Cyclic Movement
Mostrando 1-12 de 56 artigos, teses e dissertações.
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1. Evidence of vertical migration in the Ipanema bat Pygoderma bilabiatum (Chiroptera: Phyllostomidae: Stenodermatinae)
Migration is defined as a seasonal and cyclic population movement observed in all animal classes and studied mainly in vertebrates. A considerable part of the knowledge on migration comes from birds, for which migration is an important aspect of their biology. In the case of bats, females usually migrate larger distances than males in some species. The prese
Zoologia (Curitiba). Publicado em: 2011-12
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2. Multiaxial fatigue applied to evaluation of crankshafts s life / Fadiga multiaxial aplicada à avaliação da vida de virabrequins
O virabrequim é um dos principais componentes do motor de combustão interna e sua função é, em conjunto com a biela, transformar o movimento de translação do pistão em movimento de rotação. Como sofrem carregamentos cíclicos durante toda sua vida útil, o principal tipo de falha de um virabrequim é por fadiga. Porém, por estarem sujeitos a carre
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/07/2010
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3. Reflexão sobre a Matemática e seu processo de Ensino-aprendizagem: implicações na (re)elaboração de concepções e Prática de Professores.
This study aims to go deeper into the understanding of how important reflection is for the development of the teachers practice. The produced surveys concerning this perspective the epistemology of the practice have realized that the exercise of reflection/reflective practice presents an outstanding role in the initial and continuous formation and as regards
Publicado em: 2009
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4. Delta sleep instability in children with chronic arthritis
The objective of the present study was to evaluate the expression of a cyclic alternating pattern (CAP) in slow wave sleep (SWS) in children with the well-defined chronic syndrome juvenile idiopathic arthritis (JIA). Twelve patients (9-17 years of age), 7 girls, with JIA were compared to matched controls by age, pubertal stage and gender. After one night of
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-10
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5. Resistência à fadiga flexural dos sistemas rotatórios k3 e Endosequence em razão do uso / Resistance to flexural fatigue of K3 and Endosequence rotary systems in relation to the use
The aim of this work was to evaluate the cyclic fatigue resistance of two different nickel-titanium rotary systems, K3 (Sybron Endo, EUA) and Endosequence (Brasseler, EUA), based on the number of uses. All rotary files which were selected had their conicity of 0,04, 25mm of length and tip diameter of 25, following ISO standardization. To reach the purposes,
Publicado em: 2008
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6. Avaliação da recuperação da cartilagem articular do tornozelo de ratos após aplicação de um protocolo de alongamento cíclico da musculatura posterior da perna após imobilização
Objective: To evaluate the recovery of ankle articular cartilage of rats after applying unilateral cyclic passive muscle stretching protocol in previously hindlimb immobilization. Methods: fourty Wistar rats were divided in seven groups: C- control; I- immobilized ; RI- seven weeks recovery after immobilization; S- Stretched; RS- seven weeks recovery after s
Publicado em: 2008
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7. "Resistência à fadiga cíclica flexural de instrumentos rotatórios de Ni-Ti em razão do uso e do torque" / Flexural cyclic fatigue resistance of NiTi rotatory instruments due to number of users and torque.
The aim of the present study was to evaluate the flexural cyclic fatigue resistance of nickel-titanium rotary instruments, number 25, taper 0,04, and length of 25mm (K3, SybronEndo), when submitted to several torque values and number of uses in simulated canal blocks, by using devices appropriated for dynamic tests. It was tried to detect whether, in additio
Publicado em: 2007
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8. Development of machine of cyclic movements for biomechanical tests / Desenvolvimento de máquina de movimentos cíclicos para testes biomecânicos
O ser humano locomove-se utilizando-se do complexo sistema neuro-músculo-esquelético, o que lhe confere qualidade de vida. Partes do sistema esquelético são passíveis de tratamento ou mesmo de substituição pelo emprego de materiais estranhos ao corpo humano mas que provocam pequena reação biológica e necessitam ser dimensionados de modo a suportar
Publicado em: 2003
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9. Melhoramentos no algoritmo genético construtivo e novas aplicações em problemas de agrupamento / Constructivegeneticalgorithmimprovementsandnewclusteringproblemsapplications
Evolutionary Algorithms has been a research subject for decades and are based on evolving populations of possible solutions for a problem along generations. Genetic Algorithms belong to this group and many scientific works have registered their efficiency applied to combinatorial optimization problems. Recently, the Constructive Genetic Algorithm (CGA)has be
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/12/2000
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10. Melhoramentos no algoritmo genético construtivo e novas aplicações em problemas de agrupamento / Constructivegeneticalgorithmimprovementsandnewclusteringproblemsapplications
Evolutionary Algorithms has been a research subject for decades and are based on evolving populations of possible solutions for a problem along generations. Genetic Algorithms belong to this group and many scientific works have registered their efficiency applied to combinatorial optimization problems. Recently, the Constructive Genetic Algorithm (CGA)has be
Publicado em: 2000
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11. Effect of Pyridine Nucleotide Precursors on the Permeability of Toad Bladder in the Presence of Vasopressin, Adenosine 3′:5′-cyclic Monophosphate, and Theophylline*
The increase and prolongation of water movement in the toad bladder in the presence of the pyridine nucleotide precursors adenine and nicotinamide (when stimulated with vasopressin, adenosine 3′:5′-cyclic phosphate, or theophylline) suggests that pyridine nucleotides may be actively involved in membrane permeability.
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12. Mechanism of action of insulin on acetylcholine-evoked amylase secretion in the mouse pancreas.
The effects of insulin and acetylcholine (ACh) on amylase secretion, transmembrane movement of 45Ca2+ and K+, membrane potential and cyclic nucleotide levels in the isolated mouse pancreas were investigated. Insulin alone had no effect on either amylase secretion or 45Ca2+ fractional efflux but it markedly potentiated the ACh-evoked amylase secretion and sig