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  1. Sobrepeso entre adolescentes de escolas particulares de Fortaleza, CE, Brasil Sobrepeso entre adolescentes de escuelas privadas de Fortaleza, CE, Brasil Overweight among adolescents from private schools in Fortaleza, CE, Brazil

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    Márcio Flávio Moura Araújo

    2010-08-01

    Full Text Available O objetivo da pesquisa foi identificar casos de excesso de peso em adolescentes de escolas particulares de Fortaleza - Brasil. Foram investigados 794 estudantes entre 12 e 17 anos de idade, de 12 escolas privadas, nos meses de março-junho e agosto-setembro de 2007. A prevalência de sobrepeso e obesidade foi, respectivamente, de 20% e 4%. O sobrepeso foi maior, e duplicado os casos de obesidade, naqueles que mantinham o hábito de assistir tevê durante as refeições (p= 0, 000. Cerca de 28% dos jovens ativos apresentavam excesso de peso (p El objetivo de la investigación fue identificar los casos de sobrepeso en adolescentes de escuelas privadas de Fortaleza-Brasil. Fueron investigados 794 estudiantes entre 12 y 17 años, de 12 escuelas privadas, en los meses de marzo-junio y agosto-septiembre de 2007. La prevalencia de sobrepeso y obsedidad fue de 20% y 4%, respectivamente. La acumulación de peso fue mayor y los casos de obesidad fue dos veces más, en los que tenían la costumbre de asistir a la tele al alimentarse (p= 0, 000. Sobre 28% de los jóvenes que practicaban actividad física regularmente presentaban sobrepeso (p The purpose of the study was to identify cases of overweight among adolescents in private schools in Fortaleza, Brazil. We investigated 794 students between 12 and 17 years old from 12 private schools, in the months March to June and August-September 2007. The prevalence of overweight and obesity was 20% and 4%, respectively. Among the young people who watch TV while eat, the weight accumulated was higher and the cases of obesity was the double (p = 0, 000. About 28% of people who practiced regular physical activity were overweight (p <0, 001. In the fight against adolescent adiposity, to the nursing is primarily the preventive actions, because attenuate various pathological effects related to the accumulation of body weight.

  2. Enfrentamento da AIDS entre mulheres infectadas em Fortaleza - CE Enfrentamento del SIDA entre mujeres infectadas en Fortaleza-CE How infected women in Fortaleza-CE cope with AIDS

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    Carolina Maria de Lima Carvalho

    2008-03-01

    Full Text Available Este estudo objetivou apreender como as mulheres com aids enfrentam o cotidiano após o conhecimento do seu diagnóstico. Trata-se de estudo exploratório, descritivo, com abordagem qualitativa, utilizando a História Oral Temática para coleta e análise de dados. Foram entrevistadas dez mulheres com aids em um Hospital de referência em Fortaleza-CE, de dezembro de 2004 a março de 2005. Para coleta de dados utilizou-se roteiro semi-estruturado, cujos dados foram categorizados. Os resultados revelam diferentes formas de enfrentamentos relacionados à fragilidade da descoberta do diagnóstico, à necessidade de ocultar a infecção decorrente da discriminação e preconceito que vivenciam, e à constante percepção da morte; além de emitirem sentimentos, como vergonha, preocupação com a família, abandono, solidão, tristeza, medo da morte, ansiedade. Concluiu-se que, apesar de mais de duas décadas de epidemia, fica evidente as dificuldades enfrentadas pelas mulheres ao vivenciarem sua infecção.Este estudio tuvo como objetivo aprender cómo las mujeres con sida enfrentan el cotidiano después de conocer su diagnóstico. Se trata de un estudio exploratorio, descriptivo, con abordaje cualitativo, utilizando la Historia Oral Temática para la recolección y el análisis de los datos. Fueron entrevistadas diez mujeres con sida en un Hospital de referencia en Fortaleza-CE, de diciembre del 2004 a marzo del 2005. Para la recolección de los datos se utilizó una guía semi-estructurada, cuyos datos fueron categorizados. Los resultados revelan diferentes formas de enfrentamiento relacionados a la fragilidad del descubrimiento del diagnóstico, a la necesidad de ocultar la infección consecuente de la discriminación y prejuicios que vivencian, y a la constante percepción de la muerte; además de reflejar sentimientos, como vergüenza, preocupación con la familia, abandono, soledad, tristeza, miedo a la muerte, ansiedad. Se concluyó que, pese

  3. A regência do verbo ir de movimento por falantes cultos de FortalezaCE: relação entre ensino e pesquisa

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    Pinheiro, Regina Cláudia

    2014-01-01

    This paper aims at describing and analyzing the use of linguistic variants of the verb valence to go, indicating displacement, used by educated speakers of the Portuguese language from Fortaleza - CE. Besides that, we will verify which factors influence this use, drawing a parallel between the research results and some textbook guidelines. For this, we searched for textbooks and analyzed researches about this issue. We are grounded on the theoretical and methodological assumptions of the Vari...

  4. RELAÇÃO ENTRE IDADE E CAPACIDADE FUNCIONAL DE IDOSAS RESIDENTES EM INSTITUIÇÕES DE LONGA PERMANÊNCIA NA CIDADE DE FORTALEZA/CE

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    Darling Kescia Araújo Peixoto Braga

    2014-12-01

    Full Text Available Introdução: O envelhecimento gera desgastes fisiológicos próprios. O sistema de valores socioculturais ocidentais e a atual configuração dos arranjos familiares associados aumenta a institucionalização de idosos, que pela fragilidade podem ter déficits na execução das atividades básicas de vida diária (ABVD's e cognição. Objetivo: Avaliar o desempenho nas ABVD, considerando a faixa etária de mulheres idosas residentes em duas Instituições de Longa Permanência para Idosos (ILPI´s na cidade de Fortaleza/CE. Métodos: Estudo seccional, realizado no período de Outubro a Dezembro de 2013 através de um censo com 24 idosas residentes em duas ILPI's. A coleta de dados foi realizada em duas etapas: formulário com caracterização da amostra e o questionário de ABVD de Barthel. Resultados: A amostra possui idade média de 80,04 anos (± 7,91; mín, = 65,0 e máx. = 90,0, eram solteira (66,6%, com baixa escolaridade (33,3% analfabetas e 33,3% com primário completo, procedentes do interior do Estado (58,3% e residiam na instituição há menos de cinco anos (58,3%. O Índice de Barthel revelou que a maioria (75% eram independentes para a realização das ABVDs, sem influenciada da faixa etária. Conclusão: As idosas residentes nas ILPI apresentam independência funcional nas ABVD e sem influência da idade.

  5. Interfaces entre a política habitacional e o Plano Diretor Participativo na metrópole Fortaleza-CE / Relations between the housing policy and participatory master plan in metropolis Fortaleza, Ceará, Brazil

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    Elizete de Oliveira Santos

    2013-12-01

    Full Text Available The housing question appears as essential element to understanding the production, consumption and appropriation processes of urban space, illuminating the relationship between sociospatial segregation and real state speculation that govern the brazilians' cities structuring. This paper proposes to discuss the relations between the Participatory Master Plan of Fortaleza (PDPFor and the Municipal Housing Policy (PHIS, aiming to contribute to the reflection of the importance of the urban and housing policies integration. The text is divided into three parts: the first discusses the context of the emergence of the master plans "new generation" in Brazil; the second reconstructs the preparation process of the PDPFor and PHIS; and the third proposes a questioning about the dialogue between the urban and housing political, based on the analysis of the content of PHIS and housing policy chapter in PDPFor.

  6. Physical activity practice by adolescents from Fortaleza, CE, Brazil

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    Freitas, Roberto Wagner Júnior Freire de; Silva, Ana Roberta Vilarouca da; Araújo, Márcio Flávio Moura de; Marinho, Niciane Bandeira Pessoa; Damasceno, Marta Maria Coelho; Oliveira, Marcos Renato de

    2010-01-01

    O objetivo da pesquisa foi conhecer os hábitos cotidianos, relacionados à prática de atividade física, em 307 estudantes entre 12 e 17 anos, de seis escolas privadas, de Fortaleza - Brasil, entre os meses de março e junho de 2007. Foi aplicado um formulário para registrar sedentarismo, IMC, pressão arterial e glicemia. Para análise das proporções foi utilizado o teste do Qui-quadrado. Cerca de 68% dos jovens eram inativos. O sedentarismo foi maior nos pesquisados do sexo feminino (p=0, 000) e...

  7. REQUALIFICAÇÃO URBANA NO CENTRO DE FORTALEZA (CE

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    Francisco Clébio Rodrigues Lopes

    2015-08-01

    Full Text Available A descentralização em Fortaleza gerou perda de população residente,desinvestimentos e expansão do comércio ambulante na Área Central nas últimastrês décadas. Face à problemática, um grupo formado por governo, empresários esociedade civil tem se reunido desde o início da década de 1990 para proporpolíticas de recuperação do Centro e, dessa forma, atrair investidores. Os projetosse interessam pela melhoria do espaço público e refletem tendências globais, porisso se baseiam numa aproximação entre o setor público e o privado mediante oestabelecimento de parcerias, asseguradas por mecanismos jurídicos. O objetivodeste artigo é analisar propostas de requalificação do bairro central. Assim,investigações em jornais, revisão bibliográfica e análise dos discursos proferidosno Fórum Viva Centro foram utilizados como instrumentos de pesquisa. Aconclusão foi que os planos de renovação combinam estratégias imobiliárias comcircuitos de valorização nas suas novas frentes de expansão.

  8. Prevalência de asma em adolescentes na cidade de Fortaleza, CE Prevalence of asthma among adolescents in the city of Fortaleza, Brazil

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    Maria de Fátima Gomes de Luna

    2009-11-01

    Full Text Available OBJETIVO: Avaliar a prevalência de asma em adolescentes (13-14 anos na cidade de Fortaleza, CE. MÉTODOS: Estudo transversal utilizando o questionário do International Study of Asthma and Allergies in Childhood e envolvendo 3.015 adolescentes de escolas públicas e privadas entre 2006 e 2007. RESULTADOS: As prevalências de "sibilos alguma vez na vida", "sibilos nos últimos doze meses" (asma ativa e "asma alguma vez na vida" (asma diagnosticada foram, respectivamente, 44,1%, 22,6% e 11,6%. As prevalências de "sibilos alguma vez na vida" (p = 0,001, "1-3 crises de sibilos nos últimos 12 meses" (p = 0,001; asma ativa (p = 0,002; "sono interrompido por sibilos menos que uma vez por semana" (p OBJECTIVE: To determine the prevalence of asthma among adolescents (13-14 years of age in the city of Fortaleza, Brazil. METHODS: This was a cross-sectional study involving 3,015 adolescents at public and private schools between 2006 and 2007. The participants completed the International Study of Asthma and Allergies in Childhood questionnaire. RESULTS: The prevalences of "wheezing ever", "wheezing within the last 12 months" (active asthma and "asthma ever" (physician-diagnosed asthma were 44.1%, 22.6% and 11.6%, respectively. The prevalences of "wheezing ever" (p = 0.001, "1-3 wheezing attacks within the last 12 months" (p = 0.001, active asthma (p = 0.002, "sleep disturbed due to wheezing less than one night per week" (p < 0.001 and "dry cough at night" (p < 0.001 were higher among girls. Private school students presented higher prevalences of "wheezing ever", active asthma, "1-3 wheezing attacks within the last 12 months", "4-12 wheezing attacks within the last 12 months" and physician-diagnosed asthma (p < 0.001 for all, as well as of "exercise-induced wheezing" (p = 0.032. CONCLUSIONS: The prevalence of asthma and asthma-related symptoms in students aged 13-14 years in the city of Fortaleza, Brazil, was high, predominantly among girls and private

  9. Identificação dos desafios do Arranjo Produtivo Local de Tecnologia da Informação de Fortaleza-CE [Identification of the Challenges to the Local Productive Arrangement of Information Technology in Fortaleza-CE

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    Elias Pereira Lopes Júnior

    2011-06-01

    Full Text Available A coordenação das atividades colaborativas, visando à obtenção e consolidação de vantagens competitivas sustentáveis, é considerada como característica básica de uma governança local indutora de desenvolvimento regional. Este trabalho tem o objetivo de identificar os desafios relacionados com o desenvolvimento do Arranjo Produtivo Local (APL de Tecnologia da Informação (TI de Fortaleza mediante a análise dos conteúdos dos discursos declarados pelas instituições representativas do setor. A pesquisa, realizada entre junho e outubro de 2007, é considerada de caráter exploratório, amparada em dados primários, através da análise de conteúdo como técnica de investigação, havendo a incorporação de elementos quantitativos e qualitativos no tratamento das informações como prevê Godoy (1995. Foram identificados trinta e cinco desafios relacionados com o desenvolvimento do APL de Fortaleza. Estes se agrupam em quatro fatores críticos que refletem as principais demandas, de acordo com as bases para o fortalecimento da infra-estrutura e das relações de mercado do aglomerado. --- Identification of the Challenges to the Local Productive Arrangement of Information Technology in Fortaleza-CE --- Abstract: --- The coordination of collaborative activities in order to collection and consolidation of sustainable competitive advantage is considered a basic feature of local governance induces regional development. This work aims to identify the challenges related to the development of the Local Productive Arrangement (APL of Information Technology (IT from Fortaleza by analysis of the content of the speeches reported by the representative of the sector. The research, conducted from June to October 2007, is considered exploratory in nature, supported by primary data through analysis of content and technical research with the incorporation of quantitative and qualitative elements in the treatment of information as provided Godoy (1995

  10. Knowledge about epilepsy by students and staff of a school in Fortaleza-CE

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    Silvânia Maria Mendes Vasconcelos

    2009-12-01

    Full Text Available Objective: To assess the knowledge of teachers, students and employees of a school about epilepsy. Methods: A descriptive cross-sectional, quantitative study held in a school in Fortaleza - CE. The universe consisted of all students and staff at the school who met the following inclusion criteria: to be a student or employee of the night shift, to be 18 years old or above. Data collection occurred in September 2007, by applying a structured questionnaire. From 69 questionnaires, 50 were completed by students, 11 by teachers and eight by other school employees. We divided the sample into two groups: staff (employees and teachers and students. Results: The results show that 22% of staff believed that one of the forms of epilepsy transmission occurred through saliva. It was found that 98% of staff and 94% of students said that epilepsy is a neurological disorder. Concerning the control of the disease, 94% of students and 78% of staff believed that it occurs by taking the medication daily. Among the respondents, 29% of staff and 22% of students felt that people with epilepsy have difficulty in school learning. It was also observed that most participants scored appropriate procedures to be adopted in the seizure. Conclusion: The research determined gaps in the knowledge about epilepsy in the studied sample.

  11. Implantação do Programa Saúde na escola em Fortaleza-CE: atuação de equipe da Estratégia Saúde da Família Implantación del Programa de Salud Escolar en Fortaleza-CE: desempeño de equipo de la Estrategia Salud de la Familia School Health Program implementation in Fortaleza-CE: performance of the Family Health Strategy staff

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    Lindelvania Matias de Santiago

    2012-12-01

    Full Text Available Este trabalho relata a experiência da implantação do Programa Saúde na Escola (PSE por uma equipe da Estratégia Saúde da Família (ESF em uma escola pública em Fortaleza-CE. As atividades desenvolvidas incluíram seminário de implantação do PSE com os docentes e integrantes da ESF, oficinas com os estudantes, avaliação clinica e odontológica dos adolescentes e entrega de Cadernetas de Saúde do Adolescente. A implantação do PSE permitiu aos profissionais de saúde a percepção do seu papel social de educador e possibilitou aos adolescentes maior contato com a equipe da ESF. A aproximação entre escola e ESF é fundamental para ajudar os adolescentes a transformarem a informação científica em comportamentos saudáveis.Este artículo relata la experiencia de implementación del Programa de Salud Escolar (PSE por un equipo de la Estrategia de Salud de la Familia (ESF en una escuela pública en Fortaleza-CE, Brasil. Las actividades incluyeron seminario de despliegue del PSE con los maestros y los miembros de la ESF, talleres con los estudiantes, la evaluación clínica y dental de los adolescentes y la entrega de folletos de Salud del Adolescente. La aplicación del PSE permitió a los profesionales de salud a darse cuenta de su papel social como educadores y permitió a los adolescentes un mayor contacto con el personal de la ESF. El acercamiento entre la escuela y el FSE es crucial para ayudar a los adolescentes a transformar el conocimiento científico en comportamientos saludables.This work reports the experience of implementation of the School Health Program (PSE by a team from the Family Health Strategy (FHS in a public school in Fortaleza-CE , Brazil. The activities included conference about the deployment of the PSE with teachers and members of the FHS, workshops with students, clinical and dental assessment for adolescents and delivery of Booklets of Adolescent Health. The implementation of the PSE allowed health

  12. CARACTERIZAÇÃO DE GESTANTES COM TESTE RÁPIDO POSITIVO PARA HIV EM FORTALEZA-CE

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    LÉA MARIA MOURA BARROSO

    2007-01-01

    Full Text Available El objetivo fue describir a las gestantes sometidas al test rápido para detectar VIH/SIDA en una maternidad de Fortaleza- CE, en relación a las características sociodemográficas y clínicas. Estudio transversal del tipo documental retrospectivo, con trece gestantes sometidas al test rápido y con resultado positivo para VIH/SIDA en el periodo de abril de 2002 a abril de 2004. El promedio de edad de las gestantes era 26,2 años; el 61,5% estudió entre cuatro a siete años; el 69,2 % era de la capital y el 30,8 % del interior; el 53,8 % ama de casa; el 54,0 % con cuatro a siete consultas de prenatal; el 46,2 % fue diagnosticada antes del parto; el 84,6 % recibió profilaxis solamente en el parto; el 46,0% tuvo bolsa rota hasta cuatro horas antes del parto; el 77,0% parto quirúrgico y el 100% de los recién nacidos recibió el jarabe de AZT en las primeras dos horas de vida. Se concluye que la institución garantizó la reducción del riesgo de contaminación del recién nacido, sin embargo se percibió deficiencia en los servicios que ofrecieron atención antes del parto.

  13. Gravidez em adolescentes de uma unidade municipal de saúde em Fortaleza - Ceará Embarazo en adolescentes de una unidad municipal de salud en Fortaleza - Ceára (Brasil Pregnancy in adolescents of a city health unit in Fortaleza - Ceára (Brazil

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    Conceição de Maria Arcanjo

    2007-09-01

    Full Text Available Estudo quantitativo com objetivo de conhecer a gravidez na adolescência em unidade municipal de saúde, Fortaleza-CE. A amostra foi composta por 40 adolescentes. Como resultado, encontramos: 20% estavam entre 14 e 15 anos, 7,5% eram solteiras, 5%, casadas, 7,5% tinham união consensual; 60% tinham entre 16 e 17 anos, 5% eram solteiras, 7,5%, casadas, 47,5% tinham união consensual; 20% tinham entre 18 e 19 anos, 12,5% eram solteiras, 7,5%, casadas. E, ainda: 17,5% tiveram experiência do aborto, 50% deixaram de estudar por causa da gravidez, 25% não gostam de estudar, 20% não acham importante, 57,5% iniciaram pré-natal com três a quatro meses de gestação, 80% dos pais assumem a paternidade, 70% delas continuavam morando com a família, 70% receberam orientações sobre gravidez, 60% não utilizavam método contraceptivo, 37,5% desejam ser dona de casa, 27,5% não têm planos para o futuro. Concluímos que as adolescentes engravidam em faixa etária precoce, não percebem os riscos inerentes à gravidez e deixam de lado o estudo, lazer, vaidade ou mesmo perspectivas para o futuro. A nosso ver, o estudo pode contribuir para o redimensionamento do trabalho com adolescentes na unidade local do estudo.Estudio cuantitativo con el objetivo de conocer el embarazo en la adolescencia de una unidad municipal de salud, Fortaleza CE (Brasil. La muestra fue compuesta por 40 adolescentes. Como resultado encontramos: 20% estaban entre 14-15 años, 7,5% solteras, 5% casadas, 7,5% unión consensual; 60% entre 16 y 17años, 5% solteras, 7,5% casadas, 47,5% unión consensual; 20% entre 18-19 años, 12,5% solteras, 7,5% casadas. Y todavía 17,5% tuvieran experiencia del aborto, 50% dejaron de estudiar debido el embarazo, 25% no les gusta estudiar, 20% no encuentra importante, 57,5% empezaron prenatal con tres a cuatro meses de la gestación, 80% de los padres asumen la paternidad, 70% continúan viviendo con la familia, 70% recibieran las orientaciones en el

  14. Perfil dos níveis pressóricos e glicêmicos de funcionários de instituições públicas hospitalares de Fortaleza-Ceará: profile of the public hospitals' staff in the city of Fortaleza-CE Perfil de los niveles de glucosa e de tensión arterial de trabajadores de hospitales públicos de Fortaleza-CE Glucose and blood pressure level

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    Marta Maria Coelho Damasceno

    2006-08-01

    Full Text Available Objetivou-se identificar o perfil dos níveis pressóricos e glicêmicos de funcionários de dois hospitais públicos de Fortaleza-CE. Aferiram-se os valores em 506 sujeitos utilizando glicosímetro e esfigmomanômetro aneróide, de setembro de 2003 a abril de 2004. As idades variaram entre 18 e 71 anos; 79,6% eram mulheres; 49,3% pré-hipertensos; 19,5% hipertensos; 7,9% com glicemia > 140 mg/dl; 38,5% com alto risco para DM2. A PA foi mais elevada nos homens (pEl objetivo fué identificar el perfil de los niveles de glucosa y de tensión arterial de trabajadores de dos hospitales públicos de Fortaleza-CE. Se tomarón los valores en 506 personas con el Sistema de Medición de Glucosa en sangre y esfigmomanómetro aneroide, de septiembre de 2003 a abril de 2004. Las edades cambiaron entre 18 a 71 años; 79,6% mujeres; 49,3% tenian prehipertensión arterial; 19,5% hipertensión arterial; 7,9% con glucosa mas de 140 mg/dl; 38,5% con alto riesgo para DM2. La tensión arterial fue más elevada en hombres (pIt was objectified to identify the profile of the glucose and blood pressure in two public hospitals' staff in Fortaleza - CE . From September 2003 to April 2004, were checked 506 individuals with Blood Glucose Monitoring System and aneroid sphygmomanometer. The results showed that the individuals were between 18 and 71 years old; 79,6% were women; 49,3 were classified as prehypertensive; 19.5% as hypertensive; 7.9% had glucose level above 140mg/dl and 38.5% had high chances of developing DM2. High blood pressure was higher in men (p<0.001; the illiterates/literates ( p=0.031 and the married and widowed (p=0.029. This high blood pressure was associated with age (p<0.001; As to the glucose levels, a statistically meaningful association with age and high glucose (p=0.006 was verified. It follows that the studied population, especially the elderly and low educated, need educational actions which help to change their life habits and prevent illnesses

  15. Prática de atividade física por adolescentes de Fortaleza, CE, Brasil Práctica de actividad física por adolescentes de Fortaleza, CE, Brasil Physical activity practice by adolescents from Fortaleza, CE, Brazil

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    Roberto Wagner Júnior Freire de Freitas

    2010-06-01

    Full Text Available O objetivo da pesquisa foi conhecer os hábitos cotidianos, relacionados à prática de atividade física, em 307 estudantes entre 12 e 17 anos, de seis escolas privadas, de Fortaleza - Brasil, entre os meses de março e junho de 2007. Foi aplicado um formulário para registrar sedentarismo, IMC, pressão arterial e glicemia. Para análise das proporções foi utilizado o teste do Qui-quadrado. Cerca de 68% dos jovens eram inativos. O sedentarismo foi maior nos pesquisados do sexo feminino (p=0, 000 e naqueles com excesso de peso (p=0,001. Entre os adolescentes ativos o exercício físico mais praticado era o futebol (42% e a musculação (19%. A educação em saúde nas escolas pode auxiliar no combate desse sedentarismo juvenil.El objetivo del estudio fue el de conocer los hábitos cotidianos, relacionados a la práctica de actividad física, en 307 estudiantes entre 12 y 17 años, de seis escuelas privadas, de Fortaleza-Brasil, en los meses de marzo y junio de 2007. Se aplicó una encuesta en que se registraron sedentarismo, IMC, pressión arterial y glicemia. Para los análisis de asociación entre proporciones, fue usado lo teste de Qui-quadrado. Aproximadamente 68% de los jóvenes eran sedentários. El sedentarismo fue mayor en los investigados del sexo femenino (p=0, 000 y en los que tenían con sobrepeso (p=0, 001. En los jóvenes activos el ejercicio más practicado era el fútbol (42% y peso (19%. La educación para la salud en la escuela puede ayudar en la lucha contra el sedentarismo en los jóvenes.It aimed to learn the daily habits related to the physical activity practice among private state schools adolescents in Fortaleza-Brazil. We investigated 307 students between 12 and 17 years old from six private schools, in the months March to June 2007. We applied a form which recorded sedentarism, BMI, blood pressure and blood glucose. The chi-squared test was used for to analysis the proportions. About 68% of young people were

  16. Avaliação da qualidade do sono de estudantes universitários de Fortaleza-CE

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    Márcio Flávio Moura de Araújo

    2013-01-01

    Full Text Available El objetivo de esta investigación fue evaluar la calidad del sueño de los estudiantes universitarios en Fortaleza, Ceará, Brasil. Se realizó una encuesta con los estudiantes de 701 en la Universidad Federal de Ceará (UFC entre marzo y junio de 2011. Se utilizó el índice de la Calidad del Sueño de Pittsburgh (PSQI. La mayoría de los estudiantes tenía una mala calidad subjetiva del sueño (54%, la latencia del sueño y la eficiencia de menos de 15 minutos (60,1% y 65% (99%, respectivamente. La duración del sueño de la muestra fue de 6,3 horas por día (SD ± 1,4 horas (p <0,001. El análisis de los siete componentes del PSQI mostró que una parte sustancial de los estudiantes universitarios encuestados (95,2% tienen mala calidad del sueño. El análisis de datos reveló que una parte sustancial de la universidad investigado (95,3% tenían mala calidad del sueño.

  17. Radiometric survey in the sites of Regional office in Fortaleza, research gallery and camp in Itataia, CE (Brazil)

    International Nuclear Information System (INIS)

    1982-02-01

    The radiometric survey in Regional officer sites in Fortaleza, Brazil, research gallery and camp in Itataia is presented. The measurings to be done, the instrumentation used and results obtained are described as well as the conclusions and recommendations. (C.M.) [pt

  18. Inovações sustentáveis e vantagem competitiva : um estudo qualitativo no setor hoteleiro em Fortaleza-CE

    OpenAIRE

    Cardoso, Márcia Lopes

    2014-01-01

    A presente pesquisa tem por objetivo analisar como a adoção de inovações visando à sustentabilidade influencia a obtenção de vantagem competitiva das empresas do setor hoteleiro de Fortaleza. Para a construção do arcabouço teórico foram utilizados autores clássicos, como Barbieri, Gallouj, Porter, Schumpeter, Tidd, Bessant e Pavitt, entre outros; e periódicos internacionais atuais. O estudo adotou o modelo conceitual proposto Chen, Lai e Wen (2006) e Hansen, Grosse-Dunker e...

  19. AVALIAÇÃO PRELIMINAR DA PARTICIPAÇÃO POPULAR NO PROCESSO DE ARBORIZAÇÃO URBANA NA CIDADE DE FORTALEZA (CE

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    Carlos Germano Ferreira Costa

    2014-12-01

    Full Text Available Normal 0 21 false false false PT-BR X-NONE X-NONE MicrosoftInternetExplorer4 Este trabalho analisa qualitativamente a opinião de 274 acadêmicos da Universidade Federal do Ceará sobre a participação popular no processo de implantação e manutenção da Arborização Urbana na cidade de Fortaleza-Ceará. O estudo foi conduzido a partir da avaliação do entrevistado, por um questionário realizado em Meio de 2007, indagando sobre participar de ações voluntárias para o plantio de árvores e manutenção da arborização urbana no município de Fortaleza, e busca avaliar os motivos que os levaria a envolver-se em ações desta natureza e procura identificar na ótica da população os desafios que a participação popular enfrenta no processo de tomada de decisão no município de Fortaleza-Ce. Os resultados analisados demonstram a influência do gênero e a falha de órgãos públicos em tomar vantagem da vontade de participação da população em participar de ações de Arborização Urbana. A questão de gênero é destacada no presente trabalho

  20. La práctica de actividad física entre los adolescentes de las escuelas públicas del estado en Fortaleza (Brasil)

    OpenAIRE

    Marta Maria Coelho Damasceno; Roberto Wagner Junior Freire de Freitas; Ana Roberta Vilarouca da Silva; Paulo César de Almeida; Miguel Nasser Hissa

    2009-01-01

    El objetivo del estudio fue el de conocer los hábitos cotidianos, relacionados a la práctica de actividad física, mostrados por adolescentes de escuelas públicas de Fortaleza – Brasil. Estudio transversal en el cual participaron 720 estudiantes pertenecientes a doce escuelas públicas estatales, cuya edad variaba entre 14 y 19 años y de ambos sexos. Los datos se recogieron durante los meses de febrero y marzo de 2006, a través de entrevista estructurada. Además, se verificó peso y altura y se ...

  1. ANÁLISE DAS PRECIPITAÇÕES DIÁRIAS INTENSAS E IMPACTOS GERADOS EM FORTALEZA, CE

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    Maria Elisa Zanella

    2009-08-01

    Full Text Available The article deals with environmental problems arising from urban extreme rainfall events. The impacts are analyzed from the perspective of Monteiro’s (1976, 2003 Sistema Clima Urbano – subsistema hidrometeorico (Urban Climate System-subsystem Hydro meteoric. This model identifies the occurrence of daily rainfall totals greater than or equal to 60 mm, in the municipalities of Fortaleza, Maranguape and Pacatuba. The results show a significant number of rainfall events concentrated in the series studied; show also impacts such as flooding in areas of risk, deaths, traffic jams, loss of trees, structural collapse of homes, widespread leaks, lack of water, electricity and telephone, among others. It was found that the impacts are the consequence of occupation of the areas subject to flooding, and of the lack of infrastructure of the municipality.

  2. Diagnóstico da geração e da composição dos RCD de Fortaleza/CE Generation and composition diagnosis of C&D waste of Fortaleza/CE

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    Maria Elane Dias de Oliveira

    2011-09-01

    Full Text Available Este trabalho objetivou apresentar os resultados de um diagnóstico anual da geração e da composição dos resíduos de construção e demolição de Fortaleza. Durante 12 meses, foram colhidas informações das empresas coletoras e da prefeitura, tais como a quantidade e o preço do metro cúbico do entulho coletado e o destino dado a ele. Foram ainda coletadas amostras de resíduos de construção e demolição nos locais de descarte licenciados pela prefeitura. Os resultados apontam que os locais licenciados recebem em média 702 toneladas.dia-1, sendo que a composição desses resíduos de construção e demolição é, em média, de 65% de restos de argamassa, concreto e material cerâmico. Constatou-se também que grande parte desse tipo de resíduo é descartado ilegalmente, sendo que os dois principais aterros irregulares somam uma área aproximada de 26 hectares. Estima-se que esse sistema movimenta R$ 4,5 milhões anualmente e que quase metade desse montante é aportado somente pela Prefeitura Municipal.This article aimed to present the results of an annual diagnosis of generation and composition of Fortaleza’s construction and demolition waste. During 12 months CDW collection companies’ and the city hall’ information were researched, such as the amount and the price of the cubic meter of the collected wastes and the destiny given to them. Samples of construction and demolition waste were either collected at the licensed disposal places. The results point that licensed places receive 702 tons.day-1, on average, and the composition of this construction and demolition waste is made, on average, by 65% of mortar, concrete and ceramic material. It was also verified that great part of this waste is discarded illegally, and the two main irregular disposal sites have an approximate area of 26 hectares. It is estimated that system costs approximately R$4.5 million annually and almost half of this amount is paid only by

  3. APRENDIZADOS E ORIENTAÇÃO POR ERROS EM EMPREENDEDORES DO RAMO DE RESTAURANTES EM FORTALEZA-CE

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    Denis Pontes Coelho

    2016-07-01

    Full Text Available Partindo de estudos sobre sucesso e fracasso empresarial o tema perfil empreendedor toma seu lugar de importância, mais especificamente sobre a capacidade de aprender com os próprios erros. Considerando o fator Aprendizagem por erros como um fator pouco estudado academicamente e então de pouca importância no perfil do empreendedor, a pesquisa se propõe a responder o problema de partida; De quais aprendizados por erros são relatados pelos empresários, assim como sua postura em relação aos erros. De cunho qualitativo e exploratório, a pesquisa se concentrou em investigar os empreendedores do ramo de restaurantes da zona gastronômica de Fortaleza, no que se refere aos seus aprendizados e se conseguem aprender com os erros. Teve como base a teoria de M. Frese de Orientação por Erros e da Aprendizagem Significativa de D. Ausubel. Os resultados mostraram que eles têm uma postura de Orientação por erros e de aprendizados relacionados nas áreas de Gestão de Pessoas e atendimento ao cliente. Palavras-chave: Aprendizados; orientação por erros; perfil do Empreendedor; sucesso empresarial.   Based on studies of success and business failure the entrepreneurial subject takes its place of importance, specifically on the ability to learn from mistakes. Considering the learning factor by errors as academically understudied factor and then of little importance in the entrepreneurial profile, the research aims to answer the starting problem: which learnings from errors are reported by the entrepreneurs as well as their attitude towards mistakes. Qualitative and exploratory nature, the research focused on investigating the entrepreneurs of the restaurant business at the gastronomic area of Fortaleza, in regard to their learning capacity and potential from mistakes. It was based on the theory of M. Frese about orientation after Errors and the Significant Learning by D. Ausubel. The results showed that they have a Guidance posture after mistakes

  4. Implantação do Programa Saúde na escola em Fortaleza-CE: atuação de equipe da Estratégia Saúde da Família

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    Lindelvania Matias de Santiago

    Full Text Available Este trabalho relata a experiência da implantação do Programa Saúde na Escola (PSE por uma equipe da Estratégia Saúde da Família (ESF em uma escola pública em Fortaleza-CE. As atividades desenvolvidas incluíram seminário de implantação do PSE com os docentes e integrantes da ESF, oficinas com os estudantes, avaliação clinica e odontológica dos adolescentes e entrega de Cadernetas de Saúde do Adolescente. A implantação do PSE permitiu aos profissionais de saúde a percepção do seu papel social de educador e possibilitou aos adolescentes maior contato com a equipe da ESF. A aproximação entre escola e ESF é fundamental para ajudar os adolescentes a transformarem a informação científica em comportamentos saudáveis.

  5. Implantação do Programa Saúde na escola em Fortaleza-CE: atuação de equipe da Estratégia Saúde da Família

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    Lindelvania Matias de Santiago

    2012-12-01

    Full Text Available Este trabalho relata a experiência da implantação do Programa Saúde na Escola (PSE por uma equipe da Estratégia Saúde da Família (ESF em uma escola pública em Fortaleza-CE. As atividades desenvolvidas incluíram seminário de implantação do PSE com os docentes e integrantes da ESF, oficinas com os estudantes, avaliação clinica e odontológica dos adolescentes e entrega de Cadernetas de Saúde do Adolescente. A implantação do PSE permitiu aos profissionais de saúde a percepção do seu papel social de educador e possibilitou aos adolescentes maior contato com a equipe da ESF. A aproximação entre escola e ESF é fundamental para ajudar os adolescentes a transformarem a informação científica em comportamentos saudáveis.

  6. Acesso ao serviço de emergência pelos usuários com crise hipertensiva em um hospital de Fortaleza, CE, Brasil Aceso al servicio de urgencia por clientes con crisis de presión alta en un hospital de Fortaleza, CE, Brasil Access to the emergency service by clients with hipertensive crisis in a hospital in Fortaleza, CE, Brazil

    Directory of Open Access Journals (Sweden)

    Ana Célia Caetano de Souza

    2009-08-01

    Full Text Available A crise hipertensiva é uma elevação abrupta e sintomática da pressão arterial com risco de deterioração aguda de órgãos-alvo. Embora na literatura a prevalência do agravo seja de 1%, os riscos de complicações e de morte associadas ao problema de saúde nos serviços de emergência têm revelado a necessidade de aprofundar questões relacionadas ao acesso ao serviço de saúde. Trata-se de uma pesquisa de natureza quantitativa, descritiva, realizada em um hospital público do município de Fortaleza, no período de abril a julho de 2006, com 118 pacientes. Os resultados demonstram que a população com crise hipertensiva tem procurado os serviços de saúde, principalmente os de emergência, a fim de obter atendimento. O estudo indica o acesso como um elemento essencial para satisfação das necessidades dos usuários que procuram os serviços de saúde, sendo o tempo de espera, a resolubilidade e o acolhimento parâmetros importantes na qualidade do atendimento.La crisis hipertensiva es una elevación abrupta y sintomática de la presión arterial con riesgo de deterioro agudo de órganos-blanco. Aunque en las publicaciones la prevalencia del agravamiento sea de 1%, los riesgos de complicaciones y de muerte asociadas al problema de salud en los servicios de emergencia han revelado la necesidad de profundizar en las cuestiones relacionadas al acceso al servicio de salud. Se trata de una investigación de naturaleza cuantitativa, descriptiva, realizada en un hospital público del municipio de Fortaleza, en el periodo de abril a julio de 2006, con 118 pacientes. Los resultados demuestran que la población con crisis hipertensiva ha buscado los servicios de salud, principalmente los de emergencia, para obtener atención. El estudio indica el acceso como un elemento esencial para la satisfacción de las necesidades de los usuarios que buscan los servicios de salud, siendo el tiempo de espera, la resolutividad y la acogida, los par

  7. PRODUÇÃO DO ESPAÇO URBANO: NORTH SHOPPING NA DINÂMICA DE NOVAS CENTRALIDADES EM FORTALEZA- CE

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    Tiago Estevam Gonçalves

    2011-04-01

    Full Text Available Esta pesquisa tem como objetivo analisar a formação das novas centralidades em Fortaleza e sua relação com os shopping centers, tendo como shopping em destaque: North Shopping (inaugurado em 1991, localizado na avenida Bezerra de Menezes . No campo metodológico, realizaram-se levantamentos bibliográficos sobre a formação novas centralidades, o processo de produção do espaço urbano fortalezense incentivado pelo setor terciário e shopping center que contribuíram para o entendimento da transformação da cidade, além disso, realizamos visitamos e entrevistas no Norh Shopping. Uma das primeiras áreas centrais a se desenvolver além do Centro tradicional foi a da Aldeota incentivada pelo Center Um (instalado em 1974, na avenida Santos Dumont. Desde a formação das primeiras novas centralidades até o período atual sempre existiu uma relação intrínseca entre estas com os shoppings. Estes equipamentos modernos (shoppings aparecem com novos espaços de consumo ou novos consumos de espaço que cria e recria novas formas para atrair as pessoas ao consumo, considerando o consumir como signo de felicidade. Nesta perspectiva podemos afirmar que as atividades terciárias e os equipamentos modernos de consumo atuam no crescimento e na organização do espaço urbano, assim geram uma dinâmica comercial em Fortaleza.

  8. Produção orgânica: predileção de consumo e potencialidades do seguimento em FortalezaCE

    Directory of Open Access Journals (Sweden)

    C. S. P. Oliveira

    2015-12-01

    Full Text Available Este trabalho objetivou investigar o perfil de consumidores de produtos orgânicos, bem como sua forma de aquisição e quais as preferências que influenciam no momento de decidir sobre a compra. O presente estudo foi desenvolvido durante a VIII FECEAF – Feira Cearense da Agricultura Familiar – em Fortaleza, Ceará, durante julho de 2015, totalizando 100 sujeitos amostrais. Foram respondidas questões objetivas referentes ao perfil do consumidor, onde os indivíduos do sexo feminino (51%, à faixa etária entre 21 a 30 (39% e o ensino médio (48% desse público obtiveram maior representatividade. Observou-se ainda o pouco conhecimento acerca dos produtos orgânicos entre os entrevistados (61%, tendo a televisão como principal fonte de informação a respeito do tema (34%. No que diz respeito aos hábitos de consumo e a forma de aquisição desse tipo de produto, 54% dos respondentes o escolhem por apresentar uma melhor qualidade quando comparados aos convencionais, 43% o consomem todos os dias e 41% costumam adquiri-los em supermercados. Já o hábito familiar de consumo obteve um percentual expressivo (87%, em que todos os integrantes da família fazem uso do consumo de produtos orgânicos. Quanto à atratividade, 53% relatam que a ausência de agrotóxicos tornam os produtos orgânicos mais atrativos. Entre os orgânicos mais consumidos, as frutas (53% e as hortaliças (29% obtiveram maior destaque. Nesse sentido concluímos com o trabalho que os hábitos alimentares das famílias tem se tornado cada vez mais saudáveis, dando espaço ao crescimento do comércio do produto orgânico, fortalecendo o mercado incentivando a produção. Organic production: consumer preference and potential tracking in Fortaleza – CEAbstract: This study aimed to investigate the profile of consumers of organic products as well as their way of acquisition and which preferences that influence when deciding on the purchase. This study was developed during the

  9. PERCEPÇÃO DAS MÃES SOBRE ALEITAMENTO EM PREMATUROS DA UNIDADE CANGURU DE UMA MATERNIDADE DE FORTALEZA - CE

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    KARLA MARIA CARNEIRO ROLIM

    2008-01-01

    Full Text Available El objetivo de este estudio fue saber cómo perciben las madres el proceso de lactancia materna en prematuros asistidos en la Unidad Madre Canguro. Estudio descriptivo, con planteo cualitativo, realizado en una maternidad pública, en Fortaleza-CE, en el período de enero a mayo de 2007. Los sujetos sondeados fueron 10 madres que se hallaban con bebés internados en la Unidad. Se utilizó entrevista estructurada en parte, de la cual surgieron las categorías: conocimiento materno sobre el bebé prematuro, percepción de las madres sobre el método madre canguro, apreciación de las madres en amamantar un bebé prematuro y satisfacción con el servicio. El vínculo afectivo del binomio madre e hijo quedó en evidencia y, a su vez, considerado factor significativo en la recuperación del bebé.

  10. “Trabalhadas no feminino”: um estudo sobre corpo, desejo e prostituição travesti em Fortaleza-CE

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    Francisco Jander De Sousa Nogueira

    2012-04-01

    Full Text Available Este trabalho toma como foco de análise travestis que se prostituem na cidade de Fortaleza-Ce. São apresentadas narrativas sobre suas transformações corporais, experiência que engloba um conjunto de processos e vivências. Contrastando com concepções de identidades que privilegiam a coerência e a linearidade, apresento trajetórias e relatos autobiográficos contextualizados por descontinuidades. Travestis efetuam transformações em suas formas físicas, seja com o aval da medicina legal ou na clandestinidade. Entendo que a utilização destes corpos como objeto de desejo expostos nas “ruas” vai além das discussões que permeiam a travestilidade como uma realidade estigmatizada. No trabalho de campo, mobilizei ferramentas metodológicas que permitiram a apreensão de singularidades e de expressividades concernentes à complexa experiência de tentarem “passar por mulher” vinte e quarto horas por dia.

  11. A erosividade das chuvas em Fortaleza (CE: I - distribuição, probabilidade de ocorrência e período de retorno - 1ª aproximação Rainfall erosivity in Fortaleza, Ceará State, Brazil: I - distribution, probability of occurrence and return period - 1st approximation

    Directory of Open Access Journals (Sweden)

    A. S. Dias

    2003-04-01

    Full Text Available A aplicação da Equação Universal de Perdas de Solo para previsão de perdas por erosão e para planejamento conservacionista requer a avaliação de valores locais de índices de erosividade da chuva. Visando contribuir para o conhecimento desses índices na zona litorânea do estado do Ceará, os objetivos do presente estudo foram: (a determinar o fator R e os valores anuais do índice EI30, sua distribuição mensal, probabilidade de ocorrência e períodos de retorno em Fortaleza (CE no período de 1962 a 1981, e (b criar um banco de dados que permita, numa análise posterior, avaliar as correlações entre o índice EI30 e as chuvas mensais, com vistas em simplificar o cálculo desse índice e atualizar seus valores durante o período de 1982 a 2000. A energia cinética total, intensidades uniformes, intensidades máximas em 30 minutos e o índice EI30 em chuvas individuais foram determinados em 7.300 diagramas diários de pluviógrafo do período de 1962 a 1981, disponíveis na Estação Meteorológica da Universidade Federal do Ceará, em Fortaleza. Distribuições de freqüência dos valores máximos individuais e anuais do índice EI30 e seus períodos de retorno foram calculados e plotados em curvas de probabilidades de ocorrência desses valores. No período de 20 anos, o valor do fator R em Fortaleza foi de 6.774 com uma amplitude de 2.237 a 12.882 MJ mm (ha h ano-1. Esse valor médio anual pode ocorrer ou ser superado pelo menos uma vez a cada 2,2 anos, com uma probabilidade de 46 %. Os valores individuais máximos estimados para os períodos de retorno de 2, 5, 20, 50 e 100 anos foram de 1.363, 2.415, 3.783, 5.950 e 8.000 MJ mm (ha h-1, respectivamente. Nos meses de fevereiro a maio, são esperadas as mais altas perdas de solo e água, posto que 70 % do valor anual do índice de erosividade ocorre nesse período, quando é utilizado o preparo convencional do solo e a cobertura vegetal é incipiente.The use of the Universal Soil

  12. Progress at ROEN - Fortaleza Geodetic Station

    Science.gov (United States)

    Kaufman, Pierre; Macilio Pereira de Lucena, A.; Tateyama, Claudio E.

    1999-08-01

    This report presents the works developed at ROEN: Radio-Observatorio Espacial do Nordeste, Eusebio near Fortaleza, CE, Brazil, in 1998. Activities were related to observing sessions, major maintenance items, and scientific results obtained.

  13. O compartilhamento do cuidado em saúde mental: uma experiência de cogestão de um centro de atenção psicossocial em Fortaleza, CE, apoiada em abordagens psicossociais The partnership in the mental health care: an experience in psicossocial approaches and in the co-management of a mental health community service in Fortaleza/CE

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    Maria Gabriela Curubeto Godoy

    2012-05-01

    Full Text Available Este artigo aborda a trajetória de uma experiência comunitária vinculada a uma organização não governamental, o Movimento de Saúde Mental Comunitária do Bom Jardim e a parceria celebrada entre essa entidade e a Secretaria Municipal de Saúde de Fortaleza. Tal parceria vem proporcionando a expansão de ações psicossociais, bem como a cogestão de um Centro de Atenção Psicossocial tipo II inaugurado em 2005 (CAPS Comunitário do Bom Jardim. Geograficamente situado na Regional V, área com os piores indicadores sociais e sanitários de Fortaleza, o Movimento de Saúde Mental Comunitária do Bom Jardim oferta atividades como Terapia Comunitária, Biodança, Arteterapia, Grupos de autoestima, Massoterapia, Reiki, Shiatsu, Quiropraxia, Oficinas de arte, música e teatro, cursos profissionalizantes e atividades lúdicas e educativas para diversas faixas etárias da população do bairro. A articulação entre as ações implementadas pelo Movimento de Saúde Mental Comunitária do Bom Jardim e a parceria com a Secretaria Municipal de Saúde de Fortaleza apresenta desafios e possibilidades na tentativa de construção da integralidade no campo da atenção psicossocial. Neste artigo apresentamos a trajetória histórica da referida entidade, descrevemos algumas de suas principais atividades e realizamos uma breve análise da parceria com a Secretaria Municipal de Saúde e o processo de cogestão do Centro de Atenção Psicossocial, apontando também alguns desafios e possibilidades encontradas nessa tentativa de convergência entre uma concepção de trabalho comunitário e a lógica burocrático-normativa sobre a qual geralmente se sustenta a atuação de instituições estatais de saúde.This is the report of the partnership experience between a nongovernmental organization that works with Mental Health and the Health Municipal Commission of Fortaleza/Ceará. This partnership has expanded several psychosocial actions as Community Therapy

  14. La práctica de actividad física entre los adolescentes de las escuelas públicas del estado en Fortaleza (Brasil

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    Marta Maria Coelho Damasceno

    2009-06-01

    Full Text Available El objetivo del estudio fue el de conocer los hábitos cotidianos, relacionados a la práctica de actividad física, mostrados por adolescentes de escuelas públicas de Fortaleza – Brasil. Estudio transversal en el cual participaron 720 estudiantes pertenecientes a doce escuelas públicas estatales, cuya edad variaba entre 14 y 19 años y de ambos sexos. Los datos se recogieron durante los meses de febrero y marzo de 2006, a través de entrevista estructurada. Además, se verificó peso y altura y se midió la glucemia capilar. Los resultados mostraron que el 65,8% tenía entre 14 y 17 años; el 81,1% cursaba enseñanza secundaria; el 59,3% era del sexo femenino y el 75,3% adquirió hábitos sedentarios. De esos, el 10% estaba con sobrepeso; el 2,8% era obeso y el 8,5% tenía sus valores de glucemia capilar superior a lo normal. La práctica de actividad física estuvo relacionada al sexo (p = 0,000 y a la edad (p = 0,049. Se concluyó que hay un alto porcentaje de adolescentes sedentarios y que la educación para la salud es el camino indicado para combatir dicho sedentarismo y también ayuda a prevenir enfermedades cardiovasculares y diabetes mellitus tipo 2.

  15. Fortaleza Station Report for 2012

    Science.gov (United States)

    Kaufmann, Pierre; Pereira de Lucena, A. Macilio; Sombra da Silva, Adeildo

    2013-01-01

    This is a brief report about the activities carried out at the Fortaleza geodetic VLBI station (ROEN: R´adio Observat´orio Espacial do Nordeste), located in Eus´ebio, CE, Brazil, during the period from January until December 2012. The observing activities were resumed in May after the major maintenance that comprised the azimuth bearing replacement. The total observational experiments consisted of 103 VLBI sessions and continuous GPS monitoring recordings.

  16. Caracterização e classificação dos resíduos de construção civil da cidade de Fortaleza (CE

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    Adriana Sampaio Lima

    2013-06-01

    Full Text Available Este estudo visa analisar a composição gravimétrica, avaliar parâmetros químicos e classificar os Resíduos de Construção Civil (RCC da cidade de Fortaleza de acordo com a Resolução CONAMA nº 307 e com a NBR 10004. Os resultados indicam que o RCC de Fortaleza é composto por 93,40% do Grupo A, 6,40% do Grupo B, 0,02% do Grupo C e 0,20% Grupo D. O primeiro é composto principalmente por areia e solo (24,65% e argamassa (22,00%, que são materiais com alto potencial de reutilização ou reciclagem. Além disso, de acordo com a análise química, o RCC de Fortaleza mostrou alta variabilidade em todos os parâmetros. Cr, Pb e SO4²-, por exemplo, apresentaram valores acima dos limites especificados pela NBR 10004, indicando que esse material deve ser classificado como Classe II-A (não perigoso e não inerte.

  17. Participação social no campo da cultura e disputas simbólicas nas políticas culturais para o circo em Fortaleza (CE

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    Jocastra Holanda Bezerra

    2016-01-01

    Full Text Available The article seeks to understand the dynamics of social participation in the field of culture. It seeks to reflect about the plurality of identities and self-representations present in the circus segment, realizing how these are articulated, integrated or do not connect with each other in the sphere of participation in the cultural policies of the city of Fortaleza, Ceará. To reflect on these questions, we analyzed the discourses and the participation of agents of the circus sector on two occasions: in the construction of the proposal of the Municipal School of Circus and the formulation of the Sectorial Circus Plan in the city.

  18. Espaço Público e Shopping Center na Cidade Contemporânea: Novos Significados do North Shopping em Fortaleza - CE

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    Tiago Estevam Gonçalves

    2012-03-01

    Full Text Available Iniciar uma reflexão acerca da cidade atual nos remete à necessidade de construirmos uma análise sobre os shopping centers como espaços que tem atraído um fluxo considerável da população, ocasionando mudanças na relação dos citadinos com os espaços públicos. Nesta perspectiva, temos como objetivo analisar o North Shopping, localizado na cidade de Fortaleza, como um espaço de uso popular onde as camadas de menor poder aquisitivo podem adentrar e usufruir de seus atributos. Imbuídos de tal finalidade nosso aporte teórico fundamentou-se em Pintaudi (1992, Dantas (1995, Silva (1996 Lefebvre (1999, Carlos (2001, Gomes (2002 e Serpa (2007. Conclui-se que na cidade de Fortaleza, o North Shopping é um verdadeiro simulacro da realidade, substituindo as experiências cotidianas dos espaços públicos, configurando-se, assim, a supervalorização do espaço privado que se traveste de público tendo repercussões na nova urbanidade fortalezense.

  19. Gestão do desempenho humano: um estudo de caso em um Hospital Geral de Fortaleza (CE Administration of the human acting: a case study in a General Hospital of Fortaleza, Ceará State

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    Maria de Fátima Marrocos Fontenele

    2010-06-01

    Full Text Available A temática deste trabalho apresenta questões sobre a prática da avaliação de desempenho funcional em uma organização pública de saúde. Este eixo de análise ganha destaque a partir das dificuldades de desenvolvimento de sistemas de avaliação com alianças entre políticas de concessão de incentivos financeiros, em um contexto cultural peculiar. Nesse sentido, é necessário admitir os limites dessa ferramenta gerencial. A partir de uma pesquisa qualitativa, utilizou-se um roteiro semiestruturado de perguntas aplicado aos servidores de um hospital geral público do Estado do Ceará. Obteve-se a caracterização do sistema de avaliação de desempenho utilizado pela instituição, podendo-se verificar sua adequação aos modelos propostos na literatura e a pertinência de seus propósitos com as percepções e expectativas dos servidores pesquisados.The thematic of this work presents questions on the practice of the Evaluation of functional performance in an organization of public health. This axle of analysis gains importance from the difficulties of developing evaluation systems with alliances between policies of concession of financial incentives, in a specific cultural context. In this direction, it is necessary to admit the limits of this management tool. From a qualitative research, a semi-structured questionnaire was applied to the staff (public servers of a public general hospital of Ceará State. It was observed the characterization of the performance evaluation system used in the institution, being able to verify its adequacy to the models proposed in the literature and the relevancy of its intentions with the perceptions and expectations of the searched servers.

  20. Trabalhadores de um hospital escola em Fortaleza-CE: exposição cotidiana à hepatite B | Workers in a teaching hospital in Fortaleza, Ceará, Brazil: daily exposure to hepatitis B

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    Ana Gleice da Silveira Mota

    2015-05-01

    Full Text Available Estudo transversal, descritivo, quantitativo, que objetivou analisar os acidentes ocupacionais ocorridos entre os profissionais de saúde envolvendo risco para hepatite B, em um hospital escola, em 2013. Analisaram-se 95 notificações, a maioria (73,7% mulheres, 39 (41,1% técnico/auxiliar de enfermagem. A faixa etária prevalente foi 20 a 39 anos, com 62 (65,3% profissionais. A exposição percutânea ocorreu em 77 (81,1% casos, sendo a agulha com lúmen o principal objeto causador com 35 (36,8% e o sangue o material biológico mais notificado, com 75 (78,9% ocorrências; 81 (83,5% pacientes-fonte eram conhecidos, cinco (5,3% apresentando positividade para o HBsAg; 69 (72,6% profissionais apresentavam esquema vacinal completo para hepatite B. Quanto às condutas pós-acidente, 25 (26,3% foram vacinados e dois (2,1% utilizaram imunoglobulina. Apesar do protocolo do Ministério da Saúde (MS enfatizar a adoção de medidas de biossegurança, acidentes com profissionais ainda ocorrem, aumentando o risco de exposição às doenças veiculadas pelo sangue. -----------------------------------------------------------------------------------------------We aimed to analyze the incidence of occupational accidents involving risk for hepatitis B among healthcare professionals in a teaching hospital in 2013 using a cross-sectional design that incorporated both descriptive and quantitative data. We analyzed 95 occupational accident notifications, with the majority coming from women (73.7% working as a technical or nursing assistant (39; 41.1%. The most prevalent age group was 20–39 years, and most (62; 65.3% were professionals. Percutaneous exposure occurred in 77 (81.1% cases, with the needle lumen as the main delivery object accounting for 35 cases (36.8%. Blood was the most common biological agent, accounting for 75 cases (78.9%. Eighty-one (83.5% were known source patients, with 5 (5.3% testing positive for HBsAg. Furthermore, 69 (72.6% professionals

  1. Estilo de vida de adolescentes das escolas públicas de ensino fundamental, em Fortaleza/CE, em relação ao risco de hipertensão

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    Thiago Brasileiro de Vasconcelos

    2013-01-01

    Full Text Available Objetivo: analisar o estilo de vida dos adolescentes das escolas públicas de ensino fundamental na cidade de Fortaleza/CE, em relação ao risco de Hipertensão Arterial Sistêmica (HAS. Métodos: estudo descritivo, exploratório, transversal e quantitativo, realizado com 120 alunos de seis escolas públicas do ensino fundamental na cidade de Fortaleza/CE. A coleta de dados foi realizada de fevereiro a abril de 2007. Para tanto, foi utilizado um questionário estruturado composto de perguntas e respostas objetivas a respeito da prática de atividade física, das horas de sono, do uso de cigarro, dos hábitos alimentares, dos antecedentes familiares com HAS, de quais fatores que causam a HAS, se fazem uso de bebidas alcoólicas e por fim como se deve prevenir a HAS. Resultados: a amostra do estudo foi composta de 120 alunos de ambos os sexos com média de idade de 13,88 anos ± 1,27 ano. Em relação aos fatores de risco, 37,5% (n=45 dos estudantes realizam atividade física mais de duas vezes por semana; em relação ao hábito de fumar 96,67% (n=116 não fumam; sobre a ingestão de alimentos, 50,8% (n=61 ingerem biscoitos com suco; 94,2% (n=113 não fazem uso de bebidas alcoólicas e foi detectado que 65% (n=78 estão abaixo do peso ideal. Outro fator identificado foi que 32,50% (n=39 da amostra apresentam antecedentes familiares de primeiro e/ou segundo graus com afecções cardiovasculares, prevalecendo a HAS em 30%. Conclusão: verificou-se que os alunos realizam pouca atividade física, alimentam-se de forma inadequada com alimentos ricos em gorduras e carboidratos e apresentam antecedentes familiares com afecções cardiovasculares.

  2. Caracterização de crianças e adolescentes atendidos por maus tratos em um hospital de emergência no município de Fortaleza-CE Characterization of maltreated children and adolescents taken into a paediatric emergency health care service in Fortaleza-CE-Brazil

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    Arcelina Maria da Silva

    2001-03-01

    Full Text Available O estudo teve como objetivo caracterizar o perfil da criança e adolescente maltratados e atendidos em um hospital de emergência, no Município de Fortaleza, Ceará. Utilizou-se a pesquisa documental retrospectiva com análise dos formulários da Comissão de Maus Tratos à Infância e Adolescência. Os resultados revelaram que o sexo masculino e a faixa etária de 1 a 5 anos foram os mais atingidos; o principal agressor é o pai biológico e os tipos de violência mais freqüentes foram o hematoma, o abuso sexual e as lesões por objetos cortantes. Conclui-se que o tema requer estudos aprofundados que modifiquem o ambiente em que a criança, adolescente e famílias estão inseridos.This study aimed to characterise the profile of the child and the adolescent who were maltreated and taken into paediatric emergency care in a hospital, in Fortaleza, Ceará. It was used a documented retrospective evaluation. The results showed that the children in the age group of 1-5 years were the most victimised as well as the children of the male sex. The main perpetrator was a biological father and the most frequent kind of violence were hematomas, sexual abuse and wounds by slashing objects. In conclusion, this subject needs to be more investigated for providing changes within the' environment where a child, adolescent and families were inserted.

  3. Uso da aspiração manual a vácuo na redução do custo e duração de internamentos por aborto incompleto em Fortaleza, CE, Brasil

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    Walter Fonseca

    1997-10-01

    Full Text Available INTRODUÇÃO: O uso de aspiração a vácuo (AV no tratamento do aborto incompleto é prática bastante difundida em países desenvolvidos. Vários estudos nesses países indicam que o uso da técnica de aspiração manual a vácuo (AMV pode conservar recursos do sistema de saúde e melhorar a qualidade do tratamento do aborto. No Brasil, o uso da AMV é procedimento de rotina nos hospitais e clínicas privados. Entretanto, na maioria dos hospitais da rede pública é utilizada somente a técnica de dilatação e curetagem (D&C. METODOLOGIA: Foram utilizados métodos de avaliação rápida para estimar a variação do custo médio do tratamento e duração da estadia hospitalar, em um grupo de 30 pacientes admitidas com aborto incompleto em hospital público de Fortaleza, CE (Brasil. Participantes foram alocadas, randomicamente, em um dos dois grupos de tratamento investigados (AMV ou D&C. RESULTADOS E CONCLUSÕES: Os resultados sugerem que o uso da AMV, em substituição a D&C, no tratamento do aborto incompleto, pode reduzir em até 41% o custo médio do tratamento e em 77% o tempo médio de hospitalização. Recomenda-se a realização de estudos confirmatórios, como também que se aprofunde os conhecimentos sobre a percepção do aborto e seu tratamento por parte do pessoal de saúde e da população feminina.

  4. AVALIAÇÃO DA ROTULAGEM, CARACTERIZAÇÃO QUÍMICA, FÍSICO-QUÍMICA E REOLÓGICA DE NÉCTARES DE UVA COMERCIALIZADOS NA CIDADE DE FORTALEZA - CE

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    Alessandra Pinheiro de Góes CARNEIRO

    2013-04-01

    Full Text Available No Brasil, há diferentes tipos de bebidas de frutas, dentre elas pode-se citar o suco e o néctar, que, de acordo com a legislação brasileira diferem entre si na quantidade de polpa de fruta que é adicionada em cada formulação, sendo o néctar a bebida com menor proporção de polpa de fruta. O objetivo do presente trabalho foi avaliar diferentes marcas comerciais de néctar de uva quanto às características de rotulagem, propriedades químicas, físico-químicas e reológicas. O estudo foi realizado com dezesseis amostras de néctares de uva de diferentes marcas, sendo doze “tradicionais” e quatro “lights”, as quais foram obtidas em supermercados da cidade de Fortaleza, Ceará. Foram realizadas análises de pH, sólidos solúveis, acidez titulável, relação sólidos solúveis/acidez titulável, açúcares totais e redutores e ácido ascórbico. Apesar de 15% das amostras não apresentarem a denominação de venda do produto e 57% não continham o conteúdo líquido e o lote de fabricação descritos no rótulo, pode-se afirmar, que de um modo geral, os parâmetros analisados estão de acordo com o exigido pela legislação brasileira quanto à rotulagem e as características químicas e físico-químicas. Quanto às características reológicas, os néctares de uva classificam-se como fluidos newtonianos.

  5. O direito da concorrência no Mercosul: o Protocolo de Fortaleza e as relações entre Brasil e Argentina

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    Araújo, Clayton Vinicius Pegoraro de

    2012-01-01

    Este trabalho analisa o tema das relações jurídico-econômicas entre Brasil e Argentina, tomando como base a questão do Direito Econômico Internacional, sob o prisma da concorrência regional. São abordados fatos históricos implicados na direção das negociações para a atual gestão das negociações, bem como uma análise das legislações dos respectivos atores econômicos, inclusive sob a ótica da teoria dos jogos. Finalmente, será buscado o entendimento sobre a aplicabilidade do ...

  6. Avaliação de Programas de Gestão por Competências: um Estudo em Organizações da Região Metropolitana de Fortaleza - CE

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    Bianca Patrícia Lopes Rocha

    2012-11-01

    Full Text Available Normal 0 21 false false false PT-BR X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabela normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} A avaliação de programas e a gestão por competências têm sido adotados por grandes empresas no Brasil e são estudados aqui segundo diversas abordagens, passando pelos campos epistemológico, teórico, morfológico e técnico da metodologia quadripolar. No pólo epistemológico são apresentados os aspectos gerais da epistemologia de Bachelard, a epistemologia da gestão por competências e da avaliação de programas. O pólo teórico congrega uma revisão conceitual de algumas abordagens teóricas da gestão por competências: teoria da psicometria, teoria baseada nos recursos (VBR, teoria do capital humano, abordagem americana, abordagem francesa, pós-qualificação taylorismo-fordismo e dialética da competência. No pólo morfológico descrevem-se alguns modelos de gestão por competências e de avaliação de programas educacionais. No pólo técnico buscou-se a confirmação dos pressupostos com base nos pólos anteriores. Através de um survey com aplicação de questionários aos gestores de pessoas e áreas envolvidas no desenvolvimento e/ou implantação dos programas de gestão por competências na região metropolitana de Fortaleza-CE, pode-se concluir que as

  7. Intensidad exportadora e interacción entre fortalezas del marketing mix: un análisis basado en redes neuronales artificiales || Export Intensity and Interaction between Marketing Mix: An Analysis based on Artificial Neural Networks

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    Gutiérrez-Villar, Belén

    2014-12-01

    Full Text Available Entre los factores determinantes de la actuación exportadora de las empresas, numerosos estudios han subrayado la relevancia del mix de marketing. Generalmente, la mayoría de los estudios abordan el análisis de las variables centrado en estrategias específicas, en particular fenómenos de estandarización-adaptación. El presente estudio analiza si existe un efecto interactivo de fortalezas generadas en las diferentes variables del mix de marketing que pueda asociarse a diferentes perfiles exportadores. Para ello, se ha empleado el algoritmo Extreme Learning Machine (ELM dentro de los procedimientos Perceptrón Multicapa (MLP de Redes Neuronales Artificiales (RNA. Asimismo, el análisis se combina con un novedoso procedimiento de análisis de sensibilidad desarrollado ad hoc para este estudio, el cual permite conocer los efectos individuales e interactivos de las variables predictoras sobre la variable dependiente en problemas clasificatorios de naturaleza dicotómica. Los resultados obtenidos nos permiten corroborar la existencia de los efectos interactivos postulados, poniendo al mismo tiempo de manifiesto la utilidad de las RNA y del análisis de sensibilidad propuesto para la investigación en el área de marketing y, específicamente, para los estudios de internacionalización de empresas. || Among the determining factors in export activity, many studies have highlighted the relevance of the marketing mix. Generally, the majority of them use a variables analysis to focus on specific strategies, in particular, standardized-adaptations. This paper analyzes if there is an interactive effect of strength generated in different variables of the marketing mix that can be associated with different export profiles. The Extreme Learning Machine (ELM algorithm has been used within the Multilayer Perceptron (MLP of Artificial Neural Networks (ANN. In addition, the analyses combine a novel approach for sensitivity analysis developed ad hoc for this

  8. El castillo de Portilla (Zambrana, Álava: Origen y significado de una fortaleza plenomedieval en territorio alavés (siglos XI-XII

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    Jose Luis Solaun Bustinza, Agustín Azkarate Garai-Olaun

    2016-01-01

    Las recientes investigaciones arqueológicas efectuadas en esta fortaleza han permitido conocer mejor su origen y significado. Las evidencias apuntan a que la actual fortaleza, construida entre principios del siglo XI y mediados del siglo XII, estuvo bajo titularidad real, aunque fue gestionada por importantes aristocracias locales y regionales, siendo testigo de las complejas relaciones entre el poder público y privado y, obviamente, de la multiplicidad de funciones que esta fortaleza pudo desempeñar.

  9. Fortalezas internas y externas de adolescentes que no consumen alcohol

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    Mydori Harumi Téllez Vásquez

    2017-06-01

    Full Text Available Introducción: el consumo de alcohol en adolescentes mexicanos es un problema de salud pública, que requiere enfocar los esfuerzos de investigación en la prevención. Este estudio se basa en el modelo de fortalezas de Benson (2007, quien plantea que los jóvenes poseen recursos individuales y contextuales que promueven un desarrollo positivo y limitan el involucramiento en conductas de riesgo. Objetivo: analizar las diferencias en fortalezas internas y externas entre estudiantes de secundaria que presentan diferentes niveles de consumo de alcohol. Metodo: participaron 990 estudiantes de secundarias públicas de la Ciudad de México, 52.1% mujeres y 47.9% hombres, de una media de edad de 13.6 años. Se evaluaron siete fortalezas internas y siete externas. Resultados: 53.9% de los participantes nunca ha usado alcohol, 28.3% sí lo ha consumido pero nunca o sólo una vez ha abusado, y 17.8% reportó haber abusado del consumo en el último mes. Hombres y mujeres que no han usado alcohol reportaron puntajes significativamente más altos en fortalezas internas. En el caso de las fortalezas externas, los jóvenes sin consumo fueron los que obtuvieron puntajes más altos, excepto en amigos saludables (tanto hombres como mujeres, y en apoyo y supervisión del padre (hombres. Conclusiones: los resultados contribuyen a la explicación del consumo de alcohol en jóvenes y proporcionan elementos para el diseño de intervenciones, pues señalan las fortalezas que deben promoverse para evitar que los jóvenes consuman alcohol a edades tempranas.

  10. Fortalezas Personales y Hábitos de Salud en Estudiantes Universitarios de Ciencias del Movimiento Humano

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    Kristy Barrantes-Brais

    2015-01-01

    Full Text Available El propósito de este estudio fue caracterizar y relacionar las fortalezas personales y los hábitos de salud en estudiantes universitarios de carreras de Ciencias del Movimiento Humano. Un total de 234 estudiantes (137 hombres y 97 mujeres brindaron información sobre fortalezas personales, hábitos de sueño y consumo de sustancias. Se analizaron diferencias entre grupos y correlaciones entre variables. Los resultados sugieren que las fortalezas predominantes son gratitud, curiosidad, integridad, bondad y liderazgo; se encuentran diferencias según género y carrera. Predominan los hábitos saludables, los cuales se asocian con algunas fortalezas. Los estudiantes presentan fortalezas que denotan preocupación por los demás y posibilidades de expresar y ser sensibles a las emociones. Los hábitos saludables y su relación con algunas fortalezas parecen evidenciar coherencia con las características de la unidad académica a la que pertenecen.

  11. AVALIAÇÃO DA ROTULAGEM, CARACTERIZAÇÃO QUÍMICA, FÍSICO-QUÍMICA E REOLÓGICA DE NÉCTARES DE UVA COMERCIALIZADOS NA CIDADE DE FORTALEZA - CE

    OpenAIRE

    Alessandra Pinheiro de Góes CARNEIRO; David Araujo ABREU; Denise Josino SOARES; Eveline de Alencar COSTA; Larissa Morais Ribeiro da SILVA; Lívia Carvalho BARBOSA; Paulo Henrique Machado de SOUSA; Raimundo Wilane de FIGUEIREDO

    2013-01-01

    No Brasil, há diferentes tipos de bebidas de frutas, dentre elas pode-se citar o suco e o néctar, que, de acordo com a legislação brasileira diferem entre si na quantidade de polpa de fruta que é adicionada em cada formulação, sendo o néctar a bebida com menor proporção de polpa de fruta. O objetivo do presente trabalho foi avaliar diferentes marcas comerciais de néctar de uva quanto às características de rotulagem, propriedades químicas, físico-químicas e reológicas. ...

  12. Niveles de bienestar espiritual y de fortaleza relacionados con la salud en adultos mayores

    OpenAIRE

    Martha V. Whetsell; Keville Frederickson; Paulina Aguilera; Juan Luis Maya

    2005-01-01

    Este estudio investigó la relación entre niveles de bienestar espiritual y fortaleza relacionada con la salud en una población mexicana de adultos mayores de 65 años. El proyecto se basó en el Modelo de Adaptación de Roy, el Modelo de Pollock (fortaleza relacionada con la salud) y el de Reed (bienestar espiritual). El diseño fue descriptivo correlacional, la muestra fue probabilística y se hizo al azar. La muestra (n=160) tuvo un nivel de significancia de 0,05 para una di...

  13. Fish community composition, seasonality and abundance in Fortaleza Lagoon, cidreira

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    Lúcia Cabral Schifino

    2004-09-01

    Full Text Available The Fortaleza Lagoon belongs to the Southern Tramandaí subsystem, formed by lagoons disposed linearly on the north-south direction (30º 08’S, 50º 13’W. The objective of this study was to describe some aspects related to the composition of the fish community of Fortaleza Lagoon. Samples were collected monthly from November 1998 to October 1999. The specimens were captured at four previously determined points in the lagoon, and classified in five orders, 12 families and 22 species. Cyphocharax voga, Hyphessobrycon luetkenii, Oligosarcus jenynsii, Oligosarcus robustus and Loricariichthys anus were more abundant species. Amongst the sampled species only two could not be characterised as freshwater species: Centropomus sp (marine and Lycengraulius grossidens (estuarine. The ichthyofauna of the lagoon was predominantly composed by constant species.A Planície Costeira do Rio Grande do Sul é formada por uma série de corpos d’água, dispostos em seqüência ao longo da costa. A lagoa da Fortaleza pertence ao subsistema lagunar Tramandaí-Sul que é composto por lagoas, dispostas linearmente no sentido norte-sul. O do presente estudo teve como objetivo descrever alguns aspectos relacionados à composição da comunidade de peixes da Lagoa da Fortaleza. As amostragens foram realizadas, mensalmente, no período de novembro de 1998 a outubro de 1999. Os exemplares foram capturados em 4 pontos da lagoa previamente determinados e classificados em 5 ordens, 11 famílias e 22 espécies. As espécies Cyphocharax voga, Hyphessobrycon luetkenii, Oligosarcus jenynsii, Oligosarcus robustus e Loricariichthys anus mostraram-se as mais abundantes. Entre as espécies coletadas apenas duas não caracterizam espécies de água doce: Centropomus sp (marinha and Lycengraulius grossidens (estuarina. A ictiofauna da lagoa caracterizou-se por uma predominância de espécies constantes.

  14. Niveles de bienestar espiritual y de fortaleza relacionados con la salud en adultos mayores

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    Martha V. Whetsell

    2005-01-01

    Full Text Available Este estudio investigó la relación entre niveles de bienestar espiritual y fortaleza relacionada con la salud en una población mexicana de adultos mayores de 65 años. El proyecto se basó en el Modelo de Adaptación de Roy, el Modelo de Pollock (fortaleza relacionada con la salud y el de Reed (bienestar espiritual. El diseño fue descriptivo correlacional, la muestra fue probabilística y se hizo al azar. La muestra (n=160 tuvo un nivel de significancia de 0,05 para una diferencia media de 1,6, un efecto de tamaño y potencia de 80. Los instrumentos fueron la Escala de Fortaleza Relacionada con la Salud, y la de Bienestar Espiritual, y presentaron un Alfa de 0,801 y 0,973 respectivamente. Se utilizó la Regresi ón Lineal Múltiple para investigar el efecto de las variables demográficas sobre el bienestar espiritual. La edad media de los sujetos fue de 73,9 (DE=4,3, el 62,5% fueron mujeres. El coeficiente de correlación entre el bienestar espiritual y la fortaleza relacionada con la salud fue significativo, los niveles más altos de bienestar espiritual tienen niveles igualmente elevados de fortaleza relacionada con la salud. El sexo, la edad, la educación y el estado civil mostraron una relación positiva con los niveles de bienestar espiritual (p<,005. Las mujeres mostraron un nivel mayor de bienestar espiritual que los hombres.

  15. O perfil das puérperas adolescentes atendidas em uma maternidade de referência de Fortaleza-Ceará Perfil de las madres adolescentes atendidas en una maternidad de referencia en Fortaleza-Ceará The profile of the puerperal adolescents treated in a referenced maternity in Fortaleza-Ceará

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    Náira de Oliveira Caminha

    2012-09-01

    Full Text Available Objetivou-se caracterizar o perfil das puérperas adolescentes de uma maternidade de Fortaleza-CE. Estudo descritivo, transversal e quantitativo, realizado no Alojamento Conjunto da Maternidade Escola Assis Chateaubriand, no período de março a julho de 2009, com 200 adolescentes. Os dados foram obtidos por meio de entrevistas. A maioria apresentava idade entre 15 e 19 anos (91,0%, residia na capital (78,0%, vivia com o pai de seu filho (64,5%, tinha baixa escolaridade (55,5%, considerava-se parda (61,5% e dona-de-casa (53%. Quanto aos métodos anticonceptivos, 73,5% usaram algum método antes de engravidar, 65,5% desejaram a gravidez e 32,5% planejaram a gravidez. Durante a gravidez, 18,5% tiveram internação hospitalar e 82,5% não utilizavam drogas. Torna-se relevante a função do enfermeiro como educador em saúde para orientá-las e torná-las autônomas na promoção de sua saúde sexual.El objetivo de ese estudio fue caracterizar el perfil de las madres adolescentes atendidas en una maternidad de referencia en Fortaleza, Ceará. Estudio descriptivo, transversal y cuantitativo, llevado a cabo en el alojamiento conjunto de la Maternidade Escola Assis Chateaubriand, de marzo a julio de 2009, con 200 adolescentes. Los datos fueron obtenidos por medio de entrevistas. La mayoría tenía entre 15 y 19 años (91,0%, residía en la capital (78,0%, vivía con el padre de su hijo (64,5%, tenía bajo nivel de educación (55,5%, consideraba a sí misma como mixta (61,5% y era ama de casa (53%. Sobre los métodos anticonceptivos, el 73,5% utilizaron algún método antes del embarazo, el 65,5% deseaban embarazar y el 32,5% planearon el embarazo. Durante este periodo, el 18,5% fueron hospitalizados y el 82,5% no consumía drogas. Es importante el papel de la enfermera como educadora de salud para guiarlos y hacerles autónomas en la promoción de la salud sexual.This study aimed to characterize the profile of puerperal adolescents in a maternity ward

  16. PERFIL GINECO-OBSTÉTRICO E REALIZAÇÃO DO EXAME DE PREVENÇÃO POR PROSTITUTAS DE FORTALEZA

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    ANA IZABEL OLIVEIRA NICOLAU

    2008-01-01

    Full Text Available Estudio descriptivo, cuantitativo cuyo objetivo fue identificar el perfil ginecológico y obstétrico de prostitutas de Fortaleza-CE. Fueron entrevistadas 81 prostitutas del centro de Fortaleza, a través de un formulario de entrevista estructurado con cuestiones sobre su historia sexual y obstétrica, en octubre de 2005. Los datos fueron tabulados en el programa estadístico SPSS, versión 11.0 y analizados de acuerdo con la literatura, disponibles a través de las tablillas estadísticas. Se verificó iniciación sexual precoz, entre 13 y 15 años. La edad del primer ciclo menstrual coincidió con el inicio de la vida sexual en el 46,9% de la muestra. Se pudo observar que el 95,1% de las mujeres ya habían estado embarazadas y el 49,4% habían hecho aborto; el 95,1% habían realizado el examen de prevención de cáncer de cuello del útero, siendo que el 51,9% lo había realizado hacía menos de un año. Se concluyó que las prostitutas presentaron características ginecológicas y obstétricas preocupantes en lo que concierne a las DST/SIDA, el cáncer de cuello de útero y de mama, a pesar de confirmar acceso a los servicios de salud.

