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https://www.readbyqxmd.com/read/28548842/engineering-the-composition-and-structure-of-bimetallic-au-cu-alloy-nanoparticles-in-carbon-nanofibers-self-supported-electrode-materials-for-electrocatalytic-water-splitting
#1
Juan Wang, Han Zhu, Danni Yu, JiaWei Chen, JiaDong Chen, Ming Zhang, LiNa Wang, MingLiang Du
The bimetallic Au-Cu alloy nanoparticles have been constructed in electrospun carbon nanofibers (Au-Cu/CNFs), employing as high efficient hydrogen evolution reaction (HER) electrode. The morphology, structure and composition of bimetallic Au-Cu alloy can be controlled by adjusting the precursor nanofibers through a facile approach. With the increased Cu contents, the Au-Cu alloy have a transition from homogenous AuCu3 alloy phase to Au3Cu phase with Cu shell. The self-supported bimetallic Au-Cu/CNFs hybrid can be directly employed as electrodes materials for water splitting and it showed excellent electrochemical activity, including long-term stability, high exchange current density and low overpotential...
May 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28547999/a-long-term-self-managed-handwriting-intervention-for-people-with-parkinson-s-disease-results-from-the-control-group-of-a-phase-ii-randomized-controlled-trial
#2
Johnny Collett, Marloes Franssen, Charlotte Winward, Hooshang Izadi, Andy Meaney, Wala Mahmoud, Marko Bogdanovic, Martin Tims, Derick Wade, Helen Dawes
OBJECTIVE: To report on the control group of a trial primarily designed to investigate exercise for improving mobility in people with Parkinson's disease (pwP). The control group undertook a handwriting intervention to control for attention and time spent practising a specific activity. DESIGN: Secondary analysis of a two-arm parallel phase II randomized controlled trial with blind assessment. SETTING: Community. PARTICIPANTS: PwP able to walk ⩾100 m and with no contraindication to exercise were recruited from the Thames Valley, UK, and randomized (1:1) to exercise or handwriting, via a concealed computer-generated list...
May 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28545427/advantages-and-limitations-for-users-of-double-pit-pour-flush-latrines-a-qualitative-study-in-rural-bangladesh
#3
Faruqe Hussain, Thomas Clasen, Shahinoor Akter, Victoria Bawel, Stephen P Luby, Elli Leontsini, Leanne Unicomb, Milan Kanti Barua, Brittany Thomas, Peter J Winch
BACKGROUND: In rural Bangladesh, India and elsewhere, pour-flush pit latrines are the most common sanitation system. When a single pit latrine becomes full, users must empty it themselves and risk exposure to fresh feces, pay an emptying service to remove pit contents or build a new latrine. Double pit pour-flush latrines may serve as a long-term sanitation option including high water table areas because the pits do not need to be emptied immediately and the excreta decomposes into reusable soil...
May 25, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28545296/facile-synthesis-of-novel-vanillin-derivatives-incorporating-a-bis-2-hydroxyethyl-dithioacetal-moiety-as-antiviral-agents
#4
Jian Zhang, Lei Zhao, Chun Zhu, Zengxue Wu, Guoping Zhang, Xiuhai Gan, Dengyue Liu, Jianke Pan, De-Yu Hu, Bao-An Song
A series of vanillin derivatives incorporating a bis(2-hydroxyethyl)dithioacetal moiety was designed and synthesized via a facile method. A plausible reaction pathway was proposed and verified by computational studies. Bioassay results demonstrated that target compounds possessed good to excellent activities against potato virus Y (PVY) and cucumber mosaic virus (CMV), of which, compound 6f incorporating a bis(2-hydroxyethyl)dithioacetal moiety, exhibited the best curative and protection activities against PVY and CMV in vivo, with 50% effective concentration values of 217...
May 26, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28544787/analysis-of-adults-with-congenital-heart-disease-presenting-to-pediatric-emergency-departments-with-arrhythmias
#5
Shaun Mohan, Brady S Moffett, Wilson Lam, Caridad de la Uz, Christina Miyake, Santiago O Valdes, Jeffrey J Kim
OBJECTIVE: As survivors of congenital heart disease (CHD) continue to age, healthcare utilization by this population has increased. It is unknown how often these patients utilize the emergency department (ED) at children's hospitals and how arrhythmias play a role in their utilization of care. DESIGN: Using a retrospective cohort design, the Pediatric Hospital Information System (PHIS) database was investigated and we studied adults (≥18 years) with CHD (ACHD) who presented to pediatric EDs from 2004 to 2014...
