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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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 ...

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

Fortalezas internas y externas de adolescentes que no consumen alcohol

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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...

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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

Produção orgânica: predileção de consumo e potencialidades do seguimento em Fortaleza – CE

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

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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

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

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

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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

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

Directory of Open Access Journals (Sweden)

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

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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

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

OpenAIRE

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...

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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

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

Directory of Open Access Journals (Sweden)

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

PREVALÊNCIA DE ENTEROPARASITAS NA REGIÃO METROPOLITANA DE FORTALEZA, CEARÁ

Directory of Open Access Journals (Sweden)

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 Fortaleza – CE. 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. 

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

Directory of Open Access Journals (Sweden)

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.

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

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.

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.

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

Directory of Open Access Journals (Sweden)

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

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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

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

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

Directory of Open Access Journals (Sweden)

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

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

As cidades da juventude em Fortaleza

Directory of Open Access Journals (Sweden)

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.

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

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

Directory of Open Access Journals (Sweden)

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.

Determinants of tuberculosis transmission and treatment abandonment in Fortaleza, Brazil

Directory of Open Access Journals (Sweden)

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

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

Science.gov (United States)

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

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)

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

CONDUTAS DE ENFERMEIROS NO TRATAMENTO DE FERIDAS NUMA UNIDADE DE TERAPIA INTENSIVA

Directory of Open Access Journals (Sweden)

Rosa Aparecida Nogueira Moreira

2009-01-01

Full Text Available Se trata de un estudio exploratorio, con datos recogidos entre los meses de enero y febrero del 2007, en una unidad de vigilancia intensiva de Fortaleza – CE. La finalidad del estudio fue verificar la conducta de enfermeros de un hospital público de Fortaleza-CE sobre el tratamiento de heridas. Los datos se recogieron a través del registro de un formulario estructurado. Todos los enfermeros afirmaron que realizaban el registro de los cuidados y adoptaban algún criterio de evaluación, específicos para las heridas. Sobre los criterios de evaluación se destacaron: la presencia de exudado (56,2%, la amplitud, profundidad y tipo de tejido, todos con 43,7% de las respuestas. Cerca de 93,7% de los investigados consideran importante el trabajo multidisciplinario en el tratamiento de heridas. Se verificó que los enfermeros conocen bien los métodos terapéuticos en el cuidado de heridas.

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

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

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

Directory of Open Access Journals (Sweden)

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. 

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.

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

Directory of Open Access Journals (Sweden)

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

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

Directory of Open Access Journals (Sweden)

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”.

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

Directory of Open Access Journals (Sweden)

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.

Las fortalezas en personas mayores como factor que aumenta el bienestar

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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

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

Directory of Open Access Journals (Sweden)

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.

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...

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.

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

Directory of Open Access Journals (Sweden)

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.

DANO OCUPACIONAL NA UNIDADE DE TERAPIA INTENSIVA NEONATAL: A PERCEPÇÃO DA ENFERMEIRA

OpenAIRE

MARIA ALVANI DIAS PEDROZA; ANTONIA DO CARMO SOARES CAMPOS; MÁRCIA MARIA COELHO OLIVEIRA

2006-01-01

Se trata de estudio cuantitativo, exploratorio y descriptivo, con el objetivo de conocer la percepción de las enfermeras con respecto a la influencia del desempeño en la asistencia de enfermería y en el ambiente laboral. Tuvo por escenario la Unidad de Terapia Intensiva Neonatal (UTIN) de una maternidad escuela, en Fortaleza-CE. Recogimos los datos entre agosto y septiembre de 2004 a través de un cuestionario estructurado en parte, aplicado a 24 enfermeras activas. Verificamos que la mayor co...

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.

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

Directory of Open Access Journals (Sweden)

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.

O uso do clítico na fala culta de Fortaleza

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

El estudio científico de las fortalezas trascendentales desde la Psicología Positiva

Directory of Open Access Journals (Sweden)

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.

"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.

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.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

IDOSOS COM ACIDENTE VASCULAR ENCEFÁLICO ISQUÊMICO: CARACTERIZAÇÃO SOCIODEMOGRÁFICA E FUNCIONAL

Directory of Open Access Journals (Sweden)

Chrystiany Plácido de Brito Vieira

2012-01-01

Full Text Available El objetivo fue describir las características sociodemográficas y funcionales del anciano después del accidente cerebrovascular isquémico. Estudio descriptivo, cuantitativo, con muestra de 52 ancianos con accidente cerebrovascular, en servicio de salud de Fortaleza-CE-Brasil, entre mayo y agosto de 2009. Se calcularon media y desvío padrón para variables continuas y prueba de chi- cuadrado para comparar proporciones en las variables categóricas. Los resultados mostraron que 37 (71,2% estaban entre 60 y 79 años de edad, 43 (82,7% vivían en Fortaleza, 30 (57,7% eran casados, con renta familiar de 2.5 sueldos mínimos y 16 (30,8% tenían antecedentes de enfermedad en la familia. La proporción de ancianos se distribuyó de manera uniforme en las fajas de discapacidad y dependencia (p = 0,972 yp = 0,780. El conocimiento del perfil de ancianos es fundamental pues la calidad de vida de ellos tiene relación cercana con la realidad social, económica y con la capacidad funcional.

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

Directory of Open Access Journals (Sweden)

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.

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

Directory of Open Access Journals (Sweden)

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.

REESTRUTURAÇÃO PRODUTIVA, TRABALHO E TRANSFORMAÇÕES NO ESPAÇO METROPOLITANO DE FORTALEZA

Directory of Open Access Journals (Sweden)

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.

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

O Eu e o Outro: a constituiÃÃo da identidade polÃtica nos movimentos sociais urbanos

OpenAIRE

Gloria Maria dos Santos DiÃgenes

1989-01-01

Esta dissertaÃÃo tem como pressuposto a ideia de que a identidade polÃtica dos movimentos sociais urbanos se constitui e se reconstitui processualmente. Apoia-se em pesquisa realizada com as Comunidades Eclesiais de Base (CEBs) na favela do Lagamar, em Fortaleza-CE. O Lagamar foi tomado como âcaso exemplarâ no que tange ao conjunto de relaÃÃes entre estado e movimentos sociais. Essa dissertaÃÃo focaliza a luta por moradia, equipamentos e serviÃos urbanos como veÃculo a partir do qual se proce...

Estado nutricional de lactentes em áreas periféricas de Fortaleza

Directory of Open Access Journals (Sweden)

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.

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.

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

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

Directory of Open Access Journals (Sweden)

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.

As principais alterações dermatológicas em pacientes obesos Major dermatological changes in obese patients

Directory of Open Access Journals (Sweden)

Rosimeri da Silva Castanho Mendonça

2011-03-01

Full Text Available INTRODUÇÃO: A obesidade é considerada grave doença crônica que vem atingindo proporções mundiais gerando transtornos sérios para a saúde pública. No Brasil, a prevalência desta doença denota aumento progressivo em relação ao número de pessoas com sobrepeso e/ou obesidade. Apesar disso, as manifestações dermatológicas da obesidade têm sido pouco estudadas. OBJETIVO: Abordar as dermatoses que mais acometem pacientes obesos e seu tratamento, principalmente na aplicação adequada da fisioterapia dermatofuncional. MÉTODO: Revisão da literatura, entre 2000 e 2010, de artigos indexados nas bases Medline/Pubmed, Scielo e Lilacs, livros e monografias das bibliotecas da Universidade de Fortaleza e Universidade Federal do Ceará, Fortaleza, CE, Brasil, cruzando os descritores obesidade, dermatose e fisioterapia. Foram reconhecidas como mais importantes as seguintes situações patológicas: estrias, celulite, acanthosis nigricans, acrocórdons, flacidez, úlcera e impetigo. Entre as formas de tratamento deuse destaque à atuação da fisioterapia dermatofuncional. CONCLUSÃO: O tratamento das dermatoses por meio da fisioterapia dermatofuncional é possível podendo trazer consigo resultados que satisfaçam a expectativa dos pacientes e proporcionando-lhes melhor qualidade de vida.INTRODUCTION: Obesity is a serious chronic disease that has reached global proportions causing problems to public health. In Brazil, the prevalence of this disease shows a progressive increase in the number of people with overweight or obesity. Nevertheless, the skin manifestations have not been well studied. OBJECTIVE: To analyse the dermatosis most affecting obese patients and its treatment, particularly in proper application of dermatological therapy. METHOD: Was made a literature review between 2000 and 2010 of articles published in Medline/ PubMed, SciELO and Lilacs, books and monographs of the libraries of the University of Fortaleza and the Federal

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...

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

Directory of Open Access Journals (Sweden)

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.

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.

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...

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

Directory of Open Access Journals (Sweden)

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.

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.

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 ...

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

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

Directory of Open Access Journals (Sweden)

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

Cuidado ao adolescente na atenção básica: necessidades dos usuários e sua relação com o serviço Atención al adolescente en atención primaria: necesidades de los usuarios y su relación con el servicio Adolescent treatment in primary care: needs of patients and their relations with service

Directory of Open Access Journals (Sweden)

Juliana Freitas Marques

2012-09-01

Full Text Available Estudo qualitativo, do tipo descritivo, com o objetivo de analisar o cuidado ao adolescente na atenção básica na visão destes sujeitos, enfocando necessidades e interação com os trabalhadores de saúde. Foram realizados grupos focais com 15 adolescentes, estudantes de uma escola pública de Fortaleza-CE, entre agosto e outubro de 2009. A análise dos dados agrupou núcleos temáticos, conforme a técnica de análise de conteúdo, da qual emergiram as categorias: necessidades dos adolescentes implicadas no acesso e acolhimento dos adolescentes no serviço de atenção básica: (desencontros; vínculo entre adolescentes e trabalhadores: ensejando confiabilidade no cuidado produzido. Os adolescentes relataram insatisfação quanto ao cuidado recebido, desvelando a relação superficial com a equipe de saúde. O cuidado mostrou-se ainda com pontos críticos entre as necessidades apontadas e a efetivação de ações que permitam incluir os adolescentes como sujeitos de direitos que necessitam de atenção semelhante a outros segmentos populacionais.Estudio cualitativo, descriptivo, con el objetivo de analizar la atención a los adolescentes en la atención primaria a la perspectiva de estos, centrándose en las necesidades e interacción con los trabajadores de salud. Los grupos focales se llevaron a cabo con 15 estudiantes de una escuela pública de Fortaleza-CE, entre agosto y octubre/2009. El análisis de los datos agrupó temas centrales, de acuerdo con la técnica de análisis del contenido, surgieron estas categorías: necesidades del adolescente implicados en el acceso; acogimiento del adolescente en la atención primaria; (des encuentros, vínculo entre trabajadores y adolescentes: confiabilidad en la atención producida. Los adolescentes informaron insatisfacción con la atención recibida, revelando la relación superficial con el equipo de salud. La atención estaba también con puntos críticos entre las necesidades apuntadas y la

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)

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

Directory of Open Access Journals (Sweden)

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

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...

[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.

Formação de Professores que Ensinam Matemática no Contexto da Cibercultura: Estudo em uma Escola UCA

Directory of Open Access Journals (Sweden)

Dennys Leite Maia

2014-09-01

Full Text Available Nas últimas décadas, com o advento das tecnologias digitais, a sociedade tem passado por uma reconfiguração. As relações entre tais tecnologias e a cultura contemporânea é definida como Cibercultura. Nessa perspectiva, este trabalho tem como objetivo analisar de que forma as interações mediadas pelas tecnologias digitais contribuem para o desenvolvimento profissional do professor de Matemática, particularmente sobre o laptop educacional, do Projeto Um Computador por Aluno (UCA. Como método de pesquisa, utilizamos elementos da Pesquisa Colaborativa. A pesquisa foi realizada em uma escola de Ensino Fundamental, participante do Projeto UCA, localizada em Fortaleza-CE.

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

Directory of Open Access Journals (Sweden)

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.

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 ...

Fatores de risco para a síndrome hipertensiva específica da gravidez - doi:10.5020/18061230.2009.p48

Directory of Open Access Journals (Sweden)

Zélia Maria de Sousa Araújo Santos

2012-01-01

Full Text Available Objetivo: Identificar os fatores de risco da Síndrome Hipertensiva Específica da Gestação (SHEG em gestantes acompanhadas em núcleo de atenção médica integrada. Método: Estudo exploratório-descritivo realizado com 100 gestantes acompanhadas no ambulatório de pré-natal do Núcleo de Atenção Médica Integrada (NAMI da Universidade de Fortaleza (UNIFOR, em Fortaleza-CE, independentemente de idade, estado civil e renda familiar. Os dados foram coletados por meio de entrevista estruturada, entre março e abril de 2008, organizados em tabelas e analisados com base na literatura pertinente. Resultados: A amostra pesquisada tinha idade entre 17 a 31 anos, cor parda, união estável, renda familiar de 1 a 2 salários mínimos, ensino fundamental; eram prendas do lar, seguiam o catolicismo e habitavam moradia própria. Houve o predomínio da multigestação, da primiparidade e do abortamento na faixa etária de 17 a 21 anos. As gestantes apresentavam os fatores de risco da SHEG - idades extremas; multiparidade; alteração de pressão arterial na gravidez atual e na anterior; história familiar e pregressa de pré-eclâmpsia e eclâmpsia, entre a terceira e quarta gestações; conflitos emocionais e gestação múltipla. Conclusões: Constatou-se a presença de fatores de risco para a SHEG na amostra investigada, exceto a obesidade e a paternidade diversa; entre os dados obstétricos dessas mulheres, predominaram multigestação, primiparidade e abortamento.

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...

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)

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.

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.

CULTURA DE APRENDIZAGEM E DESEMPENHO ORGANIZACIONAL EM OSCIPS

Directory of Open Access Journals (Sweden)

Sérgio Chaves Arruda

2015-07-01

Full Text Available O estudo objetiva analisar a relação entre a cultura de aprendizagem e o desempenho em uma organização da sociedade civil de interesse público (OSCIP na cidade de Fortaleza/CE, no tocante ao desempenho financeiro e do conhecimento, com suporte nas percepções dos variados agentes da organização. A base teórica são os fatores definidos por Marsick e Watkins (2003, acerca da relação entre a cultura de aprendizagem e o desempenho organizacional. Para isso, utilizou-se a metodologia quantitativa de pesquisa de natureza descritiva. O questionário utilizado junto aos 211 participantes da pesquisa foi o Dloq-A (YANG, 2003. Os resultados do estudo confirmam as hipóteses estabelecidas, indicando que a cultura de aprendizagem exerce significativa influência no desempenho organizacional no Instituto, na percepção dos respondentes.

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...

[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.

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; ...

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.

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.

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

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

Directory of Open Access Journals (Sweden)

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.

História reprodutiva de mulheres laqueadas Historia de la reproducción de mujeres con ligadura de trompas Reproductive history of women with tubal ligation

Directory of Open Access Journals (Sweden)

Ana Izabel Oliveira Nicolau

2010-10-01

Full Text Available OBJETIVO: Investigar o perfil obstétrico de mulheres laqueadas e a existência de associação com variáveis sóciodemográficas e sexuais. Métodos: Estudo quantitativo, retrospectivo e documental, desenvolvido em um Centro de Parto Natural em julho de 2008, na cidade de Fortaleza-CE. A amostra foi composta por 277 prontuários de usuárias laqueadas. RESULTADOS: Houve alto número de gestações associado à baixa escolaridade, início precoce da vida sexual e escassa utilização pregressa de métodos contraceptivos reversíveis, alta freqüência de partos cesarianos e abortos. CONCLUSÃO: O perfil encontrado reafirma a necessidade de fortalecer as orientações e a troca de informação no planejamento famíliar entre profissionais de saúde e a população atendida, estimular a participação masculina e garantir o acesso aos diversos métodos contraceptivos.OBJETIVO: Investigar el perfil obstétrico de mujeres con ligadura de trompas y la existencia de asociación con variables socio-demográficas y sexuales. MÉTODOS: Se trata de un estudio cuantitativo, retrospectivo y documental, desarrollado en un Centro de Parto Natural, en julio de 2008, en la ciudad de Fortaleza-CE. La muestra fue composta por 277 fichas médicas de pacientes que hicieron ligadura de las trompas. RESULTADOS: Hubo un alto número de gestaciones asociadas a: baja escolaridad, inicio precoz de la vida sexual, escasa utilización anterior de métodos contraceptivos reversibles, y alta frecuencia de partos por cesárea y abortos. CONCLUSIÓN: El perfil encontrado reafirma la necesidad de: fortalecer las orientaciones y el intercambio de informaciones en la planificación familiar entre profesionales de la salud y la población atendida; estimular la participación masculina; y, garantizar el acceso a los diversos métodos contraceptivos.OBJECTIVE: To investigate the obstetric profile of women with tubal ligation and the existence of association with socio

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

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.

Sleep and rest needs of seniors: a study grounded in the work of Henderson Necesidades relacionadas al sueño/reposo de ancianos: estudio fundamentado en Henderson Necessidades relacionadas ao sono/repouso de idosos: estudo fundamentado em Henderson

Directory of Open Access Journals (Sweden)

Jorge Wilker Bezerra Clares

2012-01-01

Full Text Available OBJECTIVE: To identify the sleep/rest needs of an elderly population cared for by the Family Health Strategy, based on Virginia Henderson's theoretical framework. METHOD: This descriptive, quantitative study was conducted from May to June, 2011 through the application of a questionnaire to 52 seniors living in an area covered by a Primary Health Care (PHC unit in Fortaleza, CE, Brazil. The data were analyzed using statistical software. RESULTS: the sleep disorders most frequently reported by the seniors were: sleeping less than four hours a night (84.6%, daytime sleepiness (71.2%, nighttime awakenings (71.2%, and the use of sleep medications (21.2%. Association was significant in relation to the variables: age (p=0.05, morbidities (p=0.02, smoking (p=0.01, and pain when moving (p=0.05. CONCLUSION: The sleep/rest needs of seniors were significantly associated with socio-economic factors and health conditions.OBJETIVO: Analizar las demandas de necesidades relacionadas al sueño/reposo de una población anciana en el ámbito de la Estrategia Salud de la Familia, fundamentada en el referencial de Virginia Henderson. MÉTODOS: Estudio de abordaje cuantitativo, descriptivo, realizado entre mayo y junio del 2011, mediante la aplicación de un formulario a 52 ancianos residentes en el área cubierta por una unidad básica de salud de Fortaleza-CE. Los datos fueron analizados por medio de un software estadístico. RESULTADOS: Los problemas de sueño más comunes entre los ancianos fueron: dormir menos de 4 horas por noche (84,6%, somnolencia diurna (71,2%, despertares nocturnos (71,2%, uso de medicamentos para dormir (21,2%. El análisis de asociación se mostró significativo con las variables, edad (p=0,05, presencia de morbilidad (p=0,02, tabaquismo (p=0,01 y dolor al moverse (p=0,05. CONCLUSIÓN: Las demandas para la necesidad de dormir/reposar en los ancianos estuvieron asociados significativamente a factores socioeconómicos y condiciones de salud

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.

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

Directory of Open Access Journals (Sweden)

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.

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

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.

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

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 ...

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

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.))

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

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 ...

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 Fortaleza – CE. 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.

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...

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

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

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.

Tendência da prevalência do diabetes melito autorreferido em adultos nas capitais brasileiras, 2006 a 2012

Directory of Open Access Journals (Sweden)

Deborah Carvalho Malta

Full Text Available OBJETIVO: avaliar a tendência da prevalência de diabetes melito autorreferido nas capitais brasileiras, entre 2006 e 2012. MÉTODOS: estudo ecológico com dados da Vigilância de Fatores de Risco e Proteção para Doenças Crônicas por Inquérito Telefônico (Vigitel referentes a adultos (≥18 anos, analisados por meio de regressão linear simples. RESULTADOS: no período estudado, houve tendência de aumento de 5,7% para 7,4% no conjunto da população adulta das capitais (p=0,008, de 4,8% para 6,5% entre homens (p=0,002 e de 6,4% para 8,1% entre mulheres (p=0,039; a elevação entre mulheres ocorreu em 9 capitais - Belém-PA, Belo Horizonte-MG, Curitiba-PR, Macapá-AP, Maceió-AL, Palmas-TO, Recife-PE, Rio Branco-AC e Vitória-ES -; e entre homens, em 6 capitais - Boa Vista-RR, Florianópolis-SC, Fortaleza-CE, Rio Branco-AC, Rio de Janeiro-RJ e São Paulo-SP. CONCLUSÃO: houve aumento da prevalência do diabetes em diversas capitais brasileiras; o monitoramento das tendências e fatores de risco é útil ao planejamento em saúde.

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.

Seroprevalence of toxoplasmosis in Fortaleza, Ceará, Brazil

Directory of Open Access Journals (Sweden)

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.

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.

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

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

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

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.

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.

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.

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 ...

La comunicación ante la convergencia digital: algunas fortalezas y debilidades

Directory of Open Access Journals (Sweden)

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.

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.

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

Directory of Open Access Journals (Sweden)

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.

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

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

Directory of Open Access Journals (Sweden)

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

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

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

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

Directory of Open Access Journals (Sweden)

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.

