Study on Corporate Governance of Chinese State-Owned Enterprise Groups

20世纪80年代后期推行的国有企业集团化改造并没有达到“做大做强”的结果，仍存在着行政干预残存、组织结构混乱、单纯追求规模扩充而轻视营利能力、盲目追求多元化而缺乏核心竞争力、企业家精神缺乏等问题。而问题的根源就在于国有企业集团公司治理上的缺陷。理论上，传统的公司治理所要解决的是所有权和经营权分离条件下的委托代理问题，以实现保护所有者利益的目标。但现代的公司治理目标不仅要实现股东利益的最大化，而且还要实现其他公司利益相关者的利益最大化。这就对企业集团的公司治理提出了更高的要求，因此探究国有企业集团如何建立法人治理结构及机制成为企业界和理论界亟待解决的问题。为了对上述问题进行阐释，本研究主要采用了...The state-owned enterprise collectivization that were carry out in 1980 later periods had not certainly achieved the object of "to be bigger and stronger" .The problems such as administrative intervention surviving、organizational structure chaos、to pursue scale expansion but ignore the profit ability、to pursue multiplication without the core competitive ability、entrepreneurial spirit absence and s...学位：工商管理硕士院系专业：管理学院高级经理教育中心（EMBA项目）_高级管理人员工商管理硕士(EMBA)学号：X20031500

Review of sea anemones compound and bioactivity

海葵(sea anemone)又名海菊花,多指腔肠动物门(Coelenterata)珊瑚虫纲(Anthozoa)海葵目(actiniaria)动物。海葵一般分为爱氏海葵科、链索海葵科、细指海葵科、投海葵科、固边海葵科和绿海葵科等6科37种[1]。海葵体型大多呈圆筒状,触手以辐射对称状在口周围形成数轮,广泛分布在热带和温热带海域,主要固着在海中岩石上或泥沙中。我国海域均有分布

基于自动化技术的大学生腧穴压痛知觉阈调查

压痛阈(pressure pain threshold,PPT)是引起身体疼痛的按压力度,压痛知觉阈(pressure pain consciousness threshold,PPCT)是刚能感觉到疼痛时的按压力度。压痛知觉阈常简称为压痛阈,相对的有压痛耐受阈,即刚超出对压痛的耐受时施加的按压力度。按压力度与按压物触端的质地、按压速度、接触面积、按压力、局部压强均有关。本文报道运用自制自动化按诊装置[1,2]对人体多个部位的腧穴

Synthesis and Characterization of [Ni(Hlact)_2(phen)]·2H_2O and Its Interaction with BSA Studied by Fluorescence Spectroscopy

利用溶液法合成了配合物[nI(HlACT)2(PHEn)]·2H2O(1),并对该配合物进行了元素分析、红外光谱和X-射线单晶衍射表征。通过荧光光谱法研究了不同温度下配合物1与牛血清白蛋白相互作用时的荧光强度的变化,计算了在不同温度下,配合物1与牛血清白蛋白(bSA)的结合常数、结合位点数以及热力学函数,并进一步讨论了配合物1与bSA相互作用时的作用力类型和两者之间的距离。结果表明,配合物1对牛血清白蛋白的荧光猝灭为静态猝灭过程,它与牛血清白蛋白的相互作用有一个位点,结合常数的平均值5.06x105l·MOl-1,作用距离为2.35 nM,相互作用力表现为氢键和范德华力。The compound [Ni(Hlact)2(phen)]·2H2O is synthesized in the solution and fully characterized by elemental analysis,IR and X-ray structural analyses.The interaction of Bovine Serum Albumin(BSA) and [Ni(Hlact)2(phen)]·2H2O at different temperatures are investigated with fluorescence spectra.The binding constant,binding sites and thermodynamic functions are calculated at different temperatures.The binding force and distance are discussed for BSA with complex 1.In the result,the model of fluorescence quenching is considered as static quenching process based on Stern-Volmer equation.The binding constant and binding sites are calculated for BSA and [Ni(Hlact)2(phen)]·2H2O as 5.06 ×105L·mol-1 and 2.35nm respectively.Parameters of thermodynamic functions are calculated and the interaction is determined as hydrogen bonding and van der Waal interactions between BSA and complex.国家自然科学基金(No.21073150)资助项

Solid and solution structural studies of dimeric and tetrameric molybdenum(VI) malate complexes

