由芳基锂盐、硫代甲酰胺和芳基格氏试剂一锅法合成了取代二芳基甲胺。
One-pot synthesis method of diarylmethylamines was investigated using aryl lithium salt, thioformamide and aryl Grignard reagent.
本文认为,“红崖天书”是产生于新石器时代,比殷代甲古文更原始的图画会意文字,或称古图形文字,它应该是一则古时的“公告”。
This paper thinks "the Red Cliff a Book from Heaven" produced New Stone Age, it was ancienter than inscriptions on bones or tortoise shells of Shang Dynasty.
下周回归的《星球大战:克隆人战争》在视觉上将有巨大的改变,因为克隆人士兵换穿上了我们在《西斯的复仇》中见到的他们所穿的二代甲。
Star Wars: the Clone Wars returns next week with a big visual change, as the Clone Troopers transition into the Phase 2 armor we saw them wearing in Revenge of the Sith.
目的为了有效控制甲型和乙型肝炎病毒的感染和发病,提高下一代人群免疫力。
Objective To control the infections and morbidities of hepatitis A and B and improve the immunity of population of the next generation.
方法:以2氨基4 ,5二甲氧基苯甲酸为原料,分别经过环化、氯代、取代等反应,合成了五种目标化合物。
The five quinazoline compounds were prepared by using 2 amino 4,5 dimethoxy benzoic acid as original material, which underwent ring closing, halogenation and substitution.
异丙甲草胺和乙草胺均属氯代乙酰胺类除草剂,它们在水田中活性极高。
Metolachlor and acetochlor are belong to acetanilide herbicides, they have high activity in rice field.
研究了在溴代十六烷基三甲铵存在下,8-羟基喹啉-5-磺酸与镓的络合反应。
The reaction of gallium with 8-hydroxyquinoline 5 sulfonic acid in presence of CTMAB has been studied.
新的17-卤代的19-去甲甾醇类,制备方法和中间体,它们作为药物以及含有它们的药物组合物。
Novel 17-halogenated 19-Nor steroids, method and intermediates for preparing same, use as medicines and pharmaceutical compositions containing same.
目的了解去甲万古霉素在脑膜炎模型中的脑脊液透过率及其他药代动力学参数。
Objective it is to investigate the filterability of Norvancomycin in cerebrospinal fluid and other pharmacokinetic indexes in meningitis models of rabbits.
阿维菌素品系选育至42代,抗性增长到8.7倍,甲氰菊酯品系选育至40代,抗性增长到68.5倍。
After 42 and 40 generations selection with abamectin and fenpropathrin, Tetranychus (cinnabarinus) developed 8.7 and 68.5-fold resistance to the two acaricides respectively.
光解N-甲氧基偕溴代亚胺化合物以高产率获得相应的腈,并在转变过程中小影响对常见脱水剂和卤化剂敏感的官能团。
Photolysis of N-methoxyimidoyl bromides leads to formation of the corresponding nitriles without affecting functional groups sensitive to ordinary dehydrating and halogenating reagents, in high yield.
欧巴代II(85系列)无色显示包衣增重标准差低于相同工艺条件下的标准无色羟丙甲纤维素基薄膜包衣。
In this study, Opadry II (85 series) Clear was shown to have lower coating weight gain standard deviations than a standard clear hypromellose based film coating.
国内首个二代病例确诊。卫生部上周五宣布,中国大陆内出现了首个甲型h1n 1流感病毒传播病例。
First domestic flu case confirmed. The a (H1N1) flu virus has been transmitted on the Chinese mainland for the first time, the Ministry of Health said on Friday.
在气相色谱上,乙酰乙酸甲酯、乙酰乙酸乙酯、3-氧代戊酸甲酯与醇在无任何催化剂存在下,发生酯交换反应。
Gas chromatography(GC) as a chemical reactor, methyl acetoacetate, ethyl acetoacetate, and methyl(3-oxo) pentanoate can undergo transesterfication with various alcohols without any catalyzers.
而新一代草酸二甲酯加氢催化剂采用了无铬配方,性能指标也优于一代技术。
In addition a chromium-free formula is applied to prepare new generation dimethyl oxalate hydrogenation catalyst, showing better performance than the former generation catalyst.
本文介绍中国第二代国内通信卫星——东方红二号甲(DFH-2A)的总体及分系统概貌。
This paper gives a brief description of the DFH-2A communication satellites which are the second generation of Chinese domestic communication satellites.
硫酸二甲酯是一种重要的化工原料,在有机合成中用于代替卤代烷作为甲基化剂。
Sulfuric acid dimethyl ester, one of the important chemical raw materials ACTS as the methylating agent in the organic synthesis for the purpose of replacing alkyl halide.
以溴代环己烷和苯甲酸乙酯为原料,经过两步反应合成了甲基丙烯酸二环己基苯甲酯。
With bromocyclohexane and ethyl benzoate as raw materials, dicyclohexylphenylmethyl methacrylate was synthesized by two steps.
由羊蹄甲树叶提取叶绿素并经皂化、铜代及成盐反应制备叶绿素铜钠,研究探讨了优惠提取工艺条件和反应条件。
The technology of preparing sodium copper chlorophyllin from Banhinia purpurea linn leaves was studied. The optimum technological condition was found.
随着20世纪20年代透明指甲油的发明,1926年美甲唯一的改变就是多了层简单透明的指甲油。
With the invention of clear nail polish in the 1920s, the only change for the 1926 look is just a simple layer of clear lacquer.
阿甲克斯也籍此于1970年代早期完成了从一支半职业队到连续几届欧洲冠军的转型。
With it, Ajax was transformed from a semi-professional side into consecutive European champions by the early 1970's.
伊曲康唑和特比萘芬有较好的药代学特性,特别是通过口服给药随血运达甲床,进而渗透进入甲板,起抑杀真菌效果。
With the good pharmacokinetic properties of itraconazole and terbinafine, by oral route effective concentration of the two drugs can be obtained in nail bed and then be diffused into nail plate.
对2个完整的三代家系和51个核心家系的系谱分析,发现瓣状甲的遗传特点与常染色体单基因显性性状一致。
Analyzing the data of 51 nuclear families and 2 families with 3 generations, it was found that petaloid toenail had the same hereditary characters as a dominant single-gene trait.
基因种系发生树表明近几年甲型流感病毒与90年代流行株存在基因特性不同的分支。
The phylogenetic tree showed that in recent years there existed a branch for influenza a virus of genetic characteristic different from that of epidemic strains in 1990s.
以2,4-二羟基苯甲酸甲酯为原料,经过氯代反应、水解反应、脱羧反应合成2,4-二氯间苯二酚。
The compound 2,4-dichlororesorcinol was obtained from the starting material 2,4-dihydroxybenzoate via chlorinated reaction, hydrolysis and decarboxylation.
以液态聚硫橡胶、异氟尔酮二异氰酸酯和扩链剂3,6 -二甲硫基-2 ,5 -二甲苯胺为原料,合成了不同硬段质量分数的聚硫硫代聚脲。
A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.
以液态聚硫橡胶、异氟尔酮二异氰酸酯和扩链剂3,6 -二甲硫基-2 ,5 -二甲苯胺为原料,合成了不同硬段质量分数的聚硫硫代聚脲。
A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.
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