查询词典 sodium

Using refined cotton, chloroacetic acid, sodium hydroxide and hydrogen peroxide as main feedstock, sodium carboxymethyl cellulose was made by the process of basification, etherification, abstersion and drying.

以精制棉、氯乙酸、氢氧化钠和过氧化氢为原料，经过碱化、醚化、洗涤、干燥，制得羧甲基纤维素钠。

The strain could denitrify sodium nitrate in aerobic environment and nitrify in the culture media with sodium acetate as carbon source and ammonium sulfate as nitrogen source , as well as acetamide as the sole carbon and nitrogen sources .

该菌株以硝酸钠为氮源时能进行好氧反硝化作用；以乙酸钠和硫酸铵分别为碳源和氮源能进行异养硝化作用，能以乙酰胺为唯一碳源和氮源进行生长。

We learn that sodium or any of its compounds produces a spectrum having a bright yellow double line by noticing that there is no such line in the spectrum of light when sodium is not present, but that if the smallest quantity of sodium be thrown into the flame or other souces of light, the bight yellow line instantly appears.

当我们把很少的一点钠投入火焰或其它光源中时，我们会立刻看到光谱中出现一条鲜黄色的双线；当钠不存在时，光谱中的这条线也就消失了。由此我们知道，钠或任何钠的化合物所产生的光谱都带有一条鲜黄色的双线。

The thesis are divided into two parts. In the first part, we used 2,4,6-trichloro-1,3,5-triazine as the precursor to react with sodium which have been achieved by decomposing sodium hydrate at 623 K. At a low reaction temperature of 623 K, carbon nitride nanosphere、porous carbon nitride material and byproduct sodium chloride, would be produced.

本研究将分成两部份，第一部分是在低温下(623 K)将氢化钠粉末热裂解，生成表面积较大的熔融态金属钠，使气态的氰尿醯氯通入与熔融态金属钠在623 K反应，生成奈米氮化碳球、奈米孔洞性氮化碳材料及副产物氯化钠。

Under the experimental conditions, alum, alum/sodium silicate, sodium silicate/hydrochloric acid, zinc chloride, and sodium silicate/zinc chloride are effective to inhibit the dissolution of precipitated calcium carbonate in distilled water with pH value 5.85, and the pH values of the suspensions decrease.

硫酸铝、氯化锌、硅酸钠/稀盐酸可对PCC在pH值为5.95的醋酸/醋酸钠缓冲溶液中的溶解性产生较弱的抑制作用，硅酸钠/氯化锌的溶解抑制作用相对较为显著，滤液钙离子浓度可降低30％左右。

In this paper, using sodium acetate, sodium propionate and sodium butyrate as the unique carbon source, 5 58%、3 90% and 4 98% PHAs of dry sludge weight were obtained by assimilated sludge as PHAs synthesis strai...

实验表明，污泥微生物里广泛存在PHAs合成菌，厌氧条件比好氧条件的PHAs产率要高；最佳的实验条件下得到PHAs的量占污泥干重的 1 2 3 2 %，此时碳源转化率为 3 0 65 %。

In NF animals, the food intake was significantly lower than control animals in the period of 3h and 6h after infusion of sodium propionate, in the 3h infused with low concentration sodium acetate (1M), and in all of stages infused with high concentration sodium acetate (2M).

灌注VFA盐后血浆胰岛素水平均显著性升高，丙酸钠灌注组升高的程度又显著性高于乙酸钠灌注组，在3小时时，丙酸钠灌注组胰岛素水平迅速下降到灌注前的水平，而乙酸钠灌注组胰岛素的水平却仍然保持在高于对照组的水平，但统计不显著。

For sodium acetate, sodium propionate and sodium lactate, the corresponding dechlorination rates were increased to 0.0881d〓, 0.1023 d〓 and 0.0917d〓 respectively.

并且外加碳源以电子供体和能源的角色，使p，p'-DDT在辽河沉积物中发生了共代谢，使其缺氧降解速率常数分别提高到k〓=0.0881d〓、k〓=0.1023d〓和k〓=0.0917d

With the existence of additional carbon sources, sodium lactate, sodium propionate or sodium acetate, the faster pH rised, the faster p, p'-DDT dechlorinated, which indicate that the existence of short chain organic substrate supplies sufficient electron donors for the dechlorination process, and p, p'-DDT can obtain electrons more easily during the stage of pH rising.

并且由于p，p'-DDT的还原脱氯与细胞色素氧化酶及辅基FAD有关，外加碳源下p，p'-DDT的缺氧降解多数发生在体系pH值上升的阶段，且pH值上升较快时对应的p，p'-DDT缺氧降解较快，而在无外加碳源的体系中，由于可供p，p'-DDT还原脱氯的电子量限制了p，p'-DDT还原脱氯的速度，未发现上述现象。

Glycidyl benzoate,glycidyl propionate,glycidyl acetate were obtained respectly through a phase-transfer catalytic methodology using sodium benzoate, sodium propionate, sodium acetate and epichlorohydrin as raw materials, and pure products were obtained though vaccum distillation.β-cyclodextrin and glycidyl benzoate, glycidyl propionate, glycidyl acetate, reacted in organic solvent and goal product were

先以苯甲酸钠、乙酸钠、丙酸钠和环氧氯丙烷为原料在相转移催化剂的作用下分别合成了苯甲酸缩水甘油酯、乙酸缩水甘油酯和丙酸缩水酯，经过减压蒸馏，得到相应的纯品；β-环糊精和苯甲酸缩水甘油酯、乙酸缩水甘油酯、丙酸缩水甘油酯在有机溶剂中反应，经过硅胶色谱柱分离，得到了相应的产品，产品经过TLC、IR、1H NMR、MS表征，并研究了温度、反应时间、催化剂等几个因素对反应工艺的影响，结果表明温度和催化剂对反应的快慢有较大影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。