  17. Comparação temporal das prevalências de asma e rinite em adolescentes em Fortaleza, Brasil Prevalences of asthma and rhinitis among adolescents in the city of Fortaleza, Brazil: temporal changes

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    Maria de Fátima Gomes de Luna

    2013-04-01

    Full Text Available OBJETIVO: Descrever as prevalências de asma e rinite em adolescentes de 13-14 anos de idade em Fortaleza (CE em 2010 e compará-las com as prevalências obtidas em um inquérito em 2006-2007. MÉTODOS: Estudo transversal envolvendo uma amostragem probabilística de 3.015 e 3.020 adolescentes, respectivamente, em 2006-2007 e 2010, utilizando o protocolo do International Study of Asthma and Allergies in Childhood. RESULTADOS: Na comparação entre os dois períodos, não houve diferenças significativas em relação a sibilos cumulativos, asma ativa, quatro ou mais crises de sibilos no último ano, prejuízo do sono por sibilos > 1 noite/semana e crises limitando a fala. Em 2010, houve um aumento significativo na prevalência de sibilos após exercícios, tosse seca noturna e asma diagnosticada (p OBJECTIVE: To describe the prevalences of asthma and rhinitis in adolescents (13-14 years of age in the city of Fortaleza, Brazil, in 2010, comparing the results with those obtained in a prevalence survey conducted in 2006-2007. METHODS: This was a cross-sectional study involving probabilistic samples of 3,015 and 3,020 adolescents in surveys conducted in 2006-2007 and 2010, respectively. The International Study of Asthma and Allergies in Childhood protocol was used on both occasions. RESULTS: Comparing the two periods, there were no significant differences regarding cumulative wheezing, active asthma, four or more wheezing attacks within the last year, sleep disturbed by wheezing more than one night per week, and speech-limiting wheezing. The prevalences of exercise-induced wheezing, dry cough at night, and physician-diagnosed asthma were significantly higher in 2010 than in the 20062007 period (p < 0.01 for all. The prevalence of physician-diagnosed rhinitis was significantly lower in 2010 (p = 0.01, whereas there were no significant differences between the two periods regarding cumulative rhinitis, current rhinitis, and rhinoconjunctivitis. In both

  18. As cidades da juventude em Fortaleza

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    Francisco José Gomes Damasceno

    2007-06-01

    Full Text Available A cidade de Fortaleza é apresentada a partir da experiência juvenil, de suas organizações, de seus deslocamentos e de suas formas específicas de apropriação da cidade.Desta observação delineio a idéia de Experiência Musical e de Deslocamentos Geo-Estéticos na cidade. As organizações e experiências juvenis são tomadas como reveladoras de outros possíveis e suas movimentações como manifestação do "novo" urbano contemporâneo.The city of Fortaleza is presented through the juvenile experience of its organizations, its displacements and its specific city appropriation ways. It is from this observation that I take the idea of Musical Experience and the Geo-esthetic Displacements of the city. The organizations and juvenile experiences are considered to be revealing of other possibilities and their movements, as a manifestation of the "new" contemporary urbanity.

  19. Prevalência de sobrepeso e obesidade em escolares da rede pública e particular da cidade de fortaleza

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    Fernando Alberto Ramirez de Paula

    2014-12-01

    Full Text Available Objetivo: Verificar a prevalência de sobrepeso e obesidade em escolares da rede pública e particular da cidade de Fortaleza-CE. Métodos: Pesquisa observacional, transversal, desenvolvida no período de agosto a novembro de 2012, com amostra composta por 217 crianças na faixa etária entre 7 e 11 anos. Avaliaram-se os parâmetros antropométricos de massa corporal, estatura e índice de massa corporal (IMC. Realizou-se a análise dos dados com o auxílio do Predictive Analytics SoftWare. Resultados: Encontrou-se a média da idade das crianças de 8,1 anos. Na massa corporal, verificou-se que as crianças da escola particular tiveram média superior, sendo no masculino de 36,0±11,70 kg e no feminino de 33,59±8,97 kg, enquanto na escola pública o masculino foi de 27,05±05 kg e o feminino, 28,06±7,73 kg (p<0,05. Para o IMC, constatou-se, no ensino público, estado de eutrofia em 66 (81,5% crianças do sexo masculino e 65 (72,2% do feminino; por outro lado, verificou-se maior prevalência de crianças com sobrepeso e obesidade em alunos da escola particular, sendo 12 (50,0% do masculino e 10 (45,5% do feminino. Conclusão: Encontrou-se alta prevalência de crianças acometidas com excesso de peso e obesidade tanto em escolas da rede de ensino particular como pública, apontando maiores valores para as crianças da rede particular de ensino.

  20. Correlação entre índice de massa corporal e circunferência da cintura em crianças Correlación entre índice de masa corporal y circunferencia de la cintura en niños Correlation between body mass index and waist circumference in children

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    Marta Maria Coelho Damasceno

    2010-10-01

    Full Text Available OBJETIVO: Estabelecer uma correlação entre a circunferência da cintura e o Índice de Massa Corporal (IMC na determinação do excesso de peso e distribuição de gordura em crianças de escolas públicas de Fortaleza - CE. MÉTODOS: Trata-se de um estudo transversal, realizado em 12 escolas da rede da pública da cidade de Fortaleza- CE. Participaram 727 crianças de ambos os sexos, com idade variando entre 6 a 11 anos. A coleta de dados ocorreu de março a junho de 2008. RESULTADOS: Os resultados do inquérito mostraram que, de acordo com o IMC,11,4% das crianças encontravam-se em sobrepeso, 6,6% eram obesas e 30,9% apresentaram obesidade central. CONCLUSÃO: Nem toda criança obesa apresentava obesidade central, demonstrando que uma só medida antropométrica não é eficaz na determinação do padrão de gordura na infância.OBJETIVO: Establecer una correlación entre la circunferencia de la cintura y el Índice de Masa Corporal (IMC en la determinación del exceso de peso y distribución de grasa en niños de escuelas públicas en Fortaleza - CE. MÉTODOS: Se trata de un estudio transversal, realizado en 12 escuelas de la red pública de la ciudad de Fortaleza- CE. Participaron 727 niños de ambos sexos, con edad que varió de 6 a 11 años. La recolección de datos ocurrió de marzo a junio de 2008. RESULTADOS: Los resultados de la encuesta mostraron que, de acuerdo con el IMC, 11,4% de los niños se encontraban con sobrepeso, 6,6% eran obesos y 30,9% presentaron obesidad central. CONCLUSIÓN: No todos los niños obesos presentaban obesidad central, demostrando que solo una medida antropométrica no es eficaz para determinar el estándar de adiposidad en la infancia.OBJECTIVE: To establish a correlation between waist circumference and Body Mass Index (BMI and to determine overweight and fat distribution in children from public schools in Fortaleza - CE. METHODS: This is a cross-sectional study conducted in 12 public schools in the city

  1. Risco nutricional entre gestantes adolescentes Riesgo nutricional entre gestantes adolescentes Nutritional risks among pregnant teenagers

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    Glayriann Oliveira Belarmino

    2009-01-01

    Full Text Available OBJETIVOS: Identificar o acometimento de risco nutricional em gestantes adolescentes; averiguar hábitos alimentares; e verificar percepções destes quanto à importância de nutrição adequada na gravidez. MÉTODOS: Estudo de campo realizado no Centro de Desenvolvimento Familiar, em Fortaleza-CE, com 40 gestantes adolescentes. A avaliação nutricional foi efetuada com o auxílio do "Gráfico de acompanhamento nutricional da gestante" e os hábitos alimentares foram conferidos pela "Técnica de alimentação diária habitual". RESULTADOS: Vinte (50% adolescentes apresentaram peso adequado, 11(27,5% baixo peso e 9 (22,5% sobrepeso. Prevaleceram massas, carnes, gorduras, doces e baixo consumo de frutas e verduras; 33 (82,5% tinham a percepção de que a alimentação deve ser "diferente" na gravidez e 28 (70% afirmaram ter feito mudanças nos hábitos alimentares no pré-natal. CONCLUSÃO: O acometimento de risco nutricional entre adolescentes gestantes se revelou em situações de sobrepeso, baixo peso, dietas pouco diversificadas e desinformação.OBJETIVOS: Identificar el riesgo nutricional en gestantes adolescentes; averiguar hábitos alimenticios; y verificar percepciones de éstos en cuanto a la importancia de una nutrición adecuada en el embarazo. MÉTODO: Se trata de un estudio de campo realizado en el Centro de Desarrollo Familiar, en Fortaleza-CE, con 40 gestantes adolescentes. La evaluación nutricional se llevó a cabo con el auxilio del "Gráfico de acompañamiento nutricional de la gestante" y los hábitos alimenticios fueron conferidos por la "Técnica de alimentación diaria habitual". RESULTADOS: Veinte (50% adolescentes presentaron peso adecuado, 11(27,5% bajo peso y 9 (22,5% sobre peso. Prevalecieron pastas, carnes, grasas, dulces y bajo consumo de frutas y verduras; 33 (82,5% tenían la percepción de que la alimentación debe ser "diferente" durante el embarazo y 28 (70% afirmaron haber realizado cambios en los h

  2. Airborne fungi causing respiratory allergy in patients from Fortaleza, Ceará, Brazil Fungos anemófilos causando alergia respiratória em pacientes na cidade de Fortaleza, Ceará

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    Everardo Albuquerque Menezes

    2004-04-01

    diagnóstico e o tratamento da alergia em todo o mundo, o que provavelmente persistirá por muitos anos ainda. O objetivo deste trabalho foi fazer uma relação entre os fungos anemófilos e a alergia respiratória (asma e rinite de pacientes da cidade de Fortaleza, Ceará. Primeiro foi feita uma pesquisa dos fungos alergênicos dispersos no ar atmosférico da cidade de Fortaleza. Os extratos fúngicos alergênicos foram feitos a partir dos dez bolores mais predominantes do ar de Fortaleza, usando bicarbonato de sódio. Foram feitos testes da puntura em cinqüenta pacientes com alergia respiratória (asma e rinite e dez pessoas saudáveis (sem alergia respiratória. O teste positivo foi feito com histamina e o teste negativo com uma preparação de bicarbonato de sódio. Os fungos predominantes no ar da cidade de Fortaleza foram: Aspergillus, Penicillium, Curvularia, Cladosporium, Mycelia sterilia, Fusarium, Rhizopus, Drechslera, Absidia e Alternaria. Como demonstrado pelo teste da puntura: três extratos fúngicos (Aspergillus, Alternaria e Drechslera foram positivos em todos os pacientes; dois (Penicillium e Curvularia foram positivos em trinta e cinco pacientes; dois (Cladosporium e Mycelia sterilia foram positivos em trinta pacientes; e três (Rhizopus, Absidia e Fusarium foram positivos em nove pacientes. Todos os testes controles foram negativos. Todos os dez fungos anemófilos mais predominantes isolados no ar podem provocar reações nos testes cutâneos em indivíduos com alergia respiratória na cidade de Fortaleza.

  3. Hanseníase: subnotificação de casos em Fortaleza - Ceará, Brasil Leprosy: underreported cases in Fortaleza - Ceará, Brazil

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    Mônica Cardoso Façanha

    2006-08-01

    Full Text Available FUNDAMENTO: Visando à eliminação da hanseníase como problema de saúde pública no Brasil, o Ministério da Saúde tem como meta alcançar taxa de prevalência de menos de 1 caso/10.000 habitantes, estimulando o diagnóstico e tratamento dos casos e reduzindo a disseminação da doença. O Sistema de Informação de Agravos de Notificação (SINAN foi designado para acompanhar o cumprimento dessa meta. OBJETIVO: Verificar a proporção dos casos de hanseníase diagnosticados nas unidades de saúde do município de Fortaleza que foi notificada ao SINAN. MÉTODOS: Foi feita a identificação dos casos diagnosticados e registrados nas unidades de saúde e notificados à Secretaria Municipal de Saúde de Fortaleza (SMSF entre 2002 e 2004 por meio da comparação nominal entre os registros locais e os registros do SINAN. RESULTADOS: Foram identificados e resgatados para o SINAN 411 casos que haviam sido diagnosticados e não notificados (17,5% do total informado de 15 (64% das unidades que informaram pelo menos um caso no período. Cerca 342 casos constavam nos livros e estavam notificados no banco de dados do SINAN das unidades de atendimento, mas não compunham o banco de dados do SINAN da SMSF. CONCLUSÕES: Constatou-se subnotificação de 14,9% dos casos detectados, fato que precisa ser prevenido para que os indicadores reflitam a real freqüência dos casos no município.BACKGROUND: To eliminate leprosy as a public health problem in Brazil, the Ministry of Health aims to achieve a prevalence rate of less than 1.0 case/10,000 inhabitants, encouraging diagnosis and treatment of patients and reducing dissemination of the disease. The National Disease Notification System (SINAN is in charge of verify the elimination plan results. OBJECTIVE: To verify the proportion of leprosy cases diagnosed and reported to SINAN by health centers of the city of Fortaleza, in Ceará, Northeastern region of Brazil. METHODS: Comparison between cases registered in

  4. Jouer pour apprendre : est-ce bien sérieux ? Réflexions théoriques sur les relations entre jeu (vidéo et apprentissage

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    Vincent Berry

    2011-05-01

    Full Text Available Cet article propose une réflexion théorique sur les relations entre jeu (vidéo et éducation. A partir d’une revue de la littérature et sur la base d’une recherche consacrée à l’étude des joueurs de « jeux de rôles en ligne massivement multijoueurs », ce texte met en avant la complexité dans les sciences de l’éducation à penser le jeu comme espace d’apprentissage et propose quelques éléments théoriques pour aborder cette problématique.

  5. Determinants of tuberculosis transmission and treatment abandonment in Fortaleza, Brazil.

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    Harling, Guy; Lima Neto, Antonio S; Sousa, Geziel S; Machado, Marcia M T; Castro, Marcia C

    2017-05-25

    Tuberculosis (TB) remains a public health problem, despite recent achievements in reducing incidence and mortality rates. In Brazil, these achievements were above the worldwide average, but marked by large regional heterogeneities. In Fortaleza (5th largest city in Brazil), the tuberculosis cure rate has been declining and treatment abandonment has been increasing in the past decade, despite a reduction in incidence and an increase in directly observed therapy (DOT). These trends put efforts to eliminate tuberculosis at risk. We therefore sought to determine social and programmatic determinants of tuberculosis incidence and treatment abandonment in Fortaleza. We analyzed sociodemographic and clinical data for all new tuberculosis cases notified in the Notifiable Diseases Information System (SINAN) from Fortaleza between 2007 and 2014. We calculated incidence rates for 117 neighborhoods in Fortaleza, assessed their spatial clustering, and used spatial regression models to quantify associations between neighborhood-level covariates and incidence rates. We used hierarchical logistic regression models to evaluate how individual- and neighborhood-level covariates predicted tuberculosis treatment abandonment. There were 12,338 new cases reported during the study period. Case rates across neighborhoods were significantly positively clustered in two low-income areas close to the city center. In an adjusted model, tuberculosis rates were significantly higher in neighborhoods with lower literacy, higher sewerage access and homicide rates, and a greater proportion of self-reported black residents. Treatment was abandoned in 1901 cases (15.4%), a rate that rose by 71% between 2007 and 2014. Abandonment was significantly associated with many individual sociodemographic and clinical factors. Notably, being recommended for DOT was protective for those who completed DOT, but associated with abandonment for those who did not. Low socioeconomic status areas have higher tuberculosis

  6. Juventude e cidadania: uso das mídias digitaus da ONG Aldeia, em Fortaleza

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    Denise Maria Cogo

    2013-03-01

    Full Text Available O artigo analisa os processos de comunicação cidadã tecidos porjovens que atuam na associação Aldeia, em Fortaleza, Ceará. O marco teórico da pesquisa abrange os estudos sobre movimentos sociais, mídias digitais e comunicação cidadã. Selecionamos, como resultado da pesquisa, três aspectos dos usos das tecnologias pelos jovens do Aldeia: 1 a ausência de uma maior criticidade na leitura dos meios ; 2 a complementaridade entre as mídias analógicas e as digitais; e 3 a demanda por profissionalização.

  7. Revitalização de centros urbanos no Brasil: uma análise comparativa das experiências de Vitória, Fortaleza e São Luís

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    Tarcísio R. Botelho

    2005-08-01

    Full Text Available O estudo dos processos de revitalização urbana tem ocupado um importante lugar na compreensão da dinâmica urbana contemporânea dada a freqüência e a abrangência que eles têm conhecido. Nas últimas décadas, estes processos têm se caracterizado por incorporarem a “cultura” como conteúdo diferenciador das várias experiências de revitalização. Neste artigo, avalio o lugar do patrimônio cultural nas experiências recentes de revitalização dos centros de Vitória (ES, de Fortaleza (CE e de São Luís (MA, enfocando sobretudo o papel do poder público para obter êxito na implantação das políticas de revitalização. Considero que os processos de revitalização aqui enfocados apontam para articulações inovadoras entre os atores envolvidos, na medida em que atingem conjuntos urbanos históricos diferentemente valorizados e passam por governos locais diferentemente comprometidos com os processos de revitalização dos centros urbanosThe study of urban revitalization processes has taken pride of place in the studies of contemporary urban dynamics, given their frequency and broad scope. In the last few decades, they have stood out, among a variety of revitalization processes, for their ability to incorporate “culture” as a differentiating content. In this article, I evaluate the part the heritage has played in the latest attempts at revitalizing the historical areas of Vitória (ES, Fortaleza (CE and São Luís (MA, placing special emphasis on the role of the public power to enforce successful revitalization policies. In my opinion, the revitalization processes included in this paper point to innovative articulations among the players involved in them, once they comprise urban historical complexes with items of different values and are subject to local governments more or less committed to the revitalization of urban centers

  8. PREVALÊNCIA DE ENTEROPARASITAS NA REGIÃO METROPOLITANA DE FORTALEZA, CEARÁ

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    Marcos Adelino ALMEIDA FILHO

    2017-12-01

    Full Text Available As enteroparasitoses são problemas de saúde pública associadas às condições socioeconômicas, principalmente pela falta de conhecimento de bons hábitos sanitários da população. Nesse ínterim, o presente trabalho objetivou a analisar prevalência de enteroparasitas em amostras fecais provenientes de pacientes da rede pública e privada da Região Metropolitana de FortalezaCE. A pesquisa se caracteriza em um estudo transversal, conduzido no período de abril/2014 a novembro/2016, com indivíduos provenientes da área metropolitana de Fortaleza, de ambos os sexos e diferentes faixas etárias. Do total de 6.596 amostras fecais analisadas de pacientes, 840 (12,73% apresentaram-se positivas para diversas formas parasitárias, prevalecendo os protozoários, as espécies Endolimax nana (55,14%, Entamoeba coli (21,33% e Giardia lamblia (13,95% foram as mais frequentes. Seguido de nematelmintos como Ascaris lumbricoides (1,32%, Trichocephalus trichiurus (0,66%, Enterobius vermiculares (0,33% e os platelmintos foram Hymenolepis nana (0,66%, Fasciola hepatica (0,11% e Taenia sp. (0,11%. O número de casos positivos analisados nesta pesquisa, induz à necessidade da elaboração de políticas públicas, além de programas de educação e conscientização, principalmente para as populações carentes, com o intuito de amenizar a incidência e os impactos causados por enteroparasitoses. 

  9. Urbanization of visceral leishmaniasis (kala-azar in Fortaleza, Ceará, Brazil Urbanización de la leishmaniasis visceral (kala-azar en Fortaleza, Ceará, Brasil

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    Polianna Lemos Moura Moreira Albuquerque

    2009-10-01

    Full Text Available OBJECTIVES: Visceral leishmaniasis (VL is endemic in Brazil and appears to occur in epidemic form in the state of Ceará. Few epidemiologic studies have been done on VL in this state. The aim of this study is to establish the epidemiologic pattern of VL in Fortaleza City and to show how urbanization has occurred in recent years. METHODS: Data were obtained from the State Health Department of Fortaleza, Ceará, and included all cases of VL registered in Fortaleza from January 2001 to December 2006. RESULTS: There were a marked increase and an elevated incidence of cases of VL in urban areas. Children and young people were the most affected group. CONCLUSION: The epidemic occurrence of VL in the region must convince authorities to adopt more adequate policies of disease control.OBJETIVOS: La leishmaniasis visceral (LV es endémica en Brasil y suele ocurrir en forma epidémica en el estado de Ceará. Se han realizado pocos estudios epidemiológicos sobre LV en ese estado. El objetivo de este estudio es establecer el patrón epidemiológico de LV en la ciudad de Fortaleza y mostrar cómo ha ocurrido la urbanización de esta enfermedad en los últimos años. MÉTODOS: Los datos se obtuvieron del Departamento Estatal de Salud de Fortaleza, Ceará, y abarcaron todos los casos de LV registrados en esa ciudad entre enero de 2001 y diciembre de 2006. RESULTADOS: Se observó un marcado incremento y una elevada incidencia de LV en las áreas urbanas. Los niños y jóvenes fueron los grupos más afectados. CONCLUSIÓN: La ocurrencia de epidemias de LV en la región debe convencer a las autoridades para que adopten políticas más apropiadas para el control de esta enfermedad.

  10. RE-TRATOS DA JUVENTUDE NA CIDADE DE FORTALEZA: DIREITOS HUMANOS E INTERVENÇÕES MICROPOLÍTICAS

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    João Paulo Pereira Barros

    2016-07-01

    Full Text Available Este artigo visa analisar processos de criminalização e extermínio de jovens em Fortaleza, capital brasileira com maior índice de homicídios desses segmentos, e dar visibilidade a práticas micropolíticas frente a tais aviltamentos de direitos humanos na periferia da cidade. Será utilizado o caso da cidade de Fortaleza para discutir relações entre estado neoliberal e recrudescimento da criminalização e do extermínio de jovens. Em um segundo momento, serão apresentadas experiências institucionais desenvolvidas por um projeto de extensão ligado ao Departamento de Psicologia da Universidade Federal do Ceará (UFC, em territórios de Fortaleza com expressivos registros de letalidade juvenil. Destacam-se experiências de criação de dispositivos de análise coletiva da violência urbana envolvendo jovens, na forma de oficinas e rodas de conversa realizadas entre 2015 e 2016, junto a moradores e trabalhadores sociais inseridos em um dos principais equipamentos da política de juventude fortalezense. Será apresentada também a participação das ações extensionistas em atos públicos voltados à problematização do encarceramento e do homicídio de adolescentes e jovens. Conclui-se o artigo apontando a proficuidade dessas análises e experiências para a formação em psicologia, articulando temas como violência, exclusão social e modos de subjetivação. Palavras-chave: Juventude; violência urbana; direitos humanos; psicologia.   This article aims to analyze processes of criminalization and young extermination in Fortaleza, Brazilian capital with the highest murder rate in these segments, and give visibility to micropolitical front interventions such defilements of human rights on the outskirts of the city. relations between neoliberal state and recrudescence of criminalization and extermination of young people will be discussed, emphasizing its brands in Fortaleza. In a second stage, interventions will be presented around the

  11. La medida de las fortalezas psicológicas en adolescentes (VIA-Youth): relación con clima familiar, psicopatología y bienestar psicológico

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    Giménez Hernández, Montserrat

    2011-01-01

    El presente estudio tiene como principal objetivo profundizar en el estudio de las características de los adolescentes. Para ello, en el eje de la investigación, se analizarán las propiedades psicometrícas del VIA-Y (Values in Action for Young), un cuestionario dirigido a evaluar las fortalezas humanas diseñado por Peterson y Park (2003) con una muestra de adolescentes españoles y se estudiarán las relaciones entre estas fortalezas y distintos conceptos psicológicos relacionado...

  12. Determinants of tuberculosis transmission and treatment abandonment in Fortaleza, Brazil

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    Guy Harling

    2017-05-01

    Full Text Available Abstract Background Tuberculosis (TB remains a public health problem, despite recent achievements in reducing incidence and mortality rates. In Brazil, these achievements were above the worldwide average, but marked by large regional heterogeneities. In Fortaleza (5th largest city in Brazil, the tuberculosis cure rate has been declining and treatment abandonment has been increasing in the past decade, despite a reduction in incidence and an increase in directly observed therapy (DOT. These trends put efforts to eliminate tuberculosis at risk. We therefore sought to determine social and programmatic determinants of tuberculosis incidence and treatment abandonment in Fortaleza. Methods We analyzed sociodemographic and clinical data for all new tuberculosis cases notified in the Notifiable Diseases Information System (SINAN from Fortaleza between 2007 and 2014. We calculated incidence rates for 117 neighborhoods in Fortaleza, assessed their spatial clustering, and used spatial regression models to quantify associations between neighborhood-level covariates and incidence rates. We used hierarchical logistic regression models to evaluate how individual- and neighborhood-level covariates predicted tuberculosis treatment abandonment. Results There were 12,338 new cases reported during the study period. Case rates across neighborhoods were significantly positively clustered in two low-income areas close to the city center. In an adjusted model, tuberculosis rates were significantly higher in neighborhoods with lower literacy, higher sewerage access and homicide rates, and a greater proportion of self-reported black residents. Treatment was abandoned in 1901 cases (15.4%, a rate that rose by 71% between 2007 and 2014. Abandonment was significantly associated with many individual sociodemographic and clinical factors. Notably, being recommended for DOT was protective for those who completed DOT, but associated with abandonment for those who did not

  13. Precariedade do trabalho e da vida de catadores de recicláveis em Fortaleza, CE

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    Regina Heloisa Maciel

    2011-01-01

    Full Text Available The article discusses life and work conditions of young, middle-aged and elderly street pickers, focusing on experiences of childhood, adolescence and actual job. Eight workers, between 20 and 85 years of age, men and women, were interviewed. The data indicates that: all had a childhood and adolescence marked by lack of resources and emotional support, early insertion in precarious work and low education; the current work maintains the previous experiences of precarious living and working conditions and lack of prospects of inclusion in the formal work market; young workers express feelings of hopelessness and failure; middle-aged and older workers managed to build a safety net through associations of recyclable collectors; all participants reported they have to deal with bigotry revealed in the eyes "of others" for whom a collector is "garbage", "beggar, vulture", a possible "thief". Finally, all believe the work is critical to their and their families’ survival and is a "right" job.

  14. TERRITORIALIDADES DA CRIMINALIDADE NO BAIRO JARDIM DAS OLIVEIRAS - FORTALEZA-CE

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    Fabiano Lucas da Silva Freitas

    2010-01-01

    the settler's territoriality process and how this territoriality is expressed in a settlement like the Tiracanga Logradouro, which is fragmented in Ceará's semiarid. The materialization of this study was based on on-fi eld studies and the dialogues with peasant settlers, seeking to record the widest variety of aspects related to the peasant's origins, their fight for land, their organizational situation and land use. For this purpose, participation in meetings with associations and groups of peasants was programmed and interviews with some of them in their residences, as well as with some peasant leaders were organized. Throughout the text, we search to overcome the division between formal and informal knowledge with regards to the speech of researched individuals. Bibliographic research on the subject was elaborated through books, theses, dissertations and the collection of data at the INCRA. The study revealed the organizational and settlement use strategies practiced by the peasants, including discussions on the use of their land parcel, in which agreements and disagreements amongst settlers appeared with regards to the adoption of this land exploitation model. It was concluded that families articulate the use of their land parcel based on familiar unit and the family nucleus and regain collective use as a strategy for family unit reproduction.

  15. Precariedade do trabalho e da vida de catadores de recicláveis em Fortaleza, CE

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    Regina Heloisa Maciel

    2011-10-01

    Full Text Available The article discusses life and work conditions of young, middle-aged and elderly street pickers, focusing on experiences of childhood, adolescence and actual job. Eight workers, between 20 and 85 years of age, men and women, were interviewed. The data indicates that: all had a childhood and adolescence marked by lack of resources and emotional support, early insertion in precarious work and low education; the current work maintains the previous experiences of precarious living and working conditions and lack of prospects of inclusion in the formal work market; young workers express feelings of hopelessness and failure; middle-aged and older workers managed to build a safety net through associations of recyclable collectors; all participants reported they have to deal with bigotry revealed in the eyes "of others" for whom a collector is "garbage", "beggar, vulture", a possible "thief". Finally, all believe the work is critical to their and their families' survival and is a "right" job.

  16. Asistencia a mujeres embarazadas con VIH/sida en Fortaleza, Ceará, Brasil

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    Karla Santana Azevedo Damasceno

    2013-01-01

    Full Text Available El objetivo de este estudio es analizar los resultados perinatales de las medidas profilácticas adoptadas en la prevención de la transmisión vertical del VIH. Se realizó una investigación de las historias clínicas de 168 mujeres con VIH y sus recién nacidos en una maternidad pública de Fortaleza, estado de Ceará, entre 2005 y 2009. Los datos se obtuvieron entre los meses de marzo y septiembre de 2010 y fueron analizados con el programa SPSS 10.0. Las embarazadas que conocían el diagnóstico en forma previa al embarazo tuvieron una rápida atención que permitió una terapia antirretroviral eficaz y un mayor número de controles (p<0,05. Se administró terapia antirretroviral al 97,6% de las embarazadas, triple esquema al 88,7%; AZT intraparto al 95,2% y AZT oral en jarabe al 100% de los recién nacidos. Predominó la cesárea (92,8% asociada al AZT intraparto al ser cotejada con el parto vaginal (p<0,001. La cesárea proporcionó mayor administración de AZT intraparto.

  17. Cogeneration in Mexico: Weaknesses, Threats, strengths and opportunities; Cogeneracion en Mexico: Debilidades, amenazas, fortalezas y oportunidades

    Energy Technology Data Exchange (ETDEWEB)

    Elizalde Baltierra, Alberto; Garcia Pelaez, Juan [Programa Universitario de Energia, UNAM (Mexico)

    1997-07-01

    In this paper the strategies are formulated and evaluated, taking into account the internal and external aspects of the cogeneration in Mexico that foment their development in the medium term (two or four years). In the formulation of strategies a matrix DAFO (Weaknesses, Threats, Strengths and Opportunities) is employed and in the evaluation is applied the procedure of analytical hierarchical structuring. The future on the cogeneration in the next years will depend on diverse factors, among which can be mentioned: the legal frame; the financial situation of the interested companies; the outsourcing of financing; the prices of the electricity and fuels, as well as their availability, among others. [Spanish] En este trabajo se formulan y evaluan estrategias que, tomando en cuenta los aspectos internos y externos de la cogeneracion en Mexico, fomenten su desarrollo en el mediano plazo (dos o cuatro anos). En la formulacion de estrategias se emplea la matriz DAFO (Debilidades, Amenazas, Fortalezas y Oportunidades) y en la evaluacion se aplica el procedimiento de jerarquizacion analitica. El futuro de la cogeneracion en los proximos anos dependera de diversos factores, entre los que se pueden mencionar: el marco legal; la situacion financiera de las empresas interesadas; las fuentes externas de financiamiento; los precios de la electricidad y de los combustibles, asi como su disponibilidad, entre otros.

  18. Relação usuária-profissional de saúde: experiência de uma mulher homossexual em uma unidade de saúde de referência de Fortaleza Relación usuaria-profesional de salud: experiencia de una mujer homosexual en una unidad de salud de referencia de Fortaleza The health professional-user relationship: experience of a homosexual woman in a renowned Fortaleza health unit

    Directory of Open Access Journals (Sweden)

    Maria Alix Leite de Araújo

    2006-08-01

    Full Text Available A relação usuária-profissional de saúde é essencial para a qualidade do atendimento, especialmente nos serviços de atenção à saúde da mulher, onde a abordagem da sexualidade deve ser objeto de considerada relevância. Tem-se como objetivo descrever a experiência vivenciada por uma mulher homossexual atendida em uma unidade de saúde. Desenvolveu-se um relato de experiência. Em virtude de a revelação da homossexualidade feminina não constituir prática comum nos serviços de saúde, optou-se por um estudo de caso mediante descrição da experiência de atendimento de uma mulher homossexual em uma unidade de saúde de referência de Fortaleza-CE no segundo semestre de 2004. Desenvolveu-se entrevista aberta com a seguinte pergunta norteadora: Fale-me da sua experiência com o atendimento na unidade de saúde. Os dados foram analisados utilizando-se duas categorias temáticas: O atendimento recebido na unidade e a comunicação com o profissional de saúde. Conforme se concluiu, foi possível iniciar uma reflexão sobre a fragilidade das relações interpessoais entre as mulheres homossexuais e os serviços de saúde. Apesar de estas terem acesso ao serviço via setor de ginecologia, o desenvolvimento do processo de comunicação é muito superficial e deixa de elucidar questões importantes do exercício da sexualidade, perdendo-se, conseqüentemente, a oportunidade de desenvolver um trabalho educativo na prevenção das DST e, inclusive, do HIV.La relación usuaria-profesional de salud es esencial para la calidad de la atención, especialmente en los servicios de atención a la salud de la mujer, donde el abordaje de la sexualidad debe ser objeto de considerable relevancia. Se tiene como objetivo describir la experiencia vivenciada por una mujer homosexual atendida en una unidad de salud. Se desarrolló un relato de experiencia. Como la revelación de la homosexualidad femenina no constituye una práctica común en los servicios de

  19. Eje Cafetero: fortaleza minero-industrial y posibilidades agropecuarias

    OpenAIRE

    Duque Escobar, Gonzalo

    2012-01-01

    Fortalezas del Eje Cafetero relacionadas con sus potencialidades agropecuario y valioso inventario minero, que le dan soporte a los elementos fundamenbtales del Plan Industrial Minero y a nuevas opciones de clústeres regionales agropecuarios, en momentos en los que se perfila un crecimiento de la oferta energética local en el oriente caldense y la implementación de modos de transporte más eficientes como la navegación por el río Magdalena.

  20. Determinantes do aborto provocado entre mulheres admitidas em hospitais em localidade da região Nordeste do Brasil

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    Walter Fonseca

    1996-02-01

    Full Text Available Com o objetivo de identificar os determinantes do aborto provocado entre mulheres admitidas por complicações decorrentes dos abortos, nos hospitais-maternidades públicos em Fortaleza, CE (Brasil foram entrevistadas 4.359 pacientes entre 1º de outubro de 1992 e 30 de setembro de 1993. Os dados foram coletados através de questionário estruturado. São apresentados os determinantes dos abortos provocados em 2.084 (48% mulheres classificadas como tendo induzido aborto. Dois terços (66% das mulheres relataram a indução do aborto com o uso isolado do Cytotec(R (misoprostol ou associado a outro meio abortivo. Os resultados indicam que, na população estudada, a indução do aborto é prática comum entre jovens, solteiras (ou que vivem sem um parceiro estável, de baixa paridade, com escolaridade incipiente e não-usuárias de métodos contraceptivos. Recomenda-se a realização de estudos que investiguem os conhecimentos relacionados a percepções, conceitos culturais do aborto, e às razões por que mulheres pobres fracassam na adoção de métodos de planejamento familiar.

  1. Determinantes do aborto provocado entre mulheres admitidas em hospitais em localidade da região Nordeste do Brasil

    Directory of Open Access Journals (Sweden)

    Fonseca Walter

    1996-01-01

    Full Text Available Com o objetivo de identificar os determinantes do aborto provocado entre mulheres admitidas por complicações decorrentes dos abortos, nos hospitais-maternidades públicos em Fortaleza, CE (Brasil foram entrevistadas 4.359 pacientes entre 1º de outubro de 1992 e 30 de setembro de 1993. Os dados foram coletados através de questionário estruturado. São apresentados os determinantes dos abortos provocados em 2.084 (48% mulheres classificadas como tendo induzido aborto. Dois terços (66% das mulheres relataram a indução do aborto com o uso isolado do Cytotec(R (misoprostol ou associado a outro meio abortivo. Os resultados indicam que, na população estudada, a indução do aborto é prática comum entre jovens, solteiras (ou que vivem sem um parceiro estável, de baixa paridade, com escolaridade incipiente e não-usuárias de métodos contraceptivos. Recomenda-se a realização de estudos que investiguem os conhecimentos relacionados a percepções, conceitos culturais do aborto, e às razões por que mulheres pobres fracassam na adoção de métodos de planejamento familiar.

  2. Avaliação da qualidade de amostras comerciais de leite de janaguba (Himatanthus drasticus (Mart. Plumel em Fortaleza – Ceará

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    F.P. SOARES

    Full Text Available RESUMO Os fitoterápicos à base de leite de janaguba (Himatanthus drasticus (Mart. Plumel, usados para o tratamento de câncer, úlcera gástrica e outras doenças, são muito vendidos em mercados públicos de Fortaleza (CE. No entanto, registros mencionam que é comum a troca deste leite por látex de mangabeira (Hancornia speciosa Gomes. O trabalho objetivou avaliar a qualidade físico-química, química e microbiológica de amostras comerciais do leite de janaguba. Dez amostras comerciais foram adquiridas de um mercado de Fortaleza; quatro amostras autênticas de látex de janaguba foram obtidas da chapada do Araripe e uma amostra de látex de mangabeira foi obtida em Paracuru (CE. Foram determinados o aspecto geral, densidade, pH, resíduo seco, volume de sedimentação, perfil cromatográfico e qualidade microbiológica das amostras. Os resultados mostraram elevada contaminação microbiológica nas preparações comerciais e adulteração em seis destas amostras, o que aponta a urgente implantação de uma efetiva farmacovigilância dos fitoterápicos a fim de tornar seu consumo mais seguro e racional.

  3. Importancia de la evaluación psicológica de las fortalezas en niños y adolescentes Adolescents and children strengths psychological assessment importance

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    Isabel María Mikulic

    2006-12-01

    Full Text Available El presente trabajo se propone introducir un área nueva a la evaluación psicológica de niños y adolescentes: el estudio de las fortalezas. En este estudio exploratoriodescriptivo se ha seleccionado una muestra intencional de 44 participantes cuyas edades oscilan entre los 10 y 18 años y que residen en la Ciudad y Provincia de Buenos Aires. Del análisis de las fortalezas correspondientes a la calidad de vida percibida por niños y adolescentes en coincidencia con las provenientes de sus recursos sociales y sucesos de vida positivos experimentados, es posible afirmar que tanto el contexto familiar como el escolar son proveedores del apoyo de "al menos una persona significativa". Contar con un "otro" que estimula y gratifica afectivamente ha sido considerado por los participantes como una fortaleza, tanto al evaluar el contexto familiar como el escolar. Se ha confirmado la utilidad de incluir al contexto en la evaluación psicológica infantil por ser el entorno familiar y escolar fuentes de fortalezas y factores protectores en los niños y adolescentes estudiados.Present study aims to introduce a new psychological assessment perspectiva when assessing children and adolescents: assessment of human strengths. This is an exploratory-descriptive study based on an intentional sample formed by 44 participants, aged between 10 and 18 years and residing in Buenos Aires (Capital and Province. There is a coincidence between strengths belonging to perceived quality of life and those referring to social resources and positive life events in children and adolescents; in both cases family and school context provide at least one supporting significant person. Attachment to someone who provides unconditional support is considered one of the most important strengths found. Utility of including context evaluation in children and adolescents assessment has been demonstrated as family and school contexts have proved to be important strengths sources.

  4. [Medical theories and urban management: Fortaleza's 1877-79 drought].

    Science.gov (United States)

    Costa, Maria Clélia Lustosa

    2004-01-01

    Down through the nineteenth century, new medical theories on the origin of disease influenced the norms and regulations that controlled the population's behavior and the urban space. The present study discusses the ideas, medical practices , and administrative initiatives adopted during the 1877-79 drought in Fortaleza, capital of Ceará province. The drought was accompanied by a smallpox epidemic, along with the increased migration of sertão dwellers to the capitol. The city lacked a public service network capable of meeting the needs of this new population, which took up lodgings on the city and periphery. The municipal administration endeavored to implement the recommendations of physicians based on modern principles of hygienization. Through an analysis of reports by the provincial presidents and by public health inspectors, the study intends to show how these medical theories influenced the practices of urban reorganization at a moment of public emergency.

  5. The Informal Working in Fortaleza City: Between Urban Sanitation, Public Policy and Philosophy (1880-1910

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    Daniel Camurça Correia

    2016-06-01

    Full Text Available With this papper we aim to analyze the ways in which some people as self-employed, workers of the streets, such as porters, sellers and beggars, articulated his days in the city of Fortaleza, in the end of nineteenth century, between the political and regulatory joints of Ceará province. Despite of several attempts by the political, medical and establish intellectual high society discourses and practices against the massive presence of this kind of sel-employed, the disjointed work and the sick body of the popular, these, increasingly, were present through the work carried out, whether in times of drought, is the period of the belle époque of Fortaleza. Through the analysis of the sources, discusses to typify poor and informal workers, at the time when the economic elite of Fortaleza wanted to establish commercial modernity in this city. For the development of this article, we used literature and bibliographical research. Was performed in addition to the survey data of the time as another primary sources (Acting Secretary of the Business of Interior of Ceará Province Report, Match Proceedings of the Municipal Stewardship of Fortaleza, Corres- pondence Minutes of city Hall of Fortaleza; and secondary sources (Postures Code of the City of Fortaleza; and chronic books and besides memories of the city of Fortaleza.

  6. Suggestions to leak prevention in Fortaleza's natural gas piping system; Sugestoes para a prevencao de vazamentos de gas natural canalizado na regiao metropolitana de Fortaleza

    Energy Technology Data Exchange (ETDEWEB)

    Teles, Marcus de Barros [Agencia Reguladora de Servicos Publicos Delegados do Estado do Ceara (ARCE), Fortaleza, CE (Brazil)

    2004-07-01

    Leaks are the bigger problem in health, safety and environmental when the subject is gas distribution piping systems. Specially in high density human regions, like in the majority districts of Fortaleza, safety have to be the higher priority to the gas company responsible for the gas distribution piping systems. Leaks are able to cause accidents or incidents, depending on the circumstances which they happen. In order to be control the situation and overcome the luck factor, leaks must be previously avoided by the application of some security requirements. This paper present some suggestions to natural gas leak prevention in the Fortaleza's metropolitan region pipeline systems. First, the piping systems are analysed, observing the risk regions. Then, safety actions and basic requirements to avoid pipe corrosion are presented in order to improve safety in the gas distribution piping systems of Fortaleza's metropolitan region. (author)

  7. Seroprevalence of toxoplasmosis in Fortaleza, Ceará, Brazil

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    REY Luís C.

    1999-01-01

    Full Text Available A serological survey of Toxoplasma gondii infection in population groups in Fortaleza, Brazil, was conducted, in order to identify seroprevalence rates according to age and risk factors associated with acquired infection. A Toxoplasma IgG-antibody enzyme immunoassay (Sanofi Pasteur Diagnostics, Marnes la Coquette, France was employed to assess the immunity. Public day-care centers and schools were randomly selected, while three large antenatal clinics and maternity units were choosen by its importance. Population groups and results of 997 blood tests were: 227 children (mean age 3.8 years, 22.8% seropositives; 584 students (mean 11.4 years, 58.4%, and pregnant and postpartum women (mean 24 years, 71.5% seropositives (p < 0.001. Of 256 participants reporting close contact with cats, 59.8% were seropositive, in contrast with 51% seropositives without contact (relative risk 1.17; 95% confidence interval 1.04-1.33; p = 0.01. Having three or more siblings at home was related to higher seroprevalence in children and students (relative risk 1.39; 95% confidence interval 1.21-1.60; p < 0.01. In conclusion, toxoplasmosis seroprevalence showed a rapid increase during the first ten years of life, in association with close contact with cats and larger households, probably related to inappropriate hygiene and child-care practices.

  8. Estado nutricional de lactentes em áreas periféricas de Fortaleza

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    SOARES Nadia Tavares

    2000-01-01

    Full Text Available O presente estudo foi realizado com a finalidade de caracterizar a prevalência da má nutrição entre crianças menores de um ano vinculadas ao Fundo Cristão para Crianças em dois bairros periféricos de Fortaleza: Presidente Kennedy e Álvaro Weine. Desnutrição protéico-energética, obesidade e anemia ferropriva foram diagnosticadas através dos seguintes indicadores: peso ao nascer +2 desvios-padrão da mediana de referência do National Center for Health Statistics, hemoglobina < 11 g/dl, hematócrito < 32%, volume corpuscular médio <72 fl e hemoglobina corpuscular média < 24 pg. O peso ao nascer foi obtido através da entrevista domiciliar, enquanto que as demais medidas antropométricas e as amostras de sangue foram colhidas em uma das unidades do Fundo Cristão para Crianças, seguindo os procedimentos técnicos recomendados. Das 110 crianças catalogadas, 96 foram pesadas e medidas e 75 fizeram o exame de sangue. A análise dos dados revelou 7% de baixo peso ao nascer, 10% de desnutrição crônica, 8% de obesidade e 60% de anemia. Possivelmente, a dieta que as crianças receberam contribuiu para o comprometimento nutricional encontrado. Parece essencial a realização de mais estudos sobre prática alimentar nestas comunidades.

  9. Estado nutricional de lactentes em áreas periféricas de Fortaleza

    Directory of Open Access Journals (Sweden)

    Nadia Tavares SOARES

    2000-08-01

    Full Text Available O presente estudo foi realizado com a finalidade de caracterizar a prevalência da má nutrição entre crianças menores de um ano vinculadas ao Fundo Cristão para Crianças em dois bairros periféricos de Fortaleza: Presidente Kennedy e Álvaro Weine. Desnutrição protéico-energética, obesidade e anemia ferropriva foram diagnosticadas através dos seguintes indicadores: peso ao nascer +2 desvios-padrão da mediana de referência do National Center for Health Statistics, hemoglobina < 11 g/dl, hematócrito < 32%, volume corpuscular médio <72 fl e hemoglobina corpuscular média < 24 pg. O peso ao nascer foi obtido através da entrevista domiciliar, enquanto que as demais medidas antropométricas e as amostras de sangue foram colhidas em uma das unidades do Fundo Cristão para Crianças, seguindo os procedimentos técnicos recomendados. Das 110 crianças catalogadas, 96 foram pesadas e medidas e 75 fizeram o exame de sangue. A análise dos dados revelou 7% de baixo peso ao nascer, 10% de desnutrição crônica, 8% de obesidade e 60% de anemia. Possivelmente, a dieta que as crianças receberam contribuiu para o comprometimento nutricional encontrado. Parece essencial a realização de mais estudos sobre prática alimentar nestas comunidades.

  10. Pressão arterial de crianças e adolescentes de uma escola pública de Fortaleza - Ceará Presión arterial de niños y adolescentes de una escuela pública de Fortaleza-Ceará Blood pressure of children and teenagers from a public school in Fortaleza-Ceará

    Directory of Open Access Journals (Sweden)

    Thelma Leite de Araujo

    2007-12-01

    Full Text Available OBJETIVO: O objetivo do estudo foi analisar a evolução dos valores da pressão arterial sistólica (PAS, da pressão arterial diastólica (PAD e das medidas antropométricas de crianças e adolescentes que apresentaram alteração da pressão arterial em uma primeira avaliação. MÉTODOS: Estudo longitudinal, realizado nos meses de outubro de 2004 a dezembro de 2005, em uma escola pública de Fortaleza, Ceará. Cento e cinqüenta e um indivíduos com idades entre seis e dezessete anos foram avaliados e acompanhados por um período de um ano. RESULTADOS: As variáveis idade, escolaridade, peso, altura, índice de massa corporal, perímetro da cintura, perímetro do quadril, circunferência do braço e prega subescapular estiveram correlacionadas positiva e significativamente com os valores da PAS e da PAD. Houve diferença de mediana entre as variáveis: sexo, grau de parentesco para hipertensão arterial, fumante passivo com a PAS e com a PAD. CONCLUSÃO: Observou-se que a PAS e a PAD das crianças e dos adolescentes diminuíram ao longo das avaliações.OBJETIVO: En este estudio se tuvo como objetivo analizar la evolución de los valores de la presión arterial sistólica (PAS, de la presión arterial diastólica (PAD y de las medidas antropométricas de niños y adolescentes que presentaron alteración de la presión arterial en una primera evaluación. MÉTODOS: Se trata de un estudio longitudinal, realizado en los meses de octubre del 2004 a diciembre del 2005, en una escuela pública de Fortaleza, Ceará. Ciento cincuenta y un individuos con edades entre seis y diecisiete años fueron evaluados y acompañados por el período de un año. RESULTADOS: Las variables edad, escolaridad, peso, altura, índice de masa corporal, perímetro de la cintura, perímetro de la cadera, circunferencia del brazo y pliegue subescapular estuvieron correlacionadas positiva y significativamente con los valores de la PAS y de la PAD. Hubo diferencia de mediana

  11. THE ALIEN STREET TREES OF FORTALEZA (NE BRAZIL: QUALITATIVE OBSERVATIONS AND THE INVENTORY OF TWO DISTRICTS

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    Marcelo Freire Moro

    2011-01-01

    Full Text Available Public tree planting is important for cities. It produces shadow, brings well-being for humans, and supports the urban fauna. But the cultivation of exotic plants can also be responsible for dissemination of invasive species. This paper aims to evaluate public tree planting in Fortaleza, Ceará state, in northeastern Brazil. From 2005 to 2009, qualitative observations on tree composition in the city were made. In 2006, a detailed inventory of all public trees was carried out in two districts of Fortaleza. Jointly, 2075 individuals grew here. Most of the tree species planted in Fortaleza are aliens, some are even invasive. The massive use of exotic plants in Fortaleza has negative consequences for the environmental education. People do not know the regional native trees, and thus are not concerned about the local biodiversity conservation. In spite of the huge amounts of native species available for ornamental purposes in the Brazilian flora, the street trees of Fortaleza are overwhelmingly aliens.

  12. Avaliação do grau de dependência nas atividades de vida diária em idosos da cidade de Fortaleza - Ceará Evaluation of dependence degree in daily activities of life in elder of Fortaleza - Ceará Level of independence in activities of daily life in low-income elderly from Fortaleza - Ceará

    Directory of Open Access Journals (Sweden)

    Maria Josefina da Silva

    2006-06-01

    Full Text Available OBJETIVO: a finalidade deste estudo foi avaliar o grau de dependência de idosos de baixa renda para as Atividades de vida diária (AVDs. MÉTODOS: estudo transversal, junto a 385 idosos residentes em bairros periféricos da cidade de Fortaleza - CE, caracterizados como pessoas pobres, com baixa ou nenhuma escolaridade, do sexo feminino e viúvas. O instrumento consistiu de formulário contendo 11 AVDs com gradientes de dependência "sem restrição"(0, "com restrição - pouca (1 e muita (2" e "não consegue"(3. Cada AVD continha três variações de complexidade para sua realização. RESULTADOS: os resultados revelaram que as atividades mais comprometidas foram "alimentação e hidratação", "locomoção", "atividades realizadas na casa" em especial as consideradas pesadas, "lazer e recreação". CONCLUSÃO: conclui-se que há um forte comprometimento da qualidade de vida dos idosos frente às restrições identificadas e aos parcos recursos institucionais, comunitários e familiares que dispõem para compensar as dependênciasOBJETIVO: la finalidad de este estudio fue evaluar el grado de dependecia de ancianos de bajo recursos para las Actividades de vida diaria (AVDs. MÉTODO: se trata de un estudio tranversal, dessarrollado con 385 ancianos residentes en barrios periféricos de la ciudad de Fortaleza - CE, caracterizados como personas pobres, con baja o ninguna escolaridad, viudas, del sexo femenino. El instrumento consistió de un formulario que contenía 11 AVDs con grados de dependencia "sin restricción" (0, "con restricción - poca (1 y mucha (2" y "no consigue"(3. Cada AVD contenía tres variaciones de complejidad para su realización. RESULTADOS: los resultados revelaron que las actividades más comprometidas fueron "alimentación e hidratación", "locomoción", "actividades realizadas en la casa" en especial las consideradas pesadas, "Ocio y recreación". CONCLUSIÓN: se concluye que hay un fuerte compromiso de la calidad de vida

  13. FATORES DE RETENÃÃO E DESLIGAMENTO DE PESSOAS NUMA EMPRESA DE SUPERMERCADOS EM FORTALEZA.

    OpenAIRE

    GalbÃria MourÃo Machado

    2005-01-01

    Essa dissertaÃÃo tem como objetivo a anÃlise dos fatores de retenÃÃo e desligamento de pessoas numa empresa de supermercados em Fortaleza, a partir do conhecimento das causas dos desligamentos de pessoas na empresa, bem como da investigaÃÃo dos fatores de influÃncia na decisÃo das pessoas de permanecerem na empresa. A relevÃncia do estudo deve-se ao aumento da competitividade no setor de supermercados em Fortaleza e pelas novas necessidades exigidas em suas estratÃgias admin...

  14. Fortalezas y Guerra Santa : un estudio comparado de algunos aspectos de funcionalidad en las fronteras de la Cristiandad

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    J. Santiago Palacios Ontalva

    2001-01-01

    Full Text Available En torno a las fortalezas se desarrollaron muchos de los episodios bélicos del secular enfrentamiento medieval entre el Islam y la Cristiandad. En las fronteras orientales y occidentales de estos dos mundos, la arquitectura militar se convirtió en objetivo prioritario de la guerra, al tiempo que constituían bases seguras desde las que operar contra el enemigo. El trabajo que presentamos nos permite acercarnos a la compleja realidad funcional de estos castillos a la vanguardia de la Guerra Santa, recurriendo para ello a diversos ejemplos de la realidad fronteriza en la Península Ibérica y en Tierra Santa.In connection witti thíe fortresses were developed many warlike episodes of the secular medieval confrontation among tfie Islam and the Christendom. In the western and eastern frontiers of these two worlds, the militan/ architecture was converted in a high-priority objective of the war, to the time that constituted secure bases from those which to opérate against the enemy. The work that we present allow us an approach to the complex functional reality of these castles to the forefront of the Holy War, appealing for this to various examples of the Holy Land and the Iberian península border reality.

  15. ASSOCIAÇÃO ENTRE ADESÃO AO TRATAMENTO E TIPOS DE COMPLICAÇÕES CARDIOVASCULARES EM PESSOAS COM HIPERTENSÃO ARTERIAL

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    Daniele Braz da Silva Lima

    2016-01-01

    Full Text Available Estudio transversal y analítico, realizado en 23 Centros de Salud Familiar en Fortaleza-CE, Brazil. El objetivo fue verificar la asociación entre adhesión al tratamiento anti-hipertensivo y los tipos de complicaciones cardiovasculares presentes en personas con hipertensión arterial. La muestra estuvo compuesta por 182 pacientes hipertensos registrados en el Sistema de Gestão Clínica de Hipertensão Arterial e Diabetes Mellitus da Atenção Básica que aceptaron responder a un formulario estructurado y a un instrumento para medir la adhesión. Entre los pacientes hipertensos cuestionados, 62,0% fueron mujeres, 66,9% ancianos, 52,2% pacientes con ingresos familiares variando entre 1,5 a 4 salarios mínimos, 61,5% poseían entre 1 y 8 años de escolaridad y 60,4% residían en hogares habitados por dos a cuatro personas. Las complicaciones prevalecientes fueron accidente cerebrovascular (37,9% seguido de infarto del miocardio (20,3%. La adhesión al tratamiento estuvo presente en un 52,0% y fue asociada al accidente cerebrovascular (p<0,001; OR=3,048; IC95%=1,633-5,681. Los resultados obtenidos demuestran la necesidad de un cambio en el comportamiento de los pacientes hipertensos, adoptando medidas de promoción de la salud para prevenir nuevas complicaciones cardiovasculares.

  16. Comparison among structural characteristics of Ce{sub 1-x}Cu{sub x}O{sub 2} nanocatalysts obtained by two methods of distinct synthesis; Comparacao entre as caracteristicas estruturais dos nanocatalisadores Ce{sub 1-x}Cu{sub x}O{sub 2} obtidos por dois metodos de sintese distintos

    Energy Technology Data Exchange (ETDEWEB)

    Neiva, L.S.; Bispo, A.; Santos, P.T.A.; Costa, A.C.F.M.; Gama, L., E-mail: lucianna@dema.ufcg.edu.b [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Dept. de Engenharia de Materiais; Mascarenhas, A.J.S. [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Inst. de Quimica

    2009-07-01

    The objective this work is to synthesize nano catalysts Ce{sub 1-x}Cu{sub x}O{sub 2} type by the synthesis methods of the combustion reaction and Pechini. The value of the concentration (x) of the element dope (Cu) varies between 0,1 and 0,5 mols. It intends evaluate that form the synthesis method influences in the physical structural characteristics of this material. nano catalysts were characterized by ray- X diffraction. The results showed nano catalysts formation with a formed structure for the most part by the phase CeO{sub 2}, as it was expected, since this is the hostess matrix of the element dope (Cu). Nano catalysts obtained by the method Pechini presents crystallinity larger deg, according with patterns of ray-X. Thus, it was concluded that synthesis employee method the kind in the methodology, as well as the value of the concentration of the element dope has influence on the final structural characteristics of the developed material. (author)

  17. Observations and model calculations of an additional layer in the topside ionosphere above Fortaleza, Brazil

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    B. Jenkins

    1997-06-01

    Full Text Available Calculations using the Sheffield University plasmasphere ionosphere model have shown that under certain conditions an additional layer can form in the low latitude topside ionosphere. This layer (the F3 layer has subsequently been observed in ionograms recorded at Fortaleza in Brazil. It has not been observed in ionograms recorded at the neighbouring station São Luis. Model calculations have shown that the F3 layer is most likely to form in summer at Fortaleza due to a combination of the neutral wind and the E×B drift acting to raise the plasma. At the location of São Luis, almost on the geomagnetic equator, the neutral wind has a smaller vertical component so the F3 layer does not form.

  18. De olho nos muros: itinerÃrio do graffiti em Fortaleza

    OpenAIRE

    Lara Denise Oliveira Silva

    2014-01-01

    This paper has been themed graffiti in the city of Fortaleza and the ramifications of this practice between places, "inside" and "outside" of the landscape scenes that bring those experiences. It is possible define graffiti like figurative images, drawings, letters and names made with spray paint of various colors on walls, bridges, telephone boxes, among other bases, that make up the landscape of large and medium cities, here and abroad. Seen as a marginal activity in the recent past in Braz...

  19. Youth and citizenship: usage of digital media at the NGO Aldeia, in Fortaleza

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    Denise Cogo

    2013-06-01

    Full Text Available The article examines the citizen communication processestissues by young working in association Aldeia, in Fortaleza, Ceará. Theresearch is theoretical studies of social movements, digital media and citizencommunication. Selected as a result of the research, three aspects of the uses oftechnology by Aldeia young participants: 1 the absence of greater criticality inreading the media; 2 the complementarity between analog and digital media;and 3 the demand for professionalism

  20. CIDADE E QUESTÃO SOCIAL NO CAPITALISMO: em cena, Fortaleza, a Miami do nordeste

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    Aurineida Maria Cunha

    2008-01-01

    Full Text Available This article analyzes the genesis of the mercantile process in the cities, approaching the main urban transformations and their social subjects emphasizing the Brazilian urbanization aspects, specifically in the city of Fortaleza. Fortaleza was chosen as the researched city due to its ́ contradictions and transformations in the last two decades. The capital of the Ceará state has gone through different urban interventions, which contributed to alter its ́ historical image of being a poor, underdeveloped metropolis, to being perceived as a modern, structured city with leisure, culture and natural beauties, susceptible to be sold through local, national and international city marketing. Considering the official political speech modernizing the city would make it possible to decrease poverty; however, the Brazilian city of Fortaleza continues to present critical social indexes. This article also considers the historical construction of their citizen ́s city rights, analyzing the denial of their right to the city, showing that in the Brazilian society the citizens’ juridical equality is only theoretical because contradictorily, social inequality continues to be perceived. This article ends with a discussion over the (im possibility of equality concretization in capitalism due to its ́ logic being the whole population equality denial.

  1. Las fortalezas en personas mayores como factor que aumenta el bienestar

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    Encarnación Ramírez-Fernández

    2015-08-01

    Full Text Available En las últimas décadas se ha incrementado el estudio de las fortalezas psicológicas como factor que afecta al bienestar. Éstas pueden ser consideradas como un subconjunto de rasgos de personalidad a los que se otorga un valor moral, definiéndose como cualidades naturales que las personas están intrínsecamente motivada a utilizar porque aumentan la calidad de vida. Las investigaciones demuestran que actúan como factores de protección y prevención de la psicopatología y de los problemas de conducta en las diferentes etapas evolutivas. Hay fortalezas que son más relevantes en personas mayores y su entrenamiento estaría dirigido a influir sobre el comportamiento y el funcionamiento emocional con el objetivo de aumentar la satisfacción con la vida. En el presente trabajo se analizan las fortalezas que predominan en adultos mayores y se propone un programa de intervención para potenciarlas con la finalidad de mejorar su salud y calidad de vida. Se trata de una propuesta novedosa ya que, hasta el momento, las intervenciones en este ámbito han ido encaminadas a paliar diferentes problemas tanto de manera aislada como complemento de terapias de tipo más tradicional pero no como prevención de la aparición de trastornos habituales en edades avanzadas.

  2. La investigación en comunicación en España: Debilidades, amenazas, fortalezas y oportunidades

    Directory of Open Access Journals (Sweden)

    2018-07-01

    Full Text Available Este artículo presenta las estrategias metodológicas, los resultados y un análisis crítico del proyecto de investigación nacional MapCom «El sistema de investigación en España sobre prácticas sociales de Comunicación, Mapa de Proyectos, Grupos, Líneas, Objetos de estudio y Métodos». Se ofrecen los resultados obtenidos de las dos primeras fases del proyecto de investigación en el conjunto del país y muestra total seleccionada de los objetos de estudio, tesis doctorales y proyectos de investigación. Se realiza un análisis específico de variables descriptivas asociadas a género, objetos de estudio, financiación, metodologías más presentes, así como un análisis comparado entre proyectos de investigación y tesis doctorales desde una perspectiva de los objetos de estudio y las metodologías implementadas. El trabajo se contextualiza con un análisis comparativo de la investigación en Ciencias Sociales y Humanidades en el mismo periodo analizado en España. Se hace un análisis de las debilidades, amenazas, fortalezas y oportunidades que han sido detectadas y se ofrecen recomendaciones orientadas a desarrollar un «Plan de Acción Estratégico para la Investigación Competitiva en Comunicación». El análisis concluye con la constatación de las semejanzas entre los objetos de estudio, pero también de las diferencias entre los objetivos de las investigaciones cuando se comparan tesis doctorales y proyectos de investigación en el periodo analizado. Se lleva a cabo igualmente un análisis comparativo de las 12 universidades con mayor relevancia en España, con el objeto de detectar diferencias, similitudes y patrones de investigación en grupos de investigación, doctorados asociados y universidades.

  3. “ELES NASCEM PARA MORRER”: UMA ANÁLISE PSICOSSOCIAL DA PROBLEMÁTICA DOS HOMICÍDIOS DE JOVENS EM FORTALEZA

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    João Paulo Pereira Barros

    2017-10-01

    Full Text Available Dados relativos à questão da violência urbana envolvendo jovens permitem considerar a escala de homicídios desse segmento um dos principais dispositivos de controle social de populações e territórios pauperizados e estigmatizados, tornando-se um dos principais desafios ético-político no cenário brasileiro. A cidade de Fortaleza dispõe de indicadores preocupantes no que concerne ao número de homicídios envolvendo segmentos juvenis, apresentando maior índice de homicídios na adolescência (IHA entre as capitais brasileiras. Diante disso, este estudo objetiva problematizar o fenômeno dos homicídios de jovens na cidade de Fortaleza sob o ponto de vista psicossocial, tomando-o como um analisador das implicações das relações de poder e dos modos de subjetivação contemporâneos no cotidiano das margens urbanas brasileiras. A problematização se desenvolverá em diálogos da Psicologia Social com autores como Foucault, Deleuze, Guattari e Agamben. São postos em análise processos de sujeição de juventudes pobres no Brasil pela sua associação com o risco e a violência, bem como os processos psicossociais produtores de jovens “indignos de vida” a quem se atribui a pecha de “envolvidos”.

  4. MEMÓRIAS NARRATIVAS DO PROJETO MULHERES DE FORTALEZA: IGUALDADE DE GÊNERO E INCLUSÃO SOCIAL

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    Júlio César Ferreira Lima

    2017-03-01

    Full Text Available No Brasil, a abordagem por gênero revela entraves para inclusão feminina. Mesmo sendo a participação feminina maior que a masculina na aquisição de educação formal, mulheres são discriminadas em relação à inserção no mercado de trabalho. O Projeto Mulheres de Fortaleza (PMF, desenvolvido desde 2007 com mulheres em situação de vulnerabilidade, visa o aumento no nível de escolaridade, diminuição da exclusão econômica e conscientização dos direitos de cidadão. O objetivo geral do trabalho foi compreender a percepção das participantes das duas primeiras turmas acerca do PMF. Em específico foi preciso identificar interpretações sobre inserção e participação nas atividades e detectar ações para melhor aplicabilidade. O trabalho se caracterizou como um estudo de caso exploratório com abordagem qualitativa, a partir da interpretação de depoimentos orais de 26 mulheres. Foi aplicado o método indutivo para se chegar a uma conclusão ampla sobre a eficácia do Projeto. Concluiu-se que entre os pontos positivos estavam discussões sobre cidadania para uma melhor consciência de direitos e deveres, e a aprovação das atividades. Contudo, os resultados também apontaram pontos críticos de melhoria, sugeridos com bastante propriedade pelas participantes.

  5. EFECTO DE LAS DESIGUALDADES SOCIOECONÓMICAS EN LA MORTALIDAD DE LA CIUDAD DE FORTALEZA, CEARÁ, BRASIL DURANTE EL AÑO 2007

    Directory of Open Access Journals (Sweden)

    Danila Carneiro de Oliveira

    2010-01-01

    Full Text Available Fundamentos: Brasil es un ejemplo para estudiar la situación de la pobreza y sus determinantes, ya que posee una gran parte de la población pobre de América Latina y presenta gran potencial para erradicar esta pobreza. El presente trabajo pretende mostrar la asociación entre la mortalidad y el índice de pobreza en la ciudad de Fortaleza, capital del estado Ceará. Métodos: Estudio ecológico transversal, la unidad de análisis fueron los barrios de la ciudad de Fortaleza. Los datos de mortalidad se obtuvieron a través del Sistema Único de Salud, incluyendo todas las defunciones del año 2007 y sus causas. Los indicadores socioeconómicos y número de habitantes se extrajeron del Censo de Habitantes y Viviendas del Instituto Brasileño de Estadísticas del año 2000. Se calculó un índice compuesto de privación a partir de los principales indicadores simples de privación utilizando una técnica de agrupamiento tipo Cluster y se realizó un análisis de correlación para valorar la asociación entre nivel socioeconómico y mortalidad. El índice compuesto de privación se dividió en cinco grupos, el grupo 1 presentaba las mejores condiciones socioeconómicas y el 5 las peores. Resultados: Se observó asociación significativa del nivel socioeconómico con la mortalidad total (p<0,001, por enfermedades circulatorias (p<0,001 y por causas externas (p<0,001. Además, el 86% de los casos de agresión sucedieron en los grupos 4 y 5. Conclusiones: Existe relación directa entre la condición socioeconómica y la mortalidad total por causas circulatorias y por causas externas.

  6. Analysis of the natural gas market in Fortaleza metropolitan region (Brazil); Analise do mercado de gas natural na regiao metropolitana de Fortaleza

    Energy Technology Data Exchange (ETDEWEB)

    Barroso, Carlos Andre M.; Rabelo, Clarice A.C.; Santana, Lana L.P.; Sucupira, Marcos L.L. [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil)

    2004-07-01

    Natural gas has become one of the most important energy sources, as we can observe in most countries' energy sector, where its presence is very significant. In Brazil, natural gas corresponds to 7,5% of all energy Also available, and the government has plans to increase this number to 12% until 2010. However, in order to reach this goal, it is important to understand how market works, evaluating all the aspects that have some influence on it. This paper goal is to analyze the natural gas market in Fortaleza metropolitan region, emphasizing the industrial sector, the biggest consumer in Ceara State. The main aspects are characterized here, like professionals qualification in the area, service quality, from equipment and maintenance suppliers until gas distributors, legal aspects, and other factors that are also relevant to a possible future expansion of different natural gas market segments (industry, residence, commerce and transport). (author)

  7. Association among nursing diagnoses, demographic variables, and clinical characteristics of patients with high blood pressure Asociación entre diagnósticos de enfermería y variables sociales/clinicas en pacientes hipertensos Associação entre diagnósticos de enfermagem e variáveis sociais/clínicas em pacientes hipertensos

    Directory of Open Access Journals (Sweden)

    Francisca de Fátima Vasconcelos

    2007-09-01

    ocurrencia de diagnósticos de enfermería.OBJETIVO: Analisar a associação estatística entre diagnósticos e características sociais / clínicas de pacientes hipertensos. MÉTODOS: Os dados foram coletados numa unidade básica de saúde de Fortaleza-Ce com 67 pacientes. A identificação dos diagnósticos foi procedida segundo a taxonomia da NANDA. Para análise dos dados utilizou-se testes de Fisher, Qui-Quadrado de Pearson e Razão de Verossimilhança. RESULTADOS: Encontrou-se 54 diagnósticos de enfermagem e 15 acima do percentil 75. Verificou-se associação estatística entre: Controle eficaz do regime terapêutico e número de medicamentos; Padrão de sono perturbado e estado civil; Intolerância à atividade e escolaridade e anos de diagnóstico; Disfunção sexual e sexo e escolaridade; Risco para quedas e idade, estado civil e tempo de diagnóstico da doença; Dor crônica e estado civil. CONCLUSÃO: Algumas características demográficas estão associadas à ocorrência de diagnósticos de enfermagem.

  8. FORTALEZA NA COPA DO MUNDO: a visão dos turistas estrangeiros sobre a cidade no jornalismo local

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    Silvia Helena Belmino

    2016-08-01

    Full Text Available O artigo tem por objetivo investigar como o jornalismo local apresenta a visão dos turistas estrangeiros sobre Fortaleza durante a Copa do Mundo de 2014. Partindo dos referenciais sobre imagem, discute-se a construção da imagem do Brasil e, mais especificamente, do Ceará. A análise crítica do discurso (ACD, com base nas proposições de Norman Fairclough (2005, é o caminho escolhido para analisar duas notícias publicadas em junho de 2014, nos dois principais jornais da cidade, O Povo e Diário do Nordeste. O foco em qualidades de Fortaleza ajuda a construir uma imagem positiva da cidade para o cidadão local.    PALAVRAS-CHAVE: Imagem; turismo; Fortaleza; jornalismo, consumo.     ABSTRACT This article aims to investigate how local journalism presents the view of foreign tourists about the city of Fortaleza during 2014 World Cup. The theoretical framework is based on discussions about the formation of Brazil’s and Ceará’s images. Critical discourse analysis, as suggested by Norman Fairclough (2005, is the chosen methodology to analyze two news articles published in June 2014, in the two main newspapers of Fortaleza, O Povo and Diário do Nordeste. The focus in the positive attributes helps to build a positive image of the city for its citizen.   KEYWORDS: Image; tourism; Fortaleza; journalism; consumption     RESUMEN El artículo tiene como objetivo investigar cómo el periodismo local, presenta la visión de los turistas extranjeros sobre Fortaleza durante la Copa Mundial de 2014. Sobre la base de la imagen de referencia, se analiza la construcción de la imagen de Brasil y, más específicamente, de Ceará. El Análisis Crítico del Discurso (ACD, sobre la base de las propuestas de Norman Fairclough (2005, es el camino elegido para analizar dos informes publicados en junio de 2014, los dos principales periódicos de la ciudad, diario El Pueblo y el Diario del Noreste . El foco en las cualidades de Fortaleza ayuda a construir

  9. Fatores influenciadores do processo de compra das consumidoras de moda íntima de Fortaleza

    OpenAIRE

    Façanha, Karine Forte

    2016-01-01

    A compreensão dos fatores influenciadores do comportamento de compra do consumidor é muito importante para o sucesso das empresas, elevando a competência delas para lidar com a intensa concorrência a que estão submetidas. Nesse sentido, este estudo tem por objetivo analisar os fatores que influenciam o comportamento de compra das consumidoras varejistas de lingerie na cidade de Fortaleza e avaliar agrupamentos dessas consumidoras de acordo com as características demográficas. Os influenciador...

  10. La comunicación ante la convergencia digital: algunas fortalezas y debilidades

    OpenAIRE

    José Alberto García Avilés

    2009-01-01

    La convergencia de medios es un proceso facilitado por la implantación generalizada de las tecnologías digitales de la telecomunicación, que afecta aspectos muy diversos y propicia una integración de herramientas, espacios, métodos de trabajo y lenguajes anteriormente disgregados. La convergencia se desarrolla, al menos, en cinco ámbitos: tecnológico, empresarial, de los contenidos, de los usuarios y de los profesionales de los medios. El artículo analiza distintas fortalezas y debilidades qu...

  11. Prematuridade entre recém-nascidos de mães com Amniorrexe Prematura Prematuridad entre recién nacidos de nadres com Amniorrexis Prematura Prematurity among new-borns of Mothers with Premature Amniorrexis

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    Fernanda Lima Batista Santos

    2006-12-01

    Full Text Available Estudo descritivo realizado em maternidade pública de Fortaleza-CE, com objetivo de caracterizar a prematuridade entre recém-nascidos (RNs internados na Unidade Neonatal em decorrência da amniorrexe prematura. Analisaram-se 37 recém-nascidos e suas mães. Dos RNs, foram analisados: grau de prematuridade, Apgar e necessidade de reanimação. Das mães: idade gestacional, realização de pré-natal, patologias na gestação e tipo de parto. Verificou-se que 35,1% nasceram prematuros e 29,7% com Apgar entre 0 e 6 no 1º minuto de vida, necessitando de reanimação. Quanto à idade gestacional, 35,1% apresentaram ruptura das membranas antes da 37ª semana, 5,4% não realizaram pré-natal, 67,5% compareceram a 2 a 5 consultas e 27,1% referiram 6 ou mais; 16,2% das mães apresentaram doença hipertensiva específica da gestação (DHEG, e 51,3% tiveram parto normal. Conclui-se que a prematuridade foi elevada, podendo representar importante causa de morbimortalidade neonatal, como também acarretar complicações clínicas e obstétricas para a mãe. A DHEG ainda representa um risco para a gravidez. É preciso que novos estudos sobre a temática sejam realizados para se conhecer a verdadeira magnitude do problema.Estudio descriptivo realizado en maternidad pública de Fortaleza-CE, con el objetivo de caracterizar la prematuridad entre recién nacido (RN internados en la Unidad Neonatal debido al amniorrexis prematuro. Se analisaron 37 recién nacidos y sus madres. De los recién nacidos se analizó: el grado de la prematuridad, apgar y necesidad de reanimación. De las madres: edad gestacional, acompãnamiento pré-natal, tipo del parto y patologías de la gestación. Fué verificado que 31,1% nacieron prematuras, 29,7% con Apgar entre 0 y 6 en el primeiro minuto de vida, necesitando de reanimación. Con respecto a la edad gestational, 35,1% presentaron las rupturas de la membrana antes de la 37ª. Semana, 5,4% sin acompãnamiento pré-natal, 67

  12. CONTAMINAÇÃO AMBIENTAL POR LARVAS E OVOS DE HELMINTOS EM AMOSTRAS DE AREIA DE PRAIAS DO MUNICÍPIO DE FORTALEZA-CEARÁ.

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    Ésio Fortaleza Nascimento Chaves Pedrosa

    2014-03-01

    Full Text Available Introdução: As praias são importantes focos de infecção humana por microrganismos, tanto através da água quanto do solo, sendo esta última um excelente meio de veiculação de várias espécies de parasitos, entre eles S. stercoralis, Toxocara canis, A. lumbricoides, Ancilostomídeos, entre outros. Objetivo do estudo: avaliar a contaminação das praias de Fortaleza (Praia do Futuro, Barra do Ceará e Beira Mar por parasitas de importância médica.Materiais e Métodos: Foram selecionados seis pontos de cada praia onde foi colhido material (100 g de areia em três amostras (uma superficial, uma com 10 cm de profundidade e outra com 20 cm, totalizando 54 amostras, que foram transportadas imediatamente ao laboratório para a análise. Resultados: Dentre as 54 amostras de areia analisadas, em 39 (72,2% foram encontradas larvas, das quais 35 (64,8% foram positivas para Ancylostoma sp , 3 (5,5% para Strongyloides stercoralis e 4 (7,4%  com ovos de Trichuris trichiura. Discussão: Os resultados apresentados comprovam a contaminação do solo da praia do Futuro, Beira Mar e Barra do Ceará, assim como a possibilidade de ocorrência de infecções humanas por enteroparasitas através do solo. Conclusão: Conclui-se que as praias da Barra do Ceará, Praia do Futuro e Beira Mar da cidade de Fortaleza encontram-se em situação precária de saneamento, visto que foram encontrados ovos e larvas de parasitas potencialmente infectantes em 72,2% das amostras, tornando-se necessário apoio e suporte de medidas da vigilância sanitária nestas praias imediatamente.

  13. Entre nous.

    Directory of Open Access Journals (Sweden)

    Boris Beaude

    2005-04-01

    Full Text Available Skype n’est pas un site mais un logiciel. Ce logiciel est tellement représentatif de la dynamique actuelle d’Internet qu’il mérite une attention particulière. Créé par les fondateurs de Kaaza, le logiciel de P2P ( Peer To Peer qui fut aussi contesté que célèbre (plusieurs millions d’utilisateurs, Skype se présente comme un logiciel de téléphonie permettant à ses utilisateurs de téléphoner par Internet. L’idée n’est pas nouvelle et pourtant, seule cette ...

  14. O uso do clítico na fala culta de Fortaleza

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    Emanuela Monteiro GONDIM

    2012-05-01

    Full Text Available

    Este trabalho visa verificar a ocorrência ou o apagamento do clítico nos verbos pronominais na fala de informantes cultos de Fortaleza, em diferentes contextos. Contrariando o que a Gramática Tradicional (GT afirma a respeito dos verbos pronominais, a queda do clítico já vem sendo comprovada em algumas regiões brasileiras. Sendo assim, é importante verificarmos o uso desses pronomes por falantes de Fortaleza. Para tanto, basear-nos-emos na teoria variacionista, para analisarmos ocorrências retiradas do corpus PORCUFORT. Os resultados apontam para uma tendência ao desuso desses pronomes, inclusive, com alguns verbos considerados pronominais pela GT. Tais resultados mostram a validade de uma pesquisa que analise um corpus mais atual, já que os dados do PORCUFORT foram coletados na década de 80, para que possa ser verificado se atualmente o clítico tem sido mais frequentemente apagado ou utilizado.

  15. Retrospective Study on Dengue in Fortaleza, State of Ceará, Brazil

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    Cunha RV da

    1998-01-01

    Full Text Available A retrospective serologic study was carried out in Fortaleza, State of Ceará, Brazil, in order to detect the dengue virus activity before recognizing the epidemic of 1994. Mac-Elisa was performed by using a mixture of specific DEN-1 and DEN-2 antigens on serum samples from the Emilio Ribas Laboratory collection. Samples were obtained from 1,224 patients with exanthematic febrile disease and negative serological results for rubella. All specimens were taken during November 1993 to May 1994. The results confirmed dengue infections in Fortaleza by November 1993, approximately six months before the beginning of the epidemic, proving how misleading diagnosis of dengue infection are still troublesome, in spite of the strong dengue activity in Ceará. The authors stress the urgent necessity to implement the active surveillance system in order to prevent another extensive dengue fever epidemics in the state. Epidemiological background of the dengue activity in the State of Ceará is also described.

  16. Amyotrophic lateral sclerosis: clinical analysis of 78 cases from Fortaleza (Northeastern Brazil

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    CASTRO-COSTA CARLOS M. DE

    1999-01-01

    Full Text Available We report on the clinical characteristics of amyotrophic lateral sclerosis (ALS in Fortaleza (Northeastern Brazil. For this, we analyzed retrospectively (from 1980 to 1999 78 cases of ALS from the Service of Neurology of the University Hospital of Fortaleza diagnosed clinically and laboratorially (EMG, muscle biopsy, myelography, blood biochemistry, muscle enzymes and cranio-cervical X-ray. The results showed that they were mostly sporadic ALS (76/78, and they were divided into definite (n= 36, probable (n= 20, possible (n= 15 and suspected (n= 7, according to the level of diagnostic certainty. They were also subdivided into juvenile (n= 17, early-onset adult (n= 18, age-specific (n= 39 and late-onset (n= 4 groups. Clinically, they presented as initials symptoms, principally, asymmetrical (30/78 and symmetrical (24/78 weakness of extremities, besides bulbar signs, fasciculations, and atrophy. Curiously, pain as first symptom occurred in an expressive fashion (17/78. The predominant initial anatomic site, in this series, was the spinal cord, and mainly affecting the arms. As to the symptom accrual from region to region, this occurs more quickly in contiguous areas, and fasciculations are predominant when bulbar region was associated.

