丙烯酸的

Department of Chemistry; Huazhong University of Science and Technology; Wuhan; Post code : 430074

用红外光谱追踪表明，聚氨酯的生成快于甲基丙烯酸甲酯的聚合。

We used the reported chiral ligand QD-4 derived from quinidine to catalyze the reaction of aldehydes and methyl vinyl ketone in the presence of various additives and found that the highest e.

用喹尼叮衍生物QD-4分别催化醛和丁烯酮以及醛和丙烯酸-萘酚酯的不对称Baylis-Hillman反应，通过改变添加剂和优化反应条件，最终分别取得了最高为49％和70％的e.e值。

IR, SEM and TEM showed that the encapsulation film, which is composed of poly modified by silane, is a dense reticulation with a thickness of 20~30nm.

IR、SEM和TEM测试结果表明，该有机包覆层由硅烷改性的聚甲基丙烯酸甲酯组成，是一种厚度为20~30nm的致密网状膜。

Phonak has worked with one of the leading producers of specialty medical grade UV-curable acrylics to develop and fine-tune 8 different colors of shell materials: Pink, Tan, Cocoa, Brown, Red, Blue, Transparent and White.

峰力公司已与一家专业生产医疗级紫外光固化丙烯酸酯的生产商合作，开发和精调出8个不同颜色的外壳材料：粉色，黄褐色，可可色，棕色，红色，黄色，透明色和白色。

Resin: there are pyroligneous DIN celluiose, especially the mmedium reatriction of polyacrylicester class shrinkproof resin.

树脂类：一般有醋丁纤维素，尤其是相容性受限型的聚丙烯酸酯类的防缩孔树脂。

When SiO〓-NH〓-Rh-Co complex was used to catalyze the hydroformylation of methyl methacrylate, an optimal conversion of 93.4% and optimal selectivity of 84.4% for the normal aldehyde were both obtained at Rh/Co ratio of 2/1, which were both higher than that catalyzed by SiO〓-SiNH〓-Rh and SiO〓-Si-NH〓-Co momometallic catalysts. Clearly a synergistic action between Rh and Co atoms presented in the complex.

我们以SiO〓-Si-NH〓-Rh-Co催化甲基丙烯酸甲酯的醛化反应，当催化剂中Rh/Co比为2/1时，催化活性最高，可达93.4％，对正构产物β-甲酰异丁酸酯的选择性达到84.4％，都高于单金属催化剂，表明了金属间存在相互作用。

Therefore, the linearized equation representing the dependence of Tg on the content of iso-, syndic- and heterotriads can only be used for the PMMA with the same type of stereodiads distribution.

本文研究了聚甲基丙烯酸甲酯的立构规整性与T8的关系，结果表明立构单元分布和含量均对T8有显著影响。

Other standard appointments include figured acrylic trapezoid fingerboard inlays, a corian nut, Gibson's legendary Tune-o-matic bridge and stopbar tailpiece and new quick-connect control pocket assembly.

其他标准任命包括占有丙烯酸梯形键盘芯片，一个可丽耐螺母，吉布森的传奇调整邻马蒂奇桥梁和stopbar附属物和新的快速连接控制口袋大会。

Methods The pH-and enzyme degradation dependent colon-specific coated tablets were prepared by spraying coating method, coated with chitosan and polyacrylic resin, and the release profile of berberine tannate colon-specific coated tablets was determined in the simulated gastrointestinal tract environment.

以壳聚糖和聚丙烯酸树脂为包衣材料，采用喷雾包衣的方法制备pH依赖与酶降解相结合型结肠定位包衣片，并研究包衣片在模拟人体胃肠道环境中的释放情况。

OBJECTIVE:To search after the optimum formulation of the TDS of testosterone.

目的：寻找以聚丙烯酸酯为骨架的睾酮经皮给药系统的最佳处方。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。