نتایج جستجو برای: r41
تعداد نتایج: 111 فیلتر نتایج به سال:
Urban transportation externalities are a key development challenge. Based on the existing literature, the authors illustrate the magnitudes of various external costs, review response policies, and measure and discuss their selection, particularly focusing on the context of developing countries. They find that regulatory policy instruments aimed at reducing local air pollution have been introduc...
Economic development and large amounts of industrial production have led to environmental deterioration. The assessment prediction water environment capacity (WEC) are crucial supports for quality target management. Therefore, this study aims improve WEC via changes in the structure analyze economic changes. For purpose, efficiency (EE), use (WUE), treatment (WTE) estimated by EE–SBM (slack-bas...
Viruses have evolved various strategies to prevent premature apoptosis of infected host cells. Some of the viral genes mediating antiapoptotic functions have been identified by their homology to cellular genes, but others are structurally unrelated to genes of known function. In this study, we used a random, unbiased approach to identify such genes in the murine cytomegalovirus genome. From a l...
We consider an implementation problem faced by a planner who manages a roadway network. The problem entails both hidden information and hidden actions. We solve the planner's problem by introducing a new class of mechanisms and a new notion of implementation. The mechanisms, called price schemes, attach transfers to the available routes; they do not involve direct revelation. The method of impl...
The use of the reconstructed Human Corneal Model (HCE) to assess in vitro eye irritancy of chemicals
The 7 amendment of the EU Cosmetic Directive will lead to the ban of animal testing for cosmetic ingredients in 2009 (acute tests). Many efforts have been made in order to find reliable and relevant alternatives methods to eye irritation testing. 3-D in vitro technology allows the evaluation of chemicals in conditions similar to in vivo use. In this study, we have used the SkinEthic Human Corne...
Using Census Public Use Micro Sample (PUMS) data for 1980, 1990 and 2000, this paper documents a little-noticed feature of U.S. labor markets—that there is wide variation in the labor market participation rates and annual work hours of white married women across urban areas. This variation is also large among sub-groups, including women with children and those with different levels of education...
Drawing on individual-level mobility data from Germany between 1996 and 2009, this analysis econometrically investigates the determinants of automobile, public transit, and non-motorized travel against the backdrop of two questions: 1) Does gender play a role in determining the relative use of motor and non-motorized modes? 2) If so, how is this role mitigated or exacerbated by other socioecono...
Reductions in transport and transaction costs are expected to have a major effect on the functioning of food markets in developing countries. For many developing countries, this is a relevant issue as it may have important consequences for the food markets in urban and rural deficit areas. A partial equilibrium model is presented to analyze the effects of reduced costs on cereal price formation...
Focusing on individual motorists in car-owning households in Germany, this analysis econometrically investigates the determinants of automobile travel for non-work service activities against the backdrop of two questions: 1) Does gender play a role in determining the probability of car use and the distance driven? 2) If so, how is this role mitigated or exacerbated by other socioeconomic attrib...
Pyruvate kinase (PKLR) is a critical erythrocyte enzyme that is required for glycolysis and production of ATP. We have shown that Pklr deficiency in mice reduces the severity (reduced parasitemia, increased survival) of blood stage malaria induced by infection with Plasmodium chabaudi AS. Likewise, studies in human erythrocytes infected ex vivo with P. falciparum show that presence of host PK-d...
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