SEXUALIDADE NA VISÃO DA ADOLESCENTE GRÁVIDA: MITOS E TABUS

Directory of Open Access Journals (Sweden)

HILDA KARINNI PEIXOTO COSTA

2006-01-01

Full Text Available Estudio de tipo exploratorio y descriptivo desarrollado con 10 adolescentes embarazadas con edad entre 16 y 19 años, con atención prenatal en el Núcleo de Asistencia Médica Integrada (NAMI en Fortaleza-CE, en los períodos de agosto y de septiembre de 2004. Con el fin de identificar las dificultades enfrentadas por la adolescente en relación a la práctica sexual en este período; establecer una conexión entre el nivel socio-económico y las dificultades encontradas y la actuación de la enfermera en relación a las orientaciones acerca de la práctica sexual durante la consulta prenatal de la adolescente embarazada. Constatamos que la práctica sexual es realizada durante el embarazo, sólo que las dificultades emocionales y anatómicas hacen esta práctica menos placerosa, lo que dificulta la relación de la pareja. En relación a las orientaciones durante la consulta, percibimos que son insuficientes y que el asunto aún es motivo de vergüenza entre la embarazada y el profesional que la asiste, lo que lleva a que la embarazada sienta miedo y tenga dudas.

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%.

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.

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

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.

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

OpenAIRE

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 ...

Promoção da saúde em doenças transmissíveis: uma investigação entre adolescentes Promoción de la salud en enfermedades transmisibles: una investigación en adolescentes Health promotion in transmissible diseases: an investigation among teenagers

Directory of Open Access Journals (Sweden)

Eveline Pinheiro Beserra

2006-12-01

Full Text Available OBJETIVO: Relatar uma experiência de promoção da saúde no contexto das doenças transmissíveis com adolescentes. MÉTODOS: Utilizou-se a dialógica freireana: círculo de cultura, constituído por cinco oficinas de Promoção da Saúde com adolescentes da faixa etária de 13 a 16 anos numa escola de Fortaleza-CE. RESULTADOS: Foi identificado que os adolescentes tinham pouco conhecimento sobre os meios de prevenção das doenças transmitíveis (DT e de sobremodo das doenças sexualmente transmissíveis (DST. Ao final do círculo de cultura, os jovens referiram mudança de comportamento. CONCLUSÃO: A prática de educação em saúde orientada pelo círculo de cultura possibilitou apreender aspectos culturais relacionados às DT/DST e dinamizar o processo educativo repercutindo em mudanças de comportamento dos adolescentes sobre a prevenção dessas doenças.OBJETIVO: Relatar una experiencia de promoción de la salud con adolescentes, en el contexto de las enfermedades transmisibles. MÉTODOS: Se utilizó la dialógica freireana: círculo de cultura, constituido por cinco talleres de Promoción de la Salud realizado con adolescentes del grupo etáreo de trece a dieciséis años en una escuela de Fortaleza-CE. RESULTADOS: Fue identificado que los adolescentes tenían poco conocimiento sobre los medios de prevención de las infermidades transmisibles (DT, específicamente de las enfermedades sexualmente transmisibles. Al final del círculo de cultura, los jóvenes refirieron cambio de comportamiento. CONCLUSIÓN: La práctica de educación en salud orientada por el círculo de cultura hizo posible el aprendizaje de aspectos culturales relacionados a lasinfermidades transmisibles/ enfermidades sexualmente transmisibles y dinamizar el proceso educativo repercutiendo en cambios de comportamiento de los adolescentes sobre la prevención de esas enfermedades.OBJECTIVE: To describe an experience to promote health and prevent transmissible diseases

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.

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.

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

Administração de medicamentos para crianças nascidas expostas ao vírus da imunodeficiência humana Administration of medications for children born exposed to human immune deficiency virus

Directory of Open Access Journals (Sweden)

Julyana Gomes Freitas

2013-01-01

Full Text Available OBJETIVO: Avaliar a capacidade de mães com HIV/Aids de administrar a zidovudina e a profilaxia com sulfametoxazol-trimetoprima aos filhos nascidos expostos ao HIV. MÉTODOS: Estudo transversal e quantitativo, realizado em hospital de referência no atendimento a casos de HIV/Aids em Fortaleza (CE, Brasil. Utilizou-se a Escala de Avaliação da Capacidade para Cuidar de Crianças Expostas ao HIV, que foi respondida por 60 mães. RESULTADOS: O nível de capacidade de administrar a zidovudina variou de moderado a alto, sem diferenças significantes em relação às variáveis maternas (p>0,05. Em relação à administração do sulfametoxazol-trimetoprima, o nível de capacidade variou entre baixo, moderado e alto. A variável materna "paridade" apresentou relação com o nível de cuidado alto (p=0,051. CONCLUSÃO: O nível de capacidade das mães para administrar o AZT xarope (Fator I variou de moderado a alto e para administrar e SMZ-TMP (Fator IV, o nível de capacidade de administração distribuiu-se sem diferença entre baixo, moderado e alto.OBJECTIVE: To evaluate HIV-positive mothers' ability to administer zidovudine and trimethoprim-sulfamethoxazole (SMZ/TMP prophylaxis for HIV-exposed infants. METHODS: This cross-sectional and quantitative study was carried out at a reference hospital for HIV/AIDS patients in Fortaleza (CE, Brazil. A total of 60 mothers responded to the ability assessment scale for the care of HIV-exposed children. RESULTS: The level of ability to administer zidovudine varied from moderate to high. Maternal variables did not show significant differences (p>0.05. TMP/SMZ administration varied from low, moderate, and high. The variable "parity" was related to a high level of care (p=0.051. CONCLUSION: The level of ability of mothers to administer AZT syrup (factor I varied from moderate to high; with SMZ-TMP administration (factor IV, no difference among low, moderate, and high was seen.

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.

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

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

Directory of Open Access Journals (Sweden)

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

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...

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.

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

Directory of Open Access Journals (Sweden)

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.

A percepção de cegos e cegas diante das drogas La percepción de ciegos y ciegas frente a las drogas Blind men and women' perceptions of the use of illegal drugs

Directory of Open Access Journals (Sweden)

Lorita Marlena Freitag Pagliuca

2009-01-01

Full Text Available OBJETIVO: Compreender a percepção de mulheres e homens cegos sobre as drogas, comparando semelhanças e diferenças. MÉTODOS: Estudo descritivo, qualitativo, realizado em uma associação de cegos, em Fortaleza-CE, entre outubro de 2006 e março de 2007. A coleta de dados utilizou a entrevista com questão norteadora. A amostra foi limitada por saturação com cinco mulheres e sete homens. Adotou-se o método de Análise de Conteúdo, obtendo-se três temas. RESULTADOS: Os temas - O que sei - definem o que é droga e abrangência desta problemática; O que vivi - relatam repercussão das experiências pessoais e familiares com o uso das drogas; e O que penso sobre a prevenção - opinam sobre estratégias de prevenção. CONCLUSÕES: A problemática é entendida como agravante à saúde pública, afetando a sociedade e a vida do usuário. As influências de familiares, amigos e mídia aproximam às drogas ou não, reforçando a pertinência da promoção da saúde e prevenção entre os cegos.OBJETIVO: Comprender la percepción de mujeres y hombres ciegos sobre las drogas, comparando semejanzas y diferencias. MÉTODOS: Se trata de un estudio descriptivo, cualitativo, realizado en una asociación de ciegos, en Fortaleza-CE, entre octubre del 2006 y marzo del 2007. Para la recolección de datos se utilizó la entrevista con pregunta norteadora. La muestra conformada por cinco mujeres y siete hombres fue determinada por saturación. Se adoptó el método de Análisis de Contenido, obteniéndose tres temas. RESULTADOS: Los temas - ¿qué sé? - definen lo que es la droga y la magnitud de esta problemática; ¿qué viví? - relatan la repercusión de las experiencias personales y familiares con el uso de las drogas; y ¿qué pienso sobre la prevención? - reflejan las estrategias de prevención. CONCLUSIONES: La problemática es entendida como un agravante a la salud pública, afectando a la sociedad y la vida del usuario. Las influencias de

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.

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

ASSOCIAÇÃO DAS MALFORMAÇÕES CONGÊNITAS COM VARIÁVEIS NEONATAIS E MATERNAS EM UNIDADES NEONATAIS NUMA CIDADE DO NORDESTE BRASILEIRO

Directory of Open Access Journals (Sweden)

Fabíola Chaves Fontoura

2014-01-01

Full Text Available Malformaciones congénitas ocurrir debido a factores genéticos, ambientales, mistos o por causas desconocidas. Se objetivó investigar la relación entre tipo de malformación congénita, variables neonatales y maternas. Estudio prospectivo, cuantitativo, realizado en tres unidades neonatales públicas en Fortaleza-CE, Brasil. Los datos fueron recolectados del sistema de registro de 159 recién nacidos malformados y analizados por medio del test Chi cuadrado (χ 2 , nivel de significancia de 5% ( p <0,05. Prevalecieron 85 (53% recién nacidos del sexo masculino, 91 (57% a término y 82 (52% con peso entre 2500g y 3999g. Sobresalieron malformaciones del sistema nervoso central y óseo muscular. Variables como sexo, edad gestacional, peso al nascer, uso de drogas, edad materna, renta familiar, nivel de instrucción y cantidad de hijos demostraron significancia estadística, cuando asociadas a las categorías de malformaciones (p<0,05. Factores maternos y neonatales presentaron relación con el tipo de malformaciones, datos relevantes para el cuidado de enfermería junto al neonato.

CUIDADO DE ENFERMAGEM À CRIANÇA HOSPITALIZADA: UMA EXPERIÊNCIA NA PERCEPÇÃO DISCENTE-DOCENTE

Directory of Open Access Journals (Sweden)

EVELINE PINHEIRO BESERRA

2007-01-01

Full Text Available El objetivo de este estudio fue describir una experiencia relacionada al cuidado de enfermería que se le da al niño hospitalizado, buscando una reflexión desde el punto de vista alumna/o-docente. Dicho estudio ocurrió en una unidad pediátrica de un hospital público, en Fortaleza – CE, durante el mes de mayo de 2005. Como punto de partida, adoptamos el análisis de los registros del diario de campo de la alumna – autora principal de ese relato – y se hilaron reflexiones desde la perspectiva del docente, presentadas en formas temáticas. Acompañaron el proceso de enseñanza-aprendizaje: sentimientos motivadores y no motivadores, y el desarrollo de las relaciones interpersonales entre alumno-profesor- paciente, alumno-familia-equipo y alumno-alumno. Se constató una divergencia entre la teoría abordada en el aula y la realidad del campo de práctica. Se reflexionó sobre la preparación del alumno al ser inserido en el cuidado de enfermería del niño y de la función del profesor.

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.

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)

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.).

O recém-nascido sob fototerapia: a percepção da mãe El recién nacido bajo fototerapia: la percepción de la madre Newborn children under phototherapy: the mother's perception

Directory of Open Access Journals (Sweden)

Antonia do Carmo Soares Campos

2004-08-01

Full Text Available A fototerapia vem sendo utilizada desde 1958 para o tratamento inicial da icterícia que continua sendo importante causa de enfermidade no período neonatal. Este estudo, norteado por abordagem fenomenológica e qualitativa, objetivou investigar a percepção das mães acerca do tratamento fototerápico ao qual seus filhos são submetidos. Os sujeitos foram dez mães de recém-nascidos sob fototerapia na Unidade de Internação Neonatológica de uma maternidade pública em Fortaleza-CE. Os dados foram coletados entre maio e julho de 2002. Utilizamos como estratégia o Grupo de Encontro com influência de Carl Rogers. As falas categorizadas, segundo Bardin, revelaram temáticas que foram analisadas à luz dos pressupostos da Teoria Humanística de Enfermagem de Paterson e Zderad: conhecimento das mães acerca da fototerapia e inquietações das mães acerca da terapêutica. Concluímos que a maior preocupação das mães participantes deste estudo refere-se à visão do recém-nascido.La fototerapia se ha usado desde 1958 como un método para curar la ictericia que todavía es una enfermedad presente en los niños recién nacidos. La finalidad de este estudio de naturaleza fenomenológica y cualitativa es investigar la percepción de las madres acerca del tratamiento fototerápico a que sus hijos se someten. Los sujetos fueron diez madres de recién-nacidos bajo fototerapia en una Unidad de Internación Neonatológica de una maternidad pública en Fortaleza-CE, Brasil. Los datos fueron colectados entre Mayo y Julio de 2002. Utilizamos como estrategia reuniones de grupo con las madres como sugerido por Carl Rogers. Los datos fueron categorizados según Bardin y los temas analizados a lumbre de la teoría humanística de Enfermería de Paterson y Zderad: el conocimiento de madres acerca de la fototerapia y preocupaciones a cerca del tratamiento. Concluímos que la preocupación mayor de las madres que participaron de este estudio es con la visi

Pacientes vivendo com HIV/AIDS e coinfecção tuberculose: dificuldades associadas à adesão ou ao abandono do tratamento Pacientes que viven con el VIH/ SIDA y coinfectados con tuberculosis: las dificultades asociadas con la adhesión o abandono del tratamiento Patients living with HIV/AIDS and co-infection by tuberculosis: difficulties associated with treatment compliance or dropout

Directory of Open Access Journals (Sweden)

Manoel Pereira de Sousa Filho

2012-06-01

Full Text Available Pesquisa realizada em Fortaleza-CE, entre março e abril de 2011, com o objetivo de identificar as dificuldades que influenciam a adesão ou o abandono do tratamento de tuberculose em pacientes com Síndrome da Imunodeficiência Adquirida. Estudo qualitativo, com informações coletadas por meio de entrevista semiestruturada aplicada a pacientes com Síndrome da Imunodeficiência Adquirida e coinfecção tuberculose. Utilizamos o discurso do sujeito coletivo para a análise dos resultados. Os pacientes relataram dificuldades relacionadas aos aspectos socioeconômicos, ao estilo de vida e ao uso da medicação. O uso de álcool e o consumo de drogas ilícitas surgiram como fatores que levam a episódios de interrupção do processo terapêutico da doença. Concluímos que as barreiras relacionadas aos aspectos sociais, econômicos e ao estilo de vida são mais difíceis de serem enfrentadas para uma adesão continuada ao tratamento, tornando necessário o papel desempenhado pelos profissionais da saúde, apoiado por políticas públicas e sociais mais resolutivas.Investigación realizada en Fortaleza-CE, entre marzo y abril de 2011, con el objetivo de describir las dificultades que influyen en la adhesión o abandono del tratamiento de la tuberculosis en pacientes infectados con Virus de la Inmunodeficiencia Humana. Estudio cualitativo, con informaciones recopiladas a través de entrevista semiestructurada, aplicada en pacientes con Síndrome de Inmunodeficiencia Adquirida coinfectados con tuberculosis. Se utilizó el Discurso del Sujeto Colectivo para el análisis de los resultados. Los pacientes relataron dificultades cuanto a los aspectos socioeconómicos, estilo de vida y uso de medicamentos. El uso de alcohol y consumo de drogas fueron factores que llevaron a episodios de interrupción del proceso terapéutico de la enfermedad. Concluimos que obstáculos relacionados a los aspectos sociales, económicos y estilo de vida son más dif

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

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)

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

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.)

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.

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

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.

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....

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

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.

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.

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.

Desfecho neonatal em gestações que evoluíram com amniorrexe prematura

Directory of Open Access Journals (Sweden)

Marcela Lima Silveira

2014-01-01

Full Text Available El objetivo fue describir los resultados neonatales de recién nacidos, cuyas madres tenían amniorrexe prematuro durante embarazo. Estudio descriptivo, retrospectivo y cuantitativo, en maternidad pública de Fortaleza-CE, Brasil, con 166 neonatos de madres con amniorrexe prematuro, en 2010. Los datos fueron recolectados mediante la búsqueda en registros médicos, uso de formulario pre estructurado. Predominaron recién nacidos a término, con peso adecuado y buena vitalidad al nacer. El análisis estadístico señaló asociación significativa entre prematuridad y latencia prolongada y las variables neonatales: necesidad de asistencia respiratoria, infección neonatal y uso de antibióticos. La edad gestacional presenta relevancia fundamental para llevar a cabo la gestión clínica y la evaluación de resultados perinatales, pues los principales problemas de salud relacionados con la amniorrexe prematuro son resultantes de la prematuridad.

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

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

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

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.

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

Competition entre supraconductivite et magnetisme au voisinage de la transition de Mott dans le conducteur organique quasi-bidimensionnel k-(BEDT-TTF)2copper[N(CN)2]bromine

Science.gov (United States)

Fournier, David

Les conducteurs organiques quasi-bidimensionnels kappa-ET2X presentent d'importantes similitudes avec les SCHT telles qu'une phase isolant de Mott, un regime de pseudogap et un etat supraconducteur. L'etude de leurs proprietes apparait donc complementaire. Parmi les interrogations persistantes concernant la physique de ces systemes, l'origine du (ou des) processus exotique d'appariement, responsable de la supraconductivite est le sujet suscitant l'interet le plus marque dans la communaute. L'hypothese d'un mecanisme lie a la proximite d'un etat antiferromagnetique est privilegiee. Une etape importante dans la resolution de cette problematique est l'identification de la symetrie du parametre d'ordre. D'apres de nombreux travaux sur les systemes fortement correles, la sonde ultrasonore, de par sa sensibilite aux excitations de quasiparticule a basse temperature, est consideree comme particulierement adaptee a l'etude de cette propriete. Cependant, son emploi necessite l'utilisation d'un compose metallique a basse temperature et completement supraconducteur. Le compose metallique organique kappa-ET 2Cu[N(CN)2]Br presente toutes les caracteristiques necessaires a l'etude de cette propriete. En effet, il est situe loin de la transition du premier ordre de Mott et est completement supraconducteur. De facon surprenante, ce systeme semble se coupler fortement avec le reseau ce qui augmente significativement la sensibilite de cette sonde aux proprietes du gaz electronique. Cependant, des difficultes techniques importantes, liees a la nature intrinseque de ce materiau, doivent etre surmontees pour proceder a des mesures suivant differentes polarisations. La presente etude a profondement modifie notre comprehension de ce systeme. En effet, ces mesures ont permis de constater que le kappa-ET2Cu[N(CN)2]Br est un compose qui est situe en bordure de la zone de coexistence entre la supraconductivite et le magnetisme, ce qui constitue un resultat totalement inattendu. De plus, la

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)

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.)

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.

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.

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.

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 ...

Atuação do enfermeiro no cuidado com o cateter central de inserção periférica no recém-nascido Actuación del enfermero en el cuidado con el cateter central de inserción periferica en el recién nacido Action of the nurse with peripherally inserted central catheter in the infant newborn

Directory of Open Access Journals (Sweden)

Zaira Simas Rodrigues

2006-10-01

Full Text Available Os avanços tecnológicos em Neonatologia vêm beneficiando os recém-nascidos que necessitam de um acesso venoso seguro. Objetivou-se investigar a atuação do enfermeiro no cuidado com o Cateter Central de Inserção Periférica (PICC na Unidade de Terapia Intensiva Neonatal em Fortaleza, CE. A amostra foi composta por 17 enfermeiros e os dados foram coletados de julho a agosto/2004 através de questionário estruturado. Nos resultados verificou-se que 09 citaram a veia basílica como a mais indicada para a punção; 17 mencionaram a lavagem das mãos antes e após o manuseio e a lavagem do cateter antes e após as medicações como os cuidados mais importantes. Conclui-se que o manuseio deste dispositivo requer conhecimento e habilidade por parte dos profissionais.Los avances tecnológicos en la Neonatología han beneficiando los recién nacidos de alto riesgo, que necesitan de un acceso venoso seguro. Este trabajo tuvo por objetivo investigar la actuación del enfermero en el cuidado con el Cateter Central de Inserción Periférica (PICC en la Unidad de Terapia Intensiva Neonatal en Fortaleza, CE. Los datos fueron recolectados de julio a agosto de 2004 a través de un cuestionario. En los resultados se verificó que 09 citaron la vena basílica como de más indicada para la punción; 17 mencionaron de entre los cuidados, el lavado de las manos antes y después de lo manoseo y el lavado del cateter antes y después de las medicaciones como los más importantes. Se concluye que lo manoseo de este dispositivo requiere conocimiento y habilidad por parte de los profesionales.Technological advances in Neonatology have benefited the infant newborn who need a safe venous access. This study aimed at investigating the actions of the nurse regarding Peripherally Inserted Central Catheter (PICC in the Neonatal Intensive Care Unit in Fortaleza, CE. The sample was composed by 17 nurses; the data were collected from July to August 2004 through a structured

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.

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.

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)

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.

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.

Challenges in mental health care in the Family Health Strategy - doi:10.5020/18061230.2011.p102

Directory of Open Access Journals (Sweden)

Cinthia Mendonça Cavalcante

2012-01-01

Full Text Available Objective: To discuss the practice of mental health care performed by healthcare professionals from the Family Health Strategy in Fortaleza-CE, Brazil. Methods: This is a critical and reflective study conducted in six Basic Health Units in Fortaleza-Ce. The study subjects were 12 health workers of the following professions: doctor, nurse, community health agents and technical and/or nursing assistant. Semi-structured interviews, systematic observation and questionnaire were used for data collection. The empirical analysis was based on an understanding of the discourses through critical hermeneutics. Results: It was evident that the mental health services are developed by some health workers in the ESF, such as, matrix support, relational technologies, home visits and community group therapy. However, there is still deficiency in training/coaching by most professionals in primary care, due to an enduring model of pathological or curative health care. Conclusion: Mental health care is still occasionally held by some workers in primary care. However, some progresses are already present as matrix support, relational technologies in health care, home visits and community therapy

Challenges in mental health care in the Family Health Strategy

Directory of Open Access Journals (Sweden)

Consuelo Helena Aires de Freitas

2011-06-01

Full Text Available Objective: To discuss the practice of mental health care performed by healthcare professionals from the Family Health Strategy in Fortaleza-CE, Brazil. Methods: This is a critical and reflective study conducted in six Basic Health Units in Fortaleza-Ce. The study subjects were 12 health workers of the following professions: doctor, nurse, community health agents and technical and/or nursing assistant. Semi-structured interviews, systematic observationand questionnaire were used for data collection. The empirical analysis was based on an understanding of the discourses through critical hermeneutics. Results: It was evident that the mental health services are developed by some health workers in the ESF, such as, matrix support, relational technologies, home visits and community group therapy. However, there is still deficiency in training/coaching by most professionals in primary care, due to anenduring model of pathological or curative health care. Conclusion: Mental health care is still occasionally held by some workers in primary care. However, some progresses are already present as matrix support, relational technologies in health care, home visits andcommunity therapy.

