Schnauzer, Shit Tzu, Yorkshire e sem raça definida, machos e fêmeas e com idade entre 4 meses e 16 anos foram agrupados segundo o peso e examinados pelos dois sistemas. As medidas eletrocardiográficas dos diferentes traçados foram analisadas na derivação DII. Os resultados indicaram que o sistema TEB apresentou maior sensibilidade na obtenção das medidas de duração da onda P e do complexo QRS, enquanto o sistema WIN foi mais sensível para determinar as medidas de amplitude dos mesmos parâmetros. Os animais de maior porte (26-37kg apresentaram maior variância nas medidas de duração e amplitude de onda P e duração do complexo QRS em comparação aos cães de médio (14-25kg e pequeno (1-13kg porte. O achado de diferenças entre os sistemas testados deve ser levado em consideração ao se empregar os diversos equipamentos para diagnóstico por meio de ECG-C na rotina clínica, de modo a evitarem-se divergências na interpretação dos exames entre diferentes prestadores de serviços veterinários.

  2. Abatement costs of soil conservation in China's Loess Plateau: balancing income with conservation in an agricultural system.

    Science.gov (United States)

    Hou, Lingling; Hoag, Dana L K; Keske, Catherine M H

    2015-02-01

    This study proposes the use of marginal abatement cost curves to calculate environmental damages of agricultural systems in China's Loess Plateau. Total system costs and revenues, management characteristics and pollution attributes are imputed into a directional output distance function, which is then used to determine shadow prices and abatement cost curves for soil and nitrogen loss. Marginal abatement costs curves are an effective way to compare economic and conservation tradeoffs when field-specific data are scarce. The results show that sustainable agricultural practices can balance soil conservation and agricultural production; land need not be retired, as is current policy. Published by Elsevier Ltd.

  3. Bupivacaína racêmica a 0,5% e mistura com excesso enantiomérico de 50% (S75-R25 a 0,5% no bloqueio do plexo braquial para cirurgia ortopédica. Estudo comparativo Bupivacaína racémica a 0,5% y mezcla con exceso enantiomérico del 50% (S75-R25 a 0,5% en el bloqueo del plexo braquial para cirugía ortopédica. Estudio comparativo Comparative study of 0.5% racemic bupivacaine versus enantiomeric mixture (S75-R25 of 0.5% bupivacaine in brachial plexus block for orthopedic surgery

    Directory of Open Access Journals (Sweden)

    Roberto Tsuneo Cervato Sato

    2005-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: Com a finalidade de encontrar uma droga mais segura que a bupivacaína racêmica, vários estudos foram realizados com seus isômeros. Este estudo tem como objetivo avaliar a eficácia da mistura com excesso enantiomérico de 50% (MEE50% de bupivacaína (S75-R25 a 0,5% comparada a da bupivacaína racêmica a 0,5% no bloqueio do plexo braquial, em pacientes submetidos à cirurgia ortopédica de membros superiores. MÉTODO: Participaram deste estudo, aleatório e duplamente encoberto, 40 pacientes, com idade entre 18 e 90 anos, estado físico ASA I e II, submetidos à cirurgia ortopédica de membros superiores, distribuídos em dois grupos: Grupo R, que recebeu a solução de bupivacaína racêmica a 0,5%, e Grupo L, que recebeu a solução da mistura com excesso enantiomérico de 50% de bupivacaína (S75-R25 a 0,5%, ambas com epinefrina 1:200.000 e num volume de 0,6 mL.kg-1 (3 mg.kg-1, limitados a 40 mL. Foram investigadas as características motoras e/ou sensoriais de cada nervo envolvido (nervos musculocutâneo, radial, mediano, ulnar e cutâneo medial do antebraço, bem como a incidência de efeitos colaterais. RESULTADOS: Não houve diferença estatística significativa em relação aos aspectos demográficos. Os parâmetros hemodinâmicos foram semelhantes entre os grupos, mas a pressão arterial sistólica foi maior no Grupo R. Não houve diferença significativa em relação ao tempo necessário para atingir a maior intensidade dos bloqueios motor e sensitivo. Com uma exceção, a latência do bloqueio motor do grupo muscular inervado pelo n. ulnar foi maior no Grupo L (10,75 versus 14,25 minutos. CONCLUSÕES: Em ambos os grupos foram observados adequados bloqueios motor e sensitivo para a realização da cirurgia, com poucos efeitos colaterais, sugerindo que a mistura com excesso enantiomérico de 50% de bupivacaína (S75-R25 a 0,5% com epinefrina é segura e efetiva para o bloqueio do plexo braquial para

  4. Essays on the economics of energy markets. Security of supply and greenhouse gas abatement

    International Nuclear Information System (INIS)

    Dieckhoener, Caroline

    2013-01-01

    In summary, the presented thesis analyzes two distinct economic subjects: security of supply in natural gas markets and greenhouse gas abatement potentials in the residential heating market. These subjects considered both reflect key points in the triangle of energy policy and are both associated with transnational market failures within energy markets. The security of supply analyses in an intermeshed network are approached from a rather normative, top-down perspective of a social planner. On the contrary, the analyses of greenhouse gases emitted by households are positive analyses of consumer choices. The normative analyses of security of supply in natural gas markets and the positive analyses on greenhouse gas abatement in the residential heating market are organized in two parts of the thesis. 1. Normative analyses - Security of supply in natural gas markets: The two papers of the first part of the dissertation thesis are based on a normative approach with the European natural gas market and infrastructure model TIGER that allows for security of supply analyses. The general idea behind the modeling approach is based on the assumption of a social planner and finds an efficient utilization of the natural gas infrastructure. More precisely, the security of supply analyses conducted in the first part of the thesis refer to scenario simulations of disrupted supply routes in the European natural gas network. The effects of these security of supply scenarios on the usage of other infrastructure components, on marginal supply costs and disruptions to consumers are investigated. 2. Positive analyses of greenhouse gas abatement potentials - Econometric modeling of consumer choices and evaluation of public policies: The second part of the thesis includes two positive analyses which investigate household choices to derive greenhouse gas abatement potentials. In the residential heating market, the energy efficiency level exhibited and the type of energy carrier used are

  5. Essays on the economics of energy markets. Security of supply and greenhouse gas abatement

    Energy Technology Data Exchange (ETDEWEB)

    Dieckhoener, Caroline

    2013-02-01

    In summary, the presented thesis analyzes two distinct economic subjects: security of supply in natural gas markets and greenhouse gas abatement potentials in the residential heating market. These subjects considered both reflect key points in the triangle of energy policy and are both associated with transnational market failures within energy markets. The security of supply analyses in an intermeshed network are approached from a rather normative, top-down perspective of a social planner. On the contrary, the analyses of greenhouse gases emitted by households are positive analyses of consumer choices. The normative analyses of security of supply in natural gas markets and the positive analyses on greenhouse gas abatement in the residential heating market are organized in two parts of the thesis. 1. Normative analyses - Security of supply in natural gas markets: The two papers of the first part of the dissertation thesis are based on a normative approach with the European natural gas market and infrastructure model TIGER that allows for security of supply analyses. The general idea behind the modeling approach is based on the assumption of a social planner and finds an efficient utilization of the natural gas infrastructure. More precisely, the security of supply analyses conducted in the first part of the thesis refer to scenario simulations of disrupted supply routes in the European natural gas network. The effects of these security of supply scenarios on the usage of other infrastructure components, on marginal supply costs and disruptions to consumers are investigated. 2. Positive analyses of greenhouse gas abatement potentials - Econometric modeling of consumer choices and evaluation of public policies: The second part of the thesis includes two positive analyses which investigate household choices to derive greenhouse gas abatement potentials. In the residential heating market, the energy efficiency level exhibited and the type of energy carrier used are

  6. Estudio comparativo de los Lenguajes de Programación Algebráicos SQL 2005 y Oracle

    OpenAIRE

    García Díaz, Bertila Liduvina

    2013-01-01

    Estudio comparativo de los lenguajes de programación algebraicos SQL 2005 y ORACLE. El objetivo de esta investigación es realizar un estudio comparativo a nivel práctico de ambos Lenguajes algebraicos y profundizar en un tema que corresponde al curso de Base de Datos a mi cargo. Para recopilar los datos de este estudio se creé una Base de Datos en cada uno de los Lenguajes y se comprobó a nivel del Lenguaje de definición de datos (DDL), Lenguaje de manipulación de datos (DML) y Leng...

  7. Exigências Líquidas e Dietéticas de Energia, Proteína e Macroelementos Minerais de Bovinos de Corte no Brasil

    Directory of Open Access Journals (Sweden)

    Silva Fabiano Ferreira da

    2002-01-01

    Full Text Available Foram utilizados dados parciais ou totais de vários experimentos sobre exigências nutricionais de bovinos, nos quais foi usada a técnica do abate comparativo, abate de uma amostra representativa dos animais experimentais no início do período de alimentação e determinação da composição do corpo vazio. Os conteúdos de gordura, proteína, energia, Ca, P, Mg, Na e K retidos no corpo dos animais de cada grupamento racial foram estimados por meio de equações de regressão do logaritmo do conteúdo corporal de proteína, gordura, energia, Ca, P, Mg, Na e K, em função do logaritmo do peso de corpo vazio (PCVZ. As exigências líquidas de proteína, energia, Ca, P, Mg, Na e K foram obtidas a partir de equação Y' = b. 10ª. Xb-1, sendo "a" e "b" o intercepto e coeficiente de regressão, respectivamente, das equações de predição dos conteúdos corporais de gordura, proteína, energia, Ca, P, Mg, Na ou K. A energia líquida para mantença (ELm foi obtida pelos valores médios, de todos os trabalhos, para os diferentes grupos raciais. As eficiências de utilização da energia metabolizável (EUEM para mantença (k m e ganho de peso (k f foram estimadas a partir da relação entre os teores de energia líquida, para mantença ou ganho, respectivamente, em função da EM da dieta. Para a análise de todos os dados agrupados, entre animais zebuínos e F1 (E x Z e entre animais mestiços leiteiros e Holandeses, aplicou-se o teste de identidade de modelos. A relação ganho de PCVZ/ganho de peso vivo em jejum (GPVJ dos animais zebuínos, F1, mestiços leiteiros e Holandeses foi 0,96; 1,00; 0,94 e 0,86, respectivamente. As equações obtidas para estimativa da proteína retida (PR, em função do GPVJ e da energia retida (ER foram: PR = - 17,6968 + 192,31 GPVJ - 3,8441 ER, para animais zebuínos e PR = 31,4045 + 107,039 GPVJ + 5,632 ER, para F1. As energias líquidas para ganho (ELg podem ser obtidas pelas equações ELg = 0,0435 x PCVZ0

  8. The timing of pollution abatement investments and the business cycle. An international comparison

    Energy Technology Data Exchange (ETDEWEB)

    Bouman, M. [Department of Economics, Faculty of Economics and Econometrics, University of Amsterdam, Amsterdam (Netherlands); Hofkes, M.W. [Department of Economics, Faculty of Economics and Econometrics, Vrije Universiteit Amsterdam, Amsterdam (Netherlands)

    1995-12-31

    A simple equilibrium business-cycle model for an economy with both clean- and dirty-producing plants is developed. The authors derive that the optimal timing of cleaning the production process is during a slowdown of the economy. Due to external effects and market failures the timing of pollution abatement investments is not expected to be optimal in the real world. We test the optimality of the timing of those investments with data for Germany, the Netherlands and the U.S.A. It appears that for more than 25 percent of the sectors pollution abatement investments show counter-cyclical behaviour, while in only one sector these investments are pro-cyclical. 1 tab., 3 appendices, 10 refs.

  9. Research on the application of active sound barriers for the transformer noise abatement

    Directory of Open Access Journals (Sweden)

    Hu Sheng

    2016-01-01

    Full Text Available Sound barriers are a type of measure most commonly used in the noise abatement of transformers. In the noise abatement project of substations, the design of sound barriers is restrained by the portal frames which are used to hold up outgoing lines from the main transformers, which impacts the noise reduction effect. If active sound barriers are utilized in these places, the noise diffraction of sound barriers can be effectively reduced. At a 110kV Substation, an experiment using a 15-channel active sound barrier has been carried out. The result of the experiment shows that the mean noise reduction value (MNRV of the noise measuring points at the substation boundary are 1.5 dB (A. The effect of the active noise control system is impacted by the layout of the active noise control system, the acoustic environment on site and the spectral characteristic of the target area.

  10. Efficiency, equity or disagreement? The economics of international carbon abatement negotiations

    International Nuclear Information System (INIS)

    Mabey, N.; Smith, C.

    1995-01-01

    The current international effort to reduce greenhouse gas emissions, as embodied in the Framework Convention on Climate Change, is often criticized as inefficient by economists because it uses uniform targets instead of more theoretically efficient instruments such as international taxes. However, the effectiveness of any international treaty in producing environmental benefits is not wholly dependent on its economic efficiency but also on its political stability and the ability to accurately monitor and enforce its conditions. Stability depends on the magnitude and distribution of costs and benefits between countries which have heterogeneous economies, environmental damages, trading partners and abatement costs. The distribution of costs between countries will also depend on the type of policy instrument used to coordinate international abatement efforts. This paper analyses trade-offs that must be made when negotiating international agreements in order to balance the need for administrative convenience and economic efficiency with the realization that any agreement is better than no agreement

  11. The timing of pollution abatement investments and the business cycle. An international comparison

    International Nuclear Information System (INIS)

    Bouman, M.; Hofkes, M.W.

    1995-01-01

    A simple equilibrium business-cycle model for an economy with both clean- and dirty-producing plants is developed. The authors derive that the optimal timing of cleaning the production process is during a slowdown of the economy. Due to external effects and market failures the timing of pollution abatement investments is not expected to be optimal in the real world. We test the optimality of the timing of those investments with data for Germany, the Netherlands and the U.S.A. It appears that for more than 25 percent of the sectors pollution abatement investments show counter-cyclical behaviour, while in only one sector these investments are pro-cyclical. 1 tab., 3 appendices, 10 refs

  12. The effect of carbon tax on carbon emission abatement and GDP: a case study

    Science.gov (United States)

    Liu, Xiao; Leung, Yee; Xu, Yuan; Yung, Linda Chor Wing

    2017-10-01

    Carbon tax has been advocated as an effective economic instrument for the abatement of CO2 emission by various countries, including China, the world's biggest carbon emission country. However, carbon emission abatement cannot be done while ignoring the impact on economic growth. A delicate balance needs to be achieved between the two to find an appropriate pathway for sustainable development. This paper applies a multi-objective optimization approach to analyze the impact of levying carbon tax on the energy-intensive sectors of Guangdong province in China under the constraint of emission reduction target. This approach allows us to evaluate carbon emission minimization while maximizing GDP. For policy analysis, we construct five scenarios for evaluation and optimal choice. The results of the analysis show that a lower initial carbon tax rate is not necessarily better, and that a carbon tax is an effective means to reduce CO2 emissions while maintaining a certain level of GDP growth.

  13. Fluxo do transporte de suínos para abate no Estado de Mato Grosso

    OpenAIRE

    Pereira,Thuanny Lúcia; Corassa,Anderson

    2014-01-01

    Objetivou-se descrever o fluxo de suínos para abate produzidos no Estado de Mato Grosso entre os anos de 2008 e 2012. Foram utilizados dados de 9.426.729 suínos produzidos no Estado de Mato Grosso e transportados para abate de janeiro de 2008 a dezembro de 2012, no qual realizou-se análise descritiva das informações, com frequências de origem e destino; machos e fêmeas em função dos meses e anos e as distâncias percorridas. Observou-se crescimento no número de viagens e de suínos transportado...

  14. The role of abatement costs in GHG permit allocations : a global reduction scenario with the World-MARKAL model

    International Nuclear Information System (INIS)

    Vaillancourt, K.; Kanudia, A.

    2004-01-01

    The World-MARKAL model was used to examine a permit trading system to stabilize greenhouse gas emissions. The model considered the participation of all countries, including developing countries. Allocation schemes aimed at fair distribution of net abatement costs among world regions were proposed. The net abatement costs for each region are good indicators of where more abatement measures are needed. Equity issues relative to permit allocations and burden sharing were also presented along with the allocation methodology. The gross abatement costs before permit trading were calculated for each region. The main advantages and disadvantages of this approach were listed. It was concluded that permit allocation schemes based on cost distribution make it possible to obtain solutions with equalized net costs per gross domestic product for all regions. 30 refs., 6 tabs., 3 figs

  15. The Incidence of Local Water Pollution Abatement Expenditures: A Case Study of the Merrimack River Basin (1974)

    Science.gov (United States)

    Part I is an analysis of the determinants of local government expenditures on water pollution abatement facilities. Part II is an investigation of the incidence of costs and benefits of public environmental programs.

  16. Estudo comparativo da independência funcional e qualidade de vida entre idosos ativos e sedentários

    Directory of Open Access Journals (Sweden)

    Mansueto Gomes Neto

    2012-08-01

    Full Text Available INTRODUÇÃO: O sedentarismo tem sido apontado como fator de risco para o desenvolvimento de doenças crônico-degenerativas em idosos; assim, a atividade física tem sido preconizada como forma de prevenção destas doenças, porém existe uma escassez de estudos que relacionem o sedentarismo e a prática de atividade física com a independência funcional (IF e a qualidade de vida (QV desta população. OBJETIVO: Comparar a IF e a QV entre idosos ativos e sedentários. MÉTODOS: Foi realizado um estudo, analítico, comparativo e de caráter temporal transversal, tendo como amostra 30 idosos de ambos os sexos, divididos em dois grupos. O grupo 1 foi composto por 15 idosos ativos e o grupo 2, por 15 idosos sedentários. Para avaliação da IF foi utilizada a medida de independência funcional, para a QV foi utilizado o questionário perfil de saúde de Nottingham, já adaptados e validados no Brasil. Como os dados foram não paramétricos, foi utilizado o teste de Mann-Whitney para comparação entre os grupos; a análise foi realizada com o software SPSS versão 14.0, sendo estabelecido um nível de significância α = 0,05. RESULTADOS: A média de idade do grupo 1 foi de 68,06 ± 7,82, e no grupo 2 a média foi de 71,20 ± 10,26. Na comparação das médias não foi encontrada diferença significativa, p = 0,12. Na comparação da IF e QV, o grupo 1 apresentou melhores resultados que o grupo 2, com p = 0,001 e p = 0,016, respectivamente. CONCLUSÃO: Destaca-se a importância da realização da atividade física para manutenção de uma boa IF e QV em idosos.

  17. Population growth, energy consumption, pollution abatement - looking for the global consensus

    International Nuclear Information System (INIS)

    Czakainski, M.

    1993-01-01

    A new system of the world for solutions to the energy supply problem was damanded by the representatives of China and India at the Madrid congress of the World Energy Council. Drastic energy conservation measures were requested from the Western World. It is still a long way to go to a global consensus about energy consumption, pollution abatement and the protection of the climate. (DG) [de

  18. Socio-economic impact analysis: Centralia mine fire abatement alternatives. Draft report

    Energy Technology Data Exchange (ETDEWEB)

    1980-11-07

    The overall purpose of information contained in the following text is to document the likely social and economic impacts upon the Borough of Centralia through implementation of various mine fire abatement alternatives. Much of the data presented herein and utilized in preparing conclusions and recommendations have been derived from those individuals whose lives are now, or may eventually be, impacted by the underground mine fire.

  19. "'Advantage of Late-comer' in Abating Air-Pollution: Experience in East Asia" (in Japanese)

    OpenAIRE

    Toru Iwami

    2001-01-01

    From the early 1970s to the mid-1980s, air-pollution in Japan, in particular SO2 concentration, was remarkably improved. This is resulted from responses to growing civil protests: governmental regulation policy, on the one hand, and innovation of abating technology and energy efficiency, on the other hand. In Southeast Asian large cities, air-pollution is in better situation, despite their rapid economic growth, than their Japanese counterpart in the early 1970s. This is because their governm...

  20. Greenhouse gas abatement in Senegal. A case study of least-cost options

    International Nuclear Information System (INIS)

    Amous, S.; Revet, D.; Sokona, Y.

    1994-01-01

    The first stage of the study was to make a preliminary inventory of greenhouse gas (GHG) emissions for the base year 1988. Following this seven no regret technical options for emission reduction were investigated and the costs calculated, allowing the identification of three least-cost options. The three least-cost options must be implemented first because of their negative costs. The economic benefits of both abatement scenarios are characterized by a negative global cost whatever the discount rate is. (author)

  1. Health and housing collaboration at LAST: the Philadelphia Lead Abatement Strike Team.

    OpenAIRE

    Campbell, Carla; Himmelsbach, Robert; Palermo, Peter; Tobin, Richard

    2005-01-01

    The Lead Abatement Strike Team (LAST) was developed in 2002 by the Philadelphia Department of Public Health (PDPH) in response to community concern about management of children with elevated blood lead levels (EBLLs). Fourteen hundred backlog properties (housing at least one child with EBLLs) were identified through inspection as having housing-based lead hazards for which no satisfactory environmental remediation (control of lead hazards) had been achieved. In the first two years of LAST, 83...

  2. 4-aminobutyrate aminotransferase (ABAT: genetic and pharmacological evidence for an involvement in gastro esophageal reflux disease.

    Directory of Open Access Journals (Sweden)

    Johan Jirholt

    Full Text Available Gastro-esophageal reflux disease (GERD is partly caused by genetic factors. The underlying susceptibility genes are currently unknown, with the exception of COL3A1. We used three independent GERD patient cohorts to identify GERD susceptibility genes. Thirty-six families, demonstrating dominant transmission of GERD were subjected to whole genome microsatellite genotyping and linkage analysis. Five linked regions were identified. Two families shared a linked region (LOD 3.9 and 2.0 on chromosome 16. We used two additional independent GERD patient cohorts, one consisting of 219 trios (affected child with parents and the other an adult GERD case control cohort consisting of 256 cases and 485 controls, to validate individual genes in the linked region through association analysis. Sixty six single nucleotide polymorphism (SNP markers distributed over the nine genes present in the linked region were genotyped in the independent GERD trio cohort. Transmission disequilibrium test analysis followed by multiple testing adjustments revealed a significant genetic association for one SNP located in an intron of the gene 4-aminobutyrate aminotransferase (ABAT (P(adj = 0.027. This association did not replicate in the adult case-control cohort, possibly due to the differences in ethnicity between the cohorts. Finally, using the selective ABAT inhibitor vigabatrin (γ-vinyl GABA in a dog study, we were able to show a reduction of transient lower esophageal sphincter relaxations (TLESRs by 57.3 ± 11.4 % (p = 0.007 and the reflux events from 3.1 ± 0.4 to 0.8 ± 0.4 (p = 0.007. Our results demonstrate the direct involvement of ABAT in pathways affecting lower esophageal sphincter (LES control and identifies ABAT as a genetic risk factor for GERD.

  3. 4-aminobutyrate aminotransferase (ABAT): genetic and pharmacological evidence for an involvement in gastro esophageal reflux disease.

    Science.gov (United States)

    Jirholt, Johan; Asling, Bengt; Hammond, Paul; Davidson, Geoffrey; Knutsson, Mikael; Walentinsson, Anna; Jensen, Jörgen M; Lehmann, Anders; Agreus, Lars; Lagerström-Fermer, Maria

    2011-04-28

    Gastro-esophageal reflux disease (GERD) is partly caused by genetic factors. The underlying susceptibility genes are currently unknown, with the exception of COL3A1. We used three independent GERD patient cohorts to identify GERD susceptibility genes. Thirty-six families, demonstrating dominant transmission of GERD were subjected to whole genome microsatellite genotyping and linkage analysis. Five linked regions were identified. Two families shared a linked region (LOD 3.9 and 2.0) on chromosome 16. We used two additional independent GERD patient cohorts, one consisting of 219 trios (affected child with parents) and the other an adult GERD case control cohort consisting of 256 cases and 485 controls, to validate individual genes in the linked region through association analysis. Sixty six single nucleotide polymorphism (SNP) markers distributed over the nine genes present in the linked region were genotyped in the independent GERD trio cohort. Transmission disequilibrium test analysis followed by multiple testing adjustments revealed a significant genetic association for one SNP located in an intron of the gene 4-aminobutyrate aminotransferase (ABAT) (P(adj) = 0.027). This association did not replicate in the adult case-control cohort, possibly due to the differences in ethnicity between the cohorts. Finally, using the selective ABAT inhibitor vigabatrin (γ-vinyl GABA) in a dog study, we were able to show a reduction of transient lower esophageal sphincter relaxations (TLESRs) by 57.3 ± 11.4 % (p = 0.007) and the reflux events from 3.1 ± 0.4 to 0.8 ± 0.4 (p = 0.007). Our results demonstrate the direct involvement of ABAT in pathways affecting lower esophageal sphincter (LES) control and identifies ABAT as a genetic risk factor for GERD.

  4. Greenhouse Gas and Ammonia Emissions from Different Stages of Liquid Manure Management Chains: Abatement Options and Emission Interactions.

    Science.gov (United States)

    Mohankumar Sajeev, Erangu Purath; Winiwarter, Wilfried; Amon, Barbara

    2018-01-01

    Farm livestock manure is an important source of ammonia and greenhouse gases. Concerns over the environmental impact of emissions from manure management have resulted in research efforts focusing on emission abatement. However, questions regarding the successful abatement of manure-related emissions remain. This study uses a meta-analytical approach comprising 89 peer-reviewed studies to quantify emission reduction potentials of abatement options for liquid manure management chains from cattle and pigs. Analyses of emission reductions highlight the importance of accounting for interactions between emissions. Only three out of the eight abatement options considered (frequent removal of manure, anaerobic digesters, and manure acidification) reduced ammonia (3-60%), nitrous oxide (21-55%), and methane (29-74%) emissions simultaneously, whereas in all other cases, tradeoffs were identified. The results demonstrate that a shift from single-stage emission abatement options towards a whole-chain perspective is vital in reducing overall emissions along the manure management chain. The study also identifies some key elements like proper clustering, reporting of influencing factors, and explicitly describing assumptions associated with abatement options that can reduce variability in emission reduction estimates. Prioritization of abatement options according to their functioning can help to determine low-risk emission reduction options, specifically options that alter manure characteristics (e.g., reduced protein diets, anaerobic digestion, or slurry acidification). These insights supported by comprehensive emission measurement studies can help improve the effectiveness of emission abatement and harmonize strategies aimed at reducing air pollution and climate change simultaneously. Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.

  5. A Pedagogical Note on Modeling the Economic Benefit of Emissions Abatement vs. the Economic Harm from Emissions

    OpenAIRE

    Christopher S. Decker

    2012-01-01

    The number of undergraduate-level textbooks on environmental economics has increased in recent years, but the textbook treatment of optimal emissions (abatement) varies markedly from textbook to textbook. In particular, there is no consensus as to whether to model the economic “bad” (i.e. emissions) or the economic “good” (abatement). This inconsistency can lead to some needless confusion for students introduced to environmental economics for the first time, particularly those students outsid...

  6. Electrochemical processes in macro and microfluidic cells for the abatement of chloroacetic acid from water

    International Nuclear Information System (INIS)

    Scialdone, O.; Corrado, E.; Galia, A.; Sirés, I.

    2014-01-01

    Highlights: • The electrochemical abatement of chloroacetic acid in water was studied. • The performance of both macro and microfluidic reactors was examined. • Cathodic reduction and anodic oxidation was studied in detail. • Mediated oxidation by electro-Fenton and active chlorine was carried out. • Anodic oxidation at BDD gave better performances. • Microfluidic reactors gave better performances compared to conventional cells. - Abstract: The remediation of solutions contaminated with monochloroacetic acid (CAA), which is one of the most resistant haloacetic acids (HAAs) to chemical degradation, dramatically depends on the adopted electrochemical approach: (i) CAA is only poorly oxidized either by homogeneous hydroxyl radical in electro-Fenton (EF), electrogenerated active chlorine or electro-oxidation on Pt anode; (ii) it is moderately abated by direct reduction on silver or compact graphite cathodes (from 30% in macro cells to 60% in the microfluidic devices); (iii) it is quantitatively removed by direct electro-oxidation on a boron-doped diamond (BDD) anode. The use of a microreactor enables operation in the absence of supporting electrolyte and drastically enhances the performance of the cathodic process. Simultaneously performing direct oxidation on BDD and reduction on graphite in a microfluidic cell yields the fastest CAA removal with 100% abatement at low current densities (∼5 mA cm −2 )

  7. Energy abatement in Chinese industry: Cost evaluation of regulation strategies and allocation alternatives

    International Nuclear Information System (INIS)

    Xia, X.H.; Chen, G.Q.

    2012-01-01

    For Chinese industry, the costs of different energy consumption abatement scenarios are evaluated by the method of directional distance function. These scenarios are based on the combinations of regulation strategies and allocation alternatives—the former are sectors and provinces, and the latter include the five principles of average, intensity share, absolute share, discriminatory absolute and discriminatory intensity. For all the scenarios, the quantitative impacts in terms of output potential loss are calculated and compared. Due to less output potential loss for all the allocation alternatives, the sector regulation strategy is shown to be more effective than the province regulation strategy. It is also demonstrated that, among all the scenarios considered, the sector regulation based on the intensity share principle and the province regulation based on the absolute share principle are the two optimal. The performances of energy abatement allocation of the 11th and 12th Five Year Plans of China are assessed against the simulated scenarios. - Highlights: ► The costs of different energy consumption abatement scenarios are evaluated for Chinese industry. ► The impacts on all entities under all allocation alternatives are calculated and compared. ► The optimal scenarios for the different strategies are identified. ► The performances of the 11th and 12th Five Year Plans are assessed.

  8. Water Resources Research Program. Abatement of malodors at diked, dredged-material disposal sites. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Harrison, W.; Dravnieks, A.; Zussman, R.; Goltz, R.

    1976-06-01

    Samples of malodorous air and dredged material were collected at diked disposal sites at the following locations: Buffalo, NY; Milwaukee, WI; Mobile, AL; York Harbor, ME; Houston, TX; Detroit, MI; and Anacortes, WA; during the period July--October, 1975. Odorous compounds in the air samples were identified by gas chromatography/mass spectrometry, while the detection threshold, intensity, and character of the various odors were determined by experienced panelists using a dynamic, forced-choice-triangle olfactometer. Although significant problems with malodors were not observed beyond the disposal-area dikes during site visits, noteworthy odor episodes had occurred at some sites. An odor-abatement strategy is presented for handling the expected range of odor conditions at dredged-material disposal sites. Its aim is to reduce to an acceptable level the intensity of malodors in an affected community. The main steps in the strategy cover selection of the disposal site, site preparation, odor characterization of sediments to be dredged, malodor abatement during dredging and disposal operations, malodor abatement after filling of the disposal site, and the handling of malodor complaints.

  9. Considerations upon the possibility of abating the pollution produced by thermal power plants

    International Nuclear Information System (INIS)

    Ataman, Eleonora

    1992-01-01

    Thermal power plants using fossil fuels in conventional boilers are among the most important man-made stationary sources of pollutant release. A review of the present possibilities to abate the pollution, mainly by abatement of releases at stack is presented. At present the unique viable solution applicable in Romania thermopower stations appears to be the use of catalytic technology based on NO x selective reduction with ammonia. Investments for pollution abatement installations for intra- or post-combustion burning gases in classic boilers appear to be 1/4 and 1/3 of the cost of a new thermal power plant and the maintenance costs of de-pollution installations even when the resulting products are rendered profitable, the cost of KWh will raise. Replacement of classical boilers by circulating fluidized bed boilers would solve entirely the SO 2 and NO x release issue. Investments for such boilers are lower than those implied by a new classical boiler equipped with supplementary installations for the removal of intra- and post-combustion gases. The only remaining drawback is waste resulting desulfurization which is disposed at the dump. (author)

  10. Maus tratos, comportamento externalizante e autoestima: um estudo comparativo

    OpenAIRE

    Melo, Débora Cristina Fava

    2013-01-01

    Os maus tratos vividos pela criança são considerados prejudiciais ao desenvolvimento infantil e um fator de risco para o surgimento de problemas de comportamento na adolescência. Têm sido associados ao comportamento externalizante e a baixa autoestima, que podem influenciar negativamente o desenvolvimento psicológico, comportamental e social do indivíduo. Esta dissertação de mestrado deriva de um projeto maior desenvolvido no Programa de Pós-Graduação em Psicologia da Faculdade de Psicologia/...

  11. ANÁLISIS COMPARATIVO DE FRAMEWORKS PARA EL DESARROLLO DE APLICACIONES WEB EN JAVA

    OpenAIRE

    Sánchez Acosta, Carlos; Universidad Señor de Sipán; Tuesta Monteza, Victor; Universidad Señor de Sipán; Mejía Cabrera, Iván

    2015-01-01

    En éste documento se presenta un análisis comparativo de frameworks en Java para el desarrollo de aplicaciones web, aplicando una matriz de un modelo de evaluación. Para analizar los frameworks y seleccionarlos se realizó en base a criterios de madurez y documentación, obteniendo como resultado los Frameworks Spring, Struts, JSF, Angular JS para su evaluación.  Asimismo para el análisis teórico de frameworks se formuló un método QSOS, concebido para definir características comparativas del so...

  12. La experiencia en Buchenwald. Estudio comparativo de cinco obras de Jorge Semprún

    OpenAIRE

    Serrano Garrido, Silvia María

    2017-01-01

    Este Trabajo Fin de Máster consiste en un estudio comparativo de las cinco obras de tema concentracionario del escritor e intelectual español Jorge Semprún, el cual fue víctima del régimen nazi entre los años 1943-1945. En estas fechas estuvo deportado en el campo de concentración de Buchenwald, pero sobrevivió para poder contar su experiencia como testigo directo en El largo viaje, Aquel domingo, La escritura o la vida, Viviré con su nombre, morirá con el mío y Ejercicios de supervivencia. ...

  13. Estudio comparativo de las maloclusiones de clase III tratadas con y sin cirugía

    OpenAIRE

    Martínez Asúnsolo, Pascual

    2014-01-01

    El objetivo de la presente tesis fue determinar si existen diferencias en la inclinación de los incisivos superiores e inferiores en pacientes de clase III tratados con cirugía o únicamente con “camuflaje ortodóncico”, así como su repercusión en la relación esquelética final. Para ello se realizó un estudio clínico comparativo y retrospectivo en la unidad docente de Ortodoncia del departamento de Estomatología de la Universidad de Valencia. La muestra consistió en 56 pacientes que cump...

  14. Estudo comparativo entre algoritmos das transformadas discretas de Fourier e Wavelet

    OpenAIRE

    Wilson Hissamu Shirado; Márcio de Abreu Moreira; Jandira Guenka Palma; Sylvio Barbon Júnior

    2015-01-01

    Este trabalho apresenta um estudo comparativo das complexidades dos algoritmos das Transformadas Discretas de Fourier, Wavelet e Transformada Rápida de Fourier. As formalizações matemáticas e algumas características dos algoritmos são apresentadas, assim como alguns conceitos de complexidade assintótica. Por fim, é realizado um ensaio prático para comparação dos algoritmos, abrangendo questões como tempo de execução, vantagens e desvantagens de cada transformada assim como avaliações a respei...

  15. Achieving CO2 reductions in Colombia: Effects of carbon taxes and abatement targets

    International Nuclear Information System (INIS)

    Calderón, Silvia; Alvarez, Andrés Camilo; Loboguerrero, Ana María; Arango, Santiago; Calvin, Katherine; Kober, Tom; Daenzer, Kathryn; Fisher-Vanden, Karen

    2016-01-01

    In this paper we investigate CO 2 emission scenarios for Colombia and the effects of implementing carbon taxes and abatement targets on the energy system. By comparing baseline and policy scenario results from two integrated assessment partial equilibrium models TIAM-ECN and GCAM and two general equilibrium models Phoenix and MEG4C, we provide an indication of future developments and dynamics in the Colombian energy system. Currently, the carbon intensity of the energy system in Colombia is low compared to other countries in Latin America. However, this trend may change given the projected rapid growth of the economy and the potential increase in the use of carbon-based technologies. Climate policy in Colombia is under development and has yet to consider economic instruments such as taxes and abatement targets. This paper shows how taxes or abatement targets can achieve significant CO 2 reductions in Colombia. Though abatement may be achieved through different pathways, taxes and targets promote the entry of cleaner energy sources into the market and reduce final energy demand through energy efficiency improvements and other demand-side responses. The electric power sector plays an important role in achieving CO 2 emission reductions in Colombia, through the increase of hydropower, the introduction of wind technologies, and the deployment of biomass, coal and natural gas with CO 2 capture and storage (CCS). Uncertainty over the prevailing mitigation pathway reinforces the importance of climate policy to guide sectors toward low-carbon technologies. This paper also assesses the economy-wide implications of mitigation policies such as potential losses in GDP and consumption. An assessment of the legal, institutional, social and environmental barriers to economy-wide mitigation policies is critical yet beyond the scope of this paper. - Highlights: • Four energy and economy-wide models under carbon mitigation scenarios are compared. • Baseline results show that CO

  16. Estudo comparativo da capacidade de contração do assoalho pélvico em atletas de voleibol e basquetebol

    Directory of Open Access Journals (Sweden)

    Ariana Oliveira Reis

    2011-04-01

    Full Text Available As modalidades esportivas de alto impacto podem produzir um aumento exagerado e frequente na pressão intra-abdominal, um dos fatores desencadeadores da incontinência urinária de esforço (IUE em atletas. Foi realizado um estudo com 20 atletas, sendo 10 de basquetebol e 10 de voleibol, do tipo quantitativo, observacional, transversal e comparativo, no qual foi comparada a capacidade de contração do assoalho pélvico (AP entre atletas de voleibol e basquetebol, e então correlacionadas com sintomas de IUE. A avaliação das atletas foi composta por um questionário, a avaliação funcional do assoalho pélvico (AFA e avaliação da capacidade de contração do AP através do Biofeedback Eletromiográfico Fênix®. Após a avaliação, não foi observada diferença estatisticamente significante com relação à capacidade de contração do assoalho pélvico entre atletas de basquetebol e voleibol; porém, ambas as modalidades apresentaram atletas com relatos de perda involuntária de urina mediante esforço físico, com maior proporção no grupo de atletas de basquetebol.

  17. O papel exercido pela mulher nos estabelecimentos comerciais de um shopping center: um estudo comparativo com relação à atuação feminina no comércio de rua, em Tubarão

    Directory of Open Access Journals (Sweden)

    Marília Köenig

    2013-03-01

    Full Text Available Este artigo destaca os resultados obtidos no Projeto de Iniciação Científica da Faculdade Senac Tubarão 2012, cujo objetivo foi perceber o perfil das mulheres que trabalham nas lojas integrantes do shopping center local (Farol Shopping. Em um segundo momento, faz-se um comparativo entre a análise dos dados coletados na pesquisa de 2012 com os resultados obtidos no PIC Senac em 2011, no qual se investigou o papel da mulher que atua no comércio de rua do Centro de Tubarão. Para tanto, as diferenças existentes entre os dois tipos de comércio (shopping e comércio de rua serão apresentadas. Questões relativas às diferenças entre os gêneros feminino e masculino (culturais e no mercado de trabalho serão também abordadas no trabalho. Em seguida, será exposta a metodologia e os resultados alcançados: o perfil de gestoras e colaboradoras das lojas do shopping, bem como o comparativo com o estudo realizado no comércio de rua do Centro de Tubarão. No que tange à metodologia, o artigo apoia-se em pesquisa bibliográfica e na pesquisa-diagnóstico, realizada no Farol Shopping. Percebeu-se, nesse contingente, que as colaboradoras atuantes no shopping têm idades entre 20 e 25 anos, sendo mais jovens do que as que trabalham no comércio de rua referente à pesquisa de 2011. Dentre as gestoras, tal realidade se repete; elas estão na faixa etária de 20 a 30 anos, têm, em parte, escolaridade maior e menor tempo de atuação na área do que as gestoras das lojas de rua entrevistadas na pesquisa anterior.

  18. COMPORTAMENTO DE CONSUMO ECOLOGICAMENTE CONSCIENTE: ESTUDO COMPARATIVO BRASIL X CHINA

    Directory of Open Access Journals (Sweden)

    Tatiana Azevedo Yeh

    2015-12-01

    Full Text Available Esse estudo buscou identificar os fatores que afetam o comportamento de consumo ecologicamente consciente (CCEC. Foram utilizadas duas amostras, uma com chineses e outra com brasileiros. Para análise dos dados utilizou-se técnica estatística descritiva, Teste t e regressão linear multivariada. Demonstrou-se, nas duas amostras, dois construtos comumente significativos para o CCEC: o próprio comportamento verde em si para realização de outros CCEC e os moderadores externos. Identificou-se que a baixa disponibilidade de produtos verdes entre os brasileiros é barreira à ser considerada para o fomento do CCEC no Brasil, que encontra-se na primeira fase de comportamento verde que é a compra. E que os chineses realizam todos os tipos de comportamento: compra, uso e reciclagem.

  19. Using the soil and water assessment tool to estimate dissolved inorganic nitrogen water pollution abatement cost functions in central portugal.

