Inversion method for obtaining electrical parameters for soil in the rural region in Brazil

This paper presents an inversion methodology through weighted least squares to obtain the electrical parameters for the soil of a typical mid-western region in Brazil using the model based in the formalism of the parabolic equations to calculate the electric field intensity received. To validate this methodology, the results of the radio signal measurement campaign conducted in six radial routes leaving the city of Brasilia, Federal District, where the transmitter was located, were used. The measurements were compared to computer simulations and, thus, the optimal values for the electric conductivity and relative permittivity for the soil of the region could be estimated. Finally, a quantitative analysis of these parameters was performed with the values found in the literature, which demonstrated the effectiveness of the proposed methodology.

Variação genética para os caracteres fisiológicos, bioquímicos e nutricionais em sementes de uma população base de Myracrodruon urundeuva procedente de Aquidauana-MS

Pós-graduação em Agronomia - FEIS

Histeroscopia ambulatorial com laser diodo: uma nova modalidade para tratamento de pólipos endometriais

Pós-graduação em Ginecologia, Obstetrícia e Mastologia - FMB

Projeto e montagem de um sistema compacto de cogeração: aplicação da análise exergoeconômica

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Analise exergoeconômica aplicada a microgeração em condomínios residenciais

Pós-graduação em Engenharia Mecânica - FEG

Estudo comparativo das associações de macroinvertebrados bentônicos e do sedimento dos reservatórios de Chavantes e Salto Grande (rio Paranapanema, SP, PR) e avaliação toxicológica da água e sedimento

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

GEOFÍSICA APLICADA NO ESTUDO DE ÁREA DE LANÇAMENTO DE EFLUENTES DE TRATAMENTO DE ESGOTO

Este trabalho apresenta os resultados da aplicação do método geofísico de eletrorresistividade, especificamente das técnicas de sondagem elétrica vertical e caminhamento elétrico, no estudo de campo experimental, monitorado pela Escola Superior de Agronomia Luis de Queiroz – ESALQ, irrigado por efluentes gerados em lagoas de estabilização do tipo aeróbica-facultativa na ETE (Estação de Tratamento de Esgotos) da SABESP, no município de Lins (SP). Palavras-chave: Caminhamento elétrico, sondagem elétrica vertical, efluentes, fertilização, pluma de contaminação.

Eletrificação e crescimento industrial no estado de São Paulo: 1880-1940

O objetivo deste trabalho é evidenciar a existência de relações entre progresso técnico e desenvolvimento econômico no processo de formação da economia brasileira. Em seu aspecto mais específico, refere-se ao estudo do desenvolvimento da eletrificação e seus efeitos sobre o crescimento industrial no Estado de São Paulo, no período compreendido entre as duas décadas finais do século passado até a década de 1930. Durante este período - quando a economia e a sociedade brasileiras se transformam pelo desenvolvimento de relações de produção de natureza capitalista, ocorridas a partir do fim do escravismo, da introdução do trabalho assalariado, da expansão cafeeira, do aparecimento da ferrovia e dos bancos, das primeiras indústrias e, enfim, de atividades voltadas ao desenvolvimento do mercado interno - , o desenvolvimento da eletrificação e, especialmente, o uso de força motriz elétrica na indústria constituíram transformações essenciais. A o provocarem alterações irrevogáveis na base técnica da indústria contribuíram, também, para a alteração do padrão de acumulação.