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.

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.

Análise de transmissão de preços do mercado atacadista de melão do Brasil

Directory of Open Access Journals (Sweden)

Rodrigo de Oliveira Mayorga

2007-09-01

Full Text Available O presente estudo se propôs a analisar a relação existente entre os mercados atacadistas de melão amarelo no Brasil. Para analisar a transmissão de preços entre estes mercados, utilizaram-se métodos de séries de tempo, teste de raiz unitária, teste de co-integração de Johansen, o modelo Auto-regressivo Vetorial (VAR, decomposição da variância dos erros de previsão e função resposta ao impulso. O período analisado abrangeu janeiro de 2001 a dezembro de 2005. Os resultados mostraram que, apesar dos pólos Açu/Mossoró-RN e Baixo Jaguaribe-CE representarem as maiores áreas produtoras nacionais de melão, variações nos preços de atacado de melão amarelo das Centrais de Abastecimento de Natal e Fortaleza, não afetam de maneira significativa os preços dos outros mercados estudados. No entanto, variações nos preços da Companhia de Entrepostos e Armazéns Gerais de São Paulo (CEAGESP têm impacto sobre todos os mercados atacadistas analisados. Assim sendo, a CEAGESP, representando os atacadistas nacionais, e sendo a maior intermediadora do país, comanda o mercado brasileiro de melão amarelo comercializado, constituindo, na prática, um mercado oligopolístico.The present study has the purpose to analyze the relationship among wholesale market of yellow melon in Brazil. Time series methods, unit root test, Johansen cointegration test, Vectorial Autoregressive models (VAR, variance decomposition of prediction error and impulse response function were used to analyze the price transmission among these markets. The analyzed period embraces January 2001 to December 2005. The results showed that, despite Açu/Mossoró-RN and Baixo Jaguaribe-CE represents the national biggest melon production areas, wholesale prices deviations from the Supply Centers of Natal and Fortaleza, didn’t affect in a significant way the other markets studied. On the other hand, price variation of the CEAGESP (Companhia de Entrepostos e Armazéns Gerais

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.

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.)

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

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.

Facilidades e dificuldades das enfermeiras gerentes na implementação da gerência do cuidado no ambiente hospitalar Facilities managers and difficulties of nurses in the implementation of environmental management of care hospital

Directory of Open Access Journals (Sweden)

Marcelo Costa Fernandes

2016-10-01

Full Text Available Objetivo: Analisar as facilidades e dificuldades das enfermeiras gerentes na implementação da gerência do cuidado no ambiente hospitalar. Métodos: Trata-se de um estudo descritivo, com abordagem qualitativa realizado no período de outubro a novembro de 2012, em um hospital público de nível terciário da cidade de Fortaleza-CE. A coleta de dados foi feita através de entrevista semiestruturada, a técnica utilizada para a interpretação dos dados foi à análise de conteúdo. Resultados: Foram encontrados como fatores facilitadores no desenvolvimento da gerência do cuidado o apoio da líder do setor de enfermagem do hospital e a relação dialética entre os membros da equipe. Como fatores impeditivos observaram-se a estrutura física do hospital e a falta de pessoal.  Conclusão: O estudo busca sensibilizar a discussão sobre a gerência do cuidado, pois a articulação entre as atividades gerenciais e de cuidado, é importante para inovação e renovação do processo de trabalho do enfermeiro.

ESTÁGIO ELETIVO NA FORMAÇÃO DO ACADÊMICO DE ENFERMAGEM: ALGUMAS REFLEXÕES

Directory of Open Access Journals (Sweden)

CIBELE ALMEIDA TORRES

2008-01-01

Full Text Available Con este artículo se pretende reflexionar sobre la experiencia del académico de enfermería en la práctica electiva, en un hospital público de Fortaleza/CE. Se trata de un estudio descriptivo y exploratorio, desarrollado entre febrero y marzo de 2007, utilizando la observación participante y el diario de campo. Se hizo una relación entre la experiencia del estudiante y la literatura pertinente, estructurada en dos partes: consideraciones acerca del ambiente hospitalario y de la inserción del estudiante en el mismo. Se reflexionó sobre la asistencia de Enfermería, del proceso de salud-enfermedad, humanización, promoción de la salud, relación interdisciplinar e integralidad. Se entrelazaron puntos positivos a fin de mejorar habilidades teóricas y prácticas y puntos que precisan mejorar, relacionados al déficit de conocimiento y a la dificultad de efectuar una práctica interdisciplinar humanizada. Se nota, por lo tanto, que es imprescindible que la propia universidad se apropie de las críticas constructivas, conduciendo al alumno a un crecimiento educativo, a partir de la óptica de los académicos, profesores y profesionales del servicio.

Determinantes sociais da saúde e qualidade de vida de cuidadores de crianças com câncer

Directory of Open Access Journals (Sweden)

Rebeca Silveira Rocha

Full Text Available RESUMO Objetivo Associar os determinantes sociais de saúde e a qualidade de vida de cuidadores de crianças com câncer. Métodos Estudo transversal, realizado em centro pediátrico do câncer, em Fortaleza/CE, com 176 participantes, durante novembro e dezembro/2013. Utilizou-se questionário contendo determinantes sociais de saúde e World Health Quality of Life-Bref para a avaliação da qualidade de vida. Foram correlacionados os determinantes com as médias dos domínios da qualidade de vida, utilizando a análise de variância (ANOVA. Resultados Houve significância estatística na associação entre o domínio das relações sociais e a escolaridade (p=0,01792 e entre o domínio psicossocial e o sexo do cuidador (p=0,01901. Os cuidadores do sexo masculino, nível educacional alto, mais jovens, casados, do lar e procedentes do interior possuem melhor qualidade de vida. Conclusão O estudo permitiu a compreensão da influência dos determinantes sociais de saúde na qualidade de vida de cuidadores de crianças com câncer.

Uso de medicamentos, glicemia capilar e índice de massa corpórea em pacientes com diabetes mellitus

Directory of Open Access Journals (Sweden)

Márcio Flávio Moura de Araújo

2013-10-01

Full Text Available Objetivou-se relacionar o uso de medicamentos com a glicemia capilar e o índice de massa corpórea em pacientes com diabetes mellitus tipo 2. Estudo transversal realizado entre janeiro e julho de 2009, nos domicílios de 437 pacientes de doze centros de saúde de Fortaleza-CE. Utilizou-se um formulário para o registro das variáveis sociodemográficas e clinicas, glicemia capilar, índice de massa corpórea e uso de medicamentos. Dos pacientes com glicemia capilar normal, 93% não utilizavam antidepressivos / ansiolíticos (p = 0,02. Aproximadamente 99% dos que apresentavam a glicemia capilar elevada não utilizavam cálcio diariamente (p = 0,04. Entre aqueles com índice de massa corpórea normal, 45,5% tomavam diariamente anti-hipertensivos da classe inibidor da ECA (p = 0,03. O uso diário de drogas inibidoras da ECA, antidepressivos / ansiolíticos e cálcio apresentou associação com a glicemia capilar e o índice de massa corpórea, respectivamente. É importante que o enfermeiro avalie o peso corporal e a glicemia capilar dos pacientes com diabetes, em particular daqueles que fazem uso contínuo de medicamentos.

Tradução e validação da escala Partner Communication Scale – versão brasileira com adolescentes do sexo feminino

Directory of Open Access Journals (Sweden)

Fabiane do Amaral Gubert

2013-08-01

Full Text Available O objetivo do estudo é descrever o processo de adaptação e validação da escala Partner Communication Scale -PCS com adolescentes do sexo feminino em Fortaleza, CE. Pesquisa metodológica, de abordagem quantitativa, realizada com 313 adolescentes, entre 14 a 18 anos, que já haviam tido o primeiro intercurso sexual. O processo de adaptação transcultural seguiu as etapas: tradução, retrotradução, avaliação das traduções por um comitê de juízes e teste da versão pré-final. A escala foi aplicada com um questionário sociodemográfico e de variáveis sexuais e reprodutivas, via computador, em novembro/2010 a janeiro/2011. A confiabilidade foi verificada por meio do teste alfa de Cronbach (0.86 e demonstrou que pode ser aplicada no cenário da atenção primária à saúde, durante as consultas de enfermagem ao adolescente, e que permite identificar fatores que dificultam/facilitam a comunicação, principalmente em relação às DST/HIV. A escala mostrou-se adequada para verificar a comunicação entre os parceiros sexuais na adolescência.

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.

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

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.

Percepções de enfermeiras sobre a assistência prestada a mulheres diante do óbito fetal Percepciones de enfermeros acerca de la atención a la mujeres delante de la muerte del feto Nurses' perception on the assistance provided to women facing fetal death

Directory of Open Access Journals (Sweden)

Camila da Silva Santos

2012-06-01

Full Text Available Objetivou-se analisar as percepções de enfermeiras quanto à assistência de enfermagem prestada a mulheres diante do diagnóstico de óbito fetal. Pesquisa com abordagem qualitativa, realizada em uma maternidade-escola de Fortaleza-CE, Brasil, entre setembro e outubro/2009. A amostra constou de nove enfermeiras que atuavam no serviço de gestação de alto risco. Os resultados evidenciaram que o foco da assistência prestada era a oferta de apoio psicológico, através da permissão fornecida às mulheres ou familiares para verem o feto morto. As dificuldades mais citadas estiveram associadas à questão estrutural da maternidade, que não possuía uma enfermaria específica para as mães com diagnóstico de óbito fetal. Ademais, citaram a sobrecarga de trabalho, uma vez que exerciam funções que não integravam os procedimentos de práxis. Destaca-se, portanto, a necessidade de uma assistência diferenciada às mulheres ante o óbito fetal, que abranja, além dos recursos humanos, questões estruturais dos serviços de saúde.El objetivo del estudio fue analizar las percepciones de enfermeras sobre la atención en enfermería a la mujer con diagnóstico de muerte fetal. Investigación cualitativa, realizada en una maternidad escuela de Fortaleza-CE, Brasil, entre septiembre y octubre de 2009. La muestra consistió de nueve enfermeras del servicio de embarazo de alto riesgo. Los resultados mostraron que el enfoque de la asistencia fue la prestación de apoyo psicológico, a través de la autorización fornecida a las mujeres o familiares para miraren el feto muerto. Las dificultades más frecuentes estuvieron asociadas a la estructura de la maternidad, que no tiene sala específica para las madres con diagnóstico de muerte fetal. Citaron, también, la sobrecarga de trabajo, pues actuaban en procedimientos además de la praxis. Se apunta, así, la necesidad de una atención diferenciada a la mujer con muerte del feto que señale, además de

Evaluation of the risk for pressure ulcers in bedridden elderly at home Evaluación del riesgo de úlceras por presión en cama ancianos en el hogar Avaliação de risco para úlcera por pressão em idosos acamados no domicílio

Directory of Open Access Journals (Sweden)

Geridice Lorna de Andrade Moraes

2012-01-01

Full Text Available OBJECTIVE: To evaluate the risk for pressure ulcers in elderly in their homes, after a period of hospitalization. METHODS: A longitudinal prospective study conducted in the homes of 40 elderly identified with risk for pressure ulcer (PU at hospital discharge, using the Braden Scale. The monitoring was conducted over four home visits, in the period between June and August of 2010, in Fortaleza (CE and its metropolitan region. RESULTS: The majority of the elderly were female (65% with a medical diagnosis of cerebral vascular accident (55%. In the first and second visits, 55% and 40% of the elderly, respectively, presented high risk for PU, and the incidence of PU was 22.5%. The association of the risk scores presented significant association in the first three visits. CONCLUSION: The risk for PU development was higher in the first two weeks, after hospital discharge, but diminished for the remainder of the visits.OBJETIVO: Evaluar el riesgo a úlcera por presión en ancianos en el domicilio, después del período de internamiento hospitalario. MÉTODOS: Estudio longitudinal prospectivo realizado en domicilio de 40 ancianos identificados en el alta hospitalaria, con riesgo a úlcera por presión (UP, mediante aplicación de la escala de Braden. El acompañamiento fue realizado en cuatro visitas domiciliarias, en el período entre junio y agosto de 2010, en Fortaleza (CE y región metropolitana. RESULTADOS: La mayoría de los ancianos era del sexo femenino (65% y con diagnóstico médico de accidente cerebro vascular (55%. En la primera y segunda visitas, 55% y 40% de los ancianos, respectivamente, presentaron riesgo elevado para UP y la incidencia de lesión fue del 22,5%. La asociación de los scores de riesgo presentó asociación significativa en las tres primeras visitas. CONCLUSIÓN: El riesgo para el desarrollo de UP fue más elevado en las dos primeras semanas, después del alta hospitalaria, pero fue disminuyendo en el transcurrir de las

Percepções maternas sobre o neonato em uso de fototerapia Percepciones maternales sobre el recién nacido en uso de fototerapia Maternal perceptions about the newborn in use of phototherapy

Directory of Open Access Journals (Sweden)

Francisca Leonilda Sampaio Rodrigues

2007-03-01

Full Text Available A fototerapia é o tratamento inicial da icterícia neonatal. Objetivamos conhecer a percepção da mãe acerca da fototerapia e identificar as suas dificuldades, relacionadas ao tratamento fototerápico. Estudo descritivo com abordagem qualitativa, realizado no Alojamento Conjunto (AC de um hospital público em Fortaleza-CE, com 8 puérperas na faixa etária entre 13 e 25 anos. Os dados foram coletados em maio e junho/2006, mediante entrevista com duas questões de pesquisa: O que representa para a senhora ver o seu filho sob fototerapia; quais são as dificuldades enfrentadas em relação aos cuidados com o seu bebê na fototerapia? Na análise das falas, identificamos as categorias: percepção da mãe com relação ao cuidado com o bebê sob a fototerapia, dificuldades enfrentadas pela mãe com seu filho em fototerapia, e a mãe após as orientações recebidas. Concluímos que existe a necessidade de repensar as orientações e assumir autenticamente os cuidados de enfermagem ao binômio mãe-filho.La fototerapia es un tratamiento inicial de la ictericia neonatal. El Objetivo fue conocer la percepción de la madre sobre la fototerapia e identificar las dificultades de la madre con relación a este tratamiento. Estudio descriptivo con abordaje cualitativa. Realizado en el Alojamiento Conjunto (AC de un hospital público en Fortaleza-CE, con 08 parturientas con edad entre 13 a 25 años. Los datos fueron colectados en mayo y junio/2006, a través de entrevista con dos cuestiones de investigacíon: ¿Qué representa para la señora observar su niño en fototerapia?¿Cualés las dificultades enfrentadas con relación a la atención con su niño en la fototerapia? En la análisis de las hablas, observamos las categorias: percepción de la madre con relación a la atención con el niño en fototerapia, dificultades sufridas por la madre, con su hijo en fototerapia, y la madre después de las orientaciones recebidas. Concluimos que hay la necesidad

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.

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

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.

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

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.

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

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)

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

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.)

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

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)

(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

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

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.

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.

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

Directory of Open Access Journals (Sweden)

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.

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...

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

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...

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.

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...

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 ...

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.

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.

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

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

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.

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.

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

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.

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)

Variabilidade entre árvores matrizes de Ceiba speciosa St. Hil para características de frutos e sementes

Directory of Open Access Journals (Sweden)

Antonio Roveri Neto

Full Text Available RESUMO A paineira-rosa (Ceiba speciosa St. Hil. - Malvaceae é uma espécie arbórea com grande importância na recuperação de ecossistemas degradados e cuja madeira e paina são usadas em diversas atividades econômicas. O presente estudo avaliou a variabilidade e a repetibilidade para caracteres biométricos de frutos e sementes e qualidade de sementes entre árvores matrizes de C. speciosa. Foram coletados frutos de 36 árvores matrizes, determinando-se em cinco frutos o diâmetro, comprimento, massa fresca e seca e número de sementes e em 100 sementes, o comprimento, diâmetro e peso de 100 sementes. A qualidade fisiológica das sementes foi avaliada pela germinação e testes de vigor: índice de velocidade de germinação, envelhecimento acelerado (EA, condutividade elétrica (CE e submersão das sementes em água, em quatro repetições de 25 sementes, exceto para CE e submersão, em que as repetições continham 40 sementes. Após os testes de EA e submersão, as sementes foram submetidas ao teste de germinação. As médias de árvores matrizes foram comparadas pelo teste de Scott-Knott e estimou-se o coeficiente de determinação genotípico, repetibilidade e correlação entre caracteres. As características avaliadas apresentam variabilidade significativa entre as árvores matrizes e estão sob baixa influência ambiental. As correlações entre caracteres biométricos com o processo germinativo e qualidade de sementes são baixas. Os coeficientes de repetibilidade são altos e a avaliação de cinco frutos e 100 sementes por árvore matriz e o uso de quatro repetições nos testes de germinação e vigor possibilitam boa confiabilidade na determinação da variabilidade da espécie.

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.))

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

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. 

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...

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.

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

A cidade no fluxo do tempo: invenção do passado e patrimônio The city in the flow of time: invention of past and heritage

Directory of Open Access Journals (Sweden)

Irlys Alencar F. Barreira

2003-01-01

Full Text Available O artigo, baseado em pesquisa que toma Fortaleza como referência, tem por objetivo pensar as diferentes conexões estabelecidas entre a cidade e seu passado. Considera que os discursos sobre a urbe estão circunstanciados a diferentes contextos e porta-vozes. Destaca, nesse sentido, a cidade pensada por romancistas, historiadores, políticos e profissionais do planejamento urbano. As transformações recentes da cidade ensejam discursos voltados para uma comunicação entre passado e presente, que apresentam tanto lamentações sobre a desfiguração do espaço urbano como a busca de recompor a "história" da cidade, através de uma política de preservação daquilo que é considerado como patrimônio. Atualmente o incentivo cada vez maior ao turismo em Fortaleza vem criando um novo discurso de exportação de imagens a serem propagadas e absorvidas para consumo. A recuperação do centro da cidade, dos antigos prédios e áreas de lazer responde a este fluxo de transformação e preservação que caracteriza não apenas Fortaleza, podendo, também, expressar um movimento que ocorre em diferentes cidades brasileiras.The article, based on a research carried out in the Brazilian city of Fortaleza, is aimed at reflecting over the distinct connections established between the city and its past. The discourses about the urbe are circumstanced to different contexts and speakers. Therefore, it focuses on the city as thought of by novelists, historians, politicians and urban planning professionals. The recent changes that the city has undergone entail discourses towards communication between past and present, presenting both complaints about disfiguration of urban space and the search for recomposing the city's "history", though a policy of preserving what is considered as heritage. Nowadays, the increasing encouragement to tourism in Fortaleza has been creating a new discourse on exporting images to be spread and absorbed for consumption. The

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.

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.

Relação entre solos afetados por sais e concentração de metais pesados em quatro perímetros irrigados no Ceará

Directory of Open Access Journals (Sweden)

Cleyton S. M. Cunha

Full Text Available RESUMO O trabalho teve como objetivo verificar a relação entre atributos químicos relacionados com a salinidade (CTC, pH, PST e CE e concentrações de metais pesados (Fe, Al, Si, Ti, Mn, Zn, Cr, V, Ni, Cu, Co, B, Pb, Se, Cd, Mo, Zr e suas inter-relações em solos afetados por sais relativo a quatro perímetros irrigados no Ceará. Foram coletadas amostras de solo, de diferentes texturas, nas profundidades de 0–10 e 10-20 cm em 10 pontos dentro de cada perímetro, totalizando oitenta (80 amostras. Foram utilizadas a análise de correlação canônica (ACC e a análise fatorial com extração dos fatores em componentes principais (AF para verificar as possíveis relações entre os dois conjuntos de variáveis. Os atributos do solo relacionadas com a salinidade contribuíram para explicar as concentrações de metais pesados nos solos dos quatro perímetros irrigados, quando analisados em conjunto; todavia, não foram capazes de explicar quando analisados de forma individual; seguindo a ordem de importância: CTC > pH > PST > CE. Foram verificadas correlações entre os elementos metálicos analisados neste estudo (B, Mo, Si, Zr, Cr, Ni, Pb, Ti, Zn, Cd, Co, Se e Cu com o Fe, Mn, Al, Ti e V, ou, ainda, afinidades geoquímicas entre os elementos.

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.

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.

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.

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

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).

Single-crystal FCC and DHCP phases in Ce/Pr superlattices

International Nuclear Information System (INIS)

Lee, S.; Goff, J.P.; Ward, R.C.C.; Wells, M.R.; McIntyre, G.J.

