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

Digital Commons Network™

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

2017

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 271 - 300 of 61506

Full-Text Articles in Entire DC Network

School-Based Oral Health Promotion And Intervention In Amiga (Alfonso, Mendez, Indang, General Emilio Aguinaldo, Amadeo) Cavite, Arlene Cecilia Alfaro Dec 2017

School-Based Oral Health Promotion And Intervention In Amiga (Alfonso, Mendez, Indang, General Emilio Aguinaldo, Amadeo) Cavite, Arlene Cecilia Alfaro

ASEAN Journal of Community Engagement

Dental caries affect 87.4% of Filipinos while 48.3% have periodontal disease. In most developing low-income countries like the Philippines, more than 90% of caries is untreated. Because of the evident disparities in health, high cost of healthcare, unaffordable and unavailable health service, there was a call for reorientation towards prevention on a mass scale by the World Health Organization. This pushed for oral health promotion in schools. Schools give an ideal setting for introducing preventive measures for health with the objective of developing sustainable health promoting behavior change and long-term health outcome improvements. The dental interns from the University of …

Go to article

State V. Beyer Appellant's Brief Dckt. 45036 Dec 2017

State V. Beyer Appellant's Brief Dckt. 45036

Not Reported

No abstract provided.

Go to article

Colorado's First Judicial District: A Continued Push To Aid Domestic Violence Victims, Austin Jensen Dec 2017

Colorado's First Judicial District: A Continued Push To Aid Domestic Violence Victims, Austin Jensen

Denver Law Review Forum

No abstract provided.

Go to article

An Additional Pulsating Mode (7.35 Mhz) And Pulsations Timing Variations Of Pg 1613+426, Tomomi Otani, Terry D. Oswalt, Patrice Majewski, Riley Jordan, Marc Amaral, Adam Moss Dec 2017

An Additional Pulsating Mode (7.35 Mhz) And Pulsations Timing Variations Of Pg 1613+426, Tomomi Otani, Terry D. Oswalt, Patrice Majewski, Riley Jordan, Marc Amaral, Adam Moss

Publications

We present the detection of an additional pulsation mode (7.35 mHz) of a subdwarf B star, PG 1613+426, and periodic Observed minus Calculated (O-C) variations for two existing pulsations. PG 1613+426 is near the hot end of the sdB instability strip. One pulsation mode (6.94 mHz) was detected so far by Bonanno et al. (2002) and another pulsation mode candidate (7.05 mHz) was proposed with a confidence level above 90% by Kuassivi and Ferlet (2005). To constrain sdB star evolutional scenarios, this star was monitored in 2010, 2011, 2015, and 2017 as a part of a project for finding companions …

Go to article

School District Consolidation Policies: Endogenous Cost Inefficiency And Saving Reversals, Mustafa U. Karakaplan, Levent Kutlu Dec 2017

School District Consolidation Policies: Endogenous Cost Inefficiency And Saving Reversals, Mustafa U. Karakaplan, Levent Kutlu

School of Economics and Finance Faculty Publications

Some education policy studies suggest that consolidation of public school districts saves resources. However, endogeneity in cost models would result in incorrect estimates of the effects of consolidation. We use a new stochastic frontier methodology to examine district expenditures while handling endogeneity. Using the data from California, we find that the effects of student achievement and education market concentration on expenditure per pupil are substantially larger when endogeneity is handled. Our findings are robust to concerns such as instrumental variable adequacy and spatial interactions. Our consolidation simulations indicate that failure to address endogeneity can result in unrealistic expectations of savings.

