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2008

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Design And Fabrication Of The High Efficient Platinum-Nanoporous Gold Catalysts, Zhao-Na Liu, Jin-Tao Zhang, Fang Tian, Peng-Peng Liu, Hou-Yi Ma, Yi Ding Aug 2008

Design And Fabrication Of The High Efficient Platinum-Nanoporous Gold Catalysts, Zhao-Na Liu, Jin-Tao Zhang, Fang Tian, Peng-Peng Liu, Hou-Yi Ma, Yi Ding

Journal of Electrochemistry

The nanoporous gold(NPG) electrodes with uniform pore sizes and ligaments were prepared by using a simple dealloying method.The as-prepared NPG showed high catalytic activity towards the oxidation of formic acid and formaldehyde.After tiny amount of platinum was deposited onto the NPG substrate,not only the structure stability of NPG was greatly improved,but also the Pt-Au bimetallic catalysts displayed the better catalytic activity and the stronger poison resistance towards the electrooxidation of small organic molecules than the bulk platinum due to synergistic effect between Au and Pt compositions.

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The Endpoint Determination In Hydrochloric Pickling By Electrochemistry Method, Shu-Jie Chen, Chun-Jie Ye, Hong-Liang Pan Aug 2008

The Endpoint Determination In Hydrochloric Pickling By Electrochemistry Method, Shu-Jie Chen, Chun-Jie Ye, Hong-Liang Pan

Journal of Electrochemistry

Pickling is an effective way to remove the oxide scale covered on steel materials.It is vital to determine the endpoint in the course of pickling process investigation.According to the reaction process of the oxide scale covered on hot-rolling strips with the hydrochloric acid,a method for determining the endpoint of pickling based on electrochemical principle was suggested.In the pickling experimentation of hot-rolling strips,an accurate precision can be obtained using this method.

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A Study Of Pd-Ir On Nickel Foam Cathode For Aluminum-Hydrogen Peroxide Semi-Fuel Cells, Ding-Wang Zhu, Dan-Dan Chen, Bi-Jin Li, Gui-Ling Wang, Dian-Xue Cao Aug 2008

A Study Of Pd-Ir On Nickel Foam Cathode For Aluminum-Hydrogen Peroxide Semi-Fuel Cells, Ding-Wang Zhu, Dan-Dan Chen, Bi-Jin Li, Gui-Ling Wang, Dian-Xue Cao

Journal of Electrochemistry

The Pd-Ir/Ni electrodes were prepared by electrodeposition of Pd and Ir on the porous nickel foam surface.The structure,composition and state of the Pd-Ir catalyst were analyzed using SEM and XPS.The catalytic performance of Pd-Ir/Ni for H2O2 electroveduction at different concentrations of H2O2 were investigated.A limiting current density of 318 mA/cm2 was obtained with 0.4 mol/L H2O2.The aluminum-hydrogen peroxide semi-fuel cells using different aluminum alloys as anode and Pd-Ir/Ni as cathode were assembled and tested.It was found that the fuel cell with aluminum-manganese alloy anode demonstrated a maximum power density …

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Electrocatalytic Oxidation Of Salicylic Acid At Novel Gold Nanoparticle-Modified Glassy Carbon Electrode, Yan-Ping Cui, Chang-Zhu Yang, Jian Huang, Wen-Hong Pu, Jing-Dong Zhang Aug 2008

Electrocatalytic Oxidation Of Salicylic Acid At Novel Gold Nanoparticle-Modified Glassy Carbon Electrode, Yan-Ping Cui, Chang-Zhu Yang, Jian Huang, Wen-Hong Pu, Jing-Dong Zhang

Journal of Electrochemistry

A gold nano-particles modified glassy carbon electrode(GNP/GCE) was prepared by the"seed-mediated gold nano-particles growth method".Field emission scanning electron microscopy,ultraviolet-visible(UV-vis) spectroscopy analysis and electroalaylsis were employed to study the morphology and electrochemical performances.The resulting electrode showed excellent electro-catalytic activity toward the oxidation of salicylic acid and the response sensitivity was 1.8 fold than that obtained on GCE.Good linear relationship was obtained between response current and salicylic acid concentration in the range of 5.0 × 10-7 ~8.0 × 10-5 mol/L,which could be used in the detection of trace salicylic acid.

