Moisture Transport
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. GROWTH AND PHOTOSYNTHETIC EFFICIENCY OF Atriplex nummularia UNDER DIFFERENT SOIL MOISTURE AND SALINE TAILINGS
RESUMO O descarte do rejeito dos dessanilizadores é um problema crescente sobretudo nas regiões semiáridas, sendo necessário o estudo de plantas halófitas como a Atriplex nummularia para o reuso dessas águas salinas. Dessa forma, objetivou-se avaliar o efeito da interação entre níveis de teor de água solo e de salinidade da água de irrigação, na
Rev. Caatinga. Publicado em: 18/07/2019
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2. Numerical solution of coupled mass and energy balances during osmotic microwave dehydration
The mass and energy transfer during osmotic microwave drying (OD-MWD) process was studied theoretically by modeling and numerical simulation. With the aim to describe the transport phenomena that occurs during the combined dehydration process, the mass and energy microscopic balances were solved. An osmotic-diffusional model was used for osmotic dehydration
Comput. Appl. Math.. Publicado em: 2012
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3. Produção de ferro-gusa e escória vanadífera a partir de rejeitos da Mineração Caraíba
This investigation addressed the recovery of magnetite and vanadium pentoxide disposed at Mineração Caraiba SA (MCSA) tailings pond via a route comprising magnetic separation and pirometallurgy aiming at achieving the products pig iron and vanadiferous slag. MCSA´s tailings pond extends at approximately 700 ha and holds 71 million tons of tailings contain
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/12/2010
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4. Modelagem Matemática da produção e transporte de biogás em aterros sanitários / Mathematical modeling of production and transportation of biogas in landfills
The processes that occur within the landfill for the production of methane are the methane generation through biodegradation, transport of methane through a porous medium and sorption of methane through reactions with other compounds present in the landfill, especially oxidation. This work aims to develop a computer model to estimate the biogas production ra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/03/2010
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5. ESTUDO DE TRAFEGABILIDADE APLICADO A VEÍCULOS DE RODA EM TRANSPORTE E TRAÇÃO / TRAFFICABILITY STUDY APPLIED TO WHEELED VEHICLES IN TRANSPORT AND TRACTION
The ability of vehicles to traverse soft soils is an important aspect of their performance. The geological, climate and topography diversity originated, in Rio Grande do Sul, extensive areas of hydromorphic clay soils, as example, Planssoils and Gleissoils. When saturated of water, these soft soils present low loads support, difficult agricultural machinery
Publicado em: 2010
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6. Analise da secagem de residuo de leite de soja "Okara" em secadores de leito de jorro e de cilindro rotativo assistido a microondas / Drying of soy milk residue in the spouted bed dryer and rotary cylindrical dryer assisted by microwaves
The use of industrial residues has become more and more important to avoid the environment contamination and to make use of resources considered wastes in the chemical and food industries. Actually, the approximated soy milk production in the world is unknown; however, it is known that large amounts of its residue, named "Okara", are generated by its product
Publicado em: 2009
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7. Caracterização física e dinâmica de episódios de chuvas intensas nas regiões sul e sudeste do Brasil / Physical and dynamical characteristics of heavy rainfall episodes in southern and southeastern Brazil
The heavy rainfall events occurred in Southern and Southeastern Brazil between 1960 and 2004 are investigated. It is observed positive trends in the annual frequency of these events in both regions in this period of 45 years. The trend in Southern Brazil is more significant. The atmospheric environments associated with these events also are investigated, but
Publicado em: 2009
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8. Desidratação osmotica e secagem convectiva de maçã : transferencia de massa e alterações de estrutura celular / Osmotic dehydrations and convective drying apple; : mass transfer and cellular structure changes
In this study it was investigated the osmotic dehydration of apples (Fuji variety) followed or not by convective drying with hot air. Concentration profiles were determined for water and solute(s) in samples of apples cut in half and osmotically dehydrated in binary aqueous solutions (30% and 50% sucrose, w/w) and ternary solution (50% sucrose and 10% sodium
Publicado em: 2009
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9. Microambiente térmico no transporte de frangos no verão e inverno e ocorrência de PSE (pale, soft, exudative) e análogo ao DFD (dark, firm, dry) em filés de peito (Pectoralis major)
The thermal microenvironment produced during transportation from farm to the commercial slaughterhouse might be the primary cause to influence the broilers welfare consequently the final meat quality with development of breast fillet PSE (Pale, Soft, Exudative) and DFD-like (Dark, Firm, Dry) meat. The objective of this work was to investigate in the 2008 win
Publicado em: 2009
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10. Analysis of heat and mass transfer during microwave drying of food products
Microwave (MW) drying is a rapid dehydration technique that can be applied to specific foods. Increasing concerns over product quality and production costs have motivated the researchers to investigate and the industry to adopt microwave drying technology. The advantages of microwave drying include the following: shorter drying time, improved product quality
Brazilian Journal of Chemical Engineering. Publicado em: 2008-09
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11. Development of A Darcy-flow model applied to simulate the drying of shrinking media
A mathematical model is developed to describe the coupling between heat, mass, and momentum transfers and is applied to simulate the drying of saturated and shrinking media. This model is called "the Darcy-flow model", which is based on the fact that the liquid flow is induced by a pressure gradient. The main novelties of the model are that firstly no phenom
Brazilian Journal of Chemical Engineering. Publicado em: 2008-09
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12. Difusão e sorção do isotiocianato alilo e o seu efeito no controle de Sitophilus zeamais e na qualidade do milho / Diffusion and sorption of allyl isothiocyanate and its effect on the control of Sitophilus zeamais and quality of maize
This study was done to evaluate allyl isothiocyante (AITC) transport through the grain bulk of maize, and determine its fumigant effect on different developmental phases of Sitophilus zeamais Motsch. (Coleoptera: Curculionidae) and on maize quality. The study was done in three steps at the Universidade Federal de Viçosa, in Viçosa, MG. In the first, the AI
Publicado em: 2008