Go to article

Inequality In Education: Experience Of Eritical Pedagogy And Community Engagement With Orang Sungai In Paitan, Sabah, Mohd. Suhamimi Mohamad, Manisah Mohd. Ali Dec 2017

Inequality In Education: Experience Of Eritical Pedagogy And Community Engagement With Orang Sungai In Paitan, Sabah, Mohd. Suhamimi Mohamad, Manisah Mohd. Ali

ASEAN Journal of Community Engagement

The level of literacy among rural communities is still relatively low in Malaysia even though the overall country’s literacy rate is considerably high. Literacy rates among indigenous people are lowest in remote community especially in Sabah and Sarawak. Reasons include low literacy of the parents and poor school attendance. Initiatives for the indigenous community like the Accelerated Literacy Program attempts to bring literacy to a similar level to that of their non-indigenous peers. This study aims to develop and implement a community engagement project through the Literacy Advocacy Program among Orang Sungai who dwells in remote area in Sabah. This …

Go to article

Communities' Initiatives In Addressing Hunger In Relocation Sites In Cebu, Philippines, Anecito Anuada, Carla Melodillar Dec 2017

Communities' Initiatives In Addressing Hunger In Relocation Sites In Cebu, Philippines, Anecito Anuada, Carla Melodillar

ASEAN Journal of Community Engagement

Two villages in Cebu City, represented by 22 farmer-scientists, chose to conduct the third phase of their Urban Vegetable-Gardening Project in two relocation sites in the municipality of Bogo City to help displaced fisher folks affected by Typhoon Haiyan in 2013. The study aimed to determine the results of the project in addressing the eminent hunger in the relocation sites; and discuss the effects of communities’ initiatives in assisting fellow communities. The operation of the project emphasized collaboration between institutions, and communities’ involvement in decision-making and activities – all boils down to community engagement (Attree et al., 2011; Holland and …

Go to article

Improving Wayfinding And Signage Systems Of The Ragunan Zoo As A Way To Enhance Visitors’ Quality Time, Yulia Nurliani Lukito, Enira Arvanda Dec 2017

Improving Wayfinding And Signage Systems Of The Ragunan Zoo As A Way To Enhance Visitors’ Quality Time, Yulia Nurliani Lukito, Enira Arvanda

ASEAN Journal of Community Engagement

Ragunan zoo is the biggest zoo in Jakarta that becomes one of the most favorite recreation areas during holidays. Unfortunately, the existing signage in the zoo does not provide simple wayfinding and good signage systems that resulted in the confusion of visitors in exploring the zoo. Beside recreation, zoo also functions as, educational and conservational areas. Confusing wayfinding and signage make visitors have less time to enjoy the exhibits and reduce visitors’ motivation to fulfill the education and conservation goals. This paper analyzes existing wayfinding and signage systems at the Ragunan Zoo and proposes a more comprehensive system by using …

Go to article

Factors Influencing Household Income In Poor Urban Slum Settlements In Bangladesh, S Rahman Dec 2017

Factors Influencing Household Income In Poor Urban Slum Settlements In Bangladesh, S Rahman

School of Geography, Earth and Environmental Sciences

The paper examines the influence of socio-economic factors on monthly total household income in poor urban slum settlements in four secondary cities of Bangladesh (i.e., Tongi, Jessore, Mymensingh and Dinajpur) based on a census survey of 33,049 households using a Tobit model. Results reveal that all levels of education, public sector employment, business, self-employment, homestead land ownership, family size, female occupation and urban agriculture significantly increases income whereas households with female heads, unemployed heads and children under 5 earn significantly less income. Migrant households do not earn significantly less than the local residents. Geographical variation exist as income is significantly …

Go to article

Improving Learning And Confidence Through Small Group, Structured Otoscopy Teaching: A Prospective Interventional Study, Peng You, Saad Chahine, Murad Husein Dec 2017

Improving Learning And Confidence Through Small Group, Structured Otoscopy Teaching: A Prospective Interventional Study, Peng You, Saad Chahine, Murad Husein

Paediatrics Publications

Background: Otologic diseases are common and associated with significant health care costs. While accurate diagnosis relies on physical exam, existing studies have highlighted a lack of comfort among trainees with regards to otoscopy. As such, dedicated otoscopy teaching time was incorporated into the undergraduate medical curriculum in the form of a small group teaching session. In this study, we aimed to examine the effect of a small-group, structured teaching session on medical students' confidence with and learning of otoscopic examination. Methods: Using a prospective study design, an otolaryngologist delivered an one-hour, small group workshop to medical learners. The workshop included …

Go to article

Magnetocrystalline Anisotropy Of "-Fe2o3, Imran Ahamed, Rohilt Pathak, Arti Kashyap Dec 2017

