Volume 13,Issue 6,1990 Table of Contents

1 EXPERIMENTAL STUDY ON HIGH TEMPERITURE DESULPHURIZER IN A FLUIDIZED BED FOR. BURNING COAL

Lu Xiaofeng Hang Zhijun Xu Dinfeng Xiao Chaowen Gong Xilin

1990, 13(6):1-8.

[Abstract](552) [HTML](0) [PDF 421.72 K](138)

Abstract:
论述了新型硅酸钙脱硫剂的成分筛选及其在沸腾炉内的变工况试验结果。试验表明,硅酸钙脱硫剂的最佳脱硫温度为950℃左右,与高硫无烟煤在沸腾床内的最佳燃烧温度(950—1000℃)相吻合;在Ca/S摩尔比小于2.0时,脱硫效率可达95%。

2 THE FUZZY OPTIMIZATION DESIGN OF BOX EXPANSION ARM OF CRANE TRUCK

Wang Caihua Wang Chengliang

1990, 13(6):9-18.

[Abstract](780) [HTML](0) [PDF 422.43 K](199)

Abstract:
In this paper the section sizes of box expansion arm of crane truck are optimized in order that the weight of the arm will be the lightest on conditions that strength, rigidity, stability and size constraints are satisfactory. The fuzzy factors which influence design and the fuzziness of constraint conditions are considered. The unsymmetry mode of fuzzy optimization is established and solved by the method of optimal level cut set. Examples show that the effect is notable.

3 A FAILURE CRITERION OF COMPOSITE ROCK

Yang Youkui Jiang Weimin

1990, 13(6):19-25.

[Abstract](711) [HTML](0) [PDF 378.93 K](289)

Abstract:
本文在假设各组分岩石遵循Mohr-Coulomb强度理论的基础上建立了复合岩石的破坏准则。所用“复合等效方法”使复合岩石的破坏准则由各组分岩石的强度参数(C_,φ_i)和几何参数(λ_i)确定,并由此论述了由复合岩石实验结果确定各组分岩石强度参数的方法。三轴实验结果表明该准则对描述复合岩石的强度特性具有相当高的精度,为成层岩体中的岩石工程计算提供了更加精确的方法。

4 AN ELLIPSOMETKIC STUDY OF POLYAN1LJNE FILMS GROWTH

Xie Shangfen Yang Ynru

1990, 13(6):26-30.

[Abstract](589) [HTML](0) [PDF 268.36 K](185)

Abstract:
The film growth of poliyaniline in perchloric, suilfuric and hydrochloric acid aqueous electrolyte are studied with ellipsometry. The growth rate and morphology of the deposited films of polyaniline depends on the anions in the electrolyte. The film deposited in perchloric acid aqueous solution is compact. In sulfuric or hydrochloric acid aqueous solutions the film initially is compact but subsequently deposited layers have porous, stucture.

5 PRESENT AND LOOK INTO THE FUTURE OF BIOTECHNOLOGY

Ye Jun

1990, 13(6):31-36.

[Abstract](1017) [HTML](0) [PDF 397.85 K](1629)

Abstract:
The article development discusses the present of biotechnology in the farming, livestock, food industry, medicoindustry, biomining, biochmic industry, environmental protection, biosource of energy, biomedical engineering, competitive state of biotechnology in America, Japan, Western Europe and other countries and the bright future of biotechnology.

6 DIGITAL SIMULATION OF HIGH VOLTAGE AC/DC PARALLEL SYSTEMS

Liao Qing Wen Weibing Ren Zhen

1990, 13(6):44-48.

[Abstract](627) [HTML](0) [PDF 271.07 K](1039)

Abstract:
The method of companion model is applied to the digital simulation of high voltage hybrid AC/DC systems for the first trme in this thesis.The mathematical model of the digital simulation of hybrid AC/DC systems is represented. This method can model the normal states, faults and games of faults of any hybrid AC/DC systems. The method has a series of advantages : saving the computation and the amounts of memory, high precision and fast calculation and it can be used with convenience. The simulation results of a hybrid AC/DC system arc in consistent with that of theoretical analysis. It shows that the mathematical model, the simulation method and the program in this thesis are correct.

7 THE ALGEBRATIC CRITERION OF THE UNCONDITIONAL STABILITY OF THE THIRD-ORDER LINEAR RETARDED DIFFERENTIAL DIFFERENCE EQUATIONS

Chen Junping Zhou Jin

1990, 13(6):54-56.

[Abstract](685) [HTML](0) [PDF 138.84 K](1065)

Abstract:
The sufficient and necessary conditions of the unconditional stability of the third-order linear retarded differential-difference equations with constant coefficients are given. The conditions are brief and practical algebratic criterion.

