Properties Of Compactness
Mostrando 1-12 de 16 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. 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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3. Functional Characteristics Improvement of Metal Transformable-Volume Structures for Space Applications
ABSTRACT Under conditions of the influence of space environment factors, the thin-walled load-carrying transformable-volume structures are subjected to volumetric deformation and long-time exposure to external loads, close to maximum permissible design values. The required functional properties of transformable-volume structures are ensured on the basis of a
J. Aerosp. Technol. Manag.. Publicado em: 2016-03
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4. ESTUDO DAS PROPRIEDADES ELÉTRICAS DE COMPÓSITOS CARBONO-ARGILA OBTIDOS A PARTIR DA BORRA DE PETRÓLEO PELO MÉTODO DE QUATRO PONTAS / STUDY OF ELECTRICAL PROPERTIES OF CARBON-CLAY COMPOSITES OBTAINED FROM THE METHOD OIL SLUDGE FOUR TIPS
The petroleum industry produces significant amounts of residues in several of its processes, from the perforation of wells, production, storage, transport and refining, to the distribution of its derivatives. The wastewater generated in the oil extraction step is known as produced water and, when stored in flotation tanks, if generates a residue called oily
Publicado em: 2010
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5. Operadores integrais gerados por núcleos em multi-escalas / Integral operators generated by multi-scale kernels
We study Mercer like kernels, a very special class of positive definite kernels possessing the description given by many results labeled as Mercers Theorem. We explore some of their properties which are needed in the development of this work and construct their native space. In the second half of the work, we consider Mercer kernels defined by a multi-scale
Publicado em: 2009
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6. Existence and stability of solutions of type solitary waves in equation Korteweg-de Vries (KdV) / Existência e estabilidade de Soluções do tipo ondas solitárias para a equação Korteweg-de Vries (KdV)
In this paper we demonstrate a theorem of Well-Posedness Local and followed by Well-Posedness Global Equation Korteweg-de Vries in Sobolev spaces by making use of conservation laws of this equation, the properties of the group associated with it, and some estimates obtained by Kenig , Ponce and Vega in [6]. We also demonstrated the existence and stability of
Publicado em: 2009
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7. Um estudo do comportamento assintÃtico para equaÃÃes em diferenÃas com retardo infinito
Neste trabalho estudamos uma teoria assintÃtica para um sistema homogÃneo de equaÃÃes em diferenÃas funcionais. O enfoque à na existÃncia de soluÃÃes convergentes, comportamento assintÃtico e propriedades desta classe de soluÃÃes para perturbaÃÃes nÃo lineares do sistema homogÃneo. O problema à abordado via teoria das dicotomias. Especificam
Publicado em: 2009
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8. QUALIDADE FÍSICO-HÍDRICA DE UM ARGISSOLO SOB FLORESTA E PASTAGEM NO SUL DO BRASIL / PHYSICO-HYDRIC QUALITY OF A HAPLUDALF UNDER FOREST AND PASTURE IN SOUTH BRAZIL
Soil compaction is a problem in different production systems: agriculture, pasture and forest. In the agriculture soil compaction is well documented, while in the pasture and forest its study is scarce. The objective of this study was to evaluate the physical-hydric quality of an Alfisol under forest and pasture in South Brazil, and stabilish parameters and
Publicado em: 2008
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9. Activated sludge morphology characterization through an image analysis procedure
This work deals with the development of a digital image analysis procedure to characterize microbial flocs obtained in three different WWTP: a bench-scale Sequencing Batch Reactor (SBR) dealing with phenol and nitrogen biological removal, a municipal treatment unit (Ilha do Governador, Rio de Janeiro, Brazil) and an industrial wastewater treatment plant (Cib
Brazilian Journal of Chemical Engineering. Publicado em: 2006-09
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10. SOIL COMPACTION INFLUENCE ON SOIL PHYSICAL PROPERTIES AND ON CROP GROWTH AND YIELD / COMPACTAÇÃO DO SOLO E SUA INFLUÊNCIA NAS PROPRIEDADES FÍSICAS DO SOLO E CRESCIMENTO E RENDIMENTO DE CULTURAS
Sol compaction effects on soil and plants has been subject of several studies. However, several parameters are used to evaluate soil compaction like bulk density and soil penetration resistance, but these parameters are dependent of soil type and moisture, therefore, the study of a parameter that could compare the different soils would facilitate the soil co
Publicado em: 2005
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11. Synthesis of Titania-Silica Materials by Sol-Gel
In this work TiO2-SiO2 glasses containing as much as 20 mol % of TiO2 were prepared via sol-gel process using titanium and silicon alkoxides, in the presence of chlorine, in the form of titanium tetrachloride or HCl. The gels were heat-treated until 800 °C. X-ray diffraction and Fourier transform infrared spectroscopy were used to understand the structural
Materials Research. Publicado em: 2002-10
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12. Aspectos especiais e temporais do problema do enovelamento protÃico
The manner in which a protein folds from a random coil into a unique native state in a relatively short time is one of the fundamental puzzles of molecular biophysics. It is well accepted that a unique native three-dimensional structure, characteristic of each protein and determined by the sequence of its amino-acids, dictates protein functions. In this Thes
Publicado em: 2002