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排序方式: 共有693条查询结果,搜索用时 46 毫秒
81.
FJ Gómez-Pérez VE Valles-Sanchez JC López-Alvarenga R Choza-Romero JJ Ibarra Pascuali R González Orellana OB Pérez Ortiz EG Rodríguez Padilla CA Aguilar Salinas JA Rull 《Canadian Metallurgical Quarterly》1996,48(6):421-424
OBJECTIVE: To examine the effects of vitamin E on total serum protein glycation (fructosamine), hemoglobin glycation (HbA1c), and serum levels of glucose, total cholesterol, triglycerides, LDL-C, HDL-C, apolipoprotein A1 and apolipoprotein B. MATERIAL AND METHODS: Sixty poorly controlled diabetic patients were randomly assigned to receive either 1200 mg/day of vitamin E or identical placebo capsules during a two month period following a double blind cross-over design with a four week wash-out period between regimens. RESULTS: Seven patients were excluded from the study because of reasons not related to the medication. In the remaining 53 patients, the levels of serum glucose, fructosamine, HbA1c, total cholesterol, HDL-C, LDL-C, Apo A1 and Apo B did not vary significantly with vitamin E as compared with placebo. CONCLUSIONS: No significant effects of vitamin E on any of the parameters evaluated were observed in poorly controlled diabetic patients. 相似文献
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A. Séthy ÖVE/GIT VDE/NTG Sen IEEE 《e & i Elektrotechnik und Informationstechnik》1997,114(12):766-766
Ohne Zusammenfassung 相似文献
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A. Zajic ÖVE 《e & i Elektrotechnik und Informationstechnik》1997,114(12):750-756
This paper is a survey on paging, the advantage of paging for the customers and the operators and a comparison with other solutions for mobile communications. It contains figures of the market in Europe and overseas. Another part describes some technical parameters and paging standards, especially the ERMES standard, which was developed in Europa by ETSI. It concludes with an example of a real implementation of the ERMES standard to an paging system. 相似文献
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M. C. Lang ÖVE 《e & i Elektrotechnik und Informationstechnik》1998,115(1):3-9
This paper presents an efficient multiple exchange algorithm for the frequency domain design of digital FIR filters with arbitrary magnitude and phase responses. The designed filters minimize theL 2 norm of the weighted complex frequency domain error function subject to constraints on the resulting magnitude and phase errors. This general design criterion allows for an arbitrary trade-off between complexL 2 approximation and Chebyshev approximation of given magnitude and phase responses. The optimization can be carried out by iteratively solving small quadratic programs. These linearly constrained subproblems can be solved using robust standard software. 相似文献
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VE Archer 《Canadian Metallurgical Quarterly》1997,73(3):530-532