Magnetocrystalline Anisotropy Of "-Fe2o3, Imran Ahamed, Rohilt Pathak, Arti Kashyap

Nebraska Center for Materials and Nanoscience: Faculty Publications

The epsilon Fe2O3 phase of iron oxide has been studied to understand the spin structure and the magnetocrystalline anisotropy in the bulk and in thin films of "-Fe2O3 and Co-doped "-Fe2O3. The preferential magnetization direction in the nanoparticles of "-Fe2O3 is along the a-axis [M. Gich et al., Chem. Mater. 18, 3889 (2006)]. Compared to the bulk band gap of 1.9 eV, the thin-film band gap is reduced to 1.3 eV in the Co-free films and to 0.7 eV in the film with partial …

Go to article

Um Students And Faculty Help Children Develop To Their Potential, Sarah Sapp Dec 2017

Um Students And Faculty Help Children Develop To Their Potential, Sarah Sapp

University of Mississippi News

Department of Communication Sciences and Disorders offers assessments and in-home services

Go to article

Kansas Trends And Changes In Temperature, Precipitation, Drought, And Frost-Free Days From The 1890s To 2015, X. Lin, J. Harrington, I. Ciampitti, P. Gowda, D. Brown, I. Kisekka Dec 2017

Kansas Trends And Changes In Temperature, Precipitation, Drought, And Frost-Free Days From The 1890s To 2015, X. Lin, J. Harrington, I. Ciampitti, P. Gowda, D. Brown, I. Kisekka

Journal of Contemporary Water Research and Education

Kansas extends 660 km from the moderate elevations and semi-humid conditions of the Lower Missouri Basin to the High Plains lying above the Ogallala Aquifer and along the Rockies’ eastern slope. Such characteristics result in significant climate variability across the state, making timely and accurate climate trend and change information valuable for water resources management and crop production. Here we used high-quality daily and monthly climate observations spanning a long-term period of 121 years (1895–2015) to assess trends and changes in air temperature, precipitation, drought, and frost-free days across Kansas. We show that a statewide average warming rate of 0.06°C …

Go to article

"The Devil Is In The Details:" Inland Northwest Stakeholders’ Views On Three Forest-Based Bioenergy Scenarios, Soren Newman, Darin Saul, Robert Keefe, Ryan Jacobson, Tamara Laninga, Jillian Moroney Dec 2017

"The Devil Is In The Details:" Inland Northwest Stakeholders’ Views On Three Forest-Based Bioenergy Scenarios, Soren Newman, Darin Saul, Robert Keefe, Ryan Jacobson, Tamara Laninga, Jillian Moroney

University Author Recognition Bibliography: 2017

Public and private initiatives are actively exploring a range of forest-based bioenergy development options in the Inland Northwest of the United States. These efforts are motivated in part by the potential to generate renewable energy while creating a market for forest residues that would facilitate hazardous fuels reduction and provide economic opportunities. Understanding stakeholders’ perspectives is critical to the feasibility and long-term viability of bioenergy projects. This study presents stakeholder perspectives on forest-based bioenergy development strategies for communities in the forested areas of Idaho, western Montana, eastern Washington, and eastern Oregon. We developed three scenarios based on bioenergy initiatives currently …

Go to article

The Weekly Challenger, December 28, 2017, The Weekly Challenger, Et Al Dec 2017

The Weekly Challenger, December 28, 2017, The Weekly Challenger, Et Al

Weekly Challenger Newspaper Collection

The December 28, 2017, issue of The Weekly Challenger.