  17. Evaluación de las Virtudes y Fortalezas Humanas en Población de Habla Hispana

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    Alejandro C. Cosentino

    2015-09-01

    Full Text Available La Psicología Positiva es el estudio científico de las experiencias subjetivas positivas, los rasgos individuales positivos y las instituciones positivas. La comprensión de los rasgos individuales positivos consiste en el estudio de las virtudes y fortalezas del carácter. Luego de un prolongado hiato, nuevamente ha comenzado el estudio del carácter moral en la psicología científica. Se presenta el desarrollo de un instrumento para la evaluación de las virtudes y fortalezas humanas según la clasificación del carácter de 6 virtudes y 24 fortalezas de Peterson y Seligman [Peterson, C. & Seligman, M.E.P. (2004. Character strengths and virtues: A handbook and classification. Washington, DC, EE.UU. American Psychological Association; Oxford University Press]. Análisis psicométricos preliminares del Inventario de Virtudes y Fortalezas (IVyF sugieren que este inventario muestra una razonable confiabilidad y estructura factorial. 

  18. Copa do Mundo FIFA Brasil 2014: vigilância ativa e perfil dos atendimentos de saúde na cidade-sede de Fortaleza, Ceará

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    Márcio Henrique de Oliveira Garcia

    Full Text Available Resumo OBJETIVO: descrever a estratégia de vigilância ativa em tempo real e o perfil dos atendimentos de saúde realizados no período da 20ª Copa do Mundo da FIFA Brasil 2014 (CMFB, na cidade-sede de Fortaleza, Ceará, Brasil. MÉTODO: estudo descritivo com dados das fichas de atendimento relacionados à Copa, entre 8/6 e 13/7/2014, nas unidades de saúde pré-selecionadas. RESULTADOS: foram 2.570 atendimentos relacionados à CMFB, 56% de indivíduos do sexo masculino, 35% de 20 a 29 anos de idade, 68% foram atendimentos clínicos, 64% de torcedores/espectadores; 94% dos atendidos foram liberados, 3% removidos, 3% internados e 0,2% idos a óbito; os postos médicos avançados responderam por 79% dos atendimentos, principalmente nos dias de jogos. CONCLUSÃO: não foram identificados eventos de Saúde Pública de grande relevância; a estratégia de vigilância ativa possibilitou monitorar a situação de saúde dos envolvidos no evento.

  19. Prevalência e associação de asma e rinite em adolescentes de 13 e 14 anos de Fortaleza, Ceará, Brasil

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    Maria de Fátima Gomes de Luna

    2011-01-01

    Full Text Available Objetivou-se avaliar a prevalência e associação de asma e rinite. Trata-se de estudo transversal envolvendo 3.015 adolescentes de 13-14 anos de Fortaleza, Ceará, Brasil, de escolas públicas e privadas, utilizando-se o protocolo do International Study of Asthma and Allergies in Childhood (ISAAC, em 2006/2007. A prevalência de asma foi 22,6%; de rinite, 43,2% e de rinoconjuntivite, 18,7%, predominando no sexo feminino (p = 0,002, p < 0,001 e p < 0,001, respectivamente e nos adolescentes das escolas privadas (p < 0,001. Entre os adolescentes que relataram asma, a taxa de rinite foi de 64,4% e de rinoconjuntivite, 35,3%. A taxa da associação asma-rinite na população foi de 14,6%, e asma-rinoconjuntivite, 8%, predominando no sexo feminino (p < 0,001 e p < 0,001, respectivamente e associando-se a sibilos com limite da fala (p = 0,037 e p = 0,004, respectivamente. O estudo pode contribuir para alertar os profissionais de saúde quanto à importância da abordagem integrada dessas enfermidades, considerando o conceito da "via aérea única" e buscando opções de tratamento que atuem nas duas condições quando presentes simultaneamente.

  20. Prevalences of asthma and rhinitis among adolescents in the city of Fortaleza, Brazil: temporal changes.

    Science.gov (United States)

    Luna, Maria de Fátima Gomes de; Fischer, Gilberto Bueno; Luna, João Rafael Gomes de; Silva, Marcelo Gurgel Carlos da; Almeida, Paulo César de; Chiesa, Daniela

    2013-01-01

    To describe the prevalences of asthma and rhinitis in adolescents (13-14 years of age) in the city of Fortaleza, Brazil, in 2010, comparing the results with those obtained in a prevalence survey conducted in 2006-2007. This was a cross-sectional study involving probabilistic samples of 3,015 and 3,020 adolescents in surveys conducted in 2006-2007 and 2010, respectively. The International Study of Asthma and Allergies in Childhood protocol was used on both occasions. Comparing the two periods, there were no significant differences regarding cumulative wheezing, active asthma, four or more wheezing attacks within the last year, sleep disturbed by wheezing more than one night per week, and speech-limiting wheezing. The prevalences of exercise-induced wheezing, dry cough at night, and physician-diagnosed asthma were significantly higher in 2010 than in the 2006-2007 period (p school students than in public school students (p school students.

  1. La comunicación ante la convergencia digital: algunas fortalezas y debilidades

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    José Alberto García Avilés

    2009-01-01

    Full Text Available La convergencia de medios es un proceso facilitado por la implantación generalizada de las tecnologías digitales de la telecomunicación, que afecta aspectos muy diversos y propicia una integración de herramientas, espacios, métodos de trabajo y lenguajes anteriormente disgregados. La convergencia se desarrolla, al menos, en cinco ámbitos: tecnológico, empresarial, de los contenidos, de los usuarios y de los profesionales de los medios. El artículo analiza distintas fortalezas y debilidades que afronta el sector de la comunicación ante el desarrollo de la convergencia digital en cada uno de estos cinco ámbitos. Finalmente, las recomendaciones apuestan por mantener y fortalecer los contenidos de servicio público, interés general y acceso universal en el escenario de convergencia.

  2. Fatores relacionados ao diagnóstico de enfermagem autocontrole ineficaz da saúde entre diabéticos Factores relacionados al diagnóstico de enfermería autocontrol ineficaz de la salud entre diabéticos Factors related to nursing diagnosis, ineffective self-health management, among diabetics

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    Roberto Wagner Júnior Freire de Freitas

    2011-01-01

    Full Text Available OBJETIVO: Investigar os fatores relacionados ao diagnóstico de enfermagem autocontrole ineficaz da saúde em usuários, de serviço de atenção básica à saúde, com Diabetes mellitus tipo 2, tratados com antidiabéticos orais (AO, segundo o sexo. MÉTODOS: Estudo de análise secundária de um banco de dados de pesquisa realizada, entre janeiro e julho de 2009, nos domicílios de 377 usuários de 12 centros de saúde da família de Fortaleza-CE. Para determinar a presença do diagnóstico de enfermagem foi realizada uma analogia entre as questões do teste Medida de Adesão ao Tratamento e quatro das cinco características definidoras do diagnóstico pesquisado. RESULTADOS: Os homens tinham um sentimento de impotência maior (30,4% que as mulheres (18,4% acerca da tomada dos AO (p=0,034. As mulheres conseguiram perceber melhor os benefícios da tomada correta dos AO no controle do Diabetes (p=0,002. CONCLUSÃO: Fatores de caráter socioeconômico importantes no controle da doença como a demanda excessiva e deficit de apoio social foram predominantes e significativos entre os homens.OBJETIVO: Investigar los factores relacionados al diagnóstico de enfermería autocontrol ineficaz de la salud en usuarios, del servicio de atención básica a la salud, con Diabetes mellitus tipo 2, tratados con antidiabéticos orales (AO, según el sexo. MÉTODOS: Estudio de análisis secundario de un banco de datos de investigación realizada, entre enero y julio del 2009, en los domicilios de 377 usuarios de 12 centros de salud de la familia de Fortaleza-CE. Para determinar la presencia del diagnóstico de enfermería fue realizada una analogía entre las preguntas del test Medida de Adhesión al Tratamiento y cuatro de las cinco características definidoras del diagnóstico investigado. RESULTADOS: los hombres tenían un sentimiento de impotencia mayor (30,4% que el de las mujeres (18,4% respecto a la toma de los AO (p=0,034. Las mujeres consiguieron percibir

  3. Recovery Ce from Ce - TBP Used Oxalic Acid

    International Nuclear Information System (INIS)

    Purwani, MV; Subagiono, R.; Suyanti

    2007-01-01

    Recovery or stripping Ce from Ce - TBP product of monazite sand used oxalic acid. Ce - TBP as organic phase and oxalic acid as aqueous phase and as strong precipitant compound to precipitate metal element. The stripping product as Ce - oxalic precipitate. The influence parameter were percentage of oxalic acid, volume ratio of Ce-TBP with oxalic acid, time and rate of stripping. At stripping of 25 ml Ce - TBP used oxalic acid, the optimum condition were achieve at using 5% oxalic acid, volume ratio of Ce - TBP : 5% oxalic acid = 1 : 1, time of stripping 7.5 minute and rate of stripping 150 rpm. At the optimum condition was obtained the recovery efficiency was 100%. (author)

  4. LIDERANÇA, ESTILOS PESSOAIS, ESTRATÉGIAS E DESEMPENHO DE MICRO E PEQUENOS EMPRESÁRIOS DO SETOR INDUSTRIAL DE FORTALEZA

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    Francisco Rogério de Morais Silva

    2011-07-01

    Full Text Available Este estudo investigou as relações entre características pessoais, tendências de caráter e estratégias adotadas por empresários e sua relação com o sucesso de pequenas empresas do setor industrial de Fortaleza. As análises dos dados coletados mostraram que, a exemplo do que foi comprovado em estudos anteriores, determinadas características pessoais são mais associadas ao bom desempenho empresarial e tal associação é reforçada por estratégias relevantes para esse tipo de empresário. Além de comprovar achados de estudos anteriores sobre essas relações, o estudo atual revelou que é possível identificar traços de caráter que, somados ou identificados com características pessoais e estratégias psicológicas ou empresariais, melhoram o desempenho empresarial. Identificou-se uma tendência predominante dos seguintes estilos de caráter no grupo pesquisado: individualista cívico e coletivista seguidos do individualista heróico, narcisista e obsessivo. A consciência de sua competência, assumir o trabalho como valor supremo, compartilhar suas decisões e ter a capacidade de reavaliação a partir dos próprios erros foram algumas características relacionadas aos estilos: individualista cívico e coletivista. O estudo evidenciou que empresários com bons índices de desempenho são também os mais satisfeitos e realizados a nível pessoal e profissional, reforçando a relação entre sucesso objetivo e subjetivo. Entre as estratégias mais utilizadas, “orientação empresarial para o desempenho da empresa e dos empregados”, “prática da inovação e do uso da criatividade” e “profissionalismo” estão entre as mais efetivas para o alcance do sucesso empresarial.

  5. Genotyping of Mycobacterium leprae for better understanding of leprosy transmission in Fortaleza, Northeastern Brazil.

    Science.gov (United States)

    Fontes, Amanda N B; Lima, Luana N G C; Mota, Rosa M S; Almeida, Rosa L F; Pontes, Maria A; Gonçalves, Heitor de S; Frota, Cristiane C; Vissa, Varalakshmi D; Brennan, Patrick J; Guimaraes, Ricardo J P S; Kendall, Carl; Kerr, Ligia R F S; Suffys, Philip N

    2017-12-01

    Leprosy is endemic in large part of Brazil with 28,761 new patients in 2015, the second largest number worldwide and reaches 9/10.000 in highly endemic regions and 2.7/10.000 in the city of Fortaleza, Ceará, Northeast Brazil. For better understanding of risk factors for leprosy transmission, we conducted an epidemiologic study supplemented by 17 locus VNTR and SNP 1-4 typing of Mycobacterium leprae in skin biopsy samples from new multibacillary (MB) patients diagnosed at a reference center in 2009 and 2010. Among the 1,519 new patients detected during the study period, 998 (65.7%) were MB and we performed DNA extraction and genotyping on 160 skin biopsy samples, resulting in 159 (16%) good multilocus VNTR types. Thirty-eight of these patients also provided VNTR types from M. leprae in nasal swabs. The SNP-Type was obtained for 157 patients and 87% were of type 4. Upon consideration all VNTR markers, 156 different genotypes and three pairs with identical genotypes were observed; no epidemiologic relation could be observed between individuals in these pairs. Considerable variability in differentiating index (DI) was observed between the different markers and the four with highest DI [(AT)15, (TA)18, (AT)17 and (GAA)21] frequently demonstrated differences in copy number when comparing genotypes from both type of samples. Excluding these markers from analysis resulted in 83 genotypes, 20 of which included 96 of the patients (60.3%). These clusters were composed of two (n = 8), three (n = 6), four (n = 1), five (n = 2), six (n = 1), 19 (n = 1) and 23 (n = 23) individuals and suggests that recent transmission is contributing to the maintenance of leprosy in Fortaleza. When comparing epidemiological and clinical variables among patients within clustered or with unique M. leprae genotypes, a positive bacterial index in skin biopsies and knowledge of working with someone with the disease were significantly associated with clustering. A tendency to belong to a cluster was

  6. El estudio científico de las fortalezas trascendentales desde la Psicología Positiva

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    María Luisa Martínez Martí

    2006-01-01

    Full Text Available Dentro del marco de la Psicología positiva existe una línea de investigación centrada en las virtudes y fortalezas del ser humano, entendidas como rasgos positivos de personalidad, que está elaborando una clasificación de ellas siguiendo un esquema similar al del Diagnostic and Statistical Manual of Mental Disorders (DSM. En este artículo se exponen algunos de los estudios que muestran los efectos beneficiosos de un grupo concreto de estas fortalezas, las trascendentales (espiritualidad, gratitud, esperanza, apreciación de la belleza y excelencia, humor, con la intención de promover su investigación.

  7. [Training health workers to deal with sexual abuse of children and adolescents in Fortaleza, Ceará State, Brazil].

    Science.gov (United States)

    Deslandes, Suely; Cavalcanti, Ludmila Fontenele; Vieira, Luiza Jane Eyre de Souza; Silva, Raimunda Magalhães da

    2015-02-01

    This study aimed to identify initiatives for training staff in the municipal healthcare system in Fortaleza, Ceará State, Brazil, to deal with cases of sexual abuse of children and adolescents. The reference for this exploratory study was the training program provided by the municipal government in 2010-2012 for administrators and health professionals in the public healthcare system in Fortaleza. At the time, the issue of sexual abuse was low in the system's training programs, despite recognition of its importance. Federal and State programs have provided input for such training programs in the various municipal health departments. The main strategy was to invest in training for health workers in primary care. Social workers were found to have insufficient training, aggravated by temporary work contracts and high staff turnover. The study suggests the need for training to deal with violence, particularly sexual abuse.

  8. A ESPACIALIDADE DO VILEGISTURISTA MARÍTIMO EM FORTALEZA, CEARÁ: práticas e transformações recentes

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    Antônio Tadeu Pinto Soares Júnior

    2010-01-01

    Full Text Available The relationship of the society with the sea is redesigned by the metropolis with the consolidation of the modern maritime practices and the valorization of the land close to the sea (swimming, walks, "vilegiatura", habitation and coastal tourism as a place for entertainment and living, observed in the capitals of the northeast like Fortaleza. The practice of the "vilegiatura maritima" became present in the city in the decade of 1930 in the Iracema beach with the "vilegiaturistas" belonging to the upper class of Fortaleza and of all the Province of Ceará. Later, with the coastal urbanization in the decade of 1970, the phenomenon reaches also the municipalities members of the metropolitan region of the city such as Caucaia and Aquiraz. This work has as a general goal to analyse the phenomenon of the "vilegiatura marítima" that takes place on the cost of Fortaleza, evidenced by the acquisition of secondary residences in order to live close to the beach, even in a seasonal way, in the period from 1991 to 2000. In order to understand the unfolding of theses social processes in their urban tissue, Fortaleza and how its coastal space presents the practice of "vilegiatura maritima" were analyzed, by the diverse social agents, named the "vilegiaturistas" (domestic and foreign, the State, the real state sector and society, responsible for the transformations caused by the occupation, investment practices and use of the coastal zone, be for entertainment, be for secondary residences in condos. In this study are analysed the neighbourhoods of Iracema beach, Meireles, and Future beach I and it showed that the "vilegiaturistas marítimos" are concentrated on the Central and East part of the city, and simultaneously their "dilution" in the metropolis generating multicultural spots, opposite to the fi rst hypothesis of the "vilegiatura maritíma" as "the scape from the city", once this phenomenon became predominantly urban.

  9. REESTRUTURAÇÃO PRODUTIVA, TRABALHO E TRANSFORMAÇÕES NO ESPAÇO METROPOLITANO DE FORTALEZA

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    Alexsandra Maria Vieira Muniz

    2011-08-01

    Full Text Available In the face of the ongoing process of productive and spatial restructuring, the Metropolitan Region of Fortaleza(RMF experiments the substitution of forms and the diversification of its functions. The creation of industrialdistricts and large housing projects has led to a complex form of the urban structure in the metropolis,with changes in the socio-spatial organization. Different from an expected loss of functions, Fortaleza hasstrengthened its command capacities due to the new roles that the municipalities of the RMF play in the socialand technical division of labor. However, these municipalities have remained dependent on the supply of servicesfrom the capital that has specialized on the tertiary sector, increasing its polarizing power and area of influence.The policies for the incentive of tourism, real estate deals, agribusiness, and the growth and expansion of theindustry in Ceará have produced changes in the employment structure, on the labor market, and consequently inthe metropolis. This article analyzes the impacts of the processes of restructuring in the metropolitan space ofFortaleza and their implications for the labor force profile and the spatial mobility. It shows the impulse and therescaling of the industry in the RMF and the resulting expansion of its zone of influence to other states and thetransnational space, and these processes favor the emergence of new centralities.

  10. Prevalência e perfil quanto ao uso de recursos ergogênicos entre acadêmicos de Licenciatura em Educação Física

    Directory of Open Access Journals (Sweden)

    Maurício Francisco Santos

    2017-04-01

    Full Text Available Atualmente, muitos jovens, influenciados pela mídia, têm utilizado Recursos Ergogênicos (RE (substâncias utilizadas com o intuito de melhorar o desempenho esportivo. Sem atentar para os malefícios à saúde, o abuso de tais substancias podem acarretar efeitos irreversíveis. Objetivo: analisar a prevalência e traçar um perfil dos usuários de RE em discentes do curso de graduação em Educação Física. Método: trata-se de um estudo transversal descritivo, realizado com 200 discentes de uma Instituição de Ensino Superior (IES localizada na cidade de FortalezaCE. Os estudantes, de ambos os sexos, têm idade superior a 18 anos. Foram incluídos aqueles que praticam algum esporte há, no mínimo, 3 meses, através de um inquérito, com questões abertas e fechadas. Resultados e Considerações finais: concluiu-se que a maioria dos voluntários é do sexo masculino, com idade entre 20 e 35 anos, os produtos mais consumidos são suplementos proteicos, vitamínicos e creatina. A utilização de RE é contínua e a procura por nutricionistas ou médicos é baixa, sendo a orientação sobre o uso de ergogênicos obtida de fontes pouco confiáveis, como amigos e internet. A maioria dos usuários não se mostrou preocupada com eventuais problemas de saúde por seu uso indiscriminado.

  11. Prevalência e fatores determinantes do consumo de medicamentos no Município de Fortaleza, Ceará, Brasil Prevalence and determinants of medicines consumption in Fortaleza, Ceará, Brazil

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    Paulo Sérgio Dourado Arrais

    2005-12-01

    Full Text Available O presente trabalho tem por finalidade investigar a prevalência e os determinantes do consumo de medicamentos pela população de Fortaleza, Ceará, Brasil. Com base em um delineamento transversal de base populacional, estudou-se uma amostra representativa de 331 domicílios, onde foram entrevistadas 1.370 pessoas, no período de outubro/2002 a janeiro/2003. Foram consideradas consumidoras de medicamentos todas as pessoas que nos 15 dias anteriores à entrevista tenham consumido pelo menos um medicamento. Para análise estatística foram incluídas 1.366 pessoas. A prevalência do consumo de medicamentos foi de 49,7%. Os fatores preditores do consumo na análise multivariada, por regressão logística, foram: renda familiar mensal maior que três salários mínimos, idade igual ou maior que 50 anos, sexo feminino, três ou menos pessoas por domicílio, doente crônico, ter plano de saúde e ter se consultado uma ou mais vezes nos últimos três meses. A prevalência do consumo de medicamentos em Fortaleza é elevada, mas encontra-se dentro dos parâmetros encontrados no Brasil e no exterior. No entanto, sugere que existe uma iniqüidade no acesso aos medicamentos.The objective of this work was to investigate the prevalence and determinants of medicines consumption in Fortaleza, Ceará, Brazil. A population-based cross-sectional study was carried out in a representative sample of 331 households. A total of 1,370 persons living in Fortaleza were interviewed from October 2002 to January 2003, and 1,366 were selected for this study. Consumers were defined as all persons having used one or more drugs during the preceding 15 days. The prevalence of medicine consumption was 49.7%. The following were the predictive factors for medicines consumption according to the multivariate logistic regression analysis: family income > 3 minimum wages, older age ( > or = 50, female gender, > or = 3 persons living in household, chronic disease, having a health

  12. [Impact of violence on the health of families at Fortaleza, Ceará State].

    Science.gov (United States)

    Vieira, Luiza Jane Eyre de Souza; Arcoverde, Márcia Liduína Vasconcelos; Araújo, Maria Alix Leite; Ferreira, Renata Carneiro; Fialho, Ana Virgínia de Melo; Pordeus, Augediva Maria Jucá

    2009-01-01

    The study describes the impact of the violence on the quality of life of the families, which were attended at the Relatives and Friends Violence Victims Association (ARFVV) in Fortaleza, Ceará State. The case study was accomplished among five mothers that were involved in a NGO on the battle against the violence. The semi-structured interview, the participation at the institution's meetings and the documental research were the data collecting techniques, being these last ones, submitted to the thematic analysis and discussed according to the literature and Letters of Health Promotion. The impacts caused by the violence comprise the physical, emotional and social family's health, cause changes on behavior between the members, and lead to the increasing of smoking, drinking, social isolation and exacerbate revolt feelings, vengeance and pessimism. The NGO's work has been important to support the families on the conflicts overcoming, health familiar restoration, redeeming the self-expectation, the hope on the justice and social mobility. The health of families' victims from violence is affected on the biological, emotional and social aspects, favoring the process of sickness. These have appealed to the support from NGOs to transform the 'victim condition' - violence hostage to the 'responsible citizenship' - guardians of peace on the battle against the urban violence.

  13. La formación actual del médico: fortalezas y debilidades

    Directory of Open Access Journals (Sweden)

    X. Clèries

    Full Text Available Las “Jornadas estatales de estudio y debate sobre el futuro de la formación integral del médico ¿bioingeniería o medicina?” que se realizaron en Barcelona el 8 y 9 de febrero de 2008 fueron el marco para que un grupo de trabajo abordara el tema de las fortalezas y debilidades de la formación actual del médico. Las principales aportaciones se estructuraron en los tres niveles educativos siguientes: pregrado, posgrado y formación continuada. Se destacó la necesidad de una formación integral y psicosocial en la enseñanza de pregrado, la conveniencia de una estructuración troncal de la formación de posgrado para conseguir una mayor transversalidad de la competencia del médico y la contextualización de la formación continuada en el desarrollo profesional de cada médico. El predominio de los conocimientos biomédicos y tecnológicos en la formación actual del médico contrastan con las demandas de carácter psicosocial de una gran parte de la población en el sistema sanitario.

  14. Aspectos das fortalezas e fragilidades no uso das metodologias ativas de aprendizagem

    Directory of Open Access Journals (Sweden)

    Maria José Sanches Marin

    Full Text Available A implementação de novos modelos de ensino-aprendizagem vem ocorrendo na Faculdade de Medicina de Marília (Famema há mais de uma década. O presente estudo analisa as fortalezas e fragilidades dos métodos ativos de aprendizagem na ótica dos estudantes. Para a coleta de dados, realizaram-se entrevistas com estudantes dos cursos de Enfermagem e Medicina. Os dados foram interpretados por meio dos parâmetros da hermenêutica dialética. Os sentidos extraídos das falas dos estudantes indicam que as metodologias ativas estimulam o estudo constante, a independência e a responsabilidade, possibilitam a integração das dimensões biopsicossociais, preparam para o trabalho em equipe e aproximam os alunos dos usuários e da equipe. No entanto, nem todos estão preparados para isso; algumas vezes, sentem-se perdidos em busca de conhecimentos, além de apresentarem dificuldades quanto a sua inserção na equipe de saúde. A construção de novos modelos de aprendizagem requer constante empenho, visando ao seu aperfeiçoamento.

  15. Evaluation of satisfaction of users of erp systems in medium clothing confection companies in Fortaleza

    Directory of Open Access Journals (Sweden)

    Francismilton Teles

    2014-05-01

    Full Text Available One of the tools that help increase the competitiveness in small and medium companies is the use of ERP (Enterprise Resources Planning, which, when used properly, assist in planning, management and control. It is very important to check the success of such systems in companies and one of the most widely accepted means of analyzing them is by evaluating the satisfaction of its users. This paper assess the satisfaction of users of ERP systems in medium manufacturing clothing in Fortaleza, one of the largest centers of clothing confection from Brazil. The method used was the Survey Research, though which 117 users were interviewed in 25 companies and followed the evaluation model customized by Ely (2010, which are evaluated quantitatively the satisfaction of end users and key users of an ERP system. The results show, in general, users are satisfied with the ERP systems implemented. It was also verified by multivariate analysis, the model used was appropriate to the context of medium enterprises, because the statistical tests (Cronbach’s alpha, Bartlett’s Sphericity and KMO scores were very reliable.

  16. [Costs with personnel and productivity analysis of family health program teams in Fortaleza, Ceará].

    Science.gov (United States)

    Rocha Filho, Fernando dos Santos; da Silva, Marcelo Gurgel Carlos

    2009-01-01

    The research verified the productivity and the operational personnel costs of eight teams of the Family Health Program (PSF) of two Basic Units of Family Health (UBASF) in Fortaleza, Ceará, through the methodology of costs by absorption, in 2004. The largest expenses were with personnel (75%), mainly with the PSF teams, and medicines (18%). The federal allocations received in September, 2004, by each PSF team, were R$ 9,543.33. The total cost by team was R$ 15,719.00. Some professionals of various PSF teams showed productivity above the set objectives, but the average productivity by doctor and nurse was below fifty per cent of objectives, with high idle time making the work onerous. The unity cost of home visits by doctor and prenatal attendance by nurses were checked, and, would be less expensive if the idle time were reduced. Various alternatives of cost reduction were observed, such as scale savings of some resources and services and re-negotiation of contracts with suppliers and cooperatives. The data obtained will contribute to more accurate planning for the installation and maintenance of PSF teams as well as alternatives of cost reductions, higher productivity, and better quality.

  17. "Entre amigos y masones, o las nuevas formas de asociarse en Zacatecas (1813-1829"

    Directory of Open Access Journals (Sweden)

    Marco Antonio Flores Zavala

    2011-01-01

    Full Text Available El objetivo en este artÌculo es presentar los rasgos comunes de tres asociaciones contempor·neas y circunscritas en la provincia mexicana de Zacatecas. Una es la Sociedad de Amigos del PaÌs y las otra dos son las logias masÛnicas "Estrella Chichimeca" y "Fortaleza de Guerrero". AcompaÒamos un par de notas sobre los vÌnculos en estas sociabilidades, e interrogamos quÈ fue de singular en cada logia y quÈ vislumbramos de las posibles transferencias entre ellas.

  18. Frequency and enzymatic activity of Candida albicans isolated from the oral cavity of HIV-positive patients at Fortaleza, Ceará Freqüência e atividade enzimática de Candida albicans isolado da cavidade oral de pacientes HIV-positivos em Fortaleza, Ceará

    Directory of Open Access Journals (Sweden)

    Everardo Albuquerque Menezes

    2006-08-01

    Full Text Available Candida albicans and other species are usually involved in opportunistic infections in patients with acquired immunological deficiency syndrome (AIDS. The virulence mechanisms by which this yeast expresses its pathogenicity include adherence patterns, ability to form pseudomycelia and production of extracellular enzymes, among others. The objective of this research was to verify the frequency of Candida and the production of proteinase and phospholipase in 52 strains of Candida albicans from the oral cavity of patients infected by HIV treated at Hospital São José, AIDS reference and training center in Fortaleza, Ceará. Samples were collected of patients, with or without oral lesions characteristic of candidosis. From 100 patients, 80% presented positivity for Candida: 65% (52 were identified as C. albicans, 27.5% (22 as C. tropicalis, 2.5% (2 as C. glabrata, 2.5% (2 as C. krusei and 2.5% (2 as C. guilliermondii. Among the strains of C. albicans isolated from the oral cavity, proteinase and phospholipase were detected in 69.2% and 73%, respectively. The results suggested that C. albicans was the most frequent species observed, with intermediate expression of proteinase and phospholipase.Candida albicans e outras espécies são usualmente envolvidas em infecções de pacientes com a síndrome da imunodeficiência adquirida (AIDS. Os mecanismos de virulência pelos quais a levedura expressa sua patogenicidade incluem padrões de aderência, habilidade por formar pseudomicélio, produção de enzimas extracelulares e outros. O objetivo deste trabalho foi verificar a freqüência de Candida e a produção de proteinase e fosfolipase em 52 cepas de Candida albicans da cavidade oral de pacientes infectados pelo HIV atendidos no Hospital São José, hospital de referência e centro de treinamento em AIDS em Fortaleza, Ceará. Neste trabalho foram coletadas amostras de pacientes com ou sem lesões características de candidose. Dos cem pacientes 80

  19. CE-BEMS

    DEFF Research Database (Denmark)

    Mohamed, Nader; Lazarova-Molnar, Sanja; Al-Jaroodi, Jameela

    2016-01-01

    and costs savings in smart buildings significantly depend on the monitoring and control methods used in the installed BEMS. This paper proposes a Cloud-Enabled BEMS (CE-BEMS) for Smart Buildings. This system can utilize cloud computing to provide enhanced management mechanisms and features for energy...... savings in smart buildings. This system is connected to the cloud to have access to a number of advanced cloud-based services to enhance energy management in smart buildings. In this paper, we discuss the current limitations of BEMS, the conceptual design of the proposed system, and the advantages......Energy consumption in smart buildings is monitored and controlled using Building Energy Management Systems (BEMS). A BEMS provides a set of methods to monitor and control a building's energy needs while maintaining a good quality of living in all of the building's spaces. Energy efficiency...

  20. CE and nanomaterials - Part II: Nanomaterials in CE.

    Science.gov (United States)

    Adam, Vojtech; Vaculovicova, Marketa

    2017-10-01

    The scope of this two-part review is to summarize publications dealing with CE and nanomaterials together. This topic can be viewed from two broad perspectives, and this article is trying to highlight these two approaches: (i) CE of nanomaterials, and (ii) nanomaterials in CE. The second part aims at summarization of publications dealing with application of nanomaterials for enhancement of CE performance either in terms of increasing the separation resolution or for improvement of the detection. To increase the resolution, nanomaterials are employed as either surface modification of the capillary wall forming open tubular column or as additives to the separation electrolyte resulting in a pseudostationary phase. Moreover, nanomaterials have proven to be very beneficial for increasing also the sensitivity of detection employed in CE or even they enable the detection (e.g., fluorescent tags of nonfluorescent molecules). © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  1. CE Challenges : Work to Do

    NARCIS (Netherlands)

    Stjepandic, J; Verhagen, W.J.C.; Wognum, P.M.

    2015-01-01

    CE has been used for more than two decades now. Despite many successes and advantages, there are still many challenges to be addressed. These challenges are both technical and organisational. In the paper we will address the current challenges of CE. Many challenges

  2. Clinical And Epidemiological Aspects Of Hepatitis B Virus And Hepatitis C Virus In Fortaleza-Ceara

    Directory of Open Access Journals (Sweden)

    Gizelly Castelo Branco Brito

    2017-06-01

    Full Text Available Introduction: Viral hepatitis is among the main problems that affect public health globally. The knowledge of the clinical and epidemiological situation of hepatitis B and hepatitis C is necessary for the establishment of prevention and control strategies together with individuals and communities in vulnerable situations. Objective: To investigate the clinical and epidemiological aspects of the population affected by hepatitis B and hepatitis C from 2007 to 2014, in Fortaleza, Ceara, Brazil. Methodology: Descriptive, retrospective study involving data from the Notifiable Diseases Information System, with analysis of gender, age, race, illicit drug use, sex partnerships, tattoo/piercing, transfusion, dialysis and transplantation. Chi-squared tests were used for statistical analysis of the variables. Results: It was reported 779 cases of hepatitis B and 756 of hepatitis C. Regarding the HBV, 69.7% were male, 77.5% of brown color, and a median age of 36 years. Regarding risk factors, there was highlight for sexual practice and number of sex partners (p = 0.001, blood transfusion (p = 0.011 and use of tattoo/piercing (p = 0.011. As for HCV, 57.7% were male and the mean age was 46 years. As for risk factors, the injecting drug use (p = 0.001, the presence of three or more partners (p = 0.001 and the use of tattoo/piercing (p = 0.021 stood out. Regardless of gender, age or race and drug use, transfusions and age over 40 years increased the risk for hepatitis. There were still high percentages of missing data in several variables. Conclusion: This study contributes to alert the Brazilian health authorities on the importance of these infections and the need to expand and strengthen current health policies, and allows reflection on control strategies for hepatitis. Keywords: Hepatitis B; Hepatitis C; Risk factors.

  3. Gastrointestinal and ectoparasites from urban stray dogs in Fortaleza (Brazil): high infection risk for humans?

    Science.gov (United States)

    Klimpel, Sven; Heukelbach, Jörg; Pothmann, David; Rückert, Sonja

    2010-08-01

    Dogs are important definite or reservoir hosts for zoonotic parasites. However, only few studies on the prevalence of intestinal parasites in urban areas in Brazil are available. We performed a comprehensive study on parasites of stray dogs in a Brazilian metropolitan area. We included 46 stray dogs caught in the urban areas of Fortaleza (northeast Brazil). After euthanization, dogs were autopsied. Ectoparasites were collected, and the intestinal content of dogs were examined for the presence of parasites. Faecal samples were collected and analysed using merthiolate iodine formaldehyde concentration method. A total of nine different parasite species were found, including five endoparasite (one protozoan, one cestode and three nematode species) and four ectoparasite species (two flea, one louse and one tick species). In the intestinal content, 3,162 specimens of four helminth species were found: Ancylostoma caninum (prevalence, 95.7%), Dipylidium caninum (45.7%), Toxocara canis (8.7%) and Trichuris vulpis (4.3%). A total of 394 ectoparasite specimens were identified, including Rhipicephalus sanguineus (prevalence, 100.0%), Heterodoxus spiniger (67.4%), Ctenocephalides canis (39.1%) and Ctenocephalides felis (17.4%). In the faeces, intestinal parasites were detected in 38 stray dogs (82.6%), including oocysts of Giardia sp. (2.2%) and eggs of the nematode A. caninum (82.6%). Neither eggs nor larval stages of D. caninum, T. canis or T. vulpis were detected in dog faeces. Sensitivity of faecal examination for A. caninum was 86.4% (95% confidence interval, 72.0-94.3) but zero percentage for the other intestinal helminth species. Our data show that stray dogs in northeast Brazil carry a multitude of zoonotic ecto- and endoparasites, posing a considerable risk for humans. With the exception of A. caninum, sensitivity of faecal examination was negligible.

  4. Fragmentos de modelos? Projetos e intervenções na Orla da Avenida Beira-Mar em Fortaleza - CE (1962-2014)

    OpenAIRE

    Vasconcelos, Ana Cecília Serpa Braga

    2015-01-01

    Partindo da necessidade de novas abordagens do Urbanismo, tendo em vista as mudanças econômicas e sociais contemporâneas como a globalização e a crise do Estado do Bem-Estar Social, esta pesquisa trata sobre a apropriação de ideários urbanísticos contemporâneos e suas repercussões nas frentes de água, espaços abertos e lugares privilegiados para intervenções urbanísticas de revalorização, reordenamento, reaproveitamento para novos usos, e de requalificação geral nas últimas décadas. Como obje...

  5. Effets Josephson generalises entre antiferroaimants et entre supraconducteurs antiferromagnetiques

    Science.gov (United States)

    Chasse, Dominique

    L'effet Josephson est generalement presente comme le resultat de l'effet tunnel coherent de paires de Cooper a travers une jonction tunnel entre deux supraconducteurs, mais il est possible de l'expliquer dans un contexte plus general. Par exemple, Esposito & al. ont recemment demontre que l'effet Josephson DC peut etre decrit a l'aide du boson pseudo-Goldstone de deux systemes couples brisant chacun la symetrie abelienne U(1). Puisque cette description se generalise de facon naturelle a des brisures de symetries continues non-abeliennes, l'equivalent de l'effet Josephson devrait donc exister pour des types d'ordre a longue portee differents de la supraconductivite. Le cas de deux ferroaimants itinerants (brisure de symetrie 0(3)) couples a travers une jonction tunnel a deja ete traite dans la litterature Afin de mettre en evidence la generalite du phenomene et dans le but de faire des predictions a partir d'un modele realiste, nous etudions le cas d'une jonction tunnel entre deux antiferroaimants itinerants. En adoptant une approche Similaire a celle d'Ambegaokar & Baratoff pour une jonction Josephson, nous trouvons un courant d'aimantation alternee a travers la jonction qui est proportionnel a sG x sD ou fG et sD sont les vecteurs de Neel de part et d'autre de la jonction. La fonction sinus caracteristique du courant Josephson standard est donc remplacee.ici par un produit vectoriel. Nous montrons que, d'un point de vue microscopique, ce phenomene resulte de l'effet tunnel coherent de paires particule-trou de spin 1 et de vecteur d'onde net egal au vecteur d'onde antiferromagnetique Q. Nous trouvons egalement la dependance en temperature de l'analogue du courant critique. En presence d'un champ magnetique externe, nous obtenons l'analogue de l'effet Josephson AC et la description complete que nous en donnons s'applique aussi au cas d'une jonction tunnel entre ferroaimants (dans ce dernier cas, les traitements anterieurs de cet effet AC s'averent incomplets). Nous

  6. Calidad de vida en adolescentes: Análisis desde las fortalezas personales y las emociones negativas

    OpenAIRE

    Quiceno, Japcy Margarita; Vinaccia, Stefano

    2014-01-01

    El objetivo de este estudio fue comparar las relaciones de las fortalezas personales y las emociones negativas sobre la calidad de vida de 686 adolescentes escolarizados de la ciudad de Bogotá, Colombia, según el sexo y el estrato socioeconómico. Instrumentos: escala de resiliencia adolescente ARS, escala de autotrascendencia adolescente STS, escala subjetiva de felicidad SHS, test de orientación de vida en jóvenes YLOT, inventario de depresión infantil CDI, inventario infantil de estresores ...

  7. Salmonella sp. bacteriology monitoring in laying hens at different growing and laying periods from poultry farms in Metropolitan Region of Fortaleza Monitoramento bacteriológico para Salmonella sp. em poedeira comercial em diferentes fases de recria e produção de empresas avícolas da Região Metropolitana de Fortaleza

    Directory of Open Access Journals (Sweden)

    Emanuella Evangelista da Silva

    2008-07-01

    Full Text Available

    This work aimed to verify Salmonella occurrence in laying hen flocks from eight poultry farms in Metropolitan Region of Fortaleza city. Swab collections were performed in transport boxes of day-old-chicks, totaling 40 feces samples (5 samples/flock, which presented no Salmonella contamination. Bacterial analyses from a pool of feces were performed in the same flocks at 10, 20, 30 and 40 weeks of age. Salmonella enterica rough strain and Salmonella Newport were found in two flocks at 20 and 40 weeks of age, respectively. These results suggest that the birds were infected with Salmonella after their arrival in the poultry farms. It was verified that 25% of the poultry farms presented positive feces samples for Salmonella contamination, indicating the need for a more efficacious preventive program in the poultry farms for egg production. This work suggests that day old birds were of Salmonella contamination which indicates no vertical Salmonella transmission, however the rearing phase present failures regarding bacterial control.

     

    KEY WORDS: Bacteriology, chickens, eggs, feces, Salmonella.

    O presente trabalho objetivou investigar a presença de Salmonella em lotes de poedeiras comerciais de oito empresas da região metropolitana de Fortaleza,CE, Brasil. Realizaram-se suabes em cinco caixas de transporte por lote das oito empresas analisadas, totalizando quarenta amostras de mecônio, sendo todas negativas para Salmonella. Os mesmos lotes (oito foram monitorados na décima, vigésima, trigésima e quadragésima semanas de idade com exame bacteriológico de pool de cem fezes frescas. Foram isoladas Salmonella enterica subsepécie enterica cepa rugosa e Salmonella Newport das amostras de fezes nas empresas 2 e 6 na

  8. Le pilotage et la mesure de l’empreinte sociétale de l’entreprise grâce à la Balanced ScoreCard : entre adaptation et évolution radicale du modèle de Kaplan et Norton

    OpenAIRE

    Crutzen, Nathalie; Van Caillie, Didier

    2007-01-01

    Vu l’intérêt croissant porté par les entreprises aux aspects sociaux et environnementaux, la présente communication propose une revue des principales contributions montrant l’importance et les enjeux de la prise en compte des dimensions sociales et environnementales (de la RSE) dans les systèmes de contrôle de gestion des entreprises. Plus spécifiquement, face aux limites de nombreux outils pour piloter et mesurer adéquatement l’empreinte sociétale des entreprises, ce papier met en évide...

  9. Formação do enfermeiro para detecção precoce de desvios psicomotores em lactentes - Fortaleza, estado do Ceará, Brasil - DOI: 10.4025/actascihealthsci.v25i2.2230 Nurse formation for precocious detection of psychomotor deviations in suckling - Fortaleza, state of Ceará, Brazil - DOI: 10.4025/actascihealthsci.v25i2.2230

    Directory of Open Access Journals (Sweden)

    Maria Teresa Moreno Valdés

    2003-04-01

    Full Text Available Objetivou-se identificar a formação dos enfermeiros para detecção precoce dos desvios psicomotores em lactentes, os fatores que interferem na atuação profissional e elaborar um roteiro para subsidiá-lo. Trata-se de estudo exploratório-descritivo realizado em cinco Unidades do Programa de Saúde da Família (Fortaleza - CE. Foram entrevistados 17 enfermeiros que realizam consulta em puericultura. A coleta dos dados ocorreu de julho a outubro de 2001, por meio de observação e entrevista semi - estruturada. Os dados foram analisados, discutidos e apresentados por meio de Tabelas. Onze enfermeiros consideram-se despreparados para a detecção precoce de tais desvios. Os obstáculos apontados foram: falta de treinamento, tempo reduzido para aperfeiçoamento e carga horária excessiva de trabalho. Os enfermeiros sugerem aperfeiçoamento profissional, associado à melhoria das condições de trabalho e aquisição de material didático e audiovisual para implementação de programas preventivos. Conclui-se ser necessária a implementação de um plano com ações que capacitem o enfermeiro para a detecção precoce desses desvios.This paper aimed to identify nurses formation for precocious detection of psychomotor deviations in suckling, the factors that interfere in their performance and to make a proposal of a schedule to subsidize them. Exploratory-descriptive study was carried out in five Units of Family Health Program, in the city of Fortaleza, state of Ceará, Brazil. Seventeen nurses who had accomplished consultation in puericulture were interviewed. Data were collected from July to October 2001, through observation and semi-structured interview. The data were analyzed, debated, and presented through tables. Eleven nurses considered themselves unprepared for precocious identification of such deviations. The obstacles pointed were: insufficient training, reduced time to improvement and excessive work routine. The nurses suggest the

  10. Teorias médicas e gestão urbana: a seca de 1877-79 em Fortaleza Medical theories and urban management: Fortaleza's 1877-79 drought

    Directory of Open Access Journals (Sweden)

    Maria Clélia Lustosa Costa

    2004-04-01

    Full Text Available Ao longo do século XIX, as novas teorias médicas sobre a origem das doenças influenciaram normas e regulamentos de controle do comportamento da população e do espaço urbano. Neste trabalho, apresentam-se e discutem-se as idéias, práticas médicas e ações administrativas adotadas durante a seca de 1877-79 em Fortaleza, capital da província do Ceará. A seca foi acompanhada de uma epidemia de varíola e do aumento da migração da população sertaneja para a capital. Sem rede de serviços públicos capaz de atender à população de retirantes que se alojaram na cidade e nos arredores, a administração municipal esforçou-se para implementar recomendações dos médicos, baseadas nos modernos princípios de higienização. Demonstra-se, por meio da análise dos relatórios dos presidentes da província e dos inspetores de saúde pública, a influência daquelas teorias médicas sobre as práticas de reorganização urbana, numa situação de calamidade como o de Fortaleza em 1877.Down through the nineteenth century, new medical theories on the origin of disease influenced the norms and regulations that controlled the population's behavior and the urban space. The present study discusses the ideas, medical practices, and administrative initiatives adopted during the 1877-79 drought in Fortaleza, capital of Ceará province. The drought was accompanied by a smallpox epidemic, along with the increased migration of sertão dwellers to the capital. The city lacked a public service network capable of meeting the needs of this new population, which took up lodgings on the city and periphery. The municipal administration endeavored to implement the recommendations of physicians, based on modern principles of hygienization. Through an analysis of reports by the provincial presidents and by public health inspectors, the study intends to show how these medical theories influenced the practices of urban reorganization at a moment of public

  11. Entre/Plantas

    OpenAIRE

    Montoro Coso, Ricardo; Sonntag, Franca Alexandra

    2014-01-01

    La palabra Inter-és proviene etimológicamente de las palabras latinas inter y esse; y significa “lo que está-entre dos o más personas, o sea lo que las une pero también las separa”. Los prefijos inter- y entre-, en la mayor parte de los casos, describen estados o acciones ambiguas de los términos que preceden. De esta operación aditiva surgen maclas de vocablos; el inter-sticio como la “hendidura o espacio que media entre dos cuerpos o entre dos partes de un mismo cuerpo”; y así sucesivamente...

  12. Determinantes do aborto provocado entre mulheres admitidas em hospitais em localidade da região Nordeste do Brasil Determinants of iduced abortion among poor women admitted to hospitals in locality of the region northeast Brazil

    Directory of Open Access Journals (Sweden)

    Walter Fonseca

    1996-02-01

    Full Text Available Com o objetivo de identificar os determinantes do aborto provocado entre mulheres admitidas por complicações decorrentes dos abortos, nos hospitais-maternidades públicos em Fortaleza, CE (Brasil foram entrevistadas 4.359 pacientes entre 1º de outubro de 1992 e 30 de setembro de 1993. Os dados foram coletados através de questionário estruturado. São apresentados os determinantes dos abortos provocados em 2.084 (48% mulheres classificadas como tendo induzido aborto. Dois terços (66% das mulheres relataram a indução do aborto com o uso isolado do Cytotec(R (misoprostol ou associado a outro meio abortivo. Os resultados indicam que, na população estudada, a indução do aborto é prática comum entre jovens, solteiras (ou que vivem sem um parceiro estável, de baixa paridade, com escolaridade incipiente e não-usuárias de métodos contraceptivos. Recomenda-se a realização de estudos que investiguem os conhecimentos relacionados a percepções, conceitos culturais do aborto, e às razões por que mulheres pobres fracassam na adoção de métodos de planejamento familiar.In Brazil, abortion is legally allowed only when it is necessary to save a woman's life or when pregnancy has occurred following rape. Despite this law, iduced abortion is widely carried out. This study presents the findings as to the determinants of 2,084 abortions admitted to two major obstetric hospitals in Fortaleza, Brazil, between October 1992 and September 1993. Most of these women (2,074 have admitted an attempt to terminate pregnancy and 10 women were classified as induced abortion cases based on the findings of signs of intervention such as cervical laceration, perforation or foreign bodies in the vagina or uterus. The study findings indicate that self-administration of medicines plays an important role in terminating pregnancy. Among the 2,074 women who admitted to terminating the pregnancy 66% reported using misoprostol to induce abortion. Misoprostol, a

  13. Opções contraceptivas entre mulheres vivendo com HIV/AIDS

    Directory of Open Access Journals (Sweden)

    Sandra Vasconcelos Batista de

    2004-01-01

    Full Text Available New possibilities for treatment and control of AIDS have reinforced hope for life among patients, in that these circumstances have influenced choices related to family planning. This study of qualitative nature sought to investigate the contraceptive choices used by women carrying HIV or AIDS, as well as their difficulty in using such methods. The subjects studied were 31 HIV-positive women being treated at a public hospital in Fortaleza-CE, in 2003. Of those interviewed, 20 (64% reported being in sexual activity. Of these, 17 (85% informed use of some kind of contraception, such as: male condom (regular and irregular use, coitus interruptus, female sterilization, the rhythm method and abstinence from sex. Two women did not refer to contraceptive measures. The difficulties indicated by women were lack of knowledge of bodily anatomy, lack of safety and confidence in methods, their own difficulty in accepting the method and difficulty in negotiation method with partners.

  14. Lattice dynamics of γ--Ce

    International Nuclear Information System (INIS)

    Gould, T.A.

    1978-08-01

    The phonon and magnetic measurements described in the thesis produced the following significant results concerning the lattice dynamical and magnetic properties of γ-Ce. The phonon spectrum is relatively soft, which is consistent with results obtained for CeSn 3 . The L [110] and T [111] branches of the dispersion curve are anomalous. The C 11 and C 44 elastic constants are quite close in value. No discrete magnetic excitations were observed. The magnetic scattering is qualitatively similar to the results from Ce 0 . 74 Th 0 . 26 , however, GAMMA/sub Ce/ less than GAMMA/sub Ce-Th/. The various lattice dynamical and magnetic similarities among γ-Ce, CeSn 3 , and Ce 0 . 74 Th 0 . 26 are mixed valence compounds. Therefore, a complete theoretical description of the observed properties of Ce and its compounds may provide a basis for understanding a whole class of mixed valence materials

  15. Fortaleza de la Desigualdad y la Violencia: Geopolítica del Miedo y la Anomia Social como Factor de Producción de la Violencia Concentrada y de la Sensación de Inseguridad

    Directory of Open Access Journals (Sweden)

    Laecio Noronha Xavier

    2016-06-01

    Full Text Available Fortaleza/Ceará es la 5ª ciudad en la demografía y 10ª en el PIB. Sin embargo, es la quinta ciudad más desigual del mundo y su tasa de homicidios se ha convertido en la capital más violenta de Brasil, y la segunda ciudad mundial en homicidios. Entre 2007-2014, experimentó casi un retorno al estado de naturaleza con la victimización preferida de los jóvenes y negros. Geopolíticamente, el miedo y la anomia han encarcelado a sus habitantes en una ciudad de las paredes, alimentado la violência y la sensación de inseguridad y ha actuado en contra de las poblaciones periféricas.

  16. Calangos e lagartixas: concepções sobre lagartos entre estudantes do Ensino Médio em Fortaleza, Ceará, Brasil

    Directory of Open Access Journals (Sweden)

    Daniel Cunha Passos

    2015-03-01

    Full Text Available As concepções culturais influenciam as atitudes humanas em relação aos animais, e sua compreensão é essencial para se entender o impacto dos seres humanos sobre a fauna. Neste trabalho, inventariamos concepções sobre lagartos segundo estudantes dos estágios finais da Educação Básica, avaliando sua relação com o atual estado do conhecimento científico e interpretando os casos em discordância. Realizamos entrevistas com estudantes do terceiro ano do Ensino Médio sobre aspectos gerais relacionados a concepções, conhecimentos e usos tradicionais de lagartos. Entrevistamos 38 estudantes que compartilharam 85 concepções distintas. Embora muitas das concepções inventariadas tenham apresentado coerência com os conhecimentos científicos atuais, existiram algumas incongruências. De forma geral, os produtos desta pesquisa forneceram subsídios para a valorização dos lagartos, além de reforçar a necessidade da inclusão de ações de educação ambiental na Educação Básica, como ferramentas para enriquecer o conhecimento sobre a biodiversidade, bem como esclarecer e desmistificar possíveis concepções errôneas.

  17. REESTRUTURAÇÃO PRODUTIVA E RECONFIGURAÇÃO DA ÁREA CENTRAL DE FORTALEZA

    Directory of Open Access Journals (Sweden)

    José Borzacchiello da Silva

    2015-01-01

    Full Text Available The text discusses the metropolitan theme from the perspective of productive restructuring, especially the spatial transformations and the reconfiguration of the central area of Fortaleza. The focus is placed upon the comprehension of the social-spatial processes in their configuration with fragments, residues and new centralities, which testify to the process of production of the city in the light of property restructuring as a strategy for the reproduction of capital. The hegemony of financial capital and of the national and transnational construction companies reinforces mechanisms of social-spatial reproduction altering the urban structure and the expansion of the urban sprawl. This text confirms the significance and importance of the condominiums, walled properties and shopping malls which alter the price of urban land and modify, above all, the use of the soil.

  18. Knowledge of pharmacists about breastfeeding: a study in commercial pharmacies of Fortaleza – Ceará - Brazil

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    Luzia Izabel Mesquita Moreira da Silva

    2012-12-01

    Full Text Available Objective: To evaluate the knowledge of pharmacists who work in commercial pharmacies in Fortaleza, Ceará, Brazil, about breastfeeding. Methods: This was an observational, descriptive and transversal study. We used a questionnaire approaching the profile of pharmacists and general knowledge about breastfeeding and Brazilian Standard for Marketing of Food for Infants and Young Child, teats, dummies and Bottles (BSMFI. Data collection occurred from January to March 2011. Through drawing, we selected 82 commercial pharmacies, corresponding to 15.5% of all pharmacies in Fortaleza, when held up contact with their pharmacists. The questionnaire was administered to 67 pharmacists. The results were statistically analyzed using the Epi Info v. And v 3.5.1 SigmaPlot. 10.0. Results: Among the participants, 72% (n = 48 were female, 35.8% (n = 24 are formed over ten years, 49.3% (n = 33 working in pharmacy business for less than five years, and 52.2% (n = 35 engaged in professional activity at other establishments. The level of knowledge was rated as fair to 71.7% (n = 48 of respondents; insufficient to 17.9% (n = 12 and good for 10.4% (n = 07. This low performance, not reaching the maximum score, was associated with exercise time in the profession, noting that trained professionals for more than ten years had lower knowledge. Conclusion: Respondents recognize the importance of breastfeeding for both the baby’s health as for the mother. However, they lack knowledge of relevant information concerning the correct management of breastfeeding, especially among those who graduated earlier.

  19. Magnetic behaviour of cerium in Ce2 Sn5 and Ce3 Sn7, surstructures of Ce Sn3

    International Nuclear Information System (INIS)

    Stunault, A.

    1988-07-01

    The compound studied, Ce 2 Sn 5 and Ce 3 Sn 7 are both orthorhombic, surstructure of cubic Ce Sn 3 . Magnetic susceptibility measurements show in both compounds an antiferromagnetic order at low temperature and magnetization shows a high anisotropy. Magnetization densities are determined by polarized neutron diffraction. The cerium site which has two Ce atoms as nearest neighbourgs carries all the magnetism in both structures. For Ce 2 Sn 5 moments are directed as the high magnetization axis and structure is modulated. Ce 3 Sn 7 presents a simple antiferromagnetic order but moment are directed as low magnetization axis. Various transitions towards a ferromagnetic order are presented. Results are interpreted by measuring the difference between energy levels of crystalline field. A model of crystalline field and isotrope exchange agrees well with Ce 3 Sn 7 , but for Ce 2 Sn 7 it is necessary to reduce the magnetic moment which is typical of the Kondo effect [fr

  20. Fortalezas de papel : La ciencia expuesta a la comunicación pública

    OpenAIRE

    Mazzaro, Cecilia

    2008-01-01

    Entre los conceptos de divulgación, difusión y diseminación existen diferencias ya clásicas establecidas en el campo de la comunicación por Antonio Pasquali. Para este autor venezolano, difusión es el envío de mensajes elaborados en códigos o lenguajes universalmente comprensibles, a un determinado (geográfica, sociopolítica, culturalmente) universo receptor; la divulgación es el envío de mensajes elaborados mediante la transcodificación de lenguajes crípticos a lenguajes comprensibles por to...

  1. Freqüência e atividade enzimática de Candida spp. na cavidade oral de pacientes diabéticos do serviço de endocrinologia de um hospital de Fortaleza-CE Frequency and enzymatic activity of Candida spp. oral cavity of diabetic patients of the service of endocrinology of a hospital of Fortaleza-CE

    Directory of Open Access Journals (Sweden)

    Everardo Albuquerque Menezes

    2007-08-01

    Full Text Available O diabetes mellitus (DM, uma doença endócrino-metabólica de alta e crescente prevalência, é citada como responsável pela ocorrência das candidíases orais. A candidíase constitui um espectro de infecções causadas por fungos do gênero Candida, sendo o seu agente mais comum a Candida albicans, embora outras espécies tenham sido identificadas (Candida tropicalis, Candida guillermondii, Candida glabrata, Candida krusei. O objetivo deste trabalho foi avaliar a freqüência e a atividade enzimática de Candida spp. na cavidade oral de pacientes diabéticos atendidos no Serviço de Endocrinologia do Hospital Universitário Walter Cantídio da Universidade Federal do Ceará (HUWC/UFC. Foram coletadas amostras de 48 pacientes diabéticos, de ambos os sexos, com situações variáveis de controle glicêmico. Os materiais clínicos foram colhidos com ajuda de swabs e semeados em placas de Petri contendo ágar-Sabouraud dextrose com cloranfenicol e incubado a 37°C. Os crescimentos foram identificados pelas provas clássicas usadas em micologia. Depois, essas cepas de Candida foram submetidas a provas de detecção de enzimas fosfolipase e proteinase. Destas, 15 amostras (31,25% apresentaram cultura positiva para o gênero Candida. A espécie mais freqüente foi a C. albicans, com 80%, seguida de C. tropicalis (13,3% e C. guillermondii (6,7%. Quanto à pesquisa da atividade enzimática de Candida spp., foi observado que 86,6% delas apresentaram atividade de proteinase e 80%, de fosfolipase. Conclui-se com tais resultados que a C. albicans é a mais freqüente e que as espécies de Candida isoladas possuem fortes atividades enzimáticas.Diabetes mellitus, a endocrine-metabolic disease, of high and increasing prevalence, is cited as responsible by the occurrence of oral candidiasis. Candidiasis constitutes a specter of infections caused by fungi of genera Candida; the most common agent is Candida albicans, but other species have also been identified (Candida tropicalis, Candida guillermondii, Candida glabrata, Candida krusei. The objective of this work was to evaluate frequency and enzymatic activity of Candida spp. in the oral cavity of diabetic patients taken care in the service of endocrinology of the University Hospital Walter Cantídio of the Federal University of the Ceará. Samples had been collected of 48 diabetic patients, men and women, with various situations of glicemic control. Clinical materials had been collected with aid of swab and harvested in plates of Petri contend Sabouraud agar dextrose with cloranfenicol and incubated to 37°C. The grown were identified by the used classic tests in mycology. In the following, these Candida strains were submitted to tests to detect phospholipase and proteinase enzymes. Of these, 15 samples (31,35% presented positive culture for the genera Candida. The species more frequent was C. albicans with 80%, followed by C. tropicalis (13.3% and C. guilliermondii (6.7%. Asfor the research on the enzymatic activity of Candida sp. it was observed that 86.6% presented activity of proteinase and 80% of phospholipase. It was concluded with these results that C. albicans is more frequent and that Candida spp. isolated species have strong enzymatic activity.

  2. Superdeformed bands in 130Ce

    International Nuclear Information System (INIS)

    Paul, E.S.; Semple, A.T.; Boston, A.J.; Joss, D.T.; Nolan, P.J.; Shepherd, S.L.

    1997-01-01

    Four superdeformed bands have been assigned to 130 Ce following a high-statistics γ-ray study using the EUROGAM II spectrometer. The strongest band exhibits two distinct backbends which, in one scenario, may be interpreted as crossings between high-j N = 6 neutron orbitals (νi 13/2 ) and low-j N = 4 orbitals (νd 3/2 ) in an unpaired system. (author)

  3. Investigação dos efeitos da hidroginástica sobre a qualidade de vida, a força de membros inferiores e a flexibilidade de idosas: um estudo no Serviço Social do Comércio - Fortaleza An investigation into the effects of hydro gymnastics on the quality of life, strength of limbs and the flexibility of elderly women: a study on the Chamber of Commerce Social Services - Fortaleza

    Directory of Open Access Journals (Sweden)

    Jaina Bezerra de Aguiar

    2009-12-01

    Full Text Available Este trabalho, realizado no Serviço Social do Comércio, Fortaleza, CE, Brasil, teve como propósito verificar a influência da hidroginástica sobre a qualidade de vida, a força de membros inferiores e a flexibilidade de idosas. Foram avaliadas 26 mulheres com idade de 60 a 80 anos, que foram divididas em dois grupos: sedentário (n=13 e praticante de hidroginástica há pelo menos seis meses (n=13. Foram utilizados para coleta de dados o Instrumento Abreviado de Avaliação da Qualidade de Vida proposto pela Organização Mundial de Saúde, o teste de impulsão vertical para a avaliação indireta da força muscular de membros inferiores e o teste de sentar e alcançar para avaliação da flexibilidade. O grupo praticante de hidroginástica apresentou média de escores do domínio físico da qualidade de vida (4,5 ± 0,4 u.a. significativamente (p This study was carried out at the Chamber of Commerce Social Services in the city of Fortaleza, CE, Brazil. Its aim was to test the effects of hydro gymnastics on elderly women general flexibility, limb strength and overall quality of life. Two groups consisting of thirteen women aged between sixty and eighty were evaluated. One group was a sedentary group and the other group had actively participated in hydro gymnastics for a minimum of six months. This research was used for "The Assessment on the Quality of Life" report proposed by the World Health Organization. Two tests were carried out within this study. The vertical jump test, as an indirect evaluation of muscular strength, and the sit-and-reach test evaluated flexibility. The findings were as follows: The hydro gymnastics group presented a higher score for the quality of life physical domain (4.5 ± 0.4 a.u. significantly (p < 0.05 than the sedentary group (3.8 ± 0.7 a.u., and for vertical jumping height (13.8 ± 3.7 cm and 10.5 ± 2.7 cm, respectively; p < 0.05 and flexibility test (41.3 ± 9.2 cm and 32.7 ± 4.6 cm, respectively; p < 0

  4. Etiology of canine otitis media and antimicrobial susceptibility of coagulase-positive Staphylococci in Fortaleza city, Brazil Etiologia da otite média canina e susceptibilidade a antimicrobianos de Staphylococcus coagulase-positiva em Fortaleza, Brasil

    Directory of Open Access Journals (Sweden)

    Lis Christina de Oliveira

    2006-06-01

    Full Text Available This study evaluated the middle ear microbiota and antimicrobial susceptibility patterns from strains isolated from dogs with otitis media. A total of 62 dogs obtained from Zoonoses Control Center of Fortaleza City Ceará State / Brazil were studied over a 10-month period (August/2003 to June/2004. Of the total, 46.8% (n=30 of the animals were positive for otitis media and the infection was monomicrobial in 76.6% of them. The most frequent isolated agents were coagulase-positive Staphylococci (CPS-55% and Pseudomonas sp (10%. For S. intermedius (n=13 and S. aureus subsp aureus (n=9, respectively, the greater resistance rates were observed using penicillin G (30.76% and 44.44%, ampicillin (7.69% and 44.44%, erythromycin (23.07% and 44.44%, clindamycin (23.07% and 44.44% and thrimethropim/sulfamethoxazol (15.38% and 33.33%.O presente trabalho avaliou a microbiota do ouvido médio e os perfis de susceptibilidade a antimicrobianos de cepas isoladas de cães com otite média. Um total de 62 cães obtidos no Centro de Controle de Zoonoses de Fortaleza Ceará / Brasil foram estudados no período de 10 meses (agosto/2003 a junho/2004. Do total de animais, 46.8% (n=30 foram positivos para otite media e a infecção envolvida era monomicrobiana em 76,6% dos casos. Os agentes isolados com maior frequência foram Staphylococcus coagulase-positiva (CPS-55% e Pseudomonas sp (10%. Considerando-se S. intermedius (n=13 e S. aureus subsp aureus (n=9, respectivamente, as mais elevadas taxas resistência foram observadas frente a: penicilina G (30,76% e 44,44%, ampicilina (7,69% e 44,44%, eritromicina (23,07% e 44,44%, clindamicina (23,07% e 44,44% e trimetropim/sulfametoxazol (15,38% e 33,33%.

  5. Magnetic behaviour of new Ce compounds

    Energy Technology Data Exchange (ETDEWEB)

    Sampathkumaran, E V [Tata Inst. of Fundamental Research, Bombay (India); Mallik, R [Tata Inst. of Fundamental Research, Bombay (India)

    1996-07-01

    We report initial results of our investigation on the magnetic behaviour of some new Ce compounds. The compounds, CeIr{sub 2}B{sub 2}C and CeIr{sub 2}Ge{sub 2}, do not appear to exhibit bulk magnetic ordering down to 2 K. The alloys, Ce{sub 2}Pd{sub 2}In and Ce{sub 2}Cu{sub 2}In, order magnetically below 4 and 6 K, respectively, and a marginal change in the Pd(Cu)/In composition does not significantly influence the ordering temperatures. (orig.).

  6. Auditoria farmacêutica: estudo de caso em uma operadora de planos de saúde de Fortaleza (Brasil

    Directory of Open Access Journals (Sweden)

    Henry Pablo Lopes Campos e Reis

    2013-04-01

    Full Text Available O objetivo do estudo foi descrever a implantação, estruturação e desenvolvimento da prática de auditoria farmacêutica em uma operadora de planos de saúde de Fortaleza (OPS. Trata-se de um estudo descritivo do tipo estudo de caso, em que a unidade de análise foi uma OPS localizada em Fortaleza, capital do estado do Ceará (Brasil. Foram coletados e analisados dados qualitativos e quantitativos que corresponderam ao período de 2007 a 2010. Para a implantação da área de auditoria farmacêutica foi utilizada como primeira estratégia sua formalização na Diretoria de Recursos Médicos Hospitalares e na estrutura organizacional da OPS em janeiro de 2007. Com o reconhecimento do trabalho desenvolvido pela área, a equipe chegou em 2010 com dois farmacêuticos, dois assistentes de farmácia e cinco estagiários. O desenvolvimento da prática de auditoria farmacêutica resultou na exigência de pareceres técnicos para inclusão de medicamentos em tabela definida pela OPS e de solicitação para medicamentos de alto custo e de reserva terapêutica. A intervenção do farmacêutico, em seis meses de experiência, junto a pacientes em uso de antimicrobianos mostrou uma economia de R$ 279.153,80. A gestão de quimioterápicos resultou em uma economia total de R$ 2.502.278,31 para a OPS em 2009. Embora a auditoria farmacêutica envolva uma discussão recente, é preciso desde já, que aspectos relacionados à sua implantação, estruturação e desenvolvimento sejam apoiados, uma vez que essa prática ajuda na descrição e análise de elementos assistenciais e de gestão que envolve pacientes em tratamento farmacológico.

  7. Archiver ce qui aurait pu avoir lieu

    Directory of Open Access Journals (Sweden)

    Stefanie Baumann

    2009-12-01

    Full Text Available L’Atlas Group, un projet de l’artiste libanais Walid Raad, est « dédié à la recherche et la compilation de documents sur l’histoire contemporaine libanaise. L’Atlas Group produit, localise, conserve et étudie des documents visuels, sonores, textuels et autres, qui mettent en lumière l’histoire actuelle du Liban. »Ce projet est ainsi présenté comme une fondation qui génère des archives historiques et qui collecte des traces relevant de la guerre au Liban afin de les mettre à disposition aux chercheurs. Mais, les matériaux sont produits par l’artiste : l’archive est imaginaire, les documents et récits sont inventés, ainsi que le Docteur Fakhouhi, le personnage principal, présenté comme étant « le plus renommé des historiens au Liban ». Le spectateur se trouve alors devant un scénario très étrange dans lequel sont détournées les notions de document (qui peut désormais être aussi bien trouvé que produit et d’histoire (car les situations décrites sont considérées comme « ayant très bien pu avoir eu lieu », l’Atlas Group  les traite comme de véritables événement historiques et qui déplace, mine de rien, tout un dispositif. Au sein de ce projet, la frontière entre fiction et documentaire est complètement estompée : le geste de l’artiste (qui, lui, se présente comme une institution, un « Groupe », interroge ainsi le statut même d’auteur vise à la déplacer pour poser des questions relatives aux représentations possibles de l’histoire, aux personnes aptes à se charger de son écriture et à l’opération historiographique.

  8. Convivencia escolar: fortaleza de la comunidad educativa y protección ante la conflictividad escolar

    Directory of Open Access Journals (Sweden)

    Rosario Del Rey

    2009-01-01

    Full Text Available El concepto de convivencia tiene un claro significado positivo y se relaciona con los principios básicos de la educación. Sin embargo, cuando se analiza la convivencia, en muchas ocasiones, se hace en base a los problemas que le afectan más que en los pilares en los se fundamenta, dando así una visión negativa que no siempre se corresponde con la realidad de las escuelas. En este artículo, se presenta un estudio realizado con la intención de comprobar que la calidad de la convivencia es positiva según estudiantes, docentes y familias de alumnos y alumnas, así como indagar sobre las claves, que según estos tres colectivos, definen una excelente convivencia. Entre los resultados encontrados podemos mencionar que, tal y como esperábamos, la convivencia escolar es percibida, por los tres colectivos que la integran, como una dinámica relacional positiva aunque en ella existe cierto grado de conflictividad.

  9. Distribuição das mutações da β-talassemia em Fortaleza, Ceará Distribution of β-thalassemia mutations in Fortaleza, Ceará

    Directory of Open Access Journals (Sweden)

    Lilianne Brito da Silva Rocha

    2010-12-01

    Full Text Available INTRODUÇÃO: As mutações IVS-I-1, IVS-I-6 e CD 39 foram estudadas em 14 pacientes portadores de β-talassemia, da população de Fortaleza, capital do Ceará. OBJETIVO: Fornecer informações sobre a caracterização molecular dos pacientes β-talassêmicos de Fortaleza, contribuindo para traçar o perfil das mutações desta hemoglobinopatia na região Nordeste e no Brasil. MÉTODOS: A β-talassemia foi diagnosticada pelo estudo hematológico realizado no contador automático de células sanguíneas, com revisão de lâminas, pelo teste de resistência globular osmótica em NaCl a 0,36% e pela eletroforese em pH alcalino em fitas de acetato de celulose. O DNA foi isolado de leucócitos a partir de amostras de sangue total. A análise das mutações foi realizada por meio da técnica da reação em cadeia mediada pela polimerase alelo-específica (PCR-AE, sendo analisadas as mutações CD 39, IVSI-1, IVSI-6 e IVSI-110 seguindo-se o protocolo do Laboratório de Hemoglobinas e Genética das Doenças Hematológicas (LHGDH da Universidade Estadual Paulista (UNESP. RESULTADOS: A distribuição das mutações identificadas foi: IVS-I-1 (14,3%, IVS-I-6 (35,7% e CD 39 (21,4%. Os demais talassêmicos (28,6% não apresentaram nenhuma das mutações estudadas. A maior frequência da mutação IVS-I-6 está conforme o esperado, uma vez que estudos demonstram que esta mutação está mais presente na região Nordeste, assim como a mutação IVS-I-1 na região Sul e a IVSI-110 e CD39 na região Sudeste do país. CONCLUSÃO: Esses resultados demonstram o perfil das mutações da β-talassemia na região Nordeste, contribuindo, assim, para o estudo da distribuição destas mutações no Brasil.INTRODUCTION: IVS-I-1, IVS-I-6 and CD 39 mutations were studied in 14 patients with β-thalassemia from the population of Fortaleza, capital of Ceará. OBJECTIVE: To provide information on the molecular characterization of β-thalassemia patients from Fortaleza, aiding

  10. Processos co-evolutivos entre dança e crítica: de um contexto cearense a uma crítica contemporânea de dança

    OpenAIRE

    Arrais, Joubert de Albuquerque

    2013-01-01

    O presente estudo tem por objetivo apresentar uma outra moldura teórica e indisciplinar sobre o exercício da crítica especializada, com uma análise da dinâmica operativa da dança contemporânea em Fortaleza (CE), a partir do conceito evolutivo de "corrida armamentista", do cientista Richard Dawkins, e com o pressuposto de que a "dança é um sistema co-evolutivo", desenvolvido pela pesquisadora Fabiana Dultra Britto. O período escolhido inicia-se na segunda metade dos anos noventa...

  11. Knowledge about genetically modified food: a study with supermarket clients situated in noble area of Fortaleza city - doi:10.5020/18061230.2004.p72

    OpenAIRE

    Paola Gondim Calvasina; Cíntia Maria Torres Rocha Silva; Gilka de Albuquerque Forte Aguiar; Milena Rebouças Aguiar; Helena Alves de Carvalho Sampaio

    2012-01-01

    The transgenic foods had appeared as result of the scientific and technological advances of genetic engineering applied to agriculture, configuring themselves in a current quarrel and sufficient controversy, about how much the benefits and curses brought to the consumers and the proper environment. In this intention, this study has as objective to verify the level of knowledge of customers of a supermarket of the noble area of the city of Fortaleza, on the thematic of the transgenic. Question...

  12. Consulta de enfermagem: análise das ações junto a programas de hipertensão arterial, em Fortaleza Consultas de enfermeria: analisis de las actividades desarrolladas en las de los programas de hipertensión arterial de Fortaleza Nursing consultation: analysis of the actions developed by a hypertension program in the city of Fortaleza

    Directory of Open Access Journals (Sweden)

    Isabel Cristina Filgueira Maciel

    2003-03-01

    Full Text Available A atuação da enfermeira nos Programas de Hipertensão e Diabetes tem se mostrado importante, abordando aspectos relativos às doenças e ao paciente, holisticamente. A consulta de enfermagem é um momento ímpar dessa abordagem. Estudo descritivo-exploratório, visa investigar as atividades desenvolvidas nas Consultas de Enfermagem realizadas nos Programas de Hipertensão Arterial implantados no município de Fortaleza-Ceará. Os dados foram coletados de março a maio de 1999, com 14 enfermeiras que trabalham nesses serviços e analisados à luz do referencial de Análise de Conteúdo de Bardin, contemplando a técnica de Análise Categorial. Os resultados mostraram que a consulta de enfermagem ainda é realizada de forma muito centrada na consulta médica, baseada, portanto, no modelo médico curativo tradicional. As atividades desenvolvidas pelas enfermeiras restringem-se à anamnese, exame físico sumário e orientações sobre dieta, medicamentos, caminhadas e uso de chás. Nas consultas, predomina o atendimento individual, sem considerar a família e abordagens grupais.La actuación de la enfermería en los programas de hipertensión y diabetes es importante, porque abarca los aspectos referentes a la enfermedad y también el paciente holísticamente. Estudio descriptivo exploratorio que pretende investigar las actividades desarrolladas en las Consultas de Enfermería realizadas en los Programas de Hipertensión Arterial implantados en el municipio de Fortaleza-Ceará. Los datos fueron recogidos de marzo a mayo de 1999, con 14 enfermeras que trabajan en estos servicios fueron analizados siguiendo el análisis de contenido de Bardin, que contempla la técnica de análisis por categorías. Los resultados mostraron que la consulta de enfermería aún es realizada de forma centrada en la consulta médica, por lo tanto, aún basada en el modelo médico curativo tradicional. Las actividades desarrolladas por las enfermeras se restringen a

  13. Geography, population, demography, socioeconomic, anthropometry, and environmental status in the MAL-ED cohort and case-control study Sites in Fortaleza, Ceará, Brazil.

    Science.gov (United States)

    Lima, Aldo A M; Oriá, Reinaldo B; Soares, Alberto M; Filho, José Q; de Sousa, Francisco; Abreu, Cláudia B; Bindá, Alexandre; Lima, Ila; Quetz, Josiane; Moraes, Milena; Maciel, Bruna; Costa, Hilda; Leite, Alvaro M; Lima, Noélia L; Mota, Francisco S; Di Moura, Alessandra; Scharf, Rebecca; Barrett, Leah; Guerrant, Richard L

    2014-11-01

    The Etiology, Risk Factors and Interactions of Enteric Infections and Malnutrition and the Consequences for Child Health and Development (MAL-ED) cohort in the study's Fortaleza, Brazil, catchment area has a population of approximately 82 300 inhabitants. Most of the households (87%) have access to clean water, 98% have electricity, and 69% have access to improved toilet/sanitation. Most childbirths occur at the hospital, and the under-5 mortality rate is 20 per 1000 live births. The MAL-ED case-control study population, identified through the Institute for the Promotion of Nutrition and Human Development (IPREDE), serves 600 000 inhabitants from areas totaling about 42% of the city of Fortaleza. IPREDE receives referrals from throughout the state of Ceará for infant nutrition, and provides services including teaching activities and the training of graduate students and health professionals, while supporting research projects on child nutrition and health. In this article, we describe the geographic, demographic, socioeconomic, anthropometric, and environmental status of the MAL-ED cohort and case-control study populations in Fortaleza, Brazil. © The Author 2014. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.

  14. Nickel Contact Dermatitis in Fortaleza, Ceará, Brazil: 1993-1994

    Directory of Open Access Journals (Sweden)

    Maria José N. DIÓGENES

    1997-09-01

    Full Text Available This work consists in an evaluation of the occurrence of nickel contact dermatitis, its distribution between sexes and in which parts of the body the dermatitis usually occurs. It was accomplished a two year (1994-1995 retrospective study of 404 patch-tested patients which had previous clinical diagnosis of contact dermatitis. The occurrence of nickel sensitisation was 19,8%. 88,8% of these 19,8% were women and the rest, 11,2%, were men. The lesions were present predominantly on hands, forearms, earlobes and feet. The authors comment about possible variations of occurrence of nickel contact dermatitis in rural areas and/or tropical countriesEste trabalho consiste numa avaliação da ocorrência de dermatite de contato por níquel num País Tropical, da sua distribuição entre os sexos e da determinação da topografia anatômica mais acometida. Um estudo retrospectivo e seqüencial por dois anos (1994-1995 foi realizado em 404 indivíduos que tinham dermatite de contato como hipótese clínica e que foram submetidos ao teste de contato ou "patch test". A ocorrência de sensibilização ao níquel foi 19,8%, 88,8% dos quais eram mulheres e o restante, 11,2%, eram homens. As lesões localizavam-se predominantemente nas mãos, antebraços, lóbulos auriculares e pés. Os autores comentam sobre possíveis variações na ocorrência de dermatite de contato por níquel nas áreas rurais e/ou nos países tropicais

  15. Padrão alimentar de lactentes residentes em áreas periféricas de Fortaleza

    Directory of Open Access Journals (Sweden)

    SOARES Nadia Tavares

    2000-01-01

    Full Text Available Este estudo caracterizou o padrão alimentar de 96 crianças menores de um ano assistidas pelo Fundo Cristão para Crianças nos bairros Álvaro Weyne e Presidente Kennedy, na cidade de Fortaleza, Brasil. Os dados foram levantados por meio de entrevista domiciliar, utilizando o método recordatório 24h para conhecimento das quantidades dos alimentos consumidos, e um formulário contendo perguntas estruturadas sobre a prática do aleitamento materno e idade de introdução dos alimentos de desmame. Os resultados indicaram que o aleitamento materno misto predomina (68% sobre o aleitamento artificial (32% e exclusivo (10% e que 7% das crianças nunca receberam leite materno. Porém, até o final do décimo mês de vida, 53% das crianças ainda são amamentadas. Mingau lácteo, preparado com leite de vaca não modificado, constitui a alimentação básica de desmame. Do ponto de vista nutricional, as dietas são desbalanceadas, sendo o ferro o nutriente mais deficiente. Devem ser intensificados os esforços na promoção da alimentação infantil apropriada.

