نتایج جستجو برای: 1234
تعداد نتایج: 581 فیلتر نتایج به سال:
By performing experiments on samples as pure as presently available, the origin of the reported pressureinduced Tc values well above 150 K in the mercury-based high-Tc superconductors has been investigated. For HgBa2Ca2Cu3O81y ~Hg-1223! maximum Tc values between 142 K and 146 K are obtained under pressure up to 30 GPa, while for HgBa2Ca3Cu4O101y ~Hg-1234! Tc never exceeds 121 K. To verify the r...
The purpose of this study was to find the circulating microRNAs (miRNAs) co-related with bone loss induced by bed rest, and testify whether the selected miRNAs could reflect the bone mineral status of human after bed-rest. We analyzed plasma miRNA levels of 16 subjects after 45 days of -6° head-down tilt bed rest, which is a reliable model for the simulation of microgravity. We characterize the...
This paper examines the impact of local tax rates and capital market conditions on the level and composition of borrowing by foreign affiliates of American multinational corporations. The evidence indicates that 10 percent higher local tax rates are associated with 2.8 percent higher debt/asset ratios of American-owned affiliates, and that borrowing from related parties is particularly sensitiv...
OBJECTIVES To determine the views and experiences of health and social care professionals on using integrated care pathways (ICPs)for caring for people in the last days to hours of life. METHODS Online cross-sectional questionnaire survey of UK professionals working in UK primary and secondary care settings. RESULTS 1331 professionals returned completed questionnaires. Ninety-three per cent...
This retrospective study assessed the outcome of 603 patients undergoing partial inferior turbinectomies (PIT) in association with Lefort I osteotomy. The study included 1234 patients from a single private practice; these patients had dentofacial deformities and underwent Lefort I osteotomy procedures. For the full patient group, 888 patients (72%) were women; in the turbinectomy group, 403 (67...
We study the location-specific component in research productivity of economics and finance faculty who have ever been affiliated with the top 25 universities in the last three decades. We find that there was a positive effect of being affiliated with an elite university in the 1970s; this effect weakened in the 1980s and disappeared in the 1990s. We decompose this university fixed effect and fi...
We give bijective proofs of pattern-avoidance results for a class of permutations generalizing alternating permutations. The bijections employed include a modified form of the RSK insertion algorithm and recursive bijections based on generating trees. As special cases, we show that the sets A2n(1234) and A2n(2143) are in bijection with standard Young tableaux of shape 〈3〉. Alternating permutati...
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