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Gerald A Beathard, Aris Urbanes, Terry Litchfield
BACKGROUND AND OBJECTIVES: Marked changes occurred in the vascular access profile of patients receiving hemodialysis in the United States over the 15-year period of 2001-2015. This study was undertaken to evaluate how these changes have affected dialysis access maintenance and salvage procedures performed in freestanding dialysis access centers and to examine the effectiveness, efficiency, and safety of these procedures in this setting. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Data were collected from freestanding, dedicated dialysis access centers operating under a common system of management...
April 18, 2017: Clinical Journal of the American Society of Nephrology: CJASN
Hao-Hua Sun, Mei-Xiao Wang, Fengfeng Zhu, Guan-Yong Wang, Hai-Yang Ma, Zhu-An Xu, Qing Liao, Yunhao Lu, Chun-Lei Gao, Yao-Yi Li, Canhua Liu, Dong Qian, Dandan Guan, Jin-Feng Jia
Ultrathin freestanding bismuth film is theoretically predicted to be one kind of two-dimensional topological insulators. Experimentally, the topological nature of bismuth strongly depends on the situations of the Bi films. Film thickness and interaction with the substrate often change the topological properties of Bi films. Using angle-resolved photoemission spectroscopy, scanning tunneling microscopy or spectroscopy and first-principle calculation, the properties of Bi(111) ultrathin film grown on the NbSe2 superconducting substrate have been studied...
April 20, 2017: Nano Letters
Kang Xiao, Yanhua Zeng, Jin Long, Hongbin Chen, Liangxin Ding, Suqing Wang, Haihui Wang
Freestanding three-dimensional (3D) nitrogen-doped carbon foam (NCF) with large pore architectures is proposed as a promising electrode configuration for elastic electronics. However, although it exhibits excellent mechanical performance, the available capacitive performances (especially its rate capability) are still unsatisfactory. By using KMnO4, we demonstrate a smart etching and catalytic process to form highly graphitized and etched nitrogen-doped carbon foam (denoted as ENCF) with an exfoliated carbon shell architecture...
April 17, 2017: ACS Applied Materials & Interfaces
Cristen N Litz, David J Ciesla, Paul D Danielson, Nicole M Chandler
BACKGROUND: Teenagers receive appendicitis care at both adult and pediatric facilities. The purpose of this study was to evaluate outcomes following treatment of acute appendicitis in teenagers based on the type of hospital facility. METHODS: Patients aged 13-17years with acute appendicitis who were discharged from acute care hospitals from 2009 to 2014 were identified using a statewide discharge dataset. Hospitals were classified as pediatric or adult and outcomes were compared...
April 5, 2017: Journal of Pediatric Surgery
Aimee M Dassner, Jennifer E Girotto
Background.: A second-sign prospective restriction of select broad-spectrum antimicrobials was fully implemented in January 2015 as a pediatric antimicrobial stewardship program (ASP) initiative to help ensure the most appropriate empiric use of ceftaroline, cefepime, fidaxomicin, linezolid, and vancomycin (intravenous). The objective of this evaluation is to assess the effectiveness of a forced second-sign process in the electronic medical record as a pediatric ASP strategy. We anticipated that the second-sign process for antibiotics would increase the appropriateness of empiric antibiotic use, as defined by preapproved criteria, clinical pathways, national guidelines, and pediatric-specific infectious diseases reference texts, while not causing significant delay in the initial administration of antibiotic therapy...
April 12, 2017: Journal of the Pediatric Infectious Diseases Society
Ayse Akcan-Arikan, Daniel J Gebhard, Megan A Arnold, Laura L Loftis, Curtis E Kennedy
OBJECTIVE: Interruptive acute kidney injury alerts are reported to decrease acute kidney injury-related mortality in adults. Critically ill children have multiple acute kidney injury risk factors; although recognition has improved due to standardized definitions, subtle changes in serum creatinine make acute kidney injury recognition challenging. Age and body habitus variability prevent a uniform maximum threshold of creatinine. Exposure of nephrotoxic medications is common but not accounted for in kidney injury scores...
