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The density, binding energy and radical distribution function of HTPB/plasticizers blends and binder hydroxyl-terminated polybutadiene, and plasticizer dioctyl sebacate, dioctyl adipate, dibutyl phthalate, dioctylphthalate were calculated by molecular dynamics simulation for evaluating compatibility of HTPB and plasticizers.

为评价端羟基聚丁二烯与增塑剂相容性的优劣,采用分子动力学模拟方法对纯HTPB、增塑剂癸二酸二辛酯、己二酸二辛酯、邻苯二甲酸二丁酯、邻苯二甲酸二辛酯及HTPB与增塑剂组成的共混物的密度、结合能和径向分布函数等进行了计算。

The encapsulated TiO〓 particles by polymer were obtained with soapless emulsion polymerization of methyl methacrylate in water in the presence of the pretreated TiO〓 particles.

一种是用偶联剂钛酸丁酯对亲水性TiO〓粒子进行预处理,钛酸丁酯与TiO〓表面羟基反应,交联到TiO〓粒子表面,使TiO〓粒子表面由亲水性转变为憎水性,改善无机粉体与有机单体的亲合性,再进行TiO〓存在下甲基丙烯酸甲酯的无皂乳液聚合,即可得到TiO〓-PMMA复合粒子:另一种方法是用表面活性剂对TiO〓进行预处理,再进行TiO〓粒子存在下甲基丙烯酸甲酯的无皂乳液聚合,TiO〓粒子表面可形成一层均匀的聚合物膜,提出了包覆机理,指出单体在无机粉体表面发生聚合的关键是预先在粒子表面形成聚合场所,即吸附一层表面活性剂。

Six crystalline substances were isolated from the stem and root of Syzygium buxifoli um and identified as friedelin,βsitosterol,ursolic acid,pomolic acid,oleanolic acid and βdaucosterol..

摘要从赤楠的茎和根部的乙醇提出物中,分离和鉴定了6个化学成分,分别为木栓酮,β谷甾醇,乌苏酸,19α羟基乌苏酸,齐墩果酸和胡萝卜甙。

The results show different impacts of elevated pCO2 on the contents of salicylic acid, p-Hydroxybenzoic acid, cinamic acid, ferulic acid and vanillic acid, as well as phenylalnine ammonialyase activity in winter wheat leaves under low N and normal N levels.

结果表明,CO2浓度升高对小麦叶片水杨酸、对羟基苯甲酸、肉桂酸、阿魏酸和香草酸含量的影响随供氮水平的不同而有所差异。

The results show different impacts of elevated p CO2 on the contents of salicylic acid, p-Hydroxybenzoic acid, cinamic acid, ferulic acid and vanillic acid, as well as phenylalnine ammonialyase activity in winter wheat leaves under low N and normal N levels.

结果表明, CO2浓度升高对小麦叶片水杨酸、对羟基苯甲酸、肉桂酸、阿魏酸和香草酸含量的影响随供氮水平的不同而有所差异。

The environmental black direct dye stuff without carcinogensis was prepared by 4,4'-diamino-dibenzidine-2-sulfonicacid,1-hydroxy-7-aminonaphthalene-3,6-dusuifonicacid,m-benzoic-diamine and aniline.

以4,4'-二氨基-二苯胺-2-磺酸代替苯胺,与1-羟基-7-氨基-3,6-二萘磺酸、间苯二胺、苯胺等合成无致癌作用的环保型黑色直接染料。

The environmental black direct dyestuff without carcinogensis was prepared by 4,4'- diamino - dibenzidine - 2 - sulfonicacid, 1 - hydroxy - 7 - aminonaphthalene - 3,6 - dusuifonicacid, m - benzoic - diamine and aniline.

以4,4'-二氨基-二苯胺-2-磺酸代替苯胺,与1-羟基-7-氨基-3,6-二萘磺酸、间苯二胺、苯胺等合成无致癌作用的环保型黑色直接染料。

Hydroxy praline – The main sources of hydroxyl praline are carrots, lettuce, beetroots, turnips, cucumber, plums, cherries, figs, radishes, grapes, olives, pineapples, almonds and coconut.

羟基脯氨酸-的主要来源羟脯氨酸是胡萝卜,生菜, beetroots ,萝卜,黄瓜,李子,樱桃,无花果,萝卜,葡萄,橄榄,菠萝,杏仁和椰子。

By utilizing three benezenemulticarboxylate derivatives (H2chdc, H2aip, NaH2sip), we obtain 12 coordination polymers. Especially, compelexes 1 and 2 are based on one-dimensional ···OHInOHIn···chains as building units, while complex 3 is based on double four-ring [In8(μ2-O)4(μ2-H2O)8]16+, complex 4 is based on trinuclear In3(μ3-O)(CO2)6, complexes 11 and 12 are both based on nested bistranded helices.

选择了三类取代苯羧酸配体: 2,5-二羟基-1,4-对苯二甲酸(2,5-H2chdc); 5-氨基间苯二甲酸(5-H2aip); 5-磺酸基间苯二甲酸钠盐(5-NaH2sip)和InCl3反应合成了十二个配位化合物:其中1、2以···OHInOHIn···链为构筑单元, 3以双四元环[In8(μ2-O)4(μ2-H2O)8]16+为构筑单元,4以棱柱状三核铟In3(μ3-O)(CO2)6为构筑单元,而11、12以嵌套的双股螺旋链为构筑单元。

An ivestigation on the influence of the ferulic acid and p hydroxybenzoic acid on the nitrogen mineralization in the soil was carried out.

实验研究阿魏酸、对羟基苯甲酸对土壤中的氮矿化的影响,分析了麦秸和麦秸在土中腐解时产生的酚酸与土壤中氮矿化作用的相关性。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

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集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。