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Performance Of Magnetic Field Coupled With Electrochemical Process For Preparing Polyaluminum Chloride, Ke-Wu Pi, Wen-Qi Gong, Zheng-Qing Huang Aug 2008

Performance Of Magnetic Field Coupled With Electrochemical Process For Preparing Polyaluminum Chloride, Ke-Wu Pi, Wen-Qi Gong, Zheng-Qing Huang

Journal of Electrochemistry

Polyaluminum chloride(PAC) was prepared by electrochemical process coupled with magnetic field paralleling to the gravitation direction.The electrolyte of 0.1 M AlCl3 solution was used,with the iron plates as cathode and aluminum sheets as anode.PAC of 0.6 M total aluminum(AlT),83.2% Alb to AlT and basicity(Ba)=2.4 was synthesized when magnetic flux density was 0.4T,the distance of electrodes was 15 mm,the voltage of electrolysis cell was 2.4 V and current density was 300 A/m2.Under above experimental conditions,the voltage efficiency,energy efficiency and electrodes surface area to reduction cells of electrochemical reactor were 85.2%,81.5% and 140.1m2/m3,respectively.The polarization curves determined by constant-current method showed that the …

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Applications Of Electroless Deposition Ni-Cu-P Coating On The Gas Condensing Exchanger, Li-Jun Yang, Gui-Chang Liu, Sui-Lin Wang, Zhi-Cong Shi Aug 2008

Applications Of Electroless Deposition Ni-Cu-P Coating On The Gas Condensing Exchanger, Li-Jun Yang, Gui-Chang Liu, Sui-Lin Wang, Zhi-Cong Shi

Journal of Electrochemistry

The effects of copper sulfate concentration in the plating solution on the composition,the structure and the anticorrosion properties of Ni-Cu-P deposited coating were studied by EPMA, XRD and polarization curves.The anticorrosion properties of Ni-Cu-P deposited coating was optimal as the copper sulfate concentration in the plating solution was 0.5 g·L-1. The electrochemical anticorrosion properties of Ni-Cu-P, Ni-P deposited coatings and copper plates were investigated in the gas condensate. The self-corrosion potential of Ni-Cu-P deposited coatings was low, the self-corrosion current density was small, and the electrochemical impedance was the highest. Therefore, the electroless Ni-Cu-P coatings can be used …

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Preparation And Supercapacitive Properties Of Co(Oh)2/Nay Composite, Chi Ma, Ling-Bin Kong, Yong-Chun Luo, Long Kang Aug 2008

Preparation And Supercapacitive Properties Of Co(Oh)2/Nay Composite, Chi Ma, Ling-Bin Kong, Yong-Chun Luo, Long Kang

Journal of Electrochemistry

The Co(OH)2/NaY composite was prepared by chemical precipitation method and then tested as an active electrode material for an electrochemical supercapacitor.The results indicated that the composite displayed superior capacitive performance.The maximum specific capacitance of Co(OH)2 was 632.5 F/g.The structure and electrochemical properties of the composite were also discussed.

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Corrosion Inhibition Of Self-Assembled Films On Iron By Electrochemical Impedance Spectroscopy, Yuan-Yuan Feng, Shen-Hao Chen, Juan-Juan Zhou, Wen-Juan Guo Aug 2008

Corrosion Inhibition Of Self-Assembled Films On Iron By Electrochemical Impedance Spectroscopy, Yuan-Yuan Feng, Shen-Hao Chen, Juan-Juan Zhou, Wen-Juan Guo

Journal of Electrochemistry

The self-assembled films of tetradecylamine were formed on iron surface, and the inhibition ability of which for iron corrosion in 0.5 mol/L H2SO4 solutions was studied by electrochemical impedance spectroscopy technique. Results indicated that longer immersion time would result in stronger inhibition ability of the films. The maximal inhibition efficiency(IE) of the tetradecylamine films was 68.7%. When the tetradecylamine films were modified by dodecylthiol, the mixed films became denser and more stable, thus the inhibition ability increased remarkably. The η of the mixed films increased to 78.2%.

