983 resultados para Membranes (Technology)


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Report of the Dormitory and Dining Services Revenue Bond Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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Report of the Recreational Facility Revenue Bond Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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Report of the Student Health Facility Revenue Bond Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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Report of the Utility System Revenue Bond Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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Report of the Parking System Revenue Bond Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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Report of the Ice Arena Facility Revenue Note Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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Report of the Indoor Multipurpose Use and Training Facility Revenue Bond Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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Report of the Regulated Materials Facility Revenue Bond Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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Report of the Memorial Union Revenue Bond Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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Report of the Athletic Facilities Revenue Bond Funds of Iowa State University of Science and Technology as of and for the year ended June 30, 2008

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We employ a non-parametrical approach to growth accounting (Data Envelopment Analysis,DEA) to disentangle the proximate sources of labour productivity growth in 41 nationsbetween 1929 and 1950 by decomposing productivity growth into four components:technological change; efficiency catch-up (movements towards the production frontier),capital accumulation and human capital accumulation. We show that efficiency catch-upgenerally explains productivity growth, whereas technological change and factoraccumulation were limited and distorted by the effects of war. War clearly hamperedefficiency. Moreover, an unbalanced ratio of human capital to physical capital (a gap to thetechnological leader) was crucial for efficiency catching-up.

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principal objectivo deste trabalho é o estudo da viabilidade técnica e económica da dessalinização da água do mar, utilizando a energia solar, tomando como caso de aplicação uma pequena comunidade rural de Cabo Verde, a vila piscatória de Salamansa, local onde há graves problemas com a disponibilidade de água potável. No entanto, a proximidade do mar e a disponibilidade de energia solar sugerem a dessalinização como processo para mitigar a falta de água. A dessalinização da água do mar pode ser obtida através de diversas técnicas que podem ser agrupadas de acordo com os princípios em que estes processos se baseiam: processos de dessalinização térmica (destilação solar, destilação multi-estágio, destilação multi-efeito, etc.) e processos de dessalinização por membranas (electrodiálise e osmose inversa). A destilação solar passiva foi a tecnologia de dessalinização estudada neste trabalho e que se pode vir a tornar uma alternativa promissora para um fornecimento regular de água. Por outro lado, o uso de fontes alternativas de energia, como a solar, apresenta-se como uma solução para viabilizar a dessalinização em meios semi-áridos como o deste caso de estudo. Fez-se uma modelação matemática da unidade de destilação solar proposta utilizando o Engineering Equation Solver (EES) como ferramenta para ajudar a resolver as equações de balanço térmico. O projecto do destilador solar proposto poderá atender às necessidades de água doce para consumo de 18 famílias constituídas por 5 agregados (92 pessoas) e apresenta uma eficiência média diária de aproximadamente 78% no Verão e 77% no Inverno.

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London s financial market underwent dramatic change after 1700. More limitedthan Paris or Amsterdam in the seventeenth century, London became the leadingfinancial centre in Europe in the eighteenth century. There is an extensive andgrowing literature on the causes of this change, but comparatively little on thechange itself. This article provides detailed information on the operation of theLondon financial market around 1700 by describing the operations of a nascentLondon bank.

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We formulate a knowlegde--based model of direct investment through mergers and acquisitions. M&As are realized to create comparative advantages by exploiting international synergies and appropriating local technology spillovers requiring geographical proximity, but can also represent a strategic response to the presence of a multinational rival. The takeover fee paid tends to increase with the strength of local spillovers which can thus work against multinationalization. Seller's bargaining power increases the takeover fee, but does not influence the investment decision. We characterize losers and winners from multinationalization, and show that foreign investment stimulates research but could result in a synergy trap reducing multinationals' profits.

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Audit report on the Iowa State Center Business Office of Iowa State University of Science and Technology for the year ended June 30, 2008