COBERTURAS SEDIMENTARES CENOZÓICAS DA BACIA DO RIO JUNDIAÍ – SP.

Este trabalho apresenta a caracterização geológica das coberturas sedimentares cenozóicas da bacia do Rio Jundiaí e suas relações com a evolução geológica regional. Sobre o Embasamento Cristalino, ocorrem depósitos paleozóicos pertencentes ao Grupo Itararé, depósitos terciários e quaternários. Os depósitos terciários constituem ocorrências locais, pois grande parte das seqüências foi removida pela erosão e os restos estão quase sempre encobertos pelas coberturas mais jovens. Correspondem a um antigo sistema de leques aluviais com área-fonte na Serra do Japi e sua origem se associa à formação das escarpas de falhas que controlam as áreas serranas. Os depósitos colúvio-eluviais são constituídos por material areno-argiloso maciço com linhas de pedra basais, que compõe corpos descontínuos controlados por estruturas geológicas. Os depósitos aluviais também acompanham importantes direções estruturais. A distribuição destas coberturas é condicionada pelo relevo, onde conjuntos de falhas de direção predominantemente NW-SE promoveram o abatimento da porção central da área, controlando a implantação da bacia hidrográfica do Rio Jundiaí. A ocorrência de depósitos aluviais em locais onde atuam esforços transtensivos é de grande importância para a exploração dos recursos hídricos subterrâneos. O afeiçoamento da paisagem condicionado por fatores endógenos atesta a importância dos processos neotectônicos em ambiente intraplaca.

Formação e atuação de professores em educação ambiental

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A similaridade no uso do microhabitat por girinos (Amphibia, Anura) reflete processos ecológicos ou filogenéticos?

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

Produção de biossurfactantes utilizando resíduos agroindustriais como substrato

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

Potenciais periódicos: aplicação à espectroscopia do benzeno

Pós-graduação em Física - FEG

Conversor para pulsos elétricos de alta tensão, de curta duração, para processos de geração de ozônio

Pós-graduação em Engenharia Elétrica - FEIS

ICE-KEEL SCOUR MARKS IN THE GEOLOGICAL RECORD: EVIDENCE FROM CARBONIFEROUS SOFT-SEDIMENT STRIATED SURFACES IN THE PARANA BASIN, SOUTHERN BRAZIL

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

Control of Limit Cycle Oscillation in a Three Degrees of Freedom Airfoil Section Using Fuzzy Takagi-Sugeno Modeling

This work presents a strategy to control nonlinear responses of aeroelastic systems with control surface freeplay. The proposed methodology is developed for the three degrees of freedom typical section airfoil considering aerodynamic forces from Theodorsen's theory. The mathematical model is written in the state space representation using rational function approximation to write the aerodynamic forces in time domain. The control system is designed using the fuzzy Takagi-Sugeno modeling to compute a feedback control gain. It useds Lyapunov's stability function and linear matrix inequalities (LMIs) to solve a convex optimization problem. Time simulations with different initial conditions are performed using a modified Runge-Kutta algorithm to compare the system with and without control forces. It is shown that this approach can compute linear control gain able to stabilize aeroelastic systems with discontinuous nonlinearities.

Efficacy of sperm motility after processing and incubation to predict pregnancy after intrauterine insemination in normospermic individuals

Background: Intrauterine insemination (IUI) is widely used to treat infertility, and its adequate indication is important to obtain good pregnancy rates. To assess which couples could benefit from IUI, this study aimed to evaluate whether sperm motility using a discontinuous gradient of different densities and incubation in CO2 in normospermic individuals is able to predict pregnancy.Methods: A total of 175 couples underwent 175 IUI cycles. The inclusion criteria for women were as follows: 35 years old or younger (age range: from 27 to 35 years) with normal fallopian tubes; endometriosis grades I-II; unexplained infertility; nonhyperandrogenic ovulatory dysfunction. Men with normal seminal parameters were also included. All patients underwent ovarian stimulation with clomiphene citrate and human hMG or r-FSH. When one or (at most) three follicles measuring 18 to 20 mm were observed, hCG (5000 UI) or r-hCG (250 mcg) was administered and IUI performed 36-40 h after hCG. Sperm processing was performed using a discontinuous concentration gradient. A 20 microliters aliquot was incubated for 24 h at 37 degrees C in 5% CO2 following a total progressive motility analysis. The Mann-Whitney and Chi-square tests, as well as a ROC curve were used to determine the cutoff value for motility.Results: Of the 175 couples, 52 (in 52 IUI cycles) achieved clinical pregnancies (CP rate per cycle: 29.7%). The analysis of age, duration and causes of infertility did not indicate any statistical significance between pregnancy and no pregnancy groups, similar to the results for total sperm count and morphology analyses, excluding progressive motility (p < 0.0001). The comparison of progressive motility after processing and 24 h after incubation between these two groups indicated that progressive motility 24 h after incubation was higher in the pregnancy group. The analysis of the progressive motility of the pregnancy group after processing and 24 h after incubation has not shown any motility difference at 24 h after incubation; additionally, in couples who did not obtain pregnancy, there was a statistically significant decrease in progressive motility 24 h after incubation (p < 0.0001). The ROC curve analysis generated a cutoff value of 56.5% for progressive motility at 24 h after incubation and this cutoff value produced 96.1% sensitivity, 92.7% specificity, 84.7% positive predictive value and 98.3% negative predictive value.Conclusions: We concluded that the sperm motility of normospermic individuals 24 h after incubation at 37 degrees C in 5% CO2, with a cutoff value of 56.5%, is predictive of IUI success.

Critical points on growth curves in autoregressive and mixed models

Adjusting autoregressive and mixed models to growth data fits discontinuous functions, which makes it difficult to determine critical points. In this study we propose a new approach to determine the critical stability point of cattle growth using a first-order autoregressive model and a mixed model with random asymptote, using the deterministic portion of the models. Three functions were compared: logistic, Gompertz, and Richards. The Richards autoregressive model yielded the best fit, but the critical growth values were adjusted very early, and for this purpose the Gompertz model was more appropriate.

The phylogeny and ontogeny of autonomic control of the heart and cardiorespiratory interactions in vertebrates

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Bifurcations Leading to Nonlinear Oscillations in a 3D Piecewise Linear Memristor Oscillator

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

Comparative analysis between overlapping and non-overlapping operation modes for the PWM buck converter using the three-state switching cell

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Three-dimensional analysis of reinforced concrete members via embedded discontinuity finite elements

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

O advento de novas matrizes energéticas no Brasil: experiências da implantação do PNPB em Mirante do Paranapanema e a produção de biodiesel em Mauá, Estado de São Paulo

Faced with the global discussion about the development of new alternative energy sources, this work tries to contribute to the understanding of the introduction of biodiesel in the energy market, identifying the barriers in the social logic, economic and productive in different spaces, rural and urban. Based on the guidelines of the National Biodiesel Production and Use Program (PNPB), it intended to accompany the implementation of public policies in relation to family farmers settled in the Pontal, located in the western region of São Paulo. In parallel, we will analyze the organizational structure and logistics of the production of biodiesel in the city, although it does not dependent on agricultural production and it is not a target of public policies, it takes advantage of the demand created by PNPB when it comes to increasing the amount of biodiesel blended with mineral origin diesel. The activity examined in the urban space is the collection of used frying oil held by Ecosanta Biofuels, a company located in the town of Maua, São Paulo metropolitan region. The monograph aims to broaden our understanding despite the urban-rural issue regarding the obstacles and opportunities in expanding renewable energy