Abstract:The copper-doped titanium dioxide or pure nanometer titanium dioxide was prepared with sol-gel and calcination methods. Aluminum was gradated on TiO_2/glass and nanometer TiO_2 by photocatalysis, and the intermediates were determined with the UV absorptio

Abstract:利用Devanathan Stachurski电化学法和失重法,在不同浓度的硫化氢溶液中研究16MnR钢的腐蚀速率和稳态氢渗透电流密度随硫化氢质量分数变化的规律.实验结果表明,其变化规律可用3个不同的线性方程拟合,通过数学处理,求得16MnR钢的腐蚀速率和渗氢电流密度之间的定量方程.H2S的质量分数超过160×10-6以后,腐蚀产物Fe2+与H2S反应形成FeS(1-x)沉积物附着在钢的表面上,使腐蚀速率减小.H2S腐蚀的渗氢效率约在10-4的数量级范围.

Abstract:阐明了采用粉末微电极循环伏安法估测锂离子电池(LIB)炭负极材料的循环性能的原理．采用该法研究了经高温热处理后具有良好贮锂结构的石油焦试样在1mol／L LiClO4／EC DEC(1：1)电解液中的循环性能．实验结果表明，该试样是一种循环性能优越的LIB负极材料：充、放电到第500循环时，放电容量仍保持了最大放电容量的85．02％，充、放电效率为94．96％；同时也证明了粉末微电极循环伏安法用于估测LIB炭负极材料的循环性能的可行性．

Abstract:Combining the theory of continuous medium mechanics with the theory of rheological measure, this paper studied the dynamic extrusion process of polymer melt under superimposed vibration and established the mathematical formula of primary normal stress d

Abstract:利用盾叶薯蓣的茎段为外植体诱导愈伤组织，转移到分化培养基培养获得了试管苗和微块茎．取带绿色芽点的微块茎或愈伤组织置于0．05％或0．02％的秋水仙碱诱变处理24～72h，经过培养筛选获得了大量的变异试管苗，诱变率达57．4％．细胞学鉴定后获得了染色体数目为2n=4z=48(z=12)的同源四倍体盾叶薯蓣新材料．该材料的生长势强，块茎粗大，在相同生长条件下其幼嫩块茎的皂素含量比对照提高了20％，是高皂素药用薯蓣新种质，将在医药种质资源生产上具有重要的推广价值．四倍体盾叶薯蓣无菌短枝生根困难，采用微块茎为繁殖体，其生根率达100％，并有较高的移栽成活率，所以，诱导微块茎是四倍体盾叶薯蓣快速繁殖的理想途径．

Abstract:This paper introduced Logistic equation in the field of ecology to the study of the kinetics of microbial batch culture. Three models of biomass concentration (x) in the culture medium as functions of substrate concentration(s)based respectively on Monod

Abstract:This paper used an improved Genetic Algorithm method for the multi-objective programming of water pollution control systems. The algorithm adopted the decimal system coding theory, variable weight comprehensive distance evaluation model and multiple-chrom

Abstract:采用内燃机噪声声功率级测定的工程法和简易法对湖南动力机厂的6105Q-C型车用柴油机进行了噪声声功率级的测试．测试发现，该柴油机在标定工况下的噪声声功率级为113dB(A)，已满足国际规定要求，并且低于我国中小型功率柴油机噪声限值及国内同类机型产品的噪声值．但从试验数据看，喷油泵、进气管所在端面及项面噪声辐射较显著，声压级略高；从频谱看，1000～2000Hz范围内噪声最大．本文对上述问题提出了分析与改进意见．

Abstract:Based on AC flow tracing, this paper presents a method for transmission congestion cost allocation with hybrid transaction models. Based on the contribution portions of individual generators to line congestions and loads, the line congestion costs were fi

Abstract:The implementation of power bidding is an important measure and an inevitable trend in the commercialization of power. This paper introduced the function of the system and systematically discussed the work principle of the Client, Supervision and Server.

