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In order to research the relations of carbon sources to structure of PHAs, six kinds of PHAs sample were synthesized by activated sludge with six different carbon sources respectively in the aerobic-anaerobic-anoxic process. Their structures were determined by 〓HNMR、〓CNMR and GC-MS. When the carbon source was acetate, the unit composition of PHAs was 93. 91mol％ 3-hydroxybutanoic acid and 6. 09mol％ 3-hydroxypentanoic acid ; When the carbon source was propionate, the unit composition of PHAs was 28. 66mol％ HB, 63. 13mol％HV, 2. 55mol％ 2-methy-3-hydroxy-butanoic acid (2MHB) and 5. 66mol％ 2-methyl-3-hydroxypentanoic acid (2MHV); When the carbon source was 80％ butyrate and 20％ 1, 4-butanediol, the unit composition of PHAs was 65. 03mol％ HB, 28. 06mol％HV, 1. 91mol％2MHB, 2. 69mol％ 2MHV, 0.73mol％ 4-hydroxy butanoic acid (4HB), 0.78mol％ 4-methyl-3-hydroxy-pentanoic acid (4MHV), 0.80mol％ 3-hydroxyhexanoic acid ; When the carbon source was 20％ butyrate and 80％ 1, 4-butanediol, the unit composition of PHAs was 61. 39mol％ HB, 23. 01mol％HV, 4. 58mol％2MHB, 5. 97mol％ 2MHV, 0.91mol％ 4HB, 2. 37mol％ 4MHV, 1. 77mol％ HHx; When the carbon source was 60％ pentanoate and 40％glucose, the unit composition of PHAs was 41. 24mol％ HB, 58. 76mol％HV; When the carbon source was 60％ benzoate and 40％ glucose, the unit composition of PHAs was 65. 48mol％ HB and 34. 52mol％ HV.

为了研究不同碳源与产物PHAs结构的关系，采用好氧-厌氧-缺氧模式利用6种不同碳源培养活性污泥得到6种不同的PHAs样品，通过〓HNMR、〓CNMR和GC-MS谱图确定了这6种PHAs的单体成分和比例：以乙酸钠培养活性污泥得到的PHAs的单体组成是93.91mol％3-羟基丁酸和6.09mol％3-羟基戊酸；以丙酸钠培养活性污泥得到的PHAs的单体组成除28.66mol％HB、63.13mol％HV外，另外还有2.55mol％3-羟基2-甲基丁酸（2MHB）和5.66mol％3-羟基2-甲基戊酸（2MHV）；以80％丁酸钠和20％1，4-丁二醇混合溶液培养活性污泥得到的PHAs含有七种单体组成：65.03mol％HB，28.06mol％HV，1.91mol％2MHB，2.69mol％2MHV，0.73mol％4-HB（4-羟基丁酸），0.78mol％4MHV（3-羟基-4-甲基戊酸），0.80％HHx（3-羟基己酸）；以20％丁酸钠和80％1，4-丁二醇培养活性污泥所得到的PHAs含有与3#样品相同的七种单体，只是比例不同，分别是61.39mol％，23.01mol％，4.58mol％，5.97mol％，0.91mol％，2.37mol％，1.77mol％；以60％戊酸钠和40％葡萄糖培养活性污泥所得到的PHAs由HB和HV组成，比例是41.24 mol％∶58.76 mol％；以60％苯甲酸钠和40％葡萄糖培养活性污泥所得到的PHAs也由HB和HV组成，比例是65.48 mol％∶34.52 mol％。

Sodium amalgam was synthesized according to the method developed by Shanghai Silicate Research Institute, Academy of Sciences of China, by mixing high purity sodium electrolytically purified from industrial grade sodium at 350℃ with amalgam and using ceramic material containing a small amount of Na_2O as separating film.

作者采用中科院上海硅酸盐研究所研究成功的钠汞齐制造工艺，以含少量Na_2O的陶瓷材料为隔膜，在350℃下电解工业级金属钠制成高纯钠，再合成出钠汞齐。

Phytin was extracted with diluted hydrochloric acid, after precipitating the effluent and transforming the precipitate with sodium hydroxide, sodium phytate solution was produced.

