Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2011

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 7321 - 7350 of 108273

Full-Text Articles in Entire DC Network

Electrochemical Properties Of Tungstogermanate And Electrocatalysis Of H2O2 On Gew11Co/P-Opd/Gc Electrode, Li-Li Zhu, Jian-Ying Qu, Jue Wang, Hao-Yue Feng Nov 2011

Electrochemical Properties Of Tungstogermanate And Electrocatalysis Of H2O2 On Gew11Co/P-Opd/Gc Electrode, Li-Li Zhu, Jian-Ying Qu, Jue Wang, Hao-Yue Feng

Journal of Electrochemistry

The electrochemical properties of Co-substituted trimeric tungstogermanate containing Keggin fragments were studied. Cyclic voltammograms revealed two couples of reversible redox peaks on glassy carbon (GC) electrode in acid solutions. They corresponded to two-electron reductions accompanying by the additions of four protons and three protons, respectively, both were controlled by adsorption. The differences in the peak potentials of 2-electron-4-proton and 2-electron-3-proton reactions were 31 mV and 35 mV, respectively..Furthermore, the tungstogermanate (GeW11Co) modified GC electrode with functionalization by poly(o-phenylenediamine) (P-oPD) was prepared readily by electropolymerization. The GeW11Co/P-oPD/GC electrode could electrocatalyze the reduction of hydrogen peroxide, which showed good stability and quick …

Go to article

Electrochemical Studies On Surface Inclusion Of Β-Cyclodextrin With Adriamycin, Jian Shi, Qi-Ping Zhang, Nan-Ping Wang Nov 2011

Electrochemical Studies On Surface Inclusion Of Β-Cyclodextrin With Adriamycin, Jian Shi, Qi-Ping Zhang, Nan-Ping Wang

Journal of Electrochemistry

The β-cyclodextrin (β-CD) modified gold electrode (β-CD/Au) was fabricated to study the electrochemical behavior of adriamycin (ADM). The results indicated that the complexing reaction of ADM with β-CD took place at the β-CD/Au surface. At 25 °C, the complexing constant (K) was 9.54×104 L·mol-1 in pH=7.0. The K values changed regularly with temperature, and the most suitable temperature of the surface inclusion reaction was 30 ℃. The complexing reaction of ADM with β-CD at the β-CD/Au surface could undergo the quasi-reversible electrochemical reaction with the rate constant being 0.0995 s-1. The cathodic peak current (Ip) of …

Go to article

November 28, 2011 Nov 2011

November 28, 2011

The Gavel Gazette

No abstract provided.

Go to article

Winter Wonderland Nov 2011

Winter Wonderland

News Releases

No abstract provided.

Go to article

Conference Call Of The Federal Open Market Committee On November 28, 2011, Federal Reserve System: Board Of Governors: Federal Open Market Committee (Fomc) Nov 2011

Conference Call Of The Federal Open Market Committee On November 28, 2011, Federal Reserve System: Board Of Governors: Federal Open Market Committee (Fomc)

Documents

No abstract provided.

Go to article

Misconceptions About Lehman Brothers' Bankruptcy And The Role Derivatives Played, Kimberly Summe Nov 2011

Misconceptions About Lehman Brothers' Bankruptcy And The Role Derivatives Played, Kimberly Summe

Documents

No abstract provided.

Go to article

Brittany Wolf Earns Avca Third Team All-America Honors, Armstrong State University Nov 2011

Brittany Wolf Earns Avca Third Team All-America Honors, Armstrong State University

Armstrong Athletics: Women's Volleyball News (Archived)

Brittany Wolf Earns AVCA Third Team All-America Honors. Armstrong Atlantic State University junior middle hitter Brittany Wolf has been named to the American Volleyball Coaches Association (AVCA) Division II All-America Third Team with the release of the organization's squads today.

Go to article

State V. Guel Appellant's Brief Dckt. 38149 Nov 2011

State V. Guel Appellant's Brief Dckt. 38149

Not Reported

No abstract provided.

Go to article

State V. Ligon-Bruno Appellant's Brief Dckt. 38691 Nov 2011

State V. Ligon-Bruno Appellant's Brief Dckt. 38691

Not Reported

No abstract provided.

