升巨散对实验性血小板减少症的治疗作用研究

采用水提醇沉法将升巨散制成冲剂,对实验性血小板减少症的治疗,表明升巨散具有升高外周血小板数量之功效,差异显著(P<0.15).相继在出血时问、凝血时间和24h 血块收缩实验中,也间接证实本品有升高外周血小板数量之作用。又在骨髓象检查中,发现升巨散能提高骨髓之巨核细胞及血小板数量,差异显著。本品 LD_(50)及95%可信限为70.88±2.62g/kg。     

Nonlinear response of biophoton emission to external perturbations.

By considering an exciplex system consisting of collective molecules in interaction with both the 'pumping' fields and the biophoton fields, the two-level exciplex model and the three-level exciplex model are presented. They are useful for the investigation of the quasi-stationary behaviour of biophoton emission, and biophoton emission as a dynamic process in the presence of external perturbations. Our theoretical results predict a series of nonlinear effects, such as chaos, fractal behaviour, and non-equilibrium phase transition. These effects characterize the coherence nature of living systems. In our approaches, there are two important quantities f and x, which can be used to mark the working points of the two-level and three-level exciplex systems. All the influences of external perturbations on the exciplex systems, e.g. change of temperature, the addition of agents, exposure to light, etc., can be interpreted as shifts of the working points of the systems, leading to a diversity of nonlinear response of biophoton emission. In addition, the agreements of the theoretical results and the corresponding experimental observations on biophoton emission from biological systems in the presence of external perturbations are demonstrated.     

双核铕－邻甲基苯甲酸－邻菲罗啉三元配合物的晶体结构

双核铕－邻甲基苯甲酸－邻菲罗啉三元配合物的晶体结构王瑞芬，王明昭，金林培，蔡冠梁（北京师范大学化学系，１００８７５，北京；解放军防化指挥工程学院，１０２２０５，北京；第一作者，４４岁，女，副教授）关键词铕；三元配合物；晶体结构分类号Ｏ７４１．６；Ｏ６...     

Study on Approach for Computer-Aided Design and Machining of General Cylindrical Cam Using Relative Velocity and Inverse Kinematics

Cylindrical Cam Mechanism which is one of the best eq uipments to accomplish an accurate motion transmission is widely used in the fie lds of industries, such as machine tool exchangers, textile machinery and automa tic transfer equipments. This paper proposes a new approach for the shape design and manufacturing of the cylindrical cam. The design approach uses the relative velocity concept and the manufacturing approach uses the inverse kinematics concept. For the shape desig n, the contact points betw...     

Algorithm of graph isomorphism with threedimensional DNA graph structures

ResearchonDNAcomputingwasinitializedin1994 ,whenAdleman[1] proposedamethodofsolvingasmallinstanceoftheHamiltonianPathproblembyalaboratoryexperimentinvolvingDNAmolecules .Later,Lipton[2 ] demonstratedhowalargeclassofNP completeproblemscouldbesolvedbyencodingtheprobleminDNAmolecules .Inparticular ,LiptonshowedonefamousNP problem ,theso called“satisfiability”problem (SAT)andsubsequentlytheotherNP problemscouldbeencodedandsolvedusingmolecules .TheadvantagesofDNAcomputingareitsmassivepa…     

如何避免英文中的歧视性语言

歧视性语言是指一个社会中的强势群体把自己视为社会的规范和中心,在语言交际过程中,毫无必要地或不恰当地指出对方的性别、年龄、种族或民族等,将对方划入某一弱势群体,表示出对其的轻视、冒犯或侮辱.笔者在本文中就如何避免在英文交际的过程中使用歧视性语言作了论述.     

广义Hénon映射中浑沌现象

本文讨论广义Hènon映射Φ浑沌现象的存在性。我们用解析方法证明了当参数在一定范围时,映射Φ以集合S上的一个移位自同构σ为其子系统,其中S是一个双边无穷序列的集合,此时有浑沌现象。     

织物设计中的色彩搭配

本文以色彩构成理论为依据，找出小配色模纹和较大配色模纹的不同配色所产生外观效应的规律，应用色彩构成规律使织物组织的设计尽可能符合美学观点。     

混合精矿体系中方铅矿与黄铁矿浮选分离的矿浆电化学（Ⅰ）─—方铅矿表面丁基黄原酸铅的电化学还原动力学

采用恒电流极化法首次研究了方铅矿表面丁基黄原酸铅的电化学还原动力学行为，测定了丁基黄原酸铅电化学还原的动力学参数（如过电位、传递系数及交换电流密度），建立了还原反应的动力学方程，证实在方铅矿表面丁基黄原酸铅的电化学还原反应是一个不可逆电化学过程，过电位高达３０８ｍＶ。     

CH_3COONa·3H_2O-Na_2SO_4·10H_2O截面

用步冷曲线法和DSC法测定了CH_3COONa·3H_2O-Na_2SO_4·10H_2O截面,得到了体系的多温图。结果表明,此截面的两条三次结晶水平线的温度值分别为: 液+Na_2SO_4(?)Na_2SO_4·10H_2O+CH_3COONa·3H_2O_2:18.2℃; 液+CH_3COONa(?)Na_2SO_4+CH_3COONa·3H_2O:58.1℃。