"João Ferrador na República de São Bernardo" : o impacto do "novo" movimento sindical do ABC paulista no processo de transição democrática (1977-1980)

Nesta dissertação, analisa-se o impacto do surgimento do “novo” sindicalismo no ABC Paulista através da ação do Sindicato dos Metalúrgicos de São Bernardo do Campo e Diadema no processo de abertura política. A ação desse importante ator coletivo naquela conjuntura resultou numa gama de novos repertórios de ação coletiva, bem como no reaparecimento da questão operária, após quase uma década de desaparecimento público. Esse novo ímpeto para a ação, produzido na relação conflitiva com os empresários e após com o Estado, serviu não só para produzir uma identidade política para os metalúrgicos do ABC paulista, com também uma agenda de demandas que se ampliava a cada embate e, sobretudo, um tensionamento sobre a esfera política, fazendo avançar o conteúdo nitidamente conservador assumido pela abertura “pelo alto”. A análise se concentrou no período que vai do ano de 1977 ao ano de 1980, avançando, portanto, sobre a data de fundação do Partido dos Trabalhadores, que serviria de referência para a entrada do movimento num campo marcadamente político-partidário. A análise do tema, através do uso de diversos materiais, dentre os quais entrevistas inéditas com sindicalistas que vivenciaram os acontecimentos, além de farta documentação da imprensa sindical do período, possibilitou situar a dimensão alcançada pela luta sindical naquela conjuntura e a forma como repercutiu na política nacional.

Export-led recoveries in small open industrialized economies

This paper studies the role of Vertical Specialization-based trade and foreign damand push as elements capable of explaining export-led recoveries in small open industrialized economies. The empirical evidence on export-led recoveries is reviewed. Data supporting the growing importance of vertical specialization for international trade are presented. I compare the performance of two versions of a small open economy model, calibrated to mimic Canadian Business Cycles. The …rst one is based upon Schmitt-Grohe(1998). The second incorporates Vertical- Specialization-based trade. I show that an arti…cial economy featuring Vertical-Specializationbased trade in conjunction with an exogenous AR(2) process for foreign output displays improved impulse responses to a foreign output shock and is able to mimic the contribution of Canadian exports to output growth during economic recoveries.

Síntese e caracterização de TaC e óxido misto de tântalo e cobre nanoestruturados a partir do precursor oxálico de tântalo através de reações gás-sólido e sólido-sólido a baixa temperatura

The research and development of nanostructured materials have been growing significantly in the last years. These materials have properties that were significantly modified as compared to conventional materials due to the extremely small dimensions of the crystallites. The tantalum carbide (TaC) is an extremely hard material that has high hardness, high melting point, high chemical stability, good resistance to chemical attack and thermal shock and excellent resistance to oxidation and corrosion. The Compounds of Tantalum impregnated with copper also have excellent dielectric and magnetic properties. Therefore, this study aimed to obtain TaC and mixed tantalum oxide and nanostructured copper from the precursor of tris (oxalate) hydrate ammonium oxitantalato, through gas-solid reaction and solid-solid respectively at low temperature (1000 ° C) and short reaction time. The materials obtained were characterized by X-ray diffraction (XRD), Rietveld refinement, Scanning Electron Microscopy (SEM), Spectroscopy X-Ray Fluorescence (XRF), infrared spectroscopy (IR), thermogravimetric (TG), thermal analysis (DTA) and BET. Through the XRD analyses and the Reitiveld refinement of the TaC with S = 1.1584, we observed the formation of pure tantalum carbide and cubic structure with average crystallite size on the order of 12.5 nanometers. From the synthesis made of mixed oxide of tantalum and copper were formed two distinct phases: CuTa10O26 and Ta2O5, although the latter has been formed in lesser amounts

Estudo da molhabilidade de ligas de adição à base de prata sobre insertos cerâmicos para aplicação em brocas perfuração de poços de petróleo

