Volumetric Variation
Mostrando 13-24 de 49 artigos, teses e dissertações.
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13. Spatial Variability of Some Soil Physical Properties in Three Soils of Sao Paulo, Brazil.
Volumetric core samples and loose soil samples were collected at 1 m interval in 10 m long transects, on three major soil groups in São Paulo, Brazil. The soil cores were used for soil desorption curves and the bulk density, and the loose soil was used for particle size analysis. The parameters obtained from the soil water retention model, bulk density and
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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14. Experimental investigation of the liquid volumetric mass transfer coefficient for upward gas-liquid two-phase flow in rectangular microchannels
The gas-liquid two-phase mass transfer process in microchannels is complicated due to the special dynamical characteristics. In this work, a novel method was explored to measure the liquid side volumetric mass transfer coefficient kLa. Pressure transducers were utilized to measure the pressure variation of upward gas-liquid two-phase flow in three vertical r
Brazilian Journal of Chemical Engineering. Publicado em: 2010-12
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15. Estudo experimental e numérico do sistema de admissão de um motor de combustão interna / Experimental and numerical study of the intake system of an internal combustion engine
During the process of intake air in the internal combustion engine it has been noted that air flow is not ideal, i.e., the cylinder volume is not completely occupied concerning the variation of specific mass and the charge loss along the feed system. Consequently, the volumetric efficiency in the cylinder reaches low values of performance, affecting the engi
Publicado em: 2010
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16. Análise morfofuncional cardíaca com o uso da ecocardiografia tridimensional em tempo real em indivíduos submetidos à plastia valvar mitral pela técnica de duplo teflon / Cardiac morphologic and functional analysis using real time tridimensional echocardiography in individuals submitted to mitral valve repair by double teflon technique
INTRODUCTION: Mitral valve repair is the treatment of choice to correct mixomatous mitral insufficiency. Tridimensional echocardiography studies demonstrate that mitral repair using prosthetic ring implant modifies mitral valve annulus morphology and function, although the literature related to mitral valve annulus behavior after mitral repair without use of
Publicado em: 2010
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17. Mal-das-folhas da seringueira: dinâmica de inóculo do patógeno, progresso e danos, em três condições topográficas / South American leaf blight of rubber tree: dynamics of pathogen inoculum, progress and losses, in three topographical conditions
Brazil currently accounts for only 1.15% of the world production of natural rubber. A limiting factor on the rubber production in Brazil is the South American Leaf Blight (SALB), caused by Microcyclus ulei. Considering the lack on the knowledge on SALB, between June 2005 and December 2008 we studied the: i. dynamics of ascospores and conidia of the pathogen,
Publicado em: 2010
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18. Deposición transversal de líquido de las boquillas de doble abanico TTJ60-11004 y TTJ60-11002 en distintas condiciones operacionales
The objective of this work was evaluate the transversal spray deposition of double plain spurt nozzles TTJ60-11004 and TTJ60-11002 in different operational conditions. Was used five samples of each nozzle and considerate a unite one repetition. The spray deposition was evaluate on a table of evaluation distribution constructed in accordance with norm ISO 568
Planta Daninha. Publicado em: 2009-06
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19. Produção de celulases e xilanases por Penicillium echinulatum em processo submerso utilizando biorreatores com agitação mecânica e airlift de circulação interna
Cellulolytic enzymes have many uses, particularly in the food, textile, and paper industries. However, their major potential use is in the hydrolysis of cellulose a component of lignocellulosic residues for ethanol fuel production. Among the cellulase-producing microorganisms, mutants of the Trichoderma genus are the most studied and most widely used in the
Publicado em: 2009
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20. Desenvolvimento de procedimento analítico em fluxo com multicomutação para a determinação espectofotométrica de ácido úrico em urina / Development of a multicommuted flow-based analytical procedure for the spectrophotometric determination of uric acid in urine
Mechanization of analytical procedures in clinical analysis brings advantages such as minimization of systematic errors and analysis time. Multicommuted flow systems attain the requirements to mechanization of analytical procedures in a versatile and robust way, minimizing reagent consumption and waste generation, due to the low solution volumes handled by e
Publicado em: 2009
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21. Análise contínua de medidas de cateter de artéria pulmonar volumétrico, ecotransesofágico, variações da pressão arterial sistêmica e marcadores de hipoperfusão tissular no choque hemorrágico em suínos / Continuous analyses of pulmonary, volumetric artery catheter parameters, transesophageal echocardiography, pressure pulse variation, and biomarkers of tissue hypoperfusion during hemorrhagic shock in swine. Experimental study in swines
INTRODUÇÃO: Diferentes parâmetros hemodinâmicos, incluindo os indicadores estáticos de pré-carga cardíaca como o índice de volume diastólico final ventrículo direito (IVDFVD) e parâmetros dinâmicos como a variação de pressão de pulso (VPP) têm sido usados na tomada de decisão para considerar o processo da expansão volêmica em pacientes em
Publicado em: 2009
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22. BEHAVIOR OF THE VARIABLES HYDROLOGICAL SOIL WATER BALANCE IN DRAINAGE LYSIMETERS / COMPORTAMENTO DAS VARIÁVEIS HIDROLÓGICAS DO BALANÇO HÍDRICO DO SOLO EM LISÍMETROS DE DRENAGEM
The purpose of this study is the monitoring of the behaviour of variables involved in determining the hydrological water balance by means of lysimeters installed in a small basin in the central depression of Rio Grande do Sul. The controlled variables were the precipitation, the runoff, the infiltration and storage of water in the soil. This work also presen
Publicado em: 2009
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23. AplicaÃÃo da estatÃstica para descrever o comportamento de um solo expansivo
Esta tese apresenta estudos realizados em uma Ãrea do municÃpio de Paulista, litoral norte do estado de Pernambuco. A maior parte dos solos à proveniente da aÃÃo do intemperismo sobre o calcÃrio margoso da FormaÃÃo Maria Farinha. Os estudos estÃo relacionados à variaÃÃo volumÃtrica e de umidade de uma argila expansiva nÃo saturada para trÃs co
Publicado em: 2009
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24. Conidia aerobiology and cercosporiosis management of soybean (Glycine max) / Aerobiologia de conídios e manejo das cercosporioses da soja (Glycine max)
The cercospora leaf blight and the frogeye leaf spot are two important diseases of soybean culture. Due to the high variability of both pathogens, the search for new sources of resistance and for efficient control methods is necessary. Therefore, this work, divided into five chapters, had as general objectives: (a) the evaluation of soybean genotypes reactio
Publicado em: 2009