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硫酸

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The influences of reaction temperature and sulfuric acid concentraction on trichloroethylene conversion and chloroacetic acid recovery have been investigated.

研究了三氯乙烯水解法生产氯乙酸的工艺,并在两种不同的实验方案中考察了反应温度、硫酸浓度对三氯乙烯转化率和氯乙酸收率的影响并确定了适宜的工艺参数,可作为工业化生产研究的基础。

Compared to DNPH, reactivity was reduced for all carbonyl compounds investigated but could be enhanced significantly by using the strong Lewis acid boron trifluoride hydrate instead of sulfuric acid as catalyst in the same concentration.

比起化妆,羰基化合物被全部反应性降低,但可以提高调查显强刘易斯用硼酸氟化水合物代替硫酸作为催化剂,在同一浓度。

The results indicated that the method had high sensitivity and was very useful to determine the trimethylamine in gas phase.

用pH为1的硫酸吸收液吸收含三甲胺的气体,采用离子色谱仪测定吸收液中TMA浓度。

The determination of the sulphur trioxide in coal ash with coulometric titration method is analyzed in this paper.

分析了库仑滴定法测定煤灰中三氧化硫的过程,同时针对该法对少数硫酸钙含量特别高的煤灰样测试结果不理想的情况进行了相应的实验探讨。

This paper deals with a cationic bisamide compound system deinking agent whose intermediate was prepared by using tristearin, isopropylidene glycerol, diethylenetriamine and catalyzed by p-Toluene sulfonic acid and reacted at 140℃ for 2 h.

摘 要:以三硬脂酸甘油酯、二乙烯三胺为原料合成了中间体,经硫酸二甲酯阳离子化制备出双酰胺季铵盐阳离子表面活性剂,再与AEO-9、TX-10复配制得复合脱墨剂。

In this study, cross-linked type I and type II collagen matrices, with and without attached chondroitin sulfate, were implanted into full-thickness defects in the femoral trochlea of adolescent rabbits.

本研究中,粘附和不粘附硫酸软骨素的交联 I型和II型胶原基质植入到青年兔股骨髁的全层缺损。

Some approved aneugens Trip terygiuwlIypogaucum (evelHutch, colchicine, thiabendazole, a tropine sulfate,d-ubocurarine was added into the reactive system respectively and the changes of their absorption values were taken down during different periods under the conditions of 37 0C and 350nm .

本研究通过多步聚合和解聚合反应从猪脑中分离纯化微管蛋白,建立微管蛋白的体外聚合和解聚合反应平衡体系,并将已证实的非整倍体诱发剂(昆明山海棠根部水抽提物、2-(4′-噻唑)苯丙咪唑、硫酸阿托品、d-筒箭毒碱)分别加入此反应平衡体系中,于37℃、350nm条件下,记录此体系不同时期的吸光值变化,与阳性对照物和溶剂对照处理平衡体系后的吸光值在相同时间点作比较,以此评估这几类非整倍体诱发剂对离体条件下的微管蛋白聚合的影响,寻求这几类非整倍体诱发剂是否可通过抑制微管蛋白聚合作用途径而诱发非整倍体。

What really does matter is that we've taken delivery of certain raw materials--rubber, umbrella-rrames, electrical goods, turps and sulphuric acid-which come to over seventy thousand dollars altogether

要紧的还是新进的那些货,橡胶,伞骨,电料,松香,硫酸,这一类总共得七万多块钱。

Was bounded to 4-(2-aminoethylphenol), followed by labeling the 911-Tyr with fluorescein-5-isothiocyanate at the secondary amino group. High-performance size-exclusion chromatography , ultraviolet/visible spectroscopy and nuclear magnetic resonance spectroscopy demonstrated the binding of tyramine to 911 and the labeling of FITC to 911-Tyr respectively.

911抗HIV-1分子作用机制的研究利用表面等离子体共振生物传感器与流式细胞仪研究了海洋硫酸多糖911在抑制HIV-1粘附与进入宿主细胞过程中与两个潜在重要靶点(HIV-1外被膜糖蛋白rgp120及宿主细胞CD4受体)的相互作用。

Heparan sulfates are long, unbranched, negatively charged polysaccharides that are bound to core proteins.

硫酸乙酰肝素是一种结合在核心蛋白上的带负电荷的长直链多糖。

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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。

Do not 'inflate' your achievements and/or qualifications or skills .

不要 '夸大' 你的业绩或成果,条件或者技能。