Metal-ceramic interfaces are present in tricone drill bits with hard ceramic inserts for oil well drilling operations. The combination of actions of cutting, crushing and breaking up of rocks results in the degradation of tricone drill bits by wear, total or partial rupture of the drill bit body or the ceramic inserts, thermal shock and corrosion. Also the improper pressfitting of the ceramic inserts on the bit body may cause its total detachment, and promote serious damages to the drill bit. The improvement on the production process of metal-ceramic interfaces can eliminate or minimize some of above-mentioned failures presented in tricone drill bits, optimizing their lifetime and so reducing drilling metric cost. Brazing is a widely established technique to join metal-ceramic materials, and may be an excellent alternative to the common mechanical press fitting process of hard ceramic inserts on the steel bit body for tricone drill bit. Wetting phenomena plays an essential role in the production of metal/ceramic interfaces when a liquid phase is present in the process. In this work, 72Silver-28Copper eutectic based brazing alloys were melted onto zirconia, silicon nitride and tungsten carbide/Co substrates under high vacuum. Contact angle evolution was measured and graphically plotted, and the interfaces produced were analysed by SEM-EDX. The AgCu eutectic alloy did not wet any ceramic substrates, showing high contact angles, and so without chemical interaction between the materials. Better results were found for the systemns containing 3%wt of titanium in the AgCu alloy. The presence os titanium as a solute in the alloy produces wettable cand termodinamically stable compounds, increasing the ceramics wetting beahviour

Anapyrexia during hypoxia

Reducing body temperature has been found to improve survival not only due to hypoxia (the main focus of this review) but also to ischemia, shock, and many other types of insults. Under these conditions, there is a reduced oxygen delivery to the brain. To compensate the hypoxia, a regulated hypothermia (anapyrexia-Glossary of terms for Thermal Physiology, Commission for Thermal Physiology, 2001) takes place, which has been reported as a beneficial response since the drop in body temperature causes a reduced oxygen demand. The objective of the present article is to review the current knowledge of the mechanisms of hypoxia-induced anapyrexia, focusing on its neurochemical control mainly at the preoptic region of the anterior hypothalamus. (c) 2005 Elsevier Ltd. All rights reserved.

Study of the presence of the spores of Clostridium botulinum in honey in Brazil

The isolation of Clostridium botulinum from honey samples is described. Botulism is characterized as an intoxication provoked by ingestion of contaminated foods with this toxin. Infant botulism happens by the ingestion of spores of C. botulinum together with food that in special conditions of the intestinal tract, such as those present in babies of less than 1 year old, will allow the germination and colonization of the intestine with production and absorption of botulinic toxin. The samples were subjected to dilution and to a thermal shock and cultivated in modified CMM (Difco). Cultures were subjected to Gram smears and toxicity tests in mice. The toxic cultures were purified in RFCA (Oxoid) plates and incubated in anaerobic jars. Positive samples were typed using the mouse assay neutralization test. From the 85 honey samples analyzed, six were positive for C. botulinum (7.06%), and identified as producers of type A, B, and D toxins.

Production of Ti-35Nb alloy by powder metallurgy for aerospace application

Titanium and its alloys provide high strength-to-weight ratios, good fatigue strength and increased corrosion resistance compared with others materials. Its acceptance in aerospace has been limited by costs considerations such as high cost of raw material, high buy-to-fly ratios and expensive machining operations. Significant cost reductions can be obtained by vacuum sintering and powder metallurgy (P/M) techniques by producing near net shapes and consequently minimizing material waste and machining time. The Ti 35Nb alloy exhibit a low modulus of elasticity. Stemming from the unique combination of high strength, low modulus of elasticity and low density, this alloy is intrinsically more resistant to shock and explosion damages than most other engineering materials. Samples were produced by mixing of initial metallic powders followed by uniaxial and cold isostatic pressing with subsequent densification by sintering between 900 and 1600 °C, in vacuum. Sintering behavior was studied by means of dilatometry. Sintered samples were characterized for phase composition, microstructure and microhardness by X-ray diffraction, scanning electron microscopy and Vickers indentation, respectively. Density was measured by Archimedes method. Copyright © 2004 Society of Automotive Engineers, Inc.