Qualidade fisiológica de sementes de milho doce classificadas pela espessura e largura

Sweet maize seeds present lower physiologic quality, when compared to regular maize seeds, due to the influence of several features, such as the seed size and shape. Thus, this study aimed at evaluating the seed physiologic quality of two sweet maize cultivars (BR-401 and BR-402), separately classified according to thickness, by using slotted screen sieves (8/64 x 3/4, 9/64 x 3/4, 10/64 x 3/4, 11/64 x 3/4, 12/64 x 3/4 and 13/64 x 3/4), and width, with round screen sieves (17/64, 18/64, 19/64, 20/64, 21/64 and 22/64). For each cultivar, sorted lots were compared with the unrated batch, following a completely randomized design, in a 2x7 factorial scheme, with four replications. The biometric parameters evaluated were sieve retention, 100 seeds weight and water content. The physiologic quality was determined according to the first counting, germination, cold test, accelerated aging, electric conductivity and seedling emergence in the field. The classification with sieves improved the physiologic quality of sweet maize seeds. Seeds with intermediate thickness, for both cultivars, generally presented greater vigor. Concerning width, larger seeds, for the BR-401 cultivar, and intermediate seeds, for the BR-402 cultivar, showed better physiologic quality.

Previsão de demanda de cargas elétricas por seleção de variáveis stepwise e redes neurais artificiais

Pós-graduação em Engenharia Elétrica - FEIS

Estudo sobre a utilização de energia solar no Brasil para uso residencial

Pós-graduação em Engenharia Elétrica - FEB

Surface potentials of corona-charged ferroelectric P(VDF-TrFE) copolymer samples

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Transmission Expansion Planning Via a Constructive Heuristic Algorithm in Restructured Electricity Industry

The transmission expansion planning problem in modern power systems is a large-scale, mixed-integer, nonlinear and non-convex problem. this paper presents a new mathematical model and a constructive heuristic algorithm (CHA) for solving transmission expansion planning problem under new environment of electricity restructuring. CHA finds an acceptable solution in an iterative process, where in each step a circuit is chosen using a sensitivity index and added to the system. The proposed model consider multiple generation scenarios therefore the methodology finds high quality solution in which it allows the power system operate adequacy in an environment with multiple generators scenarios. Case studies and simulation results using test systems show possibility of using Constructive heuristic algorithm in an open access system.

Estudo geofísico em um depósito de manganês supergênico no município de Itapira - SP

The mining research is a complex activity, which should preferably involve the combination of direct and indirect techniques of geological research. The increasing demand for base metals in domestic and international markets provide the revaluation of mineral occurrences, which can be converted into deposits and mines. This paper presents the results of the application of geophysical methods of electric resistivity and induced polarization in main foliation parallel to the arrangement of the area, in a deposit of oxides and hydroxides in massive and disseminated ores, docked in gneisses and quartzites, located in the municipality of Itapira, in the North of the State of São Paulo in Brazil. Inversion models indicate the predominance of high cargabilidade that partially coincide with low resistivity values. Integration of geophysical data made possible the drafting of sections of electric walking with cross-checking distance x depth, for detailing your target. The integrated analysis of geophysical and geological structural data leads to the conclusion that the primary mining suffers structural control with the regional foliation in ores

Perfil de pesquisa dos departamentos da Faculdade de Engenharia do Campus de Guaratinguetá

To know the profile of research of each Department of Education is of utmost importance for future actions of improvements. This type of study must be made continuously of form to evaluate Departments´ trends as well as the College´s as a whole, besides stimulating the activities of research and formation of human resources of the Departments. In this work is quantified activity of orientation and research of the Departments of the College of Engineering of Guaratinguetá - UNESP, through national and international publications in periodic, congresses and supervisions of graduation works, masters, doctoral, post doctoral, and scientific initiation, in a period five years (2007 through 2012). For balance of points to the considered issues, a criterion based on the CAPES qualification of periodic has been assumed. On the basis of the results of this work, has been observed enormous differences and particularities between the seven analyzed Departments of Education. In a general way, some Departments presented good performance in the three criteria, whereas others obtained a good performance in only one of them. The Department of Materials and Technology was the only one in which 25% of the professors obtained maximum note for the publication in periodic, while in the Departments of Civil, Electric Engineering and Mechanics 75% of the professors did not reach sufficient punctuation in order to equal a publication in periodic with B2 extract