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Chemical Research in Chinese Universities 1990年第2期6卷 155-159页

作者： Xiao Heming , Fan Jianfen and Li Yongfu (Department of Chemistry, east China institute of technology, Nanjing)Yu Hengtai (institute of Theoretical Chemistry, Jilin University,Changchun)

Many derivatives of industrially useful cellulose have hydroxyls of the anhydroglucose(AHG) units uncompletely substituted. Since each AHG unit of a cellulose molecule is a trihydric alcohol,consisted of one primary(position 6) and two secondary hydroxyl groups(positions 2 and 3), the distribution of substituents in these trihydric alcohol units could be different for different derivatives. The

关键词： Cellulose Nitrocellulose Nitration Activity Nitration Mechanism.

An Improved Preparation Technique for Pd/Ceramic Composite Membrane by Electroless Plating

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分子催化 1998年第2期 2-3页

作者： GUO Yanglong LU Guanzhong WANG Qin WANG Ren(Research institute of Industrial Catalysis east China University of Science & technology Shanghai 200237)

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关键词： Electroless plating Osmosis Pd/ceramic composite membrane

Manufacture of the Ultrafine Grain WC/Co Cemented Carbides by Combined Sintering Processing

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International Journal of Minerals,Metallurgy and Materials 1999年第3期13卷 208-213页

作者： Binghai Liu Yue Zhang Shixi Ouyang Qikai Li(institute of Technical Physics and Chemistry, east China University of Science and technology , Shanghai 200237, China)(Material Science and Engineering School. University of Science and technology Beijing, Beijing 100083, China)(State Key Laboratory for Synthesis and Processing of Advanced Materials. Wuhan University of Science and technology, Wuhan 430070, China,) institute of Technical Physics and Chemistry East China University of Science and Technology Shanghai 200237 China Material Science and Engineering School University of Science and Technology Beijing Beijing 100083 China State Key Laboratory for Synthesis and Processing of Advanced Materials Wuhan University of Science and Technology Wuhan 430070 China

A new kind of sintering process, combined sintering process. i.e. vacuum sintering plus hot isolate pressure sintering (HIP), was introduced for producing ultrafine WC-10% Co (mass fraction. so as the follows) cemented carbides. The effects of some processing parameters on the microstructure and mechanical properties of the obtained cemented carbides were studied. The results show that the rapid shrinkage and the pronounced densification of tile cemented carbides took place during the vacuum sintering stage, which is intinaately correlated with the local liquid sintering occurred during this earl} sintering stage for the high surface activity of ultrafine WC-Co powder. The way of high pressure imposing. isothermal treatment cycle during *** sintering and HIP sintering stage directly influence the densitication of compacts and the mechanical properties of the produced WC-10%Co cemented carbides.

关键词： ultrafine WC-Co cemented carbides vacuum sintering HIP sintering

θ-PSO: a new strategy of particle swarm optimization

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第6期9卷 786-790页

作者： Wei-min ZHONG1,2, Shao-jun LI1,2, Feng QIAN1,2 (1State Key Laboratory of Chemical Engineering, east China University of Science and technology, Shanghai 200237, China) (2Automation institute, east China University of Science and technology, Shanghai 200237, China) State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China Automation institute East China University of Science and Technology Shanghai China

Particle swarm optimization (PSO) is an efficient, robust and simple optimization algorithm. Most studies are mainly concentrated on better understanding of the standard PSO control parameters, such as acceleration coefficients, etc. In this paper, a more simple strategy of PSO algorithm called θ-PSO is proposed. In θ-PSO, an increment of phase angle vector replaces the increment of velocity vector and the positions are decided by the mapping of phase angles. Benchmark testing of nonlinear func- tions is described and the results show that the performance of θ-PSO is much more effective than that of the standard PSO.

关键词： Particle swarm optimization (PSO) Phase angle Benchmark function

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关于平辊轧制力计算公式

金属学报 1978年第4期14卷 358-372页

作者：陈家民东北工学院

以平面压缩过程代替平辊轧制过程,接触表面按不同摩擦规律分区,同时采用未经简化的变形能不变的塑性条件(即所谓“精确塑性条件”)推导出一个新的平辊轧制力计算公式。该公式适用范围较广,并且附有轧制力计算曲线及轧辊弹性压扁计算图解... 详细信息

以平面压缩过程代替平辊轧制过程,接触表面按不同摩擦规律分区,同时采用未经简化的变形能不变的塑性条件(即所谓“精确塑性条件”)推导出一个新的平辊轧制力计算公式。该公式适用范围较广,并且附有轧制力计算曲线及轧辊弹性压扁计算图解法,使轧制力计算工作大为简化。

