896 resultados para Pre-eclampsia and eclampsia


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We investigated the mechanisms responsible for increased blood pressure and sympathetic nerve activity (SNA) caused by 2-3 days dehydration (DH) both in vivo and in situ preparations. In euhydrated (EH) rats, systemic application of the AT(1) receptor antagonist Losartan and subsequent pre-collicular transection (to remove the hypothalamus) significantly reduced thoracic (t) SNA. In contrast, in DH rats, Losartan, followed by pre-collicular and pontine transections, failed to reduce tSNA, whereas transection at the medulla-spinal cord junction massively reduced tSNA. In DH but not EH rats, selective inhibition of the commissural nucleus tractus solitarii (cNTS) significantly reduced tSNA. Comparable data were obtained in both in situ and in vivo (anaesthetized/conscious) rats and suggest that following chronic dehydration, the control of tSNA transfers from supra-brainstem structures (e. g. hypothalamus) to the medulla oblongata, particularly the cNTS. As microarray analysis revealed up-regulation of AP1 transcription factor JunD in the dehydrated cNTS, we tested the hypothesis that AP1 transcription factor activity is responsible for dehydration-induced functional plasticity. When AP1 activity was blocked in the cNTS using a viral vector expressing a dominant negative FosB, cNTS inactivation was ineffective. However, tSNA was decreased after pre-collicular transection, a response similar to that seen in EHrats. Thus, the dehydration-induced switch in control of tSNA from hypothalamus to cNTS seems to be mediated via activation of AP1 transcription factors in the cNTS. If AP1 activity is blocked in the cNTS during dehydration, sympathetic activity control reverts back to forebrain regions. This unique reciprocating neural structure-switching plasticity between brain centres emphasizes the multiple mechanisms available for the adaptive response to dehydration.

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Direct analysis, with minimal sample pretreatment, of antidepressant drugs, fluoxetine, imipramine, desipramine, amitriptyline, and nortriptyline in biofluids was developed with a total run time of 8 min. The setup consists of two HPLC pumps, injection valve, capillary RAM-ADS-C18 pre-column and a capillary analytical C 18 column connected by means of a six-port valve in backflush mode. Detection was performed with ESI-MS/MS and only 1 mu m of sample was injected. Validation was adequately carried out using FLU-d(5) as internal standard. Calibration curves were constructed under a linear range of 1-250 ng mL(-1) in plasma, being the limit of quantification (LOQ), determined as 1 ng mL(-1), for all the analytes. With the described approach it was possible to reach a quantified mass sensitivity of 0.3 pg for each analyte (equivalent to 1.1-1.3 fmol), translating to a lower sample consumption (in the order of 103 less sample than using conventional methods). (C) 2008 Elsevier B.V. All rights reserved.

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In this paper, Finite Element method and full-scale experiments have been used to study a hot forging method for fabri-cation of a spindle using reduced initial stock size. The forging sequence is carried out in two stages. In the first stage, the hot rolled cylindrical billet is pre-formed and pierced in a closed die using a spherical nosed punch to within 20 mm of its base. This process of piercing or impact extrusion leads to high strains within the work piece but requires high press loads. In the second stage, the resulting cylinder is placed in a die with a flange chamber and upset forged to form a flange. The stock mass is optimized for complete die filling. Process parameters such as effective strain distribution, material flow and forging load in different stages of the process are analyzed. It is concluded from the simulations that minor modifications of piercing punch geometry to reduce contact between the punch and emerging vertical walls of the cylinder appreciably reduces the piercing load. In the flange chamber, a die surfaces angle of 52° instead of 45° is pro-posed to ensure effective material flow and exert sufficient tool pressure to achieve complete cavity filling. In order to achieve better compression, it is also proposed to shorten both the length of the inserted punch and the die “tongues” by a few mm.

