866 resultados para 943


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Smith I:943.

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Title of pt. 3 reads: ... Recueil de plusieurs dissertations [etc.] suivi des Réflexions d'un conspirateur à Basle, et d'une prédiction mémorable de Condorcet.

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Mineral dust has a large impact on regional and global climate, depending on its particle size. Especially in the Atlantic Ocean downwind of the Sahara, the largest dust source on earth, the effects can be substantial but are poorly understood. This study focuses on seasonal and spatial variations in particle size of Saharan dust deposition across the Atlantic Ocean, using an array of submarine sediment traps moored along a transect at 12° N. We show that the particle size decreases downwind with increased distance from the Saharan source, due to higher gravitational settling velocities of coarse particles in the atmosphere. Modal grain sizes vary between 4 and 33 µm throughout the different seasons and at five locations along the transect. This is much coarser than previously suggested and incorporated into climate models. In addition, seasonal changes are prominent, with coarser dust in summer, and finer dust in winter and spring. Such seasonal changes are caused by transport at higher altitudes and at greater wind velocities during summer than in winter. Also the latitudinal migration of the dust cloud, associated with the Intertropical Convergence Zone, causes seasonal differences in deposition as the summer dust cloud is located more to the north, and more directly above the sampled transect. Furthermore, increased precipitation and more frequent dust storms in summer coincide with coarser dust deposition. Our findings contribute to understanding Saharan dust transport and deposition relevant for the interpretation of sedimentary records for climate reconstructions, as well as for global and regional models for improved prediction of future climate.

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Despite a considerable surge in herpetological research in Australia over the last couple of decades the Australian microhylid frogs (Cophixalus and Austrochaperina) remain relatively poorly known. Herein I present the results of extensive fieldwork and molecular, morphological and call analysis with the aim of resolving taxonomy, call variation and distributions, and increasing our understanding of breeding biology. Analysis of 943 base pairs of mitochondrial 16S rRNA and 12S rRNA provides a well supported phylogeny that is largely consistent with current taxonomy. Levels of divergence between species are substantial and significant phylogeographic structuring is evident in C. ornatus, C. neglectus and C. aenigma, sp. nov. The description of C. concinnus was based on a mixed collection of two species from Thornton Peak and a new species is described to resolve this. C. aenigma, sp. nov., is described from high-elevation (>750 m) rainforest across the Carbine, Thornton, Finnigan and Bakers Blue Mountain uplands, north-east Queensland. C. concinnus is redescribed as a highly distinct species restricted to rainforest and boulder fields at the summit of Thornton Peak (>1100 m). Despite protection in Daintree National Park in the Wet Tropics World Heritage Area, predictions of the impact of global warming suggest C. concinnus to be of very high conservation concern ( Critically Endangered, IUCN criteria). The mating call of two species ( C. mcdonaldi and C. exiguus) is described for the first time and high levels of call variation within C. ornatus, C. neglectus, C. hosmeri, C. aenigma and Austrochaperina fryi are presented. Such variation is often attributable to genetically divergent lineages, altitudinal variation and courtship; however, in some instances ( particularly within C. hosmeri) the source or function of highly distinct calls at a site remains obscure. Molecular, morphological and call analyses allow the clarification of species distributions, especially in the northern mountains of the Wet Tropics. Notes are presented on the breeding biology of C. aenigma, C. bombiens, C. concinnus, C. exiguus, C. infacetus, C. mcdonaldi, C. monticola, C. neglectus, C. ornatus and C. saxatilis, which are largely consistent with previous accounts: small terrestrial clutches usually attended by a male. Courtship behaviour in C. ornatus is described and the first records of multiple clutching in Australian microhylids are presented (for C. ornatus and C. infacetus).