2002-01-01

Cerium usually comprises a mixture of polycrystalline FCC and DHCP allotropes. Single-crystal Ce has been stabilised in Ce/Pr superlattices grown using molecular beam epitaxy. It is found that FCC or DHCP phases can be obtained depending on superlattice composition and growth conditions. Low-temperature neutron scattering was performed on Ce/Pr samples using the triple-axis spectrometer D10 at the ILL. Such measurements revealed one sample, [Ce 20 Pr 20 ] 60 , to be a single crystal with a DHCP unit cell; while another, [Ce 30 Pr 10 ] 56 , was a mixture of FCC and DHCP phases. Antiferromagnetic ordering of magnetic moments was observed in the DHCP sample (T N =11.1 K) with a magnetic structure similar to that found in bulk β-Ce. Surprisingly, the magnetic ordering was found to be confined to single Ce blocks. Furthermore, it was found that, at low temperatures, the lattice contraction observed for bulk FCC Ce was suppressed in Ce/Pr superlattices. (orig.)

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 ...

Assistência de enfermagem a idosos que realizam cateterismo cardíaco: uma proposta a partir do modelo de adaptação de Calista Roy Asistencia de enfermería a ancianos que realizan cateterismo cardíaco: una propuesta a partir del modelo de adaptación de Calista Roy Nursing care to elderly patients undergoing heart catheterization: a proposal according to the Adaptation model of Calista Roy

Directory of Open Access Journals (Sweden)

Maria Célia de Freitas

2006-10-01

Full Text Available O estudo objetivou identificar os diagnósticos de enfermagem de idosos que realizam cateterismo cardíaco, abordando os aspectos psicossociais, segundo a Teoria de Adaptação de Roy. Desenvolveu-se em hospital de pronto-atendimento em cardiologia de Fortaleza-CE, de janeiro a julho de 2005. Utilizou-se entrevista semi-estruturada, com 18 idosos de ambos os sexos, no pré-cateterismo. Na análise reconheceram-se os diagnósticos: alteração na manutenção da saúde, ansiedade, medo e alteração no processo familiar. Como intervenções propõe-se: criar um clima de confiança, antes do exame; escutar e respeitar sentimentos, crenças e valores, orientar quanto ao procedimento. A utilização desta teoria permitiu reconhecer que as pessoas, mediante estímulos, podem desencadear respostas positivas ou negativas, cabendo ao enfermeiro atuar como mediador.El estúdio objetivó identificar los diagnósticos de enfermería abordando los aspectos psico-sociales de los pacientes que realizan cateterismo cardiaco, según la Teoría de Adaptación de Roy. Se desarrolló en la sección de cardiología de un hospital de Fortaleza-CE, de Janeiro a Julio de 2005. Se utilizó la entrevista semi-estructurada, con 18 ancianos, en el pre-cateterismo. En el análisis reconocieron los diagnósticos: alteración en la manutención de la salud, ansiedad, miedo y alteración en el proceso familiar. Entre las acciones se elaboraron las siguientes: crearse un clima de confianza para el paciente después del examen; escuchar y respetar sentimientos, creencias y valores referentes a la situación; orientar el paciente cuanto al procedimiento. La utilización de esta teoría permitió reconocer que las personas, mediante estímulos, pueden desencadenar respuestas ora positivas ora negativas, cabiendo al enfermero actuar como mediador.The study aimed at identifying the nursing diagnoses related to the psychological and social aspects of elderly patients undergoing

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

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.

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

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.

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

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...

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'.

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.

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

Vivendo infarto: os significados da doença segundo a perspectiva do paciente Viviendo el infarto: los significados de la enfermedad según la perspectiva del paciente Having an infarction: the meanings of the disease from the patient's perspective

Directory of Open Access Journals (Sweden)

Francisca Lígia de Medeiros Martins dos Santos

2003-12-01

Full Text Available O presente estudo buscou identificar o significado do Infarto Agudo do Miocárdio para os pacientes, a partir do relato de suas vivências. Dada a natureza do problema, este estudo, de caráter descritivo, utilizou como referencial metodológico o Interacionismo Simbólico. Os dados foram obtidos através de entrevista semi-estruturada, tendo como atores treze pacientes, com diagnóstico de infarto agudo do miocárdio, internados num centro coronariano de um hospital público especializado de Fortaleza-CE. A análise dos dados possibilitou identificar que "Viver o Infarto Agudo do Miocárdio Segundo a Perspectiva do Paciente" foi predominantemente inexplicado, gerador de sentimentos negativos e repentinos.El presente estudio buscó identificar el significado del Infarto Agudo del Miocardio para los pacientes, a partir del relato de sus vivencias. Dada la naturaleza del problema, este estudio de carácter descriptivo utilizó como referencial metodológico el Interaccionismo Simbólico. Los datos fueron obtenidos a través de entrevista semiestructurada, teniendo como actores trece pacientes, con diagnóstico de infarto agudo de miocardio, internados en un centro coronario de un hospital público especializado de Fortaleza-CE. El análisis de los datos permitió identificar que" Vivir el Infarto Agudo del Miocardio Según la Perspectiva del Paciente" fue predominantemente inexplicable, generador de sentimientos negativos y repentinos.This study aimed to identify the meaning of Acute Myocardial Infarction for patients, on the basis of their experiences reports. Given the nature of the problem, this descriptive study used Symbolic Interactionism as a methodological reference framework. Data where obtained through semi-structured interviews with thirteen patients, diagnosed as Acute Myocardial Infarction, admitted at a coronary center of a specialized public hospital in Fortaleza-CE, Brazil. Data analysis enabled us to identify that "Having an Acute

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

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.

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.

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.

Metallic oxides supported in CeO{sub 2} and CeO{sub 2}-La{sub 2} O{sub 3} for low temperature shift reaction; Oxidos metalicos suportados em CeO{sub 2} e CeO{sub 2}-La{sub 2} O{sub 3} para reacao shift a baixa temperatura

Energy Technology Data Exchange (ETDEWEB)

Maluf, Silvia Salua; Assaf, Elisabete Moreira [Universidade de Sao Paulo (USP), Sao Carlos, SP (Brazil). Inst. de Quimica]. E-mail: sil_maluf@iqsc.usp.br

2008-07-01

This work studied copper and zinc oxides supported in CeO{sub 2} and CeO{sub 2}/La{sub 2}O{sub 3}. The catalytic tests for low temperature shift reaction, carried out for samples, showed the Cu-Ce catalyst presents the highest value of CO conversion (50%) and after the Cu-Ce-La catalysts (30%). The other catalysts showed CO conversion in range of 15%. This behavior is related with surface area, and also with the amount of Cu in the surface of samples (author)

[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.

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.)

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.

Deleuze, Bergson, Bachelard et Bazin,les ambigüités entre phénoménologie et sémiotique pour une théorie du temps filmique

Directory of Open Access Journals (Sweden)

Lenice Pereira Barbosa

2013-12-01

Full Text Available Ce texte est né de la nécessité de structurer théoriquement ce qui, selon une approche empirique, est une évidence : aborder les considérations d’André Bazin et de Gilles Deleuze concernant le temps cinématographique à travers un point de vue phénoménologique. Ceci pourrait, bien évidemment, entrainer un « chassé-croisé » théorique entre Sémiotique et Phénoménologie qui se neutraliseraient les unes les autres sans apporter de changements par rapport à la perception chromatique du temps. L’objectif principal de ce travail est d’élargir le sens attribué à l’élément couleur au cinéma et de mettre en exergue le rapport entre les manifestations chromatiques et la perception du temps. À partir de ces points, il est également possible de considérer le principe multi – disciplinaire que ces éléments nous imposent, inspiré par l’évidence de la continuité-discontinuité qui, en tout cas au cinéma, n’est pas nécessairement un dilemme. Ainsi, il s’agit de faire coexister dans une approche phénoménologique certaines conceptions de Bergson et de Bachelard concernant la perception du temps.

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.

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...

TECNOLOGIA, AMBIENTE E INTERAÇÕES NA PROMOÇÃO DA SAÚDE AO RECÉM- NASCIDO E SUA FAMÍLIA

Directory of Open Access Journals (Sweden)

Márcia Maria Coelho Oliveira

2009-01-01

Full Text Available Estudio de caso, de naturaleza cualitativa, con el objetivo de analizar los cuidados ambientales y las interacciones entre el equipo de enfermería, el recién nacido (RN prematuro hospitalizado y su familia como una estrategia para la promoción de la salud en unidad de vigilancia intensiva neonatal (UVIN, en Fortaleza-Ce. En junio del 2008, se utilizó para la recogida de datos, la obser- vación de los cuidados de Enfermería al RN, y también los registros del historial médico del recién nacido. Para el análisis, fueron creadas tres categorías que surgieron de las articulaciones establecidas entre los fundamentos de las interacciones: profesional/ bebé, profesional/familiares y profesional/binomio madre/bebé. Se puede concluir que en este entorno, se exige que el profesional esté en consonancia con el bebé, con la madre y el equipo del hospital. A su vez, la evolución tecnológica afecta el ambiente y la capacidad del ′′saber hacer” del profesional, tornando posible la realización de prácticas de promoción de la salud en las unidades críticas, mediante una atención de calidad, humana y personalizada a los recién nacidos y su familiares.

DANO OCUPACIONAL NA UNIDADE DE TERAPIA INTENSIVA NEONATAL: A PERCEPÇÃO DA ENFERMEIRA

Directory of Open Access Journals (Sweden)

MARIA ALVANI DIAS PEDROZA

2006-01-01

Full Text Available Se trata de estudio cuantitativo, exploratorio y descriptivo, con el objetivo de conocer la percepción de las enfermeras con respecto a la influencia del desempeño en la asistencia de enfermería y en el ambiente laboral. Tuvo por escenario la Unidad de Terapia Intensiva Neonatal (UTIN de una maternidad escuela, en Fortaleza-CE. Recogimos los datos entre agosto y septiembre de 2004 a través de un cuestionario estructurado en parte, aplicado a 24 enfermeras activas. Verificamos que la mayor concentración de enfermeras (un 37,5% pertenece al grupo de las que ya tienen entre uno a cinco años de trabajo y que 19 (un 79% de ellas poseen otro trabajo, sometidas a una altísima carga horaria. El exceso de trabajo, el estrés y el ruido son los factores que más incomodan en el local, desencadenando el exceso de actividades y cansancio físico. Concluimos que el estrés existente en esta unidad es lo que causa mayor daño a la práctica laboral. El hecho de que esto ocurra con mucha frecuencia nos plantea una reflexión sobre las consecuencias que aporta a la salud del profesional /cuidador, mostrándonos la necesidad de mejorar las condiciones de trabajo.

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.

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.

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

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.

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.

Isabelle Dépret : Église orthodoxe et histoire en Grèce contemporaine, versions officielles et controverses historiographiques

Directory of Open Access Journals (Sweden)

Joëlle Dalègre

2012-05-01

Full Text Available Cet ouvrage, complet, extrêmement riche en indications bibliographiques, traitant une question encore pratiquement tabou en Grèce, s'attache aux rapports réciproques entre Église orthodoxe et État grec depuis 1832, à la façon dont l'histoire grecque officielle a modelé sa présentation du rôle de l'église orthodoxe, aux controverses qui naissent des efforts récents d'historiens pour « revoir » l'histoire officielle de leur pays. Les questions principales sont posées dans l'introduction : la co...

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

Directory of Open Access Journals (Sweden)

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

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

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

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

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

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...

O envolvimento do enfermeiro no processo de morrer de bebês internados em Unidade Neonatal El involucramiento del enfermero en el proceso de morir de niños hospitalizados en una unidad de neonatología Nurses experiences with death in the neonatal intensive care unit

Directory of Open Access Journals (Sweden)

Isabella Rocha Aguiar

2006-06-01

Full Text Available OBJETIVO: compreender a participação do enfermeiro no processo de morrer de bebês internados em unidade de terapia intensiva neonatal. MÉTODOS: Pesquisa Qualitativa em que participaram 10 enfermeiras de uma unidade de terapia intensiva neonatológica de um hospital-escola da cidade de Fortaleza-CE, durante os meses de maio e junho de 2003. RESULTADOS: os resultados foram analisados conforme as categorias: Sentimentos que emergem na convivência com a morte; Convivendo com a família no processo de morrer; A influência da formação acadêmica para a convivência com o paciente terminal. Os sentimentos citados foram de perda, tristeza, angústia, impotência, frieza. Os profissionais se vêem envolvidos com a família que vivencia o luto. A maioria das enfermeiras não teve embasamento acerca de Tanatologia no Curso de Graduação. CONCLUSÃO: os profissionais que lidam com a morte em sua prática convivem com a busca do equilíbrio entre o cuidar do outro e de si mesmo.OBJETIVO: comprender la participación del enfermero en el proceso de morir de bebés internados en una unidad de cuidados intensivos neonatal. MÉTODOS: Pesquisa Qualitativa en que participaron en el estudio 10 enfermeras de la unidad de cuidados intensivos neonatal de un hospital-docente de la ciudad de Fortaleza-CE, durante los meses de mayo a junio del 2003. RESULTADOS: los datos fueron analizados resultando las siguientes categorías: Sentimientos que emergen en la convivencia con la muerte; Conviviendo con la familia en el proceso de morir; La influencia de la formación académica para la convivencia con el paciente terminal. Los sentimientos citados fueron de pérdida, tristeza, angustia, impotencia, frialdad. Los profesionales se ven involucrados con la familia que vivencia el duelo. La mayoría de las enfermeras no tuvo base respecto a Tanatología en el Pregrado. CONCLUSIÓN: los profesionales que se enfrentan con la muerte, en su práctica, conviven con la b

Luminescence and scintillation properties of LuPO4-Ce nanoparticles

International Nuclear Information System (INIS)

Vistovskyy, V.; Malyy, T.; Pushak, A.; Vas’kiv, A.; Shapoval, A.; Mitina, N.; Gektin, A.; Zaichenko, A.; Voloshinovskii, A.

2014-01-01

Study of the spectral-luminescence parameters of LuPO 4 -Ce nanoparticles upon the excitation by X-ray quanta and synchrotron radiation with photon energies of 4–25 eV was performed. Nanoparticles with mean size about a=35 nm and nanoparticles with size less than 12 nm reveal the different structures of cerium centers. Luminescence efficiency of LuPO 4 -Ce nanoparticles of a 4 -Ce nanoparticles studied using synchrotron and X-ray excitation. • Different structure of Ce 3+ -centers has been revealed for LuPO 4 -Ce nanoparticles. • Luminescence of LuPO 4 -Ce with size less than 12 nm is strongly quenched upon the X-ray excitation

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

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.

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.

Room temperature ferromagnetism in Fe-doped CeO2 nanoparticles.

Science.gov (United States)

Maensiri, Santi; Phokha, Sumalin; Laokul, Paveena; Seraphin, Supapan

2009-11-01

RT ferromagnetism was observed in nanoparticles of Fe-doped CeO2 (i.e., Ce(0.97)Fe(0.03)O2) synthesized by a sol-gel method. The undoped and Fe-doped CeO2 were characterized by XRD, Raman spectroscopy, TEM, and VSM. The undoped samples and Ce(0.97)Fe(0.03)O2 precursor exhibit a diamagnetic behavior. The 673 K-calcined Ce(0.97)Fe(0.03)O2 sample is paramagnetic whereas 773 and 873 K-calcined Ce(0.97)Fe(0.03)O2 samples are ferromagnetism having the magnetizations of 4.65 x 10(-3) emu/g and 6.20 x 10(-3) emu/g at 10 kOe, respectively. Our results indicate that the ferromagnetic property is intrinsic to the Fe-doped CeO2 system and is not a result of any secondary magnetic phase or cluster formation.

Synthesis and luminescence of CePO4 and CePO4:Tb hollow and core-shell microspheres composed of single-crystal nanorods

International Nuclear Information System (INIS)

Guan Mingyun; Sun Jianhua; Han Min; Xu Zheng; Tao Feifei; Yin Gui; Wei Xianwen; Zhu Jianmin; Jiang Xiqun

2007-01-01

Lanthanide phosphate microspheres composed of single-crystal CePO 4 and CePO 4 :Tb nanorods were successfully synthesized, respectively, using the functionalized composite aggregate as a template, which is composed of P123, H 6 P 4 O 13 and Ce 3+ , and also as a resource of reaction species with high chemical potential. The shape and the phase structure of the CePO 4 nanocrystal can be easily controlled via adjusting reaction temperature, monomer concentration and annealing temperature. SEM images show the spherical superstructure composed of nanorods. HRTEM and SAED images reveal the single-crystalline nature of nanorod and TEM images show the hollow interiors of the superstructure. XRD patterns indicate that the crystal structure of the nanorods is hexagonal before and monoclinic after annealing. The formation mechanism was proposed. Strong UV and green luminescence were observed for the CePO 4 and CePO 4 :Tb microspheres, respectively. The synthesis method can be extended to the fabrication of NRHS and core-shell microspheres of other rare-earth or doped LnPO 4 materials for wide applications

Electrochemical characterization of Pt-CeO{sub 2}/C and Pt-Ce{sub x}Zr{sub 1-x}O{sub 2}/C catalysts for ethanol electro-oxidation

Energy Technology Data Exchange (ETDEWEB)

Bai, Yuxia; Qiu, Xinping; Xi, Jingyu; Wang, Jianshe; Li, Jinfeng; Zhu, Wentao; Chen, Liquan [Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084 (China); Wu, Jianjun [Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084 (China); Department of Chemistry, Shijiazhuang College, Shijiazhuang 050801 (China)

2007-04-24

Pt-CeO{sub 2}/C and a series of Pt-Ce{sub x}Zr{sub 1-x}O{sub 2}/C catalyst powders with different Ce/Zr ratio were prepared and evaluated in terms of the electrochemical activity for ethanol electro-oxidation using cyclic voltammetry (CV), steady state polarization experiments and CO-stripping technique at room temperature. XRD results show that Ce{sub x}Zr{sub 1-x}O{sub 2} and Pt coexist in the Pt-Ce{sub x}Zr{sub 1-x}O{sub 2}/C catalyst and Ce{sub x}Zr{sub 1-x}O{sub 2} has no effect on the crystalline lattice of Pt. TEM results show that the Pt and Ce{sub x}Zr{sub 1-x}O{sub 2} particles dispersed uniformly over the surface of the carbon black. Cyclic voltammetry results show that the mass activity and specific activity of Pt-CeO{sub 2}/C for ethanol electro-oxidation is higher than that of Pt/C. The structure and Ce/Zr ratio of Pt-Ce{sub x}Zr{sub 1-x}O{sub 2}/C has effect on the catalytic activity of catalysts. CO-stripping voltammetry showed that the inclusion of CeO{sub 2} and Ce{sub x}Zr{sub 1-x}O{sub 2} favors the CO oxidation at lower potential. (author)

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)

Satellite line mapping in Eu3+–Ce3+ and Pr3+–Ce3+ codoped Y2SiO5

International Nuclear Information System (INIS)

Serrano, D.; Karlsson, J.; Zheng, L.; Dong, Y.; Ferrier, A.; Goldner, P.; Walther, A.; Rippe, L.; Kröll, S.

2016-01-01

In this work we perform a high-resolution spectroscopic investigation of Eu 3+ –Ce 3+ and Pr 3+ –Ce 3+ codoped Y 2 SiO 5 crystals. Satellite line spectra were recorded at low temperatures around the Eu 3+ : 7 F 0 → 5 D 0 and the Pr 3+ : 3 H 4 → 1 D 2 transitions. It is observed that the incorporation of Ce 3+ as a codopant notably changes the Eu 3+ and Pr 3+ satellite line patterns. Satellite lines measured in singly doped Eu 3+ :Y 2 SiO 5 were found at the same spectral positions in Eu 3+ –Ce 3+ codoped crystals. These coincident lines were concluded to be due to pairs of Eu 3+ ions. Extra satellite lines appeared in the codoped crystals, which were assigned to Ce 3+ related structures such as Ce 3+ –Eu 3+ pairs. The analysis of the Pr 3+ satellite line spectra presents further challenges. Satellite lines associated to Pr 3+ pairs show weaker intensity, presumably due to the efficient quenching of the Pr 3+1 D 2 emission through cross-relaxation paths ( 1 D 2 → 1 G 4 ; 3 H 4 → 3 F 4 ). The investigation of the Eu 3+ and Pr 3+ satellite line patterns in Y 2 SiO 5 is particularly interesting for their exploitation in rare-earth based quantum computation schemes. - Highlights: • We recorded Eu and Pr satellite lines in Y 2 SiO 5 with and without Ce as a codopant. • The presence of Ce leads to the appearance of extra satellite lines in the spectra. • The satellite lines are associated to minor crystal sites such as ion pairs. • Less than 100 ion pairs were detected per satellite line. • The exploitation of the satellite line structure is proposed for quantum computing.

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

Synchronicité le rapport entre physique et psyché de Pauli et Jung à Chopra

CERN Document Server

Teodorani, Massimo

2015-01-01

De mystérieux événements synchrones semblent parsemer nos vies. Tandis qu'une pensée affleure, un fait, qui renferme toujours un sens profond dont le but est de conduire nos vies vers leur destin, se produit à l'improviste, dans un synchronisme parfait. L'objectif de ce livre est de démontrer que le phénomène de la « synchronicité » est depuis longtemps étudié, en particulier par les physiciens quantiques. Ces recherches plongent leurs racines dans l'alliance durable et harmonieuse entre le grand psychologue analytique Carl Gustav Jung et le physicien quantique Wolfgang Pauli.

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.

Sonocatalytic degradation of diclofenac with FeCeOx particles in water.

