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1998

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Full-Text Articles in Physical Sciences and Mathematics

40th Rocky Mountain Conference On Analytical Chemistry Jul 1998

40th Rocky Mountain Conference On Analytical Chemistry

Rocky Mountain Conference on Magnetic Resonance

Final program, abstracts, and information about the 40th annual meeting of the Rocky Mountain Conference on Analytical Chemistry, co-sponsored by the Colorado Section of the American Chemical Society and the Rocky Mountain Section of the Society for Applied Spectroscopy. Held in Denver, Colorado, July 25 - August 1, 1998.

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สัมภาษณ์ : ดร. สุรพล สุดารา ผู้เชี่ยวชาญด้านสิ่งแวดล้อม สำนักงานนโยบายและแผนสิ่งแวดล้อม การจัดทำรายงานการวิเคราะห์ผลกระทบสิ่งแวดล้อมกับความถูกต้องในปัจจุบัน, กองบรรณาธิการ Jul 1998

สัมภาษณ์ : ดร. สุรพล สุดารา ผู้เชี่ยวชาญด้านสิ่งแวดล้อม สำนักงานนโยบายและแผนสิ่งแวดล้อม การจัดทำรายงานการวิเคราะห์ผลกระทบสิ่งแวดล้อมกับความถูกต้องในปัจจุบัน, กองบรรณาธิการ

Environmental Journal

No abstract provided.

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มาตรฐานเพื่อการจัดการสิ่งแวดล้อม Iso 1400, พงษ์วิภา Jul 1998

มาตรฐานเพื่อการจัดการสิ่งแวดล้อม Iso 1400, พงษ์วิภา

Environmental Journal

No abstract provided.

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Eia และ Ems กับการจัดการสิ่งแวดล้อม, นันสันต์ Jul 1998

Eia และ Ems กับการจัดการสิ่งแวดล้อม, นันสันต์

Environmental Journal

No abstract provided.

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จุดร่วมของการจัดการความหลากหลายทางชีวภาพ ต้องเริ่มที่การปรับกระบวนทัศน์, บัณฑูร Jul 1998

จุดร่วมของการจัดการความหลากหลายทางชีวภาพ ต้องเริ่มที่การปรับกระบวนทัศน์, บัณฑูร

Environmental Journal

No abstract provided.

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การพัฒนาพื้นที่ชายฝั่งทะเลภาคใต้ กับ แผนการจัดการสิ่งแวดล้อม, พรชัย สุตันไชยนนท์ Jul 1998

การพัฒนาพื้นที่ชายฝั่งทะเลภาคใต้ กับ แผนการจัดการสิ่งแวดล้อม, พรชัย สุตันไชยนนท์

Environmental Journal

No abstract provided.

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กิจกรรมสิ่งแวดล้อม Jul 1998

กิจกรรมสิ่งแวดล้อม

Environmental Journal

No abstract provided.

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สรุปข่าวสิ่งแวดล้อม : เมษายน-มิถุนายน 2541, กองบรรณาธิการ Jul 1998

สรุปข่าวสิ่งแวดล้อม : เมษายน-มิถุนายน 2541, กองบรรณาธิการ

Environmental Journal

No abstract provided.

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การอนุรักษ์ทรัพยากรธรรมชาติและสิ่งแวดล้อมตามรัฐธรรมนูญไทย, อังศุมารินทร์ Jul 1998

การอนุรักษ์ทรัพยากรธรรมชาติและสิ่งแวดล้อมตามรัฐธรรมนูญไทย, อังศุมารินทร์

Environmental Journal

No abstract provided.

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แนะนำกิจกรรมของสถาบันวิจัยสภาวะแวดล้อม : โครงการประชาสัมพันธ์เผยแพร่แนวคิดการพัฒนาพื้นที่ชะลอน้ำเพื่อสนองพระราชดำริ "แก้มลิง" ในส่วนภาคเอกชน, ทวีวงศ์ Jul 1998

แนะนำกิจกรรมของสถาบันวิจัยสภาวะแวดล้อม : โครงการประชาสัมพันธ์เผยแพร่แนวคิดการพัฒนาพื้นที่ชะลอน้ำเพื่อสนองพระราชดำริ "แก้มลิง" ในส่วนภาคเอกชน, ทวีวงศ์

Environmental Journal

No abstract provided.

