共查询到20条相似文献,搜索用时 8 毫秒
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吴令文 《苏州大学学报(医学版)》1993,9(2):123-127
This paper discusses the function class Hβ(a) of the from f(z)=z ∑k=(n 1)^ ∞, which satisfies the conditon Re[f‘(Z) βzf″(z)]>a, (0≤a<1) in |z|<1, with its inclusion relation ,neighborhood properties and the deviation theorem ,convolution properties in the case when f(z) has negative coefficients. 相似文献
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The blend fibers of acrylonitrile-vinylidene chloride-sodium methallysulfonate copolymer(AN-VDC-SMAS) and cellulose acetate (CA) with various blend ratios were investigated bymeans of SEM, DDV, WAXD, etc. The results show that AN-VDC-SMAS and CA areincompatibale; the numerous microvoids in the blend fiber resulted from the phase seperationcan remarkably improve the water absorbability and the dyeing behavior but hardly influencethe mechanical properties. On the other hand, the crystal structure of the continuous phaseAN-VDC-SMAS is not influnced by the dispersed phase CA. 相似文献
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宋为基 《苏州大学学报(医学版)》1994,10(2):133-138
A effective approximate scheme which is combined by cluster with the discretrzed path-integral representation (DPIR) is used in the study on the random-hand Ising model in a transverse field (RTIM). The critical thennodynamcal properties, such as the critical temperature, the critical, transverse field, the average magnetization, the susceptibility and the special heat etc. , are calculated. And some results have been improved. 相似文献
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Zhiqiang Pang Jiachuan Chen Guihua Yang College of Light Chemistry & Environment Engineering Shandong Institute of Light Industry Jinan China 《天津科技大学学报》2004,19(Z1)
INTRODUCTIONThe populus tomentosa laboratory of Beijing ForestryUniversity Chinese led by professor Zhu zhiti hassuccessfully cultivated the triploid of populustomentosa which is a fast growing cellulose materialbearing international leading level. The triploid ofpopulus tomentosa has got a popularization in northChina for its excellent features of fast growing,anti-disease and highly active. We have carriedthrough the detailed research on its biology structure, lignin distribution in c… 相似文献
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Yuan-yuan Jia School of Material Chemical Engineering Tianjin University of Science Technology 《天津科技大学学报》2004,19(Z2)
1.INTRODUCTIONWheat straw is the main raw material in northern China, and its black liquor is blamed for contributing serious pollution to the environment. A technical breakthrough has been achieved in the field of chemical recovery for wheat straw pulping after more than twenty years' developments and practices. Wheat straw pulp chemical recovery projects with the pulping capacity of 75-100t/d have been put into 132--production gradually in recent years. Evaporation of wheat straw pulp… 相似文献
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