Science.gov (United States)

Chong, Shan; Zhang, Guangming; Wei, Zhongheng; Zhang, Nan; Huang, Ting; Liu, Yucan

2017-01-01

This paper studies the sonocatalytic degradation of diclofenac in water using FeCeO x -catalyzed ultrasound. The effects of pre-adsorption and gas addition were investigated. Nitrogen adsorption/desorption, SEM, XRD, Raman and XPS analyses of FeCeO x before and after sonication were characterized. The proposed mechanism was based on the microstructure changes of FeCeO x and reactive-species-scavenging performances. The results show that FeCeO x has excellent performance in catalyzing an ultrasonic system in water, and 80% of diclofenac was removed in 30min ([Diclofenac]=20mg/L, FeCeO x amount=0.5g/L, pH=6, ultrasonic density=3.0W/cm 3 , ultrasonic frequency=20kHz, temperature=298K). The Fe, Ce, and O elements remained highly dispersed in the structure of FeCeO x , and the solid solution structure of FeCeO x remained stable after the reaction. Ce (III) was gradually oxidized to Ce (IV) and Fe (III) was gradually reduced to Fe (II) after the reaction, which indicates that Fe and Ce ions with different valences coexisted in dynamic equilibrium. The amount of oxygen vacancies in FeCeO x significantly decreased after the reaction, which indicates that oxygen vacancy participated in the ultrasonic process. Singlet oxygen 1 O 2 was the primary reactive species in the degradation process, and the hydroxyl radicals OH and superoxide radical anion O 2 - also participated in the reaction. FeCeO x had excellent chemical stability with negligible leaching ions in the ultrasonic process. Copyright © 2016 Elsevier B.V. All rights reserved.

Core-level XPS studies of Ce and La intermetallic compounds and their implications for the 4f levels of Ce compounds

International Nuclear Information System (INIS)

Freiburg, C.; Fuggle, J.C.; Hillebrecht, F.U.; Zolnierek, Z.; Laesser, R.

1983-01-01

The 3d core hole X-ray photoelectron spectra (XPS) of approximately 30 intermetallic compounds of La and Ce are reported. Transitions to final states with approximately f 0 , f 1 and f 2 character are observed in some Ce compounds (f 0 and f 1 for La compounds). The results are discussed in terms of the current ideas of the influence of f-counts and f-levels hybridization on core level lineshapes. We cannot find an explanatoin of the observed spectra consisted with the ''promotial model'' where the 4f-count varies and 4f electron was thought to be entirely promoted to the Ce 5d6s valence bands in some compounds. There may be some small charge transfer from the f level, however. In conjunction with ideas on screening processes in XPS the observed lineshapes suggest coupling of the 4f electrons to other states is strongest in those compounds previously thought to have f 0 character. This coupling increases despite a large increase in the Ce-Ce distance when Ce is diluted with Ni or Pd. Thus it cannot be due to direct f-f interaction and must be attributed to coupling with the other valence electrons; possibly those centred on the partner sites. (orig./EZ) [de

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.)

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.

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

Directory of Open Access Journals (Sweden)

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.

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.

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.

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%.

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

Preparation and characterization of Ce-doped HfO2 nanoparticles

International Nuclear Information System (INIS)

Gálvez-Barboza, S.; González, L.A.; Puente-Urbina, B.A.; Saucedo-Salazar, E.M.; García-Cerda, L.A.

2015-01-01

Highlights: • Ce-doped HfO 2 nanoparticles were prepared by a modified solgel method. • Ce-doped HfO 2 nanoparticles have a semispherical shape with sizes between 6 and 11.5 nm. • The samples doped with 10% in weight of Ce directly crystallized in a cubic structure. • A quick, straightforward and effective route for the preparation of Ce-doped nanoparticles. - Abstract: A modified solgel method to synthesize Ce-doped HfO 2 nanoparticles was carried out using a precursor material prepared with cerium nitrate, hafnium chloride, citric acid and ethylene glycol. The obtained precursor material was calcined at 500 and 700 °C for 2 h in air. The influence of the concentration of Ce and the calcination temperature was studied to observe the structural and morphological changes of the obtained materials. For the characterization, X-ray diffraction (XRD), transmission electron microscopy (TEM) and Raman scattering (RS) were employed. The XRD patterns shown that the Ce-doped HfO 2 undergoes a structural transformation from monoclinic to cubic phase, which is significantly dependent on the Ce content and calcination temperature. TEM images have also confirmed the existence of semispherical nanoparticles with sizes between 6 and 11.5 nm

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...

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

Sistema electoral costarricense, seis décadas de probada efectividad

Directory of Open Access Journals (Sweden)

Zetty Bou Valverde

2010-07-01

Full Text Available Las fortalezas del sistema electoral costarricense no descansan, exclusivamente, en las previsiones normativas o en la fortaleza del organismo electoral sino, también, en el sistema de partidos políticos y la participación de los ciudadanos, pilares esenciales y que no deben ser descuidados si se quiere seguir viviendo en democracia. El nuevo Código Electoral, que entró en vigencia el 2 de setiembre de 2009, incorpora al derecho electoral costarricense importantes principios, mecanismos jurisdiccionales e instituciones que ya habían sido desarrollados por la jurisprudencia del TSE, así como otros novedosos, que vienen a dar más efectividad y seguridad al proceso democrático

[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.

Experimental investigation and thermodynamic calculation of the Zn–Fe–Ce system

Energy Technology Data Exchange (ETDEWEB)

Lu, Longfei; Wu, Changjun [Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Jiangsu 213164 (China); Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Jiangsu 213164 (China); Wang, Jianhua, E-mail: wangjh@cczu.edu.cn [Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Jiangsu 213164 (China); Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Jiangsu 213164 (China); Liu, Ya; Tu, Hao; Su, Xuping [Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University, Jiangsu 213164 (China); Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University, Jiangsu 213164 (China)

2015-11-05

The 450 °C and 600 °C isothermal sections of the Zn–Fe–Ce system were investigated using equilibrated alloys and diffusion couples. The samples were analyzed by Scanning Electron Microscopy equipped with Energy Dispersive X-ray Spectrometer analysis and X-ray power diffraction. 15 and 13 three-phase regions were identified to exist at 450 °C and 600 °C, respectively. No ternary compound was found. Ce can not dissolve into all the Zn–Fe binary compounds and the solubilities of Fe in all the Zn–Ce binary phases were limited. All the Zn–Fe compounds can equilibrate with CeZn{sub 11} and all the Ce–Zn compounds (except CeZn) can equilibrate with α-Fe. Furthermore, thermodynamic extrapolation of the Zn–Fe–Ce system was carried out and showed good agreement well with detected phase relationships. - Highlights: • 450 °C and 600 °C sections of the Zn–Fe–Ce system were constructed. • No ternary compound exists. • Ce can not dissolve into all the Zn–Fe compounds. • All the Fe–Zn compounds can equilibrate with CeZn{sub 11}. • Thermodynamic extrapolation results agree with experimental data.

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.

Adsorption process of fluoride from drinking water with magnetic core-shell Ce-Ti@Fe3O4 and Ce-Ti oxide nanoparticles.

Science.gov (United States)

Abo Markeb, Ahmad; Alonso, Amanda; Sánchez, Antoni; Font, Xavier

2017-11-15

Synthesized magnetic core-shell Ce-Ti@Fe 3 O 4 nanoparticles were tested, as an adsorbent, for fluoride removal and the adsorption studies were optimized. Adsorption capacity was compared with the synthesized Ce-Ti oxide nanoparticles. The adsorption equilibrium for the Ce-Ti@Fe 3 O 4 adsorbent was found to occur in cycles of adsorption-desorption. Although the nanoparticles suffer slight structure modifications after their reusability, they keep their adsorption capacity. Likewise, the efficiency of the Ce-Ti@Fe 3 O 4 was demonstrated when applied to real water to obtain a residual concentration of F - below the maximum contaminated level, 1.5mg/L (WHO, 2006). Copyright © 2017 Elsevier B.V. All rights reserved.

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...

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

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.

Characterizations of electrodeposited Ni–CeO{sub 2} nanocomposite coatings

Energy Technology Data Exchange (ETDEWEB)

Kasturibai, S., E-mail: s.kasturibai@yahoo.co.in [Department of Chemistry, Alagappa Government Arts College, Karaikudi 630 003, Tamilnadu (India); Advanced Nanocomposite Coatings Laboratory, Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi 630 003, Tamilnadu (India); Kalaignan, G. Paruthimal, E-mail: pkalaignan@yahoo.com [Advanced Nanocomposite Coatings Laboratory, Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi 630 003, Tamilnadu (India)

2014-10-15

The expansion of current machinery requires metallic materials with better surface properties. In the present investigation, CeO{sub 2} reinforced nickel nanocomposite coatings were deposited on mild steel substrate by direct current electrodeposition process employing nickel acetate bath. The effect of incorporation of CeO{sub 2} particles in the Ni nanocomposite coatings on the micro hardness and corrosion behaviour has been evaluated. Smooth and compact nanocomposite deposits containing well-distributed cerium oxide particles were obtained. The crystallite structure was fcc for electrodeposited nickel and Ni–CeO{sub 2} nanocomposite coatings. It has been observed that, the presence of CeO{sub 2} nanoparticles favours the [111] and [200] texture of nickel matrix. The co-deposition of CeO{sub 2} nanoparticles with nickel was found to be favoured at applied current density of 8 A dm{sup −2}. The micro hardness values of the nickel nanocomposite coatings (725 HV) was higher than that of pure nickel (265 HV).The decrease in I{sub corr} values and increase in Constant Phase Element values were investigated in 3.5% NaCl solution which showed the higher corrosion resistant nature of Ni–CeO{sub 2} coatings. - Highlights: • Ni–CeO{sub 2} composite coatings have electrodeposited from eco-friendly acetate bath. • Inclusion of CeO{sub 2} in the composite coating has refined the crystallite size. • Micro hardness values have increased with CeO{sub 2} content in the composite coatings. • The negative shift of E{sub corr} confirming cathodic protective nature of coatings.

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,...).

Scintillation and optical stimulated luminescence of Ce-doped CaF2

International Nuclear Information System (INIS)

Yanagida, Takayuki; Fujimoto, Yutaka; Watanabe, Kenichi; Fukuda, Kentaro; Kawaguchi, Noriaki; Miyamoto, Yuka; Nanto, Hidehito

2014-01-01

Scintillation and optical stimulated luminescence of Ce 0.1–20% doped CaF 2 crystals prepared by Tokuyama Corp. were investigated. In X-ray induced scintillation spectra, luminescence due to Ce 3+ 5d–4f transition appeared around 320 nm with typically 40 ns decay time. By 241 Am 5.5 MeV α-ray irradiation, 0.1% doped one showed the highest scintillation light yield and the light yield monotonically decreased with Ce concentrations. Optically stimulated luminescence after X-ray irradiation was observed around 320 nm under 550 or 830 nm stimulation in all samples. As a result, intensities of optically stimulated luminescence were proportional to Ce concentrations. Consequently, scintillation and optically stimulated luminescence resulted to have a complementary relation in Ce-doped CaF 2 system. - Highlights: • Optical, scintillation, and OSL properties of Ce 0.1–20% doped CaF 2 were studied. • Scintillation light yield exhibited inverse proportionality to Ce concentrations. • OSL intensities showed proportionality to Ce concentrations. • Complementary relation of scintillation and OSL was experimentally confirmed

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

Neck circumference as a potential marker of metabolic syndrome among college students

OpenAIRE

Pereira, Dayse Christina Rodrigues; Araújo, Márcio Flávio Moura de; Freitas, Roberto Wagner Júnior Freire de; Teixeira, Carla Regina de Souza; Zanetti, Maria Lúcia; Damasceno, Marta Maria Coelho

2014-01-01

OBJECTIVE: to relate neck circumference with metabolic syndrome and its criteria among college students.METHOD: cross-sectional study conducted with 702 college students in Fortaleza, CE, Brazil from September 2010 to June 2011. Socio-demographic data, waist circumference and neck circumference were collected together with blood pressure, fasting blood sugar, triglyceride levels, and HDL-C.RESULTS: 1.7% of the studied sample presented metabolic syndrome. Of these, 58.3% presented altered neck...

Care in thermorregulation of the preterm infant: the nurse’s view

OpenAIRE

Karla Maria Carneiro Rolim; Ana Flávia Pessoa Correia Araújo; Naylê Maria Moreira Campos; Simone Miranda Barbosa Lopes; Eloah de Paula Pessoa Gurgel; Antônia do Carmo Soares Campos

2012-01-01

This is an exploratory descriptive study with qualitative approach which was carried out in the Neonatal Intensive Care Unit (NICU) of the Teaching Maternity Assis Chateaubriand in Fortaleza-CE from November 2008 to February 2009, with the objective of knowing the nurse’s perception regarding the nursing care in the thermoregulation of preterm infants in NICU. A semi-structured interview was carried out, containing identification data and subjects concerning the nursing assistance to preterm ...

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

Contributing opportunistic resources to the grid with HTCondor-CE-Bosco

Science.gov (United States)

Weitzel, Derek; Bockelman, Brian

2017-10-01

The HTCondor-CE [1] is the primary Compute Element (CE) software for the Open Science Grid. While it offers many advantages for large sites, for smaller, WLCG Tier-3 sites or opportunistic clusters, it can be a difficult task to install, configure, and maintain the HTCondor-CE. Installing a CE typically involves understanding several pieces of software, installing hundreds of packages on a dedicated node, updating several configuration files, and implementing grid authentication mechanisms. On the other hand, accessing remote clusters from personal computers has been dramatically improved with Bosco: site admins only need to setup SSH public key authentication and appropriate accounts on a login host. In this paper, we take a new approach with the HTCondor-CE-Bosco, a CE which combines the flexibility and reliability of the HTCondor-CE with the easy-to-install Bosco. The administrators of the opportunistic resource are not required to install any software: only SSH access and a user account are required from the host site. The OSG can then run the grid-specific portions from a central location. This provides a new, more centralized, model for running grid services, which complements the traditional distributed model. We will show the architecture of a HTCondor-CE-Bosco enabled site, as well as feedback from multiple sites that have deployed it.

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)

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)

VUV-UV–vis photoluminescence of Ce{sup 3+} and Ce{sup 3+}-Eu{sup 2+} energy transfer in Ba{sub 2}MgSi{sub 2}O{sub 7}

Energy Technology Data Exchange (ETDEWEB)

Yan, Jing; Liu, Chunmeng; Zhou, Weijie [MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275 (China); Huang, Yan; Tao, Ye [Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039 (China); Liang, Hongbin, E-mail: cesbin@mail.sysu.edu.cn [MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275 (China)

2017-05-15

A series of Ce{sup 3+} doped and Ce{sup 3+}-Eu{sup 2+} co-doped Ba{sub 2}MgSi{sub 2}O{sub 7} phosphors was prepared via a high-temperature solid-state reaction technique. The photoluminescence properties, which include synchrotron radiation VUV-UV excitation spectra, emission spectra and concentration effect, thermal stability of Ce{sup 3+} are investigated. Hence the energies of the crystal field split 5d excited states of Ce{sup 3+} are determined. Due to spectral overlap, the energy transfer from sensitizer Ce{sup 3+} to activator Eu{sup 2+} in Ba{sub 2}MgSi{sub 2}O{sub 7}:Ce{sup 3+}, Eu{sup 2+} occurs, and the mechanism is demonstrated to be an electric dipole−dipole interaction. - Highlights: •The energies of five crystal field split 5d states of Ce{sup 3+} in Ba{sub 2}MgSi{sub 2}O{sub 7} were determined by synchrotron radiation VUV-UV excitation spectrum. •The concentration effect, thermal stability of Ce{sup 3+} were investigated. •The energy transfer from Ce{sup 3+} to Eu{sup 2+} and its influence on luminescence decays of Ce{sup 3+} and Eu{sup 2+} were studied.

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

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

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.

Luminescence of Ce3+ doped LaPO4 nanophosphors upon Ce3+ 4f-5d and band-to-band excitation

International Nuclear Information System (INIS)

Stryganyuk, G.; Trots, D.M.; Voloshinovskii, A.; Shalapska, T.; Zakordonskiy, V.; Vistovskyy, V.; Pidzyrailo, M.; Zimmerer, G.

2008-01-01

Luminescence spectral-kinetic studies have been performed for pure and Ce-doped LaPO 4 micro- and nanosized phosphates using synchrotron radiation for the excitation within 5-20 eV energy range at T=8-300 K. Mechanisms for the excitation of Ce 3+ 5d-4f emission as well as the quenching processes are discussed. The influence of surface defects has been considered to modify considerably the luminescent properties of nanosized phosphors upon the excitation in the energy range of Ce 3+ 4f-5d transitions and LaPO 4 host absorption

DEFINITION, MESURE ET PILOTAGE DE LA PERFORMANCE CLIENT-FOURNISSEUR : DES FREINS AU « PARTENARIAT INTERNE » ENTRE ACHETEURS ET OPERATIONNELS ?

OpenAIRE

Sebti , Hicham

2015-01-01

International audience; Le présent article s’intéresse à la manière dont s’organisent les liens entre les acheteurs et les clients internes autour de la définition, des leviers et des dispositifs de pilotage de la performance client-fournisseur. Nous interrogeons la diversité des représentations de la performance, des activités pour la réaliser et des usages des dispositifs de gestion qui servent de fondement aux interprétations de ce qui est performant et orientent les comportements. Nous so...

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

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

Comunicação terapêutica em Enfermagem: instrumento essencial do cuidado Comunicación terapéutica en Enfermería: herramienta esencial de la atención Therapeutic communication in Nursing: essential instrument of care

Directory of Open Access Journals (Sweden)

Alexandra Carvalho Pontes

2008-06-01

Full Text Available O objetivo deste estudo foi analisar o processo de comunicação terapêutica desenvolvida por enfermeiros numa unidade de internação com base na teoria de Peplau. Pesquisa descritiva-exploratória realizada em um Hospital Público de Fortaleza, CE, em outubro e novembro de 2006. Participaram 14 pacientes e 12 enfermeiros, através de uma entrevista semi-estruturada. Os dados foram organizados em temáticas, discutidas com base na literatura. Os resultados revelam que, desde a admissão até a alta do paciente, há comunicação e interação, sendo desenvolvido um relacionamento interpessoal. Muitas vezes, contudo, essa comunicação não é como deveria ser, pois a enfermeira pouco prioriza em seu tempo de trabalho as visitas junto aos pacientes. Estes têm dificuldade de distinguir as enfermeiras dos outros membros da equipe, dificultando a fase de aproximação e o desenvolvimento de uma comunicação terapêutica.El objetivo de esto estudio fue analizar el proceso de comunicación terapéutica desarrollada por enfermeros en una unidad de internación basada en la teoría de Peplau. Es una Investigación descriptiva-exploratoria realizada en un Hospital Público de Fortaleza-CE, de octubre y noviembre de 2006. Participaron 14 pacientes y 12 enfermeros, siendo realizada una entrevista semi-estructura. Los datos fueron organizados en temas, basada en la literatura. Los resultados señalaron que desde la admisión hasta la alta de paciente, hay comunicación e interacción, siendo desarrollada así una relación interpersonal. En la mayoría de las veces, por supuesto, esa comunicación no es como debería haber. Se constató que la enfermera no hace prioridad en su tiempo de trabajo a las visitas junto a los pacientes. Estos pocos diferencian a las enfermeras de los otros componentes del equipo de enfermería, lo que dificulta la fase de aproximación entre ellos y el desarrollo de una comunicación terapéutica.The objective of the study

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.

Luminescence from Ce in sol-gel SiO{sub 2}

Energy Technology Data Exchange (ETDEWEB)

Kroon, R.E., E-mail: KroonRE@ufs.ac.za [Department of Physics, University of the Free State, IB51, Box 339, Bloemfontein 9300 (South Africa); Seed Ahmed, H.A.A.; Ntwaeaborwa, O.M. [Department of Physics, University of the Free State, IB51, Box 339, Bloemfontein 9300 (South Africa); Koao, L.F. [Department of Physics, University of the Free State (Qwaqwa Campus), Private Bag X13, Phuthaditjhaba 9866 (South Africa); Nagpure, I.M.; Gusowski, M.A. [Department of Physics, University of the Free State, IB51, Box 339, Bloemfontein 9300 (South Africa); Botha, J.R. [Department of Physics, Nelson Mandela Metropolitan University, Box 77000, Port Elizabeth 6031 (South Africa); Swart, H.C. [Department of Physics, University of the Free State, IB51, Box 339, Bloemfontein 9300 (South Africa)

2012-05-15

The sol-gel process provides an attractive low temperature alternative to the melt process for producing Ce-doped silica, but reports of the emission wavelength have not been consistent. In this paper, luminescence measurements using a variety of excitation methods, including cathodoluminescence not yet reported by other researchers, are compared and evaluated in the light of previously published data. Several papers report luminescence around 350 nm but emission near this wavelength was not found from our samples. This luminescence originates from Ce that has not yet been incorporated in the silica and is found in samples that have not undergone high temperature annealing. Our photoluminescence results from samples annealed in a reducing atmosphere suggest that emission from Ce incorporated in the silica lattice occurs near 455 nm, and some indication of the emission from Ce in amorphous clusters at 400 nm is also found. However, our results also confirm earlier indications that intrinsic defects in silica can create photoluminescence near both these wavelengths, which can make identification of the luminescence due to Ce difficult. Finally, it has been found that samples which have been annealed in air, and therefore display poor photoluminescence because most of the Ce occurs in the tetravalent form, are luminescent under electron beam excitation. It is suggested that during cathodoluminescence measurements Ce{sup 4+} ions capture electrons to form excited Ce{sup 3+} ions from which the luminescence originates.

