3,774 research outputs found
Effect Of Pitavastatin On Vascular Reactivity In Hypercholesterolemic Rabbits.
Pitavastatin is the newest statin available in Brazil and likely the one with fewer side effects. Thus, pitavastatin was evaluated in hypercholesterolemic rabbits in relation to its action on vascular reactivity. To assess the lowest dose of pitavastatin necessary to reduce plasma lipids, cholesterol and tissue lipid peroxidation, as well as endothelial function in hypercholesterolemic rabbits. Thirty rabbits divided into six groups (n = 5): G1 - standard chow diet; G2 - hypercholesterolemic diet for 30 days; G3 - hypercholesterolemic diet and after the 16th day, diet supplemented with pitavastatin (0.1 mg); G4 - hypercholesterolemic diet supplemented with pitavastatin (0.25 mg); G5 - hypercholesterolemic diet supplemented with pitavastatin (0.5 mg); G6 - hypercholesterolemic diet supplemented with pitavastatin (1.0 mg). After 30 days, total cholesterol, HDL, triglycerides, glucose, creatine kinase (CK), aspartate aminotransferase (AST), alanine aminotransferase (ALT) were measured and LDL was calculated. In-depth anesthesia was performed with sodium thiopental and aortic segments were removed to study endothelial function, cholesterol and tissue lipid peroxidation. The significance level for statistical tests was 5%. Total cholesterol and LDL were significantly elevated in relation to G1. HDL was significantly reduced in G4, G5 and G6 when compared to G2. Triglycerides, CK, AST, ALT, cholesterol and tissue lipid peroxidation showed no statistical difference between G2 and G3-G6. Significantly endothelial dysfunction reversion was observed in G5 and G6 when compared to G2. Pitavastatin starting at a 0.5 mg dose was effective in reverting endothelial dysfunction in hypercholesterolemic rabbits.1034-1
Effect of pitavastatin on vascular reactivity in hypercholesterolemic rabbits
Background: Pitavastatin is the newest statin available in Brazil and likely the one with fewer side effects. Thus, pitavastatin was evaluated in hypercholesterolemic rabbits in relation to its action on vascular reactivity. Objective: To assess the lowest dose of pitavastatin necessary to reduce plasma lipids, cholesterol and tissue lipid peroxidation, as well as endothelial function in hypercholesterolemic rabbits. Methods: Thirty rabbits divided into six groups (n = 5): G1-standard chow diet; G2-hypercholesterolemic diet for 30 days; G3-hypercholesterolemic diet and after the 16th day, diet supplemented with pitavastatin (0.1 mg); G4-hypercholesterolemic diet supplemented with pitavastatin (0.25 mg); G5-hypercholesterolemic diet supplemented with pitavastatin (0.5 mg); G6-hypercholesterolemic diet supplemented with pitavastatin (1.0 mg). After 30 days, total cholesterol, HDL, triglycerides, glucose, creatine kinase (CK), aspartate aminotransferase (AST), alanine aminotransferase (ALT) were measured and LDL was calculated. In-depth anesthesia was performed with sodium thiopental and aortic segments were removed to study endothelial function, cholesterol and tissue lipid peroxidation. The significance level for statistical tests was 5%. Results: Total cholesterol and LDL were significantly elevated in relation to G1. HDL was significantly reduced in G4, G5 and G6 when compared to G2. Triglycerides, CK, AST, ALT, cholesterol and tissue lipid peroxidation showed no statistical difference between G2 and G3-G6. Significantly endothelial dysfunction reversion was observed in G5 and G6 when compared to G2. Conclusion: Pitavastatin starting at a 0.5 mg dose was effective in reverting endothelial dysfunction in hypercholesterolemic rabbits1031412sem informaçã
Levantamento, uso da Agrobiodiversidade e as redes de troca realizados pelas mulheres agricultoras no Projeto de Assentamento MĂĄrtires de Abril
As mulheres do campo acumulam conhecimento sobre os seus ecossistemas incluindo a gestĂŁo das pragas, a conservação do solo, o desenvolvimento e uso dos recursos genĂ©ticos de plantas e animais(FAO 1999). Estudos sobre a agrobiodiversidade podem promover subsĂdios para se estabelecer diretrizes polĂticas para gerar recursos e auxĂlios na elaboração de planos de desenvolvimento para Assentamentos da Reforma AgrĂĄria. Desta forma, o presente estudo teve como objetivo o levantamento e uso da agrobiodiversidade assim como, identificar as redes de trocas de sementes e mudas no PAS-MA na Ilha de Mosqueiro, ParĂĄ -Brasil. Foram utilizados mĂ©todos participativos, identificação aplicação de questionĂĄrio semi-estruturado Ă pessoas-chave enfatizando a questĂŁo de gĂȘnero. Foi levantado e espacializado o uso dos recursos naturais nas ĂĄreas de produção e realizada a categorização das redes de troca de sementes e mudas no Assentamento. Dos 59% de questionĂĄrios respondidos, foram citadas 386 etnovariedades inseridas em 256 etnoespĂ©cies, das quais 151 estĂŁo representadas ao nĂvel de gĂȘnero ou espĂ©cie, distribuĂdas em 63 famĂlias botĂąnicas. Foram identificadas seis categorias de uso para as etnovariedades e sua localização nos espaços do Assentamento. A origem das sementes e mudas utilizadas nas redes de troca tem procedĂȘncia tanto do meio urbano quanto do meio rural. A obtenção destas plantas e mudas foi categorizada por meio das relaçÔes que envolvem os assentados com outros assentados, com as InstituiçÔes e com o meio ambiente. As agricultoras de pequena escala desenvolvem papel importante na preservação dos recursos genĂ©ticos das plantas e na conservação e manejo da agrobiodiversidade
FamĂlias normais e crescimento de funçÔes polimonogĂ©nicas
Doutoramento em MatemĂĄticaEste trabalho tem como objectivo contribuir para um estudo de famĂlias
normais de funçÔes meromórficas especiais assim como para o estudo do
comportamento assimptĂłtico de funçÔes polimonogĂ©nicas no domĂnio da
AnĂĄlise Hipercomplexa.
