甲基剂

Poly(N-isopropylacrylamide-co-2-hydroxyethyl methacrylate)/clay hydrogel was copolymerized with NIPA and HEMA cross-linked by clay to form a new kind of nanocomposite hydrogel P(NIPA-co-HEMA)/clay was obtained.

以无机粘土为交联剂制备了具有温度、pH双重敏感性的聚(N-异丙基丙烯酰胺-co-甲基丙烯酸-β-羟乙酯)/粘土纳米复合水凝胶P(NIPA-co-HEMA/clay，并用红外和X衍射对其结构和形态进行了表征。

The results showed that,through the orthogonal experiments of L9(34) and the single factor experiments of the opuntia and red date juice,the best formula of the compound beverage was 5 to 5,sugar 4%,citric acid 0.03%,and compound stabilizer consisted of 0.2% carboxymethyl cellulose sodium and 0.3% alginate sodium sterilizing temperature was 100 ℃,and sterilizing time was 8～15 minutes.

通过对仙人掌汁和红枣汁配比的单因素试验和L9(34)正交试验结果表明，食用仙人掌红枣复合饮料的最佳工艺配方为：仙人掌红枣复合汁的配比为5∶5，加糖量为4%，加柠檬酸量为0.03%，复合稳定剂加入量为羧甲基纤维素钠0.2%+海藻酸钠0.3%，杀菌温度为100℃，杀菌时间为8～15min。

Whenpyridine was used as reductive decomposing agent, the expecting cholest-4-en-3,6-dione-22-al was obtained. However, when Zn/HOAc was used to decomposethe ozonide, C-4,5 double bond was further reduced to give cholest-3,6-dione-22-al as main product. 2 For the side-chain construction of compound (1), the solid-liquid phase-transfer Wittig reaction was used. When (3-methyl-2-oxobutyl)-triphenylarsonium bromide was used as reagent, the reaction can be carried out inmild reaction condition and the yield is higher than that when phosphorane wasused.

但使用Zn／HOAc作为分解剂时，却得到其氢化产物胆甾-3， 6-二酮-22-醛；2在甾体支链引入过程中，采用固-液相转移Wittig反应的方法，用(3-甲基)-2-氧丁基三苯基溴化胂作为试剂，反应在非常温和的条件下便可完成，而且产率比传统采用膦烷的方法更高；3在对某些甾酮化合物的选择性还原反应研究时，发现在〓还原体系中，当加入某些金属离子后，反应有更好的区域选择性和立体选择性。

During the manufacturing of the critical intermediate cephalosporin nucleus --7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt, first the feasibility of the one-pot synthetic route of open loop, closed loop and ozonization when chlorine is passed over is qualified by experiments. Then the critical factors that will influence this reaction are studied as follows: the mol ratio of triphenyl phosphite and Diphenylmethyl 3-hydroxy-7-phenylacetaminoceph-3-em-4-carboxylate-l-oxide is four to one; the quantity of the stablizer should be at least more than two to one. The temperature of the system must be 25℃ when chlorine is passed over so that the hydrochloride can be precipitated to obtain cephalosporin nucleus of cefaclor--7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt.

在制备关键中间体头孢母核7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐时，先通过实验验证把开环、闭环、臭氧化三步在通入氯气时并为一锅煮的合成路线的可行性之外，又研究了影响该反应的几个重要因素：亚磷酸三苯酯与3-羟基-7-头孢烷-5-亚砜-2-甲酸二苯甲酯的摩尔比为4：1；稳定剂2-甲基-2-丁烯的用量至少大于2：1，通入氯化氢气体时体系温度在25℃时盐酸盐则能够顺利析出，获得头孢克洛的头孢母核—7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐。

The article studied on processing technology of tomato beverage using tomato as material, they did experiment aim to increase juice yield , stability of the beverge and to keep colour. The results indicated juice yield is able to reach 81.5% after preheating, adding pectase , pressure filtering, the processing technology improved the utilization of tomato.

以番茄为原料进行饮料的加工，针对提高番茄出汁率、饮料稳定性、饮料色泽的保持工艺研究实验，结果发现，对番茄预热后，再加果胶酶处理、加压过滤工艺可使番茄的出汁率达到81.5%，提高了番茄的利用率；番茄饮料中添加2‰，质量比5：2：3的羧甲基纤维素钠、黄原胶、琼脂复配增稠剂可使饮料在常温保存三个月仍具有良好的稳定性。

The title anti-fogging coating was prepared from film-forming substance such as UV curing of n-butyl methacrylate,β-hydroxy ethyl acrylate,acrylamide and sodium propenyl alkyl ether hydroxyl sulfonate,and proper solvents, crosslinker s,photoinitiators and additives.

以光敏丙烯酸酯低聚物、甲基丙烯酸丁酯、丙烯酸-β-羟乙酯、丙烯酰胺及丙烯基烷醚羟磺酸钠为主要成膜物质，再配以适量的溶剂、交联剂、光敏剂及各种助剂制成UV固化防雾涂料。

Polymethyl methacrylate is the most used filling materials at present; There is not significant difference between unipedicular and bipedicular vertebroplasty; Using vertebral body venography and appropriate dense bone cement can reduce leakage of bone cement; Bolster for self-replacement can rebound vertebral body height, and balloon kyphoplasty and sky bone expander kyphoplasty can be avoided; In order to reduce refracture of vertebral body, anti-osteoporosis drugs should be used in the treatment of percutaneous vertebroplasty.

聚甲基丙烯酸甲酯是目前最常用的填充物；单侧注射和双侧注射疗效没有明显差别；应用对比剂及掌握合适的骨水泥黏稠度可以减少骨水泥的渗漏率；成形前腰部垫枕自身复位可以恢复椎体的高度，避免采用操作复杂及价格昂贵的球囊后凸成形及骨膨胀椎体后凸成形；进行经皮椎体成形时应该配合应用抗骨质疏松药物，以减少椎体再骨折的发生。

A sol containing SiO_2 particles was prepared by the base catalyzed hydrolysis and polycondensation of tetraethoxysilane through sol-gel process. A solution containing double-chain polymer of methyltriethoxysilane was also prepared under acid condition, as the introducer of water repellence.

通过溶胶-凝胶法，在碱性条件下水解缩聚正硅酸乙酯获得含有SiO2颗粒的溶胶；以甲基三乙氧基硅烷在酸性条件下水解缩聚获得双链聚合物溶液，作为疏水基团的引入剂。

The results showed that under a given delayed coagulant , water retentiveness and cohesive strength of stucco gypsum mixed with modified bentonite were higher than that of methyl cellulose .

试验表明，在缓凝剂掺量一定时，单掺改性膨润土的粉刷石膏加水拌合后，其保水性，强度和黏聚性等各项性能指标，均优于掺有甲基纤维素的粉刷石膏，文中还对保水机理进行了分析。

In the buffer solutions with different pH values the swelling characteristics of hydrogels based on SBCS prepared by cross-linking with glutaraldehyde were studied.

以戊二醛为交联剂制备了 N -(2-磺酸基苯甲基)壳聚糖水凝胶，考察了凝胶在不同pH值缓冲溶液中的溶胀行为。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。