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https://www.readbyqxmd.com/read/28350466/wrapping-aligned-carbon-nanotube-composite-sheets-around-vanadium-nitride-nanowire-arrays-for-asymmetric-coaxial-fiber-shaped-supercapacitors-with-ultrahigh-energy-density
#1
Qichong Zhang, Xiaona Wang, Zhenghui Pan, Juan Sun, Jingxin Zhao, Jun Zhang, Cuixia Zhang, Lei Tang, Jie Luo, Bin Song, Zengxing Zhang, Weibang Lu, Qingwen Li, Yuegang Zhang, Yagang Yao
The emergence of fiber-shaped supercapacitors (FSSs) has led to a revolution in portable and wearable electronic devices. However, obtaining high energy density FSSs for practical applications is still a key challenge. This article exhibits a facile and effective approach to directly growth well-aligned three-dimensional vanadium nitride (VN) nanowire arrays (NWAs) on carbon nanotube (CNT) fiber with an ultrahigh specific capacitance of 715 mF/cm2 in a three-electrode system. Benefiting from their intriguing structural features, we successfully fabricated a prototype asymmetric coaxial FSS (ACFSS) with a maximum operating voltage of 1...
March 28, 2017: Nano Letters
https://www.readbyqxmd.com/read/28346902/in-situ-synthesis-of-cobalt-ferrites-embedded-hollow-n-doped-carbon-as-an-outstanding-catalyst-for-elimination-of-organic-pollutants
#2
Tao Zeng, Mingdong Yu, Haiyan Zhang, Zhiqiao He, Xiaole Zhang, Jianmeng Chen, Shuang Song
Using polydopamine-metal ions complex as precursor, hollow mesoporous N-doped carbon microspheres encapsulating spinel ferrites nanocrystals (HM-NC/CoFe2O4) were facilely prepared with the aim of creating a novel heterogeneous catalyst for sulfate radical-based oxidation of organic contaminants. The surface morphology, structure and composition of HM-NC/CoFe2O4 catalyst were thoroughly investigated. The applicability of the catalyst was systematically assessed through numerous controlled trials, several operating parameters, as well as different model pollutants by means of peroxymonosulfate (PMS) activation...
March 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28345494/adaptation-and-validation-of-the-alzheimer-s-disease-assessment-scale-cognitive-adas-cog-in-a-low-literacy-setting-in-sub-saharan-africa
#3
Stella-Maria Paddick, Aloyce Kisoli, Sarah Mkenda, Godfrey Mbowe, William Keith Gray, Catherine Dotchin, Adesola Ogunniyi, John Kisima, Olaide Olakehinde, Declare Mushi, Richard William Walker
OBJECTIVE: This study aimed to assess the feasibility of a low-literacy adaptation of the Alzheimer's Disease Assessment Scale - Cognitive (ADAS-Cog) for use in rural sub-Saharan Africa (SSA) for interventional studies in dementia. No such adaptations currently exist. METHODS: Tanzanian and Nigerian health professionals adapted the ADAS-Cog by consensus. Validation took place in a cross-sectional sample of 34 rural-dwelling older adults with mild/moderate dementia alongside 32 non-demented controls in Tanzania...
March 27, 2017: Acta Neuropsychiatrica
https://www.readbyqxmd.com/read/28345364/anatomically-contoured-anterior-plating-for-isolated-tibiotalar-arthrodesis
#4
Nicholas Kusnezov, John C Dunn, Logan R Koehler, Justin D Orr
INTRODUCTION: We performed a systematic review of the published literature to characterize patient demographic, surgical techniques, and functional outcomes to elucidate the complication and revision rates following isolated tibiotalar arthrodesis with anatomically contoured anterior plating. METHODS: A comprehensive literature search was performed. Inclusion criteria were peer-reviewed studies in English, after 1990, at least 10 patients, and reporting clinical outcomes following contoured anterior plating and with follow-up of at least 80% and 1 year...
