Strain Rate
Mostrando 13-24 de 2987 artigos, teses e dissertações.
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13. Austenitic Grain Size Prediction in Hot Forging of a 20MnCr5 Steel by Numerical Simulation Using the JMAK Model for Industrial Applications
Yield strength and toughness in steels are directly associated with hot forging processes, especially by controlling austenitic grain size and cooling conditions. The phenomenological JMAK model in macroscale has been applied in different material classes to predict grain size after hot forming. However, on an industrial application, there is still a lack of
Mat. Res.. Publicado em: 05/12/2019
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14. Hardening and Dynamic Recovery During Hot Compression Test of Copper Simulated as Viscoplastic Material
The Norton-Bailey equation was used to simulate by finite elements the hardening and dynamic recovery of copper during the hot compression tests. The constants of Norton-Bailey equation were determined from the Voce-Kocks model. The simulation assumes a Mortar Contact with Coulomb friction and axial symmetry. Numerical results were compared with experiments.
Mat. Res.. Publicado em: 05/12/2019
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15. Serological response against bovine herpesvirus and bovine viral diarrhea virus induced by commercial vaccines in Holstein heifers
RESUMO: A vacinação é utilizada como estratégia para a prevenção e controle das doenças reprodutivas, causadas pelos vírus da diarreia viral bovina (BVDV) e herpesvírus bovino tipo 1 (BoHV-1), entretanto, as diversas composições de vacinas comerciais devem ser avaliadas quanto a sua eficiência protetiva mediada por anticorpos (Acs). O objetivo de
Pesq. Vet. Bras.. Publicado em: 02/12/2019
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16. Factors Affecting Broiler Production: A Meta-Analysis
ABSTRACT The meta-analysis data were obtained from a survey of published articles over 15 years. The data were selected to classify the factors that impact broiler production and separated by influence aspects of animal production (thermal environment and other factors). The relevant data for each study were systematized, grouped and later tabulated and inse
Braz. J. Poult. Sci.. Publicado em: 25/11/2019
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17. Recrystallization Kinetics of Fe-3%Si after Deformation at High Strain Rate and High Temperature
Recrystallization kinetics of Fe-3%Si with initial grain size 296~839µm at the temperature range 1223~1423K, strain range from 0.51 to 0.92, strain rate range 5~80s−1 was studied by isothermal compression test using Gleeble-2000. The effect of strain, strain rate, initial grain size and annealing temperature on the recrystallization kinetics were discusse
Mat. Res.. Publicado em: 07/11/2019
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18. MORPHOLOGICAL, PRODUCTIVE, AND CHEMICAL TRAITS OF XARAÉS GRASS: NITROGEN TOPDRESSING VERSUS INOCULATION WITH DIAZOTROPHIC BACTERIA
Resumo A adubação nitrogenada em cobertura é imprescindível para a produção de forragem, mas o elevado custo dos fertilizantes estimula a busca por novas tecnologias, como o uso de bactérias diazotróficas, que podem fixar o nitrogênio atmosférico. Para avaliar o potencial dessa tecnologia em suprir a quantidade de nitrogênio requerida pelo capim-x
Ciênc. anim. bras.. Publicado em: 24/10/2019
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19. The Use of Two-Dimensional Strain Measured by Speckle Tracking in the Identification of Incipient Ventricular Dysfunction in HIV-Infected Patients on Antiretroviral Therapy, Untreated HIV Patients and Healthy Controls
Resumo Fundamento: A maior parte das alterações cardiovasculares dos pacientes infectados pelo vírus da imunodeficiência humana (HIV) tem sido associada ao dano miocárdico causado diretamente pelo vírus. Alguns casos, porém, podem estar associados a efeitos adversos da terapia antirretroviral (TARV). Novas técnicas de avaliação da função ventric
Arq. Bras. Cardiol.. Publicado em: 02/09/2019
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20. Effect of Galardin and its Solvents on the Microtensile Bond Strength of Different Adhesive Systems to Dentin
Abstract Objective: To evaluate the effect of a synthetic inhibitor of MMPs (Galardin) and its solvents [ethanol and dimethyl sulfoxide (DMSO)] on the microtensile bond strength (µTBS) of adhesive systems to dentin. Material and Methods: Sound human third molars (n=180) were randomly assigned into 5 based on solution type: DMSO; ethanol; Galardin + DMSO;
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 02/09/2019
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21. Kasugamycin on Leifsonia xyli subsp. xyli in the in vitro culture of sugarcane
RESUMO: Um dos maiores entraves para o crescimento da produção de cana-de-açúcar é a infecção por fitopatógenos, principalmente pela bactéria Leifsonia xyli subsp. xyli (Lxx), agente causal do raquitismo-da-soqueira, doença que mais causa perdas a cultura. Assim, este trabalho teve como objetivo, avaliar os efeitos do antimicrobiano casugamicina s
Cienc. Rural. Publicado em: 22/08/2019
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22. Global Longitudinal Strain Predicts Poor Functional Capacity in Patients with Systolic Heart Failure
Resumo Fundamento: O strain longitudinal global (SLG) é capaz de predizer a capacidade funcional dos pacientes com insuficiência cardíaca (IC) e fração de ejeção do ventrículo esquerdo (FEVE) preservada, e avaliar o prognóstico na IC com FEVE reduzida. Objetivo: Correlacionar o SLG com parâmetros do teste de exercício cardiopulmonar (TECP), e av
Arq. Bras. Cardiol.. Publicado em: 18/07/2019
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23. Double Identification of the Optimal Hot Deformation Parameter Windows for AlCu4SiMg Alloy
In order to achieve hot processing products with expected microstructures, the construction of corresponding relationships between micro-evolution mechanisms and hot processing parameters is essential. In this study, such corresponding relationships of as-cast AlCu4SiMg alloy were constructed by double evaluating processing maps and Zener-Holloman (Z) parame
Mat. Res.. Publicado em: 10/07/2019
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24. Effect of Processing Parameters on Hot Deformation Behaviour and Microstructural Evolution of PM Ti-5553 Alloy at a Moderate-high Strain Rate
Isothermal compression tests of Ti-5553 (Ti-5Al-5V-5Mo-3Cr) alloy, produced by a fast consolidation approach from blended elemental powder mixture, were performed on a Gleeble® 3800 thermal-physical simulator to investigate its hot deformation behaviour. The samples were compressed in a wide temperature range from 700 ºC to 1150 ºC and a moderate-high str
Mat. Res.. Publicado em: 10/06/2019