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Table Of Contents Volume Nine, Number Three, Summer 1998, Risk Editorial Board Jun 1998

Table Of Contents Volume Nine, Number Three, Summer 1998, Risk Editorial Board

RISK: Health, Safety & Environment (1990-2002)

Table of contents for the journal RISK: Health, Safety & Environment (ISSN: 1073-8673)

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Review Of: Allan Mazur, A Hazardous Inquiry: The Rashomon Effect At Love Canal, Thomas G. Field Jr. Jun 1998

Review Of: Allan Mazur, A Hazardous Inquiry: The Rashomon Effect At Love Canal, Thomas G. Field Jr.

RISK: Health, Safety & Environment (1990-2002)

Review of: Allan Mazur, A Hazardous Inquiry: The Rashomon Effect at Love Canal (Harvard University Press 1998). Abbreviations,, appendices: Chron- ology and The Basics of Toxicology, bibliography, chronology, figures, index, photos, references. LC 97-44639; ISBN 0-674-74833-6 [255+xiv pp. $26.00 Cloth, 79 Garden Street; Cambridge MA 02138.]

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Nuclear Waste And Native America: The Mrs Siting Exercise, M. V. Rajeev Gowda, Doug Easterling Jun 1998

Nuclear Waste And Native America: The Mrs Siting Exercise, M. V. Rajeev Gowda, Doug Easterling

RISK: Health, Safety & Environment (1990-2002)

Drs. Gowda & Easterling provide cross-cultural perspectives on issues of risk perception, equity and policy as they affect nuclear waste storage on Native American sites.

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Review Of: Charles R. Bennett, Risks In The Environment: How To Assess Them, Penny Dean Jun 1998

Review Of: Charles R. Bennett, Risks In The Environment: How To Assess Them, Penny Dean

RISK: Health, Safety & Environment (1990-2002)

Review of: Charles R. Bennett, Risks in the Environment: How to Assess Them (Burloak Publications 1996). Appendices, references for the appendices, prologue. ISBN 0-9680438-0-1 [305 pp. Paper $23.95. 277 Belvenia Rd., Burlington, Ontario.]

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Review Of: Leonard W. Doob, Sustainers And Sustainability, Courtney J. Merrill Jun 1998

Review Of: Leonard W. Doob, Sustainers And Sustainability, Courtney J. Merrill

RISK: Health, Safety & Environment (1990-2002)

Review of: Leonard W. Doob, Sustainers and Sustainability (Praeger Publishers 1995). Bibliography, index, notes. LC 95-7982; ISBN 0-275-95314-9 [167 pp. $52.95 Cloth, .88 Post Road West, Westport, CT 06881.]

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Investigation Of Pb/Pb~2+And Polypyrrole Electrodes By Use Of Ac ElectrochemicalThermal Method, Jihua Zhuang, Jie Zhang, Liangjun Dong, Hong Xie, Zhiyu Jiang May 1998

Investigation Of Pb/Pb~2+And Polypyrrole Electrodes By Use Of Ac ElectrochemicalThermal Method, Jihua Zhuang, Jie Zhang, Liangjun Dong, Hong Xie, Zhiyu Jiang

Journal of Electrochemistry

The values of entropy change for Br/Br_2 and Pb/Pb~2+ electrode reactions were measured by use of the ac electrochemicalthermal method. The influence of alkaline pretreatment on the electrochemical behavior for a polypyrrole electrode was also investigated by this method. It was found that after alkaline pretreatment the eletrochemical activity of polypyrrole electrode was decreased obviously, but it kept partly electrochemicalthermal characteristic as same as that before pretreatment.

