Simulação numérica de fluxo de águas subterrâneas na bacia do Rio Grande (BA)

The Urucuia Aquifer System represents a strategic water source in western Bahia. Its baseflow is responsible for the flow rate of the main tributaries of São Francisco river left bank in the dry season, including the Rio Grande, its main tributary in Bahia state. This river has a hydrological regime heavily affected by groundwater and is located in a region with conflicts about water resources. The aquifers geology is constituted by neocretacious sandstones of Urucuia Group subdivided in Posse Formation and Serra das Araras Formation. The embasement is formed by neoproterozoic rocks of Bambuí Group. This work focuses on an important tool application, the mathematical model, whose function is represent approximately and suitably the reality so that can assist in different scenarios simulations and make predictions. Many studies developed in this basin provided the conceptual model basis including a full free aquifer, lithological and hydraulical homogeneity in entire basin, null flux at plateau borders and aquifer base. The finite element method is the numerical method used and FEFLOW the computational algorithm. The simulated area was discretized in a single layer with 27.357,6 km² (314.432 elements and 320.452 nodes) totaling a 4.249,89 km³ volume. Were utilized 21 observation wells from CERB to calibrate the model. The terrain topography was obtained by SRTM data and the impermeable base was generated by interpolation of descriptive profiles from wells and electric vertical drilling from previous studies. Works in this area obtained mean recharge rates varying approximately from 20% to 25% of average precipitation, thus the values of model recharge zones varying in this range. Were distributed 4 hydraulic conductivity zones: (K1) west zone with K=6x10-5 m/s; (K2) center-east zone with K=3x10-4 m/s; (K3) far east zone with K=5x10-4 m/s; e (K4) east-north zone with K=1x10-5 m/s. Thereby was incorporated to the final conceptual model...

Arranjo fisico na montagem com fluxo continuo nas superficies de comando composto

Based on the fierce competitiveness of manufacturing companies and the planning problems arising from the lack of flexibility and forecasting demand, companies are increasingly looking to reflect on the most appropriate methods to manage its manufacture. Today it is possible to obtain higher gains and lower costs through very efficient tools, this paper uses action-research to model and implement the physical layout of a manufacturing cell, with strong theoretical basement returned to Lean Production System and acting systematically in flexibility in mounting. Through observation and joint action of the observer and staff can report problems that occurred during the phases of planning and implementation of improvements. With the improvement of the physical arrangement in the assembly was possible to obtain significant gains by reducing the production cycle, the manpower required, spending of non-compliance and increasing productivity, final product quality and health in the workplace

Desenvolvimento de kit para quantificação enzimática de etanol

A dosagem do etanol durante a produção de medicamentos, bebidas e combustíveis tem se mostrado bastante importante para o aumento de rendimento dos processos e qualidade dos produtos. Embora existam vários métodos para determinar a concentração do etanol, os enzimáticos são os mais interessantes por serem rápidos, precisos, de fácil manuseio e baixo custo. O objetivo geral desse trabalho foi a elaboração de um Kit de quantificação enzimática de etanol, utilizando a enzima álcool desidrogenase I recombinante de S. cerevisiae (Adh1). Para isso, o gene codificador da enzima álcool desidrogenase I (ADH1) de levedura foi clonado no vetor pET28a para expressão em E. coli (BL21). Em seguida, a produção e solubilidade da enzima álcool desidrogenase I foi determinada, sendo definida uma condição ideal de produção e purificação da proteína recombinante por cromatografia de afinidade. A atividade enzimática da álcool desidrogenase I purificada foi determinada através de ensaios já padronizados na literatura (UV), bem como sua estabilidade em diversas condições de tempo e temperatura. Os resultados obtidos aqui demonstraram que a enzima obtida apresentou boa atividade biológica in vitro, com sensibilidade na detecção de no mínimo 2,3 x 10–4 g/L de etanol em 2 minutos. Além disso, a proteína purificada teve sua atividade preservada quando estocada a - 20°C durante 120 dias, características que possibilitarão que a enzima álcool desidrogenase I recombinante, purificada pela metodologia apresentada nesse trabalho, seja utilizada em um kit de quantificação enzimática de etanol rápido, preciso e de baixo custo

Aplicabilidade da metodologia de citometria de fluxo

Não disponível

Simulação numérica de fluxo de águas subterrâneas na fazenda Cara Preta - Santa Rita do Passa Quatro - SP

The term model refers to any representation of a real system. The use of models in Hydrogeology can be valuable predictive tools for management of groundwater resources. The numeric models of groundwater flow, object of this study, consist on a set of differential equations that describe the water flow in the porous medium. In this context, numeric simulations were made for a sub-basin located at Cara Preta farm – Santa Rita do Passa Quatro – SP. The aquifer at the local is composed by rocks of Pirambóia Formation, which is part of Guarani Aquifer System. It was developed a conceptual model from previous studies in the area, and from that, simulations were made through the software Visual Modflow®. The conceptual model established previously was considered consistent through the results of simulation.

