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https://www.readbyqxmd.com/read/28749503/crab-shell-induced-synthesis-of-ordered-macroporous-carbon-nanofiber-arrays-coupled-with-mnco2o4-nanoparticles-as-bifunctional-oxygen-catalysts-for-rechargeable-zn-air-batteries
#1
Duan Bin, Ziyang Guo, Andebet Gedamu Tamirat, Yuanyuan Ma, Yonggang Wang, Yongyao Xia
The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are traditionally carried out using noble metals (such as Pt) and metal oxides (such as RuO2 and IrO2) as catalysts, respectively. Nevertheless, several key issues such as high cost, poor stability, and detrimental environmental effects limit the catalytic activity of these noble metal- and metal oxide-based catalysts. Herein, we have designed and synthesized macroporous carbon nanofiber arrays by using a natural crab shell template. Subsequently, spinel MnCo2O4 nanoparticles were embedded into the nitrogen-doped macroporous carbon nanofiber arrays (NMCNAs) by a hydrothermal method...
July 27, 2017: Nanoscale
https://www.readbyqxmd.com/read/28749354/real-time-cloth-rendering-with-fiber-level-detail
#2
Kui Wu, Cem Yuksel
Modeling cloth with fiber-level geometry can produce highly realistic details. However, rendering fiber-level cloth models not only has a high memory cost but it also has a high computation cost even for offline rendering applications. In this paper we present a real-time fiber-level cloth rendering method for current GPUs. Our method procedurally generates fiber-level geometric details on-the-fly using yarn-level control points for minimizing the data transfer to the GPU. We also reduce the rasterization operations by collectively representing the fibers near the center of each ply that form the yarn structure...
July 26, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28749267/comparison-of-isoflurane-and-sevoflurane-for-short-term-anesthesia-in-meerkats-suricata-suricatta-are-there-benefits-that-outweigh-costs
#3
Taina B Strike, Jon Bielby, Yedra Feltrer, Hatim I K Alibhai, Matthew Rendle, David M Neilson
Meerkats ( Suricata suricatta ) are routinely anesthetized with isoflurane in zoo and field settings. Twenty healthy adult meerkats of mixed age and sex held in the Zoological Society of London's collection were anesthetized with 4% isoflurane by face mask for routine health examinations. The procedure was repeated 5 mo later in the same group of animals utilizing sevoflurane at 5% for induction, and again 3 mo later with sevoflurane at 6.5% for induction to approximate equipotency with isoflurane. The speed and quality of induction and recovery were compared between the two volatile anesthetic agents...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28749155/assisting-upon-entry-helping-type-and-approach-as-moderators-of-how-role-conflict-affects-newcomer-resource-drain
#4
Peter A Bamberger, Dvora Geller, Etti Doveh
We extend recent research on the costs and benefits of helping to help providers by asking whether and under what conditions newcomer help giving may amplify or mitigate the role-conflict-based resource drain such individuals may experience in the context of their initial socialization. Drawing from conservation of resources (COR) theory, we propose that whether providing assistance to peers enhances or weakens newcomer help providers' resilience to such conflict-based resource drain (i.e., exhaustion) depends on both the type of help given (instrumental vs...
July 27, 2017: Journal of Applied Psychology
https://www.readbyqxmd.com/read/28749136/high-performance-pyrochlore-type-yttrium-ruthenate-electrocatalyst-for-oxygen-evolution-reaction-in-acidic-media
#5
Jaemin Kim, Pei-Chieh Shih, Kai-Chieh Tsao, Yung-Tin Pan, Xi Yin, Cheng-Jun Sun, Hong Yang
Development of acid-stable electrocatalysts with low overpotential for oxygen evolution reaction (OER) is a major challenge to produce of hydrogen directly from water. We report in this paper a pyrochlore yttrium ruthenate (Y2Ru2O7-δ) electrocatalyst that has significantly enhanced performance towards OER in acid media over the best-known catalysts, with an onset overpotential of 190 mV and high stability in 0.1-M perchloric acid solution. X-ray absorption near-edge structure (XANES) indicates Y2Ru2O7-δ electrocatalyst had a low valence state that favors the high OER activity...
