长链烷氧取代金属卟啉的合成及催化性能研究

本文报道了一类长链烷氧取代金属卟啉化合物3的合成.研究了由化合物3与表面活性剂:十二烷基三甲基溴化铵所形成的混合胶束体系作为仿细胞色素P-450加氧酶模拟物对苯乙烯环氧化的催化活性.结果表明:在胶束体系中长链烷氧取代金属卟啉的催化效率优于对称四甲苯基金属卟啉,由此证实:混合胶束中,疏水内核提供的模拟酶的疏水微环境,在苯乙烯环氧化反应中起着重要作用.     

Hamiltonian Formulation of FRW Equations of Cosmology

We give a general Hamiltonian formulation of the Friedmann-Robertson-Walker (FRW) fundamental equations of a homogeneous and isotropic universe in the Standard Cosmological model. It gives some interesting insight on the 3-curvature of the universe, which is found to be obtained in terms of the scale factor (also termed radius of the universe) and its first derivative. It also leads to an easy determination of the Schrödinger equation for the (R) wave function of the universe, in the radiative era.     

EMG模型参数间的联系

通过色谱拖尾峰EMG数学模型的计算机数值计算, 建立了拖尾峰特征参数之间的三类不同性质的线性关系, 佐证并修正了一些经验公式, 提出了计算模型参数与保留时间之间线性关系的新方法。     

一种半经验的关联-预测活度系数的系统

提出一种半经验的关联-预测活度系数的系统。二元系的活度系数用一过量自由焓模型推算。该模型的模型参数从2个代数方程联立求解, 其一关联模型参数与γ^∞, 另一关联模型参数与(dγ-dx)x=0。γ^∞用MOSCED模型由纯组分性质关联。(dγ/dx)x=0用三维溶解度参数关联。用该系统对145组等温极性二元系作了预测, 对计算结果与实验值作了对比。F0T6R19     

A Class of Quasi-linear Equations in Coframe Gravity

We have shown recently that the gravity fieldphenomena can be described by a traceless part of thewave-type field equation. This is an essentiallynon-Einsteinian gravity model. It has an exactsphericallysymmetric static solution, that yields to theYilmaz-Rosen metric. This metric is very close to theSchwarzchild metric. The wave-type field equation cannotbe derived from a suitable variational principle by free variations, as was shown by Hehl and hiscollaborators. In the present work we are looking foranother field equation having the same exactspherically-symmetric static solution. Thedifferential-geometric structure on the manifold endowed with a smoothorthonormal coframe field is described by the scalarobjects of anholonomity and its exterior derivative. Weconstruct a list of the first and second order SO(1,3)-covariants (one- and two-indexedquantities) and a quasi-linear field equation with freeparameters. We fix a part of the parameters by acondition that the field equation is satisfied by aquasi-conformal coframe with a harmonic conformal function .Thus we obtain a wide class of field equations with asolution that yields the Majumdar-P apapetrou metricand, in particular, the Yilmaz-Rosen metric, that is viable in the framework of three classicaltests.     

Structure de Modeles de Polyesters 2.-Determination de la Purete optique par RMN 13C et H de Dibenzoyloxy 1,2 Propane,l,3 Butane et 3-Methyl 1,4 Butane a l'Aide de Reactifs chiraux

Abstract

The enantiomeric purity of a series of polyester model compounds has been assayed by NMR spectroscopy, using chiral lantha-nide shift reagents. The dependencc of proton and ¹³ C NMR spectra on concentration and temperature has been investigated.     

金属胶束超分子体系研究新进展

综述了近年来金属胶束超分子体系的研究新进展,着重介绍了本科研组应用金属胶束超分子体系模拟羧肽酶A、磷酸酯水解酶、细胞色素P-450等方面的研究成果。并对建立金属胶束超分子体系的动力学处理模型及催化水解反应的机理进行了讨论。     

杯芳烃化学的研究

杯芳烃作为超分子化学研究中一类重要的人工合成受体分子已受到广泛的关注,在化学、生物以及材料领域内显示出巨大的研究和应用前景。本文首先综述了杯芳烃在分子识别、模拟酶及分子自组装等方面的最新研究进展,然后介绍了作者从事杯芳烃研究十余年所取得的成果。     

On the Cosmological Implications of Irreversible Thermodynamics

The usual arguments related to the validity ofa thermostatical approach to several cosmologicalproblems are reviewed. It is seen that a nonequilibriumformalism is needed to solve conceptual problems in cosmology, such as the the generalization ofthe second law of thermodynamics. A cosmologicalnon-equilibrium formalism with a positive-semidefiniteentropy production is derived. The main features of a universe formulated under such a basis arestudied.     

McGhee和von Hippel模型的改进及其在反铂-多核苷酸作用体系 中的应用

用条件概率原理推导了处理小分子与大分子格子中n个残基结合,并且覆盖n+1个(n≥2)连续格子残基这一类型键合体系的方程式,并在反铂-polyN体系中作了应用。测得了结合常数、每个铂配合物所键合的核苷酸残基数以及交叉结合和非交叉结合的比值。