Mapeamento geológico-estrutural da Sequência Canto, porção sul do Greenstone Belt do Rio Itapirucu, Bahia

The study area is located in the southern portion of Rio Itapicuru Greenstone Belt, Bahia, where were found rocks that belongs to the Canto Sequence, that comprises felsics and intermediary rocks, beyond metasediments. The studied maps and drill holes help to recognized stratigraphy column that was divided in three mains domains, from the base to the top: andesitics to felsics lavas domain, carbonaceous and metasedimentary domains. The data obtained in mapping and petrography analysis allows classify the area in three deformational phases, Dn, Dn+1, Dn+2. The metamorphism recognized according to the mineralogical associations permitted to classify a progressive regional metamorphism (lower to medium greenchist facies) till biotite zone, falling until chlorite zone due to retrometamorphism. The auriferous mineralizations are mainly related to hydrothermal veins included in the different lithologies, mainly in carbonaceous schists

Modelo tectono-estrutural dos campos de petróleo Namorado, Cherne e Albacora

The main goal in this research is a tectono-estructural characterization of the Cherne, Albacora and Namorado Fields, located at Campos Basin, in order to investigate the relationship between the geologic evolution and the rock´s physical properties of the reservoir, and how they affect the hydrocarbon accumulation in those fields. Well correlations show that the inferior turbidites have a regional lateral continuity. Basic petrophysics analysis, calculated here, shows that the three fields present porosity values that range from 15 to 20%, shale volume range from 26 to 30% and formation water saturation range from 23 to 45%, based on formation water resistivity dada from Albacora Field. Petrophysics maps feature a trend in Albacora Field that increase the porosity values to SE, and in Cherne and Namorado Field the trend increase towards N. Seismic horizons where interpreted between the first appearance of the Namorado Sandstone and the top of Quissamã Formation. This interval presents normal listric faulting, in Cherne and Namorado Field with NWSE and NE-SW direction, and sedimentation trend to NW-SE, in Albacora Field the faulting presents a NNE-SSW and N-S direction, with a sedimentation trend to NE-SW. Seismic attribute maps present amplitude anomalies close to the producing wells, and on Namorado Field, it indicates a potential hydrocarbon accumulation in the NE region. For each field is indicated laboratory tests for a better characterization of the petrophysical properties, since that they don’t form the same reservoir level, therefore, not influencing the water saturation calculation

Caracterização estrutural do Lineamento de Piúma e sua influência na porção norte da Bacia de Campos

The detailed study of the Brazilian continental margin basins became possible with the advancement of geophysical tools, with emphasis on seismic reflection. Characterizing the structural and stratigraphic elements of Brazil’s marginal basins they realized that there was a relationship with structures present on the adjacent continental basement. So many works began to be made to understand this relationship and know the major factors that influenced the evolution of the continental margin. The study area of this work includes the northern portion of the Campos Basin and the continental outcropping adjacent areas, which corresponds to the northern of Rio de Janeiro state and the southern of Espirito Santo state. This area stands an important structural feature of NW-SE direction with a projection to the Campos Basin called Lineamento de Piúma. The outcropping basement rocks belongs to the Ribeira Belt which was bonded to other mobile bands forming the continent Western Gondwana during the Brasiliano Cycle, which later fragmented giving rise to the Atlantic Ocean. The opening of the ocean results on the formation of the marginal basins of Brazil. These basins have continental, transitional and marine facies. On Campos Basin the continental phase resulted on the formation of horsts and grabens bounded by synthetic and antithetic faults. Continuing rifting formed the saline lakes that deposited siliciclastic and carbonate sediments. The transitional phase resulted on thick packages consist of evaporites (halite and anhydrite) that was deposited in lagoon environment, tectonically quiet arid and semi-arid. The marine phase it deposited siliciclastic and carbonate in the Campos Basin resulting in shales, marls, limestones, ritmito, turbidites, sandstones and others. The objective of this study is to investigate the possible continuation... (Complete abstract click electronic access below)

Efeitos do antidepressivo cloridrato de fluoxetina na integridade histológica dos túbulos seminíferos de ratos adultos

