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Many influential factors of this method were analyzed. The experimental results indicated: the mole ratio of urea, sodium hypochiorite and sodium hydroxide was controlled within the range of (1.10~1.12):1:(2.30~2.42), the temperature of low temperature reaction must be controlled under 20℃, the high temperature should intensify fast to backset current temperature while reacting and the time for raising temperature only within 5min, and the yield of hydrazine hydrate can be reach about 75.1%.

实验分析了尿素法生产水合肼的各种影响因素,实验表明,尿素、次氯酸钠与氢氧化钠的摩尔比为(1.10~1.12):1:(2.30~2.42),低温反应温度控制在20℃以下,高温反应阶段快速升温至回流后反应5min左右时,水合肼收率可达75.1%左右。

Objective:To analyze the factors influencing chloral hydrate stability.

目的 :分析影响水合氯醛合剂中水合氯醛稳定性的因素。

Results The result showed that 0.7% and 1% sodium pentobarbital anesthesia duration was too short, 1.5% pentobarbital sodium easily made animal deaths, and 10% chloral hydrate used for anesthesia in mice was appropriate. And the glass cannula was more suitable than adhesive bandages for enswathement.

结果 0.7%和1%戊巴比妥钠麻醉持续时间过短,1.5%戊巴比妥钠和10%水合氯醛能维持足够手术操作所需的时间,但1.5%戊巴比妥钠易导致动物死亡,故采用10%水合氯醛麻醉小鼠较合适;玻璃套管法包扎的效果较创可贴法为好且更简便。

To investigate the hydration of proteins in magnetized water, pure water was treated with a static magnetic field over different effective treatment time t(subscript eff. Viscosimetry and oxygen nuclear magnetic resonance (17O-NMR) spectra were recorded. The hydration properties of β-lactoglobulin in magnetized water were examined by differential scanning calorimetry and NMR.

为探讨蛋白质在磁化水中的水合作用,首先利用粘度测定及氧17核磁共振(17O-NMR)对经静磁场处理不同有效时间t(下标 eff后的纯水进行了分析,进一步又利用差示扫描热量计及NMR对溶解于磁化水的尽乳球蛋白的水合特性进行了分析。

" Alum Inorganic compound, any of a class of hydrated double salts, usually consisting of aluminum sulfate, water of hydration (an essential part of the crystal makeup), and the sulfate of another element."

明矾:一种无机化合物。一组通常由硫酸铝、水合水和其它元素的硫酸盐组成的水合复盐的总称。

" Alum Inorganic compound, any of a class of hydrate d double salts, usually consisting of aluminum sulfate, water of hydration (an essential part of the crystal makeup), and the sulfate of another element."

明矾:一种无机化合物。一组通常由硫酸铝、水合水和其它元素的硫酸盐组成的水合复盐的总称。

The experimental results showed that the aquation of JM216 follows the pseudo-first-order- rate law, of which the observed-rate constant kobs is 5.0×1.0-6min-1and the half life period t1/2 is 96.25 days at 37℃.

结果表明,JM216的水合反应为准一级反应,反应对JM216为一级,37°C时水合反应表观速率常数为kobs=5.0×10-6min-1,半衰期t1/2=96.25天。

It is indicated that the hexagonal calcium hydroferrite is a kind of high scattered calciferous compound. The interplanar spacing of hexagonal calcium hydroferrite is wide. The desilication activity of hexagonal calcium hydroferrite is higher. And the loss of alumina can be reduced.

结合X射线衍射分析讨论水合铁酸钙的脱硅机理,提出水合铁酸钙是一种高度分散的含钙化合物,其晶面间距较大,脱硅活性较高,并可大幅度降低铝损。

A buffering agent for a cementitious hazardous waste composition, containing electric arc furnace dust and water, includes dolomitic lime, namely either dolomitic quicklime, dolomitc monohydrated lime or dolomitic dihydrated lime.

用于含有电弧炉灰和水的粘结性危险废弃物组合物的缓冲剂,包括白云石灰,即白云生石灰、白云一水合石灰或白云二水合石灰。

And therefore it has the potential applications in green chemistry and chemical process,organic reactions areas.The literature review section of the thesis gave a brief introduction of the important applications in the green chemical process as well as the status of organic reactions research in NCW,and also summarized the applications in different kind of reactions such as hydrolysis,dehydration/hydration,alkylation,acylation, Diels-Alder reactions,rearrangements,condensations,hydrogen isotope exchange reaction,oxidation-reduction reaction,organometallic reactions.

论文的综述部分简要介绍了近临界水在绿色化工过程中的重要应用价值和国内外在近临界水中进行有机化学反应的研究现状,以及以近临界水作为反应溶剂或催化剂在水解反应、脱水/水合反应、烷基化、酰基化、Diels-Alder反应、重排反应、缩合、氢同位素交换反应、氧化还原反应、有机金属反应等反应类型中的应用。

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