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This thesis is about the role of special educators in (pre)school and about developing democratic communication. It is based on the theory of argumentation developed by Jürgen Habermas. The aim of the study was to describe the conditions that create possibilities for deliberative communication between special educators, parents, students and colleagues in (pre)school. My overarching aim was to contribute to a more distinct description of special educators´ field of knowledge. I have used a social constructionist approach. The project has been based in the field of action research. A precondition for deliberative dialogues in (pre)schools is to start out from a communicative perspective. That means that (1) some theoretical conditions have been made apparent, (2) knowledge about these conditions have been shown to be crucial for using an aware communicative perspective in a speech act, (3) an aware communicative perspective is revealed through procedures of knowledge. These procedures were understood by and made evident to me as a result of network meeting discussions. A communicative perspective, a special educator as facilitator and procedures of knowledge are found to be crucial for collaboration using a deliberative attitude in (pre)schools. Today there is often a lack of pedagogical professionals in (pre)schools who can act as a link between authorities, organisations, professionals and parents, and who have the authority to pose challenging pedagogical questions. This can be changed if the role of special educators is, instead of teacher, defined as communicative special educators working with dialogues on different levels.

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Charter tourism as a product: a sociological analysis of agency in the experience economy In recent years charter tourism as a convenient and cost-effective mode of travelling has been declining. This may be related to dominating societal ideals promoting self-actualization, individual exploration and spontaneity. However, not much is known about the development of ideals and practices among charter tourists. By use of ethnographic fieldwork methodology, including pre-departure and post-travel telephone interviews, this exploratory study investigated a group of Danish charter tourists travelling to Gran Canaria. Results show that the charter tourists were active in navigating between a series of central dilemmas posed by the consumption of a mass product in an individualized societal context, thereby shaping their experiences to form a desirable tourist product.

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Classroom interaction is particularly important for those students who learn school knowledge in a second language. In this article two episodes of whole class teaching in pre-school and standard one are analyzed. The analysis shows the importance of making teachers aware of interactional patterns in classrooms. Although knowledge was presented clearly and concretely and teachers used routines that made norms explicit, inconsistencies in interactional patterns made the role of the teacher stand out as unclear. Whole class teaching of this type does not provide students with such linguistic and intellectual demands that are necessary for their language development.

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After receiving tenure, faculty acquire new responsibilities, experience less pressure to produce research, and receive significantly less guidance than during the probationary period. Despite these changes, few institutions provide intensive support to newly-tenured faculty. This report highlights institutional efforts to support this faculty cohort and to encourage newly-tenured faculty to craft professional goals that will lead to outstanding research and promotion to full professor. Differences between pre-tenure and tenured faculty responsibilities and professional challenges are also explored.

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Objetivo: Avaliar a influência de mudanças no hábito de fumar sobre o ganho de peso gravídico materno. Métodos: Foram entrevistadas 5.564 gestantes com 20 anos ou mais, sem diabetes mellitus prévio em serviços de pré-natal geral de seis capitais brasileiras, entre 1991 e 1995, e acompanhamos, através de revisão de prontuários, as gestações até o parto, identificando 4.000 gestantes com peso pré-gravídico relatado, peso medido no terceiro trimestre, hábito de fumar e época de sua eventual modificação, quando disponíveis. Resultados: Entre as gestantes ex-fumantes (915, 23% do total), 240 (26%) pararam de fumar durante a gravidez. A mediana de cigarros/dia das que continuaram fumantes (717, 18%) foi reduzida de 10 para 5 após o início da gravidez. Após ajustar para idade, escolaridade, cor da pele, IMC pré-gravídico, paridade e centro clínico, as ex-fumantes ganharam 1.030 g (IC95% 590 a 1.460) a mais que as nunca fumantes, sendo maior a diferença (1.540, IC95% 780 a 2.300 g) nas que pararam após a concepção. O ganho do peso na gravidez se correlacionou, tanto em fumantes quanto em ex-fumantes, com o número de cigarros diminuídos na gravidez. Conclusão: Diminuir ou parar de fumar na gravidez, embora importante para uma gestação saudável, é fator de risco para ganho de peso materno.