Go to article

Study Of Ozone And Electron Beam Irradiation On Degradation Of Zearalenone And Ochratoxin A, Luo Xiaohu, Li Ke, Wang Ren, Xing Jiali, Wang Li, Du Zhihong, Pan Lihong, Sun Dongling, Li Yanan, Chen Zhengxing Dec 2017

Study Of Ozone And Electron Beam Irradiation On Degradation Of Zearalenone And Ochratoxin A, Luo Xiaohu, Li Ke, Wang Ren, Xing Jiali, Wang Li, Du Zhihong, Pan Lihong, Sun Dongling, Li Yanan, Chen Zhengxing

Food and Machinery

Mycotoxin contamination caused by Zearalenone (ZEN) and Ochratoxin A (OTA) is widespread for being prone to happen and hard to degrade. In this paper, the effects of ozone and electron beam irradiation (EBI) on the degradation of Zearalenone and Ochratoxin A were investigated. After 10 s of 2.0 mg/L ozone treatment, the ZEN content decreased from 50 μg/mL to concentration undetectable. After 12 kGy of EBI, the degradation rate of ZEN was up to 86% and concentration of ZEN within 0.5～5.0 μg/mL had no significant different (P＜0.05), with the degradation of ZEN being faster in acetonitrile than methanol. After 30 …

Go to article

Research On Prediction Model Of Egg Freshness Based On Image Processing, Liu Yingying, Zhong Nan Dec 2017

Research On Prediction Model Of Egg Freshness Based On Image Processing, Liu Yingying, Zhong Nan

Food and Machinery

Egg freshness is an important index to measure the economic quality of eggs, and 98 eggs’ image information of different storage time were collected. In the meantime, the conventional index, includes the weight, the height of protein and chamber of the egg which reflects the egg freshness were measured. To receive a method of nondestructive examination, using MATLAB image processing toolbox as a research tool to measure the area ratio of egg yolk, chamber height and length of the whole egg size. Analyzing the regression model between weight and chamber height, whole egg’s major-minor axis, the regression model between protein …

Go to article

A Review Of The Development In Pretreatment Methods For Pcr Detection Of Food-Borne Pathogens, Bai Yalong, Suo Yujuan, Zhou Changyan Dec 2017

A Review Of The Development In Pretreatment Methods For Pcr Detection Of Food-Borne Pathogens, Bai Yalong, Suo Yujuan, Zhou Changyan

Food and Machinery

Molecular detection methods based on PCR (polymerase chain reaction) are widely used in the rapid detection of food-borne pathogens. However, in practical applications pretreatment method is also a critical step in rapid detection except the optimization of PCR. In this review, the pretreatment methods (including the centrifugation, membrane filtration, magnetic separation) for PCR detection of food-borne pathogens were systematically summeried. In particular, the magnetic separation was emphatically reviewed in the PCR detection of food-borne pathogens.

Go to article

Electroactivities Of Pd/Fe3O4-C Catalysts For Electro-Oxidation Of Methanol, Ethanol And Propanol, Tao Zou, Qing-Feng Yi, Yuan-Yuan Zhang, Xiao-Ping Liu, Guo-Rong Xu, Hui-Dong Nie, Xiu-Lin Zhou Dec 2017

Electroactivities Of Pd/Fe3O4-C Catalysts For Electro-Oxidation Of Methanol, Ethanol And Propanol, Tao Zou, Qing-Feng Yi, Yuan-Yuan Zhang, Xiao-Ping Liu, Guo-Rong Xu, Hui-Dong Nie, Xiu-Lin Zhou

Journal of Electrochemistry

Development of palladium (Pd) catalysts with high electroactivity for alcohol oxidation is significant for alcohol fuel cells. In this work, Pd nanoparticles were formed by sodium borohydride (NaBH4) reduction method and subsequently deposited on the surface of carbon supported ferriferrous oxide (Fe3O4/C) composites to obtain the Pd/Fe3O4-C catalysts with different Fe3O4 loadings. Their transmission electron microscopic (TEM) images show that the Pd nanoparticles were uniformly dispersed on the Fe3O4/C. Electroactivities of the prepared Pd/Fe3O4-C catalysts toward oxidations of C1-C3 …

Go to article

Black Hole Hyperaccretion Inflow-Outflow Model. I. Long And Ultra-Long Gamma-Ray Bursts, Tong Liu, Cui-Ying Song, Bing Zhang, Wei-Min Gu, Alexander Heger Dec 2017

Black Hole Hyperaccretion Inflow-Outflow Model. I. Long And Ultra-Long Gamma-Ray Bursts, Tong Liu, Cui-Ying Song, Bing Zhang, Wei-Min Gu, Alexander Heger

