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北京时间2016年1月8日凌晨,清华大学生命学院施一公教授研究组在《科学》(Science)就剪接体的结构与机理研究再发长文(Research Article),题为《U4/U6.U5 三小核核糖核蛋白复合物3.8埃的结构:对剪接体组装及催化的理解》(The 3.8 A Structure of the U4/U6.U5 tri-snRNP: Insights into Spliceos...
The recent discovery of active deep-sea hydrothermal systems venting high-pH fluids suggests that the prebiotic chemistry of the hydrothermal systems of early Earth may have been more diverse than pr...
This paper introduces the base-X notation and discusses the conversion between numbers of different bases. It also introduces the tri-value logic that is associated with the base-3 system.
It is very important to control any risk of instability of embankment during vacuum construction, the simulation vacuum preloading method using tri-axial apparatus is proposed to predict the behavior ...
通过扫描电子显微镜(SEM)和透射电子显微镜(TEM)试验观察, 发现Papilio maackii Ménétriés 蝴蝶鳞片具有多层薄膜堆结构. 通过磁控溅射法(MS), 在以单晶硅片为基底材料上, 采用ITO(90%In2O3+10%SnO2) 与Polymethyl Methacrylate (PMMA) 两种材料复制了仿蝴蝶鳞片多层周期结构, 并采用分光计对样品进行光学性能检测, 试验...
Abstract: In the present article we present a particular combination of boundary problems for the inhomogeneous tri-analytic equation: the Neumann-(Dirichlet-Neuman) problem and the (Dirichlet-Neumann...
we investigated the magneto-electroluminescence (MEL) in tri-(8-hydroxyquinoline)-aluminum based organic light-emitting diodes (OLEDs) through the steady-state and transient method simultaneously. The...
Localization methods reduce the path integrals in {\cal N} >= 2 supersymmetric Chern-Simons gauge theories on S^3 to multi-matrix integrals. A recent evaluation of such a two-matrix integral for the {...
Recent neutrino oscillation data hint that the smallest neutrino mixing angle 13 is possible to lie in the range 5◦ < ∼ 13 <∼12◦.
Tri(ethylene glycol) terminated short alkylchain thiols (TEGCnSHs) offer good potential for constructing ultra-thin protein-resistant monolayers because they have an alkylchain for forming a densely p...
Arsenic(III) tripyrazolinates and bismuth(III) tripyrazolinates of the type M(C15H12N2OX)3 [where C15H12N2OX = 3(2'-hydroxyphenyl)-5-(4-substituted phenyl)pyrazoline] have been synthesized by the reac...
Four trihalomethane (THM; CHCl3, CHBrCl2, CHBr2Cl and CHBr3) and two dihalomethane (DHM; CH2BrCl and CH2Br2) trace gases have been measured in air extracted from polar firn collected at the North Gre...
采用三元胺及二元胺混配方法进行[Co(N)5Cl]2+配合物的合成,分离出分别由三元胺配体和二胺配体构成的2个钴胺配合物。晶体结构测定表明由三元胺配体构成的钴胺配合物中,三元胺为N-(2-Aminoethyl)-1,3-propanediamine(记为2,3-tri),但并未以六胺形式配位[Co(N)6]3+,而以六胺五配位形式形成[Co(N)6Cl]2+,这
摘要 利用-维及二维核磁共振谱,如gCOSY和NOESY,对合成的5个[Co(3,3-tri)(ibn)Cl]^2^+几何异构体在溶液中的结构进行了解析,与柱色层方法分离出的五带配合物对照的结果是:b1=m4;b2=m2;b3=m1;b4=m3及b5=f3。利用量子化学从头算方法,从能量角度解释了配合物异构体的分布规律。
摘要 利用一维及二维核磁共振谱,如gCOSY和NOESY,对合成的4个[Co(3,3-tri)(amp)Cl]^2^+经式异构体的溶液结构进行了解析,与柱色层方法分离出的四带配合物对照的结果是:b1=m2;b2=m4;b3=m1;b4=m3。

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