May 22, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28542530/quality-of-nutrition-services-in-primary-health-care-facilities-implications-for-integrating-nutrition-into-the-health-system-in-bangladesh
#6
Sk Masum Billah, Kuntal Kumar Saha, Abdullah Nurus Salam Khan, Ashfaqul Haq Chowdhury, Sarah P Garnett, Shams El Arifeen, Purnima Menon
BACKGROUND: In 2011, the Bangladesh Government introduced the National Nutrition Services (NNS) by leveraging the existing health infrastructure to deliver nutrition services to pregnant woman and children. This study examined the quality of nutrition services provided during antenatal care (ANC) and management of sick children younger than five years. METHODS: Service delivery quality was assessed across three dimensions; structural readiness, process and outcome...
2017: PloS One
https://www.readbyqxmd.com/read/28542309/predictors-of-loss-to-follow-up-among-patients-on-art-at-a-rural-hospital-in-kwazulu-natal-south-africa
#7
Rachel Arnesen, Anthony P Moll, Sheela V Shenoi
INTRODUCTION: Improved HIV outcomes as a result of expanded antiretroviral therapy (ART) access is threatened by increasing rates of loss to follow up (LTFU) among those on ART, largely reported in urban populations. Some reports suggest that LTFU rates are overestimated due to patient movement to other facilities and inadequate medical records. STUDY OBJECTIVE: To define the proportion disengaging from HIV care as well as the characteristics of those LTFU in order to design and implement appropriate interventions to increase retention...
2017: PloS One
https://www.readbyqxmd.com/read/28541651/channel-crack-designed-gold-pu-sponge-for-highly-elastic-piezoresistive-sensor-with-excellent-detectability
#8
Yun-Hui Wu, Hai-Zhou Liu, Song Chen, Xuchu Dong, Ping-Ping Wang, Shuqi Liu, Yong Lin, Yong Wei, Lan Liu
It is a great challenge to fabricate piezoresistive sensors that possess high elasticity, large-area compliance and excellent detectability to satisfy both extremely tiny and large human activities monitoring. Herein, a novel and facile strategy is reported to manufacture highly elastic channel crack-based gold@PU sponge piezoresistive material. The elastic 3D conductive network is successfully prepared by gold ion sputtering, and channel cracks are skillfully designed on the 3D sponge skeletons. Such novel structure makes these fabricated sensors are capable of monitoring both tiny and large human motions, which originate from the nano-crack joint sensing mechanism and physical contact of conductive interconnected network...
May 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28541034/microfluidic-capillaric-circuit-for-rapid-and-facile-bacteria-detection
#9
Ayokunle Oluwafemi Olanrewaju, Andy Ng, Philippe Decorwin-Martin, Alessandra Robillard, David Juncker
Urinary tract infections (UTI) are one of the most common bacterial infections and would greatly benefit from a rapid point-of-care diagnostic test. Although significant progress has been made in developing microfluidic systems for nucleic acid and whole bacteria immunoassay tests, their practical application is limited by complex protocols, bulky peripherals, and slow operation. Here we present a microfluidic capillaric circuit (CC) optimized for rapid and automated detection of bacteria in urine. Molds for CCs were constructed using previously-established design rules, then 3D-printed and replicated into poly(dimethylsiloxane)...
