Análise das respostas de atributos sísmicos dos carbonatos barremiano, albiano e neógeno no campo de Bonito, bacia de Campos - RJ

The Bonito oil field, located on southwest of Campos Basin-RJ, has been explored since 1982. The main reservoir is composed by calcarenites of Quissamã Formation (Macaé Group) from Albian, but two other carbonate levels are present on the field, firsts is Coqueiros Formation (Aptian) and the second Siri Member (Oligo-Miocene). In this context and considering that carbonates reservoirs are a challenge for exploratory geoscientists, since the difficulty on recognize the effective reservoir distribution. This work aim to characterize the geophysical/geological facies based on seismic attributes responses, related to reservoir geometrical distribution, for the tree carbonates intervals on Bonito oil Field. A tree dimensional interpretation of the levels has been developed, based on well cross correlation and a 3D seismic interpretation, resulting on the stratigraphic and structural framework of the field, which showed a NE-SW fault trend controlling the Aptian carbonates reservoirs, and halocnetics structures showing a structural trap on Albian carbonates reservoirs. The definition of the structural/ stratigraphic framework possibly the seismic attributes calculations over the reservoir intervals. To select the best response in comparison with the reservoir distribution, obtained by seismic interpretation, the attributes response were compared with isopachs maps of each carbonate stratigraphic level. The attributes Maximum Amplitude, Maximum Magnitude and Rms Amplitude showed a good answer to reservoir distribution. The Rms Amplitude also showed a good correlation with physical rock properties, like RHOB bulk density, for the Albian and Aptian carbonates, as consequence it is possible make a characterization of reservoir distribution based on seismic attribute answer

Monitoramento hidrossedimentlógico da bacia hidrográfica do alto rio Sucuriú (MS) contribuinte da PCH Costa Rica

The growing demand for electricity in Brazil has stimulated the implementation of Small Hydro Power (PCH) in various regions of the country. However, the silting of reservoirs is a major problem faced by power plants and power plants. In this context, this study aimed to evaluate the data hydrosedimentological strategic points of the watershed of the Alto Rio Sucuriú (MS) to identify the possible causes siltation of the reservoir PCH Costa Rica and suggest mitigation measures. Hydrosedimentological surveys were conducted during the rainy season (February / March 2012) and drought (August 2012), and obtained data flow, discharge liquid, suspended solids and bottom and organic matter content. Based on these results it was determined that the points 2, 4, 7 and 9 are the largest contributors to sedimentation, and point 4 got most liquid discharge (38,20 m3s-1), point 7 largest discharge of solid suspension (906,3 mg L-1), points 2 and 4 major discharges solid totals (231,59 t dia-1 and 238,185 t dia-1 respectively) and point 9 higher organic matter content (22,18%) . Found greater fraction of fine sand and very fine suspended solids and solid medium sand in the background. As mitigation measures for the process of silting of the reservoir PCH Costa Rica (MS) highlights the orientation of landowners in adopting conservation measures and planting of leguminous species native to the region in symbiosis with nitrogen-fixing bacteria

Simulação de ciclo combinado utilizando software comercial

In Brazil, The power generation has always depended on the rivers, in other words, there are moments that the power generation can vary, which can cause variations in energy supply and even blackout according to the level of water in the reservoirs of the hydroelectric plants. For this reason, many options has been studied, like our example, which is about a combined cycle power plant in Canas. The use of combined cycle is interesting from the point o view of energy, because its efficiency is between 50 and 60%, and from the point of view of environment, because it can burn natural gas, which is cleaner than coal, it reduces the emission of gases that influence on the greenhouse effect. This work aims to perform a technical analysis of a case study of a power plant proposed to be built in Canas by the AES/AES Tietê Group. For the analysis will be used the commercial software GateCycle 6.0.0 from GE, this software has the power of simulating power generation cycles (nuclear, combined, etc.). The energy department of UNESP has the license, which makes possible the academic use of this tool. Two combined cycles were simulated, one using one pressure level HRSG, and another one closer to the real power plant, which is a combined cycle with a three pressure level HRSG. The results were close to expected, for the combined cycle with one pressure HRSG the power was 513,9 MW and a efficiency of 53,27%, in the case with the three pressure level HRSG the power was 517,1 MW and a efficiency of 53,5%. We conclude that the software requires that the user must have the knowledge about the subjects involved in the use of GateCycle in problems resolutions

Avaliação do potencial de sistemas nanoestruturados para administração cutânea de dexametasona