  16. PERFIL DOS PACIENTES ATENDIDOS EM CRISE HIPERTENSIVA EM UM SERVIÇO DE URGÊNCIA DE FORTALEZA

    Directory of Open Access Journals (Sweden)

    RHANNA EMANUELA FONTENELE LIMA

    2005-01-01

    Full Text Available Se ha objetivado caracterizar, a partir del análisis de registros de atención de emergencia, el perfil de los pacientes atendidos con crisis de hipertensión en un hospital municipal de Fortaleza-en enero y febrero de 2002-donde se han investigado las características de sexo, rango de edad, turno con mayor frecuencia de atención en relación con crisis de hipertensión y remedios indicados durante la crisis. Los resultados muestran que la atención en clínicas médicas fue elevada (un 5%; más homogénea en los tres períodos, acometiendo desde personas jóvenes (20 años hasta aquellas con más de 90 años de edad, principalmente mujeres (un 64,4%, independiente de la edad de las mismas. Los remedios más usados fueron los inhibidores de la enzima modificadora de angiotensina (un 62,3% y los diuréticos de elevación (un 57,1%.

  17. Vaccination status of people living with HIV/AIDS in outpatient care in Fortaleza, Ceará, Brazil

    Directory of Open Access Journals (Sweden)

    Gilmara Holanda da Cunha

    2016-09-01

    Full Text Available Antiretroviral therapy has increased the survival of patients with HIV/AIDS, thus necessitating health promotion practice with immunization. Vaccines are critical components for protecting people living with HIV/AIDS (PLWHA. The purpose of study was to analyze the vaccination status of PLWHA in outpatient care in Fortaleza, Ceará, Brazil. Cross-sectional study performed from June 2014 to June 2015. The screening was done with patients in antiretroviral therapy, 420 patients underwent screening, but only 99 met the inclusion criteria. Data were collected for interviews using forms to characterize sociodemographic, clinical and vaccination situations. Only 14 patients had complete vaccination schedules. The most used vaccines were hepatitis B, influenza vaccine and 23-valent pneumococcal. There was no difference between men and women regarding the proportion of PLWHA with full vaccination schedule or between sex, skin color, marital status, sexual orientation, religion or occupational status. There was no difference between having or not having a complete vaccination schedule and age, years of education, family income or number of hospitalizations. CD4+ T-cells count of patients with incomplete immunization was lower than patients with complete immunization. Health education strategies can be done individually or in groups to explain the importance of vaccination and to remind about doses to be administered. Most patients did not have proper adherence to vaccination schedules, especially due to lack of guidance. Results implied that education in health is important for vaccination adhesion, knowledge of adverse events and continuation of schemes.

  18. Surveillance of occupational accidents by sentinel workers' health centers in the municipality of Fortaleza, Northeast of Brazil.

    Science.gov (United States)

    Ferreira, Marcelo José Monteiro; Lima, Romênia Kelly Soares de; Silva, Ageo Mário Cândido da; Bezerra, José Gomes; Cavalcanti, Luciano Pamplona de Góes

    2017-10-01

    This article examines the factors associated with the notification of occupational accidents by sentinel workers' health centers in the municipality of Fortaleza in the northeast of Brazil. An analytical cross-sectional study was conducted of five sentinel workers' health centers for serious and fatal occupational accidents. A total of 354 interviews were conducted with professionals responsible for notifying occupational accidents. Bivariate analysis was conducted using Pearson's chi-square test and/or Fisher's exact test using prevalence ratios and 95% confidence intervals, followed by stratified analysis and multivariate Poisson regression adopting the stepwise forward method. Variables that obtained a p-value of less than or equal to the chosen significance level (0.05) were maintained in the final model. Professionals who had a greater number of years of work experience, had undertaken three training courses, had knowledge of policy directives concerning occupational accidents, were familiar with the SINAN notification form, were aware that occupational accidents are reportable, and discussed the theme of occupational accidents in the workplace were statistically more likely to notify occupational accidents. Education and training helps raise awareness among health professionals.

  19. PRODUÇÃO DO ESPAÇO METROPOLITANO DE FORTALEZA E A DINÂMICA INDUSTRIAL

    Directory of Open Access Journals (Sweden)

    Alexsandra Maria Vieira Muniz

    2015-01-01

    Full Text Available El periodo técnico-científico-informacional actual es basilar para la comprensión de la reestructuración urbana e industrial, así evidenció en este estudio las metamorfosis en el espacio metropolitano de Fortaleza, en curso en las últimas décadas, con énfasis en el proceso de industrialización, reflejo de las políticas públicas y privadas que crean las condiciones favorables para la reproducción expandido del capitalismo. Con la pregunta guía sobre cómo la industrial actividad participa en la producción del espacio metropolitano, pasando la cuestión de la gestión y la planificación de este espacio y el papel del Estado, utilizamos datos secundarios, en particular el Instituto de Investigaciones Económicas y Estrategias de Ceará (IPECE,Instituto Brasileño de Geografía y Estadística (IBGE y la Federación de Industrias del Estado de Ceará (FIEC,los cuales sumado a la investigación de campo y la literatura permitió analizar los resultados resaltados.

  20. EPR study of concentration dependence in Ce, Ce : La and Ce:Y doped SrF2

    NARCIS (Netherlands)

    Dankert, O.; Vainchtein, David; Datema, H.C.; den Hartog, Hendrik

    1995-01-01

    Experimental results of an EPR-study of the concentration dependence of the doubly integrated intensity and linewidth of the signals associated with tetragonal Ce3+-F--dipoles in Sr1-xCexF2+x, Sr-1-0.005-x Ce0.005LaxF2+0.005+x and Sr-1-0.005-x Ce0.005YxF2+0.005+x are presented. Both show a nonlinear

  1. Soutien aux collaborations entre pairs de l'Initiative Think tank et du ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    L'Initiative Think tank (ITT) et le Think Tank Fund (TTF) s'associent pour soutenir des collaborations entre pairs entre les think tanks établis dans les régions où oeuvrent l'ITT (Afrique, Amérique latine et Asie du Sud) et le TTF (Europe centrale, Europe de l'Est et ancienne Union soviétique). Ce soutien a pour objectif de ...

  2. Out-patient drug treatment of pneumonia among children under two years of age in Fortaleza, Brazil Tratamento ambulatorial das pneumonias nas crianças menores de dois anos em Fortaleza, Brasil

    Directory of Open Access Journals (Sweden)

    Chizuru Misago

    1997-01-01

    Full Text Available Results are reported from a study on drug use in treatment of children with pneumonia in a pediatric hospital in the city of Fortaleza, Northeastern Brazil. There were 171 out-patients; prescription details were obtained for 149. The most commonly prescribed antimicrobial drug was procaine penicillin, accounting for 33% of antimicrobial prescriptions, followed by benzathine penicillin (31%, ampicillin or amoxicillin (12%, and cotrimoxazole (8%. Benzathine penicillin was frequently given with other drugs, but was the sole antimicrobial agent for 31 children. Compliance with antimicrobial treatment was 52% overall and was higher for the injectables. Prescription patterns varied from child to child, and children were often prescribed more than one antimicrobial in the same or repeat prescriptions; combining this information with compliance, 81 (54% of the children were estimated to have received 5 or more days of appropriate antimicrobial treatment for pneumonia. This percentage is not high, and five days were often reached after using more than one antimicrobial and after repeat visits. The authors concluded that the need remains for simple antimicrobial regimes, attractive to comply with, that can be expected to be consistently used. Other drugs were chiefly analgesics and bronchodilators.Estudou-se a aderência ao tratamento de pneumonia em crianças, em serviço ambulatorial de hospital pediátrico em Fortaleza, Brasil. Foram investigadas 171 crianças com diagnóstico de pneumonia. Através de questionário foram coletadas informações referentes à prescrição médica e estimada a aderência ao tratamento de 149 crianças. Os antimicrobianos mais comumente prescritos foram penicilina procaína (33%, penicilina benzatina (31%, ampicilina ou amoxacilina (12% e cotrimoxazol (8%. Embora tenha sido freqüente a associação de antimicrobianos com outros medicamentos, tratamento exclusivo com penicilina procaina foi prescrito para 31 crianças. A

  3. ASSÉDIO MORAL NO TRABALHO: UM ESTUDO EXPLORATÓRIO NO MUNICÍPIO DE FORTALEZA – CEARÁ./ MORAL HARASSMENT AT WORK: AN EXPLORATORY STUDY IN FORTALEZA CITY

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    Samira Daiha Benevides

    2012-08-01

    Full Text Available Pessoas assediadas estão ousando se expressar e denunciar as práticas abusivas de que são vítimasno ambiente de trabalho, assim, o objetivo deste artigo é apresentar a incidência dos casos de assédiomoral no município de Fortaleza – Ceará, utilizando o banco de dados de queixas registradas pelas vítimasna Delegacia Regional do Trabalho, no período de janeiro de 2008 a dezembro de 2009. No referencialteórico conceitua-se o assédio moral, suas manifestações e aspectos legais, bem como as estruturas psíquicasde defesa do trabalhador. Foi feita uma pesquisa exploratória com a utilização de dados secundários,obtidos no Núcleo de Combate a Discriminação por meio do relatório mensal das denúncias de AssédioMoral, elaborado pela Comissão Regional de Igualdade de Oportunidades de Gênero, Raça e Etnia, dePessoas com Deficiência e de Combate à Discriminação. Os resultados estão demonstrados por meio degráficos que apontam o tipo de discriminação por assédio moral, por perfil profissional, sexo e idade do reclamante.Pode-se concluir que há discriminação em várias áreas, gerando, muitas vezes, comportamentosindesejáveis e condutas abusivas, degradando o clima de trabalho e reduzindo a produtividade./ The objective of this article is to present the incidence of the cases of moral harassment inFortaleza city using the data base of complaints registered for the victims in the Delegacia Regional doTrabalho in the period of January of 2008 the December of 2009. The literature review is based on themoral harassment, its legal manifestations, as well as the psychic structures of defense of the worker. Aexploratory research with the use of secondary data was made in the Nucleus of Combat was becomefullfilled the Discrimination through the monthly report of the denunciations of moral harassment elaboratedby the Regional Commission of Equality of Chances of Gender, Race and ethnic group, of Peoplewith Deficiency and Combat

  4. PERCEPÇÃO AMBIENTAL DE VISITANTES DA RPPN SERRA DAS ALMAS, CRATEÚS/CE: A ESCOLHA DA ESPÉCIE GUARDA-CHUVA COMO POTENCIAL EDUCATIVO E DE GESTÃO

    Directory of Open Access Journals (Sweden)

    Iris Rianne Santana Alves

    2013-06-01

    Full Text Available Este trabalho se baseia em Dietz e Nagagata (1997 que propõe o direcionamento de programas em educação conservacionista aos visitantes e comunidades do entorno das áreas protegidas utilizando-se de espécies que proporcionam rápida identificação com as pessoas, também chamados de espécies guarda-chuva. Partindo da ideia do uso de espécies guarda-chuva como forma de contribuir para a conservação, foram utilizados questionários como ferramenta para o estudo da percepção de visitantes (professores e público variado quanto a possível espécie que poderia ser símbolo da RPPN. Os questionários (67 foram aplicados entre os meses de agosto à dezembro de 2010, período caracterizado como de extrema seca. Os resultados obtidos foram: I quanto ao perfil do visitante: a referente ao gênero (67% mulheres e faixa etária (entre 16 a 25 anos; b procedência (33% Crateús/CE, 43% Fortaleza/CE e 24% Buriti dos Montes/PI; c formação: professores com formação diversificada (pedagogia, ciências biológicas e química. Os resultados obtidos para a espécie guarda-chuva para a área foram: a espécies botânicas: plantas xerófilas e bromeliáceas, juazeiro (Ziziphus joazeiro. b espécies da fauna: macaco-prego (Cebus apella. Vale destacar que, dos entrevistados, 75% desconheciam a área e o animal mais preferido (macaco-prego era de fácil visualização em uma das trilhas da RPPN. Tais resultados possibilitam o uso didático da espécie escolhida junto aos visitantes e população do entorno visando se estimular a biofilia, buscando estabelecer aspectos perceptivos e de sensibilidade ambiental na referida comunidade. O resultado da percepção para a definição de uma espécie guarda-chuva foi confirmado com a literatura especializada quanto a maior preferência por espécies antropomórficas e que despertam sentimento de compaixão, neste caso o primata (Cebus apella. Logo podemos refletir à respeito dos benefícios da escolha de uma

  5. Coherence Kondo gap in CeNiSn and CeRhSb

    International Nuclear Information System (INIS)

    Takabatake, T.; Nakamoto, G.; Tanaka, H.; Bando, Y.; Fujii, H.; Nishigori, S.; Goshima, H.; Suzuki, T.; Fujita, T.; Oguro, I.; Hiraoka, T.; Malik, S.K.

    1994-01-01

    CeNiSn and CeRhSb are Kondo-lattice compounds showing the behavior of a small-gap semiconductor at temperatures below 7 K. We review and discuss the magnetic, transport and specific-heat measurements performed on single crystals of CeNiSn and polycrystals of CeRhSb. Prerequisites for gap formation are deduced from the effects of substitution and application of a magnetic field and pressure on the gapped state. ((orig.))

  6. Endostatin (EntreMed).

    Science.gov (United States)

    Grosios, K

    2000-07-01

    EntreMed has licensed the worldwide rights to the angiogenesis inhibitor Endostatin, a 20 kDa C-terminal fragment of collagen XVIII, from the Children's Hospital of Boston, a teaching affiliate of Harvard Medical School. It is being developed as a potential cancer treatment and may also be useful in certain types of blindness and arthritis [227427]. EntreMed filed an IND for Endostatin in June 1999 [334125] and as of September 1999, phase I trials were underway [341462]. As of April 2000, the company had initiated plans for testing low doses of Endostatin in cancer patients using continuous infusion and sc administration in a further phase I study to be conducted in Europe [361594]. A phase I trial of Endostatin which will evaluate the safety and efficacy of Endostatin at a range of doses in no more than 100 cancer patients has been initiated. The trial will take place at the University of Texas MD Anderson Medical Center and the University of Wisconsin Cancer Center in Madison. The National Cancer Center will be sponsoring the trial, which is expected to be completed in late 2000. As of March 2000, there had been no serious adverse events attributable to Endostatin administration. The first report from this trial is expected in autumn 2000 [341462], [366312]. The mechanism of action for Endostatin remains unclear, although reports from the 91st AACR Meeting in April 2000 showed that recombinant human endostatin bound to a number of tropomyosin cDNAs in a library screen [362039]. In preclinical studies, repeated administration of Endostatin consistently shrank primary tumors and did not produce any drug resistance. In mice, a variety of tumors which had progressed to 1 to 2% of total body weight, regressed to microscopic, dormant lesions following Endostatin treatment [231418], [231470], [270673]. Types of cancers which respond to Endostatin include lung, skin, vascular and fibrosarcomas. Toxicology studies in cynomolgus monkeys showed that bolus injections of

  7. Feeding dynamics and ecomorphology of Oligosarcus jenynsii (Gunther, 1864) and Oligosarcus robustus (Menezes, 1969) in the Lagoa Fortaleza, southern Brazil.

    Science.gov (United States)

    Nunes, D M; Hartz, S M

    2006-02-01

    Oligosarcus jenynsii and Oligosarcus robustus are fishes of Characidae family that occur in Rio Grande do Sul, Uruguay and northern Argentina. This work purported to study the feeding dynamics (repletion and hepatosomatic indexes and condition factor) over time, and to investigate the coexistence of these two species by evaluating the partition of resources using qualitative and quantitative analyses of diet, temporal and spatial segregation throughout the water column and some ecomorphological aspects of the species in the Lagoa Fortaleza. Specimens were sampled monthly, from May 2000 to April 2001 during 24 h/month, using stationary gill nets of different mesh sizes. The records of each individual included total and standard length; total, stomach and liver weight; sex and stomach repletion. The variation of the mean values of repletion index and relative frequencies of stomach repletion stages indicate that O. jenynsii and O. robustus do not present seasonal differences in feeding intensity. The hepatosomatic index shows an allocation of energy to the liver during every period except reproduction, when part of the energy is used for gonad maturation. The estimated condition factor for both species reveals an increase in the reproductive period, evidencing the influence of gonads upon the condition of the fish. The diet analysis revealed that O. robustus is piscivorous, whereas O. jenynsii is a generalist carnivore, tending to piscivory as well. The active period of O. robustus is more concentrated at sunrise and sunset, whereas O. jenynsii is continually active, a characteristic related to hunting for prey. The ecomorphological analysis revealed differences between the two species in the dimensions of the mouth. Evidence suggests that the species coexist, sharing food sources, differing in oral morphology but ingesting similar prey, possibly because food is not a limiting factor in the environment.

  8. Feeding dynamics and ecomorphology of Oligosarcus jenynsii (Gunther, 1864 and Oligosarcus robustus (Menezes, 1969 in the Lagoa Fortaleza, southern Brazil

    Directory of Open Access Journals (Sweden)

    D. M. Nunes

    Full Text Available Oligosarcus jenynsii and Oligosarcus robustus are fishes of Characidae family that occur in Rio Grande do Sul, Uruguay and northern Argentina. This work purported to study the feeding dynamics (repletion and hepatosomatic indexes and condition factor over time, and to investigate the coexistence of these two species by evaluating the partition of resources using qualitative and quantitative analyses of diet, temporal and spatial segregation throughout the water column and some ecomorphological aspects of the species in the Lagoa Fortaleza. Specimens were sampled monthly, from May 2000 to April 2001 during 24 h/month, using stationary gill nets of different mesh sizes. The records of each individual included total and standard length; total, stomach and liver weight; sex and stomach repletion. The variation of the mean values of repletion index and relative frequencies of stomach repletion stages indicate that O. jenynsii and O. robustus do not present seasonal differences in feeding intensity. The hepatosomatic index shows an allocation of energy to the liver during every period except reproduction, when part of the energy is used for gonad maturation. The estimated condition factor for both species reveals an increase in the reproductive period, evidencing the influence of gonads upon the condition of the fish. The diet analysis revealed that O. robustus is piscivorous, whereas O. jenynsii is a generalist carnivore, tending to piscivory as well. The active period of O. robustus is more concentrated at sunrise and sunset, whereas O. jenynsii is continually active, a characteristic related to hunting for prey. The ecomorphological analysis revealed differences between the two species in the dimensions of the mouth. Evidence suggests that the species coexist, sharing food sources, differing in oral morphology but ingesting similar prey, possibly because food is not a limiting factor in the environment.

  9. Profile of acid-base disturbances in an intensive care unit of Fortaleza, Ceará, Brazil.

    Directory of Open Access Journals (Sweden)

    Renan Barbosa Rodrigues

    2014-09-01

    Full Text Available Introduction: Acid – base disturbances are entities caused by the deregulation of the concentration of bicarbonate ions, the concentration of hydrogen ions and the partial pressure of carbon dioxide in the blood. These disturbances modify most cell fuctions when present, jeopardizing the proper functioning of organs.Methods: Cross-sectional analytical study based upon data collected from medical files of patients in ICU as seen from August 1 to December 31, 2013 at the Dr. José Frota Institute in Fortaleza, Ceará. The variables studied were: age, sex, cause of ICU admission, pH, HCO3-, pO2, pCO2 , glomerular filtration rate ( GFR , serum potassium concentrarion, serum magnesium concentration, serum creatinine and hemoglobin levels.Results: The most frequent disorders were primary respiratory alkalosis with               33 ( 38,4 % cases, 30 ( 34,9 % of metabolic alkalosis, 13 ( 15.1% of metabolic acidosis,    7 ( 8,2% did not present acid-base disorders and respiratory acidosis           3 ( 3,5%. Patients admitted with TBI had respiratory alkalosis as the most common primary disorder, followed by metabolic alkalosis, 16 ( 47,0 % and 13 ( 38,2 % , respectively. The main disturbances were mixed respiratory alkalosis with metabolic alkalosis and respiratory alkalosis with metabolic alkalosis found in 15.12% of patients in each of these combinations. Conclusion:The importance  of a detailed evaluation of acid-base disturbances is necessary since these disorders lead to higher mortality rates, so it is necessary to establish the main types of disorders that are associated with a particular cause of hospitalization .

  10. The role of Ce(III) in BZ oscillating reactions

    Science.gov (United States)

    Nogueira, Paulo A.; Varela, Hamilton; Faria, Roberto B.

    2012-03-01

    Herein we present results on the oscillatory dynamics in the bromate-oxalic acid-acetone-Ce(III)/Ce(IV) system in batch and also in a CSTR. We show that Ce(III) is the necessary reactant to allow the emergence of oscillations. In batch, oscillations occur with Ce(III) and also with Ce(IV), but no induction period is observed with Ce(III). In a CSTR, no oscillations were found using a freshly prepared Ce(IV), but only when the cerium-containing solution was aged, allowing partial conversion of Ce(IV) to Ce(III) by reaction with acetone.

  11. Adduct formation in Ce(IV) thenolytrifluoroacetonate

    International Nuclear Information System (INIS)

    Anufrieva, S.I.; Polyakova, G.V.; Snezhko, N.I.; Pechurova, N.I.; Martynenko, L.I.; Spitsyn, V.I.

    1982-01-01

    The literature contains no information on adduct formation in Ce(IV) β-diketonates with additional ligands. Since tetrakis-β-diketonates of Ce(IV) have four six-membered chelate rings, we can suppose that the introduction of an additional monodentate or bidentate ligand into the coordination sphere of Ce(IV) β-diketonates would lead to an increase in the coordination number (CN) of the Ce(IV) to nine or ten. The possibility of realization of such a high CN for Ce(IV) has not been proved; a study of adduct formation by Ce(IV) tetrakis-β-diketonates is thus of theoretical interest. Such an investigation might also be of practical interest, because the introduction of an additional ligand into the coordination sphere of a rare-earth β-diketonate usually increases the solubility of the β-diketonate in nonpolar solvents and increases the volatility of the compound; such a modification of the properties is important for various practical purposes. The aim of our work was to study the possibility of separating solid adducts of Ce(IV) tetrakis-thenoyltrifluoroacetonate with certain oxygen-containing and nitrogen-containing donor monodentate and bidentate ligands, and also to investigate their properties. As the β-diketone we used thenoyltrifluoroacetone (HTTFA), since in a parallel investigation it was found that Ce(TTFA) 4 has a high oxidation-reduction stability

  12. Liens entre le savoir et l'innovation dans les services de gestion des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ce projet de recherche-action portera sur l'innovation dans la prestation de services par les administrations locales au Sri Lanka. Il ciblera principalement les administrateurs locaux chargés de la prestation des services de gestion des déchets solides. Les chercheurs établiront dans quelle mesure les interactions entre les ...

  13. La vérite sur ce qui nous motive

    CERN Document Server

    Pink, Daniel H

    2011-01-01

    Voici enfin la traduction française du best-seller international DRIVE ! Qu'est-ce qui nous motive vraiment ? Dans quels cas sommes-nous les plus performants et les plus enthousiastes ? La plupart d'entre nous sommes persuadés que les récompenses (salaire, primes...) sont notre meilleure motivation. La logique de la carotte et du bâton finalement... Et si nous faisions fausse route ? En s'appuyant sur quatre décennies d'études scientifiques et psychologiques sur la motivation humaine, Pink démontre que les entreprises dirigent très mal leurs équipes avec d'énormes conséquences sur notre vie (absence d'ambition, lassitude, morosité). Le secret de la performance (et de la satisfaction) dans les entreprises, l'enseignement ou dans notre vie personnelle , c'est le besoin profondément humain de diriger sa propre vie, d'apprendre, de créer de nouvelles choses et de s'améliorer. Dans ce livre, Pink examine les 3 éléments de la motivation, l'autonomie, la maîtrise et le besoin de donner un sens ...

  14. Budget Management Health System Only - SUS im Municipal Context: Analysis of Audit-SUS in PPA of Fortaleza and its Role in Social Control Strengthening

    Directory of Open Access Journals (Sweden)

    Lizziane Souza Queiroz Franco de Oliveira

    2016-10-01

    Full Text Available The budget planning is the duty of every manager and fundamental for the implementation of key policies such as health. To implement them, it’s necessary to control the provision of these services; hence the importance of the audit. This article intends to, through documentary and bibliographic research, analyzing quantitative and qulitatively budgetary forecasting and execution aimed at audit’s actions - SUS, provideds for PPA/2014-2017 and LOA-2014, both the city of Fortaleza, in order to ascertain whether the municipal management performs its expenditure aimed at encouraging good planning and provide to society an efficient public management and responsive to social control.

  15. The influence of business elements in the choice of consumers for popular brands: an investigation in the residential market of mineral water 20 liters in Fortaleza

    OpenAIRE

    Daniel Ribeiro AragÃo

    2007-01-01

    Esta dissertaÃÃo de Mestrado teve por objetivo avaliar o impacto das variÃveis mercadolÃgicas no processo de decisÃo de compra de marcas populares de Ãgua mineral na Embalagem 20 litros no mercado residencial de Fortaleza. Este estudo constatou que o crescimento destas marcas foi favorecido pelo surgimento de uma nova classe de consumidores que, impulsionados por fatores sÃcio-econÃmicos como o aumento do poder aquisitivo e a estabilidade econÃmica passaram a consumir Ãgua mineral. HÃ ainda o...

  16. La enseñanza de la química desde el modelo integrado de aprendizaje profundo, MIAP. Fortalezas y debilidades

    Directory of Open Access Journals (Sweden)

    Johanna Camacho

    2009-09-01

    Full Text Available En este análisis crítico del Modelo Integrado de Aprendizaje Profundo, MIAP, se presentan algunos fundamentos teóricos del modelo, a partir de lo trabajado por el equipo de la Facultad de Educación de la Universidad Católica de Chile. Posteriormente, se reconocen algunas fortalezas y debilidades para la enseñanza de la química y se presentan algunos aspectos que pueden considerarse con el fin de mejorar las prácticas educativas de los profesores de química de enseñanza básica y media.

  17. Aspectos entomológicos e epidemiológicos das epidemias de dengue em Fortaleza, Ceará, 2001-2012

    OpenAIRE

    Oliveira, Rhaquel de Morais Alves Barbosa; Araújo, Fernanda Montenegro de Carvalho; Cavalcanti, Luciano Pamplona de Góes

    2018-01-01

    Resumo Objetivo: descrever os aspectos entomológicos e epidemiológicos das epidemias de dengue ocorridas em Fortaleza, Ceará, Brasil, de 2001 a 2012. Métodos: estudo descritivo com dados dos Sistemas de Informação de Agravos de Notificação (Sinan), de Informações Hospitalares (SIH), do Programa de Febre Amarela e Dengue (2001-2009), do Programa Nacional de Controle da Dengue (2010-2012) e Levantamento Rápido do Índice de Infestação de Aedes aegypti, referentes aos anos quando a incidência...

  18. Unstable magnetic moments in Ce compounds

    International Nuclear Information System (INIS)

    Aarts, J.

    1984-01-01

    The problems which are connected with the appearance or disappearance of local moments in metals are well reflected in the magnetic behaviour of Ce intermetallic compounds. This work describes experiments on two Ce compounds which are typical examples of unstable moment systems. The first of these is CeAl 2 which at low temperatures, shows coexistence of antiferromagnetic order and the Kondo effect. Measurements are presented of the magnetization and the susceptibility in different magnetic field and temperature regions. An analysis of these measurements, using a model for the crystal field effects, shows the agreement between the measurements and the calculations to be reasonably good for CeAl 2 , but this agreement becomes worse upon decreasing Ce concentration. A phenomenological description of the observations is given. The second compound reported on is CeCu 2 Si 2 , the first 'heavy-fermion' superconductor to be investigated. The superconducting state is possibly formed by the quasi-particles of a non-magnetic many body singlet state, and not simply by the (sd) conduction electrons. This being a novel phenomenon, a number of experiments were performed to test this picture and to obtain a detailed description of the behaviour of CeCu 2 Si 2 . Measurements of the Meissner volume, confirmed the superconductivity to be intrinsic. (Auth.)

  19. Chemically abrupt interface between Ce oxide and Fe films

    International Nuclear Information System (INIS)

    Lee, H.G.; Lee, D.; Kim, S.; Kim, S.G.; Hwang, Chanyong

    2005-01-01

    A chemically abrupt Fe/Ce oxide interface can be formed by initial oxidation of an Fe film followed by deposition of Ce metal. Once a Ce oxide layer is formed on top of Fe, it acts a passivation barrier for oxygen diffusion. Further deposition of Ce metal followed by its oxidation preserve the abrupt interface between Ce oxide and Fe films. The Fe and Ce oxidation states have been monitored at each stage using X-ray photoelectron spectroscopy

  20. Pyrazolates advance cerium chemistry: a CeIII/CeIV redox equilibrium with benzoquinone.

    Science.gov (United States)

    Werner, Daniel; Deacon, Glen B; Junk, Peter C; Anwander, Reiner

    2017-05-16

    Two stable cerium(iv) 3,5-dialkylpyrazolate complexes are presented, namely dimeric [Ce(Me 2 pz) 4 ] 2 (Me 2 pz = 3,5-dimethylpyrazolate) and monomeric Ce(tBu 2 pz) 4 (tBu 2 pz = 3,5-di-tert-butylpyrazolate) along with their trivalent counterparts [Ce(Me 2 pz) 3 ] and [Ce(tBu 2 pz) 3 ] 2 . All complexes were obtained from protonolysis reactions employing the silylamide precursors Ce[N(SiHMe 2 ) 2 ] 4 and Ce[N(SiMe 3 ) 2 ] 3 . Treatment of homoleptic Ce IV and Ce III Me 2 pz complexes with 1,4-hydroquinone (H 2 hq) or 1,4-benzoquinone (bq), respectively, ultimately gave the same trimetallic Ce III species via a cerium redox equilibrium. The Ce III complex Ce 3 (Me 2 pz) 5 (pchd) 2 (L) (pchd = 1,4-bis(3,5-dimethylpyrazol-1-yl)cyclohex-2,5-diene-1,4-diolato; L = Me 2 pzH or (thf) 2 ) results from a di-1,4-pyrazolyl attack on pre-coordinated bq. The reduction of bq by [Ce(Me 2 pz) 3 (thf)] 2 , and re-oxidation by the resulting Ce IV species was supported by UV-vis spectroscopic investigations. Comparisons with the redox-innocent complexes [Ln(Me 2 pz) 3 (thf)] 2 (Ln = La and Pr) revealed far less selective reactions with bq, giving hexametallic and octametallic rare-earth metal side products containing 2-Me 2 pz substituted hq ligands.

  1. Na ilha de Lia, no Barco de Rosa: o papel das interaÃÃes estabelecidas entre a professora de creche e as crianÃas na constituiÃÃo do eu infantil

    OpenAIRE

    Sinara Almeida da Costa

    2011-01-01

    Este estudo teve como objetivo analisar as interaÃÃes estabelecidas entre a professora e um grupo de crianÃas de trÃs anos em uma creche pÃblica municipal de Fortaleza, focalizando a interferÃncia dessas interaÃÃes no processo de individuaÃÃo das crianÃas. A fundamentaÃÃo teÃrica para o desenvolvimento da pesquisa foi essencialmente, a abordagem Sociointeracionista de Desenvolvimento e Aprendizagem Humana, especificamente os estudos de Wallon (1981, 1986, 1989) e de Vigotski (1989; 1996; 2001...

  2. Radiation streaming with SAM-CE

    International Nuclear Information System (INIS)

    De Gangi, N.; Cohen, M.O.; Waluschka, E.; Steinberg, H.A.

    1980-01-01

    The SAM-CE Monte Carlo code has been employed to calculate doses, due to neutron streaming, on the operating floor and other locations of the Millstone Unit II Nuclear Power Facility. Calculated results were compared against measured doses

  3. (EC+β+) decay of 130Ce

    International Nuclear Information System (INIS)

    Xu Shuwei; Zhang Tianmei; Xie Yuanxiang; Ma Ruichang; Ge Yuanxiu; Guo Yingxiang; Wang Chunfang; Li Zhankui; Guo Bing; Xing Jianping; Guo Tianrui; Zhu Shaofei; Xu Wang; Du Jinzhou

    1996-01-01

    The nuclide 130 Ce was produced by a ( 16 O, 4n) reaction on an enriched 118 Sn target. Reaction products were transported to a shielded location by using a helium-jet tape transport system. A 22.9 min activity in chemically separated cerium sample was identified as 130 Ce. The (EC+β + ) decay scheme of 130 Ce was proposed for the first time. This scheme includes 108 γ-lines, 107 γ-lines among them being new. More than 13 1 + low-lying states of 130 La are populated in the decay of 130 Ce. Two new isomers with half-life of 77±10 ns and 17±5 ns were observed by means of delayed γ-γ coincidence measurements. (orig.). With 5 figs., 3 tabs

  4. Saneamento bÃsico em Ãreas de vulnerabilidade socioeconÃmica: uma avaliaÃÃo do Programa de Drenagem Urbana de Fortaleza (DRENURB)

    OpenAIRE

    Camilla Paiva Viana

    2015-01-01

    O presente trabalho tem como objetivo estudar as polÃticas pÃblicas de saneamento bÃsico e, em especial, avaliar o Programa de Drenagem Urbana de Fortaleza (Drenurb), verificando quais foram os efeitos provocados por suas aÃÃes no perÃodo de 2010 a 2012. O Drenurb corresponde à primeira iniciativa sistematizada da Prefeitura Municipal de Fortaleza para a captaÃÃo das Ãguas pluviais em meio urbano, visando a minorar os transtornos causados pela incidÃncia de alagamentos. Para a realizaÃÃo dest...

  5. Helmintos parasitos das espécies Scomberomorus cavalla (Cuvier e Scomberomorus maculatus (Mitchill do litoral cearense: Contracaecum fortalezae sp. n. (Nematoda, Ascaridoidea

    Directory of Open Access Journals (Sweden)

    Vera Lucia M. Klein

    1973-01-01

    Full Text Available De nematódeos encontrados parasitando estômago, intestinos delgado e grosso de Scomberomorus cavalla (Cuv. e Scomberomorus maculatus (Mitch. o autor propões para o gênero Contracaecum Railliet et Henry, 1912 uma nova espécie, C. fortalezae sp. n., que mais se aproxima de C. clavatum (Rud., 1809 Baylis, 1920 dela se diferenciando por possuir espículos desiguais, um curto ovejetor, útero opistodelfo, ovos menores e por apresentar em todos exemplares estudados ceco intestinal curto e ceco esofagiano longo.In this paper the author proposes a new species of the genus Contracaecum Railliet et Henry, 1912. Of the species under Contracaecum, Contracaecum clavatum (Rudolphi, 1809 Baylis, 1920 is the nearest to Contracaecum fortalezae sp. n. differing from the latter by the following aspects: The males have unequal spicules. The females have a short ovijector and parallel uteri directed backward and the eggs are smaller. In both sexes the intestinal cecum is always short and the ventricular posterior appendix is always long, while Contracaecum clavatum presents these structures in an inverse way, considering the lenght of them. Besides, the thorn-like formations at the posterior end of the body are different.

  6. Aspectos entomológicos e epidemiológicos das epidemias de dengue em Fortaleza, Ceará, 2001-2012

    Directory of Open Access Journals (Sweden)

    Rhaquel de Morais Alves Barbosa Oliveira

    2018-02-01

    Full Text Available Resumo Objetivo: descrever os aspectos entomológicos e epidemiológicos das epidemias de dengue ocorridas em Fortaleza, Ceará, Brasil, de 2001 a 2012. Métodos: estudo descritivo com dados dos Sistemas de Informação de Agravos de Notificação (Sinan, de Informações Hospitalares (SIH, do Programa de Febre Amarela e Dengue (2001-2009, do Programa Nacional de Controle da Dengue (2010-2012 e Levantamento Rápido do Índice de Infestação de Aedes aegypti, referentes aos anos quando a incidência da doença superou o percentil 75%. Resultados: De 2001 a 2012 foram notificados 194.446 casos suspeitos de dengue. Os anos epidêmicos foram: 2001, 2006, 2008, 2011 e 2012. Houve aumento progressivo da incidência (587,0/100 mil hab. [2001] e 1.561,1/100 mil hab [2012], com cocirculação de até três sorotipos e elevada infestação vetorial, principalmente em depósitos para armazenar água. Conclusão: após longo período de circulação do vírus em Fortaleza, a dengue permanece como importante problema de saúde, com casos graves e alta letalidade.

  7. El análisis de las fortalezas, oportunidades, debilidades y amenazas en un grupo de empresas del estado de Jalisco

    Directory of Open Access Journals (Sweden)

    Silvio Hernández Cotón

    2016-02-01

    Full Text Available Los procesos de planeación estratégica se convierten en esenciales para dirigir los cambios de la organización y proporcionan las condiciones en la toma de decisiones gerenciales. Los resultados aquí expuestos son parte del problema general abordado en la línea de investigación sobre el pensamiento estratégico de las empresas de Jalisco, desarrollado por el Departamento de Mercadotecnia y Negocios Internacionales del CUCEA, y se refieren a la identificación de las tendencias que puedan hallarse en las debilidades, amenazas, fortalezas, y oportunidades que se presentan ante las empresas.  Se analizan los resultados de la investigación, obtenidos en 30 empresas de Jalisco durante 2003 y 2004, comparándolos con los resultados obtenidos en otras 54 empresas de Jalisco en la investigación realizada en 2002, en las que se identificaron las cinco principales fortalezas, oportunidades, debilidades y amenazas de cada empresa, así como las coincidencias.

  8. Entre monos y centauros

    Directory of Open Access Journals (Sweden)

    Serge Gruzinski

    2005-02-01

    Full Text Available    ¿Qué relación puede existir entre Ovidio, Tiziano y unos tlacuilo indios de la sierra otomí ? ¿Qué tienen en comun  el pintor mas famoso del siglo XVI , el veneciano Tiziano (+ 1576,  un poeta latino del primer siglo despues de Cristo, Publio Ovidio Nasón (-43/17 ,  y unos artistas indígenas anónimos del pueblo otomi de Ixmiquilpan?   Aunque la reunión de estos tres nombres parezca extraña y sorprendente, los hilos que los unen no son nada anecdóticos.  Permiten entender mejor la manera...

  9. Entre formigas e estrelas

    Directory of Open Access Journals (Sweden)

    Vinicius Prates

    2013-06-01

    Full Text Available Esta resenha apresenta o livro Reagregando o social: uma introdução à teoria do ator-rede, última obra do filósofo francês Bruno Latour publicada no Brasil. Nele, o autor se propõe a elaborar uma suma da crítica que faz aos conceitos usualmente aceitos de “social”, o que vem desenvolvendo ao longo dos últimos anos de produção intelectual. Neste processo ele criou a “Teoria-ator-rede”, que busca reestabelecer teoricamente as relações entre o que chama de mediadores “humanos” e “não-humanos”.

  10. Structural and magnetic properties of Ce/Fe and Ce/FeCoV multilayers

    Energy Technology Data Exchange (ETDEWEB)

    Tixier, S; Boeni, P [Paul Scherrer Inst. (PSI), Villigen (Switzerland); Mannix, D; Stirling, W G [Liverpool Univ. (United Kingdom); Lander, G H

    1997-09-01

    Ce/Fe and Ce/FeCoV multilayers have been grown by magnetron sputtering. The interfaces are well defined and the layers are crystalline down to an individual layer thickness of 20 A. Ce/FeCoV multilayers show sharper interfaces than Ce/Fe but some loss of crystallinity is observed. Hysteresis loops obtained by SQUID show different behaviour of the bulk magnetisation as a function of the layer thickness. Fe moments are found by Moessbauer spectroscopy to be perpendicular to the interfaces for multilayers with small periodicity. (author) 2 figs., 2 refs.

  11. Resonant photoemission study of CeRu4Sb12

    International Nuclear Information System (INIS)

    Ishii, Hiroyoshi; Miyahara, Tsuneaki; Takayama, Yasuhiro; Shiozawa, Hidetsugu; Obu, Kenji; Matsuda, Tatsuma D.; Aoki, Yuji; Sugawara, Hitoshi; Sato, Hideyuki

    2005-01-01

    We have measured the Ce 4d-4f and Ce 3d-4f resonant photoemission spectra of CeRu 4 Sb 12 . The Ce 4f spectra show the spectral features corresponding to a weakly hybridized system. The number of 4f electrons is estimated to be ∼1.0

  12. Entre grafos y bits

    Directory of Open Access Journals (Sweden)

    Carla Boserman

    2014-02-01

    Full Text Available Este texto se propone ahondar en las intersecciones de lo analógico y lo digital, en el encuentro de la baja y la alta tecnología. Tomando consciencia de la materialidad de ambas esferas para pensar desde ahí en objetos, prácticas de dibujo y documentación que puedan aportar otras formulaciones aplicables a métodos de investigación. Entre grafos y bits, diseccionaremos un objeto, el #relatograma, analizaremos su ecología y propondremos una reflexión acerca de su condición digital que genera paisajes por agregación #coreograma, explorando así su capacidad de ser reporte y aporte cognitivo. Between graphs and bits  Abstract This paper delves into the intersections of analogue and digital cultures, at the points at which low and high technology converge. While acknowledging the materiality of these two spheres, I aim to produce an enquiry into objects, drawings and documentation practices that can contribute to developing new research methods. Among graphs and bits, I will dissect one object: the #relatograma, in order to analyze its ecology and propose a critical reflection on its digital condition and its ability to produce aggregated landscapes, or what I define as #coreograma. I will thereby explore its ability to be share information and produce knowledge. Keywords: Material culture; research methods; digital objects; drawing; #relatograma.

  13. Perfil epidemiológico da cárie dentária, doença periodontal, uso e necessidade de prótese em idosos residentes em uma instituição na cidade de Fortaleza, Ceará Epidemiology of tooth decay, periodontal diseases, use and need of prostheses in the elderly living in a nursing home in the city of Fortaleza, State of Ceará (Brazil

    Directory of Open Access Journals (Sweden)

    Luciene Ribeiro Gaião

    2005-09-01

    Full Text Available No Brasil, a população de idosos está em crescimento contínuo, causando um aumento da demanda por instituições de longa permanência para idosos. Porém, estudos no nordeste brasileiro sobre a saúde bucal em idosos institucionalizados são praticamente inexistentes. Esse estudo objetivou analisar a condição dentária, a condição periodontal, o uso e necessidade de prótese em idosos institucionalizados em um município do nordeste brasileiro. Foi realizado um estudo transversal em 160 idosos (95,2% da população-alvo idosos de 65 anos e mais, residentes em um asilo na cidade de Fortaleza/CE - Brasil, consistindo de consulta aos prontuários e exame bucal. A idade média foi de 76,6 anos. O índice CPO-D dos idosos asilados foi elevado com valor de 29,73. O componente dente perdido foi o que mais contribuiu para o alto valor do CPO-D, com 28,42 dentes; 109 (68,1% idosos não possuíam nenhum dente hígido na boca. Dos 160 idosos, 93 (58,1% eram totalmente desdentados e 56 (35,0% apresentavam dentes com raízes expostas. Das raízes expostas, 16% estavam cariadas ou obturadas. Dos 573 dentes presentes, 256 (44,6% necessitavam de algum tipo de tratamento, sendo 194 (75,8% para extração dentária. Do total dos idosos investigados, 112 (70% não usavam nenhum tipo de prótese superior (total e removível e 130 (81,3% de prótese inferior. Quanto à necessidade de prótese (total e removível detectada, 135 (84,4% necessitavam de algum tipo de prótese superior e 142 (88,7% de prótese inferior. Dos 117 sextantes presentes nos 160 indivíduos, a maioria (83,8% apresentava cálculo dentário. Os dados mostram que a maioria dos idosos apresenta saúde bucal precária. Assim, são indispensáveis medidas intervencionais focalizadas nessas populações como educação em saúde e tratamento precoce.In Brazil, the elderly population has been growing continuously, leading to a higher demand for long-term institutions for the elderly. In spite

  14. Promoting effect of CeO 2 on cyclohexanol conversion over CeO 2

    Indian Academy of Sciences (India)

    Abstract. CeO2-ZnO materials were prepared by amorphous citrate process and characterized by TGA, XRD, UV-DRS and surface area measurements. TGA showed that the citrate precursors decompose in the range 350-550°C producing CeO2-containing catalytic materials. XRD and DRS results indicated the formation of ...

  15. Fabrication of Nano-CeO2 and Application of Nano-CeO2 in Fe Matrix Composites

    International Nuclear Information System (INIS)

    Tiebao, W.; Chunxiang, C.; Xiaodong, W.; Guobin, L.

    2010-01-01

    It is expatiated that nano-CeO2 is fabricated by the direct sedimentation method. The components and particles diameter of nano-CeO2 powders are analyzed by XRD and SEM . The thermodynamic analysis and acting mechanism of nano-CeO2 with Al in Fe matrix composites are researched, which shows that the reaction is generated between CeO2 and Al in the composite, that is, 3CeO2+4Al - 2Al2O3+3[Ce], which obtains Al2O3 and active [Ce] during the sintering process. The active [Ce] can improve the performance of CeO2/Fe matrix composites. The suitable amount of CeO2 is about 0.05% in CeO2/Fe matrix composites. SEM fracture analysis shows that the toughness sockets in nano-CeO2/Fe matrix composites are more than those in no-added nano-CeO2 composites, which can explain that adding nano-CeO2 into Fe matrix composite, the toughness of the composite is improved significantly. Applied nano-CeO2 to Fe matrix diamond saw blades shows that Fe matrix diamond saw blade is sharper and of longer cutting life than that with no-added nano-CeO2.

  16. Different magnetic behaviour of the Kondo compounds Al3Ce and Al11Ce3

    International Nuclear Information System (INIS)

    Benoit, A.; Flouquet, J.; Palleau, J.; Buevoz, J.L.

    1979-08-01

    Neutron diffraction experiments on the Al 3 Ce and Al 11 Ce 3 compounds have been performed on the multidetector of the I.L.L. high flux reactor. No magnetic structure has been detected on the Al 3 Ce compound down to 20 mK. This confirms the non magnetic ground state of Al 3 Ce. For Al 11 Ce 3 , two magnetic structures have been observed: a ferromagnetic one at 4.2 K and an antiferromagnetic one at 2 K. The antiferromagnetic structure, which corresponds to a propagation vector (0,0,1/3), implies a strong reduction of the magnetic moment of determined sites; this reflects the Kondo character of the compounds

  17. Ações de prevenção dos acidentes e violências em crianças e adolescentes, desenvolvidas pelo setor público de saúde de Fortaleza, Ceará, Brasil Measures developed by the public health system to prevent accidents and violence in children and adolescents in Fortaleza, Ceará, Brazil

    Directory of Open Access Journals (Sweden)

    Augediva Maria Jucá Pordeus

    2003-08-01

    Full Text Available Este artigo trata das ações de prevenção de acidentes e violências, desenvolvidas pelo setor público de saúde de Fortaleza, Estado do Ceará, Brasil. Originou-se da necessidade sentida pelas autoras diante das estatísticas de mortalidade por estas causas na infância e adolescência, que parecia não haver por parte do setor público de saúde ações de prevenção. Realizamos um levantamento junto aos gerentes das Coordenadorias de Saúde das seis Secretarias Executivas Regionais (SER, setores geográficos onde está organizada a rede de saúde de Fortaleza, por meio da aplicação de questionário. O levantamento mostrou que as ações desenvolvidas são pontuais, não existindo como política de saúde, visto que ocorrem na forma de campanhas, têm como foco principal a educação em saúde voltada para a prevenção do uso de álcool e outras drogas ilícitas, violência e acidentes domésticos e delinqüência juvenil. Apenas na SER-I existia parceria com outros setores nas atividades desenvolvidas. Concluímos que o setor público de saúde de Fortaleza, necessita incorporar em sua agenda a prevenção de acidentes e violências na infância e adolescência, utilizando a intersetorialidade e somando esforços para que o conhecimento até agora adquirido sobre a prevenção destes agravos se transforme em realidade.This article deals with measures developed by the public health system to prevent accidents and violence in children in Fortaleza, Ceará State, Brazil. The program resulted from the need perceived by the authors in light of statistics on mortality from external causes in childhood and adolescence and the fact that there was apparently no preventive action being taken by the public health system. We conducted a questionnaire-based survey of health administrators in the six Regional Executive Secretariats (SERs corresponding to the geographic districts in which the health system is divided in Fortaleza. According to the

  18. Physico-chemical properties of (U,Ce)O2

    International Nuclear Information System (INIS)

    Yamada, K.; Yamanaka, S.; Katsura, M.

    1998-01-01

    The high-temperature X-ray diffraction analysis of (U,Ce)O 2 with CeO 2 contents ranging from 0 to 20 mol.% CeO 2 was performed to obtain the variation of the linear thermal expansion coefficient with the CeO 2 content. Ultrasonic pulse-echo measurements were also carried out from room temperature to 673 K to estimate the change in the mechanical properties of (U,Ce)O 2 with the CeO 2 content. The variation in the linear thermal expansion coefficient at the low CeO 2 content region is more steep than that expected from the linear thermal expansion coefficient of UO 2 and CeO 2 . The Young's and shear moduli of all (U,Ce)O 2 were found to decrease with rising temperature. This was due to the increase of the bond length accompanied by the thermal expansion. Although the lattice parameter decreased with CeO 2 content, the moduli of (U,Ce)O 2 were found to decrease with increasing CeO 2 content at room temperature. These results show that in the range from 0 to 20 mol.% of CeO 2 , as CeO 2 content increases, the bottom of the potential energy in (U,Ce)O 2 is shallower and broader. (orig.)

  19. Situação da malária na tríplice fronteira entre Brasil, Colômbia e Peru

    Directory of Open Access Journals (Sweden)

    Paulo César Peiter

    2013-12-01

    Full Text Available O objetivo deste artigo é analisar a situação da vigilância da malária na tríplice fronteira entre Brasil, Colômbia e Peru. É um estudo qualitativo com aplicação de questionários em cidades da fronteira realizado em 2011. Os resultados foram analisados pela metodologia DOFA e apontaram diferenças significativas entre os sistemas de vigilância da malária na fronteira. Observou-se como debilidades a desarticulação entre atores responsáveis, a insuficiência de pessoal treinado, a alta rotatividade das equipes e a falta de médicos especialistas em malária nos hospitais locais. Verificou-se ainda o desconhecimento sobre a malária e suas formas de prevenção na população entrevistada. As fortalezas são a inserção de novos atores institucionais, a melhora da qualificação profissional, a distribuição de mosquiteiros impregnados e possibilidades de complementaridade entre os sistemas de vigilância a serem aproveitadas pela cooperação entre as equipes de saúde da fronteira, pois o controle da malária só pode ter sucesso tomando-se esta região em seu conjunto.

  20. La ordenación territorial en el País Vasco. Debilidades, amenazas,fortalezas y oportunidades de la escala intermedia

    Directory of Open Access Journals (Sweden)

    Pedro J. Lozano Valencia

    2003-01-01

    Full Text Available La ordenación del territorio encuentra su razón de ser, en el País Vasco, a través de las Directrices de Ordenación y dos tipos diferentes de documentos: los Planes Territoriales Parciales y los Planes Territoriales Sectoriales. Una vez delimitadas las comarcas y los sectores estratégicos, se aplican dichos documentos. Con todo, se logra la coordinación de las Directivas europeas a escala superior, y los Planes y Normas Subsidiarias de Ordenación Urbana a una escala inferior o local. En medio quedan todas esas herramientas de ordenación mencionadas anteriormente, que conforman lo que se ha venido a definir como la escala intermedia. Ésta aparece como un marco muy apropiado para abordar las debilidades, amenazas, fortalezas y oportunidades que, en un horizonte de 16 a 20 años, presenta el territorio vasco

  1. Occurrence of imposex in Thais haemastoma: possible evidence of environmental contamination derived from organotin compounds in Rio de Janeiro and Fortaleza, Brazil

    Directory of Open Access Journals (Sweden)

    Fernandez Marcos Antonio

    2002-01-01

    Full Text Available There are indications that the widespread use of organotin compounds (TBT and TPT as antifoulings, as stabilizers in plastic and as pesticides, has severely affected several species of marine organisms. The most striking effect of TBT and TPT as hormonal disruptors is the development of male organs in females of gastropods, currently denominated imposex. This syndrome can lead to the sterilization and death of affected organisms. The present work gives an overview of the present state of knowledge on imposex occurrence and reports results of a survey conducted in Guanabara Bay, Rio de Janeiro and in several sites along the coast of Fortaleza, Ceará State. Different stages of imposex development were verified in this survey, however, the most prominent levels appeared associated to known spot sources of TBT and TPT.

  2. Vulnerabilidade social: transformaÃÃes no espaÃo urbano de Fortaleza no inÃcio do sÃculo XXI

    OpenAIRE

    Rachel Vieira de Araujo

    2015-01-01

    Estudos sobre vulnerabilidade social estÃo presentes em vÃrias metrÃpoles da AmÃrica Latina. Tais espaÃos sÃo permeados por desigualdades onde diferentes grupos sociais vivem em condiÃÃes precÃrias com dÃficit de infraestrutura e serviÃos e outros vivem em Ãtimas condiÃÃes, com elevados Ãndices educacionais, renda, infraestrutura e uma gama de serviÃos. O trabalho traz a discussÃo da vulnerabilidade social em Fortaleza no inÃcio do sÃculo XXI. Para isso à necessÃrio compreender como a expa...

  3. An empirical comparison of respondent-driven sampling, time location sampling, and snowball sampling for behavioral surveillance in men who have sex with men, Fortaleza, Brazil.

    Science.gov (United States)

    Kendall, Carl; Kerr, Ligia R F S; Gondim, Rogerio C; Werneck, Guilherme L; Macena, Raimunda Hermelinda Maia; Pontes, Marta Kerr; Johnston, Lisa G; Sabin, Keith; McFarland, Willi

    2008-07-01

    Obtaining samples of populations at risk for HIV challenges surveillance, prevention planning, and evaluation. Methods used include snowball sampling, time location sampling (TLS), and respondent-driven sampling (RDS). Few studies have made side-by-side comparisons to assess their relative advantages. We compared snowball, TLS, and RDS surveys of men who have sex with men (MSM) in Forteleza, Brazil, with a focus on the socio-economic status (SES) and risk behaviors of the samples to each other, to known AIDS cases and to the general population. RDS produced a sample with wider inclusion of lower SES than snowball sampling or TLS-a finding of health significance given the majority of AIDS cases reported among MSM in the state were low SES. RDS also achieved the sample size faster and at lower cost. For reasons of inclusion and cost-efficiency, RDS is the sampling methodology of choice for HIV surveillance of MSM in Fortaleza.

  4. The Fermi surface of CeSb

    International Nuclear Information System (INIS)

    Crabtree, G.W.; Aoki, H.; Joss, W.; Hulliger, F.

    1987-01-01

    This paper uses accurate Fermi surface measurements as a test of hybridization models in CeSb. Detailed measurements of the Fermi surface geometry and effective masses are presented which show a number of unusual properties associated with the magnetic structure and anisotropy. Measurements are compared with predictions of a band structure in which the f-electron is assumed to be local, interacting with the conduction electrons only through anisotropic Coulomb and exchange interactions. This model reproduces all the unusual features observed in the measurements and suggests that hybridization is not essential to describing the electronic properties of CeSb

  5. CeO2-stabilized tetragonal ZrO2 polycrystals (Ce-TZP ceramics)

    International Nuclear Information System (INIS)

    Andrade Nono, M.C. de.

    1990-12-01

    This work presents the development and the characterization of CeO 2 -stabilized tetragonal ZrO 2 polycrystals (Ce-TZP ceramics), since it is considered candidate material for applications as structural high performance ceramics. Sintered ceramics were fabricated from mixtures of powders containing different CeO 2 content prepared by conventional and nonconventional techniques. These powders and their resultant sintered ceramics were specified by chemical and physical characterization, compactation state and mechanical properties. The chemical characteristics were determined by chemical analysis and the physical characteristics were evaluated by phase content, particle and agglomerate size and aspect, and powder porosity. (author)

  6. Production of 139Ce by the 139La(p,n)139Ce reaction

    International Nuclear Information System (INIS)

    Ishioka, Noriko S.; Sekine, Toshiaki; Izumo, Mishiroku; Hashimoto, Kazuyuki; Kobayashi, Katsutoshi; Matsuoka, Hiromitsu

    2002-01-01

    To produce a carrier-free 139 Ce to be used as an efficiency-calibration source for Ge detectors, a target-preparation method and a chemical separation method were studied. It was found that commercially available powders of lanthanum-oxide and lanthanum metal are applicable to a target material in the nuclear reaction 139 La(p,n) 139 Ce. In the separation of 139 Ce from an irradiated lanthanum target, a solvent-extraction method and an ion-exchange method gave final products in good chemical purity. (author)

  7. Microneedle Array Interface to CE on Chip

    NARCIS (Netherlands)

    Lüttge, Regina; Gardeniers, Johannes G.E.; Vrouwe, E.X.; van den Berg, Albert; Northrup, M.A.; Jensen, K.F; Harrison, D.J.

    2003-01-01

    This paper presents a microneedle array sampler interfaced to a capillary electrophoresis (CE) glass chip with integrated conductivity detection electrodes. A solution of alkali ions was electrokinetically loaded through the microneedles onto the chip and separation was demonstrated compared to a

  8. A CASA DA MÃE DE DEUS COMPORTA O (OUTRO MUNDO: dinâmicas geográfi cas no Santuário de Fátima em Fortaleza -CE

    Directory of Open Access Journals (Sweden)

    Tiago Vieira Cavalcante

    2011-01-01

    this geographic dynamics mediated by the sanctuary as vertical (relation house-another world, horizontal (relation house-world and relational (relation house-world-another world. This last effected with parties in every 13th day of each month, especially in May and October. The religious party happens as a social geographic potency, as join the vertical and horizontal dynamics together in a peculiar sacrum-profane instant. It's done by feed backing and potentiating the symbolic and institutional representativeness which the sanctuary holds. The Fatima's Sanctuary, so, is a place with a great special importance, through its representativeness in geographic dynamics which supports itself and the religiosity of thousands followers.

  9. Correlated electronic structure of CeN

    Energy Technology Data Exchange (ETDEWEB)

    Panda, S.K., E-mail: swarup.panda@physics.uu.se [Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala (Sweden); Di Marco, I. [Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala (Sweden); Delin, A. [Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala (Sweden); KTH Royal Institute of Technology, School of Information and Communication Technology, Department of Materials and Nano Physics, Electrum 229, SE-164 40 Kista (Sweden); KTH Royal Institute of Technology, Swedish e-Science Research Center (SeRC), SE-100 44 Stockholm (Sweden); Eriksson, O., E-mail: olle.eriksson@physics.uu.se [Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala (Sweden)

    2016-04-15

    Highlights: • The electronic structure of CeN is studied within the GGA+DMFT approach using SPTF and Hubbard I approximation. • 4f spectral functions from SPTF and Hubbard I are coupled to explain the various spectroscopic manifestations of CeN. • The calculated XPS and BIS spectra show good agreement with the corresponding experimental spectra. • The contribution of the various l-states and the importance of cross-sections for the photoemission process are analyzed. - Abstract: We have studied in detail the electronic structure of CeN including spin orbit coupling (SOC) and electron–electron interaction, within the dynamical mean-field theory combined with density-functional theory in generalized gradient approximation (GGA+DMFT). The effective impurity problem has been solved through the spin-polarized T-matrix fluctuation-exchange (SPTF) solver and the Hubbard I approximation (HIA). The calculated l-projected atomic partial densities of states and the converged potential were used to obtain the X-ray-photoemission-spectra (XPS) and Bremstrahlung Isochromat spectra (BIS). Following the spirit of Gunnarsson–Schonhammer model, we have coupled the SPTF and HIA 4f spectral functions to explain the various spectroscopic manifestations of CeN. Our computed spectra in such a coupled scheme explain the experimental data remarkably well, establishing the validity of our theoretical model in analyzing the electronic structure of CeN. The contribution of the various l-states in the total spectra and the importance of cross sections are also analyzed in detail.

  10. Some regularities of Ce(3) and Ce(4) stabilization in their compounds with β-diketones

    International Nuclear Information System (INIS)

    Pechurova, N.I.; Martynenko, L.I.; Snezhko, N.I.; Anufrieva, S.I.

    1985-01-01

    Adduct formation of cerium (3) and cerium (4) β-diketonates (acetylacetonate, benzoylacetonate, dibenzoylmethanate and thenoyltrifluoroacetonate) with oxygen- and nitrogen-donor ligands (Q-α, α'-dipyridyl, o-phenanthroline, trioctylphosphine oxide and triphenylphosphine oxide) is studied. The compounds obtained as a results of the reactions are studied by means of IR-spectroscopic, derivatographic and X-ray phase methods. It is concluded that composition and thermodynamic stability of adducts of Ce(3) tris-β-diketonates are determined by correlation of donor properties of the basis and additional ligand and stability of adducts to oxidation - as well as by their solubility. Introduction of the additional ligand to the system Ce(4)-β-diketones even in the presence of air oxygen stabilizes Ce(3) and destabilizes Ce(4)

  11. Magnetic and electronic properties in CeTSi3 and CeTGe3 (T: transition metal)

    International Nuclear Information System (INIS)

    Shimoda, T.; Okuda, Y.; Takeda, Y.; Ida, Y.; Miyauchi, Y.; Kawai, T.; Fujie, T.; Sugitani, I.; Thamizhavel, A.; Matsuda, T.D.; Haga, Y.; Takeuchi, T.; Nakashima, M.; Settai, R.; Onuki, Y.

    2007-01-01

    We investigated the magnetic properties of CeTSi 3 (T: Ru, Os, Co, Rh, Ir, Pd and Pt) and CeTGe 3 (T: Co, Rh and Ir) by measuring their electrical resistivity and magnetic susceptibility. CeRuSi 3 , CeOsSi 3 and CeCoSi 3 do not order magnetically, with a large Kondo temperature of about 200K. The other compounds order antiferromagnetically, and are very similar to each other in their magnetic and electronic properties, which is related to a large crystalline electric field (CEF) splitting energy of the 4f electron, about 500K in CeIrSi 3

  12. Características fenotípicas dos pacientes com anemia falciforme de acordo com os haplótipos do gene da βS-globina em Fortaleza, Ceará

    Directory of Open Access Journals (Sweden)

    Lilianne B. Silva

    2010-02-01

    Full Text Available Foram analisados 47 pacientes com diagnóstico clínico, laboratorial e molecular de anemia falciforme, residentes em Fortaleza, Ceará, com a finalidade de fornecer informações sobre a influência dos haplótipos do gene da βS- globina nas características fenotípicas desta doença. A determinação dos valores hematológicos foi realizada em contador automático de células sanguíneas, e os níveis de HbF foram determinados pela técnica da desnaturação alcalina. O DNA foi isolado de leucócitos, a partir de amostras de sangue total. A análise dos haplótipos da mutação βS foi realizada por PCR-RFLP (Polymerase Chain Reaction-Restriction Fragment Lenght Polymorphism, sendo analisados seis sítios polimórficos de restrição. Os pacientes foram divididos em cinco grupos, de acordo com o tipo de haplótipo: Bantu/Bantu, Benin/Benin, Bantu/Benin, Bantu/Atípico e Benin/Atípico. O nível de significância considerado nas análises foi p<0,05. Na comparação entre os haplótipos e as características hematológicas estudadas, apenas os valores de HbF e Ht apresentaram diferença estatisticamente significativa. Os níveis de HbF foram maiores no haplótipo Benin, seguido do haplótipo Bantu, o que está em conformidade com os dados da literatura. Foram demonstrados maior presença de crises vaso-oclusivas e episódios de pneumonia no haplótipo Benin/Atípico do que no haplótipo Bantu/Atípico; e maior presença de crises de infecção urinária no haplótipo Benin/Atípico do que no haplótipo Benin/Benin. Não houve diferença estatisticamente significativa entre os haplótipos Bantu/Bantu e Benin/Benin em relação às complicações clínicas; entretanto, foi observado que o haplótipo Bantu/Bantu tem uma maior frequência em todos os eventos clínicos estudados quando comparado ao Benin/Benin. Os resultados demonstram que o tipo de haplótipo do gene da βS-globina influencia as características fenotípicas dos pacientes com

  13. Tuning Ce distribution for high performanced Nd-Ce-Fe-B sintered magnets

    Energy Technology Data Exchange (ETDEWEB)

    Fan, Xiaodong [School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048 (China); Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science, Ningbo 315201 (China); Guo, Shuai; Chen, Kan; Chen, Renjie; Lee, Don [Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science, Ningbo 315201 (China); You, Caiyin, E-mail: caiyinyou@xaut.edu.cn [School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048 (China); Yan, Aru, E-mail: aruyan@nimte.ac.cn [Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science, Ningbo 315201 (China)

    2016-12-01

    A dual-alloy method was applied to tune the distribution of Ce for enhancing the performance of Nd-Ce-Fe-B sintered magnets with a nominal composition of (Nd{sub 0.75}Ce{sub 0.25}){sub 30.5}Fe{sub bal}Al{sub 0.1}Cu{sub 0.1}B. In comparison to the single alloy of (Nd{sub 0.75}Ce{sub 0.25}){sub 30.5}Fe{sub bal}Al{sub 0.1}Cu{sub 0.1}B, the coercivity was enhanced from 10.3 kOe to 12.1 kOe and the remanence was increased from 13.1 kG to 13.3 kG for the magnets with a dual-alloy method. In addition, the remanence temperature coefficient α and coercivity temperature coefficient β were also slightly improved for the magnet with the dual alloys. The results of microstructure characterizations show the uniform distribution of Ce for the magnet with a single alloy, and the coexistence of the Ce-rich and Ce-lean regions for the magnet with the dual alloys. In combinations with the nucleation of reversal domains and magnetic recoil curves, the property enhancement of magnets with a dual-alloy method was well explained. - Highlights: • Improved magnetic properties were obtained in dual-alloy magnet. • This is due to the tuning of Ce distribution and the change in microstructure. • The magnetic hardening effect can be observed in dual-alloy magnet.

  14. Inhibition of human carboxylesterases hCE1 and hiCE by cholinesterase inhibitors.

    Science.gov (United States)

    Tsurkan, Lyudmila G; Hatfield, M Jason; Edwards, Carol C; Hyatt, Janice L; Potter, Philip M

    2013-03-25

    Carboxylesterases (CEs) are ubiquitously expressed proteins that are responsible for the detoxification of xenobiotics. They tend to be expressed in tissues likely to be exposed to such agents (e.g., lung and gut epithelia, liver) and can hydrolyze numerous agents, including many clinically used drugs. Due to the considerable structural similarity between cholinesterases (ChE) and CEs, we have assessed the ability of a series of ChE inhibitors to modulate the activity of the human liver (hCE1) and the human intestinal CE (hiCE) isoforms. We observed inhibition of hCE1 and hiCE by carbamate-containing small molecules, including those used for the treatment of Alzheimer's disease. For example, rivastigmine resulted in greater than 95% inhibition of hiCE that was irreversible under the conditions used. Hence, the administration of esterified drugs, in combination with these carbamates, may inadvertently result in decreased hydrolysis of the former, thereby limiting their efficacy. Therefore drug:drug interactions should be carefully evaluated in individuals receiving ChE inhibitors. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

  15. Atendimento pré-hospitalar móvel em Fortaleza, Ceará: a visão dos profissionais envolvidos Mobile pre-hospital care in Fortaleza, Ceará: the vision of professionals involved

    Directory of Open Access Journals (Sweden)

    Juliana Guimarães e Silva

    2009-12-01

    Full Text Available Com o objetivo de descrever variáveis sociodemográficas, profissionais e operacionais das diferentes categorias envolvidas no Serviço de Atendimento Móvel de Urgência, bem como a percepção destas quanto à adequação do serviço oferecido às diretrizes da Política Nacional de Atenção às Urgências, foi realizado um estudo transversal, mediante um questionário autoaplicável, em 2007/2008. Os 89 pesquisados apontaram comprometimento da estrutura física (60,7%; escassez de materiais (82,0%; incipiência de recursos humanos (37,1%; mau estado de conservação e número insuficiente de ambulâncias (67,4%. 98,9% admitiram que há integração com outros serviços, com diferença estatística entre as categorias profissionais (p = 0,037. A terceirização predominou entre 71,4% dos médicos e 84,2% dos enfermeiros (p A cross-sectional study based on a self-administered questionnaire was performed in 2007/2008, with the objective of describing sociodemographic, professional, and operating variables of the various professional categories involved in the Mobile Emergency Care Service, and the perception of the compliance of the service offered with the guidelines of the National Emergency Care Policy. All 89 participants indicated deficient physical structure (60.7%; shortage of materials (82.0%; unskilled human resources (37.1%; poor conservation conditions and insufficient number of ambulances (67.4%; 98.9% admitted the existence of integration with other services, with some statistical differences among professional categories (p = 0.037. Outsourcing prevailed among 71.4% of physicians and 84.2% of nurses (p < 0.001. Specific capacity building was confirmed by 79.8%, and update by 88.8% of professionals. Total average response time was 29 minutes (SD ± 14.8, and 65.2% acknowledged knowing the policy. This study showed that pre-hospital care services have structural and planning problems, among which poor working conditions and fragile

  16. Relação entre a capacidade funcional e mobilidade com a prática de atividade física em idosos participantes de uma associação = Relationship between mobility and functional capacity with practice of physical activity in elderly participants of an association

    Directory of Open Access Journals (Sweden)

    Moraes, Maria Paula Iorio de

    2016-01-01

    Full Text Available Objetivo: Avaliar a relação entre capacidade funcional e mobilidade com a prática de atividade física em idosos participantes de uma associação. Materiais e Métodos: Estudo do tipo transversal, realizado com um grupo de idosos frequentadores de uma Associação localizada no município de Fortaleza/CE. Os dados foram coletados através de um questionário contendo informações pessoais como sexo, idade, nível de atividade física e a ocorrência de quedas no ano anterior. Em seguida, foram avaliadas a capacidade funcional pelo questionário Brazilian Version of Multidimensional Functional Assessment (BOMFAQ e a mobilidade por meio do teste Timed Up & Go (TUG. Para análise dos dados, foram utilizados o teste qui-quadrado e a correlação de Pearson e adotado p<0,05 como valor significativo. Resultados: Participaram do estudo 71 idosos com média de idade de 72,42±7,06 anos, com predomínio do sexo feminino (76,1% sendo que 43,7% afirmaram ter caído nos últimos 12 meses. Não foram encontradas diferenças significativas (p=0,494, quando comparada a prática de atividade física com os escores do BOMFAQ. Já em relação à prática de atividade física e os valores do TUG, foram observadas diferenças significativas (p=0,022, porém, com fraca correlação (r=0,310; p=0,008. Conclusão: Foi evidenciado que os idosos frequentadores da associação apresentaram déficit para realizar atividades comprometendo a capacidade funcional, no entanto, não foram observadas alterações na mobilidade e risco de quedas. Ressalta-se que tais modificações foram mais prevalentes nos idosos que não praticam atividade física

  17. Facile hydrothermal synthesis of CeO 2 nanopebbles

    Indian Academy of Sciences (India)

    Cerium oxide (CeO2) nanopebbles have been synthesized using a facile hydrothermal method. X-ray diffraction pattern (XRD) and transmission electron microscopy analyses confirm the presence of CeO2 nanopebbles. XRD shows the formation of cubic fluorite CeO2 and the average particle size estimated from the ...

  18. Relaciones entre el uso de la voz y el burnout en los docentes de educación infantil y primaria de Málaga

    OpenAIRE

    Bermúdez De Alvear, Rosa; Martínez Arquero, Ginés; Ríus Díaz, Francisca; Esteve Zarazaga, José Manuel

    2004-01-01

    Se analiza la relación existente entre el perfil de uso vocal y el síndrome burnout en una muestra de 244 maestros de Educación Infantil y Primaria de los colegios públicos de Málaga. Estos profesores obtienen bajas puntuaciones en las escalas de Cansancio Emocional (CE), Despersonalización (DP) y Realización Personal (RP). Se han encontrado relaciones significativas entre el perfil vocal y las escalas del burnout: CE se relaciona con el uso vocal en clase y la tensión muscular cervical; ...

  19. Cerium intermetallics CeTX. Review III

    Energy Technology Data Exchange (ETDEWEB)

    Poettgen, Rainer; Janka, Oliver [Muenster Univ. (Germany). Inst. fuer Anorganische und Analytische Chemie; Chevalier, Bernard [Bordeaux Univ., Pessac (France). Inst. de Chimie de la Matiere Condensee de Bordeaux

    2016-05-01

    The structure-property relationships of CeTX intermetallics with structures other than the ZrNiAl and TiNiSi type are systematically reviewed. These CeTX phases form with electron-poor and electron-rich transition metals (T) and X = Mg, Zn, Cd, Hg, Al, Ga, In, Tl, Si, Ge, Sn, Pb, P, As, Sb, and Bi. The review focusses on the crystal chemistry, the chemical bonding peculiarities, and the magnetic and transport properties. Furthermore {sup 119}Sn Moessbauer spectroscopic data, high-pressure studies, hydrogenation reactions and the formation of solid solutions are reviewed. This paper is the third of a series of four reviews on equiatomic intermetallic cerium compound [Part I: R. Poettgen, B. Chevalier, Z. Naturforsch. 2015, 70b, 289; Part II: R. Poettgen, B. Chevalier, Z. Naturforsch. 2015, 70b, 695].

  20. 78 FR 75557 - CE FLNG, LLC, CE Pipeline, LLC; Notice of Intent To Prepare an Environmental Impact Statement for...

    Science.gov (United States)

    2013-12-12

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. PF13-11-000] CE FLNG, LLC, CE Pipeline, LLC; Notice of Intent To Prepare an Environmental Impact Statement for the Planned CE FLNG Project, Request for Comments on Environmental Issues, and Notice of Public Scoping Meeting The staff of the Federal Energy Regulatory Commission ...

  1. Análise do conhecimento sobre DSTs e planejamento familiar entre deficientes auditivos e ouvintes de uma escola pública de Fortaleza Analysis of knowledge of STDs and family planning among people with and without hearing-impairment at a public school in Fortaleza

    Directory of Open Access Journals (Sweden)

    Tadeu Rodriguez de Carvalho Pinheiro Filho

    2010-04-01

    Full Text Available Segundo a OMS, havia cerca de 278 milhões de deficientes auditivos no mundo, em 2005. A maioria deles não tem acesso a serviços de educação em saúde sexual, o que os tornam bastante vulneráveis a ocorrência de gravidez precoce e infecção por Doenças Sexualmente Transmissíveis (DSTs/AIDS. Objetivou-se analisar comparativamente o conhecimento de estudantes, com ou sem alguma deficiência auditiva, de uma escola pública, sobre planejamento familiar e DSTs. Trata-se de um estudo transversal e comparativo em que 149 estudantes de uma escola pública foram divididos em 2 grupos: 98 ouvintes e 51 não-ouvintes. Foi então aplicado um questionário com indagações sobre planejamento familiar e DSTs. Os dados foram analisados pelo programa EPI INFO, considerando p válido quando According to the WHO, there were close to 278 million deaf people in the world in 2005. Most of them have no access to education services related to sex education, which makes them quite vulnerable to early pregnancy and infection by sexually transmitted diseases (STDs/AIDS. This study aimed to analyze the knowledge public school students with and without hearing impairment, had about family planning and STDs. This is a cross-sectional comparative study in which 149 students from a public school were divided into 2 groups: 98 hearing students and 51 deaf students. They answered a questionnaire with questions about family planning and STDs. The data were analyzed using EPI INFO and considered significant when p <0.05. RESULTS: 50.00% of the deaf students answered that there is a cure for AIDS against 25.30% of the hearing students; 92.90% of hearing students while 43.10% of the deaf students reported that condom use protects against AIDS/STDs. The majority of the hearing students (97.90% said they would go to a health clinic if an injury typical of sexually transmitted diseases appeared, against 47.10% of the deaf students. The data presented suggest that there is a lack of information about this subject content among young people with hearing impairments.

  2. Knowledge about genetically modified food: a study with supermarket clients situated in noble area of Fortaleza city - doi:10.5020/18061230.2004.p72

    Directory of Open Access Journals (Sweden)

    Paola Gondim Calvasina

    2012-01-01

    Full Text Available The transgenic foods had appeared as result of the scientific and technological advances of genetic engineering applied to agriculture, configuring themselves in a current quarrel and sufficient controversy, about how much the benefits and curses brought to the consumers and the proper environment. In this intention, this study has as objective to verify the level of knowledge of customers of a supermarket of the noble area of the city of Fortaleza, on the thematic of the transgenic. Questionnaires structuralized with questions on transgenic foods with consumers of a situated supermarket in noble area of the city of Fortaleza in the period of March of 2003 had been applied. Sixty consumers had participated of the study who at the moment were making purchases in the supermarket. It was presented the end of the interview, to each consumer, a list of products, removed of the guide of the transgenic food consumer and not transgenic, available on the Greenpeace. In each list, people would have to recognize or not products of its habitual consumption. It was verified that 50% of the interviewed people had higher level of school knowledge, with 63,3% answering that they knew what transgenic foods are; 53,3% always look at the label during the purchase, being that the majority (76,7% never saw, in the label, mention if the product is or not transgenic. It was evidenced, when interrogating on the possible risks to the health, that 33.3% find that they cause illnesses, however 51.7% would not be imported in consuming them. The opinion of the people regarding the release of these products is major (73,3% in agreeing that the Federal Government must wait more research. From the list of products presented to the interviewed, 60% had told that they consume enter 5 to 9 products. It was evidenced that still a lack knowledge exists on the presence of transgenic in industrialized products, as well as how much to the risks consuming it. It has necessity of

  3. Epidemia de dengue em Fortaleza, Ceará: inquérito soro-epidemiológico aleatório

    Directory of Open Access Journals (Sweden)

    Pedro F. C. Vasconcelos

    1998-10-01

    Full Text Available OBJETIVO: Seguindo-se à epidemia de dengue (DEN, em 1994, em Fortaleza, Ceará, causada pelo sorotipo 2 (DEN-2, realizou-se inquérito soro-epidemiológico aleatório para avaliar e dimensionar o impacto da mesma e a prevalência do dengue por distrito sanitário. MÉTODO: Foi aplicado questionário contendo informações gerais, condições socio-econômicas, informações sobre o quadro clínico e tempo de doença. A amostra foi calculada para estimar uma prevalência de 20%, com erro relativo de 10%, e intervalo de confiança de 95% (erro a de 5%. O sorteio e as análises foram realizadas por meio de computador usando programas apropriados. RESULTADOS E CONCLUSÕES: Foram colhidas 1.341 amostras de soro de 9 distritos sanitários, testadas por inibição da hemaglutinação, sendo classificadas como negativas e positivas (respostas primária - RP e secundária - RS. Foram reativas 588 (44% amostras, sendo 93 (7% RP e 495 (37% RS. A prevalência global em Fortaleza variou de 21% a 71%. Houve 41% (243/588 de infecções assintomáticas (IA e 59% (346/588 sintomáticas (IS. Não houve diferença da prevalência quanto ao sexo, faixa etária e escolaridade, ao contrário da condição socioeconômica que apresentou diferenças estatisticamente significantes (p < 0,001. Ocorreram mais IA (p<0,001 e IS (p<0,0001 em casos de RS que RP, com significância estatística em ambos os sexos. Os sintomas mais prevalentes no casos confirmados foram febre, cefaléia, mialgias, exantema, mal estar geral, tontura e artralgias, sendo que prurido, dor ocular, exantema e gengivorragia foram estatisticamente significantes (p<0,005. Tontura e artralgias foram mais associados com RS que com RP, havendo diferenças estatísticas (p <0,05.