A fluoxetina, pertencente à classe dos inibidores da recaptação seletiva de serotonina, é um dos antidepressivos mais amplamente prescritos para o tratamento da depressão e de transtornos da ansiedade, como o transtorno obsessivo compulsivo. Considerando que, dentre os efeitos colaterais causados pela fluoxetina, têm sido relatados distúrbios na função sexual masculina, foi proposto avaliar a ação deste fármaco sobre a integridade morfológica dos túbulos seminíferos. Foram utilizados 16 ratos adultos, distribuídos em 2 grupos: grupo fluoxetina (GF) e grupo controle (GC). Os animais do GF receberam injeções intraperitoneais de fluoxetina (20mg/Kg) e os animais do GC receberam água destilada. O tratamento se estendeu por 11 dias consecutivos e, ao final do tratamento, foram obtidos os pesos corpóreo e testicular dos animais. Os testículos foram fixados e processados para inclusão em historesina e parafina. Nos cortes de historesina, as frequências de túbulos de acordo com o estágio do ciclo do epitélio seminífero e de túbulos seminíferos contendo células descamadas preenchendo a luz tubular foram obtidas, bem como os seguintes parâmetros morfométricos: área tubular total, área da luz tubular e área do epitélio seminífero. Os cortes em parafina foram submetidos ao método do TUNEL para detecção de morte celular. Os níveis séricos de testosterona também foram avaliados. Os resultados foram submetidos à análise estatística para avaliação das diferenças entre os grupos. O tratamento com fluoxetina causou redução significante do peso corpóreo dos animais e redução, embora não significante, do peso testicular absoluto. Além disso, uma redução significante nos níveis séricos de testosterona foi observada nos animais do GF. Os túbulos seminíferos apresentaram contorno irregular, depleção celular e intensa desorganização epitelial, bem como a presença de vacúolos e ...

Caracterização geológica e estrutural da porção centro-norte do greenstone belt de Faina, Faina-GO

The area where the study was conducted is located in the central-western state of Goias. It geologically inserts the northern portion of the Greenstone Belt of Faina which belongs to the Archean terranes that fits in Brasília Fold Belt and Tocantins Structural Province. This region is known for its greenstone lode gold potential and it was heavily exploited by pioneers and prospectors, leaving many records for where they have been through. Preliminary work done by Orinoco Brasil Mineração in their required areas at the region showed that the environment is promising for gold mineralization and that the ore is controlled by structures. Therefore the objectives of this work were the geological and structural mapping in semi detail scale to improve geological, stratigraphic and structural controls present attributing possible ore understanding. With the development of the work there were recognized on the desktop three structural domains separated by a thrust fault. For each domain were discriminated the geological units ranging in gneisses, quartzites formed from coarse sediments arcoseanos, and schists. By mapping structures there were found five deformation phases, Dn-2, Dn-1, the Dn event that generated the main foliation (Sn) in high representation and two post-stages Dn with brittle late manifestations. The detail mapping of the Rattlesnake Gallery showed that the mineralized quartz vein is consistent with axial-plane foliation Sn-2 belonging to the oldest deformation Dn-2 phase and that the high grade is distributed in the hinge region folds of the same phase

Monitoramento de processos multivariados autocorrelacionados

Technological advances and the availability of computational resources have been facilitating the collection and processing of data. Thus, the natural tendency of the monitoring processes is the simultaneous control of various quality characteristics. In automated processes, observations are generally autocorrelated. Studies with univariate graph for processes have shown that the autocorrelation reduces the ability of this signal changes in the process. In this paper, we study the multivariate autocorrelated processes. Through simulations are obtained properties of graphs, monitoring the mean vector, the properties of graphs VMAX, in monitoring the covariance matrix, and the properties of graphs MCMAX, the simultaneous monitoring of mean vector and covariance matrix. Conclude that increasing the autocorrelation and the number of variables being monitored, reduces the power of the graphics in signal of a special cause

Uma análise sobre a polêmica entre sentido externo e sentido inetrno na formação do Brasil: a reflexão estrutural e as novas complexidades