8 MAXIMUM PRINCIPLE AND NONTRIVAL SOLUTION FOR A STATIONARY WAVE EQUATION

Yang Jie

1990, 13(6):57-62.

[Abstract](834) [HTML](0) [PDF 161.11 K](1049)

Abstract:
The boundary-value problem of a non-linear equation is discussed. A necessary condition for existence of nontrival solution and a maximum priciple are proved.

9 MULTIPLE SOLUTIONS OF NONLINEAR INTEGRAL EQUATIONS OF HAMMERSTEIN TYPE AND ITS APPLICATIONS

He Chuaniiang

1990, 13(6):63-67.

[Abstract](496) [HTML](0) [PDF 184.94 K](777)

Abstract:
在讨论非线性Hammerstein型积分方程(*)φ(x)=integral from n=G to k(x,y)f(y,φ(y))dy,0

10 THE APPROXIMATING EXACT PENALTY FUNCTION METHOD

Fu Li

1990, 13(6):68-70.

[Abstract](579) [HTML](0) [PDF 122.74 K](800)

Abstract:
对于实际求解一般非线性规划问题,“恰当罚函数法”尚属一种未能实现的思想。本文得出的有关理论结果及其算法——“逼近恰当罚函数法”——使这一思想得以实现,并且在计算上不存在使用其它方法时所面临的数值困难。

11 THE METHOD AND ITS APPLICATION FOR COUPLED ANALYSING PLASTIC DEFORMATION OF ROLLING WORKPIECE AND ELASTIC DEFORMATION OF ROLLS

Wang Linyun Yin Xiaohui

1990, 13(6):79-85.

[Abstract](608) [HTML](0) [PDF 325.46 K](142)

Abstract:
A method for coupled analysing plastic deformation of rolling workpiece and elastic de'formaticn of rolls is developed. The interaction of plastic defo rmation of rolling workpice and elastic deformation of rolls is considered. The couple is formulated by setting up force equilibrium equation at the interface of the rolling workpiece and tne rolls. The plastic deformation of rolling workpiece is treated by the rigid plastic finite element method and the elastic deformation of rolls is treated by the boundary element method. The rolling presure, perunit. forward slip, neutral from angle obtained from coupled analysis are lower than those obta-ined rigid rolls. The results obtained from analysis show that the analytical accuracy can be heightened using the coupled ana-ytical methcd dveeloped for treatng rolling3proccss.

12 DEVELOPMENT AND EXPERIMENTAL ANALYSIS OF HYDRAULIC LOCK OF THE THINNEST COAL SEAM SHEARER

Tian BoYing Zhengxi

1990, 13(6):86-92.

[Abstract](394) [HTML](0) [PDF 355.73 K](226)

Abstract:
The structure and work theory of a new type of hydraulic lock of the thinnest coal seam shearer is described in this paper. Its performance tests have been done the test results show that the performance of hydraulic lock is satisfactory and can be fit for the needs of locking and floating of the cutting drum of the thinnest coal seam shearer

13 ANALYSIS OF OPERATING CONDITIONS FOR DIAGONAL MINE FANS

Ge Chunbo Xu Ruilong

1990, 13(6):93-98.

[Abstract](491) [HTML](0) [PDF 271.07 K](375)

Abstract:
We shall discuss the real opererating conditions of the mine fans . in the mine diagonal ventilation system and establish a set of mathematics model for analysing the real engineering to provide judgement for technical manage ment of mine ventilation.

14 AN EXPERIMENTAL STUDY OF DIAMETER-PRESSURE RELATIONSHIP OF CANNIE HEPATIC ARTERY

Liu Yuping Wang Gongrui Wang BochuFang Kaixian Tao zulai

1990, 13(6):106-110.

[Abstract](579) [HTML](0) [PDF 255.29 K](156)

Abstract:
The mechanical properties of the hepatic artery that is more than 0.1mm in diameter are initially studied in the paper. The equation D/D0= A' + B'p shows the relationship between the internal pressure p and the dimensionless parameter D/Do in physiological normal range. And elastio deformation constant of the hepatic artery is obtained. Uhder centai high pressure, the hepatic artery is obviously deformed and appeared to be vessel cirsoid.

15 DEVELOPMENT OF WORKING CASE MONITOR FOR INJESTION PUMP VN1T

Yang Mingshou Yang Jianjun Long Yuguang Deng Lixin

1990, 13(6):111-115.

[Abstract](509) [HTML](0) [PDF 326.39 K](190)

Abstract:
The device developed is a detecting system automatically monitoring the operation state of an infusion pump unit in oil fields. It provides drawings, real time display and timely print of the 42 operation parameters such as production rate and so on. Sound and light warnings are also available. This research project was honored the second prize of progress in science and Technolog in 1988 by the state education comission.

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