March 1, 2017: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/28345220/boosting-the-performance-of-the-nickel-anode-in-the-oxygen-evolution-reaction-by-simple-electrochemical-activation
#5
Tatsuya Shinagawa, Marcus Tze-Kiat Ng, Kazuhiro Takanabe
The development of cost-effective and active water-splitting electrocatalysts that work at mild pH is an essential step towards the realization of sustainable energy and material circulation in our society. Its success requires a drastic improvement in the kinetics of the anodic half-reaction of the oxygen evolution reaction (OER), which determines the overall system efficiency to a large extent. A simple electrochemical protocol has been developed to activate Ni electrodes, by which a stable NiOOH phase was formed, which could weakly bind to alkali-metal cations...
March 27, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28344529/clinical-evaluation-after-peripheral-nerve-repair-with-caprolactone-neurotube
#6
Gabriel Costa Serrão de Araújo, Bernardo Couto Neto, Renato Harley Santos Botelho, Marcio Carpi Malta
Background: Peripheral nerve injuries with substance loss are challenges to surgeons because direct suture repair may result in malfunction due to nerve suture tension. Autologous nerve grafts are alternatives for treating those lesions; however, harvesting grafts adds morbidity at donor sites. Synthetic substitutes are options to bridge the gaps in these situations. The caprolactone neurotubes are used to assist nerve regeneration, but the literature lacks studies that evaluate their results. Methods: This research was designed to clinically evaluate patients undergoing repair of peripheral nerves with that conduit...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28343784/a-modified-intraoral-and-extraoral-approach-osteotomy-for-the-prominent-mandibular-angle
#7
Rui Lei, Yang Wang, Shengquan Xu, Fuliang Hong, Mingyuan Xu, Liyuan Wei, Jinghong Xu
BACKGROUND: A prominent mandibular angle (PMA) is a relatively common condition in Asians, and surgeons typically use the intraoral approach to treat it. However, the approach can have many drawbacks due to the limited operative field and view. The procedures of osteotomy are not easily manipulated, and an exact resection is difficult. In addition, some major complications can easily occur. This article presents a modified osteotomy method for the PMA that avoids these disadvantages and makes the procedure easier to execute...
March 1, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28343685/evaluation-of-sources-of-irreproducibility-of-retention-indices-under-programmed-temperature-gas-chromatography-conditions
#8
Liejun Wu, Ii Kyu Cho, Yanjie Li, Guangxiang Zhang, Qing X Li
Retention index under the programmed temperature gas chromatography (PTGC) conditions (I(T)) is widely accepted despite of its unsatisfactory reproducibility. Effects of heating rate (rT), stationary liquid film thickness (df), inlet pressure (pi), initial temperature (To) and polarity of stationary phase (sp) on I(T) reproducibility were studied in the present work. We found that excellent reproducibility and regularity of I(T) values are obtainable at conditions of relatively low To and relatively high rT and pi, as well as use of quality thick-film column under an operation in a single-retention behavior region (i...
March 8, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28343325/mri-can-accurately-detect-meniscal-ramp-lesions-of-the-knee
#9
Justin W Arner, Elmar Herbst, Jeremy M Burnham, Ashish Soni, Jan-Hendrik Naendrup, Adam Popchak, Freddie H Fu, Volker Musahl
PURPOSE: Posterior horn meniscal tears are commonly found in conjunction with anterior cruciate ligament (ACL) injury. Some believe tears in the posterior meniscocapsular zone, coined ramp lesions, are important to knee stability. The purpose of this study was to determine whether pre-operative MRI evaluation was able to accurately and reproducibly identify ramp lesions. METHODS: Three blinded reviewers assessed MRIs twice for the presence of ramp lesions in patients undergoing ACL reconstruction...
March 25, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28342089/voluntary-induction-and-maintenance-of-alcohol-dependence-in-rats-using-alcohol-vapor-self-administration
#10
Giordano de Guglielmo, Marsida Kallupi, Maury D Cole, Olivier George
RATIONALE: A major issue in the addiction field is the limited number of animal models of the voluntary induction and maintenance of alcohol dependence in outbred rats. OBJECTIVES: To address this issue, we developed a novel apparatus that vaporizes alcohol for 2-10 min after an active nosepoke response. METHODS: Male Wistar rats were allowed to self-administer alcohol vapor for 8 h/day every other day for 24 sessions (escalated) or eight sessions (non-escalated)...