    Science.gov (United States)

    Roebeling, P C; Rocha, J; Nunes, J P; Fidélis, T; Alves, H; Fonseca, S

    2014-01-01

    Coastal aquatic ecosystems are increasingly affected by diffuse source nutrient water pollution from agricultural activities in coastal catchments, even though these ecosystems are important from a social, environmental and economic perspective. To warrant sustainable economic development of coastal regions, we need to balance marginal costs from coastal catchment water pollution abatement and associated marginal benefits from coastal resource appreciation. Diffuse-source water pollution abatement costs across agricultural sectors are not easily determined given the spatial heterogeneity in biophysical and agro-ecological conditions as well as the available range of best agricultural practices (BAPs) for water quality improvement. We demonstrate how the Soil and Water Assessment Tool (SWAT) can be used to estimate diffuse-source water pollution abatement cost functions across agricultural land use categories based on a stepwise adoption of identified BAPs for water quality improvement and corresponding SWAT-based estimates for agricultural production, agricultural incomes, and water pollution deliveries. Results for the case of dissolved inorganic nitrogen (DIN) surface water pollution by the key agricultural land use categories ("annual crops," "vineyards," and "mixed annual crops & vineyards") in the Vouga catchment in central Portugal show that no win-win agricultural practices are available within the assessed BAPs for DIN water quality improvement. Estimated abatement costs increase quadratically in the rate of water pollution abatement, with largest abatement costs for the "mixed annual crops & vineyards" land use category (between 41,900 and 51,900 € tDIN yr) and fairly similar abatement costs across the "vineyards" and "annual crops" land use categories (between 7300 and 15,200 € tDIN yr). Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.

  20. Estudo comparativo da eficácia do etanol e do ácido L-glutâmico na prevenção da calcificação das cúspides e parede aórtica porcina: estudo experimental em ratos Comparative study on the efficacy of ethanol and of l-glutamic acid for preventing calcification of pig cusps and aortic wall: experimental study in rats

    Directory of Open Access Journals (Sweden)

    George Ronald Soncini da ROSA

    2002-06-01

    Full Text Available INTRODUÇÃO: As cúspides porcinas tratadas com glutaraldeído (GDA são um dos tecidos biológicos mais utilizados em biopróteses, porém a calcificação tardia pós-implante constitui a causa predominante de sua falência. OBJETIVO: Analisar comparativamente dois métodos de prevenção da calcificação (etanol 80% e ácido L-glutâmico 0,8% em cúspide e parede aórtica porcina implantadas no subcutâneo em ratos, tendo como grupo controle as cúspides e os segmentos de parede aórtica fixadas em glutaraldeído (GDA, num período de 15, 30 e 60 dias após implante. MATERIAL E MÉTODOS: Foram utilizados 45 ratos jovens, distribuídos em 3 grupos contendo 15 animais cada, que por sua vez foram subdivididos em 3 subgrupos de 5 animais, nos quais foram implantados, em 2 bolsas no subcutâneo, uma cúspide e um segmento de parede aórtica em cada. Em cada grupo assim nominados: GDA (grupo controle, E80% (grupo cujas estruturas foram pré-tratadas com etanol 80% e o AG 0,8% (grupo cujas estruturas foram pré-tratadas com ácido L-glutâmico 0,8% foram realizadas a mensuração do cálcio e análise microscópica quanto à presença de calcificação (localização e intensidade da mesma e de Infiltrado inflamatório (localização e tipo, no período de 15, 30 e 60 dias após implante. RESULTADOS: Na mensuração do cálcio na cúspide aórtica encontrou-se no grupo E80% 15 dias (1,30±0,21 mg cálcio/mg tecido, E80% 30 dias (1,05±0,22 mg cálcio/mg tecido e E80% 60 dias (0,53±0,42 mg cálcio/mg tecido; no grupo AG 0,8% 15 dias (12,17±0,66 mg cálcio/mg tecido, AG 0,8% 30 dias (15,31±2,82 mg cálcio/mg tecido e AG 0,8% 60 dias (34,24±16,28 mg cálcio/mg tecido com o grupo controle GDA 15 dias (12,44±2,26 mg cálcio/mg tecido, GDA 30 dias (13,44±3,34 mg cálcio/mg tecido e GDA 60 dias (50,85±8,71 mg cálcio/mg tecido. Em relação à mensuração do cálcio na parede aórtica, encontrou-se no grupo de E80% 15 dias (4,62±0,68 mg c

  1. Estimating asbestos abatement projects: Excellence or 'You said I missed what'?

    International Nuclear Information System (INIS)

    Frawley, R.F.

    1992-01-01

    Between 1900 and 1980, 30 million tons of asbestos were put in place. Because of the known health hazards and increasing federal, state, and local regulations, building owners are now facing the problem of asbestos abatement. There are 4 basic approaches to dealing with asbestos: (1) removal, (2) enclosure, (3) encapsulation, (4) deferred action in conjunction with a well defined operations and maintenance program. Once the full extent of the problem is determined, the decision can be made on which action or combination of actions to take and begin estimating the cost of the asbestos abatement project. There are no high-tech methods of asbestos removal. It is hot, wet, labor intensive work, the ways of removal are archaic. Removal means man power and man hours, labor is a big ticket item, and is an important factor in cost estimating. Become very familiar with the scope of the project and be sure to fully understand the depth of the asbestos problem. The products, supplies, tools, and in some cases, the machines are all disposable items. If one overlooks something or underestimates the time involved for removal, not only will one be way off on material, the labor costs will soar. Be very observant on walk throughs, notice everything. Be sure to get clear, accurate test results on material to be removed. Once all this is done, one can make a good take off with confidence. Finally, when in doubt always remember the 11th commandment of asbestos abatement cost-estimating 'If thou can't figure it out hor-ellipsis thou best figure it in.'

  2. Ex-ante evaluation of EU ETS during 2013–2030: EU-internal abatement

    International Nuclear Information System (INIS)

    Hu, Jing; Crijns-Graus, Wina; Lam, Long; Gilbert, Alyssa

    2015-01-01

    This study investigates CO 2 emission reduction within the EU resulting from the Emissions Trading Scheme (ETS) up to 2030. This is performed by constructing a baseline scenario without the ETS and assessing the impacts of the ETS, as currently designed. The results indicate that the ETS will start to impact emissions primarily after 2025 due to the prevalence of a sizable allowance surplus. The impact of approved (i.e. back-loading and 2.2% linear reduction factor (LRF)) and proposed (i.e. market stability reserve (MSR)) policy interventions and the inclusion of aviation, could accelerate the exhaustion of surplus and increase emission reductions during the investigated period. However, these measures would be insufficient to restore the scarcity of allowances and the corresponding carbon price before the start of ETS Phase IV, and the effectiveness of EU-internal abatement cannot be guaranteed until 2023. The effectiveness could be further reduced in the case of the economic shocks or the exclusion of international aviation. To restore the scarcity of allowances, other reform options are necessary. This paper extends the reasoning for the early removal of the back-loaded 900 Mtonne allowances by 2020 and broadening the scope of ETS to other sectors with potential high demand for allowances. - Highlights: • Quantification of CO 2 emission abatement in the EU resulting from the ETS up to 2030. • The impact of policy interventions and the inclusion of aviation is quantified. • The effectiveness of EU ETS in EU-internal abatement is limited until 2023

  3. Reforestation as a novel abatement and compliance measure for ground-level ozone

    Science.gov (United States)

    Kroeger, Timm; Escobedo, Francisco J.; Hernandez, José L.; Varela, Sebastián; Delphin, Sonia; Fisher, Jonathan R. B.; Waldron, Janice

    2014-01-01

    High ambient ozone (O3) concentrations are a widespread and persistent problem globally. Although studies have documented the role of forests in removing O3 and one of its precursors, nitrogen dioxide (NO2), the cost effectiveness of using peri-urban reforestation for O3 abatement purposes has not been examined. We develop a methodology that uses available air quality and meteorological data and simplified forest structure growth-mortality and dry deposition models to assess the performance of reforestation for O3 precursor abatement. We apply this methodology to identify the cost-effective design for a hypothetical 405-ha, peri-urban reforestation project in the Houston–Galveston–Brazoria O3 nonattainment area in Texas. The project would remove an estimated 310 tons of (t) O3 and 58 t NO2 total over 30 y. Given its location in a nitrogen oxide (NOx)-limited area, and using the range of Houston area O3 production efficiencies to convert forest O3 removal to its NOx equivalent, this is equivalent to 127–209 t of the regulated NOx. The cost of reforestation per ton of NOx abated compares favorably to that of additional conventional controls if no land costs are incurred, especially if carbon offsets are generated. Purchasing agricultural lands for reforestation removes this cost advantage, but this problem could be overcome through cost-share opportunities that exist due to the public and conservation benefits of reforestation. Our findings suggest that peri-urban reforestation should be considered in O3 control efforts in Houston, other US nonattainment areas, and areas with O3 pollution problems in other countries, wherever O3 formation is predominantly NOx limited. PMID:25201970

  4. Estimating the financial risks of Andropogon gayanus to greenhouse gas abatement projects in northern Australia

    Science.gov (United States)

    Adams, Vanessa M.; Setterfield, Samantha A.

    2013-06-01

    Financial mechanisms such as offsets are one strategy to abate greenhouse gas emissions, and the carbon market is expanding with a growing demand for offset products. However, in the case of carbon offsets, if the carbon is released due to intentional or unintentional reversal through environmental events such as fire, the financial liability to replace lost offsets will likely fall on the provider. This liability may have implications for future participation in programmes, but common strategies such as buffer pool and insurance products can be used to minimize this liability. In order for these strategies to be effective, an understanding of the spatial and temporal distributions of expected reversals is needed. We use the case study of savanna burning, an approved greenhouse gas abatement methodology under the Carbon Farming Initiative in Australia, to examine potential risks to carbon markets in northern Australia and quantify the financial risks. We focus our analysis on the threat of Andropogon gayanus (gamba grass) to savanna burning due to its documented impacts of increased fuel loads and altered fire regimes. We assess the spatial and financial extent to which gamba grass poses a risk to savanna burning programmes in northern Australia. We find that 75% of the eligible area for savanna burning is spatially coincident with the high suitability range for gamba grass. Our analysis demonstrates that the presence of gamba grass seriously impacts the financial viability of savanna burning projects. For example, in order to recuperate the annual costs of controlling 1 ha of gamba grass infestation, 290 ha of land must be enrolled in annual carbon abatement credits. Our results show an immediate need to contain gamba grass to its current extent to avoid future spread into large expanses of land, which are currently profitable for savanna burning.

  5. Estimating the financial risks of Andropogon gayanus to greenhouse gas abatement projects in northern Australia

    International Nuclear Information System (INIS)

    Adams, Vanessa M; Setterfield, Samantha A

    2013-01-01

    Financial mechanisms such as offsets are one strategy to abate greenhouse gas emissions, and the carbon market is expanding with a growing demand for offset products. However, in the case of carbon offsets, if the carbon is released due to intentional or unintentional reversal through environmental events such as fire, the financial liability to replace lost offsets will likely fall on the provider. This liability may have implications for future participation in programmes, but common strategies such as buffer pool and insurance products can be used to minimize this liability. In order for these strategies to be effective, an understanding of the spatial and temporal distributions of expected reversals is needed. We use the case study of savanna burning, an approved greenhouse gas abatement methodology under the Carbon Farming Initiative in Australia, to examine potential risks to carbon markets in northern Australia and quantify the financial risks. We focus our analysis on the threat of Andropogon gayanus (gamba grass) to savanna burning due to its documented impacts of increased fuel loads and altered fire regimes. We assess the spatial and financial extent to which gamba grass poses a risk to savanna burning programmes in northern Australia. We find that 75% of the eligible area for savanna burning is spatially coincident with the high suitability range for gamba grass. Our analysis demonstrates that the presence of gamba grass seriously impacts the financial viability of savanna burning projects. For example, in order to recuperate the annual costs of controlling 1 ha of gamba grass infestation, 290 ha of land must be enrolled in annual carbon abatement credits. Our results show an immediate need to contain gamba grass to its current extent to avoid future spread into large expanses of land, which are currently profitable for savanna burning. (letter)

  6. Airborne exposure and soil levels associated with lead abatement of a steel tank.

    Science.gov (United States)

    Lange, John H

    2002-02-01

    This study reports on airborne exposure levels and soil concentrations of lead in regard to abatement of a steel structure (water tank). The tank was de-leaded by abrasive sand blasting. The ball of the tank had a lead surface level that exceeded the Environmental Protection Agency (EPA) definition of lead-based paint (LBP) (0.5% lead), but paint on stem and base was below this criterion. Personal and area airborne samples were collected during different activities of lead abatement of the tank. Summary results suggest during abrasive blasting of ball and stem/base personal exposure levels, as reported with arithmetic and geometric means, exceed the Occupational Safety and Health Administration (OSHA) permissible exposure limit (50 microg/m3). Highest personal exposure (occupational exposure) was associated with blasting of ball. Distribution of airborne and soil samples suggest non-normality and is best represented by a logarithmic form. Geometric standard deviations for air and soil lead support a non-normal distribution. Outlying values were found for personal and area air samples. Exposure levels associated with blasting stem/base section of tank support OSHA's policy requiring air monitoring of work at levels below the criterion established by EPA in identifying LBP. Area samples were statistically lower than personal samples associated with blasting ball and stem/base of tank. Exposure data suggest that workers performing abatement on steel structures have elevated lead exposure from surface lead. Respirator protection requirements are discussed. Soil lead concentration was suggested to decrease as distance increased from tank. Soil lead is suggested to be a result of deposition from LBP on tank surface. Minimal efforts were required to reduce average lead soil levels below EPA's upper acceptable criterion (1200 ppm Pb).

  7. Acid dispersion abatement: the use of flue gas desulphurisation in the UK

    Energy Technology Data Exchange (ETDEWEB)

    Longhurst, J.W.S.; Health, B.A.; Gibber, D.C. [Manchester Metropolitan University, Manchester (United Kingdom). Atmospheric Research and Information Centre, Dept. of Environmental and Geographical Sciences

    1995-12-31

    This paper reviews and evaluates the development of the UK flue gas desulphurisation (FGD) programme. This programme on establishment in 1986 represented a planned and coherent approach to acid deposition abatement which would progressively reduce emissions whilst maintaining the UK`s coal fired power generation capacity. It was anticipated that at least 12000 MW of electricity generating plant would be retrofitted with FGD. The programme has effectively been abandoned in favour of market based approach to emission control which sets the targets to be achieved but not the means. As a consequence the retrofitted capacity in 1995 is just 6000 MW. 17 refs., 1 tab.

  8. Inferring Carbon Abatement Costs in Electricity Markets: A Revealed Preference Approach using the Shale Revolution

    OpenAIRE

    Joseph A. Cullen; Erin T. Mansur

    2014-01-01

    This paper examines how much carbon emissions from the electricity industry would decrease in response to a carbon price. We show how both carbon prices and cheap natural gas reduce, in a nearly identical manner, the historic cost advantage of coal-fired power plants. The shale revolution has resulted in unprecedented variation in natural gas prices that we use to estimate the short-run price elasticity of abatement. Our estimates imply that a price of $10 ($60) per ton of carbon dioxide woul...

  9. Removable Thin Films used for the Abatement and Mitigation of Beryllium

    International Nuclear Information System (INIS)

    Lumia, M.; Gentile, C.; Creek, K.; Sandoval, R.

    2003-01-01

    The use of removable thin films for the abatement of hazardous particulates has many advantages. Removable thin films are designed to trap and fix particulates in the film's matrix by adhesion. Thin films can be applied to an existing contaminated area to fix and capture the particulates for removal. The nature of the removable thin films, after sufficient cure time, is such that it can typically be removed as one continuous entity. The removable thin films can be applied to almost any surface type with a high success rate of removal

  10. Payback Period for Emissions Abatement Alternatives: Role of Regulation and Fuel Prices

    DEFF Research Database (Denmark)

    Zis, Thalis; Angeloudis, Panagiotis; Bell, Michael G. H.

    2016-01-01

    As of January 2015, the new maximum limit of fuel sulfur content for ships sailing within emission control areas has been reduced to 0.1%. A critical decision for ship owners in advance of the new limits was the selection of an abatement method that complies with the regulations. Two main options...... exist: investing in scrubber systems that remove sulfur dioxide emissions from the exhaust and switching to low-sulfur fuel when sailing in regulated waters. The first option would involve significant capital costs, while the latter would lead to operating cost increases because of the higher price...

  11. Niobium(V) saponite clay for the catalytic oxidative abatement of chemical warfare agents.

    Science.gov (United States)

    Carniato, Fabio; Bisio, Chiara; Psaro, Rinaldo; Marchese, Leonardo; Guidotti, Matteo

    2014-09-15

    A Nb(V)-containing saponite clay was designed to selectively transform toxic organosulfur chemical warfare agents (CWAs) under extremely mild conditions into nontoxic products with reduced environmental impact. Thanks to the insertion of Nb(V) sites within the saponite framework, a bifunctional catalyst with strong oxidizing and acid properties was obtained. Remarkable activity and high selectivity were observed for the oxidative abatement of (2-chloroethyl)ethyl sulfide (CEES), a simulant of sulfur mustard, at room temperature with aqueous hydrogen peroxide. This performance was significantly better compared to a conventional commercial decontamination powder. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  12. Report on developing bottom-up Marginal Abatement Cost Curves (MACCS) for representative farm types

    DEFF Research Database (Denmark)

    Eory, V.; MacLeod, M.; Faverdin, P.

    2015-01-01

    a gap in our understanding of economic mitigation potential of agriculture in developing and newly industrialised countries. To address these questions this report presents three studies. The first is a literature review of the cost-effectiveness estimates of mitigation measures published in the past 15...... years, discussing the variability in these estimates. The second study reports on marginal abatement cost curves for beef cattle production in Brazil. Finally, the last report presents the conceptual basis of a tool to assess the financial implications of the mitigation measures to be used in parallel...

  13. Asia least-cost greenhouse gas abatement strategy identification and assessment of mitigation options for the energy sector

    International Nuclear Information System (INIS)

    Gupta, Sujata; Bhandari, Preety

    1998-01-01

    The focus of the presentation was on greenhouse gas mitigation options for the energy sector for India. Results from the Asia Least-cost Greenhouse gas Abatement Strategies (ALGAS) project were presented. The presentation comprised of a review of the sources of greenhouse gases, the optimisation model, ie the Markal model, used for determining the least-cost options, discussion of the results from the baseline and the abatement scenarios. The second half of the presentation focussed on a multi-criteria assessment of the abatement options using the Analytical Hierarchical Process (AHP) model. The emissions of all greenhouse gases, for India, are estimated to be 986.3 Tg of carbon dioxide equivalent for 1990. The energy sector accounted for 58 percent of the total emissions and over 90 percent of the CO2 emissions. Net emissions form land use change and forestry were zero. (au)

  14. Directed technical change and the adoption of CO2 abatement technology. The case of CO2 capture and storage

    International Nuclear Information System (INIS)

    Otto, Vincent M.; Reilly, John

    2008-01-01

    This paper studies the cost-effectiveness of combining traditional environmental policy, such as CO 2 -trading schemes, and technology policy that has aims of reducing the cost and speeding the adoption of CO 2 abatement technology. For this purpose, we develop a dynamic general equilibrium model that captures empirical links between CO 2 emissions associated with energy use, directed technical change and the economy. We specify CO 2 capture and storage (CCS) as a discrete CO 2 abatement technology. We find that combining CO 2 -trading schemes with an adoption subsidy is the most effective instrument to induce adoption of the CCS technology. Such a subsidy directly improves the competitiveness of the CCS technology by compensating for its markup over the cost of conventional electricity. Yet, introducing R and D subsidies throughout the entire economy leads to faster adoption of the CCS technology as well and in addition can be cost-effective in achieving the abatement target. (author)

  15. The timing of biological carbon sequestration and carbon abatement in the energy sector under optimal strategies against climate risks

    International Nuclear Information System (INIS)

    Gitz, V.; Hourcade, J.Ch.; Ciais, Ph.

    2005-10-01

    This paper addresses the timing of the use of biological carbon sequestration and its capacity to alleviate the carbon constraint on the energy sector. We constructed a stochastic optimal control model balancing the costs of fossil emission abatement, the opportunity costs of lands allocated to afforestation, and the costs of uncertain climate damages. We show that a minor part of the sequestration potential should start immediately as a 'brake', slowing down both the rate of growth of concentrations and the rate of abatement in the energy sector. thus increasing the option value of the emission trajectories. But, most of the potential is put in reserve to be used as a 'safety valve' after the resolution of uncertainty, if a higher and faster decarbonization is required: sequestration cuts off the peaks of costs of fossil abatement and postpones the pivoting of the energy system by up to two decades. (authors)

  16. Abating coal tar seepage into surface water bodies using sheet piles with sealed interlocks

    International Nuclear Information System (INIS)

    Collingwood, B.I.; Boscardin, M.D.; Murdock, R.F.

    1995-01-01

    A former coal tar processing facility processed crude coal tar supplied from manufactured gas plants in the area. Coal-tar-contaminated ground water from the site was observed seeping through an existing timber bulkhead along a tidal river and producing a multicolored sheen on the surface of the river. As part of a short-term measure to abate the seepage into the river, 64-m long anchored sheet pile wall with sheet pile wing walls at each end was constructed inland of the of the timber bulkhead. The sheet piles extended to low-permeability soils at depth and the interlocks of the sheet piles were provided with polyurethane rubber seals. Based on postconstruction observations for leakage and sheens related to leakage, the steel sheet piles with polyurethane rubber interlock seals appeared to provide a successful seal and abate coal-tar-contaminated ground water seepage into the river. The tie rod penetration sealing proved to be a more problematic detail, but through several postconstruction grouting episodes, an effective seal was produced

  17. Energy balance and GHG-abatement cost of cassava utilization for fuel ethanol in Thailand

    International Nuclear Information System (INIS)

    Nguyen, Thu Lan Thi; Gheewala, Shabbir H.; Garivait, Savitri

    2007-01-01

    Since 2001, in order to enhance ethanol's cost competitiveness with gasoline, the Thai government has approved the exemption of excise tax imposed on ethanol, controlling the retail price of gasohol (a mixture of ethanol and gasoline at a ratio of 1:9) to be less than that of octane 95 gasoline, within a range not exceeding 1.5 baht a litre. The policy to promote ethanol for transport is being supported by its positive effects on energy security and climate change mitigation. An analysis of energy, greenhouse gas (GHG) balances and GHG abatement cost was done to evaluate fuel ethanol produced from cassava in Thailand. Positive energy balance of 22.4 MJ/L and net avoided GHG emission of 1.6 kg CO 2 eq./L found for cassava-based ethanol (CE) proved that it would be a good substitute for gasoline, effective in fossil energy saving and GHG reduction. With a GHG abatement cost of US$99 per tonne of CO 2 , CE is rather less cost effective than the many other climate strategies relevant to Thailand in the short term. Opportunities for improvements are discussed to make CE a reasonable option for national climate policy

  18. A Methodology for Constructing Marginal Abatement Cost Curves for Climate Action in Cities

    Directory of Open Access Journals (Sweden)

    Nadine Ibrahim

    2016-03-01

    Full Text Available As drivers of climate action, cities are taking measures to reduce greenhouse gas (GHG emissions, which if left unabated pose a challenge to meeting long-term climate targets. The economics of climate action needs to be at the forefront of climate dialogue to prioritize investments among competing mitigation measures. A marginal abatement cost (MAC curve is an effective visualization of climate action that initiates a technical and economic discussion of the cost-effectiveness and abatement potential of such actions among local leaders, policy makers, and climate experts. More commonly demonstrated for countries, MAC curves need to be developed for cities because of their heterogeneity, which vary in their urban activities, energy supply, infrastructure stock, and commuting patterns. The methodology for constructing bottom-up MAC curves for cities is presented for technologies that offer fuel switching and/or energy efficiencies, while considering technology lifetimes, city-specific electricity and fuel prices, and emission intensities. Resulting MAC curves are unique to every city, and chart the pathway towards low-carbon growth by prioritizing measures based on cost-effectiveness. A case study of Toronto’s climate targets demonstrates the prioritization of select technologies. Leveraging MAC curves to support climate programs enables cities to strategically invest in financing climate action and designing incentives.

  19. The cost of carbon abatement through community forest management in Nepal Himalaya

    Energy Technology Data Exchange (ETDEWEB)

    Karky, Bhaskar Singh [Economic Analysis Division, International Centre for Integrated Mountain Development, GPO Box 3226, Kathmandu (Nepal); Skutsch, Margaret [Centro de Investigaciones en Geographia Ambiental, Universidad Nacional Autonoma de Mexico, Morelia (Mexico); University of Twente, PO Box 217 7500 AE Enschede (Netherlands)

    2010-01-15

    This paper estimates the economic returns to carbon abatement through biological sequestration in community managed forest under future REDD policy, and compares these for three possible management scenarios. For the estimation, the research relies on forest inventory data together with other socio-economic and resources use data collected from forest users in three sites of Nepal Himalaya. The paper estimates the incremental carbon from forest enhancement on a yearly basis over a five-year period using the value of 1 and 5 per tCO{sub 2} for conservative analysis. The results based on the three sites indicate that community forest management may be one of the least cost ways to abate carbon with a break-even price under Scenario 2 which ranges from 0.55 to 3.70 per tCO{sub 2}. However, bringing community forests into the carbon market may entail high opportunity costs as forests provide numerous non-monetary benefits to the local population, who regard these as the main incentive for conservation and management. An important finding of the research is that if forest resources use by local communities is not permitted, then carbon trading will not be attractive to them as revenue from carbon will not cover the cost foregone by not harvesting forest resources. (author)

  20. CFD modeling of a UV-LED photocatalytic odor abatement process in a continuous reactor

    International Nuclear Information System (INIS)

    Wang, Zimeng; Liu, Jing; Dai, Yuancan; Dong, Weiyang; Zhang, Shicheng; Chen, Jianmin

    2012-01-01

    Highlights: ► A CFD model is developed for a UV-LED based photocatalytic deodorization reactor. ► Radiation field model and Langmuir–Hinshelwood kinetics are integrated in the model. ► The model can predict the pollutant concentration profile and the reactor performance. ► LED distance is predicted to be a critical parameter in photocatalytic reactor design. - Abstract: This paper presents a model study of a UV light-emitting-diode (UV-LED) based photocatalytic odor abatement process. It integrated computational fluid dynamics (CFD) modeling of the gas flow in the reactor with LED-array radiation field calculation and Langmuir–Hinshelwood reaction kinetics. It was applied to simulate the photocatalytic degradation of dimethyl sulfide (DMS) in a UV-LED reactor based on experimentally determined chemical kinetic parameters. A non-linear power law relating reaction rate to irradiation intensity was adopted. The model could predict the steady state DMS concentration profiles by calculating the advection, diffusion and Langmuir–Hinshelwood reaction kinetics. By affecting the radiation intensity and uniformity, the position of the LED array relative to the catalyst appeared to be a critical parameter determining DMS removal efficiency. Too small distances might yield low quantum efficiency and consequently poor abatement performance. This study provided an example of LED-based photocatalytic process modeling and gave insights into the optimization of light source design for photocatalytic applications.

  1. Chance-constrained/stochastic linear programming model for acid rain abatement. I. Complete colinearity and noncolinearity

    Energy Technology Data Exchange (ETDEWEB)

    Ellis, J H; McBean, E A; Farquhar, G J

    1985-01-01

    A Linear Programming model is presented for development of acid rain abatement strategies in eastern North America. For a system comprised of 235 large controllable point sources and 83 uncontrolled area sources, it determines the least-cost method of reducing SO/sub 2/ emissions to satisfy maximum wet sulfur deposition limits at 20 sensitive receptor locations. In this paper, the purely deterministic model is extended to a probabilistic form by incorporating the effects of meteorologic variability on the long-range pollutant transport processes. These processes are represented by source-receptor-specific transfer coefficients. Experiments for quantifying the spatial variability of transfer coefficients showed their distributions to be approximately lognormal with logarithmic standard deviations consistently about unity. Three methods of incorporating second-moment random variable uncertainty into the deterministic LP framework are described: Two-Stage Programming Under Uncertainty, Chance-Constrained Programming and Stochastic Linear Programming. A composite CCP-SLP model is developed which embodies the two-dimensional characteristics of transfer coefficient uncertainty. Two probabilistic formulations are described involving complete colinearity and complete noncolinearity for the transfer coefficient covariance-correlation structure. The completely colinear and noncolinear formulations are considered extreme bounds in a meteorologic sense and yield abatement strategies of largely didactic value. Such strategies can be characterized as having excessive costs and undesirable deposition results in the completely colinear case and absence of a clearly defined system risk level (other than expected-value) in the noncolinear formulation.

  2. Preliminary data from γ-cardiography during the abatement of an asthmatic attack (1961)

    International Nuclear Information System (INIS)

    Georges, R.; Vernejoul, P. de; Raynaud, C.; Blanchon, P.; Kellershohn, C.; Turiaf, J.

    1961-01-01

    The authors used gamma cardiology during the abatement of 16 cases of asthma with a view to detecting heart attacks not otherwise visible with routine methods of examination: clinical, radiological and electro-cardio-graphical. In gamma cardiology, a radioactive indicator is used and its path followed in the cavities of the heart. The method makes it possible to study the circulation in the right heart, the pulmonary crossing, and the left heart, as well as evaluation of the heart-flow. As a result of their investigations the authors, after having discussed the significance of the data obtained with the method, suggest that it is possible by the use of gamma cardiography during the abatement of an asthma attack: 1- To confirm attacks of the right heart which have already been detected by ordinary methods. 2- To confirm the presence of modifications in the recorded curves which suggest, in the case of the left heart, possible attack; such on attack is also indicated, in a small number of cases, by electrocardiography curves. Some considerations are put forward by the authors concerning the physiopathology of attacks on the left heart. (authors) [fr

  3. Development and testing of technical measures for the abatement of PM10 emissions from poultry housings

    Energy Technology Data Exchange (ETDEWEB)

    Ogink, N.W.M.; Aarnink, A.J.A.; Mosquera, J.; Winkel, A. [Wageningen UR Livestock Research, Wageningen (Netherlands)

    2010-07-01

    In order to comply with the European Union's ambient air quality standards, the Netherlands must reduce emissions of PM10. As a contributor to PM10, the poultry industry must implement mitigation measures before 2012. An extensive research and development program was launched in 2008 to provide abatement technology for broiler and layer houses. This paper presented results from studies carried out in 2008 and 2009 by Wageningen UR Livestock Research. The supply industry and poultry farmers participated in the study in which different methods and approaches were examined, including bedding material, light schedules, oil spraying systems, ionization systems, water scrubbers, combined scrubbers, electrostatic filters, and dry filters. Most methods were first tested and optimized in small units at an experimental poultry facility Lelystad. Several methods were validated in a next step on poultry farms, where PM10 emissions were measured to establish official emission factors. The oil spraying system and ionization system were tested in broiler houses and are nearing implementation. Reductions in PM10 emissions by different methods ranged from no effect to levels of 60 per cent. An outlook on adequate dust abatement measures for poultry housings was also provided.

  4. Abatements of reduced sulphur compounds, colour, and organic matter from indigo dyeing effluents by electrocoagulation.

    Science.gov (United States)

    Tünay, Olcay; Simşeker, Merve; Kabdaşli, Isik; Olmez-Hanci, Tugba

    2014-08-01

    In the present study, the treatability of indigo dyeing effluents by the electrocoagulation (EC) process using stainless steel electrodes was experimentally investigated. The samples used were concentrated with main pollutant parameters of chemical oxygen demand (COD) (1000-1100 mg/L), reduced sulphur species (over 2000 mg SO2-(3)/L), and colour (0.12-0.13 1/cm). The study focused on the effect of main operation parameters on the EC process performance in terms of abatement of reduced sulphur compounds as well as decolourization and organic matter reduction. Results indicated that the performance of EC proved to be high providing total oxidation of the reduced sulphur compounds, almost complete decolourization, and COD removal up to 90%. Increasing applied current density from 22.5 to 45 mA/cm2 appreciably improved abatement of the reduced sulphur compounds for Sample I, but a further increase in the applied current density to 67.5 mA/cm2 did not accelerate the conversion rate to sulphate. The process performance was adversely affected by increasing initial concentration of the reduced sulphur compounds. Decolourization and organic matter removal efficiency enhanced with increasing applied current density. The main removal mechanism of the reduced sulphur compounds by EC was explained as conversion to sulphate via oxidation. Conversion rate to sulphate fitted pseudo-first-order kinetics very well.

  5. Evaluation of plume potential and plume abatement of evaporative cooling towers in a subtropical region

    International Nuclear Information System (INIS)

    Xu Xinhua; Wang Shengwei; Ma Zhenjun

    2008-01-01

    Hong Kong is a typical subtropical region with frequently high humidity in late spring and summer seasons. Plume from evaporative cooling towers, which service air-conditioning systems of civil buildings, has aroused public concerns since 2000 when the fresh water evaporative cooling towers were allowed to be used for high energy efficiency and environmental issues. This paper presents the evaluation of the plume potential and its effect on the sizing of the plume abatement system in a large commercial office building in Hong Kong for practical application. This evaluation was conducted based on a dynamic simulation platform using the typical meteorological year of Hong Kong since the occurrence of the plume heavily depends on the state conditions of the exhaust air from cooling towers and the ambient air, while the state condition of the exhaust air is determined by the total building cooling load and the control strategies of cooling towers employed mainly for improving energy efficiency. The results show that the control strategies have a significant effect on the plume potential and further affect the system design and sizing of the plume abatement system

  6. Macro economic linkages and impacts. Technical and fiscal options in GHG abatement

    International Nuclear Information System (INIS)

    Backus, G.; Barker, T.

    1995-01-01

    This paper discusses some of the main macro economic linkages and feedbacks associated with policies for GHG abatement. The linkages in a global model are described when OECD carbon taxes or alternatively OECD/OPEC joint action raises world oil prices with a smaller OECD carbon tax. The results give a world perspective on the GHG abatement problem. The paper continues with a discussion of the linkages and feedbacks associated with three options: demand-side management (DSM), mainly to improve end-use energy efficiency, reductions in subsidies of fossil fuel production and use, and investment in renewable energy supplies, specifically in energy forestry and associated infrastructure. It concludes that DSM and investment in renewables are unlikely on their own to bring about reduction in GHG emissions, and that new supplies may even lead to increased emissions by driving down the price of energy. However, reductions in emissions may be compatible with increased efficiency and development, as well as with improvements in the quality of the local environment and in rural living, with the new supplies replacing fossil fuel supplies, provided that real fossil fuel prices are increased via removal of subsidies and if required carbon taxes. (au) 15 refs

  7. Ammonia emissions from livestock industries in Canada: Feasibility of abatement strategies

    International Nuclear Information System (INIS)

    Carew, Richard

    2010-01-01

    An updated national ammonia (NH 3 ) emissions inventory was employed to study the relationship between NH 3 emissions and livestock industries in Canada. Emissions from animal agriculture accounted for 322 kilotonnes (kt) or 64% of Canadian NH 3 emissions in 2002. Cattle and swine accounted for the bulk of livestock emissions. The provinces of Alberta, Ontario, Quebec, and Saskatchewan accounted for 28.1%, 22.0%, 18.7%, and 13.1% of total livestock emissions, respectively. Emissions from Ontario and Quebec were attributed to the intensive production of dairy, hogs and poultry. Dairy cattle emissions per hectolitre of milk were higher in Ontario and Quebec than in other provinces, while swine emissions per livestock unit were higher than either beef or dairy cattle. A review of the abatement literature indicated diet manipulation to improve N efficiency and land spreading methods are very effective techniques to lower NH 3 emissions. Future research is required to evaluate the feasibility of biofilters and feces/urine separation methods. - Livestock NH 3 emissions are higher in areas characterized by intensive livestock production with diet manipulation and land spreading offering the greatest potential for NH 3 abatement options.

  8. Energy-saving behavior and marginal abatement cost for household CO2 emissions

    International Nuclear Information System (INIS)

    Hamamoto, Mitsutsugu

    2013-01-01

    This paper attempts to measure consumers' perceived net benefits (or net costs) of energy-saving measures in using energy-consuming durable goods. Using the estimated net costs and the volume of CO 2 reduced by the measures, a marginal abatement cost (MAC) curve for the average household's CO 2 emissions is produced. An analysis using the curve suggests that in order to provide households with an incentive to take actions that can lead to CO 2 emission reductions in using energy-consuming durables, a high level of carbon price is needed. In addition, a regression analysis reveals that the net benefits of the measures are larger for households that put a higher priority on energy saving, for those living in detached houses, for those with a smaller number of persons living together, and for those with less income. The result of the analysis using the MAC curve may suggest that promoting energy-saving behavior will require not only a policy to provide economic incentives but also interventions to influence psychological factors of household behavior. - Highlights: • Consumers' perceived net costs of energy-saving measures in using energy-consuming durables are measured. • Using the estimated net costs, a marginal abatement cost (MAC) curve for the average household's CO 2 emissions is produced. • A high carbon price is needed in order to provide households with an incentive to take actions for energy-savings. • Households' attributes affecting their energy-saving behavior are revealed by a regression analysis

  9. Characterizing Synergistic Water and Energy Efficiency at the Residential Scale Using a Cost Abatement Curve Approach

    Science.gov (United States)

    Stillwell, A. S.; Chini, C. M.; Schreiber, K. L.; Barker, Z. A.

    2015-12-01

    Energy and water are two increasingly correlated resources. Electricity generation at thermoelectric power plants requires cooling such that large water withdrawal and consumption rates are associated with electricity consumption. Drinking water and wastewater treatment require significant electricity inputs to clean, disinfect, and pump water. Due to this energy-water nexus, energy efficiency measures might be a cost-effective approach to reducing water use and water efficiency measures might support energy savings as well. This research characterizes the cost-effectiveness of different efficiency approaches in households by quantifying the direct and indirect water and energy savings that could be realized through efficiency measures, such as low-flow fixtures, energy and water efficient appliances, distributed generation, and solar water heating. Potential energy and water savings from these efficiency measures was analyzed in a product-lifetime adjusted economic model comparing efficiency measures to conventional counterparts. Results were displayed as cost abatement curves indicating the most economical measures to implement for a target reduction in water and/or energy consumption. These cost abatement curves are useful in supporting market innovation and investment in residential-scale efficiency.

  10. Assessment of the abatement of acelsulfame K using cerium doped ZnO as photocatalyst

    International Nuclear Information System (INIS)

    Calza, P.; Gionco, C.; Giletta, M.; Kalaboka, M.; Sakkas, V.A.; Albanis, T.; Paganini, M.C.

    2017-01-01

    Highlights: • Hydrothermal synthesis and characterization of Ce doped ZnO. • The abatement of ACE K is assessed in ultrapure water and in river water matrix. • Demonstrated higher degradation activity than P25 under visible light. • The degradation activity is less affected in river water than for P25. - Abstract: In the present study, we investigated the possibility to abate Acesulfame K, a persistent emerging contaminant, in aqueous media using zinc oxide based materials. For this purpose, bare and Ce-doped zinc oxide was prepared via an easy and cheap hydrothermal process using different cerium salts as precursors. Their photocatalytic performance was evaluated in different media, namely ultrapure and river water under both UV–vis and visible light. Commercial TiO_2 P25 was also employed and used as a reference photocatalyst for comparison purposes. The obtained results pointed out that cerium doped zinc oxide composites exhibit higher performance than TiO_2 P25, especially under visible light and in the presence of organic matter, when the activity of the latter is greatly depressed. In particular, ZnO doped with cerium (1%) was the most effective material, and could be a promising alternative to TiO_2 P25, especially in the treatment of natural waters.

  11. Least cost, utility scale abatement from Australia's NEM (National Electricity Market). Part 2: Scenarios and policy implications

    International Nuclear Information System (INIS)

    Brear, M.J.; Jeppesen, M.; Chattopadhyay, D.; Manzie, C.; Alpcan, T.; Dargaville, R.

    2016-01-01

    This paper is the second of a two part study that considers least cost, greenhouse gas abatement pathways for an electricity system. Part 1 of this study formulated a model for determining these abatement pathways, and applied this model to Australia's NEM (National Electricity Market) for a single reference scenario. Part 2 of this study applies this model to different scenarios and considers the policy implications. These include cases where nuclear power generation and CCS (carbon capture and storage) are implemented in Australia, which is presently not the case, as well as a more detailed examination of how an extended, RPS (renewable portfolio standard) might perform. The effect of future fuel costs and different discount rates are also examined. Several results from this study are thought to be significant. Most importantly, this study suggests that Australia already has utility scale technologies, renewable and non-renewable resources, an electricity market design and an abatement policy that permit continued progress towards deep greenhouse gas abatement in its electricity sector. In particular, a RPS (renewable portfolio standard) appears to be close to optimal as a greenhouse gas abatement policy for Australia's electricity sector for at least the next 10–15 years. - Highlights: • Considers scenarios and policy implications for Australia's NEM (National Electricity Market). • An extended form of RPS (renewable portfolio standard) appears near optimal until roughly 2030. • For up to 80% abatement, the inclusion of nuclear achieves only marginal benefit by 2050. • CCS (Carbon capture and storage) does not appear competitive with current cost estimates.

  12. Separating environmental efficiency into production and abatement efficiency. A nonparametric model with application to U.S. power plants

    Energy Technology Data Exchange (ETDEWEB)

    Hampf, Benjamin

    2011-08-15

    In this paper we present a new approach to evaluate the environmental efficiency of decision making units. We propose a model that describes a two-stage process consisting of a production and an end-of-pipe abatement stage with the environmental efficiency being determined by the efficiency of both stages. Taking the dependencies between the two stages into account, we show how nonparametric methods can be used to measure environmental efficiency and to decompose it into production and abatement efficiency. For an empirical illustration we apply our model to an analysis of U.S. power plants.

  13. Nitrate formation during ozonation as a surrogate parameter for abatement of micropollutants and the N-nitrosodimethylamine (NDMA) formation potential.