Complex impedance study on nano-CeO2 coating TiO2

International Nuclear Information System (INIS)

Zhang Mei; Wang Honglian; Wang Xidong; Li Wenchao

2006-01-01

Titanium dioxide (TiO 2 ) nanoparticles and cerium dioxide (CeO 2 ) nanoparticles coated titanium dioxide (TiO 2 ) nanoparticles (CeO 2 -TiO 2 nanoparticles) have been successfully synthesized by sol-gel method. The complex impedance of the materials was investigated. The grain resistance, boundary resistance and activation energy of the nanoparticles were calculated according to Arrhenius equation. According to calculating results, the active capacity of pure TiO 2 nanoparticles has been improved because of nano-CeO 2 coating. An optimal CeO 2 content of 4.9 mol% was achieved. The high resolution electron microscopy images of CeO 2 -TiO 2 nanoparticles showed that TiO 2 nanoparticles, as a core, were covered by CeO 2 nanoparticles. The average size of CeO 2 coating TiO 2 nanoparticles was about 70 nm. Scanning electron microscopy observation indicted that CeO 2 nanoparticle coating improved the separation, insulation, and stability the CeO 2 -TiO 2 nanoparticles, which was benefit to the activity of materials

Ce doped NiO nanoparticles as selective NO2 gas sensor

Science.gov (United States)

Gawali, Swati R.; Patil, Vithoba L.; Deonikar, Virendrakumar G.; Patil, Santosh S.; Patil, Deepak R.; Patil, Pramod S.; Pant, Jayashree

2018-03-01

Metal oxide gas sensors are promising portable gas detection devices because of their advantages such as low cost, easy production and compact size. The performance of such sensors is strongly dependent on material properties such as morphology, structure and doping. In the present study, we report the effect of cerium (Ce) doping on nickel oxide (NiO) nano-structured thin film sensors towards various gases. Bare NiO and Ce doped NiO nanoparticles (Ce:NiO) were synthesized by sol-gel method. To understand the effect of Ce doping in nickel oxide, various molar percentages of Ce with respect to nickel were incorporated. The structure, phase, morphology and band-gap energy of as-synthesized nanoparticles were studied by XRD, SEM, EDAX and UV-vis spectroscopy. Thin film gas sensors of all the samples were prepared and subjected to various gases such as LPG, NH3, CH3COCH3 and NO2. A systematic and comparative study reveals an enhanced gas sensing performance of Ce:NiO sensors towards NO2 gas. The maximum sensitivity for NO2 gas is around 0.719% per ppm at moderate operating temperature of 150 °C for 0.5% Ce:NiO thin film gas sensor. The enhanced gas sensing performance for Ce:NiO is attributed to the distortion of crystal lattice caused by doping of Ce into NiO.

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.

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.

A comparative study of LaBr3(Ce(3+)) and CeBr3 based gamma-ray spectrometers for planetary remote sensing applications.

Science.gov (United States)

Kozyrev, A; Mitrofanov, I; Owens, A; Quarati, F; Benkhoff, J; Bakhtin, B; Fedosov, F; Golovin, D; Litvak, M; Malakhov, A; Mokrousov, M; Nuzhdin, I; Sanin, A; Tretyakov, V; Vostrukhin, A; Timoshenko, G; Shvetsov, V; Granja, C; Slavicek, T; Pospisil, S

2016-08-01

The recent availability of large volume cerium bromide crystals raises the possibility of substantially improving gamma-ray spectrometer limiting flux sensitivities over current systems based on the lanthanum tri-halides, e.g., lanthanum bromide and lanthanum chloride, especially for remote sensing, low-level counting applications or any type of measurement characterized by poor signal to noise ratios. The Russian Space Research Institute has developed and manufactured a highly sensitive gamma-ray spectrometer for remote sensing observations of the planet Mercury from the Mercury Polar Orbiter (MPO), which forms part of ESA's BepiColombo mission. The Flight Model (FM) gamma-ray spectrometer is based on a 3-in. single crystal of LaBr3(Ce(3+)) produced in a separate crystal development programme specifically for this mission. During the spectrometers development, manufacturing, and qualification phases, large crystals of CeBr3 became available in a subsequent phase of the same crystal development programme. Consequently, the Flight Spare Model (FSM) gamma-ray spectrometer was retrofitted with a 3-in. CeBr3 crystal and qualified for space. Except for the crystals, the two systems are essentially identical. In this paper, we report on a comparative assessment of the two systems, in terms of their respective spectral properties, as well as their suitability for use in planetary mission with respect to radiation tolerance and their propensity for activation. We also contrast their performance with a Ge detector representative of that flown on MESSENGER and show that: (a) both LaBr3(Ce(3+)) and CeBr3 provide superior detection systems over HPGe in the context of minimally resourced spacecraft and (b) CeBr3 is a more attractive system than LaBr3(Ce(3+)) in terms of sensitivities at lower gamma fluxes. Based on the tests, the FM has now been replaced by the FSM on the BepiColombo spacecraft. Thus, CeBr3 now forms the central gamma-ray detection element on the MPO spacecraft.

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.

Uso dos equipamentos de proteção individual em unidade de terapia intensiva Uso de los equipamientos de protección individual en unidad de terapia intensiva Use of personal protective equipment in the intensive care unit

Directory of Open Access Journals (Sweden)

Ellen Lucy Vale de Souza

2011-07-01

Full Text Available Apesar dos grandes avanços na prevenção de infeções hospitalares, a adesão aos equipamentos de proteção individual continua sendo um importante desafio entre os trabalhadores da saúde. Foi objetivo deste estudo analisar a utilização de equipamentos de proteção individual (EPIs pelos trabalhadores de enfermagem nas unidades de terapia intensiva de um hospital de emergência localizado no município de Fortaleza/CE, Brasil. Trata-se de um estudo exploratório, descritivo e transversal, realizado nas quatro unidades da referida instituição. A coleta de dados ocorreu nos meses de setembro e outubro de 2008, através de entrevista e observação, respeitando-se os aspetos ético-legais. Participaram do estudo 45 trabalhadores da equipe de enfermagem da UTI, nas categorias de técnico e auxiliar. Os resultados revelam que os técnicos e auxiliares de enfermagem têm consciência da importância do uso de EPIs, porém não os utilizam com a devida frequência na prática de seu cotidiano laboral, devido a problemas de ordem comportamental e de logística. Os resultados deste estudo oferecem bases para uma reflexão quanto à importância da identificação de facilidades e dificuldades encontradas pela equipe na utilização dos EPIs.Apesar de los grandes avances en la prevención de infecciones hospitalarias, la adhesión a los equipamientos de protección individual sigue siendo un importante desafío entre los trabajadores de la salud. Este estudio tuvo por objetivo analizar la utilización de equipamientos de protección individual (EPIs por los trabajadores de enfermería en las unidades de terapia intensiva de un hospital de emergencia localizado en el municipio de Fortaleza/CE, Brasil. Se trata de un estudio exploratorio, descriptivo y transversal, realizado en las cuatro unidades de la referida institución. La recolección de datos transcurrió durante los meses de septiembre a octubre de 2008, mediante entrevista y observaci

Largada pelo marido! O estigma vivido por mulheres em Tianguá-CE ¡Dejada por el marido! El estigma vivido por mujeres en Tianguá-Ce Abandoned by her husband! The stigma confronted by women in Tianguá-Ce

Directory of Open Access Journals (Sweden)

Virginia Moreira

2007-04-01

Full Text Available Este artigo descreve um estudo sobre a vivência de rompimento do casamento de mulheres deixadas por seus maridos. Teve como objetivo compreender como mulheres de Tianguá - CE - Brasil vivenciavam a ruptura da relação, descrevendo os fatores reconhecidos como agentes do rompimento da relação amorosa. A partir da experiência vivida morando em Tianguá, nossa hipótese era que essas mulheres vivenciavam o rompimento como uma experiência estigmatizada de desestruturação de sua vida pessoal. Utilizando a metodologia fenomenológica crítica com base na filosofia de Merleau-Ponty, realizamos entrevistas semi-estruturadas com 15 mulheres, com idade entre 25 e 35 anos, que haviam morado com o parceiro e com ele tinham filhos e cuja relação marital tinha se rompido havia pelo menos dois anos. Os resultados confirmaram nossas suspeitas: as mulheres colaboradoras deste estudo se sentiam estigmatizadas, encontrando no corpo um aparato para as emoções que expressavam sua dor e reconhecendo-se como incompetentes e discriminadas pela cultura patriarcal local.Este artículo describe un estudio sobre la vivencia de rompimiento del casamiento de mujeres dejadas por sus maridos. Tuvo como objetivo comprender cómo mujeres de Tianguá-Ce-Brasil vivenciaban la ruptura de la relación, describiendo los factores reconocidos como agentes del rompimiento de la relación amorosa. La partir de la experiencia vivida viviendo en Tianguá, nuestra hipótesis era la de que esas mujeres vivenciaban el rompimiento como una experiencia estigmatizada de desestructuración de su vida personal. Utilizando la metodología fenomenológica crítica, con base en la filosofía de Merleau-Ponty, realizamos encuestas semiestructuradas con 15 mujeres, con edad entre 25 y 35 años, que habían vivido con la pareja y con él tenían hijos y cuya relación matrimonial se había roto hacía por lo menos dos años. Los resultados confirmaron nuestras sospechas: las mujeres

The role of charge transfer in the oxidation state change of Ce atoms in the TM13-CeO2(111) systems (TM = Pd, Ag, Pt, Au): a DFT + U investigation.

Science.gov (United States)

Tereshchuk, Polina; Freire, Rafael L H; Ungureanu, Crina G; Seminovski, Yohanna; Kiejna, Adam; Da Silva, Juarez L F

2015-05-28

Despite extensive studies of transition metal (TM) clusters supported on ceria (CeO2), fundamental issues such as the role of the TM atoms in the change in the oxidation state of Ce atoms are still not well understood. In this work, we report a theoretical investigation based on static and ab initio molecular dynamics density functional theory calculations of the interaction of 13-atom TM clusters (TM = Pd, Ag, Pt, Au) with the unreduced CeO2(111) surface represented by a large surface unit cell and employing Hubbard corrections for the strong on-site Coulomb correlation in the Ce f-electrons. We found that the TM13 clusters form pyramidal-like structures on CeO2(111) in the lowest energy configurations with the following stacking sequence, TM/TM4/TM8/CeO2(111), while TM13 adopts two-dimensional structures at high energy structures. TM13 induces a change in the oxidation state of few Ce atoms (3 of 16) located in the topmost Ce layer from Ce(IV) (itinerant Ce f-states) to Ce(III) (localized Ce f-states). There is a charge flow from the TM atoms to the CeO2(111) surface, which can be explained by the electronegativity difference between the TM (Pd, Ag, Pt, Au) and O atoms, however, the charge is not uniformly distributed on the topmost O layer due to the pressure induced by the TM13 clusters on the underlying O ions, which yields a decrease in the ionic charge of the O ions located below the cluster and an increase in the remaining O ions. Due to the charge flow mainly from the TM8-layer to the topmost O-layer, the charge cannot flow from the Ce(IV) atoms to the O atoms with the same magnitude as in the clean CeO2(111) surface. Consequently, the effective cationic charge decreases mainly for the Ce atoms that have a bond with the O atoms not located below the cluster, and hence, those Ce atoms change their oxidation state from IV to III. This increases the size of the Ce(III) compared with the Ce(IV) cations, which builds-in a strain within the topmost Ce layer, and

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.

Comparison of Efficiencies and Mechanisms of Catalytic Ozonation of Recalcitrant Petroleum Refinery Wastewater by Ce, Mg, and Ce-Mg Oxides Loaded Al2O3

Directory of Open Access Journals (Sweden)

Chunmao Chen

2017-02-01

Full Text Available The use of catalytic ozonation processes (COPs for the advanced treatment of recalcitrant petroleum refinery wastewater (RPRW is rapidly expanding. In this study, magnesium (Mg, cerium (Ce, and Mg-Ce oxide-loaded alumina (Al2O3 were developed as cost efficient catalysts for ozonation treatment of RPRW, having performance metrics that meet new discharge standards. Interactions between the metal oxides and the Al2O3 support influence the catalytic properties, as well as the efficiency and mechanism. Mg-Ce/Al2O3 (Mg-Ce/Al2O3-COP reduced the chemical oxygen demand by 4.7%, 4.1%, 6.0%, and 17.5% relative to Mg/Al2O3-COP, Ce/Al2O3-COP, Al2O3-COP, and single ozonation, respectively. The loaded composite metal oxides significantly increased the hydroxyl radical-mediated oxidation. Surface hydroxyl groups (–OHs are the dominant catalytic active sites on Al2O3. These active surface –OHs along with the deposited metal oxides (Mg2+ and/or Ce4+ increased the catalytic activity. The Mg-Ce/Al2O3 catalyst can be economically produced, has high efficiency, and is stable under acidic and alkaline conditions.

ASPECTOS DAS INTERAÇÕES SOCIAIS DE CRIANÇAS PORTADORAS DE HIV PELA ÓTICA DOS SEUS CUIDADORES

Directory of Open Access Journals (Sweden)

Marli Teresinha Gimeniz Galvão

2013-01-01

Full Text Available La ocurrencia de mujeres infectadas por VIH ha resultado en nacimiento de niños expuestos o infectados por el virus. El objetivo de la investigación fue identificar aspectos de las interacciones sociales de niños portadores del VIH. Estudio exploratorio-descriptivo y cualitativo, desarrollado en servicio de referencia en VIH/sida, en Fortaleza-CE, entre julio y diciembre del 2009. Participaron cuidadoras de 13 niños infectados por VIH. Entrevistas semiestructuradas y contenidos analizados han permitido la elaboración de categorías: miedo del contagio del VIH en el seno familiar; falta de sigilo y preparo de profesionales de salud en la atención a portadores de VIH/sida, exclusión social en la familia, vecindad y ambiente escolar. En conclusión, las interacciones sociales de niños se muestran perjudicadas. Miedo, exclusión y prejuicio permean la vida de cuidadores, debido al recelo de que los niños serán discriminados por la sociedad. Este estudio revela informaciones que pueden subsidiar atención integral de enfermería.

Cobertura vacinal de adultos deficientes visuais e as características sociodemográficas

Directory of Open Access Journals (Sweden)

Lorita Marlena Freitag Pagliuca

2014-01-01

Full Text Available Se evaluaran la cobertura vacunal y las características sociodemográficas de adultos deficientes visuales. Investigación exploratoria, descriptiva y cuantitativa, con 41 adultos de asociación de ciegos de Fortaleza-CE, Brasil, de febrero a mayo/2011. Se realizó entrevista con instrumento semiestructurado con nombre, sexo, escolaridad y situación vacunal. Los resultados señalaron grupo predominante del sexo masculino (63,41%; edad entre 20-49 años (95,92% y escolaridad secundaria (79,92%. Recordaron tener recibido vacuna doble tipo adulto (82,93%, tríplice viral (51,22%, fiebre amarilla (21,95%, influenza según estaciones (29,27% e, no recibieron pneumocócica y hepatitis B. Intervalos de confianza señalaron que la mayoría de las personas con deficiencia, según recuerdo, se encontraba vacunada con doble adulto y tríplice viral. Las personas con deficiencia visual no reciben cartilla de vacunación adecuada para lectura, están parcialmente inmunizadas y susceptibles a enfermedades inmunoprevinibles. Medidas de intervención de enfermería son necesarias para planes de acciones a las principales medidas de prevención.

CUIDADO À CRIANÇA COM DISTROFIA MUSCULAR DEPENDENTE DE TECNOLOGIA NO DOMICÍLIO: CONCEPÇÃO DE MÃES

Directory of Open Access Journals (Sweden)

Fabíola Sousa de Oliveira

2013-01-01

Full Text Available El objetivo fue comprender el concepto de madres sobre la atención a niños con Distrofia Muscular dependientes de tecnología. Estudio descriptivo, cualitativo, en hospital de la red terciaria de Fortaleza-CE, Brasil, y en hogares de niños con distrofia muscular tratados por el Programa de Asistencia Ventiladora en Hogares. Los informantes fueron las madres de niños con distrofia con edades entre cero y cuatro años, ingresados en la Unidad de Pacientes Especiales y los que fueron acompañados por el Programa. Se realizó entrevista semiestructurada y después del análisis, surgieron las categorías: Atención al niño con distrofia muscular y Sentimientos y expectativas de madres de niños con distrofia muscular. Algunas madres consideraron la vida diaria del niño normal y otras refrieron dificultades relacionadas a la ansiedad y miedo de la muerte. Es importante que enfermeros capaciten a las madres para la atención dirigida, permitiendo la superación de momentos de tensión.

A INSERÇÃO DO ENFERMEIRO NO CENTRO DE APOIO PSICOSSOCIAL (CAPS: REFLETINDO SOBRE A PRÁTICA PROFISSIONAL

Directory of Open Access Journals (Sweden)

ADRIANO RODRIGUES DE SOUZA

2008-01-01

Full Text Available Estudio reflexivo cuya meta fue analizar la práctica del enfermero del CAPS, buscando un paralelo entre las experiencias ya relatadas y presentes en la literatura y los preceptos de la Reforma Psiquiátrica. Para orientar este pensamiento tomamos por base el relato de la experiencia de uno de los autores sobre su práctica profesional como enfermero de un CAPS de Fortaleza-CE, haciendo un paralelo con otras ya relatadas y presentes en publicaciones constantes en los bancos de datos de Bireme. Basados en nuestro análisis fue posible constatar la existencia de dificultades del enfermero para inserirse y de identificar su papel/función dentro de los nuevos servicios, posiblemente debido a ausencia de percepción de los nuevos preceptos de la atención en salud mental. Consideramos, también, que hay mucho que hacer y transformar en la práctica en salud mental, lo cual exige el comprometimiento de los diversos segmentos sociales en la construcción de una red de atención que asista la nueva orden de preceptos y de solicitudes emocionales.

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.

Study of structural and transport properties of nanostructured CeO{sub 2}, Ce{sub 1-x}Ru{sub x}O{sub 2} and Ce{sub 1-x}In{sub x}O{sub 2} thin films

Energy Technology Data Exchange (ETDEWEB)

Rangel, R.; Chavez-Chavez, L. [Division de Estudios de Posgrado, Facultad de Ingenieria Quimica, Universidad Michoacana de S.N.H. (Mexico); Martinez, E. [Centro de Investigacion en Materiales Avanzados, S.C. (CIMAV), Nuevo Leon (Mexico); Bartolo-Perez, P. [Departamento de Fisica Aplicada, CINVESTAV-IPN, Merida, Yucatan (Mexico)

2012-06-15

The present work reports for the first time thin films prepared from Ce{sub 1-x}M{sub x}O{sub 2-{delta}} (M = Ru, In) solid solutions for application as gas sensors. The CeO{sub 2}, Ce{sub 0.95}Ru{sub 0.05}O{sub 2} and Ce{sub 0.95}In{sub 0.05}O{sub 2} thin films were prepared by means of the RF sputtering process onto Si (111) substrates. The deposition conditions were carried out at 500 C varying the deposition time. Targets were prepared via sol-gel process starting from C{sub 6}H{sub 9}O{sub 6}In, Ru{sub 3}(CO){sub 12} and Ce(C{sub 2}H{sub 3}O{sub 2}){sub 3} . 1.5H{sub 2}O compounds and using a ceramic method to consolidate them. The samples were characterized by means of XRD, SEM, and AFM. Their thickness was measured using a profilometer. The results herein obtained regarding the microstructure and transport properties indicate that these materials can be used as gas sensors. (Copyright copyright 2012 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

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.

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...

The Trade in Medicinal Animals in Northeastern Brazil

Science.gov (United States)

Ferreira, Felipe Silva; Albuquerque, Ulysses Paulino; Coutinho, Henrique Douglas Melo; Almeida, Waltécio de Oliveira; Alves, Rômulo Romeu da Nóbrega

2012-01-01

Over the centuries, a significant part of the Brazilian fauna is widely sold, more specifically in retail stores or street markets. The objective was to characterize the sale of medicinal animals in five large northeast cities. Information about the sale of zootherapeutic items was obtained in the cities of Aracaju-SE, Fortaleza-CE, Maceio-AL, Recife-PE, and Salvador-BA. A total of 68 animal species were sold for medicinal purposes in the cities studied; these are the first results on the use and sale of zootherapeutics in the markets of Aracaju, Fortaleza, and Salvador and first recorded on the medicinal use of the Achatina fulica, Trachycardium muricatum, Philodryas olfersii, Desmodus rotundus, and Leptodactylus vastus. Knowledge of the fauna utilized popular medicine is indispensable for conservation, demonstrating that research on this subject is necessary to determine appropriate practices for the management of the fauna. PMID:22216053

The Trade in Medicinal Animals in Northeastern Brazil

Directory of Open Access Journals (Sweden)

Felipe Silva Ferreira

2012-01-01

Full Text Available Over the centuries, a significant part of the Brazilian fauna is widely sold, more specifically in retail stores or street markets. The objective was to characterize the sale of medicinal animals in five large northeast cities. Information about the sale of zootherapeutic items was obtained in the cities of Aracaju-SE, Fortaleza-CE, Maceio-AL, Recife-PE, and Salvador-BA. A total of 68 animal species were sold for medicinal purposes in the cities studied; these are the first results on the use and sale of zootherapeutics in the markets of Aracaju, Fortaleza, and Salvador and first recorded on the medicinal use of the Achatina fulica, Trachycardium muricatum, Philodryas olfersii, Desmodus rotundus, and Leptodactylus vastus. Knowledge of the fauna utilized popular medicine is indispensable for conservation, demonstrating that research on this subject is necessary to determine appropriate practices for the management of the fauna.

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.