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Control Of Autonomous Robot Teams In Industrial Applications, Athanasios Tsalatsanis Aug 2008

Control Of Autonomous Robot Teams In Industrial Applications, Athanasios Tsalatsanis

USF Tampa Graduate Theses and Dissertations

The use of teams of coordinated mobile robots in industrial settings such as underground mining, toxic waste cleanup and material storage and handling, is a viable and reliable approach to solving such problems that require or involve automation. In this thesis, abilities a team of mobile robots should demonstrate in order to successfully perform a mission in industrial settings are identified as a set of functional components. These components are related to navigation and obstacle avoidance, localization, task achieving behaviors and mission planning. The thesis focuses on designing and developing functional components applicable to diverse missions involving teams of mobile …

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Exponent Vol. 38, No. 8, 2008-08-27, University Of Alabama In Huntsville Aug 2008

Exponent Vol. 38, No. 8, 2008-08-27, University Of Alabama In Huntsville

2008

No abstract provided.

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Daily Eastern News: August 27, 2008, Eastern Illinois University Aug 2008

Daily Eastern News: August 27, 2008, Eastern Illinois University

August

No abstract provided.

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Precipitation Rates And Atmospheric Heat Transport During The Cenomanian Greenhouse Warming In North America: Estimates From A Stable Isotope Mass-Balance Model, David F. Ufnar, Greg A. Ludvigson, Luis González, Darren R. Gröcke Aug 2008

Precipitation Rates And Atmospheric Heat Transport During The Cenomanian Greenhouse Warming In North America: Estimates From A Stable Isotope Mass-Balance Model, David F. Ufnar, Greg A. Ludvigson, Luis González, Darren R. Gröcke

Faculty Publications

Stable isotope mass-balance modeling results of meteoric δ18O values from the Cenomanian Stage of the Cretaceous Western Interior Basin (KWIB) suggest that precipitation and evaporation fluxes were greater than that of the present and significantly different from simulations of Albian KWIB paleohydrology. Sphaerosiderite meteoric δ18O values have been compiled from the Lower Tuscaloosa Formation of southwestern Mississippi (25°N paleolatitude), The Dakota Formation Rose Creek Pit, Fairbury Nebraska (35°N) and the Dunvegan Formation of eastern British Columbia (55°N paleolatitude). These paleosol siderite δ18O values define a paleolatitudinal gradient ranging from − 4.2‰ VPDB at 25°N …

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Multiple Positive Solutions In The Sense Of Distributions Of Singular Bvps On Time Scales And An Application To Emden-Fowler Equations, Ravi P. Agarwal, Victoria Otero-Espinar, Kanishka Perera, Dolores R. Vivero Aug 2008

Multiple Positive Solutions In The Sense Of Distributions Of Singular Bvps On Time Scales And An Application To Emden-Fowler Equations, Ravi P. Agarwal, Victoria Otero-Espinar, Kanishka Perera, Dolores R. Vivero

Mathematics and System Engineering Faculty Publications

This paper is devoted to using perturbation and variational techniques to derive some sufficient conditions for the existence of multiple positive solutions in the sense of distributions to a singular second-order dynamic equation with homogeneous Dirichlet boundary conditions, which includes those problems related to the negative exponent Emden-Fowler equation.

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Developmental Aspects Of Diabetes Knowledge, Kari Morgan Aug 2008

Developmental Aspects Of Diabetes Knowledge, Kari Morgan

Theses and Dissertations

The Test of Diabetes Knowledge (TDK) was studied to determine its appropriateness for children. Early onset diabetes was examined for residual effects on poorer adolescent understanding of diabetes and problem solving that could affect self-care behaviors. Participant groups were created as children (<12) and adolescents (≥12). A second division created a group of adolescents with early onset disease (EOD < 12 years) and with late onset disease (LOD >12 years). Participants were predominantly Caucasian and from middle class families. 51% were boys with an average age of 12.95 years, disease duration of 4.35 years and onset age of 8.58 years. Children scored significantly lower and responded “I don’t know” significantly more often for all levels of knowledge when compared to adolescents. EOD and LOD group …

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Grand Valley Forum, Volume 033, Number 01, August 26, 2008, Grand Valley State University Aug 2008

Grand Valley Forum, Volume 033, Number 01, August 26, 2008, Grand Valley State University

2008-2009, Volume 33

Grand Valley Forum is Grand Valley State's faculty and staff newsletter, published from 1976 to the present.