Go to article

What Strategies Are Guiding Chinese Investments In Brazil?, Inter-American Dialogue's Latin American Energy Advisor Nov 2011

What Strategies Are Guiding Chinese Investments In Brazil?, Inter-American Dialogue's Latin American Energy Advisor

Latin American Energy Dialogue, White Papers and Reports

China's Sinopec announced last week that has agreed to buy a 30 percent stake in the Brazilian unit of Portugal's Galp for almost $5.2 billion, the latest in a series of Chinese companies' ventures into the Brazilian energy sector, Dow Jones reported. What role is the Asian country playing in the Brazilian energy sector, and how is it likely to develop? What strategies are guiding Chinese companies' investments? Is Brazil benefitting from these acquisitions? Will there likely to be pushback against such investments?

Go to article

The Bg News November 28, 2011, Bowling Green State University Nov 2011

The Bg News November 28, 2011, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. November 28, 2011. Volume 102-Issue 42.

Go to article

Dietary Fiber Consumption And Insulin Resistance: The Role Of Body Fat And Physical Activity, Charity B. Breneman Nov 2011

Dietary Fiber Consumption And Insulin Resistance: The Role Of Body Fat And Physical Activity, Charity B. Breneman

Theses and Dissertations

Background: This study was conducted to determine the association between fiber intake and insulin resistance in 264 women using a cross-sectional design. Methods: Insulin resistance was indexed using HOMA-IR (fasting insulin (μU/mL)×fasting glucose (mg/dL)/405). HOMA-IR values were log transformed. Fiber and energy consumption were assessed using 7-day weighed food records. Fiber was expressed as grams per 1000 kilocalories. Body fat percentage (BF%) was measured using the BOD POD and physical activity (PA) was ascertained using Actigraph accelerometers worn for 7 consecutive days. Results: (Mean±SD) age: 40.1±3.0 years, glucose: 86.7±5.9 mg/dL; insulin: 7.1±4.3 μU/mL; HOMA-IR: 1.5±1.0; fiber intake …

Go to article

Using Commodity Flow Data For Predicting Truck Freight Flow On State Truck Routes, Goangsung Jin Nov 2011

Using Commodity Flow Data For Predicting Truck Freight Flow On State Truck Routes, Goangsung Jin

Theses and Dissertations

The increase in truck traffic on highways has brought many problems and challenges to transportation planning and traffic operation, including traffic congestion, transportation system deficiency (insufficient truck parking, etc.), safety, infrastructure deterioration, environmental impacts (air quality and noise), economic development, and so forth. Along with the increase in truck traffic, the need for developing a statewide truck freight demand model has grown so that a state can estimate truck traffic at any point on its highways. The most significant hurdle to including freight transportation in the transportation modeling process is that most of the demand forecasting methodologies currently available were …

Go to article

Brief Introduction Of Organic Electrochemistry, Huan Wang, Jia-Xing Lu Nov 2011

Brief Introduction Of Organic Electrochemistry, Huan Wang, Jia-Xing Lu

Journal of Electrochemistry

Organic electrochemistry is a very useful tool for organic synthesis, not only because of the selective introduction or removal of electrons from organic molecules, but also for its green process. In this paper, electroorganic synthesis has been introduced from the systems, research methods and technologies to the characterization. Most of organic compounds could be electrochemically oxidized or reduced. Here, taking C=C compounds as an example, several kinds of electrochemical organic synthesis reactions are discussed, such as electrochemical addition, electrocatalytic dimrization, electropolymerization, etc. Electroorganic synthesis has been industrialized since 1960s. In this paper, electrosynthesis of adiponitrile was used as an example …

Go to article

Corrosion Behaviors Of 316 Stainless Steel Weldment Studied By Array Reference Electrodes, Wang-Huo Yang, Rong-Gang Hu, Chen-Qing Ye, Wei Hang, Ning Li, Chang-Jian Lin Nov 2011

Corrosion Behaviors Of 316 Stainless Steel Weldment Studied By Array Reference Electrodes, Wang-Huo Yang, Rong-Gang Hu, Chen-Qing Ye, Wei Hang, Ning Li, Chang-Jian Lin

