Failure Mechanisms
Mostrando 1-12 de 504 artigos, teses e dissertações.
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1. Dificuldades no ensino e na aprendizagem de química orgânica do ensino superior - estudo de caso em duas Universidades Federais
This research investigates difficulties associated to the curricular component Organic Chemistry I based on a study case of Chemistry undergraduate courses (Bachelor and Teachers education) in two Federal Universities in the Brazilian South region. The analytical process integrated official documents of the courses (pedagogic projects, students’ grades), q
Quím. Nova. Publicado em: 2021-06
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2. SEED METERING MECHANISMS AND TRACTOR-SEEDER FORWARD SPEED ON CORN AGRONOMIC COMPONENTS
ABSTRACT Seed metering system and tractor-seeder forward speed are factors that affect sowing. Therefore, this study aimed to evaluate sowing and agronomic components of corn as a function of seed metering mechanism and tractor-seeder forward speed, in addition to evaluating the yield data obtained from a harvester with a yield monitor. The soil of the area
Eng. Agríc.. Publicado em: 2020-02
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3. BIOLOGICAL ENHANCEMENTS FOR ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION
RESUMO O ligamento cruzado anterior (LCA) é um dos principais responsáveis pela estabilidade do joelho. Sua lesão gera importante prejuízo nas atividades diárias, causando dor e disfunção, com elevado custo socioeconômico. A reconstrução ligamentar é o tratamento padrão atual e, embora com bons resultados, ainda apresenta significativo índice de
Acta ortop. bras.. Publicado em: 04/11/2019
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4. Examining the impacts of 12 weeks of low to moderate-intensity aerobic exercise on depression status in patients with systolic congestive heart failure - A randomized controlled study
OBJECTIVES: Psychiatric depression disorder is common in patients with systolic congestive heart failure (HF), and both conditions share underlying pathophysiological mechanisms. The incidence rate of depression disorder has clearly increased with the increase in HF manifestations in recent decades. Depression disorder is considered an independent predispos
Clinics. Publicado em: 26/09/2019
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5. Protective effects of salidroside on chronic heart failure in rats and the underlying mechanisms
The present study aimed to investigate the protective effects of salidroside on chronic heart failure (CHF) in rats and to explore the underlying mechanisms. One hundred SD rats were randomly divided into sham-operated, model, and low-, medium- and high-dose salidroside groups. The CHF model was established in later 4 groups. The later 3 groups were intragas
Braz. J. Pharm. Sci.. Publicado em: 12/08/2019
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6. Multi-scale representation of plastic deformation in fiber-reinforced materials: application to reinforced concrete
Abstract Here we present a multi-scale model to carry out the computation of brittle composite materials reinforced with fibers, and we show its application to standard reinforced concrete. The computation is carried out within an operator-split framework on the macro-scale, which allows for different failure mechanisms to develop in separate phases, as both
Lat. Am. j. solids struct.. Publicado em: 12/08/2019
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7. CD4+CD69+ T cells and CD4+CD25+FoxP3+ Treg cells imbalance in peripheral blood, spleen and peritoneal lavage from pristane-induced systemic lupus erythematosus (SLE) mice
Abstract Background: Adaptive immune cells, including CD4+CD69+ and CD4+CD25+FoxP3+ regulatory T (Treg) cells, are important for maintaining immunological tolerance. In human systemic lupus erythematosus (SLE), CD4+CD25+FoxP3+ Treg cells are reduced, whereas CD69 expression is increased, resulting in a homeostatic immune imbalance that may intensify autorea
Adv. rheumatol.. Publicado em: 05/08/2019
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8. Typological analysis of slidequakes emitted from landslides: experiments on an expander body pile and Sobradinho landslide (Brasilia, Brazil)
Abstract Reactivation of a landslide is usually accompanied by microseismic signals emitted from the deforming soil mass. The reproduction of similar signals in a physical model test conducted under control conditions can allow researchers to explore and test such complicated signals to improve the prediction of full-scale failure. The present study investig
REM, Int. Eng. J.. Publicado em: 19/06/2019
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9. Comparative analysis of the histopathological and epidemiological profile of ductal and lobular breast carcinomas diagnosed at the Hospital de Clínicas da Universidade Federal do Paraná during the period 2008-2013
RESUMO Introdução: O câncer da mama éa segunda causa de morte por câncer entre as mulheres em todo o mundo, e estuáis epidemiológicos podem auxiliar no entendimento dos seus mecanismos. Objetivos: Realizar um levantamento do número de casos dos carcinomas da mama diagnosticados em um período de seis anos. Método: Foi comparado com a literatura o
J. Bras. Patol. Med. Lab.. Publicado em: 09/05/2019
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10. Repercussions of inborn errors of immunity on growth
Resumo Objetivos: Revisão da literatura sobre as repercussões dos diferentes erros inatos da imunidade sobre o crescimento, chamar a atenção para o diagnóstico desse grupo de doenças em pacientes que apresentem desordens do crescimento, assim como permitir que se identifiquem as diferentes causas de alterações do crescimento em pacientes com erros i
J. Pediatr. (Rio J.). Publicado em: 18/04/2019
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11. Sepsis: evolving concepts and challenges
Sepsis remains a major cause of morbidity and mortality worldwide, with increased burden in low- and middle-resource settings. The role of the inflammatory response in the pathogenesis of the syndrome has supported the modern concept of sepsis. Nevertheless, a definition of sepsis and the criteria for its recognition is a continuous process, which reflects t
Braz J Med Biol Res. Publicado em: 15/04/2019
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12. Comunicação da morte: modos de pensar e agir de médicos em um hospital de emergência
Resumo Este estudo objetivou compreender como os médicos lidam com o processo de comunicar a morte aos familiares em um hospital de emergência. Trata-se de uma pesquisa qualitativa, embasada na antropologia interpretativa e médica. A coleta dos dados deu-se em um dos maiores hospitais públicos de emergência da América Latina, ao longo de nove meses de
Physis. Publicado em: 14/01/2019