甲基剂

In the alkalescence katalyst condition,the aminopolysiloxane emulsion was prepared by used the octamethylcyclotetrasiloxane(D_4) and silane coupling agent(KH-550) emulsion copolymerization.

在碱性催化剂作用下，采用八甲基环四硅氧烷(D4)与硅烷偶联剂γ-氨丙基三乙氧基硅烷(KH-550)乳液共聚制得了氨基聚硅氧烷乳液。

The emulsifiers used were compounded systems composed of anionic and nonionic surfactants. Other conditions such as initiator, reaction temperature, and the amount of MAA also influenced the properties of the latices.

同时，软硬单体比例、具有亲水功能的甲基丙烯酸MAA单体的用量、反应温度和引发剂的用量等对胶乳的粒径和应用后织物的性能都有不同程度的影响。

In this paper, the action mode of NMA in the traditional polyacrylate emulsions was studied by extracting the traditional self-curable PA latex film before curing and comparing the properties of two kinds of model latices A and B. Where model A was prepared according to the traditional self-curable PA latex and the model B was a blend of polyacrylates emulsion and an aqueous solution of poly-NMA. The total proportions of the ingredients were adjusted just the same as of model A. The influences of monomers, the dosages of crosslinking monomer A and emulsifier etc.

文中通过构造&共聚&和共混两个胶乳模型，研究了常规&自交联&PA胶乳中N-羟甲基丙烯酰胺的作用模式；分析讨论低温水性PA胶乳的聚合工艺及影响因素；通过分析胶膜的溶失率、吸水率、力学性质和Tg，及用扫描探针显微镜观察薄膜的微观表面形态和粗糙度的测试，研究水性PA胶乳的成膜性能、稳定性及基本性能；测试并分析胶乳作为涂料印花粘合剂和织物涂层剂的使用性能；通过核壳聚合技术对无甲醛胶乳产品进行性能优化。

Two kinds of cross-linked polyacrylate latices with relatively narrow distribution of particle diameters, which are abbreviated to P and P/P, were synthesized by seeded emulsion co-polymerization, respectively. Butyl acrylate and 2-ethylhexy! acrylate were used as comonomers of ACR core, styrene and methyl methacrylate were employed as comonomers of ACR shell, and 1,4-butanediol diacrylate was used as cross-linking agent.

采用丙烯酸丁酯和丙烯酸2-乙基己酯(2-EHA)为核层单体、苯乙烯和甲基丙烯酸甲酯为壳层单体、1，4-丁二醇二丙烯酸酯为交联剂，通过多步种子乳液聚合方法合成了P、P／P两种具有窄粒径分布的共聚丙烯酸酯胶乳。

The results showed that expression plasmid pET22b-lysB was constructed successfully. Highly purified recombination protein was obtained 33.2 mg from 1 L LB culture medium. A screening for His-LysB activity on esterase and lipase substrates confirmed the lipolytic activity. With p-nitrophenyl butyrate as substrate, the thermal stability of the enzyme was poor when the temperature was above 30oC. The enzyme exhibited higher stability at pH 5.0–9.5. The optimum temperature and pH for the lipolytic activity of His-LysB were 23oC and 7.5 respectively. Under the optimum conditions, the specific activity of His-LysB was 1.3 U/mg. Zn2+, Cu2+, Mg2+, Mn2+and phenylmethane sulfonyl fruoride severely inhibited the lipolytic activity of His-LysB.

结果表明：成功构建了pET22b-lysB表达载体，并从1 L的LB培养物中获得了33.2 mg高纯度重组蛋白；His-LysB具有分解脂肪的能力，属于脂肪酶；生物化学特性分析表明：丁酸对硝基苯为水解底物，His-Lys热稳定性不佳，30℃以下比较稳定，随着温度的升高，稳定性逐渐降低；该蛋白具有较高的pH值适应性，pH 5.0~9.5范围内稳定性较高；在23℃和pH 7.5时酶活力最高，其比酶活为1.3 U/mg；金属离子Zn2+、Cu2+、Mg2+、Mn2+和苯甲基磺酰氟抑制剂对酶活具有强烈的抑制作用。

Models of K562 cells inducing differentiation to lineages of megakaryocyte, erythrocyte and macrophagocyte were established with inducers TPA (tetradecanoylphorbol 13-acetate), Hu and HMBA respectively.

用Western blot检测以十四烷酸佛波醇-13－乙酯(tetradecanoylphorbol 13-acetate， TPA)、羟基脲(hydooxyurea， Hu)及六甲基双乙酰胺(hexamethylene bisacetamide， HMBA)为诱导剂分别诱导K562细胞向巨核细胞系、红细胞系及巨噬细胞系分化时bcl-6表达变化，用PCR、克隆、直接DNA测序方法分析bcl-6基因5'调控区序列变异情况。

Silver nanoparticles with average particle size ranging from 2 to 131nm were manipulatively synthesized starting from silver nitrate using 10 kinds of different functional group-containing organic modifiers, such as polyvinylpyrrolidone, tween-80, sodium dodecyl sulfate, sodium polyacrylate, polyethylene glycol, D-sorbitol, sodium dodecyl sulfonate, sodium dodecylbenzene sulfonate, polyvinyl alcohol, cetyltrimethylammonium bromide, at room temperature.

摘 要：选择10种含有不同官能团的有机物为表面修饰剂，如聚乙烯吡咯烷酮、吐温-80、十二烷基硫酸钠、聚丙烯酸钠、聚乙二醇、山梨醇、十二烷基磺酸钠、聚乙烯醇、十二烷基苯磺酸钠和十六烷基三甲基溴化铵等，在室温下进行了平均粒径在2～131nm范围内纳米银颗粒的控制合成研究。

The inhibitory effect of GABA could be blocked by GABAAreceptor antagonist bicuculline bicuculline methiodide and Cl- channel blocker picrotokin.

GABA的抑制效应大部分可被GABAA受体选择性拮抗剂荷苞牡丹碱甲基碘化物和Cl-通道阻断剂印防己毒素所阻断，而单独灌流BMI和PTX对RVLM神经元主要起兴奋作用。

In this article,preparation of Ag-based activated-Carbon ,comparing its absorption capacity of different concentration methylic orange and COD.

制备载银活性炭，比较载银活性炭对不同浓度甲基橙溶液和COD的吸附量，可以作为污水处理的吸附剂，用于城市污水的深度处理或是微污染水的二级处理等领域。

If 3 hydroxide are methylic,is agent of cross-linking of research cellulose fiber recently 3 get together cyanogen amine or 1, 2, 3, 4, butane 4 formic acid and hydroxyl are luscious the combination of organic phosphor oligomer should...

最近有探究纤维素纤维交联剂如三羟甲基三聚氰胺或1，2，3，4—丁烷四甲酸和羟基官能有机磷低聚物的联合应。。。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。