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Results showed that under the conditions of a reaction temperature of 60 ℃,a reaction time of 6 h and a catalyst consisted of 1.0% BF3-ether and 1.5% AlCl3,the yields of aromatic solvent naphtha and petroleum resin...

结果表明,采用两段聚合法,在催化剂三氟化硼乙醚络合物质量分数1.0%、三氯化铝质量分数1.5%、聚合温度60℃、聚合时间6h的条件下,芳烃溶剂油收率为71.1%,石油树脂收率最高可达20%;同时所得的芳烃溶剂油切割为120号和200号溶剂油,指标达到行业标准。

The light absorption in the near infra red region of praseodymium, samarium and ytterbium solutions.

唐高1,朱基千1,2,"掺镨(Pr3+)和铥(Tm3+)氟化镓铟玻璃标准的和改进后的贾德奥菲尔特理论研究",光学学报 27,

The cell proliferation and differentiation were measured as index of stimulating osteoblastic bone formation. Cell proliferation was assayed by MTT method with fluoride sodium as positive control.

以成骨样细胞的增殖和分化为活性检测指标,成骨样细胞的增殖以MTT法测定,氟化钠为阳性对照药。

At 500°-600° it is attacked strongly, with formation of the tetrafluoride.

在500℃-600 ·它的攻击强劲,形成的氟化。

The results show that the optimum catalysts for the Michael addition and the nitroreduction were tetrabutylammoniumfioride and titanium trichloride, and the yields of the addition product and the reduction product were 54% and 78%, respectively.

结果表明,Michael加成反应和硝基还原反应的最佳催化剂分别是氟化四丁基铵和三氯化钛,在二者催化作用下所得加成产物和还原产物的收率分别为54%和78%。

A space or line of the staff.lined with boron or filled with boron trifluoride gas.

有具线纹的硼或充满三氟化硼气体的小室。

A new triphenylamine-containing aromatic diamine monomer, 4-[4-(1-adamantyl)phenoxy]-4',4-diaminotriphenylamine, was synthesized from cesium fluoride-mediated N-arylation of 4-(1-adamantyl)-4'-aminodiphenyl ether with 1-fluoro-4-nitrobenzene and subsequent reduction of the dinitro intermediate.

摘要 本研究首先使用 4-(1-adamantyl)-4'-aminodiphenol ether 与 1-fluoro-4-nitrobenzene,於DMSO中,以氟化铯为媒介,进行氮-芳香化反应(N-arylation),随后再进行中间产物的还原反应,制得一个种新型具有三苯胺结构的芳香族二胺单体 4-[4-(1-adamantyl)- phenoxy]-4',4-diaminotriphenylamine。

Application of organic acid catalysis to the polymerization of pyrroles and pentafluorobenzaldehydes, with the xylene as reaction medium instead of expensive collidine used in the conventional methodology, resulted in a relatively high yield of TPFPPH〓.

本研究利用有机酸如氯乙酸催化吡咯和五氟化苯甲醛聚合,并以二甲苯替代传统方法所用的昂贵溶剂2,4,6-三甲基吡啶,获得了产率较高的TPFPPH〓。

The cesium fluoride-mediated N,N-diarylation of 4-(biphenyl-4-oxy)aniline with 4-fluoronitrobenzene and subsequent reduction of the dinitro intermediate led to a new triphenylamine-based diamine monomer, 4,4'-diamino-4-(biphenylyl-4-oxy)triphenylamine.

以氟化铯为媒介将此苯胺与 4-fluoronitrobenzene 进行芳香族亲核取代反应,随后再进行dinitro中间体的还原反应,制得ㄧ种新型具有三苯胺结构的芳香族二胺单体4,4'-diamino-4-(biphenylyl-4-oxy)triphenylamine。

METHODS: FRC and LCI were measured using a SF6 multibreathwashout technique while respiratory resistance and elastance were extracted from the input impedance obtained by forced oscillationtechnique in 18 children (3–8 yr) before and after oralpremedication with midazolam.

功能残气量和肺清除指数通过六氟化硫多次呼吸-洗出技术测定,而呼吸道的阻力和弹性回缩力则通过用力震荡技术中阻抗变化测定。研究共测定了18名儿童(3-8岁)使用咪唑安定前后的上述指标。

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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意,我建议我们在价格上大家各让一半。

After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.

一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。