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排序方式: 共有487条查询结果,搜索用时 15 毫秒
11.
V. E. Geller 《Fibre Chemistry》2001,33(5):353-363
Theoretical and technological aspects of orientational strengthening of polyester fibres are examined. High strength of polyester fibres is attained by the combination of the high molecular weight of poly(ethylene terephthalate) with stage-wise (in several stages) drawing. Current schemes for production of high-strength polyester fibres are reported. 相似文献
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John?W.?GoodrumEmail author Daniel?P.?Geller Thomas?T.?Adams 《Journal of the American Oil Chemists' Society》2002,79(10):961-964
The rheological properties of yellow grease and poultry fat and their liquid density at 25.0°C were experimentally determined.
Dynamic viscosities of these industrial recycled fat products were measured for shear rates of 0.65 to 32.34 s−1 at temperatures of 15.6 to 71.1°C. The resulting measurements were fitted to a power law model to obtain values for the consistency
coefficient and the flow behavior index. The data was also fit to Andrade's equation to relate viscosity to temperature. These
results indicated pseudoplastic flow behavior for both products, with increasing non-Newtonian behavior at higher temperatures
and shear rates. 相似文献
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V. N. Khalaidzhi V. Z. Geller G. V. Zaporozhan 《Journal of Engineering Physics and Thermophysics》1988,55(4):1146-1149
A method for calculating and predicting the coefficients of thermal conductivity and viscosity of pure substances and two- or multicomponent mixtures has been developed on the basis of the single-parameter law of the corresponding states.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 55, No. 4, pp. 620–624, October, 1988. 相似文献
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MJ Camp JR Wingard CE Gilmore LS Lin SP Dix TG Davidson RB Geller 《Canadian Metallurgical Quarterly》1998,42(12):3103-3106
This study evaluated the efficacy of low-dose dopamine for prevention of amphotericin B-induced nephrotoxicity in autologous bone marrow transplant and leukemia patients. Seventy-one patients undergoing cytoreductive therapy who required amphotericin B were randomly assigned in an unblinded fashion to a group receiving continuous-infusion low-dose dopamine (3 microgram/kg/min) or a group receiving no dopamine. Amphotericin B was dosed at 0.5 or 1.0 mg/kg/day based on computerized tomography scan results or presence of positive blood cultures. No patient received saline boluses. The rate of nephrotoxicity, severity as graded by Southwest Oncology Group toxicity criteria, and time to each grade of nephrotoxicity were compared between the two groups. Eighty percent of the no-dopamine group and 66.7% of the dopamine group developed nephrotoxicity, defined as a 1.5-fold or greater increase in baseline serum creatinine level (P = 0.20). No statistical difference was noted at any grade of nephrotoxicity between the two groups. Thirty-four percent of patients in the no-dopamine group versus 17.6% in the dopamine group had a 2.5-fold or greater increase in serum creatinine level, which was not statistically significant (P = 0.0888). Ten patients developed grade IV nephrotoxicity and were withdrawn from the study, 7 in the no-dopamine group and 3 in the dopamine group (P = 0.19). The time to each grade of nephrotoxicity was also not significantly different for the two groups. Eleven adverse drug reactions were reported in the dopamine group in comparison to one in the no-dopamine group. Thus, dopamine offers little in the way of prevention of nephrotoxicity associated with amphotericin B therapy. Although the significance of drug reactions in the dopamine group is not clearly established due to lack of cardiac monitoring in the no-dopamine group, dopamine therapy is not without complications. 相似文献
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