Digital Commons Network^™

Stm Investigation Of Oxygen Reduction Reaction On Solid Interface In Fuel Cell, Zhen-Feng Cai, Bing Sun, Wen-Jie Jiang, Ting Chen, Dong Wang, Li-Jun Wan

Journal of Electrochemistry

An electrocatalyst for oxygen reduction reaction (ORR) is an important component for fuel cells. An investigation at interfacial electrochemical reactions toward ORR at a molecular scale benefits mechanistic understanding as well as rational design of catalysts. Scanning tunneling microscopy (STM) has been proven to be a powerful tool to monitor chemical reactions and to provide in-situ information about the interfacial electrochemical reactions at a molecular level. This review summarizes the recent STM studies in monitoring the interface processes such as morphological changes, molecular changes, reaction intermediates, and oxidation products. The prospects of future development in this field are outlined.

Chitosan/Nonahydrate Gel Derived Fe-N-Doped Porous Carbon Sheet As High-Efficient Orr Electrocatalyst, Fan-Lu Meng, Xin-Bo Zhang, Jun-Min Yan

Journal of Electrochemistry

The chitosan/nonahydrate gel was used as a precursor to realize the uniform mixture of N-polymer and metal salt. After lyophilization treatment, the gel went through heat treatment and acid etch. Accordingly, the Fe-N-doped porous carbon sheet with homogenous composition and microstructure was prepared. Compared with the commercial Pt/C catalyst, the Fe-N-doped porous carbon sheet exhibited more positive onset potential and half-wave potential, higher current density, and especially, excellent durability. The power density of 318 mW·cm^-2 was obtained in alkaline fuel cell with the Fe-N-doped porous carbon sheet as a cathode catalyst, which is higher than 267 mW·cm^-2 with …

Synthesis Of Ultrathin Co3O4 Nanoflakes Film Material For Electrochemical Sensing, Hui-Juan Wang

Journal of Electrochemistry

Ultrathin cobalt oxide (Co₃O₄) nanoflakes film material was synthesized by using an electro-deposited cobalt layer as a raw material through a simple oxidation method and followed by a heat treatment at 350 ^oC. The physical characterizations of the Co₃O₄ nanoflakes film were performed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM) technologies, and the electrochemical activity was measured by cyclic voltammetry (CV). As a promising material for electrochemical sensing, the as-synthesized ultrathin Co₃O₄ nanoflakes film material exhibited excellent electrochemical activity for H₂O …

More Than Four Walls: The Psychology Of Home

DePaul Magazine

Joe Ferrari, professor of psychology and Vincent de Paul professor in DePaul's College of Science and Health, discusses his research to understand what "home" means to people, a nebulous, but important feeling we have. The psychology of home is an important new area study because of the millions of baby boomers heading into retirement in the United States who may be headed for life in nursing facilities and the 59.5 million displaced persons worldwide who will need assistance dealing with disruption and feelings of loss.

Research Of Volatile Components Of Lanzhou Fat-Tailed Sheep, Li Zhenzi, Yang Jutian, Qi Gaozhan, Zang Rongxin, Liu Hongna, Long Ling, Cao Xin

Food and Machinery

It was aimed to analyze the volatile components and key volatile components of Lanzhou fat-tailed sheep in different gender in this study, and the small fat-tail sheep were chosen as control. The results showed that Lanzhou fat-tailed wethers contained totally 80 kinds of volatile materials, while ewes had 85 kinds. Aldehydes were found the key volatile components, and the relative contents were respectively 31.110% and 22.305%. The key volatile components contained decanal, octanal, nonanal, 2, 4-nonadienal, 2-nonenal, 2,4-decadienal and (E)-2-decenal, which smelled like wax, fat, mushroom and cucumber, and wethers contained 2 more kinds aldehydes than ewes. Compared to small …

Orbital Hydatid Cyst: An Easier And Safer Removal Through Anterior Orbitotomy Approach, A Hadi Al Khalili

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Hydatid Cyst of the Orbit is a rare manifestation even in endemic areas. It presents as a silent proptosis with or without visual function impairment. Many surgical procedures have been implemented for cyst removal including transcranial, lateral orbitotomy, tansmaxillary sinus, rhinotomy, and anterior orbitotomy. Post-operative complications endangering visual function and locally were reported with some of these approaches. A new simple, easy, and quick procedure was improvised with no significant complications. The procedure is described in details. .

