药用狗牙花的单萜吲哚生物碱类成分

目的:研究药用狗牙花(Ervatamiaofficinalis)中的生物碱类成分.方法:采用硅胶、Sephadex LH-20、C_(18)键合硅胶、HPLC制备等色谱方法进行分离纯化,用波谱学和化学方法鉴定化学结构.结果:用体积分数为95%的乙醇提取药用狗牙花枝叶,分离鉴定了9个单萜吲哚生物碱化合物,分别为lirofoline A (1)、lirofoline B (2)、lochvinerine (3)、洛柯碱(4)、去甲马枯素B (5)、16-表-去甲马枯素B (6)、16-表-老刺木碱(7)、老刺木碱(8)及14,15-didehydro-16-epi-vincamine (9).结论:化合物1～7为首次从药用狗牙花中分离得到,并得到化合物1和3的单晶X线数据.     

蒙药植物耧斗菜总生物碱的提取与鉴定

提取蒙药用植物耧斗菜的总生物碱,并对其进行定性检测与结构鉴定。采用超声波辅助提取法提取耧斗菜总生物碱,通过4种沉淀试剂反应定性检测生物碱,用气相-质谱（GC-MS）联用技术进行结构鉴定。结果发现耧斗菜总生物碱提取液对4种生物碱定性试剂均有阳性反应,生物碱含量为0.155 mg/g;从耧斗菜提取物中鉴定出2种希夫碱类化合物,分别是酰腙类生物碱2,6-二甲氧基苯甲醛氨甲酰腙和酰肼类生物碱2-(3-对氯苯氧)N-(-2,4二甲氧基苄叉)乙酰肼。耧斗菜富含有生物碱类化合物,在生物碱提取开发利用方面有较好的应用前景。     

生物碱的电分析化学研究

文章介绍了利用电分析方法对生物碱的分析与研究。     

尼古丁与茜素红显色反应的研究

研究并确立了尼古丁与茜素红的显色反应条件.尼古丁与茜素红在水中发生显色反应,其反应产物的λmax=525nm.尼古丁的浓度在0～80mg L范围内服从比耳定律;表观摩尔吸光系数为6.84×103L·mol-1·cm-1;相对标准偏差为1.2%(n=9);回收率符合要求.     

Fundamentals of the analytic network process — Dependence and feedback in decision-making with a single network

The Analytic Network Process (ANP) is a multicriteria theory of measurement used to derive relative priority scales of absolute numbers from individual judgments (or from actual measurements normalized to a relative form) that also belong to a fundamental scale of absolute numbers. These judgments represent the relative influence, of one of two elements over the other in a pairwise comparison process on a third element in the system, with respect to an underlying control criterion. Through its supermatrix, whose entries are themselves matrices of column priorities, the ANP synthesizes the outcome of dependence and feedback within and between clusters of elements. The Analytic Hierarchy Process (AHP) with its independence assumptions on upper levels from lower levels and the independence of the elements in a level is a special case of the ANP. The ANP is an essential tool for articulating our understanding of a decision problem. One had to overcome the limitation of linear hierarchic structures and their mathematical consequences. This part on the ANP summarizes and illustrates the basic concepts of the ANP and shows how informed intuitive judgments can lead to real life answers that are matched by actual measurements in the real world (for example, relative dollar values) as illustrated in market share examples that rely on judgments and not on numerical data. Thomas L. Saaty holds the Chair of University Professor, Katz Graduate School of Business, University of Pittsburgh, Pittsburgh, PA, and obtained his Ph.D. in mathematics from Yale University. Before that he was a professor at the Wharton School of the University of Pennsylvania for ten years. Prior to that he spent seven years at the Arms Control and Disarmament Agency in the State Department in Washington, DC, that carried out the arms reduction negotiations with the Soviets in Geneva. His current research interests include decision-making, planning, conflict resolution and synthesis in the brain. As a result of his search for an effective means to deal with weapons tradeoffs at the Disarmament Agency and, more generally, with decision-making and resource allocation, Professor Saaty developed The Analytic Hierarchy Process (AHP) and its generalization to dependence and feedback, the Analytic Network Process (ANP). He is co-developer of the software Expert Choice and of the software Super Decisions for decisions with dependence and feedback. He has authored or co-authored twelve books on the AHP/ANP. Professor Saaty has also written a number of other books that embrace a variety of topics, including Modern Nonlinear Equations, Nonlinear Mathematics, Graph Theory, The Four Color Problem, Behavioral Mathematics, Queuing Theory, Optimization in Integers, Embracing the Future and The Brain: Unraveling the Mystery of How It Works. His most recent book is Creative Thinking, Problem Solving & Decision Making. The book is a rich collection of ideas, incorporating research by a growing body of researchers and practitioners, profiles of creative people, projects and products, theory, philosophy, physics and metaphysics...all explained with a liberal dose of humor. He has published more than 300 refereed articles in a wide variety of professional journals. He has been on the editorial boards of Mathematical Reviews, Operations Research, Naval Research Logistics Quarterly, Mathematical and Computer Modeling, Socio-Economic Planning Sciences, Applied Mathematics Letters, and several others. He also served as consultant to many corporations and governments.     

微粒的夫琅和费衍射

本实验是用微米数量级的不透明颗粒与光的相互作用,产生小角度夫琅和费衍射和干涉图样,可以通过图样照片来测定微粒的几何结构。     

几种求最少混合变量的原理和方法

网络图论已经证明，对于无独立电源的松驰网络，最少混合变量数等于网络的拓扑自由度．但是对于存在独立电源和／或非松驰网络，如何求最少混合变量，还是一个有待进一步探讨的问题．因此提出三种求最少混合变量的原理和方法，以提高混合变量方程的实用性．     

基于新功能单体的苯酚分子印迹聚合物的制备及其性能研究

 合成了一种新型功能单体1-苯基-3-甲基-4-甲基丙烯酰基-5-吡唑酮(PMMP).采用牺牲硅胶法,通过正交试验设计,从功能单体的用量、交联剂的用量和致孔溶剂的种类3个因素各取4个水平分别合成了16个苯酚分子印迹聚合物及相应的非印迹聚合物.平衡吸附实验表明正交设计优化条件下得到的印迹聚合物MIP17具有较大的吸附容量和较好的印迹效果.对MIP17进行了混合标准样品的选择性及实际样品的应用研究,结果表明应用该新功能单体制备的苯酚分子印迹聚合物具有较好的选择分离性能和一定应用潜能.     

Preparation and investigation of the tribologieal behavior of FPUOH self-assembly thin films

用已二酸和乙二醇在一定的条件下通过酯化和缩聚两步反应合成聚己二酸乙二醇酯(PEA),测所得聚酯二元醇的酸酯(Av)和羟值(Qv),得到合成聚氨酯大分子单体的原料.聚已二酸乙二醇酯(PEA)与等量的甲苯-2,4-二异氰酸酯(TDI-100)反应,加入十三氟-1-辛醇封端,得到含氟聚氨酯大分子单体(FPUOH).利用分子自组装技术在玻璃基片表面制备含氟聚氨酯薄膜,对其进行结构表征和性能测试.亲水性测试结果表明,自组装薄膜与水的接触角为76.8°,证明了自组装薄膜制备的成功.微摩擦测试结果表明,含氟聚氨酯大分子自组装薄膜修饰的基底具有很好的减摩润滑效果,当载荷为400 mN时,自组装薄膜的稳定摩擦系数达到0.09,适合作为轻载荷下的润滑防护保护膜.