    Science.gov (United States)

    Song, Yang; Breider, Florian; Ma, Jun; von Gunten, Urs

    2017-10-01

    In this study, nitrate formation from ammonium and/or dissolved organic nitrogen (DON) was investigated as a novel surrogate parameter to evaluate the abatement of micropollutants during ozonation of synthetic waters containing natural organic matter (NOM) isolates, a natural water and secondary wastewater effluents. Nitrate formation during ozonation was compared to the changes in UV absorbance at 254 nm (UVA 254 ) including the effect of pH. For low specific ozone doses UVA 254 was abated more efficiently than nitrate was formed. This is due to a relatively slow rate-limiting step for nitrate formation from the reaction between ozone and a proposed nitrogen-containing intermediate. This reaction cannot compete with the fast reactions between ozone and UV-absorbing moieties (e.g., activated aromatic compounds). To further test the kinetics of nitrate formation, two possible intermediates formed during ozonation of DON were tested. At pH 7, nitrate was formed during ozonation of acetone oxime and methyl nitroacetate with second-order rate constants of 256.7 ± 4.7 M -1  s -1 and 149.5 ± 5.8 M -1  s -1 , respectively. The abatement of the selected micropollutants (i.e., 17α-ethinylestradiol (EE2), carbamazepine (CBZ), bezafibrate (BZF), ibuprofen (IBU), and p-chlorobenzoic acid (pCBA)) was investigated for specific ozone doses ≤1.53 mgO 3 /mgDOC and its efficiency depended strongly on the reactivity of the selected compounds with ozone. The relative abatement of micropollutants (i.e., EE2 and CBZ) with high ozone reactivity showed linear relationships with nitrate formation. The abatement of micropollutants with intermediate-low ozone reactivity (BZF, IBU, and pCBA) followed one- and two-phase behaviors relative to nitrate formation during ozonation of water samples containing high and low concentrations of nitrate-forming DON, respectively. During ozonation of a wastewater sample, the N-nitrosodimethylamine formation potential (NDMA-FP) during

  14. Estudo comparativo entre algoritmos das transformadas discretas de Fourier e Wavelet

    Directory of Open Access Journals (Sweden)

    Wilson Hissamu Shirado

    2015-11-01

    Full Text Available Este trabalho apresenta um estudo comparativo das complexidades dos algoritmos das Transformadas Discretas de Fourier, Wavelet e Transformada Rápida de Fourier. As formalizações matemáticas e algumas características dos algoritmos são apresentadas, assim como alguns conceitos de complexidade assintótica. Por fim, é realizado um ensaio prático para comparação dos algoritmos, abrangendo questões como tempo de execução, vantagens e desvantagens de cada transformada assim como avaliações a respeito das diferentes resoluções tempo/frequência de cada algoritmo.

  15. Observaciones comparativos sobre la estructura de clase de los países capitalistas avanzados

    Directory of Open Access Journals (Sweden)

    CARLO CARBONI

    1984-01-01

    Full Text Available Se realiza un estudio histórico comparativo sobre la estructura de clase en diez países capitalistas avanzados : Austria, Canadá, Francia, República Federal de Alemania, Italia, Japón, España, Suecia, Reino Unido y Estados Unidos. Se utilizan fuentes gubernamentales variadas para determinar qué factores son los que favorecen y determinan la transformación de la estructura de clase. Se concede un especial énfasis a la relación entre el sistema económico y el político. También se tratan otros temas como el impacto del estado de bienestar, la distribución del producto nacional bruto en forma de ingresos per cápita y el número de trabajadores autónomos en cada país.

  16. La organización informal en los equipos innovadores: un estudio de caso comparativo

    Directory of Open Access Journals (Sweden)

    CRISTINA LÓPEZ

    Full Text Available Este artículo presenta un estudio comparativo, mixto, transversal y descriptivo, que se basa en un modelo multinivel de factores psicosociales para identificar, evaluar y comprender la dinámica de la organización informal en la innovación empresarial. La investigación se hace en el nivel de equipos, mediante la aplicación de los instrumentos del modelo. Para la comparación de los equipos, estos se clasifican como ''innovadores'' y ''no innovadores'', a partir de la práctica de actividades de innovación reconocidas por la Organización para la Cooperación y el Desarrollo Económico (OCDE. Debido a la distribución no paramétrica de las variables, se usa el estadístico U de Mann Whitney para identificar las diferencias. La muestra corresponde a 70 equipos que integran a 563 personas de 21 empresas. El estudio encuentra que sí existen diferencias en los factores de cohesión, potencia y clima de aprendizaje entre aquellos equipos que hacen actividades de innovación y los que no, también en el factor de liderazgo entre aquellos equipos que hacen actividades de investigación y desarrollo y los que realizan otro tipo de actividades de innovación. Para comprender la relación de dichos factores con la innovación, se desarrolla un multicaso comparativo, entre cuatro equipos ''innovadores'' de dos empresas participantes. Los resultados dejan de manifiesto la relación existente entre factores de orden cultural y los factores psicosociales potencia y clima de aprendizaje.

  17. Hexane abatement and spore emission control in a fungal biofilter-photoreactor hybrid unit

    Energy Technology Data Exchange (ETDEWEB)

    Saucedo-Lucero, J.O. [Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid (Spain); IPICyT, Instituto Potosino de Investigación Científica y Tecnológica, División de Ciencias Ambientales, Camino a la Presa San José No. 2055, C.P., 78216 San Luis Potosí (Mexico); Quijano, G. [Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid (Spain); Arriaga, S. [IPICyT, Instituto Potosino de Investigación Científica y Tecnológica, División de Ciencias Ambientales, Camino a la Presa San José No. 2055, C.P., 78216 San Luis Potosí (Mexico); Muñoz, R., E-mail: mutora@iq.uva.es [Department of Chemical Engineering and Environmental Technology, University of Valladolid, Dr. Mergelina s/n, 47011 Valladolid (Spain)

    2014-07-15

    Highlights: • A fungal biofilter/photoreactor was evaluated in terms of hexane and spore removal. • Biofilter supported elimination capacities of ≈35 g m{sup −3} h{sup −1} and CO{sub 2} yields of ≈75%. • The photocatalytic process slightly boosted the hexane abatement performance. • Biofilter emitted fungal spores at concentrations of 2.4 × 10{sup 3}–9.0 × 10{sup 4} CFU m{sup −3}. • Photo-assisted post-treatments resulted in spore deactivation efficiencies of 98%. - Abstract: The performance of a fungal perlite-based biofilter coupled to a post-treatment photoreactor was evaluated over 234 days in terms of n-hexane removal, emission and deactivation of fungal spores. The biofilter and photoreactor were operated at gas residence times of 1.20 and 0.14 min, respectively, and a hexane loading rate of 115 ± 5 g m{sup −3} h{sup −1}. Steady n-hexane elimination capacities of 30–40 g m{sup −3} h{sup −1} were achieved, concomitantly with pollutant mineralization efficiencies of 60–90%. No significant influence of biofilter irrigation frequency or irrigation nitrogen concentration on hexane abatement was recorded. Photolysis did not support an efficient hexane post-treatment likely due to the short EBRT applied in the photoreactor, while overall hexane removal and mineralization enhancements of 25% were recorded when the irradiated photoreactor was packed with ZnO-impregnated perlite. However, a rapid catalyst deactivation was observed, which required a periodic reactivation every 48 h. Biofilter irrigation every 3 days supported fungal spore emissions at concentrations ranging from 2.4 × 10{sup 3} to 9.0 × 10{sup 4} CFU m{sup −3}. Finally, spore deactivation efficiencies of ≈98% were recorded for the photolytic and photocatalytic post-treatment processes. This study confirmed the potential of photo-assisted post-treatment processes to mitigate the emission of hazardous fungal spores and boost the abatement performance of

  18. A bottom-up method to develop pollution abatement cost curves for coal-fired utility boilers

    Science.gov (United States)

    This paper illustrates a new method to create supply curves for pollution abatement using boiler-level data that explicitly accounts for technology costs and performance. The Coal Utility Environmental Cost (CUECost) model is used to estimate retrofit costs for five different NO...

  19. Towards spatially smart abatement of human pharmaceuticals in surface waters: defining impact of sewage treatment plants on susceptible functions

    NARCIS (Netherlands)

    Gils, J.A.G.; Coppens, L.J.C.; Laak, ter T.L.; Raterman, B.W.; Wezel, van A.P.

    2015-01-01

    For human pharmaceuticals, sewage treatment plants (STPs) are a major point of entry to surface waters. The receiving waters provide vital functions. Modeling the impact of STPs on susceptible functions of the surface water system allows for a spatially smart implementation of abatement options at,

  20. Towards spatially smart abatement of human pharmaceuticals in surface waters : Defining impact of sewage treatment plants on susceptible functions

    NARCIS (Netherlands)

    Coppens, Lieke J C; van Gils, Jos A G; Ter Laak, Thomas L|info:eu-repo/dai/nl/304831026; Raterman, Bernard W; van Wezel, Annemarie P|info:eu-repo/dai/nl/141376074

    2015-01-01

    For human pharmaceuticals, sewage treatment plants (STPs) are a major point of entry to surface waters. The receiving waters provide vital functions. Modeling the impact of STPs on susceptible functions of the surface water system allows for a spatially smart implementation of abatement options at,

  1. Nanomaterials for the Abatement of Pharmaceuticals and Personal Care Products from Wastewater

    Directory of Open Access Journals (Sweden)

    Francesca Stefania Freyria

    2018-01-01

    Full Text Available In this short-review, the most common types of both pharmaceutical and personal care products (PPCP, a class of “emerging pollutants” are considered, as well as some of the most frequent methods for their removal that envisage the use of nanomaterials. The nanomaterials used in conservative methods (namely, reverse osmosis, nanofiltration and adsorption are basically nanoporous solids. Non-conservative methods, which include photocatalysis and Fenton reaction, are currently considered more promising than conservative ones, as the former allow the (at least partial degradation of the original molecules into more biodegradable by-products, which can be further abated by subsequent biological treatments, whereas the former are not efficient for the removal of small quantities of pollutants and have to be regenerated.

  2. Kennedy Space Center (KSC) Launch Pad Avian Abatement Efforts Including Related KSC Road Kill Reduction Effort

    Science.gov (United States)

    Schlierf, Roland; Hight, Ron; Payne, Stephen J.; Shaffer, John P.; Missimer, Brad; Willis, Christopher

    2007-01-01

    While birds might seem harmless, there's a good reason for the concern. During the July 2005 launch of Discovery on mission STS-1 14, a vulture soaring around the launch pad impacted the shuttle's external tank just after liftoff. With a vulture's average weight ranging from 3 to 5 pounds. a strike at a critical point on the Shuttle -- like the nose or wing leading thermal protection panels -- could cause catastrophic damage to the vehicle. The foam chunk that fatefully struck Columbia's wing in 2003 weighed only 1.7 pounds. (Cheryl L. Mansfield "Bye Bye Birdies" 2006) To address this issue, NASA formed an "Avian Abatement Team". The team goal is to have safer Shuttle missions by reducing the vulture population at KSC near the pad area thereby reducing the probability of another vulture strike during a Shuttle launch.

  3. China’s regional industrial energy efficiency and carbon emissions abatement costs

    International Nuclear Information System (INIS)

    Wang, Ke; Wei, Yi-Ming

    2014-01-01

    Graphical abstract: Major cities in eight economy-geography regions of China. - Highlights: • Industrial energy and emissions efficiency were evaluated for China’s major cities. • Shadow prices of CO 2 emissions were estimated for China’s major cities. • Efficiency increase potentials on energy utilization and CO 2 emissions are 19% and 17%. • N-shaped EKC exists between levels of CO 2 emissions efficiency and income. • Average industrial CO 2 emissions abatement cost for China’s major cities is 45 US$. - Abstract: Evaluating the energy and emissions efficiency, measuring the energy saving and emissions reduction potential, and estimating the carbon price in China at the regional level are considered a crucial way to identify the regional efficiency levels and efficiency promotion potentials, as well as to explore the marginal abatement costs of carbon emissions in China. This study applies a newly developed Data Envelopment Analysis (DEA) based method to evaluate the regional energy and emissions efficiencies and the energy saving and emissions reduction potentials of the industrial sector of 30 Chinese major cities during 2006–2010. In addition, the CO 2 shadow prices, i.e., the marginal abatement costs of CO 2 emissions from industrial sector of these cities are estimated during the same period. The main findings are: (i) The coast area cities have the highest total factor industrial energy and emissions efficiency, but efficiency of the west area cities are lowest, and there is statistically significant efficiency difference between these cities. (ii) Economically well-developed cities evidence higher efficiency, and there is still obviously unbalanced and inequitable growth in the nationwide industrial development of China. (iii) Fortunately, the energy utilization and CO 2 emissions efficiency gaps among different Chinese cities were decreasing since 2006, and the problem of inequitable nationwide development has started to mitigate. (iv

  4. The Role of Technology Spillovers in the Process of Water Pollution Abatement for Large International Firms

    Directory of Open Access Journals (Sweden)

    Luigi Aldieri

    2017-05-01

    Full Text Available The objective of this paper is to analyze the effects of technology externalities stemming from different technological sectors for international firms engaged both in water pollution abatement and in dirty activities. We present a theoretical framework and an empirical analysis based upon a dataset composed of worldwide R&D-intensive firms. In order to identify the technological proximity between the firms, we construct an original Mahalanobis environmental industry weight matrix, based on the construction of technological vectors for each firm, with European ecological patents distributed across more technology classes. Opportune econometric techniques that deal with the firms’ unobserved heterogeneity and the weak exogeneity of the explanatory variables are implemented. The findings show significant spillover effects on the productivity and environmental performance of the firms.

  5. Freer markets and the abatement of carbon emissions. The electricity-generating sector in India

    International Nuclear Information System (INIS)

    Khanna, Madhu; Zilberman, David

    1999-01-01

    This paper develops a framework to explore the implications of trade and domestic policy distortions for the magnitude of carbon emissions and for the welfare costs of abating these emissions. An application to the electricity-generating sector in India shows that economic policy reforms can also be effective environmental policy instruments and reduce carbon emissions even in the absence of an emissions tax. This reduction in emissions is accompanied by an increase in domestic welfare, an increase in electricity output, and conservation of coal. Coordinating trade and domestic policy reform with an emissions tax policy reduces emissions further, while leading to gains in welfare that are greater than those under an emissions tax policy alone

  6. Economic and game-theoretical analysis of CO{sub 2} emission abatement

    Energy Technology Data Exchange (ETDEWEB)

    Tahvonen, O. [Helsinki School of Economics, Helsinki (Finland)

    1996-12-31

    Current decisions on greenhouse gas emissions may have effects on human well being for centuries. This project has aimed to extend the economic models designed for analyzing this particular issue. A closely related topic follows from the fact that emitting CO{sub 2} can be interpreted as a utilization of a free access resource, i.e., when countries gain from utilizing cheap fossil fuels (relative to noncarbon energy sources), the possible loss any country suffers from climate change is only a negligible fraction of the total loss of all countries. Thus, from a global point of view, the incentives for an individual country to abate emissions is low. Economic understanding of these problems calls for dynamic game-theoretical models

  7. Exploring the potential of fungi for methane abatement: Performance evaluation of a fungal-bacterial biofilter.

    Science.gov (United States)

    Lebrero, Raquel; López, Juan Carlos; Lehtinen, Iiro; Pérez, Rebeca; Quijano, Guillermo; Muñoz, Raúl

    2016-02-01

    Despite several fungal strains have been retrieved from methane-containing environments, the actual capacity and role of fungi on methane abatement is still unclear. The batch biodegradation tests here performed demonstrated the capacity of Graphium sp. to co-metabolically biodegrade methane and methanol. Moreover, the performance and microbiology of a fungal-bacterial compost biofilter treating methane at concentrations of ∼2% was evaluated at empty bed residence times of 40 and 20 min under different irrigation rates. The daily addition of 200 mL of mineral medium resulted in elimination capacities of 36.6 ± 0.7 g m(-3) h(-1) and removal efficiencies of ≈90% at the lowest residence time. The indigenous fungal community of the compost was predominant in the final microbial population and outcompeted the inoculated Graphium sp. during biofilter operation. Copyright © 2015 Elsevier Ltd. All rights reserved.

  8. CO2 abatement potential of wood utilisation. Wood as an energy carrier

    International Nuclear Information System (INIS)

    Wegener, G.; Fruehwald, A.

    1994-01-01

    Forests as ecosystems not only supply the raw material wood but also exert an influence on soils, water resources and many other ecological factors; provide animals with a habitat; and offer as humans a place for recreation. Recently, forests and wood have become of interest to human civilisation from yet another aspect: they constitute a carbon storage. This means that forestry and the forest industries can help moderate the increase of atmospheric CO 2 concentrations, which is essentially the result of energetic utilisation of fossil fuels and considered the decisive factor underlying the greenhouse effect. Besides constituting a carbon storage, forests hold an additional CO 2 abatement potential which can be realised by continuous utilisation of wood. (orig./EF) [de

  9. Economic and game-theoretical analysis of CO{sub 2} emission abatement

    Energy Technology Data Exchange (ETDEWEB)

    Tahvonen, O [Helsinki School of Economics, Helsinki (Finland)

    1997-12-31

    Current decisions on greenhouse gas emissions may have effects on human well being for centuries. This project has aimed to extend the economic models designed for analyzing this particular issue. A closely related topic follows from the fact that emitting CO{sub 2} can be interpreted as a utilization of a free access resource, i.e., when countries gain from utilizing cheap fossil fuels (relative to noncarbon energy sources), the possible loss any country suffers from climate change is only a negligible fraction of the total loss of all countries. Thus, from a global point of view, the incentives for an individual country to abate emissions is low. Economic understanding of these problems calls for dynamic game-theoretical models

  10. Análise do processo de gestão estratégica: um estudo comparativo em escritórios de contabilidade

    Directory of Open Access Journals (Sweden)

    SILVANA ANITA WALTER, DRA

    2011-11-01

    Full Text Available Este estudo objetiva analisar o processo de gestão de escritórios de Contabilidade, especificamente a gestão estratégica, a partir de base teórica que abrange atitude empreendedora, conteúdo e desenvolvimento de estratégias e contexto de referência. Realizou-se, em outubro de 2009, um estudo de caso comparativo de dois escritórios de Contabilidade estabelecidos em Curitiba (PR, desenvolvendo-se entrevistas semiestruturadas com os proprietários-dirigentes e análise de conteúdo. Identificou-se a ocorrência de diferentes processos de desenvolvimento de estratégias, sobretudo o incremental e de atitude empreendedora. O conteúdo da estratégia variou de analítico a prospector. O contexto de referência é, principalmente, o local. Percebeu-se que a atitude empreendedora afeta o conteúdo da estratégia; e que aspectos de atitude empreendedora, conteúdo da estratégia e contexto ambiental de referência interagem e influenciam o processo de desenvolvimento de estratégia. No geral, os resultados obtidos corroboram o encontrado na literatura. Todos os aspectos concluídos apontam para a importância de considerar tais fatores contingenciais (estratégia, ambiente e comportamento empreendedor para a compreensão do modus operandi do processo de desenvolvimento da estratégia nas organizações, inclusive as tipicamente contábeis.

  11. Reatividade vascular da artéria mamária interna: estudos farmacológicos comparativos entre artérias caninas direita e esquerda

    Directory of Open Access Journals (Sweden)

    EVORA Paulo Roberto B.

    1999-01-01

    Full Text Available Para estudos comparativos da reatividade vascular entre artéria mamária interna (AMI canina direita e esquerda, realizaram-se experimentos "in vitro" utilizando-se banhos orgânicos ("organ chambers" e ensaios biológicos: 1 os produtos plaquetários ADP e 5-HT induziram, respectivamente, vasodilatação dependente e independente do endotélio; 2 os autacóides, bradicinina e histamina, também induziram vasodilatação, respectivamente, dependente e independente do endotélio; 3 o A23187, vasodilatador independente de receptor, induziu relaxamentos dependentes do endotélio; 4 dopamina, dobutamina, papaverina e a poli-L-arginina induziram vasodilatações independentes do endotélio; 5 a NOR induziu intensa vasoconstrição comparável à causada pelo KCI e pela endotelina; 6 em 83% de 24 ensaios, a liberação basal de NO foi maior na AMI esquerda, em comparação com a AMI direita; 7 ensaios biológicos de AMIs demonstraram a importância da PGI2 nas condições de hipóxia, uma vez que a indometacina aboliu vasodilatação adicional em resposta à hipóxia em condições de vasodilatação induzida pela liberação basal de NO; 8 não ocorreram diferenças significantes de resposta, comparando-se estudos realizados em AMIs direita e esquerda.

  12. Análisis comparativo del cariotipo en poblaciones de Alstroemeria ligtu subsp. ligtu y A. ligtu subsp. simsii (Alstroemeriaceae de Chile

    Directory of Open Access Journals (Sweden)

    Carlos M. Baeza

    2006-01-01

    Full Text Available Alstroemeria (Alstroemeriaceae es un género endémico de América del Sur. En Chile, este género se distribuye desde el extremo norte hasta la Patagonia, y la mayor diversidad de especies se encuentra en la zona central. Precisamente en esta zona crece Alstroemeria ligtu con sus 3 subespecies: A. ligtu subsp. ligtu, A. ligtu subsp. incarnata, A. ligtu subsp. simsii. Se realizó un estudio comparativo del cariotipo de individuos provenientes de 5 poblaciones de A. ligtu subsp. ligtu de la VIII Región, y de una población de A. ligtu subsp. simsii de la V Región, mediante tinción de los cromosomas con DAPI u orceína acética. Las seis poblaciones estudiadas presentaron un cariotipo asimétrico, con 2n=2x=16 cromosomas. Las poblaciones de A. ligtu subsp. ligtu presentaron una fórmula haploide conformada por cuatro cromosomas metacéntricos (los pares 1 y 2 con microsatélites, uno submetacéntrico con microsatélite y tres telocéntricos con microsatélites. La población de A. ligtu subsp. simsii se caracterizó por poseer cinco cromosomas metacéntricos (el par 2 con un microsatélite y el par 6 con una constricción secundaria y tres cromosomas telocéntricos con satélite. Estos resultados indican que el cariotipo en A. ligtu es variable, y es probable que cambios a nivel cromosómico hayan contribuido en la diversificación de esta especie.

  13. Comparative study of angio genesis radiopharmaceuticals for melanoma detection; Estudo comparativo de radiofarmacos para angiogenese na deteccao de melanoma

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira, Erica Aparecida de

    2011-07-01

    Early diagnosis and treatment of melanoma, a cutaneous tumor with a serious prognosis, is extremely important for optimal clinical outcome. Phage display peptide libraries are a useful screening resource for identifying bioactive peptides that interact with cancer targets. The aim of this study was the evaluation of two technetium-99m tracers for angio genesis detection in melanoma model, using cyclic peguilated pentapeptide with RGD and NGR motifs conjugated with bifunctional chelator MAG3. The conjugated peptides (10 {mu}L of a {mu}g/{mu}L solution) were labeled with technetium-99m using a sodium tartrate buffer. Radiochemical evaluation was done by ITLC and confirmed by HPLC. Partition coefficient was determined and internalization assays were performed in two melanoma cells (B16F10 and SKMEL28). Biodistribution evaluation of the tracers was done in healthy animals at different times and also in mice bearing the tumor cells at 120 min post injection. Blocking studies were also conducted by co-injection of cold peptides. The conjugated showed the same profile in many evaluations. They were radiolabeled with high radiochemical purity (>97%). Both were hydrophilic, with preferential renal excretion. Tumor uptake was higher for human melanoma cells than for murinic melanoma cells, specially for {sup 99m}Tc-MAG3-PEG{sub 8}-c(RGDyK) (7.85{+-}{+-}2.34 %ID/g) at 120 min post injection. The performance of {sup 99m}Tc-MAG{sub 3}-PEG{sub 8}-c(RGDyk) was much better than NGR tracer concerning human melanoma uptake and might be considered in future investigations focusing radiotracers for melanoma diagnosis. (author)

  14. Energy-saving and emission-abatement potential of Chinese coal-fired power enterprise: A non-parametric analysis

    International Nuclear Information System (INIS)

    Wei, Chu; Löschel, Andreas; Liu, Bing

    2015-01-01

    In the context of soaring demand for electricity, mitigating and controlling greenhouse gas emissions is a great challenge for China's power sector. Increasing attention has been placed on the evaluation of energy efficiency and CO 2 abatement potential in the power sector. However, studies at the micro-level are relatively rare due to serious data limitations. This study uses the 2004 and 2008 Census data of Zhejiang province to construct a non-parametric frontier in order to assess the abatement space of energy and associated CO 2 emission from China's coal-fired power enterprises. A Weighted Russell Directional Distance Function (WRDDF) is applied to construct an energy-saving potential index and a CO 2 emission-abatement potential index. Both indicators depict the inefficiency level in terms of energy utilization and CO 2 emissions of electric power plants. Our results show a substantial variation of energy-saving potential and CO 2 abatement potential among enterprises. We find that large power enterprises are less efficient in 2004, but become more efficient than smaller enterprises in 2008. State-owned enterprises (SOE) are not significantly different in 2008 from 2004, but perform better than their non-SOE counterparts in 2008. This change in performance for large enterprises and SOE might be driven by the “top-1000 Enterprise Energy Conservation Action” that was implemented in 2006. - Highlights: • Energy-saving potential and CO 2 abatement-potential for Chinese power enterprise are evaluated. • The potential to curb energy and emission shows great variation and dynamic changes. • Large enterprise is less efficient than small enterprise in 2004, but more efficient in 2008. • The state-owned enterprise performs better than non-state-owned enterprise in 2008

  15. Exploring the limits for CO2 emission abatement in the EU power and industry sectors—Awaiting a breakthrough

    International Nuclear Information System (INIS)

    Rootzén, Johan; Johnsson, Filip

    2013-01-01

    This study assesses the prospects for presently available abatement technologies to achieve significant reductions in CO 2 emissions from large stationary sources of CO 2 in the EU up to year 2050. The study covers power generation, petroleum refining, iron and steel, and cement production. By simulating capital stock turnover, scenarios that assume future developments in the technology stock, energy intensities, fuel and production mixes, and the resulting CO 2 emissions were generated for each sector. The results confirm that the EU goal for reductions in Greenhouse Gas Emission in the sectors covered by the EU Emission Trading System, i.e., 21% reduction by 2020 as compared to the levels in 2005, is attainable with the abatement measures that are already available. However, despite the optimism regarding the potential for, and implementation of, available abatement strategies within current production processes, our results indicate that the power and industrial sectors will fail to comply with more stringent reduction targets in both the medium term (2030) and long term (2050). Deliberate exclusion from the analysis of mitigation technologies that are still in the early phases of development (e.g., CO 2 capture and storage) provides an indirect measure of the requirements for novel low-carbon technologies and production processes. - Highlights: • Explore the limits for CO 2 emission abatement within current production processes. • Analysis of scenarios for CO 2 emissions from EU power and industrial sectors 2010–2050. • Short-term (2020) emission targets are attainable with available abatement measures. • Fail to comply with more stringent reduction targets in the long term (2050). • Efforts to develop new low-carbon production processes need to be accelerated

  16. Integrated assessment of energy efficiency technologies and CO_2 abatement cost curves in China’s road passenger car sector

    International Nuclear Information System (INIS)

    Peng, Bin-Bin; Fan, Ying; Xu, Jin-Hua

    2016-01-01

    Highlights: • Energy efficiency technologies in Chinese passenger cars are classified in detail. • CO_2-reduction potential and abatement cost are analyzed for technology bundles. • Marginal abatement cost curve is established from both micro and macro perspectives. • Spark ignition, diesel and hybrid electric vehicle paths should be firstly promoted. • Technology promotion should start from the area of taxies and high-performance cars. - Abstract: Road transport is one of the main sources of energy consumption and CO_2 emissions. It is essential to conserve energy and reduce emissions by promoting energy efficiency technologies (EETs) in this sector. This study first identifies EETs for the passenger cars and then classifies them into various technology bundles. It then analyzes the CO_2-reduction potentials and emissions abatement costs of 55 type-path, 246 type-path-technology, and 465 type-path-subtechnology bundles from micro-vehicular and macro-industrial perspectives during 2010–2030, based on which marginal abatement cost (MAC) curve for China’s road passenger car sector is established. Results show that the cumulative CO_2-reduction potential of EETs on passenger cars in China during 2010–2030 is about 2698.8 Mt, but only 4% is cost-effective. The EETs with low emissions abatement costs are mainly available in the spark ignition (SI), diesel, and hybrid electric vehicle (HEV) paths on the taxis and high-performance cars, and also in the transmission, vehicle body and SI technologies on the private cars, which could be promoted at present. The technologies with large emissions reduction potential are mainly available in the plug-in hybrid electric vehicle (PHEV) and electric vehicle (EV) paths, which would be the main channels for reducing carbon emissions in the long run.

  17. Pesquisa de Campylobacter spp. em granjas e abatedouro avícolas na mesorregião metropolitana de Belém - PA

    OpenAIRE

    CHAVES, Sílvio Orlan de Castro

    2007-01-01

    As infecções de origem alimentar no homem, causadas por Campylobacter spp., resultam em grandes perdas econômicas e estão relacionadas à produção e o abate de frangos, etapas importantes na disseminação dessas bactérias. Baseando-se na importância do Campylobacter spp. na saúde pública e tendo em vista os dados constantes na literatura de que as aves comercializadas estão constantemente contaminadas com esse agente, sentiu-se a necessidade de realizar um estudo envolvendo a criaçã...

  18. estudo comparativo

    OpenAIRE

    Álvaro, Rocha

    2005-01-01

    O sítio web é um importante meio de comunicação e competitividade das universidades. Há diferentes razões para acreditar que os sítios possam variar entre universidades, mas contudo há certeza da existência de requisitos de qualidade comuns e transversais a todas. Este estudo visou avaliar, de forma quantitativa e objectiva, o cumprimento de requisitos de qualidade pelos sítios web das Universidades Portuguesas, com base nas características de alto nível da norma ISO 9126-1 que interessam aos...

  19. O gesso na indústria da construção civil: considerações econômicas sobre utilização de blocos de gesso

    OpenAIRE

    ROCHA, Carlos Augusto Laranjeira da

    2007-01-01

    O objetivo desse trabalho é um estudo dos benefícios e custos conseqüentes da utilização do gesso e seus derivados, em substituição aos materiais convencionais, na indústria da construção civil. Outro aspecto analisado é a incrementação das informações a respeito do gesso e o auxilio desse material no desenvolvimento de novos recursos e tecnologias. Foi feito um comparativo entre as vantagens e desvantagens da utilização dos produtos derivados da gipsita como material na indústria da const...

  20. ANÁLISIS COMPARATIVO DEL GENOMA MITOCONDRIAL EN GASTRÓPODOS

    Directory of Open Access Journals (Sweden)

    Moises Arquez

    2012-05-01

    Full Text Available Los genomas mitocondriales en el grupo Gastrópoda muestran altas tasas de variación entre ellos en cuanto a la organización de sus genomas lo que lo convierte en un excelente grupo modelo para el estudio de la evolución del genoma mitocondrial.  En este trabajo presentamos un análisis comparativo de los genomas mitocondriales en gastrópodos. Se calculó la composición de nucleótidos y de aminoácidos de todas las secuencias y se hizo un análisis visual comparativo de los codones de inicio y de parada. La organización del genoma se comparó calculando el número de secuencias intergénicas, la ubicación de los genes y el número de reorganizaciones génicas (“breakpoints” en comparación con la secuencia que se presume ancestral para el grupo. Para calcular si existen variaciones en las tasas de evolución molecular en el grupo, estas  últimas se calcularon utilizando el “relative rate test”. A pesar de las diferencias en el tamaño de los genomas, el número de amino acidos es mas conservado. La composicion nucleotidica y aminoacidica  es similar entre los Vetigastropoda, Ceanogastropoda y Neritimorpha en comparacion con Heterobranchia y Patellogastropoda. Los genomas mitocondriales para el grupo son muy compactos con pocas secuencias intergenicas, la unica excepción es el genoma de Patellogastropoda con 26.828 pb. Existe una alta variabilidad en cuanto a codones de inicio para los grupos Heterobranchia y Patellogastropoda y un aumento en el numero de genes reorganizados con respecto a la secuencia de O. vulgaris también para estos dos grupos. En general se rechaza la hipotesis de tasas de evolución molecular constante entre los grupos, excepto cuando se comparan los genomas de Neritimorpha y Vetigastropoda.

  1. Exploring the 'permanent forest' paradigm: might renewable commercial forest estates lead to greater net greenhouse abatement over the longer term?

    International Nuclear Information System (INIS)

    Anderson, Graeme

    2007-01-01

    Full text: Understanding permanence: A common perception exists which suggests that long term or 'permanent' tree plantings are considered a superior form of (post 1990) carbon sink, and commercial plantations (which allow for harvesting and replanting) are less useful for abatement. However, common to all forms of forest carbon sink is the issue of permanence. None of these are truly permanent stores of carbon because at any point either a fire, disease, harvest or major event can mean part of the carbon store is released. Why then the perceived bias against sink projects which allow for commercial harvesting and replanting? Let's not forget - things are getting hotter: Australian projections for climate change provide plenty of challenges for current and future forest managers. Over the next century many key forest species may have to endure conditions outside their'current growing range. This poses risks for the emergent offsets industry which needs to be actively managed. Simply planting local indigenous species alone may no longer be the only best practice. Think 'true fate of carbon': It is important that our thinking is not constrained by current rules, as these will continually be refined as our knowledge about carbon systems improves over the next century (between now and 2100 there will be 22 post-Kyoto negotiation periods). Our key focus should be in considering the 'true fate' of carbon, and the real contribution to greenhouse abatement. Policy makers need to keep this in mind, and ensure that the entire carbon life cycle is considered in their decision making. 'Standing forest' versus 'Net abatement effect': There are two effective means for forests to achieve genuine greenhouse abatement. One is the carbon sequestered and stored in the 'standing forest', the other is the greenhouse benefit (carbon flow or net abatement effect) of an ongoing and renewable supply of tree based products from the site (wood, fibre, biomass, biofuel), which replace

  2. Adoption of Emissions Abating Technologies by U.S. Electricity Producing Firms Under the SO2 Emission Allowance Market

    Science.gov (United States)

    Creamer, Gregorio Bernardo

    The objective of this research is to determine the adaptation strategies that coal-based, electricity producing firms in the United States utilize to comply with the emission control regulations imposed by the SO2 Emissions Allowance Market created by the Clean Air Act Amendment of 1990, and the effect of market conditions on the decision making process. In particular, I take into consideration (1) the existence of carbon contracts for the provision of coal that may a affect coal prices at the plant level, and (2) local and geographical conditions, as well as political arrangements that may encourage firms to adopt strategies that appear socially less efficient. As the electricity producing sector is a regulated sector, firms do not necessarily behave in a way that maximizes the welfare of society when reacting to environmental regulations. In other words, profit maximization actions taken by the firm do not necessarily translate into utility maximization for society. Therefore, the environmental regulator has to direct firms into adopting strategies that are socially efficient, i.e., that maximize utility. The SO 2 permit market is an instrument that allows each firm to reduce marginal emissions abatement costs according to their own production conditions and abatement costs. Companies will be driven to opt for a cost-minimizing emissions abatement strategy or a combination of abatement strategies when adapting to new environmental regulations or markets. Firms may adopt one or more of the following strategies to reduce abatement costs while meeting the emission constraints imposed by the SO2 Emissions Allowance Market: (1) continue with business as usual on the production site while buying SO2 permits to comply with environmental regulations, (2) switch to higher quality, lower sulfur coal inputs that will generate less SO2 emissions, or (3) adopting new emissions abating technologies. A utility optimization condition is that the marginal value of each input

  3. Estudo comparativo das habilidades sociais de dependentes e não dependentes de álcool Comparative study of social skills among alcohol abusers and non abusers

    Directory of Open Access Journals (Sweden)

    Poliana Patrício Aliane

    2006-04-01

    Full Text Available Este trabalho teve como objetivo principal avaliar e comparar diferenças nas habilidades sociais (HS de dependentes e não dependentes de álcool. Foram pesquisados 80 sujeitos, entre dependentes e não-dependentes, usuários do SUS, e usados dois instrumentos para coleta dos dados: Inventário de Habilidades Sociais (IHS e AUDIT (Alcohol Use Disorder Identification Test. Foi realizado um estudo comparativo das HS entre os grupos de dependentes e não-dependentes de álcool e álcool e outras drogas (AOD. Os resultados obtidos mostraram não existir diferença no escore do IHS entre dependentes e não-dependentes. Os homens obtiveram maior média nas habilidades de conversação e desenvoltura social e autocontrole da agressividade que as mulheres e, na amostra masculina, dependentes de álcool apresentaram maior média na habilidade de autocontrole da agressividade que dependentes de AOD. Apesar de a literatura sobre o tema discutir os déficits de HS entre dependentes, este estudo não confirmou esta hipótese.This research aims to evaluate and compare differences in Social Skills of alcohol abusers and non-abusers. Eighty people were interviewed, among alcohol abusers and non-abusers, patients of a Health Care Center (SUS. Two instruments were used to collect the data: Social Skills Inventory (ISS and AUDIT (Alcohol Use Disorder Identification Test. A Comparative study between the alcohol abusers and non-abusers including other drugs was carried out. The results showed that there is no difference between the alcohol abusers and non-abusers ISS scores. Men showed a better score in conversation and social abilities also in self-control of the aggressiveness than women did. In addiction, men addicted to alcohol showed a better score in self-control of the aggressiveness than men addicted to alcohol and other drugs. Although literature about this topic shows that the alcohol abuse have an decrease of these social skills, this research does not

  4. Estudio comparativo de alexitimia en personas institucionalizadas versus aula de mayores

    Directory of Open Access Journals (Sweden)

    Julia García-Sevilla

    2016-04-01

    Full Text Available La experiencia y regulación de las emociones son aspectos que están adquiriendo mayor importancia a la hora de entender y fomentar el bienestar y la calidad de vida de las personas mayores. El objetivo del presente estudio ha sido llevar a cabo un estudio comparativo de la alexitimia en usuarios pertenecientes a un centro institucionalizado de personas mayores y alumnos matriculados en el aula de mayores. Los participantes del estudio fueron 43 personas institucionalizadas y 48 personas pertenecientes al aula de mayores con una media de edad de 69.30 años y una desviación típica de 66.50. El instrumento utilizado fue la versión adaptada del TAS-20. Los resultados mostraron que las personas institucionalizadas puntuaban más alto en la dificultad para identificar sentimientos, dificultad para describir sentimientos así como en el patrón de pensamiento orientado a lo externo. El sexo fue indiferente en la dificultad para identificar sentimientos, en la dificultad para describir sentimientos así como en el patrón orientado a lo externo. En cuanto a la edad, se encontró una relación con la dificultad para identificar sentimientos y el patrón de pensamiento orientado a lo externo. El estudio permite concluir que la alexitimia se ve influida por el hecho de que la persona mayor se encuentre en un centro institucionalizado.

  5. Análisis comparativo de las principales Escuelas de Educación Maternal

    Directory of Open Access Journals (Sweden)

    Matilde Fernández y Fernández-Arroyo

    2013-06-01

    Full Text Available Justificación: Los programas de educación prenatal son una poderosa herramienta para aumentar la salud materno-infantil. Hoy no se conoce el enfoque educativo más eficaz. Objetivo principal: Conocer las diferencias de enfoque y metodología de las principales escuelas de educación maternal. Metodología: Revisión de las bases de datos PubMed, Embase, Lilacs, Scielo y Cochrane desde el año 2000. Revisión de las páginas web de las escuelas. Estudio de la documentación mediante el método comparativo. Análisis mediante una base de datos con el programa Excel. Resultados principales: Se analizan y comparan las 5 primeras escuelas y 10 de las nuevas escuelas emergentes. Conclusión principal: el trabajo permite conocer el enfoque conceptual y la metodología de las escuelas, lo que puede facilitar la elección a los profesionales y el diseño de investigaciones para aumentar la calidad de los programas.

  6. Estudio comparativo de la calidad de las bibliotecas universitarias españolas

    Directory of Open Access Journals (Sweden)

    Avia Aranda, Antonio

    2004-06-01

    Full Text Available This article summarizes the main results of a comparative study of the quality of the Spanish universitiy libraries, obtained through a research project directed by an interdisciplinary team making use of a new methodology, specific for comparative libraries network analysis. A set of indicators has been established from the analysis of the Spanish University Libraries Network (REBIUN statistical data, which have been later synthesized in three key factors of quality. This has allowed us to analyse the evolution of the whole group of Spanish University Libraries, identifying the quality indicators’ main relationships and establishing an homogeneous procedure for the implementation of benchmarking processes focused on quality improvements.

    En el presente artículo se resumen los principales resultados derivados de un proyecto de investigación llevado a cabo por un equipo interdisciplinar que ha desarrollado una metodología novedosa para realizar análisis comparativos de la calidad entre redes bibliotecarias. Partiendo de los datos estadísticos de la Red de Bibliotecas Universitarias Española (REBIUN se han creado un conjunto de indicadores que posteriormente se sintetizan en tres factores claves de calidad. Ello ha permitido analizar la evolución del conjunto de las bibliotecas universitarias españolas identificando las principales relaciones entre los distintos factores de calidad y estableciendo un procedimiento homogéneo para la realización de procesos de benchmarking orientados a la mejora de la calidad.

