查询词典 hydrogen

A new method was investigated of in-situ synthesizing starch grafted sodium acrylate as thickening agent for disodium hydrogen phosphate dodecahydrates.

实验证明该方法是有效的，但重复性差，合成的相变材料批与批之间的储热性能差异大。

Methods: The analytical column was SHIMADZU VP-ODS C18 column(4.6 mm×150 mm, 5 μm) with a mobile phase consisted of 0.05 mol/L disodium hydrogen phosphate solution(85% phosphoric acid solution with pH adjustment to 2.5)-acetonitrile-methanol(42.5∶47.5∶10) at the flow rate of 1.0 ml/min, the detection wavelength was set at 254 nm.

色谱柱为SHIMADZU VP-ODS C18柱(4.6 mm×150 mm，5 μm)，流动相为0.05 mol/L磷酸氢二钠溶液(用85%磷酸溶液调节pH值至2.5)-乙腈-甲醇(42.5∶47.5∶10)，流速为1.0 ml/min，检测波长为254 nm。

Another method was studied for in-situ synthesizing sodium alginate grafted sodium acrylate in disodium hydrogen phosphate dodecahydrates' melt.

本论文提出了另一种方法，是在十二水磷酸氢二钠熔体中，原位合成海藻酸钠接枝丙烯酸钠共聚物作为增稠剂。

Then,the tradition manner of crystallization was evaporating and crystalline,but this paper made the other method . The salt-mixture solution of the disodium hydrogen phosphate and the monometallic odium orthophosphate was put in ethanol.

传统的结晶方法是通过加热蒸发结晶，而本文则采用了一种新的结晶方法，在精调后的正磷酸盐混合溶液中加入乙醇，由于正磷酸盐不溶于乙醇，就会使正磷酸盐溶液达到过饱和，再通过搅拌，析出晶体。

Its steps include these:(1) purification of WPA;(2) neutralization reaction between purified WPA and sodium carbonate for the salt mixture of disodium hydrogen phosphate and monometallic sodium orthophosphate;(3) adjustment of the mixture's neutralizing degree with additive acid or alkali;(4) quick separation of crystal with additive organic solvent under continue stir;(5) polymerization of crystal under the high temperature for the high quality product of STPP.

其步骤为：(1)湿法磷酸净化；(2)净化后的磷酸与碳酸钠中和反应生成磷酸一氢钠和磷酸二氢钠混合盐溶液；(3)用酸、碱调节确定该混合盐溶液的中和度；(4)加入有机溶剂，通过不断地搅拌使晶体快速析出；(5)晶体经高温聚合，生成高品质的三聚磷酸钠。

The agents consist of a CO2 generating source, usually sodium bicarbonate, and an acid constituent such as tartaric, citric or adipic acid or their sodium or calcium salts, disodium hydrogen phosphate or aluminum sulfate.

通常该发酵剂中含有产生CO2的物质，一般是碳酸氢钠或一种酸，如酒石酸、柠檬酸或脂肪酸或它们的钠盐或钙盐，磷酸二氢钠或硫酸铝。

WPA ; reaction ; crystallization ; food additive ; disodium hydrogen phosphate

本研究针对原料所含杂质、食品添加剂磷酸二氢钠得率问题以及生产

Methods: The analytical column was SHIMADZU VP-ODS C18 column(4.6 mm×150 mm 5 μm) with a mobile phase consisted of 0.05 mol/L disodium hydrogen phosphate solution(85% phosphoric acid solution with pH adjustment to 2.5)-acetonitrile-methanol(42.5∶47.5∶10) at the flow rate of 1.0 ml/min the detection wavelength was set at 254 nm.

目的：建立丙酸氯倍他索尿素乳膏中丙酸氯倍他索含量的HPLC测定方法。方法：色谱柱为SHIMADZU VP-ODS C18柱(4.6 mm×150 mm5 μm)流动相为0.05 mol/L磷酸氢二钠溶液(用85%磷酸溶液调节pH值至2.5)-乙腈-甲醇(42.5∶47.5∶10)流速为1.0 ml/min 检测波长为254 nm。

Then,in the bovine serum albumin buffer solution containing disodium hydrogen phosphate and citric acid,ferrite/polyacrylamide was added with crosslinker glutaraldehyde and then be enwrapped by BSA.

首先在反相微乳液体系中制备出Fe3O4/PAM磁性微球；然后在牛白蛋白的磷酸氢二钠-柠檬酸缓冲溶液中，以戊二醛为交联剂，加入Fe3O4/PAM微球，使蛋白质特异性吸附在微球上。

Disodium hydrogen phosphate dodecahydrates possesses the largest mass heat storage capacity among the low temperature phase change materials, which are classified as inorganic, organic and then: composites, yet it experiences phase segregation and super cooling when melting and hinders its application in latent heat storage system.

低温相变材料可分为无机、有机物及其复合物。十二水磷酸氢二钠(Na_2HPO_4·12H_2O)是其中质量储热密度最大的一种，但由于熔化时发生相分离，而妨碍了它的实际应用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。