Outcome Of Levator Advancement Procedure For Treatment Of Congenital Blepharoptosis, Sabir O. Mustafa, Zakaria Y. Arajy, Nuas Hasab Jaafar

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Eyelid Ptosis is classified according to etiology as congenital or acquired, simple congenital ptosis is the most common form characterized by fatty dystrophy and fibrosis of the levator muscle which leads to a restricted elevation in upgaze and a lid lag in downgaze. The choice of operation depends on the grade of ptosis and the levator function. OBJECTIVE: To evaluate the effectiveness of levator advancement technique for treatment of congenital blepharoptosis. PATIENTS AND METHODS: A prospective study done in Surgical Specialities Hospital-Medical City and Rizgary Teaching Hospital between June 2012 -June 2016; levator advancement technique was applied for …

Surgically Treated Ankle Fracture, Danis – Weber Type C: A Short Term Functional Outcome, Wissam Khaidhyer Baidi, Ali Bakir Al-Hilli

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Fractures of the ankle are fairly common injuries. Large comparative studies that have evaluated long-term functional outcome of operatively treated ankle fractures are lacking. OBJECTIVE: This study is performed to analyse the functional outcome of gender, weight and age of patient with Weber C in the early follow up time. PATIENTS AND METHODS: This retrospective review of 18 patients (13 males and 5 females), age ranges between 19-78 years (average 38.9 years) with Weber type C ankle injury that were treated by open reduction and internal fixation in Medical city Complex from October 2013 to February 2014. All …

Dynamic Hip Screw Versus Proximal Femoral Nail In The Treatment Of Stable Intertrochanteric Fractures, Mohammed Hatem Salal

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Intertrochanteric fracture is a common injury among older age group , it occupy a high percentage of fragility fractures admitted to the casualty department , lots of methods have been used over decades. Dynamic hip screw (DHS) was the gold standard technique since its invention, however after introduction of the proximal femoral nail (PFN) to the markets in the 90s, this represented a major turning point in the management of intertrochanteric fracture especially the unstable ones. OBJECTIVE: To compare the results of DHS versus PFN in the management of stable intertrochanteric fractures. PATIENTS AND METHODS: Prospective study included …

Saving Versus None Saving Of Anterior Cruciate Ligament Remnant In Arthroscopically Assisted Anterior Cruciate Ligament Reconstruction(Aclr), Majed Aswad Jasem Alsaad

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Anterior Cruciate Ligament injury is one of the most common injuries of the knee and reconstruction is a commonly done surgical procedure. Successful outcome depend on factors that affects the stability like anatomic graft placement and secure fixation and other factors that affects the proprioception and revascularization of the graft like preservation of the ACL remnant which is used to reduce repeated graft rupture. OBJECTIVE: To compare the effect of saving of ACL remnant versus none saving on functional outcome and stability of the knee joint postoperatively. PATIENTSANDMETHODS: A prospective comparative non randomized study was used on 30 …

Variability Of Vertical And Horizontal Facial Measurements Among The Population Of Basrah, Zuhair F Fathallah, Nada H Al-Jassim, Nawal M Abdullah

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Anthropometry is the systematic quantitative representation of the human body, it is used to measure the absolute and relative variability in size and shape of the human body. Scientists were studying this knowledge in medicine for both diagnosis and treatment. The people of Basrah are a mixture of Semites, Arian, and there are the mixed group result from interracial marriages. OBJECTIVE: To quantitatively measure the human face in different ethnic groups of local population and to identify the differences between individuals of different races and sexes, also to identify the differences between the people of Iraq and other …

Rapid Sequence Induction Using Rocuronium In Adult Patients, Ahmed Mohammed Hussein, Hasan Sarhan, Ahmed Saeed Abdullah