Neste contexto, obtemos condiçÔes necessårias e/ou suficientes de
normalidade para famĂlias de funçÔes meromĂłrficas especiais, nomeadamente
a generalização do Teorema de Marty e a Lema de Zalcman.
Para a classe de funçÔes polimonogénicas são demonstradas desigualdades
do tipo de Cauchy e algumas generalizaçÔes de resultados da teoria de
Wiman e Valiron. Consequentemente, são obtidas relaçÔes entre o måximo
mĂłdulo da função, o termo mĂĄximo e Ăndice central da sua respectiva sĂ©rie de
Taylor-Almansi. Aplicam-se estes resultados ao crescimento assimptĂłtico
desta classe de funçÔes.
Como aplicação, são obtidos teoremas sobre soluçÔes assimptóticas de
determinadas equaçÔes diferenciais de derivadas parciais e a classificação de
algumas soluçÔes das mesmas.The aim of this work is to provide some contributions to the study of normal
family of special meromorphic functions as well as to the study of the
asymptotic behaviour of polymonogenic functions in the framework of
Hypercomplex Analysis.
In this context we have obtained necessary and/or sufficient normality
conditions for families of special meromorphic functions, in particular, a
generalization of Martyâs criterion and also of Zalcmanâs lemma.
We prove inequalities of Cauchy-type estimates for a class of polymonogenic
functions and also some generalizations of results of the Wiman-Valiron theory.
Consequently, relations of the maximum modulus, the maximum term and the
norm of the central index with respect to their Taylor-Almansi series expansion
are obtained. These results are applied to the asymptotic growth behaviour of
those functions classes.
As applications we establish theorems on the asymptotic of solutions of certain
partial differential equations which allow us to provide a classification of some
of such solutions
O Papel da Amplitude Visuoatencional e da ConsciĂȘncia FonĂȘmica na Aprendizagem da Leitura
National audienceThis study aimed to verify the relationship between visual attention span (VAS), phonemic awareness (PA) and reading performance in a sample of 48 students from the 1st, 3rd and 5th grade from a public elementary school in Sao Paulo. Children were assessed in three sessions through a battery of tasks, which included single word reading, VAS, PA, nonverbal intelligence, phonological memory and letter identiïŹ cation threshold. Results showed that the VAS and PA correlated with performance in reading from 1st to 5th grade, and they play a more important role at 1st grade, but remain relevant in 3rd and 5th grade, especially in the reading of nonwords and irregular words.Este estudo objetivou veriïŹ car as relaçÔes entre amplitude visuoatencional (AVA), consciĂȘncia fonĂȘmica (CF) e desempenho em leitura em uma amostra de 48 alunos de 1Âș, 3Âș e 5Âș anos do ensino fundamental de uma escola pĂșblica de SĂŁo Paulo. As crianças foram avaliadas em trĂȘs sessĂ”es em tarefas de leitura de palavras isoladas, AVA, CF, inteligĂȘncia nĂŁo verbal, memĂłria fonolĂłgica e li-miar de identiïŹ cação de letras. Os resultados indicam que a AVA e a CF se relacionam com a leitura desde o 1Âș atĂ© o 5Âș ano e que essas relaçÔes sĂŁo mais fortes no 1Âș ano, mas continuam tendo um papel relevante no 3Âș ano e no 5Âș ano, principalmente na leitura de pseudopalavras e palavras irregulares
EvidĂȘncias cientĂficas de adoecimento do trabalhador portuĂĄrio para o raciocĂnio clĂnico da enfermagem
OBJECTIVE To identify scientific evidence of occupational illness of dockworkers published in the literature. METHOD systematic review of the literature, developed according to the Cochrane method. The databases searched were: Cochrane, LILACS, MEDLINE/PubMed, CINAHL and SciELO. Studies from 1988 to 2014 were selected. The data were analyzed according to the level of evidence and Strengthening the Reporting of Observational Studies in Epidemiology. RESULTS We included 14 studies, in which 11 (78.6%) were from international journals. The year of 2012 showed greater number of studies. All studies were classified as: Level of Evidence 4, highlighting lung cancer, musculoskeletal and ischemic diseases, causal link in chemical risks. CONCLUSION The development of preventive measures should especially include chemical exposure of workers applying the clinical reasoning of nurses' environmental knowledge to