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MACRO-KINETICS BEHAVIOR OF GOLD RECOVERY BY ACTIVATED CARBON FIBERS (ACFs) IN A FLUIDIZED BED

Chinese Journal of Reactive Polymers 2002年第2期11卷 143-146页

作者： ZHANG Xiaoping CHEN Shuixia ZENG Hanmin Department of Environmental Science and Engineering South China University of TechnologyGuangzhou 510641P.R.China Key Laboratory of Polymeric Composite&Functional Materials The Ministry of Education of ChinaMaterials Science InstituteZhongshan University

The recovery of Au by activated carbon fibers (ACFs) was carried out in a 40mm diameter, 1200mm height fluidized bed. The rates of reaction of the functional fibers with Au3+ in the pure aurum solution and in the aurum-containing wastewater were measured respectively at the different solution flow rates, and compared with the results under the static solution conditions. Experimental results indicated that the reaction rates in fluidization are notably higher than those in the static state and increase with the increase of solution flow rate. It demonstrates that the thickness of the concentration boundary layer is decreased and a uniform temperature field is established in the bed due to increasing of the turbulent extent with the relative fiber/solution velocity.

关键词： Fluidization functional fiber Aurum Reaction rate

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Interfacial interaction of carbon fiber/PEEK and its effect on the mechanical performance

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Progress in Natural science:Materials International 2001年第4期11卷 3-11页

作者：李铁骑章明秋曾汉民 China China Department of Materials Science and Engineering China Materials Science Institute Guangdong University of Technology Guangzhou 510090 Guangzhou 510275 Key Laboratory of Polymeric Composite and Functional Materials The Ministry of Education of China Zhongshan University

An in-depth survey of the researches is presented on the anisotropic structure and properties of inter-phase in carbon fiber reinforced polyetheretherketone composites. The formation and structural nature of interfacial short-range and long-range effects, micromechanical and macromechariical roles of interphase are discussed. Besides, prospects of further studies and a novel methodology for revealing interfacial properties of thermoplastic composites are demonstrated.

关键词： polyetheretherketone (PEEK) composites interface interfacial interaction shear and fracture properties.

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Chlamydomonas reinhardtii Dangeard (Chlamydomonadales, Chlorophyceae) mutant with multiple eyespots

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Phycological Research 2001年第2期49卷 115-121页

作者： Nakamura, Shogo Ogihara, Haruo Jinbo, Kinue Tateishi, Midori Takahashi, Tetsuo Yoshimura, Kenjiro Kubota, Mamoru Watanabe, Masakatsu Nakamura, Soichi Department of Environmental Biology and Chemistry Faculty of Science Toyama University Toyama 930-8555 Japan Department of Biology Faculty of Science Toyama University Toyama 930-8555 Japan School of Materials Science Japan Advanced Institute of Science and Technology Nomi-gun Ishikawa 923-1292 Japan Department of Biological Science Graduate School of Science University of Tokyo Tokyo 113-8654 Japan National Institute for Basic Biology Okazaki National Research Institute Okazaki Aichi 444-8585 Japan Laboratory of Cell and Functional Biology Faculty of Science University of the Ryukyus Nishihara Okinawa 903-0213 Japan

We have isolated a new Chlamydomonas reinhardtii Dangeard (Chlamydomonadales, Chlorophyceae) mutant with from one up to more than four eyespots cell-1. It was designated mes (multiple eyespots)-10. A wild-type cell ha... 详细信息

We have isolated a new Chlamydomonas reinhardtii Dangeard (Chlamydomonadales, Chlorophyceae) mutant with from one up to more than four eyespots cell^-1. It was designated mes (multiple eyespots)-10. A wild-type cell has a single eyespot, located under the chloroplast envelope, at a certain position near the cell's equator where the chloroplast envelope is in contact with the cell membrane. The eyespot(s) in mes-10, however, are located at various positions on its chloroplast. The mes-10 cells displayed negative phototaxis to 480-500 nm light. This behavior differed from that of a similar mutant, ptx4, which has been shown to have multiple eyespots and display no phototaxis (Pazour et al., J. Cell Biol. 1995;131: 427-40). Mes-10 may retain a functional photoreceptor and a photosignal transduction system independently of its multiple eyespots. This mutant should be useful for studying how C. reinhardtii responds to light signals, as well as how eyespots are formed in the cell.