  7. Los Sistemas de Costes Convencionales y el Método ABC: Análisis Comparativo

    Directory of Open Access Journals (Sweden)

    Angel Saez Torrecilla

    1997-12-01

    Full Text Available A fin de proporcionar una mejor respuesta a los nuevos problemas a que se enfrentan sus usuarios, el carácter dinámico de la Contabilidad de Gestión se pone de manifiesto en el desarrollo de nuevas técnicas de gestión más acordes con la evolución del entorno productivo y empresarial. En este sentido, una de las principales técnicas de gestión desarrollada en la última década ha sido el modelo ARC. En el presente trabajo se realiza un análisis comparativo entre el modelo tradicional de costes completos y el ARC a través del estudio de las distintas etapas del proceso de cálculo y asignación de costes seguidas en este último modelo. In order to provide a better answer to the new problems that their users must face, the dynamic character of Management Accounting is highlighted in the development of new management techniques more suited to the evolution of a productive and managerial environment. In this sense, one of the major management accounting techniques developed over the last decade has been the ARC model. In this paper we carry out a comparative analysis between the traditional full-costing model and the ARC through the study of the different stages of cost calculation and allocation process in the latter model.

  8. Análisis comparativo de guías para el desarrollo web accesible

    Directory of Open Access Journals (Sweden)

    Luis Felipe Londoño Rojas

    2018-01-01

    Full Text Available En la actualidad los sitios web no cumplen con requerimientos mínimos de accesibilidad, lo que impide que cualquier persona sin importar sus condiciones pueda acceder a los contenidos y servicios disponibles a través de estos sitios. Este problema se da en parte porque los desarrolladores no tienen conocimientos de los criterios y pautas de accesibilidad existen-tes o no saben cómo implementarlas. Como una alternativa, en este trabajo se presenta un análisis de guías para el desarrollo accesible, donde se evalúan diferentes criterios como las discapacidades que son atendidas, el nivel de conocimientos técnico que se requiere para su comprensión y la forma como se presentan los contenidos. A partir de esta evaluación se genera un cuadro comparativo y se hace la selección de las guías que pueden ser de mayor utilidad en la creación de sitios web accesibles, lo que puede servir como un apoyo a los desarrolladores al decidir cuál guía utilizar.

  9. Efficiency and abatement costs of energy-related CO2 emissions in China: A slacks-based efficiency measure

    International Nuclear Information System (INIS)

    Choi, Yongrok; Zhang, Ning; Zhou, P.

    2012-01-01

    Highlights: ► We employ a slacks-based DEA model to estimate the energy efficiency and shadow prices of CO 2 emissions in China. ► The empirical study shows that China was not performing CO 2 -efficiently. ► The average of estimated shadow prices of CO 2 emissions is about $7.2. -- Abstract: This paper uses nonparametric efficiency analysis technique to estimate the energy efficiency, potential emission reductions and marginal abatement costs of energy-related CO 2 emissions in China. We employ a non-radial slacks-based data envelopment analysis (DEA) model for estimating the potential reductions and efficiency of CO 2 emissions for China. The dual model of the slacks-based DEA model is then used to estimate the marginal abatement costs of CO 2 emissions. An empirical study based on China’s panel data (2001–2010) is carried out and some policy implications are also discussed.

  10. Health costs caused by oil extraction air emissions and the benefits from abatement: the case of Kazakhstan

    International Nuclear Information System (INIS)

    Netalieva, Indira; Wesseler, Justus; Heijman, Wim

    2005-01-01

    The methodology and results of a cost-benefit analysis of air quality control during oil production in the Caspian Region in Kazakhstan are presented. The benefits are defined as the decrease in health costs from reduced air pollution. The health costs are the income losses which depend on the attributes of illness (duration and number of symptoms) and on respondents' characteristics such as age, education, and gender. The results are obtained by comparing two cities, one with a high rate of pollution due to oil extraction, Atyrau, and the other, Astana, without. The incremental health costs for Atyrau caused by the oil production industry are estimated to be at least 5.1 million USD per year. The annual benefits of investments into abatement technologies are at least five times higher than the virtual annual abatement costs of about 0.46 million USD

  11. Influência do estresse causado pelo transporte e método de abate sobre o rigor mortis do tambaqui (Colossoma macropomum)

    OpenAIRE

    Mendes, Joana Maia; Inoue, Luis Antonio Kioshi Aoki; Jesus, Rogério Souza

    2015-01-01

    ResumoO presente trabalho avaliou a influência do estresse pré-abate e do método de abate sobre o rigor mortis do tambaqui durante armazenamento em gelo. Foram estudadas respostas fisiológicas do tambaqui ao estresse durante o pré-abate, que foi dividido em quatro etapas: despesca, transporte, recuperação por 24 h e por 48 h. Ao final de cada etapa, os peixes foram amostrados para caracterização do estresse pré-abate por meio de análises dos parâmetros plasmáticos de glicose, lactato e amônia...

  12. Application of Primary Abatement Technology for Reduction of N2O Emmision in Petrokemija Nitric Acid Production

    Directory of Open Access Journals (Sweden)

    Ćosić, L.

    2013-01-01

    Full Text Available Industrial nitric acid production by oxidation of gaseous ammonia with Ostwald procedure produces an unwanted by-product – colorless nitrous oxide, N2O. As emission of N2O represents a very serious problem due of its huge contribution to global warming, certain measures focused on its maximum reduction should be undertaken. Minimization of N2O emission in nitric acid production can be achieved in different parts of the process flow, depending on the applied available technologies. For the abatement of N2O emissions in Petrokemija's nitric acid production processes from the list of the best available technologies chosen were primary and secondary abatement technologies. The mentioned ensures reduction of N2O by use of improved selective heterogeneous catalysts in the step of gaseous ammonia oxidation. Precious metals in the shape of gauzes are used as selective heterogeneous catalyst in primary technology, while in the case of secondary technology the Fe2 O3 catalyst on Al2O3 support in the shape of spherical pellets is chosen. Shown is the application of primary technology for the abatement of N2O in both nitric acid production facilities and their comparison with classical heterogeneous catalyst and preparation for the installation of secondary selective catalyst. N2O emissions with the application of primary technology in both production facilities were reduced from 12 kg of N2O to 7 kg of N2O per ton of pure HNO3. With the primary reduction in N2O emissions the foundation was established for further reduction with the secondary technology to the final value of 0.7 kg of N2O per ton of pure HNO3, which represents mass concentration in the tail gas below 200 mg m-3 (at n. c.. With the applied technologies for the abatement of N2O emissions in Petrokemija's nitric acid production the future prescribed emission limit value will be satisfied.

  13. Phytoremediation, a sustainable remediation technology? Conclusions from a case study. I: Energy production and carbon dioxide abatement

    International Nuclear Information System (INIS)

    Witters, N.; Mendelsohn, R.O.; Van Slycken, S.; Weyens, N.; Schreurs, E.; Meers, E.; Tack, F.; Carleer, R.; Vangronsveld, J.

    2012-01-01

    This study examines the renewable energy production of crops used for phytoremediation. Our analysis is based on a case study in the Campine region (Belgium and The Netherlands), where agricultural soils are diffusely contaminated with cadmium, lead, and zinc, with an enhanced risk for uptake of these metals in crops and leaching to the groundwater. However, the area has such a large extent (700 km 2 ) that conventional remediation is not applicable. Cultivation of crops for energy purposes on such land offers the opportunity to come up with an approach that efficiently uses contaminated agricultural land and that can be beneficial for both farmer and society. Performing a Life Cycle Analysis (LCA), we examined the energy and CO 2 abatement potential of willow (Salix spp.), silage maize (Zea mays L.), and rapeseed (Brassica napus L.) originating from contaminated land. Taking into account the marginal impact of the metals in the biomass on the energy conversion efficiency and on the potential use of the biomass and its rest products after conversion, digestion of silage maize with combustion of the contaminated digestate shows the best energetic and CO 2 abating perspectives. The replacement of cokes based electricity by willow is more efficient in CO 2 abatement than willow used in a Combined Heat and Power (CHP) unit, despite lower net energy production in the former option. Willow reaches the same energy production and same CO 2 abatement per hectare per year as silage maize when its biomass yield is respectively 13 and 8.7 Mg dm ha −1 y −1 . -- Highlights: ► We study the energy potential of Salix, Zea mays and Brassica after phytoremediation. ► The case study contains agricultural soils that are contaminated with cadmium. ► We include the impact of metals on energy conversion efficiency and rest product use. ► Higher biomass yields for Salix would make it energetically competitive with Z. mays.

  14. Abatement of fluorinated compounds using a 2.45 GHz microwave plasma torch with a reverse vortex plasma reactor

    Energy Technology Data Exchange (ETDEWEB)

    Kim, J.H.; Cho, C.H.; Shin, D.H. [Plasma Technology Research Center, National Fusion Research Institute, 814-2 Oxikdo-dong, Gunsan-city, Jeollabuk-do (Korea, Republic of); Hong, Y.C., E-mail: ychong@nfri.re.kr [Plasma Technology Research Center, National Fusion Research Institute, 814-2 Oxikdo-dong, Gunsan-city, Jeollabuk-do (Korea, Republic of); Shin, Y.W. [Plasma Technology Research Center, National Fusion Research Institute, 814-2 Oxikdo-dong, Gunsan-city, Jeollabuk-do (Korea, Republic of); School of Advanced Green Energy and Environments, Handong Global University, Heunghae-eup, Buk-gu, Pohang-city, Gyeongbuk (Korea, Republic of)

    2015-08-30

    Highlights: • We developed a microwave plasma torch with reverse vortex reactor (RVR). • We calculated a volume fraction and temperature distribution of discharge gas and waste. • The performance of reverse vortex reactor increased from 29% to 43% than conventional vortex reactor. - Abstract: Abatement of fluorinated compounds (FCs) used in semiconductor and display industries has received an attention due to the increasingly stricter regulation on their emission. We have developed a 2.45 GHz microwave plasma torch with reverse vortex reactor (RVR). In order to design a reverse vortex plasma reactor, we calculated a volume fraction and temperature distribution of discharge gas and waste gas in RVR by ANSYS CFX of computational fluid dynamics (CFD) simulation code. Abatement experiments have been performed with respect to SF{sub 6}, NF{sub 3} by varying plasma power and N{sub 2} flow rates, and FCs concentration. Detailed experiments were conducted on the abatement of NF{sub 3} and SF{sub 6} in terms of destruction and removal efficiency (DRE) using Fourier transform infrared (FTIR). The DRE of 99.9% for NF{sub 3} was achieved without an additive gas at the N{sub 2} flow rate of 150 liter per minute (L/min) by applying a microwave power of 6 kW with RVR. Also, a DRE of SF{sub 6} was 99.99% at the N{sub 2} flow rate of 60 L/min using an applied microwave power of 6 kW. The performance of reverse vortex reactor increased about 43% of NF{sub 3} and 29% of SF{sub 6} abatements results definition by decomposition energy per liter more than conventional vortex reactor.

  15. Determinants of willingness-to-pay for water pollution abatement: a point and interval data payment card application.

    Science.gov (United States)

    Mahieu, Pierre-Alexandre; Riera, Pere; Giergiczny, Marek

    2012-10-15

    This paper shows a contingent valuation exercise of pollution abatement in remote lakes. In addition to estimating the usual interval data model, it applies a point and interval statistical approach allowing for uncensored data, left-censored data, right-censored data and left- and right-censored data to explore the determinants of willingness-to-pay in a payment card survey. Results suggest that the estimations between models may diverge under certain conditions. Copyright © 2012 Elsevier Ltd. All rights reserved.

  16. Biomass for electricity in the EU-27: Potential demand, CO2 abatements and breakeven prices for co-firing

    International Nuclear Information System (INIS)

    Bertrand, Vincent; Dequiedt, Benjamin; Le Cadre, Elodie

    2014-01-01

    This paper analyses the potential of biomass-based electricity in the EU-27 countries, and interactions with climate policy and the EU ETS. We estimate the potential biomass demand from the existing power plants, and we match our estimates with the potential biomass supply in Europe. Furthermore, we compute the CO2 abatement associated with the co-firing opportunities in European coal plants. We find that the biomass demand from the power sector may be very high compared with potential supply. We also identify that co-firing can produce high volumes of CO 2 abatements, which may be two times larger than that of the coal-to-gas fuel switching. We also compute biomass and CO2 breakeven prices for co-firing. Results indicate that biomass-based electricity remains profitable with high biomass prices, when the carbon price is high: a Euros 16–24 (25–35, respectively) biomass price (per MWh prim ) for a Euros 20 (50, respectively) carbon price. Hence, the carbon price appears as an important driver, which can make profitable a high share of the potential biomass demand from the power sector, even with high biomass prices. This aims to gain insights on how biomass market may be impacted by the EU ETS and others climate policies. - Highlights: • Technical potential of biomass (demand and CO 2 abatement) in European electricity. • Calculation for co-firing and biomass power plants; comparison with potential biomass supply in EU-27 countries. • Calculation of biomass and CO 2 breakeven prices for co-firing. • Potential demand is 8–148% of potential supply (up to 80% of demand from co-firing). • High potential abatement from co-firing (up to 365 Mt/yr); Profitable co-firing with €16-24 (25–35) biomass price for €20 (50) CO 2 price

  17. Equipo comparativo para la medida de conductividad térmica de materiales cerámicos

    Directory of Open Access Journals (Sweden)

    Barea, R.

    2006-04-01

    Full Text Available Among the different techniques available for measuring thermal conductivity, the comparative method (ASTM E1225-99 is the most appropriate for porous materials. This method determines the thermal conductivity in steady state conditions in the 100 - 1300 K temperature range and for conductivities between 0.2 and 200 W/mK, respectively, depending on the equipment characteristics. In the present paper, the design and development, as well as the start up process, of an apparatus based on this method is described. Thermal conductivity data on a mullite based refractory, measured by both the laser flash and the comparative methods, are presented and comparatively discussed in order to validate the developed equipment.

    Entre las distintas técnicas de medida de la conductividad térmica de materiales, el método comparativo, recogido en la norma ASTM E1225-99, es el más adecuado para muestras porosas o materiales compuestos. Este método permite determinar conductividades térmicas en estado estacionario, en el intervalo de valores de 0,2 a 200 W/mK, y a temperaturas de ensayo en el rango 100-1300 K, dependiendo del diseño del equipo. En este trabajo se expone el diseño, desarrollo y puesta a punto de un equipo de medida de conductividad térmica basado en este método. Paralelamente, se realiza una validación del equipo mediante el estudio comparativo de los resultados obtenidos usando el equipo comparativo y la técnica del pulso láser en materiales porosos de mullita.

  18. Abatement of VOCs with Alternate Adsorption and Plasma-Assisted Regeneration: A Review

    Directory of Open Access Journals (Sweden)

    Sharmin Sultana

    2015-04-01

    Full Text Available Energy consumption is an important concern for the removal of volatile organic compounds (VOCs from waste air with non-thermal plasma (NTP. Although the combination of NTP with heterogeneous catalysis has shown to reduce the formation of unwanted by-products and improve the energy efficiency of the process, further optimization of these hybrid systems is still necessary to evolve to a competitive air purification technology. A newly developed innovative technique, i.e., the cyclic operation of VOC adsorption and NTP-assisted regeneration has attracted growing interest of researchers due to the optimized energy consumption and cost-effectiveness. This paper reviews this new technique for the abatement of VOCs as well as for regeneration of adsorbents. In the first part, a comparison of the energy consumption between sequential and continuous treatment is given. Next, studies dealing with adsorption followed by NTP oxidation are reviewed. Particular attention is paid to the adsorption mechanisms and the regeneration of catalysts with in-plasma and post-plasma processes. Finally, the influence of critical process parameters on the adsorption and regeneration steps is summarized.

  19. Abatement by Naringenin of Doxorubicin-Induced Cardiac Toxicity in Rats

    International Nuclear Information System (INIS)

    Arafa, H.M.; Abd-Ellah, M.F.; Hafez, H.F.

    2005-01-01

    Doxorubicin is one of the most active cytotoxic agents in current use. It has proven efficacy in various malignancies either alone or combined with other cytocidal agents. The clinical usefulness of the anthracycline drug has been precluded by cardiac toxicity. Many therapeutic interventions have been attempted to improve the therapeutic benefits of the drug. Few, however, have been efficacious in this setting. Purpose: We have addressed in the current study the possible protective effects of naringenin, a flavonoid known to have anti-oxidant properties, on doxorubicin induced cardiac toxicity in male Swiss albino rats. Methods: Forty male Swiss albino rats were used in this study. Naringenin (25 mg/kg body weight) was administered daily by gavage for 7 consecutive days before a cumulative single dose of doxorubicin (15 mg/kg body weight, ip). Doxorubicin induced marked biochemical alterations characteristic of cardiac toxicity including, elevated activities of serum total lactate dehydrogenase (LDH) and creatine phosphokinase (CPK), enhanced lipid peroxidation measured as malonaldehyde (MDA). The anthracycline drug has also reduced the cardiac enzymatic activities of superoxide dismutase (SOD), glutathione-Stransferase (GST) and catalase (CAT). Besides, it reduced significantly the reduced glutathione (GSH) level, but it increased the total NO content in heart tissue. Prior administration of naringenin ahead of doxorubicin challenge ameliorated all these biochemical markers. Taken together, one could conclude that naringenin has a protective role in the abatement of doxorubicin-induced cardiac toxicity that resides, at least in part, on its anti-radical effects and regulatory role on NO production

  20. Biological Monitoring and Abatement Program for the Oak Ridge K-25 Site

    Energy Technology Data Exchange (ETDEWEB)

    Kszos, L.A.; Adams, S.M.; Ashwood, T.L.; Blaylock, B.G.; Greeley, M.S.; Loar, J.M.; Peterson, M.J.; Ryon, M.G.; Smith, J.G.; Southworth, G.R. (Oak Ridge National Lab., TN (United States)); Hinzman, R.L. (Oak Ridge Research Inst., TN (United States)); Shoemaker, B.A. (Oak Ridge K-25 Site, TN (United States))

    1993-04-01

    A proposed Biological Monitoring and Abatement Program (BMAP) for the Oak Ridge K-25 Site was prepared in December 1992 as required by the renewed National Pollutant Discharge Elimination System permit that was issued on October 1, 1992. The proposed BMAP is based on results of biological monitoring conducted from 1986 to 1992 and discussions held on November 12, 1992, between staff of Martin Marietta Energy Systems, Inc. (Oak Ridge National Laboratory and the K-25 Site), and the Tennessee Department of Environment and Conservation, Department of Energy Oversight Division. The proposed BMAP consists of four tasks that reflect different but complementary approaches to evaluating the effects of K-25 Site effluents on the ecological integrity of Mitchell Branch, Poplar Creek, and the Poplar Creek embayment of the Clinch River. These tasks include (1) ambient toxicity monitoring, (2) bioaccumulation monitoring, (3) assessment of fish health, and (4) instream monitoring of biological communities. This overall BMAP plan combines established protocols with current biological monitoring techniques to assess environmental compliance and quantify ecological recovery. The BMAP will also determine whether the effluent limits established for the K-25 Site protect the designated use of the receiving streams (Mitchell Branch, Poplar Creek, and Clinch River) for growth and propagation of fish and other aquatic life. Results obtained from this biological monitoring program will also be used to document the ecological effects (and effectiveness) of remedial actions.

  1. Biological Monitoring and Abatement Program for the Oak Ridge K-25 Site

    Energy Technology Data Exchange (ETDEWEB)

    Kszos, L. A.; Adams, S. M.; Ashwood, T. L.; Blaylock, B. G.; Greeley, M. S.; Loar, J. M.; Peterson, M. J.; Ryon, M. G.; Smith, J. G.; Southworth, G. R. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Environmental Sciences Div.; Shoemaker, B. A. [Oak Ridge K-25 Site, TN (United States); Hinzman, R. L. [Oak Ridge Research Inst., TN (United States)

    1993-02-01

    A proposed Biological Monitoring and Abatement Program (BMAP) for the Oak Ridge K-25 Site was prepared in December 1992 as required by the renewed National Pollutant Discharge Elimination System permit that was issued on October 1, 1992. The proposed BMAP consists of four tasks that reflect different but complementary approaches to evaluating the effects of K-25 Site effluents on the ecological integrity of Mitchell Branch, Poplar Creek, and the Poplar Creek embayment of the Clinch River. These tasks include (1) ambient toxicity monitoring, (2) bioaccumulation monitoring, (3) assessment of fish health, and (4) instream monitoring of biological communities. This overall BMAP plan combines established protocols with current biological monitoring techniques to assess environmental compliance and quantify ecological recovery. The BMAP will also determine whether the effluent limits established for the K-25 Site protect the designated use of the receiving streams (Mitchell Branch, Poplar Creek, and Clinch River) for growth and propagation of fish and other aquatic life. Results obtained from this biological monitoring program will also be used to document the ecological effects (and effectiveness) of remedial actions.

  2. Modelling agro-forestry scenarios for ammonia abatement in the landscape

    International Nuclear Information System (INIS)

    Bealey, W J; Braban, C F; Famulari, D; Theobald, M R; Reis, S; Sutton, M A; Loubet, B; Reay, D S

    2014-01-01

    Ammonia emissions from livestock production can have negative impacts on nearby protected sites and ecosystems that are sensitive to eutrophication and acidification. Trees are effective scavengers of both gaseous and particulate pollutants from the atmosphere making tree belts potentially effective landscape features to support strategies aiming to reduce ammonia impacts. This research used the MODDAS-THETIS a coupled turbulence and deposition turbulence model, to examine the relationships between tree canopy structure and ammonia capture for three source types—animal housing, slurry lagoon, and livestock under a tree canopy. By altering the canopy length, leaf area index, leaf area density, and height of the canopy in the model the capture efficiencies varied substantially. A maximum of 27% of the emitted ammonia was captured by tree canopy for the animal housing source, for the slurry lagoon the maximum was 19%, while the livestock under trees attained a maximum of 60% recapture. Using agro-forestry systems of differing tree structures near ‘hot spots’ of ammonia in the landscape could provide an effective abatement option for the livestock industry that complements existing source reduction measures. (paper)

  3. Household Solar Photovoltaics: Supplier of Marginal Abatement, or Primary Source of Low-Emission Power?

    Directory of Open Access Journals (Sweden)

    Graham Palmer

    2013-03-01

    Full Text Available With declining system costs and assuming a short energy payback period, photovoltaics (PV should, at face value, be able to make a meaningful contribution to reducing the emission intensity of Australia’s electricity system. However, solar is an intermittent power source and households remain completely dependent on a “less than green” electricity grid for reliable electricity. Further, much of the energy impact of PV occurs outside of the conventional boundaries of PV life-cycle analyses (LCA. This paper examines these competing observations and explores the broader impacts of a high penetration of household PV using Melbourne, Victoria as a reference. It concludes that in a grid dominated by unsequestered coal and gas, PV provides a legitimate source of emission abatement at high, but declining costs, with the potential for network and peak demand support. It may be technically possible to integrate a high penetration of PV, but the economic and energy cost of accommodating high-penetration PV erodes much of the benefits. Future developments in PV, storage, and integration technologies may allow PV to take on a greater long term role, but in the time horizon usually discussed in climate policy, a large-scale expansion of household PV may hinder rather than assist deep cuts to the emission intensity of Australia’s electricity system.

  4. Abating New York City transit noise: a matter of will, not way.

    Science.gov (United States)

    Bronzaft, Arline L

    2010-01-01

    From the latter part of the 19th century, when New York City trains began to operate, until the present time, New York City's Transit Authority has received train noise complaints from riders and residents living near its transit system. The growing body of literature demonstrating the adverse effects of noise on physical and mental health raises the question as to whether transit noise is hazardous to the health of New York City's transit riders and residents living near the transit system. Several studies have examined the impacts of the noise of New York's transit system on hearing, health and learning. Despite the Transit Authority's efforts to remedy transit noise in response to complaints, the noise problem has not yet been satisfactorily ameliorated. This paper will suggest how the Transit Authority could employ techniques that could lower the noise levels of its system and benefit the health and welfare of New Yorkers. The recommendations in this paper could also apply to other cities with major transit systems where noise abatement has not been treated seriously.

  5. The economics of greenhouse gas mitigation: Insights from illustrative global abatement scenarios modelling

    International Nuclear Information System (INIS)

    Gurney, Andrew; Ahammad, Helal; Ford, Melanie

    2009-01-01

    In this paper the Global Trade and Environment Model (GTEM) and MAGICC are used to simulate a number of global emission mitigation scenarios devised by the EMF 22 Transition Scenarios group in which radiative forcing goals and the architecture of developing economies' participation in hypothetical mitigation actions are varied. This paper presents a reference case of the world economy to 2100 and analyses some key regional and global results for the various global mitigation scenarios, including emission prices, emission levels, primary energy consumption and economic growth. Modelling results suggest that a transition to a low-carbon world would require a significant decarbonisation of electricity generation without necessarily cutting the electricity output in the long run. With the uptake of hybrids and non-fossil-fuel technologies, the transport sector could make an important contribution to global abatement of greenhouse gases. Furthermore, with substantial international mitigation efforts and uptake of low- and/or zero-emission technologies, the achievement of 3.7 W/m 2 and 4.5 W/m 2 radiative forcing targets by the end of the century could occur at emission prices of up to $550/t CO 2 -e. However, achieving the 2.6 W/m 2 (overshoot) radiative forcing target would require considerably higher emission prices and an immediate global mitigation action.

  6. First annual report on the Biological Monitoring and Abatement Program at Oak Ridge National Laboratory

    International Nuclear Information System (INIS)

    Loar, J.M.; Amano, H.; Jimenez, B.D.; Kitchings, J.T.; Meyers-Schoene, L.; Mohrbacher, D.A.; Olsen, C.R.

    1992-08-01

    As a condition of the National Pollutant Discharge Elimination System (NPDES) permit issued to Oak Ridge National Laboratory (ORNL) on April 1, 1986, a Biological Monitoring and Abatement Program (BMAP) was developed for White Oak Creek (WOC); selected tributaries of WOC, including Fifth Creek, First Creek, Melton Branch, and Northwest Tributary; and the Clinch River. BMAP consists of seven major tasks that address both radiological and nonradiological contaminants in the aquatic and terrestrial environs on-site and the aquatic environs off-site. These tasks are (1) toxicity monitoring; (2) bioaccumulation monitoring of nonradiological contaminants in aquatic biota; (3) biological indicator studies; (4) instream ecological monitoring; (5) assessment of contaminants in the terrestrial environment; (6) radioecology of WOC and White Oak Lake (WOL); and (7) contaminant transport, distribution, and fate in the WOC embayment-Clinch River-Watts Bar Reservoir system. This document, the first of a series of annual reports presenting the results of BMAP, describes studies that were conducted from March through December 1986

  7. UNEP greenhouse gas abatement costing studies. Zimbabwe country study. Phase 1

    Energy Technology Data Exchange (ETDEWEB)

    Shakespeare Maya, R. [Southern Centre for Energy and Environment (Zimbabwe); Muguti, E. [Ministry of Transport and Energy. Department of Energy (Zimbabwe); Fenhann, J.; Morthorst, P.E. [Risoe National Laboratory. Systems Analysis Department (Denmark)

    1992-08-01

    The UNEP (United Nations Environment Programme) programme of Greenhouse Gas Abatement Costing Studies is intended to clarify the economic issues involved in assessing the costs of limiting emissions of greenhouse gases and to propose approaches to comparable costing studies. Phase 1 of the Zimbabwe country study describes the current energy situation in Zimbabwe related to the national economy, energy supply and demand and amounts of greenhouse gas emissions. Factors regarding the geography, (including a map illustrating the degree and character of land degradation by erosion) population, politics, international relations, land-use and management of the energy sector are dealt with in detail and the text is illustrated with data compiled from the study. It is estimated that Zimbabwe consumed 270.4 Tj of energy during 1988 and emitted 21.7 tonnes of carbon dioxide. An emission intensity of 80.2 tonnes/Tj for the whole economy and 63.6 tonnes/Tj for electric power generation alone was calculated. Forecasting for the year 2020 estimated carbon dioxide emission intensities of 73.5 tonnes/Tj for the whole economy and 43.7 tonnes for power generation. Net carbon dioxide emissions are predicted to be 30-42 tonnes during 2020. (AB).

  8. Biological Monitoring and Abatement Program for the Oak Ridge K-25 Site

    International Nuclear Information System (INIS)

    Kszos, L.A.; Adams, S.M.; Ashwood, T.L.; Blaylock, B.G.; Greeley, M.S.; Loar, J.M.; Peterson, M.J.; Ryon, M.G.; Smith, J.G.; Southworth, G.R.; Shoemaker, B.A.; Hinzman, R.L.

    1993-02-01

    A proposed Biological Monitoring and Abatement Program (BMAP) for the Oak Ridge K-25 Site was prepared in December 1992 as required by the renewed National Pollutant Discharge Elimination System permit that was issued on October 1, 1992. The proposed BMAP consists of four tasks that reflect different but complementary approaches to evaluating the effects of K-25 Site effluents on the ecological integrity of Mitchell Branch, Poplar Creek, and the Poplar Creek embayment of the Clinch River. These tasks include (1) ambient toxicity monitoring, (2) bioaccumulation monitoring, (3) assessment of fish health, and (4) instream monitoring of biological communities. This overall BMAP plan combines established protocols with current biological monitoring techniques to assess environmental compliance and quantify ecological recovery. The BMAP will also determine whether the effluent limits established for the K-25 Site protect the designated use of the receiving streams (Mitchell Branch, Poplar Creek, and Clinch River) for growth and propagation of fish and other aquatic life. Results obtained from this biological monitoring program will also be used to document the ecological effects (and effectiveness) of remedial actions

  9. Modeling for waste management associated with environmental-impact abatement under uncertainty.

    Science.gov (United States)

    Li, P; Li, Y P; Huang, G H; Zhang, J L

    2015-04-01

    Municipal solid waste (MSW) treatment can generate significant amounts of pollutants, and thus pose a risk on human health. Besides, in MSW management, various uncertainties exist in the related costs, impact factors, and objectives, which can affect the optimization processes and the decision schemes generated. In this study, a life cycle assessment-based interval-parameter programming (LCA-IPP) method is developed for MSW management associated with environmental-impact abatement under uncertainty. The LCA-IPP can effectively examine the environmental consequences based on a number of environmental impact categories (i.e., greenhouse gas equivalent, acid gas emissions, and respiratory inorganics), through analyzing each life cycle stage and/or major contributing process related to various MSW management activities. It can also tackle uncertainties existed in the related costs, impact factors, and objectives and expressed as interval numbers. Then, the LCA-IPP method is applied to MSW management for the City of Beijing, the capital of China, where energy consumptions and six environmental parameters [i.e., CO2, CO, CH4, NOX, SO2, inhalable particle (PM10)] are used as systematic tool to quantify environmental releases in entire life cycle stage of waste collection, transportation, treatment, and disposal of. Results associated with system cost, environmental impact, and the related policy implication are generated and analyzed. Results can help identify desired alternatives for managing MSW flows, which has advantages in providing compromised schemes under an integrated consideration of economic efficiency and environmental impact under uncertainty.

  10. Oak Ridge Y-12 Plant biological monitoring and abatement program (BMAP) plan

    Energy Technology Data Exchange (ETDEWEB)

    Adams, S.M.; Brandt, C.C.; Cicerone, D.S. [and others

    1998-02-01

    The proposed Biological Monitoring and Abatement Program (BMAP) for East Fork Poplar Creek (EFPC) at the Oak Ridge Y-12 Plant, as described, will be conducted for the duration of the National Pollutant Discharge Elimination System permit issued for the Y-12 Plant on April 28, 1995, and which became effective July 1, 1995. The basic approach to biological monitoring used in this program was developed by the staff in the Environmental Sciences Division at the Oak Ridge National Laboratory at the request of Y-12 Plant personnel. The proposed BMAP plan is based on results of biological monitoring conducted since 1985. Details of the specific procedures used in the current routine monitoring program are provided, but experimental designs for future studies are described in less detail. The overall strategy used in developing this plan was, and continues to be, to use the results obtained from each task to define the scope of future monitoring efforts. Such efforts may require more intensive sampling than initially proposed in some areas or a reduction in sampling intensity in others. By using the results of previous monitoring efforts to define the current program and to guide them in the development of future studies, an effective integrated monitoring program has been developed to assess the impacts of the Y-12 Plant operation on the biota of EFPC and to document the ecological effects of remedial actions.

  11. Pollution abatement from road transport: cross-sectoral implications, climate co-benefits and behavioural change

    International Nuclear Information System (INIS)

    Oxley, T.; Elshkaki, A.; Kwiatkowski, L.; Castillo, A.; Scarbrough, T.; ApSimon, H.

    2012-01-01

    With the abatement potential of end-of-pipe technologies for road transport becoming increasingly marginal, and with greater emissions reductions still needed in order to reduce pollution, alternative strategies involving behavioural change and choices between fossil fuelled or low carbon vehicles becomes more important. The environmental requirements include local air quality objectives, meeting national emissions ceilings to limit transboundary effects, and to aspire to significant reductions in greenhouse gas emissions. In this paper we use the BRUTAL sub-model of the UK integrated Assessment Model (UKIAM) to investigate a selection of alternative strategies including downsizing of cars, switching from petrol to diesel, and the introduction of electric, bio-fuelled or hydrogen vehicles into the fleet, relative to a business-as-usual projection for 2020. Projected impacts upon air quality limit values, national emissions ceilings and CO 2 emissions are assessed in relation to local, national and international objectives. We discuss related life-cycle impacts, implications for infrastructure, and potential impacts upon emissions from other sectors in order to highlight the full potential implications of the different strategies within the context of changes resulting from other policy developments at different scales.

  12. Biological Monitoring and Abatement Program for the Oak Ridge K-25 Site

    International Nuclear Information System (INIS)

    Kszos, L.A.; Adams, S.M.; Ashwood, T.L.; Blaylock, B.G.; Greeley, M.S.; Loar, J.M.; Peterson, M.J.; Ryon, M.G.; Smith, J.G.; Southworth, G.R.; Hinzman, R.L.; Shoemaker, B.A.

    1993-04-01

    A proposed Biological Monitoring and Abatement Program (BMAP) for the Oak Ridge K-25 Site was prepared in December 1992 as required by the renewed National Pollutant Discharge Elimination System permit that was issued on October 1, 1992. The proposed BMAP is based on results of biological monitoring conducted from 1986 to 1992 and discussions held on November 12, 1992, between staff of Martin Marietta Energy Systems, Inc. (Oak Ridge National Laboratory and the K-25 Site), and the Tennessee Department of Environment and Conservation, Department of Energy Oversight Division. The proposed BMAP consists of four tasks that reflect different but complementary approaches to evaluating the effects of K-25 Site effluents on the ecological integrity of Mitchell Branch, Poplar Creek, and the Poplar Creek embayment of the Clinch River. These tasks include (1) ambient toxicity monitoring, (2) bioaccumulation monitoring, (3) assessment of fish health, and (4) instream monitoring of biological communities. This overall BMAP plan combines established protocols with current biological monitoring techniques to assess environmental compliance and quantify ecological recovery. The BMAP will also determine whether the effluent limits established for the K-25 Site protect the designated use of the receiving streams (Mitchell Branch, Poplar Creek, and Clinch River) for growth and propagation of fish and other aquatic life. Results obtained from this biological monitoring program will also be used to document the ecological effects (and effectiveness) of remedial actions

  13. Photocatalytic NO{sub x} abatement. Theory, applications, current research, and limitations

    Energy Technology Data Exchange (ETDEWEB)

    Bloh, Jonathan Z. [DECHEMA Research Institute, Frankfurt am Main (Germany)

    2017-01-15

    Nitrogen oxides are one of the major air pollutants that threaten our air quality and health. As a consequence, increasingly stricter regulations are in place forcing action to reduce the concentration of these dangerous compounds. Conventional methods of reducing the NO{sub x} pollution level are reducing the emission directly at the source or restrictive measures such as low emission zones. However, there are recent reports questioning the efficacy of the strategy to reduce ambient NO{sub x} levels solely by reducing their emissions and existing threshold values are still frequently exceeded in many European cities. Semiconductor photocatalysis presents an appealing alternative capable of removing NO{sub x} and other air pollutants from the air once they have already been released and dispersed. Recent field tests have shown that a reduction of a few percent in NO{sub x} values is possible with available photocatalysts. Current research focuses on further increasing the catalysts' efficacy as well as their selectivity to suppress the formation of undesired by-products. Especially using these improved materials, photocatalytic NO{sub x} abatement could prove a very valuable contributor to better air quality.

  14. Oak Ridge Y-12 Plant biological monitoring and abatement program (BMAP) plan

    International Nuclear Information System (INIS)

    Adams, S.M.; Brandt, C.C.; Cicerone, D.S.

    1998-02-01

    The proposed Biological Monitoring and Abatement Program (BMAP) for East Fork Poplar Creek (EFPC) at the Oak Ridge Y-12 Plant, as described, will be conducted for the duration of the National Pollutant Discharge Elimination System permit issued for the Y-12 Plant on April 28, 1995, and which became effective July 1, 1995. The basic approach to biological monitoring used in this program was developed by the staff in the Environmental Sciences Division at the Oak Ridge National Laboratory at the request of Y-12 Plant personnel. The proposed BMAP plan is based on results of biological monitoring conducted since 1985. Details of the specific procedures used in the current routine monitoring program are provided, but experimental designs for future studies are described in less detail. The overall strategy used in developing this plan was, and continues to be, to use the results obtained from each task to define the scope of future monitoring efforts. Such efforts may require more intensive sampling than initially proposed in some areas or a reduction in sampling intensity in others. By using the results of previous monitoring efforts to define the current program and to guide them in the development of future studies, an effective integrated monitoring program has been developed to assess the impacts of the Y-12 Plant operation on the biota of EFPC and to document the ecological effects of remedial actions

  15. The economics of particulate pollution abatement technologies for wood-waste-fired combustors

    International Nuclear Information System (INIS)

    Ismail, A.; Stevenson, D.H.

    1991-07-01

    A study was conducted to quantify the impact of new and improved particulate abatement equipment (PAE) on the economics of new and existing wood waste combustion systems. The operating characteristics of current PAE technology are summarized and the basis for cost estimates is established. The technologies include multicyclone collectors, wet scrubbers, fabric filter baghouses, electrostatic precipitators, and new versus retrofit installations. Capital costs were determined for 4 generic types of PAE and 4 cases for each PAE type according to GJ/h in steam enthalpy. Cost information was developed for wood waste energy systems with and without PAE. In the cost analysis, a hypothetical steam selling price is determined which will give a 25% return on pretax cash flow over a 20-year period. Additional costs of the PAE are applied to the energy system cash flows and the impact on average annual return is calculated. Results indicate reductions in internal rate of return of 3-6% for most PAE systems. 54 refs., 2 figs., 12 tabs

  16. Irreversible membrane fouling abatement through pre-deposited layer of hierarchical porous carbons

    KAUST Repository

    Hamad, Juma

    2014-11-01

    In this work, dual-templated hierarchical porous carbons (HPCs), produced from a coupled ice-hard templating approach, are shown to be a highly effective solution to the commonly occurring problem of irreversible fouling of low-pressure membranes used for pre-treatment in wastewater reuse. For the first time, dual-templated HPCs, along with their respective counterparts - single-templated meso-porous carbon (MPCs) (without macropores) - are tested in terms of their fouling reduction capacity and ability to remove different effluent organic matter fractions present in wastewater and compared with a commercially available powdered activated carbon (PAC). The synthesized HPCs provided exceptional fouling abatement, a 4-fold higher fouling reduction as compared to the previously reported best performing commercial PAC and ~2.5-fold better fouling reduction than their respective mesoporous counterpart. Thus, it is shown that not only mesoporosity, but macroporosity is also necessary to achieve high fouling reduction, thus emphasizing the need for dual templating. In the case of HPCs, the pre-deposition technique is also found to outperform the traditional sorbent-feed mixing approach, mainly in terms of removal of fouling components. Based on their superior performance, a high permeability (ultra-low-pressure) membrane consisting of the synthesized HPC pre-deposited on a large pore size membrane support (0.45μm membrane), is shown to give excellent pre-treatment performance for wastewater reuse application. © 2014 Elsevier Ltd.

  17. The emission abatement policy paradox in Australia: evidence from energy-emission nexus.

    Science.gov (United States)

    Ahmed, Khalid; Ozturk, Ilhan

    2016-09-01

    This paper attempts to investigate the emissions embodied in Australia's economic growth and disaggregate primary energy sources used for electricity production. Using time series data over the period of 1990-2012, the ARDL bounds test approach to cointegration technique is applied to test the long-run association among the underlying variables. The regression results validate the long-run equilibrium relationship among all vectors and confirm that CO2 emissions, economic growth, and disaggregate primary energy consumption impact each other in the long-run path. Afterwards, the long- and short-run analyses are conducted using error correction model. The results show that economic growth, coal, oil, gas, and hydro energy sources have positive and statistically significant impact on CO2 emissions both in long and short run, with an exception of renewables which has negative impact only in the long run. The results conclude that Australia faces wide gap between emission abatement policies and targets. The country still relies on emission intensive fossil fuels (i.e., coal and oil) to meet the indigenous electricity demand.

  18. Injection of alkaline ashes into underground coal mines for acid mine drainage abatement

    International Nuclear Information System (INIS)

    Aljoe, W.W.