关键词：轧制力计算计算曲线计算图解法摩擦系数摩擦应力轧辊弹性压扁平辊轧制计算公式

Preparation of Zeolite X Membranes on Porous Ceramic Substrates with Zeolite Seeds

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Journal of Energy Chemistry 2002年第Z2期 171-179页

作者： Zhongqiang Xu, Qingling Chen, Guanzhong LuShanghai Research institute of Petrochemical technology, Shanghai 201208, Chinainstitute of Industrial Catalysis, east China University of Science and technology, Shanghai 200237, China

Zeolite X membranes were investigated by in-situ hydrothermal synthesis on porous ceramic tubes precoated with zeolite X seeds or precursor amorphous aluminosilicate, and porous α-Al2O3 ceramic tubes with a pore size of 50-200 nm were employed as supports. Zeolite X crystals were synthesized by the classic method and mixed into deionized water as a slurry with a concentration of 0.2-0.5wt%, having a range of crystal sizes from 0.2 to 2μm. Crystal seeds were pressed into the pores near the inner surface of the ceramic tubes, and crystallization took place at 95℃ for 24-96 h. It was also investigated that Boehmite sol added with zeolite X seeds was precoated on ceramic supports to form a layer of r-Al2O3 by heating, and hydrothermal crystallization could then take place to prepare the zeolite membranes on the composite ceramic tubes. The crystal species were characterized by XRD, and the morphology of the supports subjected to crystallization was characterized by SEM. The composite zeolite membranes hav

关键词： 

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一类流域点污染源识别的稳定性与数值模拟

水动力学研究与进展（A辑） 2008年第4期23卷 364-371页

作者：王泽文邱淑芳核资源与环境教育部重点实验室(东华理工大学) 江西南昌330013 东华理工大学数学与信息科学学院

本文考虑了流域中单个点污染源识别问题的唯一性、稳定性和反演算法。该问题的数学模型为一维线性对流反应扩散方程,方程的源项F(x,t)表示了污染源是一个随时间变化的点污染源。在对污染源及测量点的先验假设下,获得了点源识别的唯一性... 详细信息

本文考虑了流域中单个点污染源识别问题的唯一性、稳定性和反演算法。该问题的数学模型为一维线性对流反应扩散方程,方程的源项F(x,t)表示了污染源是一个随时间变化的点污染源。在对污染源及测量点的先验假设下,获得了点源识别的唯一性和局部稳定性,给出了识别污染源位置s和污染强度λ(t)的计算方法。数值例子表明源项反演的算法是有效的。

关键词：源项识别对流反应扩散方程局部稳定性反问题水污染

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光束大气传输源象抖动双频相关函数的研究

红外研究(A辑) 1988年第2期7 A卷 131-137页

作者：张逸新华东工学院光电技术系

本文讨论了通过湍流大气传输的光束在接收望远镜象面上成象位置起伏的频率相关问题;推导出束状波源象抖动双频相关函数,准球面、平面光波源象抖动相关函数的解析式(弱湍流起伏区)和最大源象抖动对应的光源工作波长。

关键词：相关函数束状关联函数接收望远镜湍流大气双频光束传输相位起伏弱湍流

A Theoretical Study on the Spectral Response Characteristics of S-20 Photocathodes

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真空科学与技术学报 1992年第Z1期23卷 235-238页

作者： Benkang Chang, Yuanzhen Liu east China institute of technology, Nanjing, China

A formula of spectral response S(λ) is derived from the quantum yield of multialkali photocathodes in this paper. The S(λ) of S-20 photocathodes is calculated by choosing suitable parameters. The results are in good agreement with the experimental data of S-20 photocathodes. The influence of photocathode thickness D, photocathode structure parameter P, spectral response cut-off wavelength λ_j and photoelectron escape depth L on S(λ) is discussed. It is considered that D, P and λ_j are decisive factors featuring S-20 photocathodes.

关键词：上寺口试加杨二心石门

Energy Confinement of both Ohmic and LHW Plasma on east

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Plasma Science and technology 2011年第3期13卷 312-315页

作者：杨曜高翔 east team institute of Plasma Physics Chinese Academy of Sciences Hefei 230031 China

Study on the characters of energy confinement in both Ohmic and lower hybrid wave （LHW） discharges on east is conducted and the linear Ohmic confinement （LOC）, saturated ohmic confinement （SOC） and improved Ohmic confinement （IOC） regimes are investigated in this paper. It is observed that an improved confinement mode characterized by both a drop of IDa line intensity and an increase in line average density can be triggered by a gas puffing pulse.

关键词： energy confinement LHW plasma Ohmic heating east