Journal of Electrochemistry

The array reference electrodes were developed to in situ measure the potential distributions of the welded 316 stainless steel in 12% FeCl3 solution, combined with metallographic analysis, polarization curve, EIS measurement and Kelvin volta potential imaging. It was indicated that the weld zone of metal suffered a serious preferential corrosion when immersed in the environment due to the distinct changes of structure and composition during the welding process. With time prolonging, the corrosion potential of the welding zone was negatively shifted to a maximum value, and then declined gradually. At 45 min immersion, the corrosion development from welding zone to …

Go to article

Electroless Plating Silver Without Pd Activation On Polyamide Fabrics And Its Properties, Yun Meng, Ya-Ping Zhao, Zai-Sheng Cai Nov 2011

Electroless Plating Silver Without Pd Activation On Polyamide Fabrics And Its Properties, Yun Meng, Ya-Ping Zhao, Zai-Sheng Cai

Journal of Electrochemistry

Silver was deposited on the surface of polyaniline coated polyamide fabrics by electroless plating without using conventional palladium chloride solution as activator．Effects of electroless plating conditions such as the concentrations of silver nitrate, reducing agent glucose, complexing agent ammonium hydroxide, sodium hydroxide in the bath, as well as the depositing time and bath temperature on the rate of metal deposition and the square resistance were studied. Optimum electroless plating conditions were: 30℃, 50 min, with silver nitrate 12 g/L, ammonium hydroxide 100 ml/L, glucose 2.8 g/L, sodium hydroxide 8 g/L. Meanwhile, effects of the intermediate polyaniline layer on the metal …

Go to article

Electrocatalytic Determination Of 15 Kinds Of Phenolic Compounds By Novel Gold Nanoparticles-Modified Glassy Carbon Electrode, Yan-Ping Cui, Wei-Xing Wang, Chang-Zhu Yang, Wen-Hong Pu Nov 2011

Electrocatalytic Determination Of 15 Kinds Of Phenolic Compounds By Novel Gold Nanoparticles-Modified Glassy Carbon Electrode, Yan-Ping Cui, Wei-Xing Wang, Chang-Zhu Yang, Wen-Hong Pu

Journal of Electrochemistry

A gold nanoparticles modified glassy carbon electrode (Au/GCE) was used to detect 15 kinds of phenolic compounds. In the cyclic voltammetry measurements, the peak currents of phenolic compounds at Au/GCE were all increased as compared with GCE and planar gold electrodes, and the oxidation potentials were determined by the activity of analytes. Besides, electrocatalysis of salicylic acid was studied at Au/GCE. The results showed that, there was a good linear relationship between the oxidation current and the concentration of salicylic acid, and the current sensitivity was 1.8 fold higher than that obtained on GCE. Trace phenolic compounds determination could be …

Go to article

Preparation And Characterization Of Casno3 Anode Material For Lithium Ion Batteries, Ran Sun, Zi-Geng Liu, Ya-Qi Jiang Nov 2011

Preparation And Characterization Of Casno3 Anode Material For Lithium Ion Batteries, Ran Sun, Zi-Geng Liu, Ya-Qi Jiang

Journal of Electrochemistry

In this study the precursor CaSn(OH)6 was prepared via a hydrothermal process, and its composition, surface feature and phase-transition were characterized by XRD, SEM and DSC-TGA. The shapes of CaSn(OH)6 crystals were effectively controlled by adjusting the volumn ratio of H2O and CH3CH2OH solvents. Perovskite CaSnO3 could be obtained by calcination of CaSn(OH)6 at 800 ℃. The reversible capacity of 334.4 mAh/g with good cycling stability could be achieved with the CaSnO3 electrode.

