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AN IMPROVED METHOD FOR PREPARING 2—ALKOXY—5—FLUORO—3H—4—PYRIMIDONE~△

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Chinese Chemical Letters 1993年第7期4卷 591-592页

作者： Chang Jun SUN Zai cheng chen Yi MENG Yi Gui WANG Peng XUE Jian Guo ZHANG Gui Xiang CUI department of Chemistry, shandong university, jinan 250100

In this paper, we report an improved method for preparing 2--alkoxy 5 fluoro--3H --4--pyrimidone from 2--chloro--5--fluoro--3H--4--pyrimidone and sodium alkoxide under normal pressure at reflux temperature. Some new c... 详细信息

关键词： ALKOXY AN IMPROVED METHOD FOR PREPARING 2 FLUORO PYRIMIDONE

Synthesis and Crystal Structure of Complex [Cdq3][Cd（qH）3]（ClO4）CH3OH （q=8-Quinolinolate, qH= 8-Quilinolinol）

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Chinese Journal of Structural Chemistry 2005年第8期 913-916+861页

作者： SHI Jing-Min② ZHANG Xia LU Jian-Jun chen Yu-Qin MA Jian-Ping LIU Lian-Dong (department of Chemistry, shandong Normal university, jinan 250014, china)

The mono-nuclear complex [Cdq3][Cd(qH)3](ClO4)CH3OH has been synthesized by 8-quinolinol and hydrated cadmium perchlorate in methanol solution. The crystal belongs to triclinic, space group P1 with a = 11.1449(15), b = 13.3334(18), c = 17.654(2) ?, α = 85.555(2), β = 88.497(2), γ = 75.681(2)°, V = 2534.1(6) ?3, Z = 1, C110H86Cd4Cl2 N12O22, Mr = 2448.41, Dc = 1.604 g/cm3, F(000) = 1232 and μ = 0.961 mm-1. The structure was refined to R = 0.0387 and wR = 0.0973 for 7775 observed reflections (I > 2σ(I)). In this crystal there exist two independent mono- nuclear complexes of [Cdq3]- and [Cd(qH)3]2+. Each cell contains two [Cdq3]- anions, two [Cd- (qH)3]2+ cations, two ClO4- anions and two methanol molecules.

关键词： crystal structure cadmium complex 8-quinolinol

The　Effect　of　the　CO（a^3П）　Vibrational　Population　on　the　CO（a^3П）＋　NO（X^2П）　Energy　Transfer　Reaction

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Chinese Chemical Letters 1996年第9期7卷 855-858页

作者： Chuan Pu LIU Xiang Yang LI Jing Zhong GUO Yue Shu GU (department of Chemistry,shandong university,jinan 250100)Xue Chu LI Guan Lin SHEN Hong chen (State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics CAS,P.O.Box 110, D department of Chemistry Shandong University Jinan 250100 State Key Lab. Molec. Reaction D. Dalian Inst. of Chemical Physics CAS P. O. Box 110 Dalian 116023

The improved beam sources CO(a,v≤4) and CO(a,v≤3) are produced in a beam-gas experiment by collision of CO2 with He (23 S) and Ar (3P0,2) *** energy transfer reaction of CO(a) with NO(x) mainly give NO(A,v).The vibrational didribution of CO(a) has a considerable effect on that of NO(A,v) and the vibrational distributions of NO(A,v) follow the energy gap law and the Franck -Condon (F-C) principle.

关键词： CO a~3 the NO

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共产国际、苏联与东北抗日斗争关系初探

山东大学学报（哲学社会科学版） 2002年第1期 92-97页

作者：陈桂香山东大学马列主义教学部山东济南250100

共产国际、苏联与中国东北抗日斗争的关系是其与中国抗日战争关系的重要组成部分。由于东北抗日斗争的特殊性并且随着国际反法西斯斗争形势的复杂变化，苏联在处理与东北抗联关系的问题上始终存在着相当大的矛盾。这使抗战时期共产国际... 详细信息

共产国际、苏联与中国东北抗日斗争的关系是其与中国抗日战争关系的重要组成部分。由于东北抗日斗争的特殊性并且随着国际反法西斯斗争形势的复杂变化，苏联在处理与东北抗联关系的问题上始终存在着相当大的矛盾。这使抗战时期共产国际、苏联与东北抗日斗争关系的发展鲜明地呈现出三个阶段，同时也使苏联对待东北抗日斗争表现出复杂的两重性。

关键词：共产国际苏联中国东北抗日斗争

Efficient fully-decoupled and fully-discrete explicit-IEQ numerical algorithm for the two-phase incompressible flow-coupled Cahn-Hilliard phase-field model

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Science china mathematics 2024年第9期67卷 2171-2194页

作者： Chuanjun chen Xiaofeng Yang School of mathematics and Information Sciences Yantai UniversityYantai 264005China department of mathematics University of South CarolinaColumbiaSC 29208USA

In this paper,an efficient fully-decoupled and fully-discrete numerical scheme with second-order temporal accuracy is developed to solve the incompressible hydrodynamically coupled Cahn-Hilliard model for simulating the two-phase fluid flow *** scheme is developed by combining the finite element method for spatial discretization and several effective time marching approaches,including the pressure-correction projection method for dealing with fluid equations and the explicit-invariant energy quadratization(explicit-IEQ)approach for dealing with coupled nonlinear *** obtained scheme is very efficient since it only needs to solve several decoupled,linear elliptic equations with constant coefficients at each time *** also strictly prove the solvability and unconditional energy stability of the scheme,and verify the accuracy and stability of the scheme through plenty of numerical examples.

