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Articles 31 - 60 of 456
Full-Text Articles in Physical Sciences and Mathematics
Adsorption And Oxidation Of Methanol On Pt And Sb, S Modified Pt Electrodes Using Cyclic Voltammetry And Eqcm, Guo-Liang Chen, Sheng-Pei Chen, Heng Lin, Xing-Hong Zheng, Shi-Gang Sun
Adsorption And Oxidation Of Methanol On Pt And Sb, S Modified Pt Electrodes Using Cyclic Voltammetry And Eqcm, Guo-Liang Chen, Sheng-Pei Chen, Heng Lin, Xing-Hong Zheng, Shi-Gang Sun
Journal of Electrochemistry
The processes of adsorption and oxidation of methanol on Pt, Pt/Sb ad and Pt/S ad electrodes were studied by using cyclic voltammetry and electrochemical quartz crystal microba_lance (EQCM). The results demonstrated that the oxidation of methanol depends strongly on oxidation states of electrode surface. Sb adatoms on Pt surface can adsorb oxygen at relatively low potentials, and exhibit catalytic effects for methanol oxidation. In contrast to Pt electrodes, the oxidation peak potential of methanol in this case negatively shifted to about 130 mV. In a contrary, the oxidation of S adatoms consumes oxygen species of Pt electrode surface. As a …
Study Of Electrochemistry Of Aloe-Emodin And Determination Of It With 1.5th Order Derivative Anodic Stripping Voltammetry, Xin Hua Lin, Li Ying Huang, Wei Chen, Hong-Bin Luo, Bin Qiu, Chun-Yan Li
Study Of Electrochemistry Of Aloe-Emodin And Determination Of It With 1.5th Order Derivative Anodic Stripping Voltammetry, Xin Hua Lin, Li Ying Huang, Wei Chen, Hong-Bin Luo, Bin Qiu, Chun-Yan Li
Journal of Electrochemistry
In 0.1 mol/L HAc solution(pH=2.89),the voltammetric behaviours of aloe emodin at a glassy carbon electode has been studied. One pair of current peak of the voltammogram may be attributed to a quasireversible two electron transfer of aloe emodin molecules at the glassy carbon electrode. A new method, the derivative anodic stripping voltammetry, for aloe emodin determination is described. The adsorptive potential of aloe emodin is -0.80V(vs. SCE),while its stripping potential is -0.38V(vs.SCE). The peak current is propotional to the concentration of aloe emodin over the range of 2.0×10 -7 ～8.0×10 -6 mol/L. The method is simple, rapid and reliable for …
Electrosynthesis Of A New Electroactive Poly(2,2'-Diaminophenyloxydisulfide), Yu Zhi Su, Yan Wen Rao, Ye Yang, Mei-Bing Chen, Yin Ling Qiu, Yong-Hua Zhang, Ke Cheng Gong
Electrosynthesis Of A New Electroactive Poly(2,2'-Diaminophenyloxydisulfide), Yu Zhi Su, Yan Wen Rao, Ye Yang, Mei-Bing Chen, Yin Ling Qiu, Yong-Hua Zhang, Ke Cheng Gong
Journal of Electrochemistry
A new electroactive poly(2,2' diaminophenyloxydisulfide) (PDAPD) was successfully synthesized from acetonitrile(AN)/tetrahydrofuran(THF)solutions containing the supporting electrolyte(LiClO 4)and the various kinds of acids(HCl,CF 3COOH,CCl 3COOH) on Pt electrode by consecutive cyclic voltammiry. The effects of the concentrations of supporting electrolyte(LiClO 4) and acid(HCl,CF 3COOH,CCl 3COOH) on electrodepositon of PDAPD film were investigated. The best experimental conditions for electrosynthesis of a highly electroactive conducting polymer film are that the concentrations are 0.1 mol/L and between 0.05 mol/L～0.5 mol/L,respectively for LiClO 4 and HCl.