Go to article

Preparation And Characterization Of The Lani0.6Fe0.4O3-δ Cathode For Intermediate Temperature Solid Oxide Fuel Cell, Hang Liu, Bo Huang, Xin-Jian Zhu Nov 2011

Preparation And Characterization Of The Lani0.6Fe0.4O3-δ Cathode For Intermediate Temperature Solid Oxide Fuel Cell, Hang Liu, Bo Huang, Xin-Jian Zhu

Journal of Electrochemistry

The LaNi0.6Fe0.4O3-δ as cathode material for intermediate temperature solid oxide fuel cell was prepared using a combustion synthesis technique. The X-ray diffraction (XRD) pattern showed that the single-phase LaNi0.6Fe0.4O3-δ perovskite could be obtained after heat treatment at 600°C. The TEM and SEM images of the synthesized powders revealed that the grains were 50-100nm. According to the electrochemical impedance spectra (EIS), the polarization resistance of the symmetric cell LaNi0.6Fe0.4O3-δ/ScSZ/LaNi0.6Fe0.4O3-δ sintered at 1050°C was the smallest (0.70Ω·cm2, 0.27Ω·cm2 …

Go to article

Preparation And Application Of Macroporous Ato/Sio2 Electrode In Electrochemical Degradation Of 4-Chlorophenol, Zhang-Lin Chai, Rui-Feng Zhang, Tong-Hu Xiao, Yun-Xiao Liang Nov 2011

Preparation And Application Of Macroporous Ato/Sio2 Electrode In Electrochemical Degradation Of 4-Chlorophenol, Zhang-Lin Chai, Rui-Feng Zhang, Tong-Hu Xiao, Yun-Xiao Liang

Journal of Electrochemistry

The macroporous ATO/SiO2 materials were prepared through multiple steps of hydrolysis deposition in ethylene glycol and acetonitrile mixed solutions of SnCl2/SbCl3 and subsequent calcination at high temperature. The structures of the obtained materials were characterized by means of SEM and XRD. The results showed that the nano-ATO chemically deposited on the SiO2 support underwent well-controlled aggregation and recrystallization to form a sandwich structure (ATO-SiO2-ATO). Through four times loading of ATO the volume resistivity and the specific surface area reached 10·cm and 77 m2·g-1, respectively. The oxygen evolution potential on …

Go to article

Dynamic Modeling And Characteristic Analysis Of Proton Exchange Membrane Fuel Cell, Qiu-Hong Jia, Ming Han, Bin Deng, Cai-Zhi Zhang Nov 2011

Dynamic Modeling And Characteristic Analysis Of Proton Exchange Membrane Fuel Cell, Qiu-Hong Jia, Ming Han, Bin Deng, Cai-Zhi Zhang

Journal of Electrochemistry

In this paper, a dynamic model of PEMFC is developed to estimate the dynamic performance of PEMFC by analyzing in detail the influence factors of voltage of PEMFC including various losses. The partial pressure of hydrogen and oxygen is obtained using the differential form of the ideal-gas equation in this model. The steady-state model is obtained by setting reasonable parameter values. The simulation results and experimental results have good consistency, which shows that the simulation model is correct, reasonable and effective. It analyzed the dynamic response characteristics of the output voltage and the partial pressure of hydrogen in condition of …

Go to article

Indirect Electrochemical Reduction And Cotton Dyeing Process In Fe(Ⅲ)-Oxalate-Calcium Gluconate System, Qing-Zhi Wang, Wei Wang Nov 2011

Indirect Electrochemical Reduction And Cotton Dyeing Process In Fe(Ⅲ)-Oxalate-Calcium Gluconate System, Qing-Zhi Wang, Wei Wang

Journal of Electrochemistry

The electrochemical behavior and possible reaction mechanism in Fe(Ⅲ)-oxalate-calcium gluconate system were studied by cyclic voltammetry. The results showed that Fe(Ⅱ)-gluconate was the final reductant. The reduction time, the working voltage and the cathode area influenced the current efficiency. The high current efficiency of 89% for the indirect electrochemical reduction of Vat Scarlet R could be achieved with reduction time of 10 min, working voltage of 4 V and cathode area of 40 cm2 in Fe(Ⅲ)-oxalate-calcium gluconate system.