Os sistemas nanoestruturados são capazes de aumentar a permeação de um fármaco sem alterar as suas propriedades e direcioná-lo para regiões específicas favorecendo a interação com sistemas biológicos. Algumas formações dos sistemas nanoestruturados cristais líquidos, microemulsões podem permitir a liberação lenta do fármaco o que propicia um efeito mais prolongado da ação deste, aumento da solubilidade e estabilidade de fármacos, capacidade de agir como sistemas reservatórios, diminuição da toxicidade, bem como melhor a biodisponibilidade dos fármacos. A dexametasona (DMA) é um corticóide muito utilizado, mas que possui muitos efeitos colaterais,como eritema,hipertensão arterial,acne,aumento de peso e apetite,entre outros,devido sua capacidade de atravessar o estrato córneo por difusão, assim ele é capaz de alcançar a circulação e causar efeitos colaterais sistêmicos. Para diminuir a ação desses efeitos indesejáveis é preciso controlar a permeação desta classe de fármaco e aumentando a sua retenção cutânea. O objetivo deste trabalho foi avaliar o potencial de sistemas nanoestruturados estabilizados com álcool cetílico etoxilado e propoxilado(PRO) como tensoativo, ácido oléico (AO) ou óleo mineral (OM) como fases oleosas para a administração cutânea de DMA. Estas fases oleosas foram selecionadas por apresentarem características físico-químicas diferentes, bem como promoveram diferenças estruturais em formulações de estudos anteriores. A caracterização por microscopia de luz polarizada mostrou que a dexametasona pouco interfere na estruturação das formulações. A reologia mostrou que as formulações, com ácido oléico como fase oleosa, AO1 e AO2 são as formulações com melhores condições de aplicação cutânea. Os cristais líquido de fase cúbica, foram os que mais foram capazes de solubilizar DMA, além de apresentarem... (Resumo completo, clicar acesso eletrônico abaixo)

Variação do estoque de madeira morta em diferentes altitudes de floresta ombrófila densa atlântica

As florestas tropicais são naturalmente amplos reservatórios de carbono devido à alta produtividade e extensão (Malhi et al. 2000). Em termos do ciclo do carbono, o papel das florestas tropicais como fonte ou sumidouro de CO2 tem sido amplamente debatido (Saleska et al. 2003), portanto, estudos sobre a capacidade de estoque de carbono destes ecossistemas são particularmente relevantes para compreendermos a dinâmica do CO2 para o atual ciclo global do carbono e para compreender o potencial desses ecossistemas atuarem como sumidouro ou fontes de CO2. O objetivo do presente estudo foi verificar se a biomassa de madeira morta acima do solo varia com a altitude (5-50m e 50-500m) em uma Floresta Ombrófila Densa (Mata Atlântica) para entender como o estoque de carbono dessa necromassa varia entre os locais, estoque esse que é matéria prima para liberação de CO2 para atmosfera pelo processo de decomposição. Para estimar a necromassa em pé foram consideradas todas as árvores mortas em pé com diâmetro na altura do peito (DAP = 1,3 metros de altura) maior que 4,8 cm (ou PAP > ou igual a 15 cm), de acordo com protocolo proposto pelo RAINFOR (Rede Amazônica de Inventários Florestais). Todas as árvores mortas em pé foram quantificadas e classificadas a partir da verificação do estado de decomposição da casca de cada indivíduo em quatro classes de decomposição, que possuem diferentes densidades de madeira relacionadas ao estágio de decomposição. A biomassa de madeira morta acima do solo variou com a altitude (figura 2). Essa variação foi de 1,14 Mg ha-1 (parcela B, Terras Baixas) a 7,57 Mg ha-1 (parcela J, F.O.D. Submontana). Em relação às fitofisionomias, houve uma variação de 8,40 Mg ha-1 (Terras Baixas) a 18,38 Mg ha-1 (F.O.D. Submontana)

Análise de condicionantes geológico-geotécnicos para o rompimento de pequenas e médias barragens de terra: estudo de caso na bacia do rio Jaguari Mirim no município de São João da Boa Vista, SP

The act of containing water is one of the most practiced by the civilizations along history, in the will to increase the offer of water to many uses. The raise of environmental worries surround many human activities has given a big attention to dams. Indeed, the environmental consequences about dams are proporcional to their size, what gives to the big dams a more detailed Project and a bigger political concerning that increases the built, estability and maintenance of them. Then, the projects of medium and small dams are weak, limitaded to handbooks, textbooks and empirical recommendations, while the constructions of small dams are growing everytime more. With that being said, the present work intends to analise the geological and geotechnical conditionants that can cause break of small earth dams by making a case study in the Jaguari Mirim Watershed, located in the city of São João da Boa Vista (SP), and can be used to encourage the concern with small dams. In the area of study were identificaded, from satellite images, 248 dams. The map of physiographical compartmentalization defined by Pilachevsky (2013) was used to define the locations in the study área that would have bigger risk to the break of dams. Then, 9 of this dams were analised in field research, using references made by Cerri, Reis e Giordano (2011) and the risk of the analised dams were defined. A study about this type of structure is highly necessary to avoid big damages. An analysis of the geological and geotechnical conditionants that can cause break of dams guides the project in a way to avoid adverse consequences, especially when integrated with locacional conditions observed in the place of the dam’s building

Diretrizes para execução dos estudos geológico-geotécnicos e ambientais voltados à implantação de dutovias

Due to the new discoveries of oil and gas reservoirs, and also the increasing production of bio-fuels, the brazilian general pipeline system is being vertiginously extended. On the other hand, there is a lack of clear parameters that would allow a better utilization of the geological-geotechnical studies in the process of environmental licensing of pipeline systems. Therefore, this paper presents guidelines that would orientate the environmental licensing procedures to build pipeline systems, and also the geological-geotechnical studies that would support the characterization of the physical context. The method applied in this study consisted in the existing data survey and in their organization, analysis and review. In doing so, there is a well-subsidy integration of the many steps of the pipeline system implementation, the required environmental licenses and the investigation methods of the correlated physical context. As a result, it’s presented a flowchart of the guidelines, detailing the interaction between the environmental licensing, the geological-geotechnical studies and the phases of the pipeline’s project.