Physics & Astronomy Faculty Research

Long-duration gamma-ray bursts (LGRBs) and ultra-LGRBs (ULGRBs) originate from collapsars, in the center of which a newborn rotating stellar-mass black hole (BH) surrounded by a massive accretion disk may form. In the scenario of the BH hyperaccretion inflow-outflow model and Blandford-Znajek (BZ) mechanism to trigger gamma-ray bursts (GRBs), the real accretion rate to power a BZ jet is far lower than the mass supply rate from the progenitor star. The characteristics of the progenitor stars can be constrained by GRB luminosity observations, and the results exceed usual expectations. LGRBs lasting from several seconds to tens of seconds in the rest …

Go to article

Measurement Of The Helicity Asymmetry E In Ω → Π+Π−Π0 Photoproduction, Z. Akbar, P. Roy, S. Park, V. Crede, A. V. Anisovich, I. Denisenko, E. Klempt, V. A. Nikonov, A. V. Sarantsev, K. P. Adhikari, S. Adhikari, M. J. Amaryan, S. Anefalos Pereira, H. Avakian, J. Ball, M. Battaglieri, V. Batourine, I. Bedlinskiy, S. Boiarinov, W. J. Briscoe, J. Brock, W. K. Brooks, V. D. Burkert, F. T. Cao, C. Carlin, D. S. Carman, A. Celentano, G. Charles, T. Chetry, G. Ciullo, Wesley P. Gohn Dec 2017

Measurement Of The Helicity Asymmetry E In Ω → Π+Π−Π0 Photoproduction, Z. Akbar, P. Roy, S. Park, V. Crede, A. V. Anisovich, I. Denisenko, E. Klempt, V. A. Nikonov, A. V. Sarantsev, K. P. Adhikari, S. Adhikari, M. J. Amaryan, S. Anefalos Pereira, H. Avakian, J. Ball, M. Battaglieri, V. Batourine, I. Bedlinskiy, S. Boiarinov, W. J. Briscoe, J. Brock, W. K. Brooks, V. D. Burkert, F. T. Cao, C. Carlin, D. S. Carman, A. Celentano, G. Charles, T. Chetry, G. Ciullo, Wesley P. Gohn

Physics and Astronomy Faculty Publications

The double-polarization observable E was studied for the reaction γp → pω using the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B at the Thomas Jefferson National Accelerator Facility and the longitudinally polarized frozen-spin target (FROST). The observable was measured from the charged decay mode of the meson, ω → π+π−π0, using a circularly polarized tagged-photon beam with energies ranging from the ω threshold at 1.1 to 2.3 GeV. A partial-wave analysis within the Bonn-Gatchina framework found dominant contributions from the 3/2+ partial wave near threshold, which is identified with the subthreshold N …

Go to article

Cobalt-Based Nitrogen-Doped Carbon Non-Noble Metal Catalysts For Oxygen Reduction Reaction, Meng-Xiu Jiang, Jing Zhang, Yue-Hua Li, Rong Zhang Dec 2017

Cobalt-Based Nitrogen-Doped Carbon Non-Noble Metal Catalysts For Oxygen Reduction Reaction, Meng-Xiu Jiang, Jing Zhang, Yue-Hua Li, Rong Zhang

Journal of Electrochemistry

Transition metal-nitrogen co-doped carbon catalysts have attracted significant attention because of their reasonable activity and remarkable selectivity toward oxygen reduction reaction (ORR) as cathodic reaction in fuel cells. However, the role of transition metal in the active sites of the catalysts still is uncertain. In this work, the Cox-Ny/C-T catalysts were prepared with BP2000 as a carbon source, urea (Ur) as a nitrogen source and Co(OAc)2•4H2O as a metal precursor by a simple chemical method. Meanwhile, in order to optimize the ORR activity, the catalysts were synthesized with different amounts of Co …

Go to article

Deep Learning Architectures For Multi-Label Classification Of Intelligent Health Risk Prediction, Andrew Maxwell, Runzhi Li, Bei Yang, Heng Weng, Aihua Ou, Huixiao Hong, Zhaoxian Zhou, Ping Gong, Chaoyang Zhang Dec 2017

Deep Learning Architectures For Multi-Label Classification Of Intelligent Health Risk Prediction, Andrew Maxwell, Runzhi Li, Bei Yang, Heng Weng, Aihua Ou, Huixiao Hong, Zhaoxian Zhou, Ping Gong, Chaoyang Zhang

Faculty Publications

No abstract provided.