  4. Freqüência e atividade enzimática de Candida albicans isoladas da mucosa bucal de crianças de uma creche da prefeitura de Fortaleza Frequency and enzymatic activity of Candida albicans isolated from the buccal mucosa of children of a day-care center of the city hall of Fortaleza, Ceará, Brazil

    Directory of Open Access Journals (Sweden)

    Everardo Albuquerque Menezes

    2005-02-01

    Full Text Available As candidíases bucais (também chamadas sapinhos que ocorrem em crianças são causadas por uma deficiência imunológica, bem como por outros fatores tais como má higiene bucal e esterilização inadequada dos utensílios utilizados pelas mesmas, que potencializam a ocorrência dessa infecção fúngica. Considerando esse fato, foram avaliadas a freqüência e a atividade enzimática de Candida sp. isoladas em crianças de uma creche pública (Aprisco na cidade de Fortaleza, Ceará. Foram coletadas amostras da mucosa bucal de 364 alunos de 1 a 5 anos de idade. Elas foram semeadas em ágar Sabouraud dextrose com cloranfenicol, incubadas por 72 horas a 37ºC e identificadas por testes micológicos. Verificou-se que 67 (18% apresentaram leveduras do gênero Candida. A Candida albicans foi a mais freqüente, com 30 isolados (45%, seguida pelas C. tropicalis (31%, C. guilliermondii (17%, C. glabrata (4,5% e C. stellatoidea (1,5%. Com relação às atividades enzimáticas das cepas de Candida albicans, 20% produziram a enzima proteinase e 33%, a fosfolipase. As Candida albicans isoladas da mucosa bucal de crianças dessa creche da prefeitura apresentaram uma fraca atividade enzimática. Assim, conclui-se que essas cepas parecem ter uma baixa virulência.Immunedefficiency is one of the main causes of buccal candidiasis, also called thrush, in children. Other factors like inadequate mouth hygiene and inappropriate sterilization utensils potentialize this fungal infection. Considering these facts, Candida sp. frequency and enzymatic activity were evaluated in 364 stocks from mouth mucous of one to five year-old children from a public day care center in Fortaleza, Ceará (Brazil. The samples were cultured in dextrose Sabouraud with chloranfenicol agar and incubated for 72 hours at 37°C. They were identified by mycological tests. It was verified that 67 samples (18% presented Candida sp. and the most frequent genus was Candida albicans (30

  5. Itinerant f-electron behavior in Ce and U compounds

    International Nuclear Information System (INIS)

    Crabtree, G.W.

    1985-04-01

    The experimentally observed Fermi surface properties in URh 3 , UIr 3 , UGe 3 , CeSn 3 , CeB 6 , U 3 As 4 , U 3 P 4 , and CeSb are reviewed. For the compounds with no magnetic order, band structure models of the Fermi surface geometry are confirmed and f-ligand hybridization is found to be dominant. For CeB 6 , U 3 As 4 , and U 3 P 4 the experiments show that both local moments and f hybridization are important. In CeSb new data can be explained by a purely local model with no f-hybridization

  6. Thermodynamic stability studies of Ce-Sb compounds with Fe

    Science.gov (United States)

    Xie, Yi; Zhang, Jinsuo; Benson, Michael T.; Mariani, Robert D.

    2018-02-01

    Lanthanide fission products can migrate to the fuel periphery and react with cladding, causing fuel-cladding chemical interaction (FCCI). Adding a fuel additive dopant, such as Sb, can bind lanthanide, such as Ce, into metallic compounds and thus prevent migration. The present study focuses on the thermodynamic stability of Ce-Sb compounds when in contact with the major cladding constituent Fe by conducting diffusion couple tests. Ce-Sb compounds have shown high thermodynamic stability as they did not react with Fe. When Fe-Sb compounds contacted with Ce, Sb was separated out of Fe-Sb compounds and formed the more stable Ce-Sb compounds.

  7. Apropiação do espaço público pelo comércio ambulante: Fortaleza-Ceará-Brasil em evidência (1975 a 1995)

    OpenAIRE

    Correia Dantas, Eustógio Wanderley

    2007-01-01

    Based on the comprehension of the relationship between city-urban and State-space, the present paper analysis the process of occupation of Fortaleza City (Capital of Ceará, Northeastern Brazil) down-town by  informal commerce between the years of 1975/1995. Working with this temporal-spatial scale, we discuss the action of the State in the organization and control of private appropriation of public space by informal workers, following political interventions of moderni...

  8. Ce(III)/Ce(IV) in methanesulfonic acid as the positive half cell of a redox flow battery

    International Nuclear Information System (INIS)

    Leung, P.K.; Ponce de Leon, C.; Low, C.T.J.; Walsh, F.C.

    2011-01-01

    The characteristics of the Ce(III)/Ce(IV) redox couple in methanesulfonic acid were studied at a platinum disk electrode (0.125 cm 2 ) over a wide range of electrolyte compositions and temperatures: cerium (III) methanesulfonate (0.1-1.2 mol dm -3 ), methanesulfonic acid (0.1-5.0 mol dm -3 ) and electrolyte temperatures (295-333 K). The cyclic voltammetry experiments indicated that the diffusion coefficient of Ce(III) ions was 0.5 x 10 -6 cm 2 s -1 and that the electrochemical kinetics for the oxidation of Ce(III) and the reduction of Ce(IV) was slow. The reversibility of the redox reaction depended on the electrolyte composition and improved at higher electrolyte temperatures. At higher methanesulfonic acid concentrations, the degree of oxygen evolution decreased by up to 50% when the acid concentration increased from 2 to 5 mol dm -3 . The oxidation of Ce(III) and reduction of Ce(IV) were also investigated during a constant current batch electrolysis in a parallel plate zinc-cerium flow cell with a 3-dimensional platinised titanium mesh electrode. The current efficiencies over 4.5 h of the process Ce(III) to Ce(IV) and 3.3 h electrolysis of the reverse reaction Ce(IV) to Ce(III) were 94.0 and 97.6%, respectively. With a 2-dimensional, planar platinised titanium electrode (9 cm 2 area), the redox reaction of the Ce(III)/Ce(IV) system was under mass-transport control, while the reaction on the 3-dimensional mesh electrode was initially under charge-transfer control but became mass-transport controlled after 2.5-3 h of electrolysis. The effect of the side reactions (hydrogen and oxygen evolution) on the current efficiencies and the conversion of Ce(III) and Ce(IV) are discussed.

  9. Motor neuron diseases in the University Hospital of Fortaleza (Northeastern Brazil: a clinico-demographic analysis of 87 cases Doenças do neurônio motor no Hospital Universitário de Fortaleza (Nordeste do Brasil: análise clínico-demográfica de 87 casos

    Directory of Open Access Journals (Sweden)

    CARLOS M. DE CASTRO-COSTA

    2000-12-01

    Full Text Available In this retrospective (1980-1998 study, we have analyzed clinico-demographically, from the records of the University Hospital of Fortaleza (Brazil, a group of 87 patients showing signs and symptoms of motor neuron diseases (MNDs. Their diagnosis was determined clinically and laboratorially. The WFN criteria were used for amyotrophic lateral sclerosis (ALS diagnosis. The clinico-demographic analysis of the 87 cases of MNDs showed that 4 were diagnosed as spinal muscular atrophy (SMA, 5 cases as ALS subsets: 2 as progressive bulbar paralysis (PBP, 2 as progressive muscular atrophy (PMA and 1 as monomelic amyotrophy (MA, and 78 cases of ALS. The latter comprised 51 males and 27 females, with a mean age of 42.02 years. They were sub-divided into 4 groups according to age: from 15 to 29 years (n= 17, 30 to 39 years (n= 18, 40 to 69 years (n= 39 and 70 to 78 years (n= 4. From the 78 ALS patients, 76 were of the classic sporadic form whilst only 2 were of the familial form. The analysis of the 87 patients with MNDs from the University Hospital of Fortaleza showed a predominance of ALS patients, with a high number of cases of juvenile and early onset adult sporadic ALS.Neste estudo retrospectivo (1980-1998, analisamos clínico-demograficamente, a partir dos prontuários do Hospital Universitário de Fortaleza (Brasil, um grupo de 87 pacientes que apresentavam sinais e sintomas de doenças do neurônio motor (DNMs. Eles foram diagnosticados clinicamente, e através de exames complementares. Para o diagnóstico da esclerose lateral amiotrófica (ELA, usamos os critérios da Federação Mundial de Neurologia. A análise clínico-demográfica dos 87 casos de DNMs evidenciou a existência de 4 casos de atrofia muscular espinhal (AME, 5 casos de variantes da ELA: 2 de paralisia bulbar progressiva (PBP, 2 de atrofia muscular progressiva (AMP e 1 de amiotrofia monomélica (AM, e 78 casos de ELA. Esses últimos eram constituídos de 51 homens e 27 mulheres, com

  10. La democratización en Centroamérica desde sus guerras civiles: fortalezas y debilidades

    Directory of Open Access Journals (Sweden)

    Fabrice Lehoucq

    2013-07-01

    Full Text Available Este trabajo documenta y explica las tendencias de la democracia en Centroamérica. Presenta y actualiza los resultados de la taxonomía de cambio de régimen político y sus hechos fundamentales en la región, y examina cómo los cambios en la gobernabilidad electoral y la naturaleza de las relaciones ejecutivo-legislativas proporcionan una valoración más matizada del alcance del cambio institucional, en parte por el aprovechamiento de otros esfuerzos por evaluar el legado de la guerra civil en Centroamérica. El aporte más importante es que da cuenta de las tendencias de democratización, comparando los resultados de la posguerra en Centroamérica con los de otras 130 sociedades más que han experimentado guerras civiles entre 1940 y 2000, y sugiere que las victorias y los acuerdos negociados han conllevado, en la mayoría de los países, mejoras en los diferentes tipos de regímenes. Sin embargo, la guerra civil siempre ha dejado enormes daños en las economías, por lo que el autor explora el impacto que tuvo la guerra en la crisis económica, para entender cómo la falta de crecimiento contribuye a la decadencia política en Guatemala, Honduras y Nicaragua, pero no en El Salvador ni en Costa Rica -que también experimentó en 1948 una guerra civil -.

  11. Western blot seroindeterminate individuals for Human T-lymphotropic Virus 1/2 (HTLV-1/2 in Fortaleza (Brazil: a serological and molecular diagnostic and epidemiological approach

    Directory of Open Access Journals (Sweden)

    Santos Terezinha de Jesus Teixeira

    2003-01-01

    Full Text Available How to handle Western blot (WB seroindeterminate individuals for Human T-lymphotropic Virus 1/2 (HTLV-1/2 constitutes a challenge for blood banks and fam ilies. We made a cross-sectional study of 191 enzyme linked immunoassay (EIA reactive individuals from the hematological center (HEMOCE of Fortaleza (Brazil, examining their serological (WB and molecular (PCR diagnosis, and demographic profiles, as well as a possible association of their condition with other infectious pathologies and risk factors. Ethical institutional approval and personal consent were obtained. Out of 191 EIA reactive individuals, 118 were WB seroindeterminate and 73 were seropositive for HTLV-1/2. In the PCR analysis of 41 WB seroindeterminate individuals, 9 (22% were positive and 32 (78% were negative for HTLV-1/2. The demographic analysis indicated a trend towards a predominance of males among the seroindeterminate individuals and females in the seropositive ones. The seroindeterminate individuals were younger than the seropositive ones. We did not find any association of these conditions with syphilis, Chagas disease or HIV or hepatitis, and with risk factors such as breast-feeding, blood transfusion, STD (syphilis and IDU.

  12. Western blot seroindeterminate individuals for Human T-lymphotropic Virus 1/2 (HTLV-1/2 in Fortaleza (Brazil: a serological and molecular diagnostic and epidemiological approach

    Directory of Open Access Journals (Sweden)

    Terezinha de Jesus Teixeira Santos

    Full Text Available How to handle Western blot (WB seroindeterminate individuals for Human T-lymphotropic Virus 1/2 (HTLV-1/2 constitutes a challenge for blood banks and fam ilies. We made a cross-sectional study of 191 enzyme linked immunoassay (EIA reactive individuals from the hematological center (HEMOCE of Fortaleza (Brazil, examining their serological (WB and molecular (PCR diagnosis, and demographic profiles, as well as a possible association of their condition with other infectious pathologies and risk factors. Ethical institutional approval and personal consent were obtained. Out of 191 EIA reactive individuals, 118 were WB seroindeterminate and 73 were seropositive for HTLV-1/2. In the PCR analysis of 41 WB seroindeterminate individuals, 9 (22% were positive and 32 (78% were negative for HTLV-1/2. The demographic analysis indicated a trend towards a predominance of males among the seroindeterminate individuals and females in the seropositive ones. The seroindeterminate individuals were younger than the seropositive ones. We did not find any association of these conditions with syphilis, Chagas disease or HIV or hepatitis, and with risk factors such as breast-feeding, blood transfusion, STD (syphilis and IDU.

  13. Fortalezas y debilidades de los inventarios de cementos para su empleo en análisis de ciclo de vida (ACV

    Directory of Open Access Journals (Sweden)

    Aguado, A.

    2004-04-01

    Full Text Available Life-Cycle Assessment (LCA has become a common and accepted tool for quantifying the environmental impact of products. It is frequently used in some industrial sectors but this is not the case for construction products like cement. Reliable LCA require the use of reliable Life- Cycle Inventories (LCI; this is an important point because in Spain reliable LCI are scarce. An analysis of available LCI of different European cements is presented in this paper. This analysis includes the strengths and weaknesses of such inventories.

    El análisis del ciclo de vida (ACV de productos se ha convertido en una herramienta usual de cuantificación de aspectos medioambientales de los mismos. Esta técnica, está bastante extendida en productos industriales estándar, pero no tanto, en productos del sector de la construcción, como es el cemento. Por otro lado, para la realización de un ACV fiable es necesario contar con inventarios, asimismo fiables, lo cual adquiere gran importancia ya que en España no existen de forma sistemática. En este artículo se hace un análisis de los inventarios públicos a los que se ha tenido acceso, correspondientes a diferentes cementos del ámbito europeo, reflejándose las fortalezas y debilidades de los mismos.

  14. Segmento do Turismo de Negócios para as Agências de Viagem: Perfil de Clientes Corporativos de Fortaleza e Região Metropolitana

    Directory of Open Access Journals (Sweden)

    Keila Cristina Nicolau Mota

    2011-09-01

    Full Text Available O turismo de negócios vem se expandindo no mercado, contribuindo para a geração de emprego e renda, movimentando a economia. Com a globalização, os avanços da tecnologia, além das facilidades de transporte e comunicação, o turismo corporativo tem se tornado expressivo e tem exigido uma maior atenção, no sentido de promover um serviço condizente com as necessidades contemporâneas. Os clientes corporativos das agências de viagem apresentam características próprias e exigem profissionais capacitados. O presente artigo objetiva analisar empresas de Fortaleza e Região Metropolitana que são clientes de agências de viagem. Por meio de uma pesquisa de campo que identificou as principais características e tendências do setor nos meses de maio e junho de 2010, relacionando aspectos típicos do turismo de negócios. O mercado de viagens destes clientes tem contribuído para o desenvolvimento do setor, porém carece de agências que trabalhem a gestão de viagens de forma mais especializada.

  15. Occurrence of imposex in Thais haemastoma: possible evidence of environmental contamination derived from organotin compounds in Rio de Janeiro and Fortaleza, Brazil Ocorrência de imposex em Thais haemastoma: possíveis evidências de contaminação ambiental por compostos organotínicos no Rio de Janeiro e em Fortaleza, Brasil

    Directory of Open Access Journals (Sweden)

    Marcos Antonio Fernandez

    2002-04-01

    Full Text Available There are indications that the widespread use of organotin compounds (TBT and TPT as antifoulings, as stabilizers in plastic and as pesticides, has severely affected several species of marine organisms. The most striking effect of TBT and TPT as hormonal disruptors is the development of male organs in females of gastropods, currently denominated imposex. This syndrome can lead to the sterilization and death of affected organisms. The present work gives an overview of the present state of knowledge on imposex occurrence and reports results of a survey conducted in Guanabara Bay, Rio de Janeiro and in several sites along the coast of Fortaleza, Ceará State. Different stages of imposex development were verified in this survey, however, the most prominent levels appeared associated to known spot sources of TBT and TPT.Existem evidências de que a utilização amplamente disseminada de compostos organoestânicos (TBT e TPT como antiincrustantes, estabilizadores em plásticos e como pesticidas tenha afetado severamente diversas espécies de organismos marinhos. O mais característico efeito do TBT e do TPT como desreguladores endócrinos é o desenvolvimento de caracteres sexuais masculinos em fêmeas de gastrópodos, conhecido como imposex. Esta síndrome pode levar à esterelização e morte dos organismos afetados. O presente trabalho apresenta uma vista geral ao estado atual do conhecimento sobre a ocorrência do imposex, e reporta os resultados de um estudo conduzido na Baía de Guanabara, Rio de Janeiro, e ao longo da costa de Fortaleza, no Ceará. Diferentes estágios de desenvolvimento do imposex foram verificados neste estudo, os mais proeminentes parecendo associados às fontes pontuais locais conhecidas de TBT e TPT.

  16. Interactions entre muqueuse orale, salive et molécules de la flaveur

    OpenAIRE

    Ployon, Sarah

    2016-01-01

    Le rôle de la salive dans la perception sensorielle est de plus en plus reconnu, notamment par le biais des interactions physico-chimiques pouvant s’établir entre protéines salivaires et constituants alimentaires. Ce travail s’intéresse à la pellicule salivaire, la couche de protéines salivaires ancrées aux cellules épithéliales, et vise à caractériser les interactions pouvant s’établir d’une part entre ces protéines et épithélium oral, et d‘autre part entre ces protéines et les molécules de ...

  17. Estudo sobre os riscos da profissão de estivador do Porto do Mucuripe em Fortaleza Occupational risks among dock workers in the Port of Mucuripe, Fortaleza, Brazil

    Directory of Open Access Journals (Sweden)

    Francisco Fábio Gadelha Cavalcante

    2005-12-01

    Full Text Available Os estivadores do Porto do Mucuripe são trabalhadores sem vínculo empregatício com a Companhia Docas do Ceará. Atuam no convés e no porão dos navios, fazendo o embarque, o desembarque e a organização dos contêineres. Neste ambiente de constante exposição a riscos, o médico do trabalho é fundamental na organização de planos de prevenção de acidentes, de educação dos trabalhadores e de monitorização dos riscos. O objetivo do artigo é caracterizar e conhecer o estivador, correlacionar o ambiente portuário e o seu processo produtivo com os fatores de risco e os agravos associados, bem como ressaltar a importância da medicina do trabalho para o controle de tais riscos. O trabalho de campo foi desenvolvido nos meses de janeiro e de fevereiro de 2003, com a aplicação de 60 questionários aos estivadores. A análise dos dados evidencia que os principais problemas de saúde inerentes à profissão de estivador são, entre outros, os distúrbios osteoarticulares (hérnia de disco e desgastes na articulação do joelho e metabólicos (diabetes e hipertensão arterial. Estes se devem não só ao trabalho, mas também e, com grande influência, ao contexto de vida destes profissionais.The stevedores of the Port of Mucuripe are workers without employment bond with the Company Dock of Ceará. They act in the deck and the stowage of the ships, making the embarkment, the landing and the organization of containers. In this environment of constant exposition to risks, occupational physician is basic in the organization of plans of prevention of accidents, education of the workers and monitorization of the risks. The objective of this article is to characterize and to know the stevedore’s job, to correlate the port environment and its productive process with the factors of risk and the damages associates, as well as standing out the importance of the Occupational Medicine for the control of such risks. The fieldwork was developed in the

  18. The stormwater drain system as a pollution vector of the seashore in Fortaleza (Ceará State, Brazil Sistema de galerias pluviais como vetor poluente da zona costeira de Fortaleza, Ceará, Brasil

    Directory of Open Access Journals (Sweden)

    Regine H.S.F. Vieira

    2002-12-01

    Full Text Available The aim of this study was to make a diagnosis of coastal pollution through bacteriological analysis of water taken from stormwater drain systems and the nearby seashore. The results were submitted to statistical analysis as to differences in the Most Probable Number (MPN of fecal coliform (FC found between the stormwater drain systems and adjacent seashore locations both at low and high tides. The main conclusions were: (a most water samples collected from the stormwater systems presented MPN values for FC above 1,000 per 100 ml; (b only 20% of the samples from the adjacent seashore presented MPN values for FC above 1,000 per 100 ml, a fact which may be explained by the distance between the drain system outlets and the actual seashore; (c FC/100 ml values were invariably higher in the stormwater drain systems than in seawater; (d out of the 180 strains isolated, 118 were Escherichia coli; (e the highest in-sewer pollution rate was found at the sampling location in front of Imperial Othon Palace Hotel (IO-SEW, characterized by the presence of an everlasting puddle, while the most polluted seawater sample was taken in front of Statue of Iracema (SI-SEA; (g the high tide regime enhances the chance of pollution of the coastal zone by fecal coliforms; (h the high pollution indices by fecal coliforms can only be accounted for by the existence of illegal sewage pipelines connected to the stormwater drain systems.O objetivo deste trabalho foi realizar o diagnóstico da poluição costeira, através da análise bacteriológica da água de galerias pluviais e da zona marinha adjacente. Entre setembro de 2000 e março de 2001 foram obtidas 90 amostras, sendo 45 nas galerias e 45 na adjacente zona marinha, localizadas em frente aos seguintes pontos de coleta: Esplanada Hotel, Imperial Othon Palace e Estátua de Iracema. Os resultados foram apresentados como o Número Mais Provável (NMP de coliformes fecais por 100 ml (CF/100ml, e submetidos a compara

  19. Transient analysis capabilities at ABB-CE

    International Nuclear Information System (INIS)

    Kling, C.L.

    1992-01-01

    The transient capabilities at ABB-Combustion Engineering (ABB-CE) Nuclear Power are a function of the computer hardware and related network used, the computer software that has evolved over the years, and the commercial technical exchange agreements with other related organizations and customers. ABB-CEA is changing from a mainframe/personal computer network to a distributed workstation/personal computer local area network. The paper discusses computer hardware, mainframe computing, personal computers, mainframe/personal computer networks, workstations, transient analysis computer software, design/operation transient analysis codes, safety (licensed) analysis codes, cooperation with ABB-Atom, and customer support

  20. Synthesis and characterization of Ce doped MFI zeolite

    International Nuclear Information System (INIS)

    Kalita, Banani; Talukdar, Anup K.

    2012-01-01

    Highlights: ► Cerium was incorporated into the tetrahedral position of MFI zeolite structure. ► Unit cell volume increases with an increase of Ce content in the framework of MFI. ► A band at 310 nm in the UV–vis spectra indicates Ce incorporation in MFI structure. ► The mass loss (%) in the region 373–423 K decreases with increase of Ce in MFI. - Abstract: Ce doped MFI (mobil five) zeolites with different Si to (Ce + Al) and different Ce to Al ratios were synthesized by a hydrothermal synthesis method. All the samples were characterized by different techniques such as X-ray diffraction, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), UV–vis diffuse reflectance spectroscopy (DRS) and scanning electron microscopy (SEM). The results showed that almost pure MFI phase was obtained in all cases with incorporation of cerium metal into the framework. The increase in unit cell parameters observed with an increase in Ce content is indicative of incorporation of Ce into the framework structure of microporous material MFI. Corroboration of the framework incorporation of Ce into the MFI zeolite structure was also obtained from the UV–vis DRS spectra by the presence of an absorption band at 280 nm. TGA and SEM of the samples provide complementary evidence for Ce incorporation into the framework MFI structure.

  1. Synthesis of CeS and interactions with molten metals

    International Nuclear Information System (INIS)

    Krikorian, O.H.; Curtis, P.G.

    1988-01-01

    Hot-pressed and sintered discs of single-phase CeS were tested for interaction with molten aluminium, uranium, and iron to determine the conditions under which reaction first begins and the nature of the reaction. Aluminium begins to react with CeS at ∼ 1190 K, slowly dissolving cerium and forming a thin layer of Ce 3 S 4 at the reaction interface. At 1363 K, aluminium wets and spreads over the CeS surface and dissolves ∼ 01 at% Ce. Ce 3 Al 11 precipitates out in the aluminium phase on cooldown. Uranium does not react with CeS at 1673 K, but at 1873 K it wets and spreads on CeS and dissolves ∼ 100 atom ppm S, which precipitates out as US on cooldown. Iron wets CeS at 1873 K and 1973 K but does not spread or interact. Because of the desirable containment characteristics of CeS and similar sulfides for molten metals, we recommend their use in a number of applications. (author)

  2. Oxidation of Ce(III) in Foam Decontaminant by Ozone

    International Nuclear Information System (INIS)

    Jung, Chong Hun; Yoon, I. H.; Choi, W. K.; Moon, J. K.; Yang, H. B.; Lee, J. S.

    2016-01-01

    A nanoparticle-based foam decontaminant is composed of a surfactant and nanoparticles for the generation and maintenance of foam, and a chemical decontamination agent made of Ce(IV) dissolved in nitric acid. Ce(IV) will be reduced to Ce(III) through the decontamination process. Oxidizing cerium(III) can be reused as a decontamination agent, Ce(IV). Oxidation treatment technology by ozone uses its strong oxidizing power. It can be regarded as an environmentally friendly process, because ozone cannot be stored and transported like other industrial gases (because it quickly decays into diatomic oxygen) and must therefore be produced on site, and used ozone can decompose immediately. The ozonation treatment of Ce(III) in foam decontaminant containing a surfactant is necessary for the effective regeneration of Ce(III). Thus, the present study was undertaken to determine the optimal conditions for ozonation treatment in the regeneration of Ce(III) into Ce(IV) in the nanoparticle-based foam decontaminant containing surfactant. This study was undertaken to determine the optimal conditions for ozonation treatment in the regeneration of Ce(III) to Ce(IV) in nanoparticle-based foam decontaminant containing a TBS surfactant. The oxidation conversion rate of Ce(III) was increased with an increase in the flow rate of the gas mixture and ozone injection amount. The oxidation time required for the 100% oxidation conversion of Ce(III) to Ce(IV) at a specific ozone injection amount can be predicted from these experimental data

  3. Oxidation of Ce(III) in Foam Decontaminant by Ozone

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Chong Hun; Yoon, I. H.; Choi, W. K.; Moon, J. K.; Yang, H. B. [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of); Lee, J. S. [Gachon University, Seongnam (Korea, Republic of)

    2016-10-15

    A nanoparticle-based foam decontaminant is composed of a surfactant and nanoparticles for the generation and maintenance of foam, and a chemical decontamination agent made of Ce(IV) dissolved in nitric acid. Ce(IV) will be reduced to Ce(III) through the decontamination process. Oxidizing cerium(III) can be reused as a decontamination agent, Ce(IV). Oxidation treatment technology by ozone uses its strong oxidizing power. It can be regarded as an environmentally friendly process, because ozone cannot be stored and transported like other industrial gases (because it quickly decays into diatomic oxygen) and must therefore be produced on site, and used ozone can decompose immediately. The ozonation treatment of Ce(III) in foam decontaminant containing a surfactant is necessary for the effective regeneration of Ce(III). Thus, the present study was undertaken to determine the optimal conditions for ozonation treatment in the regeneration of Ce(III) into Ce(IV) in the nanoparticle-based foam decontaminant containing surfactant. This study was undertaken to determine the optimal conditions for ozonation treatment in the regeneration of Ce(III) to Ce(IV) in nanoparticle-based foam decontaminant containing a TBS surfactant. The oxidation conversion rate of Ce(III) was increased with an increase in the flow rate of the gas mixture and ozone injection amount. The oxidation time required for the 100% oxidation conversion of Ce(III) to Ce(IV) at a specific ozone injection amount can be predicted from these experimental data.

  4. Calculations of coupled channels for the reaction 142Ce(α,α1)142 Ce*

    International Nuclear Information System (INIS)

    Appoloni, C.R.; Lepine, A.

    1980-01-01

    Elastic and inelastic angular distribution were made for α particles of 18 Mev in 142 Ce. It was determined the angular distributions corresponding to the various states of the target nucleus. The angular distributions corresponding to the first five states were analyzed within the framework of the Anarhmonic vibrational and symmetric rotational models. (A.C.A.S.) [pt

  5. Band structures in near spherical 138Ce

    Science.gov (United States)

    Bhattacharjee, T.; Chanda, S.; Bhattacharyya, S.; Basu, S. K.; Bhowmik, R. K.; Das, J. J.; Pramanik, U. Datta; Ghugre, S. S.; Madhavan, N.; Mukherjee, A.; Mukherjee, G.; Muralithar, S.; Singh, R. P.

    2009-06-01

    The high spin states of N=80138Ce have been populated in the fusion evaporation reaction 130Te( 12C, 4n) 138Ce at E=65 MeV. The γ transitions belonging to various band structures were detected and characterized using an array of five Clover Germanium detectors. The level scheme has been established up to a maximum spin and excitation energy of 23 ℏ and 9511.3 keV, respectively, by including 53 new transitions. The negative parity ΔI=1 band, developed on the 6536.3 keV 15 level, has been conjectured to be a magnetic rotation band following a semiclassical analysis and comparing the systematics of similar bands in the neighboring nuclei. The said band is proposed to have a four quasiparticle configuration of [πgh]⊗[. Other band structures are interpreted in terms of multi-quasiparticle configurations, based on Total Routhian Surface (TRS) calculations. For the low and medium spin states, a shell model calculation using a realistic two body interaction has been performed using the code OXBASH.

  6. Peculiarities of the intermediate valence state of Ce in CeM2Si2 (M = Fe, Co, Ni) compounds

    International Nuclear Information System (INIS)

    Koterlyn, M.; Shcherba, I.; Yasnitskii, R.; Koterlyn, G.

    2007-01-01

    The results of thermoelectric power and the electrical resistivity measurements connected with the intermediate valence (IV) of Ce are presented for the compounds CeM 2 Si 2 (M = Fe, Co, Ni) in the temperature range of 4-800 K. It is shown that CeM 2 Si 2 are Kondo-lattices with the coherence scale T coh ∼ 60-80 K and the so-called single-site Kondo temperature T K ∼ 10 3 K. On the example of CeNi 2 Si 2 we have studied the changes in the structure of density of f states (f-DOS) near the Fermi energy caused by atomic substitutions. The results of structural, transport, magnetic, and Ce L III X-ray absorption spectra measurements in the series Ce 1-x La x Ni 2 Si 2 (0 ≤ x ≤ 0.6), Ce(Ni 1-y Cu y ) 2 Si 2 (0 ≤ y ≤ 0.6) and CeNi 2 (Si 1-z Ge z ) 2 (0 ≤ z ≤ 0.5) are presented. We found that the IV state of Ce in the CeM 2 Si 2 is an evidence of possible opening a wide pseudogap Δ ∼ kT K within the f-DOS structure slightly above the Fermi energy

  7. El periodista, entre el Poder

    Directory of Open Access Journals (Sweden)

    JL Dader

    2014-10-01

    Full Text Available El periodismo se debate, desde sus orígenes, entre la reproducción servil de versiones interesadas o la distorsión de propio cuño, por conocimiento insuficiente de una realidad que sólo puede entrever. Los poderes que amenazan la independencia periodística no han hecho más que crecer o aumentar su habilidad con el paso del tiempo. Surgido como ‘oficio de esclavos’ en la época romana, muchos indicadores actuales parecen retornarle al punto de partida: relaciones públicas estratégicas a gran escala, auge de los ‘spin doctors’, extorsión descarnada en las democracias más débiles y populismo de las redes sociales, entre otros. Todo ello, unido o alentado por la degradación interna y el desaliento de la propia institución periodística incapaz de distanciarse de todas esas fuerzas. Su respuesta no puede ser de alianza o competencia con los poderes que la circundan, sino de hábil distanciamiento para moverse entre todos ellos sin dejar de ejercer la vigilancia que los ciudadanos siguen necesitando de su ejercicio profesional.

  8. CEF-scheme of a semimetal Ce3Sn7

    International Nuclear Information System (INIS)

    Okuda, Yusuke; Yamamoto, Takeshi; Honda, Daisuke; Shishido, Hiroaki; Galatanu, Andrei; Haga, Yoshinori; Matsuda, Tatsuma D.; Takeuchi, Tetsuya; Kindo, Koichi; Sugiyama, Kiyohiro; Settai, Rikio; O-bar nuki, Yoshichika

    2005-01-01

    We measured the magnetic susceptibility and magnetization of an antiferromagnet Ce 3 Sn 7 with the orthorhombic crystal structure. The experimental data are found to be well explained on the basis of the crystalline electric field (CEF) 4f-scheme under the assumption that two Ce atoms in the 2(a) site possess a magnetic moment of 0.36μ B /Ce and one Ce atom in the 4(i) site possesses no magnetic moment as in a valence fluctuating compound CeSn 3 , which was previously proposed by Bonnet et al. Furthermore, we carried out the de Haas-van Alphen experiment. The detected Fermi surfaces are many in number but are extremely small in volume, indicating that Ce 3 Sn 7 is a semimetal

  9. A pressure study of CePt{sub 3}B

    Energy Technology Data Exchange (ETDEWEB)

    Rauch, Daniela; Suellow, Stefan [Institute of Condensed Matter Physics, University of Technology Braunschweig, Braunschweig (Germany); Hartwig, Steffen [Institute of Condensed Matter Physics, University of Technology Braunschweig, Braunschweig (Germany); BENSC, Helmholtz Zentrum Berlin, Berlin (Germany); Hidaka, Hiroyuki; Yamazaki, Seigo; Amitsuka, Hiroshi [Department of Physics, Hokkaido University, Sapporo (Japan); Bauer, Ernst [Institute of Solid State Physics, Vienna University of Technology, Vienna (Austria)

    2013-07-01

    CePt{sub 3}B is isostructural to the non-centro symmetric heavy-fermion superconductor CePt{sub 3}Si. In contrast to the latter system, CePt{sub 3}B exhibits a complex magnetically ordered state at low temperatures, with an antiferromagnetic phase below T{sub N}=7.8 K and a weakly ferromagnetic transition below T{sub C}∼5 K. CePt{sub 3}B can be understand as a low pressure variant of CePt{sub 3}Si. Here we report a study of CePt{sub 3}B by means of high pressure magnetization measurements, this way in particular accessing the pressure evolution of the ferromagnetic transition temperature T{sub C}. From our investigation up to about 40 kbar we observe an almost constant transition temperature T{sub C} with pressure. This behavior we discuss in the context of alloying studies on this material.

  10. Thèses dans le domaine de l’image soutenues en France et en Espagne entre avril 2006 et juillet 2008

    Directory of Open Access Journals (Sweden)

    Nancy Berthier

    2011-06-01

    Full Text Available Ce texte recense les travaux de recherches soutenus en France et en Espagne entre avril 2006 et juillet 2008. Les résumés ont été fournis par les auteurs des travaux recensés.

  11. Distribution and Translocation of 141Ce (III) in Horseradish

    Science.gov (United States)

    Guo, Xiaoshan; Zhou, Qing; Lu, Tianhong; Fang, Min; Huang, Xiaohua

    2007-01-01

    Background and Aims Rare earth elements (REEs) are used in agriculture and a large amount of them contaminate the environment and enter foods. The distribution and translocation of 141Ce (III) in horseradish was investigated in order to help understand the biochemical behaviour and toxic mechanism of REEs in plants. Method The distribution and translocation of 141Ce (III) in horseradish were investigated using autoradiography, liquid scintillation counting (LSC) and electron microscopic autoradiography (EMARG) techniques. The contents of 141Ce (III) and nutrient elements were analysed using an inductively coupled plasma-atomic emission spectrometer (ICP-AES). Results The results from autoradiography and LSC indicated that 141Ce (III) could be absorbed by horseradish and transferred from the leaf to the leaf-stalk and then to the root. The content of 141Ce (III) in different parts of horseradish was as follows: root > leaf-stalk > leaf. The uptake rates of 141Ce (III) in horseradish changed with the different organs and time. The content of 141Ce (III) in developing leaves was greater than that in mature leaves. The results from EMARG indicated that 141Ce (III) could penetrate through the cell membrane and enter the mesophyll cells, being present in both extra- and intra-cellular deposits. The contents of macronutrients in horseradish were decreased by 141Ce (III) treatment. Conclusions 141Ce (III) can be absorbed and transferred between organs of horseradish with time, and the distribution was found to be different at different growth stages. 141Ce (III) can enter the mesophyll cells via apoplast and symplast channels or via plasmodesmata. 141Ce (III) can disturb the metabolism of macronutrients in horseradish. PMID:17921527

  12. Le cerveau de cristal ce que nous révèle la neuro-imagerie

    CERN Document Server

    Le Bihan, Denis

    2012-01-01

    Montrer l’activité du cerveau s’appliquant à une fonction telle que parler, lire, compter ou simplement penser, voilà désormais ce que rendent possible les progrès récents de l’imagerie par résonance magnétique, l’IRM. Qu’il s’agisse de la perception musicale, des processus inconscients à l’origine de nos décisions, du développement du cerveau in utero, de l’étude des interactions entre gènes et environnement, de l’étude des anomalies pouvant être à l’origine de certaines maladies psychiatriques, les nouvelles techniques de la « neuro-imagerie » ouvrent des champs d’étude infinis et posent à l’éthique des questions inédites. Au croisement de la physique, des neurosciences et de la médecine, l’un des pionniers de ce domaine en pleine expansion donne, dans ce livre sans égal, les clés nécessaires pour comprendre ce que ces techniques vont apporter à notre connaissance de nous-mêmes. La découverte d’un univers fascinant, le nôtre, notre cerveau.

  13. Synthesis and structural characterization of Ce-doped bismuth titanate

    International Nuclear Information System (INIS)

    Pavlovic, Nikolina; Srdic, Vladimir V.

    2009-01-01

    Ce-modified bismuth titanate nanopowders Bi 4-x Ce x Ti 3 O 12 (x ≤ 1) have been synthesized using a coprecipitation method. DTA/TG, FTIR, XRD, SEM/EDS and BET methods were used in order to investigate the effect of Ce-substitution on the structure, morphology and sinterability of the obtained powders. The phase structure investigation revealed that after calcinations at 600 deg. C powder without Ce addition exhibited pure bismuth titanate phase; however, powders with Ce (x = 0.25, 0.5 and 0.75) had bismuth titanate pyrochlore phase as the second phase. The strongest effect of Ce addition on the structure was noted for the powder with the highest amount of Ce (x = 1) having a cubic pyrochlore structure. The presence of pure pyrochlore phase was explained by its stabilization due to the incorporation of cerium ions in titanate structure. Ce-modified bismuth titanate ceramic had a density over 95% of theoretical density and the fracture in transgranular manner most probably due to preferable distribution of Ce in boundary region

  14. Inverted opal luminescent Ce-doped silica glasses

    Directory of Open Access Journals (Sweden)

    R. Scotti

    2006-01-01

    Full Text Available Inverted opal Ce-doped silica glasses (Ce : Si molar ratio 1 ⋅ 10−3 were prepared by a sol-gel method using opals of latex microspheres as templates. The rare earth is homogeneously dispersed in silica host matrix, as evidenced by the absence of segregated CeO2, instead present in monolithic Ce-doped SG with the same cerium content. This suggests that the nanometric dimensions of bridges and junctions of the host matrix in the inverted opal structures favor the RE distribution avoiding the possible segregation of CeO2.

  15. CeO2-ZrO2 ceramic compounds

    International Nuclear Information System (INIS)

    Melo, F.C.L.; Cairo, C.A.C.; Devezas, T.C.; Nono, M.C.A.

    1988-01-01

    In order to study the mechanical properties of tetragonal polycrystal zirconia stabilized with ceria various powder compositions with different CeO 2 content were made. Modulus of rupture for those compounds was measured. Tetragonal retained phase was determined for samples of CeO 2 -ZrO 2 ceramics with and without superficial mechanical treatment. The experimental results allowed us to evaluate the effects of CeO 2 content and sintering temperature in the mechanical properties and tetragonal transformed phase (t→ m) in ceramics of CeO 2 -ZrO 2 systems. (author) [pt

  16. The highest spin discrete levels in 131,132Ce

    International Nuclear Information System (INIS)

    Paul, E S; Choy, P T W; Andreoiu, C; Boston, A J; Evans, A O; Fox, C; Gros, S; Nolan, P J; Rainovski, G; Sampson, J A; Scraggs, H C; Walker, A; Appelbe, D E; Joss, D T; Simpson, J; Gizon, J; Astier, A; Buforn, N; Prevost, A; Redon, N; Stezowski, O; Nyako, B M; Sohler, D; Timar, J; Zolnai, L; Bazzacco, D; Lunardi, S; Petrache, C M; Bednarczyk, P; Curien, D; Kintz, N; Ragnarsson, I

    2006-01-01

    The three superdeformed (SD) bands in 132 Ce and the two SD bands in 131 Ce have been extended to higher spin following experiments with the EUROBALL IV spectrometer. The two SD bands in 131 Ce have been linked together. However, despite the relatively high population intensity of the bands (up to 5% of the respective channel), it has not been possible to unambiguously link any of the five SD bands into the low-spin, normally deformed structures of 131,132 Ce

  17. Análise dos casos de sífilis gestacional e congênita nos anos de 2008 a 2010 em Fortaleza, Ceará, Brasil

    Directory of Open Access Journals (Sweden)

    Ana Rita Paulo Cardoso

    Full Text Available Resumo O presente estudo analisa os casos notificados de sífilis em gestantes e os possíveis desfechos para o feto e o recém-nascido em Fortaleza, Ceará. Estudo transversal que analisou 175 casos notificados de sífilis em gestantes, pareados com as correspondentes notificações de sífilis congênita durante os anos de 2008 a 2010. Utilizou-se estatística descritiva com frequências absolutas e relativas, medidas de tendência central e dispersão e qui-quadrado de Pearson para analisar a significância estatística, utilizando o valor de p < 0,05. Foram analisadas variáveis sociodemográficas das gestantes/puérperas, da assistência prestada aos recém-nascidos e o desfecho dos casos. Os resultados mostraram a ocorrência da sífilis em mulheres jovens com mais de 85,0% de tratamentos inadequados, 62,9% dos parceiros sexuais não tratados ou com informação ignorada e percentuais elevados da não realização dos exames preconizados para a investigação de sífilis congênita nas crianças. Dentre os conceptos, cinco foram natimortos, um aborto e três óbitos neonatais. A falta de tratamento adequado dos casos de sífilis em gestantes pode estar associada à morbimortalidade dos conceptos, mantendo essa infecção como um fardo no rol dos problemas de saúde pública.

  18. ASPECTOS ECOLÓGICOS DA COMUNIDADE DE PARASITOS EMDUAS ESPÉCIES DE LORICARIIDAE DA BACIA IGARAPÉ FORTALEZA, ESTADO DO AMAPÁ, BRASIL

    Directory of Open Access Journals (Sweden)

    Raissa Alves Gonçalves

    2014-04-01

    Full Text Available Os parasitos têm sido reconhecidos como importantes componentes dos ecossistemas. Esses usam o ambiente para a sua transmissão e podem infectar diversas espécies de peixe no ecossistema. O presente estudo investigou a ecologia parasitária em Squaliforma emarginata e Harttia duriventris da bacia Igarapé Fortaleza, região de Macapá, estado do Amapá, Norte do Brasil. Para ambos os peixes houve similar nível de infecção por Ichthyophthirius multifiliis (Ciliophora, parasito dominante e com dispersão agregada. Spironucleus sp. (Hexamitidae ocorreu somente nas brânquias de H. duriventris, enquanto Trinigyrus mourei (Monogenoidea e Procamallanus inopinatus (Camallanidae foram encontrados somente S. emarginata. O índice de Brillouin, riqueza de espécies de parasitos, uniformidade e dominância de Berger-Parker foram maiores em S. emarginata, mas paraambos os hospedeiros a comunidade parasitária foi caracterizada por baixa diversidade e baixa uniformidade. Em H. duriventris e S. emarginata, o baixo parasitismo não afetou o fator de condição relativo (Kn dos hospedeiros. Em S. emarginata houve correlação positiva da abundância de I. multifiliis com o comprimento, peso e Kn dos hospedeiros,enquanto que em H. druventris somente o peso e Kn mostram correlação com a abundância desse ciliado. Este foi o primeiro registro de I. multifiliis, Spironucleus sp. e P.inopinatus para H. duriventris e S. emarginata. Palavras-chave: Amazônia, Diversidade, Parasitos, Peixes de água doce, Metazoários. DOI: http://dx.doi.org/10.18561/2179-5746/biotaamazonia.v4n1p15-21

  19. ETUDE VARIATIONNELLE DU CONTACT SANS FROTTEMENT ENTRE UN CORPS ELASTIQUE ET UNE FONDATION RIGIDE

    Directory of Open Access Journals (Sweden)

    B TENIOU

    2002-06-01

    Full Text Available Le but de ce travail est l'étude variationnelle du contact sans frottement entre un corps élastique et une fondation rigide. La loi de comportement de ce corps est non-linéaire et le contact est modélisé par les conditions de Signorini. Ce travail est divisé en trois parties. La première est destinée à définir quelques outils de l'analyse fonctionnelle. La seconde est consacrée aux résultats d'existence et d'unicité de la solution. La troisième est réservée à l'étude de quelques propriétés de la solution. Ce travail diffère de celui de Drabla, Sofonea et Teniou [1] par l'étude de nouvelles propriétés de la solution qui sont dues à l'introduction d'un paramètre dans la loi de comportement et le changement d'une condition aux limites.

  20. Comparison of Spectral and Scintillation Properties of LuAP:Ce and LuAP:Ce,Sc Single Crystals

    Science.gov (United States)

    Petrosyan, Ashot G.; Derdzyan, Marina; Ovanesyan, Karine; Shirinyan, Grigori; Lecoq, Paul; Auffray, Etiennette; Kronberger, Matthias; Frisch, Benjamin; Pedrini, Christian; Dujardin, Christophe

    2009-10-01

    Scintillation properties of LuAP:Ce and LuAP:Ce,Sc crystal series were studied under excitation by gamma-rays from a 137Cs source. Both series demonstrated comparable optical quality in terms of underlying absorption at 260 nm, slope of the optical edge and transmission in the range of emission. The light yield of LuAP:Ce crystals measured in 0.2 cm times 0.2 cm times 0.8 cm pixels increases linearly with the Ce concentration reaching at 0.58 at. % 6448 plusmn 322 ph/MeV and 9911 plusmn 496 ph/MeV in the long and in the short directions respectively (the light yield ratio is 65%) and shows no sign of light saturation. The energy resolution is found to depend, among other factors, on the uniformity of Ce concentration within the pixels and is improved to 7.1 plusmn 0.4% (I = 0.2 cm), 9.5 plusmn 0.5% (I = 0.8 cm). Intentional co-doping with Sc + ions was tested and resulted in increase of the Ce distribution coefficient to about 0.3. This enabled to increase the concentration of Ce in LuAP:Ce,Sc crystals up to 0.7 at. %, while conserving high optical quality. In contrast to LuAP:Ce, the light yield in LuAP:Ce,Sc crystals does not increase with Ce concentration, the photo peak being gradually suppressed. The involved mechanisms are discussed basing on measurements of the unit cell volumes, Ce concentration uniformity, x-ray rocking spectra, absorption spectra of pure and variously doped LuAP crystals, and emission spectra under different excitations.

  1. Théâtre et Neuroscience: l’éveil d’un nouveau dialogue entre arts et science

    Directory of Open Access Journals (Sweden)

    Dorys Faria

    2014-05-01

    Full Text Available Cet article a pour but de démontrer, à travers une perspective historique, que l’étude neurophysiologique et expressive des émotions surgit en tant que vecteur facilitateur du dialogue entre le théâtre et les sciences du vivant. Font également partie de ce travail l’exploration de certains concepts neuroscientifiques actuellement utilisés dans la recherche expérimentale sur les émotions humaines, ainsi que la réflexion sur les liens possibles entre la neuroscience des émotions et le travail de l’acteur

  2. C-E productivity improvement program

    International Nuclear Information System (INIS)

    Chiu, C.; Ching, B.; Van Haltern, M.L.

    1984-01-01

    This paper describes the C-E Productivity Improvement Program (CEPIP), which is a computer algorithm for heat rate monitoring and diagnostics for a nuclear power plant. CEPIP uses the pattern recognition technique to identify cause(s) of heat rate degradation. The benefits of such an automated program to the plant performance engineer include early identification of the degrading component(s), provision of necessary economic information (cost of energy loss) to the performance engineer so that he can decide when to repair the degrading components, and identification of operator actions resulting in heat rate degradation (such as closing the valve on the live steam extraction line for the second stage of reheat). In summary, CEPIP improves the overall plant performance by increasing the capacity factor. CEPIP was developed to meet the growing needs of the utilities for an automated performance program. The diagnostic capability has been verified by plant data

  3. Radiative β-decay in 141Ce

    International Nuclear Information System (INIS)

    Rao, K.S.G.; Sanjeeviah, H.

    1982-01-01

    The spectral distribution of the continuous gamma radiation accompanying non-unique first forbidden β-decay of 32 d 141 Ce has been measured in the energy range 200-560 keV with a 4.5 cm x 5.08 cm NaI(Tl) scintillation spectrometer. The source electrons were eliminated using an electromagnet. The raw spectrum was corrected for pile-up, finite energy resolution, Compton electron distribution and geometrical γ-detection efficiency using the method of Liden and Starfelt. The corrected distribution is compared with the direct and detour theories of Lewis and Ford, and Ford and Martin, respectively. Total disagreement between experiment and theory was observed over the entire region of the investigated spectrum. In the energy region from 200 to 350 keV, however, the measured spectrum lies between the direct and detour theories. (orig.)

  4. Dependence of the Ce(iii)/Ce(iv) ratio on intracellular localization in ceria nanoparticles internalized by human cells

    KAUST Repository

    Ferraro, Daniela; Tredici, Ilenia G.; Ghigna, Paolo; Castillio-Michel, Hiram; Falqui, Andrea; Di Benedetto, Cristiano; Alberti, Giancarla; Ricci, Vittorio; Anselmi-Tamburini, Umberto; Sommi, Patrizia

    2017-01-01

    CeO2 nanoparticles (CNPs) have been investigated as promising antioxidant agents with significant activity in the therapy of diseases involving free radicals or oxidative stress. However, the exact mechanism responsible for CNP activity has not been completely elucidated. In particular, in situ evidence of modification of the oxidative state of CNPs in human cells and their evolution during cell internalization and subsequent intracellular distribution has never been presented. In this study we investigated modification of the Ce(iii)/Ce(iv) ratio following internalization in human cells by X-ray absorption near edge spectroscopy (XANES). From this analysis on cell pellets, we observed that CNPs incubated for 24 h showed a significant increase in Ce(iii). By coupling on individual cells synchrotron micro-X-ray fluorescence (μXRF) with micro-XANES (μXANES) we demonstrated that the Ce(iii)/Ce(iv) ratio is also dependent on CNP intracellular localization. The regions with the highest CNP concentrations, suggested to be endolysosomes by transmission electron microscopy, were characterized by Ce atoms in the Ce(iv) oxidation state, while a higher Ce(iii) content was observed in regions surrounding these areas. These observations suggest that the interaction of CNPs with cells involves a complex mechanism in which different cellular areas play different roles.

  5. Dependence of the Ce(iii)/Ce(iv) ratio on intracellular localization in ceria nanoparticles internalized by human cells

    KAUST Repository

    Ferraro, Daniela

    2017-01-09

    CeO2 nanoparticles (CNPs) have been investigated as promising antioxidant agents with significant activity in the therapy of diseases involving free radicals or oxidative stress. However, the exact mechanism responsible for CNP activity has not been completely elucidated. In particular, in situ evidence of modification of the oxidative state of CNPs in human cells and their evolution during cell internalization and subsequent intracellular distribution has never been presented. In this study we investigated modification of the Ce(iii)/Ce(iv) ratio following internalization in human cells by X-ray absorption near edge spectroscopy (XANES). From this analysis on cell pellets, we observed that CNPs incubated for 24 h showed a significant increase in Ce(iii). By coupling on individual cells synchrotron micro-X-ray fluorescence (μXRF) with micro-XANES (μXANES) we demonstrated that the Ce(iii)/Ce(iv) ratio is also dependent on CNP intracellular localization. The regions with the highest CNP concentrations, suggested to be endolysosomes by transmission electron microscopy, were characterized by Ce atoms in the Ce(iv) oxidation state, while a higher Ce(iii) content was observed in regions surrounding these areas. These observations suggest that the interaction of CNPs with cells involves a complex mechanism in which different cellular areas play different roles.

  6. Dopant concentration dependence of radiation-induced positive hysteresis of Ce:GSO and Ce:GSOZ

    International Nuclear Information System (INIS)

    Yanagida, Takayuki; Fujimoto, Yutaka; Watanabe, Kenichi

    2014-01-01

    Positive hysteresis and radiation tolerance to high-dose radiation exposure were investigated for Ce 0.5, 1, and 1.5%-doped Gd 2 SiO 5 (GSO) and for Zr co-doped GSO with the same Ce concentrations (GSOZ). When they were irradiated by 200–800 Gy 60 Co in 200 Gy steps, all Ce-doped GSO samples exhibited light yield enhancement (positive hysteresis). On the other hand, the light yield of GSOZ decreased greatly. Ce 0.5%-doped GSO showed the highest positive hysteresis, with ∼20% light yield enhancement. When the Ce concentration was increased, the positive hysteresis became weaker. - Highlights: • Positive hysteresis Ce 0.5, 1, and 1.5% doped GSO and GSOZ are studied. • Ce 0.5, 1, and 1.5% doped GSO show the positive hysteresis by 2–8 M rad 60 Co irradiation. • Ce 0.5, 1, and 1.5% doped GSOZ do not show the positive hysteresis. • By Zn co-doping, radiation tolerance of GSO becomes weaker. • By dense Ce doping, radiation tolerance of GSO and GSOZ are improved

  7. Traducerea: între ce se poate traduce și ce trebuie tradus

    Directory of Open Access Journals (Sweden)

    Magda Jeanrenaud

    2016-02-01

    Full Text Available Pornind de la o tulburătoare interpretare a lui Jacques Derrida, studiul de față își propune să investigheze și încearcă să explice blocajul ce intervine în versiunile englezești, franceze și românești (semnate de Antoine Berman, Alexis Nouss, Steven Rendall, Catrinel Pleșu etc. ale celebrului text al lui Walter Benjamin, Die Aufgabe des Übersetzers, atunci cînd traducătorii transpun în cele trei limbi țintă cele două citate cuprinse în acesta: un citat din Mallarmé, lăsat netradus de Benjamin însuși, și un altul, din Pannwitz. Într-un fel sau altul, ambele citate au o formă discursivă ce lasă să se întrevadă o sintaxă ce se abate deliberat de la normă, ca și cum ar fi deja niște „traduceri”. Analiza mai pune în evidență și comportamentul (cumva o dominantă a psihologiei traducătorilor? celor ce au transpus textul benjaminian, comportament marcat de obsesia lizibilității văzută ca o trăsătură congenitală a oricărei traduceri, chiar și atunci cînd textul original nu tinde spre aceasta. De unde și dilema, dureroasă, legată de spinoasa chestiune a intenționalității textului (nu doar de tradus...

  8. Características da clientela atendida por crise hipertensiva na emergência de um hospital municipal de Fortaleza, Estado do Ceará = Characteristics of the clientele assisted for hypertensive crisis in the emergency of a municipal hospital in Fortaleza, Ceará State

    Directory of Open Access Journals (Sweden)

    Ione Cavalcante Lacerda

    2010-01-01

    Full Text Available Objetivou-se descrever as características da clientela com crise hipertensiva. A pesquisa, quantitativa, descritiva e documental foi realizada em um hospital municipal de Fortaleza, Estado do Ceará em 2006. Na análise de 790 fichas de atendimento, observamos que 48,2% dos pacientes que apresentavam crise hipertensiva, encontravam-se na faixa etária de 40 a 59 anos e a maioria dos indivíduos era de casados (57,5%. Os principais sintomas encontrados foram cefaleia (35,7% e dor precordial (12.3% e, em 36,8% das fichas, não houve registro de sinais e sintomas. As medicações mais prescritas foram o captopril (90,6% e furosemida (53%. Conclui-se que a crise hipertensiva acomete muitos adultos, a maioria casados e que geralmente vão à emergência para fazer avaliação clínica de algum sinal/sintoma. Ressalta-se a necessidade de se alertar os profissionais de saúde quanto à importância do registro para conhecimento e compreensão das características dessa clientela para o controle e a prevenção da crise hipertensiva.The objective was to describe the characteristics of the clientele with hypertensive crisis. The research, which was quantitative, descriptive and documentary, was conducted at a municipal hospital in Fortaleza, Ceará Estate in 2006. In the analysis of 790 patient files, we found that 48.2% of patients presenting hypertensive crisis were in the age group between 40 and 59 years old. Most of the individuals were married (57.5%. The main symptoms were headache (35.7% and chest pain (12.3%, and in 36.8% of files there was no record of signs and symptoms. The most prescribed medications were captopril (90.6% and furosemide (53%. We conclude that hypertensive crisis affects many adults, most married and who usually go to the emergency room for clinical evaluation of a sign/symptom. We emphasize the need to alert health professionals about the importance of records for knowledge and understanding of the characteristics of that

  9. Evidence of complex magnetism in CePt3C

    International Nuclear Information System (INIS)

    Vejpravova, J.; Prokleska, J.; Danis, S.; Uhlirova, K.; Sechovsky, V.

    2006-01-01

    CePt 3 C has been synthesized and studied by powder X-ray diffraction (at RT), specific heat, resistivity and magnetization measurements at temperatures from RT down to 0.4K and in magnetic fields up to 10T. A possible scenario for the ground state of CePt 3 C based on the observed phenomena is proposed

  10. 32 CFR Appendix B to Part 247 - CE Publications

    Science.gov (United States)

    2010-07-01

    ... dining at a restaurant or attending a musical performance) of a commercial organization whose primary... potentially become the CE contractor. Upon evaluation of the competing proposals by the Source Selection Advisory Committee (SSAC) and selection of a winner by the selecting official, the CE contract shall be...

  11. Ce que nous faisons | CRDI - Centre de recherches pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le CRDI appuie des travaux de recherche dans les pays en voie de développement en vue de produire un changement réel et durable. Ce savoir peut servir d'outil pour résoudre des problèmes mondiaux urgents. Nous partageons ce savoir avec les autres en :

  12. Facile hydrothermal synthesis of CeO2 nanopebbles

    Indian Academy of Sciences (India)

    Administrator

    However, to the best of our knowledge the reports on the synthesis of CeO2 ... The base pressure of the XAS chamber was in the range of 10–8 Pa. A Shimadzu ... scopy was investigated to confirm the crystalline quality of CeO2 nanopebbles.

  13. Ações de prevenção dos acidentes e violências em crianças e adolescentes, desenvolvidas pelo setor público de saúde de Fortaleza, Ceará, Brasil

    Directory of Open Access Journals (Sweden)

    Pordeus Augediva Maria Jucá

    2003-01-01

    Full Text Available Este artigo trata das ações de prevenção de acidentes e violências, desenvolvidas pelo setor público de saúde de Fortaleza, Estado do Ceará, Brasil. Originou-se da necessidade sentida pelas autoras diante das estatísticas de mortalidade por estas causas na infância e adolescência, que parecia não haver por parte do setor público de saúde ações de prevenção. Realizamos um levantamento junto aos gerentes das Coordenadorias de Saúde das seis Secretarias Executivas Regionais (SER, setores geográficos onde está organizada a rede de saúde de Fortaleza, por meio da aplicação de questionário. O levantamento mostrou que as ações desenvolvidas são pontuais, não existindo como política de saúde, visto que ocorrem na forma de campanhas, têm como foco principal a educação em saúde voltada para a prevenção do uso de álcool e outras drogas ilícitas, violência e acidentes domésticos e delinqüência juvenil. Apenas na SER-I existia parceria com outros setores nas atividades desenvolvidas. Concluímos que o setor público de saúde de Fortaleza, necessita incorporar em sua agenda a prevenção de acidentes e violências na infância e adolescência, utilizando a intersetorialidade e somando esforços para que o conhecimento até agora adquirido sobre a prevenção destes agravos se transforme em realidade.

  14. Ferroelectric relaxor Ba(TiCe)O3

    International Nuclear Information System (INIS)

    Chen Ang; Zhi Jing; Yu Zhi

    2002-01-01

    The dielectric behaviour of Ba(Ti 1-y Ce y )O 3 solid solutions (y=0-0.3) has been studied. A small amount of Ce doping (y=0.02) has weak influence on the dielectric behaviour of Ba(Ti 1-y Ce y )O 3 . With increasing Ce concentration, three phase transitions of pure BaTiO 3 are pinched into one rounded dielectric peak with frequency dispersion, and the relaxation time follows the Vogel-Fulcher relation. The evolution from a normal ferroelectric to a ferroelectric relaxor is emphasized. High strains (S=∼0.1-0.19%) with a small hysteresis under ac fields are obtained in ferroelectric relaxors Ba(Ti 1-y Ce y )O 3 . The physical mechanism of the relaxation process, the pinching effect of the phase transitions and their influence on the ferroelectric and electrostrictive behaviour are discussed. (author)

  15. Photodynamic Processes in Fluoride Crystals Doped with Ce3+

    Directory of Open Access Journals (Sweden)

    Pavlov V.V.

    2015-01-01

    Full Text Available Integrated studies of photoelectric phenomena and their associated photodynamic processes in LiCaAlF6, LiLuF4, LiYF4, LiY0,5Lu0,5F4, SrAlF5 crystals doped with Ce3+ ions have been carried out using the combination of the methods of optical and dielectric spectroscopy. The numerical values of the basic parameters of photodynamic processes and their spectral dependence in 240 – 310 nm spectral range are evaluated. It has been shown that the most probable process, which leads to the photoionization of Ce3+ ions in LiYxLu1-xF4:Ce3+ (x=0; 0,5; 1 and LiCaAlF6:Ce3+ crystals, is excited-state absorption to the states of mixed configurations of Ce3+ ions localized near/in the conduction band of crystal.

  16. CE APPROVAL IN ELECTRICAL HOUSEHOLD APPLIANCES AND A CASE STUDY

    Directory of Open Access Journals (Sweden)

    Nazmi EKREN

    2009-01-01

    Full Text Available Due to the reason for rapidly developing technology, increasing competition medium, and awareness of the consumers, nowadays, the exigency of production with good quality has gained more and more significance. Certification of the quality and safety of the products to the consumers is compulsory in terms of producers. There are some documents to certify safety of the products. One of them is CE certificate. In this paper, basic information about CE mark is given and CE standards and tests required for electrical household appliances are mentioned. As an application, one of an electrical household appliance, toaster grill is treated and examined. To obtain CE certificate for toaster grill, required tests are made according to EN60335-2-9 and CE certificate is obtained.

  17. Thèses soutenues dans le domaine de l’image en France et en Espagne entre novembre 2009 et novembre 2010 Tesis defendidas sobre cine e imagen en España y Francia entre noviembre de 2009 y noviembre de 2010

    Directory of Open Access Journals (Sweden)

    Nancy Berthier

    2011-03-01

    Full Text Available Ce texte recense les travaux de recherches soutenus en France et en Espagne dans le domaine de l’image entre novembre 2009 et novembre 2010. Les résumés ont été fournis par les auteurs des travaux recensés.

  18. Fortalezas y debilidades del programa para la detección y el control del cáncer cervicouterino: Evaluación cualitativa en San Luis Potosí, México Strengths and weaknesses of a cervical cancer detection and control program: a qualitative evaluation in San Luis Potosi, Mexico

    Directory of Open Access Journals (Sweden)

    Luz María Tejada-Tayabas

    2012-08-01

    Full Text Available Objetivo: Identificar, desde la perspectiva del personal de salud, las fortalezas y debilidades del programa para la detección y el control del cáncer cervicouterino mediante una evaluación cualitativa, en tres centros de salud de San Luis Potosí, México, entre agosto de 2008 y noviembre de 2009. Métodos: Se realizó una evaluación cualitativa. En el estudio participaron nueve prestadores de servicios, seleccionados mediante muestreo por conveniencia, bajo el criterio de participación voluntaria. Inicialmente se obtuvo información de los centros de salud para conocer las características y el contexto en que opera el programa; posteriormente, a los nueve informantes se les realizaron 18 entrevistas semiestructuradas para indagar su perspectiva. Se empleó un análisis de contenido dirigido. Resultados: Las fortalezas referidas por el personal son el carácter gratuito del programa, la disponibilidad de recursos materiales, así como algunas estrategias que facilitan la captación de mujeres y su acceso al cribado. Las principales debilidades son las limitaciones de recursos humanos y en la estructura física, la ineficiente organización de actividades, la deficiente capacidad técnica del personal y las limitadas acciones de promoción, así como las dificultades en el seguimiento de las mujeres con resultados positivos. Conclusiones: Este estudio muestra la necesidad de incrementar los recursos humanos, realizar cambios en la normatividad y reorganizar las acciones del programa en algunos centros de salud, para garantizar la calidad del servicio y satisfacer los requerimientos de las mujeres, y así favorecer la cobertura en todas sus acciones.Objective: To identify, from the perspective of the health staff, the strengths and weaknesses of the program for the detection and control of cervical cancer through a qualitative assessment implemented in three health centers in the city of San Luis Potosi, Mexico, from August 2008 to November

  19. Comment fonctionne l’Univers ? Ce que le LHC peut nous apprendre

    CERN Multimedia

    CERN. Geneva

    2008-01-01

    L'Univers en son enfance était une "soupe" de particules, de plus en plus chaudes (de plus haute énergie) à mesure qu'on remonte vers sa naissance, le "big bang". C'est ainsi que les observations à des énergies de plus en plus élevées nous permettent, par exemple, de nous approcher de plus près de la prime jeunesse de l'Univers et, donc, de mieux le comprendre. L'étude du macro- et du micro-cosme sont une science unique dans laquelle, de façon surprenante, ce que nous comprenons le moins bien est le vide, qui ne semble pas l'être: il existe une différence fondamentale entre le vide et le néant. Le LHC pourrait nous permettre de voir les vibrations de la "substance" du vide, qu'on appelle les particules 'de Higgs'.

  20. De la ferme à la fourchette : liens entre productivité, nutrition et santé ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    20 sept. 2013 ... Ce projet met à l'essai une démarche qui va « de la ferme à la fourchette » et qui établit des liens entre l'agriculture, d'une part, et la santé et la nutrition, d'autre part, pour s'attaquer aux problèmes que pose la sécurité alimentaire au Guyana, à Trinité-et-Tobago, à Saint-Kitts-et-Nevis. et à Sainte-Lucie.

  1. Superconductivity and anomalous normal state in the CePd2Si2/CeNi2Ge2 system

    International Nuclear Information System (INIS)

    Grosche, F.M.; Lister, S.J.S.; Carter, F.V.; Saxena, S.S.; Haselwimmer, R.K.W.; Mathur, N.D.; Julian, S.R.; Lonzarich, G.G.

    1997-01-01

    The unconventional nonmagnetic metal CeNi 2 Ge 2 is characterised at ambient pressure by temperature dependences of the specific heat and of the resistivity which deviate strongly from standard Fermi-liquid predictions and are reminiscent of the behaviour observed in its sibling system CePd 2 Si 2 above the critical pressure at which magnetic order is suppressed. We have explored the CePd 2 Si 2 /CeNi 2 Ge 2 phase diagram in a series of resistivity measurements under high hydrostatic pressure, p. At p>15 kbar, a new superconducting transition appears below 220 mK in CeNi 2 Ge 2 and shifts to higher temperatures with increasing pressure, reaching ∝400 mK at p∝26 kbar. (orig.)

  2. Tetragonal zirconia ceramics in Zr O2-Ce O2 system (Ce-TZP): preparation, characterization and mechanical properties

    International Nuclear Information System (INIS)

    Andrade Nono, M.C. de.

    1992-01-01

    This paper describes and discusses the results achieved in a study about Ce-TZP ceramics prepared from conventional powder mixtures of Zr O 2 and Ce O 2 (with composition in the range of 8 to 16 mol% Ce O 2 ). Physical and chemical characteristics were related with the powder compaction behavior and with the sintering state. The sintered ceramics showed a level of high porosity (≅ 4%), mainly due to the fairly adequate powder characteristics and compaction. The crystalline phases were analysed from X-rays diffraction data and showed that these ceramics can present tetragonal-to-monoclinic stress induced transformation. The bending strength, fracture toughness and Vickers hardness results were influenced by Ce O 2 content microstructure and sintering temperature. These Ce-TZP ceramics showed mechanical strength results comparable to those published in the international literature. (author)

  3. Numerical simulation of the performance and economical study of three cookers: solar, hybrid (solar and natural gas) and a LPG (Liquefied Petroleum Gases) cooker for one typical year in Fortaleza-Brazil; Simulacao numerica da performance e estudo da viabilidade economica de tres tipos de fogoes: solar, hibrido (solar e gas natural) e a GLP (Gas Liquefeito do Petroleo) para um ano em Fortaleza

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Maria Eugenia Vieira da; Santana, Lana Ludmila Pinheiro [Universidade Federal do Ceara (UFC), Fortaleza, CE (Brazil). Lab. de Energia Solar e Gas Natural (LESGN); Schwarzer, Klemens [Universidade de Ciencias Aplicadas de Aachen (Germany). Solar Institute Juelich; Miller, Francisco Mateus [PETROBRAS, Rio de Janeiro, RJ (Brazil); Baratelli Junior, Fernando [PETROBRAS, Rio de Janeiro, RJ (Brazil). Gerencia de Gas e Energia

    2004-07-01

    Alternative energy sources can represent viable economical solutions for the energy supply problems and also minimize damages to the environment. This research paper presents an economical and technical study of three different types of cookers: a solar cooker, a hybrid cooker and a conventional LPG cooker, through simulation for one typical year in Fortaleza. The solar cooker used in the experiments is composed of two pots, an oven, a tank of storage and 2m{sup 2} of solar collector area. The hybrid cooker has the same structure of the solar one with an additional natural gas burner, and the LPG stove can be easily found in the market. To find the value of the necessary energy to make food in a solar cooker, the amount of solar radiation was measured, as well as the sensible and latent efficiencies of the used stove. In the hybrid, it was considered that the natural gas is used only in the periods of the day when the amount of solar energy is not enough to heat the system up to the desired temperature. The results show an economical and technical comparison of the three different types of cookers. (author)

  4. La formación actual del médico: fortalezas y debilidades The current training of doctors: strengths and weaknesses

    Directory of Open Access Journals (Sweden)

    X. Clèries

    2009-03-01

    Full Text Available Las “Jornadas estatales de estudio y debate sobre el futuro de la formación integral del médico ¿bioingeniería o medicina?” que se realizaron en Barcelona el 8 y 9 de febrero de 2008 fueron el marco para que un grupo de trabajo abordara el tema de las fortalezas y debilidades de la formación actual del médico. Las principales aportaciones se estructuraron en los tres niveles educativos siguientes: pregrado, posgrado y formación continuada. Se destacó la necesidad de una formación integral y psicosocial en la enseñanza de pregrado, la conveniencia de una estructuración troncal de la formación de posgrado para conseguir una mayor transversalidad de la competencia del médico y la contextualización de la formación continuada en el desarrollo profesional de cada médico. El predominio de los conocimientos biomédicos y tecnológicos en la formación actual del médico contrastan con las demandas de carácter psicosocial de una gran parte de la población en el sistema sanitario.The “National Conference for study and debate on the future of the integral training of doctors: bioengineering or medicine?” that were realized in Barcelona on February 8-9th, 2008 it was the context so that a work group was carried out on the topic about strengths and weaknesses of the current training of physicians. The main contributions were structured around three educational levels: undergraduate, postgraduate and continuing education. In the undergraduate level was emphasized the need to achieve an integral and psychosocial education. The postgraduate education should have a core subject in order to acquire a better global understanding of doctors' competences. Continuing medical education in the context of professional development of every physician. The predominance of the biomedical and technological knowledge in the current training of doctors contrasts with psychosocial demands of the population of healthcare system.

  5. Fermi surface study of CeSb

    International Nuclear Information System (INIS)

    Aoki, H.; Crabtree, G.W.; Joss, W.; Hulliger, F.

    1984-09-01

    A Fermi surface study of the ferromagnetic phase of CeSb is presented. The γ frequency branches arising from the electron surfaces at the X points, three separate frequency branches from the hole surfaces at the GAMMA point and the low frequency branch α have been observed. The effective mass ratios are low and range from approx. 0.2 for the α branch to approx. 1.0 for the high frequency branch of γ. The low effective mass ratios suggest that the admixture of the conduction states with the f state is small. We have observed a drastic change in the appearance of the dHvA signal at the phase transition between the ferromagnetic and lower field antiferromagnetic phases: The low frequency α oscillation suddenly disappears as the crystal enters the antiferromagnetic phase. By utilizing the change in the signal appearance, the transition field strength has been measured as a function of the field direction. The present experimental results, particularly the origin of the α oscillation, are discussed in the light of the p-f mixing theory and recent band structure calculations based on localized f orbitals

  6. Fermi surface study of CeSb

    International Nuclear Information System (INIS)

    Aoki, H.; Crabtree, G.; Joss, W.; Hulliger, F.

    1985-01-01

    A Fermi surface study of the ferromagnetic phase of CeSb is presented. The γ frequency branches arising from the electron surfaces at the X points, three separate frequency branches from the hole surfaces at the GAMMA point, and the low-frequency branch α have been observed. The effective mass ratios are low and range from approx.0.2 for the α branch to approx.1.0 for the high-frequency branch of γ. The low effective mass ratios suggest that the admixture of the conduction states with the f state is small. We have observed a drastic change in the appearance of the de Haas--van Alpen signal at the phase transition between the ferromagnetic and lower field antiferromagnetic phases: the low-frequency α oscillation suddenly disappears as the crystal enters the antiferromagnetic phase. By utilizing the change in the signal appearance, the transition field strength has been measured as a function of the field direction. The present experimental results particularly the origin of the α oscillation, are discussed in the light of the p-f mixing theory and recent band-structure calculations based on localized f orbitals

  7. Recent approaches in sensitive enantioseparations by CE.

    Science.gov (United States)

    Sánchez-Hernández, Laura; Castro-Puyana, María; Marina, María Luisa; Crego, Antonio L

    2012-01-01

    The latest strategies and instrumental improvements for enhancing the detection sensitivity in chiral analysis by CE are reviewed in this work. Following the previous reviews by García-Ruiz et al. (Electrophoresis 2006, 27, 195-212) and Sánchez-Hernández et al. (Electrophoresis 2008, 29, 237-251; Electrophoresis 2010, 31, 28-43), this review includes those papers that were published during the period from June 2009 to May 2011. These works describe the use of offline and online sample treatment techniques, online sample preconcentration techniques based on electrophoretic principles, and alternative detection systems to UV-Vis to increase the detection sensitivity. The application of the above-mentioned strategies, either alone or combined, to improve the sensitivity in the enantiomeric analysis of a broad range of samples, such as pharmaceutical, biological, food and environmental samples, enables to decrease the limits of detection up to 10⁻¹² M. The use of microchips to achieve sensitive chiral separations is also discussed. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  8. FATORES DE RISCO PARA CÂNCER CERVICAL E ADESÃO AO EXAME PAPANICOLAU ENTRE TRABALHADORAS DE ENFERMAGEM

    Directory of Open Access Journals (Sweden)

    Maria Albertina Rocha Diógenes

    2012-01-01

    Full Text Available El objetivo fue verificar la presencia de factores de riesgo para el cáncer de cuello uterino e identificar la adhesión a la prueba colpocitologica en asistentes y técnicas de enfermería de 20 servicios de atención primaria de salud, en Fortaleza, Brasil. Estudio descriptivo, realizado de octubre/2008 a enero/2009, con 77 mujeres. La colecta de los datos ocurrió a través de entrevista estructuradas, quedándose disponibles en tablas y tratadas con frecuencia absoluta y relativa. Se encontró que 71,43% de las mujeres utilizaron anticonceptivos orales, 19,48% fuman o han fumado, 61,04% tuvieron su primera relación sexual entre los 15 y 20 años, 77,92% no hacían uso sistemático de preservativos; 22,07% conocían la importancia de la detección y 84,40% lo hacía a cada año. La mayoría se adhiere a los exámenes ginecológicos regulares, aunque algunas tienen factores de riesgo para el cáncer de cuello uterino. Se señala la necesidad de intervención educativa dirigida a estas mujeres.

  9. Mechanochemical and combustion synthesis of CeB{sub 6}

    Energy Technology Data Exchange (ETDEWEB)

    Akguen, Baris [Roketsan Missiles Inc., Ankara (Turkey); Sevinc, Naci; Topkaya, Yavuz [Middle East Technical Univ., Ankara (Turkey). Dept. of Metallurgical and Materials Engineerung; Camurlu, H. Erdem [Akdeniz Univ., Antalya (Turkey). Dept. of Mechanical Engineering

    2013-04-15

    CeB{sub 6} powder was prepared via combustion synthesis (CS) and mechanochemical processing (MCP) methods starting from CeO{sub 2}, B{sub 2}O{sub 3} and Mg powder mixtures. In CS, reactant mixtures were ignited in a preheated pot furnace under argon atmosphere. Products contained CeB{sub 6}, MgO and Mg{sub 3}B{sub 2}O{sub 6}, as revealed by X-ray diffraction analysis. After leaching in 1 M HCl for 15h, MgO was removed but Mg{sub 3}B{sub 2}O{sub 6} could not be removed from the products. Ball milling of products in ethanol prior to leaching made the removal of Mg{sub 3}B{sub 2}O{sub 6} possible by leaching. Yield of CeB{sub 6} was 68.6% in CS. MCP was performed in a stainless steel vial with a planetary ball mill at 300 rpm for 30h. MCP products contained CeB{sub 6}, MgO and small amount of Fe. Leaching in 1 M HCl for 30min was sufficient to remove MgO. Yield of CeB{sub 6} was 84.4% in MCP. According to scanning electron microscopy examinations, particles of CeB6 prepared by CS and MCP had submicrometer size. Average particle sizes were determined as 290nm and 240nm, respectively.

