甲基纤维素

The factors such as boric acid concentration and pH,influencing formation of complex of HPMC and glucose were studied.

研究了硼酸浓度和pH值对葡萄糖-羟丙基甲基纤维素体系分离性能的影响；并将葡萄糖与其它添加剂如甘油、甘露醇对分离的影响作了比较，葡萄糖特有的环状结构使得其对羟丙基甲基纤维素体系分离能力的提高更为显著。

Finally, the guideline for efficiently preparing core-shell structured capsule carrier was tentatively proposed.The cationic, neutral and anionic polysaccharides were separately acted as the liquid core of biomimetic capsule by mimicking the component and function of cell sap. It was found that the electrostatic repulsion interaction between the polysaccharide core and the enzyme enhanced the enzyme activity and stability.

首先，模仿细胞液的成分和功能选用三种具有不同电性的多糖(羧甲基纤维素钠、甲基纤维素和羧甲基壳聚糖钠)作为仿生微囊的液核，经比较可知，与酶分子具有静电排斥作用的多糖更有利于酶构象、活力的维持和酶稳定性的提高；然后，模仿细胞膜的结构和功能构建仿生微囊的壳膜。

In this study,the influence of mass fraction of three common dispersants MC,CMC(carboxy methyl cellulose sodium) and HEC on the dispersion of short carbon fibers in water was investigated prior to the manufacture of CFRC.

该研究探讨了制备CFRC前期阶段碳纤维分散这一关键环节中，甲基纤维素、羧甲基纤维素钠、羟乙基纤维素3种常用分散剂的质量分数对短碳纤维在其水溶液中分散性的影响；分析了一定温度下分散剂质量分数和溶液黏度的关系；从纤维素结构出发，解释了不同分散剂的分散效果。

In this research, the activities of CWDE were measured by saccharifying according to the theory that red-brown amino compounds were produced when 3, 5-dinitro salicylic acid and aldehyde were heated together. And the testing conditions were made clear. The activity of Cx should be tested with optimal temperature of 50℃, optimal pH of 4.8, incubation time of 30 min, and optimal substrate of 0.6% CMC-Na. Due to the heat-libality, Cx should be sterilized more than 10 min. The testing conditions of the activity ofβ-G were almost the same with Cx except the substrate of 0.5% salicin and the sterilization time of more than 15 min.

主要取得了一下成果：(1)明确了条锈菌细胞壁降解酶活性测定的条件：羧甲基纤维素酶活性的测定条件为50℃，pH4.8，反应时间30min，底物浓度为0.6%羧甲基纤维素钠，以DNS法测定，且失活酶液的灭活时间应大于10min；β-葡萄糖苷酶活性的测定条件为：50℃，pH4.8，反应时间30min，底物浓度为0.5%水杨苷，以DNS法测定，且失活酶液的灭活时间应大于15min；果胶酶活性的测定条件为：50℃，pH4.8，反应时间1h，底物浓度为0.25%果胶，以DNS法测定，且失活酶液的灭活时间应大于10min。

The phase transition behavior of 2,3-O-MC inaqueous solution was studied in terms of DS value, concentration and molecularweight.

甲基纤维素和羧甲基纤维素在水中的溶解与取代基在纤维素链和葡萄糖残基上的分布有关。

Fixation of direct dyes with silica gel ;2. Taking advantage of proof salt and high hydrophilic property of the silica gel and the carboxymethyl cellulose inarch polysalt of the super water-absorbent resin recombination,this paper made use of the water-absorbent composite form the inorganic polymer, sequentially advanced water-absorbent velocity and capacity of polymer water-absorbent resin in the brine.

利用具有良好耐盐和高亲水性能的硅凝胶与羧甲基纤维素接枝聚丙烯酸盐的高吸水树脂进行复合，制备出无机高分子的硅凝胶-羧甲基纤维素接枝聚丙烯酸盐耐盐高吸水复合材料，从而提高了高分子吸水树脂在盐水中的吸收能力及吸收速度，研究了复合材料的吸盐水性能，通过扫描电子显微镜观察了复合材料表面的微观结构，初步探讨了硅凝胶-羧甲基纤维素接枝聚丙烯酸盐耐盐高吸水复合材料的吸盐水机理。

MC and HPMC are both non-ionic,and etherified products of cellulose.They have functions such as thickening,emulsionizing,filming,water-maintaining,colloid-protecting,bonding,antienzyming,metabotic indifference and so on.They are applied widely in the fields of building,milkness paint,medcine,PVC,chemical articles,ceramics and agriculture.

甲基纤维素和羟丙基甲基纤维素均属非离子纤维素醚，是纤维素的醚化产品，具有优良的增稠、乳化、成膜、保护胶体、保持水份、粘合、抗酶以及代谢惰性等性能，广泛应用于建筑、乳胶涂料、医药、PVC、日用化学品、陶瓷以及农业生产中。

The company mainly produces methyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose replace high and so on.

公司主要生产甲基纤维素、羟丙基甲基纤维素、高取代羟丙基纤维素等。

The company mainly produces methyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose to replace the high- and so on.

公司主要生产甲基纤维素、羟丙基甲基纤维素、高取代羟丙基纤维素等。

Because a part of hydroxyl group in methyl cellulose were substituted by trimethylsilyl group , the product could be dissolved in amounts of common organic solvents, such as chloroform, xylene and so on.

通过甲基纤维素与六甲基二硅亚胺的反应，成功地实现了对水溶性物质甲基纤维素醚三甲基硅化的改性；红外光谱验证了反应的发生，核磁共振氢谱确定了三甲基硅甲基纤维素的取代度；纤维素醚上的部分羟基被三甲基硅化后取得了在普通溶剂中的良好的溶解性，且随着取代度的增加，在非极性溶剂中的溶解性逐渐变好；通过热失重实验，对其热稳定性进行了测试。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。