July 27, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28749111/syncope-in-pediatric-patients-a-practical-approach-to-differential-diagnosis-and-management-in-the-emergency-department-digest
#6
Colleen Fant, Ari Cohen, Michelle N Vazquez
Syncope is a condition that is often seen in the emergency department. Most syncope is benign, but it can be a symptom of a life-threatening condition. While syncope often requires an extensive workup in adults, in the pediatric population, critical questioning and simple, noninvasive testing is usually sufficient to exclude significant or life-threatening causes. For low-risk patients, resource-intensive workups are rarely diagnostic, and add significant cost to medical care. This issue will highlight critical diseases that cause syncope, identify high-risk "red flags," and enable the emergency clinician to develop a cost-effective, minimally invasive algorithm for the diagnosis and treatment of pediatric syncope...
April 22, 2017: Pediatric Emergency Medicine Practice
https://www.readbyqxmd.com/read/28748911/a-novel-and-quick-pcr-based-method-to-genotype-mice-with-a-leptin-receptor-mutation-db-db-mice
#7
Bao-Yu Peng, Qiang Wang, Yan-Hong Luo, Jian-Feng He, Tao Tan, Hua Zhu
db/db mice is one of most widely used animal models in studying the cellular and molecular mechanisms of metabolic disorders, such as diabetes, hyperlipidemia, and obesity. The mice carry spontaneous point mutations in the gene encoding the leptin receptor, leading to leptin receptor inactivation. Since homozygous db/db mice are sterile, the maintenance of db/db mice requires breeding between heterozygous pairs, which makes genotyping essential for the identification of offspring. The aim of this study was to develop a quick and highly repeatable method for genotyping db/db mice, which comprised only three simple steps: Genomic DNA is extracted from either tail tips or ear notches via alkaline lysis (∼20 min); Samples are then subjected to tetra-primer amplification refractory mutation system-polymerase chain reaction (ARMS-PCR) using specially designed and validated primer sets (∼1...
July 27, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28748654/review-article-does-acupuncture-have-a-role-in-providing-analgesia-in-the-emergency-setting-a-systematic-review-and-meta-analysis
#8
REVIEW
Andrew L Jan, Emogene S Aldridge, Ian R Rogers, Eric J Visser, Max K Bulsara, Richard C Niemtzow
Acupuncture might offer a novel approach to improve ED pain management. Our primary aim was to assess the efficacy of acupuncture in the emergency setting while secondary objectives were to explore its suitability through its side-effect profile, patient satisfaction, cost, administration time and points used. Seven databases and Google Scholar were searched up to 31 July 2016 using MeSH descriptors for three overarching themes concerning acupuncture, pain management and emergency medicine. Meta-analysis was performed on randomised trials for three comparator groups: acupuncture versus sham, acupuncture versus standard analgesia care and acupuncture-as-an-adjunct to standard care, to calculate the standardised mean difference and weighted mean difference for pain scores out of 10...
July 26, 2017: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/28748564/medicare-spending-for-breast-prostate-lung-and-colorectal-cancer-patients-in-the-year-of-diagnosis-and-year-of-death
#9
Christopher T Chen, Ling Li, Gabriel Brooks, Michael Hassett, Deborah Schrag
OBJECTIVE: To characterize spending patterns for Medicare patients with incident breast, prostate, lung, and colorectal cancer. DATA SOURCES/STUDY SETTING/STUDY DESIGN: 2007-2012 data from the Surveillance, Epidemiology, and End Results Program linked with Medicare fee-for-service claims. DATA COLLECTION/EXTRACTION METHODS: We calculate per-patient monthly and yearly mean and median expenditures, by cancer type, stage at diagnosis, and spending category, over the years of diagnosis and death...
July 26, 2017: Health Services Research
https://www.readbyqxmd.com/read/28748516/colorimetric-sensing-of-toxic-metal-and-antibacterial-studies-by-using-bioextract-synthesized-silver-nanoparticles
#10
A Kalam, A G Al-Sehemi, S Alrumman, G Du, M Pannipara, Mohammed Assiri, Hussain Almalki, Mahmoud F Moustafa
Here, we report the simple and cost effective colorimetric technique for the determination of toxic metals (Hg(2+)) in aqueous sample by using bioextract silver nanoparticles (AgNPs). The indigenous AgNPs were synthesised by green and ecologically friendly style using extract of fig (Ficus carica) leaf. The synthesized AgNPs were confirmed by UV-vis spectroscopy, FT-IR spectroscopy, and scanning electron microscopy methods. The synthesis of AgNPs was observed by its colour changing from light yellow to dark brownish...
