25 research outputs found

    Permeation Studies on Binary Liquid Mixtures of Acetone with Benzene & Chloroform

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    Seasonal and spatial variations in demand for and elasticities of fish products in the United States

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    Seasonally and spatially varying demand elasticities would provide important information to seafood producers and marketers as well as policy makers. We analyzed the effects of season and space on (i) demand (translation effects) and (ii) price as well as expenditure elasticities of demand (scaling effects) for 13 finfish species in the United States. The paper used market-level scanner data for 52 U.S. markets. Results suggest that not only the quantity demanded, but also the demand elasticities vary across species, seasons, and geography; not only does the degree of competition among finfish products vary considerably over space, but substituting products themselves change. These results highlight the importance of studying consumer demand behavior at species level, across seasons and geography, particularly as it sheds important light on some important policy issues such as the potential substitution between catfish and tilapia in the U.S. markets. Des élasticités de la demande de fruits de mer déterminées en fonction des périodes et des endroits fourniraient de l'information importante aux producteurs et aux commerçants de ces produits ainsi qu'aux responsables des orientations politiques. Dans le présent article, nous avons analysé les répercussions des périodes et des endroits sur (i) la demande (ajustement via l'ordonnée de chaque équation), (ii) le prix, ainsi que sur l’élasticité de la demande par rapport aux dépenses (ajustement via une normalisation des prix) de 13 espèces de poissons à nageoires aux États-Unis. Nous avons utilisé les données scanographiques relevées auprès de 52 marchés aux États-Unis. Nos résultats autorisent à penser que la quantité demandée de même que l’élasticité de la demande varient selon les espèces, les périodes et les endroits. Le degré de concurrence entre les produits de poissons à nageoires varie considérablement par rapport aux endroits, mais les produits de substitution changent aussi. Nos résultats font ressortir l'importance d’étudier le comportement du consommateur et la demande selon les espèces, les périodes et les endroits, particulièrement parce qu'ils apportent des éclaircissements sur des enjeux politiques importants tels que la substitution possible entre la barbue de rivière et le tilapia sur les marchés aux États-Unis. </br

    Cross-phenomenological coefficients. XI. Nonlinear transport equations

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    Studies on electroosmotic and electrophoretic behavior of cholesterol in aqueous solutions

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    Electrical properties of cholesterol interfaces have been investigated. For this purpose electroosmotic and hydrodynamic permeation of water, sodium chloride, barium chloride, aluminum chloride, and urea solutions across a cholesterol plug have been investigated. Dependence of electroosmotic permeability on concentration of electrolytes has also been studied. Electrophoretic mobility of cholesterol particles of known size distribution and dispersed in solutions of varying concentrations of electrolytes and urea has also been studied. The data have been used to estimate ζ potentials in order to have a plausible picture of the electrical double layer at the cholesterol/solution interfaces

    Superior Outcomes and Reduced Wait Times in Pediatric Recipients of Living Donor Liver Transplantation

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    Background. Living donor liver transplantation (LDLT) is increasingly used to bridge the gap between the current supply and demand imbalance for deceased donor organs to provide lifesaving liver transplantation. Methods. Outcomes of 135 children who underwent LDLT were compared with 158 recipients of deceased donor liver transplantation (DDLT) at the largest pediatric liver transplant program in Canada. Results. Recipients of LDLT were significantly younger than deceased donor recipients (P ≤ 0.001), less likely to require dialysis pretransplant (P < 0.002) and had shorter wait time duration when the primary indication was cholestatic liver disease (P = 0.003). The LDLT donors were either related genetically or emotionally (79%), or unrelated (21%) to the pediatric recipients. One-, 5-, and 10-year patient survival rates were significantly higher in LDLT (97%, 94%, and 94%) compared with DDLT (92%, 87%, and 80%; log-rank P = 0.02) recipients, as were graft survival rates (96%, 93%, and 93% for LDLT versus 89%, 81.4%, and 70%, respectively, for DDLT; log-rank P = 0.001). Medical and surgical complications were not statistically different between groups. Graft failure was higher in recipients of DDLT (odds ratio, 2.60; 95% confidence interval, 1.02, 6.58) than in the LDLT group after adjustment for clinical characteristics and propensity score. Conclusions. Living donor liver transplantation provides superior outcomes for children and is an excellent and effective strategy to increase the chances of receiving a liver transplant
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