Breakthrough Experiments
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Retention and Solute Transport Properties in Disturbed and Undisturbed Soil Samples
ABSTRACT Solute transport parameters can be determined in miscible displacement experiments, usually performed in columns with disturbed (sieved) soil samples. Experiments with undisturbed samples are uncommon, due to the difficulty of taking undisturbed samples at the size required for these experiments. Structural alteration of the disturbed material impli
Rev. Bras. Ciênc. Solo. Publicado em: 24/10/2016
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2. A forced running wheel system with a microcontroller that provides high-intensity exercise training in an animal ischemic stroke model
We developed a forced non-electric-shock running wheel (FNESRW) system that provides rats with high-intensity exercise training using automatic exercise training patterns that are controlled by a microcontroller. The proposed system successfully makes a breakthrough in the traditional motorized running wheel to allow rats to perform high-intensity training a
Braz J Med Biol Res. Publicado em: 15/08/2014
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3. Adsorção de corantes em turfa de origem Magalhânica / Absorption dyes om Magallanic peat
The aim of this work was to study the removal of dyes Naphthol Blue Black (NBB) and Maxilon Blue 5G (MB) in the aqueous phase by adsorption on Magellan peat. According to the peat physicochemical characterization, the carboxylic, phenolic, hydroxyl and methyl amines were identified as the main functional groups, that giving it a preferably negative charge an
Publicado em: 2011
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4. Modelo matemático multigrãos e multifásico para a previsão da solidificação equiaxial. / Multigrain and multiphase mathematical model for prediction of the equiaxed solidification.
Properties of components obtained by solidification processes depend strongly on the final grain structure. In the past few decades, there has been a significant breakthrough in the mathematical modeling of metallic alloy solidification to predict the grain macrostructure. Nevertheless, the so-called deterministic models are still not capable of modeling the
Publicado em: 2011
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5. Minimização de impactos nos recursos hídricos causados por sistemas de saneamento in situ: estudo piloto em Parelheiros - São Paulo (SP) / Minimization of septic systems impacts on groundwater resources. Pilot study in Parelheiros - São Paulo (SP)
O escopo principal desse projeto foi o de criar um conjunto de ações integradas que permitissem minimizar os impactos de sistemas de saneamento in situ nos recursos hídricos subterrâneo. Sendo as fossas sépticas, mesmo as bem construídas, pouco efetivas onde há alta densidade populacional, foi desenvolvido e aplicado no loteamento Jardim Santo Antôni
Publicado em: 2010
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6. Hybrid method of solution applied to simulation of pulse chromatography
In this communication, the method proposed by Cremasco et al. (2003) is applied to predict single and low concentration pulse chromatography. In previous work, a general rate model was presented to describe the breakthrough curve, where a hybrid solution was proposed for the linear adsorption. The liquid phase concentration inside the particle was found anal
Brazilian Journal of Chemical Engineering. Publicado em: 2009-06
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7. Cromatografia negativa em Sepharose-TREN como tecnica de purificação de proteinas adicionadas artificialmente a extrato de soja / Negative chromatography on Sepharose-TREN as a technique of proteins purification artificially added to soybean extract
In recent years, plants have been studied as bioreactors for the production of recombinant proteins with industrial and pharmaceutical interest. When compared to other expression systems, plants have several advantages, such as the possibility of posttranlationals modification, low production cost, low risk of contamination by human pathogens, and the accumu
Publicado em: 2009
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8. Dynamic isotherms of dye in activated carbon
Textile industrial wastewaters have significant quantities of dyes. Adsorption processes using industrials rejects may help in the treatment of these effluents. In this context, uptake of Reactive Blue 5G dye by babassu coconut shell activated carbon was studied with upstream flow fixed-bed experiments. First, the minimum flow rate that minimizes the diffusi
Materials Research. Publicado em: 2008-09
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9. Development and implantation of an operational setup designed for the evaluation of new tracers for oil reservoir characterization / Desenvolvimento e inplantação de um sistema operacional para a qualificação do desempenho de novos traçadores para reservatórios de petróleo
Petroleum, nowadays, is one of the most important natural resources in the world, since it is one of the main primary sources of energy and also raw material for many different products. It can be found accumulated in the subsoil, and was produced from the remaining portions of animals and vegetables, in a process that took millions of years to be concluded.
Publicado em: 2008
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10. Uso da tecnologia de troca iônica no tratamento de águas contaminadas com Nitrato do Aqüífero Dunas-Barreiras, Natal/RN-Brasil
The city of Natal comprises an area of about 170 km (65,63 squares miles). The Dunas-Barreiras Aquifer is the most important reservoir of the coastal basin of RN. It is being responsible for the water supplying of about 70% of the population, however, due to the sewage disposal system by cesspools and drains, it is presently affected in a great extent by nit
Publicado em: 2008
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11. Avaliação da remoção mono e multicomponente de Cu, Zn e Ni em argila bentonita nacional / Cu, Zn and Ni single and multicomponente study using Bentonite
Continuous technological development leads inevitably to residue generation. These grow in volume and toxicity as the increase of industrial processes complexity grow. Due to their high toxicity and non biodegradability, heavy metals specifically can, in extremely low concentrations, be harmful to human health and the environment under any type of exposure.
Publicado em: 2007
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12. Recuperação de acidos graxos livres em resina de troca ionica. / Recuperation of free fatty acids in ion exchange resins.
The drastic operational conditions used in the chemical or physical refining of edible oils can in some cases lead to losses of nutraceutical compounds, high losses of neutral oil or even to the darkening of the end product. Liquid-liquid extration can be used as an alternative refining process, since mild operation conditions are employed in this case. But
Publicado em: 2005