查询词典 hydrogen bromide

Bromoethyl benzene was synthesized by anti-Markovnikov addition of hydrogen bromide to styrene under ultraviolet light irradiation.

在紫外线的照射下，苯乙烯与溴化氢气体发生反马氏规则自由基加成反应，可合成β-溴乙苯。

This new methods can shun corrosiveness of liquid bromine or gas hydrogen bromide released during bromating reaction to the equipments and eliminate harmfulness to the operating worker and environment.

研究以溴化钠/溴酸钠完全代替传统的溴素作为溴代试剂合成了四溴双酚A，避免了使用溴素和因溴素作为溴代试剂时产生的溴化氢对设备、操作人员以及环境的危害。

Bromoethyl benzene was synthesized by anti-Markovnikov addition of hydrogen bromide to styrene.

通过苯乙烯与溴化氢气体发生反马氏规则自由基加成反应，合成了β-溴乙苯。

The experimental result showed that three byproducts was formed and the optimal condition was as follows: the molar ratio of ethylene glycol, hydrogen bromide, and acetic acid was 1:1:1.3, when ethylene glycol was 1 mol, refluxed 5 h under the action of 100 mL toluene.

结果表明：较适宜的合成条件为乙二醇1 mol， n：n：n=1：1：1.3，在带水剂甲苯(100 mL)的作用下，回流反应5 h，约4 h后分两次追加0.12×2 mol醋酸酐，合成效果最好，产率可达到95%，反应副产2-溴乙醇及少量的1， 2-二溴乙烷、乙二醇二乙酸酯和二乙二醇二乙酸酯。

Bromoethyl acetate was synthesized by reacting ethylene glycol with an aqueous solution of hydrogen bromide(47%) and acetic acid(1:1:1.3) in the water-carrying agent, which formed an azeotrope with water but not with 2-bromoethyl acetate.

以乙二醇、w=47%和冰醋酸为原料，在带水剂的作用下合成了2-溴乙基乙酸酯。

Angular distribution for scatterings of 3He、4He、6He and 7He with hydrogen bromide molecules are calculated by using close-coupling approach from the anisotropic intermolecular potential of the He-HBr system established by the author. The calculations are performed separately at the collision energies of 60 and 100 meV. The influences of He isotope atoms on angular distribution is discussed in detail.

基于作者构造的He-HBr体系的各向异性势，采用密耦方法计算了碰撞能量分别为60和100 meV时3He、4He、6He和7He被HBr分子散射的角分布，详细讨论了氦同位素对散射角分布的影响。

In an undivided cell, the degradation of methyl red via indirect single and paired electrolysis in the presence of bromide and hydrogen peroxide redox mediators was explored.

本研究是於一未隔离式电解槽中，藉由Br-/Br2与O2/H2O2氧化还原媒子之间接催化分解甲基红之单一与组对电化学反应。

In this paper, initiator is dissolved in 1-bromopropane which is solvent. Then the propene and hydrogen bromide that can be dissolved in 1-bromopropane are inlet in l-bromopropane when initiator is decomposing. The reaction occurs in fluid phase and high-purity 1-bromopropane is synthesized by one step method. In this paper, the material HBr is synthesized with NaBr and sulfuric acid at the presence of hydrobromic acid.

本论文以1-溴丙烷为溶剂，将引发剂溶于其中，加热到引发剂开始分解时再通入丙烯和HBr，使二者溶解于1-溴丙烷中，在液相中进行反应，实现丙烯"一步法"合成高纯1-溴丙烷利用NaBr与硫酸在氢溴酸存在下反应制备HBr气体，以作为合成1-溴丙烷的原料。

It is usually hard to recycle for its high content of brominated flame retardants, so the key of recycling the wPCB is to debrominate, i.e ., to convert the organic bromides into inorganic ones, e.g ., hydrogen bromide.

实现回收的关键在于脱溴，即将有机溴代物转化为无机溴化物。

Inclusion body was dissolved using 6M guanidine hydrochloride/2M hydrogen chloride and adding cyanogen bromide to solution Expression production was removed N terminal fusion protein AMP-A/B/C/D antibacterial activity was detected.

实验结果发现AMP-A没有抑菌活性；AMP-B/C/D均表现出广谱的抗菌活性，它们的最小抑菌浓度约为9μM，其中AMP-C对革兰氏阴性菌的抑菌效果最强，AMP-D抗菌广谱性较AMP-B/C差。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48