  10. The formation of intermetallic compounds during interdiffusion of Mg–Al/Mg–Ce diffusion couples

    International Nuclear Information System (INIS)

    Dai, Jiahong; Jiang, Bin; Li, Xin; Yang, Qingshan; Dong, Hanwu; Xia, Xiangsheng; Pan, Fusheng

    2015-01-01

    Graphical abstract: Al–Ce intermetallic compounds (IMCs) formed in Mg–Al/Mg–Ce diffusion couples. During the whole diffusion process, Al was the dominant diffusing species, and it substituted for Mg atoms of the Mg–Ce substrate. Five Al–Ce IMCs of Al 4 Ce, Al 11 Ce 3 , Al 3 Ce, Al 2 Ce, and AlCe were formed via the reaction of Al and Ce. - Highlights: • Al–Ce IMCs formation in the Mg–Al/Mg–Ce diffusion couples was studied. • Formation of Al 4 Ce as the first phase was rationalized using the Gibbs free energy. • The activation energy for the growth of the diffusion reaction zones was 36.6 kJ/mol. - Abstract: The formation of Al–Ce intermetallic compounds (IMCs) during interdiffusion of Mg–Al/Mg–Ce diffusion couples prepared by solid–liquid contact method was investigated at 623 K, 648 K and 673 K for 24 h, 48 h and 72 h, respectively. During the whole diffusion process, Al was the dominant diffusing species, and it substituted for Mg of the Mg–Ce substrate. Five Al–Ce IMCs of Al 4 Ce, Al 11 Ce 3 , Al 3 Ce, Al 2 Ce and AlCe were formed via the reaction of Al and Ce. The formation of Al 4 Ce as the first kind of IMC was rationalized on the basis of an effective Gibbs free energy model. The activation energy for the growth of the total diffusion reaction layer was 36.6 kJ/mol

  11. Properties and practical application of thin CeOx films

    Directory of Open Access Journals (Sweden)

    Maksimchuk N. V.

    2010-10-01

    Full Text Available The properties of CeOx films produced by various methods have been investigated. According to the comparative analisys “metallic mirror oxidation” method allows to produce films with significantly better characteristics than the «explosive evaporation» method. Though the latter method yields higher photosensitivity of CeOx films and structures on their base. In the process the optimal value of the substrate temperature was determined. Obtained data expand the CeOx application potential in microelectronic sensor sphere.

  12. Capacitação profissional para o enfrentamento às violências sexuais contra crianças e adolescentes em Fortaleza, Ceará, Brasil

    Directory of Open Access Journals (Sweden)

    Suely Deslandes

    2015-02-01

    Full Text Available Pretendeu-se identificar as iniciativas de capacitação aos profissionais da rede pública municipal de Fortaleza, Ceará, Brasil, para o enfrentamento de violências sexuais contra crianças e adolescentes. Esse estudo exploratório tomou como referência as capacitações ofertadas no biênio 2010-2012 pelo governo municipal para os gestores e profissionais que atuam na rede pública de Fortaleza. Constatou-se a baixa inserção da temática das violências sexuais nas capacitações ofertadas apesar do reconhecimento quanto à sua importância. Os programas federais e estaduais foram indutores das capacitações nas diferentes secretarias municipais. Considerouse estratégico o investimento do setor saúde na capacitação de profissionais da atenção básica. Em relação aos profissionais da assistência social, a insuficiência de capacitação é agravada pelas contratações temporárias e pela alta rotatividade. Sugere-se a construção de um plano de capacitação sobre violências e, em especial, sobre violência sexual.

  13. Biological reduction-deposition and luminescent properties of nanostructured CePO{sub 4}@NaCe(SO{sub 4}){sub 2}(H{sub 2}O) and CePO{sub 4}

    Energy Technology Data Exchange (ETDEWEB)

    Yu, Xiaoniu [School of Materials Science and Engineering, Southeast University, Nanjing 211189 (China); Research Institute of Green Construction Materials, Southeast University, Nanjing 211189 (China); Qian, Chunxiang, E-mail: cxqian@seu.edu.cn [School of Materials Science and Engineering, Southeast University, Nanjing 211189 (China); Research Institute of Green Construction Materials, Southeast University, Nanjing 211189 (China)

    2016-03-01

    Nano-sized CePO{sub 4}@NaCe(SO{sub 4}){sub 2}(H{sub 2}O) and CePO{sub 4} with hexagonal phase have been prepared by simply varying the reactant P/Ce molar ratio in bacterial liquid. The phase composition of two samples was checked via Fourier transform infrared spectroscopy (FTIR), energy dispersive analysis of X-rays (EDS) and X-ray diffraction (XRD) analyses, displaying the presence of CePO{sub 4}@NaCe(SO{sub 4}){sub 2}(H{sub 2}O) and CePO{sub 4} with average crystallite size are 32.34 and 15.61 nm, respectively. The scanning electron microscopy (SEM) images show that nano-clusters and sphere-like in shape with a narrow diameter distribution were observed in two samples. The transmission electron microscopy (TEM) photographs further indicate obtained CePO{sub 4}@NaCe(SO{sub 4}){sub 2}(H{sub 2}O) and CePO{sub 4} nanoparticles correspond to nanosheets and nanorods, respectively. The emission spectra of CePO{sub 4}@NaCe(SO{sub 4}){sub 2}(H{sub 2}O) and CePO{sub 4} display a broad band of 300–380 nm range with the strongest emission at 342 nm in the violet region. - Highlights: • A new method was found to synthesize CePO{sub 4}@NaCe(SO{sub 4}){sub 2}(H{sub 2}O) and CePO{sub 4} nanoparticles. • CePO{sub 4}@NaCe(SO{sub 4}){sub 2}(H{sub 2}O) nanoparticles have good luminescent properties. • Size and luminescent properties of two samples have been studied and compared.

  14. HumanViCe: Host ceRNA network in virus infected cells in human

    Directory of Open Access Journals (Sweden)

    Suman eGhosal

    2014-07-01

    Full Text Available Host-virus interaction via host cellular components has been an important field of research in recent times. RNA interference mediated by short interfering RNAs and microRNAs (miRNA, is a widespread anti-viral defence strategy. Importantly, viruses also encode their own miRNAs. In recent times miRNAs were identified as key players in host-virus interaction. Furthermore, viruses were shown to exploit the host miRNA networks to suite their own need. The complex cross-talk between host and viral miRNAs and their cellular and viral targets forms the environment for viral pathogenesis. Apart from protein-coding mRNAs, non-coding RNAs may also be targeted by host or viral miRNAs in virus infected cells, and viruses can exploit the host miRNA mediated gene regulatory network via the competing endogenous RNA effect. A recent report showed that viral U-rich non-coding RNAs called HSUR, expressed in primate virus herpesvirus saimiri (HVS infected T cells, were able to bind to three host miRNAs, causing significant alteration in cellular level for one of the miRNAs. We have predicted protein coding and non protein-coding targets for viral and human miRNAs in virus infected cells. We identified viral miRNA targets within host non-coding RNA loci from AGO interacting regions in three different virus infected cells. Gene ontology (GO and pathway enrichment analysis of the genes comprising the ceRNA networks in the virus infected cells revealed enrichment of key cellular signalling pathways related to cell fate decisions and gene transcription, like Notch and Wnt signalling pathways, as well as pathways related to viral entry, replication and virulence. We identified a vast number of non-coding transcripts playing as potential ceRNAs to the immune response associated genes; e.g. APOBEC family genes, in some virus infected cells. All these information are compiled in HumanViCe, a comprehensive database that provides the potential ceRNA networks in virus

  15. Opinion: Parvenir à une réelle égalité entre les sexes en ce qui ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    14 nov. 2016 ... L'augmentation des conflits et de la fragilité politique dans plusieurs régions du monde ont exacerbé et enraciné les disparités relatives à la santé des jeunes, particulièrement pour les adolescentes qui font régulièrement face à des obstacles et à une réduction de l'accès aux soins de santé. Lisez l'article ...

  16. Influence of Ce(III/Ce(IV - supplements on the Characteristics of Humidity Sensors with TiO2 Films Prepared via a Sol-gel Method

    Directory of Open Access Journals (Sweden)

    Kozhukharov, S.

    2013-04-01

    Full Text Available Humidity sensors have been prepared via a sol-gel method to deposit TiO2 films with additions of Ce-compounds on alumina substrates, with interdigitated silver palladium electrodes. Observations by scanning electron microscopy (SEM were performed in order to determine the surface morphology of the respective layers. Structural and compositional characterization was done by X-ray diffraction analysis (XRD, and energy dispersive X-ray spectroscopy (EDX for investigation of the relation between the film structures and the parameters of the respective sensors. The influence of Ce-compounds on the electrical characteristics of the samples as humidity sensing elements has been evaluated by an impedance analyzer.Los sensores de humedad han sido desarrollados mediante el método sol-gel para depositar películas superficiales basadas en TiO2 con adiciones de compuestos de cerio sobre sustratos de corindón y electrodos de aleación de plata y paladio. Se han realizado observaciones mediante el Microscopio Electrónico de Barrido (MEB para determinar la morfología superficial de las capas respectivas. Las caracterizaciones de la estructura y composición han sido realizadas mediante Difracción de Rayos X (DRX y espectroscopía de dispersión energética de rayos X (EDERX, con el fin de investigar la relación entre la estructura de las capas y los parámetros de los sensores respectivos. La influencia de los compuestos de cerio sobre las características eléctricas de los sensores de humedad obtenidos se ha evaluado mediante el análisis de impedancia eléctrica.

  17. Relações entre violência escolar, gênero e estresse em pré-adolescentes

    Directory of Open Access Journals (Sweden)

    Marília Mendes Moreira de Sousa

    2016-05-01

    Full Text Available School violence is a national problem characterized by behaviors that intend to cause harm and involve aggressive acts between students or employees and students. The goal of this study was to investigate whether there is any relation between those stressful behaviors and the types of involvement in school violence, as well as the relation between stress, school violence, and gender. Participants were 109 students, aged 9 to 14 years, of a public school located in a low human development index area in the city of Fortaleza, Brazil. These participants expressed consent and their parents authorized their participation by signing an Informed Consent Form. The students responded to the School Violence Scale and the Infant Stress Scale. Psychological, physical and material violence was observed through the analysis of the following categories: victimization of students by students, victimization of students by employees, and authorship of violence. Nevertheless, most of the students surveyed were not under considerable state of stress. The results showed significant positive correlations between stress and victimization of students by students; stress and suffering from psychological violence by employees; and stress and being perpetrator of psychological, physical, or virtual violence, as well between stress and risky behaviors. It was also found that, compared with boys, girls are more often victimized with respect to psychological violence by students, practice psychological and virtual violence more often, and suffer more stress A violência escolar é um problema nacional e se caracteriza por comportamentos que visam causar danos e que envolvem atos agressivos entre alunos, de alunos a funcionários e de funcionários a alunos. O objetivo deste estudo compreende investigar se há relação entre comportamentos de estresse e tipos de envolvimento em violência escolar, bem como a relação entre estresse, violência escolar e g

  18. Entre palabra, escritura e imagen

    Directory of Open Access Journals (Sweden)

    José Sánchez Parga

    2015-01-01

    Full Text Available Plantea el autor que, hace quinientos años, cuando se produjo el encuentro entre la cultura europea y las americanas junto con la conquista y la dominación colonial se instauró un régimen de comunicación en el que se reprodujo una situación de incomunicación y transcomunicaciones hasta ahora existentes. Se refiere el autor también a la violencia verbal y la ley del silencio, a lo que se entiende por mundo andino, a la comunicación como intercambio, la tradición oral-galaxia radial, la dominación gráfica, la Biblia-Gramática- leyes de Indias, Otavalo, quema de papeles, Guamán Poma, el imperialismo de la imagen, destrucción de ídolos, imagen cristiana colonizadora, imperialismo de la imagen, resistencia cultural, importancia de la virgen y el neocolonialismo electrónico.

  19. Incompatibilidade física de misturas entre herbicidas e inseticidas Physical incompatibility of herbicide and insecticide mixtures

    Directory of Open Access Journals (Sweden)

    F.A. Petter

    2012-06-01

    Full Text Available Objetivou-se, com este trabalho, avaliar a interação física entre misturas em tanque de diferentes classes de defensivos agrícolas. O experimento foi conduzido no laboratório de Química da Universidade do Estado de Mato Grosso, no período de junho a agosto de 2010. Os tratamentos foram constituídos pelas misturas de seis herbicidas (glyphosate SC, glyphosate WG, lactofen CE, fomesafen SC, haloxifop-R CE e fluazifop-pbutil EW com seis inseticidas (methomyl CS, clorpirifós CE, teflubenzuron SC, triflumuron SC, cipermetrina CE e tiametoxam + lambda-cialotrina SC na ausência e presença de dois redutores de pH (ácido pirolenhoso e ácido bórico, com quatro repetições. Utilizou-se escala de 1 a 5, visando avaliar o grau de incompatibilidade, em que 1 é a separação imediata da mistura e recomenda-se não aplicar e 5 é a homogeneidade das misturas. As maiores incompatibilidades físicas nas misturas de herbicidas e inseticidas foram observadas na presença dos herbicidas glyphosate na formulação WG e lactofen CE. O ácido pirolenhoso e o ácido bórico demonstraram ser boas alternativas, como redutores de pH, no preparo de calda de pulverização com misturas de herbicidas e inseticidas. Devem-se evitar misturas em tanque de glyphosate na formulação SC + clorpirifós CE e lactofen CE + clorpirifós CE.The objective ofthis study was to evaluate the physical interaction between simulated tank mixtures of different classes of pesticides. The experiment was conducted at the Chemistry Laboratory of the University of Mato Grosso, Brazil, from June to August 2010. The treatments consisted of mixtures of six herbicides (glyphosate SC, glyphosate WG, lactofen CE, fomesafen SC, haloxifop-R CE, and fluazifop-p-butyl EW with six types of insecticide (methomyl CS, clorpirifos CE, teflubenzuron SC, triflumuron SC, cipermetrin CE, and tiametoxam + lambda-cialotrin SC in the absence and presence oftwo pH reducers (pyroligneous acid and boric acid

  20. Performance evaluation of LaBr3: Ce scintillator

    International Nuclear Information System (INIS)

    Xie Ming; Lin Li; Liu Shihao; Xiao Peng; Xie Qingguo

    2012-01-01

    The cerium doped lanthanum bromide crystal (LaBr 3 : Ce) is a new kind of scintillator with many advantages such as good energy resolution, high light output, short decay time, good proportionality response. These properties make the LaBr 3 : Ce attractive substantial interest to use in the radiation detection. The energy resolution were investigated with Φ25 × 25 mm LaBr 3 : Ce coupled to a Hamamatsu R8900 photomultiplier tube. Energy resolution of 3.6% (FWHM) have been achieved for 511 keV photons ( 18 F source) at room temperature. Decay time constant of 20 ns have been acquired with a Hamamatsu fast-time-response R9800 photomultiplier tube. The results approve the excellent characterizations of LaBr 3 : Ce and imply its enormous potentiality in the radiation detectors of gamma-ray spectroscopy and PET. (authors)

  1. NMR study of CeCoSi3

    International Nuclear Information System (INIS)

    Iwamoto, Y.

    1995-01-01

    Low-temperature susceptibility, NMR and NQR of the 59 Co signal in CeCoSi 3 have been measured. CeCoSi 3 showed a superconducting transition at 0.7-1.2K. From NQR measurement, the nuclear quadrupole frequency and the full width at half maximum (FWHM) of 59 Co in CeCoSi 3 were estimated to be about 1.08MHz and 0.08MHz, respectively. The 59 Co nuclear spin-lattice relaxation rate (1/T 1 ) in CeCoSi 3 was proportional to the temperature (T) as the Fermi liquid state above the superconducting transition temperature (T c ), and then rapidly decreased below T c . ((orig.))

  2. CE-MS fingerprinting of Laurencia complex algae (Rhodophyta).

    Science.gov (United States)

    Machín-Sánchez, María; Asensio-Ramos, María; Hernández-Borges, Javier; Gil-Rodríguez, María Candelaria

    2014-03-01

    The use of CE-ESI-MS has been considered as a new chemical strategy for the possible discernment of genera and species of the Laurencia complex. After the selection of the CE-MS and the extraction conditions, a total of 28 specimens of the complex, including different species of four genera (Laurencia, Laurenciella, Palisada, and Osmundea) collected from five intertidal locations on the Island of Tenerife (Canary Islands, Spain) were analyzed. CE-MS fingerprints revealed that CE-MS can be used as a useful tool for these studies in order to assess similarities and differences between them and that it constitutes an important starting point for further studies in the field. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  3. Sr2CeO4: Electronic and structural properties

    International Nuclear Information System (INIS)

    Rocha, Leonardo A.; Schiavon, Marco A.; Nascimento, Clebio S.; Guimarães, Luciana; Góes, Márcio S.; Pires, Ana M.; Paiva-Santos, Carlos O.

    2014-01-01

    Highlights: • Sr 2 CeO 4 it was obtained from the heat treatment of Ce 3+ -doped strontium oxalate. • Rietveld analysis made it possible to obtain information about crystalline structure. • Experimental band gap value was compared with theoretical obtained by Sparkle/PM7. • The materials obtained shows intense photoluminescence and scintillator properties. - Abstract: This work presents on the preparation and photoluminescent properties of Sr 2 CeO 4 obtained from the heat treatment of Ce(III)-doped strontium oxalate (10, 25 and 33 mol%). The oxalate precursors were heat treated at 1100 °C for 12 h. The structure of this photoluminescent material was evaluated by the Rietveld method. The route used in this work to prepare the materials showed to be viable when compared to other synthesis reported in the literature. The Sr 2 CeO 4 material showed a broad and intense band emission with a maximum around 485 nm. The quantitative phase analysis showed that the Sr 2 CeO 4 photoluminescent phase is the majority one compared to the impurity phases of SrCeO 3 and SrCO 3 . From all results it was possible to verify a complete elimination of the CeO 2 phase for the sample obtained from the heat treatment of oxalate precursor containing 33 mol% of cerium(III). The material showed excellent properties for possible candidate as scintillator materials, and in the improvement of efficiency of solar cells when excited in the UV–vis region. The CIE chromaticity diagram it is also reported in this work

  4. Quadrupole moment of the superdeformed band in 131Ce

    International Nuclear Information System (INIS)

    He, Y.; Godfrey, M.J.; Jenkins, I.; Kirwan, A.J.; Nolan, P.J.

    1990-01-01

    A mean lifetime measurement has been carried out on the states in the superdeformed band found in 131 Ce using the Doppler shift attenuation method (DSAM). The measured intrinsic nuclear quadrupole moment is Q o approx= 6 eb, assuming constant deformation, which corresponds to a quadrupole deformation β 2 approx= 0.35. This is considerably smaller than the value deduced for 132 Ce. (author)

  5. Optical properties of CeO 2 thin films

    Indian Academy of Sciences (India)

    Cerium oxide (CeO2) thin films have been prepared by electron beam evaporation technique onto glass substrate at a pressure of about 6 × 10-6 Torr. The thickness of CeO2 films ranges from 140–180 nm. The optical properties of cerium oxide films are studied in the wavelength range of 200–850 nm. The film is highly ...

  6. ETUDE PAR DFT+U DE L’INTERACTION Ni-CeO2

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    Z CHAFI

    2010-12-01

    Full Text Available L’étude de l’interaction Ni-CeO2 a été entreprise en utilisant une méthode ab initio basée sur la DFT+U. Dans une première étape, les valeurs du paramètre d’Hubbard, Ueff, ont été déterminées après ajustement du paramètre de maille et de l’énergie de gap du volume de l’oxyde de cérium. Elles sont respectivement de 3 et 5 eV pour les approximations GGA et LDA. Nous avons ensuite étudié d’une part la possibilité d’insérer le nickel atomique dans le volume de CeO2. D’autre part, nous avons testé les effets de l’insertion et l’adsorption de Ni dans les surfaces les plus stables (111 et (110 de CeO2. Les résultats des calculs DFT+U sont en bon accord avec ceux que nous avons précédemment trouvé en utilisant un calcul DFT concernant les sites favorables de l’atome de nickel et le nombre de liaisons. Toutefois, l’approximation LDA+5 eV, a permis d’obtenir des énergies plus favorables ainsi que des distances comparables à celles observées expérimentalement à l’interface métal/oxyde dans les catalyseurs Ni/CeO2 synthétisés sous irradiation. Une expansion du volume est observée lors de l’insertion du nickel dans le volume de l’oxyde de cérium. Concernant l’adsorption sur les surfaces, la meilleure énergie est trouvée dans le cas où l’atome de nickel est situé en position bridge entre deux atomes d’oxygène sur la surface (110. Finalement, les calculs montrent que le nickel s’insère plus facilement dans la surface (110 avec une meilleure énergie d’insertion, obtenue par l’approximation LDA+5 eV, de 4,071 eV.

  7. Sopro de vida: experiência com a doença pulmonar obstrutiva crônica na pobreza urbana de Fortaleza, Ceará, Brasil Breath of life: experience with chronic obstructive pulmonary disease in the context of urban poverty in Fortaleza, Ceará State, Brazil

    Directory of Open Access Journals (Sweden)

    Juliana Maria de Sousa Pinto

    2008-12-01

    Full Text Available Trata-se de estudo antropológico de pessoas com a doença pulmonar obstrutiva crônica vivenciada na pobreza urbana de Fortaleza, Ceará, Brasil. De março a novembro de 2006, conduzimos com seis pacientes o estudo de casos, a entrevista etnográfica, a narrativa da enfermidade, e a observação participante no atendimento hospitalar e visitas domiciliares. Utilizamos a análise de conteúdo temática e a interpretação semântica contextualizada para interligar a experiência individual aos sistemas de significação, ações tomadas e condicionantes estruturais. Conclui-se que a doença pulmonar obstrutiva crônica provoca sensações, sinais e significados subjetivos. O diagnóstico torna a vida "um sufoco", surgindo limitações e privações de atividades laborais, sexuais, domésticas, familiares e de lazer. Evitar o contato direto com "o catarro" do doente, deixar de fumar ou diminuir a freqüência e evitar fumaça, tratar os sintomas com remédios caseiros e terapias corporais populares, manter a calma durante as crises, rejeitar restrições categóricas e impostas e entregar-se às forças espirituais são estratégias leigas para enfrentar o cansaço, a crise e a baixa auto-estima. A subjetividade da enfermidade, portanto, jamais pode ser excluída na medição da "carga global da doença" no nordeste brasileiro.This is an anthropological study on the experience of living with chronic obstructive pulmonary disease (COPD for low-income individuals in the city of Fortaleza, Ceará State, Brazil. From March to November 2006, we conducted case studies of six patients, using ethnographic interviews, illness narratives, and participant-observation during hospital treatment and home visits. Thematic context analysis and contextualized semantic analysis were used to link individual experience to system of significance, actions taken, and structural constraints. Based on the findings, COPD provokes subjective sensations, signs, and meanings

  8. Análise de custos com pessoal e produtividade de equipes do programa de saúde da família em Fortaleza, Ceará Costs with personnel and productivity analysis of family health program teams in Fortaleza, Ceará

    Directory of Open Access Journals (Sweden)

    Fernando dos Santos Rocha Filho

    2009-06-01

    Full Text Available Foram verificados a produtividade e os custos com pessoal das atividades de oito equipes de duas unidades do PSF de Fortaleza, Ceará, através da metodologia de custeio por absorção, em 2004. Os maiores gastos foram com pessoal (75%, principalmente com os membros das equipes do PSF, e com medicamentos (18%. As verbas federais repassadas, em setembro de 2004, por equipe do PSF, foram de R$ 9.543,33. O custo global da atuação da equipe foi de R$ 15.719,00. Alguns profissionais de várias equipes do PSF apresentaram produtividade acima das metas planejadas, porém a média geral das atividades por médico e enfermeiro nas equipes ficou abaixo da metade daquelas metas, com alta capacidade ociosa e tornando as atividades muito onerosas. Verificou-se o custo unitário da visita domiciliar por médico e da consulta de pré-natal por enfermeiro, que seriam menos onerosos se a capacidade ociosa fosse menor. Ha várias alternativas de minimização de custos, incluindo economia de escala relativa a alguns recursos e serviços e renegociação de contratos com empresas e cooperativas. As informações possibilitam o planejamento mais preciso, para manutenção e instalação de equipes, além de alternativas de menores custos com maior produtividade e qualidade.The research verified the productivity and the operational personnel costs of eight teams of the Family Health Program (PSF of two Basic Units of Family Health (UBASF in Fortaleza, Ceará, through the methodology of costs by absortion, in 2004. The largest expenses were with personnel (75%, mainly with the PSF teams, and medicines (18%. The federal allocations received in September, 2004, by each PSF team, were R$ 9,543.33. The total cost by team was R$ 15,719.00. Some professionals of various PSF teams showed productivity above the set objectives, but the average productivity by doctor and nurse was below fifty per cent of objectives, with high idle time making the work onerous. The unity cost

  9. Risco de transmissão do vírus da raiva oriundo de sagui (Callithrix jacchus, domiciliado e semidomiciliado, para o homem na região metropolitana de Fortaleza, estado do Ceará Risks of transmitting rabies virus from captive domiciliary common marmoset (Callithrix jacchus to human beings, in the metropolitan region of Fortaleza, state of Ceará, Brazil

    Directory of Open Access Journals (Sweden)

    Tereza D'ávila de Freitas Aguiar

    2011-06-01

    Full Text Available INTRODUÇÃO: Uma variante do vírus da raivafoi identificadaem associação a casos de raiva humanos, no Estado do Ceará, transmitidos por saguis (Callithrix jacchus, primatas frequentemente criados como animais de estimação. Essa variante não apresenta proximidade antigênica ou relação genética com as variantes do vírus encontradas em morcegos e mamíferos terrestres das Américas. O objetivo do estudo foi avaliar os fatores de risco de transmissão do vírus da raiva oriundo de sagui (C. jacchus, criado como animal de estimação, para o homem na região metropolitana de Fortaleza, Ceará. MÉTODOS: Foi aplicado um questionário estruturado aos criadores de saguis, residentes nos municípios de Aquiraz e Maranguape, Ceará, enfocando o manejo e a interação desses primatas com humanos. Para avaliação da ocorrência de antígenos rábicos, através do teste de imunofluorescência direta (IFD, foram coletadas amostras de saliva dos saguis domiciliados e semidomiciliados. Com base nos resultados obtidos desses espécimes, foram analisadas amostras de sistema nervoso central (SNC. RESULTADOS: Na análise dos questionários, observou-se a proximidade dos criadores de saguis durante o manejo desses animais nos domicílios, bem como, seus conhecimentos limitados sobre a raiva, demonstrando haver risco quanto à transmissão do vírus. De 29 amostras de saliva de saguis reavaliadas, uma (3,4% apresentou reação de IFD positiva. De 11 amostras de SNC, três (27,3% apresentaram positividade. CONCLUSÕES: Os dados laboratoriais estão de acordo com os achados dos questionários, confirmando haver risco da transmissão do vírus da raiva devido à convivência de humanos com saguis (C. jacchus.INTRODUCTION: In the State of Ceará, a new variant of the rabies virus was identified associated with cases of human rabies transmitted by common marmosets (Callithrix jacchus, which are frequently kept as pets. This new variant does not present

  10. Formação em psicologia e a apropriação do enfoque da atenção primária à saúde em Fortaleza, Ceará Training in psychology and the appropriation of the focus on primary health care in Fortaleza, Ceará

    Directory of Open Access Journals (Sweden)

    Lidiany Alexandre Azevedo

    2011-10-01

    Full Text Available As mudanças econômicas e sociais ocorridas no Brasil na década de 1980 e a garantia de políticas públicas pela 'Constituição Cidadã' ocasionam o início de uma transformação no campo psi: a inviabilidade do modelo de profissional autônomo e a abertura de novos campos de atuação. Dentre estes, a Saúde Coletiva, em seus três níveis de atenção, é a que mais tem possibilitado essas novas formas de inserção. No entanto, o processo de interlocução dos psicólogos com esse campo do saber vem sendo problemático e remete a uma formação que ainda não tem fornecido a preparação necessária para a atuação em consonância com o Sistema Único de Saúde (SUS. Este trabalho teve como objetivo analisar a proposta de formação, para a atuação na atenção primária, prevista pelos cursos de graduação em psicologia de Fortaleza, Ceará, por meio dos seus projetos político-pedagógicos. Para isso usou-se uma abordagem qualitativa, tendo como estratégia metodológica a análise documental. Constatou-se que a formação do psicólogo, apesar das novas diretrizes curriculares, ainda é pautada por uma proposta clínica tradicional, com ensino centrado no modelo intervencionista de saúde. Conclui-se apontando a necessidade de mudanças que ampliem e requalifiquem a formação em psicologia para atuação em Atenção Primária à Saúde.The socioeconomic changes that took place in Brazil in the 1980s and the guarantee of public policies by the 'citizen constitution' sparked a transformation in the psi field: the impracticability of the self-employed worker model and the opening of new fields of performance. Among these, Public Health, on its three levels of care, is what has enabled these new forms of integration the most. However, the psychologists' process of dialogue with this field of knowledge has been problematic, a fact that has lead to a type of training that has not provided the necessary readiness for them to work in

  11. Crystal growth and magnetic properties of equiatomic CeAl

    Science.gov (United States)

    Das, Pranab Kumar; Thamizhavel, A.

    2015-03-01

    Single crystal of CeAl has been grown by flux method using Ce-Al self-flux. Several needle like single crystals were obtained and the length of the needle corresponds to the [001] crystallographic direction. Powder x-ray diffraction revealed that CeAl crystallizes in orthorhombic CrB-type structure with space group Cmcm (no. 63). The magnetic properties have been investigated by means of magnetic susceptibility, isothermal magnetization, electrical transport, and heat capacity measurements. CeAl is found to order antiferromagnetically with a Neel temperature TN = 10 K. The magnetization data below the ordering temperature reveals two metamagentic transitions for fields less than 20 kOe. From the inverse magnetic susceptibility an effective moment of 2.66 μB/Ce has been estimated, which indicates that Ce is in its trivalent state. Electrical resistivity data clearly shows a sharp drop at 10 K due to the reduction of spin disorder scattering of conduction electrons thus confirming the magnetic ordering. The estimated residual resistivity ratio (RRR) is 33, thus indicating a good quality of the single crystal. The bulk nature of the magnetic ordering is also confirmed by heat capacity data. From the Schottky anomaly of the heat capacity we have estimated the crystal field level splitting energies of the (2J + 1) degenerate ground state as 25 K and 175 K respectively for the fist and second excited states.

  12. CE-SAM: a conversational interface for ISR mission support

    Science.gov (United States)

    Pizzocaro, Diego; Parizas, Christos; Preece, Alun; Braines, Dave; Mott, David; Bakdash, Jonathan Z.

    2013-05-01

    There is considerable interest in natural language conversational interfaces. These allow for complex user interactions with systems, such as fulfilling information requirements in dynamic environments, without requiring extensive training or a technical background (e.g. in formal query languages or schemas). To leverage the advantages of conversational interactions we propose CE-SAM (Controlled English Sensor Assignment to Missions), a system that guides users through refining and satisfying their information needs in the context of Intelligence, Surveillance, and Reconnaissance (ISR) operations. The rapidly-increasing availability of sensing assets and other information sources poses substantial challenges to effective ISR resource management. In a coalition context, the problem is even more complex, because assets may be "owned" by different partners. We show how CE-SAM allows a user to refine and relate their ISR information needs to pre-existing concepts in an ISR knowledge base, via conversational interaction implemented on a tablet device. The knowledge base is represented using Controlled English (CE) - a form of controlled natural language that is both human-readable and machine processable (i.e. can be used to implement automated reasoning). Users interact with the CE-SAM conversational interface using natural language, which the system converts to CE for feeding-back to the user for confirmation (e.g. to reduce misunderstanding). We show that this process not only allows users to access the assets that can support their mission needs, but also assists them in extending the CE knowledge base with new concepts.

  13. Entre contener y ser contenido

    Directory of Open Access Journals (Sweden)

    Jorge Morales Meneses

    2016-08-01

    Full Text Available El presente artículo propone una nueva manera de entender los elementos comunes en la formación y el hacer del diseño y de la arquitectura, posibilitando un pensar común y un coactuar en diversas escalas de intervención, necesarias para el manejo de la complejidad del paisaje contemporáneo. La convicción de un pensar común entre ambas disciplinas permite explorar un marco filosófico que incluye a pensadores tan trascendentales como Aristóteles, Kant y Heidegger, estableciendo un orden de pensamiento que los relaciona y sitúa. En momentos en que el territorio está siendo visible y negativamente afectado por elementos no pensados o que fueron imaginados separadamente, este artículo propone una mirada que le dé sentido de totalidad a las acciones del diseño y de la arquitectura, como elementos que permanentemente se contienen en otros de diferente escala, pero que siempre están vinculados. Reconocer el paisaje físico y mental, tangible e intangible que contiene al diseño y a la arquitectura contribuirá a establecer un marco de acción donde todos los elementos construidos por el ser humano puedan tener un rol específico y una escala asumida, e intercomprenderse para mejor utilización de los recursos, disminuir el impacto ambiental y contribuir a un orden social mejor interpretado por los objetos, espacios y sus representaciones.

  14. ANALOGIES ENTRE LA THÉORIE STOCHASTIQUE ET LA THÉORIE QUANTIQUE

    Directory of Open Access Journals (Sweden)

    I BENDAHMANE

    2011-12-01

    Full Text Available Des analogies ont été faites entre la théorie quantique et la théorie stochastique qui décrivent des modèles d’évolution complètement différents dans des statuts mathématiques semblables ; Les processus stochastiques markoviens permettent une description acceptable des problèmes de la physique quantique. L’équation quantique de Schrödinger et l’équation stochastique de Chapman-Kolmogorov ont la même forme différentielle et peuvent par conséquent partager les mêmes solutions. Un lien profond existe entre l’intégrale de chemin de Feynman et l’intégrale de chemin stochastique de Wiener. Néanmoins, l’expression du propagateur de Wiener est mieux définie ; la constante de proportionnalité imposée par Feynman en raison de la normalisation a été naturellement déduite dans l’intégrale de chemin de Wiener. Ce résultat constitue la contribution originale de ce travail.

  15. Cerocene Revisited: The Electronic Structure of and Interconversion Between Ce2(C8H8)3 and Ce(C8H8)2

    Energy Technology Data Exchange (ETDEWEB)

    Walter, Marc D.; Booth, Corwin H.; Lukens, Wayne W.; Andersen, Richard A.

    2009-02-02

    New synthetic procedures for the preparation of Ce(cot)2, cerocene, from [Li(thf)4][Ce(cot)2], and Ce2(cot)3 in high yield and purity are reported. Heating solid Ce(cot)2 yields Ce2(cot)3 and COT while heating Ce2(cot)3 with an excess of COT in C6D6 to 65oC over four months yields Ce(cot)2. The solid state magnetic susceptibility of these three organocerium compounds shows that Ce(cot)2 behaves as a TIP (temperature independent paramagnet) over the temperature range of 5-300 K, while that of Ce2(cot)3 shows that the spin carriers are antiferromagnetically coupled below 10 K; above 10 K, the individual spins are uncorrelated, and [Ce(cot)2]- behaves as an isolated f1 paramagnet. The EPR at 1.5K for Ce2(cot)3 and [Ce(cot)2]- have ground state of MJ= +- 1/2. The LIII edge XANES of Ce(cot)2 (Booth, C.H.; Walter, M.D.; Daniel, M.; Lukens, W.W., Andersen, R.A., Phys. Rev. Lett. 2005, 95, 267202) and 2Ce2(cot)3 over 30-500 K are reported; the Ce(cot)2 XANES spectra show Ce(III) and Ce(IV) signatures up to a temperature of approximately 500 K, whereupon the Ce(IV) signature disappears, consistent with the thermal behavior observed in the melting experiment. The EXAFS of Ce(cot)2 and Ce2(cot)3 are reported at 30 K; the agreement between the molecular parameters for Ce(cot)2 derived from EXAFS and single crystal X-ray diffraction data are excellent. In the case of Ce2(cot)3 no X-ray diffraction data are known to exist, but the EXAFS are consistent with a"triple-decker" sandwich structure. A molecular rationalization is presented for the electronic structure of cerocene having a multiconfiguration ground state that is an admixture of the two configurations Ce(III, 4f1)(cot1.5-)2 and Ce(IV, 4f0)(cot2-)2; the multiconfigurational ground state has profound effects on the magnetic properties and on the nature of the chemical bond in cerocene and, perhaps, other molecules.

  16. Comparison between the Oxygen Reduction Reaction Activity of Pd5Ce and Pt5Ce

    DEFF Research Database (Denmark)

    Tripkovic, Vladimir; Zheng, Jian; Rizzi, Gian Andrea

    2015-01-01

    A set of electrochemical and X-ray spectroscopy measurements have been used conjointly with density functional theory (DFT) simulations to study the activity and stability of Pd5Ce for the oxygen reduction reaction. A polycrystalline Pd5Ce rod has been selected as a model catalyst to test if resu......-Pd5Ce is more facile, requires less atom rearrangement, than transformation from Pt5Ce to Pt3Ce, which might explain the kinetic stability of Pt5Ce at low temperatures....

  17. The CE3R Network: current status and future perspectives

    Science.gov (United States)

    Lenhardt, Wolfgang; Pesaresi, Damiano; Živčić, Mladen; Costa, Giovanni; Kuk, Kresimir; Bondár, István; Duni, Llambro; Spacek, Petr

    2016-04-01

    In order to improve the monitoring of seismic activities in the border regions and to enhance the collaboration between countries and seismological institutions in Central Europe, the Environment Agency of the Slovenian Republic (ARSO), the Italian National Institute for Oceanography and Experimental Geophysics (OGS), the University of Trieste (UniTS) and the Austrian Central Institute for Meteorology and Geodynamics (ZAMG) established in 2001 the "South Eastern Alps Transfrontier Seismological Network". In May 2014 ARSO, OGS, UniTS and ZAMG agreed to formalize the transfrontier network, to name it "Central and East European Earthquake Research Network", (CE3RN or CE3R Network) in order to locate it geographically since cross-border networks can be established in other areas of the world and to expand their cooperation, including institutions in other countries. The University of Zagreb (UniZG) joined CE3RN in October 2014. The Kövesligethy Radó Seismological Observatory (KRSZO) of the Hungarian Academy of Sciences joined CE3RN in October 2015. The Institute of Geosciences, Energy, Water and Environment (IGEWE) of the Polytechnic University of Tirana joined CE3RN in November 2015. The Institute of Physics of the Earth (IPE) of the Masaryk University in Brno joined CE3RN in November 2015. CE3RN Parties intend to formalize and possibly extend their ongoing cooperation in the field of seismological data acquisition, exchange and use for seismological and earthquake engineering and civil protection purposes. The purpose of this cooperation is to retain and expand the existing cross-border network, specify the rules of conduct in the network management, improvements, extensions and enlargements, enhance seismological research in the region, and support civil protection activities. Since the formal establishment of CE3RN, several common projects have been completed, like the SeismoSAT project for the seismic data center connection over satellite funded by the Interreg

  18. The role of calcification for staging cystic echinococcosis (CE)

    Energy Technology Data Exchange (ETDEWEB)

    Hosch, Waldemar; Kauffmann, Guenter W. [University Hospital Heidelberg, Department of Radiology, Heidelberg (Germany); Stojkovic, Marija; Junghanss, Thomas [University Hospital of Heidelberg, Section of Clinical Tropical Medicine, Heidelberg (Germany); Jaenisch, Thomas [University Hospital of Heidelberg, Section of Clinical Tropical Medicine, Heidelberg (Germany); University Hospital of Heidelberg, Section of Biostatistics and Epidemiology, Heidelberg (Germany)

    2007-10-15

    The prevalence of calcified cysts and the significance of calcification as a sign of cyst inactivity in cystic echinococcosis (CE) was evaluated. Seventy-eight patients (36 females, 42 males, mean age 40.8 {+-} 16.9 years) with CE, having a total of 137 abdominal cysts (116 hepatic, three splenic, one renal and 17 peritoneal cysts), were diagnosed and followed-up by ultrasound during and after albendazole treatment or as part of the watch-and-wait approach recording changes in the cyst wall and content. In 48 patients with 94 cysts, computed tomography (CT) imaging was additionally available and was correlated with ultrasound findings. Cyst wall calcification was classified into (1) ''sprinkled'', (2) ''eggshell-like'', and (3) ''circular''. Calcification of the cyst wall and/or cyst content was detected in 67 echinococcal cysts (48.9% of all cysts) in 39 patients (15 females, 24 males, mean age 40.8 {+-} 14.8 years). Of the total of 67 calcified cysts, only 23 were compatible with WHO type CE5, 18 with WHO type CE4. Judged by cyst content, the remaining 26 were of WHO type CE1, CE2 and CE3 (n = 1, n = 8, and n = 17, respectively). During a mean period of 34.3 months ({+-}21.3 months) the majority of cysts (n = 32) did not exhibit any change in cyst content and wall properties. Fourteen cysts showed signs of progressive involution, five cysts (all of WHO type CE3) of renewed activity defined by recurring fluid collection. In 16 cysts, no follow-up was available due to surgery or drop out. Calcification of the cyst is not restricted to the inactive WHO cyst types CE4 and CE5, but occurs in all stages and in up to 50% of cysts. The completeness and, most importantly, the stability of consolidation of cyst content over time predicts cyst inactivity more reliably. (orig.)

  19. Crystal growth and scintillation properties of multi-component oxide single crystals: Ce:GGAG and Ce:La-GPS

    Energy Technology Data Exchange (ETDEWEB)

    Yoshikawa, A., E-mail: yoshikawa@imr.tohoku.ac.jp [Institute for Materials Research (IMR), Tohoku University, Sendai 980-8577 (Japan); New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai 980-8579 (Japan); C& A Corporation, 6-6-40 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579 (Japan); Kamada, K. [New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai 980-8579 (Japan); C& A Corporation, 6-6-40 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579 (Japan); Kurosawa, S. [Institute for Materials Research (IMR), Tohoku University, Sendai 980-8577 (Japan); New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai 980-8579 (Japan); Shoji, Y. [Institute for Materials Research (IMR), Tohoku University, Sendai 980-8577 (Japan); C& A Corporation, 6-6-40 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579 (Japan); Yokota, Y. [New Industry Creation Hatchery Center (NICHe), Tohoku University, Sendai 980-8579 (Japan); Chani, V.I. [Institute for Materials Research (IMR), Tohoku University, Sendai 980-8577 (Japan); Nikl, M. [Institute of Physics, AS CR, Cukrovarnická 10, 162 53 Prague (Czech Republic)

    2016-01-15

    Crystal growth by micro-pulling-down, Czochralski, and floating zone methods and scintillation properties of Ce:Gd{sub 3}(Ga,Al){sub 5}O{sub 12} (Ce:GGAG) multi-component oxide garnets, and Ce:Gd{sub 2}Si{sub 2}O{sub 7} (Ce:GPS) or Ce:(La,Gd){sub 2}Si{sub 2}O{sub 7} (Ce:La-GPS) pyro-silicates are reviewed. GGAG crystals demonstrated practically linear dependences of some of the parameters including lattice constant, emission wavelength, and band gap on Ga content. However, emission intensity, light yield and energy resolution showed maxima for intermediate compositions. GGAG crystals had the highest light yield of 56,000 photon/MeV for Ga content of 2.7 atoms per garnet formula unit. Similarly the light yield and energy resolution of La-GPS showed the highest values of 40,000 photon/MeV and 4.4%@662 keV, respectively, for La-GPS containing 10% of La. Moreover, La-GPS demonstrated stable scintillation performance up to 200 °C.

  20. Ce decay curves in Ce, Tb co-doped LaF3 and the energy transfer mechanism

    International Nuclear Information System (INIS)

    Kroon, R.E.; Swart, H.C.; Ntwaeaborwa, O.M.; Seed Ahmed, H.A.A.

    2014-01-01

    Energy transfer phenomena can play an important role in the development of luminescent materials, and hosts co-doped with Ce 3+ and Tb 3+ ions continue to be actively studied. Several recent reports on Ce, Tb co-doped phosphors suggest different mechanisms for the energy transfer from Ce 3+ to Tb 3+ ions and further study is required to reach consensus on the mechanism or to understand why different mechanisms dominate in different hosts. A more direct method of analysis is proposed to distinguish between the different types of multipole energy transfer mechanisms. When applied to Ce, Tb co-doped LaF 3 , the experimental data shows a poor match to any of these models but is consistent with energy transfer through the exchange mechanism. The decay curves of Ce emission in Ce, Tb co-doped LaF 3 were also studied to obtain further insight on the energy transfer mechanism. Although the decrease in lifetime with increasing Tb concentration shows that energy transfer occurs through a non-radiative mechanism, the form of the decay curves does not correspond to what is expected for energy transfer via multipole interactions.

  1. Optical and scintillation properties of Ce-doped LuLiF{sub 4} with different Ce concentrations

    Energy Technology Data Exchange (ETDEWEB)

    Yanagida, Takayuki, E-mail: yanagida@lsse.kyutech.ac.jp [Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0196 (Japan); Fujimoto, Yutaka [Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0196 (Japan); Fukuda, Kentaro [Tokuyama Corporation, Shibuya 3-chome, Shibuya-ku, Tokyo 150-8383 Japan (Japan); Chani, Valery [Tohoku Univ., 2-1-1 Katahira, Sendai 980-8577 (Japan)

    2013-11-21

    The crystals of 0.1, 0.5, and 1 mol% Ce-doped LuLiF{sub 4} (Ce:LLF) grown by the micro-pulling down (μ-PD) method were examined for their optical and scintillation properties. Ce:LLF crystals had ∼80% transparency at wavelengths longer than 300 nm. In photoluminescence spectra, they demonstrated intense emission peaks at 310 and 330 nm with the quantum yield of 60–90%. Ce{sup 3+} 5d–4f emission peaks were also detected at similar wavelengths of 310 and 330 nm in the radioluminescence spectra obtained under X-ray excitation. According to pulse height spectra recorded under γ-ray irradiation, the absolute light yield of Ce 0.1, 0.5, and 1% were 3600±400, 3000±300, and 1700±200 ph/MeV, respectively. Decay time kinetics was also inspected using a pulse X-ray equipped streak camera system. The decay time components of Ce:LLF were ∼70 ns and ∼1 μs for all the samples.

  2. Optical and scintillation properties of Ce-doped LuLiF4 with different Ce concentrations

    International Nuclear Information System (INIS)

    Yanagida, Takayuki; Fujimoto, Yutaka; Fukuda, Kentaro; Chani, Valery

    2013-01-01

    The crystals of 0.1, 0.5, and 1 mol% Ce-doped LuLiF 4 (Ce:LLF) grown by the micro-pulling down (μ-PD) method were examined for their optical and scintillation properties. Ce:LLF crystals had ∼80% transparency at wavelengths longer than 300 nm. In photoluminescence spectra, they demonstrated intense emission peaks at 310 and 330 nm with the quantum yield of 60–90%. Ce 3+ 5d–4f emission peaks were also detected at similar wavelengths of 310 and 330 nm in the radioluminescence spectra obtained under X-ray excitation. According to pulse height spectra recorded under γ-ray irradiation, the absolute light yield of Ce 0.1, 0.5, and 1% were 3600±400, 3000±300, and 1700±200 ph/MeV, respectively. Decay time kinetics was also inspected using a pulse X-ray equipped streak camera system. The decay time components of Ce:LLF were ∼70 ns and ∼1 μs for all the samples

  3. Influence of Ce-H bonding on the physical properties of the hydrides CeCoSiH1.0 and CeCoGeH1.0

    International Nuclear Information System (INIS)

    Chevalier, B; Matar, S F; Menetrier, M; Marcos, J Sanchez; Fernandez, J Rodriguez

    2006-01-01

    The hydrides CeCoSiH 1.0 and CeCoGeH 1.0 which crystallize like the parent antiferromagnetic compounds CeCoSi and CeCoGe in the tetragonal CeFeSi-type structure, have been investigated by specific heat and thermoelectric power measurements and 1 H nuclear magnetic resonance (NMR). CeCoSiH 1.0 is an intermediate valence compound whereas CeCoGeH 1.0 can be considered as a nearly trivalent cerium compound. This behaviour is corroborated by the occurrence of a slight broadening of the 1 H NMR signal in the sequence CeCoSiH 1.0 → CeCoGeH 1.0 . The band structure calculations performed on these hydrides reveal the existence of strong bonding Ce-H interaction, found to be larger in CeCoSiH 1.0 than in CeCoGeH 1.0

  4. Effect of yttrium on electron–phonon coupling strength of 5d state of Ce3+ ion in LYSO:Ce crystals

    International Nuclear Information System (INIS)

    Ding, Dongzhou; Liu, Bo; Wu, Yuntao; Yang, Jianhua; Ren, Guohao; Chen, Junfeng

    2014-01-01

    This paper aims at an improved understanding of luminescence properties of (Lu 1−x Y x ) 2 SiO 5 :Ce (x=0 at%, 26 at%, 45 at%, 66 at% and 100 at%). Photoluminescence emission and excitation spectra as well as Raman spectra of (Lu 1−x Y x ) 2 SiO 5 :Ce were investigated as a function of yttrium (shortened as Y) content in it. Obtained Huang–Rhys factor S indicates that the coupling between Ce1 (7-oxygen-coordinated), Ce2 (6-oxygen-coordinated) and LYSO lattice is intermediate and strong, respectively. Besides, it was found that: with the increase of Y content, crystal field strength around Ce1 and Ce2 decreases, Stokes shift of Ce1 and Ce2 presents an increase trend, and S of Ce2 tends to decrease. These phenomena were explained by geometrical influence of Y 3+ /Lu 3+ on the crystal field splitting of the 5d levels of Ce 3+ and coupling strength. With the increase of Y content, the evolution of S and coupling energy ħω of Ce1 present a slight increase and decrease trend respectively, while S and coupling energy ħω of Ce2 present an obvious decrease and increase trend, respectively. - Highlights: • Crystal field strength around Ce1 decreases with increase of Y content in LYSO:Ce. • A diagram of Huang–Rhys factor S against Y content in LYSO:Ce was constructed. • A diagram of coupling energy ħω against Y content in LYSO:Ce was constructed. • A diagram of Stokes shift against Y content in LYSO:Ce was constructed

  5. Ce-doped nanoparticles of TiO2: Rutile-to-brookite phase transition and evolution of Ce local-structure studied with XRD and XANES

    International Nuclear Information System (INIS)

    Kityakarn, Sutasinee; Worayingyong, Attera; Suramitr, Anwaraporn; Smith, M.F.

    2013-01-01

    The crystal and electronic structural changes undergone by TiO 2 nanoparticles when Ce is introduced were studied using X-ray diffraction (XRD) and X-ray absorption near-edge spectroscopy (XANES). A small amount of Ce (less than 1% molar concentration) resulted in i/a significant reduction of the average size of the TiO 2 nanoparticles and ii/a phase transition in which brookite replaced rutile as the minority phase component (anatase was the majority phase component at all Ce concentrations studied up to 10% molar concentration). The Ce L3 edge XANES revealed changes in the local environment of Ce impurities. As Ce concentration was increased the fraction of Ce that have formal valence of +3 decreased and, for the remaining Ce with valence +4, the 4f orbitals became less-strongly hybridized with the p-orbitals of oxygen neighbors. The results have implications for photocatalytic and gas sensing properties of Ce-doped TiO 2 . - Highlights: ► Ce-doping: TiO 2 nanoparticles shrink and minority phase changes rutile-> brookite. ► XANES reveals phase change for arbitrarily small particles (while XRD fails). ► As Ce added: fraction of Ce +3 dopants falls, hybridization of Ce +4 with O weakens

  6. Investigating the capability of ToF-SIMS to determine the oxidation state of Ce

    Science.gov (United States)

    Seed Ahmed, H. A. A.; Swart, H. C.; Kroon, R. E.

    2018-04-01

    The capability of time of flight secondary ion mass spectrometry (ToF-SIMS) to determine the oxidation state of Ce ions doped in a phosphor was investigated. Two samples of SiO2:Ce (4 mol%) with known Ce3+/Ce4+ relative concentrations were subjected to ToF-SIMS measurements. The spectra were very similar and no significant differences in the relative peak intensities were observed that would readily allow one to distinguish Ce3+ from Ce4+. Although ToF-SIMS was therefore not useful to distinguish the charge state of Ce ions doped in this phosphor material, the idea in principle was also tested on two other samples, namely CeF3 and CeF4 These contain Ce as part of the host (i.e. much higher concentration) and are fluorides, which is significant because ToF-SIMS has previously been reported to be able to distinguish Eu2+ from Eu3+ in Eu doped Sr5(PO4)3F phosphor. The spectrum of CeF4 contained a small peak related to Ce4+ which was not observed in the CeF3 spectrum, yet the peak related to the Ce3+ ions was found to be much more intense in the spectrum of CeF4 than CeF3, showing that the ToF-SIMS signals cannot be directly interpreted as retaining the charge state of the ions in the original material. Nevertheless, the significant differences in the Ce-related peaks in the ToF-SIMS spectra from CeF3 and CeF4 show that the charge state of Ce may be distinguished. This study shows that while in principle ToF-SIMS may be used to distinguish the charge state of Ce ions, this depends on the sample and it would not be easy to interpret the spectra without a standard or reference.

  7. PRODUTOS DO INTEMPERISMO E AVALIAÇÃO DO NÍVEL DE DETERIORAÇÃO EM ROCHAS ORNAMENTAIS DA FORTALEZA DE SANTA CRUZ (NITERÓI, RJ

    Directory of Open Access Journals (Sweden)

    André Luiz Carvalho da Silva

    2012-12-01

    Full Text Available DOI 10.12957/tamoios.2012.5084RESUMO A Fortaleza de Santa Cruz, magnífico exemplo da arquitetura dos tempos da chegada dos europeus ao nosso continente, começou a ser construída por volta de 1555 na entrada da Baía de Guanabara (Niterói, RJ com blocos de gnaisse facoidal local. De modo geral, rochas empregadas em construções em ambientes litorâneos e urbanos são expostas ao sal marinho, bem como, aos poluentes CO2, S e N e, em decorrência disso, os processos relacionados ao intemperismo podem causar danos consideráveis a essas construções. Na Fortaleza de Santa Cruz foram identificados diversos tipos de crostas (negra, de sal, orgânica, “flowstones” e estalactites como produtos do intemperismo. A intensidade dos processos é diferente nos três pavimentos que compõem a Fortaleza, levando a níveis distintos de deterioração dos blocos de rocha, em função da circulação, teor de umidade e de sal no ar em cada pavimento. Palavras-chaves: intemperismo; rochas ornamentais; crosta negra; dissolução.ABSTRACT The Santa Cruz Fort, a magnificent example of architecture at the time of arrival of the Europeans to our continent, began to be constructed at about 1555 at the entrance of the Guanabara Bay (Niterói, RJ with local blocks of augen gnaiss. In general, rocks employed in constructions in coastal and urban environments are exposed to sea derived salts and pollutants such as CO2, S and N and, as consequence of that, weathering related processes can cause considerable damage to these constructions. In the Santa Cruz Fort, various types of crusts (black, salt, organic, flowstones and stalactites have been identified as weathering products. The intensity of such processes is different in the Fort’s three main floors and that leads to distinct deteriorations levels of the blocks of rock in each floor, a function of air circulation, humidity and salt content.Keywords: Weathering; building stones; black crust; dissolution. 

  8. LE SYSTEME ALGERIEN DE PROTECTION SOCIALE : ENTRE ...

    African Journals Online (AJOL)

    Son plan de sécurité sociale s'inscrivait dans une politique d'ensemble à dominante ..... article, le non payement des cotisations par les entreprises et les ..... la stratégie de développement17 suivie par l'Etat après l'indépendance. Mais ce ...

  9. Exigences réglementaires et recommandations concernant le traitement de l'eau vis-à-vis des agents pathogènes en entrée et en sortie d'écloseries conchylicoles

    OpenAIRE

    Bonvarlet, Florence

    2011-01-01

    Ce document présente les exigences réglementaires et recommandations relatives aux différents traitement de l'eau en entrée et en sortie d'écloseries conchylicoles. Afin de respecter cette réglementation des solutions, des méthodes de traitement y sont mentionnées.

  10. Loparite-(Ce) from the Khibiny Alkaline Pluton, Kola Peninsula, Russia

    Science.gov (United States)

    Konopleva, N. G.; Ivanyuk, G. Yu.; Pakhomovsky, Ya. A.; Yakovenchuk, V. N.; Mikhailova, Yu. A.

    2017-12-01

    Data on the occurrence, morphology, anatomy, composition, and formation conditions of loparite-(Ce) in the Khibiny alkaline pluton are given. Loparite-(Ce), (Na,Ce,Sr)(Ce,Th)(Ti,Nb)2O6, resulted from metasomatic alteration and assimilation of metamorphic host rocks at the contact with foyaite as well as foyaite on the contact with foidolite. This alteration was the highest in pegmatite, and albitite developed there. A decrease in temperature resulted in enrichment of the perovskite and tausonite endmembers in loparite-(Ce) owing to a decrease in the loparite and lueshite endmembers. La and Ce sharply predominate among rare earth elements in the composition of loparite-(Ce).

  11. The crystal structure of galgenbergite-(Ce), CaCe2(CO3)4•H2O

    Science.gov (United States)

    Walter, Franz; Bojar, Hans-Peter; Hollerer, Christine E.; Mereiter, Kurt

    2013-04-01

    Galgenbergite-(Ce) from the type locality, the railroad tunnel Galgenberg between Leoben and St. Michael, Styria, Austria, was investigated. There it occurs in small fissures of an albite-chlorite schist as very thin tabular crystals building rosette-shaped aggregates associated with siderite, ancylite-(Ce), pyrite and calcite. Electron microprobe analyses gave CaO 9.49, Ce2O3 28.95, La2O3 11.70, Nd2O3 11.86, Pr2O3 3.48, CO2 30.00, H2O 3.07, total 98.55 wt.%. CO2 and H2O calculated by stoichiometry. The empirical formula (based on Ca + REE ∑3.0) is C{{a}_{1.00 }}{{( {C{{e}_{1.04 }}L{{a}_{0.42 }}N{{d}_{0.42 }}P{{r}_{0.12 }}} )}_{2.00 }}{{( {C{{O}_3}} )}_4}\\cdot {{H}_2}O , and the simplified formula is CaC{{e}_2}{{( {C{{O}_3}} )}_4}\\cdot {{H}_2}O . According to X-ray single crystal diffraction galgenbergite-(Ce) is triclinic, space group Poverline{1},a=6.3916(5) , b = 6.4005(4), c = 12.3898(9) Å, α = 100.884(4), β = 96.525(4), γ = 100.492(4)°, V = 483.64(6) Å3, Z = 2. The eight strongest lines in the powder X-ray diffraction pattern are [ d calc in Å/( I)/ hkl]: 5.052/(100)/011; 3.011/(70)/0-22; 3.006/(66)/004; 5.899/(59)/-101; 3.900/(51)/1-12; 3.125/(46)/-201; 2.526/(42)/022; 4.694/(38)/-102. The infrared absorption spectrum reveals H2O (OH-stretching mode at 3,489 cm-1, HOH bending mode at 1,607 cm-1) and indicates the presence of distinctly non-equivalent CO3-groups by double and quadruple peaks of their ν1, ν2, ν3 and ν4 modes. The crystal structure of galgenbergite-(Ce) was refined with X-ray single crystal data to R1 = 0.019 for 2,448 unique reflections ( I > 2 σ( I)) and 193 parameters. The three cation sites of the structure Ca(1), Ce(2) and Ce(3) have a modest mixed site occupation by Ca and small amount of REE (Ce, La, Pr, Nd) and vice versa. The structure is based on double layers parallel to (001), which are composed of Ca(1)Ce(2)(CO3)2 single layers with an ordered chessboard like arrangement of Ca and Ce, and with a roof tile

  12. SELF-ASSEMBLY CE OXIDE/ORGANOPOLYSILOXANE COMPOSITE COATINGS.

    Energy Technology Data Exchange (ETDEWEB)

    SUGAMA,T.; SABATINI,R.; GAWLIK,K.

    2005-01-01

    A self-assembly composite synthesis technology was used to put together a Ce(OH){sub 3}-dispersed poly-acetamide-acetoxyl methyl-propylsiloxane (PAAMPA) organometallic polymer. Three spontaneous reactions were involved; condensation, amidation, and acetoxylation, between the Ce acetate and aminopropylsilane triol (APST) at 150 C. An increase in temperature to 200 C led to the in-situ phase transformation of Ce(OH){sub 3} into Ce{sub 2}O{sub 3} in the PAAMPA matrix. A further increase to 250 C caused oxidative degradation of the PAAMPA, thereby generating copious fissures in the composite. We assessed the potential of Ce(OH){sub 3}/ and Ce{sub 2}O{sub 3}/ PAAMPA composite materials as corrosion-preventing coatings for carbon steel and aluminum. The Ce{sub 2}O{sub 3} composite coating displayed better performance in protecting both metals against NaCl-caused corrosion than did the Ce(OH){sub 3} composite. Using this coating formed at 200 C, we demonstrated that the following four factors played an essential role in further mitigating the corrosion of the metals: First was a minimum susceptibility of coating's surface to moisture; second was an enhanced densification of the coating layer; third was the retardation of the cathodic oxygen reduction reaction at the metal's corrosion sites due to the deposition of Ce{sub 2}O{sub 3} as a passive film over the metal's surface; and, fourth was its good adherence to metals. The last two factors contributed to minimizing the cathodic delamination of coating film from the metal's surface. We also noted that the affinity of the composite with the surface of aluminum was much stronger than that with steel. Correspondingly, the rate of corrosion of aluminum was reduced as much as two orders of magnitude by a nanoscale thick coating. In contrast, its ability to reduce the corrosion rate of steel was lower than one order of magnitude.

  13. Levels in 146Ce and the N = 88 isotones

    International Nuclear Information System (INIS)

    Gowdy, G.M.; Chrien, R.E.; Chu, Y.Y.

    1981-01-01

    An investigation of the level structure of 146 Ce following the beta decay of the low-spin isomer of 146 La has been carried out at the ISOL facility TRISTAN at Brookhaven National Laboratory. The half-life for the low spin isomer was found to be 6.0 +- 0.4s. A partial level scheme for 146 Ce below 2 MeV is given. The level energies and some B(E2) values extracted from our data have been compared with IBA-2 calculations done entirely with extrapolated parameters from neighboring Z nuclei in order to check the predictive power of the model. Systematics of the Z = 58 isotopes and N = 88 isotones indicate that although 146 Ce is more deformed than its isotones with Z greater than or equal to 60, the transition to the well-deformed region can probably more correctly be thought to occur after 146 Ce, between N = 88 and N = 90, as it does for Z greater than or equal to 60. The abrupt onset of deformation present in the higher Z isotopes is not seen in the Ce isotopes where the trend is found to be rather smooth throughout

  14. An Update on NiCE Support for BISON

    Energy Technology Data Exchange (ETDEWEB)

    McCaskey, Alex [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Billings, Jay Jay [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Deyton, Jordan H. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Wojtowicz, Anna [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2015-09-01

    The Nuclear Energy Advanced Modeling and Simulation program (NEAMS) from the Department of Energy s Office of Nuclear Energy has funded the development of a modeling and simulation workflow environment to support the various codes in its nuclear energy scientific computing toolkit. This NEAMS Integrated Computational Environment (NiCE) provides extensible tools and services that enable efficient code execution, input generation, pre-processing visualizations, and post-simulation data analysis and visualization for a large portion of the NEAMS Toolkit. A strong focus for the NiCE development team throughout FY 2015 has been support for the Multiphysics Object Oriented Simulation Environment (MOOSE) and the NEAMS nuclear fuel performance modeling application built on that environment, BISON. There is a strong desire in the program to enable and facilitate the use of BISON throughout nuclear energy research and industry. A primary result of this desire is the need for strong support for BISON in NiCE. This report will detail improvements to NiCE support for BISON. We will present a new and improved interface for interacting with BISON simulations in a variety of ways: (1) improved input model generation, (2) embedded mesh and solution data visualizations, and (3) local and remote BISON simulation launch. We will also show how NiCE has been extended to provide support for BISON code development.

  15. Using Ce to modify inclusion in spring steel

    Directory of Open Access Journals (Sweden)

    Wang Q.

    2017-01-01

    Full Text Available The effect of rare earth metals addition on the Al2O3 inclusions in spring steel used in fastener of high speed railway was investigated by metallographic examination, SEM-EDS and composition analysis. To deform those harmful inclusions to improve material performance,the evolution process of Al2O3 inclusions was investigated through the surface and line scanning. Ce metal modifying Al2O3 is a stepwise reduction process based on a formation of ring shape Ce-riched band around the Al2O3 inclusions during reaction process. Through experiment and thermodynamic calculation, an evolvement rule about Al2O3 inclusions change after Ce addition is obtained, i.e. Al2O3→Ce2O3-Al2O3→Ce2O2S. Changing the inclusions from Al2O3 to rare earth inclusions could improve the resistance to pitting corrosion based on potentiodynamic anodic polarization test.

  16. Mechanochemical synthesis of ultrafine Ce2S3 powder

    International Nuclear Information System (INIS)

    Tsuzuki, T.; McCormick, P.G.

    1998-01-01

    Full text: Rare earth sulphides have been receiving an increasing attraction for various applications including infrared window materials and magneto-optical devices. In particular, Ce 2 S 3 has been under intensive study for use as a red pigment to replace toxic cadmium sulfoselenide. The conventional method for synthesising Ce 2 S 3 is the sulphidization of the element or sesquioxide with hydrogen sulphide gas. However, the method usually requires a high-temperature process (>1000 deg C), and hence coarse particles larger than the optimal size of ∼ 2 S 3 powder by mechanochemical processing using X-ray diffraction spectroscopy, BET surface area analysis and transmission electron microscopy. Mechanical milling of the mixture of a cerium salt and an alkali/alkali-earth sulphide powders led to a solid state displacement reaction in a steady-state manner, forming Ce 2 S 3 nanoparticles in a salt by-product matrix. After a simple washing process to remove the salt by-product, ultrafine Ce 2 S 3 particles with sizes of 20 - 200 nm having an orthorhombic structure were obtained. Using a diluent and mechanically alloyed CaS nanoparticles in the starting powder, particles of only a cubic γ-Ce 2 S 3 phase with sizes of 10 - 80 nm were formed

  17. Estructura Organizacional de las Empresas Vinculadas a la Incubadora de Base Tecnológica de la Universidad de Fortaleza: Un Análisis Bajo la Perspectiva de Mintzberg.

    Directory of Open Access Journals (Sweden)

    Sarah Mesquita Lima

    2014-09-01

    Full Text Available El presente estudio tiene el objetivo principal de analizar si la configuración estructural predominante de las empresas asociadas a la Incubadora de Base Tecnológica de la Universidad de Fortaleza está vinculada a sus competencias. Para alcanzar el objetivo propuesto se realizó una investigación descriptiva y cualitativa, con estudio de múltiples casos. Los datos fueron recolectados mediante el análisis de documentos, entrevista con el coordinador del Espacio de Desarrollo de Empresas de Tecnología (EDETEC de la UNIFOR y aplicación de cuestionarios auto-administrados en las empresas vinculadas al EDETEC/UNIFOR. Los resultados indicaron el predominio de las configuraciones Burocracia Profesional, Estructura Simple y Adhocracia, estando estas dos últimas directamente vinculadas a las competencias emprendedoras e innovadoras.

  18. Proximity effect of Pb on CeCu6 and La0.05Ce0.95Cu6

    International Nuclear Information System (INIS)

    Chen, T.P.; Tipparachi, U.; Yang, H.D.; Wang, J.T.; Chen, B.; Chen, J.C.J.

    1999-01-01

    Heavy fermion materials have attracted a great deal of attention since 1979. These materials which contain a rare earth (U, or Ce, etc.) element exhibit unusual behavior at low temperature. The effective mass m* of the Landau quasiparticles is found to be orders of magnitude higher than that of a bare electron. Some of the Heavy Fermion materials become superconductors at low temperature. The pairing of electrons in these superconductors may not be of s symmetry like those in BCS type superconductors. The mismatch in electronic mass and the difference in pairing state between the light conventional superconducting electrons and the heavy fermion electrons have brought the coupling between light electrons (BCS type) and the heavy fermion electrons into question. Proximity effect of Pb on CeCu 6 , Pb on La 0.05 Ce 0.95 Cu 6 , and Pb on Cu was used to investigate the coupling between the conventional superconducting electrons of Pb and the heavy electrons in CeCu 6 or La 0.05 Ce 0.95 Cu 6 . In this experiment proximity effect was found between Pb and CeCu 6 , as well as between Pb and La 0.05 Ce 0.95 Cu 6 . However, the proximity effect is small when compared with that between Pb and Cu. This indicates a much shorter extrapolation length in the heavy fermion materials than in Cu. Such a phenomenon can be explained by the mismatch in effective mass between the superconducting Pb electrons and the heavy fermion electrons

  19. Arteterapia na assistência de enfermagem em oncologia: produções, expressões e sentidos entre pacientes e estudantes de graduação Terapia con arte en la ayuda de enfermería en oncología: producciones, expresiones y sentidos entre pacientes y estudiantes de Graduación Art therapy in oncology's nursing care: productions, expressions and meanings among patients and graduation students

    Directory of Open Access Journals (Sweden)

    Izabel Cristina Falcão Juvenal Barbosa

    2007-06-01

    Full Text Available O objetivo deste artigo é relatar a experiência vivida por um grupo de alunas do Curso de Graduação em Enfermagem da Universidade Federal do Ceará, na disciplina Administração do Processo de Trabalho em Enfermagem II, na administração do ócio dos pacientes em um hospital de Fortaleza-CE. A experiência didática foi uma representação plástica a partir do Quadro de Referência Cognitivo-Comportamental realizado em abril de 2002, e teve como sujeitos sete pacientes e seis alunas de enfermagem. A criatividade artística dos pacientes fluiu em conseqüência do diálogo do artista com sua produção. A análise das produções artísticas foi complementada pelas observações das alunas. As obras produzidas foram interpretadas com a ajuda do teste de cores de Lüscher o que permitiu inferir o comportamento e os sentimentos exteriorizados nas cores variadas selecionadas pelos pacientes.El objetivo de este artículo es relatar la experiencia vivida por un grupo de alumnas del Curso de Graduación en Enfermería de la Universidad Federal del Ceará (Brasil, en la disciplina Administración del Proceso de Trabajo en Enfermería II, en la administración de la ociosidad de los pacientes en un hospital de Fortaleza - Ceára, Brasil. La experiencia didáctica fue una representación plástica desde el Cuadro de Referencia Cognoscitivo y del Comportamiento realizado en abril de 2002, y tenía como sujetos siete pacientes y seis alumnas de enfermería. La creatividad artística de los pacientes fluyó en consecuencia del diálogo del artista con su producción. El análisis de las producciones artísticas fue complementado por las observaciones de las alumnas. Las obras producidas habían sido interpretadas con la ayuda de la prueba de colores de Lüscher que permitió inferir en el comportamiento y en las sensaciones exteriorizadas en los colores variados seleccionados por los pacientesThe objective of this article is to report the experience

  20. Neutron scattering study of Ce3Au3Sb4

    International Nuclear Information System (INIS)

    Kasaya, Mitsuo; Katoh, Kenichi; Kohgi, Masahumi; Osakabe, Toyotaka

    1993-01-01

    Rare-earth compounds with an Y 3 Au 3 Sb 4 -type crystal structure are semiconductors or semi-metals. Among them, Ce 3 Au 3 Sb 4 is a semiconductor with an activation energy of about 640 K and shows no magnetic order down to 1.5 K. The magnetic part of the specific heat for Ce 3 Au 3 Sb 4 obtained by subtracting the value for La 3 Au 3 Sb 4 from the total specific heat of Ce 3 Au 3 Sb 4 shows a broad peak at around 10 K, the origin of which is well explained by the crystalline-field splitting determined by neutron scattering. (author)

  1. Electron traps and scintillation mechanism in YAlO3:Ce and LuAlO3:Ce scintillators

    International Nuclear Information System (INIS)

    Wojtowicz, A.J.; Glodo, J.; Drozdowski, W.; Przegietka, K.R.

    1998-01-01

    In this paper we present the results of thermoluminescence, isothermal decay and scintillation light yield measurements on two isostructural scintillator materials, YAlO 3 :Ce and LuAlO 3 :Ce. In addition to the variety of deep traps identified by thermoluminescence and isothermal decays, scintillation light yield experiments demonstrate the presence in both materials of a number of relatively shallow traps. While the deep traps may reduce the scintillation light yield, they do not influence the kinetics of the process. The shallow traps, on the other hand, by interfering with the process of radiative recombination of charge carriers via Ce 3+ ions, can strongly affect not only the yield of the scintillation process but its kinetics as well. The presence of shallow traps provides a consistent explanation for a number of poorly understood relationships between the two scintillator materials, including a higher room temperature scintillation light yield and longer scintillation decay time in YAlO 3 :Ce, and a longer scintillation rise time in LuAlO 3 :Ce. Theoretical analysis indicates that elimination of these traps would make the two materials nearly identical in scintillator performance. Although the specific identity of all traps remains elusive, the performance of both scintillator materials is now, in practical terms, fully understood. (Copyright (c) 1998 Elsevier Science B.V., Amsterdam. All rights reserved.)

  2. Mechanical properties of non-centrosymmetric CePt3Si and CePt3B

    Science.gov (United States)

    Rogl, G.; Legut, D.; Sýkora, R.; Müller, P.; Müller, H.; Bauer, E.; Puchegger, S.; Zehetbauer, M.; Rogl, P.

    2017-05-01

    Elastic moduli, hardness (both at room temperature) and thermal expansion (4.2-670 K) have been experimentally determined for polycrystalline CePt3Si and its prototype compound CePt3B as well as for single-crystalline CePt3Si. Resonant ultrasound spectroscopy was used to determine elastic properties (Young’s modulus E and Poisson’s ratio ν) via the eigenfrequencies of the sample and the knowledge of sample mass and dimensions. Bulk and shear moduli were calculated from E and ν, and the respective Debye temperatures were derived. In addition, ab initio DFT calculations were carried out for both compounds. A comparison of parameters evaluated from DFT with those of experiments revealed, in general, satisfactory agreement. Positive and negative thermal expansion values obtained from CePt3Si single crystal data are fairly well explained in terms of the crystalline electric field model, using CEF parameters derived recently from inelastic neutron scattering. DFT calculations, in addition, demonstrate that the atomic vibrations keep almost unaffected by the antisymmetric spin-orbit coupling present in systems with crystal structures having no inversion symmetry. This is opposite to electronic properties, where the antisymmetric spin-orbit interaction has shown to distinctly influence features like the superconducting condensate of CePt3Si.

  3. Homoleptic Ce(III) and Ce(IV) Nitroxide Complexes: Significant Stabilization of the 4+ Oxidation State

    Energy Technology Data Exchange (ETDEWEB)

    Bogart, Justin A.; Lewis, Andrew J.; Medling, Scott A.; Piro, Nicholas A.; Carroll, Patrick J.; Booth, Corwin H.; Schelter, Eric J.

    2014-06-25

    Electrochemical experiments performed on the complex Ce-IV[2-((BuNO)-Bu-t)py](4), where [2-((BuNO)-Bu-t)py](-) = N-tert-butyl-N-2-pyridylnitroxide, indicate a 2.51 V stabilization of the 4+ oxidation state of Ce compared to [(Bu4N)-Bu-n](2)[Ce(NO3)(6)] in acetonitrile and a 2.95 V stabilization compared to the standard potential for the ion under aqueous conditions. Density functional theory calculations suggest that this preference for the higher oxidation state is a result of the tetrakis(nitroxide) ligand framework at the Ce cation, which allows for effective electron donation into, and partial covalent overlap with, vacant 4f orbitals with delta symmetry. The results speak to the behavior of CeO2 and related solid solutions in oxygen uptake and transport applications, in particular an inherent local character of bonding that stabilizes the 4+ oxidation state. The results indicate a cerium(IV) complex that has been stabilized to an unprecedented degree through tuning of its ligand-field environment.

  4. Surface and bulk 4f-photoemission spectra of CeIn3 and CeSn3

    International Nuclear Information System (INIS)

    Kim, H.; Tjernberg, O.; Chiaia, G.; Kumigashira, H.; Takahashi, T.; Duo, L.; Sakai, O.; Kasaya, M.; Lindau, I.

    1997-01-01

    Resonant photoemission spectroscopy was performed on CeIn 3 and CeSn 3 at the 4d-4f and 3d-4f core thresholds. Using the different surface sensitivity between the two photon energies, surface and bulk 4f-photoemission spectra were derived for both compounds. With the noncrossing approximation of the Anderson impurity model, the 4d-4f resonant spectra together with the surface and bulk spectra were self-consistently analyzed to obtain the microscopic parameters such as the 4f-electron energy and the hybridization strength with conduction electrons. The result shows a substantial difference in these parameters between the surface and the bulk, indicating that it is important to take into account the surface effect in analyzing photoemission spectra of Ce compounds. It is also found that the 4f surface core-level shift is different between CeIn 3 and CeSn 3 . copyright 1997 The American Physical Society

  5. Patpong, entre sexe et commerce.

    Directory of Open Access Journals (Sweden)

    Sébastien Roux

    2010-03-01

    Full Text Available Le tourisme dit « sexuel » est aujourd’hui décrié comme une forme de tourisme international immoral, un dysfonctionnement grave de la mondialisation appelant une réaction politique contre « l’exploitation sexuelle » dont seraient victimes des millions de femmes et d’enfants. Pourtant, derrière l’apparente évidence du « tourisme sexuel » comme expression de sens commun, rares sont les enquêtes qui explicitent la réalité concrète des échanges prostitutionnels. En adoptant une démarche ethnographique, l’article décrit le fonctionnement de Patpong, un quartier rouge de Bangkok dédié à une clientèle internationale. Par la description des offres disponibles, des revenus générés, des codes et des pratiques, la complexité de l’espace réapparaît. Il s’agit de donner à voir la réalité des échanges pour interroger l’articulation entre commerce et sexualité. L’analyse ethnographique du tourisme sexuel permet ainsi de souligner la diversité des pratiques et de rappeler que les formes les plus visibles — et les plus commentées — d’échanges prostitutionnels éclipsent trop souvent une pluralité d’expériences qui participe pourtant au succès de ces ruelles mondialement connues. So-called sex tourism is condemned as an immoral form of international tourism, a serious failure of globalization requiring political action against the “sexual exploitation” suffered by millions of women and children. Yet behind the common and seemingly evident understanding of “sexual tourism,” few studies have focused on the actual reality of such relations. Based on an ethnographic study, this article presents the structure of Patpong, a red-light district of Bangkok dedicated to international tourism. First, the article aims to briefly present the historical development of Patpong. This peculiar space is intrinsically linked to sex tourism, as these world-renowned streets expanded since the mid-60s to

  6. Pd/CeO2/SiC Chemical Sensors

    Science.gov (United States)

    Lu, Weijie; Collins, W. Eugene

    2005-01-01

    The incorporation of nanostructured interfacial layers of CeO2 has been proposed to enhance the performances of Pd/SiC Schottky diodes used to sense hydrogen and hydrocarbons at high temperatures. If successful, this development could prove beneficial in numerous applications in which there are requirements to sense hydrogen and hydrocarbons at high temperatures: examples include monitoring of exhaust gases from engines and detecting fires. Sensitivity and thermal stability are major considerations affecting the development of high-temperature chemical sensors. In the case of a metal/SiC Schottky diode for a number of metals, the SiC becomes more chemically active in the presence of the thin metal film on the SiC surface at high temperature. This increase in chemical reactivity causes changes in chemical composition and structure of the metal/SiC interface. The practical effect of the changes is to alter the electronic and other properties of the device in such a manner as to degrade its performance as a chemical sensor. To delay or prevent these changes, it is necessary to limit operation to a temperature sensor structures. The present proposal to incorporate interfacial CeO2 films is based partly on the observation that nanostructured materials in general have potentially useful electrical properties, including an ability to enhance the transfer of electrons. In particular, nanostructured CeO2, that is CeO2 with nanosized grains, has shown promise for incorporation into hightemperature electronic devices. Nanostructured CeO2 films can be formed on SiC and have been shown to exhibit high thermal stability on SiC, characterized by the ability to withstand temperatures somewhat greater than 700 C for limited times. The exchanges of oxygen between CeO2 and SiC prevent the formation of carbon and other chemical species that are unfavorable for operation of a SiC-based Schottky diode as a chemical sensor. Consequently, it is anticipated that in a Pd/CeO2/SiC Schottky

  7. Cooperative effects in CeCu2Si2

    International Nuclear Information System (INIS)

    Lang, M.; Modler, R.; Ahlheim, U.; Helfrich, R.; Reinders, P.H.P.; Steglich, F.; Assmus, W.; Sun, W.; Bruls, G.; Weber, D.; Luethi, B.