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Electrochemical Preparation Of Rare Earth Functional Materials And Application Of Rare Earth To Electrochemistry, Qiqin Tong Yexiang Yang May 1998

Electrochemical Preparation Of Rare Earth Functional Materials And Application Of Rare Earth To Electrochemistry, Qiqin Tong Yexiang Yang

Journal of Electrochemistry

The new progress and related mechanism of the electrochemical preparation of rare earth materials(magnets, magnetooptic materials, battery materials, luminescent devices, semiconductors, superconductors) and the application of rare earth to the electrochemical areas(e.g. electroplating,corrosion,electrosynthses) have introduced.

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Studies On Impedance Of Acidcopper Electroplating System, Wen Deng, Zhao Liu, Xiangmin Lin, Hetong Guo May 1998

Studies On Impedance Of Acidcopper Electroplating System, Wen Deng, Zhao Liu, Xiangmin Lin, Hetong Guo

Journal of Electrochemistry

The impedance characteristics of elementary solution (0.3 mol/L CuSO_4+1.94　mol/L　H_2SO_4) and that with the addition of 60 mg/L Cl~-, 300 mg/L OP_21, 30 mg/L PEG, 10 mg/L 2thiazolinyldithiopropane sulfate(self-synthesized additive) are investigated and interpreted in terms of equivalent circuit. The results indicated: (1) Cl~- ion can increase cathodic polarization. (2) A twostep reaction mechanism corresponds to Cu~2+ reduction, that is: Cu~2+→Cu~+, Cu~+→Cu(adsorption)→Cu(lattice), Cu~2+ react in different forms of complex ion in sulfuric acidcupric sulfate solution with or without Cl~- ion. (3) cupric redution impedance shows dispersion effect in the solution that contains Cl~- ion.

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InSitu Raman Spectroscopic Study Of The Oxidation And Reduction Of Ag Electrode In Na_2so_4 Solution, Chen Y X, Huang K Q, Tian Z Q May 1998

InSitu Raman Spectroscopic Study Of The Oxidation And Reduction Of Ag Electrode In Na_2so_4 Solution, Chen Y X, Huang K Q, Tian Z Q

Journal of Electrochemistry

Insitu Raman spectroscopy combined with cyclic voltammogram measurements was used to investigate formation of oxygen species at Ag electrode surfaces during the oxidation and reduction process in 0.1 mol/L Na_2SO_4 solution. The time dependent Raman spectra show that at potentials positive of 0.2 V, adsorption of oxygen atom occurs, while at the potentials positive of 0.4 V, some oxygen atoms migrate into subsurface of the Ag electrode and the other form strongly bound oxygen on the surface through chemical bond. At the same potentials, part of the silver atoms are oxidized and form Ag_2SO_4. During the negative potential ex cursion, …

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Influences Of Ptfe On Electrochemical Properties Of FoamType Ni(Oh)_2 Electrodes, Zhen Zhou, Jie Yan, Xianyou Wang, Jinyuan Huatang Lin, Deying Song, Yunshi Zhang May 1998

Influences Of Ptfe On Electrochemical Properties Of FoamType Ni(Oh)_2 Electrodes, Zhen Zhou, Jie Yan, Xianyou Wang, Jinyuan Huatang Lin, Deying Song, Yunshi Zhang

Journal of Electrochemistry

Research work was performed for the influences of PTFE on the electrochemical properties of foamtype Ni(OH)_2 electrodes by constant current discharge. CV and EIS method. Experimental results exhibit that the existence of PTFE would decrease the reversibility of electrode reaction and increase the reaction resistance of the electrode; thus lower the discharge potential and capacity, so PTFE should be added as little as possible during the preparation of pastetype electrodes.

