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The effects of various reaction conditions were studied by GC analysis. Reaction time has slight effect on the conversion of acenaphthene. The selectivity of N-phenyl aminoacenaphthene increases with reaction time. Biacenaphthenyls or N-phenyl aminoacenaphthene is in the majority, 77.6% or 90.2% when the molar ratio of AlCl3 to acenaphthene is 1.2 and 2.4 respectively.

GC考察了不同反应条件对苊转化率和产物选择性的影响,时间对苊转化率影响不大,N-苯基氨基苊的选择性随着时间增加而增大;随着AlCl3用量的增加,苊转化率和N-苯基氨基苊的选择性随之增加;AlCl3与苊的摩尔比为1.2和2.4时,产物中联苊和N-苯基氨基苊的选择性分别达到77.6%和90.2%。

If, relative to isoflurane, cyclopropane minimally increases GABA-induced chloride currents at any GABAA receptor subtype, the present data for MAC are consistent with the notion that GABAA receptors do not mediate the immobility produced by inhaled anesthetics.

如果,相对於异氟烷而言,环丙烷在任何γ-氨基丁酸 A 受体的亚体上都是极微弱地增加γ-氨基丁酸介导氯电子流的作用,那麼现在关於 MAC 的资料就和γ-氨基丁酸 A 受体不是吸入性麻醉药产生的抑制作用的介导者这一概念一致。

A series of diazonium salts of 4-(N-methyl-N-phenylamino)-3-amino-1,8-naphthalic anhydride 5a, its naphthalimide derivative 5b, and 5e were designed and synthesized,and it was the first time to discover that aromatic radical-induced intramolecular aromatic 1, 5-hydrogen transfer was also involved in the nitrogen-contianed system during Pschorr cyclization.

实验设计合成了4--3-氨基-1,8-萘酐的重氮盐5a、其衍生物N-丁基-4--3-氨基-1,8-萘酰亚胺的重氮盐5b和N--4--3-氨基-1,8-萘酰亚胺的重氮盐5c,并首次发现了通过普朔尔环化反应以氮甲基化的氮为桥原子的体系存在着芳香自由基诱导的芳香1,5-氢转移。

The new synthetic technology of some important anthraquinone intermediates derived from 1-amino- anthraquinone, l-amino-4-hydroxy-anthraquinone, l-amino-4-bromo- anthraquinone-2-sulfonic acid, 1,5- and 1,8 dinitro- anthraquinone, have been studied.

本文研究了几种重要的由1-氨基蒽醌衍生的蒽醌型中间体:1-氨基-4-羟基蒽醌、1-氨基-4-溴蒽醌-2-磺酸和1,5-及1,8-二硝基蒽醌的合成化学,在此基础上开发了上述中间体的合成新技术。

Three novel hemicyanine derivatives,-N-(4-sulfopropyl)-4-[2-(4- N, N-diethylaminophenyl)-ethenyl]pyridinium,-N-(4-suMbbutyl)- 4-[2-(4-N, N-diethylaminophenyl)ethenyl]pyridinium (EPS4), and-N-(4- su)fobutyl-4-[2-(4-N, N-diethylaminophenyl)ethenyl]quinolinium (EQS4) with different length of alkyl chains between the adsorbing group (RSO3-) and the chromophore group, were synthesized and their photophysical and photoelectrochemical properties were studied.

设计合成了具有不同空间位阻的吡啶盐类和喹啉盐类半菁染料-N-(4—磺酸根丙基)-4-[2-4(4-N,N-二乙基氨基苯基)乙烯基]吡啶鎓盐,-N-4-磺酸根丁基)-4-[2-(4-N,N-二乙氨基苯基)乙烯基]吡啶鎓盐(EPS4)和-N-(4-磺酸根丁基)-4-2-(4-N,N-二乙基氨基苯基)喹啉鎓盐(EQS4),研究了它们的光物理性质,并将它们用作TiO2纳米晶电极的光敏化剂引入光电化学电池中。

The study sum up a synthesized route which synthesize (2E,4E)-1,6-bis(3-aminopiperidin-1-yl)hexa -2-4-diene-1,6-dione easily.

总结出了一条反,反-1,6-(R-3-氨基哌啶基)粘糠酰氨的一条合成路线,为国内外同行在合成反,反-1,6-(R-3-氨基哌啶基)粘糠酰氨及其性能研究方面提供了大量得数据,为同行们在合成和更深入的研究反,反-1,6-(R-3-氨基哌啶基)粘糠酰氨提供有限的参考,以互相学习交流。

Five of their single crystals were obtained and their structures were determined by X-ray diffraction. By comparison, it was found that dithiocabamate complexes often formed an exactly planar MS4 unit, such as [Mo(R2dtc)2]; and also formed a special MS 5 unit, such as [Cu2(R2dtc)4], the copper atom lies in a distorted square-pyramidal environment.Four kinds of heteropoly acids were prepared and characterized; a series of solid superacid catalyst of supported heteropoly acid were prepared and characterized; regioselectivites of chlorobenzene mononitration with nitric acid with different heteropoly acid on different supports and reaction conditions have been investigated.

培养并解析了5个该类配合物的单晶结构,通过比较,发现二硫代氨基甲酸盐与过渡金属容易形成四配位结构,金属原子与4个硫原子共平面,比如二乙基二硫代氨基甲酸钼;也能形成比较特殊的五配位结构,比如二乙基二硫代氨基甲酸双核铜,Cu原子与5个S原子相连,处于一个变形的四方锥结构的配位环境。

The obtained terephthalaldhydic acid semicarbazone has such advantages as simple process and high purity (above 99% after post treatment), and can be used as standard in enzymoimmunoassay of semicarbazide.

本发明成功合成了呋喃西林代谢物氨基脲的衍生物氨基脲缩对醛基苯甲酸,合成步骤简洁,经过后处理,纯度高达99%以上,完全可以用作标准品,为以后人们对氨基脲的酶联免疫检测研究提供了方便的途径,可以满足国内对其研究的需要。

The anodic behavior of electrolytic nickel anode in nickel sulfamate plating Solution was investigated,using anodic polarization curves,metallographic observation of cross-sections of nickel deposits,Hull Cell tests with solutions with and without Cl-,F-,bending tests with five solutions of different compositions,and sulfur content analysis in nickel deposit with mass spectrometry.

采用极化曲线、金相观察、赫尔槽电镀试验、弯曲试验和质谱分析方法,研究了氨基磺酸盐镀镍的阳极行为,证明了当在氨基磺酸盐镀液中使用电解镍阳极时,其活化峰值电流和镀液组成有很大的相关性,当镀液中不含F-和Cl-时其阳极活化峰值电流小,阳极处于极化状态,或相当大面积处于极化状态,使氨基磺酸根在极化的阳极表面氧化,从而使含硫化合物夹附于镀镍层,形成镀层内应力,并使镀层成为层状结构,并出现半光亮的外观。

Amino resin or amino paint is mixed with a certain amount of polyisocyanate and xylene solvent etc is added.

氨基树脂或氨基漆与一定比例的多异氰酸酯固化剂混合,加入二甲苯等稀释剂不浑浊,用氨基漆与合适比例的多异氰酸酯固化剂可配成综合性能优异的双组分聚氨酯

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推荐网络例句

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。