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Nanoparticle Aggregation And Relaxation Effects In Ferrofluids: Studied Through Anisotropic Light Scattering, Corneliu Rablau, Prem Vaishnava, Sudakar Chandran, Ronald Tackett, Gavin Lawes, Ratna Naik Aug 2008

Nanoparticle Aggregation And Relaxation Effects In Ferrofluids: Studied Through Anisotropic Light Scattering, Corneliu Rablau, Prem Vaishnava, Sudakar Chandran, Ronald Tackett, Gavin Lawes, Ratna Naik

Physics Publications

We have investigated the aggregation and dissociation dynamics of 6-nm size Fe3O4 nanoparticles coated by tetra methyl ammonium hydroxide (TMAH) and the same size γ-Fe2O3 nanoparticles precipitated inside an alginate hydrogel matrix, both in aqueous suspensions, using dc magnetic-field-induced time-dependent light scattering patterns. For the Fe3O4 ferrofluid, a strong anisotropy in light scattering was observed for light propagating perpendicular to the magnetic field. This behavior is attributed to the aggregation of the nanoparticles into chain-like and column-like structures oriented parallel to the magnetic field. A significantly different behavior is observed for the aqueous suspension of γ-Fe2O3 nanoparticles precipitated in alginate …

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French Form B: Discipline Objectives And Requirements 08/26/2008, Curriculum Committee Aug 2008

French Form B: Discipline Objectives And Requirements 08/26/2008, Curriculum Committee

Curriculum Committee Reports

No abstract provided.

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French Form B: Discipline Objectives And Requirements 08/26/2008, Curriculum Committee Aug 2008

French Form B: Discipline Objectives And Requirements 08/26/2008, Curriculum Committee

Curriculum Committee Reports

No abstract provided.

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Benchmark Experiments For Higher-Order And Full-Stokes Ice Sheet Models (Ismip-Hom), F. Pattyn, L. Perichon, A. Aschwanden, B. Breuer, B. De Smedt, O. Gagliardini, G. H. Gudmundsson, R. C. A. Hindmarsh, A. Hubbard, Jesse V. Johnson, T. Kleiner, Y. Konovalov, C. Martin, A. J. Payne, D. Pollard, S. Price, M. Rückamp, F. Saito, O. Soucek, S. Sugiyama, T. Zwinger Aug 2008

Benchmark Experiments For Higher-Order And Full-Stokes Ice Sheet Models (Ismip-Hom), F. Pattyn, L. Perichon, A. Aschwanden, B. Breuer, B. De Smedt, O. Gagliardini, G. H. Gudmundsson, R. C. A. Hindmarsh, A. Hubbard, Jesse V. Johnson, T. Kleiner, Y. Konovalov, C. Martin, A. J. Payne, D. Pollard, S. Price, M. Rückamp, F. Saito, O. Soucek, S. Sugiyama, T. Zwinger

Computer Science Faculty Publications

We present the results of the first ice sheet model inter comparison project for higher-order and full-Stokes ice sheet models. These models are compared and verified in a series of six experiments of which one has an analytical solution obtained from a perturbation analysis. The experiments are applied to both 2-D and 3-D geometries; five experiments are steady-state diagnostic, and one has a time dependent prognostic solution. All participating models give results that are in close agreement. A clear distinction can be made between higher-order models and those that solve the full system of equations. The full-Stokes models show a …

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Guatemala: Development Of A Ram Pump, Gordon Schweitzer Aug 2008

Guatemala: Development Of A Ram Pump, Gordon Schweitzer

ETHOS Technical Reports

Purpose: The report highlights the research, development, installation of a ram pump water system within a coffee cooperative named Palmera Xolhuitz between May 14th, 2008 and July 23rd, 2008 through the nongovernmental organization Appropriate Infrastructure Development Group (AIDG). Scope: This test installation provides water for nearly two hundred residents who financed the project using community contracts. Furthermore, this installation was the first ram pump installation of AIDG. Findings: Test methods, ram pump installation techniques, and troubleshooting techniques created new information within the ram pump field. Conclusions: Through analyzing and developing construction techniques, efficiency test rubrics, and design improvements, the ram …

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08-26-2008 New Faculty And Employee Job Changes Announced At Swosu, Southwestern Oklahoma State University Aug 2008

08-26-2008 New Faculty And Employee Job Changes Announced At Swosu, Southwestern Oklahoma State University

THE BARK ARCHIVE 2008

Southwestern Oklahoma State University has several new faculty and administrators during the 2008-09 year and several employees have had a change in their administrative or faculty status.

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The Hilltop 8-26-2008, Hilltop Staff Aug 2008

The Hilltop 8-26-2008, Hilltop Staff

The Hilltop: 2000 - 2010

No abstract provided.

