水溶液

A detail study of the polarographic reduction of genistein in aqueous medium from pH1 to pH12 is presented.

研究了新型抗癌药物染料木素在pH=1～12水溶液中的极谱行为。

Hydroxypropylmethylcellulose which possesses weak polarity groups, like polyhydroxy groups and ether groups, will transform to hydrogel when temperature increases.

纤维素衍生物羟丙基甲基纤维素分子中含有大量的羟基和醚键，其水溶液在升温情况下可以发生凝胶转变，是一种新型的有机模板，本文对其作用下特别是凝胶状态下的矿化进行了探讨。

Reparation of PBO was begun with the polymerization process in which composite salts that contained 4,6-diaminoresorcinol and terephthalic acid were dissolved in polyphosphoric acid and phosphorus pentoxide.

BO纤维制备：以4，6-二氨基间苯二酚的盐酸盐为单体原料，与对苯二甲酸混合，经过中和反应、脱色处理、干燥后制成复合盐；再以多聚磷酸为溶剂，添加五氧化二磷和抗氧化剂，经过预聚合反应制备出PBO聚合物；聚合物通过双螺杆挤出机进一步进行聚合，然后通过喷丝板挤出，在磷酸水溶液中凝固成型，经过洗涤、干燥等过程，最终卷绕成型。

The method comprises heating up the lactic acid solution to gasify at 150-200 degree C, mixing the obtained mixed vapour of lactic acid and water with the carrier gas, entering into gas-solid catalytic reactor to get the reaction product gas by the action of a modified Y zeolite molecular sieve catalytic agent and dewatering after heating up the mixed gas to 200-450 degree C, obtaining the propenoic acid solution through gas-liquid dissociation after cooling the reaction product gas, obtaining coarse propenoic acid products form the propenoic acid solution by gas stripping, azeotropic distillation, extraction and rectification in turns.

其特征在于将乳酸水溶液加热至150～200℃气化得到的乳酸-水混合蒸气与载气混合，将混合后的气体继续加热到200～450℃后进入气-固相催化反应器中经改性Y沸石分子筛催化剂作用脱水得反应产物气体，反应产物气体冷却后经气液分离得到丙烯酸溶液，丙烯酸溶液再依次经过气提、共沸蒸馏或萃取、精馏得到粗丙烯酸产品。

Methods:The RP-HPLC method was applied and protocatechuic aldehyde was used as the internal standard substance.

采用RP-HPLC法，以原儿茶醛为内参照物，色谱柱：Luna C_(18)柱(250mm×4.6mm，5μm)，流动相：0.05%磷酸水溶液-乙腈，梯度洗脱程序为：0min时A-B(100∶0)，80min时A-B(67∶33)，85min时A-B(60∶40)，100min时A-B(60∶40)，流速：1.0mL·min~(-1)，检测波长：280nm。

The results show that Pd (superscript 2+) combines with KBr and cetyl pyridinium bromide into a ternary ion association precipitate2(PdBr4) in the aqueous solutions, which floated above the surface of water phase with clear interface.

结果表明，在水溶液中，Pd(上标2+)与溴化钾、溴化十六烷基吡啶形成不溶于水的三元缔合物2(PdBr4)，此三元缔合物可浮于水相上层分成界面清晰的液－固两相。

According to the preview study, the low dielectric constant will reduce the self-oxidation of the pyrogallic, which lead to the result of the lower self-oxidation rate in vesicles than that in solutions.

根据前面的研究结果，低的介电常数会抑制其自氧化，因此就出现了在囊泡中自氧化速率低于在水溶液中的现象。

The self-oxidation of pyrogallic is studied in the vesicle solution, DSB aqueous solution, and AOT aqueous solution, respectively.

在DSB/AOT自发形成的囊泡体系中，首先分别测定了相同盐度下单纯的DSB和AOT水溶液分别对邻苯三酚自氧化的影响。

But in the mixture of DSB/AOT, with the increase of DSB, the oxidation rate of pyrogallic decreases gradually to the minimum at the ratio of 7/3, which is only 50% of that in bulk solution.

但是DSB和AOT溶液在混合以后，出现了异常的变化，随着DSB比例的增加，邻苯三酚自氧化速率不但没有上升，反而逐渐降低，在DSB/AOT为7/3时达到最低点，自氧化速率仅为水溶液的50％左右。

Because MSG, if prolonged heating in aqueous solution, a small number of water loss will be generated pyroglutamic acid sodium, sodium pyroglutamate though harmless, but no flavor.

因为味精若在水溶液中长时间加热，水流失少，将生成焦谷氨酸钠，钠虽然无害，但没有味道谷氨酸。

This paper demonstrated the impact on the environment today, an important factor is Education.

本文主要展示了当今影响环境的一个重要因素——教育。

Article 16 The power to interpret these Procedures shall remain with the Ministry of Agriculture and CAA.

第十六条本程序由农业部、国家认证认可监督管理委员会负责解释。