A novel gamma-ray detector with submillimeter resolutions using a monolithic MPPC array with pixelized Ce:LYSO and Ce:GGAG crystals

Energy Technology Data Exchange (ETDEWEB)

Kato, T., E-mail: katou.frme.8180@asagi.waseda.jp [Research Institute for Science and Engineering, Waseda University, 3-4-1, Ohkubo, Shinjuku, Tokyo (Japan); Kataoka, J.; Nakamori, T.; Miura, T.; Matsuda, H.; Kishimoto, A. [Research Institute for Science and Engineering, Waseda University, 3-4-1, Ohkubo, Shinjuku, Tokyo (Japan); Sato, K.; Ishikawa, Y.; Yamamura, K.; Nakamura, S.; Kawabata, N. [Solid State Division, Hamamatsu Photonics K. K., 1126-1, Ichino-cho, Hamamatsu, Shizuoka (Japan); Ikeda, H. [ISAS/JAXA, 3-1-1, Yoshinodai, Chuo-ku, Sagamihara-shi, Kanagawa (Japan); Yamamoto, S. [Kobe City College of Technology, 8-3, Gakuenhigashimati, Nishi-ku, Kobe-shi, Hyougo 651-2194 (Japan); Kamada, K. [Materials Research Laboratory, Furukawa Co., Ltd., 1-25-13, Kannondai, Tsukuba, Ibaraki 305-0856 (Japan)

2013-01-21

We have developed a large-area monolithic Multi-Pixel Photon Counter (MPPC) array consisting of 4×4 channels with a three-side buttable package. Each channel has a photosensitive area of 3×3 mm{sup 2} and 3600 Geiger mode avalanche photodiodes (APDs). For typical operational gain of 7.5×10{sup 5} at +20 °C, gain fluctuation over the entire MPPC device is only ±5.6%, and dark count rates (as measured at the 1 p.e. level) amount to ≤400kcps per channel. We first fabricated a gamma-ray camera consisting of the MPPC array with one-to-one coupling to a Ce-doped (Lu,Y){sub 2}(SiO{sub 4})O (Ce:LYSO) crystal array (4×4 array of 3×3×10 mm{sup 3} crystals). Energy and time resolutions of 11.5±0.5% (FWHM at 662 keV) and 493±22ps were obtained, respectively. When using the charge division resistor network, which compiles signals into four position-encoded analog outputs, the ultimate positional resolution is estimated as 0.19 mm in both X and Y directions, while energy resolution of 10.2±0.4% (FWHM) was obtained. Finally, we fabricated submillimeter Ce:LYSO and Ce-doped Gd{sub 3}Ga{sub 3}Al{sub 2}O{sub 12} (Ce:GGAG) scintillator matrices each consisting of 1.0×1.0, 0.7×0.7 and 0.5×0.5 mm{sup 2} pixels, to further improve the spatial resolution. In all types of Ce:LYSO and Ce:GGAG matrices, each crystal was clearly resolved in the position histograms when irradiated by a {sup 137}Cs source. The energy resolutions for 662 keV gamma-rays for each Ce:LYSO and Ce:GGAG scintillator matrix were ≤14.3%. These results suggest excellent potential for its use as a high spatial medical imaging device, particularly in positron emission tomography (PET). -- Highlights: ► We developed a newly designed large-area monolithic MPPC array. ► We obtained fine gain uniformity, and good energy and time resolutions when coupled to the LYSO scintillator. ► We fabricated gamma-ray camera consisting of the MPPC array and submillimeter pixelized LYSO and GGAG scintillators. ► In

Preparation and characterization of Ce-doped HfO{sub 2} nanoparticles

Energy Technology Data Exchange (ETDEWEB)

Gálvez-Barboza, S. [Centro de Investigación en Química Aplicada, Departamento de Materiales Avanzados, Blvd. Enrique Reyna Hermosillo #140, C.P. 25294 Saltillo, Coahuila (Mexico); Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. Industria Metalúrgica # 1062 Parque Industrial, C.P. 25900 Ramos Arizpe, Coahuila (Mexico); González, L.A. [Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. Industria Metalúrgica # 1062 Parque Industrial, C.P. 25900 Ramos Arizpe, Coahuila (Mexico); Puente-Urbina, B.A.; Saucedo-Salazar, E.M. [Centro de Investigación en Química Aplicada, Departamento de Materiales Avanzados, Blvd. Enrique Reyna Hermosillo #140, C.P. 25294 Saltillo, Coahuila (Mexico); García-Cerda, L.A., E-mail: luis.garcia@ciqa.edu.mx [Centro de Investigación en Química Aplicada, Departamento de Materiales Avanzados, Blvd. Enrique Reyna Hermosillo #140, C.P. 25294 Saltillo, Coahuila (Mexico)

2015-09-15

Highlights: • Ce-doped HfO{sub 2} nanoparticles were prepared by a modified solgel method. • Ce-doped HfO{sub 2} nanoparticles have a semispherical shape with sizes between 6 and 11.5 nm. • The samples doped with 10% in weight of Ce directly crystallized in a cubic structure. • A quick, straightforward and effective route for the preparation of Ce-doped nanoparticles. - Abstract: A modified solgel method to synthesize Ce-doped HfO{sub 2} nanoparticles was carried out using a precursor material prepared with cerium nitrate, hafnium chloride, citric acid and ethylene glycol. The obtained precursor material was calcined at 500 and 700 °C for 2 h in air. The influence of the concentration of Ce and the calcination temperature was studied to observe the structural and morphological changes of the obtained materials. For the characterization, X-ray diffraction (XRD), transmission electron microscopy (TEM) and Raman scattering (RS) were employed. The XRD patterns shown that the Ce-doped HfO{sub 2} undergoes a structural transformation from monoclinic to cubic phase, which is significantly dependent on the Ce content and calcination temperature. TEM images have also confirmed the existence of semispherical nanoparticles with sizes between 6 and 11.5 nm.

Auditoria em enfermagem como estratégia de um marketing profissional Auditoría en enfermería como estrategia de un marketing profesional Nursing audit as a professional marketing strategy

Directory of Open Access Journals (Sweden)

Maria Suêuda Costa

2004-08-01

Full Text Available O trabalho relata uma experiência em auditoria com a equipe interdisciplinar nos serviços públicos de saúde na cidade de Fortaleza-CE e objetiva descrever a dimensão funcional das ações de auditoria e a importância para a enfermagem; definir um modelo como estratégia de marketing profissional para o enfermeiro. As bases teóricas da administração contemporânea foram utilizadas para convergir com as experiências da prática de auditagem. Propõe-se uma nova estratégia de auditoria em enfermagem em benefício da significação profissional, pois atualmente os enfermeiros executam ações com identidade de um marketing científico, mas no nível do inconsciente.La investigación relata una experiencia en auditoría con el equipo interdisciplinaria en los servicios públicos de salud de la ciudad de Fortaleza-CE y objetiva describir la dimensión funcional de las acciones y la importancia para la enfermería; definir un modelo como estrategia de marketing profesional para los enfermeros. Fueron utilizadas bases teóricas de la administración actual para convergir con las experiencias de la práctica de auditoría. Se propone una nueva estrategia de auditoría en enfermería en beneficio de la significación profesional pues los enfermeros ejecen acciones con identidad de un marketing científico, pero en el nivel del inconsciente.This study relates an audit experience with an interdisciplinary team in public health services at Fortaleza-CE and aims to describe the functional dimension of these audit actions and the its importance for nursing; to define a model with a professional marketing strategy for the nurse. Theoretical bases of contemporary Administration were used to converge with the audit practice experiences. One proposes a new audit nursing strategy in favor of the professional significance, because the nurse currently conducts actions with a scientific marketing identity, but at the unconscious level.

Análise da capacidade diagnóstica dos exames preventivos do câncer de colo uterino Análisis de la capacidad diagnóstica de los exámenes preventivos del cáncer de cuello uterino Analysis of the capacity of preventive diagnostic tests for cervical cancer

Directory of Open Access Journals (Sweden)

Thaís Marques Lima

2012-01-01

Full Text Available OBJETIVO: Avaliar a capacidade diagnóstica dos exames citológicos, colposcópico e histológico na detecção de lesões pré-malignas. MÉTODOS: Estudo documental, retrospectivo, com abordagem quantitativa, realizado no Instituto de Prevenção do Câncer (IPC, em Fortaleza-CE. A população foi composta por prontuários de 112 mulheres que possuíam o resultado dos três exames. Adotou-se o teste de qui-quadrado e considerou-se estatisticamente significativo quando p OBJETIVO: Evaluar la capacidad diagnóstica de los exámenes citológicos, colposcópico e histológico en la detección de lesiones pre-malignas. MÉTODOS: Estudio documental, retrospectivo, con abordaje cuantitativo, realizado en el Instituto de Prevención del Cáncer (IPC, en Fortaleza-CE. La población estuvo compuesta por historias clínicas de 112 mujeres que poseían el resultado de los tres exámenes. Se adoptó el test de Chi-cuadrado y se consideró estadísticamente significativo cuando p OBJECTIVE: To evaluate the diagnostic capacity of cytological, colposcopic, and histological exams on the detection of premalignant lesions. METHODS: A documentary, retrospective study, with a quantitative approach, conducted in the Cancer Prevention Institute (CPI, in Fortaleza-CE. The population consisted of medical records of 112 women who had the results of these three exams. We adopted the chi-square test and considered it statistically significant when p <0.05. We applied sensitivity and specificity, positive predictive value (PPV and negative predictive value (NPV for cytology and colposcopy. RESULTS: From the comparison between the diagnostic tests, we observed that cytology obtained a sensitivity of 89.8%, a specificity of 35.7%, a PPV of 90.7% and an NPV of 33.3%. Colposcopy achieved a sensitivity of 84.7%, a specificity of 50%, a PPV of 92.2% and an NPV of 31.8%. CONCLUSION: We found that these tests presented sensitivity and specificity that can alternate with one

FIRST-PRINCIPLES PHASE DIAGRAM OF THE Ce-Th SYSTEM

International Nuclear Information System (INIS)

Landa, A; Soderlind, P

2005-01-01

Actinide physics has seen a remarkable focus the last decade or so due to the combination of improved experimental diamond-anvil-cell techniques and the development of fast computers and more advanced theory. All f-electron systems are expected to have multiphase phase diagrams due to the sensitivity of the f-electron band to external influences such as pressure and temperature. For instance, compression of an f-electron metal generally causes the occupation of f-states to change due to the shift of these bands relative to others. This can in some cases, as in the Ce-Th system, cause the crystal to adopt a lower symmetry structure at elevated pressures. Here we study the phase stabilities of Ce, Th, and the Ce-Th system as a function of compression. Theoretically, both Ce and Th metals are rather well described within the DFT, although a proper treatment of the Ce-Th alloys has not yet been presented. In the present paper we revisit this problem by applying the modern theory of random alloys based on the coherent potential approximation (CPA)

Surface nucleation and independent growth of Ce(OH)4 within confinement space on modified carbon black surface to prepare nano-CeO2 without agglomeration

Science.gov (United States)

Zhang, Xinyue; Xia, Chunhui; Li, Kaitao; Lin, Yanjun

2018-04-01

Highly dispersed negative carboxyl groups can be formed on carbon black (CB) surface modified with strong nitric acid. Therefore positive cations can be uniformly absorbed by carboxyl groups and precipitated within a confinement space on modified CB surface to prepare highly dispersed nanomaterials. In this paper, the formation and dispersion status of surface negative carboxyl groups, adsorption status of Ce3+, surface confinement nucleation, crystallization and calcination process were studied by EDS, SEM, and laser particle size analysis. The results show that the carboxyl groups formed on modified CB surface are highly dispersed, and Ce3+ cations can be uniformly anchored by carboxyl groups. Therefore, highly dispersed Ce3+ can react with OH- within a confinement surface region to form positive nano-Ce(OH)4 nuclei which also can be adsorbed by electrostatic attraction. After independent growth of Ce(OH)4 without agglomeration, highly dispersed CeO2 nanoparticles without agglomeration can be prepared together with the help of effectively isolates by CO2 released in the combustion of CB.

The magnetic properties of Ce/Pd surface alloys investigated using DFT

KAUST Repository

Shuttleworth, I.G.

2014-06-01

The surface alloys that form between Ce and Pd(1 1 1), Pd(1 0 0) and both unreconstructed and missing-row type Pd(1 1 0) at low Ce coverage ( θCe=19ML) have shown permanent magnetism that is mediated in part by an RKKY-like delocalized Ce 6s-Pd 5s interaction. The Pd 4d states are significantly affected by alloying and their behavior cannot be explained by a purely spin-dependent Hamiltonian. Experimental observations of changes to the Pd 4d states are explained and the implications of Ce/Pd magnetism in reforming catalysis are discussed. © 2014 Elsevier B.V. All rights reserved.

The magnetic properties of Ce/Pd surface alloys investigated using DFT

KAUST Repository

Shuttleworth, I.G.

2014-01-01

The surface alloys that form between Ce and Pd(1 1 1), Pd(1 0 0) and both unreconstructed and missing-row type Pd(1 1 0) at low Ce coverage ( θCe=19ML) have shown permanent magnetism that is mediated in part by an RKKY-like delocalized Ce 6s-Pd 5s interaction. The Pd 4d states are significantly affected by alloying and their behavior cannot be explained by a purely spin-dependent Hamiltonian. Experimental observations of changes to the Pd 4d states are explained and the implications of Ce/Pd magnetism in reforming catalysis are discussed. © 2014 Elsevier B.V. All rights reserved.

Assessing Hubbard-corrected AM05+U and PBEsol+U density functionals for strongly correlated oxides CeO_2 and Ce_2O_3

International Nuclear Information System (INIS)

Weck, Philippe F.; Kim, Eunja

2016-01-01

The structure–property relationships of bulk CeO_2 and Ce_2O_3 have been investigated using AM05 and PBEsol exchange–correlation functionals within the frameworks of Hubbard-corrected density functional theory (DFT+U) and density functional perturbation theory (DFPT+U). Compared with conventional PBE+U, RPBE+U, PW91+U and LDA+U functionals, AM05+U and PBEsol+U describe experimental crystalline parameters and properties of CeO_2 and Ce_2O_3 with superior accuracy, especially when +U is chosen close to its value derived by the linear-response approach. Lastly, the present findings call for a reexamination of some of the problematic oxide materials featuring strong f- and d-electron correlation using AM05+U and PBEsol+U.

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.

Laser clad Ni-base alloy added nano- and micron-size CeO 2 composites

Science.gov (United States)

Zhang, Shi Hong; Li, Ming Xi; Cho, Tong Yul; Yoon, Jae Hong; Lee, Chan Gyu; He, Yi Zhu

2008-07-01

Micron-size Ni-base alloy (NBA) powders are mixed with both 1.5 wt% (%) micron-CeO 2 (m-CeO 2) and also 1.0-3.0% nano-CeO 2 (n-CeO 2) powders. These mixtures are coated on low carbon steel (Q235) by 2.0 kW CO 2 laser cladding. The effects on microstructures, microhardness and wear resistance of the coating by the addition of m- and n-CeO 2 powders to NBA (m- and n-CeO 2/NBA) have been investigated. Addition to the primary phases of γ-Ni, Cr 23C 6 and Ni 3B of NBA coating, CeNi 3 shows up both in m- and n-CeO 2/NBA coatings and CeNi 5 appears only in n-CeO 2/NBA coating. Directional dendrite and coarse equiaxed dendrite are grown in m-CeO 2/NBA coating from interface to central zone, whereas multi-oriented dendrite and fine equiaxed dendrite growth by addition of n-CeO 2. The microhardness and wear resistance of coatings are greatly improved by CeO 2 powder addition, and compared to the addition of 1.0% and 3.0%, 1.5% n-CeO 2/NBA is the best. Hardness and wear resistance of the coating improves with decreasing CeO 2 size from micron to nano.

{sup 115}In NQR studies of CeRhIn{sub 5} and CeCoIn{sub 5} under high pressure

Energy Technology Data Exchange (ETDEWEB)

Kohori, Y. [Department of Physics, Faculty of Science, Chiba University, Chiba 263-8522 (Japan)]. E-mail: kohori@faculty.chiba-u.jp; Taira, H. [Graduate School of Science and Technonogy, Chiba University, Chiba 263-8522 (Japan); Fukazawa, H. [Graduate School of Science and Technonogy, Chiba University, Chiba 263-8522 (Japan); Kohara, T. [Graduate School of Material Science, University of Hyogo, Hyogo 678-1297 (Japan); Iwamoto, Y. [Division of Cargo and Transportation Science, Kobe University, Kobe 658-0022 (Japan); Matsumoto, T. [National Institite of Material Science, Tsukuba 305-0044 (Japan); Maple, M.B. [Department of Physics and Institute for Pure and Applied Physical Science, University of California, San Diego, La Jolla, CA 92093, USA (United States)

2006-02-09

We have carried out{sup 115}In nuclear quadrupole resonance (NQR) measurements in CeRhIn{sub 5} and CeCoIn{sub 5} under presure P. The nuclear spin-lattice relaxation rates, 1/T{sub 1}, of{sup 115}In indicated that the anisotropic superconductivity with line nodes occurred near an antiferromagnetic state. The application of P suppressed the antiferromagnetic, AF, spin fluctuations and moves the system away from the AF state to the non-magnetic Fermi liquid state. The P dependence of 1/T{sub 1} in the superconducting state of CeCoIn{sub 5} shows that the magnitude of the superconducting energy gap scales with its T{sub C} up to 3.0 GPa.

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.

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%)

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.

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.

Sleep and rest needs of seniors: a study grounded in the work of Henderson Necesidades relacionadas al sueño/reposo de ancianos: estudio fundamentado en Henderson Necessidades relacionadas ao sono/repouso de idosos: estudo fundamentado em Henderson

OpenAIRE

Jorge Wilker Bezerra Clares; Maria Célia de Freitas; Francisca Tereza de Galiza; Paulo César de Almeida

2012-01-01

OBJECTIVE: To identify the sleep/rest needs of an elderly population cared for by the Family Health Strategy, based on Virginia Henderson's theoretical framework. METHOD: This descriptive, quantitative study was conducted from May to June, 2011 through the application of a questionnaire to 52 seniors living in an area covered by a Primary Health Care (PHC) unit in Fortaleza, CE, Brazil. The data were analyzed using statistical software. RESULTS: the sleep disorders most frequently reported by...

Diabetes gestacional na perspectiva de mulheres grávidas hospitalizadas

OpenAIRE

Araújo, Márcio Flávio Moura; Pessoa, Sarah Maria Fraxe; Damasceno, Marta Maria Coelho; Zanetti, Maria Lúcia

2013-01-01

Estudo qualitativo fenomenológico, que teve como objetivo compreender o significado das experiências vivenciadas por mulheres com diabetes mellitus gestacional. Participaram 12 pacientes internadas em uma maternidade de Fortaleza-CE, Brasil, que manifestaram seus sentimentos e percepções por meio de entrevista aberta e desenhos. O material empírico foi transcrito na íntegra e, posteriormente, organizado e analisado pelo método fenomenológico. Os resultados evidenciaram dois temas: (1) Vivenci...

Diabetes gestacional na perspectiva de mulheres grávidas hospitalizadas Diabetes gestacional desde la perspectiva de mujeres embarazadas hospitalizadas Gestational diabetes from the perspective of hospitalized pregnant women

OpenAIRE

Márcio Flávio Moura Araújo; Sarah Maria Fraxe Pessoa; Marta Maria Coelho Damasceno; Maria Lúcia Zanetti

2013-01-01

Estudo qualitativo fenomenológico, que teve como objetivo compreender o significado das experiências vivenciadas por mulheres com diabetes mellitus gestacional. Participaram 12 pacientes internadas em uma maternidade de Fortaleza-CE, Brasil, que manifestaram seus sentimentos e percepções por meio de entrevista aberta e desenhos. O material empírico foi transcrito na íntegra e, posteriormente, organizado e analisado pelo método fenomenológico. Os resultados evidenciaram dois temas: (1) Vivenci...

Markers of vulnerability for cervical cancer in HIV-infected women Marcadores de vulnerabilidad al cáncer de cuello uterino en mujeres infectadas por el HIV Marcadores de vulnerabilidade ao câncer de colo do útero em mulheres infectadas pelo HIV

OpenAIRE

Daniele Mary Silva de Brito; Marli Teresinha Gimeniz Galvão; Maria Lúcia Duarte Pereira

2011-01-01

This study identifies the dimensions and markers of vulnerability among women infected with HIV regarding the development of cervical cancer. A total of 76 HIV-infected women cared for in Fortaleza, CE, Brazil from October 2007 to June 2008 participated in the study. Semi-structured interviews were used to collect socio-demographic, clinical, and sexual data, as well as situations related to health care follow-up and the prevention of cervical cancer. Identified situations were grouped accord...

Universidade e a extensão universitária: a visão dos moradores das comunidades circunvizinhas University and university extension: the view of the residents from surrounding communities

Directory of Open Access Journals (Sweden)

Marcelo Costa Fernandes

2012-12-01

Full Text Available A universidade é uma instituição criada para atender às necessidades do país. Uma das estratégias que a universidade utiliza para a formação de um profissional cidadão é baseada na extensão universitária. Objetivou-se no estudo investigar a relação atual existente entre uma universidade e as comunidades circunvizinhas a partir da visão dos seus moradores. A pesquisa é de natureza descritiva com abordagem qualitativa. Foi realizada no município de Fortaleza-CE. A população da pesquisa foi constituída por moradores da comunidade. O estudo teve início após a aprovação do projeto pelo Comitê de Ética em Pesquisa. Os resultados foram divididos em cinco categorias para uma melhor organização da discussão dos resultados. Percebeu-se que a extensão universitária possui uma função essencial no ensino superior brasileiro principalmente para a formação de uma integração entre a comunidade e a universidade, objetivando, com isso, uma maior transformação de nossa realidade social.The university is an institution created to meet the needs of the country. One of the strategies that the university uses to train a professional citizen is based on the university extension. The purpose of this study was to investigate the existing relationship between a university and its surrounding communities from the perspective of its inhabitants. Descriptive qualitative methodology was used in the research. It was held in Fortaleza, State of Ceara. The research population consisted of community residents. The study began after the project was approved by the Research Ethics Committee. Results were divided into five categories to better organize the discussion. It was possible to observe that university extension plays a key role in the Brazilian higher education, mainly in the formation of integration between community and university, aiming at a major transformation of our social reality.