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Arsenic contamination of groundwater (0.05 to 0.84 mg/L) in Kuitun, Xinjiang was first found in 1970’s. Alternative clean surface water was introduced in 1985. We aimed to assess the exposure and heath outcome since the mitigation. In 2000, we collected a total of 360 urine samples from villagers from the endemic area and a nearby control area for arsenic (As), porphyrins and malondialdehyde (MDA) measurements. The averaged urinary As level of villagers from the endemic site (117±8.3 μg/g creatinine; 4.2 to 943.8 μg/g creat) was higher than that of the control site (73.6±3.2 μg/g creat). No significant differences were found in urinary porphyrins or MDA between the endemic and control sites. However, when the urinary arsenic was higher than 150 μg/g creat, these two biomarkers were higher in the exposed group than the control. Within the exposed group, villagers with arsenic-related skin symptoms had higher arsenic, uroporphyrin and MDA compared to those who had not shown symptoms. Sine the water mitigation, villagers whose urinary arsenic levels were 270 μg/g creat dropped from 20% to 10% of the population. Population with arsenic-related skin symptoms remained unchanged at 31%. We noted that 7.8% of those who had skin lesions were born after the implementation of intervention and that some villagers still prefer to drink the groundwater. Further, in the dry season, lack of surface water and electrical power breakdowns are to blame for failure to ensure continuous supply of clean water. It is concluded that despite the prompt action and successful water mitigation program to curb arsenic poisonings, it is essential to continue to monitor the health outcome of this population.

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O presente estudo tem como objetivo definir teoricamente o conceito de game show interativo, tendo por referência o novo ambiente de TV digital no Brasil. Para tanto, o método empregado para desenvolver esta pesquisa foi o qualitativo, sendo utilizadas as técnicas de pesquisa bibliográfica, análise documental e pesquisa exploratória. O ponto de partida para tal estudo foi a criação e desenvolvimento do gênero nos Estados Unidos da América local onde teve seu auge, seu declínio e seu ressurgimento quando entra em funcionamento a TV por assinatura. O formato é exportado para vários países, inclusive o Brasil, e dele vislumbram-se várias possibilidades de reformulação a partir do uso das novas tecnologias. Há um novo panorama de construção de conteúdos que foi aberto com as possibilidades da TV digital interativa e este estudo visa apontar o game show como potencial formato para uso exploratório das possibilidades de interatividade.

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Esta dissertação trata de um tema relativamente novo, com literatura escassa, praticamente sem estudos teóricos que o abordem. Referenciais são encontrados em publicações feitas em seminários e palestras bem como em artigos e notas jornalísticas. Esta dissertação se trata de trabalho exploratório, analítico descritivo com base documental. O Programa Bolsa Família, tema central deste trabalho, é uma ferramenta para distribuição de renda que funciona de forma simples e tem sido efetiva para o atendimento de famílias que vivem abaixo da linha de pobreza. Ele é resultado da fusão de vários outros programas dispersos e com efetividade questionável Bolsa Escola, Auxílio Gás e Cartão Alimentação. O Programa Bolsa Família beneficia famílias em situação de pobreza com renda mensal de R$ 70 a R$ 140 per capita e em extrema pobreza com renda mensal abaixo de R$ 70 reais per capita. Também estabelece condicionalidades de educação e saúde. Atualmente, há cerca de 13 milhões de famílias inscritas no Programa Bolsa Família que cumprem as condições do Cadastro Único esta é praticamente a totalidade das famílias pobres segundo critérios do PNAD 2006 (Pesquisa Nacional de Domicílios). Na realidade, houve substancial injeção de recursos em áreas outrora relegadas ao acaso, criando novos consumidores, bem como empreendedores, além de atrair investimentos. Quanto à educação, nota-se que há redução do analfabetismo. Há um crescimento vegetativo do Índice de Desenvolvimento Humano (IDH) no qual o Brasil situa-se em 84⁰ lugar dentre as 187 nações controladas pelo PNUD (Programa das Nações Unidas para o Desenvolvimento) em 2011. As variáveis que compõem o índice crescem timidamente, destaca-se queda no item expectativa de escolaridade esperada das crianças em idade de ingresso na escola (no Brasil, aos seis anos), que caiu no período 2000-2011, esse fato pode indicar falha estrutural no ensino brasileiro. Esse estudo indica que há desenvolvimento socioeconômico em áreas carentes, particularmente na Região Nordeste. Observa-se também a reversão da migração que historicamente era de norte/nordeste a sudeste. Também nota-se redução da taxa de fecundidade das brasileiras, o que é vantajoso. O Brasil também está com a vantagem do Bônus demográfico , quando a população economicamente ativa supera a população dependente, o que é um excelente fator de crescimento por atrair investimentos. Apesar de melhorias observadas na década 2000-2010, elas ainda são insuficientes. Quanto ao desenvolvimento humano , o Brasil está muito distante das nações desenvolvidas, com IDH de 0,718, que cresceu na última década à taxa de 0,769% ao ano. Nesse ritmo, até alcançarmos o IDH norueguês -- primeiro colocado, ou o australiano -- segundo colocado, que é de 0,943 serão necessários 35/36 anos. Isso nos leva a pensar que, a não ser que o acaso nos ajude, o sonho de nos juntarmos aos primeiros é questionável. Com respeito ao Programa Bolsa Família, esse prova ser uma frente social para a eliminação da desigualdade, seus beneficiários eram classificados como pobres e extremamente pobres e foram resgatados.

