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1999

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Photoelectrochemical Studies On The Tio2 Nanostructured Porous Film Sensitized By Cyanine Dye, Li Zhang, Mai-Zhi Yang, Xue-Bin Qiao, Yan-Zhong Hao, En-Qing Gao, Sheng-Min Cai Nov 1999

Photoelectrochemical Studies On The Tio2 Nanostructured Porous Film Sensitized By Cyanine Dye, Li Zhang, Mai-Zhi Yang, Xue-Bin Qiao, Yan-Zhong Hao, En-Qing Gao, Sheng-Min Cai

Journal of Electrochemistry

The photoelectrochemical behaviors of the TiO2 nanostructured porous film sensitized by cyanine dye were investigated in this paper. The results showed that the excitaed state level matched the conduction band edge of TiO2 nanoparticle. Therefore the sensitization of the dye can increase the photocurrent intensity of the TiO2 nanostructured electrode obviously and results in a red-shift of optical absorption from the ultra-violet region to the visible. As a result, the light-to-electricity conversion efficiency was improved evidently, the maximum value of IPCE has reached 12.1%.

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Electro-Oxidation Of Phenol On Sno2/Ti Electrodes Prepared By Thermal Oxidation, Qing-Song Zhang, Hui-Huang Wu Nov 1999

Electro-Oxidation Of Phenol On Sno2/Ti Electrodes Prepared By Thermal Oxidation, Qing-Song Zhang, Hui-Huang Wu

Journal of Electrochemistry

A SnO2/Ti electrode prepared by thermal oxidation was used as the anode for galvanostatic electrolysis in acidic solution containing phenol, the time-dependances of phenol concentration, chemical oxygen demand in solution(COD) and instantaneous current efficiency were determined during electrolysis. The results show that with the SnO2/Ti anode instead of Pt, the COD significantly decreases at the same charge passage, and average current efficiency of oxidation increases by three times. The mechanism for phenol oxidation at two electrodes was discussed.

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Investigation Of Sodium Hypophosphite Anodic Oxidizing Behavior In The Process Of Acid Electroless Nickel Deposition, Mei-Yuan Wang, Ya-Fei Kuang, Yan Xu Nov 1999

Investigation Of Sodium Hypophosphite Anodic Oxidizing Behavior In The Process Of Acid Electroless Nickel Deposition, Mei-Yuan Wang, Ya-Fei Kuang, Yan Xu

Journal of Electrochemistry

The anodic oxidizing behavior of sodium hypophosphite in the process of electroless nickle deposition (pH=5.5) was investigated with the linear potential sweep method and alternating current impedance. The results indicated that, the oxidation of NaH2PO2 was a complicated electrochemical process and affected by the concentration of NaH2PO2, the temperature of the bath, the sweep rate and the existence of nickel ion. The NaH2PO2 electrooxidation reaction was very likely preceded by heterogeneous interface transformation process, which might be the control step of the whole anodic process.

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The Preparation Of Flexible Polymeric Anode And The Measurement Of Its Protective Ability For Cathodic Protection, Ai-Ling Du, He-Ming Zhang, Ming-Zong Zhang, Shi-De Ma Nov 1999

The Preparation Of Flexible Polymeric Anode And The Measurement Of Its Protective Ability For Cathodic Protection, Ai-Ling Du, He-Ming Zhang, Ming-Zong Zhang, Shi-De Ma

Journal of Electrochemistry

The flexible electrode, whose shape can be changed freely, was made of ethenyl copolymer and conductive component and proper amount of additive for cathodic protection. The resistance of electrode was measured.In low concentration of H2SO4, the flexible electrode can be used as auxiliary anode to protect the carbon steel. The protection ability of the flexible auxiliary anode was measured too.