    1996-01-01

    The injection of alkaline coal combustion waste products into abandoned underground coal mines for acid mine drainage (AMD) abatement has obvious conceptual appeal. This paper summarizes the findings of the baseline hydrogeologic and water quality evaluations at two sites--one in West Virginia and one in Maryland--where field demonstrations of the technique are being pursued in cooperative efforts among State and Federal agencies and/or private companies. The West Virginia site produces severe AMD from three to seven AMD sources that are spaced over about a 1.2 km stretch of the down-dip side of the mine workings. By completely filling the most problematic portion of the mine workings with coal combustion ashes, the State expects that the costs and problems associated with AMD treatment will be greatly reduced. At the Maryland site, it is expected that the AMD from a relatively small target mine will be eliminated completely by filling the entire mine void with a grout composed of a mixture of fly ash, fluidized-bed combustion ash, and flue gas desulfurization sludge. This project will also demonstrate the potential cost-effectiveness of the technique at other sites, both for the purpose of AMD remediation and control of land subsidence

  19. A Study on Portfolio of Domestic Policies and Measures for GHG emission Abatement

    Energy Technology Data Exchange (ETDEWEB)

    Lim, J.K. [Korea Energy Economics Institute, Euiwang (Korea)

    2001-11-01

    After the climate change negotiation reaches an agreement in COP7, the next main issue to be addressed is the way of involvement of developing countries in emission abatement commitments and the development of domestic policies and measures to achieve GHG emission reduction target. Many Annex I countries have developed and implemented policies and measures to achieve its quantified GHG emission reduction target. The purpose of this paper is to propose a portfolio of policies and measures, that is, which policies and measures Korea will have to take in preparing future commitment for GHG emission reduction as well as in strengthening mitigation of climate change. Various policies and measures can be used, such as regulations, economic instruments, and covenants, etc., but it is desirable to implement them in some portfolio, taking advantage of their characteristics. Among the possible policies and measures, this study found that economic instruments such as carbon tax and domestic emissions trading have attracted considerable interest recently due to their cost effectiveness. This study also found that, in practice, many developed countries have used these policy instruments in achieving their quantified GHG emission reduction target. In order to develop a portfolio of policies and measures, the comprehension of the features of each policy and measure and the synergetic reconciliation with other objectives than climate change is important. (author). 82 refs., 11 figs., 31 tabs.

  20. Top-down or bottom-up modelling. An application to CO2 abatement

    International Nuclear Information System (INIS)

    Laroui, F.; Van Leeuwen, M.J.

    1995-06-01

    In four articles a comparison is made of bottom-up, or engineers'' models, and top-down models, which comprise macro-econometric models, computable general equilibrium models and also models in the system dynamics tradition. In the first article the history of economic modelling is outlined. In the second article the multi-sector macro-economic Computable General Equilibrium model for the Netherlands is described. It can be used to study the long-term effects of fiscal policy measures on economic and environmental indicators, in particular the effects on the level of CO2-emissions. The aim of article 3 is to describe the structure of the electricity supply industry in the UK and how it can be represented in a bottom-up sub-model within a more general E3 sectoral model of the UK economy. The objective of the last paper (4) is mainly a methodological discussion about integrating top-down and bottom-up models which can be used to assess CO2 abatement policies impacts on economic activity

  1. Abating New York city transit noise: A matter of will, not way

    Directory of Open Access Journals (Sweden)

    Arline L Bronzaft

    2010-01-01

    Full Text Available From the latter part of the 19 th century, when New York City trains began to operate, until the present time, New York City′s Transit Authority has received train noise complaints from riders and residents living near its transit system. The growing body of literature demonstrating the adverse effects of noise on physical and mental health raises the question as to whether transit noise is hazardous to the health of New York City′s transit riders and residents living near the transit system. Several studies have examined the impacts of the noise of New York′s transit system on hearing, health and learning. Despite the Transit Authority′s efforts to remedy transit noise in response to complaints, the noise problem has not yet been satisfactorily ameliorated. This paper will suggest how the Transit Authority could employ techniques that could lower the noise levels of its system and benefit the health and welfare of New Yorkers. The recommendations in this paper could also apply to other cities with major transit systems where noise abatement has not been treated seriously.

  2. A meta-analysis of the greenhouse gas abatement of bioenergy factoring in land use changes.

    Science.gov (United States)

    El Akkari, M; Réchauchère, O; Bispo, A; Gabrielle, B; Makowski, D

    2018-06-04

    Non-food biomass production is developing rapidly to fuel the bioenergy sector and substitute dwindling fossil resources, which is likely to impact land-use patterns worldwide. Recent publications attempting to factor this effect into the climate mitigation potential of bioenergy chains have come to widely variable conclusions depending on their scope, data sources or methodology. Here, we conducted a first of its kind, systematic review of scientific literature on this topic and derived quantitative trends through a meta-analysis. We showed that second-generation biofuels and bioelectricity have a larger greenhouse gas (GHG) abatement potential than first generation biofuels, and stand the best chances (with a 80 to 90% probability range) of achieving a 50% reduction compared to fossil fuels. Conversely, directly converting forest ecosystems to produce bioenergy feedstock appeared as the worst-case scenario, systematically leading to negative GHG savings. On the other hand, converting grassland appeared to be a better option and entailed a 60% chance of halving GHG emissions compared to fossil energy sources. Since most climate mitigation scenarios assume still larger savings, it is critical to gain better insight into land-use change effects to provide a more realistic estimate of the mitigation potential associated with bioenergy.

  3. Photocatalytic NO_x abatement. Theory, applications, current research, and limitations

    International Nuclear Information System (INIS)

    Bloh, Jonathan Z.

    2017-01-01

    Nitrogen oxides are one of the major air pollutants that threaten our air quality and health. As a consequence, increasingly stricter regulations are in place forcing action to reduce the concentration of these dangerous compounds. Conventional methods of reducing the NO_x pollution level are reducing the emission directly at the source or restrictive measures such as low emission zones. However, there are recent reports questioning the efficacy of the strategy to reduce ambient NO_x levels solely by reducing their emissions and existing threshold values are still frequently exceeded in many European cities. Semiconductor photocatalysis presents an appealing alternative capable of removing NO_x and other air pollutants from the air once they have already been released and dispersed. Recent field tests have shown that a reduction of a few percent in NO_x values is possible with available photocatalysts. Current research focuses on further increasing the catalysts' efficacy as well as their selectivity to suppress the formation of undesired by-products. Especially using these improved materials, photocatalytic NO_x abatement could prove a very valuable contributor to better air quality.

  4. First annual report on the Biological Monitoring and Abatement Program at Oak Ridge National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Loar, J. M. [ed.; Adams, S. M.; Blaylock, B. G.; Boston, H. L.; Frank, M. L.; Garten, C. T.; Houston, M. A.; Kimmel, B. L.; Ryon, M. G.; Smith, J. G.; Southworth, G. R.; Stewart, A. J.; Walton, B. T.; Berry, J. B.; Talmage, S. S. [Oak Ridge National Lab., TN (United States); Amano, H. [JAERI, Tokai Res., Establishment, Ibari-Ken (Japan); Jimenez, B. D. [School of Pharmacy, Univ. of Puerto Rico (San Juan); Kitchings, J. T. [ERCE, Denver, CO (United States); Meyers-Schoene, L. [Advanced Sciences, Inc., Fernald, OH (United States); Mohrbacher, D. A. [Univ. of Tennessee, Knoxville, TN (United States); Olsen, C. R. [USDOE Office of Energy Research, Washington, DC (United States). Office of Health and Environmental Research

    1992-08-01

    As a condition of the National Pollutant Discharge Elimination System (NPDES) permit issued to Oak Ridge National Laboratory (ORNL) on April 1, 1986, a Biological Monitoring and Abatement Program (BMAP) was developed for White Oak Creek (WOC); selected tributaries of WOC, including Fifth Creek, First Creek, Melton Branch, and Northwest Tributary; and the Clinch River. BMAP consists of seven major tasks that address both radiological and nonradiological contaminants in the aquatic and terrestrial environs on-site and the aquatic environs off-site. These tasks are (1) toxicity monitoring; (2) bioaccumulation monitoring of nonradiological contaminants in aquatic biota; (3) biological indicator studies; (4) instream ecological monitoring; (5) assessment of contaminants in the terrestrial environment; (6) radioecology of WOC and White Oak Lake (WOL); and (7) contaminant transport, distribution, and fate in the WOC embayment-Clinch River-Watts Bar Reservoir system. This document, the first of a series of annual reports presenting the results of BMAP, describes studies that were conducted from March through December 1986.

  5. External costs from electricity generation of China up to 2030 in energy and abatement scenarios

    International Nuclear Information System (INIS)

    Zhang, Qingyu; Weili, Tian; Yumei, Wei; Yingxu, Chen

    2007-01-01

    This paper presents estimated external costs of electricity generation in China under different scenarios of long-term energy and environmental policies. Long-range Energy Alternatives Planning (LEAP) software is used to develop a simple model of electricity demand and to estimate gross electricity generation in China up to 2030 under these scenarios. Because external costs for unit of electricity from fossil fuel will vary in different government regulation periods, airborne pollutant external costs of SO 2 , NO x , PM 10 , and CO 2 from fired power plants are then estimated based on emission inventories and environmental cost for unit of pollutants, while external costs of non-fossil power generation are evaluated with external cost for unit of electricity. The developed model is run to study the impact of different energy efficiency and environmental abatement policy initiatives that would reduce total energy requirement and also reduce external costs of electricity generation. It is shown that external costs of electricity generation may reduce 24-55% with three energy policies scenarios and may further reduce by 20.9-26.7% with two environmental policies scenarios. The total reduction of external costs may reach 58.2%. (author)

  6. A breakthrough in the technical dust abatement in the mining operations of RAG; Durchbruch in der technischen Staubbekaempfung der RAG-Abbaubetriebe

    Energy Technology Data Exchange (ETDEWEB)

    Renner, Klaus-Peter [Bezirksregierung Arnsberg, Gelsenkrichen (Germany). Dezernat 62; Suedhofer, Frank [RAG Aktiengesellschaft, Bottrop (Germany). Servicebereich Belegschaft - BB S1 Ergonomie/Umgebungseinfluesse

    2010-02-15

    In the years 2005 to 2007, the dust abatement in the mining operations of RAG AG (Bottrop, Federal Republic of Germany) fundamentally is regulated and standardised without a distinction between primary and secondary measures. In the contribution under consideration the authors report on measures and effects of the optimization of dust abatement in workings of the German coal mining. Positive developments of the dust load for the employees are stated on the basis of operational data.

  7. Nitrous Oxide Abatement Coupled with Biopolymer Production As a Model GHG Biorefinery for Cost-Effective Climate Change Mitigation.

    Science.gov (United States)

    Frutos, Osvaldo D; Cortes, Irene; Cantera, Sara; Arnaiz, Esther; Lebrero, Raquel; Muñoz, Raúl

    2017-06-06

    N 2 O represents ∼6% of the global greenhouse gas emission inventory and the most important O 3 -depleting substance emitted in this 21st century. Despite its environmental relevance, little attention has been given to cost-effective and environmentally friendly N 2 O abatement methods. Here we examined, the potential of a bubble column (BCR) and an internal loop airlift (ALR) bioreactors of 2.3 L for the abatement of N 2 O from a nitric acid plant emission. The process was based on the biological reduction of N 2 O by Paracoccus denitrificans using methanol as a carbon/electron source. Two nitrogen limiting strategies were also tested for the coproduction of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) coupled with N 2 O reduction. High N 2 O removal efficiencies (REs) (≈87%) together with a low PHBV cell accumulation were observed in both bioreactors in excess of nitrogen. However, PHBV contents of 38-64% were recorded under N limiting conditions along with N 2 O-REs of ≈57% and ≈84% in the ALR and BCR, respectively. Fluorescence in situ hybridization analyses showed that P. denitrificans was dominant (>50%) after 6 months of experimentation. The successful abatement of N 2 O concomitant with PHBV accumulation confirmed the potential of integrating biorefinery concepts into biological gas treatment for a cost-effective GHG mitigation.

  8. Oak Ridge National Laboratory Biological Monitoring and Abatement Program for White Oak Creek Watershed and the Clinch River

    Energy Technology Data Exchange (ETDEWEB)

    Loar, J.M.; Adams, S.M.; Allison, L.J.; Blaylock, B.G.; Boston, H.L.; Huston, M.A.; Kimmel, B.L.; Smith, J.G.; Southworth, G.R.; Stewart, A.J.; Walton, B.T.; Kitchings, J.T.; Olsen, C.R.

    1991-09-01

    On April 1, 1986, a National Pollutant Discharge Elimination System (NPDES) permit was issued for the Oak Ridge National Laboratory (ORNL) (EPA 1986). As specified in Part 3: Special Conditions (Item H) of the permit, a plan for biological monitoring of the Clinch River, White Oak Creek (WOC), Northwest Tributary (NWT) of WOC, Melton Branch (MB), Fifth Creek, and First Creek shall be submitted for approval to the US Environmental Protection Agency (EPA) and the Tennessee Department of Health and Environment (TDHE) within 90 days of the effective date of the permit. The plan, which is referred to in Part 3 (H) of the permit as the Biological Monitoring Plan and Abatement Program (BMPAP), describes characterization monitoring studies to be conducted for the duration of the permit (5 years). In order to be consistent with the terminology used for the Biological Monitoring and Abatement Programs for the Oak Ridge Y-12 Plan and the Oak Ridge K-25 Plant, BMPAP will subsequently be referred to as the Biological Monitoring and Abatement Program (BMAP). The proposed BMAP outlined in this document is based on preliminary discussions held on December 9, 1985, between staff of Martin Marietta Energy Systems, Inc. (ORNL and Central Management), the US Department of Energy (DOE), EPA, and TDHE. 232 refs., 11 figs., 7 tabs.

  9. Oak Ridge National Laboratory Biological Monitoring and Abatement Program for White Oak Creek Watershed and the Clinch River

    International Nuclear Information System (INIS)

    Loar, J.M.; Adams, S.M.; Allison, L.J.; Blaylock, B.G.; Boston, H.L.; Huston, M.A.; Kimmel, B.L.; Smith, J.G.; Southworth, G.R.; Stewart, A.J.; Walton, B.T.; Kitchings, J.T.; Olsen, C.R.

    1991-09-01

    On April 1, 1986, a National Pollutant Discharge Elimination System (NPDES) permit was issued for the Oak Ridge National Laboratory (ORNL) (EPA 1986). As specified in Part 3: Special Conditions (Item H) of the permit, a plan for biological monitoring of the Clinch River, White Oak Creek (WOC), Northwest Tributary (NWT) of WOC, Melton Branch (MB), Fifth Creek, and First Creek shall be submitted for approval to the US Environmental Protection Agency (EPA) and the Tennessee Department of Health and Environment (TDHE) within 90 days of the effective date of the permit. The plan, which is referred to in Part 3 (H) of the permit as the Biological Monitoring Plan and Abatement Program (BMPAP), describes characterization monitoring studies to be conducted for the duration of the permit (5 years). In order to be consistent with the terminology used for the Biological Monitoring and Abatement Programs for the Oak Ridge Y-12 Plan and the Oak Ridge K-25 Plant, BMPAP will subsequently be referred to as the Biological Monitoring and Abatement Program (BMAP). The proposed BMAP outlined in this document is based on preliminary discussions held on December 9, 1985, between staff of Martin Marietta Energy Systems, Inc. (ORNL and Central Management), the US Department of Energy (DOE), EPA, and TDHE. 232 refs., 11 figs., 7 tabs

  10. Feasibility study on improving SO/sub 2/ abatement economics through improvements in byproduct utilization. Final report. 2 Volumes

    Energy Technology Data Exchange (ETDEWEB)

    1984-01-17

    This study was undertaken to assess the technical feasibility of improving SO/sub 2/ abatement economics through improvements in byproduct utilization, and to recommend the most appropriate strategy for fostering the development and commericalization of such technology. Existing byproduct technology was reviewed and the potential for new technology assessed. This was done by a literature review and a survey of individuals and organizations actively engaged in this area. The assessment is confined to technical aspects only. This phase of the study concludes that there is a wide range of abatement byproduct technology, at various stages of development, which if appropriately exploited, offers the potential of improving byproduct utility and value, and hence the economics of Canadian SO/sub 2/ abatement. The second phase of this study addresses the problem of the most effective strategy for ensuring the development and commercialization of appropriate byproduct technology. This is based on discussions with individuals and organizations involved in the field, and assessment of the motivation and potential effectiveness of alternative approaches within the context of a diverse Canadian industry, the technology status in Canada and the national need. Includes 51-page bibliography. 400 refs., 14 tabs.

  11. Qual a percepção do empresário sobre o Goodwill na venda do seu negócio?

    OpenAIRE

    Oliveira, Cristiane Sobral de

    2015-01-01

    O presente estudo procurou conhecer o Goodwill e os assuntos a qual o envolve, através da metodologia, baseada em um estudo de caso comparativo múltiplo, que verifica a percepção do empresário sobre o Goodwill na venda do seu negócio. O estudo foi desenvolvido, entre os conceitos a qual abrange diversos autores e um questionário com perguntas e respostas objetivas (constituídas através de uma tabela estruturada nos conceitos do estudo), que envolvem duas empresas selecionadas por conveniência...

  12. ESTUDO COMPARATIVO DA COMPETITIVIDADE DAS EMPRESAS DE MÁQUINAS FERRAMENTAS BRASILEIRAS: ANÁLISE MULTICRITÉRIOS

    OpenAIRE

    Sanches, João Carlos Santiago

    2007-01-01

    O principal objetivo desta dissertação foi analisar por meio de estudo comparativo, o posicionamento competitivo de três máquinas ferramentas multitarefas. As hipóteses iniciais partiram das seguintes suposições: a) a indústria nacional de máquinas ferramentas esta sendo penalizada pela política industrial praticada pelo governo federal; e b) a importância relativa atribuída aos elementos multicriteriais das especificações das máquinas nacionais quando demonstram tendências elevadas, nem semp...

  13. Estudio comparativo entre la comunicación en presencia y la comunicación virtual en Facebook

    OpenAIRE

    Bermeo Viteri, Adriana Elizabeth; Toro Suárez, Lizza Paulina

    2012-01-01

    La presente tesis es un estudio comparativo entre la Comunicación en presencia y la Comunicación virtual en Facebook. El objetivo del estudio es aportar a la comprensión de los mencionados tipos de comunicación a través del análisis en una red social. Las características fueron estudiadas en jóvenes de Quito, esto para precisar significados y códigos lingüísticos que se evidencian tanto en una conversación oral en presencia, ...

  14. RIESGOS OBSTETRICOS EN EL EMBARAZO ADOLESCENTE: ESTUDIO COMPARATIVO DE RESULTADOS OBSTETRICOS Y PERINATALES CON PACIENTES EMBARAZADAS ADULTAS

    OpenAIRE

    Díaz,Angélica; Sanhueza R,Pablo; Yaksic B,Nicole

    2002-01-01

    Se presenta un estudio retrospectivo y comparativo, a través de una muestra obtenida en forma aleatoria, de la evolución materna y resultados obstétricos de las pacientes adolescentes embarazadas atendidas en el Servicio de Obstetricia y Ginecología del Hospital Salvador, en comparación con un grupo control obtenido en el mismo Servicio y período de estudio. Se analizan diversas variables, y se hace una completa revisión del tema en base a la literatura nacional y extranjera.

  15. Un Análisis Comparativo y Discursivo España e India de la Publicidad de Seguros

    OpenAIRE

    Kumar, Dinesh

    2015-01-01

    El objetivo principal de este estudio de investigación es hacer la exploración de los elementos en los que las empresas internacionales hacen uso del discurso de persuasión para convencer al consumidor del importante papel de los seguros en nuestra vida. A esto le sigue un estudio comparativo entre España e India que demuestra los elementos persuasivos que emplean dos países diferentes para averiguar si los elementos culturales, sociales y discursivos son similares o distintos en la publicid...

  16. Análisis comparativo de distintas toolkits para el reconocimiento biométrico de personas mediante voz

    OpenAIRE

    Ruíz, Silvia; Miranda, Ernesto; Herlein, Mauro; Etchart, Graciela; Alvez, Carlos E.

    2017-01-01

    El objetivo de este trabajo es realizar un análisis comparativo de distintas toolkits para el reconocimiento biométrico de personas mediante voz. Hoy en día los sistemas de identificación de personas se han convertido en una necesidad para la sociedad. A medida que avanza la tecnología y la aplicación de la misma en entornos tanto de ocio como de seguridad, la evolución en desarrollo biométrico es muy grande. Los sistemas de identificación o verificación tradicionales (tarjetas o claves) se h...

  17. Anastomose mecanica em reto extraperitoneal : (duas tecnicas de reconstrução) : estudo experimental comparativo em caes

    OpenAIRE

    Fernando Cordeiro

    1995-01-01

    Resumo: Os problemas resultantes das anastomoses no reto abaixo da reflexão peritoneal continuam sendo tema de discussões. Com o desenvolvimento de novas técnicas pode-se estender a ressecção anterior aos segmentos retais mais baixos com preservação do mecanismo esfincteriano, porém a segurança destes procedimentos está por ser estabelecida. Este estudo comparativo randomizado entre duas técnicas de anastomose mecânica no reto de cães, abaixo da reflexão peritoneal, permitiu a elaboração de...

  18. Análisis comparativo 1995-2000 del desarrollo humano de los estados de Colima, Jalisco y Nayarit

    OpenAIRE

    Francisco José Zamudio; José Luis Romo; Domingo Rosas

    2005-01-01

    Este estudio consiste en el análisis comparativo del desarrollo humano en los estados de Colima, Jalisco y Nayarit para el periodo 1995-2000. Se utilizan tres indicadores: el Índice de Desarrollo Humano con Producto Interno Bruto per cápita; el Índice de Desarrollo Humano con servicios, y el Índice de Desarrollo Humano relativo al género. Adicionalmente, se hace un análisis crítico sobre la variación e inequidad y se analiza la calidad de ese desarrollo.

  19. Análisis comparativo del sector agropecuario colombiano frente al tratado de libre comercio con Chile

    OpenAIRE

    Eslava Ardila, Paula

    2014-01-01

    El presente trabajo es un análisis comparativo entre el sector agropecuario de Colombia frente al de Chile, en el marco del Tratado de Libre Comercio, con el objetivo de evaluar los productos potenciales de exportación del sector colombiano, y de esta manera aprovechar los recursos y las ventajas competitivas en oportunidades de progreso. Para el desarrollo del análisis, se describe cada uno de los países en términos económicos con variables como: PIB, PIB per cápita, Balanza Comercial, gr...

  20. Provincial carbon intensity abatement potential estimation in China: A PSO–GA-optimized multi-factor environmental learning curve method

    International Nuclear Information System (INIS)

    Yu, Shiwei; Zhang, Junjie; Zheng, Shuhong; Sun, Han

    2015-01-01

    This study aims to estimate carbon intensity abatement potential in China at the regional level by proposing a particle swarm optimization–genetic algorithm (PSO–GA) multivariate environmental learning curve estimation method. The model uses two independent variables, namely, per capita gross domestic product (GDP) and the proportion of the tertiary industry in GDP, to construct carbon intensity learning curves (CILCs), i.e., CO 2 emissions per unit of GDP, of 30 provinces in China. Instead of the traditional ordinary least squares (OLS) method, a PSO–GA intelligent optimization algorithm is used to optimize the coefficients of a learning curve. The carbon intensity abatement potentials of the 30 Chinese provinces are estimated via PSO–GA under the business-as-usual scenario. The estimation reveals the following results. (1) For most provinces, the abatement potentials from improving a unit of the proportion of the tertiary industry in GDP are higher than the potentials from raising a unit of per capita GDP. (2) The average potential of the 30 provinces in 2020 will be 37.6% based on the emission's level of 2005. The potentials of Jiangsu, Tianjin, Shandong, Beijing, and Heilongjiang are over 60%. Ningxia is the only province without intensity abatement potential. (3) The total carbon intensity in China weighted by the GDP shares of the 30 provinces will decline by 39.4% in 2020 compared with that in 2005. This intensity cannot achieve the 40%–45% carbon intensity reduction target set by the Chinese government. Additional mitigation policies should be developed to uncover the potentials of Ningxia and Inner Mongolia. In addition, the simulation accuracy of the CILCs optimized by PSO–GA is higher than that of the CILCs optimized by the traditional OLS method. - Highlights: • A PSO–GA-optimized multi-factor environmental learning curve method is proposed. • The carbon intensity abatement potentials of the 30 Chinese provinces are estimated by

  1. Use of coconut meal in slaughter pig diets Uso de farelo de coco nas dietas de suínos para abate

    Directory of Open Access Journals (Sweden)

    Teresinha Marisa Bertol

    2009-09-01

    Full Text Available In this experiment, the swine bioeconomic performance and carcass characteristics, due to coconut meal (FC inclusion in diets, were evaluated. Twenty hybrid barrows, Landrace x Large White, with average weight of 19.7±2.9kg, at the beginning of diet supply, were used and slaughtered after 12 weeks with average weight of 89.2±5.2 kg and 149 days of age. The experiment was established at Escola Agrotecnica Federal in Sousa-PB. Increasing levels of coconut meal (0%, 10%, 20% and 30% replaced partially hominy feed and soybean meal in isoproteic, isocaloric and isolisinic diets. It was used a randomized block design with four treatments and five repetitions. The parameters evaluated were: feed consumption, final and slaughter weight, hot and cold carcass weights, gross income and gross margin per carcass, percentage of weight loss due to chilling, hot and cold carcass yield and yields of main cuts (ham, sirloin, shoulder+picnic, belly+ribs and boston butt, backfat thickness, loineye area, carcass length and lean to fat ratio. It was concluded that 22.8 % of coconut meal may be included in slaughter swine diets, replacing partially hominy feed and soybean meal.Objetivou-se, por meio do experimento, avaliar o desempenho bioeconômico e as características de carcaça de suínos mediante à inclusão de farelo de coco (FC na ração. Foram utilizados 20 suínos machos castrados, híbridos Landrace x Large White, com 19,7±2,9 kg ao início do experimento e abatidos, após 12 semanas, com 89,2±5,2 kg e 149 dias de idade. O experimento foi realizado na Escola Agrotécnica Federal de Sousa-PB. Os níveis crescentes de farelo de coco (0%, 10%, 20% e 30% substituíram parcialmente o farelo residual de milho e o farelo de soja em dietas isoprotéicas, isocalóricas e isolisínicas. O delineamento utilizado foi em blocos casualizados com quatro tratamentos e cinco repetições. Os parâmetros avaliados foram o consumo total de ração, os pesos (final, de

  2. Um caso de organização limite da personalidade: Um estudo comparativo da projeção no Rorschach e no TAT

    OpenAIRE

    Fernandez, Isabel Bernardo

    1994-01-01

    Apresenta-se um estudo comparativo dos protocolos do Rorschach e do TAT de uma jovem de quase 20 anos, diagnosticada como organização limite da personalidade, procurando mostrar como ambos se elucidam entre o Rorschach e o TAT.e completam num esclarecimento relativo aos «como» e

  3. Análisis comparativo de las variables más relevantes para el desarrollo

    Directory of Open Access Journals (Sweden)

    Roberto Jiménez Gómez

    2012-07-01

    Full Text Available Resumen En este artículo se analiza la evolución histórica de variables que han sido consideradas como relevantes para el desarrollo de Brasil, Chile, Corea del Sur, Finlandia e Irlanda, países donde en las últimas décadas se ha realizado una serie de transformaciones de índole social y económica que son interesantes contrastar con el desarrollo seguido por Costa Rica. A través de un análisis comparativo con estos países, se trata de identificar las lecciones aprendidas y las diferencias entre los indicadores de las variables estudiadas para inferir algunas conclusiones de su evolución en el largo plazo y su implicación en el desarrollo de los países en cuestión. Palabras Claves: Desarrollo, ingreso nacional bruto, competitividad, educación, desarrollo humano. Abstract This article analyzes the historical evolution of some variables that have been considered as relevant to the development of Brazil, Chile, South Korea, Finland and Ireland, which in recent decades made transformations on social, economic and a combination of both fields that can serve as a guide for other developing countries like Costa Rica. Through a comparative analysis of these countries, will be possible to take a note about the lessons learned and the differences between the selected indicators, and in fact, this scenario reflects the changes made and the position where you will find the country. Keywords: Development, GNI, competitiveness, education, human development.

  4. Integrated cost-effectiveness analysis of greenhouse gas emission abatement. The case of Finland

    Energy Technology Data Exchange (ETDEWEB)

    Lehtilae, A.; Tuhkanen, S. [VTT Energy, Espoo (Finland). Energy Systems

    1999-11-01

    In Finland greenhouse gas emissions are expected to increase during the next decades due to economic growth, particularly in the energy intensive industrial sectors. The role of these industries is very central in the national economy. The emission control according to the Kyoto Protocol will therefore be quite difficult and costly. The study analyses the cost-effectiveness of different technical options for reducing the emissions of carbon dioxide, methane, and nitrous oxide in Finland. The analysis is performed with the help of a comprehensive energy system model for Finland, which has been extended to cover all major sources of methane and nitrous oxide emissions in the energy sector, industry, waste management and agriculture. The focus being on technical options, no consideration is given to possible policy measures, emission trading or joint implementation in the study. Under the boundary conditions given for the development of the Finnish energy economy, cost-effective technical measures in the energy system include increases in the use of wood biomass, natural gas and wind energy, increases in the contribution of CHP to the power supply, and intensified energy conservation in all end-use sectors. Additional cost-effective measures are landfill gas recovery, utilisation of the combustible fraction of waste and catalytic conversion of N{sub 2}O in nitric acid production. With baseline assumptions, the direct annual costs of emission abatement are calculated to be about 2000 MFIM (330 M{epsilon}) in 2010. The marginal costs are estimated to be about 230 FIM (40 {epsilon}) per tonne of CO{sub 2}-equivalent in 2010. The cost curie derived from the analysis could be used in further analyses concerning emissions trading. (orig.) 109 refs. SIHTI Research Programme

  5. Oak Ridge Y-12 Plant Biological Monitoring and Abatement Program Plan

    Energy Technology Data Exchange (ETDEWEB)

    Adams, S.M.; Brandt, C.C.; Christensen, S.W.; Greeley, M.S.JR.; Hill, W.R.; Peterson, M.J.; Ryon, M.G.; Smith, J.G.; Southworth, G.R.; Stewart, A.J.

    2000-09-01

    The revised Biological Monitoring and Abatement Program (BMAP) for East Fork Poplar Creek (EFPC) at the Oak Ridge Y-12 Plant, as described, will be conducted as required by the National Pollutant Discharge Elimination System permit issued for the Y-12 Plant on April 28, 1995 and became effective July 1, 1995. The basic approach to biological monitoring used in this program was developed by the staff in the Environmental Science Division (ESD) at the Oak Ridge National Laboratory (ORNL) at the request of the Y-12 Plant. The revision to the BMAP plan is based on results of biological monitoring conducted during the period of 1985 to present. Details of the specific procedures used in the current routine monitoring program are provided; experimental designs for future studies are described in less detail. The overall strategy used in developing this plan was, and continues to be, to use the results obtained from each task to define the scope of future monitoring efforts. Such efforts may require more intensive sampling than initially proposed in some areas (e.g., additional bioaccumulation monitoring if results indicate unexpectedly high PCBs or Hg) or a reduction in sampling intensity in others (e.g., reduction in the number of sampling sites when no impact is still observed). The program scope will be re-evaluated annually. By using the results of previous monitoring efforts to define the current program and to guide us in the development of future studies, an effective integrated monitoring program has been developed to assess the impacts of Y-12 Plant operations (past and present) on the biota of EFPC and to document the ecological effects of remedial actions.

  6. Carbon Abatement and Emissions Associated with the Gasification of Walnut Shells for Bioenergy and Biochar Production.

    Science.gov (United States)

    Pujol Pereira, Engil Isadora; Suddick, Emma C; Six, Johan

    2016-01-01

    By converting biomass residue to biochar, we could generate power cleanly and sequester carbon resulting in overall greenhouse gas emissions (GHG) savings when compared to typical fossil fuel usage and waste disposal. We estimated the carbon dioxide (CO2) abatements and emissions associated to the concurrent production of bioenergy and biochar through biomass gasification in an organic walnut farm and processing facility in California, USA. We accounted for (i) avoided-CO2 emissions from displaced grid electricity by bioenergy; (ii) CO2 emissions from farm machinery used for soil amendment of biochar; (iii) CO2 sequestered in the soil through stable biochar-C; and (iv) direct CO2 and nitrous oxide (N2O) emissions from soil. The objective of these assessments was to pinpoint where the largest C offsets can be expected in the bioenergy-biochar chain. We found that energy production from gasification resulted in 91.8% of total C offsets, followed by stable biochar-C (8.2% of total C sinks), offsetting a total of 107.7 kg CO2-C eq Mg-1 feedstock. At the field scale, we monitored gas fluxes from soils for 29 months (180 individual observations) following field management and precipitation events in addition to weekly measurements within three growing seasons and two tree dormancy periods. We compared four treatments: control, biochar, compost, and biochar combined with compost. Biochar alone or in combination with compost did not alter total N2O and CO2 emissions from soils, indicating that under the conditions of this study, biochar-prompted C offsets may not be expected from the mitigation of direct soil GHG emissions. However, this study revealed a case where a large environmental benefit was given by the waste-to-bioenergy treatment, addressing farm level challenges such as waste management, renewable energy generation, and C sequestration.

  7. Carbon Abatement and Emissions Associated with the Gasification of Walnut Shells for Bioenergy and Biochar Production.

    Directory of Open Access Journals (Sweden)

    Engil Isadora Pujol Pereira

    Full Text Available By converting biomass residue to biochar, we could generate power cleanly and sequester carbon resulting in overall greenhouse gas emissions (GHG savings when compared to typical fossil fuel usage and waste disposal. We estimated the carbon dioxide (CO2 abatements and emissions associated to the concurrent production of bioenergy and biochar through biomass gasification in an organic walnut farm and processing facility in California, USA. We accounted for (i avoided-CO2 emissions from displaced grid electricity by bioenergy; (ii CO2 emissions from farm machinery used for soil amendment of biochar; (iii CO2 sequestered in the soil through stable biochar-C; and (iv direct CO2 and nitrous oxide (N2O emissions from soil. The objective of these assessments was to pinpoint where the largest C offsets can be expected in the bioenergy-biochar chain. We found that energy production from gasification resulted in 91.8% of total C offsets, followed by stable biochar-C (8.2% of total C sinks, offsetting a total of 107.7 kg CO2-C eq Mg-1 feedstock. At the field scale, we monitored gas fluxes from soils for 29 months (180 individual observations following field management and precipitation events in addition to weekly measurements within three growing seasons and two tree dormancy periods. We compared four treatments: control, biochar, compost, and biochar combined with compost. Biochar alone or in combination with compost did not alter total N2O and CO2 emissions from soils, indicating that under the conditions of this study, biochar-prompted C offsets may not be expected from the mitigation of direct soil GHG emissions. However, this study revealed a case where a large environmental benefit was given by the waste-to-bioenergy treatment, addressing farm level challenges such as waste management, renewable energy generation, and C sequestration.

  8. Managing Risk Aversion for Low-Carbon Supply Chains with Emission Abatement Outsourcing.

    Science.gov (United States)

    Wang, Qinpeng; He, Longfei

    2018-02-21

    Reducing carbon emissions, including emission abatement outsourcing at the supply-chain level, is becoming a significant but challenging problem in practice. Confronting this challenge, we therefore break down the practice to focus on a low-carbon supply chain consisting of one supplier, one manufacturer and one third-party emission-reducing contractor. The contractor offers a carbon reduction service to the manufacturer. In view of the increasing proportion of Greenhouse Gases (GHG) emissions and absence of carbon reduction policies in developing countries, we adopt the prospect of consumers' low-carbon preferences to capture the demand sensitivity on carbon emission. By exploiting the Mean-Variance (MV) model, we develop a supply chain game model considering risk aversion. Comparing the supply chain performances of the cases under risk neutrality and risk aversion, we investigate the impact of the risk aversion of the supplier and the manufacturer on the low-carbon supply chain performances, respectively. We show that the risk aversion of chain members will not influence the relationship underlain by the profit-sharing contract between the manufacturer and contractor, whereas they may extend the supplier's concerning range. Although the manufacturer's risk aversion has a positive impact on the wholesale price, interestingly, the supplier's impact on the wholesale price is negative. Furthermore, we propose a contract to coordinate the risk-averse low-carbon supply chain by tuning the aversion levels of the supplier and the manufacturer, respectively. Through numerical study, we draw on managerial insights for industrial practitioners to adopt a low carbon strategy potentially by managing the risk attitudes along the supply chain channel.

  9. OAK RIDGE Y-12 PLANT BIOLOGICAL MONITORING AND ABATEMENT PROGRAM (BMAP) PLAN

    Energy Technology Data Exchange (ETDEWEB)

    ADAMS, S.M.; BRANDT, C.C.; CHRISTENSEN, S.W.; CICERONE, D.S.; GREELEY, M.S.JR; HILL, W.R.; HUSTON, M.S.; KSZOS, L.A.; MCCARTHY, J.F.; PETERSON, M.J.; RYON, M.G.; SMITH, J.G.; SOUTHWORTH, G.R.; STEWART, A.J.

    1998-10-01

    The proposed Biological Monitoring and Abatement Program (BMAP) for East Fork Poplar Creek (EFPC) at the Oak Ridge Y-12 Plant, as described, will be conducted for the duration of the National Pollutant Discharge Elimination System permit issued for the Y-12 Plant on April 28, 1995, and which became effective July 1, 1995. The basic approach to biological monitoring used in this program was developed by the staff in the Environmental Sciences Division at the Oak Ridge National Laboratory at the request of Y- 12 Plant personnel. The proposed BMAP plan is based on results of biological monitoring conducted since 1985. Details of the specific procedures used in the current routine monitoring program are provided but experimental designs for future studies are described in less detail. The overall strategy used in developing this plan was, and continues to be, to use the results obtained from each task to define the scope of future monitoring efforts. Such efforts may require more intensive sampling than initially proposed in some areas (e.g., additional toxicity testing if initial results indicate low survival or reproduction) or a reduction in sampling intensity in others (e.g., reduction in the number of sampling sites when no impact is observed). By using the results of previous monitoring efforts to define the current program and to guide us in the development of future studies, an effective integrated monitoring program has been developed to assess the impacts of the Y-12 Plant operation on the biota of EFPC and to document the ecological effects of remedial actions.

  10. Abatement of atmospheric emissions in North America: Progress to date and promise for the future

    International Nuclear Information System (INIS)

    Ellis, E.C.; Erbes, R.E.; Grott, J.K.

    1990-01-01

    Much progress has been made in acidic rain abatement in North America. This progress is examined with a focus on man-made emissions of sulfur dioxide and nitrogen oxides that contribute to acidic deposition. A review of US historical trends of SO 2 and nitrogen oxides emissions since 1900 and projections of future emissions through the end of this century shoe emissions of SO 2 decreasing from a peak in 1970 of 29 Tg/yr to about 26 Tg/yr, but nitrogen oxides emissions continuing an upward trend to about 25 Tg/yr. In Canada, SO 2 , NO and NO 2 emissions are less than 20% of those in the US, and the trends are similar, with SO 2 showing future decreases and NO and NO 2 continuing to increase. Future industry in North America is expected to emit much lower levels of SO 2 , NO, and NO 2 . Technology is also available to limit nitrogen oxides emissions from future motor vehicles. Recent acidic deposition legislation in the US Congress to reduce electric utility and industrial emissions of SO 2 by 9 to 13 Tg/yr is reviewed. The estimates of the cost to implement the proposals range from $2 billion to $23 billion over a 5-year period. Retrofitting existing utility and industrial boilers for maximum SO 2 , NO, and NO 2 reduction carries the highest price tag. Several environmental policy options are explored for preventing emission increases and also promoting decreases in future emissions of SO 2 , NO, and NO 2 in North America. Focus on nitrogen oxides emissions may be critical because population growth could cause significant increases in NO and NO 2 from motor vehicle use

  11. Managing Risk Aversion for Low-Carbon Supply Chains with Emission Abatement Outsourcing

    Science.gov (United States)

    Wang, Qinpeng; He, Longfei

    2018-01-01

    Reducing carbon emissions, including emission abatement outsourcing at the supply-chain level, is becoming a significant but challenging problem in practice. Confronting this challenge, we therefore break down the practice to focus on a low-carbon supply chain consisting of one supplier, one manufacturer and one third-party emission-reducing contractor. The contractor offers a carbon reduction service to the manufacturer. In view of the increasing proportion of Greenhouse Gases (GHG) emissions and absence of carbon reduction policies in developing countries, we adopt the prospect of consumers’ low-carbon preferences to capture the demand sensitivity on carbon emission. By exploiting the Mean-Variance (MV) model, we develop a supply chain game model considering risk aversion. Comparing the supply chain performances of the cases under risk neutrality and risk aversion, we investigate the impact of the risk aversion of the supplier and the manufacturer on the low-carbon supply chain performances, respectively. We show that the risk aversion of chain members will not influence the relationship underlain by the profit-sharing contract between the manufacturer and contractor, whereas they may extend the supplier’s concerning range. Although the manufacturer’s risk aversion has a positive impact on the wholesale price, interestingly, the supplier’s impact on the wholesale price is negative. Furthermore, we propose a contract to coordinate the risk-averse low-carbon supply chain by tuning the aversion levels of the supplier and the manufacturer, respectively. Through numerical study, we draw on managerial insights for industrial practitioners to adopt a low carbon strategy potentially by managing the risk attitudes along the supply chain channel. PMID:29466281

  12. Managing Risk Aversion for Low-Carbon Supply Chains with Emission Abatement Outsourcing

    Directory of Open Access Journals (Sweden)

    Qinpeng Wang

    2018-02-01

    Full Text Available Reducing carbon emissions, including emission abatement outsourcing at the supply-chain level, is becoming a significant but challenging problem in practice. Confronting this challenge, we therefore break down the practice to focus on a low-carbon supply chain consisting of one supplier, one manufacturer and one third-party emission-reducing contractor. The contractor offers a carbon reduction service to the manufacturer. In view of the increasing proportion of Greenhouse Gases (GHG emissions and absence of carbon reduction policies in developing countries, we adopt the prospect of consumers’ low-carbon preferences to capture the demand sensitivity on carbon emission. By exploiting the Mean-Variance (MV model, we develop a supply chain game model considering risk aversion. Comparing the supply chain performances of the cases under risk neutrality and risk aversion, we investigate the impact of the risk aversion of the supplier and the manufacturer on the low-carbon supply chain performances, respectively. We show that the risk aversion of chain members will not influence the relationship underlain by the profit-sharing contract between the manufacturer and contractor, whereas they may extend the supplier’s concerning range. Although the manufacturer’s risk aversion has a positive impact on the wholesale price, interestingly, the supplier’s impact on the wholesale price is negative. Furthermore, we propose a contract to coordinate the risk-averse low-carbon supply chain by tuning the aversion levels of the supplier and the manufacturer, respectively. Through numerical study, we draw on managerial insights for industrial practitioners to adopt a low carbon strategy potentially by managing the risk attitudes along the supply chain channel.