Reactions of potassium molybdate with racemic malic acid (H(3)mal = C4H6O5) result in the isolation of two mesomeric molybdenum malate complexes K-8[(MoO2)(2)O(R-mal)(2)][(MoO2)(2)O(S-mal)(2)]center dot 4H(2)O 1 and (HiM)(2)K-6[(MoO2)(4)O-3(R-mal)(2)][(MoO2)(4)O-3(S-mal)(2)]center dot 8H(2)O 2. Complex 1 belongs to the monoclinic system, space group C2/c with a 14.8637(3), b = 6.9544(1), c = 19.6783(5) angstrom, beta = 100.08](2)degrees, V = 2002.70(7) angstrom(3), M-r = 1452.88, Z = 2, F(000) = 1416, T = 173 K, D-c = 2.409 g/cm(3), mu(MoK alpha) = 2.167, R = 0.0283 and wR = 0.0733. 2 is of triclinic system, space group P (1) over bar with a = 8.7707(2), b = 9.3310(3), c = 17.9093(7) angstrom, alpha = 83.781(3), beta = 85.626(2), gamma = 84.822(2)degrees, V = 1447.84(8) angstrom(3), M-r = 2160.68, Z = 1, F(000) = 1048, T = 173 K, D-c = 2.478 g/cm(3), mu(MoK alpha) = 2.230, R = 0.0234 and wR = 0.0584. 1 is the first isolated dinuclear molybdenum(VI) malato complex in 1: 1 molar ratio. The molybdenum atoms in the two complexes are six-coordinated in an approximately octahedral geometry. Two malates coordinate tridentately with the Mo atom via their alpha-alkoxy, alpha-carboxy and alpha-carboxy groups in 1and 2. beta-Carboxy group in 2 further links with the other two Mo atoms to give a tetrameric unit. The solution I H and C-13 NMR spectra indicate that dimeric malate molybdenum in I dissociates partly in solution and exists in an equilibrium with tetrameric species, while 2 is stable and retains its tetrameric structure without any dissociation

柠檬酸镍(Ⅱ)配合物的合成、光谱和晶体结构

在弱酸性介质中，氯化镍和柠檬酸铵反应可得到镍水合离子与二聚柠檬酸镍配离子的加合配合物（ＮＨ４）［Ｎｉ（Ｈ２Ｏ）６］［Ｎｉ（Ｈｃｉｔ）（Ｈ２Ｏ）２］４·１０Ｈ２Ｏ１。该配合物的晶体属三斜晶系，空间群为Ｐ１，晶胞参数：ａ＝９．７２７３（９），ｂ＝１２．０３４（２），ｃ＝１３．３４８（２），α＝６３．５４（２），β＝８８．４５（１），γ＝８６．２８（１）°，Ｖ＝１３９５．９（３）３，Ｚ＝１，配合物的阳离子为两个铵离子和一个六水合镍离子，阴离子由两个二聚柠檬酸镍［Ｎｉ（Ｈｃｉｔ）（Ｈ２Ｏ）２］２－２组成。在不对称的配阴离子中，两个柠檬酸分别以羟基、α－羧基和一个β－羧基同第一个镍配位，剩下的β－羧基作为桥基同另一个镍配位形成二聚体

新型手性修饰剂的设计合成

国家自然科学基

苯硫酚对固氮酶催化活性的影响

研究了苯硫酚对棕色固氮菌固氮酶催化底物还原活性的影响。结果表明:当反应体系中固氮酶钼铁蛋白与苯硫酚的摩尔比为1:4时,固氮酶的乙炔还原活性比对照组下降了62.3％,下降的幅度随着苯硫酚浓度的升高而增大;但在乙炔存在的情况下,固氮酶的放H_2活性随着苯硫酚的浓度的升高而升高。在氩气氛下,苯硫酚浓度的升高对固氮酶放H_2活性的影响不明显。这一现象有可能是由于苯硫酚取代与铁钼辅基的Fe_1原子连接的半胱氨酸的巯基而引起的

钼酸盐柠檬酸盐络合物及有机酸对棕色固氮菌生长的影响

将经过0.9%NaCl溶液处理8h的棕色固氮菌(AzotobactervinelandiiOP)作为菌种分别接入Burk′s培养基和用不同有机酸替代柠檬酸三钠或用不同等摩尔的钼络合物替代钼酸钠的各种改良的Burk′s培养基中,分别测定菌体生长曲线和固氮活性.结果发现,与Burk′s培养基相比,以高柠檬酸、苹果酸、马来酸替代柠檬酸三钠或以K6[Mo2O5(cit)2]·5H2O、K4[Mo2O5(Hcit)2]·4H2O和Na2[MoO2(Hcit)]·3H2O替代柠檬酸三钠和钼酸钠的培养基能促进菌体的生长;以乙醇酸替代柠檬酸三钠的培养基则会抑制固氮菌的生长;各种培养条件下菌体细胞的C2H2还原活性表现了类似的规律.讨论了固氮酶活性中心FeMoco在装配过程中钼的可能运输方式和装配机理