甲基剂

Because of its nonpoisonous, DMC can substitute phosgene , dimethyl sulfate or methylating used as methyl pharmaceutical to improve the security of production and reduce the environmental pollution; As the solvent, DMC can substitute fluorine lyons , methyl chloroform , trichloroethylene , benzene , dimethylbenzene, etc.. And it can be used as the paint dope, clean solvent. As gasoline additive, DMC can raise hard octane value and oxygen content and improve its antiknock possibility.

由于DMC无毒，可替代剧毒的光气、硫酸二甲酯等作为甲基化剂或羰基化剂使用，提高生产操作的安全性，降低环境污染；作为溶剂，DMC可替代氟里昂、三氯乙烷、三氯乙烯、苯、二甲苯等用于油漆涂料、清洁溶剂等；作为汽油添加剂，DMC可提高其辛烷值和含氧量，进而提高其抗爆性。

PGA and CMC-Na (FH-9) were the chosen stabilizers. Based on the orthogonal experiment,the optimum added amount of stabilizers and homogenizing and sterilization parameters wereobtained. The results indicated that the best formula of this kind of fermented soybean drink withthe greatest stability were: 0.4% of CMC-Na(FH-9),0.2% of PGA, 0.067% of MG and 0.083%ofSE, homogenizing twice under 40℃,30MPa and pasteurizing twice under 80℃ for 20min. Thesensory ,physical, chemical and microorganism target of fermented soybean drink were studiedand conformed to the Chinese Standards.

对发酵纯豆乳饮料的调配工艺和稳定性进行了研究，选出对提高酸豆乳饮料稳定性有良好作用的稳定剂配方为羧甲基纤维素钠FH-90.4%、藻酸丙二醇酯0.2%，乳化剂为单甘酯0.067%和蔗糖酯(SE-15)0.083%，确定了最佳均质条件为30MPa 40℃二次均质，杀菌条件为80℃20min的两次常压杀菌，并测定了纯酸豆乳饮料的感官、理化和微生物指标。

The grafting copolymerization of 2-Acrylamido-2-methyl propane sulfonic acid onto soybean protein isolate was carried out in 8 mol/L urea aqueous solution with ammonium persulphate as initiator and β-mercaptoethanol as protein unfolding agent.

以亲水2-丙烯酰胺基-2-甲基丙磺酸为接枝单体、过硫酸铵为引发剂、β-巯基乙醇为大豆分离蛋白的变性剂，在8mol/L的尿素溶液中对SPI进行接枝共聚改性。

The results suggested that the reaction temperature, the ratio of oil to water, the amount of ethyl cellulose as dispersant, initial monomers composition, the drop manner and the amount of initiator, the stirring speed, the pH of the buffer and the elution process have great influence on the morphology such as diameter of the hydrogel beads.

研究结果表明，采用反相悬浮聚合法，以丙烯酰胺和N-乙烯基吡咯烷酮为共聚单体，N，N'-亚甲基双丙烯酰胺为交联剂，牛血清白蛋白为模板，可以制备BSA印迹共聚物微球；反应温度、水油比、乙基纤维素分散剂用量、初始共聚单体配比、引发剂用量和加入方式、搅拌速度、水相pH值以及后续洗脱条件等均对粒径等微球结构和形态产生明显影响。

A novel guar gum-g-poly superabsorbent was synthesized by the solution copolymerization between natural guar gum and acrylic acid using ammonium persulfate as an initiator and N,N′-methylenebisacrylamide as a crosslinker.

以天然瓜尔胶和丙烯酸为原料，过硫酸铵为引发剂，N，N′-亚甲基双丙烯酰胺为交联剂，采用水溶液聚合法制备了瓜尔胶接枝聚丙烯酸高吸水性树脂。

Meldrum is a carboxyl-phthalocyanine weak resistance agent, with the activity of this enzyme metal ion (Mg2 + Mg2 +) formed fairly stable chelate, and its derivatives benzene methyl malonic acid is a strong resistance agent.

丙二酸是一个羧基酞酶的弱阻化剂，它与这种酶的活性金属离子(镁离子Mg2+)形成相当稳定的螯合物，而它的衍生物苯甲基丙二酸则是一个强阻化剂。

Effect of these thickeners on scrubbing resistance of lates paint was studied.

选用了羧甲基纤维素钠、聚乙烯醇缩甲醛胶粘剂、乳液型商品增稠剂和膨润土，研究了这些增稠剂对乳胶漆耐擦洗性的影响。

High absorption and retentions clinoptilolite /Starch/ PAANa composite was synthesized by water-solution copolymerization with clinoptilolite and acrylic acid as principal raw materials,with N N-methylene-bis-acrylamideand as crosslinker, and with potassium persulphate as initiator .

以丙烯酸、斜发沸石为主要原料，以N，N'-亚甲基双丙烯酰胺为交联剂、过硫酸钾为引发剂，采用水溶液聚合法合成了斜发沸石/淀粉/聚丙烯酸高吸水保水性复合材料。

Toxicities of methanol, propylene glycol and n, n-dimethylformamide were lower than the others when sea perch and Japanese flounder embryos were exposed to 6 cryoprotectents, respectively.

鲈鱼尾芽期胚胎在十种稀释液中分别处理后，DS1组的胚胎成活率最高(95％)，与海水对照组没有显著差异。鲈鱼和牙鲆胚胎单一抗冻剂的毒性实验结果表明，甲醇、1，2-丙二醇和二甲基甲酰胺的毒性低于其它三种抗冻剂的毒性。

In view of the problems of agglomeration and alcohol volatility exist in field application of phenolic resin cross linking agents containing alcohol used for profile control on high-temperature reservoir, experimental research is conducted on moving gel integrating technologies, formula composition, gelling time, effects of thermal stability. Therefore, KD-4 profile control formula, which takes water soluble pre-polymerization resin cross linking agent with methylolation as its main body.

针对中高温油藏调驱中使用的含醇类酚醛树脂类交联剂在现场应用中存在结块、醇的挥发性等问题，开展了可动凝胶合成技术、配方组成、成胶时间、热稳定性考察等试验研究，形成了以全水溶、高羟甲基化的预聚树脂交联剂为主体的KD-4型调驱体系配方。

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。