Abstract:This paper presents a new approach for on-line measurement of viscosity of rubber mixture. In the approach, fuzzy modeling was adopted to construct the viscosity measurement model. During the fuzzy modeling, T-S model was employed to approximate the non-l

Abstract:Instantaneous companding synthesis of wavelet functions and wavelet transformation is a new theory and method of circuitry theory. A CWT was realized by using log-domain circuits. An analogue CMOS high-frequency continuous wavelet transformation circuit h

Abstract:With the example of taped pile, the buckling problem of variable section piles was analyzed with the energy method. Firstly, the mechanical model of the taped pile was established, proper pile deflection function satisfying the boundary condition was chos

Abstract:The utilization level and bearing capacity of externally bonded steel plates in axially loaded reinforced concrete columns depend on the first loaded value, type of externally bonded steel plate and strength of concrete. Based on the stress-strain relatio

Abstract:In order to analyze the fluid flow interaction or confrontation in ventilation and air-conditioning and the mechanism of complex fluid convection, we applied computational fluid dynamics (CFD) to simulate and analyze the following three typical fluid-flow

Abstract:A vibration analysis method was applied to obtain the structural response of a system with soil-structural interaction. Based on the assumption that the superstructure possesses classical normal modes, the coupled equations were decoupled to form a set of

Abstract:This paper studied the computing method for the stability analysis of layered strata slopes and developed the horizontal slice method (HSM) for such slopes. With the selection mode, crossover operation and mutating operation during the evolutionary proces

Abstract:With the rapid development of short message business, the performance problem of short message service center (SMSC) has emerged. How to maintain the sound operation of the message center and achieve satisfactory performance under heavy load or overload h

Abstract:在Hierons提出的一种基于Z语言软件自动测试方法的基础上进行了拓展．该方法基于软件的Z语言规约；以HierOns提出的推理规则为基础，提出了分裂树的算法，将操作模式的约束条件转换为形如ViPi∧Qi的析取范式；然后根据析取范式将Z语言描述的操作模式划分为子操作模式；依据子操作模式的前置条件和后置条件，将子操作模式作为状态转换图的转换关系，构建了被测试软件的状态转换图；依据状态转换图，提出了相应的状态覆盖准则、转换关系覆盖准则和转换关系谓词覆盖准则等测试数据选择准则．

Abstract:The key to some conjectural rules for fuzzy control system stability,such as state space approach, input-output stability, the circle criterion and the conicity criterion, is how to deal with the characteristics of fuzzy controller in the mathematical way

Abstract:A multisplitting additive Schwarz algorithm and a two-level multisplitting additive Schwarz algorithm were presented to solve a system of nonlinear equation sets. The convergence and the convergent rate were analyzed and some convergent theories were esta

Abstract:Unlike other meshless methods, the point interpolation method (PIM) adopts the polynomial approximation to construct the shape functions. The created shape functions possess the properties of the Kronecker delta function, which allows easy imposition of

Abstract:The thermoelastic problem was investigated for a point heat source in the matrix outside an elliptical inclusion. By combining the complex variable theories of sectional holomorphic function, conformal transformation, the analysis of the singularity, anal

Abstract:对于非约束体系，量子力学动能表达式为T=∑pi^2／(2μ)，其中Pi为笛卡儿动量算符．这一结论与坐标的选取无关．但对约束体系，这一结论不再成立，正确的动能表达式为T=1／(2μ)∑[1／fi(x，Y，z)]Pifi(x，Y，z)Pi，其中fi(x，y，z)(i=x，y，z)为坐标x，y，z的平凡函数．

Abstract:用WKB方法计算在极高温度(非共振情况)下19F(p,α)16O与19F(p,γ)20Ne两反应道分支比.在CNO循环中,这两个核反应反应速度的快慢直接影响着16O和20Ne的含量,进而影响着17F和18F中微子的流量.计算表明,在(2～3)×107 K温度范围内其分支比值R约为1.189×103.这表明在CNO循环中,核反应19F(p,γ)20Ne可以忽略.

Abstract:在风险投资运作过程中，风险投资机构如何正确地选择有信用的风险企业合作，关系到整个风险投资的成败．本文将就风险企业信用等级指标体系的构建及其评价模型进行研究．由于风险企业的信用等级评估是一个信息不完全的复杂多因素综合决策问题，适合于运用灰色系统理论进行信息处理．为此本文从风险投资机构的角度，构建了风险企业的信用评价指标体系及评价因素集，并建立灰色关联信用评估模型，较好地解决了对风险企业的信用进行综合评估的问题．