Go to article

Core-Shell Pd@Pt Ultrathin Nanowires As Durable Oxygen Reduction Electrocatalysts, Xin Wang, Yun-Jie Xiong, Liang-Liang Zou, Qing-Hong Huang, Zhi-Qing Zou, Hui Yang Dec 2017

Core-Shell Pd@Pt Ultrathin Nanowires As Durable Oxygen Reduction Electrocatalysts, Xin Wang, Yun-Jie Xiong, Liang-Liang Zou, Qing-Hong Huang, Zhi-Qing Zou, Hui Yang

Journal of Electrochemistry

This paper describes a simple CO-assisted reduction approach for the controllable synthesis of ultrathin Pd nanowires along the one-dimensional (1D) direction. Ultrathin Pt films from one to several atomic layers were successfully decorated onto ultrathin Pd nanowires by utilizing Cu UPD deposition, and followed by in-situ redox replacement reaction of UPD Cu by Pt. The core–shell structure and composition of the Pd@Pt ultrathin nanowires have been verified using transmission electron microscopy and energy dispersive X-ray spectrometry. The core–shell Pd@Pt ultrathin nanowires exhibited comparative electrocatalytic activity and improved durability for the oxygen reduction reaction in comparison with commercial Pt black. The …

Go to article

Effect Of Allyl Thiourea On Nickel Electrodeposition From Solution Containing Ammonia And Chloride, Ya-Ning He, Liang Yuan, Zhi-Ying Ding, Shi-Jun Liu Dec 2017

Effect Of Allyl Thiourea On Nickel Electrodeposition From Solution Containing Ammonia And Chloride, Ya-Ning He, Liang Yuan, Zhi-Ying Ding, Shi-Jun Liu

Journal of Electrochemistry

The effects of allylthiourea (ATU) concentration on the cathodic polarization behaviour, nucleation and surface morphology of nickel electrodeposited on the glassy carbon electrode from ammonia-ammonium chloride-water (NH3-NH4Cl-H2O) solutions were investigated by cyclic voltammogry, cathodic polarization and current transient methods. The results revealed that the addition of ATU inhibited nickel deposition, which was enhanced with an increase in ATU concentration from 5 to 50 mg•L-1. The initial deposition kinetics corresponded to a model including instantaneous nucleation and diffusion controlled growth. In the presence of ATU, the initial nucleation of nickel electrocrystallisation remained unchanged. …

Go to article

Effects Of Jet Milling And Classifying Process On The Performance Of Lifepo4/C In Full Batteries, Xing-Liang Liu, Mao-Ping Yang, Wei-Wei Wang, Yong Cao Dec 2017

Effects Of Jet Milling And Classifying Process On The Performance Of Lifepo4/C In Full Batteries, Xing-Liang Liu, Mao-Ping Yang, Wei-Wei Wang, Yong Cao

Journal of Electrochemistry

The carbon coated lithium iron phosphate (LiFePO4/C) composite cathode material was prepared by using iron phosphate process. The effects of jet milling and classifying process on the electrochemical performance of LiFePO4/C cathode material in full batteries were investigted. Scanning electron microscopic analyses suggested that the globose secondary particles were crustily crushed during the jet milling and classifying process, which would further result in lower tap density and carbon content. The LiFeP4/C composite cathode materials with different physical characteristics were further tested in full batteries to evaluate the electrochemical properties. The results showed no obvious …

Go to article

Engineering The Electrochemical Capacitive Properties Of Activated Carbon By Correct Selection Of Ionic-Liquid Electrolytes, Qiu-Hong Zhang, Bao-Shou Shen, Song-Lin Zuo, Xin-Yu Wei Dec 2017

