Absorbed Fraction
Mostrando 1-12 de 86 artigos, teses e dissertações.
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1. A Comparative Study of the Heat Input During Laser Welding of Aeronautical Aluminum Alloy AA6013-T4
ABSTRACT The heat input is the amount of energy supplied per unit length of the welded workpiece. In this study, the effect of two different heat inputs in laser beam welding of a high strength aluminum alloy AA6013-T4 was evaluated from macrostructural and microstructural points of view. The experiments were performed using a continuous wave 2 kW Yb-fiber l
J. Aerosp. Technol. Manag.. Publicado em: 14/06/2018
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2. Mechanical Behavior of a Twip Steel (Twinning Induced Plasticity)
ABSTRACTA TWIP steel (0.65%C; 22%Mn; 0.28%Cr; 0.16%Si) was produced in the laboratory by melting, casting, hot forging and hot rolling. The relationship between mechanical twinning fraction and mechanical behavior of this steel was studied through tension tests at the following temperatures: 25, 300, 325, 350, 375 and 400°C. Fracture toughness was measured
Matéria (Rio J.). Publicado em: 2015-09
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3. Estimativa da excreção urinária de derivados de purinas a partir do consumo de NDT e determinação da contribuição endógena em bovinos de corte / Estimation of urinary excretion of purines derivatives from TDN intake and determination of the endogenous contribution in beef cattle
Two experiments were conducted with eight Nelore heifers (BW 267 17 kg ) to assess the excretion of purine derivatives (PD) from intake of TND, the intake and digestibilities of nutrients and the endogenous fraction of PD and nitrogen losses using the technique of fasting. In Exp.I the animal were fed a diet based on corn silage and concentrate in the propor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/03/2011
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4. Correlação in vitro in vivo para formas farmacêuticas sólidas de liberação modificada contendo diclofenaco de sódio / In vitro-in vivo correlation for sodium diclofenac modified release tablet formulations
The term in vitro-in vivo correlation (IVIVC) refers to the establishment of a rational relationship between the biological properties, or a parameter derived from a biological property produced by a dosage form, and a physicochemical characteristic or property of the same dosage form. The establishment of IVIVC enables the substitution of in vivo studies fo
Publicado em: 2009
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5. Fração endógena e recuperação urinária de derivados de purinas obtidas por diferentes métodos em bovinos nelore / Endogenous fraction and urinary recovery of purine derivatives obtained through different methods in Nelore cattle
Two experiments were executed utilizing eight Nelore heifers. The first experiment had the following objectives: aimed to evaluate the endogenous fraction at urinary excretion of purine derivatives (DP) in Nelore cattle fed single diet offering different levels of dry matter (MS); to establish the proportion of purines into abomasum recovered from urine and;
Publicado em: 2009
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6. Desenvolvimento de um modelo computacional para avaliaÃÃes dosimÃtricas em ratos
Rats are commonly used as experimental models in preclinical tests in Nuclear Medicine. Therefore, it is of great importance to accomplish precise absorbed dose estimates in these small animals, for explanation and control of potential radiation toxicity, observed during the tests. In this work, a tomographic model of an adult male Wistar rat was developed s
Publicado em: 2008
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7. Efeitos dos tratamentos termicos na microestrutura e propriedades mecanicas do aço superaustenitico ASTM A 744 Gr. CN3MN / Heat treatment effect in the microstructure and propierts of superaustenitic stainless steel ASTM A 744 Gr. CN3MN
ASTM A 744 Grade CN3MN super-austenitic stainless steel is employed in the manufacture of equipment working in severely corrosive environments under mechanical loads. In this work, an investigation was made of the influence of heat treatments on the microstructure and properties of this type of material. Solution heat treatments were carried out at temperatu
Publicado em: 2008
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8. Differential proteomics and physiological characterization of two clones of Coffea canephora under water deficit / Proteômica diferencial e caracterização fisiológica de dois clones de Coffea canephora sob déficit hídrico
Understanding the mechanisms by which plants respond to water stress is crucial to predict the climate change impacts on crop productivity and ecosystems. Plants have long- distance root-to-shoot signaling mechanisms that generate the orchestration of adaptive responses. Root system signaling, as well as shoot, is often considerate important in growth contro
Publicado em: 2008
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9. AVALIAÇÃO DA DISPONIBILIDADE DE FÓSFORO E RECOMENDAÇÃO DE ADUBAÇÃO FOSFATADA PARA CANA-PLANTA EM SOLOS DO ESTADO DE PERNAMBUCO / Evaluation of phosphorus availability and phosphate fertilizer recommendation for sugarcane in soils of Pernambuco State
Despite concerns with expected production, the phosphate fertilizer recommendation for Pernambuco lacks of the soil buffer capacity influence on P availability. Therefore, this work had as objective to 1) evaluate the maximum agronomic end economic influence of phosphate fertilizer in sugarcane, considering content and quality of clay fraction; 2) relate phy
Publicado em: 2008
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10. Algoritmo regional de monitoramento da taxa de fixação de carbono pelas florestas tropicais da América do Sul / Regional algorithm for monitoring the carbon assimilation by tropical forests of the South America
The most likely scenario for the next decades presents strong modifications in the global environment, including increase of the atmospheric concentration of CO2 and other trace gases, climate change and intensification of the impacts caused by the man s action. These changes may cause important modifications in the composition, structure and distribution of
Publicado em: 2008
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11. Síntese de bisporfirinas contendo o espaçador 2,2-bipiridina: modelos na elaboração de sensores luminescentes de íons metálicos / Synthesis of bisporphyrins held together by the 2,2-bipyridine spacer: models in the elaboration of luminescent sensors for metal ions
In this work have been synthesized bisporphyrins held together by means of amide linkage at the 4,4position of 2,2-bipyridine, reacting the mono-functionalised aminophenyl-porphyrin (NH2PTriPP) and 4,4-diacid chloride bipyridine (DACBipy). A preliminary study was conducted for the establishment of the reaction conditions for the attainment of mono(nitropheny
Publicado em: 2008
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12. Suplemental sources of selenium for adult cats / Fontes suplementares de selÃnio para gatos adultos
With the objective to evaluate different seleniumâs sources, It was made an experiment at University of Lavras (Animal Science Department) with 25 cats (adults, males, females, without a definite race, with medium weight of 3,58 Â 0,54 Kg). The evaluated variables were daily consumption of ration and selenium, fecal and urinary excretions of selenium, plas
Publicado em: 2007