盐的

Because the olefinic hydroxyl groups are linked with olefinic carbon, so it can ionize H〓 ion and present the properties of weak acid, and so the olefinic hydroxyl groups change into the structure of alcoholate in the presence of alkali , but the structure of alcoholate may change into the structure of olefine alcohol again, after the Na〓 ions is removed, or when the pH value of its solution turn into pH. Because the structure of the olefine alcohol is not stable and is easy to isomerizate to become the structure of olefine ketone, so there appear the ca. 1730cm〓 C=O absorption peak in the IR spectra of the products.

明确指出了在C〓、C〓富勒醇中存在烯碳羟基与叔碳羟基等二类羟基，烯碳羟基由于与一个共轭体系相连，从而其羟基可以离解而呈现出弱酸的性质，因而在碱性条件下易形成烯醇钠盐的结构，当除去钠离子后或在酸性溶液中，烯醇钠盐结构转变为烯醇结构，但由于烯醇结构不如烯酮结构稳定，从而形成烯醇结构后，烯醇结构异构化为烯酮结构，因此在其产物的IR谱图上出现1730cm〓附近的C=0吸收信号。

On the basis of analyzing data about stearic acid triethanolamine ester quaternary's preparation process and methods of analysis and identification, this article summarized synthetic conditions for this quaternary ammonium salt, this synthetic condition composed by synthesis of esters and quaternary ammoniation.

在对有关硬脂酸三乙醇胺酯季铵盐的制备工艺、分析鉴定方法的资料分析的基础上，综述了由硬脂酸制备该季铵盐的工艺条件，该工艺条件由酯胺的合成和季铵化2步构成。

Electrical stimulation of NA had no effects on gastric volumes, titratable acidity, acid concentration, but elicited a badly pronounced increase in the total bicarbonate, as well as restraining of respiration and inducing sinus bradycardia. But electrical stimulation of DMV produced a badly significant increase in titratable acidity, and pronounced an evident increases in gastric volumes and acid concentration, as well as restraining respiration and inducing sinus bradycardia.

而电刺激迷走神经背核，胃液中可滴定H~+量增加极显著，胃液量和H~+浓度也显著增加，但碳酸氢盐的量无明显变化；也引起严重的呼吸人鼠疑核和迷走神经背核对胃酸、碳酸氢盐分泌彩响的比较研究抑制和心动过缓，左右侧的抑制率差异不显著。

In this paper, a quaternary ammonium salt of chitosan was synthesized and the factors affect on the solubility or degree of substitution of product, such as the concentration of alkali, the time of basification, the content of water in system, the time of dispersing and the method of adding epoxyproryltrimethylammonium chloride, were discussed in detail. The product was characterized by IR, DSC, TG and X-RAY diffraction. The effects of time, humidity and temperature on the gases permeability of the quaternary ammonium salt of chitosan film were researched.

本论文研究了壳聚糖季铵盐的合成反应，对碱化浓度、碱化时间、水的含量、分散时间和醚化剂的加入方式等因素对制备反应的影响进行了考察；应用红外光谱、DSC、TG以及X-射线衍射对产物进行了表征；探讨了时间、湿度和温度对壳聚糖季铵盐膜透气性的影响。

The photochemical and thermal decomposition of various diphenylamine diazonium salts in ethanol were studied. It was found that, the major products in photochemical decomposition are their corresponding substituted diphenylamino-4-ethyl ethers while their corresponding diphenylamines were obtained as only one product in the case of thermal decomposition.

并研究了二苯胺型重氮盐的光、热分解，结果表明：在醇中，二苯胺型重氮盐的光解主要生成重氮基被乙氧基取代的产物；热解几乎生成唯一的重氮基被氢取代的产物。

The homogeneous catalysts for selective O-methylation of phenols with DMC are generally organic bases, such as tertiary amines or phosphines, tetrabutylammonium halide and Schiff bases.

酚与DMC甲基化反应的均相催化剂一般选择叔胺、叔膦、季铵盐及Schiff碱等有机碱，多相催化剂为碱金属碳酸盐、沸石、氧化铝及附载有金属盐的氧化铝和煅烧的Mg-Al水滑石。

The active zinc borate, hydrophobic and oleophilic, is prepared, using borax, zinc sulfate, boric acid and fatty acid or its salt as the material and water as the solvent, by controlling the proper reaction temperature, solid-to-liquid ratio, material ratio, reaction time and the addition quantity and time of the fatty acid or its salt and by filtering, drying and pulverizing.

本发明以硼砂、硫酸锌、硼酸和脂肪酸或其盐为原料，以水做溶剂，通过控制适当的反应温度、固液比、物料比、反应时间及脂肪酸或其盐的加入量及加入时间，通过过滤、干燥和粉碎制备出疏水亲油的活性硼酸锌。

According to the British organization Consensus Action on Salt in Health, a three-course meal in a restaurant can contain more than 15 g of salt, almost three times the recommended daily amount.

根据英国组织&为了健康同心抗盐&的调查，餐馆里的三餐含有高达15克的盐——几乎三倍于推荐食用量。

So wc concluded that HS1 had the same strcss tolcrancc ability in thc rye grass,which was suitablc for hcrcdity improvcmcnt.

因此，我们认为来源于拟南芥的HS1基因在黑麦草中同样具备抗旱耐盐的生理功能，是一个适合用做抗旱耐盐遗传改良的重要基因。

We all know of the superstition surrounding the spilling of salt, but here is a slightly more unusual one.

我们都知道关于洒翻盐的迷信说法，但是这里还要介绍一个更为罕见的关于盐的迷信。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。