关键词： finite element method decoupled scheme two-phase fow Cahn-Hilliard equation Navier-Stokes equations energystability

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汉代诸子论吏治与治吏

山东师范大学学报（人文社会科学版） 2002年第4期47卷 66-71页

作者：陈新岗山东大学历史文化学院山东济南250100

官吏是封建国家各项政策的具体执行者。因为政策执行情况的好与坏 ,直接关系着皇朝的长治久安 ,所以治吏便成为治国的很重要的一方面。汉代诸子通过对两汉各个时期吏治状况的论述 ,深刻揭露了官官相护、贪污奢侈、对劳动人民的中间盘剥... 详细信息

官吏是封建国家各项政策的具体执行者。因为政策执行情况的好与坏 ,直接关系着皇朝的长治久安 ,所以治吏便成为治国的很重要的一方面。汉代诸子通过对两汉各个时期吏治状况的论述 ,深刻揭露了官官相护、贪污奢侈、对劳动人民的中间盘剥等吏治腐败现实。在此基础上 ,他们又纷纷提出相应的治吏主张 ,如打击贪污腐败、加强法律监督。

关键词：汉代诸子吏治思想治吏与治国

New Insight into the Flexoelectricity in the View of Mechanics of Materials:Prismatic Beams Subjected to Bending

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Acta Mechanica Solida Sinica 2024年第4期37卷 555-569页

作者： Xu Yang Lingling chen Shengyou Yang department of Engineering Mechanics School of Civil EngineeringShandong UniversityJinan250061China

Flexoelectricity is a fascinating electromechanical phenomenon that occurs in non-homogeneously deformed dielectric *** piezoelectricity,the flexoelectric effect is highly dependent on both the material scale and the deformation *** several theoretical models have been proposed to explain the mechanism of flexoelectricity,these models can be rather complicated for those who are interested in studying the *** paper aims to simplify the understanding of flexoelectricity by focusing on the bending behavior of a prismatic dielectric beam from a mechanics of material *** avoid using complicated mathematical formulations based on continuum mechanics,including advanced tensor algebra and calculus of *** formulation clearly explains how inhomogeneous deformations and material size affect the electromechanical coupling,changing the effective bending stiffness,deflection,and rotation angles of a bending *** hope this paper can help undergraduate students and researchers,who are unfamiliar with the electromechanical coupling in flexoelectricity,to develop an understanding of this phenomenon and encourage further research in this area.

关键词： bending formulation dielectric

Apoptosis of hepatoma cells SMMC-7721 induced by Ginkgo biloba seed polysaccharide

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World Journal of Gastroenterology 2002年第5期8卷 832-836页

作者： Gui-Wen Yang Li-Guo An department of Biology,shandong Normal university,jinan 250014,shandong Province,china Qun chen department of Biology & Chemistry,Huainan Teachers College,Huainan 232001,Anhui Province,china department of Biology Shandong Normal University Jinan 250014 Shandong Province China.

AIM: To study the apoptosis of hepatoma cells SMMC-7721induced by polysaccharide isolated from Ginkgo biloba ***: Ginkgo biloba seed polysaccharide (GBSP) wasisolated by ethanol fractionation of Ginkgo biloba seed andpurified by Sephadex G-200 chromatography. The purity ofGBSP was verified by reaction with iodine-potassium iodideand ninhydrin and confirmed by UV spectrophotometer,cellulose acetate membrane electrophoresis and Sepharose4B gel filtration chromatography. The Scanning ElectronMicroscope (SEM) and Flow Cytometrv (FCM) were used toexamine the SMMC-7721 cells with and without GBSPtreatment at 500 mg/ml for 36 ***: GBSP product obtained was of high purity withthe average molecular weight of 1.86 × 105. Quantitativeanalysis of SMMC-7721 cells in vitro with FCM showed thatthe percentages of G2-M cells without and with GBSPtreatment were 17.01±1.28 % and 11.77±1.50% (P＜0.05),the debds ratio of the cells were 0.46±0.12 % and 0.06±0 .06 %(P＜0.01), and the apoptosis ratio of cells was 3.84±0 .55 %and 9.13±1.48 %(P＜0.01) respectively. Following GBSPtreatment, microvilli of SMMC-7721 cells appeared thinnerand the number of spherical cells increased markedly. Mostsignificantly, the apoptosis bodies were formed on andaround the spherical cells treated with ***: GBSP could potentially induce the apoptosisof SMMC-7721 cells.

关键词：银杏籽多糖肝癌扫描电镜 SMMC-7721细胞细胞凋亡

STUDIES ON THE POLYSILANE CONSISTING CYCLODISILAZANE UNITS IN THE MAIN CHAIN

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Chinese Journal of Polymer Science 1989年第1期7卷 31-37页

作者：杜作栋陈剑华韩同珍 department of Chemistry Shandong University

Since the reactivity of Me_2SiCl_2(Ⅰ) and ■(Ⅱ) are very different. it is difficult to cocondensate the above two monomers with sodium in general Wurtz reaction. We have proposed a modified method to prepare copolymer containing permethylpolysilane segments and cyclodisilazane units by reaction of (Ⅱ)with Na at first, then adding (Ⅰ) into the mixture to proceed with further reaction.The obtained copolysilanes are pale yellow elastic substance and soluble in common solvents. The amounts of N in the copolymers are influenced by the operating conditions of the synthetic method. The resultant products were characterized by IR, UV, NMR, and elementary analysis. The highest molecular weight determined by gel permeation chromatography is 60000.

关键词： Cyclodisilazane Polysilane Polycarbosilanes