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Studies Of The Electrode Preparation Of Electrode From Lead Carbonate For Lead Acid Batteryⅰ. The Activation Of The Pme, Zhong-Xu Dai, Di-Hua Wang, Jun-Wei Jiang, Yun-Hong Zhou, Jin-Yun Zou Nov 1999

Studies Of The Electrode Preparation Of Electrode From Lead Carbonate For Lead Acid Batteryⅰ. The Activation Of The Pme, Zhong-Xu Dai, Di-Hua Wang, Jun-Wei Jiang, Yun-Hong Zhou, Jin-Yun Zou

Journal of Electrochemistry

Lead carbonate which was an intermediate product in lead hydrometallurgy without pollution of lead vapor and sulfur dioxide was selected as electrode material of lead-acid batteries. In the present work, the performances of PbO2/PbSO4 or PbSO4/Pb electrode transformed from PbCO3 have been investigated by powder microelectrode technique combined with cyclic voltammetry. The results show that the CV characteristics of either negative or positive electrode prepared from PbCO3 is as good as that of both electrodes made from lead oxide produced by mill machine,when a powder microelectrode with PbCO3 transformed into PbSO 4 …

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Prparation Of Nanocrystaline Tio2(Anatase) With High Thermal And Textural Sability By Electrochemical Method, Dao-Bao Chu, Xing-Fu Zhou, Chang-Jian Lin, Jian-Guang Tang Nov 1999

Prparation Of Nanocrystaline Tio2(Anatase) With High Thermal And Textural Sability By Electrochemical Method, Dao-Bao Chu, Xing-Fu Zhou, Chang-Jian Lin, Jian-Guang Tang

Journal of Electrochemistry

Titanium alkoxides were prepared by anodic dissolution of metallic titanium in absolute ethanol in the presence of HN(C2H5)2·HCl (electro-conductive additives). The solution was directly hydrolyzed to prepare nanocrystalline of TiO2 (about 10nm)by a sol-gel process. The precursor gels was calcined at T =450 ℃ and 720 ℃ for 30 min, and nanocrystalline of TiO2 (anatase) with high textural and thermal stability was obtained. FTIR, XRD, TEM were used to characterize the structure of titanium alkoxides and nanocrystalline of TiO2. The characteristics of nanocrystalline of TiO2 was depended on the …

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The Studies Of The (Photo) Electrochemical Character On The Electrodeposited Silver Indium Selenium Thin Films, Shao-Ai Xie, Xun-Nan Deng, You-Jin Kua Nov 1999

The Studies Of The (Photo) Electrochemical Character On The Electrodeposited Silver Indium Selenium Thin Films, Shao-Ai Xie, Xun-Nan Deng, You-Jin Kua

Journal of Electrochemistry

A photoelectrochemical cell (PEC) is constructed, using an AgInSe2 film photoanode made from electrodeposition and a platinium electrode in aqueous polyiodide or polysufide electrolyte. The Voc and Isc of PEC have been tested and measured, and the effect of chemical decoration on the photoanodes also studied.

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Studies On Methods Of Fuel Cells Electrodes Preparation, Jun Gu, Sheng Sui, Guang-Qiang Li, Zhitong Sui Nov 1999

Studies On Methods Of Fuel Cells Electrodes Preparation, Jun Gu, Sheng Sui, Guang-Qiang Li, Zhitong Sui

Journal of Electrochemistry

In fuel cells, the structure of electrodes is an important factor which effect the cell performance. To improve the structure and the performance of electrodes, a new method of providing fuel cell electrodes is proposed in this paper. PTFE (polytetrafluoroethylene) and ethyne black was ground for about half an hour in a high-speed grinder, then the catalyst was added into the grinder and milled for an hour. This milled catalyst was transferred into a mixer followed by the addition of surface-active agent. After a suspension was formed, it was filtered under vacuum condition.Then a thin uniform filter-cake of the catalyst …

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3d Micro-Ct For Functional Genomics, R. H. Johnson, Robert C. Molthen, Christopher C. Hanger, Kelly Lynn Karau, Steven Haworth, Christopher Dawson Nov 1999

3d Micro-Ct For Functional Genomics, R. H. Johnson, Robert C. Molthen, Christopher C. Hanger, Kelly Lynn Karau, Steven Haworth, Christopher Dawson

Biomedical Engineering Faculty Research and Publications

No abstract provided.

