变构

Complete chiral induction from enantiopure-DPEN to achiral bisphosphine ligand 3a was observed in solution, with the complex adopting a single, stable and non-fluxional (even at 70 ℃) configuration.

光学纯-DPEN在溶液中对非手性双膦配体3a产生完全的手性诱导，形成构型单一的稳定RuII络合物，即使在70°C下构型仍保持不变。

We focus on a particular class of subsets in the above topological space which is named support-bounded constructible subset as an analogue of constructible subsets in module variety and is invariant under derived equivalence.

我们研究了复形拓扑空间的一类特殊的子集合，称为支撑有界可构集，它是普通模簇上可构集在导出范畴上的类比并且是导出不变的。

In our research, the morphological and physicochemical properties of common corn starch granule and resistant starch granule were systemically studied using Rapid Visco Analyzer, Farinograph, Mixograph, TA-plus, Laser Particle Analyzer, Differential Scanning Calorimeter and Fourier Transform Infrared Spectrometer. And the influences of resistant starch on pasting properties of wheat flour and rheological properties of dough with different gluten strengh were investigated, so did effects on sensory and texture characteristics of staple food in northern China. These results will provide some theoretical basis for resistant starch widely using in food industry.

本文采用快速黏度分析仪、粉质仪、揉混仪、质构分析仪、激光粒度仪、差示扫描量热仪、红外光谱仪等先进测试仪器系统研究了抗性淀粉和普通玉米淀粉的颗粒形貌和理化性质，探讨了抗性淀粉对不同筋力小麦粉糊化和流变学特性及北方主食感官和质构特性的影响，为抗性淀粉在食品工业中的广泛应用提供了理论依据。

The influence of solvent and medium on the absorption spectrum and the equilibrium between azo tautomerism and hydrazone tautomerism was discussed.

讨论了溶剂和介质对各个染料紫外可见吸收光谱及偶氮式异构体与腙式异构体互变平衡的影响。

Complex 4 exists as a mixture of two isomers. The interconversion between the two isomers was studied by variable-temperature 1H NMR.

化合物4存在两种异构体，通过变温核磁研究了这两种异构体的相互转化。

For k≥1, an isometry φ between codes over Zsubscript P(superscript k+1 and codes over Z(subscript P^2) is introduced and used to give a generalization of the Gray map φ: Z(superscript n subscript 4)→F(superscript 2n subscript 2). Furthermore, by means of this isometry, the concept of negacyclic codes is extended to codes over the ring Zsubscript P(superscript k+1. A characterization of these codes in terms of their images under φ is given. It is also shown that the generalized Gray map image of the 1-P(superscript k-cyclic code is a distance-invariant quasi-cyclic code.

文章引入了Z下标 P(上标 k+1码和Z(下标 P^2)码之间的等距同构φ(k≥1)；利用φ把Gray映射φ：Z(上标 n 下标 4)→F(上标 2n 下标 2)推广为φ：；而且利用φ，负循环码概念被推广到Z下标 P(上标 k+1码，得到了1-P(上标 k-循环码；依据等距同构φ，给出了这些码的表示；也证明了1-P(上标 k-循环码在推广的Gray映射下的像是距离不变的准循环码。

Keywords: Phase transformation; Impact; Phase transformation Taylor's Bar; Constitutive model; Phase boundary

中文关键词：相变冲击；相变Taylor杆；相变本构；相边界

A new kind of state variable weight vectors can be constructed by means of the properties under some conditions.

首先讨论了状态变权向量的基本性质；然后，指出在满足一定的条件下基于这些性质可以由已知的状态变权向量构作新的状态变权向量。

Research on Coal-forming Environment and Sequence Stratigraphy in Coal Measures Strata;2. The results show:1, there were the differences between the characteristics of the coalification between the Taiyuan Formation vitrain and the Shanxi Formation vitrain which were formed in differencial coal-forming environment s, and the differ.

结果表明：在高煤级煤早期阶段，形成于不同成煤环境的太原组煤与山西组煤的煤化特征仍有差异，在第三次煤化作用跃变之后这种差异逐渐缩小消失；高煤级煤分别以第三次和第四次煤化作用跃变为界，呈现出阶段性演化的特征，每阶段的演化机理有所不同；第三次煤化作用跃变中大分子结构的演化以芳构化作用主为，第四次煤化作用跃变则以强烈的环缩合作用占优势。

Aimed at the problem of the salt bed wellbore creep and shrink under the drilling,based on the elasto-plastic mechanics theory and the head creep equation,the new formula of the control wellbore shrink rate was derived with in case of the plane strain and uniform in-situ stress,which was different from the old formula.

针对钻井过程中钻遇的盐层段井眼蠕变缩径问题，利用弹塑性力学理论，蠕变本构方程采用Heard蠕变方程，在平面应变和均匀地应力假设下，推导出控制井眼收缩的钻井液密度新公式，该公式与前人推导的公式不同。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！