关键词： Chlamydomonas Eyespot Mutant Photophobic response Phototaxis

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Balance-equation approach to terahertz-field-driven magnetotransport in semiconductors

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The European Physical Journal B - Condensed Matter and Complex Systems 2000年第2期13卷 271-277页

作者： Lei, X.L. Liu, S.Y. China Center of Advanced Science and Technology (World Laboratory) P.O. Box 8730 Beijing 100080 PR China CN State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Metallurgy Chinese Academy of Sciences 865 Changning Road Shanghai 200050 PR China CN

We investigate the magnetotransport in semiconductors under the influence of a dc or slowly-varying electric field, an intense polarized radiation field of terahertz frequency, and a uniform magnetic field, being in arbitrary directions and having arbitrary strengths. Effective force- and energy-balance equations are derived by using a gauge that the magnetic field and the high-frequency radiation field are described by a vector potential and the dc or slowly-varying field by a scalar potential, and by distinguishing the slowly-varying velocity from the rapidly-oscillating velocity related to the high-frequency field. These equations, which include the elastic photon process and all orders of multiphoton absorption and emission processes, are applied to the examination of the effect of a terahertz radiation on the magnetophonon resonance of the longitudinal resistivity in the transverse configuration in nonpolar and polar semiconductors. We find that the previous zero-photon resonance peaks are suppressed by the irradiation of the terahertz field, while many new peaks, which may be related to multiphoton absorption and emission processes, emerge and can become quite distinct, at moderately strong radiation field.

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Skin wrinkling of impact damaged sandwich composite

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Journal of Sandwich Structures and Materials 1999年第4期1卷 299-322页

作者： Thomson, R.S. Mouritz, A.P. Cooperative Research Centre for Advanced Composite Structures Ltd 506 Lorimer Street Fishermens Bend VIC Australia Defence Science and Technology Organisation Aeronautical and Maritime Research Laboratory Melbourne VIC Australia

The effect of impact damage on the edgewise compressive properties and failure mechanism of a sandwich polymer composite is investigated. The composite was made from a thick core of polyvinyl chloride foam sandwiched between thin face skins of glass fibre reinforced polymer laminate. This material was impacted at a low energy that caused damage to the skin and at a high energy that severely damaged the skin and core. The unimpacted sandwich composite failed in edgewise compression by crimping of the foam core. When damage created by the low and high energy impacts exceeded a critical size the failure mechanism changed suddenly to wrinkling of the impacted skin. Failure by skin wrinkling resulted in large reductions to the edgewise compressive stiffness and strength of the sandwich composite. A model is proposed to determine the edgewise compressive stress required to induce skin wrinkling in impact damaged sandwich composites. Good agreement was found between the theoretical and measured skin wrinkling stresses in some cases. © 1999 Technomic Publishing Co., Inc.

关键词： Failure (mechanical)

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Nonparabolic multivalley balance-equation approach to impact ionization: Application to wurtzite GaN

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The European Physical Journal B - Condensed Matter and Complex Systems 1999年第1期7卷 79-83页

作者： J.C. Cao X.L. Lei China Center of Advanced Science and Technology (World Laboratory) P.O. Box 8730 Beijing 100080 P.R. China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Metallurgy Chinese Academy of Sciences 865 Changning Road Shanghai 200050 P.R. China CN

Extended nonparabolic multivalley balance equations including impact ionization (II) process are presented and are applied to study electron transport and impact ionization in wurtzite-phase GaN with a , L-M, and conduction band structure at high electric field up to 1000kV/cm. Hot-electron transport properties and impact ionization coefficient are calculated taking account of the scatterings from ionized impurity, polar optical, deformation potential, and intervalley interactions. It is shown that, for wurtzite GaN when the electric field approximately equals 530kV/cm, the II process begins to contribute to electron transport and results in an increase of the electron velocity and a decrease of the electron temperature, in comparison with the case without the II process. Similar calculations for GaAs are also carried out and quantitative agreement is obtained between the calculated II coefficients by this present approach and the experimental data. Relative to GaAs, GaN has a higher threshold electric field for II and a smaller II coefficient.

