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寒冷地区取水工程可能最小径流问题的分析研究
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作者 黎书铨 易越 《水文》 CSCD 北大核心 1997年第5期1-5,共5页
从核电站水文工作的需要出发,探讨了可能最小径流的含义和主要影响因素,提出了水库取水情况下的“月流量组合分析法”等计算可能最小年流量的计算方法和河道取水情况下的“流量分割法”等计算可能最小流量的计算方法,分析了冰期最小... 从核电站水文工作的需要出发,探讨了可能最小径流的含义和主要影响因素,提出了水库取水情况下的“月流量组合分析法”等计算可能最小年流量的计算方法和河道取水情况下的“流量分割法”等计算可能最小流量的计算方法,分析了冰期最小流量与最低水位的不一致性和形成原因,说明了寒冷地区河道取水工程的设计低水位需在年内不同时期低水位分析计算基础上,结合水浸冰厚的影响,才能综合分析确定。 展开更多
关键词 最小径流 最小 低水位 取水工程 设计
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Effect of the Minimum Diameter and Its Relevant Parameters on Wool Quality
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作者 于伟东 《Journal of Donghua University(English Edition)》 EI CAS 2003年第3期11-15,共5页
It is important to measure wool diameter as the wool quality depends on the fibre diameter D and its deviation CVD. According to IWTO standards, the fibre diameter parameters can be tested with the methods of Airflowm... It is important to measure wool diameter as the wool quality depends on the fibre diameter D and its deviation CVD. According to IWTO standards, the fibre diameter parameters can be tested with the methods of Airflowmeter, DA; Sirolan-Laserscan, DL and CVDL; and OFDA, Do and CVDo. However, these parameters only characterize the average diameter and the variation between the fibres. A single fibre analyzer (SIFAN) can be used to measure fibre profile along the fibre and fibre tensile properties simultaneously. The results obtained from the four methods show that there are i) high relationships between Laserscan values and the results of Airflow, OFDA and SIFAN in the average diameters; ii) correlations between CVDL and CVDo or CVDave; iii) the high correlation between Dave-Dmia but a low correlation between Dave-Dmax; and iv) the relationships between the wool quality and the ratio of Dmln/Dave and Dmin/DL. Based on the results and discussions, the effective measurement of wool diameter should be the SIFAN method. The new parameters of Dmin/DL and Dmin/Dave are the useful value for the evaluation of wool quality in practice. 展开更多
关键词 Fibre diameter WOOL AIRFLOW S1FAN OFDA Laserscan
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