July 26, 2017: Journal of Fluorescence
https://www.readbyqxmd.com/read/28748493/cost-effectiveness-of-preimplantation-genetic-screening-for-women-older-than-37-undergoing-in-vitro-fertilization
#11
Stephen C Collins, Xiao Xu, Winifred Mak
PURPOSE: Adding preimplantation genetic screening to in vitro fertilization has been shown to increase live birth rate in women older than 37. However, preimplantation genetic screening is an expensive procedure. Information on the cost-effectiveness of preimplantation genetic screening can help inform clinical decision making. METHODS: We constructed a decision analytic model for a hypothetical fresh, autologous in vitro fertilization cycle (with versus without preimplantation genetic screening) for women older than age 37 who had a successful oocyte retrieval and development of at least one blastocyst...
July 27, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28748473/evaluation-of-embryotoxicity-using-the-zebrafish-model
#12
Lisa Truong, Robert L Tanguay
The embryonic zebrafish model offers the power of whole-animal investigations (e.g., intact organism, functional homeostatic feedback mechanisms, and intercellular signaling) with the convenience of cell culture (e.g., cost- and time-efficient, minimal infrastructure, small quantities of solutions required). The model system overcomes many of the current limitations in rapid to high-throughput screening of drugs/compounds and casts a broad net to rapidly evaluate integrated system effects. Additionally, it is an ideal platform to follow up with targeted studies aimed at the mechanisms of toxic action...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28748448/adding-a-brief-self-report-cognitive-tool-to-the-ihds-improves-effectiveness-of-identifying-patients-with-hiv-associated-dementia-in-south-africa
#13
Hetta Gouse, Martine Casson-Crook, Eric H Decloedt, John A Joska, Kevin G F Thomas
We compared the diagnostic accuracy of two brief screening tools (the International HIV Dementia Scale (IHDS), and the IHDS combined with a novel self-report instrument, the HIV Cognitive Symptom Questionnaire (HCSQ)) with that of three brief neuropsychological screening batteries (a 2-, a 3-, and a 4-test battery, each consisting of standardized cognitive tests) in discriminating individuals with HIV-associated dementia (HAD) from those with milder forms of cognitive impairment. We analyzed data from 94 isiXhosa-speaking South African HIV-infected participants who were screened as part of a clinical trial evaluating adjunctive treatment in patients with moderate to severe HIV-associated cognitive impairment...
July 26, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28748405/the-burden-of-chronic-urticaria-from-brazilian-patients-perspective
#14
Maria-Magdalena Balp, Nilcéia Lopes da Silva, Jeffrey Vietri, Haijun Tian, Luis F Esina
INTRODUCTION: Chronic urticaria (CU), a proxy for chronic spontaneous urticaria, has been associated with a negative impact on health-related quality of life (HRQoL) and costs, but there is limited evidence on the burden of CU in Brazil. The objective of this study was to estimate the prevalence of CU and assess the burden of CU on HRQoL and healthcare resource utilization (HRU) among adults in Brazil. METHODS: This retrospective, cross-sectional study, pooled data from the 2011, 2012, and 2015 National Health and Wellness Survey in Brazil (n = 36,000)...
July 26, 2017: Dermatology and Therapy
https://www.readbyqxmd.com/read/28748367/commercial-online-social-network-data-and-statin-side-effect-surveillance-a-pilot-observational-study-of-aggregate-mentions-on-facebook
#15
Marco D Huesch
INTRODUCTION: Surveillance of the safety of prescribed drugs after marketing approval has been secured remains fraught with complications. Formal ascertainment by providers and reporting to adverse-event registries, formal surveys by manufacturers, and mining of electronic medical records are all well-known approaches with varying degrees of difficulty, cost, and success. Novel approaches may be a useful adjunct, especially approaches that mine or sample internet-based methods such as online social networks...
