吡啶

The poly 2,6-pyridinediamine film was formed on the glassy carbon electrode by utilizing electropolymerization, which yielded an interface with amine groups for the assembly of thionine and colloidal Au.

在玻碳电极表面电聚合2，6-二氨基吡啶，利用硫堇、纳米金固载癌胚抗体，制得稳定性好、灵敏度较高、线性范围宽的电流型免疫传感器。

Two different Raman reporter molecules (4,4'-bipyridine and thiophenol), which served as respective labels for each type of antibodies, were selected, SERS has the advantage of a small line width of Raman bands and high sensibility. The presence of dual-analyte was established by distinguishing the corresponding labeled reporter's Raman spectrum.

采用不同标记分子苯硫酚和4，4'-联吡啶(4，4-Bipyridin)分别标记不同的免疫金溶胶，利用表面增强拉曼光谱谱峰较窄且具有较强的分辨率及高灵敏度的特点，通过对两种标记分子特征谱峰的判断识别所加入的两种抗原。

Ag-Au alloy nanoparticles; Surface Enhancement Raman Scattering; thiophenol; p-Aminothiophenol; 2; 2'-bipyridine 2; 2'-bpy

Ag-Au合金纳米粒子；表面增强拉曼散射；苯硫酚；对巯基苯胺； 2； 2'-联吡啶2； 2'-bpy

Uranium in the ore is separated and converted into U in HCl andcomplexed with TPC and a new type thoron reagent,2(phosphino-chloro-benzenediazo)-7 (disulfo-naphthyl-diazo)-naphthalene-1, 8 diol-3, 6 disulfonic acid.

铀在 0.5—1.4 mol/l盐酸中，用氯化十四烷基吡啶作增溶剂，铀与偶氮氯膦6，8-萘二磺酸-TPC形成的三元络合物具有极高的灵敏度ε_(705nm=1.6×10~5l·mol~(-1)·cm~(-1)和较好的选择性。

A computational result of RHF/LANL2DZ optimized structure and total energy shows that the isomers with C H…π structure have lower total energy, and that stability and isomeric preference of isomer are related to the C H…π interaction in the isomer.

用 RHF/LANL2DZ对该体系可能的异构体进行结构、能量优化，可能形成C—H…π相互作用的异构体具有较好的稳定性。C—H…π相互作用对含吡啶环的[CoN5Cl]^2+系配合物的异构体的选择性形成及其稳定性具有重要作用。

Thermodynamic analysis indicates that the formation of trimer is an exothermic and spontaneous process at low and room temperature.

热力学分析显示在低温和室温下，三聚体的形成是一个放热的自发过程，1，3，5-苯三甲酸与联吡啶通过氢键可以构建超分子，与实验结果一致。

Adenosine was used as the raw material, dissolved in triethyl phosphate and then esterified with thiophosphoryl chloride under 0~5℃ for 8h without water and oxgen, in alkaline condition provided by 2,6-dimethylpyridine, introducing thiophosphoryl ester to adenosine.Then superfluous triethylamine was added and reacted under 5℃ for 1h to synthesize rough 5'-AMPS.The unpurified product was appled to a DEAE Sephadex A-25 column and eluted with triethylammonium bicarbonate.

用腺苷为起始原料，溶解于磷酸三乙脂中后，在无水无氧环境中及2，6-二甲基吡啶提供的碱性条件下与三氯硫磷以0~5℃下发生酯化反应8h，将硫代磷酸酯引入腺苷，然后再与过量三乙胺在5℃下反应1h，合成粗产品，再用碳酸氢三乙胺作洗脱液，过DEAE Sephadex A-25凝胶柱纯化。

The optimum condition of spectrofluorimetric determination of uranyl ion in pyridine 2,6 dicarboxylic acid β cydodextrin system is studied.

研究了吡啶 2 ，6 二羧酸β环状糊精体系荧光分光光度法测定铀酰离子的最佳条件以及某些稀土共存离子对荧光体系的干扰，并应用于人工样品的测定。

Finding effective drugs to treat PAH is a problem needed to be resolved. The main purposes of this study therefore were:① To assess the significance of radionuclide ventriculography in the diagnosis of early cor pulmonale and cor pulmonale with right heart failure.② To assess the rule of hemodynamic changes in patients with cor pulmonale especially in those patients who had been in decompensatory phase.③ TO assess the correlation between mean pulmonary artery pressure and right ventricular ejection fraction in order to establish a equation for diagnosing PAH noninvasively.④ To assess the effects of nifedipine , captopril and combining nifedipine with captopril on the treatment of PAH.

本文对慢性肺心病、PAH的无创诊断和有效治疗两方面进行研究，其目的在于：①了解放射性核素检查对早期肺心病和肺心病合并右心衰竭诊断的意义；②了解肺心病病人尤其是失代偿期肺心病病人血流动力学的改变规律，了解平均肺动脉压与右室射血分数等的相关性，探索建立一个无创诊断PAH的回归方程，祈能提供今后临床使用；③观察硝苯吡啶、卡托普利和两药联用对PAP等血流动力学参数的影响。

Via comprehensive computations, the possibilities of vinylidene and allene intermediates were excluded, and the reaction mechanism was found to contain the following three steps:(1) gold-catalyzed cyclization to give the cyclic intermediate,(2) the cyclic intermediate undergoing a 1,3-H migration to give a more stable intermediate, with the assistance of water-cluster,(3) finially, the 1,2-H or 1,2-silyl migration occuring for generation of the observed product.

通过对各种可能的反应路径的进行计算和比较，排除了亚甲基卡宾和连二烯中间体的可能性，并确定该异构化反应机理包含以下三个步骤：（1）炔丙基吡啶反应在金催化条件下发生分子内的成环得到环状中间体；（2）环状中间体在水分子簇的协助下优先发生1，3-氢迁移反应，异构化得到更为稳定的中间体；（3）最后再进行1，2-氢迁移或是1，2-硅烷基团迁移即得到实验中所观察到的环异构化产物。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了