2-巯基吡啶与钴(Ⅱ)、锰(Ⅱ)螯合物的合成及表征

以2—巯基吡啶为配体的钴(Ⅱ)、锰(Ⅱ)二种螯合物．经EDTA络合滴定分析、热重分析、红外光谱分析，确认了螯合物的组成与结构．结果表明：配体2—巯基吡啶是以S，N两原子为配体原子，与Mn(Ⅱ)以2：1、与Co(Ⅱ)以3：1的配比形成中性螯合物。     

毛细管电泳化学发光法用于铁形态的分析

以邻菲咯啉为配位剂,将毛细管电泳与鲁米诺-过氧化氢化学发光体系结合,成功的分离并检测了Fe(II)和Fe(III).在该体系中引入邻菲罗啉有以下优点:(1)有效的防止了Fe(II)被空气氧化的可能性.(2)提高了Fe(II)检测灵敏度.(3)提高了Fe(II)和Fe(III)的分离效率.在pH4.3的醋酸-醋酸钠缓冲溶液中,不到8min的时间即可实现Fe(II)和Fe(III)的分离.此法对Fe(II)检测的线性范围是1nmol/L～200nmol/L,对Fe(III)的线性范围是10nmol/L～330nmol/L,它们的检出限分别是Fe(II)68amol(3.4×10-9mol/L)和Fe(III)460amol(2.3×10-8mol/L).     

Photoelectrical performance of nanocrystalline TiO2 film electrode sensitized by Ru(II)-bipyridine complexes

Two kinds of Ru(II)-bipyridine complexes,cis-di(thiocyanate)bis(2,2′-bipyridyl-4,4′-dicarboxylate) ruthenium(II) andcis-di(thiocyanate)bis(2, 2′-bipyridyl-3, 3′-dicarboxylate) ruthenium(II), were utilized as the sensitizers to the nanocrystalline TiO₂ film electrodes. Study shows that the two dyes have quite different sensitization properties due to the strong steric effect of carboxyl groups. In addition, the pretreatment to nanocrystalline TiO₂ film electrodes with TiCl₄ was investigated, which is an effective way to improve the photoelectric conversion performances of sensitized TiO₂ electrodes.     

Actin and myosin during pollen germination

Actin and myosin from pollen tubes of Lilium davidii were studied by using immunoblotting, Dot_Blot and myosin Ca 2+_ATPase analysis. On immunoblotting of the total soluble pollen tube proteins, anti_α_actin antibody labelled a polypeptide approximately 43 ku, which is considered to be the actin of lily. The mRNA encoding actin in ungerminated pollen and germinated pollen were both undetectable in our experiments. A myosin exhibited Ca 2+_ATPase activity, with a native molecular weight of 460 ku has been identified by using immunoblotting. A polypeptide of about 205 ku and a polypeptide of about 20 ku were the heavy chain and a set of light chain of the myosin, which can crossreact with anti_skeletal muscle myosin heavy chain monoclonal antibody and anti_skeletal muscle myosin light chain (20 ku) monoclonal antibody, respectively. The Ca 2+_ATPase activities of myosin in crude extracts of germinated pollen were positively related to the growth rates of pollen tubes.     

理县红叶二级水电站藻类植物及环境评价

经过野外采样调查及室内鉴定统计,理县红叶二级水电站影响区有藻类植物９０种,属于５门２７科５０属,其中硅藻门种类占优势,藻类种群密度为４６．３２８７×１０＾４个／孔,硅藻门为２６．６６４×１０＾４个／Ｌ占优势。种群生物量为１．４２４９ｍｇ／Ｌ,绿藻门为０．８０９６ｍｇ／Ｌ占优势。     

Cu（Ⅱ）—稀土异双核配合物的研究

利用液相化学合成技术，成功制备了六种含草酰胺桥的新型异双核配合物Ｃｕ（ｏｘａｐ）Ｌｎ（ｐｈｅｎ）２（ＣｌＯ４）３（Ｌｎ：Ｙ，Ｃｅ，Ｐｒ，Ｅｕ，Ｇｄ，Ｙｂ）。基于元素分析、红外光谱、电子光谱、ＥＳＲ谱及变温磁化率等测试手段对这些异双核配合物进行了表征。测定了Ｃｕ（ｏｘａｐ）Ｇｄ（ｐｈｅｎ）２（ＣｌＯ４）３的变温磁 （４．２－３００Ｋ），对由自旋Ｈａｍｉｌｔｏｎｉａｎ算符Ｈ＝－２ＪＳ１．Ｓ２导出的磁方     

Crystal structure, magnetic and photoelectric properties of coordination polymer[ Co2（C3H4N2）4（ C10H2O8） ]n

The coordination polymer is designed and synthe-sized through the choice of organic ligand and coordina-tion geometry of metal ion as well as the control over theinfinite network topology structure, which usually con-tains both the characteristic of the organic molecules andmetal ions. So, it exhibits more singular function and haspotential application in optics, electrics, information, ca-talysis, medicament, metallurgy, novel material and lifesciences fields. And it has been the confluence m…     

血管紧张素Ⅱ及其受体在动脉粥样硬化中的作用

观察不同浓度血管紧张素Ⅱ及其受体在氧化低密度脂蛋白(OXLDL)内皮受体LOXI基因表达中的作用，且探讨其机制，应用反转录聚合酶链反应(RT-PCR)法。结果表明，血管紧张素Ⅱ能够上调LOXI的mRNA水平，并存在剂量依赖性应用Ⅰ型血管紧张素Ⅱ阻断剂Losartan能抑制血管紧张素Ⅱ对LOXI的上调作用、血管紧张素Ⅱ可显著上调LOXIl的基因表达，此作用是通过激活血管紧张素Ⅰ型受体实现的。     

[Cu(tet a)(NCS)2]的合成和晶体结构

单晶X-射线结构分析测得，标题化合物的分子式为C18H36N6S2Cu．在这个配合物中，围绕着Cu(II)原子有两种无序的配位几何，较小的组分占整个结构的43．7(9)％，该组分是中心对称的，其中心是四个氮组成的四方形，四方形的中心是与四个氮原子在同一个平面上的铜原子．较大的组分占整个晶体的56．3(9)％，是一个中心对称拉长的八面体．