July 26, 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/28748107/study-protocol-a-mixed-methods-feasibility-study-for-a-loaded-self-managed-exercise-programme-for-patellofemoral-pain
#16
Benjamin E Smith, Paul Hendrick, Marcus Bateman, Fiona Moffatt, Michael Skovdal Rathleff, James Selfe, Toby O Smith, Pip Logan
BACKGROUND: Patellofemoral pain (PFP) is one of the most common forms of knee pain in adults under the age of 40, with a prevalence of 23% in the general population. The long-term prognosis is poor, with only one third of people pain-free 1 year after diagnosis. The biomedical model of pain in relation to persistent PFP has recently been called into question. It has been suggested that interventions for chronic musculoskeletal conditions should consider alternative mechanisms of action, beyond muscles and joints...
2018: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/28748054/autologous-periodontal-stem-cell-assistance-in-periodontal-regeneration-technique-sai-prt-in-the-treatment-of-periodontal-intrabony-defects-a-case-report-with-one-year-follow-up
#17
Vandana Kl, Haneet Ryana, Priyanka Jairaj Dalvi
Numerous animal and human studies have provided evidence supporting the belief that periodontal ligament stem cells (PDLSCs) can be harnessed for regeneration of periodontal tissues. Based on current literature on the use of ex vivo stem culture and associated problems, this case report describes a novel approach of direct application PDLSCs using stem cell assistance in periodontal regeneration technique (SAI-PRT) for the regeneration of intrabony periodontal defects bypassing ex vivo cultures. SAI-PRT has emerged as a constructive avenue in the treatment of periodontal osseous defects...
2017: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/28747925/manipulating-planting-density-and-nitrogen-fertilizer-application-to-improve-yield-and-reduce-environmental-impact-in-chinese-maize-production
#18
Cailong Xu, Shoubing Huang, Beijing Tian, Jianhong Ren, Qingfeng Meng, Pu Wang
Relatively low nitrogen (N) efficiency and heavy environmental costs caused by excessive N fertilizer applications with outdated fertilization techniques are current cultivation production problems with maize among smallholders in North China Plain. Although many studies have examined agronomical strategies for improving yields and N use, the integrated effects of these measures and the associated environmental costs are not well understood. We conducted a 2-year field study with two densities (67,500 plants ha(-1), which was similar to local farmers' practices, and 90,000 plants ha(-1)) and three N rates (0, 180, and 360 kg ha(-1), the rate local farmers' commonly apply) to test the integrated effects for maize production at Wuqiao experimental station in North China Plain...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28747903/stoichiometric-mismatch-between-consumers-and-resources-mediates-the-growth-of-rocky-intertidal-suspension-feeders
#19
Matthew E S Bracken
The concept of ecological stoichiometry-the balancing of elemental ratios in ecological interactions-has transformed our thinking about processes in natural systems. Here, this perspective is applied to rocky shore ecosystems to explore the consequences of variation in internal nutrient ratios across two trophic levels. Specifically, I measured the internal concentrations of carbon (C) and nitrogen (N) in mussels (Mytilus spp.) and particulate organic matter (POM) to evaluate the effects of stoichiometric mismatch-the difference in the carbon-to-nitrogen ratio (C:N) between a consumer and its resources-on mussel growth at sites on the coasts of Oregon, USA, and the South Island of New Zealand...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28747822/beneficial-effect-of-bifidobacterium-longum-atcc-15707-on-survival-rate-of-clostridium-difficile-infection-in-mice
#20
Bohyun Yun, Minyu Song, Dong-June Park, Sejong Oh
Clostridium difficile infection (CDI) is the main cause of hospital-acquired diarrhea that can cause colitis or even death. The medical-treatment cost and deaths caused by CDI are increasing annually worldwide. New approaches for prevention and treatment of these infections are needed, such as the use of probiotics. Probiotics, including Bifidobacterium spp. and Lactobacillus, are microorganisms that confer a health benefit to the host when administered in adequate amounts. The effect of Bifidobacterium longum ATCC 15707 on infectious disease caused by C...
2017: Korean Journal for Food Science of Animal Resources
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