    1991-01-01

    Heavy-fermion superconductivity and other cooperative effects have been explored by thermal expansion, specific heat and ultrasound measurements on CeCu 2 Si 2 single crystals. Crystals annealed under Cu atmosphere show sharp superconducting transitions at Tc max =0.63 K. At the same temperature the ''as grown'', i.e., non-bulk-superconducting, crystals reveal a pronounced phase-transition anomaly, presumably of structural origin. This new transition is associated with an expansion of the volume upon cooling and gives rise to magnetic correlations. Our results indicate a complex interplay between lattice instability, magnetic phenomena and superconductivity in CeCu 2 Si 2 . (orig.)

  8. Magnetic Phase Transitions of CeSb. I

    DEFF Research Database (Denmark)

    Fischer, Pernille Hertz; Lebech, Bente; Meier, G.

    1978-01-01

    The magnetic ordering of the anomalous antiferromagnet CeSb, which has a NaCl crystal structure, was determined in zero applied magnetic field by means of neutron diffraction investigations of single crystals and powder. Below the Neel temperature TN of (16.1+or-0.1)K, there exist six partially...... a first-order phase transition at TN. At approximately TN/2 there is a first-order phase transition to a FCC type IA low-temperature configuration. The unusual magnetic properties of CeSb, which result from anisotropic exchange and crystalline electric field effects, resemble those of certain actinide Na...

  9. Isolation and functional characterization of CE1 binding proteins

    Directory of Open Access Journals (Sweden)

    Yu Ji-hyun

    2010-12-01

    Full Text Available Abstract Background Abscisic acid (ABA is a plant hormone that controls seed germination, protective responses to various abiotic stresses and seed maturation. The ABA-dependent processes entail changes in gene expression. Numerous genes are regulated by ABA, and promoter analyses of the genes revealed that cis-elements sharing the ACGTGGC consensus sequence are ubiquitous among ABA-regulated gene promoters. The importance of the core sequence, which is generally known as ABA response element (ABRE, has been demonstrated by various experiments, and its cognate transcription factors known as ABFs/AREBs have been identified. Although necessary, ABRE alone is not sufficient, and another cis-element known as "coupling element (CE" is required for full range ABA-regulation of gene expression. Several CEs are known. However, despite their importance, the cognate transcription factors mediating ABA response via CEs have not been reported to date. Here, we report the isolation of transcription factors that bind one of the coupling elements, CE1. Results To isolate CE1 binding proteins, we carried out yeast one-hybrid screens. Reporter genes containing a trimer of the CE1 element were prepared and introduced into a yeast strain. The yeast was transformed with library DNA that represents RNA isolated from ABA-treated Arabidopsis seedlings. From the screen of 3.6 million yeast transformants, we isolated 78 positive clones. Analysis of the clones revealed that a group of AP2/ERF domain proteins binds the CE1 element. We investigated their expression patterns and analyzed their overexpression lines to investigate the in vivo functions of the CE element binding factors (CEBFs. Here, we show that one of the CEBFs, AtERF13, confers ABA hypersensitivity in Arabidopsis, whereas two other CEBFs enhance sugar sensitivity. Conclusions Our results indicate that a group of AP2/ERF superfamily proteins interacts with CE1. Several CEBFs are known to mediate defense or

  10. Isolation and functional characterization of CE1 binding proteins.

    Science.gov (United States)

    Lee, Sun-ji; Park, Ji Hye; Lee, Mi Hun; Yu, Ji-hyun; Kim, Soo Young

    2010-12-16

    Abscisic acid (ABA) is a plant hormone that controls seed germination, protective responses to various abiotic stresses and seed maturation. The ABA-dependent processes entail changes in gene expression. Numerous genes are regulated by ABA, and promoter analyses of the genes revealed that cis-elements sharing the ACGTGGC consensus sequence are ubiquitous among ABA-regulated gene promoters. The importance of the core sequence, which is generally known as ABA response element (ABRE), has been demonstrated by various experiments, and its cognate transcription factors known as ABFs/AREBs have been identified. Although necessary, ABRE alone is not sufficient, and another cis-element known as "coupling element (CE)" is required for full range ABA-regulation of gene expression. Several CEs are known. However, despite their importance, the cognate transcription factors mediating ABA response via CEs have not been reported to date. Here, we report the isolation of transcription factors that bind one of the coupling elements, CE1. To isolate CE1 binding proteins, we carried out yeast one-hybrid screens. Reporter genes containing a trimer of the CE1 element were prepared and introduced into a yeast strain. The yeast was transformed with library DNA that represents RNA isolated from ABA-treated Arabidopsis seedlings. From the screen of 3.6 million yeast transformants, we isolated 78 positive clones. Analysis of the clones revealed that a group of AP2/ERF domain proteins binds the CE1 element. We investigated their expression patterns and analyzed their overexpression lines to investigate the in vivo functions of the CE element binding factors (CEBFs). Here, we show that one of the CEBFs, AtERF13, confers ABA hypersensitivity in Arabidopsis, whereas two other CEBFs enhance sugar sensitivity. Our results indicate that a group of AP2/ERF superfamily proteins interacts with CE1. Several CEBFs are known to mediate defense or abiotic stress response, but the physiological functions

  11. Investigation into kinetics of redox interaction in the system Ce(4). beta. -diketonate-additional ligand

    Energy Technology Data Exchange (ETDEWEB)

    Anufrieva, S.I.; Snezhko, N.I.; Pechurova, N.I.; Martynenko, L.N.; Spitsyn, V.I. (Moskovskij Gosudarstvennyj Univ. (USSR))

    1981-07-01

    The rate of reduction of ..beta..-diketonate complexes of Ce(4) to Ce(3) ..beta..-diketonates in benzene solution in the presence and in the absence of additional ligands is studied using spectrophotometry. The rate of reduction of Ce(4) ..beta..-diketonates increases in the series Ce(TTFA)/sub 4/<Ce(DPM)/sub 4/<Ce(DBM)/sub 4/<Ce(BA)/sub 4/<Ce(AA)/sub 4/ (TTFA - thenoyltrifluoroacetone, DPM- --dipivaloylmethane, DBM - dibenzoylmethane, BA benzoylacetone, AA - acetylacetone). The studied phosphorus-containing additional ligands as to their effect on the rate of Ce (4) reduction can be arranged in the following order: trioctylphosphine oxide>triphenylphosphine oxide>tributyl phosphate.

  12. Effect of cerium on the corrosion behaviour of sintered (Nd,Ce)FeB magnet

    Science.gov (United States)

    Yang, Lijing; Bi, Mengxue; Jiang, Jianjun; Ding, Xuefeng; Zhu, Minggang; Li, Wei; Lv, Zhongshan; Song, Zhenlun

    2017-06-01

    For the balanced consumption of rare-earth elements, cerium (Ce) was partially used for NdFeB magnets instead of Nd. The corrosion behaviour of the (Nd,Ce)FeB magnet with different Ce contents in 3.5% NaCl solution was investigated by SEM, XRD, EDS and electrochemical tests. After immersion, the weight loss was calculated and the magnetic properties of the samples were measured. Results showed that Ce affected the corrosion of the (Nd,Ce)FeB magnet. Compared with the NdFeB magnet without Ce but of the same grade as the magnetic energy product, (Nd,Ce)FeB magnet showed better corrosion resistance. With increased Ce content, the corrosion resistances and magnetic properties of (Nd,Ce)FeB magnets were investigated.

  13. Optical spectroscopy and luminescence quenching of LuI3:Ce3+

    International Nuclear Information System (INIS)

    Birowosuto, M.D.; Dorenbos, P.; Haas, J.T.M. de; Eijk, C.W.E. van; Kraemer, K.W.; Guedel, H.U.

    2006-01-01

    Optical spectroscopy of LuI 3 doped with Ce 3+ using ultraviolet and visible light excitation is reported. LuI 3 host excitation and emission and 4f-5d excitation and emission of Ce 3+ are observed. An empirical model based on crystal field splitting was used to estimate the energy of the highest 4f-5d excitation band. The crystal field splitting and centroid shift were compared to those of LuCl 3 :Ce 3+ and LuBr 3 :Ce 3+ . Temperature dependence of X-ray excited luminescence spectra shows thermal quenching, whereas that of the decay curve of Ce 3+ emission excited at the lowest 5d band of Ce 3+ does not indicate the presence of quenching of Ce 3+ emission for temperature below 625K. The quenching in LuI 3 :Ce 3+ therefore occurs before the 5d Ce 3+ emission takes place

  14. Scintillation response of BaF2 and YAlO3:Ce (YAP:Ce) to energetic ions

    International Nuclear Information System (INIS)

    Slunga, E.; Cederwall, B.; Ideguchi, E.; Kerek, A.; Klamra, W.; Marel, J. van der; Novak, D.; Norlin, L.-O.

    2001-01-01

    The scintillation response of BaF 2 and YAP:Ce to protons, α particles, 16 O and 28 Si ions in the 5-30 MeV range has been investigated. The ratio between the fast and slow parts of the scintillator signal for BaF 2 has been used to separate protons, α particles and heavier ions, and the dependence of this ratio on the particle energy has been studied. The time constants and intensities of the two components of the YAP:Ce signal were measured, as were the time constant and intensity of the weak component of the slow part of the BaF 2 signal. Furthermore, the dependence of the light yield on the particle energy has been investigated for both BaF 2 and YAP:Ce

  15. PERFIL DOS NASCIDOS VIVOS DE MARANGUAPE-CE: A PARTIR DA SÉRIE HISTÓRICA DE 2000 A 2003

    Directory of Open Access Journals (Sweden)

    NANCY COSTA DE OLIVEIRA

    2007-01-01

    Full Text Available El objetivo fue analizar el perfil de los nacidos vivos en Maranguape-CE, registrados en el Sistema de Información sobre Nacidos Vivos (SINASC entre enero de 2000 y diciembre de 2003. Se analizaron 5.032 declaraciones de nacidos vivos (DN de madres residentes en el municipio. Las DN fueron introducidas en el Software SINASC del Ministerio de Salud Pública y los datos presentados en tablas. Predominó la edad materna entre 21 y 30 años, instrucción entre 4 y 11 años de estudio, hubo aumento en el porcentaje de madres solteras, índice de APGAR variando entre 4 y 7 y peso al nacer entre 2.500g y 3.999g. El número de gestación única preponderó, así como el aumento en el número de consultas de prenatal, reducción de nacimientos prematuros y aumento en el porcentaje de parto cesariano. Las informaciones del SINASC son fundamentales al tomar una decisión adecuada en la salud materno-infantil. Las dificultades relacionadas a la sustentación del sistema tienen que ser superadas por medio de supervisión y control de los registros.

  16. Resistance to {gamma} irradiation of LaBr{sub 3}:Ce and LaCl{sub 3}:Ce single crystals

    Energy Technology Data Exchange (ETDEWEB)

    Normand, S. [CEA-Recherche Technologique, DETECS/SSTM CE Saclay F-91191 Gif Sur Yvette Cedex (France)]. E-mail: stephane.normand@cea.fr; Iltis, A. [Saint-Gobain Crystals, 104 Route de Larchant, 77140 St Pierre les Nemours (France); Bernard, F. [Saint-Gobain Crystals, 104 Route de Larchant, 77140 St Pierre les Nemours (France); Domenech, T. [CEA-Recherche Technologique, DETECS/SSTM CE Saclay F-91191 Gif Sur Yvette Cedex (France); Delacour, P. [CEA-Recherche Technologique, DETECS/SSTM CE Saclay F-91191 Gif Sur Yvette Cedex (France)

    2007-03-11

    LaBr{sub 3}:Ce (Brillance 380) and LaCl{sub 3}:Ce (Brillance 350) both exhibit a very good energy resolution and energy linearity response. They are also more sensitive to {gamma}-rays than NaI(Tl) detectors, due to their higher density. The aim of this work is to determine the behaviour of those new single crystals in comparison with NaI(Tl) under severe {gamma}-ray irradiation. Therefore we have irradiated three 25 by 25 mm cylinder crystals encapsulated in air-tight aluminium housing with {sup 60}Co beam. Crystals were tested as stand-alone material not to test the impact of radiation to our photomultiplier tube (PMT). Only encapsulated crystals (alone, without PMTs) were irradiated during several periods to achieve the final 3.4 kGy integrated dose. Intermediate measurements of {sup 137}Cs spectrum were done in order to evaluate the impact of the dose on the studied crystal performances. The radiation hardness of LaBr{sub 3}:Ce and LaCl{sub 3}:Ce was then compared to NaI(Tl). We show in this paper that up to 3.4 kGy no permanent modification of the energy resolution nor colour change is observed for LaBr{sub 3}:Ce and LaCl{sub 3}:Ce crystals. The light output also seems quite stable. This is in stark contrast with the behaviour of NaI:Tl which exhibits continuously decreasing light output, colour change and worsening of energy resolution for doses above 5 Gy.

  17. Freqüência e percentual de suscetibilidade de bactérias isoladas em pacientes atendidos na unidade de terapia intensiva do Hospital Geral de Fortaleza Frequency and susceptibility percentile of bacteria isolated in patients assisted in the intensive care unit of the General Hospital of Fortaleza

    Directory of Open Access Journals (Sweden)

    Everardo Albuquerque Menezes

    2007-06-01

    Full Text Available INTRODUÇAO: As infecções hospitalares, hoje, são motivo de grande preocupação no âmbito hospitalar, principalmente nas unidades de terapia intensiva (UTIs, nas quais encontramos uma associação de fatores propícios ao surgimento de infecções. Objetivos: Verificar a freqüência e o perfil de suscetibilidade aos antimicrobianos das bactérias isoladas de pacientes da UTI do Hospital Geral de Fortaleza (HGF. MATERIAL E MÉTODOS: As bactérias foram isoladas em meio de cultura e a identificação e o teste de suscetibilidade aos antimicrobianos realizados por meio do sistema de automação MicroScan WalkWay. RESULTADOS: No período de janeiro a dezembro de 2002 houve 34% de positividade de bactérias no aspirado traqueal de pacientes da UTI; 10% de positividade no cateter; 26% de positividade na urina; e 30% de positividade no sangue. As bactérias mais freqüentes do aspirado traqueal foram Pseudomonas aeruginosa (16% e Klebsiella pneumoniae (15%. Em cateteres, houve maior freqüência de Staphylococcus coagulase negativa (SCN (25% e Staphylococcus aureus (25%; na urina, predominaram Klebsiella pneumoniae (16% e Pseudomonas aeruginosa (14%. Em hemoculturas, as bactérias mais isoladas foram SCN (41% e Staphylococcus aureus (17%. Foi observado, em relação ao perfil de suscetibilidade, que as Pseudomonas aeruginosa isoladas de aspirado traqueal apresentaram total suscetibilidade à piperacilina e resistência total à ceftriaxona e à cefotaxima. A Klebsiella pneumoniae isolada de aspirados traqueais foi totalmente sensível ao imipenem, não apresentando resistência total a nenhum antimicrobiano testado, e apresentou suscetibilidade de 54% à ceftazidima. Em cateter ela apresentou resistência a ampicilina/sulbactam, cefepima, cefotaxima, ceftazidima, ceftriaxona, cefuroxima, gentamicina, piperacilina/tazobactam, piperacilina, ticarcilina/clavulanato e tobramicina, bem como suscetibilidade ao imipenem. Na urina, observamos 55% de

  18. Les partenariats entre les acteurs de tourisme pour la mise en place de durabilité, le cas de la région Marrakech Tensuft Alhaouz, au Maroc

    Directory of Open Access Journals (Sweden)

    Mohamed Hadach

    2015-09-01

    Full Text Available L’existence des partenariats entre les acteurs de tourisme est une condition sine qua non de succès des expériences de tourisme durable. D’abord les partenariats entre les acteurs privés et publics permettent la facilité de financement des infrastructures de qualité, nécessaires à la mise en place d’un tourisme qui respecte les exigences environnementales, économiques et socioculturelles, le partage des expériences et le savoir-faire des opérateurs internationaux. Ce travail a tenté de trouvé des raisonnements logiques de l’inadéquation entre l’offre et la demande en ce qui concerne les produits touristiques durables, à travers la mise en place d’une collaboration participative entre les différents acteurs de tourisme de la destination Marrakech au Maroc. En effet nous avons constaté que parmi les facteurs qui peuvent conduire à l’échec de toute forme de tourisme durable, le manque des études au préalable de la demande touristique en adéquation avec ce que les acteurs de tourisme peuvent proposer comme offre durable. Un conflit de temporalité entre la logique des acteurs publiques et celles des organismes privés de tourisme a été soulevé par plusieurs parties prenantes, de plus la nécessité de mettre en place une charte partenariale entre les acteurs de tourisme constitue un pilier pour la mise en place de la durabilité dans ce secteur.

  19. Dynamical magnetic response of paramagnetic CeFe-2

    International Nuclear Information System (INIS)

    Rainford, B.D.; McK Paul, D.; Warwick Univ., Coventry

    1988-01-01

    Inelastic neutron scattering has been used to study the energy dependence of the paramagnetic response from CeFe 2 . Our results, when integrated over energy, are in excellent agreement with the polarised neutron experiments of Deportes et al., but the correlation length obtained by fitting the data to a double Lorentzian scattering function is significantly smaller than that derived previously

  20. Magnetic domains and frustration in metallic CePdAl

    Energy Technology Data Exchange (ETDEWEB)

    Lucas, Stefan; Huesges, Zita; Huang, Chien-Lung; Stockert, Oliver [Max Planck Institute CPfS, Dresden (Germany); Fritsch, Veronika; Sakai, Akito [EP 6, Electronic Correlations and Magnetism, University of Augsburg (Germany); Grube, Kai; Taubenheim, Christian; Loehneysen, Hilbert von [Karlsruhe Institute of Technology (Germany)

    2016-07-01

    Magnetic frustration is an exciting topic in condensed matter physics, since it can lead to new ground states of materials, e.g. a spin liquid or spin glass state. Effects of magnetic frustration have been investigated intensively for insulating materials. However, the existence of magnetic frustration in metallic systems is still under debate. CePdAl is a metallic Kondo system, where geometric magnetic frustration arises from the formation of Ce ions on a distorted Kagome lattice. Neutron scattering experiments revealed, that only two thirds of the magnetic Ce moments order antiferromagnetically below T{sub N}=2.7 K, whereas the other third remains mainly disordered. Thermodynamic as well as neutron scattering measurements are presented to verify the existence of partial magnetic frustration in CePdAl. Recently neutron diffraction experiments under magnetic fields applied along two orthogonal directions in the magnetically hard basal plane were performed. They show opposite effects on the magnetic intensity of a selected magnetic domain depending on the field direction with respect to the propagation vector. If this is only an effect of different domain population or also due to a change in magnetic frustration shall be discussed.

  1. CE microchips: an opened gate to food analysis.

    Science.gov (United States)

    Escarpa, Alberto; González, María Cristina; Crevillén, Agustín González; Blasco, Antonio Javier

    2007-03-01

    CE microchips are the first generation of micrototal analysis systems (-TAS) emerging in the miniaturization scene of food analysis. CE microchips for food analysis are fabricated in both glass and polymer materials, such as PDMS and poly(methyl methacrylate) (PMMA), and use simple layouts of simple and double T crosses. Nowadays, the detection route preferred is electrochemical in both, amperometry and conductivity modes, using end-channel and contactless configurations, respectively. Food applications using CE microchips are now emerging since food samples present complex matrices, the selectivity being a very important challenge because the total integration of analytical steps into microchip format is very difficult. As a consequence, the first contributions that have recently appeared in the relevant literature are based primarily on fast separations of analytes of high food significance. These protocols are combined with different strategies to achieve selectivity using a suitable nonextensive sample preparation and/or strategically choosing detection routes. Polyphenolic compounds, amino acids, preservatives, and organic and inorganic ions have been studied using CE microchips. Thus, new and exciting future expectations arise in the domain of food analysis. However, several drawbacks could easily be found and assumed within the miniaturization map.

  2. O- centers in LuAG:Ce,Mg ceramics

    Czech Academy of Sciences Publication Activity Database

    Hu, C.; Liu, S.; Fasoli, M.; Vedda, A.; Nikl, Martin; Feng, X. Q.; Pan, Y.B.

    2015-01-01

    Roč. 9, č. 4 (2015), s. 245-249 ISSN 1862-6254 R&D Projects: GA ČR GAP204/12/0805 Institutional support: RVO:68378271 Keywords : scintillator * hole center * EPR * LuAG * Ce 3+ Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 2.578, year: 2015

  3. CE of phytosiderophores and related metal species in plants.

    Science.gov (United States)

    Xuan, Yue; Scheuermann, Enrico B; Meda, Anderson R; Jacob, Peter; von Wirén, Nicolaus; Weber, Günther

    2007-10-01

    Phytosiderophores (PS) and the closely related substance nicotianamine (NA) are key substances in metal uptake into graminaceous plants. Here, the CE separation of these substances and related metal species is demonstrated. In particular, the three PS 2'-deoxymugineic acid (DMA), mugineic acid (MA), and 3-epi-hydroxymugineic acid (epi-HMA), and NA, are separated using MES/Tris buffer at pH 7.3. Moreover, three Fe(III) species of the different PS are separated without any stability problems, which are often present in chromatographic analyses. Also divalent metal species of Cu, Ni, and Zn with the ligands DMA and NA are separated with the same method. By using a special, zwitterionic CE capillary, even the separation of two isomeric Fe(III) chelates with the ligand ethylenediamine-N,N'-bis(o-hydroxyphenyl)acetic acid (EDDHA) is possible (i.e., meso-Fe(III)-EDDHA and rac-Fe(III)-EDDHA), and for fast separations of NA and respective divalent and trivalent metal species, a polymer CE microchip with suppressed EOF is described. The proposed CE method is applicable to real plant samples, and enables to detect changes of metal species (Cu-DMA, Ni-NA), which are directly correlated to biological processes.

  4. CE-TOF/MS: fundamental concepts, instrumental considerations and applications.

    Science.gov (United States)

    Staub, Aline; Schappler, Julie; Rudaz, Serge; Veuthey, Jean-Luc

    2009-05-01

    This review discusses the fundamental principles of TOF analyzers and covers the great progress that has been made in this area in recent years (i.e. orthogonal acceleration, reflectron). This paper also gives an overview of applications performed by CE coupled to TOF/MS detection. The main domains of interest include the analysis of biomolecules and natural compounds.

  5. Projected shell model study of neutron- deficient 122Ce

    Indian Academy of Sciences (India)

    Projected shell model; band diagram; yrast energies; electromagnetic quan- ... signed to 122Ce by detecting γ-rays in coincidence with evaporated charged particles .... 0.75 from the free nucleon values to account for the core-polarization and ...

  6. Diffusion of hydrogen in Pd-(Ce, Y, B) alloys

    International Nuclear Information System (INIS)

    Sakamoto, Y.; Kaneko, H.; Tsukahara, T.; Hirata, S.

    1987-01-01

    The study has been carried out to determine the diffusivity of hydrogen in Pd alloys containing Ce, Y and B in atom fractions up to θ/sub μ/ = 0.1 by an electrochemical permeation method, and to examine the lattice dilation effect on the diffusivity in these alloys. Ce and Y have been chosen because the solid solubility of both in Pd is about 13 at% in spite of the very large atomic size-factor difference between Pd and the solutes, and thus the expansion of the Pd lattice by Ce and Y is much larger than by Ag. Furthermore, it is of interest that the partial enthalpy of the dissolved hydrogen at infinite dilution ΔH 0 /sub H/ for Ce and Y is much smaller than for Pd. On the other hand, B atom also expands the Pd lattice in a way similar to Y, and sometimes B atoms may dissolve in the octahedral interstitial sites in the same way as hydrogen atoms

  7. Commensurate-commensurate magnetic phase transitions in CeSb

    DEFF Research Database (Denmark)

    Lebech, Bente; Broholm, C.; Clausen, K.

    1986-01-01

    The q=2/3 to q=4/7 commensurate-commensurate phase transition in CeSb has been studied by neutron diffraction. On cooling the commensurate wave vector q changes abruptly from 2/3 to a higher-order commensurate value (≈14/23) at T1

  8. Information System through ANIS at CeSAM

    Science.gov (United States)

    Moreau, C.; Agneray, F.; Gimenez, S.

    2015-09-01

    ANIS (AstroNomical Information System) is a web generic tool developed at CeSAM to facilitate and standardize the implementation of astronomical data of various kinds through private and/or public dedicated Information Systems. The architecture of ANIS is composed of a database server which contains the project data, a web user interface template which provides high level services (search, extract and display imaging and spectroscopic data using a combination of criteria, an object list, a sql query module or a cone search interfaces), a framework composed of several packages, and a metadata database managed by a web administration entity. The process to implement a new ANIS instance at CeSAM is easy and fast : the scientific project has to submit data or a data secure access, the CeSAM team installs the new instance (web interface template and the metadata database), and the project administrator can configure the instance with the web ANIS-administration entity. Currently, the CeSAM offers through ANIS a web access to VO compliant Information Systems for different projects (HeDaM, HST-COSMOS, CFHTLS-ZPhots, ExoDAT,...).

  9. Three-Dimensional Structure of CeO2 Nanocrystals

    DEFF Research Database (Denmark)

    Tan, Joyce Pei Ying; Tan, Hui Ru; Boothroyd, Chris

    2011-01-01

    Visualization of three-dimensional (3D) structures of materials at the nanometer scale can shed important information on the performance of their applications and provide insight into the growth mechanism of shape-controlled nanomaterials. In this paper, the 3D structures and growth pathway of Ce...

  10. A Sesame Equation of State for Dense Ce

    Energy Technology Data Exchange (ETDEWEB)

    Greeff, Carl William [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Crockett, Scott [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-03-15

    We generated a new Sesame equation of state table for Ce. It is a single effective phase table for the high density phases α, α ', ϵ and liquid. Also, the EOS is meant to be used with a ramp to represent the initial low density γ phase.

  11. Magnetic and transport properties of amorphous Ce-Al alloy

    Science.gov (United States)

    Amakai, Yusuke; Murayama, Shigeyuki; Momono, Naoki; Takano, Hideaki; Kuwai, Tomohiko

    2018-05-01

    Amorphous (a-)Ce50Al50 has been prepared by DC high-rate sputter method. The structure of the obtained sample has been confirmed to have an amorphous structure because there are no Bragg peaks in the X-ray diffraction measurement and have a clear exothermic peak by the differential scanning calorimetry measurement. We have measured the resistivity ρ, magnetic susceptibility χ, specific heat Cp and thermoelectric power S for a-Ce50Al50. The temperature dependence of ρ exhibits a small temperature dependence less than 10% in the whole temperature region. χ follows a Curie-Weiss behavior in the high-temperature region of T>90 K. The effective paramagnetic moment peff, estimated from C is 2.18 μB/Ce-atom. The low-temperature Cp/T increases rapidly with decreasing temperature and tends to a saturation. S(T) exhibits negative values in a wide temperature region. A minimum of S appear at around 60 K, and S decreases linearly with decreasing temperature down to 10 K. The low-temperature S is almost 0 μV/K down to 2 K. From these results, we have pointed out that present a-Ce50Al50 would be an incoherent Kondo material.

  12. Implementace OpenVPN na platformě Windows CE

    OpenAIRE

    Ešner, Oldřich

    2008-01-01

    Motivací pro vznik této diplomové práce, která navazuje na stejnojmenný semestrální projekt, byl převod aplikace pro tvorbu virtuálních privátních sítí OpenVPN z operačního systému Windows XP na platformu Windows CE Embedded 6.0. Práce pojednává obecně o virtuálních privátních sítích, a podrobněji o jedné z jejich implementací - OpenVPN. Uvádí základní vlastnosti operačního systému Windows CE, dále popisuje princip ovladačů zařízení v operačních systémech na bázi Windows NT, používaný Windows...

  13. Preparation and properties of Pr /Ce :YAG phosphors using ...

    Indian Academy of Sciences (India)

    2015-09-01

    Sep 1, 2015 ... [3] transparent ceramics for high power solid-state lasers and Ce:YAG ... and CO2−. 3 . ... be controlled to guarantee that all the metal ions are simul- taneously .... of hydrogen bonding interaction can lead to more serious.

  14. Itinerant magnetism in CeRh3B2

    DEFF Research Database (Denmark)

    Eriksson, Olle; Johansson, Börje; Brooks, M. S. S.

    1989-01-01

    Spin-polarized energy-band calculations, including spin-orbit coupling in the band Hamiltonian, have been performed on CeRh3B2. Good agreement is obtained between theory and experiment concerning the magnetic moment. It is also found that the magnetic moment varies strongly with volume and from...

  15. Estimation of bulk transfer coefficient for latent heat flux (Ce)

    Digital Repository Service at National Institute of Oceanography (India)

    Sadhuram, Y.

    The bulk transfer coefficient for latent heat flux (Ce) has been estimated over the Arabian Sea from the moisture budget during the pre-monsoon season of 1988. The computations have been made over two regions (A: 0-8 degrees N: 60-68 degrees E: B: 0...

  16. Geometry modeling for SAM-CE Monte Carlo calculations

    International Nuclear Information System (INIS)

    Steinberg, H.A.; Troubetzkoy, E.S.

    1980-01-01

    Three geometry packages have been developed and incorporated into SAM-CE, for representing in three dimensions the transport medium. These are combinatorial geometry - a general (non-lattice) system, complex combinatorial geometry - a very general system with lattice capability, and special reactor geometry - a special purpose system for light water reactor geometries. Their different attributes are described

  17. Heat capacity measurement of CeNbO4(s)

    International Nuclear Information System (INIS)

    Bhojane, S.M.; Kulkarni, Jayanthi; Kulkarni, S.G.

    2012-01-01

    Molar heat capacity of CeNbO 4 (s) was determined using differential scanning calorimeter in the temperature range of 550 to 900 K. The molar heat capacity values were least squares analysed and the dependence of molar heat capacity with temperature for CeNbO 4 (s) can be given as, J K -1 mol -1 = 94.7320 + 0.0852T-1.6073 x 10 6 T -2 (550≤T(K)≤900) Cerium is commonly used as an inactive analogue to plutonium; also it is an important fission product with moderate yield. Various Nb alloys are used as cladding material in nuclear industry. Hosts of thermodynamic data are needed to understand the various phenomena that occur in a nuclear reactor. In the present study, the molar heat capacity of CeNbO 4 (s) has been determined using high temperature differential scanning calorimeter in temperature range 550 to 900 K. This is one of the important compounds in the ternary system of Ce-Nb-O

  18. Les savanes d'Afrique centrale entre enclavement et intégration aux marchés

    OpenAIRE

    Magrin , Géraud; Jamin , Jean-Yves; Faure , Guy; Duteurtre , Guillaume

    2003-01-01

    International audience; Les savanes d'Afrique centrale qui s'étendent à travers le nord du Cameroun, le sud du Tchad et la République centrafricaine présentent une certaine homogénéité. Milieux de transition entre Sahel et Afrique forestière, ce sont des espaces enclavés, encore peu urbanisés, au peuplement contrasté, où la culture cotonnière marque fortement les systèmes agraires. Des changements rapides sont néanmoins en cours. La croissance démographique encourage l'intensification des cul...

  19. No risco da faca: crimes de honra e justiça privada no termo da Vila da Fortaleza (séc. XVIII-XIX

    Directory of Open Access Journals (Sweden)

    Walter de Carvalho Braga Júnior

    2013-12-01

    Full Text Available O presente trabalho visa, através do estudo de fontes jurídicas e processos criminais do Ceará de finais do século XVIII e início do XIX, compreender a relação entre crimes e justiça privada, dando destaque aos crimes contra a honra. As conexões entre mandantes de crimes e seus agentes ficam evidentes nas fontes. Os Autos de Querella e Denúncia nos permitem visualizar todas as tramas que envolviam homens e mulheres em uma sociedade regida pela violência e onde quem tinha poder e posses tinha a justiça ao seu lado. A morosidade da justiça e a sensação de impunidade reinante levaram muitas pessoa a tomarem a justiça em suas próprias mãos, dando cabo de suas querelas cotidianas de forma violenta. Como forma de coibir a onda de violência e manter o monopólio da aplicação da justiça, o Estado tomou diversas medidas, como o aumento da vigilância sobre os indivíduos, principalmente os vadios, que estava constantemente envolvidos em crimes violentos e agiam sob a tutela de um protetor poderoso. O objetivo principal deste trabalho é entender os processos que tornaram a ação violenta a forma principal de resolução de conflitos no Ceará e como esta banalização da violência se tornou marca característica da identidade cearense.

  20. Fatty acid composition of soybean/sunflower mix oil, fish oil and butterfat applying the AOCS Ce 1j-07 method with a modified temperature program

    Directory of Open Access Journals (Sweden)

    Masson, L.

    2015-03-01

    Full Text Available Gas-Liquid Chromatography (GLC methods such as AOAC Fat in foods 966.06 (2005, AOCS Official Methods Ce 1h-05 (2005, Ce 1j-07 (2007, allow for analyzing the fatty acids (FAs in dietary fats using highly polar liquid phase capillary columns. However, there are still difficulties in completely separating butiric acid from solvent, FA critical pairs with similar polarity, conjugated linoleic acid (CLA isomers, and long chainpolyunsaturated FAs (LC-PUFAs. Therefore, the selection of the temperature program to be employed is important. This work aimed to improve the AOCS Ce 1j-07 Method for the FA composition of a mixture of soybean and sunflower oil, fish oil, and butterfat, using a modified temperature program, tested among five laboratories. It takes more time, but it allows to completely separate butyric acid from the solvent, trans-18:1 from cis-18:1, 20:1 isomers from 18:3 n-3, 22:1 n-9 from 20:4 n-6, 20:5 n-3 from 24:0 and the main CLA isomers, thus permitting FA quantification in fats and oils for different purposes such as nutritional labeling, quality control and research.Métodos por cromatografía gas-líquido, AOAC 966.06 (2005, AOCS Ce 1h-05 (2005, Ce 1j-07 (2007 permiten determinar ácidos grasos (AG en matrices grasas usando columnas capilares altamente polares y distintos programas de temperatura. No obstante, aún existen dificultades para separar ácido butírico del solvente, pares críticos de AG con polaridades similares, isómeros del ácido linoleico conjugado (CLA, AG de cadena larga poliinsaturados (LC-PUFAs. El objetivo fue mejorar el Método AOCS Ce 1j-07 aplicándolo a la composición en AG de mezcla de aceite soja/girasol, aceite de pescado, mantequilla, usando un programa de temperatura modificado, entre cinco laboratorios. El programa de temperatura elegido, si bien emplea más tiempo, permite separar completamente ácido butírico del solvente, trans-18:1 de cis-18:1, isómeros 20:1 de 18:3 n-3, 22:1 n-9 de 20:4 n-6

  1. Synthesis, extraction and electronic structure of Ce@C2n

    Science.gov (United States)

    Liu, Bing-Bing; Zou, Guang-Tian; Yang, Hai-Bin; Yu, San; Lu, Jin-Shan; Liu, Zi-Yang; Liu, Shu-Ying; Xu, Wen-Guo

    1997-11-01

    In view of the growing interest in endohedral lanthanide fullerenes, Ce, as a typical+ 4 oxidation state lanthanide element, has been systematically studied. The synthesis, extraction and electronic structure of Ce @ C2n are investigated. Soot containing Ce@C2n was synthesized in high yield by carbonizing CeO2-containing graphite rods and are back-burning the CeC2-enriched cathode deposit in a DC arc plasma apparatus. Ce@C2n dominated by Ce@C82, can be efficiently extracted from the insoluble part of the soot after toluene Soxhlet extraction by pyridine at high temperature and high pressure in a closed vessel. About 60% Ce@C2n(2n = 82, 80, 78, 76) and 35% Ce@C82 can be enriched in the pyridine extract. This fact is identified by desorption electron impact mass spectrometry (DEI MS). The electronic structure of Ce@C2n is analyzed by using X-ray photoemission spectroscopy (XPS) of pyridine-free film. It is suggested that the encapsulated Ce atom is in a charge state close to+ 3 and was effectively protected from reaction with water and oxygen by the enclosing fullerene cage. Unlike theoretical expectation, the electronic state of Ce@C82 is formally described as Ce+3@C3-82.

  2. Floridablanca entre la modernidad y la posmodernidad

    OpenAIRE

    Senatore, María Ximena

    2007-01-01

    Este artículo se centra en los diálogos entre el pasado y el presente creados en el marco de la modernidad y de la posmodernidad. La arqueología como práctica social puede ser entendida como un diálogo pasado-presente. Floridablanca es una historia, un sitio, una experiencia, una idea, una utopía. Es también un punto de encuentro entre modernidad y posmodernidad. El objetivo de este trabajo es presentar ciertas reflexiones sobre los diálogos pasado-presente que crean, transforman y reproducen...

  3. Oxidative Ce"3"+ sequestration by fungal manganese oxides with an associated Mn(II) oxidase activity

    International Nuclear Information System (INIS)

    Zheng, Haisu; Tani, Yukinori; Naitou, Hirotaka; Miyata, Naoyuki; Tojo, Fuyumi

    2016-01-01

    Sequestration of Ce"3"+ by biogenic manganese oxides (BMOs) formed by a Mn(II)-oxidizing fungus, Acremonium strictum strain KR21-2, was examined at pH 6.0. In anaerobic Ce"3"+ solution, newly formed BMOs exhibited stoichiometric Ce"3"+ oxidation, where the molar ratio of Ce"3"+ sequestered (Ce_s_e_q) relative to Mn"2"+ released (Mn_r_e_l) was maintained at approximately two throughout the reaction. A similar Ce"3"+ sequestration trend was observed in anaerobic treatment of BMOs in which the associated Mn(II) oxidase was completely inactivated by heating at 85 °C for 1 h or by adding 50 mM NaN_3. Aerobic Ce"3"+ treatment of newly formed BMO (enzymatically active) resulted in excessive Ce"3"+ sequestration over Mn"2"+ release, yielding Ce_s_e_q/Mn_r_e_l > 200, whereas heated or poisoned BMOs released a significant amount of Mn"2"+ with lower Ce"3"+ sequestration efficiency. Consequently, self-regeneration by the Mn(II) oxidase in newly formed BMO effectively suppressed Mn"2"+ release and enhanced oxidative Ce"3"+ sequestration under aerobic conditions. Repeated treatments of heated or poisoned BMOs under aerobic conditions confirmed that oxidative Ce"3"+ sequestration continued even after most Mn oxide was released from the solid phase, indicating auto-catalytic Ce"3"+ oxidation at the solid phase produced through primary Ce"3"+ oxidation by BMO. From X-ray diffraction analysis, the resultant solid phases formed through Ce"3"+ oxidation by BMO under both aerobic and anaerobic conditions consisted of cerianite with crystal sizes of 5.00–7.23 Å. Such nano-sized CeO_2 (CeO_2_,_B_M_O) showed faster auto-catalytic Ce"3"+ oxidation than that on well-crystalized cerianite under aerobic conditions, where the normalized pseudo-first order rate constants for auto-catalytic Ce"3"+ oxidation on CeO_2_,_B_M_O was two orders of magnitude higher. Consequently, we concluded that Ce"3"+ contact with BMOs sequesters Ce"3"+ through two oxidation paths: primary Ce"3

  4. The equiatomic intermetallics REPtCd (RE = La, Ce, Pr, Nd, Eu) and magnetic properties of CeAuCd

    Energy Technology Data Exchange (ETDEWEB)

    Johnscher, Michael; Niehaus, Oliver; Poettgen, Rainer [Muenster Univ. (Germany). Inst. fuer Anorganische und Analytische Chemie; Tappe, Frank [Hochschule Hamm-Lippstadt, Hamm (Germany)

    2015-06-01

    The cadmium intermetallics REPtCd (RE = La, Ce, Pr, Nd, Eu) and CeAuCd were synthesized by induction-melting of the elements in sealed niobium ampoules followed by annealing in muffle furnaces. The samples were characterized by powder X-ray diffraction. The structures of CePtCd (ZrNiAl type, P anti 62m, a = 763.8(6), c = 409.1(4) pm, wR2 = 0.0195, 298 F{sup 2} values, 14 variables) and EuPtCd (TiNiSi type, Pnma, a = 741.3(2), b = 436.4(1), c = 858.0(4) pm, wR2 = 0.0385, 440 F{sup 2} values, 20 variables) were refined from single-crystal data. The REPtCd structures exhibit three-dimensional networks of corner- and edge-sharing Cd rate at Pt{sub 2/6}Pt{sub 2/3} and Cd rate at Pt{sub 4/4} tetrahedra, which leave cages for the rare earth atoms. Temperature-dependent magnetic susceptibility data of CeAuCd reveal a paramagnetic to antiferromagnetic phase transition at T{sub N} = 3.7(5) K.

  5. The equiatomic intermetallics REPtCd (RE = La, Ce, Pr, Nd, Eu) and magnetic properties of CeAuCd

    International Nuclear Information System (INIS)

    Johnscher, Michael; Niehaus, Oliver; Poettgen, Rainer

    2015-01-01

    The cadmium intermetallics REPtCd (RE = La, Ce, Pr, Nd, Eu) and CeAuCd were synthesized by induction-melting of the elements in sealed niobium ampoules followed by annealing in muffle furnaces. The samples were characterized by powder X-ray diffraction. The structures of CePtCd (ZrNiAl type, P anti 62m, a = 763.8(6), c = 409.1(4) pm, wR2 = 0.0195, 298 F 2 values, 14 variables) and EuPtCd (TiNiSi type, Pnma, a = 741.3(2), b = 436.4(1), c = 858.0(4) pm, wR2 = 0.0385, 440 F 2 values, 20 variables) were refined from single-crystal data. The REPtCd structures exhibit three-dimensional networks of corner- and edge-sharing Cd rate at Pt 2/6 Pt 2/3 and Cd rate at Pt 4/4 tetrahedra, which leave cages for the rare earth atoms. Temperature-dependent magnetic susceptibility data of CeAuCd reveal a paramagnetic to antiferromagnetic phase transition at T N = 3.7(5) K.

  6. Crystal growth and scintillation properties of multi-component oxide single crystals: Ce:GGAG and Ce:La-GPS

    Czech Academy of Sciences Publication Activity Database

    Yoshikawa, A.; Kamada, K.; Kurosawa, S.; Shoji, Y.; Yokota, Y.; Chani, V.I.; Nikl, Martin

    2016-01-01

    Roč. 169, Jan (2016), s. 387-393 ISSN 0022-2313. [International Conference on Luminescence and Optical Spectroscopy of Condensed Matter /17./. Wroclaw, 13.07.2014-18.07.2014] Institutional support: RVO:68378271 Keywords : scintillator * luminescent materials * Ce 3+ * radioluminescence Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 2.686, year: 2016

  7. Ethanol Sensor of CdO/Al2O3/CeO2 Obtained from Ce-DOPED Layered Double Hydroxides with High Response and Selectivity

    Science.gov (United States)

    Xu, Dongmei; Guan, Meiyu; Xu, Qinghong; Guo, Ying; Wang, Yao

    2013-04-01

    In this paper, Ce-doped CdAl layered double hydroxide (LDH) was first synthesized and the derivative CdO/Al2O3/CeO2 composite oxide was prepared by calcining Ce-doped CdAl LDH. The structure, morphology and chemical state of the Ce doped CdAl LDH and CdO/Al2O3/CeO2 were also investigated by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), solid state nuclear magnetic resonance (SSNMR), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The gas sensing properties of CdO/Al2O3/CeO2 to ethanol were further studied and compared with CdO/Al2O3 prepared from CdAl LDH, CeO2 powder as well as the calcined Ce salt. It turns out that CdO/Al2O3/CeO2 sensor shows best performance in ethanol response. Besides, CdO/Al2O3/CeO2 possesses short response/recovery time (12/72 s) as well as remarkable selectivity in ethanol sensing, which means composite oxides prepared from LDH are very promising in gas sensing application.

  8. A facile synthesis for cauliflower like CeO2 catalysts from Ce-BTC precursor and their catalytic performance for CO oxidation

    Science.gov (United States)

    Zhang, Xiaodong; Hou, Fulin; Yang, Yang; Wang, Yuxin; Liu, Ning; Chen, Dan; Yang, Yiqiong

    2017-11-01

    The paper presents a novel and facile method for preparing cauliflowerlike CeO2 through direct decomposition of cerium based metal-organic framework (MOF) Ce-BTC (BTC = 1,3,5-benzenetricarboxylic acid) straw in air. Several analytical tools such as Scanning electron microscopy (SEM), X-ray diffraction (XRD), Thermogravimetric (TG), N2 adsorption-desorption, Temperature programmed reduction (TPR), Raman, X-ray photoelectron spectroscopic (XPS) and Photoluminescence (PL) have been used to characterize Ce-BTC and CeO2. The Ce-BTC calcined at 500 °C (CeO2-500) maintains the morphology of its template ;Ce-BTC; and forms a special cauliflower-like structure. XRD patterns showed that the catalyst has a perfect CeO2 crystal structure and has a smaller particle size. The prepared CeO2 cauliflowers exhibit excellent catalytic activities, long-term stability, and cycling stability for CO oxidation. The improved catalytic activities could be attributed to porous nanorods of CeO2 cauliflowers, which provide more active sites and oxygen vacancy for CO oxidation.

  9. Analyse de régression quantile de la relation entre la langue et l’intervalle entre les grossesses au Québec (Canada

    Directory of Open Access Journals (Sweden)

    Nathalie Auger

    2018-01-01

    Full Text Available Introduction. On sait que les intervalles courts comme les intervalles longs entre les grossesses sont associés à des issues périnatales défavorables, comme des fausses couches et des accouchements prématurés, mais les différences culturelles à ce sujet sont mal connues. Repérer les inégalités culturelles dans les intervalles entre les grossesses est nécessaire afin d'améliorer les résultats relatifs à la santé de la mère et de l’enfant. Nous avons ainsi évalué les intervalles entre les grossesses chez les anglophones et les francophones du Québec. Méthodologie. Nous avons obtenu les dossiers de naissance de tous les enfants nés au Québec entre 1989 et 2011. Nous avons recensé 571 461 femmes ayant eu au moins deux naissances et déterminé l’intervalle entre leurs grossesses. Les intervalles courts entre les grossesses (moins de 18 mois ont été définis comme étant le 20e percentile de la distribution, et les intervalles longs (60 mois ou plus, comme le 80e percentile. À l’aide de régressions quantiles, nous avons évalué l’association entre la langue et les intervalles courts et longs, ajustés en fonction des caractéristiques de la mère. Nous avons évalué les différences au fil du temps et selon l’âge de la mère pour les groupes défavorisés, qui ont été définis par l’absence de diplôme d’études secondaires, la résidence en milieu rural et le fait de vivre dans un quartier défavorisé matériellement. Résultats. Dans les modèles de régression ajustés, les anglophones sans diplôme d’études secondaires avaient des intervalles plus courts de 1,0 mois (intervalle de confiance [IC] à 95 % : −1,5 à −0,4 par rapport à leurs homologues francophones au 20e percentile de la distribution et plus longs de 1,9 mois (−0,5 à 4,3 au 80e percentile. Les résultats étaient similaires pour les anglophones des régions rurales et des quartiers matériellement défavorisés. Les

  10. Toxicity of inhaled 144CeCl3 in beagle dogs

    International Nuclear Information System (INIS)

    Muggenburg, B.A.; Hahn, F.F.; Boecker, B.B.; McClellan, R.O.; Pickrell, J.A.

    1980-01-01

    The metabolism, dosimetry and effects of inhaled 144 CeCl 3 in beagle dogs are being studied to assess the biological consequences of inhaling 144 Ce. Studies have shown that the 144 Ce deposited in the lung as 144 CeCl 3 is translocated at a moderately rapid rate to liver and skeleton and that significant radiation doses are accumulated by all three organs. Fifty-five dogs that inhaled 144 CeCl 3 and 17 control dogs are being observed for their life span. The 144 Ce-exposed dogs had long-term retained burdens that ranged from 2.6 to 360 μCi 144 Ce/kg body weight. Fifty-three of the dogs exposed to 144 CeCl 3 have died and twelve control dogs have died. Serial observations are continuing on the two surviving exposed dogs and five control dogs

  11. Effect of Ce on performance and physicochemical properties of Pt-containing automotive emission control catalysts

    International Nuclear Information System (INIS)

    Nunan, J.G.; Silver, R.G.; Bradley, S.A.

    1992-01-01

    Present-day automotive emission control catalysts contain noble metals such as Pt, Pd and Rh all on an alumina support with a variety of promoters. Ce is one of the most important promoters. In this paper, the interaction between Pt and Ce is studied using TPR and STEM on a variety of catalysts. The degree of Pt/Ce interaction is increased by decreasing CeO 2 crystallite size, and to a lesser extent by increasing CeO 2 loading. Direct Pt/Ce interaction leads to a synergistic reduction of both Pt and surface Ce. This reduction qualitatively correlates with catalyst performance after activation in a reducing gas. It is proposed that this synergistic reduction of Pt and Ce is associated with observed improvements in catalyst performance using a non-oscillating exhaust gas

  12. Anisotropic p-f mixing mechanism explaining anomalous magnetic properties in Ce monopnictides

    International Nuclear Information System (INIS)

    Takahashi, H.; Kasuya, T.

    1985-01-01

    An anomalously small crystal-field splitting in the paramagnetic region in CeSb and CeBi compared with those in CeP and CeAs is explained by the mixing mechanism between the occupied 4f states and the valence band holes. In the paramagnetic regions, the above p-f mixing gives the effective crystal-field splitting, which is estimated to nearly cancel the normal splittings extrapolated from CeP and CeAs in good agreement with experiment. The formula for the second-order transition temperature, at which the population ratio of the 4f GAMMA 8 states begins to be unbalanced, is also derived. In CeBi the second-order transition may occur, while in CeSb the first-order transition should occur in agreement with experiments. (author)

  13. Fermi-surface topology of the heavy-fermion system Ce2PtIn8

    Science.gov (United States)

    Klotz, J.; Götze, K.; Green, E. L.; Demuer, A.; Shishido, H.; Ishida, T.; Harima, H.; Wosnitza, J.; Sheikin, I.

    2018-04-01

    Ce2PtIn8 is a recently discovered heavy-fermion system structurally related to the well-studied superconductor CeCoIn5. Here we report on low-temperature de Haas-van Alphen-effect measurements in high magnetic fields in Ce2PtIn8 and Pr2PtIn8 . In addition, we performed band-structure calculations for localized and itinerant Ce-4 f electrons in Ce2PtIn8 . Comparison with the experimental data of Ce2PtIn8 and of the 4 f -localized Pr2PtIn8 suggests the itinerant character of the Ce-4 f electrons. This conclusion is further supported by the observation of effective masses in Ce2PtIn8 , which are strongly enhanced with up to 26 bare electron masses.

  14. Down-conversion luminescence from (Ce, Yb) co-doped oxygen-rich silicon oxides

    International Nuclear Information System (INIS)

    Heng, C. L.; Wang, T.; Su, W. Y.; Wu, H. C.; Yin, P. G.; Finstad, T. G.

    2016-01-01

    We have studied down-conversion photoluminescence (PL) from (Ce, Yb) co-doped “oxygen rich” silicon oxide films prepared by sputtering and annealing. The Ce"3"+ ∼510 nm PL is sensitive to the Ce concentration of the films and is much stronger for 3 at. % Ce than for 2 at. % Ce after annealing at 1200 °C. The PL emission and excitation spectroscopy results indicate that the excitation of Yb"3"+ is mainly through an energy transfer from Ce"3"+ to Yb"3"+, oxide defects also play a role in the excitation of Yb"3"+ after lower temperature (∼800 °C) annealing. The Ce"3"+ 510 nm photon excites mostly only one Yb"3"+ 980 nm photon. Temperature-dependent PL measurements suggest that the energy transfer from Ce"3"+ to Yb"3"+ is partly thermally activated.

  15. The investigation of Ce doped ZnO crystal: The electronic, optical and magnetic properties

    Science.gov (United States)

    Wen, Jun-Qing; Zhang, Jian-Min; Qiu, Ze-Gang; Yang, Xu; Li, Zhi-Qin

    2018-04-01

    The electronic, optical and magnetic properties of Ce doped ZnO crystal have been studied by using first principles method. The research of formation energies show that Ce doped ZnO is energetically stable, and the formation energies reduce from 6.25% to 12.5% for Ce molar percentage. The energy band is still direct band gap after Ce doped, and band gap increases with the increase of Cesbnd Ce distance. The Fermi level moves upward into conduction band and the DOS moves to lower energy with the increase of Ce concentration, which showing the properties of n-type semiconductor. The calculated optical properties imply that Ce doped causes a red-shift of absorption peaks, and enhances the absorption of the visible light. The transition from ferromagnetic to antiferromagnetic has been found in Ce doped ZnO.

  16. Epidemia de dengue em Fortaleza, Ceará: inquérito soro-epidemiológico aleatório Dengue epidemic in a Northeastern Brazil: random epidemiological serum survey

    Directory of Open Access Journals (Sweden)

    Pedro F. C. Vasconcelos

    1998-10-01

    Full Text Available OBJETIVO: Seguindo-se à epidemia de dengue (DEN, em 1994, em Fortaleza, Ceará, causada pelo sorotipo 2 (DEN-2, realizou-se inquérito soro-epidemiológico aleatório para avaliar e dimensionar o impacto da mesma e a prevalência do dengue por distrito sanitário. MÉTODO: Foi aplicado questionário contendo informações gerais, condições socio-econômicas, informações sobre o quadro clínico e tempo de doença. A amostra foi calculada para estimar uma prevalência de 20%, com erro relativo de 10%, e intervalo de confiança de 95% (erro a de 5%. O sorteio e as análises foram realizadas por meio de computador usando programas apropriados. RESULTADOS E CONCLUSÕES: Foram colhidas 1.341 amostras de soro de 9 distritos sanitários, testadas por inibição da hemaglutinação, sendo classificadas como negativas e positivas (respostas primária - RP e secundária - RS. Foram reativas 588 (44% amostras, sendo 93 (7% RP e 495 (37% RS. A prevalência global em Fortaleza variou de 21% a 71%. Houve 41% (243/588 de infecções assintomáticas (IA e 59% (346/588 sintomáticas (IS. Não houve diferença da prevalência quanto ao sexo, faixa etária e escolaridade, ao contrário da condição socioeconômica que apresentou diferenças estatisticamente significantes (p OBJECTIVE: A seroepidemiological random survey was carried out in Fortaleza city, State of Ceará, Brazil, following an epidemic of dengue virus type 2 (DEN 2, with the purpose of evaluating the frequency of clinical manifestations (signs and symptoms and the prevalence of dengue infection. METHOD: A questionnaire calling for information on address, sex, age, clinical, epidemiological and economic status was applied to the population, followed by venupuncture collection of 5-10 ml of blood for testing by hemagglutination-inhibition (HI. The sample was calculated to obtain a prevalence of 20% with relative risk of 10% and confidence interval of 95%. All information obtained was analyzed by

  17. Impacto do programa de atenção integral à criança com asma em Unidade de Saúde na Cidade de Fortaleza, Ceará

    Directory of Open Access Journals (Sweden)

    Joelma Aurélio Sousa

    2016-12-01

    Full Text Available Nas últimas décadas, a asma tornou-se um importante problema de saúde pública, visto o significativo crescimento da prevalência e da mortalidade dessa doença. Desde 1996, as entidades médicas e governamentais promoveram a criação de consensos sobre o assunto com o objetivo de programar medidas para melhorar a assistência médica e reduzir a morbimortalidade dessa enfermidade. Objetivou-se avaliar a melhora clínica dos pacientes e correlacioná-la à adesão ao tratamento medicamentoso e/ou ambiental. Foi realizado estudo documental retrospectivo descritivo analítico, com dados coletados em prontuários de pacientes que participaram do PROAICA na Unidade de Saúde Lineu Jucá, em Fortaleza-Ceará, no período de 2009 a 2014. Esses dados foram armazenados e processados usando o programa Epi Info 7.0. Observou-se melhora clínica dos pacientes após o inicio da participação no programa, assim como melhora na classificação de gravidade da asma quando se compara a primeira à ultima consulta médica. Houve aumento de 28,06% nos pacientes classificados como intermitente, redução de 20,15% dos casos persistentes leves e diminuição de 10,79% nos classificados como persistente moderado. No entanto, ocorreu um aumento de 2,88% de pacientes graves. Verificou-se melhora na classificação de controle clinico nos pacientes com classificação parcialmente controlada e não controlada. Os dados analisados mostram a importância do programa e sua colaboração para o controle da asma, facilitando a melhor visualização das dificuldades ainda encontradas em sua implementação de modo a promover possíveis mudanças para garantir um melhor atendimento e maior efetividade do PROAICA.Impact of comprehensive care program for children with asthma in Health Unit in the City of Fortaleza, CearáAbstract: Introduction: In recent decades, asthma has become an important public health problem, since the significant growth of the prevalence and

  18. Myxomycetes da Chapada do Araripe (Crato - CE, Brasil Myxomycetes from Chapada do Araripe (Crato, CE, Brazil

    Directory of Open Access Journals (Sweden)

    Laise de Holanda Cavalcanti

    1998-12-01

    Full Text Available Foi efetuado um levantamento dos Myxomyeetes ocorrentes em área de floresta no município do Crato, CE (7º13'53" S; 39º24'28'' W; Alt. 422m, assinalando-se as seguintes famílias e gêneros: Ceratiomyxaceae (Ceratiomyxa, 1 sp.; Cribrariaceae (Cribraria, lsp., Dictydium, 1 sp.; Didymiaceae (Didymium, 2sp.; Enteridiaceae (Dicrydiaethalium, 1sp.; Physaraceae (Badhamia, 2sp., Fuligo, 2sp., Physarum, 5sp.; Steinonitaceae (Comatricha, 3sp., Sfemonitis, 6sp.; Trichiaceae (Arcyria, 3sp., Hemitrichia, 2sp., Periclwena, 1 sp.- Constatou-se preferência das espécies para frutificar em troncos mortos de dicotiledôneas, seguindo-se restos de palmeiras e folhedo. O levantamento eleva para 30 o número de espécies referidas para o Ceará. Uma família e 19 espécies são novos registros para o Estado e Arcyria magna var. rosea Rex é nova referência para o Brasil. São apresentados comentários, chave de identificação e distribuição geográfica das espécies no Nordeste do Brasil.A survey on Myxomycetes was made in the woods of Crato Municipality. State of Ceará, Brazil (7º13'53" S; 39º24,28" W; Alt. 422m. when the following families and genera were registered: Ceratiomyxaceae (Ceratiomyxa, 1 sp.; Cribrariaceae (Cribraria, 1 sp., Dictydium. 1 sp.; Didymiaceae (Didymium, 2sp.; Enteridiaceae Dictydiaethalium, 1 sp.; Physaraceae (Badhamia. 2sp., Fuligo, 2sp., Physarum, 5sp.; Stemonitaceae Comatricha, 3sp., Stemonitis, 6sp.; Trichiaceae (Arcyria, 3sp., Hemitrichia, 2sp., Perichaena, lsp..The species sporulated mostly on dead dicotyledones wood, followed by monocotyledones (Arecaceae debris and litter. The survey raises the number of registers referred to the State of Ceará to 30 species. One family and 19 species are new records for that State while Arcyria magna var. rosea Rex represents a new record for Brazil. Key for the species, comments and geographical distribution in Northeast Brazil arc presented.

  19. Responsabilidad extracontractual y contractual: barrera entre ambas

    Directory of Open Access Journals (Sweden)

    González Hernández, Rut

    2013-01-01

    Full Text Available La finalidad que persigue el sistema de responsabilidad civiles el resarcimiento del daño causado con independencia de que proceda la responsabilidad contractual o la extracontractual, coexistiendo ambas en nuestro ordenamiento jurídico y resultando en ocasiones complicado discernir la frontera entre una y otra.

  20. Les relations entre attentes, valeur, buts, engagement cognitif et engagement comportemental dans un MOOC

    Directory of Open Access Journals (Sweden)

    Bruno Poellhuber

    2016-01-01

    Full Text Available Dans le présent article, nous nous intéressons aux relations entre attentes, valeur, buts et engagement dans un MOOC universitaire de l’initiative Edulib. À partir d’une perspective théorique globale fondée sur l’autorégulation et en utilisant un modèle de motivation sociocognitif des attentes et de la valeur (Pintrich, 2003, nous analysons les liens entre motivation et engagement. Pour ce faire, nous utilisons les données de 531 répondants à un questionnaire distribué aux participants d’un MOOC de l’initiative Edulib (HEC Montréal portant sur l’introduction au marketing, offert à l’automne 2014. Une analyse par correspondances multiples sur les activités rapportées nous a permis de concevoir un score composite d’engagement comportemental. Par la suite, nous utilisons une approche d’équations structurelles pour tester le modèle théorique, après avoir opérationnalisé tous les liens anticipés entre les différentes variables. Nos résultats suggèrent un modèle acceptable qui confirme plusieurs des prévisions théoriques. Ainsi, la valeur est liée aussi bien aux buts extrinsèques qu’aux buts intrinsèques, mais les buts intrinsèques sont beaucoup plus fortement liés à l’engagement cognitif que les buts extrinsèques. Toutefois, aucune relation significative n’est observée entre l’engagement cognitif et l’engagement comportemental, ce qui soulève des questions de mesure, mais aussi des questions de nature théorique pour une clientèle d’adultes participant à un MOOC.

  1. LE LIEN ENTRE FINANCE ET ECONOMIE ISLAMIQUES VIA LE MODELE PRINCIPIEL "ZR"

    OpenAIRE

    BELABES, ABDERRAZAK

    2010-01-01

    A l'heure où certains évoquent l'intégration de la finance islamique à la finance globale, et d'autres rattachent la finance islamique à des thèmes en vogue telles que la finance éthique, la finance participative ou la finance socialement responsable, le présent papier explore le lien entre finance et économie islamiques à partir du modèle principiel "ZR", c’est-à-dire "Zakât" et "Ribâ". Ce modèle montre que les principes invariants de Zakât et Ribâ jouent un rôle central dans l’établissement...

  2. Redox behavior of Ce(IV)/Ce(III) in the presence of nitrilotriacetic acid: a surrogate study for An(IV)/An(III) redox behavior

    International Nuclear Information System (INIS)

    Suzuki, Y.; Nankawa, T.; Ohnuki, T.; Francis, A.J.

    2010-01-01

    Using cyclic voltammetry, we investigated the redox behavior of Ce(IV)/Ce(III), which is a surrogate for An(IV)/An(III) (An = actinides), in a solution of nitrilotriacetic acid (NTA) at 25 C. The cyclic voltammogram of Ce in a 0.1 M NTA solution at pH 6 showed a reversible one-electron redox reaction for Ce(IV)/Ce(III) at 0.51 V vs. Ag/AgCl. This redox potential was much lower than that obtained in 1 M nitric acid, indicating that Ce(IV) was preferentially stabilized by complexation with NTA. The redox potential in the NTA solution was independent of the Ce concentration from 2 to 20 mM, NTA concentration from 5 to 200 mM and pH between 3 and 7. These results indicated that no polymerization and no additional coordination of NTA and OH to the Ce(III)-NTA complex took place during the redox reaction. As the speciation calculation of Ce(III) in the NTA solution showed that the predominant species was Ce III (nta) 2 3 (H 3 nta = NTA), the redox reaction of the Ce-NTA complex was expressed by the following: Ce IV (nta) 2 2- + e - ↔ Ce III (nta) 2 3 . The logarithm of the stability constant of Ce IV (nta) 2 2- was calculated to be 38.6 ± 0.8 for I = 0 from the redox potential shift of Ce(IV)/Ce(III) in the NTA solution. The value was in good accordance with the stability constant of the Np IV (nta) 2 2- complex, demonstrating that the aqueous coordination chemistry of Ce(IV) with NTA is quite similar to that of An(IV). These results strongly suggest that a negative shift of the Pu(IV)/Pu(III) redox potential in the NTA solution should make Pu(IV) more stable than Pu(III) even in a reducing environment. (orig.)

  3. Structure and phase composition of Al-Ce-Cu system alloys in range of quasi-binary Al-Al8CeCu4 section

    International Nuclear Information System (INIS)

    Belov, N.A.; Khvan, A.V.

    2007-01-01

    The phase diagram of the Al-Cu-Ce system in the quasibinary section area of Al-Al 8 CeCu 4 has been investigated by metallographic, thermal, micro-X-ray spectral and X-ray structural analyses. The parameters of the eutectic reaction L→(Al)+CeCu 4 Al 8 : T=610 Deg C were found out; the composition was 14% Cu and 7% Ce. This eutectics is of a disperse structure and the ternary compound contained is capable of fragmentation and spheroidizing in the heating process (starting from 540 Deg C). It was demonstrated that the area of optimal (Al)+CeCu 4 Al 8 eutectics-based alloy compositions was within the narrow limits. That is related to the fact that at a comparatively little variation of the Cu:Ce=2 ratio solidus sharply decreases and, as a result, the crystallization interval considerably extends [ru

  4. Luminescence and Tb3+-Ce3+-Eu3+ ion energy transfer in single-crystalline films of Tb3Al5O12:Ce,Eu garnet

    International Nuclear Information System (INIS)

    Zorenko, Y.; Gorbenko, V.; Voznyak, T.; Batentschuk, M.; Osvet, A.; Winnacker, A.

    2008-01-01

    The paper is devoted to investigation of the processes of excitation energy transfer between the host cations (Tb 3+ ions) and the activators (Ce 3+ and Eu 3+ ions) in single-crystalline films of Tb 3 Al 5 O 12 :Ce,Eu (TbAG:Ce,Eu) garnet which is considered as a promising luminescent material for the conversion of LED's radiation. The cascade process of excitation energy transfer is shown to be realized in TbAG:Ce,Eu: (i) from Tb 3+ ions to Ce 3+ and Eu 3+ ions; (ii) from Ce 3+ ions to Eu 3+ ions by means of dipole-dipole interaction and through Tb 3+ ion sublattice

  5. Heteroaggregation, transformation and fate of CeO2 nanoparticles in wastewater treatment

    International Nuclear Information System (INIS)

    Barton, Lauren E.; Auffan, Melanie; Olivi, Luca; Bottero, Jean-Yves; Wiesner, Mark R.

    2015-01-01

    Wastewater Treatment Plants (WWTPs) are a key pathway by which nanoparticles (NPs) enter the environment following release from NP-enabled products. This work considers the fate and exposure of CeO 2 NPs in WWTPs in a two-step process of heteroaggregation with bacteria followed by the subsequent reduction of Ce(IV) to Ce(III). Measurements of NP association with solids in sludge were combined with experimental estimates of reduction rate constants for CeO 2 NPs in Monte Carlo simulations to predict the concentrations and speciation of Ce in WWTP effluents and biosolids. Experiments indicated preferential accumulation of CeO 2 NPs in biosolids where reductive transformation would occur. Surface functionalization was observed to impact both the distribution coefficient and the rates of transformation. The relative affinity of CeO 2 NPs for bacterial suspensions in sludge appears to explain differences in the observed rates of Ce reduction for the two types of CeO 2 NPs studied. - Highlights: • We combine experimental and computational methods to track CeO 2 NPs through WWTPs. • We investigate the importance of environmental transformations on NP exposure. • We estimate the concentrations of CeO 2 NPs and reductive transformation byproducts. - CeO 2 nanoparticles that are released to the waste stream will preferentially associate with the solid phase (∼96%), where they will undergo significant transformation (∼50%)

  6. Homogeneously dispersed CeO2 nanoparticles on exfoliated hexaniobate nanosheets

    Science.gov (United States)

    Marques, Thalles M. F.; Strayer, Megan E.; Ghosh, Anupama; Silva, Alexandre; Ferreira, Odair P.; Fujisawa, Kazunori; Alves da Cunha, Jose R.; Abreu, Guilherme J. P.; Terrones, Mauricio; Mallouk, Thomas E.; Viana, Bartolomeu C.

    2017-12-01

    Hexaniobate nanosheets derived from the parent compound K4Nb6O17 have been decorated with CeO2 nanoparticles by ion exchange with aqueous cerium (IV) solution. Very homogeneous CeO2 nanoparticle decoration of the hexaniobate sheets can be achieved by this method and the resulting composites may absorb visible light. HRTEM images show that ∼3.0 nm diameter CeO2 nanoparticles adhere to hexaniobate nanosheets that are exfoliated and then restacked prior to Ce deposition. The interfacial interaction between CeO2 nanoparticles and nanosheets would be due to an electrostatic attraction mechanism. Raman and XRD measurements have given strong evidence that CeO2 nanoparticles have fluorite structure. EDS, FTIR and XPS results suggest almost complete exchange of TBA+ and K+ by Ce4+. Cerium ion exchange on the acid exchanged parent compound, H2.9K1.1Nb6O17, revealed that the extent of Ce ion exchange is much greater in case of nanosheets, which may be rationalized by the larger surface area available after exfoliation. XPS measurements show that the ratio of Ce4+/Ce3+ is around 4.4, in agreement with the formation of fluorite structure (CeO2). Thus, these CeO2 nanoparticle/nanosheet composites may be useful for catalytic processes.

  7. Raman spectroscopic studies on CeVO4 at high pressures

    International Nuclear Information System (INIS)

    Rao, Rekha; Garg, Alka B.; Wani, B.N.

    2011-01-01

    Raman scattering investigations of CeVO 4 at high pressures is reported. Polycrystalline CeVO 4 was prepared by solid state reaction of CeO 2 and V 2 O 5 . High pressure Raman spectroscopic measurements were carried out as per experimental details given

  8. SP@CE - An SP-based programming model for consumer electronics streaming applications

    NARCIS (Netherlands)

    Varbanescu, Ana Lucia; Nijhuis, Maik; Escribano, Arturo González; Sips, Henk; Bos, Herbert; Bal, Henri

    2007-01-01

    Efficient programming of multimedia streaming applications for Consumer Electronics (CE) devices is not trivial. As a solution for this problem, we present SP@CE, a novel programming model designed to balance the specific requirements of CE streaming applications with the simplicity and efficiency

  9. Resenha visual - uma entre tantas transgressões possíveis

    Directory of Open Access Journals (Sweden)

    Maria Leticia Rauen Vianna

    2001-11-01

    Full Text Available Cet article présente un compte rendue sur !e livre A Ilusão Especular de Arlindo Machado. Pourtant, comrne compte rendue, il est différent de ceux-là dites académiques traditionnels. Au lieu de quelques pages en présentant, décrivant de façon critique le livre a un lecteur probable, celui-ci, d'un prédominant caractere visuel, a été réalisé en rapprochant des fragment du dessin de la couverture du livre et fragments du texte de l'auteur. Des autres textes, qu'on voit en haut de chaque page, retirés du livre Como fazer uma Monografia de Délcio Vieira Salomon, on la fonction d'épigraphes, au même temps que définissent, donnant de explications et des éclaircissements sur ce que soit un compte rendue classique. D' autre coté, quelques f ois, ils misent en évidence la contradiction entre ceux-là discursives et celui-ci foulé en la visual i ation. Ce compte rendue visuel est, finalement, le résultat d'une "transgression poétique" prise par son auteur.

  10. Comment on “Synthesis of ceria (CeO_2 and CeO_2_−_x) nanoparticles via decarbonation and Ce(III) oxidation of synthetic bastnaesite (CeCO_3F)” by Montes-Hernandez et al

    International Nuclear Information System (INIS)

    Gysi, Alexander P.; Williams-Jones, Anthony E.

    2016-01-01

    Montes-Hernandez et al. [5] recently reported results of a study of the decarbonation of fine-grained synthetic bastnäsite-(Ce) precipitates involving the oxidation of Ce(III) to Ce(IV) and the formation of ceria (CeO_2 and CeO_2_-_x with oxygen vacancies) nano-particles. The purpose of their study was to show that oxidation of Ce(III) to Ce(IV) occurs spontaneously during heating of bastnäsite-(Ce) in air, a vacuum, N_2 or Ar gas. However, their interpretation of the formation of CeO_2 is not supported by the findings of Gysi and Williams-Jones [3], who showed that natural bastnäsite-(Ce) decomposes to form rare earth element (REE) oxyfluorides (REEOF). The latter was documented using differential scanning calorimetric (DSC) and thermogravimetric (TGA) experiments under a deoxygenated N_2 atmosphere. In their experiments, Gysi and Williams-Jones [3] found no evidence for the oxidation of Ce(III) to Ce(IV). This raises the question of whether the experiments of Montes-Hernandez et al. [5] in a N_2 atmosphere (and by extension in an Ar atmosphere) were compromised because of contamination by O_2 and that, as a result, they reached the erroneous conclusion that Ce(III) oxidizes spontaneously to Ce(IV) during heating of bastnäsite-(Ce) under these conditions. In order to explain the disagreement between their findings and those of Gysi and Williams-Jones [3], Montes-Hernandez et al. [5], proposed that the X-ray diffraction data of the former study were incorrectly interpreted. Here, we provide further evidence that the natural bastnäsite-(Ce) employed in the study by Gysi and Williams-Jones [3] decomposed to form REE oxyfluorides (i.e., CeOF, LaOF, PrOF and NdOF) and not CeO_2, and supply explanations for why Montes-Hernandez et al. [5] erroneously concluded that CeO_2 is produced during decomposition of this mineral under N_2 and Ar atmospheres. In so doing, we hope to provide new insights into the decomposition of bastnäsite-(Ce) that will help guide future

  11. Comment on “Synthesis of ceria (CeO{sub 2} and CeO{sub 2−x}) nanoparticles via decarbonation and Ce(III) oxidation of synthetic bastnaesite (CeCO{sub 3}F)” by Montes-Hernandez et al

    Energy Technology Data Exchange (ETDEWEB)

    Gysi, Alexander P., E-mail: agysi@mines.edu [Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO, 80401 (United States); Williams-Jones, Anthony E. [Department of Earth and Planetary Sciences, McGill University, 3450 University Street, Montreal, QC, Canada, H3A 2A7 (Canada)

    2016-11-01

    Montes-Hernandez et al. [5] recently reported results of a study of the decarbonation of fine-grained synthetic bastnäsite-(Ce) precipitates involving the oxidation of Ce(III) to Ce(IV) and the formation of ceria (CeO{sub 2} and CeO{sub 2-x} with oxygen vacancies) nano-particles. The purpose of their study was to show that oxidation of Ce(III) to Ce(IV) occurs spontaneously during heating of bastnäsite-(Ce) in air, a vacuum, N{sub 2} or Ar gas. However, their interpretation of the formation of CeO{sub 2} is not supported by the findings of Gysi and Williams-Jones [3], who showed that natural bastnäsite-(Ce) decomposes to form rare earth element (REE) oxyfluorides (REEOF). The latter was documented using differential scanning calorimetric (DSC) and thermogravimetric (TGA) experiments under a deoxygenated N{sub 2} atmosphere. In their experiments, Gysi and Williams-Jones [3] found no evidence for the oxidation of Ce(III) to Ce(IV). This raises the question of whether the experiments of Montes-Hernandez et al. [5] in a N{sub 2} atmosphere (and by extension in an Ar atmosphere) were compromised because of contamination by O{sub 2} and that, as a result, they reached the erroneous conclusion that Ce(III) oxidizes spontaneously to Ce(IV) during heating of bastnäsite-(Ce) under these conditions. In order to explain the disagreement between their findings and those of Gysi and Williams-Jones [3], Montes-Hernandez et al. [5], proposed that the X-ray diffraction data of the former study were incorrectly interpreted. Here, we provide further evidence that the natural bastnäsite-(Ce) employed in the study by Gysi and Williams-Jones [3] decomposed to form REE oxyfluorides (i.e., CeOF, LaOF, PrOF and NdOF) and not CeO{sub 2}, and supply explanations for why Montes-Hernandez et al. [5] erroneously concluded that CeO{sub 2} is produced during decomposition of this mineral under N{sub 2} and Ar atmospheres. In so doing, we hope to provide new insights into the decomposition of

  12. Gamma-ray relative energy response of Ce: YAG crystal

    International Nuclear Information System (INIS)

    Zhang Jianhua; Zhang Chuanfei; Hu Mengchun; Peng Taiping; Wang Zhentong; Tang Dengpan; Zhao Guangjun

    2010-01-01

    Gamma-ray relative energy response of Ce: YAG crystal, which is important for pulsed γ-ray measurement, was studied in this work.The Ce: YAG crystal, which was developed at Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, was aligned point by point with γ-rays scattered from an industrial 60 Co line source. The γ-ray relative energy response was calculated using the mass attenuation coefficient. The results show that the numerical calculation method of γ-ray relative energy response is reliable, and the experimental method with multi-energy point γ-ray by Compton scattering is also feasible, that can be used for checking up correctness of the numerical calculation results. (authors)

  13. Identification and Quality Assessment of Chrysanthemum Buds by CE Fingerprinting

    Directory of Open Access Journals (Sweden)

    Xiaoping Xing

    2015-01-01

    Full Text Available A simple and efficient fingerprinting method for chrysanthemum buds was developed with the aim of establishing a quality control protocol based on biochemical makeup. Chrysanthemum bud samples were successively extracted by water and alcohol. The fingerprints of the chrysanthemum buds samples were obtained using capillary electrophoresis and electrochemical detection (CE-ED employing copper and carbon working electrodes to capture all of the chemical information. 10 batches of chrysanthemum buds were collected from different regions and various factories to establish the baseline fingerprint. The experimental data of 10 batches electropherogram buds by CE were analyzed by correlation coefficient and the included angle cosine methods. A standard chrysanthemum bud fingerprint including 24 common peaks was established, 12 from each electrode, which was successfully applied to identify and distinguish between chrysanthemum buds from 2 other chrysanthemum species. These results demonstrate that fingerprint analysis can be used as an important criterion for chrysanthemum buds quality control.

  14. Recent approaches for enhancing sensitivity in enantioseparations by CE.

    Science.gov (United States)

    Sánchez-Hernández, Laura; García-Ruiz, Carmen; Luisa Marina, María; Luis Crego, Antonio

    2010-01-01

    This article reviews the latest methodological and instrumental improvements for enhancing sensitivity in chiral analysis by CE. The review covers literature from March 2007 until May 2009, that is, the works published after the appearance of the latest review article on the same topic by Sánchez-Hernández et al. [Electrophoresis 2008, 29, 237-251]. Off-line and on-line sample treatment techniques, on-line sample preconcentration strategies based on electrophoretic and chromatographic principles, and alternative detection systems to the widely employed UV/Vis detection in CE are the most relevant approaches discussed for improving sensitivity. Microchip technologies are also included since they can open up great possibilities to achieve sensitive and fast enantiomeric separations.