Este trabalho tem o objetivo de analisar a polêmica gerada pela publicação de Arcaísmo como Projeto, de Fragoso e Florentino. Apoiados no mercado atlântico como inserção determinante da economia colonial, no papel estrutural do tráfico de escravos na África como nas colônias americanas, na expansão ultramarina portuguesa como projeto social para a manutenção do Antigo Regime, acabando por reproduzir hierarquia desigual e excludente na colônia e apropriando apenas o resultado final do excedente gerado, os autores afirmam que deste conjunto emergem as condições para um circuito interno de acumulação. Mercadores cariocas, a partir da transformação das formas de acumulação ao longo do século XVIII, preenchem os espaços mercantis internos e alçam-se à hegemonia socioeconômica local, apropriando-se de excedentes agroexportadores sem contudo levar estes à ruína, em função da elasticidade da oferta interna, desta forma reiterando a ordem social excludente da colônia, e criando quadros de monopólio para a elite mercantil. Esta proposta será descrita e criticamente apreciada no capítulo 2. Precedendo-a, apresentamos no primeiro capítulo uma leitura da explicação em “formação da estrutura subdesenvolvida brasileira”, em Furtado. Analisamos extensamente sua análise pautando-nos pelos elementos que entendemos serem centrais, a formação de capital e o nível de renda verificados a partir da produção exportadora em cada período colonial, e a possibilidade de desenvolvimento que permitem. A conclusão é uma síntese entre a reflexão estrutural(ista) de Furtado e o isolamento teórico de Fragoso e Florentino, apontando o papel que entendemos para estes no debate após as críticas a sua proposta, assim como propomos a importância das análises clássicas ao entendimento do resultado histórico brasileiro

Biodegradação de óleos derivados do petróleo e de origem vegetal estimulada por biossurfactantes em meio aquoso e monitoramento de sua toxicidade

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Aplicação de um sistema de monitoramento remoto para auxiliar na manutenção preditiva e preventiva de componentes de uma subestação

The increase in energy consumption in the world has caused the electrical systems becoming ever larger and more complex. Because of that becomes necessary to use special tools to efficiently manage the equipment present in these systems. Nowadays a tool very used is the remote monitoring of assets which works collecting signals using sensors processing these signals and make them available to the system user. So the user can use informations that may assist him efficiently in making decisions when doing a maintenance. The system is technically efficient since it improves the measurement process and enables the asset management of a substation by using advanced technology for that and economically viable especially in cases where the user is subject to monetary loss due an interruption of power supply

Monitoramento geofísico no aterro controlado do município de Cordeirópolis (SP)

The geophysical methods are widely applied in environmental characterization and monitoring studies. The resistivity method, in particular, has a wide area of applications, being effective in studies of solid waste landfills. The present work propose a geophysical monitoring in the Cordeirópolis city controlled landfill and analyze relationships between variation of electrical resistivity parameter, the residence time of the solid waste in landfill, the rainfall in the region and the organic matter biodegradation processes. The study has no monitoring system to control the products generated in the organic matter decomposition found in waste such as sealing blanket or leachate or gas drains. The results shows that the electrical resistivity parameter was effective in monitoring the landfill contamination plume

Caracterização estrutural da porção central da Bacia de Santos e seu embasamento continental adjacente, através de interpretação de imagens de satélites e geofísicas

The Santos Basin is located in the Brazilian continental margin and includes the coast of Santa Catarina, Paraná, São Paulo and Rio de Janeiro states. Its northern limit is the Campos Basin through the High of Cabo Frio and the southern one with the Pelotas Basin through the Platform of Florianópolis, totaling an area of approximately 350,000 square kilometers in a water depth of 3,000 m. The Paranapanema Lineament has WNW / ESE direction, and extends from the area filled by the Paraná Basin, on the border between the states of Sao Paulo and Parana, lasting up to near the ocean floor along with the fracture zone of Rio de Janeiro. The Capricorn Lineament is a feature inherited from the separation between the continents of Africa and South America, and is the main structural feature NW / SE of the Santos Basin center-south region. These two structures together with other ones with continental origin may be associated with structural features in the sediments from the Santos Basin. This work aims to characterize the structures operating in the central portion of the Santos Basin based on subsurface data in the offshore area (2D seismic) together with data from the surface of the continental basement in a way to correlate the Santos Basin structures with the continental regional traits. This data interpolation showed that the structural features of the continent operates on the submerged zone, the seismic sections show these structural trends for the Paranapanema Lineament / Fracture Zone of Rio de Janeiro, Capricorn Lineament and two fault zones that exhibit structures typical of a transfer zone

