查询词典 bromide

In this thesis, a novel polymerizable cation amphiphilic compound, 4-2-(acryloyloxy ethoxy benzyl tri-ethyl ammonium bromide, was synthesized.

中国科学院研究生院，有机化学，2009年，博士

When ATRP of styrene was investigated with 1-phenylethyl bromide/benzyl a,a-dibromide mixture as initiator, the GPC chromatogram shows two elution peaks and the molecular weighs of the peaks are approximately in a 2/1 ratio. It suggests that benzyl dibromide is a difunctional initiator of ATRP of styrene. The analysis of end group using 1H-NMR also proves the result above.

采用1-苯基溴乙烷／α，α-二溴化苄混合引发剂进行苯乙烯的ATRP反应时，所得聚苯乙烯的GPC谱图为双峰，分子量相差一倍，初步证明了α，α-二溴化(来源：ABf399C论文网www.abclunwen.com)苄引发苯乙烯ATRP反应时是双官能引发剂，并用~1H-NMR对聚合物结构进行分析，进一步证明了α，α-二溴化苄引发苯乙烯ATRP时是双端同时增长的。

The process includes the following steps: dissolving bromine in halogenated hydrocarbon, dropping the bromine solution into reactant system comprising pentabromo toluene, halogenated hydrocarbon, free radical initiator and hydrogen peroxide at 50-65 deg.c, and heating to 60-78 deg.c for reflux reaction until the reactant system becomes transparent; filtering the resultant to obtain solid product, washing with carbon tetrachloride and water separately and vacuum drying to obtain pentabromo benzyl bromide.

具体步骤为：将五溴甲苯、卤代烃、自由基引发剂和过氧化氢组成的反应体系加入到三颈瓶中，将0.07～0.1mol的溴溶于50ml卤代烃配成溶液，在50-65℃温度下滴加到反应体系中，滴加时间为50-70分钟，然后升温至60-78℃温度下回流反应，至反应体系逐渐变透明，且不再产生气泡时，将所得产物过滤，得到固体产物，分别用CCl 4 和水洗涤，真空干燥，即得到五溴苄基溴；其中，五溴甲苯与溴的摩尔比为1∶0.7-1∶1.0，溴与过氧化氢的摩尔比为1∶1.0-1∶1.4，自由基引发剂加入量为五溴甲苯重量的1-10％，卤代烃的加入量为反应体系体积的40％-100％，所用溶剂可以直接进行下一批反应，不需要更换溶剂或蒸馏提纯。

Benzyl butyrate was prepared by phase transfer catalysis of butyric acid with benzyl chloride in the presence of ben zalkonium bromide as a catalyst.

以丁酸和氯化苄为原料，以新洁而灭为相转移催化剂合成了丁酸苄酯。

The result is quite amazing: Although there is only one photon, as long as there are two gaps there, there are black and white stripes on the bromide paper.

虽然只有一个光子，但是只要有双罅缝，最后冲洗出来的感光胶片上就有黑白相间的条纹。

Carries out the macroscopic and microscopic analysis for corrosion of heat-exchange tubes used for lithium bromide absorption chiller,investigates the corrosion substance by scanning electron microscopic and X-ray energy dispersive spectroscopy,analyzes the chemistry composition of tubes,cooling water and lithium bromine solution.

对某制冷机组吸收器的冷却水管出现不同程度的腐蚀穿孔进行宏观和微观形貌分析，对腐蚀孔附近腐蚀产物进行扫描电镜-能谱分析，并对冷却水管化学成分、冷却水质和溴化锂溶液进行分析。

But the glass-transition temperature of the polymer decreased to 96℃. When the cuing agent, PN was replaced by diphenyldiaminomethane, the V-0 rating could be achieved with the least content (3.68 wt% P and 0.83 wt% N) and Tg was increased to 139℃. The cyanate ester- containing PN was synthesized by phosphorus-containing PN and cyanogen bromide.

为了减少磷的用量，将PN改成含有氮的硬化剂(Diphenyl diaminomethane， DDM)，利用DDM中的氮和含磷PN的磷产生氮磷共乘阻燃效果，可使磷用量下降至3.68%，氮含量0.83%即可达V-0级，而Tg也上升至139.83℃。

The major materials consisted of type O fresh plasma from healthy males, gelatin, sepharose 4B activated with cyanogen bromide,sephadex G-25, urea, and trishydroxymethylaminomethane.

材料主要包括新鲜健康男性&O&型血浆、明胶、CNBr-activatedSepharose 4B、交联葡聚糖G-25、尿素、三羟甲基氨基甲烷等。

Has now been formed, including scale inhibitors, corrosion inhibitors, bactericidal Algicide, cleaning agents, pre-film, chelating agents, distributed agents from the monomer to a wide range of complex pharmaceutical product system, as well as soda ash, calcium chloride , magnesium chloride, sodium nitrite, bromine and bromide products.

现已形成了包括阻垢剂、缓蚀剂、杀菌灭藻剂、清洗剂、预膜剂、螯合剂、分散剂等从单体到复合药剂门类齐全的产品体系，以及纯碱、氯化钙、氯化镁、亚硝酸钠、溴素及溴化物系列产品。

The coordination reactions of Cu and Ni with acid alizarine blue B in the presence of cetyltrimethylammonium bromide micelle were investigated using the microsurface adsorptionspectral correction technique. The aggregation of AABB on CTAB followed the Langmuir isothermal adsorption law. The enrichment of AABB on CTAB sensitized the complexation between Cu or Niand AABB.

应用微相吸附-光谱修正技术，研究了Cu、Ni与酸性茜素蓝B在溴化十六烷基三甲铵胶束上的配位反应，分析了表面活性剂在配位反应中的增效机理，表征了二元和三元结合物的性质。

His female bullfighter Lydia gradually Health love, but she was in a vegetative state after the Bulls Zhuangcheng away from her, just because Lydia's ex-boyfriend showed more affectionate than he is like love.

他对女斗牛士莉迪亚渐生爱意，却在她被公牛撞成植物人后离她而去，仅仅因为莉迪亚的前男友表现出好似比他更深情的爱。

I know of none which are not easy to answer, but what I am trying to do now is only by a series of hints to throw some light on the narrow path of legal doctrine, and upon two pitfalls which, as it seems to me, lie perilously near to it.

我不认为有什么难以回答的问题，但我现在要做的仅仅是通过一系列线索，来给法律理论的狭窄路径以及在我看来离它近得危险的两个陷阱提供一些启示。