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Este trabalho analisa a atuação do Banco Interamericano de Desenvolvimento (BID) quanto ao financiamento de políticas públicas, notadamente o Programa de Revitalização do Centro de São Paulo (Procentro). O período observado se estende da administração Marta Suplicy (2000 – 2004) – gestão em que ocorreu a assinatura do contrato – à administração José Serra/Gilberto Kassab (2004 – 2008). Objetiva-se avaliar a influência exercida pelo BID numa política pública específica, tendo como referência o estudo de caso do Procentro. Para tanto, optou-se por realizar entrevistas em profundidade com alguns técnicos responsáveis por diferentes áreas do Programa, por analisar fontes documentais (contratos, programas e relatórios) com vistas a identificar o tipo de linguagem utilizada pelo Banco, assim como a qualidade de suas demandas e contrapartidas para a realização da referida política publica. As observações centraram-se nas etapas de pré-aprovação e no período da assinatura do contrato; portanto, nas fases entendidas como precondições e condições respectivamente. Constatou-se que as condicionalidades são pressupostos que condicionam a assinatura do Contrato, sendo este circunscrito a um instrumento de garantia de pagamento do empréstimo, o que implica a lógica do “custo-benefício” (o Banco considera apenas, portanto, os aspectos mensuráveis). Para tanto, o Banco exige um conjunto de procedimentos gerenciais que definem o modus operandi dos financiamentos, assim como estipula como padrão formas gerenciais conhecidas como “melhores práticas”. Quanto à análise das diferentes gestões político/partidárias, foi possível observar a opção do BID por não valorizar a participação popular, bem como ignorar as demandas reivindicadas pelos movimentos sociais representantes da população pobre. Ao analisar os documentos, observou-se que o BID possui uma visão particular em relação às políticas públicas baseando-se em modelos internacionais de experiências consideradas bem-sucedidas por ele. Por fim, os documentos assinados com os governos são de difícil acesso, o que denota baixa transparência.

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The capitalist revolution was such a major economic, social and political transformation that that we can see history divided into two phases: ancient and modern times or pre-capitalism and capitalism. While ancient societies change slowly, modern societies change fast as they, for the first time, experience economic development. Taking the more developed countries as reference, capitalism itself may be seen as divided in three phases: commercial capitalism that marked the transition, classical or bourgeois capitalism, and professionals’ or knowledge capitalism. The later, that is dominant since the beginning of the 20th century, may be divided in two phases: the fordist one and the 30 neoliberal years of capitalism (1979-2008).

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As transformações recentes das relações sociais e econômicas incrementados pelo dinamismo do comércio internacional, sua crescente complexidade e as recémdescobertas reservas petrolíferas na camada pré-sal, aliadas ao fenômeno da globalização, contribuem para o processo de internacionalização do Direito. Esse cenário tem demandado, ainda, novos instrumentos de solução dos conflitos e de controle social, exigindo dos magistrados brasileiros maior expertise no julgamento das demandas contemporâneas. Diante desse cenário, é necessário construir alternativas que realmente busquem modificar as estruturas vigentes na teoria, na práxis e no ensino do Direito. Assim, o objetivo geral desta pesquisa é contribuir para a eficiência da prestação jurisdicional dos magistrados, seja no âmbito estadual ou federal, que atuam no Estado do Rio de Janeiro e Espírito Santo, diante dos novos desafios que terão em face do comércio internacional e do pré-sal. Com a finalidade de alcançar seu escopo, a pesquisa, no Capítulo 1, trata dos conceitos, princípios e metodologia para atingir o objetivo geral da pesquisa. O Capítulo 2 ocupa-se da abordagem das disciplinas relevantes para uma eficiente prestação jurisdicional do pré-sal e do comércio internacional. Em seguida, o Capítulo 3 trata de analisar o conteúdo das disciplinas ministradas nas Escolas de Magistratura Estadual do Rio de Janeiro e Federal da 2ª Região, bem como as provas para ingresso à carreira da magistratura federal e estadual do Rio de Janeiro e Espírito Santo, no que tange à existência de disciplinas como Direito do Petróleo, Gás e Energia, Direito Econômico, Direito Internacional Público e Privado, Exploração & Produção, Direito do Mar, Direito Marítimo, Direito da Navegação Marítima, Direito Portuário, Direito Aduaneiro e Direito Ambiental. Por fim, serão feitas algumas considerações e apresentadas as referências da pesquisa.

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This paper distinguishes three types of countries (rich, middle-income, and pre-industrial) and discusses the problems of state capability and the quality of democracy in the later, which include the poor countries. A consolidate democracy supposes that the country has realized its capitalist revolution and counts with a relatively capable state. The challenge of pre-industrial countries is to build their nation and a reasonably capable state, and to make their national and industrial revolution. The democratic state will be its main instrument to achieve the five political objectives that modern societies defined historically: security, individual liberty, economic well-being, social justice, and protection of the environment. Given the demand of the people and the pressure of rich countries since the 1980s, this state will have to be democratic, but, historically, all industrial revolutions were the outcome of a developmental strategy, and none of them were accomplished in the realm of democracy. This is the main contradiction and the main challenge faced by populist leaders who try to develop their countries, having as adversaries the local liberal oligarchy and the rich countries or the West. They must build a capable state, but their poorly organized societies do not help. They must give priority to economic growth, but the people ask for more social services. Thus, to govern these countries is extremely difficult.

