Water And Air Permeability
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Impacto do uso de resíduo de vermiculita no estado endurecido de argamassas
Resumo No processo de beneficiamento da vermiculita é gerado um resíduo fino para o qual atualmente ainda não foi desenvolvida uma aplicação que possibilite a utilização em larga escala. Uma alternativa que vem sendo estudada é a associação com cimento Portland em composições de argamassas e concretos, em função da composição química do res�
Cerâmica. Publicado em: 2019-01
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2. Transpiration Reduction Factor and Soybean Yield in Low Land Soil with Ridge and Chiseling
ABSTRACT Water and oxygen deficiencies in the soybean crop cultivated on lowland soils are an important topic of research. The objective of this study was to investigate changes in water and oxygen supply and soybean yield caused by soil management in lowland soils. A soybean crop was grown under four soil conditions: no-tillage (NT), chiseling (CH), ridge t
Rev. Bras. Ciênc. Solo. Publicado em: 24/05/2018
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3. Is Structural Quality as Assessed by the "Profil Cultural" Method Related to Quantitative Indicators of Soil Physical Quality?
ABSTRACT Soil and crop management systems change the soil structure, thereby affecting soil quality. The “profil cultural” method (PCM) has been used to identify the effects of management systems on soil structure; however, few studies relate the structures identified by the PCM to quantitative indicators of soil structural quality. This study aimed to q
Rev. Bras. Ciênc. Solo. Publicado em: 22/02/2018
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4. Wood Permeability in Eucalyptus grandis and Eucalyptus dunnii
ABSTRACT The objective of this study was to evaluate the flow of air and water in Eucalyptus grandis and Eucalyptus dunnii wood. Wood was collected from four trees aged 37 years in an experimental plantation of the Federal University of Lavras, Brazil. Planks were cut off the basal logs to produce specimens for air and water permeability testing. Results ind
Floresta Ambient.. Publicado em: 11/12/2017
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5. Liquid Bovine Biofertilizer and Cultivation Effects on the Porosity of a Typic Haplocambids as a Function of Cultivation and Dose
ABSTRACT The soil porous space is where processes related to gases and soil solution occur, and provides an adequate guide for agricultural practices. This study aimed to evaluate the integrated effects of cultivation and the application of liquid bovine biofertilizer on the porous network of a Typic Haplocambids (Cambissolo Háplico Ta Eutrófico) cultivate
Rev. Bras. Ciênc. Solo. Publicado em: 28/07/2016
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6. A study on the functional properties of silk and polyester / lyocell mixed fabric
ABSTRACT Silk is one of the valuable fibers in textile industry. It is used for delicate applications in many areas such as sarees, suitings, curtains and luxurious interiors. To diversify the properties and usages silk is mixed with polyester and lyocell. The fabric is dyed with natural dyes (kum kum, indigo, barberry) as well as synthetic dyes (reactive dy
Matéria (Rio J.). Publicado em: 2015-12
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7. An experimental simulation model for coated paper drying
Due to the lack of information regarding the phenomena of mass, heat, and momentum transfer in coated paper drying, substantial research work still needs to be done. A simulation model for coated paper drying is introduced which integrates heat and mass transfer mechanisms. In the model, the coated paper was assumed to have 3 layers (coated layer, wet and dr
Braz. J. Chem. Eng.. Publicado em: 2013-09
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8. Relation of transverse air permeability with physical properties in different compositions of sugarcane bagasse particleboards
Studies concerning the production of particleboards with sugarcane bagasse as an alternative fibrous material have been carried out as an attempt to provide a sustainable and viable destination for this residue. This work aimed to evaluate the influence of several processing variables related to the microstructure of sugarcane bagasse particleboards (mat typ
Mat. Res.. Publicado em: 22/11/2012
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9. ALTERAÇÕES FÍSICAS E QUÍMICAS DE UM CAMBISSOLO HÚMICO EM POVOAMENTOS DE Pinus taeda L. COM DIFERENTES ROTAÇÕES / PHYSICAL AND CHEMICAL CHANGES OF A Haplumbrept IN STANDS OF Pinus taeda L. WITH DIFFERENT ROTATIONS
Starting from the assumption that changes in land use can provide changes in physical and chemical properties, influencing its quality, the study aimed to verify whether the introduction of Pinus taeda L., on soil under native grassland conditions, can degrade physical and chemical quality of Haplumbrept soil in different rotations. The study was conducted i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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10. Permeability measuremens of brazilian Eucalyptus
The permeability of Brazilian Eucalyptus grandis and Eucalyptus citriodora wood was measured in a custom build gas analysis chamber in order to determine which species could be successfully treated with preservatives. Liquid permeability was tested using an emulsion of Neen oil and a control of distillated water. Air was used to test the gas phase permeabili
Materials Research. Publicado em: 2010-09
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11. Avaliação das propriedades de transporte de massa contendo adições minerais / Evaluation of the mass transport containing mineral admixtures
The durability of reinforced concrete structures is damaged by the degrading action of the penetration of substances in the form of gases, vapors and liquids through the pores and cracks. It is known that water both in its pure form or containing dissolved ions such as chloride, sulphate, carbon dioxide or oxygen ions, can compromise the durability of concre
Publicado em: 2009
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12. VARIABILIDADE ESPACIAL E ESTIMATIVA DA CONDUTIVIDADE HIDRÁULICA E CARACTERIZAÇÃO FÍSICO-HÍDRICA DE UMA MICROBACIA HIDROGRÁFICA RURAL / SPACIAL VARIABILITY AND ESTIMATIVE OF THE HYDRAULIC CONDUCTIVITY AND PHYSICAL-HIDRICS CHARACTERIZATION OF A RURAL WATERSHED
The soil management systems involve changes in soil physico-hydrical properties. The objective of this study was (i) characterize the soil physico-hydrical properties in the layer 0-5 cm for different soil management systems in the Cândido Brum watershed, (ii) build a map with the spatial variability of soil saturated hydraulic conductivity (Ks), (iii) esti
Publicado em: 2009