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Proteomics, the analysis of expressed proteins, has been an important developing area of research for the past two decades [Anderson, NG, Anderson, NL. Twenty years of two-dimensional electrophoresis: past, present and future. Electrophoresis 1996;17:443-53]. Advances in technology have led to a rapid increase in applications to a wide range of samples; from initial experiments using cell lines, more complex tissues and biological fluids are now being assessed to establish changes in protein expression. A primary aim of clinical proteomics is the identification of biomarkers for diagnosis and therapeutic intervention of disease, by comparing the proteomic profiles of control and disease, and differing physiological states. This expansion into clinical samples has not been without difficulties owing to the complexity and dynamic range in plasma and human tissues including tissue biopsies. The most widely used techniques for analysis of clinical samples are surface-enhanced laser desorption/ionisation mass spectrometry (SELDI-MS) and 2-dimensional gel electrophoresis (2-DE) coupled to matrix-assisted laser desorption ionisation [Person, MD, Monks, TJ, Lau, SS. An integrated approach to identifying chemically induced posttranslational modifications using comparative MALDI-MS and targeted HPLC-ESI-MS/MS. Chem. Res. Toxicol. 2003;16:598-608]-mass spectroscopy (MALDI-MS). This review aims to summarise the findings of studies that have used proteomic research methods to analyse samples from clinical studies and to assess the impact that proteomic techniques have had in assessing clinical samples. © 2004 The Canadian Society of Clinical Chemists. All rights reserved.

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At detection threshold, sensitivity improves as the area of a test grating increases, but not when the test is placed on a pedestal and the task becomes contrast discrimination (G. E. Legge, & J. M. Foley, 1980). This study asks whether the abolition of area summation is specific to the situation where mask and test stimuli have the same spatial frequency and orientation ("within-channel" masking) or is more general, also occurring when mask and test stimuli are very different ("cross-channel" masking). Threshold versus contrast masking functions were measured where the test and mask were either both small (SS), both large (LL), or small and large, respectively (SL). For within-channel masking, facilitation and area summation were found at low mask contrasts, but the results for SS and LL converged at intermediate contrasts and above, replicating Legge and Foley (1980). For all three observers, less facilitation was found for SL than for SS. For cross-channel masking, area summation occurred across the entire masking function and results for SS and SL were identical. The results for the entire data set were well fit by an extended version of a contrast masking model (J. M. Foley, 1994) in which the weights of excitatory and suppressive surround terms were free parameters. I conclude that (i) there is no empirical abolition of area summation for cross-channel masking, (ii) within-channel area summation can be abolished empirically without being disabled in the model, (iii) observers are able to restrict the area of spatial integration, but not suppression, (iv) extending a cross-channel mask to the surround has no effect on contrast detection, and (v) there is a formal similarity between area summation and contrast adaptation. © 2004 ARVO.