  13. Un Análisis Comparativo de la Contabilidad Pública Española en el Contexto Internacional

    Directory of Open Access Journals (Sweden)

    José Manuel Vela Bargues

    1997-12-01

    Full Text Available El objeto de este trabajo es presentar un análisis comparativo de la situación de la Contabilidad Pública española en el ámbito internacional. Para ello, y siguiendo una metodología analítica, se parte en primer lugar del análisis de la influencia que el entorno político administrativo ha ejercido sobre el sistema contable público español, caracterizando el mismo con respecto al que en otros países es posible apreciar. Posteriormente, se analizan aquellos rasgos del sistema contable público español que mejor permiten el desarrollo de estudios comparativos descriptivos, incidiendo especialmente en aspectos como el marco conceptual, los sistemas de reconocimiento o las relaciones entre el presupuesto y la contabilidad financiera. This paper presents a comparative analysis 01 Spanish governmental accounting from an international perspective. With this purpose and following an analytical methodology, the influence 01 the political-administrative environment in the Spanish governmental accounting system is analysed, characterizing it with respect to the situation in other countries. The main leatures of the Spanish governmental accounting system are also analysed, especially those that allow a descriptive and comparative study. This is the case for example of the conceptual framework, the recognition system or the relationship between budget and financial accounting.

  14. Análisis comparativo de marcadores de lesión en modelos de isquemia cerebral focal y global en ratas

    Directory of Open Access Journals (Sweden)

    Ángel Enrique Céspedes

    2013-06-01

    Full Text Available Introducción. Los indicadores espacio-temporales de lesión son esenciales en el estudio neuropatológico y terapéutico de la isquemia cerebral. Objetivo. Optimizar la técnica de dos modelos de isquemia cerebral (focal y global y hacer un análisis comparativo de la progresión del daño cerebral, mediante marcadores de neurodegeneración. Materiales y métodos. Se sometieron ratas Wistar a oclusión temporal de la arteria cerebral media o aoclusión de cuatro vasos, y se evaluaron comparativamente el tiempo quirúrgico, la tasa de supervivenciay la recuperación neurológica. Se utilizó trifenilo de tetrazolio para establecer la distribución del infarto y tinción con Fluoro-Jade B® como marcador de neurodegeneración. La inmunorreacción de la astroglía  se evaluó con el anticuerpo contra la proteína acídica fibrilar de la glía (Glial Fibrillary Acidic Protein,GFAP y el anticuerpo AT-8 contra la proteína tau hiperfosforilada, 24, 48 y 72 horas después de la isquemia. Resultados. Los modelos de isquemia utilizados requirieron menor tiempo quirúrgico y hubo menorriesgo de muerte, respecto a estudios previos. En el modelo focal, las células positivas con Fluoro-Jade B® y los astrocitos reactivos, se evidenciaron en corteza e hipocampo a las 24 horas después de la isquemia. En el modelo global, se observó tinción Fluoro-Jade B® positiva a las 24 horas, aumentando significativamente la reacción de la GFAP a las 72 horas en corteza y a las 48 horas en el hipocampo. La reacción contra la proteína tau hiperfosforilada aumentó progresivamente y fue máxima a las 72horas en ambos modelos. Conclusiones. Los dos modelos de isquemia cerebral, oclusión temporal de la arteria cerebral media y oclusión de cuatro vasos, fueron optimizados. En estos modelos, los marcadores la tinción Fluoro-Jade B® y la GFAP permitieron detectar procesos de neurodegeneración 24 horas después de la isquemia, en tanto el marcador de proteína tau

  15. Energy consumption and energy-saving potential analysis of pollutant abatement systems in a 1000MW coal-fired power plant.

    Science.gov (United States)

    Yang, Hang; Zhang, Yongxin; Zheng, Chenghang; Wu, Xuecheng; Chen, Linghong; Gao, Xiang; Fu, Joshua S

    2018-05-10

    The pollutant abatement systems are widely applied in the coal-fired power sector and the energy consumption was considered an important part of the auxiliary power. An energy consumption analysis and assessment model of pollutant abatement systems in a power unit was developed based on the dynamic parameters and technology. The energy consumption of pollutant abatement systems in a 1000 MW coal-fired power unit which meet the ultra-low emission limits and the factors of operating parameters including unit load and inlet concentration of pollutants on the operating power were analyzed. The results show that the total power consumption of the pollutant abatement systems accounted for 1.27% of the gross power generation during the monitoring period. The WFGD system consumed 67% of the rate while the SCR and ESP systems consumed 8.9% and 24.1%. The power consumption rate of pollutant abatement systems decreased with the increase of unit load and increased with the increase of the inlet concentration of pollutants. The operation adjustment was also an effective method to increase the energy efficiency. For example, the operation adjustment of slurry circulation pumps could promote the energy-saving operation of WFGD system. Implication Statement The application of pollutant abatement technologies increases the internal energy consumption of the power plant, which will lead to an increase of power generation costs. The real-time energy consumption of the different pollutant abatement systems in a typical power unit is analyzed based on the dynamic operating data. Further, the influence of different operating parameters on the operating power of the system and the possible energy-saving potential are analyzed.

  16. IOC-UNEP regional workshop to review priorities for marine pollution monitoring, research, control and abatement in the wider Caribbean

    International Nuclear Information System (INIS)

    1989-01-01

    The IOC-UNEP Regional Workshop to Review Priorities for Marine Pollution Monitoring, Research, Control and Abatement in the Wider Caribbean Region (San Jose, 24-30 August 1989) examined a possible general framework for a regionally co-ordinated comprehensive joint IOC/UNEP programme for marine pollution assessment and control in the Wider Caribbean region (CEPPOL). The overall objective of CEPPOL is to establish a regionally co-ordinated comprehensive joint IOC/UNEP Marine Pollution Assessment and Control Programme catering to the immediate and long-term requirements of the Cartagena Convention as well as the requirements of the member States of IOCARIBE. The specific objectives of the programmes are: (i) To organize and carry out a regionally co-ordinated marine pollution monitoring and research programme concentrating on contaminants and pollutants affecting the quality of the marine and coastal environment, as well as the human health in the Wider Caribbean and to interpret/assess the results of the programme as part of the scientific basis for the region; (ii) To generate information on the sources, levels, amounts, trends and effects of marine pollution within the Wider Caribbean region as an additional component of the scientific basis upon which the formulation of proposals for preventive and remedial actions can be based; (iii) To formulate proposals for technical, administrative and legal pollution control, abatement, and preventive measures and to assist the Governments in the region in implementing and evaluating their effectiveness; and (iv) To strengthen and , when necessary, to develop/establish the capabilities of national institutions to carry out marine pollution monitoring and research, as well as to formulate and apply pollution control and abatement measures

  17. Načrtovan porod na domu

    OpenAIRE

    Todorović, Tamara; Takač, Iztok

    2017-01-01

    Izhodišča: Porod na domu je sicer star toliko kot človeštvo, pa vendar v veliki večini srednje in visoko razvitih držav prevladuje mnenje, da so zaradi nepredvidljivosti zapletov porodnišnice najbolj varno okolje za rojevanje. Kljub temu obstaja peščica držav, v katerih je porod na domu integriran v sistem zdravstvenega varstva (npr. Nizozemska, Velika Britanija, Kanada). Pri porodih na domu ločimo nenačrtovane in načrtovane porode na domu, slednje pa lahko nadalje razdelimo še na porode s sp...

  18. Technical and economic assessment for asbestos abatement within Facility 20470, Wright-Patterson Air Force Base, Ohio

    International Nuclear Information System (INIS)

    Gibson, S.M.; Ogle, R.B.

    1988-03-01

    This report presents the results of a technical and economic assessment of available alternatives for asbestos abatement within Facility 20470 at the Wright-Patterson Air Force Base in Dayton, Ohio. Each alternative was screened on the basis of technical feasibility, environmental impact, economics, and fulfillment of the IRP goals. Four alternatives for study are: establishing a special operations and maintenance program; enclosure; encapsulation with sealants; and removal, disposal, and replacement. Each of these alternatives was assessed for capability to control the release of asbestos fibers within Facility 20470. Alternatives 1 and 4 were determined to be acceptable, while Alternatives 2 and 3 were found to be unacceptable. 2 refs., 6 figs

  19. Science Letters:Synergetic effects for p-nitrophenol abatement using a combined activated carbon adsorption-electrooxidation process

    Institute of Scientific and Technical Information of China (English)

    周明华; 戴启洲; 雷乐成; 汪大翚

    2004-01-01

    A novel fluidized electrochemical reactor that integrated advanced electrochemical oxidation with activated carbon (AC) fluidization in a single cell was developed to model pollutant p-nitrophenol (PNP) abatement. AC fluidization could enhance COD removal by 22%-30%. In such a combined process, synergetic effects on PNP and COD removal was found, with their removal rate being enhanced by 137.8% and 97.8%, respectively. AC could be electrochemically regenerated and reused, indicating the combined process would be promising for treatment of biorefractory organic pollutants.

  20. System-wide and Superemitter Policy Options for the Abatement of Methane Emissions from the U.S. Natural Gas System

    Science.gov (United States)

    Mayfield, E. N.; Robinson, A. L.; Cohon, J. L.

    2017-12-01

    This work assesses trade-offs between system-wide and superemitter policy options for reducing methane emissions from compressor stations in the U.S. transmission and storage system. Leveraging recently collected national emissions and activity data sets, we developed a new process-based emissions model implemented in a Monte Carlo simulation framework to estimate emissions for each component and facility in the system. We find that approximately 83% of emissions, given the existing suite of technologies, have the potential to be abated, with only a few emission categories comprising a majority of emissions. We then formulate optimization models to determine optimal abatement strategies. Most emissions across the system (approximately 80%) are efficient to abate, resulting in net benefits ranging from 160M to 1.2B annually across the system. The private cost burden is minimal under standard and tax instruments, and if firms market the abated natural gas, private net benefits may be generated. Superemitter policies, namely, those that target the highest emitting facilities, may reduce the private cost burden and achieve high emission reductions, especially if emissions across facilities are highly skewed. However, detection across all facilities is necessary regardless of the policy option and there are nontrivial net benefits resulting from abatement of relatively low-emitting sources.

  1. Late-gestation heat stress abatement on performance and behavior of Holstein dairy cows.

    Science.gov (United States)

    Karimi, M T; Ghorbani, G R; Kargar, S; Drackley, J K

    2015-10-01

    The objective of this study was to evaluate cooling to lessen the effects of heat stress during the last 3 wk of gestation on performance and behavior of multiparous Holstein cows. Twenty nonlactating cows were randomly assigned to treatments approximately 21 d before their expected calving date based on mature equivalent milk production and parity. Treatments were only imposed during the last 3 wk of gestation and included heat stress (HT; n=10) and cooling (CL; n=10), both under a similar photoperiod (14 h of light and 10 h of dark). Dry cows were housed in a sand-bedded stall with the stall areas for CL cows equipped with sprinklers and fans that were on from 0700 to 1900 h, whereas those for the HT cows were not. After parturition, all cows were housed in a barn with cooling devices. Rectal temperatures were measured daily at 1400 h and respiration rates were recorded by counting the flank movements for 1 min at 1500 h on odd days over the last 3 wk of gestation to calving. Daily dry matter intake was measured from -21 d relative to expected calving to 21 d after calving and milk production was recorded daily up to 180 d in milk. Behavioral changes of dry cows were studied continuously for 24 h at -10 d relative to expected calving. The average temperature-humidity index during the last 3 wk of gestation was 69.7 and was not significantly different between treatments. Heat-stressed cows exhibited greater rectal temperatures (39.5 vs. 39.2°C), greater respiration rates (70.4 vs. 63.3 breaths/min), and decreased dry matter intake (13.7 vs. 15.5 kg/d) compared with CL cows. Compared with HT cows, CL cows produced more milk during 180 d in milk (40.5 vs. 44.6 kg/d). Heat stress decreased ruminating (243.2 vs. 282.5 min/d) and chewing times (390.6 vs. 448.7 min/d) at -10 d before calving. The CL cows had shorter standing times than their HT counterparts (390.4 vs. 474.0 min/d). These results confirm that heat stress abatement in the late gestation period improves

  2. Modelling road dust emission abatement measures using the NORTRIP model: Vehicle speed and studded tyre reduction

    Science.gov (United States)

    Norman, M.; Sundvor, I.; Denby, B. R.; Johansson, C.; Gustafsson, M.; Blomqvist, G.; Janhäll, S.

    2016-06-01

    Road dust emissions in Nordic countries still remain a significant contributor to PM10 concentrations mainly due to the use of studded tyres. A number of measures have been introduced in these countries in order to reduce road dust emissions. These include speed reductions, reductions in studded tyre use, dust binding and road cleaning. Implementation of such measures can be costly and some confidence in the impact of the measures is required to weigh the costs against the benefits. Modelling tools are thus required that can predict the impact of these measures. In this paper the NORTRIP road dust emission model is used to simulate real world abatement measures that have been carried out in Oslo and Stockholm. In Oslo both vehicle speed and studded tyre share reductions occurred over a period from 2004 to 2006 on a major arterial road, RV4. In Stockholm a studded tyre ban on Hornsgatan in 2010 saw a significant reduction in studded tyre share together with a reduction in traffic volume. The model is found to correctly simulate the impact of these measures on the PM10 concentrations when compared to available kerbside measurement data. Importantly meteorology can have a significant impact on the concentrations through both surface and dispersion conditions. The first year after the implementation of the speed reduction on RV4 was much drier than the previous year, resulting in higher mean concentrations than expected. The following year was much wetter with significant rain and snow fall leading to wet or frozen road surfaces for 83% of the four month study period. This significantly reduced the net PM10 concentrations, by 58%, compared to the expected values if meteorological conditions had been similar to the previous years. In the years following the studded tyre ban on Hornsgatan road wear production through studded tyres decreased by 72%, due to a combination of reduced traffic volume and reduced studded tyre share. However, after accounting for exhaust

  3. Estimativa da gordura de cobertura ao abate, por ultra-som, em tourinhos Brangus e Nelore Prediction of backfat at slaughter, by ultrasound, in Nellore and Brangus young bulls

    Directory of Open Access Journals (Sweden)

    Saulo da Luz e Silva

    2004-04-01

    Full Text Available O objetivo deste trabalho foi verificar a viabilidade da utilização da ultra-sonografia para estimar a espessura de gordura na carcaça (EGSC no momento do abate. Foram confinados 24 machos inteiros Brangus e 24 Nelore com dietas contendo 20, 40, 60 ou 80% de concentrado. A área de olho de lombo (AOLU e a espessura de gordura (EGSU entre a 12ª e a 13ª costelas e a espessura de gordura sobre o músculo Biceps femoris (EGPU, foram obtidas com equipamento de ultra-som PieMedical Scanner 200 Vet com transdutor linear de 178 mm e guia acústica, a cada intervalo de aproximadamente 28 dias. Após 142 dias de confinamento, os animais foram abatidos e 24 h após foi obtida a EGSC. As correlações entre EGSU e EGSC foram de 0,19, 0,64, 0,74, 0,78, 0,82, 080 e 0,86, quando obtidas aos 0, 26, 53, 84, 109, 125 e 142 dias de confinamento. Equações de regressão múltipla entre raças para estimar a EGSC apresentaram R² = 0,10 e Sy,x = 2,04 quando realizadas 142 dias antes do abate e R² = 0,78 e Sy,x = 0,10 imediatamente antes do abate. Medidas de ultra-som podem ser úteis para classificar grupos de animais para abate em igual acabamento.The objective of this work was to verify the usefullness of ultrasound to estimate the carcass backfat thickness (EGSC at slaughter. Twenty four Brangus and 24 Nelore, intact males, were fed with diets containing 20, 40, 60 or 80% of concentrate. Ribeye area (AOLU and backfat thickness (EGSU between 12ª and 13ª ribs and the fat thickness over Biceps femoris muscle (EGPU were collected with a PieMedical Scanner 200 Vet equipment, with linear array transducer of 178 mm coupled with standoff guide, on intervals of approximately 28 days. After 142 days on fed, animals were slaughtered and the carcass backfat thickness (EGSC was taken, 24 hours after. The correlations between EGSU and EGSC were 0.19, 0.64, 0.74, 0.78, 0.82, 0.80 and 0.86 when taken at 0, 26, 53, 84, 109, 125 and 142 days on fed. Multiple regression

  4. Habilidades sociales en contextos urbanos y rurales. Un estudio comparativo con adolescentes

    Directory of Open Access Journals (Sweden)

    Evangelina Norma Contini de González

    2013-01-01

    Full Text Available Abstract The purpose of this research paper is to compare the social skills of adolescents from Tucumán (Argentina in a rural/urban context using their socio-economical levels (NES. The study was comparative and transversal with a non probabilistic sample. The battery of socialization (BAS-3 and a survey to 11 and 12 year-old urban and rural adolescents (NES is applied. The results show that the urban adolescents with high socio-economical level have more consideration for others than urban and rural adolescents with low socio-economical levels. The rural adolescents have more leadership qualities than the urban adolescents. Women show more social anxiety when compared with urban and rural women and men. The results supply important local information in order to supply information to address programs that require assertive social skills. Resumen El objetivo del trabajo que dio como resultado este artículo de investigación consistió en comparar las habilidades sociales de adolescentes escolarizados de Tucumán (Argentina, según su contexto (urbano-rural y su nivel socioeconómico (NES. El estudio fue de tipo comparativo, transversal con muestreo no probabilístico intencional. Se aplicó la batería de socialización (BAS-3 y una encuesta sociodemográfica a 372 adolescentes de 11 y 12 años. Los adolescentes urbanos de NES alto refirieron más consideración hacia los demás que los adolescentes urbanos y rurales de NES bajo. Además, los adolescentes rurales se percibieron con más liderazgo que sus pares urbanos, en tanto que las mujeres presentaron mayor ansiedad social respecto a sus pares mujeres y varones rurales y urbanos. En definitiva, los resultados proveen información valiosa a nivel local para encarar programas de promoción de habilidades sociales asertivas.

  5. Estudo comparativo entre citopatologia e histopatologia no diagnóstico de neoplasias caninas

    Directory of Open Access Journals (Sweden)

    Magalhães Adelaide M.

    2001-01-01

    Full Text Available Foi realizado um estudo comparativo entre os diagnósticos citológico e histopatológico em diversas neoplasias de 150 cães, pelas colorações de Wright, May-Grünwald-Giemsa, Novo Azul de Metileno e Papanicolau. Colorações histológicas como Hematoxilina-Eosina, van Gieson, Sudan, Azul de Toluidina e Ácido Periódico de Schiff também foram empregadas. Os dados revelaram uma eficácia de ordem de 85,3% no diagnóstico citopatológico, considerando-se os resultados histopatológicos como corretos. Em 4,0% dos casos somente a origem embrionária das neoplasias foi estabelecida. Em 1,3% das neoplasias apenas o prognóstico foi determinado; o diagnóstico citológico diferiu da histopatologia em 8,1% dos casos. Em dois casos (1,3% o diagnóstico citológico diferiu do histológico, mas um reexame determinou que o primeiro estava correto, o que elevou a sua eficácia para 86,6%. Entre as técnicas utilizadas, a punção aspirativa por agulha fina foi o melhor método para obter amostras. A citologia não foi adequada para o diagnóstico de neoplasias mamárias, dadas às variações morfológicas em diferentes áreas. A impressão em lâmina não é recomendada para análise de tumores mesenquimais e deve ser substituída pela citologia esfoliativa. O Wright revelou-se o método de coloração mais eficiente. As colorações adaptadas da histopatologia, van Gieson em leiomiomas e leiomiossarcomas, Sudan em lipomas e lipossarcomas, e Ácido Periódico de Schiff e Azul de Toluidina em mastocitomas, foram empregadas com sucesso fornecendo assim maior clareza de detalhes para as diversas neoformações de origem epitelial e mesenquimal.

  6. Second report on the Oak Ridge K-25 Site Biological Monitoring and Abatement Program for Mitchell Branch

    Energy Technology Data Exchange (ETDEWEB)

    Smith, J.G. [ed.; Adams, S.M.; Hinzman, R.L.; Kszos, L.A.; Loar, J.M.; Peterson, M.J.; Ryon, M.G.; Southworth, G.R. [Oak Ridge National Lab., TN (United States); Crumby, W.D. [Automated Sciences Group, Inc., Oak Ridge, TN (United States)

    1994-03-01

    On September 11, 1986, a modified National Pollutant Discharge Elimination System permit was issued for the Oak Ridge Gaseous Diffusion Plant (ORGDP; now referred to as the Oak Ridge K-25 Site), a former uranium-enrichment production facility. As required in Part III of the permit, a Biological Monitoring and Abatement Program (BMAP) was developed for the biological monitoring of Mitchell Branch (K-1700 stream) and submitted for approval to the US EPA and the Tennessee Department of Environment and Conservation. The plan described biomonitoring activities that would be conducted over the duration of the permit. The objectives of the BMAP are to demonstrate that the effluent limitations established for the Oak Ridge K-25 Site protect and maintain the use of Mitchell Branch for growth and propagation of fish and other aquatic life, and to document the effects on stream biota resulting from operation of major new pollution abatement facilities. The BMAP consists of four tasks: ambient toxicity testing; bioaccumulation studies; biological indicator studies; and ecological surveys of stream communities, including benthic macroinvertebrates and fish. This document is the second in a series of reports presenting the results of the studies that were conducted over various periods of time between August 1987 and June 1990.

  7. PM sources in a highly industrialised area in the process of implementing PM abatement technology. Quantification and evolution.

    Science.gov (United States)

    Cruz Minguillón, María; Querol, Xavier; Alastuey, Andrés; Monfort, Eliseo; Vicente Miró, José

    2007-10-01

    Principal component analysis (PCA) coupled with a multilinear regression analysis (MLRA) was applied to PM(10) speciation data series (2002-2005) from four sampling sites in a highly industrialised area (ceramic production) in the process of implementing emission abatement technology. Five common factors with similar chemical profiles were identified at all the sites: mineral, regional background (influenced by the industrial estate located on the coast: an oil refinery and a power plant), sea spray, industrial 1 (manufacture and use of glaze components, including frit fusion) and road traffic. The contribution of the regional background differs slightly from site to site. The mineral factor, attributed to the sum of several sources (mainly the ceramic industry, but also with minor contributions from soil resuspension and African dust outbreaks) contributes between 9 and 11 microg m(-3) at all the sites. Source industrial 1 entails an increase in PM(10) levels between 4 and 5 microg m(-3) at the urban sites and 2 microg m(-3) at the suburban background site. However, after 2004, this source contributed less than 2 microg m(-3) at most sites, whereas the remaining sources did not show an upward or downward trend along the study period. This gradual decrease in the contribution of source industrial 1 coincides with the implementation of PM abatement technology in the frit fusion kilns of the area. This relationship enables us to assess the efficiency of the implementation of environmental technologies in terms of their impact on air quality.

  8. Abatement cost of SF6 emissions from medium voltage switchgear. Validation of recent studies for the European Commission

    Energy Technology Data Exchange (ETDEWEB)

    Benner, J.; Van Lieshout, M.; Croezen, H.

    2012-05-15

    Sulphur hexafluoride (SF6) is a gas with applications including use as an insulator and switching medium in medium voltage (MV) switchgear. While having certain unique properties, it is also a greenhouse gas, with a 22,800 times greater impact than CO2 and an atmospheric lifetime of over 3,000 years. Although the use of SF6 in MV switchgear can be avoided, according to recent studies for the European Commission, the abatement costs are high. This study validates the calculated cost levels as well as the general feasibility of determining a fixed cost figure for this purpose. This analysis yields a result which differs from the earlier studies, particularly with respect to the cost aspect, but also in other areas. CE Delft concludes that for the majority of applications cost-effective SF6-free options are available, leading to abatement costs for the use of SF6 in MV switchgear that range from - 40 to 0 euro/tCO2 eq., for all types of switchgear, with voltage levels below 25 kV and situated on relatively dry locations.

  9. Third report on the Oak Ridge K-25 Site Biological Monitoring and Abatement Program for Mitchell Branch

    Energy Technology Data Exchange (ETDEWEB)

    Hinzman, R.L. [ed.; Adams, S.M.; Ashwood, T.L. [Oak Ridge National Lab., TN (United States)] [and others

    1995-08-01

    As a condition of the modified National Pollutant Discharge Elimination System (NPDES) permit issued to the Oak Ridge Gaseous Diffusion Plant (ORGDP; now referred to as the Oak Ridge K-25 Site) on September 11, 1986, a Biological Monitoring and Abatement Program (BMAP) was developed for the receiving stream (Mitchell Branch or K-1700 stream). On October 1, 1992, a renewed NPDES permit was issued for the K-25 Site. A biological monitoring plan was submitted for Mitchell Branch, Poplar Creek, Poplar Creek Embayment of the Clinch River and any unnamed tributaries of these streams. The objectives of BMAP are to (1) demonstrate that the effluent limitations established for the Oak Ridge K-25 Site protect and maintain the use of Mitchell Branch for growth and propagation of fish and other aquatic life and (2) document the effects on stream biota resulting from operation of major new pollution abatement facilities, including the Central Neutralization Facility (CNF) and the Toxic Substances Control Act (TSCA) incinerator. The BMAP consists of four tasks: (1) toxicity monitoring; (2) bioaccumulation monitoring; (3) assessment of fish health; and (4) instream monitoring of biological communities, including benthic macroinvertebrates and fish. This document, the third in a series, reports on the results of the Oak Ridge K-25 Site BMAP; it describes studies that were conducted over various periods of time between June 1990 and December 1993, although monitoring conducted outside this time period is included, as appropriate.

  10. Abatement of mercury pollution in the small-scale gold mining industry: restructuring the policy and research agendas.

    Science.gov (United States)

    Hilson, Gavin

    2006-06-01

    This paper critiques contemporary research and policy approaches taken toward the analysis and abatement of mercury pollution in the small-scale gold mining sector. Unmonitored releases of mercury from gold amalgamation have caused considerable environmental contamination and human health complications in rural reaches of sub-Saharan Africa, Latin America and Asia. Whilst these problems have caught the attention of the scientific community over the past 15-20 years, the research that has since been undertaken has failed to identify appropriate mitigation measures, and has done little to advance understanding of why contamination persists. Moreover, the strategies used to educate operators about the impacts of acute mercury exposure, and the technologies implemented to prevent further pollution, have been marginally effective at best. The mercury pollution problem will not be resolved until governments and donor agencies commit to carrying out research aimed at improving understanding of the dynamics of small scale gold mining communities. Acquisition of this knowledge is the key to designing and implementing appropriate support and abatement measures.

  11. Effects of Local Greenhouse Gas Abatement Strategies on Air Pollutant Emissions and on Health in Kuopio, Finland

    Directory of Open Access Journals (Sweden)

    Arja Asikainen

    2017-06-01

    Full Text Available Implementation of greenhouse gas (GHG abatement strategies often ends up as the responsibility of municipal action rather than national policies. Impacts of local GHG reduction measures were investigated in the EU FP7 funded project Urban Reduction of Greenhouse Gas Emissions in China and Europe (URGENCHE. Kuopio in Finland was one of the case study cities. The assessed reduction measures were (1 increased use of biomass in local heat and power cogeneration plant, (2 energy efficiency improvements of residences, (3 increased biofuel use in traffic, and (4 increased small scale combustion of wood for residential heating. Impact assessment compared the 2010 baseline with a 2020 BAU (business as usual scenario and a 2020 CO2 interventions scenario. Changes in emissions were assessed for CO2, particulate matter (PM2.5 and PM10, NOx, and SO2, and respective impacts were assessed for PM2.5 ambient concentrations and health effects. The assessed measures would reduce the local CO2 emissions in the Kuopio urban area by over 50% and local emissions of PM2.5 would clearly decrease. However, the annual average ambient PM2.5 concentration would decrease by just 4%. Thus, only marginal population level health benefits would be achieved with these assumed local CO2 abatement actions.

  12. Potential of electric discharge plasma methods in abatement of volatile organic compounds originating from the food industry.

    Science.gov (United States)

    Preis, S; Klauson, D; Gregor, A

    2013-01-15

    Increased volatile organic compounds emissions and commensurate tightening of applicable legislation mean that the development and application of effective, cost-efficient abatement methods are areas of growing concern. This paper reviews the last two decades' publications on organic vapour emissions from food processing, their sources, impacts and treatment methods. An overview of the latest developments in conventional air treatment methods is presented, followed by the main focus of the paper, non-thermal plasma technology. The results of the review suggest that non-thermal plasma technology, in its pulsed corona discharge configuration, is an emerging treatment method with potential for low-cost, effective abatement of a wide spectrum of organic air pollutants. It is found that the combination of plasma treatment with catalysis is a development trend that demonstrates considerable potential. The as yet relatively small number of plasma treatment applications is considered to be due to the novelty of pulsed electric discharge techniques and a lack of reliable pulse generators and reactors. Other issues acting as barriers to widespread adoption of the technique include the possible formation of stable oxidation by-products, residual ozone and nitrogen oxides, and sensitivity towards air humidity. Copyright © 2012 Elsevier Ltd. All rights reserved.

  13. A bottom-up method to develop pollution abatement cost curves for coal-fired utility boilers

    International Nuclear Information System (INIS)

    Vijay, Samudra; DeCarolis, Joseph F.; Srivastava, Ravi K.

    2010-01-01

    This paper illustrates a new method to create supply curves for pollution abatement using boiler-level data that explicitly accounts for technology cost and performance. The Coal Utility Environmental Cost (CUECost) model is used to estimate retrofit costs for five different NO x control configurations on a large subset of the existing coal-fired, utility-owned boilers in the US. The resultant data are used to create technology-specific marginal abatement cost curves (MACCs) and also serve as input to an integer linear program, which minimizes system-wide control costs by finding the optimal distribution of NO x controls across the modeled boilers under an emission constraint. The result is a single optimized MACC that accounts for detailed, boiler-specific information related to NO x retrofits. Because the resultant MACCs do not take into account regional differences in air-quality standards or pre-existing NO x controls, the results should not be interpreted as a policy prescription. The general method as well as NO x -specific results presented here should be of significant value to modelers and policy analysts who must estimate the costs of pollution reduction.

  14. Demolition Range Noise Abatement Technique Demonstration and Evaluation for the McAlester Army Ammunition Plant; TOPICAL

    International Nuclear Information System (INIS)

    CALDERONE, JAMES J.; GARBIN H, DOUGLAS

    2001-01-01

    Public concern regarding the effects of noise generated by the detonation of excess and obsolete explosive munitions at U.S. Army demolition ranges is a continuing issue for the Army's demilitarization and disposal groups. Recent concerns of citizens living near the McAlester Army Ammunition Plant (MCAAP) in Oklahoma have lead the U.S. Army Defense Ammunition Center (DAC) to conduct a demonstration and evaluation of noise abatement techniques that could be applied to the MCAAP demolition range. With the support of the DAC, MCAAP, and Sandia National Laboratories (SNL), three types of noise abatement techniques were applied: aqueous foams, overburden (using combinations of sand beds and dirt coverings), and rubber or steel blast mats. Eight test configurations were studied and twenty-four experiments were conducted on the MCAAP demolition range in July of 2000. Instrumentation and data acquisition systems were fielded for the collection of near-field blast pressures, far-field acoustic pressures, plant boundary seismic signals, and demolition range meteorological conditions. The resulting data has been analyzed and reported, and a ranking of each technique's effects has been provided to the DAC

  15. Third report on the Oak Ridge K-25 Site Biological Monitoring and Abatement Program for Mitchell Branch

    International Nuclear Information System (INIS)

    Hinzman, R.L.

    1995-08-01

    As a condition of the modified National Pollutant Discharge Elimination System (NPDES) permit issued to the Oak Ridge Gaseous Diffusion Plant (ORGDP; now referred to as the Oak Ridge K-25 Site) on September 11, 1986, a Biological Monitoring and Abatement Program (BMAP) was developed for the receiving stream (Mitchell Branch or K-1700 stream). On October 1, 1992, a renewed NPDES permit was issued for the K-25 Site. A biological monitoring plan was submitted for Mitchell Branch, Poplar Creek, Poplar Creek Embayment of the Clinch River and any unnamed tributaries of these streams. The objectives of BMAP are to (1) demonstrate that the effluent limitations established for the Oak Ridge K-25 Site protect and maintain the use of Mitchell Branch for growth and propagation of fish and other aquatic life and (2) document the effects on stream biota resulting from operation of major new pollution abatement facilities, including the Central Neutralization Facility (CNF) and the Toxic Substances Control Act (TSCA) incinerator. The BMAP consists of four tasks: (1) toxicity monitoring; (2) bioaccumulation monitoring; (3) assessment of fish health; and (4) instream monitoring of biological communities, including benthic macroinvertebrates and fish. This document, the third in a series, reports on the results of the Oak Ridge K-25 Site BMAP; it describes studies that were conducted over various periods of time between June 1990 and December 1993, although monitoring conducted outside this time period is included, as appropriate

  16. Coupled Climate-Economy-Biosphere (CoCEB) model - Part 1: Abatement share and investment in low-carbon technologies

    Science.gov (United States)

    Ogutu, K. B. Z.; D'Andrea, F.; Ghil, M.; Nyandwi, C.; Manene, M. M.; Muthama, J. N.

    2015-04-01

    The Coupled Climate-Economy-Biosphere (CoCEB) model described herein takes an integrated assessment approach to simulating global change. By using an endogenous economic growth module with physical and human capital accumulation, this paper considers the sustainability of economic growth, as economic activity intensifies greenhouse gas emissions that in turn cause economic damage due to climate change. Different types of fossil fuels and different technologies produce different volumes of carbon dioxide in combustion. The shares of different fuels and their future evolution are not known. We assume that the dynamics of hydrocarbon-based energy share and their replacement with renewable energy sources in the global energy balance can be modeled into the 21st century by use of logistic functions. Various climate change mitigation policy measures are considered. While many integrated assessment models treat abatement costs merely as an unproductive loss of income, we consider abatement activities also as an investment in overall energy efficiency of the economy and decrease of overall carbon intensity of the energy system. The paper shows that these efforts help to reduce the volume of industrial carbon dioxide emissions, lower temperature deviations, and lead to positive effects in economic growth.

  17. La noción de campo en Kurt Lewin y Pierre Bourdieu: un análisis comparativo

    OpenAIRE

    José Manuel Fernández Fernández; Aníbal Puente Ferreras

    2009-01-01

    La noción de campo desempeñó un papel central en los proyectos científicos de Kurt Lewin y Pierre Bourdieu. En este artículo hacemos un análisis comparativo del uso teórico y metodológico que hicieron de este concepto en la producción de su fecunda obra en los campos de la psicología y de la sociología, respectivamente. Para ello nos hemos centrado en cinco cuestiones cruciales que de modo explícito plantearon estos dos investigadores en la elaboración de su teoría de campo: la ruptura con la...

  18. Estudio comparativo de tres revistas españolas de Educación Física y Deportes

    Directory of Open Access Journals (Sweden)

    Joaquín Reverter Masià

    2007-09-01

    Full Text Available En el presente artículo se realiza un análisis comparativo de tres revistas del ámbito de la Educación Física y Deportes, editadas en castellano e incluidas en los listados de Latindex, ISOC, IN-RECS, CARHUS. Se comparan las revistas en función de distintos índices bibliométricos (citas por año, citas internacionales, trabajos publicados y factor de impacto y valorativos. El análisis pone de manifiesto que la revista Apunts. Educación Física y Deportes queda mejor situada en la mayoría de parámetros analizados, seguida muy de cerca por la revista de Psicología del Deporte. Se finaliza el trabajo con algunas reflexiones sobre los distintos índices analizados.

  19. Energy use, efficiency gains and emission abatement in transitional industrialised economies. Poland and the Baltic states

    Energy Technology Data Exchange (ETDEWEB)

    Salay, Juergen

    1999-05-01

    with lower sulphur and ash content. Because of higher coal prices and the introduction of hard budget constraints, power plants improved their generation efficiency, which also contributed to the reduction of emissions. After 1994, the decline in SO{sub 2} emissions has continued thanks to the installation of pollution abatement equipment. The final article (Article 6) analyses the conversion of small boilers for heat production from fossil to biomass fuels. It compares the results of six boiler conversion projects in the Baltic states with seven projects in Russia and the Czech Republic. The results show that the conversions in the Baltic states reduced the fuel cost of heat production and achieved cost-effective reductions of SO{sub 2} and carbon dioxide (CO{sub 2}). It also resulted in transfer of technology and know-how, less dependence on imported fuels and the creation of local markets for biofuels 73 refs, 3 figs, 1 tab

  20. Y-12 National Security Complex Biological Monitoring And Abatement Program 2008 Calendar Year Report

    Energy Technology Data Exchange (ETDEWEB)

    Peterson, M. J.; Greeley Jr., M. S.; Mathews, T. J.; Morris, G. W.; Roy, W. K.; Ryon, M. G.; Smith, J. G.; Southworth, G. R.

    2009-07-01

    The National Pollutant Discharge Elimination System (NPDES) permit issued for the Oak Ridge Y-12 National Security Complex (Y-12 Complex) which became effective May 1, 2006, continued a requirement for a Biological Monitoring and Abatement Program (BMAP). The BMAP was originally developed in 1985 to demonstrate that the effluent limitations established for the Y-12 Complex protected the classified uses of the receiving stream (East Fork Poplar Creek: EFPC), in particular, the growth and propagation of aquatic life (Loar et al. 1989). The objectives of the current BMAP are similar, specifically to assess stream ecological conditions relative to regulatory limits and criteria, to assess ecological impacts as well as recovery in response to Y-12 operations, and to investigate the causes of continuing impacts. The BMAP consists of three tasks that reflect complementary approaches to evaluating the effects of the Y-12 Complex discharges on the biotic integrity of EFPC. These tasks include: (1) bioaccumulation monitoring, (2) benthic macroinvertebrate community monitoring, and (3) fish community monitoring. As required by the NPDES permit, the BMAP benthic macroinvertebrate community monitoring task includes studies to annually evaluate the receiving stream's biological integrity in comparison to TN Water Quality Criteria. BMAP monitoring is currently being conducted at five primary EFPC sites, although sites may be excluded or added depending upon the specific objectives of the various tasks. Criteria used in selecting the sites include: (1) location of sampling sites used in other studies, (2) known or suspected sources of downstream impacts, (3) proximity to U.S. Department of Energy (DOE) Oak Ridge Reservation (ORR) boundaries, (4) appropriate habitat distribution, and (5) access. The primary sampling sites include upper EFPC at kilometers (EFKs) 24.4 and 23.4 [upstream and downstream of Lake Reality (LR) respectively]; EFK 18.7 (also EFK 18.2 and 19), located off

  1. Y-12 National Security Complex Biological Monitoring and Abatement Program 2007 Calendar Yeare Report

    Energy Technology Data Exchange (ETDEWEB)

    Peterson, M.J.; Greeley, M. S. Jr.; Morris, G. W.; Roy, W. K.; Ryan, M. G.; Smith, J. G.; Southworth, G. R.

    2008-07-01

    The National Pollutant Discharge Elimination System (NPDES) permit issued for the Oak Ridge Y-12 National Security Complex (Y-12 Complex) which became effective May 1, 2006, continued a requirement for a Biological Monitoring and Abatement Program (BMAP). The BMAP was originally developed in 1985 to demonstrate that the effluent limitations established for the Y-12 Complex protected the classified uses of the receiving stream (East Fork Poplar Creek: EFPC), in particular, the growth and propagation of aquatic life (Loar et al. 1989). The objectives of the current BMAP are similar, specifically to assess stream ecological conditions relative to regulatory limits and criteria, to assess ecological impacts as well as recovery in response to Y-12 operations, and to investigate the causes of continuing impacts. The BMAP consists of three tasks that reflect complementary approaches to evaluating the effects of the Y-12 Complex discharges on the biotic integrity of EFPC. These tasks include: (1) bioaccumulation monitoring, (2) benthic macroinvertebrate community monitoring, and (3) fish community monitoring. As required by the NPDES permit, the BMAP benthic macroinvertebrate community monitoring task includes studies to annually evaluate the receiving stream's biological integrity in comparison to TN Water Quality Criteria. BMAP monitoring is currently being conducted at five primary EFPC sites, although sites may be excluded or added depending upon the specific objectives of the various tasks. Criteria used in selecting the sites include: (1) location of sampling sites used in other studies, (2) known or suspected sources of downstream impacts, (3) proximity to U.S. Department of Energy (DOE) Oak Ridge Reservation (ORR) boundaries, (4) appropriate habitat distribution, and (5) access. The primary sampling sites include upper EFPC at kilometers (EFKs) 24.4 and 23.4 [upstream and downstream of Lake Reality (LR) respectively]; EFK 18.7 (also EFK 18.2 and 19), located

  2. Control of dangerous substances in discharges and microbiological abatement: European framework and a case study of an ozone disinfection system.