Utilização de dados e técnicas de Sensoriamento Remoto no monitoramento da infestação por plantas aquáticas em reservatório de hidrelétrica

As an effect of the imbalance caused by the damming of rivers and pollution, it has been observed a growing aquatic plants infestation in reservoirs for the generation of electricity. In addition to power generation, these sites have also been used for various other purposes, including recreation, attracting water and navigation. Thus it is important to evaluate these water bodies periodically, in order to verify the leading conditions to the growth of algae, plants and other organisms. In this sense, Remote sensing technology can be a valuable tool for mapping and monitoring the occupation of land in the vicinity of the water body and the optical properties of water, to provide subsidies for the effective management of these aquatic environments. This paper aims to perform the monitoring of the occurrence of aquatic plants in Salto Grande Hydropower Reservoir, located in Americana (SP) and, periodically, map the occupation of land in the vicinity of the water body, through multispectral images taken by sensors on the satellites Landsat series in seven consecutive years: 2004, 2005, 2006, 2007, 2008, 2009 and 2010. The adopted methodological procedure included the images data and the classification of multispectral images to map, every year, the location and extension of the area infested by aquatic plants and the occupation of land

Análise dinâmica e estrutural de virabrequim

This paper deals with static analysis and dynamic stress of an ensemble crank and crankshaft, contained within a combustion engine of 4 cylinders. Aimed to illustrate procedures for computer-aided analysis having as goal the optimization of components according to the need for the market demand. Thus, to work in static and dynamic analyzes were summarized the basic theory involved in the calculations and analyzes necessary actuation forces and held a brief introduction about the manufacturing process and forging. Subsequently, it was applied with the use of software in a case the crankshaft, to obtain the performance and structural dynamic thereof. There was a conservative result and critical points in the fillet of the crankshaft bearing, as well as for lubrication hole. It was concluded that there are possibilities for improvements in the manufacturing process and design optimization in order to provide lower criticality and a more robust part

Monitoramento participativo de sistemas de produção orgânica através de indicadores de sustentabilidade

O século passado foi marcado por grandes avanços tecnológicos na agricultura que culminaram com a chamada “Revolução Verde”, a qual é hoje, comprovadamente, considerada como um modelo insustentável. Tal fato tem motivado instituições científicas e agricultores a buscarem por novos paradigmas para a produção. A agroecologia tem se destacado por abordar o manejo de agroecossistemas dentro de uma visão holística, sistêmica e participativa, subsidiando a recuperação das suas funções e a autonomia durante a transição agroecológica. Nesse contexto, a utilização de ferramentas para avaliação e monitoramento do processo, como a análise de indicadores de sustentabilidade, é fundamental. O presente estudo teve como objetivo monitorar participativamente o grau de sustentabilidade de duas unidades de produção orgânica em Jaguariúna-SP, após cinco anos de uma primeira avaliação. Foram analisados 81 indicadores, abordando quatro dimensões da sustentabilidade: ambiental, social, econômica e política. Os resultados foram obtidos de forma consensual e participativa entre pesquisadores e agricultores, enriquecendo o estudo. Do ponto de vista global, houve um leve avanço no grau de sustentabilidade das duas propriedades. No entanto, ambas continuam no mesmo nível de transição agroecológica apresentado em pesquisa realizada em 2005.

Monitoramento da Qualidade do leite: Procedimentos Diagnósticos

Means for milk, not otherwise specified, the product from complete and uninterrupted milking , in a hygienic, healthy cows, well fed and rested. The milk of other animals must be called according to origin of species. One of the main characteristics that defined the milk is the set of their sensory characteristics, and the main flavor. The control of milk quality in Brazil has been an important factor for the consolidation of the entire production chain, passing necessarily by the dairy industry. The production of milk with good quality guarantees, of course, food safety for consumers. The measures to obtain milk begin on the property, in carrying out correct procedures for milking, storage and transportation of the product also in the dairy. Later, in the laboratory evaluation of physicochemical properties, research fraud, and microbiological examinations. Finally, measures of health education are need for producers to become aware of the economic benefits by obtaining a better quality milk. The objective of this review is to emphasize the importance of using diagnostic procedures methods for the control of mastitis and consequently obtain better Milk quality