  15. 101Ru NQR study in superconducting CeRu2

    International Nuclear Information System (INIS)

    Matsuda, Kazuyuki; Kohori, Yoh; Kohara, Takao

    1995-01-01

    We present measurements of the NQR spectrum and the nuclear spin lattice relaxation rate, 1/T 1 , of 101 Ru in superconducting CeRu 2 from 1.9 K to 10 K. From the NQR spectrum, the electric quadrupole interaction parameters were determined to be ν Q =13.2 MHz and η=0.1/T 1 varies in proportion to temperature in the normal state, and has the Hebel-Slichter coherence peak just below the superconducting transition temperature, T C , of 6.2 K, and decreases exponentially at low temperatures with the energy gap of 2Δ=4.0k B T C . 101 Ru NQR study indicates that CeRu 2 is an s-wave and strong-coupling superconductor. (author)

  16. TRX and UO2 criticality benchmarks with SAM-CE

    International Nuclear Information System (INIS)

    Beer, M.; Troubetzkoy, E.S.; Lichtenstein, H.; Rose, P.F.

    1980-01-01

    A set of thermal reactor benchmark calculations with SAM-CE which have been conducted at both MAGI and at BNL are described. Their purpose was both validation of the SAM-CE reactor eigenvalue capability developed by MAGI and a substantial contribution to the data testing of both ENDF/B-IV and ENDF/B-V libraries. This experience also resulted in increased calculational efficiency of the code and an example is given. The benchmark analysis included the TRX-1 infinite cell using both ENDF/B-IV and ENDF/B-V cross section sets and calculations using ENDF/B-IV of the TRX-1 full core and TRX-2 cell. BAPL-UO2-1 calculations were conducted for the cell using both ENDF/B-IV and ENDF/B-V and for the full core with ENDF/B-V

  17. Size effect on magnetic ordering in Ce3Al11

    International Nuclear Information System (INIS)

    Wang, C.R.; Chen, Y.Y.; Neeleshwar, S.; Ou, M.N.; Ho, J.C.

    2003-01-01

    To study the size dependence of magnetic ordering, magnetic measurements have been made between 1.8 and 300 K on Ce 3 Al 11 particles having an average particle size of 1400 A. The nanoparticles were single phase as confirmed by X-ray diffraction. At low temperatures a ferromagnetic transition occurs at T C =6.2 K, which is the same as that for the bulk material. On the other hand, the antiferromagnetic transition at T N =3.2 K for the bulk material is not visible down to 1.8 K. Meanwhile, the slightly smaller Curie constant of nanoparticles as compared to that of the bulk indicates a certain degree of demagnetization of Ce ions when the particle size is sufficiently reduced

  18. The high-pressure phase of CePtAl

    International Nuclear Information System (INIS)

    Heymann, Gunter; Heying, Birgit; Rodewald, Ute C.; Janka, Oliver; Univ. Oldenburg

    2017-01-01

    The intermetallic aluminum compound HP-CePtAl was synthesized by arc melting of the elements with subsequent high-pressure/high-temperature treatment at 1620 K and 10.5 GPa in a multianvil press. The compound crystallizes in the hexagonal MgZn_2-type structure (P6_3/mmc) with lattice parameters of a=552.7(1) and c=898.8(2) pm refined from powder X-ray diffraction data. With the help of single crystal investigations (wR=0.0527, 187 F"2 values, 13 variables), the proposed structure type was confirmed and the mixed Pt/Al site occupations could be refined. Magnetic susceptibility measurements showed a disappearance of the complex magnetic ordering phenomena, which are observed in NP-CePtAl.

  19. The high-pressure phase of CePtAl

    Energy Technology Data Exchange (ETDEWEB)

    Heymann, Gunter [Univ. Innsbruck (Austria). Inst. fuer Allgemeine, Anorganische und Theoretische Chemie; Heying, Birgit; Rodewald, Ute C. [Univ. Muenster (Germany). Inst. fuer Anorganische und Analytische Chemie; Janka, Oliver [Univ. Muenster (Germany). Inst. fuer Anorganische und Analytische Chemie; Univ. Oldenburg (Germany). Inst. fuer Chemie

    2017-03-01

    The intermetallic aluminum compound HP-CePtAl was synthesized by arc melting of the elements with subsequent high-pressure/high-temperature treatment at 1620 K and 10.5 GPa in a multianvil press. The compound crystallizes in the hexagonal MgZn{sub 2}-type structure (P6{sub 3}/mmc) with lattice parameters of a=552.7(1) and c=898.8(2) pm refined from powder X-ray diffraction data. With the help of single crystal investigations (wR=0.0527, 187 F{sup 2} values, 13 variables), the proposed structure type was confirmed and the mixed Pt/Al site occupations could be refined. Magnetic susceptibility measurements showed a disappearance of the complex magnetic ordering phenomena, which are observed in NP-CePtAl.

  20. 10 GHz 2ωce heavy ion source CAPRICE

    International Nuclear Information System (INIS)

    Jacquot, B.; Briand, P.; Bourg, F.; Geller, R.

    1988-01-01

    By using a new 0.8 T sextupole, the second step of metamorphosis of the ECR magnetic structure of the CAPRICE source is achieved. The 2ω ce surface is now extended everywhere in the second stage except the extraction part. Thus, a strong flux of deconfined plasma is available at the extraction area and therefore high currents of high charge state ions are extracted. Optimum rf power is increased by a factor of 3 with respect to the single ω ce profile and currents of high charge state ions are increased by a factor of 10. The optimum performance for all gases and all solid elements is shown. The third step of the metamorphosis is planned for next year to achieve and work with two complete ECR surfaces. Future developments are also expected. (orig./HSI)

  1. Ni-CeO2 Cermets Synthesis by Solid State Sintering of Ni/CeO2 Multilayer

    Directory of Open Access Journals (Sweden)

    Aleksandras ILJINAS

    2013-12-01

    Full Text Available Nickel and gadolinium doped cerium oxide (GDC cermet is intensively investigated for an application as an anode material for solid oxide fuel cells based on various electrolytes. The purpose of the present investigation is to analyze morphology, microstructure, and optical properties of deposited and annealed for one hour in the temperatures from 500 ºC to 900 ºC Ni/CeO2 multilayer thin films deposited by sputtering. The crystallographic structure of thin films was investigated by X-ray diffraction. The morphology of the film cross-section was investigated with scanning electron microscope. The elemental analysis of samples was investigated by energy-dispersive X-ray spectroscopy. The fitting of the optical reflectance data was made using Abeles matrix method that is used for the design of interference coatings. The film cross-section of the post-annealed samples consisted of four layers. The first CeO2 layer (on Si had the same fine columnar structure with no features of Ni intermixing. The part of Ni (middle-layer after annealing was converted to NiO with grain size exceeding 100 nm. The CeO2 layer deposited on Ni was divided into two layers. Lower layer had small grains not exceeding 25 nm and consisting of NiO and CeO2 mixture. Upper layer consisted of CeO2 columns with approximate thickness of 50 nm. Ni sample annealed at 600 ºC was fully oxidized. The NiO thickness and refraction index were almost steady after annealing in various temperatures. The approximation of experimental reflectance data was successful only for the samples with one transparent homogeneous layer. The reflectance of the Ni/CeO2 samples annealed at intermediate temperatures could not be fitted using one-layer or three-layer model. That may show that a simplified model could not be implemented.  The real system has complicated distribution of refraction index. DOI: http://dx.doi.org/10.5755/j01.ms.19.4.3073

  2. Ce-didymium-Fe-B sintered permanent magnets

    International Nuclear Information System (INIS)

    Homma, M.; Okada, M.; Sugimoto, S.

    1985-01-01

    Present works report the development of the low cost R-Fe-B permanent magnets. The best magnetic properties obtained in this studies are Br=13.5 kG, iHc=10.2 kOe and (BH)max=40 MGOe with an Fe-33.5wt%(5Ce-Didymium)-1wt% B alloy. Topics considered in this paper include cerium alloys, boron alloys, fabrication, capitalized cost, iron alloys, permanent magnets, and magnetic properties

  3. Optical spectroscopy of the Ce-doped multicomponent garnets

    International Nuclear Information System (INIS)

    Canimoglu, A.; Karabulut, Y.; Ayvacikli, M.; Muresan, L.E.; Perhaita, I.; Barbu-Tudoran, L.; Garcia Guinea, J.; Karali, T.; Can, N.

    2016-01-01

    Here, we report our results referring to the preparation of Ce doped Y 2.22 MgGa 2 Al 2 SiO 12 , Y 1.93 MgAl 4 SiO 12 and Y 2.22 Gd 0.75 Ga 2 Al 3 O 12 using solid state reaction at high temperature. Several complementary methods (i.e. powder x-ray diffraction (XRPD), energy dispersive analysis of X-rays (EDX), scanning electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FTIR)) were studied to examine the effects of the synthesis procedure on the morphology and structure. XRD analyses revealed that all compounds include yttrium aluminate phase with garnet structure. Cathodoluminescence (CL), radioluminescence (RL) and photoluminescence (PL) measurements were carried out for clarification of relationship between host lattice defects and the spectral luminescence emissions. Luminescence emission of phosphors is peaked at 530 nm assigned to 5d-4f transitions of the dopant Ce 3+ ions with a broad emission band in 400–700 nm range. Under electron irradiation, the emission spectrum of Ce doped (YGd) 3 Ga 2 Al 3 O 12 is well defined and has a characteristic fairly narrow and sharp emission band peaking at 312 nm and 624 nm corresponding to transition of 6 P 7/2 → 8 S 7/2 and 6 G J → 6 P J (Gd 3+ ), respectively. We suggest some of phosphors might be excellent phototherapy phosphor materials under electron excitation. - Highlights: • Ce-doped Multicomponent Garnets were prepared solid state reaction method. • The shape and size of phosphor particles were examined. • The narrow band UV B emission due to Gd 3+ ions were observed.

  4. Qu'est-ce que l'Univers ?

    CERN Document Server

    2001-01-01

    Les plus grans spécialistes français sont réunis dans ce quatrième volume. Ils éclairent les grandes questions que pose la cosmologie, le Système solaire, les étoiles et les galaxies, la Terre, les océans et le climat, la matière et son organisation, l'évolution des mathématiques, la complexité, les transformations chimiques.

  5. Proposal for product development model focused on ce certification methodology

    Directory of Open Access Journals (Sweden)

    Nathalia Marcia Goulart Pinheiro

    2015-09-01

    Full Text Available This paper presents a critical analysis comparing 21 product development models in order to identify whether these structures meet the demands Product Certification of the European Community (CE. Furthermore, it presents a product development model, comprising the steps in the models analyzed, including improvements in activities for referred product certification. The proposed improvements are justified by the growing quest for the internationalization of products and processes within companies.

  6. CeDAMar global database of abyssal biological sampling

    OpenAIRE

    Stuart, Carol T.; Arbizu, Pedro Martinez; Smith, Craig R.; Molodtsova, Tina; Brandt, Angelika; Etter, Ron J.; Escobar-briones, Elva; Fabri, Marie-claire; Rex, Michael A.

    2008-01-01

    The Census of the Diversity of Abyssal Marine Life (CeDAMar), a division of the Census of Marine Life, has compiled the first comprehensive global database of biological samples taken in the abyssal plains of the world ocean. It is an essential resource for planning future exploration of the abyss, for synthesizing patterns of biogeography and biodiversity, and for environmentally safe exploitation of natural resources. The database is described in this article, and made available to investig...

  7. Systematics of triaxial deformation in Xe, Ba, and Ce nuclei

    International Nuclear Information System (INIS)

    Yan, J.; Vogel, O.; von Brentano, P.; Gelberg, A.

    1993-01-01

    The (β,γ) deformation parameters of even-even Xe, Ba, and Ce nuclei have been calculated by using the triaxial rotor model. Deformation parameters calculated, on one hand, from decay properties and, on the other hand, from energies are in good agreement. The smooth dependence of the deformation parameters on Z and N is discussed. The results are compared with those extracted from properties of odd-A nuclei

  8. Reaction /sup 140/Ce (e, e'p), (2)

    Energy Technology Data Exchange (ETDEWEB)

    Saito, T; Shoda, K [Tohoku Univ., Sendai (Japan). Lab. of Nuclear Science

    1975-06-01

    An experiment was carried out to study the character of the resonance observed at 24.4 MeV in the /sup 140/Ce (..gamma.., p) /sup 139/La reaction. The (..gamma.., p/sub 0/ + p/sub 1/) cross section was measured at the angles of 54.7/sup 0/ and 125.3/sup 0/, at which the angle-dependent term of E1 becomes zero, for the energy range between 19 and 26 MeV. Existence of a peak due to the E2 resonance around 24.4 MeV was examined. The energy of incident electrons from a linear accelerator was changed between 20 and 26.7 MeV. The target was a Ce foil of 7.3 mg/cm/sup 2/ thick. The proton spectra due to the /sup 140/Ce (e, e' p) /sup 139/La reaction were measured with a broad range magnetic spectrometer. In the determined spectra of /sup 140/Ce (..gamma.., p/sub 0/+p/sub 1/) /sup 139/La, any remarkable peak, except one at 20.5 MeV, was not seen. From the observed spectra, the total cross section and the asymmetry factor due to interference were obtained as functions of energy. The values of the asymmetry factor were almost flat in the energy range between 19 and 26 MeV. The resonance at 24.4 MeV in the total cross section may be due to the E1 resonance, and is not due to the E2.

  9. Scintillation properties of the Ce-doped multicomponent garnetepitaxial films

    Czech Academy of Sciences Publication Activity Database

    Průša, Petr; Kučera, M.; Mareš, Jiří A.; Hanuš, M.; Beitlerová, Alena; Onderišinová, Z.; Nikl, Martin

    2013-01-01

    Roč. 35, č. 12 (2013), s. 2444-2448 ISSN 0925-3467 R&D Projects: GA ČR GAP204/12/0805 Institutional support: RVO:68378271 Keywords : scintillator * liquid phase epitaxy method * photoelectron yield * garnet * Ce 3+ Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 2.075, year: 2013 http://dx.doi.org/10.1016/j.optmat.2013.06.051

  10. Nouvelle espèce des Syntomides (Lepidoptera Heterocera)

    NARCIS (Netherlands)

    Snellen, P.C.T.

    1886-01-01

    Quatre mâles frais et bien conservés de 58—64 millim. d’envergure. Cette nouvelle espèce, gigantesque pour une Syntomide, appartient au genre Automolis, tel qu’il a été défini par Herrich-Schäffer, dans son ouvrage »Sammlung aussereuropäischer Schmetterlinge” (p. 21); le nom est emprunté au bien

  11. Determination of the differences in oxidation potentials for the Pr3+/Pr2+ and Ce3+/Ce2+ pairs in halide melts

    International Nuclear Information System (INIS)

    Mikheev, N.B.; Auerman, L.N.; Rumer, I.A.; D'yachkova, R.A.

    1983-01-01

    Cocrystallization has been used with the (PrOCl)/sub s. ph/ - (PrCl 2 , PrCl 3 , SrCl 2 ) melt system to examine the dependence of the cerium(III) cocrystallization coefficient on the X/sub Pr 2+ /X/sub Pr 3+ / ratio in the melt. Measurement has been made in this way of the difference in oxidation potentials for the pairs Pr 3+ /Pr 2+ and Ce 3+ /Ce 2+ : ΔE/sub Pr 3+ /Pr 2+0 -E/sub Ce 3+ /Ce 2+ / 0 , which is 0.08 +/- 0.04 V for chloride

  12. Physical, biochemical and genetic characterization of enterocin CE5-1 produced by Enterococcus faecium CE5-1 isolated from Thai indigenous chicken intestinal tract

    OpenAIRE

    Kraiyot Saelim; Sireewan Kaewsuwan; Akio Tani; Suppasil Maneerat

    2015-01-01

    Enterocin CE5-1 produced by Enterococcus faecium CE5-1 isolated from the chicken gastrointestinal tract was active in the wide range of pH 2-10 and temperature 30-100°C and sensitive to proteolytic enzymes and -amylase. It remained active after storage at -20°C for 2 months. Moreover, enterocin CE5-1 showed antibacterial activity against lactobacilli, bacilli, listeria, staphylococci and enterococci, especially antibiotic-resistant enterococci. In vitro study of enterocin CE5-1 decr...

  13. XAFS Analysis of Local Structure around Ce in Ca3Sc2Si3O12:Ce Phosphor for White LEDs

    International Nuclear Information System (INIS)

    Akai, Toshio; Shigeiwa, Motoyuki; Okamoto, Kaoru; Shimomura, Yasuo; Kijima, Naoto; Honma, Tetsuo

    2007-01-01

    We have studied the local structure around Ce atom in Ca3Sc2Si3O12 host crystal, which has been developed as a new green phosphor for white light emitting diodes (LEDs). As the local structure and chemical environment of the dopant atom are very important to improve the performance of the phosphor, we have used XAFS to get chemical and structural information around the Ce dopant. The XANES spectrum of the Ce LIII-edge reveals that the Ce atom is trivalent in Ca3Sc2Si3O12. There are two kinds of possible Ce substitution sites, Ca site and Sc site, in garnet type Ca3Sc2Si3O12 crystal structure. The Ce atom is found to be at the Ca site in the host crystal by the comparison of the Fourier transform of Ce K-edge EXAFS spectrum with those of Ca and Sc K-edge EXAFS spectra. The theoretical analysis with FEFF also clarified the Ce substitution at the Ca site. Furthermore, the result of the analysis indicates the structural disorder around Ca and Si atoms at 3.75 A. It is possible that there are some defects around the Ca and Si atoms at 3.75 A to compensate the excess positive charge by introduced Ce3+ at the Ca2+ site

  14. Redox potentials and kinetics of the Ce 3+/Ce 4+ redox reaction and solubility of cerium sulfates in sulfuric acid solutions

    Science.gov (United States)

    Paulenova, A.; Creager, S. E.; Navratil, J. D.; Wei, Y.

    Experimental work was performed with the aim of evaluating the Ce 4+/Ce 3+ redox couple in sulfuric acid electrolyte for use in redox flow battery (RFB) technology. The solubility of cerium sulfates in 0.1-4.0 M sulfuric acid at 20-60 °C was studied. A synergistic effect of both sulfuric acid concentration and temperature on the solubility of cerous sulfate was observed. The solubility of cerous sulfate significantly decreased with rising concentration of sulfuric acid and rising temperature, while the solubility of ceric sulfate goes through a significant maximum at 40 °C. Redox potentials and the kinetics of the cerous/ceric redox reaction were also studied under the same temperature-concentration conditions. The redox potentials were measured using the combined redox electrode (Pt-Ag/AgCl) in equimolar Ce 4+/Ce 3+ solutions (i.e.[Ce 3+]=[Ce 4+]) in sulfuric acid electrolyte. The Ce 3+/Ce 4+ redox potentials significantly decrease (i.e. shift to more negative values) with rising sulfuric acid concentration; a small maximum is observed at 40 °C. Cyclic voltammetric experiments confirmed slow electrochemical kinetics of the Ce 3+/Ce 4+ redox reaction on carbon glassy electrodes (CGEs) in sulfuric acid solutions. The observed dependencies of solubilities, the redox potentials and the kinetics of Ce 3+/Ce 4+ redox reaction on sulfuric acid concentration are thought to be the result of inequivalent complexation of the two redox species by sulfate anions: the ceric ion is much more strongly bound to sulfate than is the cerous ion. The best temperature-concentration conditions for the RFB electrolytes appear to be 40 °C and 1 M sulfuric acid, where the relatively good solubility of both cerium species, the maximum of redox potentials, and the more or less satisfying stability of CGE s were found. Even so, the relatively low solubility of cerium salts in sulfuric acid media and slow redox kinetics of the Ce 3+/Ce 4+ redox reaction at carbon indicate that the Ce 3+/Ce

  15. Physical, biochemical and genetic characterization of enterocin CE5-1 produced by Enterococcus faecium CE5-1 isolated from Thai indigenous chicken intestinal tract

    Directory of Open Access Journals (Sweden)

    Kraiyot Saelim

    2015-06-01

    Full Text Available Enterocin CE5-1 produced by Enterococcus faecium CE5-1 isolated from the chicken gastrointestinal tract was active in the wide range of pH 2-10 and temperature 30-100°C and sensitive to proteolytic enzymes and -amylase. It remained active after storage at -20°C for 2 months. Moreover, enterocin CE5-1 showed antibacterial activity against lactobacilli, bacilli, listeria, staphylococci and enterococci, especially antibiotic-resistant enterococci. In vitro study of enterocin CE5-1 decreased the population of Ent. faecalis VanB from 6.03 to 4.03 log CFU/ml. The lethal mode of action of enterocin CE5-1 appeared to be pore and filament formation in the cell wall. PCR sequencing analysis revealed the presence of two open reading frames (ORFs, containing enterocin CE5-1 (entCE5-1 and enterocin immunity (entI gene. Therefore, enterocin CE5-1 from Ent. faecium CE5-1 could possibly be used as an antimicrobial agent to control foodborne pathogen, spoilage bacteria and antibiotic-resistant enterococci in foods, feeds and the environments.

  16. Características da clientela atendida por crise hipertensiva na emergência de um hospital municipal de Fortaleza, Estado do Ceará - DOI: 10.4025/actascihealthsci.v32i1.5746 Characteristics of the clientele assisted for hypertensive crisis in the emergency of a municipal hospital in Fortaleza, Ceará State - DOI: 10.4025/actascihealthsci.v32i1.5746

    Directory of Open Access Journals (Sweden)

    Ana Célia Caetano de Souza

    2009-12-01

    Full Text Available Objetivou-se descrever as características da clientela com crise hipertensiva. A pesquisa, quantitativa, descritiva e documental foi realizada em um hospital municipal de Fortaleza, Estado do Ceará em 2006. Na análise de 790 fichas de atendimento, observamos que 48,2% dos pacientes que apresentavam crise hipertensiva, encontravam-se na faixa etária de 40 a 59 anos e a maioria dos indivíduos era de casados (57,5%. Os principais sintomas encontrados foram cefaleia (35,7% e dor precordial (12.3% e, em 36,8% das fichas, não houve registro de sinais e sintomas. As medicações mais prescritas foram o captopril (90,6% e furosemida (53%. Conclui-se que a crise hipertensiva acomete muitos adultos, a maioria casados e que geralmente vão à emergência para fazer avaliação clínica de algum sinal/sintoma. Ressalta-se a necessidade de se alertar os profissionais de saúde quanto à importância do registro para conhecimento e compreensão das características dessa clientela para o controle e a prevenção da crise hipertensiva.The objective was to describe the characteristics of the clientele with hypertensive crisis. The research, which was quantitative, descriptive and documentary, was conducted at a municipal hospital in Fortaleza, Ceará Estate in 2006. In the analysis of 790 patient files, we found that 48.2% of patients presenting hypertensive crisis were in the age group between 40 and 59 years old. Most of the individuals were married (57.5%. The main symptoms were headache (35.7% and chest pain (12.3%, and in 36.8% of files there was no record of signs and symptoms. The most prescribed medications were captopril (90.6% and furosemide (53%. We conclude that hypertensive crisis affects many adults, most married and who usually go to the emergency room for clinical evaluation of a sign/symptom. We emphasize the need to alert health professionals about the importance of records for knowledge and understanding of the characteristics of that

  17. Estudo de casos sobre abandono do tratamento da tuberculose: avaliação do atendimento, percepção e conhecimentos sobre a doença na perspectiva dos clientes (Fortaleza, Ceará, Brasil Non-adherence to tuberculosis treatment: a study on perceptions and knowledge of the disease and evaluation of health services from the patient perspective (Fortaleza, Ceará, Brazil

    Directory of Open Access Journals (Sweden)

    Mary Braga de Lima

    2001-08-01

    Full Text Available Esta pesquisa foi desenvolvida em 1995 e 1996 no Centro de Saúde Oliveira Pombo, Fortaleza, Ceará. Os objetivos foram os seguintes: geral - identificação de fatores que determinam o abandono do tratamento da tuberculose; específicos - análise da dinâmica do atendimento e da freqüência de casos e de abandono do tratamento; identificação das características sócio-econômicas e culturais dos clientes (atores sociais; causas impeditivas ao tratamento; conhecimentos e percepção da doença pelos clientes. Duas abordagens metodológicas foram utilizadas: de natureza epidemiológica descritiva e sociológica interpretativa, utilizando questionário semi-estruturado com os seguintes conteúdos: sexo; idade; estado civil; escolaridade; ocupação; rendimento; descrição da residência; formas de deslocamento; níveis de conhecimentos e percepção sobre a doença e o tratamento; identificação de sentimentos reativos à doença; avaliação sobre o atendimento; comportamento e estilos de vida prejudiciais; decisões de mudanças para melhoria da saúde. Os resultados obtidos apontaram fatores múltiplos de natureza complexa, que influem direta ou indiretamente para o abandono do tratamento.This research was developed in 1995-1996 in the Oliveira Pombo Health Center (CSOP, Fortaleza, Ceará, Brazil. The aim was to explore factors influencing non-adherence to tuberculosis treatment. Specific objectives were: dynamics of tuberculosis notification and treatment of non-adherence cases at the CSOP; demographic, social, economic, and cultural profiles of clientele (social actors; default reasons that interrupt treatment; and knowledge and perception of the disease. The methodological approach was based on descriptive epidemiology and on sociological interpretivism. A semi-structured interview was used for questions related to the social actors, such as: demographic, social, economic, cultural, and behavioral factors; knowledge and perceptions of

  18. Radon gamma-ray spectrometry with YAP:Ce scintillator

    CERN Document Server

    Plastino, W; De Notaristefani, F

    2002-01-01

    The detection properties of a YAP:Ce scintillator (YAlO sub 3 :Ce crystal) optically coupled to a Hamamatsu H5784 photomultiplier with standard bialkali photocathode have been analyzed. In particular, the application to radon and radon-daughters gamma-ray spectrometry was investigated. The crystal response has been studied under severe extreme conditions to simulate environments of geophysical interest, particularly those found in geothermal and volcanic areas. Tests in water up to a temperature of 100 deg.C and in acids solutions such as HCl (37%), H sub 2 SO sub 4 (48%) and HNO sub 3 (65%) have been performed. The measurements with standard radon sources provided by the National Institute for Metrology of Ionizing Radiations (ENEA) have emphasized the non-hygroscopic properties of the scintillator and a small dependence of the light yield on temperature and HNO sub 3. The data collected in this first step of our research have pointed out that the YAP:Ce scintillator can allow high response stability for rad...

  19. F-centre luminescence in nanocrystalline CeO2

    International Nuclear Information System (INIS)

    Aškrabić, S; Dohčević-Mitrović, Z D; Araújo, V D; Ionita, G; De Lima, M M Jr; Cantarero, A

    2013-01-01

    Nanocrystalline CeO 2 powders were synthesized by two cost-effective methods: the self-propagating room temperature (SPRT) method and the precipitation method. Differently prepared samples exhibited different temperature-dependent photoluminescence (PL) in the ultraviolet and visible regions. The PL signals originated from different kinds of oxygen-deficient defect centres with or without trapped electrons (F 0 , F + or F ++ centres). The temperature-dependent PL spectra were measured using different excitation lines, below (457, 488 and 514 nm) or comparable (325 nm) to the ceria optical band gap energy, in order to investigate the positions of intragap localized defect states. Evidence for the presence of F + centres was supported by the signals observed in electron paramagnetic resonance (EPR) measurements. Based on PL and EPR measurements it was shown that F + centres dominate in the CeO 2 sample synthesized by the SPRT method, whereas F 0 centres are the major defects in the CeO 2 sample synthesized by the precipitation method. The luminescence from F ++ states, as shallow trap states, was registered in both samples. Energy level positions of these defect states in the ceria band gap were proposed. (paper)

  20. F-centre luminescence in nanocrystalline CeO2

    Science.gov (United States)

    Aškrabić, S.; Dohčević-Mitrović, Z. D.; Araújo, V. D.; Ionita, G.; de Lima, M. M., Jr.; Cantarero, A.

    2013-12-01

    Nanocrystalline CeO2 powders were synthesized by two cost-effective methods: the self-propagating room temperature (SPRT) method and the precipitation method. Differently prepared samples exhibited different temperature-dependent photoluminescence (PL) in the ultraviolet and visible regions. The PL signals originated from different kinds of oxygen-deficient defect centres with or without trapped electrons (F0, F+ or F++ centres). The temperature-dependent PL spectra were measured using different excitation lines, below (457, 488 and 514 nm) or comparable (325 nm) to the ceria optical band gap energy, in order to investigate the positions of intragap localized defect states. Evidence for the presence of F+ centres was supported by the signals observed in electron paramagnetic resonance (EPR) measurements. Based on PL and EPR measurements it was shown that F+ centres dominate in the CeO2 sample synthesized by the SPRT method, whereas F0 centres are the major defects in the CeO2 sample synthesized by the precipitation method. The luminescence from F++ states, as shallow trap states, was registered in both samples. Energy level positions of these defect states in the ceria band gap were proposed.

  1. Magnetoresistance in CePtSn under high hydrostatic pressures

    International Nuclear Information System (INIS)

    Misek, M.; Prokleska, J.; Javorsky, P.; Sechovsky, V.

    2009-01-01

    We report the evolution of magnetic-history dependent antiferromagnetic phases in CePtSn. We concentrate on the magnetoresistance in magnetic fields up to 14 T applied along the crystallographic b-axis, measured on a CePtSn single crystal subjected to hydrostatic pressure (p ≤ 2.2 GPa) generated in a double-layered CuBe/NiCrAl piston cylinder cell. We observe a gradual increase of the critical field B c LF of the low field (LF) transition up to ∼1.2 GPa where only one transition is observed at ∼11.5 T. For pressures above 1.2 GPa we observe two transitions again and B c LF decreases with further increasing pressure to reach B c LF ∼7.5T at 2.5 GPa. The position of the high field (HF) transition remains almost unaffected by applied pressure. A scenario considering the spin-slip AF structure in CePtSn is briefly discussed.

  2. NMR study of CeTe at low temperatures

    Energy Technology Data Exchange (ETDEWEB)

    Hinderer, J. [Laboratorium fuer Festkoerperphysik, ETH Zuerich, CH-8093 Zurich (Switzerland)]. E-mail: hinderer@phys.ethz.ch; Weyeneth, S.M. [Laboratorium fuer Festkoerperphysik, ETH Zuerich, CH-8093 Zurich (Switzerland); Weller, M. [Laboratorium fuer Festkoerperphysik, ETH Zuerich, CH-8093 Zurich (Switzerland); Gavilano, J.L. [Laboratorium fuer Festkoerperphysik, ETH Zuerich, CH-8093 Zurich (Switzerland); Felder, E. [Laboratorium fuer Festkoerperphysik, ETH Zuerich, CH-8093 Zurich (Switzerland); Hulliger, F. [Laboratorium fuer Festkoerperphysik, ETH Zuerich, CH-8093 Zurich (Switzerland); Ott, H.R. [Laboratorium fuer Festkoerperphysik, ETH Zuerich, CH-8093 Zurich (Switzerland)

    2006-05-01

    We present {sup 125}Te NMR measurements on CeTe powder at temperatures between 1 and 150K and in magnetic fields between 5 and 8T. CeTe is a rocksalt-type intermetallic compound. It orders antiferromagnetically at T{sub N}{approx}2.2K with a much reduced ordered moment [H.R. Ott, J.K. Kjems, F. Hulliger, Phys. Rev. Lett. 42 20 (1979) 1378]. From our low-temperature NMR spectra we infer the presence of at least three inequivalent Te sites at low temperatures. Considering the crystal structure this result is completely unexpected. The linewidths and the Knight shifts of the individual lines are significantly different and increase substantially with decreasing temperature. They follow the temperature dependence of the magnetic susceptibility above 20K. Above T{sub N}, hyperfine fields of 1.6, 0.8 and 0.0T at the three Te sites per Bohr magneton of Ce moment are deduced from Knight shift vs. magnetic susceptibility data. These values are typical for transferred hyperfine fields via conduction electrons.

  3. Air, aqueous and thermal stabilities of Ce3+ ions in cerium oxide nanoparticle layers with substrates

    KAUST Repository

    Naganuma, Tamaki

    2014-01-01

    Abundant oxygen vacancies coexisting with Ce3+ ions in fluorite cerium oxide nanoparticles (CNPs) have the potential to enhance catalytic ability, but the ratio of unstable Ce3+ ions in CNPs is typically low. Our recent work, however, demonstrated that the abundant Ce3+ ions created in cerium oxide nanoparticle layers (CNPLs) by Ar ion irradiation were stable in air at room temperature. Ce valence states in CNPs correlate with the catalytic ability that involves redox reactions between Ce3+ and Ce4+ ions in given application environments (e.g. high temperature in carbon monoxide gas conversion and immersion conditions in biomedical applications). To better understand the mechanism by which Ce3+ ions achieve stability in CNPLs, we examined (i) extra-long air-stability, (ii) thermal stability up to 500 °C, and (iii) aqueous stability of Ce 3+ ions in water, buffer solution and cell culture medium. It is noteworthy that air-stability of Ce3+ ions in CNPLs persisted for more than 1 year. Thermal stability results showed that oxidation of Ce 3+ to Ce4+ occurred at 350 °C in air. Highly concentrated Ce3+ ions in ultra-thin CNPLs slowly oxidized in water within 1 day, but stability was improved in the cell culture medium. Ce 3+ stability of CNPLs immersed in the medium was associated with phosphorus adsorption on the Ce3+ sites. This study also illuminates the potential interaction mechanisms of stable Ce3+ ions in CNPLs. These findings could be utilized to understand catalytic mechanisms of CNPs with abundant oxygen vacancies in their application environments. © The Royal Society of Chemistry 2014.

  4. Microstructures and luminescent properties of Ce-doped transparent mica glass-ceramics

    International Nuclear Information System (INIS)

    Taruta, Seiichi; Iwasaki, Yoshitomo; Nishikiori, Hiromasa; Yamakami, Tomohiko; Yamaguchi, Tomohiro; Kitajima, Kunio; Okada, Kiyoshi

    2012-01-01

    Highlights: ► Ce-doped transparent glass-ceramics and their parent glasses. ► TEM and STEM images for the microstructures. ► Each mica crystal did not contain Ce uniformly. ► Emission due to Ce 3+ ions in the glass phase and/or Ce 3+ ions in the mica crystals. - Abstract: Transparent mica glass-ceramics were prepared by heating parent glasses that had been doped with 0.5–15 mol% CeO 2 . During the melting and heat treatment, Ce 4+ ions in the specimens were reduced to Ce 3+ ions, and one or both of these ion species were then replaced with Li + ions in the interlayers of the separated mica crystals. However, scanning transmission electron microscope (STEM) and Z-contrast imaging revealed that the mica crystals did not contain the same amount of Ce. On excitation at 254 nm, the parent glasses and glass-ceramics emitted blue light, which originated from the 5d to 4f transition of the Ce 3+ ions. The emission of the glass-ceramic containing a smaller amount of Ce was attributed to the Ce 3+ ions in both the glass phase and the mica crystals, whereas that of the glass-ceramics containing a larger amount of Ce was caused mainly by Ce 3+ ions in the mica crystals. The dependence of the emission band of the parent glasses on the amount of Ce was a unique feature of the Ce-doped transparent mica glass-ceramics and was not observed in previous studies of Eu-doped parent glasses and mica glass-ceramics.

  5. Seguidors vencen, un grito de guerra para un rey: Un lema para la virtud de la Fortaleza en Alfonso V el Magnánimo (1423-1458

    Directory of Open Access Journals (Sweden)

    Gema Belia Capilla Aledón

    2017-12-01

    Full Text Available La historia política de Alfonso V el Magnánimo, rey de Aragón (1416-1458 permanece asociada, indefectiblemente, a sus derechos so- bre el trono de Nápoles. Las vicisitudes que vivió desde 1423, cuando Juana II Durazzo lo destituyó como heredero de aquel reino, hasta lo- grarlo en 1442, motivaron toda una serie de elementos representativos con los que el soberano buscó legitimarse ante sus súbditos y con- temporáneos. De entre ellos, reclama la atención el posible uso que el monarca hizo del lema «Seguidors vencen». El estudio de dicho mote y su posible asociación al emblema real del Siti Perillós constituyen el objeto del presente artículo. The political history of Alfonsus V the Magnanimous, King of Aragon (1416-1458, remains associated, unfailingly, to his rights over the throne of Naples. e events that he lived since 1423, when Juana II Durazzo deposed him as heir of that, until he achieved it in 1442, gave rise to a whole series of representative elements with which the sovereign sought to legitimize himself before his subjects and contemporaries. Among them, claim our attentiveness the possible use that the monarch made of the motto «Seguidors vencen» (Followers overcome. e study of this saying and its possible association to the real emblem of the Siti Perillós (Dangerous Chair constitute the subject of this article.

  6. The γ rays sensitivity measurement of CeF3 scintillator detector

    International Nuclear Information System (INIS)

    Hu Mengchun; Zhou Dianzhong; Li Rurong; Wang Zhentong; Yang Hongqiong; Zhang Jianhua; Hu Qingyuan; Peng Taiping

    2003-01-01

    The CeF 3 is an abio-scintillator developed in recent years, which are insensitive to neutron and sensitive to gamma rays and respond quickness. The relationship of CeF 3 scintillation detector gamma rays sensitivity with the change of crystal thickness was measured. The CeF 3 scintillation detector is composed by high liner current photomultiplier tube of CHφT3, CHφT5 and CeF 3 scintillator. The detector gamma rays sensitivity of purple photocell and common photocell with CeF 3 scintillator were measured too

  7. CeBr3 as a room-temperature, high-resolution gamma-ray detector

    International Nuclear Information System (INIS)

    Guss, Paul; Reed, Michael; Yuan Ding; Reed, Alexis; Mukhopadhyay, Sanjoy

    2009-01-01

    Cerium bromide (CeBr 3 ) has become a material of interest in the race for high-resolution gamma-ray spectroscopy at room temperature. This investigation quantified the potential of CeBr 3 as a room-temperature, high-resolution gamma-ray detector. The performance of CeBr 3 crystals was compared to other scintillation crystals of similar dimensions and detection environments. Comparison of self-activity of CeBr 3 to cerium-doped lanthanum tribromide (LaBr 3 :Ce) was performed. Energy resolution and relative intrinsic efficiency were measured and are presented.

  8. Investigation into kinetics of redox interaction in the system Ce(4) β-diketonate-additional ligand

    International Nuclear Information System (INIS)

    Anufrieva, S.I.; Snezhko, N.I.; Pechurova, N.I.; Martynenko, L.N.; Spitsyn, V.I.

    1981-01-01

    The rate of reduction of β-diketonate complexes of Ce(4) to Ce(3) β-diketonates in benzene solution in the presence and in the absence of additional ligands is studied using spectrophotometry. The rate of reduction of Ce(4) β-diketonates increases in the series Ce(TTFA) 4 4 4 4 4 (TTFA - thenoyltrifluoroacetone, DPM- --dipivaloylmethane, DBM - dibenzoylemethane, BA benzoylacetone, AA - acetylaceton). The studied phosphorus-containing additional ligands as to their effect on the rate of Ce (4) reduction can be arranged in the following order: trioctylphosphine oxide>triphenylphosphine oxide>tributyl phosphate [ru

  9. Controlled hydrothermal synthesis of CeO{sub 2} nanospheres and their excellent magnetic properties

    Energy Technology Data Exchange (ETDEWEB)

    Niu, Xiaofei [Suzhou University, Anhui Key Laboratory of Spintronics and Nanomaterials Research, Suzhou, Anhui (China)

    2017-04-15

    Monodisperse spherical CeO{sub 2} nanostructures with irregular and rough surfaces have successfully been synthesized via a facile hydrothermal technology. XRD, SEM, XPS, Raman scattering, and M-H curves were employed to characterize the samples. The results showed that the spherical CeO{sub 2} nanostructures have a cubic fluorite structure and that there are Ce{sup 3+} ions and oxygen vacancies in the surface of the samples. The M-H curve of CeO{sub 2} nanospheres exhibits excellent room-temperature ferromagnetism (RT-FM), which is likely ascribed to the effects of the Ce{sup 3+} ions and oxygen vacancies. (orig.)

  10. LiCaAlF sub 6 :Ce crystal: a new scintillator

    CERN Document Server

    Gektin, A V; Neicheva, S; Gavrilyuk, V; Bensalah, A; Fukuda, T; Shimamura, K

    2002-01-01

    Scintillation properties of LiCaAlF sub 6 :Ce crystal, well known as the effective UV laser material, is reported. Ce sup 3 sup + emission at 286-305 nm with a single exponential decay time of 35 ns provides a scintillation pulse. Radiation damage in pure and Ce-doped crystals is studied. In contrast to the majority of fluoride crystals, cerium is responsible for the ultradeep traps formation revealing thermostimulated luminescence. Overlapping of color center absorption and Ce sup 3 sup + ion emission bands limits the scintillation efficiency of LiCaAlF sub 6 :Ce at high radiation doses.

  11. Non-aqueous CE-MS of cinchona alkaloids - characterizationof a novel CE-ESI-MS interface

    DEFF Research Database (Denmark)

    Hansen, Frederik André; Hansen, Steen Honoré; Petersen, Nickolaj J.

    We have recently in our group at the University of Copenhagen developed a robust and simple sheatless CE-ESI-MS interface (capillary electrophoresis – electrospray ionization-mass spectrometry). In this presentation the interface is characterized and compared with HPLC-MS for studying...... a submicron fracture in the capillary close the ESI tip. The fracture provides a zero dead volume and excellent conducting properties due to the large amount of ions in the electric double layer. Electric current exceeding the upper limit of CE instrumentation of up to 300 µA can easily be obtained....... Furthermore, the increased conductivity of the buffer in the fracture generates field free pumping of the analytes towards the ESI spray tip. In this study the device was used to analyze the four major alkaloids (diastereomeric pairs of quinine/quinidine and cinchonine/cinchonidine) in Cinchona bark samples...

  12. Deficiência de vitamina B12 em pacientes de uma enfermaria de clínica médica em Fortaleza/CEdoi: 10.20513/2447-6595.2016v56n1p18-23

    Directory of Open Access Journals (Sweden)

    Jéssica Maria Moura Cassimiro

    2016-06-01

    Full Text Available Foi realizado um estudo transversal que contou com 116 participantes que estiveram internados na enfermaria de Clínica Médica do Hospital Geral de Fortaleza (HGF nos seis primeiros meses do ano de 2015. O objetivo foi descrever a prevalência da deficiência de vitamina B12 e descrever as características clínicas em pacientes internados nessa unidade. A prevalência de deficiência de cobalamina foi de 18%. Encontramos que 40% dos pacientes apresentaram afecção neurológica não explicada por causas vasculares, 20% anemia macrocítica, 20% alcoolismo, 20% uso de inibidor de bomba de prótons, 10% uso de metformina, 10% dieta estritamente vegetariana, 10% diagnóstico de infecção por HIV, 10% diagnóstico prévio de gastrite atrófica e 10% diagnóstico prévio de hipotireoidismo. Em nenhum caso supracitado encontrou-se significância estatística (p < 0,05.

  13. The Environment Analysis in the CE-3 Landing Region

    Science.gov (United States)

    Mu, L.; Liu, J.; Zeng, X.; Gao, X.; Yan, W.; Zou, X.; Li, C.

    2014-12-01

    To understand the environment and select detecting objects for the Yutu Rover, NAOC used the DEM and DOM data obtained by CE-2, geological data released by USGS, and high resolution image captured by CE-3 and LRO-NAC to analyze the topographical characteristic, geologic age, Geomorphological feathers and new dust distribution in two scale levels. The first level is 45km×75km, and another one is 4km×4km. The center of the study region is the CE-3 landing site (19.51°W, 44.12°N). The following is the initial conclusions: (1) CE-3 landed on a relatively flat region in the Mare Imbrium with an elevation of -2615m. The geological age of the landing site belongs to young Eratoshenian. 10km to the north of the landing site is the older Mare Imbrium stratum, and the location of the landing site is just on the intersection area of these two stratums. (2) The landing site lies on the edge of a lunar mountain with a decline tendency from west to east, and the topographic slope and roughness of the landing region is low, which is the typical characteristic of lunar mare. There is a big crater with diameter of 430 meters in the west of the landing site, and lots of stones in different colors on the rim of this crater, shown in the Figure2. (3) By comparing the images captured by LRO-NAC before and after the landing, much lunar dust was blown away by the engine plume during the landing of CE-3. The change scope is about 60m with from east-west and 135m length from south-north. The direction of landing is from south-north, so the length is larger than the width, shown in the figure 3. (4) In the initial stage, the Yutu Rover was suggested to move in south direction and late in north direction, which would get more scientific data and result.

  14. Numerical simulation of the geometrical-optics reduction of CE2 and comparisons to quasilinear dynamics

    Science.gov (United States)

    Parker, Jeffrey B.

    2018-05-01

    Zonal flows have been observed to appear spontaneously from turbulence in a number of physical settings. A complete theory for their behavior is still lacking. Recently, a number of studies have investigated the dynamics of zonal flows using quasilinear (QL) theories and the statistical framework of a second-order cumulant expansion (CE2). A geometrical-optics (GO) reduction of CE2, derived under an assumption of separation of scales between the fluctuations and the zonal flow, is studied here numerically. The reduced model, CE2-GO, has a similar phase-space mathematical structure to the traditional wave-kinetic equation, but that wave-kinetic equation has been shown to fail to preserve enstrophy conservation and to exhibit an ultraviolet catastrophe. CE2-GO, in contrast, preserves nonlinear conservation of both energy and enstrophy. We show here how to retain these conservation properties in a pseudospectral simulation of CE2-GO. We then present nonlinear simulations of CE2-GO and compare with direct simulations of quasilinear (QL) dynamics. We find that CE2-GO retains some similarities to QL. The partitioning of energy that resides in the zonal flow is in good quantitative agreement between CE2-GO and QL. On the other hand, the length scale of the zonal flow does not follow the same qualitative trend in the two models. Overall, these simulations indicate that CE2-GO provides a simpler and more tractable statistical paradigm than CE2, but CE2-GO is missing important physics.

  15. Effect of cerium on the corrosion behaviour of sintered (Nd,Ce)FeB magnet

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Lijing [CAS Key Laboratory of Magnetic Materials and Devices, Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China); Bi, Mengxue [CAS Key Laboratory of Magnetic Materials and Devices, Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China); Nano Science and Technology Institute, University of Science and Technology of China, Hefei 230026 (China); Jiang, Jianjun; Ding, Xuefeng [CAS Key Laboratory of Magnetic Materials and Devices, Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China); Zhu, Minggang; Li, Wei [Functional Materials Research Institute, Central Iron & Steel Research Institute, Beijing 100081 (China); Lv, Zhongshan [Ningbo Shuo Teng new material Co., Ltd., Cixi 315301 (China); Song, Zhenlun, E-mail: songzhenlun@nimte.ac.cn [CAS Key Laboratory of Magnetic Materials and Devices, Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201 (China)

    2017-06-15

    Highlights: • A little Ce could promote the magnets for a better corrosion resistance. • With increased Ce contents, the corrosion resistances of magnets decrease. • As the corrosion developed, the magnetic properties decreased. - Abstract: For the balanced consumption of rare-earth elements, cerium (Ce) was partially used for NdFeB magnets instead of Nd. The corrosion behaviour of the (Nd,Ce)FeB magnet with different Ce contents in 3.5% NaCl solution was investigated by SEM, XRD, EDS and electrochemical tests. After immersion, the weight loss was calculated and the magnetic properties of the samples were measured. Results showed that Ce affected the corrosion of the (Nd,Ce)FeB magnet. Compared with the NdFeB magnet without Ce but of the same grade as the magnetic energy product, (Nd,Ce)FeB magnet showed better corrosion resistance. With increased Ce content, the corrosion resistances and magnetic properties of (Nd,Ce)FeB magnets were investigated.

  16. Study of the growth of CeO2 nanoparticles onto titanate nanotubes

    Science.gov (United States)

    Marques, Thalles M. F.; Ferreira, Odair P.; da Costa, Jose A. P.; Fujisawa, Kazunori; Terrones, Mauricio; Viana, Bartolomeu C.

    2015-12-01

    We report the study of the growth of CeO2 nanoparticles on the external walls and Ce4+ intercalation within the titanate nanotubes. The materials were fully characterized by multiple techniques, such as: Raman spectroscopy, infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The ion exchange processes in the titanate nanotubes were carried out using different concentrations of Ce4+ in aqueous solution. Our results indicate that the growth of CeO2 nanoparticles grown mediated by the hydrolysis in the colloidal species of Ce and the attachment onto the titanate nanotubes happened and get it strongly anchored to the titanate nanotube surface by a simple electrostatic interaction between the nanoparticles and titanate nanotubes, which can explain the small size and even distribution of nanoparticles on titanate supports. It was demonstrated that it is possible to control the amount and size of CeO2 nanoparticles onto the nanotube surface, the species of the Ce ions intercalated between the layers of titanate nanotubes, and the materials could be tuned for using in specific catalysis in according with the amount of CeO2 nanoparticles, their oxygen vacancies/defects and the types of Ce species (Ce4+ or Ce3+) present into the nanotubes.

  17. Nanocrystalline Mn-Mo-Ce Oxide Anode Doped Rare Earth Ce and Its Selective Electro-catalytic Performance

    Directory of Open Access Journals (Sweden)

    SHI Yan-hua

    2017-09-01

    Full Text Available The anode oxide of nanocrystalline Mn-Mo-Ce was prepared by anode electro-deposition technology, and its nanostructure and selective electro-catalytic performance were investigated using the SEM, EDS, XRD, HRTEM, electrochemical technology and oxygen evolution efficiency testing. Furthermore, the selective electro-catalytic mechanism of oxygen evolution and chlorine depression was discussed. The results show that the mesh-like nanostructure Mn-Mo-Ce oxide anode with little cerium doped is obtained, and the oxygen evolution efficiency for the anode in the seawater is 99.51%, which means a high efficiency for the selective electro-catalytic for the oxygen evolution. Due to the structural characteristics of γ-MnO2, the OH- ion is preferentially absorbed, while Cl- absorption is depressed. OH- accomplishes the oxygen evolution process during the valence transition electrocatalysis of Mn4+/Mn3+, completing the selective electro-catalysis process. Ce doping greatly increases the reaction activity, and promotes the absorption and discharge; the rising interplanar spacing between active (100 crystalline plane promotes OH- motion and the escape of newborn O2, so that the selective electro-catalytic property with high efficient oxygen evolution and chlorine depression is achieved from the nano morphology effect.

  18. Tetragonal Ce-based Ce-Sm(Fe, Co, Ti){sub 12} alloys for permanent magnets

    Energy Technology Data Exchange (ETDEWEB)

    Martin-Cid, Andres; Salazar, Daniel [BCMaterials, Bizkaia Science and Tecnology Park, 48160 Derio (Spain); Gabay, Aleksandr M.; Hadjipanayis, George C. [Department of Physics and Astronomy, University of Delaware, Newark, DE, 19716 (United States); Barandiaran, Jose Manuel [BCMaterials, Bizkaia Science and Tecnology Park, 48160 Derio (Spain); Department of Electricity and Electronics, University Basque Country (UPV/EHU), 48080 Bilbao (Spain)

    2016-12-15

    Abundance and relatively low cost of Ce provide a great incentive for its use in rare-earth permanent magnets. It has been recently reported that the tetragonal Ce(Fe,Co,Ti)12 compounds may exhibit application-worthy intrinsic magnetic properties. In this work the effect of the α-Fe phase formation due to the evaporation of Sm during alloy fabrication has been studied, as a previous step in the attempt to convert the intrinsic magnetic properties into functional properties of a permanent magnet. Ce{sub 0.5}Sm{sub 0.5}Fe{sub 9}Co{sub 2}Ti alloys based on the ThMn12-type crystal structure have been synthesized via melt-spinning with different Sm content. Coercive fields between 2.8 and 1.4 kOe have been found for α-Fe phase contents between 8 and 46% in volume, showing the influence of the α-Fe phase on the coercivity and exchange coupling between the hard and soft phase. (copyright 2016 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  19. Sinergias entre Luxemburgo, ACNUR y Skype

    OpenAIRE

    Bertout, Antoine; Bourcy, Marc de; Faisal, Mohammad

    2011-01-01

    Una reciente asociación estratégica entre ACNUR, el Gobierno de Luxemburgo y el proveedor de software para comunicaciones Skype permite al personal de ACNUR en zonas de condiciones de vida difíciles mantenerse en contacto con sus familiares y amigos. Los socios evalúan de qué forma podría adaptarse la tecnología para otras organizaciones humanitarias.

  20. Experimental and theoretical study about sulfur deactivation of Ni/ CeO{sub 2} and Rh/CeO{sub 2} catalysts

    Energy Technology Data Exchange (ETDEWEB)

    Ocsachoque, Marco A., E-mail: ocmarco@quimica.unlp.edu.ar [Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr Jorge J. Ronco”, (CONICET, CCT La Plata), Departamento de Química, Facultad de Cs Exactas (UNLP), Calle 48 N° 257, 1900 La Plata (Argentina); Eugenio Russman, Juan I.; Irigoyen, Beatriz [Instituto de Tecnologías del Hidrógeno y Energías Sostenibles (ITHES), Departamento de Ingeniería Química, Facultad de Ingeniería (UBA), Buenos Aires (Argentina); Gazzoli, Delia [Dipartimento di Chimia, Universitá di Roma “La Sapienza”, Roma (Italy); González, María G. [Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr Jorge J. Ronco”, (CONICET, CCT La Plata), Departamento de Química, Facultad de Cs Exactas (UNLP), Calle 48 N° 257, 1900 La Plata (Argentina)

    2016-04-01

    Sulfur deactivation of Ni/CeO{sub 2} and Rh/CeO{sub 2} catalysts were examined through an experimental and theoretical study. These catalysts were characterized by N{sub 2} adsorption, X-ray diffraction, temperature programmed reaction, thermogravimetric analysis, Uv–visible spectroscopy and Raman spectroscopy, and tested under the methane dry reforming reaction in the presence of H{sub 2}S. On the other hand, different possible interactions of sulfur with Rh, Ni or surface sites of the CeO{sub 2} support were evaluated by performing energy calculations with the density functional theory (DFT). Overall, the results indicate that tolerance to sulfur of Rh/CeO{sub 2} catalyst is higher than that of Ni/CeO{sub 2} one. In this sense, TPR measurements show that reduction of CeO{sub 2} is promoted by the presence of Rh. This effect, probably caused by hydrogen spillover to CeO{sub 2} support during the reduction of RhO{sub x} species, could be linked to a high oxygen donation capacity of Rh/CeO{sub 2} catalysts. Accordingly, the O{sup 2−} species existing on Rh/CeO{sub 2} catalysts, revealed by Raman spectra of these samples, could favor sulfur oxidation and prevent Rh–S interactions. Likewise, the theoretical calculations show that desorption of S–O species from Rh/CeO{sub 2} system is more favorable than that from Ni/CeO{sub 2} one. Therefore, our experimental and theoretical study about sulfur deactivation of Ni and Rh supported on CeO{sub 2} allow us to postulate that Rh can help to desorb SO{sub x} species formed on the support, retarding sulfur poisoning of the Rh/CeO{sub 2} catalysts. - Highlights: • CeO{sub 2} support can act as a sacrifice trap decreasing sulfur poisoning. • Theoretical calculations indicate an important nickel affinity with sulfur. • Rh would favor desorption of S–O species formed on the support. • The O{sup 2−} species present on the Rh–CeO{sub 2} sample favor sulfur removal.

  1. Method for removing trace contaminants from multicurie amounts of 144Ce

    International Nuclear Information System (INIS)

    Wagner, J.A.; Kanapilly, G.M.

    1976-01-01

    Removal of contaminants from stock solutions of 144 Ce(III) was required for large quantities of 144 Ce prior to incorporation into fused aluminosilicate particles for inhalation toxicology studies. Since available procedures for purification of 144 Ce could not be readily adapted to our laboratory conditions and requirements, a simple procedure was developed to purify 144 Ce in multicurie quantities of 144 Ce(III). This procedure consists of separation of 144 Ce from contaminants by precipitation and filtrations at different pH. Its simplicity and efficacy in providing a stock solution that would readily exchange into montmorillonite clay was demonstrated when it was used during the preparation of large amounts of 144 Ce in fused aluminosilicate particles

  2. Facile preparation of self-healing superhydrophobic CeO2 surface by electrochemical processes

    Science.gov (United States)

    Nakayama, Katsutoshi; Hiraga, Takuya; Zhu, Chunyu; Tsuji, Etsushi; Aoki, Yoshitaka; Habazaki, Hiroki

    2017-11-01

    Herein we report simple electrochemical processes to fabricate a self-healing superhydrophobic CeO2 coating on Type 304 stainless steel. The CeO2 surface anodically deposited on flat stainless steel surface is hydrophilic, although high temperature-sintered and sputter-deposited CeO2 surface was reported to be hydrophobic. The anodically deposited hydrophilic CeO2 surface is transformed to hydrophobic during air exposure. Specific accumulation of contaminant hydrocarbon on the CeO2 surface is responsible for the transformation to hydrophobic state. The deposition of CeO2 on hierarchically rough stainless steel surface produces superhydrophobic CeO2 surface, which also shows self-healing ability; the surface changes to superhydrophilic after oxygen plasma treatment but superhydrophobic state is recovered repeatedly by air exposure. This work provides a facile method for preparing a self-healing superhydrophobic surface using practical electrochemical processes.

  3. Luminescent and scintillation properties of the Ce3+ doped Y3−xLuxAl5O12:Ce single crystalline films

    International Nuclear Information System (INIS)

    Zorenko, Yu.; Gorbenko, V.; Zorenko, T.; Popielarski, P.; Mosińska, L.; Fedorov, A.

    2016-01-01

    The work is related to the investigation of scintillation and luminescent properties of single crystalline films (SCF) of solid solutions of Ce 3+ doped Y 3−x Lu x Al 5 O 12 :Ce garnets with x value in the 0–3 range. We have shown a possibility of realization of high-energy shift of the Ce 3+ ion emission spectrum in these garnets up to 22 nm. We have also found that the light yield of the radioluminescence under α-particle excitation of LuAG:Ce SCF can exceed by 1.3 times the corresponding values for the YAG:Ce SCF counterpart. For investigation of the luminescent properties of Y 3−x Lu x Al 5 O 12 :Ce SCF at different x values the luminescent spectroscopy of these SCFs under excitation by synchrotron radiation in the VUV range was performed. - Highlights: • Single crystalline films of Y 3−x Lu x Al 5 O 12 garnets at x=0–3.0 were grown by LPE method onto YAG substrates. • Lattice constant of Y 3−x Lu x Al 5 O 12 :Ce film and the film/substrate misfit changed linearly with increasing of Lu content in the x=0–3.0 range. • High-energy shift of the Ce 3+ emission up to 22 nm in Y 3−x Lu x Al 5 O 12 film with increasing of Lu content in the x=0–3.0 range. • Light yield of Y 3−x Lu x Al 5 O 12 :Ce film decreases in the x=0–1.8 range and increases in the x=1.8–3.0 range. • Scintillation LY of Lu 3 Al 5 O 12 :Ce film can exceed by 1.3 times the LY for YAG:Ce film counterpart.

  4. A desnecessidade do trabalho entre pescadores artesanais

    Directory of Open Access Journals (Sweden)

    Cristiano Wellington Norberto Ramalho

    2015-04-01

    Full Text Available As relações socioculturais e econômicas, entre alguns grupos de pescadores artesanais, não colocam como entes antagônicos trabalho e tempo livre. Do contrário, tais relações celebram aproximações entre saber-fazer pesqueiro, lazer e vida, formando e conformando um todo societário. Inseridos nesse quadro, estão os pescadores artesanais do mar-de-fora da praia de Suape, no município do Cabo de Santo Agostinho, litoral sul de Pernambuco, distante 50 km de Recife. Este artigo busca desvelar a mencionada moral do trabalho e do tempo livre no fazer cotidiano de pescadores dessa Praia, com base na pesquisa etnográfica e na história de vida de 13 pescadores. No geral, identificou-se que há uma moral do trabalho que se confunde à moral do tempo livre, pois o cerceamento de uma delas representa limites à outra. Assim, para esses homens, definir o que é um ser liberto ou cativo liga-se ao encontro indissociável, em termos práticos e simbólicos, entre as referidas morais, o que é essencial para classificar o fazer-se pescador artesanal em seu sentido pleno fundamentado na desnecessidade do trabalho.

  5. Measurement of Ce(IV) Concentration in Foam Decontaminant containing Fluorosurfactant

    Energy Technology Data Exchange (ETDEWEB)

    Jung, Chong Hun; Yang, H. B.; Yoon, I. H.; Choi, W. K.; Moon, J. K. [KAERI, Daejeon (Korea, Republic of); Lee, J. S. [Gachon University, Seongnam (Korea, Republic of)

    2016-05-15

    To improve the stability of the foam, surfactants and inorganic materials such as nanoparticles can be added. A nanoparticle-based foam decontaminant is composed of a surfactant and nanoparticles for the generation and maintenance of foam, and a chemical decontamination agent made of Ce(IV) dissolved in nitric acid. Ce(IV) will be reduced to Ce(III) through the decontamination process. Oxidizing the cerium (III) can be reused as a decontamination agent, Ce(IV). Oxidation treatment technology by ozone uses its strong oxidizing power. It can be regarded as an environmentally friendly process, because ozone cannot be stored and transported like other industrial gases (because it quickly decays into diatomic oxygen) and must therefore be produced on site, and used ozone can be decomposed immediately. A concentration analysis of Ce(IV) in foam decontaminant containing a surfactant is necessary prior to the derivation of optimal conditions for the regeneration of Ce(III) through ozonation treatment. A UV spectrometric method using the absorbance or potentiometric method with a potential difference in Ce(III)/Ce(IV), or a potentiometric titration method using Fe (II), can be used for a Ce(IV) concentration analysis. A UV spectrometric method has a problem receiving the influence of the surfactant, and a potentiometric method is difficult to use because of the problem of an insignificant change in the potential difference value of the Ce(III)/Ce(IV). Thus, the present study was undertaken to determine whether the potentiometric titration method can be used for an analysis of the Ce(IV) concentration in the nanoparticle-based foam decontaminant containing surfactant. It will be effectively used for the Ce(IV) concentration measurement, in relation to the subsequent research on the derivation of optimal conditions for the regeneration of Ce(III) through ozonation treatment.

  6. Ultraviolet and near-infrared luminescence of LaBO3:Ce3+,Yb3+

    Science.gov (United States)

    Wei, Heng-Wei; Shao, Li-Ming; Jiao, Huan; Jing, Xi-Ping

    2018-01-01

    Ce3+ or Yb3+ singly doped LaBO3 and Ce3+-Yb3+ co-doped LaBO3 were prepared by conventional solid state reactions at 1100 °C and their photoluminescence (PL) properties were investigated. The emission spectrum of LaBO3:Ce3+,Yb3+ contains both the Ce3+ ultraviolet (UV) emissions (355 nm and 380 nm) and the Yb3+ near infrared (NIR) emission (975 nm) when excited by the UV light at 270 nm. By using the data of the Ce3+ decay curves and the PL intensities of both Ce3+ and Yb3+, the energy transfer efficiency (η) from Ce3+ to Yb3+, the actual energy transfer efficiency (AE) and the quantum efficiency (Q) of the Yb3+ emission were calculated. In the Ce3+-Yb3+ co-doped LaBO3, Ce3+ can transfer its absorbed energy to Yb3+ efficiently (η can be over 60%), and Yb3+ shows the Q value over 50% when it accepts the energy from Ce3+, which results in the low AE value ∼30%. The energy transfer process from Ce3+ to Yb3+ may be understood by the charge transfer mechanism: Ce3+ + Yb3+ ↔ Ce4+ + Yb2+. Particularly the Ce3+-Yb3+ co-doped LaBO3 phosphor gives the emissions mainly in the UV range and the NIR range with a portion of visible emissions in eye-insensitive range. This unique property may be suitable for applications in anti-counterfeiting techniques and public security affairs.

  7. Electro-regeneration of Ce(IV) in real spent Cr-etching solutions

    International Nuclear Information System (INIS)

    Chen, Te-San; Huang, Kuo-Lin

    2013-01-01

    Highlights: • An electrochemical process is used to regenerate Ce(IV) in real (hazardous) spent TFT-LCD Cr-etching solutions. • The Ce(IV) yield on tested anodes was in order BDD > Pt > DSA. • A Neosepta CMX separator was better than Nafion ones to be used in the process. • The activation energy on Pt was 10.7 kJ/mol. • The obtained parameters are useful to design reactors for 100% Ce(IV) regeneration in real spent Cr-etching solutions. -- Abstract: This paper presents the electro-regeneration of Ce(IV) in real (hazardous) spent thin-film transistor liquid-crystal display (TFT-LCD) Cr-etching solutions. In addition to Ce(III) > Ce(IV) in diffusivity, a quasi-reversible behavior of Ce(III)/Ce(IV) was observed at both boron-doped diamond (BDD) and Pt disk electrodes. The Ce(IV) yield on Pt increased with increasing current density, and the best current efficiency (CE) was obtained at 2 A/2.25 cm 2 . The performance in terms of Ce(IV) yield and CE of tested anodes was in order BDD > Pt > dimensional stable anode (DSA). At 2 A/2.25 cm 2 on Pt and 40 °C for 90 min, the Ce(IV) yield, CE and apparent rate constant (k) for Ce(III) oxidation were 81.4%, 21.8% and 3.17 × 10 −4 s −1 , respectively. With the increase of temperature, the Ce(IV) yield, CE, and k increased (activation energy = 10.7 kJ/mol), but the specific electricity consumption decreased. The Neosepta CMX membrane was more suitable than Nafion-117 and Nafion-212 to be used as the separator of the Ce(IV) regeneration process. The obtained parameters are useful to design divided batch reactors for the Ce(IV) electro-regeneration in real spent Cr-etching solutions

  8. 5. Interpréter les faits. Dialogue entre histoire et droit

    Directory of Open Access Journals (Sweden)

    Manuela Albertone

    2017-08-01

    Full Text Available Droit et histoire se mêlent dans le parcours intellectuel de Michel Troper, réputé parmi les juristes pour sa théorie réaliste de l’interprétation, apprécié par les historiens notamment pour ses travaux sur la séparation des pouvoirs et la Constitution de l’an III. La valeur de l’interdisciplinarité est une évidence et une nécessité pour ce juriste pour qui la curiosité pour les autres disciplines et le dialogue entre les spécialistes de différentes formations font partie de la recherche et de son propre parcours d’éducation. Dans le dialogue entre Albertone et Troper – le premier d'une série que notre Journal va publier –, autour du langage et des mots, droit et histoire se rapprochent: reconstruire le contexte, saisir la valeur et l’utilisation des mots et des concepts par les acteurs du passé sont autant d’éléments essentiels pour le travail aussi bien celui des juristes que celui des historiens.

  9. Glass forming ability of the Al-Ce-Ni system; Avaliacao da capacidade de formacao vitrea do sistema Al-Ce-Ni

    Energy Technology Data Exchange (ETDEWEB)

    Triveno Rios, C. [Engenharia Mecanica, Universidade Federal de Mato Grosso, Rondonopolis, MT (Brazil)], e-mail: triveno@ufmt.br; Surinach, S.; Baro, M.D. [Departamento de Engenharia de Materiais - Universidade Federal de Sao Carlos, SP (Brazil); Bolfarini, C.; Botta, W.J.; Kiminami, C.S. [Departamento de Fisica da Universidade Autonoma de Barcelona, Bellaterra (Spain)

    2010-07-01

    In the present work, the glass forming ability (GFA) and its compositional dependence on Al-Ni-Ce system alloys were investigated in function of several thermal parameters. Rapidly quenched Al{sub 85}Ni{sub 15}-{sub X}Ce{sub X} (X=4,5,6,7,10), Al{sub 90}Ni{sub 5}Ce{sub 5}, Al{sub 89}Ni{sub 2}.{sub 4}Ce{sub 8}.{sub 6}, Al{sub 80}Ni{sub 15.6}Ce{sub 4}.{sub 4} and Al{sub 78}Ni{sub 18.5}Ce{sub 3.5} amorphous ribbons were produced by melt-spinning and the structural transformation during heating was studied using a combination of X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results showed that the GFA and the thermal stability in the Al-rich corner of Al- Ni-Ce system alloys were enhanced by increasing the solute content and specifically the Ce content (author)

  10. Preparation and luminescence properties of Ce3+ and Ce3+/Tb(3+)-activated Y4Si2O7N2 phosphors.

    Science.gov (United States)

    Xia, Zhiguo; Wu, Weiwei

    2013-09-28

    Ce(3+) and Ce(3+)/Tb(3+)-activated Y4Si2O7N2 phosphors are synthesized by the solid-state method, which can be efficiently excited by near ultraviolet (UV) light emitting diode (LED) chips. The PL spectrum of Y4Si2O7N2:Ce(3+) shows a broad hump between 380 and 650 nm, assigned to the electron transition from the 4f energy level to different 5d sub levels of the Ce(3+) ions at different Y(3+) sites. The color of the Y4Si2O7N2:Ce(3+) phosphor can shift from blue to green by introducing Tb(3+). In addition, the energy transfer process from Ce(3+) to Tb(3+) in the Y4Si2O7N2 host was investigated and discussed in terms of both the luminescence spectra and decay curves. The energy transfer critical distance has been calculated and evaluated by the concentration quenching method. Therefore, the Ce(3+) and Ce(3+)/Tb(3+)-activated Y4Si2O7N2 phosphors can serve as key materials for phosphor-converted white-light UV-LEDs.

  11. Transitions between localized and itinerant antiferromagnetism in the Ce(Pb,In) sub 3 and Ce(Pb,Tl) sub 3 systems

    Energy Technology Data Exchange (ETDEWEB)

    Rahman, S; Timlin, J; Crow, J E; Mihalisin, T; Schlottmann, P [Temple Univ., Philadelphia, PA (United States)

    1990-01-01

    CePb{sub 3} is an itinerant heavy fermion antiferromagnetic displaying an incommensurate magnetic structure and an extremely small ordered moment. CeIn{sub 3} and CeTl{sub 3}, on the other hand are well-localized, simple antiferromagnets with the full moments expected for crystal field doublet Ce{sup 3+} ion systems. The authors have performed specific heat, sysceptibility and resistivity measurements for both the Ce(Pb,In){sub 3} and Ce(Pb,Tl){sub 3} systems. These systems remain cubic Cu{sub 3}Au structures across the entire series. They display extremely interesting T{sub N} behavior which suggests that a continuous transition from itinerant to localized antiferromagnetic behavior occurs for the Ce(Pb,Tl){sub 3} system. In the Ce (Pb,In){sub 3} system both types of antiferromagnetism are present but they are separated by a concentration range ({approximately}10-40% Pb) over which antiferromagnetism does not exist. The behavior of these systems cannot be accounted for by a Kondo necklace approach that neglects the coherence of a heavy fermion lattice and resulting itinerant antiferromagnetism.

  12. Effects of Ce3+ concentration, beam voltage and current on the cathodoluminescence intensity of SiO2: Pr3+–Ce3+ nanophosphor

    CSIR Research Space (South Africa)

    Mhlongo, GH

    2011-02-01

    Full Text Available SiO2:Pr3+–Ce3+ phosphor powders were successfully prepared using a sol–gel process. The concentration of Pr3+ was fixed at 0.2 mol% while that of Ce3+ was varied in the range of 0.2–2 mol%. High resolution transmission electron microscopy (HRTEM...

  13. Study of magnetic properties of TGa6 with T = Ce, Pr, Nd, Tb, Ho, Dy and of solid solutions Ce(Ga1-x Alx)2

    International Nuclear Information System (INIS)

    Jerjini, M.

    1987-10-01

    At low temperature TGa 6 compounds are ordered with a Neel temperature of about 10 K. Magnetic structures are antiferromagnetic for T = Pr or Nd or modulated for T = Tb, Ho or Dy. Ce presents an abnormal behavior in CeGa 6 . Neutron inelastic scattering allows the determination of energy levels in the crystal field of cerium ion and evidences hybridation of 4f and valence electrons. Three magnetic transitions for T 6 . Study of CeGa 6 and solid solutions. Ce(Ga (1-x) Al x ) 2 shows that aluminium insertion reinforces the Kondo effect. For x = O.1 an incommensurable structure subsists at very low temperature. CeGa 2 is ordered with 3 magnetic structures. Magnetic moment is reduced with Al. The study of crystal field by neutron scattering shows that hybridation effects are more important for the compound with x = 0.1 [fr

  14. Tunable colorimetric performance of Al{sub 2}O{sub 3}-YAG:Ce{sup 3+} eutectic crystal by Ce{sup 3+} concentration

    Energy Technology Data Exchange (ETDEWEB)

    Sai, Qinglin, E-mail: saiql@siom.ac.cn; Xia, Changtai, E-mail: xia_ct@siom.ac.cn

    2017-06-15

    Ce-doped Al{sub 2}O{sub 3}-YAG eutectics with different percentage of Ce were successfully grown by the optical floating zone technique. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to investigate the structure. The results show that they have typical eutectic structure of interpenetrating sapphire and garnet phases with the tens of microns lamella spacing. The photoluminescence spectra of the eutectics showed that they have wide excitation band, and samples with 1.6 mol% Ce-doped has the highest emission intensity. The eutectic-packaged LED has high luminous efficiency and its color can be modulated by changing Ce concentration. The results reveal that Ce-doped Al{sub 2}O{sub 3}-YAG eutectic is a promising phosphor for white LED applications.

  15. Pseudogenes regulate parental gene expression via ceRNA network.

    Science.gov (United States)

    An, Yang; Furber, Kendra L; Ji, Shaoping

    2017-01-01

    The concept of competitive endogenous RNA (ceRNA) was first proposed by Salmena and colleagues. Evidence suggests that pseudogene RNAs can act as a 'sponge' through competitive binding of common miRNA, releasing or attenuating repression through sequestering miRNAs away from parental mRNA. In theory, ceRNAs refer to all transcripts such as mRNA, tRNA, rRNA, long non-coding RNA, pseudogene RNA and circular RNA, because all of them may become the targets of miRNA depending on spatiotemporal situation. As binding of miRNA to the target RNA is not 100% complementary, it is possible that one miRNA can bind to multiple target RNAs and vice versa. All RNAs crosstalk through competitively binding to miRNAvia miRNA response elements (MREs) contained within the RNA sequences, thus forming a complex regulatory network. The ratio of a subset of miRNAs to the corresponding number of MREs determines repression strength on a given mRNA translation or stability. An increase in pseudogene RNA level can sequester miRNA and release repression on the parental gene, leading to an increase in parental gene expression. A massive number of transcripts constitute a complicated network that regulates each other through this proposed mechanism, though some regulatory significance may be mild or even undetectable. It is possible that the regulation of gene and pseudogene expression occurring in this manor involves all RNAs bearing common MREs. In this review, we will primarily discuss how pseudogene transcripts regulate expression of parental genes via ceRNA network and biological significance of regulation. © 2016 The Authors. Journal of Cellular and Molecular Medicine published by John Wiley & Sons Ltd and Foundation for Cellular and Molecular Medicine.

  16. Catalytic reforming of toluene as tar model compound: effect of Ce and Ce-Mg promoter using Ni/olivine catalyst.

    Science.gov (United States)

    Zhang, Ruiqin; Wang, Huajian; Hou, Xiaoxue

    2014-02-01

    Tar produced by biomass gasification as a route of renewable energy must be removed before the gas can be used. This study was undertaken using toluene as a model tar compound for evaluating its steam reforming conversion with three Ni-based catalysts, Ni/olivine, Ni-Ce/olivine and Ni-Ce-Mg/olivine. Effects of Ce and Mg promoters on the reaction activity and coke deposition were studied. Overall the performance of Ce and Mg promoted Ni/olivine catalysts is better than that of only Ce promoter and Ni/olivine alone. The experimental results indicate that Ni-Ce-Mg/olivine catalysts could improve the resistance to carbon deposition, enhance energy gases yield and resist 10ppm H2S poison at 100mLmin(-1) for up to 400min. Furthermore, the activity of catalysts was related to the steam/carbon (S/C) ratios; at S/C ratio=5, T=790°C, space velocity=782h(-1) and t=2h, the Ni-Ce-Mg/olivine system yielded 89% toluene conversion, 5.6Lh(-1) product gas rate, 62.6mol% H2 content and 10% (mol useful gas mol(-1) toluene) energy yield. Moreover, at low S/C ratio, it had higher reaction activity and better ability to prevent coking. There is a small amount of carbon deposition in the form of amorphous carbon after 7h. Various characterization techniques such as XRD, FTIR and thermogravimetric were performed to investigate the coke deposition of Ni/olivine, Ni-Ce/olivine and Ni-Ce-Mg/olivine. It is suggested that 3% Ni-1% Ce-1% Mg/olivine was the most promising catalyst due to its minimum coke amount and the lower activation energy of coke burning. Copyright © 2014. Published by Elsevier Ltd.

  17. Decay pattern of the Pygmy Dipole Resonance in 140Ce

    Science.gov (United States)

    Isaak, J.; Löher, B.; Savran, D.; Aumann, T.; Beller, J.; Cooper, N.; Derya, V.; Duchêne, M.; Endres, J.; Fiori, E.; Kelley, J. H.; Knörzer, M.; Pietralla, N.; Ponomarev, V. Yu.; Romig, C.; Scheck, M.; Scheit, H.; Silva, J.; Tonchev, A. P.; Tornow, W.; Weller, H. R.; Werner, V.; Zilges, A.; Zweidinger, M.

    2015-05-01

    The decay behavior of low-lying dipole states in 140Ce was investigated exploiting the γ3-setup at the HIγS facility using quasi-monochromatic photon beams. Branching ratios of individual excited states as well as average branching ratios to low-lying states have been extracted using γ - γ coincidence measurements. The comparison of the average branching ratios to QPM calculations shows a remarkable agreement between experiment and theory in the energy range from 5.0 to 8.5 MeV.

  18. Detailed spectroscopy of the normally deformed states in 132Ce

    International Nuclear Information System (INIS)

    Paul, E.S.; Gizon, A.; Gizon, J.; Santos, D.; Nyako, B.M.; O'Brien, N.J.; Parry, C.M.; Wadsworth, R.

    1997-01-01

    High-spin states have been studied in 132 Ce produced in the 100 Mo( 36 S,4nγ) reaction using the EUROGAM II spectrometer. The structure of the normally deformed states (β 2 ∝0.2) has been investigated. Eight ΔI=2 bands and three ΔI=1 bands have been identified and the level scheme extended up to spin and parity (40 + ) at an excitation energy 19.79 MeV. The results are interpreted with the aid of Woods-Saxon cranking calculations, which suggest a variety of triaxial (γ) shapes in this nucleus stabilised by specific active quasiparticle orbitals. (orig.)

  19. Fast humidity sensors based on CeO2 nanowires

    International Nuclear Information System (INIS)

    Fu, X Q; Wang, C; Yu, H C; Wang, Y G; Wang, T H

    2007-01-01

    Fast humidity sensors are reported that are based on CeO 2 nanowires synthesized by a hydrothermal method. Both the response and recovery time are about 3 s, and are independent of the humidity. The sensitivity increases gradually as the humidity increases, and is up to 85 at 97% RH. The resistance decreases exponentially with increasing humidity, implying ion-type conductivity as the humidity sensing mechanism. A model based on the morphology and surface energy of the nanowires is given to explain these results further. Our experimental results indicate a pathway to improving the performance of humidity sensors

  20. Microscopic IBM-1 description of collective states in 128Ce

    Directory of Open Access Journals (Sweden)

    Mikhajlov V. M.

    2012-12-01

    Full Text Available Microscopical quasiparticle theory is developed to calculate the IBM-1 parameters entering the Hamiltonian and E2–operator. The theory takes into account the impact of noncollective phonons and predicts alterations of the superconducting properties along the excitation spectrum, whereas the most collective phonon (the image of the IBM d-boson is practically invariable. Calculations of the energy spectrum and probabilities of E2–transitions (without effective nucleon charges were performed for 128Ce. The results obtained are in satisfactory agreement with experimental data.