Análises isoenzimáticas, moleculares e ultraestruturais em camarões dulcícolas do gênero Macrobrachium

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avaliação dos aspectos da dieta alimentar de Pimelodus maculatus em dois importantes tributários do reservatório de Jurumirim, Alto Rio Paranapanema-SP

The species Pimelodus maculatus is one of the most abundant fish in many artificial reservoirs. Shows feeding plasticity and exploits all trophic levels in aquatic ecosystems. This study aimed to analyze and compare aspects of the diet of P. maculatus in two important tributaries (Taquari and Veados rivers) in the upper Paranapanema River system, and also investigate possible differences in the condition factor using its feeding habit as reference. Samplings were carried out every three months during 2011 and 2012 in two tributaries of Jurumirim's dam. After biometric analysis, fish were dissected to remove the stomachs that were fixed in formaldehyde 10% and conserved in alcohol 70%. The stomach content was analyzed under stereomicroscope and the food items were identified until the least possible taxonomic level. The diet was characterized based on the Alimentary Index (IAi). Feeding strategy and aspects of species autoecology were evaluated by the relation between abundance of prey-specific (Pi) and occurrence frequency (Fo) of the prey, and also was calculated the niche width of Levin (B). The condition factor was also established and values obtained in samples of both rivers were compared, correlating them with diet of the species

Análise dos métodos de cálculo de golpe de ariete em tubulações

This work studies the most commonly used methods and make comparisons and discussions of the findings made by each of them and the results provided by them. The objective of this research was to show that the method of characteristics is currently the most efficient method to perform these simulations because of its broad scope low simplifications, requirement allowing to consider every detail of the pipe and fluid. Manual calculations are performed and also a software capable of calculating this phenomenon for various situations, such as water pump, elevated tanks, valves and quick maneuver was developed. The software is based on the method of characteristics that is currently recommended by ABNT. These methods, and the results are obtained numerically and graphically are adopted pipes and amount of downstream conditions and in which will be applied. The conclusions reached showed that the Allievi method is widely used yet because of its efficiency and quick calculation for simple pipes. The method of characteristics, although a lot of work to be calculated due to the calculation is iterative process and requires a program to use it, is the only one that allows the calculation with all amount to the conditions situations and downstream of all the pipe possibilities found

Interferência das construções sucessivas de Pequenas Centrais Hidroelétricas (PCH), sobre a ictiofauna do rio Sapucaí-Mirim-SP, Brasil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Variação espacial do grau de trofia e da biomassa fitoplanctônica no reservatório de Itupararanga (São Paulo, Brasil)

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

Análise molecular de estirpes de Escherichia coli enteropatogênica (EPEC) isoladas de animais e humanos

Pós-graduação em Microbiologia Agropecuária - FCAV

Coquinas eoaptianas do sudoeste da Bacia de Campos: fácies deposicionais, eventos diagenéticos e fatores controladores da qualdade do reservatório

Pós-graduação em Geologia Regional - IGCE

Conhecimento de diferentes populações sobre as leishmanioses

As leishmanioses são enfermidades infecciosas que costumam afetar populações de países de clima tropical e subtropical, em sua maioria subdesenvolvidos, uma vez que seus principais vetores necessitam de condições ambientais e climáticas adequadas facilmente encontradas nessas regiões, para se proliferar. Há diferentes formas clínicas que se caracterizam por sua evolução crônica, sendo a forma visceral (LV) uma das mais graves. Neste caso, a disseminação é relativamente rápida uma vez que existe também a abundância de um dos seus principais reservatórios domésticos, o cão, que vive bem próximo ao homem, o qual é também acometido por esta zoonose. Dessa maneira é preciso que as populações, principalmente aquelas localizadas em áreas endêmicas, saibam identificar os pontos principais dessa doença como a transmissão, sinais clínicos e prevenção. Por esse motivo, essa revisão sistemática objetivou procurar saber qual o conhecimento de diferentes populações sobre as leishmanioses. Foram utilizados os seguintes descritores: (knowledge) AND (population) AND (leishmaniasis), através de um levantamento bibliográfico em três bases de dados, LILACS, SCIELO e PUBMED. Foi possível concluir, através da análise de sete artigos, que o conhecimento das leishmanioses ainda se encontra muito superficial dentro das populações e que a principal fonte de informação ainda é a informal, de pessoa a pessoa