An efficient modal control strategy for the active vibration control of a truss structure

In this paper an efficient modal control strategy is described for the active vibration control of a truss structure. In this approach, a feedback force is applied to each mode to be controlled according to a weighting factor that is determined by assessing how much each mode is excited by the primary source. The strategy is effective provided that the primary source is at a fixed position on the structure, and that the source is stationary in the statistical sense. To test the effectiveness of the control strategy it is compared with an alternative, established approach namely, Independent Modal Space Control (IMSC). Numerical simulations show that with the new strategy it is possible to significantly reduce the control effort required, with a minimal reduction in control performance. © 2007 - IOS Press and the authors. All rights reserved.

Intussuscepção ileocólica associada a torção mesentérica em um cão: Relato de caso

Mesenteric torsion is a rare disease in dogs whereas it is more common to affect large animals. The main clinical signs observed are acute, such as prostration and abdominal distension which evolve to a state of shock and death. This paper reports the mesenteric torsion in a dog that was presented to veterinary care with generalized acute abdominal pain of sudden onset. At the physical examination, signs of acute abdomen, rectal temperature of 35 oC, moderate dehydration, congested mucous membrane, and prostration were detected. Emergency therapy was instituted and radiographic and ultrasound examinations were requested. The radiography showed increase in the bowel diameter and an image suggestive of intussusception. The patient was referred to emergency exploratory laparotomy and obtained a definite diagnosis of ileocolic intussusception associated to mesenteric torsion. Due to the extent of intestinal dysfunction, the patient was euthanized on the operating table.

Análises moleculares das formigas lava-pés (Solenopsis spp.) (Hymenoptera : Formicidae) e da presença da endobactéria Wolbachia

Pós-graduação em Ciências Biológicas (Biologia Celular e Molecular) - IBRC

Abordagem matemática de roll waves em escoamentos hiperconcentrados com superfície livre

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Fístula oronasal em cão: reparo com flape simples associado a fator proteíco angiogênico purificado do látex de seringueira, veiculado com matriz de esponja de colágeno : estudo experimental

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudos clínico, laboratorial e eletrocardiográfico dos efeitos da solução hipertônica de cloreto de sódio a 7,5%, intravenosa, em cães clinicamente sadios

Pós-graduação em Medicina Veterinária - FMVZ

A ironia e sua refrações: um estudo sobre a dissonância na paródia e no riso

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Pesquisa de Streptococcus Agalactiae em gestantes residentes em Belém-Pará

Na infecção por Streptococcus agalactiae são reconhecidas duas formas neonatais, a de início precoce, cujo quadro clínico é caracterizado por bacteremia com envolvimento pulmonar, meningite é a manifestação clínica predominante. Considerando-se a gravidade da patologia, o desconhecimento da incidência desta bactéria em gestantes residentes na região Norte do Brasil e a importância do seu diagnóstico em exames pré-natais, é fundamental a determinação da ocorrência dos estreptococos do B neste referido grupo populacional. Portanto, este estudo objetivou a realização do diagnóstico laboratorial de Streptococcus agalactiae no trato genital feminino de gestantes, no último trimestre de gestação, determinando a incidência e alertando sobre a importância do diagnóstico no exame pré-natal. O estudo foi realizado no período de fevereiro a agosto de 2002, em 50 gestantes voluntárias residentes e domiciliadas na cidade de Belém-Pará, procedentes do setor de Tocoginecologia da Universidade Federal do Pará, e a identificação da bactéria foi realizada através da bacterioscopia e da cultura do conteúdo vaginal. Das 50 gestantes estudadas, sete (14 %) apresentavam cultura positiva para Streptococcus agalactiae. Destas, duas (28,6 %) eram primigestas e cinco (71,4 %) secundigestas. Os resultados obtidos indicaram a presença significativa da bactéria, indicando a necessidade da adoção de medidas profiláticas da infecção por este agente, devido às altas taxas de morbidade e mortalidade associadas ao estreptococo do grupo B.