    Science.gov (United States)

    Ostoich, M; Serena, F; Falletti, L; Fantoni, A

    2013-01-01

    Directive 2000/60/EC requires the achievement of a 'good chemical status' for surface water within pre-established dates. Disinfection is needed to achieve compulsory final microbial limit values (in Italy for wastewater discharges the parameter Escherichia coli - EC - is imposed by law with a maximum limit value of 5,000 cfu/100 mL). Liquid waste and disinfection by-products must be considered when designing appropriate monitoring of dangerous substances; the specific classes of substances must be investigated according to the typology of received wastewaters and liquid wastes (where applicable) and specific analytical techniques, with Limit of Detection (LOD) lower than the limit values, must be applied; the difficulties faced by national and regional environmental control Agencies is that these techniques have to be applied during ordinary activity and not only for research purposes. The study aims to present the control of dangerous substances, as a screening view, in wastewater treatment plant (WWTP) discharges in the province of Venice (Northern Italy) for the period 2007-2010 based on available data from institutional controls. In addition, the wastewater disinfection process with ozone applied to a medium size WWTP (45,000 Population Equivalents) is presented as a case study, with a view to assessing the microbiological abatement efficacy and the presence of dangerous substances. Discharge quality of the WWTPs in the province of Venice presented mean values that were higher than the LOD, but only for certain metals. For the Paese plant, zinc and chloroform were the only micro-pollutants detected with a higher level than the LOD. From microbiological data in the period 2006-2011 the disinfection abatement efficiency for Paese was, in most cases above 99% for EC, faecal coliform (FC), faecal streptococci (FS) while efficiency was slightly lower for total coliform (TC); however, the proposed criterion aimed at respecting 99.99% abatement was not completely

  3. Efeitos Entrincheramento e Alinhamento e Informatividade dos Lucros Contabeis: estudo comparativos

    Directory of Open Access Journals (Sweden)

    Antonio Carlos Coelho

    2017-08-01

    Full Text Available O objetivo da pesquisa consiste em analisar se efeitos decorrentes de estrutura de propriedade concentrada predominam na forma de entrincheiramento ou de alinhamento para o atributo de informatividade do lucro, condicionado à presença de padrão contábil baseado em princípios. Foi utilizada amostra de empresas listadas na BM&FBovespa considerando o período de 2008 a 2014. Sarlo Neto et al. (2010 exploraram o tema em pesquisa similar, que fundamenta e se compara neste estudo. Aplicaram-se modelos baseados em Easton e Harris (1991 associando informatividade com concentração de votos em posse do maior acionista e indicador de divergência entre direitos do maior acionista (fluxo de caixa e voto. Os dados foram coletados nos sistemas Economática® e SInC® e processados por regressões com estimação com dados em painel. Sob a hipótese de interferência dos efeitos estudados na informatividade dos lucros, evidenciou-se que há: persistência do coeficiente lucro/retorno indicando significante informatividade dos lucros e influência do efeito entrincheiramento na informatividade, não se rejeitando a hipótese. Ademais, a informatividade apresentou-se mais efetiva na vigência do padrão contábil IFRS.

  4. Estudio comparativo de las diferentes tecnologías de celdas de combustible

    Directory of Open Access Journals (Sweden)

    Alvarado-Flores, J.

    2013-06-01

    Full Text Available Fuel cells generate electricity and heat during electrochemical reaction which happens between the oxygen and hydrogen to form the water. Fuel cell technology is a promising way to provide energy for rural areas where there is no access to the public grid or where there is a huge cost of wiring and transferring electricity. In addition, applications with essential secure electrical energy requirement such as uninterruptible power supplies (UPS, power generation stations and distributed systems can employ fuel cells as their source of energy. The current paper includes a comparative study of basic design, working principle, applications, advantages and disadvantages of various technologies available for fuel cells. In addition, techno-economic features of hydrogen fuel cell vehicles (FCV and internal combustion engine vehicles (ICEV are compared. The results indicate that fuel cell systems have simple design, high reliability, noiseless operation, high efficiency and less environmental impact. The aim of this paper is to serve as a convenient reference for fuel cell power generation reviews.Las celdas de combustible generan electricidad y calor durante la reacción electroquímica que ocurre entre el oxígeno e hidrógeno para formar agua. La tecnología de la celda de combustible es un camino prometedor para proporcionar energía en áreas rurales, donde no hay acceso a la red eléctrica pública, o donde hay un costo enorme en el cableado y transferencia de electricidad. Además, las celdas de combustible, pueden emplearse como fuente de energía, para asegurar la energía eléctrica como por ejemplo, en fuentes de potencia ininterrumpida (uninterruptible power supplies, UPS, estaciones de generación de energía y sistemas de distribución. En este artículo, se hace un estudio comparativo sobre diseño básico, principios de funcionamiento, aplicaciones, ventajas y desventajas de las diversas tecnologías disponibles para celdas de

  5. AC low-pressure plasmas generated by using annular-shaped electrodes for abatement of pollutants emitted during semiconductor manufacturing processes

    International Nuclear Information System (INIS)

    Hur, Min; Lee, Jae Ok; Song, Young Hoon

    2011-01-01

    A plasma abatement system operating at low pressures is set up with the aim of treating pollutants emitted by the semiconductor industry. The abatement device is characterized by using a tube-shaped reactor design and a bipolar alternating current, which allows an easy connection to pre-existing pipelines in the semiconductor industry and low installation cost, respectively. By using optical emission spectroscopy (OES) and Fourier transform infrared spectroscopy (FTIR), we analyzed the discharge characteristics and abatement efficiency with emphasis on the working pressure effect. In the case of CF 4 , the destruction and removal efficiency (DRE) is greatly reduced with increasing pressure. However, the pressure has a relatively small influence on the DRE for tetrakis(ethylmethylamino)zirconium (TEMAZ), which is significantly destroyed only with several hundred watts and without any liquefied byproducts. This difference is closely related to the spatial distribution of reactive species and to the chemical bond strengths of the pollutant's components. Finally, the applicability of the abatement device is discussed based on the experimental results.

  6. Examination of the conditions of a broadening of the general tax for polluting activities to the intermediate energy consumptions. Incentive mechanisms for the abatement of greenhouse gas emissions

    International Nuclear Information System (INIS)

    Bureau, D.

    2000-05-01

    Among the various existing incentive mechanisms for the abatement of greenhouse gas emissions, like the pollution regulations and the financial help for energy mastery, this document analyzes the conditions of efficiency of the negotiated voluntary agreements and of the tradable emission quotas and their articulation with the fiscality. (J.S.)

  7. Projections of multi-gas emissions and carbon sinks, and marginal abatement cost functions modelling for land-use related sources

    NARCIS (Netherlands)

    Graveland C; Bouwman AF; Vries B de; Eickhout B; Strengers BJ; MNV

    2003-01-01

    This report presents estimates of the costs of abatement of greenhouse gas emissions associated with landfills as a source of methane (CH4), sewage as a source of methane and nitrous oxide (CH4 and N2O, respectively) and carbon (C) sequestration in forest plantations. This is done in the form of

  8. The abatement of indigo carmine using active chlorine electrogenerated on ternary Sb2O5-doped Ti/RuO2-ZrO2 anodes in a filter-press FM01-LC reactor

    International Nuclear Information System (INIS)

    Palma-Goyes, R.E.; Vazquez-Arenas, J.; Torres-Palma, R.A.; Ostos, C.; Ferraro, F.; González, I.

    2015-01-01

    Dimensionally Stable Anodes (DSA) of Sb 2 O 5 -doped Ti/RuO 2 -ZrO 2 are prepared by the Pechini method to perform the degradation of indigo carmine (IC) under conditions similar to textile wastewater effluents. XRD results along with Rietveld refinement reveal that the co-deposited phases on the DSA exhibit a tetragonal crystal structure (P4/mmm) for RuO 2 and monoclinic structure (P2/m) for ZrO 2 . Degradation tests conducted in solutions containing 0.64 mM IC and 0.05 M NaCl using a filter-press reactor (FM01-LC) show that the degradation rate is faster and more efficient at 200 A m −2 with a flow rate of 5 L min −1 , although the energy consumption is moderately higher. Under this condition, the pollutant is efficiently removed, and converted to aliphatic acid compounds of low molecular weight, as indicated by 90 % Chemical Oxygen Demand (COD), 22 % Total Organic Carbon (TOC) elimination, along with an Average Oxidation State (AOS) value equal to 3.0. The energy consumptions revealed that it is feasible to carry out the IC degradation under reasonable operating costs. Topological and Natural Bond Orbital (NBO) analyses are computed using density functional theory (DFT), and combined with experimental results to propose a reaction pathway for IC abatement

  9. Mercury abatement report on the US Department of Energy Oak Ridge Y- 12 Plant for fiscal year 1995

    International Nuclear Information System (INIS)

    1995-11-01

    This Annual Mercury Abatement Report for fiscal year 1995 summarizes the status of activities and the levels of mercury contamination in East Fork Poplar Creek (EFPC) resulting from activities at the US Department of Energy's Oak Ridge Y-12 Plant. The report outlines the status of the on-going project activities in support of project compliance, the results of the ongoing sampling and characterization efforts, the biological monitoring activities, and our conclusions relative to the progress in demonstrating compliance with the National Pollutant Discharge Elimination (NPDES) permit. Overall, the pace of mercury activities at the Y-12 Plant is ahead of the compliance schedules in the NPDES permit and new and exciting opportunities are being recognized for achieving additional mercury reductions. These opportunities were not felt to be achievable several years ago

  10. Carbon dioxide abatement in an empirical model of the Indian economy: an integration of micro and macro analysis

    International Nuclear Information System (INIS)

    Gupta, S.

    1995-01-01

    Global warming and associated climate change are the likely results of an enhanced greenhouse effect due to excessive emission of greenhouse gases. Carbon dioxide (CO 2 ) is the largest contributor to the greenhouse effect. The costs of stabilising or reducing CO 2 emissions are estimated by two types of models. Macro models based on aggregate macroeconomic relationships, study the macroeconomic impacts of and responses to different policies. These overestimate costs as technological responses are not adequately modelled. Micro models contain the necessary technical information to assess the abatement potential, but exclude indirect costs. In this study, a methodology for integrating the two approaches for developing countries is proposed and illustrated for India. The problems associated with modelling developing economies are recognized in the integrated model proposed. (Author)

  11. [The organization of key populations connected to HIV transmission: an intervention to abate stigma; Mexico, 2005-2009].

    Science.gov (United States)

    Cuadra-Hernández, Silvia Magali; Zarco-Mera, Ángel; Infante-Xibillé, César; Caballero-García, Marta

    2012-01-01

    A qualitative and quantitative approach forms the base of this analysis of the results of "Vida Digna," a project aimed at abating stigma and discrimination in the HIV transmission field with actions taken by civil society organizations from 2005 to 2009 in the Mexican region of El Bajío. The results were analyzed in 2009 and 2010. The organizations involved were made up of key populations, defined as groups vulnerable to infection but also capable of resisting and controlling the transmission of HIV and the stigma and discrimination that are important barriers in the seeking of care and the achievement of effective HIV control. We describe and analyze the actions taken and the strengthening of the participating organizations. The visibility of new social actors such as transgender women and injecting drug users, as well as informative activities directed at journalists, the police and the military to prevent the criminalization and persecution of these groups, are highlighted.

  12. Assessment of blood lead level declines in an area of historical mining with a holistic remediation and abatement program.

    Science.gov (United States)

    Schoof, Rosalind A; Johnson, Dina L; Handziuk, Emma R; Landingham, Cynthia Van; Feldpausch, Alma M; Gallagher, Alexa E; Dell, Linda D; Kephart, Amy

    2016-10-01

    Lead exposure and blood lead levels (BLLs) in the United States have declined dramatically since the 1970s as many widespread lead uses have been discontinued. Large scale mining and mineral processing represents an additional localized source of potential lead exposure in many historical mining communities, such as Butte, Montana. After 25 years of ongoing remediation efforts and a residential metals abatement program that includes blood lead monitoring of Butte children, examination of blood lead trends offers a unique opportunity to assess the effectiveness of Butte's lead source and exposure reduction measures. This study examined BLL trends in Butte children ages 1-5 (n= 2796) from 2003-2010 as compared to a reference dataset matched for similar demographic characteristics over the same period. Blood lead differences across Butte during the same period are also examined. Findings are interpreted with respect to effectiveness of remediation and other factors potentially contributing to ongoing exposure concerns. BLLs from Butte were compared with a reference dataset (n=2937) derived from the National Health and Nutrition Examination Survey. The reference dataset was initially matched for child age and sample dates. Additional demographic factors associated with higher BLLs were then evaluated. Weights were applied to make the reference dataset more consistent with the Butte dataset for the three factors that were most disparate (poverty-to-income ratio, house age, and race/ethnicity). A weighted linear mixed regression model showed Butte geometric mean BLLs were higher than reference BLLs for 2003-2004 (3.48vs. 2.05µg/dL), 2005-2006 (2.65vs. 1.80µg/dL), and 2007-2008 (2.2vs. 1.72µg/dL), but comparable for 2009-2010 (1.53vs. 1.51µg/dL). This trend suggests that, over time, the impact of other factors that may be associated with Butte BLLs has been reduced. Neighborhood differences were examined by dividing the Butte dataset into the older area called "Uptown

  13. Costs of CO2 abatement in Egypt using both bottom-up and top-down approaches

    International Nuclear Information System (INIS)

    El Mahgary, Y.; Ibrahim, A.-F.; Shama, M.A.-F.

    1994-01-01

    Within the frame of UNEP's project on the Methodologies of Determining the Costs of Abatement of GHG emissions, a case study on Egypt was undertaken by the Technical Research Centre of Finland (VTT) in cooperation with the Egyptian Environment Affairs Authority (EEAA), together with an expert team from different Egyptian organizations. Both bottom-up and top-down approaches were used. Several measures/technologies, including energy conservation, fuel switching, use of renewable energy and material replacement, were considered to decrease CO 2 emissions. It was found that most of the measures were cost-effective, as a considerable potential for energy conservation exists in Egypt. The impact of energy conservation measures on the economy of the country was found to be positive using a macroeconomic model. (author)

  14. Reaping the carbon rent: Abatement and overallocation profits in the European cement industry, insights from an LMDI decomposition analysis

    International Nuclear Information System (INIS)

    Branger, Frédéric; Quirion, Philippe

    2015-01-01

    We analyse variations of carbon emissions in the European cement industry from 1990 to 2012, at the European level (EU 27), and at the national level for six major producers (Germany, France, Spain, the United Kingdom, Italy and Poland). We apply a Log-Mean Divisia Index (LMDI) method, cross-referencing data from three databases: the Getting the Numbers Right (GNR) database developed by the Cement Sustainability Initiative, the European Union Transaction Log (EUTL), and the Eurostat International Trade database. Our decomposition method allows seven channels of emission change to be distinguished: activity, clinker trade, clinker share, alternative fuels, thermal and electrical energy efficiency, and electricity decarbonisation. We find that, apart from a slow trend of emission reductions coming from technological improvements (first from a decrease in the clinker share, then from an increase in alternative fuels), most of the emission change can be attributed to the activity effect. Using counterfactual scenarios, we estimate that the introduction of the EU ETS brought small but positive technological abatement (2.2% ± 1.3% between 2005 and 2012). Moreover, we find that the European cement industry has gained 3.5 billion Euros of “overallocation profits”, mostly due to the slowdown of production. - Highlights: • We analyse variations of carbon emissions in the European cement industry. • We apply a Log-Mean Divisia Index (LMDI) method. • Most of the emission changes can be attributed to the activity effect. • The EU ETS brought small but positive technological abatement. • The European cement industry has gained 3.5 billion Euros of “overallocation profits”

  15. Abatement cost of GHG emissions for wood-based electricity and ethanol at production and consumption levels.

    Directory of Open Access Journals (Sweden)

    Puneet Dwivedi

    Full Text Available Woody feedstocks will play a critical role in meeting the demand for biomass-based energy products in the US. We developed an integrated model using comparable system boundaries and common set of assumptions to ascertain unit cost and greenhouse gas (GHG intensity of electricity and ethanol derived from slash pine (Pinus elliottii at the production and consumption levels by considering existing automobile technologies. We also calculated abatement cost of greenhouse gas (GHG emissions with respect to comparable energy products derived from fossil fuels. The production cost of electricity derived using wood chips was at least cheaper by 1 ¢ MJ-1 over electricity derived from wood pellets. The production cost of ethanol without any income from cogenerated electricity was costlier by about 0.7 ¢ MJ-1 than ethanol with income from cogenerated electricity. The production cost of electricity derived from wood chips was cheaper by at least 0.7 ¢ MJ-1 than the energy equivalent cost of ethanol produced in presence of cogenerated electricity. The cost of using ethanol as a fuel in a flex-fuel vehicle was at least higher by 6 ¢ km-1 than a comparable electric vehicle. The GHG intensity of per km distance traveled in a flex-fuel vehicle was greater or lower than an electric vehicle running on electricity derived from wood chips depending on presence and absence of GHG credits related with co-generated electricity. A carbon tax of at least $7 Mg CO2e-1 and $30 Mg CO2e-1 is needed to promote wood-based electricity and ethanol production in the US, respectively. The range of abatement cost of GHG emissions is significantly dependent on the harvest age and selected baseline especially for electricity generation.

  16. "Seríamos el espejo de lo que es Villa Pehuenia": Análisis comparativo-regional de los conflictos territoriales del pueblo mapuche en áreas turísticas de la provincia de Neuquén "Seriamos o espelho do que é Villa Pehuenia": Análise comparativa-regional dos conflitos territoriais do povo mapuche em áreas turísticas na província de Neuquén "We would be a mirror image of what Villa Pehuenia is": Regional comparative analysis of the territorial conflicts of indigenous mapuche people in tourist areas of Neuquén province

    Directory of Open Access Journals (Sweden)

    Sebastián Valverde

    2010-06-01

    Full Text Available En la región cordillerana de Norpatagonia (en la provincia de Neuquén se vienen dando crecientes conflictos territoriales protagonizados por el pueblo indígena mapuche, como resultado de la expansión turística, que posee una importancia central en esta zona. En el presente trabajo nos proponemos como objetivo analizar desde la óptica de la Antropología Social estas dinámicas, atendiendo a los diversos factores causales y a la vez, a la gran diversidad de situaciones dentro de este fenómeno. Se busca sistematizar estos procesos a partir de una perspectiva comparativa que reúne la experiencia de nuestro trabajo en los departamentos de Aluminé, Huiliches, Lácar y Los Lagos.Na região da cordilheira de Norpatagonia (província de Neuquén, vêm ocorrendo crescentes conflitos territoriais protagonizados pelo povo indígena mapuche, como resultado da expansão turística, que tem uma importância central nessa área. Nesse trabalho, o nosso objetivo é analisar essas dinâmicas da ótica da Antropologia Social, atendendo aos diversos fatores causais e, ao mesmo tempo, à grande diversidade de situações dentro desse fenômeno. Tentamos sistematizar esses processos a partir de uma perspectiva comparativa que reúne a experiência de nosso trabalho nos departamentos de Aluminé, Huiliches, Lácar e Los Lagos.In the mountain range region of North Patagonia (Neuquén province increasing territorial conflicts are taking place, carried out by indigenous mapuche people, as a consequence of the expansion of tourism, which is of main importance in the area. In this article, we intend to analyze these dynamics from the point of view of Social Anthropology, taking into account the different causal factors and, at the same time, the great variety of situations within this phenomenon. We intend to systematize these processes on the basis of a comparative perspective that brings together the experience of our work in the districts of Alumin

  17. Camponeses e esquecimento na Antiguidade Tardia: as revoltas dos bagaudas e dos circunceliões

    Directory of Open Access Journals (Sweden)

    Uiran Gebara da Silva

    2016-12-01

    Full Text Available Esse artigo apresenta alguns dos problemas com os quais eu tive de lidar ao realizar um estudo comparativo entre dois conjuntos de revoltas rurais do Império Romano tardio: as revoltas dos bagaudas na Gália e dos circunceliões na África. O artigo toma como eixo articulador a hipótese lançada por E. A. Thompson sobre o papel do esquecimento na produção dos relatos antigos sobre os bagaudas e a problematiza. Num segundo momento o artigo trata do problema relacionado à compreensão do caráter social de ambos os grupos, levando em consideração os múltiplos relatos presentes nas fontes antigas e as divergentes interpretações modernas sobre eles, enfatizando a necessidade de se reconhecer a tópica da inversão social como um elemento que diferencia os relatos sobre os revoltosos daqueles sobre a bandidagem. Outro elemento importante é o reconhecimento da heterogeneidade dos discursos cristãos com relação às classes subalternas e aos revoltosos, que apontam não para um fortalecimento do patronato rural, mas para o enfraquecimento ou para a crise dessas relações no campo tardo-romano.

  18. Impact of electric range and fossil fuel price level on the economics of plug-in hybrid vehicles and greenhouse gas abatement costs

    International Nuclear Information System (INIS)

    Özdemir, Enver Doruk; Hartmann, Niklas

    2012-01-01

    In this paper, the energy consumption shares of plug-in hybrid vehicles (PHEVs) for electricity from the grid and conventional fuel depending on electric driving range are estimated. The resulting mobility costs and greenhouse gas (GHG) abatement costs per vehicle kilometer for the year 2030 are calculated and optimal electric driving range (which indicates the size of the battery) is found for different oil price levels with the help of a MATLAB based model for a typical compact passenger car (e.g. VW Golf). The results show that the optimum electric driving range for minimum mobility costs of a PHEV is between 12 and 32 km. Furthermore, optimum GHG abatement costs are achieved with an electric driving range between 16 and 23 km. These results are considerable lower than most market ready PHEVs (electric driving range of 50 to 100 km), which shows that the automobile industry should concentrate on shorter electric driving range for PHEVs in the near future to offer cost optimum mobility and low GHG abatement costs. However, the oil price level and the consumer driving habits impact heavily on the cost performance as well as the optimum electric driving range of plug-in hybrid vehicles. - Highlights: ► We analyze the energy consumption (and share of grid electricity) of plug-in hybrid vehicles. ► We analyzed the mobility costs and GHG abatement costs depending on electric driving range. ► Mobility costs of plug-in hybrid vehicles can be lower than those of conventional diesel vehicles in 2030. ► The optimum mobility costs are achieved with the electric driving range between 12 and 32 km. ► The optimum GHG abatement costs are achieved with the electric driving range between 16 and 23 km.

  19. Phytoremediation, a sustainable remediation technology? II: Economic assessment of CO2 abatement through the use of phytoremediation crops for renewable energy production

    International Nuclear Information System (INIS)

    Witters, N.; Mendelsohn, R.; Van Passel, S.; Van Slycken, S.; Weyens, N.; Schreurs, E.; Meers, E.; Tack, F.; Vanheusden, B.; Vangronsveld, J.

    2012-01-01

    Phytoremediation could be a sustainable remediation alternative for conventional remediation technologies. However, its implementation on a commercial scale remains disappointing. To emphasize its sustainability, this paper examines whether and how the potential economic benefit of CO 2 abatement for different crops used for phytoremediation or sustainable land management purposes could promote phytotechnologies. Our analysis is based on a case study in the Campine region, where agricultural soils are contaminated with mainly cadmium. We use Life Cycle Analysis to show for the most relevant crops (willow (Salix spp), energy maize (Zea mays), and rapeseed (Brassica napus)), that phytoremediation, used for renewable energy production, could abate CO 2 . Converting this in economic numbers through the Marginal Abatement Cost of CO 2 (€ 20 ton −1 ) we can integrate this in the economic analysis to compare phytoremediation crops among each other, and phytoremediation with conventional technologies. The external benefit of CO 2 abatement when using phytoremediation crops for land management ranges between € 55 and € 501 per hectare. The purpose of these calculations is not to calculate a subsidy for phytoremediation. There is no reason why one would prefer phytoremediation crops for renewable energy production over “normal” biomass. Moreover, subsidies for renewable energy already exist. Therefore, we should not integrate these numbers in the economic analysis again. However, these numbers could contribute to making explicit the competitive advantage of phytoremediation compared to conventional remediation technologies, but also add to a more sustainably funded decision on which crop should be grown on contaminated land. -- Highlights: ► We add CO 2 abatement for each remediation crop to the private economic analysis. ► This values the advantage of phytoremediation compared to conventional remediation. ► This leads to a crop choice that considers an

  20. Sustainable gasification–biochar systems? A case-study of rice-husk gasification in Cambodia, Part II: Field trial results, carbon abatement, economic assessment and conclusions

    International Nuclear Information System (INIS)

    Shackley, Simon; Carter, Sarah; Knowles, Tony; Middelink, Erik; Haefele, Stephan; Haszeldine, Stuart

    2012-01-01

    In part I we described the gasification technology and characterised the physio-chemical properties and environmental impacts of the rice husk char (RHC) by-product. In part II we present summary results from field trials using the RHC, and provide an estimate of the carbon abatement and economic evaluation of the system. Statistically significant yield increases are demonstrated for RHC addition in irrigated rice cultivation (33% increase in paddy rice yield for a 41.5 t (dry weight) RHC application per hectare). The carbon abatement from the RHC addition is approximately 0.42 t CO 2 t −1 rice husk; including energy generation from gasification this increases to ca. 0.86 tCO 2 t −1 . Assuming a carbon value of $5 t CO 2 t −1 , and agronomic value of $3 t −1 RHC based on the field trials, the economic value of the RHC varies from $9 t −1 (including only recalcitrant carbon) to $15 t −1 (including avoided emissions from energy production). We summarise results from parts I and II, concluding that the gasification–biochar system meets many of the criteria of sustainability, but requires better waste water management and more field trials to demonstrate repeatable agronomic efficacy of RHC application. - Highlights: ► Field trials show statistically significant rice yield increases using rice husk char (RHC). ► Carbon abatement of 0.42 t CO 2 t −1 rice husk from RHC production. ► Bioenergy generation via gasification gives carbon abatement of 0.44 t CO 2 t −1 husk. ► Total carbon abatement is therefore ca. 0.86 t CO 2 t −1 husk. ► Agronomic value from trials is $3 t −1 char; assuming $5 CO 2 t −1 , the total value of RHC is $9–$15 t −1 .

  1. Composição nutricional do casco da tartaruga-da-Amazônia (Podocnemis expansa criada em cativeiro e em idade de abate Centesimal nutrition of the tartaruga-da-Amazônia Podocnemis expansa shell bred in captivity and at slaughter age

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    Renata Cristina Scarlato

    2007-08-01

    Full Text Available A criação de tartarugas em cativeiro no Brasil vem se expandindo nos últimos anos, destacando-se o aumento do volume de abate da espécie Podocnemis expansa para obtenção de carne. Este estudo foi realizado na UFRuralRJ, objetivando-se analisar quantitativamente a composição centesimal, valor calórico, teor de colesterol, perfil em ácidos graxos e aminoácidos, e minerais de 60 cascos de P. expansa em idade de abate mantidas em criatório legalizado e registrado pelo IBAMA. Concluiu-se que o casco de P. expansa é rico em nutrientes, apresentando proteína de alto valor biológico para adultos, lipídios, ácidos graxos essenciais, minerais e baixo teor de colesterol, possibilitando sua utilização como suplemento nutricional após estudos futuros comprobatórios da biodisponibilidade dos nutrientes presentes.Breeding of turtles in Brazil has increased recently, and the increase of the volume of the species Podocnemis expansa to obtain meat is significant. This study was done at UFRuralRJ, and the aim was to analyse the centesimal composition, caloric value, tenor of cholesterol, fatty acids and amino acids and minerals of 60 P. expansa shells quantitativity at slaughter age maintained by IBAMA, a legal and registered breeder. It can be concluded that the P. expansa shell is rich in nutrients, with a high biological value protein for adults, lipids, essentials fatty acids, minerals and low tenor of cholesterol, possible to use as a nutritional supplement after corroborating future studies of the biodisponibility of the present nutrients.

  2. Efeito do método de abate e do sexo sobre a qualidade da carne de capivara (Hydrochaeris hydrochaeris Effect of slaughter method and gender on the meat quality of capybara (Hydrochaeris hydrochaeris L. 1766

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    Sandra H. I. Oda

    2004-09-01

    Full Text Available O presente trabalho teve como objetivo avaliar o efeito de dois métodos de abate (MA e do sexo sobre a qualidade de carne de capivaras. Os métodos de abate avaliados foram o humanitário (MH e por tiro (MT, sendo utilizados 2 lotes de 10 animais, um deles contendo 5 machos e 5 fêmeas e outro com 8 machos e 2 fêmeas, nos quais foram avaliados os valores de pH na 1ª, 3ª, 5ª, 7ª, 9ª, 11ª e 24ª horas após o abate e a perda de peso por cozimento (PPC, a cor e a força de cisalhamento (FC, em porções do músculo longissimus dorsi, retiradas entre a 10ª e 12ª vértebras. Os resultados obtidos indicaram que as médias de pH não foram influenciadas pelo MA e pelo sexo. Os valores médios foram: 6,24; 6,05; 6,01; 6,01; 6,03; 6,04 e 5,96 às 1, 3, 5, 7, 9, 11 e 24 horas, respectivamente. Em relação à cor, o MT apresentou valor de L* (32,40 superior (PThe aim of this study was to assess the effect of two slaughter methods (SM and the gender on the quality of capybara meat. The slaughter methods assessed were the humanitarian (HM and by head-shot (HS. Two lots of 10 animals were used, one of them containing 5 males and 5 females and the other containing 8 males and 2 females. Values of pH of the longissimus dorsi muscle (between the vertebras 10th and 12th after 1, 3, 5, 7, 9, 11 and 24h post mortem (p. m., color (L, a e b, weight losses by cooking (WLC and shear force (SF were assessed on samples obtained at these points. The results indicated that pH means were not influenced by both SM and sex. The medium values were: 6.24; 6.05; 6.01; 6.01; 6.03; 6.04 and 5.96 at 1, 3, 5, 7, 9, 11 and 24 hours respectively. That demonstrated that in those encourage the installation of the rigor mortis superficial with reduced extension glicolitic. Regarding the color, HS presented higher L* (32.40 values (P<0,05 than HM (29.59, and the effect of gender on this parameter was not observed. On the other color parameters and on WLC no differences among

  3. Efeito do manejo pré-abate sobre alguns parâmetros fisiológicos em fêmeas suínas pesadas Effect of pre-slaughter management on physiological parameters of heavy-weight female pigs

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    Osmar Antonio Dalla Costa

    2009-06-01

    Full Text Available O objetivo neste trabalho foi avaliar o efeito do período de descanso (3, 5, 7 e 9 horas dos suínos no frigorífico (PDF e da localização dos suínos na carroceria do caminhão (PBO, quando transportados, no inverno ou verão, sobre alguns parâmetros fisiológicos avaliados em 64 fêmeas, com peso médio de 130kg para abate, durante o manejo pré-abate. Para a análise estatística, foram considerados, no modelo de análise da variância, os efeitos de bloco, PDF, PBO e da interação (bloco x PDF, entre outros. O PDF influenciou, significativamente, as concentrações de lactato no sangue e cortisol na saliva. Suínos que descansaram 5 e 7 horas apresentaram maior concentração de lactato em relação aos animais que descansaram 3 e 9 horas. No transporte, a freqüência cardíaca foi muito maior em relação aos demais locais avaliados. Concluiu-se que o incremento do PDF não promove mudanças na freqüência cardíaca, nas concentrações de glicose e CPK no sangue e cortisol na saliva, mas interfere na concentração de lactato no sangue dos suínos.The aim of the research was to evaluate the effect of pig lairage time (PDF=3, 5, 7 and 9 hours and evaluate the effect of pig position into the truck (PBO during transportation to slaughterhouse, in winter or summer conditions, on some physiologic parameters evaluated on 64 heavyweight females with mean liveweight of 130kg during pre-slaughter events. The following effects were considered in the statistical analysis of variance model: block (BL=summer farm or winter farm, PDF, PBO and interaction (Block x PDF, under other factors. The PDF influenced significativelly blood lactate and saliva cortisol levels. Pig submitted to 5 and 7 hours of lairage had higher levels of lactate when compared to pigs submitted to 3 and 9 hours of lairage. During transport the heart rate were higher than in other pre-slaughter events. It is concluded that increasing PDF above 3 hours had no effects on heart

  4. Texto literario y texto fílmico : análisis comparativo-textual de "El invierno en Lisboa, Beltenebros y Plenilunio" de Antonio Muñoz Molina

    OpenAIRE

    Vázquez Naveira, Marta Maria

    2016-01-01

    En la tesis Texto literario y texto jilmico. A nálisis comparativo-textual de El invierno en Lisboa, Beltenebros y Plenilunio de Antonio Muñoz Molina analizamos, desde una perspectiva narratológica y filmica, las tres novelas del escritor y sus adaptaciones cinematográficas. El alcance de las relaciones entre cine y literatura es muy amplio y opera en ambas direcciones. En este trabajo se lleva a cabo un estudio comparativo de los textos con el fin de comprobar si mantienen ...

  5. Competência social, inclusão escolar e autismo: um estudo de caso comparativo

    OpenAIRE

    Camargo, Síglia Pimentel Höher; Bosa, Cleonice Alves

    2012-01-01

    A presente pesquisa analisou o perfil de competência social (CS) de uma criança pré-escolar com autismo, na escola comum comparado a uma criança com desenvolvimento típico e investigou a influência do ambiente escolar (sala de aula ou pátio) no perfil de CS de ambas. As interações sociais com seus pares foram filmadas, na escola, e a codificação dos vídeos foi realizada por um avaliador independente. Utilizou-se como instrumento a versão adaptada da Escala Q-sort de CS. Os resultados demonstr...

  6. DIGESTIBILIDADE IN VITRO E IN VIVO DE PROTEÍNAS DE ALIMENTOS: ESTUDO COMPARATIVO

    Directory of Open Access Journals (Sweden)

    C. V. PIRES

    2008-10-01

    Full Text Available

    O presente trabalho teve como objetivos determinar a digestibilidade in vivo, ajustar equações para a determinação da digestibilidade in vitro por meio de diferentes métodos e verificar qual método desenvolvido para a digestibilidade in vitro apresenta maior correlação com a digestibilidade in vivo. Foram utilizadas as seguintes fontes de proteína: carne de rã sem osso, carne de rã com osso, carne de rã mecanicamente separada (CMS, carne bovina, ovo em pó, caseína, trigo, milho, soja convencional, soja isenta de inibidor de tripsina Kunitz e de lipoxigenases (soja KTI-LOX-, proteína texturizada de soja (PTS e feijão. Para o cálculo da digestibilidade in vitro foram utilizados os valores de pH obtidos em 10 min (método 1 e 20 min (Método 2 após a adição da solução de enzimas e o do pH estático (método 3, o qual mede o volume de NaOH adicionado, necessário para manter em 8,0 o valor de pH da solução de proteínas após a adição da solução enzimática. No método da queda de pH, as melhores equações foram obtidas com os valores de pH obtidos após 10 min da solução de enzimas. Dessas equações, as que tiveram maiores valores de R2 foram confeccionadas sem a presença de caseína. No método do pH estático as equações que permitiram melhor correlação entre volumes de NaOH com digestibilidade foram aquelas nas quais se usavam todas as fontes de proteína e aquela em que não estava presente a caseína. O uso de técnicas in vitro para a determinação da digestibilidade protéica traz uma série de benefícios, pois requer menos tempo, é mais barato e requisita de menos mão-de-obra e espaço físico.

  7. Estudos comparativos do léxico da fauna e flora Aruák

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    Ana Paula Brandão

    Full Text Available As línguas Apurinã, Piro e Iñapari, membros da família lingüística Aruák, são inicialmente comparadas com base nos dados utilizados na reconstrução de Payne (1991, e nas correspondências fonológicas apresentadas em Facundes (2000, 2002. A partir das evidências de agrupamento dessas três línguas, cognatos especificamente relacionados à fauna e flora Aruák são estabelecidos. Utilizando-se dos resultados encontrados na comparação, três questões são examinadas: o que as retenções lexicais indicam sobre o lugar dessas línguas dentro da família Aruák? Com base nos cognatos identificados, quais conceitos da flora e fauna provavelmente podem ser reconstruídos para estágios anteriores no desenvolvimento dessas três línguas a partir de uma língua ancestral? E, finalmente, quais inferências podem ser feitas sobre o passado desses povos com base na semântica da fauna e flora reconstruída?

  8. Viabilidade econômica da implantação de uma unidade de abate e processamento de suínos = Economic feasibility of installing a hog slaughter and processing facility

    Directory of Open Access Journals (Sweden)

    Leonardo Feron Bisognin

    2015-01-01

    Full Text Available Tradicionalmente as famílias da região Centro-Serra do estado do Rio Grande do Sul criam suínos (Sus scrofa domesticus como fonte de subsistência, porém nesta região estão inseridas apenas algumas pequenas agroindústrias de abate e processamento de carne suína. Uma destas agroindústrias possui certificação para comercialização apenas em território municipal, no entanto devido ao interesse na ampliação do negócio para o território estadual, é necessária a construção de uma nova planta industrial. Deste modo, com o objetivo de analisar a viabilidade econômica da implantação de uma nova unidade industrial nesta região, foi utilizado um questionário de campo e pesquisas de mercado, além de análises do orçamento de infraestrutura para o levantamento dos custos de implantação de uma nova unidade. Os dados obtidos foram lançados em um fluxo de caixa com prazo de dez anos na intenção de avaliar a viabilidade econômica. Foram utilizados os indicadores Taxa Interna de Retorno – TIR, Valor Presente Líquido – VPL, e o tempo de retorno do capital investido – Payback, como forma de analisar o investimento. A análise econômica resultou em uma TIR de 22%, VPL de R$ 271.099,67 para uma taxa de atratividade de 10 %, e Payback de três anos e onze meses. Com esses resultados positivos, do ponto de vista econômico, a implantação de uma nova unidade de abate e processamento de suínos para a referida região apresenta-se como um investimento altamente atrativo. = Despite families of the Centro-Serra of Rio Grande do Sul traditionally raises hogs as a source of living, there are some small slaughters and pork processing facilities in this region. One of these agro industries has certification for marketing in municipality. Due the interest in expanding the business all over the state, it is necessary to build a new industrial plant. In this context, the present study aims to analyze the economic feasibility of

  9. Pequeños empresarios mexicanos y canadienses; un estudio comparativo en cuanto a su orientación emprendedora

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    María Teresa de la Garza Carranza

    2013-01-01

    Full Text Available El proyecto de investigación muestra los resultados comparativos con respecto a la orient a ción emprendedor a de 140 empresarios mexicanos y 125 empresarios canadienses de pequeñas empresas. Los resultados demuestran que no hay diferencias significativas entre los par á metros de innovación y pro actividad y que existen diferencias significativas ligeras en cuanto a toma de riesgos. Aunque Canadá y México son países divididos espacialmente por Estados Unidos y tienen diferencias culturales importantes, han encontrado grandes puntos de coinc i dencia donde se han realizado acuerdos de colaboración. Se con cluye que no existe una gran diferencia entre la orientación emprendedora de los empresarios de ambos países y que será necesario investigar en los entornos económicos particulares , los detonantes del fenómeno de creación de empresas.

  10. El bienestar subjetivo en la adolescencia: estudio comparativo de dos Comunidades Autónomas en España

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    Ferran Casas

    2013-01-01

    Full Text Available Se analiza la comparabilidad interlingüística e intercultural del bienestar subjetivo durante la adolescencia, a partir de dos muestras de Asturias y de Cataluña de entre 15 y 18 años. Se utilizan como indicadores psicosociales de bienestar tres escalas: La SWLS de Diener, Emmons, Larsen y Smith (1985, escala libre de contexto (context free, el PWI de Cummins, Eckersley, van Pallant, Vugt y Misajon (2003, que evalúa el bienestar personal por ámbitos, y una escala de ítem único sobre satisfacción global con la vida (Overall Life Satisfaction = OLS. Utilizando modelos de Análisis Factorial Confirmatorio, el PWI muestra un buen ajuste para ambas muestras, avalando la comparabilidad de los resultados entre ambas poblaciones. Sus puntuaciones globales resultan más altas entre los adolescentes asturianos que entre los catalanes, igual que la OLS. La SWLS muestra un mal ajuste con los términos constantes restringidos, que añadido al hecho que el alpha de Cronbach aumentaría si el ítem 5 fuera suprimido, abunda en la idea que esta escala funciona de manera distinta en contextos socio-culturales diferentes y mantiene abiertas las dudas sobre si es apropiada su utilización como instrumento comparativo entre poblaciones de características lingüísticas y/o socioculturales distintas.