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Após uma sequência histórica de ciclos econômicos no Brasil, desde o final da década de 90, o país presencia a abertura do setor do Petróleo ligado à descoberta do pré-sal e o volume imensurável das reservas naturais. Esse marco pôde determinar o início de um dos mais relevantes e diversificados ciclos de industrialização na história econômica do Brasil. Mesmo nesse ramo de negócio, um mercado de gigantes, de multinacionais, de grandes players com estratégias inovadoras e múltiplos know-how's insubstituíveis, é fato conhecido, principalmente para os profissionais dessa seara, que muitas empresas de petróleo possuem inúmeros fatores críticos com urgente necessidade de melhoria. O objetivo principal desta dissertação é fazer inicialmente uma breve análise estratégica e mercadológica da subsidiária brasileira de um grupo multinacional do ramo de Petróleo e Gás especializado em tecnologia de fluidos de perfuração de poços de petróleo, com presença em mais de vinte países. Após imersão no contexto, realizar a análise detalhada de um processo em especial, a primeira vista sem importância, que ao ser estudado, monitorado e mapeado, pôde ser ajustado, redesenhado e implementado, apresentando ganhos substanciais para a corporação relacionados à competitividade e lucratividade.

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Este trabalho objetiva verificar o impacto na renda gerado pelo programa de subsídio tarifário para passageiros de transporte intermunicipal da região metropolitana do Estado do Rio de Janeiro (RMRJ), denominado Programa Bilhete Único Intermunicipal (BUI). Para cálculo do impacto foi utilizada a arrecadação do ICMS do comércio varejista como “proxy” da renda. O método para cálculo do impacto foi o de diferença de diferença (DD) para três definições distintas de grupos de tratamento e controle, considerando o período de janeiro de 2006 a janeiro de 2010 como pré-intervenção e fevereiro de 2010 a dezembro de 2014 como pós-intervenção. A primeira definição comparou a evolução de arrecadação do tributo entre os municípios participantes do programa e os municípios fluminenses situados na região limítrofe à RMRJ como grupo de controle. O segundo exercício manteve o mesmo grupo de controle, porém utilizou apenas os municípios sujeitos à intervenção situados a mais de 30 km de distância da capital Rio de Janeiro como grupo de tratamento. Por fim, como teste de robustez, os grupos de tratamento e controle foram selecionados utilizando o método de pareamento (matching). Através de três variações do modelo de DD para cada definição, foi possível encontrar resultados de impacto positivos na arrecadação de ICMS do comércio varejista para os municípios participantes do programa, em especial para os segundo e terceiro exercícios, o que sugere um aumento na renda de seus habitantes após a introdução do Bilhete Único.

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This work addresses the production of lightweight concrete building elements, such as plates, prefabricated slabs for pre-molded and panels of fencing, presenting a singular concrete: the Lightweight Concrete, with special properties such low density and good strength, by means of the joint use of industrial waste of thermosetting unsaturated polyesters and biodegradable foaming agent, named Polymeric Lightweight Concrete. This study covered various features of the materials used in the composition of the Polymeric Lightweight Concrete, using a planning of factorial design 23, aiming at studying of the strength, production, dosage processes, characterization of mechanical properties and microstructural analysis of the transition zone between the light artificial aggregate and the matrix of cement. The results of the mechanical strength tests were analyzed using a computational statistics tool (Statistica software) to understand the behavior and obtain the ideal quantity of each material used in the formula of the Polymeric Lightweight Concrete. The definition of the ideal formula has the purpose of obtaining a material with the lowest possible dry density and resistance to compression in accordance with NBR 12.646/92 (≥ 2.5 MPa after 28 days). In the microstructural characterization by scanning electron microscopy it was observed an influence of the materials in the process of cement hydration, showing good interaction between the wrinkled face of the residue of unsaturated polyesters thermosetting and putty and, consequently, the final strength. The attaining of an ideal formula, given the Brazilian standards, the experimental results obtained in the characterization and comparison of these results with conventional materials, confirmed that the developed Polymeric Lightweight Concrete is suitable for the production of building elements that are advantageous for construction