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Hotline Press Newspaper- Aug 26,2008 Vol 26 No 10, Hotline Press Newspaper Aug 2008

Hotline Press Newspaper- Aug 26,2008 Vol 26 No 10, Hotline Press Newspaper

Hotline Press Newspaper 2008

No abstract provided.

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Independent- Aug. 26, 2008, Lenny Ocasio Aug 2008

Independent- Aug. 26, 2008, Lenny Ocasio

The Independent (1988-present)

No abstract provided.

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Adolescent Adherence To Orthopedic Brace Wear: A Behavioral Assessment Of High Risk Factors, Teresa J. Lynch Aug 2008

Adolescent Adherence To Orthopedic Brace Wear: A Behavioral Assessment Of High Risk Factors, Teresa J. Lynch

Master's Theses and Doctoral Dissertations

An important challenge physicians encounter when treating adolescent patients with moderate scoliotic curves is that the adolescents may not wear the brace as prescribed or long enough for the brace to be effective. The present investigation used electronic monitoring and temperature probes to investigate whether the adolescents were wearing their brace during events identified using a modified Daily Reconstruction Method for six randomly selected days over a 14-day period. It was hypothesized that environmental, interpersonal, and intrapersonal variables during the events would be predictive of objective brace-wear across and within participants, and patterns of significant variables would differ from subjective …

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Applying Game Theory In Libraries: Review And Preview, Ying Zhong, Aaron Hegde Aug 2008

Applying Game Theory In Libraries: Review And Preview, Ying Zhong, Aaron Hegde

Library Philosophy and Practice (e-journal)

The paradigm of game theory and its application have aroused increasing interest among researchers in multidisciplinary settings. An information society involves more opportunities and uncertainties; therefore, game theory is expected more often than ever to provide insights into different types of issues of decision-making in economics, management, political science, psychology, and philosophy. A library and its administration, as an important market player in an information society, should have a better understanding about the nature of games and strategies as well. This article starts with a brief introduction to game theory, reviews selected literature, and emphasizes the application of game theory …

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Lanthorn, Vol. 43, No. 03, August 25, 2008, Grand Valley State University Aug 2008

Lanthorn, Vol. 43, No. 03, August 25, 2008, Grand Valley State University

Volume 43, July 10, 2008 - June 7, 2009

Lanthorn is Grand Valley State's student newspaper, published from 1968 to the present.

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Confidence Intervals For Negative Binomial Random Variables Of High Dispersion, David Shilane, Alan E. Hubbard, S N. Evans Aug 2008

Confidence Intervals For Negative Binomial Random Variables Of High Dispersion, David Shilane, Alan E. Hubbard, S N. Evans

U.C. Berkeley Division of Biostatistics Working Paper Series

This paper considers the problem of constructing confidence intervals for the mean of a Negative Binomial random variable based upon sampled data. When the sample size is large, we traditionally rely upon a Normal distribution approximation to construct these intervals. However, we demonstrate that the sample mean of highly dispersed Negative Binomials exhibits a slow convergence to the Normal in distribution as a function of the sample size. As a result, standard techniques (such as the Normal approximation and bootstrap) that construct confidence intervals for the mean will typically be too narrow and significantly undercover in the case of high …

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The Impostor Phenomenon : An Exploratory Study Of The Socializing Factors That Contribute To Feelings Of Fraudulence Among High Achieving, Diverse Female Undergraduates, Sara E. Wiener Aug 2008

The Impostor Phenomenon : An Exploratory Study Of The Socializing Factors That Contribute To Feelings Of Fraudulence Among High Achieving, Diverse Female Undergraduates, Sara E. Wiener

Theses, Dissertations, and Projects

This two phase study explored what socializing factors contribute to feelings of fraudulence among high achieving, diverse female undergraduates aged 18-22. By means of a questionnaire and the Clance IP Scale, Phase I of the study captured demographic information of participants who self identified as feeling like a fake or fraud in academia and the degree to which their fraudulent feelings affect their lives. During Phase II, 10 participants whose scores on the Scale were 61 and above were interviewed to collect qualitative data pertaining to each participant's social and academic history and their perspectives on what factors contribute to …

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The Collegian (2008-08-25), Isis Lopez Aug 2008

The Collegian (2008-08-25), Isis Lopez

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 61, No. 2

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