care for illnesses.OBJETIVO Identificar evidĂȘncias cientĂficas de adoecimento ocupacional do trabalhador portuĂĄrio publicadas na literatura. MĂTODO RevisĂŁo sistemĂĄtica da literatura, construĂda conforme o mĂ©todo Cochrane. As bases de dados pesquisadas foram Cochrane, LILACS, MEDLINE/PubMed, CINAHL e SciELO. Foram selecionados artigos publicados de 1988 a 2014. Os dados foram analisados conforme o NĂvel de EvidĂȘncia e Strengthening the Reporting of Observational Studies in Epidemiology. RESULTADOS Foram selecionadas 14 publicaçÔes, das quais 11 (78,6%) de revistas internacionais. O ano de 2012 reuniu maior nĂșmero de publicaçÔes no perĂodo de estudo. Todas as publicaçÔes pertenciam ao NĂvel de EvidĂȘncia 4, destacando o cĂąncer pulmonar, doenças osteomusculares e isquĂȘmicas, com nexo causal nos riscos quĂmicos. CONCLUSĂO A elaboração de medidas preventivas deve prever especialmente a exposição quĂmica do trabalhador, aplicando ao raciocĂnio clĂnico do enfermeiro um conhecimento ambiental para a assistĂȘncia aos adoecimentos.OBJETIVO Identificar evidencias cientĂficas de enfermizaciĂłn ocupacional del trabajador portuario publicadas en la literatura. MĂTODO RevisiĂłn sistemĂĄtica de la literatura, planteada conforme al mĂ©todo Cochrane. Las bases de datos investigadas fueron Cochrane, LILACS, MEDLINE/PubMed, CINAHL y SciELO. Fueron seleccionados artĂculos publicados de 1998 a 2014. Los datos fueron analizados conforme al Nivel de Evidencia y Strengthening the Reporting of Observational Studies in Epidemiology. RESULTADOS Fueron seleccionadas 14 publicaciones, de las que 11 (78,6%) fueron de revistas internacionales. El año del 2012 reuniĂł mayor nĂșmero de publicaciones en el perĂodo de estudio. Todas las publicaciones pertenecĂan al Nivel de Evidencia 4, destacando el cĂĄncer pulmonar, las enfermedades osteomusculares e isquĂ©micas, con nexo causal en los riesgos quĂmicos. CONCLUSIĂN La elaboraciĂłn de medidas preventivas debe prever especialmente la exposiciĂłn quĂmica del trabajador, aplicando al razonamiento clĂnico del enfermero un conocimiento ambiental para la asistencia a las enfermizaciones
Dinamica dos fluidos computacional para posicionamento de sensor e estimação paramétrica em embarcação
Acoustic Doppler Current Profiler (ADCP) sensors measure water inflows and are essential to evaluate the Flow Curve (FC) of rivers. The FC is used to calibrate hydrological models responsible for planning the electrical dispatch of power plants in several countries. Therefore, errors in those measures propagate to the final energy cost evaluation. This work proposes the use of Computational Fluid Dynamics (CFD) for the design of a small Autonomous Surface Vessel (ASV), optimized to operate with an ADCP sensor. Based on the simulations, it is possible to estimate parameters of its physical model, an important step for the implementation of automatic control in the vehicle, as well as to determine the ideal position of the sensor, so that it suffers minimal flow disturbances. The method proves to be a valuable tool, allowing the generation of relevant information for the project even before prototypes are manufactured. The analyzes were validated with the aid of practical tests in the final ASV model, called AERO4RIVER.Os sensores do tipo Perfilador HidroacĂșstico de Correntes (ADCP) medem velocidade e vazĂŁo de ÂŽagua e sĂŁo essenciais para avaliar a Curva-VazĂŁo (FC) dos rios. A FC ÂŽe utilizada para calibrar modelos hidrolĂłgicos responsĂĄveis pelo planejamento do despacho elĂ©trico de usinas de diversos paĂses. Portanto, os erros nessas medidas se propagam para a avaliação final do custo de energia. Esse trabalho propĂ”e a utilização de DinĂąmica dos Fluidos Computacional (CFD) para o projeto de uma Embarcação AutĂŽnoma de SuperfĂcie (ASV) de pequeno porte otimizada para operar com um sensor ADCP. Com base nas simulaçÔes ÂŽe possĂvel estimar parĂąmetros de seu modelo fĂsico, importante etapa para a implementação de controle automĂĄtico no veĂculo, assim como determinar a posição ideal para o sensor, de forma que sofra mĂnimos distĂșrbios do escoamento. O mĂ©todo se mostra uma ferramenta valiosa, permitindo gerar informaçÔes relevantes para o projeto antes ainda da fabricação de protĂłtipos. Validou-se as anĂĄlises com o auxĂlio de testes prĂĄticos no modelo final do ASV, chamado AERO4RIVER