Go to article

Electrochemical Behaviors Of Hydroquinone On Polypyrrole/Stab-Nammt/Gc Electrode, Rong Li, Jian Xiong, Wei-Qiong Zhu, Yuan-Yuan Han, Jin Xu, Xiao-Ying He Nov 2011

Electrochemical Behaviors Of Hydroquinone On Polypyrrole/Stab-Nammt/Gc Electrode, Rong Li, Jian Xiong, Wei-Qiong Zhu, Yuan-Yuan Han, Jin Xu, Xiao-Ying He

Journal of Electrochemistry

The PPy/STAB-MMT/GC electrode was made using montmorillonite modified by STAB and polypyrrole (PPy). The electrochemical behaviors of hydroquinone on the PPy/STAB-MMT/GC electrode were researched by cyclic voltammetry and square wave stripping voltammetry (SWSV). The results showed that the electrode reaction occurred on the hydroquinone electrode was controlled by diffusion in PBS (pH=6.0). The number of electron transfer was equal to the number of protons (n=m=1) with the effective area of PPy/STAB-MMT/GC electrode Aeff=0.031 cm2. Under the optimized conditions, the linear response of peak current in SWSV with the concentration of hydroquinone in a range of 8.0×10-6~8.0×10 …

Go to article

The Decision-Making Process Of Finding Students With Significant Intellectual Disabilities Eligible For Participation In The Virginia Alternate Assessment Program, Karren Streagle Nov 2011

The Decision-Making Process Of Finding Students With Significant Intellectual Disabilities Eligible For Participation In The Virginia Alternate Assessment Program, Karren Streagle

Theses and Dissertations

The purpose of this study was to understand the decision-making process used by IEP teams and case managers for students with significant intellectual disabilities who participate in alternate assessments based on aligned academic achievement standards (AA-AAS). Semi-structured in-depth interviews were conducted with case managers for students participating in the Virginia Alternate Assessment Program (VAAP) from school divisions in central Virginia. Traditional inductive data analysis techniques were used to analyze data collected from the in-depth interviews, the researcher’s reflexive field notes and observations, and a review of VAAP training and guidance documents provided by study participants. Findings illuminated the decision-making process …

Go to article

Comparing The Efficacy Of Two Cognitive Dissonance Interventions For Eating Pathology: Are Online And Face-To-Face Interventions Equally Effective?, Kasey Serdar Nov 2011

Comparing The Efficacy Of Two Cognitive Dissonance Interventions For Eating Pathology: Are Online And Face-To-Face Interventions Equally Effective?, Kasey Serdar

Theses and Dissertations

Clinical and subclinical eating pathology are common, especially among female undergraduates. Such problems are often chronic and associated with a range of negative medical and psychological outcomes. Thus, it is important to develop effective prevention programs to reduce eating disorder risk. Numerous studies suggest that dissonance-based prevention programs are the most successful in reducing eating disorder risk factors, however, such programs might not be convenient for students limited by scheduling restraints or geographic proximity. Further, some students may be reluctant to attend such groups due to lack of anonymity. One way to address these potential barriers is to adapt dissonance-based …

Go to article

Use Of Historic Tax Credits For School Construction In Virginia: Costs, Benefits, Administrative Implications, And Public Policy Issues, Paola Brooks Nov 2011

Use Of Historic Tax Credits For School Construction In Virginia: Costs, Benefits, Administrative Implications, And Public Policy Issues, Paola Brooks

Theses and Dissertations

A number of studies show that school facilities in the United States are deteriorating and that a substantial outlay of financial capital is required to bring school facilities to good overall condition. The current economic environment, marked by slow growth, high unemployment, and low tax revenues has highlighted widespread issues with the financial condition and fiscal sustainability of local governments. While studies show that the success of the educational process is related to the condition of school facilities, providing a safe and effective educational environment for students and teachers is a great challenge for local governments. Alternative sources of funding …

Go to article

Macias V. Club, Inc. Respondent's Brief Dckt. 38598 Nov 2011

Macias V. Club, Inc. Respondent's Brief Dckt. 38598

Not Reported

No abstract provided.

Go to article

State V. Wilkins Respondent's Brief Dckt. 38117 Nov 2011

State V. Wilkins Respondent's Brief Dckt. 38117

Not Reported

No abstract provided.

Go to article

State V. Clayton Respondent's Brief Dckt. 38324 Nov 2011

State V. Clayton Respondent's Brief Dckt. 38324

Not Reported

No abstract provided.

Go to article

State V. Whitman Appellant's Brief Dckt. 38446 Nov 2011

State V. Whitman Appellant's Brief Dckt. 38446

Not Reported

No abstract provided.

Go to article

First Prev Next Last