采用化学沉淀法由菲汀制取植酸和植酸钠。菲汀经酸浸、沉淀、加碱使沉淀转化可制得植酸钠溶液。植酸钠溶液经减压浓缩、乙醇结晶可制得针状的植酸钠晶体，或经离子交换树脂酸化、浓缩可得浓度为70%的植酸

The comparison of hardness removal effect in circulating cooling water with lime,lime and soda, and sodium aluminate has conducted respectively.

对偏铝酸钠、石灰法和石灰纯碱法处理循环冷却水硬度进行了比较，结果表明，偏铝酸钠和石灰纯碱法效果最好；以偏铝酸钠与助凝剂的配伍使用结果表明，偏铝酸钠与PAM配伍使用的效果较好。

Michael addition reaction must be carried out in the base of the catalyst, the alkali used are: sodium, sodium ethoxide, sodium hydride, sodium amide ...

迈克尔加成反应必须在碱的催化下进行，常用的碱有：金属钠、乙醇钠、氢化钠、氨基钠。。。

In this paper, the current research status on structural characteristics and decomposition mechanism of supersaturated sodium aluminate solution are reviewed.

本文对过饱和铝酸钠溶液中铝酸根离子存在的基本形态，浓度、苛性比和阳离子对铝酸钠溶液结构性质的影响，溶液中多种铝酸根离子平衡与转化规律，以及铝酸钠溶液分解机理研究的现状进行了总结和评述；分析了现有铝酸钠溶液结构性质与分解机理研究的不足；围绕强化氧化铝生产中铝酸钠溶液分解过程的目的，提出了铝酸钠溶液结构性质与分解机理研究的重点。

The results show that the dispersity order of phosphates from strong to weak is as follows: sodium hexametaphosphate, sodium pyrophosphate, trisodium phosphate.

结果表明：磷酸盐对这4种矿物分散效果由强至弱的顺序为：六偏磷酸钠，焦磷酸钠，磷酸三钠；六偏磷酸钠增大铝硅酸盐矿物颗粒表面电位的绝对值，从而提高了颗粒间静电排斥作用；同时，六偏磷酸钠吸附于铝硅酸盐矿物表面后，加剧了颗粒之间的空间位阻效应，使颗粒间产生较强的位阻排斥力。

As noted above,membrane-stabilizers unexpectedly improved the heart function andprevented ER stress both in vivo and in cultured cells.We know that the membranestability depends on the sodium homeostasis in fact.To investigate whether ER stress isassociated with sodium channel action,which determins the membrane stability,wepretreated H9c2(2-1) cells with veratridine,a sodium channel activator.

上面的研究发现膜稳定剂在体内体外均抑制了内质网应激，并改善了心脏功能，而膜稳定作用实际上是维持细胞钠离子稳态的结果，为了研究内质网应激反应与钠离子活动的关系，我们用一种钠通道激活剂藜芦定刺激H9c2(2-1)细胞，30分钟时GRP78表达增加；24小时时PERK磷酸化和CHOP蛋白表达显著增加，说明钠离子通道过度激活诱发了内质网应激反应。

The aims of the writers study is to observe the effects of its inducing apoptosis and influencing cell cycle by treating esophageal carcinoma cases with sodium cantharidate before operation.

本研究通过术前应用斑蝥酸钠注射液，旨在观察其诱导食管癌肿瘤细胞凋亡、对肿瘤细胞周期的影响，并初步探讨两者的关系；通过测定p53、bcl-2基因表达在应用斑蝥酸钠后的变化，初步探讨斑蝥酸钠治疗食管癌的分子机制；同时测定应用斑蝥酸钠后的免疫功能变化，以期对斑蝥酸钠对机体的影响做出较全面的评价。

Changes of some metabolites and hormones after jugular infusion of sodium propionate or acetate in normal feeding or fasting water buffaloes The buffaloes were infused with sodium propionate or acetate in normal feeding or 24 hours fasting status.

灌注丙酸钠，葡萄糖水平不仅不升高，反而显著性地低于灌注前和同期对照组的水平，乙酸钠灌注对血糖无影响。灌注丙酸钠或乙酸钠后血浆IGF-1水平下降，但均无显著性差异。

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。