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Authors analyses questions of the subjective uncertainty and inexactness situations in the moment of using expert information and another questions which are connected with expert information uncertainty by fuzzy sets with rough membership functions in this article. You can find information about integral problems of individual expert marks and about connection among total marks “degree of inexactness” with sensibility of measurement scale. A lot of different situation which are connected with distribution of the function accessory significance and orientation of the concrete take to task decision making are analyses here.

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The author highlights the importance of the difference between the efficiency and effectiveness of using the EU-subsidies. If Hungary cannot use the financial means of the EU efficiently and effectively, then the goal of cohesion and convergence to the level of the old, developed countries of the EU, will be much more difficult and slower. The efficiency of the EU-subsidies involves a quantitative approach, where the ratio of the obliged and disposable amount of EU-subsidies can be measured. The effectiveness of EU-subsidies, on the other hand, requires a much more complicated and complex approach, than the efficiency. The effectiveness of the usage on a project level can be measured by the “added value” of the project; on program level it can be measured by the added GDP growth or employment. The article presents the results of research carried out in the Research Group of Professor Tibor Palánkai at Corvinus University of Budapest, Hungary.

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E rövid írás aktualitását az adja, hogy nemrégen jelent meg magyarul Thomas Piketty híres könyve: A tőke a 21. században. A könyv központi gondolata, hogy az elmúlt kétszáz év átlagában a gazdaság átlagos növekedési üteme, a g jelentősen elmarad az r értékétől, vagyis a tőke átlagos hozamától. A nevezetes r>g összefüggés egyik lehetséges oka, hogy az r szórása nagyobb, mint a g-é. A nagyobb szórás mögött nagyobb kockázati motívumok állhatnak. Ebből következően a Piketty által javasolt adókat jelentős mértékben a pénzügyi tőkének kellene viselnie. ____ The immediacy of this note derives from the fact that Picatty's famous Capital in the Twenty-First Century has been recently published in Hungarian. The central issue in the book is that taking the average of 200 years, the mean growth rate g is lower than the average return on capital r. One possible explanation of this famous r > g inequality may be that the standard deviation of r is greater than that of g because of the greater appetite for risk. The implication to draw from this is that financial capital should bear the majority of the taxes being suggested by Piketty.

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The Tara Oceans Expedition (2009-2013) was a global survey of ocean ecosystems aboard the Sailing Vessel Tara. It carried out extensive measurements of evironmental conditions and collected plankton (viruses, bacteria, protists and metazoans) for later analysis using modern sequencing and state-of-the-art imaging technologies. Tara Oceans Data are particularly suited to study the genetic, morphological and functional diversity of plankton. The present data set includes properties of seawater, particulate matter and dissolved matter that were measured from discrete water samples collected with Niskin bottles during the 2009-2013 Tara Oceans expedition. Properties include pigment concentrations from HPLC analysis (10 depths per vertical profile, 25 pigments per depth), the carbonate system (Surface and 400m; pH (total scale), CO2, pCO2, fCO2, HCO3, CO3, Total alkalinity, Total carbon, OmegaAragonite, OmegaCalcite, and dosage Flags), nutrients (10 depths per vertical profile; NO2, PO4, N02/NO3, SI, quality Flags), DOC, CDOM, and dissolved oxygen isotopes. The Service National d'Analyse des Paramètres Océaniques du CO2, at the Université Pierre et Marie Curie, determined CT and AT potentiometrically. More than 200 vertical profiles of these properties were made across the world ocean. DOC, CDOM and dissolved oxygen isotopes are available only for the Arctic Ocean and Arctic Seas (2013).