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Study Of The Mechanisms Of The Electrochemical Reactions Of The Soluble Polyimides, Yin Zhu, Wei Xing, Hui Zhao, Guizheng Shi, Yuesheng Li, Mengxian Ding May 1998

Study Of The Mechanisms Of The Electrochemical Reactions Of The Soluble Polyimides, Yin Zhu, Wei Xing, Hui Zhao, Guizheng Shi, Yuesheng Li, Mengxian Ding

Journal of Electrochemistry

For the first time, the electrochemical behaviors of the three soluble polyimides were studied in the organic and aqueous solutions. It was found that the electrochemical behaviors of PI in the organic solutions are significantly different from that in the aqueous solution. Using the IR spectroscopy and semiempirical molecular orbital calculation and combining the results of the electrochemical measurements, the mechanisms of the electrochemical reactions of polyimides were demonstrated.

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Study Of Charged Property On The Interface Of Porous Membrane Of Anodized Aluminum, Yafei Kuang, Ling Wang, Fei Hu May 1998

Study Of Charged Property On The Interface Of Porous Membrane Of Anodized Aluminum, Yafei Kuang, Ling Wang, Fei Hu

Journal of Electrochemistry

Using electrodialytic method, the relation between the pH value of tested solution and the ζ potential of porous anodized aluminum membrane, which was separated by reverse electrolysis from aluminum substrate, has been investigated. The following results can be obtained in 1.0×10-2 mol/L KCl solution: The pHIEP(isoelectric potential) of the porous membrane is equal to 9.20; In the range of 2.00

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Studies On The Transport Properties Of Zn~2+ In The Zn/V_2o_5 Secondary Battery With Aqueous Medium, Jiahong Zhou, Kuanhong Xue, Guping Pan May 1998

Studies On The Transport Properties Of Zn~2+ In The Zn/V_2o_5 Secondary Battery With Aqueous Medium, Jiahong Zhou, Kuanhong Xue, Guping Pan

Journal of Electrochemistry

The transport properties and the reaction mechanism of Zn~2+ in the cathode material of Zn/V_2O_5 secondary battery with aqueous medium were studied by use of intermittent titration experiments and X-Ray diffraction analysis. The relations of some kinetic parameters to the discharge depth were discussed. The results of the experiments show that the cathodic discharge reaction is an intercalation process.

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An Investigation On Galvanic Corrosion Behavior Of Co-Cr-Mo Alloy And Ti_6al_4v Alloy, Zhijun Bai, Yinshun Wu, Tiancheng Zhang May 1998

An Investigation On Galvanic Corrosion Behavior Of Co-Cr-Mo Alloy And Ti_6al_4v Alloy, Zhijun Bai, Yinshun Wu, Tiancheng Zhang

Journal of Electrochemistry

The combination of Co-Cr-Mo alloy and Ti_6Al_4V alloy is widely used as total hip prostheses. The objective of this work is to quantify the possibility of the acceleration of corrosion due to the galvanic effect. Electrochemical tests based on mixed potential and protection potential theories were used to study the galvanic corrosion behavior of coupling these alloys. The results indicated that the galvanic potential between two alloys always was in the passive potential zone of the isolated alloy respectively, and that the galvanic current of the couple is same as the corrosion current of isolated alloy under passive state. The …

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Electrode Process Of Lithium Ions On Aluminum Electrode In Molten Licl-Kcl, Shuzhen Duan, Congsheng Guan, Qingrong Shi, Xindong Wang May 1998

Electrode Process Of Lithium Ions On Aluminum Electrode In Molten Licl-Kcl, Shuzhen Duan, Congsheng Guan, Qingrong Shi, Xindong Wang

Journal of Electrochemistry

The Deposition mechanism of Lithium on aluminium electrode was studied by using linear sweep voltammetry and potential step method. The formation of α-solid solution was controlled by the diffusion of lithium within the aluminium substance. The formation of β-LiAl alloy was limited by the rate of forming the alloy at the legining, and by diffiusion of lithium through the β- LiAl alloy layer was limited by the rate of forming the alloy at the begining, and by the diffusion of lithium through the β-LiAl alloy later. Neucleation polarization for the formation of β-LiAl alloy was observed. This polarization is an …