May 25, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28540698/introduction-on-using-the-fastpcr-software-and-the-related-java-web-tools-for-pcr-and-oligonucleotide-assembly-and-analysis
#10
Ruslan Kalendar, Timofey V Tselykh, Bekbolat Khassenov, Erlan M Ramanculov
This chapter introduces the FastPCR software as an integrated tool environment for PCR primer and probe design, which predicts properties of oligonucleotides based on experimental studies of the PCR efficiency. The software provides comprehensive facilities for designing primers for most PCR applications and their combinations. These include the standard PCR as well as the multiplex, long-distance, inverse, real-time, group-specific, unique, overlap extension PCR for multi-fragments assembling cloning and loop-mediated isothermal amplification (LAMP)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28538979/stanniocalcin-1-is-an-ocular-hypotensive-agent-and-a-downstream-effector-molecule-that-is-necessary-for-the-intraocular-pressure-lowering-effects-of-latanoprost
#11
Gavin W Roddy, Kimberly B Viker, Nelson S Winkler, Cindy K Bahler, Bradley H Holman, David Sheikh-Hamad, Uttio Roy Chowdhury, W Daniel Stamer, Michael P Fautsch
Purpose: To identify downstream signaling molecules through which intraocular pressure (IOP) is lowered following treatment with the prostaglandin analog latanoprost. Methods: Total RNA and protein isolated from primary human Schlemm's canal cells (n = 3) treated with latanoprost (free acid; 100 nM) were processed for quantitative PCR and Western blot analysis. IOP was evaluated in stanniocalcin-1 (STC-1-/-) and wild-type mice following treatment with latanoprost or Rho kinase inhibitor Y27632...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28538934/availability-of-herbal-medicines-and-medicinal-plants-in-the-primary-health-facilities-of-the-state-of-s%C3%A3-o-paulo-southeast-brazil-results-from-the-national-program-for-access-and-quality-improvement-in-primary-care
#12
Maria do Carmo Gullaci Guimarães Caccia-Bava, Bianca Waléria Bertoni, Ana Maria Soares Pereira, Edson Zangiacomi Martinez
This study aims to describe the availability of herbal medicines and medicinal plants in the primary care facilities in the state of São Paulo, Southeast Brazil, from the results of the first cycle of the National Program for Access and Quality Improvement in Primary Care (PMAQ). The PMAQ uses a national cross-sectional multicenter design, with data from 4,249 health facilities distributed among 645 municipalities of the state of São Paulo. Of these facilities, 467 (11%) had herbal medicines and/or medicinal plants...
May 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28538670/design-and-synthesis-of-dendrimers-with-facile-surface-group-functionalization-and-an-evaluation-of-their-bactericidal-efficacy
#13
Elizabeth Ladd, Amir Sheikhi, Na Li, Theo G M van de Ven, Ashok Kakkar
We report a versatile divergent methodology to construct dendrimers from a tetrafunctional core, utilizing the robust copper(I) catalyzed alkyne-azide cycloaddition (CuAAC, "click") reaction for both dendrimer synthesis and post-synthesis functionalization. Dendrimers of generations 1-3 with 8-32 protected or free OH and acetylene surface groups, were synthesized using building blocks that included acetylene- or azide-terminated molecules with carboxylic acid or diol end groups, respectively. The acetylene surface groups were subsequently used to covalently link cationic amino groups...
May 24, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28538643/immature-patients-in-a-mature-system-regional-analysis-of-florida-s-pediatric-trauma-system
#14
Christopher W Snyder, Nicole M Chandler, Cristen N Litz, Etienne E Pracht, Paul D Danielson, David J Ciesla
BACKGROUND: The state of Florida's trauma system is organized into seven regions, two of which lack designated pediatric trauma centers. Injured children residing in these regions often require transfer out of their home region for definitive care. The purpose of this study was to evaluate the effectiveness and efficiency of the current regionalization approach, focusing on variations between regions. METHODS: Using the Florida Agency for Health Care Administration database, we identified all trauma patients 15 years old or younger admitted between 2009 and 2014...
May 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28537738/a-peptoid-square-helix-via-synergistic-control-of-backbone-dihedral-angles
#15
Benjamin Craig Gorske, Emily M Mumford, Charles G Gerrity, Imelda Ko
The continued expansion of the fields of macromolecular chemistry and nanoscience has motivated the development of new secondary structures that can serve as architectural elements of innovative materials, molecular machines, biological probes, and even commercial medicines. Synthetic foldamers are particularly attractive systems for developing such elements because they are specifically designed to facilitate synthetic manipulation and functional diversity. However, relatively few predictive design principles exist that permit both rational and modular control of foldamer secondary structure, while maintaining the capacity for facile diversification of displayed functionality...
