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Journal of Natural Gas Chemistry 2011年第6期20卷 629-634页

作者： Danjun Wang Jun Zhao Huanling Song Lingjun chou State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 Gansu China Graduate School of Chinese Academy of Sciences Beijing 100049 China

Methanol synthesis from hydrogenation of CO2 is investigated over Cu/ZnO/Al2O3 catalysts prepared by decomposition of M（Cu,Zn）-ammonia complexes （DMAC） at various *** catalysts were characterized in detail,including X-ray diffraction,N2 adsorption-desorption,N2O chemisorption,temperature-programmed reduction and evolved gas *** influences of DMAC temperature,reaction temperature and specific Cu surface area on catalytic performance are *** is considered that the aurichalcite phase in the precursor plays a key role in improving the physiochemical properties and activities of the final *** catalyst from rich-aurichalcite precursor exhibits large specific Cu surface area and high space time yield of methanol （212 g/（Lcat·h）;T=513 K,p=3MPa,SV=12000 h-1）.

关键词： decomposition of M(Cu,Zn)-ammonia complexes Cu/ZnO/Al2O3 catalyst CO2 hydrogenation methanol synthesis

Kinetic study on the reaction between CO_2-CO and wustite using the isotope exchange method

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International Journal of Minerals,Metallurgy and Materials 2013年第2期20卷 125-130页

作者： Teng Zhang Xiao-jun Hu Kuo-Chih chou State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing School of Metallurgical and Ecological Engineering University of Science and Technology Beijing

To investigate the reaction between CO2-CO and wustite using the isotope exchange method at 1073, 1173, 1273, and 1373 K, the experiment apparatus was designed to simulate the fluidized bed. The chemical rate constant was estimated by considering the effect of gas phase mass transfer on the reaction. It is found that the chemical rate constant is inversely decreased with the increase in the ratio of CO2/CO by volume. The activation energy of reaction is in a linear relationship with the ratio of COs/CO by volume, and the average activation energy is 155.37 kJ/mol.

关键词： kinetics isotope exchange rate constants wustite activation energy

Dynamical analysis on splitting of subtropical high-pressure zone——Geostrophic effect

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Chinese Science Bulletin 1998年第15期43卷 1285-1289页

作者： Jianping Li Jifan chou Lanzhou Univ Dept Atmospher Sci Lanzhou 730000 Peoples R China

Based on two simple dynamical models, the preliminary dynamical analysis of the splitting of subtropical high_pressure zone (SHPZ) without land_sea contrast and orographic effect is investigated. Results show that the... 详细信息

关键词： subtropical high_pressure zone splitting inhomogeneity.

Modeling of turbulent,isothermal and cryogenic cavitation under attached conditions

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Acta Mechanica Sinica 2010年第3期26卷 325-353页

作者： Chien-chou Tseng Yingjie Wei GuoyuWang Wei Shyy Department of Mechanical Engineering University of Michigan2350 Hayward Ann Arbor MI 48109 USA School of Astronautics Harbin Institute of Technology 92 West Da-Zhi Street Harbin 150001 China School of Vehicle and Transportation Engineering Beijing Institute of Technology 5 South Zhongguancun Street Beijing 100081 China Department of Aerospace Engineering University of Michigan 1320 Beal Ann Arbor MI 48109 USA

Cavitation is often triggered when the fluid pres- sure is lower than the vapor pressure at a local thermo- dynamic state. The present article reviews recent progress made toward developing modeling and computational strat- egies for cavitation predictions under both isothermal and cryogenic conditions, with an emphasis on the attached cav- ity. The review considers alternative cavitation models along Reynolds-averaged Navier-Stokes and very lager eddy simu- lation turbulence approaches to ensure that the computational tools can handle flows of engineering interests. Observing the substantial uncertainties associated with both modeling and experimental information, surrogate modeling strategies are reviewed to assess the implications and relative impor- tance of the various modeling and materials parameters. The exchange between static and dynamic pressures under the influence of the viscous effects can have a noticeable impact on the effective shape of a solid object, which can impact the cavitation structure. The thermal effect with respect to evaporation and condensation dynamics is examined to shed light on the fluid physics associated with cryogenic cav- itation. The surrogate modeling techniques are highlighted in the context of modeling sensitivity assessment. Keywords

关键词： Cavitation Cryogenic liquidThermal effects Turbulence model - Surrogate model

Photoassisted Fenton degradation of phthalocyanine dyes from wastewater of printing industry using Fe(Ⅱ)/γ-Al_2O_3 catalyst in up-flow fluidized-bed

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Journal of Environmental Sciences 2014年第6期26卷 1307-1312页

作者： Hsuhui Cheng Shihjie chou Shiaoshing Chen Chiajen Yu Department of Design for Sustainable Environment Mingdao University Institute of Environment Engineering and Management National Taipei University of Technology

Fe（II）/γ-Al2O3 powders synthesized using the dipping method were produced from a mixed aqueous solution containing aluminium oxide （γ-Al2O3） and iron（II）-precursor （FeSO4）, and used for photoFenton degradation of phthalocyanine dyes （PCs） under ultraviolet （UV） irradiation in an up-flow fluidized bed. The catalysts were characterized by XRD, ESCA, BET, EDS and SEM. The results showed that Fe2＋ ion was compounded on the γ-Al2O3 carder. The effects of different reaction parameters such as catalyst activity, dosage and solution pH on the decolorization of PCs were assessed. Results indicated that maximum decolorization （more than 95%） of PCs occurred with 20 wt% Fe（II）/γ-Al2O3 catalyst （dosage of 60 g/L） using a combination of UV irradiation and heterogeneous Fenton system. The degradation efficiency of PCs increases as pH decreases, exhibiting a maximum efficiency at pH 3.5. The recycled catalyst was capable of repeating three runs without a significant decrease in treatment efficiency, and this demonstrated the stability and reusability of catalyst.