March 24, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28341489/automatic-evaluation-of-scan-adequacy-and-dysplasia-metrics-in-2-d-ultrasound-images-of-the-neonatal-hip
#11
Niamul Quader, Antony J Hodgson, Kishore Mulpuri, Emily Schaeffer, Rafeef Abugharbieh
Ultrasound (US) imaging of an infant's hip joint is widely used for early detection of developmental dysplasia of the hip. In current US-based diagnosis of developmental dysplasia of the hip, trained clinicians acquire US images and, if they judge them to be adequate (i.e., to contain relevant hip joint structures), analyze them manually to extract clinically useful dysplasia metrics. However, both the scan adequacy classification and dysplasia metrics extraction steps exhibit significant variability within and between both clinicians and institutions, which can result in significant over- and undertreatment rates...
March 21, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28341102/bicolumnar-90-90-plating-of-ao-13c-type-fractures
#12
Cemal Kural, Ersin Ercin, Mehmet Erkilinc, Evren Karaali, Mustafa Gokhan Bilgili, Suleyman Altun
OBJECTIVE: The aim of this study was to evaluate functional results and complication rate of patients who underwent medial-dorsolateral plating for intra-articular distal humeral fracture (Müller AO type 13C). METHODS: Twenty-four patients (14 men, 10 women; mean age: 47 years) with AO type 13C distal humerus fracture were included in the study. Mean follow-up time was 28 months. Nine patients were in 13C1 subgroup, according to AO classification system, 11 patients were categorized as 13C2, and 4 patients were 13C3...
March 21, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28338438/learning-brain-aneurysm-microsurgical-skills-in-a-human-placenta-model-predictive-validity
#13
Marcelo Magaldi Ribeiro de Oliveira, Carlos Eduardo Ferrarez, Taise Mosso Ramos, Jose Augusto Malheiros, Arthur Nicolato, Carla Jorge Machado, Mauro Tostes Ferreira, Fellype Borges de Oliveira, Cecília Félix Penido Mendes de Sousa, Pollyana Helena Vieira Costa, Sebastiao Gusmao, Giuseppe Lanzino, Rolando Del Maestro
OBJECTIVE Surgery for brain aneurysms is technically demanding. In recent years, the process to learn the technical skills necessary for these challenging procedures has been affected by a decrease in the number of surgical cases available and progressive restrictions on resident training hours. To overcome these limitations, surgical simulators such as cadaver heads and human placenta models have been developed. However, the effectiveness of these models in improving technical skills is unknown. This study assessed concurrent and predictive validity of brain aneurysm surgery simulation in a human placenta model compared with a "live" human brain cadaveric model...
March 24, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28337912/nanostructured-nickel-cobalt-titanium-alloy-grown-on-titanium-substrate-as-efficient-electrocatalysts-for-alkaline-water-electrolysis
#14
Pandian Ganesan, Sivanantham Arumugam, Sangaraju Shanmugam
One of the important challenges in alkaline water electrolysis are to utilize a bifunctional catalyst for both hydrogen evolution (HER) and oxygen evolution (OER) reactions to increase the efficiency of water splitting devices for the long durable operations. Herein, nickel-cobalt-titanium alloy directly grown on a high corrosion resistance titanium foil (NCT) by a simple, single and rapid electrochemical deposition at room temperature. The electrocatalytic activity of NCT alloy electrodes is evaluated for both HER and OER in aqueous electrolyte...
March 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28337908/detection-of-2-4-6-trinitrotoluene-using-a-miniaturized-disposable-electrochemical-sensor-with-an-ionic-liquid-gel-polymer-electrolyte-film
#15
Holly A Yu, Junqiao Lee, Simon W Lewis, Debbie Sue Silvester
A new electrochemical method to detect and quantify the explosive compound 2,4,6-trinitrotoluene (TNT) in aqueous solutions is demonstrated. A disposable thin-film electrode modified with a droplet of a gel-polymer electrolyte (GPE) was immersed directly into samples of TNT at concentrations of 1-10 μg/mL. The GPE contained the hydrophobic room temperature ionic liquid (RTIL) trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl)imide ([P14,6,6,6][NTf2]) and the polymer poly(hexyl methacrylate) (PHMA)...