Analyses On Spm Images And Theoretical Investigations On Oxygen Vacancy Concentration Of Light-Induced Nanostructured Titania Super Hydrophilic Films, Ren-Jie Zeng, Zhong-Hua Lin, Zhi-Min Fang
Analyses On Spm Images And Theoretical Investigations On Oxygen Vacancy Concentration Of Light-Induced Nanostructured Titania Super Hydrophilic Films, Ren-Jie Zeng, Zhong-Hua Lin, Zhi-Min Fang
Journal of Electrochemistry
A typical nanostructured titania super hydrophilic film was chosen for general characterization employing a Scanning Probe Microscope(SPM)and an electrochemical measurement system.Following from the principles of the solid state chemistry and nanomechanics,intensive theoretical. analyses on the SPM images,the oxygen vacancy concentrations and the mechanism of the super hydrophilicity were made;further illuminations on a reaction equation of titania defect formation,a tentative universal surface physical mode for the wet ability,a concept,amphiphobicity,and surface design were carried out after the author's previous introduction and proposal in the end of 1999.
The Research Of Organic Electrolyte Solutions For Li-Ion Batteries, Quang Chao Zhuang, Shan Wu, Wen Yuan Liu, Zhao-Da Lu
The Research Of Organic Electrolyte Solutions For Li-Ion Batteries, Quang Chao Zhuang, Shan Wu, Wen Yuan Liu, Zhao-Da Lu
Journal of Electrochemistry
The characteristics of organic electrolyte solutions and its influences on the ion conductivity are summarized. The chemistry and electrochemistry of organic electrolyte solutions and characteristics of ordinary organic solvents are introduced. Progresses in studies of organic electrolyte solutions such as electrolyte salts, organic solvents, additives in recent years are reviewed, current situation of the studies of organic electrolyte solutions were also discussed.
The Investigation Of Prepare Condition For Micropores Membranes From Poly(Vinylidene Fluoride), Xu-Mei Ren, Feng Wu, Ying Bai, Hang-Jun Li, Xue Jie Huang
The Investigation Of Prepare Condition For Micropores Membranes From Poly(Vinylidene Fluoride), Xu-Mei Ren, Feng Wu, Ying Bai, Hang-Jun Li, Xue Jie Huang
Journal of Electrochemistry
The micropores membranes from Poly (vinylidene fluoride) were prepared by the phase inversion process. The effects of the casting solution composition, exposure time prior to coagulation and temperature of the coagulation bath on properties of prepared membranes were investigated. For all prepared membranes an asymmetric structure, sometimes without a dense skin layer, was observed.
Studies On The Properties Of The Anodic Films Formed On Lead- Lanthanum And Lead-Samarium Alloys In Sulfuric Acid Solution, Hou Tian Liu, Chun Xuao Yang, Hai Heng Liang, Jiong Yang, Wei-Fang Zhou
Studies On The Properties Of The Anodic Films Formed On Lead- Lanthanum And Lead-Samarium Alloys In Sulfuric Acid Solution, Hou Tian Liu, Chun Xuao Yang, Hai Heng Liang, Jiong Yang, Wei-Fang Zhou
Journal of Electrochemistry
AC voltammetry,linear sweep voltammetry,and cyclic voltammetry were applied to study the anodic corrosion of Pb,Pb 1.0at%La and Pb 1.0at%Sm electrodes in 4.5 mol·dm -3 H 2SO 4 solution (25 ℃).The experiment results show that samarium can inhibit the anodic corrosion of lead and decrease the impedance of anodic Pb(Ⅱ) film. Lanthanum can also decrease the impedance of the anodic Pb(Ⅱ)film, but the effect is smaller.
Revising State Recreational Use Statutes To Assist Private Property Owners And Providers Of Outdoor Recreational Activities, Terence J. Centner
Revising State Recreational Use Statutes To Assist Private Property Owners And Providers Of Outdoor Recreational Activities, Terence J. Centner
Buffalo Environmental Law Journal
No abstract provided.
The Role Of Causation In Science As Law And Proposed Changes In The Current Common Law Toxic Tort System, Clifford Fisher
The Role Of Causation In Science As Law And Proposed Changes In The Current Common Law Toxic Tort System, Clifford Fisher
Buffalo Environmental Law Journal
No abstract provided.
การคุ้มครองสิทธิผู้บริโภค, วินัย ดะห์ลัน
สัมภาษณ์ : พลตรีสืบพงษ์ สังขะรมย์ ผู้อำนวยการสถาบันวิจัยวิทยาศาสตร์การแพทย์ทหาร กรมแพทย์ทหารบก : สงครามอาวุธเคมี-ชีวภาพ, กรชนก รักษาเสรี
สัมภาษณ์ : พลตรีสืบพงษ์ สังขะรมย์ ผู้อำนวยการสถาบันวิจัยวิทยาศาสตร์การแพทย์ทหาร กรมแพทย์ทหารบก : สงครามอาวุธเคมี-ชีวภาพ, กรชนก รักษาเสรี
Environmental Journal
No abstract provided.
