杂志简介:《重庆大学学报》杂志经新闻出版总署批准,自1960年创刊,国内刊号为50-1044/N,是一本综合性较强的工业期刊。该刊是一份月刊,致力于发表工业领域的高质量原创研究成果、综述及快报。主要栏目:机械工程、环境工程·材料工程
作者:LUJian-wei; WANGWan-lu; WUZi-hua; WANGYong-tian 刊期:2004年第02期
The dependences of electrochemical potential at the interface between carbon nanotubes and electrolyte upon temperature and electrolyte concentration are studied. Carbon nanotubes were synthesized by hot filament chemical vapor deposition with Si as the substrate. Four substances were tested: NaCl solution, KCl solut...
作者:AWADSamirHamid; QIANHan-cheng 刊期:2004年第02期
Over the past years, great achievements have been made in the development of coating technologies for surface improvement of aluminum alloys. Despite these achievements, the role in the market strongly depends on the ability of surface coating technology under technical and economic considerations to meet the increas...
作者:ZHANGDing-fei; PENGJian; XUXing-zhi 刊期:2004年第02期
Fe-C-Si-Mn alloy castings used as blades in hydroelectric generators are studied and found to contain network structures after some heat treatments. Castings after annealing and normalizing were analyzed by microscope and transmission electron microscopy (TEM). The network formed during annealing was proved by TEM to...
作者:WANGLi-ao; YUANHui; ZHANGYan-hui; HUGang 刊期:2004年第02期
This paper discribes the definition of ecosystem health for the water-level flutuation zone of the Three Gorges Region and puts forward an evaluation system involving indicators in three groups: 1) structural indicators comprise slope, biodiversity,environmental capacity, stability, restoration ability and damage sit...
作者:LIULi; LIUXi-rong; WANGLi-ao; ZHOUZai-jiang 刊期:2004年第02期
This article describes the investigation of hazardous waste (HW) in the Three Gorges Area of Chongqing region, which indicates that by May 2002, the dumped HW therein amounted to 14 600 t and was mainly distributed in five districts and counties with 11 000 t in Fuling, 1 650 t in Fengdu, 950 t in Wanzhou; 630 t in W...
作者:HUANGTian-yin; XIASi-qing; WUZhi-ping; YINMing; LUFen; ZHAOJian-fu 刊期:2004年第02期
The effects of the coagulation-flocculation process using polyaluminium chloride (PAC) and its aids on the removal of organics and nutrient in the combined sewage from Shanghai Zhuyuan First Municipal Wastewater Treatment Plant are studied,The coagulant aids include cationic polyacrylamide (PAM), polyvinyl alcohol (P...
作者:RENBo-zhi; LONGTeng-rui; SHILian 刊期:2004年第02期
This paper presents a new method to determine parameters in the nonlinear mathematical model of the urban rainfall intensity formula. The method transforms the nonlinear equation into a linear one, and incorperates a damping factor and a step factor to improve the precision of the calculated results. It works out the...
作者:YUBao-chu; ZHANGZhe; TENGQi-jie 刊期:2004年第02期
The Fenghua River Bridge is a major structure on the highway between Hengzhang and Guojiachi, which is to be built with a four-span prestress concrete (PC) box girder and symmetrical cantilever castings. In this paper, a finite element method (FEM) model is set up to study the effects of concrete differential aging t...
作者:ALIAmirIbrahim; QINDa-tong; ATTIANabilAbdulla 刊期:2004年第02期
In recent years, the sustainable development of automatic manual transmissions (AMTs) control in vehicles is conspicuous. The control applications have grown fast and steadily due to the tremendous progress in power electronics components and the control software that enhance the requirements for delivering higher ve...
作者:HUJi-yun; YUCui-ping; YINXue-gang 刊期:2004年第02期
A mathematical model of electromechanical coupling system for a planar inertial vibrating machine is built by setting up dynamical equations of discrete systems with a matrix methodology proposed. The substance of the transient behavior of the machine is unveiled by analyzing the results of the computer simulation to...
作者:HUANGJian-zhong; HANDe-zhi; XIEChang-sheng 刊期:2004年第02期
A multi-user view file system (MUVFS) and a security scheme are developed to improve the security of the united storage network (USN) that integrates a network attached storage (NAS) and a storage area network (SAN). The MUVFS offers a storage volume view for each authorized user who can access only the data in his o...
作者:CHENHai-feng; CHOJoong.Rae; LEEJeong.Tae 刊期:2004年第02期
Genetic algorithms (GAs) employ the evolutionary process of Darwin's nature selection theory to find the solutions of optimization problems. In this paper, an implementation of genetic algorithm is put forward to solve a classical transportation problem, namely the Hitchcock's Transportation Problem (HTP), and the GA...
作者:TANGShan-cheng; HOUYi-bin 刊期:2004年第02期
Reducing cost of service is an important goal for resource discovery and interaction technologies. The shortcomings of transhipment-method and hibernation-method are to increase holistic cost of service and to slower resource discovery respectively. To overcome these shortcomings, a context-aware computing-based meth...
作者:LEIYong; PUYong-jian 刊期:2004年第02期
According to the modern theory of human resource management, the condition of buyout mainly depends on two variables of an employee: his interior value of product and exterior work reward. There exist shortages in evaluating the value of the employees in an enterprise. Consequently, a lot of employees might be laid o...
作者:YUANJian-jun; ZHANGXing-you 刊期:2004年第02期
The asymptotic behaviour of solutions for general partly dissipative reaction-diffusion systems in Rn is studied. The asymptotic compactness of the solutions and then the existence of the global attractor are proved in L2 (Rn) × L2 (Rn).