March 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28337765/quality-control-of-apheresis-platelets-a-multicentre-study-to-evaluate-factors-that-can-influence-ph-measurement
#16
M Germain, Y Grégoire, R R Vassallo, J P Acker, R Cardigan, D de Korte, D O Irving, S Bégué
BACKGROUND AND OBJECTIVES: Blood operators routinely monitor the pH of apheresis platelets as a marker of the so-called storage lesion, which can result from manufacturing problems. It is also suspected that some donor characteristics can increase the risk of poor platelet storage. To explore this hypothesis, we analysed a large, multinational data set of quality control (QC) pH test results on apheresis platelets. MATERIALS AND METHODS: For the period between September 2011 and August 2014, seven blood operators in Canada, the USA, the Netherlands, the United Kingdom, France and Australia provided pH QC test results and donor characteristics on a total of 21,671 apheresis platelets...
March 23, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28337591/arthroscopic-r-lcl-plication-for-symptomatic-minor-instability-of-the-lateral-elbow-smile
#17
Paolo Arrigoni, Davide Cucchi, Riccardo D'Ambrosi, Alessandra Menon, Alberto Aliprandi, Pietro Randelli
PURPOSE: Minor instability has been proposed as a possible aetiology of lateral elbow pain. This study presents the results of the arthroscopic plication of the radial component of the lateral collateral ligament (R-LCL) to reduce minor instability of the lateral elbow. METHODS: Twenty-seven patients with recalcitrant lateral epicondylitis who had failed conservative therapy and who had no previous trauma or overt instability, were included. R-LCL plication was performed in the presence of at least one sign of lateral ligamentous patholaxity and one intra-articular abnormal finding...
March 23, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28337498/palladium-catalyzed-intermolecular-amination-of-unactivated-c-sp-3-h-bonds-via-a-cleavable-directing-group
#18
Lianwen Jin, Xiaoli Zeng, Siyang Li, Xuechuan Hong, Guofu Qiu, Peng Liu
Palladium-catalyzed intermolecular amination of unactivated C(sp(3))-H bonds was developed. Using NFSI as both the amino source and the oxidant, this protocol operates under mild conditions with excellent terminal selectivity and a broad substrate scope. Moreover, the directing group can be easily removed to produce 1,2-amino alcohols.
March 24, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28336447/anatomical-reconstruction-of-the-fourth-brachymetatarsia-with-one-stage-iliac-bone-and-cartilage-cap-grafting
#19
Sang-Hyun Woo, Chi Young Bang, Hee-Chan Ahn, Sung-Jung Kim, Jun-Young Choi
BACKGROUND: We present a one-stage procedure for lengthening the fourth brachymetatarsia with autogenous iliac bone and cartilage cap grafting for the anatomical reconstruction of the metatarsophalangeal (MTP) joint METHODS: During the last 8 years, 56 feet in 41 patients with congenital brachymetatarsia of the fourth toe were corrected with a one-stage operation to reposition the articular cartilage cap to the distal part of interpositional iliac bone graft at the metatarsal epiphysis...
February 28, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28336421/percutaneous-planter-fasciitis-release-under-local-anesthesia-a-prospective-study
#20
Ramji Lal Sahu
PURPOSE: Plantar fasciitis is the most common cause of pain on the bottom of the heel. It occurs when the strong band of the tissue supporting the arch of foot becomes irritated and inflamed. The majority of patients can be treated conservatively but some resistant cases need surgery eventually. This study aims to evaluate the outcome results of percutaneous planter fascia release under local anesthesia for chronic planter fasciitis. METHODS: This prospective study was conducted in the Department of Orthopaedic Surgery in the School of Medical Science and Research, Sharda University, India from December 2010 to December 2013...
February 24, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
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