Guo Zhengkang Department of Mechanical Engineering
Abstract:本文在分析一辆三轴半挂车汽车列车的动态制动性能的基础上,建立了该列车的数学模型.本模型既考虑了道路-轮胎的摩擦状况,悬架的弹性特性,也考虑了车架的扭转变形.最后,运用数字计算机对该列车的动态制动过程和制动稳定性进行了预测和分析.分析的结果与实验数据是吻合的.
Yang Bingzhang Depertment of Physics Xie Quan Hunan Normal University
Abstract:This paper is concerned with the vibration frequencies of the beam carrying a concentrated mass. It is assumed that one end of the beam is hinged by a rotational spring with constant stiffness and the other end is free. By solving the frequency equation ,
Luo Enzhou , Huang Li , Zhao Lihua Department of Physics
Abstract:In this paper, Landau theory is used to investigate the structural phase transition on the W(100) surface induced by hydrogen adsorption. The vari ance of the lateral displacements of the top layer of W atoms With coverage and temperature is discussed and
Chen Benjing Wang Xiuqiong Material Test Center Department of Physics Su Yuchang , Yang Qiaoqin Material Test Center
Abstract:Diamond particles and films are grown by CVD. The samples are analysed by the SEM, X-ray diffraction, Raman spectrum and hardness test. The resuls obtained show that the sample is the diamond and the film is as hard as the natural piamond.
Zou Beiji Department of Computer Science
Abstract:Three dimensionaI(3D) space solid modelling is one of the most important problems in the computer graphlcs.It is not only the basis of true 3D graphic software, but also the key of the CAD/CAM techniques. But the basis of the 3D solid modelling is the ope
Zhou Youwen Department of Computer Science
Abstract:In this paper, the basic operations and important results of dual mathematical morphology are introduced.And the methods are developed for extracting all sorts of the characteristics of printed Chinese characters by the opening and the hit operation of th
Xiao Jian Southwest Jiaotong University
Abstract:In this paper, the parameterization of the controllers in the unity feedback configuration is presented. By using the MFD method, this parameterization ensures the properness of the controllers and the free parameters appear directly to be the coeffients
Zhang Xianming , Ma Huixian Department of Electrical Engineering
Abstract:In this paper, the parameter identificatfon of the pharmakoinetic models is studied by means of the modern control theory. Based on the experimental data for the white mouses to take the fluoride orally, the parameters for the five-compartment model are o
Yao Shouzhuo , Zhou Tiean Institute of New Materials
Abstract:Solution properties of the piezoelectric crystal are studied by using a transistorized oscillator. At the definite temperature, the crystal ceases to oscillate. Grounding the detection cell can improve the oscillation performances of the crystal and lower
Chen Xingqi , Wu Yaoxun , Bin Qjanfan , Cai Xiaope Department of Chemistry , Chemical Engineering
Abstract:合成了新型大孔schiff碱螯合树脂聚-N-(3-甲氧基水杨叉基)乙烯基苯胺(poly-N-(3-me-thyloxysalicylidene)Viny laniline,以下简称为PMSVA).探讨了母体结构,试剂质量此等合成条件对制得的树脂吸附容量的影响.在pH=2.5~5.0范围内PMSVA树脂对Cu(Ⅱ)具有较大的吸附容量和良好的吸附选择性,将其应用于光亮镀镍溶液中微量铜的除去,以及废水中微量铜(Cu~(2+)的回收,效果良好.
Yang Guifa , Peng Lixian , Kang Zhendong Department of Chemistry , Chemical Engineering
Abstract:新显色剂Br-BTAQ在吐温-80存在下,pH=3.4的缓冲介质内,与钴能形成紫红色的配合物,组成比1:4.其最大吸收在550nm处,摩尔吸光系数为7.2×10~4升·摩尔~(-1)·厘米~(-1),钴量在0-8微克/25毫升范围内服从比尔定律.应用本法测定茶叶,维生素B_(12)和水样中的钴,结果满意.
Xu Zhongxiu , Zhang Ruizhen , Xiao Duxuan Department of Chemistry , Chemical Engineering
Abstract:A new foaming separation technique is used to treat waste gases NO_x. In the foaming separation column the condition test is carried out with the urea solution containing A-912 mixted type surfactants. It is found that after treating once the absorption r
Tang Xun , Wang Xiaomei , Yang Ying Department of Chemistry , Chemical Engineering
Abstract:A quasi-homogoneous one-dimensional model of methanol synthesis is established for the four-stage adiabatic fixed bed and interstagc cold shot reactor. Based on this mathematical model, simulations are carried out on a digital computer. During the simulat
Chen Guangshen Dpeartment of Civil Engineering
Abstract:By means of the solving method which is different from those developed by Goyon-Massonnet and by R. E. Rowe, the accurate solutions are obtained for the differential equation of the deflection surface of the analogue anisotropic plates. The expressions fo
Zhou Xianyan , Zhu Zhiji Department of Civil Engineering
Abstract:本文建立了完整桩和各种缺陷桩的机械导纳数学模型.并用计算机分析了它们的导纳曲线基本特征及有关参数对导纳曲线共振峰频率的影响.在现有阻抗法的基础上,提出了用计算机拟合实测导纳曲线的方法以获得准确反映桩身缺陷的位置、范围和性质的有关参数.用瞬态激振的方法,借助于SD-375动态分析仪,对各种缺陷的钢筋混凝土模型桩进行了试验,结果表明,本文提出的方法是可行的.