From X-ray measurements at 155K, the electronic deformation densities for 1,1,2,2-ethanetetracarbonitrile(1) and meso 2,3-dimethyl-2,3-bis(p-cyanophenyl)-1,4-butanedinitrile(2) have been obtained by multipolar refinement. Comparison of the maps does not show any indication of substitution...
Ion kinetic energy spectrometry using two triple sector instruments has been used for the study of the fragmentation of ionized 5-nonanone. Mixtures of isomeric [C 6 H 12 O] +. ions are formed in the first McLafferty rearrangement whose relative proportions depend on their internal energy....
Météo Chambéry更新内容 Nouveauté version 2.2 :- postez vos observations directement depuis l'application- publiez vos photos, soit depuis l'appareil photo, soit depuis vos photos existantes- recherchez et ajoutez des villes directement en étant géolocalisé (d'où la nouvel...
利尼西亚舒适弗兰天气 Météo Polynésie Fran aise更新内容 稳定性改进和错误修正。 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 应用下载排行榜 UC浏览器 109.95MB 查看 淘宝-天猫双11全球狂欢季 58.77MB 查看 QQ 307.03MB 查看 抖音 264.83MB 查看 相关信息 时间 2...
For every cases, we rely on a procedural approach based on progressive deformation, and eventually, on-the-fly refinement of the geometry just before the rendering stage.doi:10.1016/j.respe.2011.03.029Rivera DíazRoberto Carlogrenoble
eacutet&eacutes locales de l&039espace des hom&We consider in this paper the space of all orientation preserving and fixed point free homeomorphisms of the plane, endowed with the compact-open topology. Our main theorem asserts that this space is locally contractible. Then we give a ...
Next, the analysis of results from fittings to a set of spectroscopic measurements on niobium nitride, NbN, gives rise to a discussion about the interest of the method and about its limits.Jean-Louis FéméniasGérard Chevalcanadian journal of physics...
A number of aromatic derivatives of malonaldehyde have been studied by NMR ( 13 C, 1 H) and IR. These techniques show that these compounds exist in solution as Z enol formKirsch, G.Laboratoire de carbochimie et de synthèse organique, Université de Metz 57045 Metz‐Cédex, FranceMieloszyns...
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