Engineering The Electrochemical Capacitive Properties Of Activated Carbon By Correct Selection Of Ionic-Liquid Electrolytes, Qiu-Hong Zhang, Bao-Shou Shen, Song-Lin Zuo, Xin-Yu Wei

Journal of Electrochemistry

In order to improve the electrochemical capacitive properties and to apply coconut shell activated carbon (AC) serving as electrode materials in ionic liquid (IL)-based supercapacitor (SC), the coconut shell AC material was re-activated using a steam as an activating agent in this work, forming a secondary AC (W-AC). The results showed that the specific capacitance of the W-AC electrode was much larger than that of the raw activated carbon electrode (R-AC) in 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM]BF4). The electrochemical techniques including cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) measurement, and electrochemical impedance spectroscopy (EIS) were used to systematically study the capacitive …

Go to article

Effect Of Fe2+/Fe3+Interconvertion On Reduction Behavior Of Fe3+ In Acidic Electrolytes, Jian-Xin Qin, Feng Lin, Wen-Ping Liu, Chao Chen, Meng-De Ren Dec 2017

Effect Of Fe2+/Fe3+Interconvertion On Reduction Behavior Of Fe3+ In Acidic Electrolytes, Jian-Xin Qin, Feng Lin, Wen-Ping Liu, Chao Chen, Meng-De Ren

Journal of Electrochemistry

The influences of ferrous/ferric (Fe2+/Fe3+) interconvertion on electrochemical reduction and electrode reaction of Fe3+ were investigated by using linear sweep voltammetry, potentiostatic method and cyclic voltammetry (CV) in acidic electrolytes containing chloride ion (Cl-) and sulfate ion (SO42-). It was shown that the reduction process of Fe3+/Fe2+ would take place in two independent stages: (1) the reduction of Fe3+ to Fe2+ at E=0.35V and (2) the co-precipitation of Fe2+ by forming Fe(OH)2 (E≤-0.3 V) instead of Fe. The major effect of Fe2+ …

Go to article

Effect Of Calcium On Atmospheric Corrosion Resistance Of Bridge Steel, Dong-Liang Li, Gui-Qin Fu, Miao-Yong Zhu Dec 2017

Effect Of Calcium On Atmospheric Corrosion Resistance Of Bridge Steel, Dong-Liang Li, Gui-Qin Fu, Miao-Yong Zhu

Journal of Electrochemistry

The corrosion behavior of bridge steel in simulated hot and humid industrial-marine atmosphere was investigated by mass loss analysis, XRD, SEM, electrochemical methods and a wet/dry alternate immersion corrosion test using 0.1 mol•L-1 NaCl+0.01 mol•L-1 NaHSO3 solutions. The corrosion depth (W) of experimental steels before and after calcium treatment versus time (t) curves showed a good agreement with the power function of W=Atn. The corrosion products were mainly composed of amorphous phase and a small amount of crystals including α-FeOOH, β-FeOOH, γ-FeOOH and Fe3O4. Trace calcium could promote the formation of …

Go to article

Understanding Climate-Hydrologic-Human Interactions To Guide Groundwater Model Development For Southern High Plains, Venkatesh Uddameri, Sreeram Singaraju, Abdullah Karim, Prasanna Gowda, Ryan Bailey, Meagan Schipanski Dec 2017

Understanding Climate-Hydrologic-Human Interactions To Guide Groundwater Model Development For Southern High Plains, Venkatesh Uddameri, Sreeram Singaraju, Abdullah Karim, Prasanna Gowda, Ryan Bailey, Meagan Schipanski

Journal of Contemporary Water Research and Education

The Ogallala Aquifer is the only reliable source of freshwater in the Southern High Plains (SHP) and is used extensively to build a strong agricultural economy with a significant impact on global food security. Groundwater models capable of simulating human-hydrologic-climate interactions are crucial to guide future water management and policy planning endeavors in this water stressed region. A well-defined conceptual model is a necessary first-step in that direction. Conceptual modeling should not be limited to compiling necessary datasets but must also focus on generating critical insights pertaining to human-climate-aquifer interactions especially when the emphasis is on guiding future policy. Model …

Go to article

First Prev Next Last