โครงการรางวัลนวัตกรรมแห่งประเทศไทย, ขนิษฐา มารุ่งเรือง
โครงการรางวัลนวัตกรรมแห่งประเทศไทย, ขนิษฐา มารุ่งเรือง
Environmental Journal
No abstract provided.
ก่ารจัดการอุบัติภัยจากสารเคมี : กรณีศึกษารถบรรทุก Acrylonitrile พลิกคว่ำ, สุชาดา ชินะจิตร
ก่ารจัดการอุบัติภัยจากสารเคมี : กรณีศึกษารถบรรทุก Acrylonitrile พลิกคว่ำ, สุชาดา ชินะจิตร
Environmental Journal
No abstract provided.
คู่มือการดำเนินชีวิตสำหรับประชาชน ปี 2541 และทฤษฎีใหม่ พระราชดำรัส พระราชทานเมื่อ วันที่ 4 ธันวาคม 2540
Environmental Journal
No abstract provided.
มองวิกฤติมหาอุทกภัย 2554 เพื่อแก้ไขวิกฤติภาวะโลกร้อน, มนนภา เทพสุด
มองวิกฤติมหาอุทกภัย 2554 เพื่อแก้ไขวิกฤติภาวะโลกร้อน, มนนภา เทพสุด
Environmental Journal
No abstract provided.
การเฝ้าระวังคุณภาพน้ำเบื้องต้นโดยใช้การงอกของเมล็ดพืช, วรางคณา วิเศษมณี ลี
การเฝ้าระวังคุณภาพน้ำเบื้องต้นโดยใช้การงอกของเมล็ดพืช, วรางคณา วิเศษมณี ลี
Environmental Journal
No abstract provided.
เทคโนโลยีสะอาด, วรรณา จินดาศรี
ประเทศไทย : มาตรการขนส่งสารเคมีและวัตถุอันตราย, วรรณี พฤฒิถาวร
ประเทศไทย : มาตรการขนส่งสารเคมีและวัตถุอันตราย, วรรณี พฤฒิถาวร
Environmental Journal
No abstract provided.
แนะนำโครงการของสถาบันวิจัยสภาวะแวดล้อม : การศึกษาเบื้องต้นต่อความต้องการใช้ระบบบำบัดน้ำเสียรวมในนิคมอุตสาหกรรมบางชัน, พักตร์ เพียรล้ำเลิศ
แนะนำโครงการของสถาบันวิจัยสภาวะแวดล้อม : การศึกษาเบื้องต้นต่อความต้องการใช้ระบบบำบัดน้ำเสียรวมในนิคมอุตสาหกรรมบางชัน, พักตร์ เพียรล้ำเลิศ
Environmental Journal
No abstract provided.
การแพร่กระจายของแก๊สเพอร์ฟลูออโรคาร์บอน (Pfcs)...แก๊สเรือนกระจกที่ไม่รู้จัก, เบญจลักษณ์ กาญจนเศรษฐ์
การแพร่กระจายของแก๊สเพอร์ฟลูออโรคาร์บอน (Pfcs)...แก๊สเรือนกระจกที่ไม่รู้จัก, เบญจลักษณ์ กาญจนเศรษฐ์
Environmental Journal
No abstract provided.
เสียงรบกวนจากโรงไฟฟ้าถ่านหิน, นพภาพร พานิช
เสียงรบกวนจากโรงไฟฟ้าถ่านหิน, นพภาพร พานิช
Environmental Journal
No abstract provided.
เสวนาวิชาการ : เรื่อง "น้ำท่วม ภัยแล้ง แผ่นดินไหว: ภัยที่คนไทยควรรู้เพื่อเตรียมรับมือ", สถาบันวิจัยสภาวะแวดล้อม, จุฬาลงกรณ์มหาวิทยาลัย
เสวนาวิชาการ : เรื่อง "น้ำท่วม ภัยแล้ง แผ่นดินไหว: ภัยที่คนไทยควรรู้เพื่อเตรียมรับมือ", สถาบันวิจัยสภาวะแวดล้อม, จุฬาลงกรณ์มหาวิทยาลัย
Environmental Journal
No abstract provided.
