根据拼音写出相应的词语。①苍黄的天底下,远近横着几个xiāo suǒ___萧索的荒村,没有一些活气。②二是说明读书的方法,不要固执一点,yǎo wén jiáo zì___,而要前后贯通,
The stereochemistry of the electroreduction of the two geometrical isomers of methyl 1-bromocyclopropane 1,2-dicarboxylate has been investigated: - for the trans isomer, electrolysis carried out in the presence of NH 4 + ions give rise to a 90% retention ratio while 90% of inversion is ...
Conformational differences between C- and O-glycosides: the a-O-Man-(1 ! 1)- b-Gal/a-C-Man-(1 ! 1)-b-Gal case--a decisive demonstration of the importance of the exo-anomeric effect on the conformation of glycosides. Chem. Eur. J. 2000, 6, 1035 - 1041....
阅读下面一段话,按要求作答。 清源山奇jué( )秀美,让人叹为观止;泉州湾广mào( )无垠,令人心胸宽广;而那蜿蜒曲折的晋江,带着泉州人的淳朴、勤劳和“爱拼
Lancôme - Trésor Midnight Rose最新版截图 # Lancôme - Trésor Midnight Rose最新版 版本:1.0 Lancôme - Trésor Midnight Rose更新内容 优化体验,增强稳定性。 更多 网友评论更多 下载豌豆荚,参与网友评论互动 暂无评论 相关信息 时间 2018/12/28 17:59...
The results obtained during this study are compared to those obtained from the reduction of the corresponding ketones by LiAlH4. [Journal translation]Jean-Claude RicherClaude Lamarrecanadian journal of chemistry
The results obtained as well as the rate constants for neutral or acid catalysed addition always reveal a slight preference for thetrans-isomer (× 2.4). This result agrees with the proposal that preferential equatorial attack of a nucleophile is caused by conformational factors related to a ...
This article has no associated abstract. ( fix it )Nanowerk SpotlightNano LettersBy . Copyright © NanowerkCopyright © NanowerkRevue Thomiste
With this approach the asymptotic state is solution of a minimization problem. For practical applications an approximate problem is introduced consistently with a spatial discretization. In this framework, the only stationary points of the functional to minimize are the global minima....
Subretinal or preretinal neovascularisation may be occasionally observed during the evolution of certain forms of uveitis. Subretinal neovascularisation commonly begins at the level of the chorioretinal uveitic scars. Consequently, the alteration of the retinal pigment epithelium-Bruch's membrane-chorio...