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Contributory presentations/posters

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Journal of Biosciences 1999年第1期24卷 33-198页

作者： N. Manoj V. R. Srinivas A. Surolia M. Vijayan K. Suguna R. Ravishankar R. Schwarzenbacher K. Zeth Diederichs G. M. Kostner A. Gries P. Laggner R. Prassl Madhusudan Pearl Akamine Nguyen-huu Xuong Susan S. Taylor M. Bidva Sagar K. Saikrishnan S. Roy K. Purnapatre P. Handa U. Varshney B. K. Biswal N. Sukumar J. K. Mohana Rao A. Johnson Vasantha Pattabhi S. Sri Krishna Mira Sastri H. S. Savithri M. R. N. Murthy Bindu Pillai Kannan M. V. Hosur Mukesh Kumar Swati Patwardhan K. K. Kannan B. Padmanabhaa S. Sasaki-Sugio M. Nukaga T. Matsuzaki S. Karthikevan S. Sharma A. K. Sharma M. Paramasivam P. Kumar J. A. Khan S. Yadav A. Srinivasan T. P. Singh S. Gourinath Neelima Alam A. Srintvasan Vikas Chandra Punit Kaur Ch. Betzel S. Ghosh A. K. Bera S. Bhattacharya S. Chakraborty A. K. Pal B. P. Mukhopadhyay I. Dey U. Haldar Asok Baneriee Jozef Sevcik Adriana Solovicova K. Sekar M. Sundaralingam N. Genov Dong-cai Liang Tao Jiang Ji-ping Zhang Wen-rui Chang Wolfgang Jahnke Marcel Blommers S. C. Panchal R. V. Hosur Bindu Pillay Puniti Mathur S. Srivatsun Ratan Mani Joshi N. R. Jaganathan V. S. Chauhan H. S. Atreya S. C. Sahu K. V. R. Chary Girjesh Govil Elisabeth Adjadj Éric Quinjou Nadia Izadi-Pruneyre Yves Blouquit Joël Mispelter Bernadette Heyd Guilhem Lerat Philippe Milnard Michel Desmadreil Y. Lin B. D. Nageswara Rao Vidva Raghunathan Mei H. Chau Prashant Pesais Sudha Srivastava Evans Coutinho Anil Saran Leizl F. Sapico Jayson Gesme Herbert Lijima Raymond Paxton Thamarapu Srikrishnan C. R. Grace G. Nagenagowda A. M. Lynn Sudha M. Cowsik Sarata C. Sahu S. Chauhan A. Bhattacharya G. Govil Anil Kumar Maurizio Pellecchia Erik R. P. Zuiderweg Keiichi Kawano Tomoyasu Aizawa Naoki Fujitani Yoichi Hayakawa Atsushi Ohnishi Tadayasu Ohkubo Yasuhiro Kumaki Kunio Hikichi Katsutoshi Nitta V. Rani Parvathy R. M. Kini Takumi Koshiba Yoshihiro Kobashigawa Min Yao Makoto Demura Astushi Nakagawa Isao Tanaka Kunihiro Kuwajima Jens Linge Seán O. Donoghue Michael Nilges G. Chakshusmathi Girish S. Ratnaparkhi P. K. Madhu R. Varadarajan C. Tetreau Molecular Biophysics Unit Indian Institute of Science Bangalore India Austrian Academy of Sciences Institute of Biophysics and X-ray Structure Research Graz Austria Faculty of Biology University of Konstanz Germany Institute of Medical Biochemistry University of Graz Austria Howard Huges Medical Institute Department of Chemistry & Biochemistry University of California La Jolla USA Department of Chemistry & Biochemistry University of California San Diego La Jolla USA Molecular Biophysics Unit India Department of Microbiology &Cell Biology Indian Institute of Science Bangalore India Macromolecular Structure Laboratory NCI - Frederick Cancer Research and Development Center ABL - Basic Research Program Frederick USA Department of Crystallography and Biophysics University of Madras Chennai Biochemistry Department Indian Institute of Science Bangalore India Condensed Matter Physics Division B.A.R.C. Trombay Mumbai Condensed Matter Physics Division Bhabha Atomic Research Centre Trombay Mumbai IMCB The University of Tokyo Tokyo Japan Mitsubishi Chemical Corporation Yokohama Research Center Yokohama Japan Faculty of Pharmaceutical Sciences Chiba University Chiba Japan Department of Biophysics All India Institute of Medical Sciences New Delhi India Department of Biophysics All India Institute of Medical sciences New Delhi India Institüt Physiologische Chemie Hamburg Germany Biophysics Department Bose Institute Calcutta India Slovak Academy of Sciences Institute of Molecular Biology Bratislava Slovakia Indian Institute of Science Bioinformatics Centre Bangalore Departments of Chemistry and Biochemistry Biological Macromolecular Structure Center USA Bulgarian Academy of Sciences Institute of Organic Chemistry Sofia Bulgaria Chinese Academy of Sciences Institute of Biophysics Beijing China Novartis Pharma AG Preclinical Research Basel Switzerland Department of Chemical Sciences Tata Institute of Fundamental Research Mumbai India Solid State Physics Div