Table Of Contents Volume 12, Number 3/4, Fall 2001, Risk Editorial Board
Table Of Contents Volume 12, Number 3/4, Fall 2001, Risk Editorial Board
RISK: Health, Safety & Environment (1990-2002)
Table of contents for the journal RISK: Health, Safety & Environment (ISSN: 1073-8673)
Public Reaction To Mandated Language For U.S. Drinking Water Quality Reports, Branden B. Johnson
Public Reaction To Mandated Language For U.S. Drinking Water Quality Reports, Branden B. Johnson
RISK: Health, Safety & Environment (1990-2002)
The author discusses results of a survey evaluating the mandated language for United States drinking water quality reports.
Review Of: Social Trust And The Management Of Risk (George Cvetkovich & Ragnar E. Loftstedt, Eds.), Mahua Roy Chowdhury
Review Of: Social Trust And The Management Of Risk (George Cvetkovich & Ragnar E. Loftstedt, Eds.), Mahua Roy Chowdhury
RISK: Health, Safety & Environment (1990-2002)
Review of the book: Social Trust and the Management of Risk (George Cvetkovich & Ragnar E. Löfstedt, eds., Earthscan Publications Ltd. 1999). Tables, Figures, and Boxes, Acronyms and Abbreviations, Forward, Preface, Introduction, References, Index. ISBN 1-85383-604-4 [196 pp. $25.00. Paperback, 120 Pentonville Road, London, NI 9JN UK].
Journalists' Views Of The Environment: Issues And Challenges, Bernadette West, Jane Lewis, Michael Greenberg
Journalists' Views Of The Environment: Issues And Challenges, Bernadette West, Jane Lewis, Michael Greenberg
RISK: Health, Safety & Environment (1990-2002)
In advocating the use of an environmental handbook for journalists, the authors report on a survey of reporters and editors regarding salient environmental issues in different regions of the United States and e emphasis placed on environmental reporting in newsrooms.
Review Of: Eckard Kämper, Decision Making Under Risk In Organisations: The Case Of German Waste Management, Jeremy S. Cleverly
Review Of: Eckard Kämper, Decision Making Under Risk In Organisations: The Case Of German Waste Management, Jeremy S. Cleverly
RISK: Health, Safety & Environment (1990-2002)
Review of the book: Eckard K-Kämper, Decision Making Under Risk in Organisations: The Case of German Waste Management (Ashgate Publishing Co. 2000). Preface, Acknowledgements, Bibliography. ISBN 0-7546-1434-4 [183 pp. $69.95. Hardbound, 131 Main Street, Burlington, VT 05401- 5600].
Microstructure And Electrochemical Properties Of The Melt_Spinning Zr_(0.9)Ti_(0.1) (Ni,Co,Mn,V)_(2.1) Alloy, Ming-Fen Wen, Yu-Chun Zhai, Lian Chen, Min Tong, Hua Zhen, Rong-Jun Ma
Microstructure And Electrochemical Properties Of The Melt_Spinning Zr_(0.9)Ti_(0.1) (Ni,Co,Mn,V)_(2.1) Alloy, Ming-Fen Wen, Yu-Chun Zhai, Lian Chen, Min Tong, Hua Zhen, Rong-Jun Ma
Journal of Electrochemistry
The microstructure and electrochemical properties of Zr 0.9 Ti 0.1 (Ni,Co,Mn,V) 2.1 alloys prepared by both the melt_spinning method and the conventional induction melting were investigated. XRD studies show that Zr 0.9 Ti 0.1 (Ni,Co,Mn,V) 2.1 alloys at as_cast,melt_spinning and annealing are all face center cubic structure with C15 laves phase,the higher the melt_spinning rate,the more the amorphous content.The electrochemical measurements show that melt_spinning alloys have better active behavior,low discharge capacity(<280 mAh/g); but after annealed,the alloys are activated completely with 30 cycles, the capacities about 340 mAh/g are higher than those of as_cast and melt_spinning alloys;the annealec alloys have a better cycle stability than that of as_cast alloy, and the higher the melt_spinning rate is, the more stable the alloy becomes; at 300 mAh/g current density,the capacity of annealed 40 m/s alloy is up to 85% of the maximum capacity after 800 cycles, the capacity decay rate is about 6.9%.