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Several studies using rocuronium as an alternative to suxamethonium for endotracheal intubating conditions in rapid sequence induction are available in literature, all claiming obvious advantages, but intubating conditions after suxamethonium and rocuronium have not been assessed in our hospitals yet. OBJECTIVE: The aim of this study was to assess the efficacy of rocuronium for rapid sequence induction by comparing the endotracheal intubating conditions with suxamethonium, following induction with sodium thiopentone as the sole induction agent in elective, otherwise healthy, adult patients. MATERIALS AND METHODS: The patients were divided into two groups, each consisting of 40 patients: group A …

Effect Of Pressure Support Ventilation Usage At The End Of Surgery On The Recovery From General Anesthesia In Extra Peritoneal Surgery, Raghad Hannon Shinen Alsudani

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Recovery speed and quality from general anesthesia has been proposed as possible measure of quality of anesthesia. Recovery is affected by many factors; patient status, drugs used, surgical procedure and time of it. OBJECTIVE: To assess the effect of using pressure support ventilation at the end of surgery on the recovery from general anesthesia in extra peritoneal surgery. METHODS AND RESULTS: 100 patients had enrolled in study from 1st/11/2014 till 20th/1/2016 in medical city complex hospitals. All patients were received general anesthesia with endotracheal tube and same anesthetic management and considering score of 10/10 from modified aldrete criteria …

Overweight And Obesity In A Sample Of Primary School Children In Baghdad, Faris Al Lami, Riyadh Alredainy

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Obesity is one of the most serious public health problems of the 21st century, that has many serious long-term consequences for health. The prevalence of childhood obesity has been increasing at worrying rates across the globe. OBJECTIVE: To measure the prevalence and identify potential risk factors of overweight and obesity among a sample of primary school children in Baghdad, Iraq. METHODS: This cross-sectional study was conducted on a random sample of 10 primary schools from different localities of Baghdad, followed by a systematic random sample of 620 children aged 10 years or more of both sexes. A questionnaire …

The Role Of Alpha Blockers In The Treatment Of Children With Voiding Dysfunction, Dhia A. Kareem, Omar A. Hassan

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Voiding dysfunction is an important problem in chil¬dhood due to its relatively high prevalence and the fact that it may cause upper urinary tract dete¬rioration with renal scarring. Pharmacological therapy is considered as one of the important measures to improve bladder emptying ,Several reports have supported the effectiveness of α-blockers in treating voiding dysfunction in children. OBJECTIVE: To evaluate the safety and efficacy of using selective alpha blocker therapy for children with voiding dysfunction. PATIENTS AND METHODS: A prospective study conducted from January 2011 to December 2013 in Al- Ramadi teaching hospital. 24 children with mean age 9.9 …

Echocardiographic Assessment Of Left Ventricular Remodeling Process Among Acute Myocardial Infarction Patients, Abbas Khalifa Ressan, Asaad Abdullah Abbas, Mayyadah Dheyauldeen Mohsin

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Echocardiography is use for assessment of left ventricular remodeling after myocardial infarction, which is the focus of this thesis. We investigated the influence of various traditional echocardiographic parameters to assess the process of left ventricular remodeling such as left ventricular volumes and ejection fraction, wall motion score index, mitral regurgitation and diastolic dysfunction OBJECTIVE: To invistigate the usefulness of two-dimensional echocardiography for accurate evaluation of left ventricular (LV) remodeling after acute ST elevation myocardial infarctions (STEMI). METHODS AND RESULTS: Two-dimensional echocardiography was performed within 5 days on a 100 patients admitted to the hospital with a first ST-elevation …

Body Surface Area And Sheath Size As A Risk Factors For Vascular Complications After Coronary Angiography Via Femoral Approach, Salah Mahdy Majeed, Ali Mohammed Jawad, Haithem Ahmed Al-Rubaie, Zahraa Akram Thabit, Saad Kadhum Kareem, Manal Madany A. Qader, Shatha Sami, Wisam Akram, Faten Shalal, Mustafa Nema, Mudher Al-Khairalla