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.

Highly porous CeO2 nanostructures prepared via combustion synthesis for supercapacitor applications

DEFF Research Database (Denmark)

Kadirvelayutham, Prasanna; Santhoshkumar, P.; Jo, Yong Nam

2017-01-01

We report highly porous CeO2 nanostructures (CeO2 NSs) suitable for supercapacitor applications, synthesized using a fast and cost effective combustion approach. Due to its prominent valence states of Ce3+/Ce4+, CeO2 has emerged as a promising pseudocapacitive material. The drawback of using CeO2...... as a supercapacitor electrode is its poor electrical conductivity. We overcame this drawback of CeO2 by creating oxygen vacancies on its surface, which act to enhance its electrical conductivity. The physical interpretation of the as-synthesized CeO2 NSs shows that they have dense active sites and diffusion pathways...... that enhance the performance of the electrode in a supercapacitor. Electrodes prepared using the synthesized CeO2 NSs exhibited the initial specific capacitance of 134.6 F g-1 and superior cycling stability of 92.5% after 1000 cycles at a constant current density of 1 A g-1, indicating their potential...

Ce activated potassium bromide phosphor for lyoluminescence dosimetry of ionizing radiation

International Nuclear Information System (INIS)

Bhujbal, P.M.; Dhoble, S.J.

2013-01-01

The lyoluminescence (LL) properties of gamma irradiated KBr:Ce phosphor are reported in this paper. The samples were prepared by wet chemical route. The prepared material was characterized by lyoluminescence technique. LL in KBr:Ce have been recorded for different gamma doses. The nature of variation of peak LL intensity is found to be sublinear with gamma irradiation dose, and the peak LL intensity is found to be dependent on concentrations of added Ce in the samples. Negligible fading in the prepared KBr:Ce (0.5 mol%) sample is observed. -- Highlights: • The LL intensities are found to be dependent on concentrations of Ce ion. • The LL intensities are found to be dependent on gamma rays radiation dose. • Dose response of KBr:Ce (0.5 mol%) is observed linear between 0.08 and 1.00 kGy. • The prepared material may be useful for ionizing radiation dosimetry

Room-temperature synthesis and characterization of porous CeO2 thin films

International Nuclear Information System (INIS)

Chu, Dewei; Masuda, Yoshitake; Ohji, Tatsuki; Kato, Kazumi

2012-01-01

CeO 2 thin films with hexagonal-shaped pores were successfully prepared by a facile electrodeposition at room temperature combined with an etching process. By using electrodeposited ZnO nanorods as a soft template, the morphology, and microstructure of the CeO 2 could be controlled. TEM observation indicated that as-prepared CeO 2 film is composed of nanocrystals with average size of several nanometers, while XPS analysis showed the coexistence of Ce 3+ and Ce 4+ in the film. The photoluminescence properties of CeO 2 films were measured, which showed much higher sensitivity compared to bare substrate. (Copyright copyright 2012 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

Highly active and durable Ca-doped Ce-SBA-15 catalyst for biodiesel production

International Nuclear Information System (INIS)

Thitsartarn, Warintorn; Maneerung, Thawatchai; Kawi, Sibudjing

2015-01-01

In this work, Ca-doped Ce-incorporated SBA-15 (Ca/CeS) catalyst was successfully synthesized by using direct synthesis of Ce-incorporated SBA-15 followed by impregnation of CaO (calcium oxide). The maximum Si/Ce molar ratio that Ce atoms can be incorporated successfully into the mesoporous framework was found to be 5 (CeS-5). After the impregnation of 30 wt. % Ca, the obtained 30Ca/CeS-5 catalysts showed the superior catalytic performance for transesterification reaction of palm oil with methanol and also the higher catalytic activity as compared to other supported catalysts, i.e. CaO/CeO 2 and CaO–CeO 2 /SBA-15. This can be attributed to the well-dispersion of CaO on the CeS-5 support surface. Furthermore, it was found that the leaching of Si, Ce and Ca from the catalyst into biodiesel produced was negligible (i.e. <1 ppm after 7 cycles), indicating the strong interaction between CaO and CeS-5 support. As a result, the 30Ca/CeS-5 catalyst can be reused at least 15 cycles with insignificant decrease in catalytic activity, offering the efficient CaO-based catalyst for biodiesel production. - Highlights: • Mesoporous Ca-based catalyst was successfully developed for biodiesel production. • Catalyst exhibited high activity towards transesterification (FAME yield > 98%). • Catalyst can be effectively re-used at least 15 cycles. • Extremely low catalyst contaminant (<1 ppm) was presented

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.

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.

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

Structure and Chemical Bond of Thermoelectric Ce-Co-Sb Skutterudites

Institute of Scientific and Technical Information of China (English)

无

2001-01-01

The correlations among composition,structure,chemical bond and thermoelectric property of skutterudites CoSb3 and CeCo5Fe3Sb12 have been studied by using density function and discrete variation (DFT-DVM) method.Three models for this study were proposed and calculated by which the "rattling" pattern was described.Model 1 is with Ce in the center,model 2 is with Ce away the center and near to Sb,and model 3 is also with Ce away the center but near to Fe.The calculated results show that in model 3,the ionic bond is the strongest,but the covalent bond is the weakest.Due to the different changes between ionic and covalent bond,there is less difference in the stability among the models 1,2 and 3.Therefore,these different models can exist at the same time,or can translate from one to another more easily.In other words,the "rattling" pattern has taken place.Unfilled model of CoSb3,without Ce and Fe,is called model 4.The covalent bond of Co-Sb or Fe-Sb in models 1,2 and 3 is weaker than that of Co-Sb in model 4,as some electrical cloud of Sb takes part in the covalent bond of Ce-Sb in the filled models.The result is consistent with the experimental result that the thermal conductivity of CeCo5Fe3Sb12 is lower than that of CoSb3,and the thermoelectric property of CeCo5Fe3Sb12 is superior to that of CoSb3.

Optical spectroscopy of Ce{sup 3+} in BaLiF{sub 3}

Energy Technology Data Exchange (ETDEWEB)

Yamaga, M.; Imai, T. [Department of Electrical and Electronic Engineering, Faculty of Engineering, Gifu University, Gifu 501-1193 (Japan); Shimamura, K.; Fukuda, T. [Institute for Materials Research, Tohoku University, Sendai 980-8577 (Japan); Honda, M. [Faculty of Science, Naruto University of Education, Naruto 772-8502 (Japan)

2000-04-10

The optical absorption spectrum of Ce{sup 3+} in BaLiF{sub 3} crystals consists of several overlapping broad bands. The Ce{sup 3+} luminescence shows broad bands due to moderate electron-phonon interaction in the 5d excited state. Three distinct Ce{sup 3+} sites in the crystal were assigned from the optical spectra. The luminescence spectrum from the dominant Ce{sup 3+} site has a large Stokes shift ({approx}8300 cm{sup -1}), whereas that from one of the two minor Ce{sup 3+} sites has a Stokes shift of half that magnitude ({approx}4400 cm{sup -1}), assuming that the excitation spectrum is almost the same as for the dominant site. The peaks of the lowest-energy absorption and luminescence bands for the other minor Ce{sup 3+} site are shifted to lower energy, and the Stokes shift energy ({approx}7800 cm{sup -1}) is close to that for the dominant site. These three Ce{sup 3+} sites are assigned to configurations of Ce{sup 3+} accompanied by different charge compensators. This assignment is consistent with preliminary electron spin-resonance results indicating that there exist two tetragonal and two orthorhombic Ce{sup 3+} centres in the absence of the cubic centre. (author)

Asociación, discriminación y Constitución: los límites entre la autonomía asociativa y el derecho de los socios —y aspirantes a serlo— a no ser discriminados

Directory of Open Access Journals (Sweden)

David Giménez Gluck

2010-09-01

Full Text Available Este artículo tiene por objeto el análisis de la relación entre el derecho de los socios a su auto-organización interna, sin injerencias procedentes de los poderes públicos, y el derecho de estos mismos socios —y aspirantes a serlo— a no ser discriminados en su relación con la asociación. Así como el principio democrático ha sido aceptado como un límite legal frente al derecho a la auto-organización interna, los derechos de los socios —y aspirantes a serlo— en su relación inter privatos con la asociación forman también parte, según el TC, del contenido esencial del derecho de asociación y, por tanto, limitan la capacidad autoorganizativa de la asociación. Entre estos derechos se sitúan la imposibilidad de la no admisión o la expulsión de socios por causas arbitrarias, injustificadas, entre las que, en opinión del autor, se deben encuadrar aquellas que se basen en los rasgos especialmente odiosos que señala la Constitución, como la raza o el género, cuando dichos rasgos nada tengan que ver con la finalidad de la asociación. En todo caso, los Tribunales deberán hacer una ponderación, caso a caso, entre el art. 22 CE en su dimensión auto-organizativa y el art. 22 CE en su dimensión inter privatos en coordinación con el art. 14 CE, sin que una posible futura previsión legal prohibiendo las prácticas discriminatorias pudieran tacharse de inconstitucional. This article analyses the relationship between the rights of the members of an association to self-organization without interferences from the State, and the rights of the members—and those who want to be members—to not be discriminated against in their connection to the association. As the democratic principle has been accepted as a legal limit to internal self-organization, the rights of the members and those who want to be members in their relationship inter privatos with the association are part of the essential content of the right to association

Adsorption and Reaction of Acetone over CeOX(111) Thin Films

International Nuclear Information System (INIS)

Mullins, David R.; Senanayake, Sanjaya D.; Gordon, Wesley O.; Overbury, Steven H.

2009-01-01

This study reports the interaction of acetone (CH3COCH3), the simplest ketone, with well ordered CeO2(111) thin film surfaces. The fully oxidized CeO2(111) surface shows a weak interaction with acetone with the sole desorption product (TPD) being acetone at 210 K. The chemisorbed molecule binds to the surface as the ?1-acetone species rather than through a bridge-bonded dioxy-configuration. Exposure of a CeO2(111) surface to acetone at 600K removes oxygen as CO and results in the conversion of Ce4+ to Ce3+. Acetone chemisorbs strongly on reduced CeO2-x(111) with molecular acetone desorbing near 500 K. Decomposition also occurs with H2 desorbing between 450 and 600 K and C reacting with O in the ceria to desorb above 650 K. A stable species exists from 200 to 500 K on the reduced surface that has three unique types of C. High resolution C 1s XPS spectra indicate these are Ce-CH2, C-CH3 and C-O species. C k-edge NEXAFS indicates the presence of C(double b ond)C and C(double b ond)O bonds. It is postulated that the intermediate is a carbanion bonded through both O and C atoms to Ce cations.

Preparation and Characterization of Graphite Waste/CeO2 Composites

Science.gov (United States)

Kusrini, E.; Utami, C. S.; Nasruddin; Prasetyanto, E. A.; Bawono, Aji A.

2018-03-01

In this research, the chemical modification of graphite waste with CeO2 was developed and characterized. Graphite waste was pretreated with mechanical to obtain the size 200 mesh (75 μm), and thermal methods at 110°C oven for 6 hours. Here, we demonstrate final properties of graphite before modification (GBM), activated graphite (GA) and graphite/CeO2 composite with variation of 0.5, 1 and 2 g of CeO2 (G0.5; G1; G2). The effect of CeO2 concentration was observed. The presence of cerium in modified graphite samples (G0.5; G1; G2) were analyzed using SEM-EDX. The results show that the best surface area was found in G2 is 26.82 m2/g. The presence of CeO2 onto graphite surface does not significantly increase the surface area of composites.

Analisis TLC entre Colombia y Estados Unidos: Estados de Virginia y Washington

OpenAIRE

Pulecio Leon, Gloria Daniela

2016-01-01

el punto central de esta investigación será identificar las principales fortalezas y oportunidades de las empresas colombianas frente al Tratado de Libre Comercio con Estados Unidos, con miras al desarrollo de un proceso de exportación no tradicional e internacionalización, en los estados de Virginia y Washington. Para esto debemos primero reconocer las oportunidades que el mercado colombiano ha aprovechado en los estados de Virginia y Washington, segundo revisar si el tratado de libre ...

Selective Synthesis of Mesoporous and Nanorod CeVO4 without Template

International Nuclear Information System (INIS)

Zhu Ling; Li Qin; Li Jiayan; Liu Xiangdong; Meng Jian; Cao Xueqiang

2007-01-01

A simple and efficient method has been established for the selective synthesis of mesoporous and nanorod CeVO 4 with different precursors by sonochemical method. CeVO 4 nanorod can be simply synthesized by ultrasound irradiation of Ce(NO 3 ) 3 and NH 4 VO 3 in aqueous solution without any surfactant or template. While mesoporous CeVO 4 with high specific surface area can be prepared with Ce(NO 3 ) 3 , V 2 O 5 and NaOH in the same way. Mesoporous CeVO 4 has a specific surface area of 122 m 2 g -1 and an average pore size of 5.2 nm; CeVO 4 nanorods have a diameter of about 5 nm, and a length of 100-150 nm. The ultrasound irradiation and ammonia in the reactive solution are two key factors in the formation of such rod-like products. X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric (TG) and differential thermal analyses (DTA), UV/vis absorption spectroscopy and Brunauer-Emmett-Teller (BET) were applied for characterization of the as-prepared products

Luminescence properties of Y3Al5O12:Ce nanoceramics

International Nuclear Information System (INIS)

Zorenko, Yu.; Voznyak, T.; Gorbenko, V.; Zych, E.; Nizankovski, S.; Dan'ko, A.; Puzikov, V.

2011-01-01

Comparative analysis of the luminescent properties of Y 3 Al 5 O 12 :Ce (YAG:Ce) transparent optical ceramics (OS) with those of single crystal (SC) and single crystalline film (SCF) analogues has been performed under excitation by pulsed synchrotron radiation in the fundamental absorption range of YAG host. It has been shown that the properties of YAG:Ce OC are closer to the properties of the SCF counterpart, where Y Al antisite defects are completely absent, rather than to the properties of SC of this garnet with large concentration of Y Al antisite defects. At the same time, the luminescence spectra of YAG:Ce OC show weak emission bands in the 200-470 nm range related to Y Al antisite defects and charged oxygen vacancies (F + and F centers). YAG:Ce OS also possesses significantly larger contribution of slow components in the Ce 3+ luminescence decay under high-energy excitation in comparison with SC and SCF of this garnet due to the involvement of antisite defects, charged oxygen vacancies as well as boundaries of grains in the energy transfer processes from the host to the Ce 3+ ions.

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.

A interação enfermeira-recém-nascido durante a prática de aspiracão orotraqueal e coleta de sangue La interacción enfermera-recién nacido durante la práctica de aspirción orotraqueal y recolección de sangre Interaction nurse-newborn during orotracheal aspiration and blood collection

Directory of Open Access Journals (Sweden)

Karla Maria Carneiro Rolim

2006-12-01

Full Text Available Refletindo nossa vivência como enfermeiras na Unidade de Terapia Intensiva Neonatal (UTIN, assim como da urgência em assistir o recém-nascido (RN internado, objetivamos descrever a interação entre enfermeira e RN durante a prática do cuidado na aspiração orotraqueal, na coleta de sangue para exames laboratoriais com ênfase nas respostas fisiológicas e comportamentais. Pesquisa exploratória, descritiva, na qual utilizamos a Teoria de Paterson e Zderad (1976. Realizada numa maternidade pública, em Fortaleza-CE, com seis enfermeiras e 21 bebês de risco. Coletamos os dados no período de abril a junho de 2003. Os resultados demonstraram que os RNs, ao interagirem com os enfermeiros, apresentaram aumento da freqüência cardíaca, diminuição da saturação de oxigênio, expressão de choro, agitação, tranqüilidade, calma. O enfermeiro, na maioria das vezes, utilizou o toque técnico, mas pudemos presenciar, as relações Eu-Tu e Eu-Isso com base na Teoria Humanística a qual pode ser praticada no cotidiano do cuidado ao bebê.Reflexionando en nuestra vivencia como enfermeras en la Unidad de Cuidados Intensivos Neonatal (UTIN, así como en la urgencia de asistir al recién nacido (RN internado, tuvimos como objetivo describir la interacción entre enfermera y RN durante la práctica del cuidado en la aspiración orotraqueal y en la recolección de sangre para exámenes de laboratorio con énfasis en las respuestas fisiológicas y de comportamiento. Se trata de una investigación exploratoria, descriptiva, en la cual utilizamos la Teoría de Paterson y Zderad (1976. Se llevó a cabo en una maternidad pública, en Fortaleza-CE, con seis enfermeras y 21 bebés de riesgo. Recolectamos los datos en el período de abril a junio del 2003. Los resultados demostraron que los RNs, al interactuar con los enfermeros, presentaron aumento de la frecuencia cardiaca, disminución de la saturación de oxígeno, expresión de llanto, agitaci

Mulheres doadoras de leite humano Mujeres donantes de leche humana Reasons women donate breast milk

Directory of Open Access Journals (Sweden)

Marli Teresinha Gimeniz Galvão

2006-06-01

Full Text Available OBJETIVO: verificar algumas variáveis do perfil sócio-demográfico de doadoras de leite humano no Banco de Leite e identificar as razões que as fazem doar seu leite. MÉTODOS: estudo exploratório de caráter descritivo, com abordagem qualitativa, realizado em maio de 2003 com 11 doadoras de leite humano em maternidade pública de Fortaleza-CE. Para coleta de dados utilizou-se formulário semi-estruturado. RESULTADOS: a maioria apresentava idade entre 16 e 20 anos, eram casadas, possuíam instrução do ensino fundamental até o universitário. O motivo que levou as nutrizes a doar seu leite era o ingurgitamento mamário e eram encaminhadas por profissionais de saúde. A maioria desconhecia os benefícios proporcionados pelo aleitamento materno para a mãe e filho, bem como a importância do Banco de Leite. CONSIDERAÇÕES FINAIS: sugere-se que as mulheres em geral devem receber informações a respeito dos benefícios e importância do aleitamento natural, incluindo informações sobre doação do leite humano, mediante os bancos de leite.OBJETIVO: se tuvo como objetivos verificar algunas variables del perfil socio-demográfico de donantes de leche humana en el Banco de Leche e identificar las razones que las llevan a donar su leche. MÉTODOS: estudio exploratorio de carácter descriptivo, con abordaje cualitativo, realizado en mayo del 2003 con 11 donantes de leche humana en una maternidad pública de Fortaleza-CE. Para la recolección de datos se utilizó un formulario semi-estructurado. RESULTADOS: la mayoría tenía edades comprendidas entre los 16 y 20 años, casadas, poseían instrucción de enseñanza fundamental. El motivo que llevó a las nutrices a donar su leche fue la turgencia mamaria siendo encaminadas por profesionales de salud. La mayoría desconocía los beneficios proporcionados por la lactancia materna tanto para la madre como para el hijo, así como la importancia del Banco de Leche. CONSIDERACIONES FINALES: se sugiere

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. ...

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.

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

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.

Blue emitting KSCN:xCe phosphor for solid state lighting

Energy Technology Data Exchange (ETDEWEB)

Chikte, Devayani, E-mail: devi.awade@gmail.com [G.N. Khalsa College, Matunga, Mumbai 400019 (India); Omanwar, S.K. [Department of Physics, S.G.B. Amravati University, Amravati (India); Moharil, S.V. [Department of Physics, R.T.M. Nagpur University, Nagpur 440010 (India)

2014-01-15

The intense blue emitting phosphor KSCN:xCe (x=0.005, 0.01, 0.02, 0.04) is synthesized by a simple, time saving, economical method of re-crystallization through aqueous solution at 353 K. Photoluminescence measurements showed that the said phosphor exhibits emission with good intensity peaking at 450 nm corresponding to d→f transitions of Ce{sup 3+} ion. The excitation spectra monitored at 450 nm shows small peak at 282 nm and broad intense excitation band peaking at 350 nm. The latter lies in near ultraviolet (350–410 nm) emission of UV LED. The phosphor KSCN:0.02Ce{sup 3+} shows CIE 1931 color coordinates as (0.1484, 0.0602) whereas the commercial blue phosphor BAM:Eu{sup 2+} shows the color co-ordinates as (0.1417, 0.1072), respectively, indicating better color purity for KSCN: 0.02Ce{sup 3+} compared to the BAM:Eu{sup 2+} phosphor. The color coordinates of KSCN: 0.02Ce{sup 3+} phosphor (0.1484, 0.0602) are nearer to the color coordinate for blue color suggested by the color systems EBUPAL/SECAM, sRGB Blue as well as Adobe blue(0.15, 0.06). -- Highlights: • Novel phosphor KSCN:xCe prepared for the first time. • Method is simple, time saving, economical, easy to handle. • Intense, blue, Characteristic Ce{sup 3+} emission at 450 nm. • nUV excitation, suitable for solid state lighting.

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