Compressibility Effects
Mostrando 1-12 de 34 artigos, teses e dissertações.
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1. Compressibility and water availability in Albaqualf soils under different deployment times in no-tillage
ABSTRACT: The southern Brazilian lowlands have been historically used for flooded rice cultivation. Over time, heavy machinery and intensive tillage practices have resulted in soil structure disruption, soil compaction, higher production costs and lower agricultural profitability. This study aimed to evaluate the effect of different deployment times of no-ti
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-09
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2. Effects of granule particle size and lubricant concentration on tablet hardness containing large concentration of polymers
ABSTRACT The objective of this research work is to demonstrate the impact of granule size and lubricant concentration on the hardness of tablets in formulations containing higher concentration of polymers and to resolve the hardness issue during compression process. The work involves optimization of a milling process for size reduction of granules and blendi
Braz. J. Pharm. Sci.. Publicado em: 01/02/2018
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3. Soil Compressibility under Irrigated Perennial and Annual Crops in a Semi-Arid Environment
ABSTRACT In irrigated soils, a continuous state of high moisture reduces resistance of the soil to applied external forces, favouring compaction. The aim of this study was to evaluate the susceptibility to compaction of developed calcareous soils in irrigated annual and perennial cropping systems of the Apodi Plateau, located in the Brazilian semi-arid regio
Rev. Bras. Ciênc. Solo. Publicado em: 20/07/2017
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4. Hydro-Physical Properties of a Typic Hapludult under the Effect of Rice Husk Ash
ABSTRACT The combustion of rice husk generates a partially burnt mixture called rice husk ash (RHA) that can be used as a source of nutrients to crops and as a conditioner of soil physical properties. The objective of this study was to evaluate the effect of RHA levels on the hydro-physical properties of a Typic Hapludult. The experimental design was compose
Rev. Bras. Ciênc. Solo. Publicado em: 2016
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5. Análise de dados de testes de formação frente aos efeitos de maré / Analysis of well test data against tide effects
Efeito de maré é o nome dado a um fenômeno observado em dados de pressão registrados em acumulações de fluido, incluindo reservatórios de petróleo, e que tem origem na variação do potencial gravitacional a que as massas estão submetidas. As primeiras citações do efeito de maré observado em reservatórios de petróleo ocorreram em meados da déc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/02/2012
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6. Spray drying of Eugenia dysenterica extract: effects of in-process parameters on product quality
A 2³ full factorial design was used to assess the impact of spraying air flow rate (30-50 L/min), drying air inlet temperature (90-150 ºC) and extract feed rate (4-6 g/min) on the quality of Eugenia dysenterica DC., Myrtaceae, spray-dried extracts. Response surface methodology (RSM) was applied to analyze the significance of the effects of process factors
Rev. bras. farmacogn.. Publicado em: 18/09/2012
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7. Entropy variation in isothermal fluid flow considering real gas effects
Abstract The present paper concerns on the estimative of the pressure loss and entropy variation in an isothermal fluid flow, considering real gas effects. The 1D formulation is based on the isothermal compressibility module and on the thermal expansion coefficient in order to be applicable for both gas and liquid as pure substances. It is emphasized on the
J. Aerosp. Technol. Manag.. Publicado em: 2011-04
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8. Radiatively induced non linearity in the Walecka model
We evaluate the effective potential for the conventional linear Walecka non perturbatively up to one loop. This quantity is then renormalized with a prescription which allows finite vacuum contributions to the three as well as four 1PI Green's functions to survive. These terms, which are absent in the standard relativistic Hartree approximation, have a logar
Brazilian Journal of Physics. Publicado em: 2010-12
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9. Numerical investigation of the three-dimensional secondary instabilities in the time-developing compressible mixing layer
Mixing layers are present in very different types of physical situations such as atmospheric flows, aerodynamics and combustion. It is, therefore, a well researched subject, but there are aspects that require further studies. Here the instability of two-and three-dimensional perturbations in the compressible mixing layer was investigated by numerical simulat
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-06
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10. PARÂMETROS FÍSICO-HÍDRICOS DE UM LATOSSOLO SOB DIFERENTES SISTEMAS DE MANEJO E NÍVEIS DE TRÁFEGO / PHYSICOHYDRICAL SOIL PARAMETERS OF AN OXISOL UNDER DIFFERENT SOIL MANAGEMENTS AND TRAFFIC LEVELS
Soil quality has been widely studied since the soil is recognized as a key resource in agricultural production. Thus, it is necessary to assess a range of indicators of soil quality, in order to monitor parameters that indicate quality or soil degradation in agricultural activities. The objective was to assess indicators of physical and hydrical soil quality
Publicado em: 2008
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11. dynamic interaction dam-reservoir: analytical and numerical models / Interação dinâmica barragem-reservatório : modelos analíticos e numéricos
In the present work, the interaction problem between the dam structure and the fluid of the reservoir is studied in a dynamic analysis in the frequency domain. An analytical procedure through the variable separation technique is used to solve the mathematical models equations that represent the problem, resulting in analytical formulations for the field of h
Publicado em: 2007
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12. Análise de estabilidade linear de camada de mistura compressível binária / Linear stability analysis of a compressible binary mixing layer
Os sistemas aeroespaciais em sua maioria, se utilizam da liberação de energia química para funcionar. Dentre as aplicações mais comuns estão os motores de aeronaves (i.e. turbinas a gás) e motores foguete. Ambos precisam que o combustível seja misturado com um oxidante em uma camara de combustão para que reajam e formem gases, que serão expandidos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2006