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A Novel Reaction Region Moving Electrode System For Electrochemical Power Sources, Jin-Kua You, Que Tu, Zheng-Jian Wang, Jie Sun, Zu-Geng Lin Nov 1999

A Novel Reaction Region Moving Electrode System For Electrochemical Power Sources, Jin-Kua You, Que Tu, Zheng-Jian Wang, Jie Sun, Zu-Geng Lin

Journal of Electrochemistry

In most of practical rechargeable batteries, charging/discharging process is always concerned with phase-transformation in the solid state. Due to the irreversibility of the phase-transformation, the cyclic performance of the rechargeable batteries are limited. In this paper, a novel reaction-region moving counter electrode system is constructed in our laboratory. The electrode system is operated at room temperature and cycled in solid-liquid phase during charging/discharging processes. With this electrode, the metal-complexes are firstly deposited (i.e. charging process) on the nearest working electrode and gradually extended to those another working electrodes several centimeters away from the counter electrode. The deposite is dissolved again …

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November 27, 1999 (Pages 5983-6090), Pennsylvania Legislative Reference Bureau Nov 1999

November 27, 1999 (Pages 5983-6090), Pennsylvania Legislative Reference Bureau

Volume 29 (1999)

No abstract provided.

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Volume 37, Number 14: November 26, 1999, University Of North Dakota Nov 1999

Volume 37, Number 14: November 26, 1999, University Of North Dakota

University Letter Archive

No abstract provided.

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Inside Usf, November 26 - December 16, 1999, University Of South Florida. Office Of Public Affairs Nov 1999

Inside Usf, November 26 - December 16, 1999, University Of South Florida. Office Of Public Affairs

Inside USF

The November 26 - December 16, 1999, issue of Inside USF.

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Dimensional Strategies And The Minimization Problem: Barrier-Avoiding Algorithms, Daniel B. Faken, A. F. Voter, David L. Freeman, J. D. Doll Nov 1999

Dimensional Strategies And The Minimization Problem: Barrier-Avoiding Algorithms, Daniel B. Faken, A. F. Voter, David L. Freeman, J. D. Doll

Chemistry Faculty Publications

In the present paper we examine the role of dimensionality in the minimization problem. Since it has such a powerful influence on the topology of the associated potential energy landscape, we argue that it may prove useful to alter the dimensionality of the space of the original minimization problem. We explore this general idea in the context of finding the minimum energy geometries of Lennard-Jones clusters. We show that it is possible to locate barrier-free, high-dimensional pathways that connect local, three-dimensional cluster minima. The performance of the resulting, “barrier-avoiding minimization” algorithm is examined for clusters containing as many as 55 …

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Recent Laboratory Tests Of A Hard X-Ray Solar Flare Polarimeter, Mark L. Mcconnell, John R. Macri, M Mcclish, Jack Ryalls Nov 1999

Recent Laboratory Tests Of A Hard X-Ray Solar Flare Polarimeter, Mark L. Mcconnell, John R. Macri, M Mcclish, Jack Ryalls

Space Science Center

We report on the development of a Compton scatter polarimeter for measuring the linear polarization of hard X-rays (50 - 300 keV) from solar flares. Such measurements would be useful for studying the directivity (or beaming) of the electrons that are accelerated in solar flares. We initially used a simple prototype polarimeter to successfully demonstrate the reliability of our Monte Carlo simulation code and to demonstrate our ability to generate a polarized photon source in the lab. We have recently fabricated a science model based on a modular design concept that places a self-contained polarimeter module on the front-end of …

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The Cord Weekly (November 24, 1999) Nov 1999

The Cord Weekly (November 24, 1999)

The Cord

No abstract provided.

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11/24/1999 Obituary Records, Hawaii Obituaries Nov 1999

11/24/1999 Obituary Records, Hawaii Obituaries

Obituaries

List of Obituaries for individuals who passed away on 11/24/1999. Scroll down to see the names and obituary description.