  11. Análisis comparativo de la calidad del acero de refuerzo distribuido en Boyacá

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    Jimmy Vergara Silva, Óscar Javier Gutiérrez Junco

    2011-05-01

    Full Text Available Presenta  los  resultados  del  análisis  comparativo  de barras de acero de refuerzo, según las exigencias de la Norma Técnica Colombiana NTC 2289 [1], realizado a cinco marcas diferentes distribuidas para la industria de  la  construcción  en  Boyacá.  Inicialmente  se caracterizaron  las barras de  acero mediante  ensayos, para  determinar  su  composición  química  y  sus propiedades físicas y mecánicas; las características de la fractura del acero de refuerzo se observaron con el microscopio  electrónico  de  barrido  (MEB. Adicionalmente,  se  analizaron  muestras  conmicroscopio óptico, con  técnicas de espectrometría paraobservar y determinar las características del metal base de  las probetas. Los resultados  indican que la calidad del acero de refuerzo distribuido en Boyacá cumple en un alto  porcentaje con las exigencias sismo-resistentes para construcción; sin embargo, es importante que los constructores realicen control de calidad.

  12. Condiciones de la gestión del conocimiento que favorecen el aprendizaje organizacional: un estudio comparativo

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    Julio César Acosta Prado

    2012-12-01

    Full Text Available Este estudio tiene como propósito identificar las condiciones facilitadoras de la gestión del conocimiento que favorecen el aprendizaje organizacional, y que a su vez inciden en los resultados de la gestión. Además se propone un modelo general de análisis, contrastado a partir de un análisis comparativo de carácter exploratorio de una muestra de 1.251 empresas con más de 100 empleados, en 33 países. La técnica de análisis para el tratamiento de los datos fue mediante un análisis factorial, tanto exploratorio como confirmatorio, para identificar las condiciones de la gestión del conocimiento que inciden sobre el aprendizaje, y después se realizó un análisis de conglomerados para contrastar la relación antes señalada con los resultados de la gestión. El análisis de conglomerados permitió conocer las valoraciones de los encuestados por países, a fin de identificar la homogeneidad en cada grupo y la mayor diferencia entre los grupos. Finalmente, los resultados obtenidos muestran la comprobación de hipótesis derivadas de la revisión de la literatura y del modelo de relaciones propuesto.

  13. Understanding selected trace elements behavior in a coal-fired power plant in Malaysia for assessment of abatement technologies.

    Science.gov (United States)

    Mokhtar, Mutahharah M; Taib, Rozainee M; Hassim, Mimi H

    2014-08-01

    The Proposed New Environmental Quality (Clean Air) Regulation 201X (Draft), which replaces the Malaysia Environmental Quality (Clean Air) 1978, specifies limits to additional pollutants from power generation using fossil fuel. The new pollutants include Hg, HCl, and HF with limits of 0.03, 100, and 15 mg/N-m3 at 6% O2, respectively. These pollutants are normally present in very small concentrations (known as trace elements [TEs]), and hence are often neglected in environmental air quality monitoring in Malaysia. Following the enactment of the new regulation, it is now imperative to understand the TEs behavior and to assess the capability of the existing abatement technologies to comply with the new emission limits. This paper presents the comparison of TEs behavior of the most volatile (Hg, Cl, F) and less volatile (As, Be, Cd, Cr, Ni, Se, Pb) elements in subbituminous and bituminous coal and coal combustion products (CCP) (i.e., fly ash and bottom ash) from separate firing of subbituminous and bituminous coal in a coal-fired power plant in Malaysia. The effect of air pollution control devices configuration in removal of TEs was also investigated to evaluate the effectiveness of abatement technologies used in the plant. This study showed that subbituminous and bituminous coals and their CCPs have different TEs behavior. It is speculated that ash content could be a factor for such diverse behavior In addition, the type of coal and the concentrations of TEs in feed coal were to some extent influenced by the emission of TEs in flue gas. The electrostatic precipitator (ESP) and seawater flue gas desulfurization (FGD) used in the studied coal-fired power plant were found effective in removing TEs in particulate and vapor form, respectively, as well as complying with the new specified emission limits. Implications: Coals used by power plants in Peninsular Malaysia come from the same supplier (Tenaga Nasional Berhad Fuel Services), which is a subsidiary of the Malaysia

  14. Parametri za procena na kvalitetot na polietilenska i na polipropilenska ambalaza i na gumeni zatvoraci nameneti za farmacevtski preparati

    Directory of Open Access Journals (Sweden)

    Liljana Ugrinova

    2002-03-01

    Full Text Available Napraven e pregled na parametrite za procena na kvalitetot na polietilenska i na polipropilenska ambalaza i na gumeni zatvoraci nameneti za farmacevtski preparati. Za procena na kvalitetot na ispituvaniot materijal bea izvrseni fizicki, hemiski i bioloski ispituvanja spored postapkite dadeni vo Ph. Eur., DIN i spored DIN ISO standardite. Baranjata za kvalitet na ovoj vid ambalaza propisani spored Ph. Eur., DIN i DIN ISO standardite se razlikuvaat vo odnos na predvidenite parametri za fizicki, za hemiski i za bioloski ispituvanja. Isto taka, propisani se i razlicni granici na dozvoleno otstapuvanje na oddelni parametri.

  15. Estudo comparativo entre audiometria tonal limiar e resposta auditiva de estado estavel em normouvintes

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    Roberto Miquelino de Oliveira Beck

    2014-01-01

    Full Text Available Introdução: As respostas auditivas de estado estável permitem avaliar de forma objetiva limiares auditivos frequência-específica. A audiometria tonal é o exame padrão-ouro; no entanto, nem sempre pode ser conclusiva, principalmente em crianças e adultos não colaborativos. Objetivo: Comparar os limiares auditivos da RAEE aos da audiometria tonal em indivíduos com audição normal. Materiais e métodos: Foram incluídos neste estudo prospectivo de corte transversal 26 adultos (52 orelhas, de ambos os gêneros, com audiometria normal e sem queixas otológicas. Os pacientes foram submetidos a anamnese, otomicroscopia, audiometria e imitanciometria. A seguir, realizou-se avaliação de respostas auditivas de estado estável. Os resultados obtidos foram analisados estatisticamente e comparados entre si. Resultados: A diferença entre os limiares (em dB NA obtidos em ambos os exames para cada frequência testada foi de 7,12 dB para 500 Hz; 7,6 dB para 1000 Hz; 8,27 dB para 2000 Hz e 9,71 dB para 4000 Hz, com limiares mais elevados na RAEE, em todas as frequências. Não houve diferença estatística entre as médias para cada frequência testada. Conclusão: Os limiares obtidos na RAEE foram comparáveis aos da audiometria tonal em indivíduos normouvintes; entretanto, não deve ser usado como único método de avaliação auditiva.

  16. O oraloma da diabetes melitos tipo 1 vs diabetes melitos tipo 2 - um estudo comparativo

    OpenAIRE

    Brás, Vítor Daniel Moreira

    2013-01-01

    A Diabetes Melitos é uma doença de grande prevalência a nível mundial e os seus mecanismos fisiopatológicos não são ainda totalmente conhecidos. Actualmente, a terapêutica seguida em casos de Diabetes Melitos é eminentemente sintomática consistindo na administração de insulina nos casos de Diabetes Melitos tipo 1 ou quando se verifica a falência das células beta do pâncreas de pacientes com Diabetes Melitos tipo 2, ou no controlo da glicemia nos casos de Diabetes Melitos ...

  17. Estudio comparativo de los modelos de calidad y marcos de referencia a fin de obtener atributos de calidad dirigidos a cada etapa de ciclo de vida del software

    OpenAIRE

    Calle Hinojosa, Paola Valeria

    2009-01-01

    La presente investigación, Estudio comparativo de modelos, estándares y marcos de referencia a fin de obtener atributos de calidad dirigidos a cada etapa del ciclo de vida del software, se enfocó en la comparación y análisis entre el modelo CMMI, el estándar 12207, el estándar 90003 y el marco de referencia COBIT, estudiando a detalle los procesos de la ingeniería del software, con el objetivo principal de obtener el listado de atributos de calidad a nivel del proceso. La investigación real...

  18. Modelos para el análisis comparativo de herramientas de software: Una revisión sistemática de la literatura

    OpenAIRE

    Romero de Souza Ferreyra, Yanire

    2017-01-01

    El análisis comparativo es el proceso mediante el cual se analiza el uso de determinadas herramientas de software bajo criterios de evaluación con la finalidad de determinar cuál es la más adecuada para el contexto seleccionado. Dicho análisis requiere modelos y sus elementos (procedimientos, prácticas, técnicas y herramientas, entre otros) bajo los cuales debe ser llevado a cabo para obtener los mejores resultados sobre el objeto de estudio. (OBJETIVOS) En este estudi...

  19. Ventilação de urgencia : estudo comparativo do mecanismo manual de ventilação artificial do tipo sistema balão-valvula-mascara

    OpenAIRE

    Luiz Claudio Candido

    1992-01-01

    Resumo: Foi realizado um estudo comparativo em manequim registrador do mecanismo manual de ventilacão artificial do tipo sistema balão-válvula-máscara, utilizando seis sistemas disponiveis no Brasil e no exterior. A comparacão ocorreu atraves do volume ventilatório médio final (ml) obtido em cada procedimento, com o volume ventilatório minimo ideal de ar preconizado, no valor de 800 ml, para adu Itos, segundo American Heart Association, em manobras praticadas por um ou dois rean i m.adores (...

  20. El concepto del tiempo en el pesamiento de Josep Soler y Bernd Alois Zimmermann. Estudio comparativo de las óperas Edipo y Yocasta y Diesoldaten

    OpenAIRE

    Sánchez de Andrés, Leticia; Candidata al Doctorado en Historia y Ciencias de la Música, Facultad de Geografía e Historia, Universidad Complutense de Madrid, España

    2005-01-01

    En el presente estudio escrutaremos el concepto del tiempo en el pensamiento musical de Josep Soler y de Bernd Alois Zimmermann, dos compositores que comparten influencias y elementos comunes dentro de su filosofía y para los que dicho aspecto constituye una parte fundamental de su estética. Desarrollaremos además un análisis musicológico comparativo de sus dos obras señeras, las óperas Edipo y Yocasta (1971) de Soler y su contemporánea Die Soldaten (1965) de Zimmermann. Este trabajo integra ...

  1. Investigación en Progreso: Estudio Comparativo de la Incidencia de los Lenguajes de Programación en la Productividad Informática

    Directory of Open Access Journals (Sweden)

    Mauricio R. Dávila

    2017-01-01

    Full Text Available En la actualidad existe una gran diversidad de lenguajes de programación y a menudo esto dificulta la tarea de seleccionar el lenguaje adecuado para desarrollar una solución determinada. Este estudio se centrara en analizar uno de los factores que afecta la productividad, el referido al lenguaje de programación, siendo el objetivo de la investigación elaborar un procedimiento que permita realizar estudios comparativos sobre la incidencia de los lenguajes de programación en la productividad informática.

  2. Investigación en Progreso: Estudio Comparativo de la Incidencia de los Lenguajes de Programación en la Productividad Informática

    OpenAIRE

    Mauricio R. Dávila

    2017-01-01

    En la actualidad existe una gran diversidad de lenguajes de programación y a menudo esto dificulta la tarea de seleccionar el lenguaje adecuado para desarrollar una solución determinada. Este estudio se centrara en analizar uno de los factores que afecta la productividad, el referido al lenguaje de programación, siendo el objetivo de la investigación elaborar un procedimiento que permita realizar estudios comparativos sobre la incidencia de los lenguajes de programación en la productividad in...

  3. Análisis comparativo del uso de Ictalurus punctatus (Rafinesque, 1818) y Cyprinus carpio (Linnaeus, 1758) en la elaboración de hamburguesas

    OpenAIRE

    Cerón-Ortiz, Ana Nallely; Castillo-Martínez, Elías; Ángeles-Monroy, Miguel Ángel

    2016-01-01

    Resumen: El estudio realizó un análisis comparativo de la utilización de la carne de bagre (I. punctatus) y carpa (C. carpio) para la elaboración de hamburguesas, considerando el impacto de la especie en la factibilidad de manufactura, la aceptación organoléptica, el valor nutricional, el contenido de microorganismos y el costo de las mismas. Los resultados indican que el grado de frescura de la carne y la inocuidad del proceso evitaron la presencia de microorganismos patógenos en el producto...

  4. Teatro y traducción (inglés-español). Análisis comparativo de traducciones comerciales. Who's Afraid of Virginia Woolf?

    OpenAIRE

    Andaluz Pinedo, Olaia

    2015-01-01

    El presente trabajo se centra en un análisis comparativo en varios niveles de las traducciones producidas a partir de la obra teatral Who’s Afraid of Virginia Woolf? (Albee 1962): las de Marcelo De Ridder, José Méndez y Alberto Mira, realizadas con distintos fines y en momentos histórico culturales diferenciados. Asimismo hemos integrado en la comparación la adaptación cinematográfica y los correspondientes textos audiovisuales en inglés y en español, con el fin de ofrecer una visión más incl...

  5. FACTORES PROTECTORES DE LA SALUD MENTAL: UN ESTUDIO COMPARATIVO SOBRE VALORES, AUTOESTIMA E INTELIGENCIA EMOCIONAL EN POBLACIÓN CLÍNICA Y POBLACIÓN GENERAL

    OpenAIRE

    VANESA C. GÓNGORA; MARÍA MARTINA CASULLO

    2009-01-01

    El objetivo del trabajo que se informa fue realizar un estudio comparativo de tres factores protectores de la salud mental: inteligencia emocional, valores y autoestima entre 60 pacientes diagnosticados con trastornos de ansiedad y/o depresión y 60 sujetos de población normal. Así la muestra total quedó conformada por 120 sujetos. Los instrumentos utilizados fueron: la Escala de Valores de Schwartz (1992), la Escala de Inteligencia Emocional Bar-On (1997), la Escala de Autoestima de Rosenberg...

  6. PROCESO DE MEJORA EN EL RECLUTAMIENTO Y SELECCIÓN DE PERSONAL DE LA POLICÍA DE MÉXICO Y COLOMBIA: UN ESTUDIO COMPARATIVO

    OpenAIRE

    Castañeda Sopo, Erwin Ernesto

    2015-01-01

    En la presente investigación, se abordan los procesos de reclutamiento y selección de la policía de México y Colombia; un estudio comparativo, que permite observar desde el inicio de actividades tan sencillas pero a la vez tan complejas dentro de la Administración de personal, que cualquier tipo de organización pública o privada, puede adelantarse y prever el éxito o el fracaso de la misma, si no se tienen reglas claras al respecto. En la actualidad en México no existe un proceso de reclut...

  7. ESTUDIO COMPARATIVO SOBRE COMPETENCIAS GENERICAS EN MODALIDAD PRESENCIAL Y VIRTUAL EN UN CURSO DE PREGRADO DE LA UNIVERSIDAD TECNOLÓGICA DE PANAMÁ

    OpenAIRE

    Rodrigo Durán Rodríguez; Christian Estay-Niculcar

    2012-01-01

    El presente artículo describe el estudio comparativo entre modalidades presencial y virtual de dieciocho competencias genéricas del modelo de competencias Alfa Tuning de Latinoamérica. El estudio se realizó con estudiantes de Licenciatura en Redes y Comunicaciones de la Universidad Tecnológica de Panamá, quienes participaron en un proceso de investigación que los involucraba a prácticas presenciales y a prácticas virtuales. Los resultados revelaron las diferencias existentes al momento de imp...

  8. Análisis comparativo de la estructura del canto del anuncio de tres poblaciones de Melanophryniscus rubriventris (Vellar, 1947) (Anura: Bufonidae)

    OpenAIRE

    Ferrari, Liliana; Vaira, Marcos

    2008-01-01

    La estructura de la señal acústica en anuros ha sido considerada especie-específica y utilizada incluso para el reconocimiento de nuevas especies indistinguibles por caracteres morfológicos. En este trabajo, presentamos una descripción de la estructura del canto de Melanophryniscus rubriventris y un análisis comparativo de parámetros espectrales y temporales del canto de anuncio en tres poblaciones argentinas, cada una de ellas asignadas a una de las tres subespecies tradicionalmente reconoci...

  9. Análisis comparativo de la estructura del canto del anuncio de tres poblaciones de Melanophryniscus rubriventris (Vellar, 1947) (Anura: Bufonidae)

    OpenAIRE

    Vaira, Marcos; Ferrari, Liliana

    2008-01-01

    La estructura de la señal acústica en anuros ha sido considerada especie-específica y utilizada incluso para el reconocimiento de nuevas especies indistinguibles por caracteres morfológicos. En este trabajo, presentamos una descripción de la estructura del canto de Melanophryniscus rubriventris y un análisis comparativo de parámetros espectrales y temporales del canto de anuncio en tres poblaciones argentinas, cada una de ellas asignadas a una de las tres subespecies tradicionalmente reconoci...

  10. Estudio comparativo de las teorías de desarrollo cognitivo de Piaget y Flavell en niños preescolares

    OpenAIRE

    Saquicela Novillo, Claudia Elisa

    2010-01-01

    La tesis es un análisis comparativo y contraposición entre la teoría de Piaget con la teoría de Flavell sobre el desarrollo cognitivo en niños preescolares para comprender teóricamente tanto las ideas de Piaget como aquello propuesto por Flavell, en cuanto a cuatro categorías conceptuales: etapas de desarrollo cognitivo, génesis del pensamiento, mecanismos y estrategias de desarrollo cognitivo. Luego se presentan algunas implicaciones y directrices educativas que se han desprendido deputes...

  11. Estudio comparativo del comportamiento de losas de concreto reforzado mediante los análisis elástico y límite

    Directory of Open Access Journals (Sweden)

    Julio Vergara García

    1989-01-01

    Full Text Available Presenta un resumen de la tesis de grado "Estudio comparativo de losas de concreto reforzado mediante los análisis elástico y límite". Este trabajo proporciona fórmulas, tablas y gráficas prácticas para determinar los momentos flectores y el volumen de refuerzo de los tipos de losas estudiados, sometidas a diferentes tipos de carga y analizados mediante la Teoría de la Elasticidad y el Análisis Límite.

  12. Migración y selectividad : estudio comparativo de zonas metropolitanas de gran atracción migratoria : Puerto Vallarta y Tijuana

    OpenAIRE

    Serna Enciso, Teresita de Jesús

    2008-01-01

    La localización de ciertos asentamientos humanos en lugares geográficos especiales como las fronteras territoriales y las costas marítimas, ha convertido a diversos poblados en grandes polos de atracción económica y migratoria. En este trabajo de investigación se muestra un estudio descriptivo y comparativo de la migración reciente hacia dos polos de gran atracción: la zona metropolitana de Puerto Vallarta y la zona metropolitana de Tijuana. De manera muy particular, se presenta el análisis d...

  13. ANÁLISIS DE LA ESTACIONALIDAD EN EL SECTOR CINEMATOGRÁFICO: ESTUDIO COMPARATIVO ENTRE LA INDUSTRIA EXTRANJERA Y ESPAÑOLA

    Directory of Open Access Journals (Sweden)

    Vila Oblitas, José Roberto

    2012-05-01

    Full Text Available Con la finalidad de analizar la estacionalidad del cine español frente al americano, se realiza un análisis comparativo entre variables tales como fechas de estreno en cine, evolución del número de espectadores, tendencia de las series y estudio de la estacionalidad en ambos grupos. Los resultados muestran que, en el caso de las películas españolas, la estacionalidad es mucho mayor y además los estrenos se concentran en épocas que no coinciden con los periodos de mayor ocio de los espectadores.

  14. Estudio comparativo de los procesos de soldadura smaw y gmaw en las uniones de tuberías de transporte de combustible

    OpenAIRE

    Rivadeneyra Camino, Antonio; Serrano, Omar

    2009-01-01

    El sistema de transporte de combustible se realiza mediante sistemas de tuberías. Las uniones de los tubos se realiza por medio de proceso de soldadura SMAW o también llamado de electrodo revestido. Un proceso más rápido y que tiene mejor rendimiento en sus materiales consumibles es el proceso de soldadura GMAW o de electrodo desnudo con gas protector. Se realiza un estudio comparativo en todos los aspectos, como dilución, inspección visual, inspección radiográfica, ensayos y pruebas mecá...

  15. Analisis comparativo de la recaudacion fiscal por el impuesto a la renta de personas naturales no obligadas a llevar contabilidad. Periodos 2008-2010

    OpenAIRE

    Garces Rosales, Janett; Merchan Quinde, Tahina

    2011-01-01

    El presente trabajo es un estudio que permitirá conocer la realidad sobre la recaudación de Impuestos Fiscales de las personas naturales no obligadas a llevar contabilidad. El problema se centra en el análisis comparativo de la recaudación fiscal en los períodos 2008 al 2010, en donde se realizaron modificaciones en la ley tributaria que están incidiendo en la presentación de las declaraciones y por ende en su recaudación anual. Este estudio se apoyará en la investigación histórica documenta...

  16. Just in time. Goals and key elements of the German air pollution abatement programme; Just in time. Ziele und Eckpfeiler des Klimaschutzprogramms

    Energy Technology Data Exchange (ETDEWEB)

    Schafhausen, F.

    2001-03-01

    After prolonged discussions, the German government agreed on a new, 421 page, air pollution abatement programme on 18 October 2000. Funds will be provided from the sales of the UMTS licences. [German] Nach zaehen Verhandlungen innerhalb der Bundesregierung und den finanziellen Moeglichkeiten, die sich aus der Versteigerung der UMTS-Lizenzen voellig unerwartet ergaben, hat das Kabinett am 18. Oktober 2000 dem neuen - 421 Seiten starken - Klimaschutzprogramm zugestimmt. (orig.)

  17. Critérios de correção da linguagem: o uso do Libro dell’Abate Isaac di Siria no Vocabolario degli Accademici della Crusca

    Directory of Open Access Journals (Sweden)

    Cynthia Vilaça

    2015-12-01

    Full Text Available In this paper, we present an analysis of the use of the ascetic treatise Libro dell’Abate Isaac of Syria by academicians of the Crusca as a source of accreditations for the preparation of the Vocabolario degli Accademici della Crusca, noted Italian lexicographical work, in light of the criteria used for the construction of the educated norm discussed by Bechara (2000

  18. An assessment of household electricity load curves and corresponding CO2 marginal abatement cost curves for Gujarat state, India

    International Nuclear Information System (INIS)

    Garg, Amit; Shukla, P.R.; Maheshwari, Jyoti; Upadhyay, Jigeesha

    2014-01-01

    Gujarat, a large industrialized state in India, consumed 67 TWh of electricity in 2009–10, besides experiencing a 4.5% demand–supply short-fall. Residential sector accounted for 15% of the total electricity consumption. We conducted load research survey across 21 cities and towns of the state to estimate residential electricity load curves, share of appliances by type and usage patterns for all types of household appliances at utility, geographic, appliance, income and end-use levels. The results indicate that a large scope exists for penetration of energy efficient devices in residential sector. Marginal Abatement Cost (MAC) curves for electricity and CO 2 were generated to analyze relative attractiveness of energy efficient appliance options. Results indicate that up to 7.9 TWh of electricity can be saved per year with 6.7 Mt-CO 2 emissions mitigation at negative or very low CO 2 prices of US$ 10/t-CO 2 . Despite such options existing, their penetration is not realized due to myriad barriers such as financial, institutional or awareness and therefore cannot be taken as baseline options for CO 2 emission mitigation regimes. - Highlights: • Residential sector provides focused mitigation opportunities. • Energy efficient space cooling is the main technology transition required. • Almost 26% residential load could be reduced by DSM measures. • Myriad barriers limit penetration of negative marginal cost efficient options

  19. Noise abatement and traffic safety: The trade-off of quieter engines and pavements on vehicle detection.

    Science.gov (United States)

    Mendonça, C; Freitas, E; Ferreira, J P; Raimundo, I D; Santos, J A

    2013-03-01

    Road traffic sounds are a major source of noise pollution in urban areas. But recent developments such as low noise pavements and hybrid/electric engine vehicles cast an optimistic outlook over such an environmental problem. However, it can be argued that engine, tire, and road noise could be relevant sources of information to avoid road traffic conflicts and accidents. In this paper, we analyze the potential trade-offs of traffic-noise abatement approaches in an experimental study, focusing for the first time on the impact and interaction of relevant factors such as pavement type, vehicle type, listener's age, and background noise, on vehicle detection levels. Results reveal that vehicle and pavement type significantly affect vehicle detection. Age is a significant factor, as both younger and older people exhibit lower detection levels of incoming vehicles. Low noise pavements combined with all-electric and hybrid vehicles might pose a severe threat to the safety of vulnerable road users. All factors interact simultaneously, and vehicle detection is best predicted by the loudness signal-to-noise ratio. Copyright © 2012 Elsevier Ltd. All rights reserved.

  20. Abatement of Cr (Ⅵ) from wastewater using a new adsorbent, cantaloupe peel: Taguchi L{sub 16} orthogonal array optimization

    Energy Technology Data Exchange (ETDEWEB)

    Ramavandi, Bahman [Bushehr University of Medical Sciences, Bushehr (Iran, Islamic Republic of); Asgari, Ghorban; Faradmal, Javad [Hamadan University of Medical Sciences, Hamadan (Iran, Islamic Republic of); Sahebi, Soleyman [University of Technology, Sydney (UTS), Sydney (Australia); Roshani, Babak [DelcoWater, Saskatoon (Canada)

    2014-12-15

    Taguchi orthogonal design was applied for multivariate optimization of Cr (Ⅵ) abatement by cantaloupe peel powder (CPP), as a novel adsorbent, from industrial wastewater in a batch mode. Effective factors in the adsorption process, such as temperature, CPP dose, Cr (Ⅵ) concentration, wastewater pH, and contact time, were considered using an L{sub 16} orthogonal array design. The best conditions for adsorbing of Cr (Ⅵ) were determined by the Taguchi method and desirability approach as pH of 2, chromium concentration of 100mg/L, contact time of 5min, CPP dosage of 0.5 g/L, and wastewater temperature of 25 .deg. C. Analysis of variance results indicated that the pH was the most important variable influencing the chromium removal percentage, and its contribution value was obtained 45.01%. The Langmuir model proved best fit for the experimental data and maximum adsorption capacity of Cr (Ⅵ) onto CPP was obtained 166.25mg/g. The final part of the study includes an examination of the CPP through an analysis of the removal of chromium from real industrial wastewater. It can be concluded that the CPP presents a promising and efficient alternative for eliminating of Cr (Ⅵ) from industrial wastewaters.

  1. Carbon abatement potential of solar home systems in India and their cost reduction due to carbon finance

    International Nuclear Information System (INIS)

    Chaurey, A.; Kandpal, T.C.

    2009-01-01

    About 78 million rural households in India reportedly lack access to grid electricity. About 67 million of them use kerosene for lighting. Government of India is promoting the use of solar home systems (SHS) as one of the options for meeting lighting requirements in households in remote and less inhabited villages. About 363,399 SHS were reportedly disseminated across the country by December 2007. Apart from meeting the basic lighting need of the households, SHS also help in abating the emissions of green house gases (GHGs) by directly displacing the use of kerosene in households that currently use it for lighting. This study has attempted at estimating the CO 2 mitigation potential of SHS in India by studying the potential for their diffusion and the appropriate baseline. Subsequently, the scope for cost reduction to the user due to carbon finance, if received, is also studied. It is found that carbon finance could reduce the effective burden of SHS to the user by 19% if carbon prices were $10/tCO 2 and no transaction costs were involved in getting the carbon revenues. These benefits are also estimated for scenarios where transaction costs are incurred by the project proponent in getting the carbon benefits

  2. First report on the Oak Ridge K-25 Site Biological Monitoring and Abatement Program for Mitchell Branch

    International Nuclear Information System (INIS)

    Smith, J.G.; Adams, S.M.; Kszos, L.A.; Ryon, M.G.; Southworth, G.R.; Loar, J.M.

    1993-08-01

    A modified National Pollutant Discharge Elimination System permit was issued to the Oak Ridge Gaseous Diffusion Plant (now referred to as the Oak Ridge K-25 Site) on September 11, 1986. The Oak Ridge K-25 Site is a former uranium-enrichment production facility, which is currently managed by Martin Marietta Energy Systems, Inc. for the US Department of Energy. As required in Part III (L) of that permit, a plan for the biological monitoring of Mitchell Branch (K-1700 stream) was prepared and submitted for approval to the US Environmental Protection Agency and the Tennessee Department of Environment and Conservation [formerly the Tennessee Department of Health and Environment (Loar et al. 1992b)]. The K-25 Site Biological Monitoring and Abatement Program (BMAP) described biomonitoring activities that would be conducted over the duration of the permit. Because it was anticipated that the composition of existing effluent streams entering Mitchell Branch would be altered shortly after the modified permit was issued, sampling of the benthic invertebrate and fish communities (Task 4 of BMAP) was initiated in August and September 1986 respectively

  3. Second report on the Oak Ridge Y-12 Plant Biological Monitoring and Abatement Program for East Fork Poplar Creek

    Energy Technology Data Exchange (ETDEWEB)

    Hinzman, R.L. [ed.; Adams, S.M. [Oak Ridge National Lab., TN (United States); Black, M.C. [Oklahoma State Univ., Stillwater, OK (United States)] [and others

    1993-06-01

    As stipulated in the National Pollutant Discharge Elimination System (NDPES) permit issued to the Oak Ridge Y-12 Plant on May 24, 1986, a Biological Monitoring and Abatement Program (BMAP) was developed for the receiving stream, East Fork Poplar Creek (EFPC). The objectives of BMAP are (1) to demonstrate that the current effluent limitations established for the Y-12 Plant protect the classified uses of EFPC (e.g., the growth and propagation of fish and aquatic life), as designated by the Tennessee Department of Environment and Conservation (TDEC) and (2) to document the ecological effects resulting from implementation of a Water Pollution Control Program that includes construction of several large wastewater treatment facilities. BMAP consists of four major tasks: (1) ambient toxicity testing; (2) bioaccumulation studies; (3) biological indicator studies; and (4) ecological surveys of stream communities, including periphyton (attached algae), benthic (bottom-dwelling) macroinvertebrates, and fish. This document, the second in a series of reports on the results of the Y-12 Plant BMAP, describes studies that were conducted between July 1986 and July 1988, although additional data collected outside this time period are included, as appropriate.

  4. Korea's emission trading scheme and policy design issues to achieve market-efficiency and abatement targets

    International Nuclear Information System (INIS)

    Park, Hojeong; Hong, Won Kyung

    2014-01-01

    In 2008, the government of Republic of Korea (Korea) announced the national abatement target aiming at 30% reductions from the Business-as-Usual projections by 2020. Accordingly, the Emission Trading Scheme (ETS) will be implemented from 2015 onwards. As ETS performance substantially depends on the structural design, it is critically important to examine the details of Korean ETS for the achievement of cost effectiveness and concurrent development of an active emission trading market. This paper addresses several policy design issues for this purpose. After providing an overview on the current framework of Korean ETS, we propose ways to achieve flexibility, consistency and market efficiency of the program in consideration of the preexisting policies. Issues in policy design are discussed by focusing on allowance allocation, market stabilization measures and price mechanism in the emission and energy markets in Korea. This paper will serve as a practical guideline for establishing sustainable and market-efficient Korean ETS that can be compatible with the international standards as in the EU ETS. - Highlights: • Emission Trading Scheme (ETS) will be implemented from 2015 in Korea to reduce CO 2 . • ETS performance substantially depends on structural design. • We provide policy overview on the current framework of Korean ETS. • Several policy design issues are discussed for developing policy consistency. • We focus on allowance allocation, allowance reserve and market stabilization measures

  5. Carbon abatement via treating the solid waste from the Australian olive industry in mobile pyrolysis units: LCA with uncertainty analysis.

    Science.gov (United States)

    El Hanandeh, Ali

    2013-04-01

    The olive oil industry in Australia has been growing at a rapid rate over the past decade. It is forecast to continue growing due to the steady increase in demand for olive oil and olive products in the local and regional market. However, the olive oil extraction process generates large amounts of solid waste called olive husk which is currently underutilized. This paper uses life-cycle methodology to analyse the carbon emission reduction potential of utilizing olive husk as a feedstock in a mobile pyrolysis unit. Four scenarios, based on different combinations of pyrolysis technologies (slow versus fast) and end-use of products (land application versus energy utilization), are constructed. The performance of each scenario under conditions of uncertainty was also investigated. The results show that all scenarios result in significant carbon emission abatement. Processing olive husk in mobile fast pyrolysis units and the utilization of bio-oil and biochar as substitutes for heavy fuel oil and coal is likely to realize a carbon offset greater than 32.3 Gg CO2-eq annually in 90% of the time. Likewise, more than 3.2 Gg-C (11.8 Gg CO2-eq) per year could be sequestered in the soil in the form of fixed carbon if slow mobile pyrolysis units were used to produce biochar.

  6. Second report on the Oak Ridge Y-12 Plant Biological Monitoring and Abatement Program for East Fork Poplar Creek

    International Nuclear Information System (INIS)

    Hinzman, R.L.; Black, M.C.

    1993-06-01

    As stipulated in the National Pollutant Discharge Elimination System (NDPES) permit issued to the Oak Ridge Y-12 Plant on May 24, 1986, a Biological Monitoring and Abatement Program (BMAP) was developed for the receiving stream, East Fork Poplar Creek (EFPC). The objectives of BMAP are (1) to demonstrate that the current effluent limitations established for the Y-12 Plant protect the classified uses of EFPC (e.g., the growth and propagation of fish and aquatic life), as designated by the Tennessee Department of Environment and Conservation (TDEC) and (2) to document the ecological effects resulting from implementation of a Water Pollution Control Program that includes construction of several large wastewater treatment facilities. BMAP consists of four major tasks: (1) ambient toxicity testing; (2) bioaccumulation studies; (3) biological indicator studies; and (4) ecological surveys of stream communities, including periphyton (attached algae), benthic (bottom-dwelling) macroinvertebrates, and fish. This document, the second in a series of reports on the results of the Y-12 Plant BMAP, describes studies that were conducted between July 1986 and July 1988, although additional data collected outside this time period are included, as appropriate

  7. Conduction-driven cooling of LED-based automotive LED lighting systems for abating local hot spots

    Science.gov (United States)

    Saati, Ferina; Arik, Mehmet

    2018-02-01

    Light-emitting diode (LED)-based automotive lighting systems pose unique challenges, such as dual-side packaging (front side for LEDs and back side for driver electronics circuit), size, harsh ambient, and cooling. Packaging for automotive lighting applications combining the advanced printed circuit board (PCB) technology with a multifunctional LED-based board is investigated with a focus on the effect of thermal conduction-based cooling for hot spot abatement. A baseline study with a flame retardant 4 technology, commonly known as FR4 PCB, is first compared with a metal-core PCB technology, both experimentally and computationally. The double-sided advanced PCB that houses both electronics and LEDs is then investigated computationally and experimentally compared with the baseline FR4 PCB. Computational models are first developed with a commercial computational fluid dynamics software and are followed by an advanced PCB technology based on embedded heat pipes, which is computationally and experimentally studied. Then, attention is turned to studying different heat pipe orientations and heat pipe placements on the board. Results show that conventional FR4-based light engines experience local hot spots (ΔT>50°C) while advanced PCB technology based on heat pipes and thermal spreaders eliminates these local hot spots (ΔT<10°C), leading to a higher lumen extraction with improved reliability. Finally, possible design options are presented with embedded heat pipe structures that further improve the PCB performance.

  8. Practical ways to abate air and water pollution worldwide including a unique way to significantly curb global warming

    Energy Technology Data Exchange (ETDEWEB)

    Snell, J.R.

    1998-07-01

    This paper points out that in the next 50 years it will largely be the developing countries of the world which will continue to industrialize rapidly and hence pollute the water and air of not only their countries but that this pollution is becoming global (80% of the World's population.) From the author's 25 years of consulting experience in the developing countries, their greatest need is to have available to them low cost, innovative processes for pollution abatement will be neglected and the whole world will suffer immensely. The paper discusses in some detail the type of innovative low cost methods which have successfully been used in the categories of wastewater and solid wastes and names 6 other categories where many others exist. All these innovative methods need to be discovered, listed, and tested for quality and dependability, and then made widely available. Large Environmental Engineering Universities and International Consulting Engineering firms need to be organized to undertake these important tasks. The paper also points out the connection between Global Warming and the Solid waste industry and shows how it can be controlled inexpensively by employing a new, unique, and rapid method of converting municipal refuse into methane and then using that to make electricity. Information given in this paper could lead to a vast reduction in future pollution, with the resulting better global health and at the same time save trillions of dollars.

  9. When we don't know the costs or the benefits: adaptive strategies for abating climate change

    International Nuclear Information System (INIS)

    Lempert, R.J.; Schlesinger, M.E.; Bankes, S.C.

    1996-01-01

    Most quantitative studies of climate-change policy attempt to predict the greenhouse-gas reduction plan that will have the optimum balance of long-term costs and benefits. The authors find that the large uncertainties associated with the climate-change problem can make the policy prescriptions of this traditional approach unreliable. In this study the authors construct a large uncertainty space that includes the possibility of large and/or abrupt climate changes and/or of technology breakthroughs that radically reduce projected abatement costs. Computational experiments are used on a linked system of climate and economic models to compare the performance of a simple adaptive strategy - one that can make midcourse corrections based on observations of the climate and economic systems - and two commonly advocated 'best-estimate' policies based on different expectations about the long-term consequences of climate change. It was found that the 'Do-a-Little' and 'Emissions-Stabilization' best-estimate policies perform well in the respective regions of the uncertainty space where their estimates are valid, but can fail severely in those regions where their estimates are wrong. In contrast, the adaptive strategy can make midcourse corrections and avoid significant errors. While its success is no surprise, the adaptive-strategy approach provides an analytic framework to examine important policy and research issues that will likely arise as society adapts to climate change, which cannot be easily addressed in studies using best-estimate approaches. 44 refs., 15 figs., 3 tabs

  10. Evaluation of noise pollution in oil extracting region of Lavan and the effect of noise enclosure on noise abatement

    Directory of Open Access Journals (Sweden)

    F. Golbabaei

    2007-09-01

    Full Text Available Background and aims   Overexposure to industrial noise pollution induce hearing loss workers. Occupational hearing loss may cause interference whit oral communication, so it may  increase the risk of occupational accidents in workplace as well as affects whit social activities.  This study was conducted on Lavan Island, are of oil extracting regions in the south of Iran. The  object of this study was to evaluate noise pollution and determining the effect of noise enclosure  on noise abatement.   Methods   The noise sources were recognized and noise pressure level was measured by CEL- 440. Noise dose of the exposed workers in high level noise area were measured by CEL 272.   Results   Major noise sources were gas turbines, diesel generators, compressors, fans and gas containing pips, noise contour map revealers that noise level were higher than the recommended national exposure limit. The results of workers noise dose show that their noise exposure were  higher than the recommended value, (p<0.001. Finally, by using the results of noise frequency  analysis of different noise sources, the noise pressure level of each sources was determined in   terms of enclosing them.   Conclusion   By enclosing the noise sources, noise pressure levels can be lowered douse to  acceptable levels but limitation of applying enclosure should be regarded.  

  11. First report on the Oak Ridge K-25 Site Biological Monitoring and Abatement Program for Mitchell Branch

    Energy Technology Data Exchange (ETDEWEB)

    Smith, J.G. [ed.; Adams, S.M.; Kszos, L.A.; Ryon, M.G.; Southworth, G.R.; Loar, J.M.

    1993-08-01

    A modified National Pollutant Discharge Elimination System permit was issued to the Oak Ridge Gaseous Diffusion Plant (now referred to as the Oak Ridge K-25 Site) on September 11, 1986. The Oak Ridge K-25 Site is a former uranium-enrichment production facility, which is currently managed by Martin Marietta Energy Systems, Inc. for the US Department of Energy. As required in Part III (L) of that permit, a plan for the biological monitoring of Mitchell Branch (K-1700 stream) was prepared and submitted for approval to the US Environmental Protection Agency and the Tennessee Department of Environment and Conservation [formerly the Tennessee Department of Health and Environment (Loar et al. 1992b)]. The K-25 Site Biological Monitoring and Abatement Program (BMAP) described biomonitoring activities that would be conducted over the duration of the permit. Because it was anticipated that the composition of existing effluent streams entering Mitchell Branch would be altered shortly after the modified permit was issued, sampling of the benthic invertebrate and fish communities (Task 4 of BMAP) was initiated in August and September 1986 respectively.

  12. Broadening the Appeal of Marginal Abatement Cost Curves: Capturing Both Carbon Mitigation and Development Benefits of Clean Energy Technologies; Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Cowlin, S.; Cochran, J.; Cox, S.; Davison, C.; van der Gaast, Y.

    2012-08-01

    Low emission development strategies (LEDS) articulate policies and implementation plans that enable countries to advance sustainable, climate-resilient development and private sector growth while significantly reducing the greenhouse gas (GHG) emissions traditionally associated with economic growth. In creating a LEDS, policy makers often have access to information on abatement potential and costs for clean energy technologies, but there is a scarcity of economy-wide approaches for evaluating and presenting information on other dimensions of importance to development, such as human welfare, poverty alleviation, and energy security. To address this shortcoming, this paper proposes a new tool for communicating development benefits to policy makers as part of a LEDS process. The purpose of this tool is two-fold: 1. Communicate development benefits associated with each clean energy-related intervention; 2. Facilitate decision-making on which combination of interventions best contributes to development goals. To pilot this tool, the authors created a visual using data on developmental impacts identified through the Technology Needs Assessment (TNA) project in Montenegro. The visual will then be revised to reflect new data established through the TNA that provides information on cost, GHG mitigation, as well as the range and magnitude of developmental impacts.