High Oil-absorptive Composites Prepared from Non-woven Fiber and Sponges with 4-tert- butylstyrene-EPDM-divinylbenzene Graft Polymer

4-tert-butylstyrene-EPDM-divinylbenzene graft terpolym-er (PBED) was prepared by graft cross-polymerization in toluene using BPO as an initiator. The gel-PBED and sol-PBED were isolated from extraction of tetrahydrofuran (THF), and then they were identified by IR spectr-oscopy. The maximum oil-absorptivity of gel-PBED produced from the optimum reaction conditions was 8420% but its swelling rate was very low. The highest oil-absorptivity of photocrosslinked sol-PBED film was 5 800%. Although its oil absorbency was not as high as gel-PBED' s, swelling rate was higher than that of gel-PBED and was suitable for commercial purpose. After swelling in oil, neither gel-PBED nor photocrosslinked sol-PBED film having high oil-absorptivity had sufficient mechanical strength to be taken out of oil wholly. As is known, composite technique is one of the useful methods for reinforcing them. Fibers, sponges and non-woven cloths were used as reinforcers or supporters in this work. Oil-absorptivities and swelling kinetics     

Effects of the Water in Mixed Solvent on the Epoxidation Reaction of Propylene with TS-1 Catalyst

The epoxidation reaction of propylene and hydrogen peroxide with zeolite catalyst containing titanium-silicalite (TS-1)has been studied, and the reaction in the mixed solvent of water/methanol has been discussed. It is shown that the selective of epoxidation propylene decreases while the selective of propylene glycol increases, when the water content increases in the mixed solvent of me thanol/water.     

光谱电化学法测准可逆体系电子转移速率常数

采用单电势跃——计时吸收光谱法（ＳＰＳ－ＣＡ）测量了准可逆体系的电子转移速率常数。首先通过测Ｋ３Ｆｅ（ＣＮ）６—Ｋ４Ｆｅ（ＣＮ）６体系的标准速率常数ｋｓ０′，证实了理论公式、实验方法及数据处理的合理性，而后以ＳｎＯ２－Ｉｎ２Ｏ３膜玻璃电极为工作电极，分别测定了亚甲基蓝还原和无色亚甲蓝氧化的电子转移速率常数及该体系的ｋｓ０′，结果较为理想。     

区域观测与地理实在

讨论了地理研究中“观测”与“实在”的性质和联系，针对区域的性质提出了不同的观测方法。     

晶体点缺陷的定向跳跃率和跳离跳跃率

本文区分了晶体点缺陷的定向跳跃率与跳离跳跃率这两个概念,并且由此讨论了点缺陷的运动与复合以及晶体中原子扩散的微观机构,所得理论估算值更接近了实验值。     

Knitting and Finishing of Ramie Knitted Fabrics Blended with Fine Polyester

Ramie fibre is harsh and rigid. Ramie yarns have a hairy feel and reduced cohesion. A considerable amount of research has been done to ease the undesirable properties of ramie products through modifying conditions of knitting and finishing according to the special properties of the ramie yarn. From the comparison results, burning the hairiness is shown as one of the effective methods to bnprove the properties of the yarn. A typical finishing condition with enzyme treatment is also recommended.     

二部图是哈密顿的一个充分条件

使范氏条件在二部图上得到更具体的刻画，得到以下结果：设Ｇ＝（Ｘ，Ｙ；Ｅ）是－连驼的二部图，｜Ｘ｜＝｜Ｙ｜＝ｎ≥２，ｕ，ｖ是Ｇ中不同两顶点，当ｄ（ｕ，）ｖ＝２时，有ｍａｘ（ｄ（ｕ）ｄ（ｖ））〉ｎ／２，则二部图Ｇ为哈 ，并说明该结果是最好的可能。     

Internet的中国延伸与连接策略

系统介绍了国家建立的四大网络系统和Ｉｎｔｅｒｎｅｔ网在中国的延伸，同时也讨论了用户连接Ｉｎｔｅｒｎｅｔ网络的基本方法和策略     

回潮率对织物红外反射性能的影响研究

介绍了含水织物受红外辐照时 ,其回潮率对其表面反射红外辐出度的影响 ,并探讨了不同红外辐射主波长与反射辐出度的关系     

杂多钨酸及其盐对碳钢的缓蚀作用

采用失重法研究了部分杂多化合物在水介质中对碳钢的缓蚀作用。实验结果表明，所研究的１１种杂多化合物对碳钢均具有一定的缓蚀作用。其中，Ｎａ８Ｈ［ＰＷ９Ｏ３４］·ｘＨ２Ｏ和Ｎａ１０［α－ＳｉＷ９Ｏ３４］·ｘＨ２Ｏ等缺位化合物的缓蚀效果较好，它们的最佳缓蚀浓度分别为１０５０～１１５０ｍｇ／Ｌ和５００～６００ｍｇ／Ｌ。从杂多化合物的性质及实验过程所发生的现象推测，所研究的杂多化合物为复合型缓蚀剂