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Molecular Inclusion Of Cyclodextrin Polymer And Its Application To Enzyme Electrodes, Huihuang Wu, Baozhang Wu May 1998

Molecular Inclusion Of Cyclodextrin Polymer And Its Application To Enzyme Electrodes, Huihuang Wu, Baozhang Wu

Journal of Electrochemistry

The inclusion complexation of α-cyclodextin prepolymer host with benzoquinone guest was studied by voltametry. The spectroscopic measurements show that the polycondensation of CD with glutaric dialdehyde forms the polymer (PCD) with pending carbonyl, the latter brings about covalent immobilisation of glucose oxidase (GOD) to polymer chains. Owing to the inclusion complexation of CD, the benzoquinone(BQ) as mediator of GOD can be collected in the enzymecontaining PCD membrane, resulting in high concentration of BQ in the membrane while decreasing its amount in solution. TTF was tested to prepare the immobilised enzyme together with mediator in PCD. The enzyme loading in PCD …

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Study On The Substitution Of Chromium Alloy Electroplating From Trivalent Plating Bath For The Hard Chromium Plating, Huidong Li, Min Li, Huiqi Li May 1998

Study On The Substitution Of Chromium Alloy Electroplating From Trivalent Plating Bath For The Hard Chromium Plating, Huidong Li, Min Li, Huiqi Li

Journal of Electrochemistry

Recently, a vast amount of exploring experiments have been made to solve many deadly defect of existing trivalent chromium plating processes and promote to finally substitute the trivalent chromium for the hexvalent chromium plating. Technical scheme which we substitute the amorphous chromium alloy deposition for the pure chromium is determined step by step and process of amorphous CrFeC alloy plating from trivalent chromium plating bath has been developped successfully. The deposition maintains standard of traditional hexvalent chromium deposition in properties of wearresistance and corrosive wear resistance. Moreover, it completely eliminates serious enviromental pollution and has certain advantages of technological property …

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Influence Of Buffers On The Electrodeposition Of Nickel From A Watts Bath, Canzh Gao, Yuli Lu, Rutao Liu, Fang Chen, Shuben Li May 1998

Influence Of Buffers On The Electrodeposition Of Nickel From A Watts Bath, Canzh Gao, Yuli Lu, Rutao Liu, Fang Chen, Shuben Li

Journal of Electrochemistry

The electrochemical reactions occurring during the deposition of nickel from Watts bath have been examined using the voltammetric technique. The important reactions taking place at the anode and cathode have been identified. The influence of buffers HAc,H_3BO_3 and NH_4Cl on the rate of nickel deposition was marked in the lower concentration (0.01-0.05 mol/L) of buffers. The reason why buffers make the rate of nickel deposition increase were discussed.

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Application Of Electrochemical Process To Recycling Waste Water From Flotation Of Phosphate Ores, Shixin Sun Wen Yu May 1998

Application Of Electrochemical Process To Recycling Waste Water From Flotation Of Phosphate Ores, Shixin Sun Wen Yu

Journal of Electrochemistry

The waste water from flotation of phosphate ores can be used to recycling by electrochemical process. The suitable factors of electrochemical process is made by measuring ζ potential and transmittance of the waste water in modified way.

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New Esrelectrochemical Cell Designs For Coaxial Microwave Cavity, Lin Lu Juntao Zhuang May 1998

New Esrelectrochemical Cell Designs For Coaxial Microwave Cavity, Lin Lu Juntao Zhuang

Journal of Electrochemistry

New cell designs for simultaneous electrochemical(EC) and electron spin resonance (ESR) measurements are reported for coaxial microwave cavity. Adjustable shieldings are introduced so that the working electrode can be much shorter than the full height of the cavity. Besides the traditional helical electrode, the working electrode can be cylinders made from metal plates, metallic meshes or even composite materials. The counter electrode can be placed either inside or outside the cavity. These features make the new designs more flexible than that previously reported. With a nonperforated cylindrical electrode, this cell can be used to determine the standard potential and the …

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