Necessidade de informação de tĂ©cnicos do Instituto Brasileiro de Geografia e EstatĂstica
IBGE social scientist's needs of information, for the performance of their work concerned with information for planning, are studied on the basis of data gathered through individual interviews, structured by questionnaire in which the critical incident technique was employed. The main sources of information for these social scientists consist of statistical data and related documents, besides books and periodicals, Portuguese and English being their principal languages. Accessibility and operational flow are the principal factors influencing use of information sources. The institution's library is used, through intermediaries, when there are informational needs other than statistical data collected by IBGE under the responsibility of the users themselves and available in their place of work. The users consider as good the library's services, although it is believed they do not know very well its collection. The results indicate the need for reformulation of the libraryÂŽs dissemination policy concerning its users.Estudo das necessidades de informação de cientistas sociais do IBGE, no desempenho de suas atividades na ĂĄrea de informação para o planejamento, baseando-se nos dados obtidos em entrevistas individuais, estruturadas por questionĂĄrio, no qual empregou-se a tĂ©cnica do incidente crĂtico. As principais fontes de informação para esses tĂ©cnicos sĂŁo os dados estatĂsticos e os documentos a eles relacionados, alĂ©m dos livros e periĂłdicos, que tĂȘm corno lĂnguas mais importantes portuguĂȘs e inglĂȘs. A acessibilidade e o fluxo operacional sĂŁo os principais fatores que influem na utilização das fontes de informação. A biblioteca da instituição Ă© utilizada, atravĂ©s de intermediĂĄrios, quando hĂĄ necessidades de informaçÔes que nĂŁo sejam os dados estatĂsticos levantados pelo IBGE e sob a responsabilidade dos prĂłprios tĂ©cnicos, que estĂŁo disponĂveis nos seus locais de trabalho. Consideram bons os serviços da biblioteca, cujo acervo supĂ”e-se que nĂŁo conheçam bem. Os resultados do estudo indicam a necessidade de reformulação da polĂtica de disseminação da biblioteca junto a esses usuĂĄrios
Imidazoleâimidazolium picrate monohydrate
The asymmetric unit of the title compound, C3H5N2
+·C6H2N3O7
â·C3H4N2·H2O or H(C3H4N2)2
+·C6H2N3O7
â·H2O, contains a diimidazolium cationic unit, one picrate anion and one molÂecule of water. In the crystal, the components are connected by NâHâŻO, NâHâŻN and OâHâŻO hydrogen bonds, forming a two-dimensional network parallel to (001). In addition, weak interÂmolecular CâHâŻO hydrogen bonds lead to the formation of a three-dimensional network featuring R
5
5(19) rings
Advantages of Using a Block Unstructured Grid in a Casting Scenario
Numerical modeling of heat transfer during solidification has become widespread in the foundry industry. This is because it is possible to investigate the effects of adjustment to the casting variables on final casting quality, without having to do costly trial-and-error experiments. After selecting a suitable mathematical model, one has to choose an appropriate discretization method. If the grid is very fine, each type of method yields the same solution. However, some methods are more suitable to some classes of problems than others. The main objective of this paper is to demonstrate the advantages of using a block unstructured grid in combination with a generalized curvilinear formulation in a casting scenario and compare the performance of two discretization methods, finite differences (FD) and finite volume (FV). The validation of the numerical procedure is done by comparison with measurements which experimental set up is also described. A very good agreement of both numerical methods were verified with a slightly advantage for the finite volume method. Block unstructured grids works well with both discretization methods, allows obtain any physical feature in specific positions of the domain and is suitable for parallel computation; in combination with a generalized curvilinear formulation allows avoid geometric complexities and the development of more efficient algorithms.
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