Air Distribution Uniformity
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Application of computational fluid dynamics on a study in swine facilities with mechanical ventilation system
ABSTRACT: Ventilation systems used in swine facilities deserve to be studied because they directly affect productivity in the pig farming sector. Bearing this in mind the uniformity of air distribution and temperature is essential to animal welfare in this breeding environment. Thus, the purpose of this study was to identify whether changes in air entrances
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-05
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2. Variabilidade espacial da uniformidade da lÃmina de Ãgua aplicada por sistemas fixos de irrigaÃÃo por aspersÃo / Spatial variability of water level uniformity applied by fixed sprinkler irrigation systems
Water application uniformity is an important factor to be considered in the evaluation of sprinkler irrigation systems. The uniformity depends on the type of sprinkler and its operational conditions, the display and space among the sprinklers on the field, and also the wind speed and direction during the water applying period. This work contributes to develo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/07/2012
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3. Programa computacional (PROIRRIGA) para avaliaÃÃo da uniformidade em irrigaÃÃo por gotejamento e sua validaÃÃo
The uniformity in trickle irrigation systems is affected by factors hydraulic, air, lack of maintenance and poor quality of irrigation water resulting in poor distribution of water, either excessive or insufficient, causing loss of productivity. Considering the increased use of automated drip irrigation on farms based on the Family Farm, this work establishe
Publicado em: 2009
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4. Technical parameters for the white mold control using air- assisted hydraulic sprayer / Parâmetros técnicos para o controle do mofo-branco na cultura do feijão utilizando pulverizador hidráulico de barra com assistência de ar
The white mold, caused by the fungus Sclerotinia sclerotiorum, is one of the most destructive diseases of the bean plant in the world, especially in crops under conditions of mild temperatures and high soil and air humidity. In general, primary infections caused by this fungus start due to the presence of free water and an exogenous energy source, usually se
Publicado em: 2009
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5. Análise sub-ppm de flúor em água pela técnica PIGE / SUB-PPM analysis of fluorine in water by the Pige technique
This work presents a new method for the analysis of fluorine in water, at the tenth of ppm concentration level, based on the PIGE (Particle-Induced Gamma-ray Emission) technique. It is shown that determination of concentrations of this order of magnitude by PIGE requires the use of a preconcentration method. Some attempts of preconcentration of fluorine by a
Publicado em: 2008
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6. Analise dos parametros relacionados ao resfriamento a ar forçado em embalagens para produtos horticolas
Esta pesquisa teve como objetivo desenvolver uma metodologia para o projeto dos orifícios de embalagens para frutas e hortaliças submetidas ao processo de resfriamento rápido a ar forçado. Tendo em vista as altas perdas registradas anualmente sobretudo devido à falta de embalagens adequadas e armazenagem frigorificada, tal metodologia poderá auxiliar d
Publicado em: 2004
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7. Medida de fração de vazio superficial num escoamento bifoisico gas-liquido pelatecnica de atenuação de raios gama
The evaluation of void fraction in gas liquid two-phase flow is essential for a through understanding of the fluid hydrodynamics associated tothe multiphase flow. Many void fraction measurement techniques have been developed, and those already known have been improved, so that the goal of measuring them faster and more acurately may be attained. The present
Publicado em: 1989
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8. Exercise-induced arterial hypoxaemia in healthy human subjects at sea level.
We determined the incidence of exercise-induced arterial hypoxaemia and its determinants in sixteen highly trained, healthy runners who were capable of achieving and sustaining very high metabolic rates (maximal O2 uptake = 72 +/- 2 ml kg-1 min-1 or 4.81 +/- 0.13 l min-1). Arterial blood gases and acid-base status were determined at each load of a progressiv