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The results indicate that the imprinted polymers synthesized by methacrylic acid as functional monomer exhibite the best regioselectivity, yielding up to 49.6% pare and 44.1% ortho isomer of nitrotoluene.

结果显示分子印迹聚合物提高了甲苯的对位选择性硝化能力，并且以甲基丙烯酸为功能单体的分子印迹聚合物的对位选择性最好，邻对比为0.89。

Our results showed that the rhM-CSF (1-149aa) recovered from hemolymph was in its biologically active monomeric form. There are three evidence:(1) The SDS-PAGE patterns were identical under reducing and nonreducing conditions.(2) Colorimetric quantitation using Ellman's Reagent showed the existence of around one free Cystein residue per monomeric rhM-CSF.(3) The alkylated rhM-CSF monomer was biologically active although its activity was slightly lower than that of native rhM-CSF.

我们的研究发现从家蚕血淋巴中分离纯化的rhM-CSF是以单体活性形式存在，其在还原和非还原条件下的电泳行为完全相同，Ellman′s试剂测定游离巯基含量发现，每个rhM-CSF分子含有一个-SH，将该rhM-CSF进行烷基化反应后，仍具有生物活性。

The key factors affecting the polymer intrinsic viscosity were found to be monomer recrystallization times,stannous octoate concentration and polymerization time.

单体重结晶次数、辛酸亚锡浓度、聚合时间等条件均是影响聚合物特性粘数的重要因素。

The PDLLA with a viscosity average molecular weight beyond 20×10~4 was obtained under the optimum synthesis conditions of the lactide after being recrystallized 4 times as the monomer,the vacuum level of 0.098 MPa,reaction temperature of 150-160 ℃,reaction time of 6-8 h,and using 0.1%-0.18% stannous octoate as catalyst.

实验结果表明，重结晶4次后的丙交酯作为单体，在辛酸亚锡摩尔分数为0.1%—0.18%，真空度0.098 MPa，聚合温度150—160℃下聚合6—8 h可获得粘均相对分子质量Mη大于20×104的聚D，L-丙交酯。

In 2000, Nishida et al synthesized the PPDO whose molecular weight could reach 142,000 but the monomer conversion could only reach 79.4% by using stannous octoate as catalyst with co-initiator under conditions that T = 100oC, M/I = 4900, t = 20 h, in 2000, the enzymatic polymerization of PDO was carried out at 100oC for 15 hours using 5wt% immobilized lipase CA by Nishida et al.

这主要是因为PDO的结构相对稳定，开环聚合要比GA、LA、CL困难一些，而且用于PDO开环聚合的催化剂体系单一，主要集中在Ti， Zr， Sn， Ld， La， Yb， Hg等重金属，然而这些重金属作为副产物，不容易从PPDO中分离出来，阻碍了PPDO作为医用材料的应用，这也造成了PPDO的成本昂贵。

Inside benzene or toluene solvent, in the presence of stannous octoate as catalyst and under the conditions of no water, no oxygen, heating and stirring, MPEG and aliphatic cyclic monomer are ring-opening polymerized to obtain binary block MPEG-aliphatic polyester copolymer.

聚乙二醇单甲醚和脂肪族环酯单体，在苯或甲苯溶剂中，在无水无氧，加热和搅拌的条件下，用辛酸亚锡为催化剂，开环聚合得到聚乙二醇单甲醚-脂肪族聚酯二嵌段共聚物。

In this paper,the monomers including St and BA with strong waterproof property were employed to modify the traditional PVAc emulsion,and meanwhile draw into DAAM functional monomer in the copolymer system,will prepare out cross linking copolymer emulsion for ADH to improve the waterproof,oilproof and dry/wet mechanical property of fuel oil filter paper.

采用具有较强抗水性的苯乙烯、丙烯酸丁酯等单体对传统聚醋酸乙烯酯乳液进行共聚改性，并在共聚体系中引入双丙酮丙烯酰胺功能单体，制备出可通过外加己二酸二酰肼交联的外交联醋丙共聚乳液，以期提高燃油滤纸的耐水、耐油性和干湿态的力学性能。

In embodiments where the thermally reactive liquid monomer contains an activated olefinic group a preferred means of cross-linking and solidification is by the additional incorporation of a thermal radical initiator into the carrier vehicle.

在体现在液体的热反应活性单体含有烯组交叉的首选方式，联系和凝固成承运人的车辆，一个额外的热引发剂结合。

For thermally curable etch-resist inks comprising an activated olefinic group the activated olefinic monomer preferably contains a metal chelating group.

对于热固化刻蚀抵制油墨组成一组激活烯烯单体的活性最好包含一个金属螯合组。

In this article, star-high vinyl content polybutadiene was prepared using a multi-functional organolithium anionic initiator by " one-step " process. On the basis of 250ml glassware experiment ,we improved the experiment in 2L metal kettle. The polymerization condition was got as follows: polymerization temperature : 50-60 ℃, monomer content : 8-llg/100ml, polymerization time : 3~4 hours.Chracterizations were carried out by 'H-NMR, IR and GPC.

本文首次采用多官能团有机锂引发剂一步法合成出了星型高乙烯基聚丁二烯，在250ml玻璃瓶的基础上，进行2L金属斧的扩大实验，确定了以下聚合工艺参数：聚合反应温度：50～60℃，单体浓度：8～11g／100ml，聚合反应时间：3～4小时。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新