二钠

Make comprison of SGS concerning lathering power and foam stability. Test shows that N,N＇-Difatty acid acyl hexamethylene-diamine-ethylene sulfonate（SGS-12）has better lathering performance and foam stability.

对SGS系列双子表面活性剂的起泡性能和稳泡性能进行了比较，其中N，N＇-双月桂酰基己二胺二乙基磺酸钠（即SGS-12）具有更好的起泡性和稳泡性。

The degree of the plumping of the cattle hide and the removal of the hair were evaluated during the li- ming process;the protein,suspending substance,sodium sulfide and effective calcium oxide contents in the liming liquor and the fat content in the limed hide were measured;also,the tissue slice of the limed hide was observed by optic microscope.

将不同量的十二烷基硫酸酯钠、十二烷基三甲基氯化铵和平平加O分别添加到浸灰液中，观察浸灰过程中皮膨胀情况和毛脱除情况，测定浸灰废液中蛋白质、悬浮物、硫化钠和有效氧化钙含量及浸灰皮油脂含量，并对浸灰皮组织切片进行显微镜观察。

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。

Preferred examples of thermal initiators include persulphates especially sodium and ammonium persulphate, peroxides especially benzoyl peroxide, t-butyl hydroperoxide and lauryl peroxide, and azos, especially azobisisobutyronitrile.

热发起者首选的例子包括硫酸盐，尤其是钠，过硫酸铵的，过氧化物尤其是过氧化苯甲酰的吨丁基过氧化氢和十二烷基过氧化物，和azos，尤其是二异丁腈。

There are three different nucleophilic reagent respectively reaction with m-dinitrobenzene ramification at distint alkaline term:With the nitrobenzene 、 m-nirtobenzenesulfone sodium salt 、 2.4-dinitro chlorobenzene 、 m-dinitrobenzene for bottom thing, benzyl cyanide、 benzyl chloride、 benzyl chloropyridine、is a nucleophilic reagent reaction for under the different term proceeds a series reaction. At the same time ,discuss about the impact factor to nucleophilicity such as the number of attract electron group、 ability of attract electron and the nucleophilic substitution reaction part.

设计了三类不同的亲核试剂分别与活化芳环在不同的碱性条件下发生反应：以苄基氰、苄基氯化吡啶为亲核试剂，以硝基苯、间二硝基苯、间硝基苯磺酸钠、2，4-二硝基苄基氯为底物进行亲核取代反应；并且对亲核试剂的体积效应、溶剂效应对亲核性影响，底物上吸电子基团的数目、吸电子能力对亲电性的影响，以及亲核取代反应的发生部位受哪些因素影响进行探讨。

Alkyl diphenyl ether disulfonate is a serie of anionic surfactants with many functions. It has two hydrophilic head groups and different from conventional surfactants.

烷基二苯醚二磺酸钠是一类在结构和性能上有别于传统表面活性剂的多功能性双亲水基型阴离子表面活性剂，具有卓越的表面化学性能及应用性能。

A simple, fast and selective spectrophotometric method for the determination of trace nitrate ion in uranium dioxide was developed, based on the fade of indigo carmine with nitrate ion in sulfuric acid medium.

基于硝酸根离子对靛蓝二磺酸钠的褪色反应，建立了一个简单、快速、选择性好的二氧化铀产品中硝酸根离子的测定方法。

The synthses of a new type of surfactant-sodium bis sulfuo-succinate was first reported, it could form reversed micelle with iso-octane. This reversed micellar system could extract macromolecular protein-hemoglobin as well as cyt-C.

首次报道了一种新型表面活性剂丁二酸二酯磺酸钠的合成，考察了它与异辛烷形成的反胶束体系在提取小分子的细胞色素C和相对分子质量较大的血红蛋白的行为。

To investigate the relationship between the tolerance to dehydration and superoxide dismutases in Pachira macrocarpa, fresh mature seeds were pretreated with a 12 h DDTC and subjected to 3~20 h desiccation silica gel at 25℃. The results showed that 20 mmolL^(-1) diethyldithiocarbamate treatment inhibited efficiently SOD and SOD activity in seeds and reduced tolerance of seeds to water deficit, which was evidenced with increases in electrical conductivities and malondialchehy of the seeds, and a rapid decrease of the seed vigor during desiccation.

以探讨马拉巴栗种子脱水耐性与其超氧化物歧化酶之间的关联为目的，选用新鲜的成熟马拉巴栗种子，用二乙基二硫代氨基甲酸钠（DDTC， SOD抑制剂）进行12h预处理后，在25℃下进行3~20h的硅胶快速脱水处理，观察种子的萌发率和生理指标的变化。

Quantitive coordinate solvent-DME was added during the preparation reaction or crystallization, sodium ion in complex 1, 2 and 4 will be extracted and become free one, thus new solvated anion-cation pair complexes [2Ln2][Na22] Ln = Nd (5, Sm (6), Yb (7) were formed.

在反应或者结晶的过程中加入一定量的乙二醇二甲醚，配合物1，2和4中与双芳氧鞠位的钠离子被DME分子萃取出来，生成阴阳离子对配合物[_2Ln_2][Na_2_2]Ln=Nd(5，Sm(6)，Yb(7)。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。