May 24, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28537715/facile-synthesis-of-cu-nicu-electrocatalysts-integrating-alloy-core-shell-and-one-dimensional-structures-for-efficient-methanol-oxidation-reaction
#16
Dengfeng Wu, Wei Zhang, Daojian Cheng
The design and development of low-cost Pt-free, high-active and durable noble-metal-free electrocatalysts for methanol electrooxidation is highly desirable but remains a challenge. Herein, unique Cu/NiCu nanowires (NWs) integrating alloy, core-shell and one-dimensional structures are prepared by a facile one-pot strategy. It is found that Ni-Cu surface alloying structure can effectively change the charge distribution of atomic configuration, core-shell structure can be optimally the usage of Ni and Cu, and one-dimensional structure can effectively enhance the charge transfer between electrode surface and active sites, making the prepared NWs as promising electrocatalysts...
May 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28537615/constructing-three-dimensional-porous-ni-ni3s2-nano-interfaces-for-hydrogen-evolution-electrocatalysis-under-alkaline-conditions
#17
Yiming An, Bolong Huang, Zilong Wang, Xia Long, Yongcai Qiu, Jue Hu, Dan Zhou, He Lin, Shihe Yang
It is still a challenging issue to design earth-abundant electrocatalysts with low cost, high activity and long-term stability for the hydrogen evolution reaction (HER) based on water splitting in alkaline solutions. Here, we report a facile synthetic route for a three-dimensional, porous Ni/Ni3S2 nano-network on carbon cloth for the efficient catalysis of HER. This unique structure exposes a high proportion of Ni/Ni3S2 hetero-interfaces to the electrolyte, creating a synergetic effect between Ni and Ni3S2 that enhances HER...
May 24, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28537384/cysteine-functionalized-metal-organic-framework-facile-synthesis-and-high-efficient-enrichment-of-n-linked-glycopeptides-in-cell-lysate
#18
Wen Ma, Linnan Xu, Xianjiang Li, Sensen Shen, Mei Wu, Yu Bai, Huwei Liu
Cysteine-functionalized metal-organic framework (MOF) was synthesized via a common and facile two-step method of in situ loading of Au nanoparticles on amino-derived MOF followed by L-Cysteine immobilization. Owing to the large specific surface area and ultrahigh hydrophilicity of this nanocomposite, excellent performance was observed in the enrichment of N-linked glycopeptides in both model glycoprotein and HeLa cell lysate. By using this nanocomposite, 16 and 31 glycopeptides were efficiently extracted from digest of horseradish peroxidase (HRP) and human serum immunoglobulin G (IgG), respectively...
May 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28537226/toward-hybrid-au-nanorods-m-au-ag-pd-and-pt-core-shell-heterostructures-for-ultrasensitive-sers-probes
#19
Xiaobin Xie, Guanhui Gao, Shendong Kang, Yanhua Lei, Zhengyin Pan, Tamaki Shibayama, Lintao Cai
Being able to precisely control the morphologies of noble metallic nanostructures is of essential significance for promoting the surface-enhanced Raman scattering (SERS) effect. Herein, we demonstrate an overgrowth strategy for synthesizing Au @ M (M = Au, Ag, Pd, Pt) core-shell heterogeneous nanocrystals with an orientated structural evolution and highly improved properties by using Au nanorods as seeds. With the same reaction condition system applied, we obtain four well-designed heterostructures with diverse shapes, including Au concave nanocuboids (Au CNs), Au @ Ag crystalizing face central cube nanopeanuts, Au @ Pd porous nanocuboids and Au @ Pt nanotrepangs...
June 16, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28535028/preparation-of-highly-thermally-conductive-polymer-composite-at-low-filler-content-via-a-self-assembly-process-between-polystyrene-microsphere-and-boron-nitride-nanosheet
#20
Xiongwei Wang, Peiyi Wu
Rational distribution and orientation of boron nitride nanosheets (BNNSs) are very significant for a polymer/BNNS composite to obtain a high thermal conductivity at low filler content. In this paper, a high-performance thermal interface material based on exfoliated BNNSs and polystyrene microspheres was fabricated by latex blending and subsequent compression molding. In this case, BNNSs and polystyrene (PS) microspheres would firstly self-asemble to form the complex microspheres via strong electrostatic interactions between them...
May 23, 2017: ACS Applied Materials & Interfaces
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