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Mostrando ítems 451-460 de 1414
Efeito de 12 semanas de treinamento de força aquático nas capacidades funcionais de pessoas diagnosticadas com Esclerose Múltipla
(Universidade Federal de São Paulo (UNIFESP), 2020-08-04)
Multiple sclerosis (MS) is a chronic degenerative autoimmune disease, affecting the central nervous system, with the destruction of the myelin sheath and oligodendrocyte cells. Despite the benefits of aerobic training, one ...
Influencia de la soldadura semiautomática GTAW en la microestructura y propiedades mecánicas de juntas soldadas de aluminio A1200 - H14 usado en la industria carrocera
(Escuela Superior Politécnica de Chimborazo, 2020-03-10)
The following research work was performed with the main objective of determining the microstructure and mechanical properties of an aluminum welded under the semi-automatic GTAW process. This welding process can be applied ...
Influencia de la adición de fibras de polipropileno en concretos de alta resistencia en la evaluación de sus propiedades físico-mecánicas
(Universidad Michoacana de San Nicolás de Hidalgo, 2020-01)
At present, according to the Complementary Technical Standards of Concrete, high strength concrete is understood to be one that has a compressive strength f’c equal to or greater than 400 kg/cm2 (40 MPa). The ACI (American ...
PROPRIEDADES MECÂNICAS DE MADEIRAS AMAZÔNICAS ESTIMADAS POR MEIO DE MÉTODOS DE PROPAGAÇÃO DE ONDAS ULTRASSONORAS
(Universidade Federal de Mato Grosso, 2018)
Testicular hyperthermia reduces testosterone concentrations and alters gene expression in testes of Nelore bulls
(2020-08-01)
Increased testicular temperature reduces sperm motility, morphology and fertility. Our objectives were to characterize effects of testicular hyperthermia (scrotal insulation) on acute testosterone concentrations and gene ...
Characterization of simple magnetorheological fluids with potential application in engineering
(International Journal of Engineering and Innovative Technology, 2014-09)
In this work, the authors wonder if it is possible to easily create affordable and simple-made magnetorheological fluids with interesting properties in order to design speed control devices. The focus is on simplicity and ...
Time-frequency and time-scale analysis of Barkhausen noise signals
(PROFESSIONAL ENGINEERING PUBLISHING LTD, 2009)
Carrying out information about the microstructure and stress behaviour of ferromagnetic steels, magnetic Barkhausen noise (MBN) has been used as a basis for effective non-destructive testing methods, opening new areas in ...
Erosion-fatigue of steam turbine blades
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)
The premature failure of steam turbine rotor blades, manufactured in forged 12% Cr-NiMoV martensitic stainless steel, was investigated using visual inspection non-destructive testing, macro and microfractography, microstructural ...
Monitoring rocky reef biodiversity by underwater geo-referenced photoquadrats
(Society for Underwater Technology, 2021-06)
Digital images are an excellent tool for divers to sample hard-bottom subtidal habitats as bottom time is limited and high-definition images can be collected quickly and accurately. The present paper describes a sampling ...