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Erratum: ‘‘Optical investigation of quaternary GalnAsSb/AlGaAsSb strained multiple quantum wells’’ [Appl. Phys. Lett. 67, 3432 (1995)]

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Applied Physics Letters 1996年第18期68卷 2591-2591页

作者： W. Z. Shen S. C. Shen W. G. Tang Y. Zhao A. Z. Li CCAST (World Laboratory) P.O. Box 8730 Beijing 100080 National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Shanghai 200083 Center of Advanced Science and Technology of Microstructures Nanjing 210008 People's Republic of China Department of Functional Materials for Informatics Shanghai Institute of Metallurgy Shanghai 200050 People's Republic of China

W. Z. Shen, S. C. Shen, W. G. Tang, Y. Zhao, A. Z. Li, W. Z. Shen, S. C. Shen, W. G. Tang, Y. Zhao, A. Z. Li; Erratum: ‘‘Optical investigation of quaternary Gal

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TORQUE TRANSMISSION CAPABILITIES OF ADHESIVELY BONDED TUBULAR LAP JOINTS FOR composite DRIVE SHAFTS

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composite STRUCTURES 1995年第2期30卷 229-240页

作者： KIM, WT LEE, DG Laboratory for Advanced Composite Materials Department of Precision Engineering and Mechatronics Korea Advanced Institute of Science and Technology Kusong-dong Yusong-ku Taejon-shi 305- 701 Korea

The stresses and torque transmission capabilities of adhesively bonded circular, hexagonal and elliptical lap joints were analyzed by the three-dimensional finite element method and compared with the experimental results. The adherends of the joints were composed of carbon fiber epoxy composite shafts and steel shafts. In calculating the torque transmission capabilities, the linear laminate properties of the composite material and the nonlinear shear properties of the adhesive were used. Using this method, the torque transmission capabilities of the adhesively bonded lap joints could be calculated accurately, except the circular and the hexagonal single lap joints whose adherends were failed by bulging when the composite adherends had small stacking angles from the shaft axis. The experiments revealed that the hexagonal joint had the best torque transmission capability among the single lap joints, and the double lap joint had better torque transmission capability than the single lap joint. The torque transmission capability of the hexagonal single lap joint was found to be comparable to that of the circular double lap joint.

关键词： Adhesive joints

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DEVELOPMENT OF A STRENGTH MODEL FOR THE COCURED STEPPED LAP JOINTS UNDER TENSILE LOADING

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composite STRUCTURES 1995年第1-4期32卷 593-600页

作者： KIM, HS LEE, SJ LEE, DG Mechanical Design Laboratory with Advanced Composite Materials Department of Mechanical Engineering Korea Advanced Institute of Science and Technology Kusong-dong Yusong-gu Taejon-shi Korea 305-701

The cocured stepped lap joints for composite structures were manufactured and tested under static and fatigue tensile loads. From the tests, it was found that the joints were shear-failed at the joining interfaces. As the length of the stepped lap of the joint increased, the average static tensile strength of the joint increased, while the average static shear strength decreased in proportion to the length of the stepped lap of the joint. The fatigue endurance limit was found to be 30-40% of the static strength. Also, the cocured stepped lap joints were manufactured by curing plies laid-up on the composite plates which had machined stepped laps. The static strength of the joints manufactured by the latter method was found to be 70-80% of the static strength of the joints manufactured without machining and the fatigue endurance limit was found to be about 25% of the static strength.

关键词： Joints (structural components)

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