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November 24, 1999 Cal Poly Report, Public Affairs Office Nov 1999

November 24, 1999 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

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On The Green Vol. 30 No. 5 November 24, 1999, Gallaudet University Nov 1999

On The Green Vol. 30 No. 5 November 24, 1999, Gallaudet University

1991-2000

On the Green is an internal publication of Gallaudet College, which later became Gallaudet University. It notified employees of updates around the campus and in the broader community, including new construction and the establishment of new academic programs. Running until 2010, it was supplanted by various forms of online mass communications across multiple audiences.

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Three-Dimensional Structure Of A Complex Between The Death Domains Of Pelle And Tube, Tsan Xiao, Par Towb, Steven A. Wasserman, Stephen R. Sprang Nov 1999

Three-Dimensional Structure Of A Complex Between The Death Domains Of Pelle And Tube, Tsan Xiao, Par Towb, Steven A. Wasserman, Stephen R. Sprang

Biological Sciences Faculty Publications

The interaction of the serine/threonine kinase Pelle and adaptor protein Tube through their N-terminal death domains leads to the nuclear translocation of the transcription factor Dorsal and activation of zygotic patterning genes during Drosophila embryogenesis. Crystal structure of the Pelle and Tube death domain heterodimer reveals that the two death domains adopt a six-helix bundle fold and are arranged in an open-ended linear array with plastic interfaces mediating their interactions. The Tube death domain has an insertion between helices 2 and 3, and a C-terminal tail making significant and indispensable contacts in the heterodimer. In vivo assays of Pelle and …

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Central Florida Future, November 24, 1999 Nov 1999

Central Florida Future, November 24, 1999

Central Florida Future

Get the most out of your internship; Dancers raise awareness for culture; Disappearing sorority seeks a return to its once-popular status.

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Banner News, Patrice Harson, Mandy Olson, Scott Cue, Jay Cue Nov 1999

Banner News, Patrice Harson, Mandy Olson, Scott Cue, Jay Cue

Banner News

No abstract provided.

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Ke Alakai, Vol. 60, No. 14 (1999-11-24), Brigham Young University Hawaii Nov 1999

Ke Alakai, Vol. 60, No. 14 (1999-11-24), Brigham Young University Hawaii

Ke Alaka'i

No abstract provided.

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Newscast, November 24, 1999, Illinois State University, College Of Applied Science And Technology Nov 1999

Newscast, November 24, 1999, Illinois State University, College Of Applied Science And Technology

newsCAST

Newsletter of the Illinois State University College of Applied Science and Technology

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The Montclarion, November 24, 1999, The Montclarion Nov 1999

The Montclarion, November 24, 1999, The Montclarion

The Montclarion

Student Newspaper of Montclair State University

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The Murray Ledger And Times, November 24, 1999, The Murray Ledger And Times Nov 1999

The Murray Ledger And Times, November 24, 1999, The Murray Ledger And Times

The Murray Ledger & Times

No abstract provided.

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Interacting Topological Defects On Frozen Topographies, Mark Bowick, David R. Nelson, Alex Travesset Nov 1999

Interacting Topological Defects On Frozen Topographies, Mark Bowick, David R. Nelson, Alex Travesset

Physics - All Scholarship

We propose and analyze an effective free energy describing the physics of disclination defects in particle arrays constrained to move on an arbitrary two-dimensional surface. At finite temperature the physics of interacting disclinations is mapped to a Laplacian Sine-Gordon Hamiltonian suitable for numerical simulations. We then specialize to the case of a spherical crystal at zero temperature. The ground state is analyzed as a function of the ratio of the defect core energy to the Young's modulus. We argue that the core energy contribution becomes less and less important in the limit R >> a, where R is the radius of …

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Spartan Daily, November 23, 1999, San Jose State University, School Of Journalism And Mass Communications Nov 1999

Spartan Daily, November 23, 1999, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily (School of Journalism and Mass Communications)

Volume 113, Issue 60

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Mustang Daily, November 23, 1999 Nov 1999

Mustang Daily, November 23, 1999

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

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The New Hampshire, Vol. 89 [90], No. 24 (Nov. 23, 1999), The New Hampshire Nov 1999

The New Hampshire, Vol. 89 [90], No. 24 (Nov. 23, 1999), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 89, but it is the 90th volume in the series. This was corrected in pencil.

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