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Vascular complications have been recognized as an important factor in morbidity after diagnostic and percutaneous coronary interventions. OBJECTIVE: This study sought to evaluate vascular body mass index and sheath size as risk factors for vascular complications after diagnostic coronary angiography via femoral approach. PATIENTS AND METHODS: This historical prospective cohort study was carried out from February 2012 till January 2013, at the Iraqi Center for the Heart Disease. A total number of 2400 patients underwent 3600 procedures, diagnostic coronary angiography (2196) and PCI(1404) via their common femoral arteries. Result: Body surface area > 2m2 is a statistically significant factor …

Cd49d As Prognostic Marker In B-Cell Chronic Lymphocytic Leukemia In Correlation With The Expression Of Cd38, Zap-70 And Clinical Binet Stage, Ali Mohammed Jawad, Haithem Ahmed Al-Rubaie, Zahraa Akram Thabit

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Chronic lymphocytic leukemia (CLL) is a heterogeneous disease with highly variable clinical course and outcome. A number of clinical and biological features have been used to separate patients with CLL into subgroups with different prognoses. CD49d, CD38 and ZAP-70 expressions have shown to independently predict prognosis in CLL. OBJECTIVE: To assess the expression of CD49d in CLL patients and correlates them with CD38 and ZAP-70, and with clinical Binet staging. PATIENTS AND METHODS: This study was conducted on 30 newly diagnosed CLL patients. Diagnosis was based on lymphocyte count of > 5×109/L and immunophenotyping. The expression of CD49d, CD38 …

Maternal Height And ‘Shoe Size’ As Predictors Of Intrapartum Complications In Labor With Occiput Posterior Malposition, Shatha Sami, Wisam Akram, Faten Shalal

Iraqi Postgraduate Medical Journal

ABSTRACT: BACKGROUND: Although most women have anormal labour and birth, there are sometimes complication occurring due to multiple factors,occiput posterior postion represent achallenges in diagnosis,labour& intrapartum complication care OBJECTIVE: To evaluate maternal height and shoe size correlates with complications associated with occiput posterior ma position during labor. Type of the study; case control METHODS: A total of 45 primigravida women with android pelvis were chosen versus 45 with gynecoid pelvis according to clinical pelvimetry,Their shoe size and height were recorded. In addition women in both groups were scrutinized for occiput posterior and labor complications associated with condition including secondary arrest …

Publication Trends In Global Output Of Spintronics: A Scientometric Profile, Ramiah Santha Kumar Dr

Library Philosophy and Practice (e-journal)

This paper attempts to highlight the growth and development of Spintronics publication based on Web of Science database during the period 2000-2014. A total of 6195 publications were published on spintronics, which received 134,467 citations. The average number of publications per year was 413 and the average number of citations per publication was 21.71. The publications peaked in 2014 with 874 publications, whereas the highest number of citations 16,696 was received in 2005. The highest number of publications was from USA with 1506 (24.31%) publications and 64.479 (47.95%) citations followed by China with 1.425 (23%) publications, 16.264 (12.10%) citations and …

Lithium-Sulfur (Selenium) Batteries: Interface Issues And Solving Strategies, Nian-Wu Li, Ya-Xia Yin, Yu-Guo Guo

Journal of Electrochemistry

The stable interface is still a challenge for lithium-sulfur (selenium) batteries because of the low conductivity of sulfur (selenium), dissolution of polysulfide (polyselenide), volume expansion of sulfur (selenium), and lithium dendrite growth. This review describers some recent developments in lithium-sulfur (selenium) batteries and highlights our efforts in this field. The possible strategies for building stable interface in the lithium-sulfur (selenium) batteries including nano-restriction effect, chemical bonding, interface adsorption, surface coating, electrolyte optimization, and Lithium anode treatment have been discussed.

Abq Free Press, December 28, 2016, Abq Free Press

ABQ Free Press

No abstract provided.