关键词： Fe(II)/γ-Al2O3 catalyst phthalocyanine dyes fluidize

Initial alignment for low-cost attitude and heading reference systems

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High Technology Letters 2013年第2期19卷 150-155页

作者：方斌 chou Wusheng Ding Li Robotics Institute of Beihang University

MEMS （micro electro mechanical systems） inertial navigation system ~, Mll＇~3） nas Been WllUly used in robots for its low-cost. The MINS and magnetometers are commonly the component parts of the attitude and heading reference systems （AHRS）, which provide pitch and roll angles relative to the earth gravity vector, and heading angle relative to the north. However, the performance of sen- sors with low cost AHRS is not so good. The gyros are not sensitive enough to observe the earth an- gular velocity, so the traditional technique like alignment algorithm is invalid. The measurements of gyros become useless to determine the initial attitude matrix from navigation frame to body frame. The alignment algorithm is computed by the accelerometers and magnetometers. The process is es- tablished as an optimization problem of finding the maximum eigenvector. Meanwhile the sensitive analysis with respect to the biases of accelerometers is proposed. Then the recursive least squares al- gorithm （RLSA） is introduced. The comparison between the proposed method and RLSA is provid- ed. The results demonstrate its accuracy favorably and verify the feasibility of the proposed algo- rithm.

关键词： attitude and heading reference systems (AHRS) alignment sensitive optimiza-tion eigenvector

Study on the Carbon Nanotube Separative Structure for the Extended Gate H^+-Ion Sensitive Field Effect Transistor

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稀有金属材料与工程 2006年第A03期35卷 225-227页

作者： Yi-Hung Liao Jung-Chuan chou Graduate School of Engineering Science and Technology National Yunlin University of Science and TechnologyDouliouYunlinTaiwan 640China

We use the carbon nanotube (CNT) as the material of the pH sensing layer of the separative structure for the extended gate H^+-ion sensitive field effect transistor (EGFET) *** CNT paste was prepared with CNT powder,Ag powder,silicagel,the di-n-butyl phthalate and the toluene solvents by appropriate ratio,then immobilized on the silicon substrate to form the carbon nanotube sensing *** measured theⅠ_(DS)-Ⅴ_G curves of the carbon nanotube separative structure EGFET device in the different pH buffer solutions by the Keithley 236Ⅰ-Ⅴmeasurement *** to the experimental results,we can obtain the pH sensitivities of the carbon nanotube separative structure EGFET device,which is 62.54mV/pH from pH1 to pH13.

关键词： carbon nanotube extended gate field effect transistor pH sensitivity buffer solution

Deoxidation of Molten Steel by Aluminum

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Journal of Iron and Steel Research International 2015年第10期22卷 905-908页

作者： Guo-hua ZHANG Kuo-chih chou State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing School of Metallurgical and Ecological Engineering University of Science and Technology Beijing

The deoxidation equilibrium of liquid steel was investigated from a new perspective. Dissolved associate MmOn was used to describe the interaction between dissolved M and dissolved oxygen instead of the interaction parameter of Wagner. The concentration of unassociated oxygen could be considered as the activity of oxygen. Or, the percentage of unassociated oxygen in the total dissolved oxygen was the activity coefficient of oxygen. When the content of deoxidizer was low, the dissolved oxygen was mainly composed of the unassociated oxygen, while more and more MxO formed with gradually increasing M content. The present model gave a good description to the aluminum deoxidation equilibrium after considering AlO and Al2O. Furthermore, the higher the con- tent of A1 was, the higher the content of Al2O relative to the content of AlO would be.

关键词： deoxidation equilibrium activity coefficient associated oxygen unassociated oxygen interaction coefficient

The Significant and Profound Impacts of chou’s Distorted Key Theory for Developing Peptide Drugs

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Natural Science 2020年第9期12卷 638-639页

作者： Kuo-Chen chou Gordon Life Science Institute Boston MA USA

In this short review paper, the significant and profound impacts of the distorted key theory for developing peptide drugs have been briefly recalled with crystal clear convincingness.

关键词： AIDS Peptide Drugs Distorted Key Theory Microenvironment

Study the Characteristics of Titanium Oxide Hydrogen Ion Sensor Using XRD and AES

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稀有金属材料与工程 2006年第A03期35卷 250-251页

作者： Jung-Chuan chou Hung-Hsi Yang Graduate School of Electronic Engineering National Yunlin University of Science and TechnologyDouliouTaiwan 640China

We study the extended gate ion sensitive structure,and deposit the titanium oxide (TiO_2) thin film on p-type (100) silicon *** device of the hydrogen ion sensing structure is TiO_2/Si-substrate,and a commercial device of the metal oxide semiconductor field effect transistor (MOSFET) is connected to the separative sensing *** sensitivity and linearity are measured under different work *** the mixed ratio of Ar/O_2 is 80 ml·min^(-1)/20 ml·min^(-1),the work pressure is 4 Pa,the sputtering power is 150 W,and the sputtering time is two hours,the better sensing properties of the sensitivity and linearity are 36.49 mV/pH and 0.99654,***,some instruments are analyzed the surface of TiO_2 membrane,such as X-ray diffraction (XRD) and Auger Electron Spectrometer (AES).The characteristics of TiO_2 thin film can be demonstrated.

关键词： titanium oxide separative sensing device sensitivity linearity X-ray diffraction auger electron spectrometer