Resolução de problema de valor no contorno associado ao projeto de reatores de fluxo disperso empregados no tratamento de efluentes

The objective of this work was to develop a numerical method to solve boundary value problems concerning to the use of dispersion model for describing the hydraulic behavior of chemical or biological reactors employed in the wastewater treatment. The numerical method was implemented in FORTRAN language generating a computational program which was applied to solve cases involving reaction kinetics of both integer and fractional orders. The developed method was able to solve the proposed problems evidencing to be a useful tool that provides more accurate design of wastewater treatment reactors

Avaliação da Hidrólise Ácida e Alcalina do Caroço de Abacate para a Produção de Etanol

New patterns from replaceable sources have been searched by scientific community to ethanol produce. The seed of avocado has thereabout 20% of starch. The starch hydrolysis results fermentable sugars by Saccharomyces cerevisiae, and the ethanol is the major product of fermentation. The starch can be hydrolysed by acids, basis and enzymes. Previous studies showed that enzymatic hydrolysis can produce 26,01 liter of ethanol per ton of seed. At the present work, we analyzed the chemistry hydrolysis efficiency before the enzymatic hydrolysis and the use of dormant seed consequence. The Brix rate variation at each stage was evaluated and the ethanol concentration was determined with gas chromatograph technique. The chemistry hydrolysis with subsequent enzymatic hydrolysis was effective, producing until 61,8 L.ton-1. The use of dormant seeds wasn’t significative to raise the Brix rate. The seed of avocado demonstrated to be an alternative replaceable source to ethanol produce

Efeito do estresse de privação social durante a adolescência sobre o comportamento de autoadministração de etanol em ratos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Etanol e comportamento sexual de risco

O aumento da incidência de Doenças Sexualmente Transmissíveis (DSTs) em alunos do ensino fundamental e médio está ocorrendo no mesmo período em que se dá o crescimento da prevalência de consumo de etanol nesta faixa etária. Alguns estudos têm demonstrado a relação entre o uso de etanol e comportamentos sexuais de risco na adolescência. O aumento do número de publicações das relações entre o uso de substâncias psicoativas e as DSTs revela a crescente preocupação dos pesquisadores da área de saúde mundial com esses dois problemas importantes. Essas questões atingem uma camada importante da população – os adolescentes – podendo interferir no desenvolvimento desses indivíduos que constituirão a população adulta e produtiva da sociedade no futuro. Há muitos trabalhos de conscientização contra o alcoolismo ou DSTs visando o público jovem, porém há poucos que correlacione os dois temas. Portanto, o presente trabalho se propôs a estudar a relação entre o consumo abusivo de etanol, como substância psicoativa, e o comportamento sexual de risco através do levantamento do perfil de estudantes do Ensino Médio em uma Escola Estadual da cidade de Botucatu, evidenciando a real importância de adoção de estratégias pedagógicas mais efetivas que trate dos temas em questão. O uso de etanol nessa população mostrou estar associado ao aumento no número de estudantes com vida sexual ativa, diminuição na idade de iniciação sexual, menor uso de preservativo e atos de arrependimento e violência. Conclui-se, assim, a necessidade da escola, enquanto espaço privilegiado da informação e saber, ater-se em programas que tratem dos temas em questão (drogas e sexualidade) oportunizando o diálogo e a reflexão

Gasolina, gás natural e etanol: comparação dos principais impactos ambientais da produção ao consumo final

Não disponível.

Influência do exercício resistido com restrição do fluxo sanguíneo sobre ativação muscular

Conventional resistance training (TRC) is capable to generate muscular responses according to provided stimuli, as, training volume and intensity. The TRC results in force gains in general. Studies aim this gain to neural adaptation initially, followed by hypertrophy gains. However, studies that used TRC associated to blood flow restriction (RFS) found rise in force and hypertrophy without necessarily detecting rise in neural activity. Therefore this review had as objective, bring up literature data that report this fact and yet, speculate possible elucidation about this responses inversion

Análise da proposta de melhoria do fluxo na área comercial central do municípo de Rio Claro-SP

The development of medium-sized cities in recent decade, caused, partly, by the industrial deconcentration process generated, beyond benefits, several problems for these cities population. The unplanned rapid growth of these cities, together with the capitalist model of production collaborated for the increase of socioeconomics questions in these locations. The urban mobility became one of these problems, embarrassing citizen’s lives, especially in downtown area. Therefore, the State began looking for solutions to improve urban mobility of the population, contributing to their quality of life and also to adapt the city to new market demand. In these work, we analyzed the situation of Brazilian medium-sized cities downtown area, as well as its growth process, tanking as an example the case of the city of Rio Claro – SP and it´s Public Administration proposal to improve the flow and urban mobility in a particular street in the town´s commercial centre

Aplicações do fluxo de Ricci à teoria da relatividade geral: estudo dos buracos negros

The flow of Ricci is an analytical tool, and a similar equation for heat geometry, a diffusive process which acts on a variety of metrics Riemannian and thus can be used in mathematics to understand the topology of varieties and also in the study geometric theories. Thus, the Ricci curvature plays an important role in the General Theory of Relativity, characterized as a geometric theory, which is the dominant term in the Einstein field equations. The present work has as main objectives to develop and apply Ricci flow techniques to general relativity, in this case, a three-dimensional asymptotically flat Riemannian metric as a set of initial data for Einstein equations and establish relations and comparisons between them.

Avaliação da fermentação aeróbia para produção de etanol a partir da xilose por linhagem de leveduras isoladas da casca de uva (Vitis spp)

Isolate microorganisms that fermenting xylose to ethanol is a challenge to expand production of biofuels from lignocellulosic materials. For this work was tested fermentation of xylose by yeast strains isolated from grape skins (Vitis spp) in order to ethanol produce. The yeasts were grown in submerged fermentation with xylose as a carbohydrate source. Aliquots were taken every 24 hours to measure cell growth, sugar consumption and ethanol production. The yeast had an production ethanol average of 2.5 g / L and yield (Ye / s) 0.12 g / g, showing that they have the ability to produce ethanol from xylose.