Lithium Plating Identification From Degradation Behaviors Of Lithium-Ion Cells, Jian-Bo Zhang, Lai-Suo Su, Xin-Yu Li, Hao Ge, Ya-Kun Zhang, Zhe Li

Journal of Electrochemistry

Lithium plating has huge impact on the lifetime and safety of lithium-ion cells. It is, therefore, necessary to identify lithium plating. In this study, the accelerated stress tests of lithium-ion cells were conducted under different conditions with multi-stress loads. Based on the different effects of the two major aging mechanisms, namely, SEI (Solid Electrolyte Interface) layer growth and lithium plating, on the degradation behaviors, two lithium plating identification methods of resistance-capacity plot and Arrhenius plot were employed. The experimental results revealed that the two identification methods are highly consistent with each other. Furthermore, the origins of capacity loss were distinguished …

Intrinsic Interfacial Property Between High-Voltage Lini0.5Mn1.5O4 Cathode And Electrolyte, Li Li, Jing-Jing Xu, Shao-Jie Han, Wei Lu, Li-Wei Chen

Journal of Electrochemistry

To obtain high energy density, developing high-voltage cathode materials is an effective approach. The cathode/electrolyte interface stability is the key factor for the cycle performance and safety performance of high-voltage lithium ion batteries. It is, therefore, of significant importance to study the stability of cathode/electrolyte interface. However, many reports have shown that at the cathode/electrolyte interface the cathodes were prepared by coating the mixture of active materials with a conductive additive and a binder on an Al current collector. The introduction of additives will interfere the surface morphology and component analyses, resulting in difficulty to acquire the intrinsic information at …

Hydrogen Evolution Properties On Individual Mos2 Nanosheets, Yu Gao, Juan Zhou, Yu-Wen Liu, Sheng-Li Chen

Journal of Electrochemistry

Molybdenum disulfide (MoS₂) has been acknowledged to play important roles in hydrogen evolution reaction (HER) for hydrogen energy technology. Both computational and experimental results have suggested that the promising catalytic activity of MoS₂ for the HER could be attributed to the sulfur edges of two-dimensional nanosheets, while their basal planes were catalytically inert. In order to verify this conclusion, we prepared single MoS₂ sheet electrodes which were made of individual MoS₂ sheets attached on the self-assembly monolayers (SAM) of SH(CH₂)₁₅COOH at Au ultramicroelectrodes (Au/SAM/MoS₂). The single MoS₂ sheet …

Slis Connecting Volume 5, Issue 2, Stacy Creel, Teresa S. Welsh Ph.D., Mlis

SLIS Connecting

SLIS Connecting Volume 5, Issue 2 (Fall/Winter 2016)

A Survey And Content Analysis Of Army Manuals Held By The National World War Ii Museum Archives, Amanda Fallis

SLIS Connecting

This study is a content analysis of a collection of several hundred Army manuals published by the War Department, the precursor of the United States Department of Defense (U.S. War Department, 2013). The manuals were in varying conditions, address a variety of topics, and were published in years surrounding and during World War II.

An Historical Analysis Of The Fay B. Kaigler Children’S Book Festival, Leah Rials

SLIS Connecting

This study focuses on investigating the origins of the Fay B. Kaigler Children’s Book Festival, an internationally renowned annual conference hosted at The University of Southern Mississippi. This research is based on archival collections available at the McCain Archives and Special Collections.

‘The Willing Women Are Standing Waiting Now’: British Women, The Second World War, And The Women’S Library At The London School Of Economics And Political Science, Erin Doerner

SLIS Connecting

Since the end of the Second World War some 70 years ago, research and scholarship featuring wartime contributions of the average British citizenhasfocused largely on men's experiences of combat, the various roles of government agencies, or the assumed viability and tenacity of political and military leaders. The role of gender in the experience of war was often a side-note, not a focus of research. Since the 1960s, and more frequently since the late 1980s, a new wartime perspective has begun to be documented and explored in academic and literary scholarship - that of British women.

This study examines primary materials …

Student Associations: News And Events, Usm School Of Library And Information Science

SLIS Connecting

News and events from SLIS student associations: Library and Information Science Students Association (LISSA) and Southern Miss Student Archivists (SMSA).