April 12, 2017: Pediatric Critical Care Medicine
Gui-Shi Liu, Jing-Shen Qiu, Duo-Hua Xu, Xianzhong Zhou, Dingyong Zhong, Han-Ping D Shieh, Bo-Ru Yang
We propose a versatile yet practical transferring technique to fabricate a high performance and extremely stable silver nanowire (AgNW) transparent electrode on arbitrary substrates. Hydroxylated poly(ethylene glycol) terephthalate (PET) or poly(dimethylsiloxane) (PDMS) deposited with AgNWs was selectively decorated to lower its polar surface energy, so that the AgNWs were easily and efficiently transferred into an epoxy resin (EPR) as a freestanding film (AgNWs-EPR) or onto various substrates. The AgNWs-EPR capped with alkanethiolate monolayers exhibits high conductivity, low roughness, ultraflexibility, and strong corrosion resistance...
April 21, 2017: ACS Applied Materials & Interfaces
Arezoo Dianat, Zhongquan Liao, Martin Gall, Tao Zhang, Rafael Gutierrez, Ehrenfried Zschech, Gianaurelio Cuniberti
In this work, we show the doping of graphene most likely from heteroatoms induced by the substrate using Raman spectrum, X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDX) and ab initio molecular dynamics simulations. The doping of graphene on a highly boron-doped silicon substrate was achieved by an annealing at 400 K for about 3 hours in an oven with air flow. With the same annealing, only the Raman features similar to that from the pristine graphene were observed in the freestanding graphene and the graphene on a typical Si/SiO2 wafer...
April 12, 2017: Nanotechnology
Amal Isaiah, Hisham Hamdan, Romaine F Johnson, Kamal Naqvi, Ron B Mitchell
Objectives (1) To describe the clinical, demographic and polysomnographic (PSG) characteristics of children with very severe obstructive sleep apnea (OSA) without significant comorbidities; (2) to assess the outcomes following tonsillectomy and adenoidectomy (T&A); and (3) to determine predictors of persistence of OSA after T&A. Study Design Case series with chart review. Setting Tertiary-level freestanding children's hospital. Subjects and Methods Seventy-four children aged 2 to 12 years who underwent T&A for very severe OSA (obstructive apnea-hypopnea index [AHI] >30) were included...
April 1, 2017: Otolaryngology—Head and Neck Surgery
Wei Sun, Grace Zhong, Christian Kübel, Abdinoor A Jelle, Chenxi Qian, Lu Wang, Manuchehr Ebrahimi, Laura M Reyes, Amr S Helmy, Geoffrey A Ozin
Germanium nanocrystals (ncGe) have not received as much attention as silicon nanocrystals (ncSi). However, Ge has demonstrated superiority over Si nanomaterials in some applications. Examples include, high charge-discharge rate lithium-ion batteries, small band-gap opto-electronic devices, and photo-therapeutics. When stabilized in an oxide matrix (ncGe/GeOx ), its high charge-retention has enabled non-volatile memories. It has also found utility as a high-capacity anode material for Li-ion batteries with impressive stability...
April 10, 2017: Angewandte Chemie
Kelly M Smith, Kali S Thomas, Shanthi Johnson, Hongdao Meng, Kathryn Hyer
OBJECTIVE: To examine the relationship between dietary service staff and dietary deficiency citations in nursing homes (NHs). METHOD: 2007-2011 Online Survey and Certification and Reporting data for 14,881 freestanding NHs were used to examine the relationship between dietary service staff and the probability of receiving a dietary service-related deficiency citation. An unconditional logit model with random effects was employed. RESULTS: Findings suggest that higher staffing levels for dietitians (odds ratio [OR] = ...
January 1, 2017: Journal of Applied Gerontology: the Official Journal of the Southern Gerontological Society
Xiuling Li, Xiao Cheng Zeng, Xiaojun Wu
Developing freestanding silicene nanostructures with tunable electronic and magnetic properties is of particular importance for their applications in nanoelectronics, but still faces big challenges. On the basis of first-principles calculations, here we predict that embedded silicene nanoflakes and nanoribbons can be realized by partly dehydrogenating a freestanding polysilane (Si6H6) sheet. Born-Oppenheimer molecular dynamics simulations indicate that the embedded silicene nanostructures show good thermal stability at 500 K...
April 19, 2017: Physical Chemistry Chemical Physics: PCCP
Soumya Murag, Cristie Suzukawa, Todd P Chang
BACKGROUND: Child life specialists (CLS) work with children directly to minimize long-term psychological sequelae of traumatic or medical events such as intravenous cannulation. There has been little done to measure how CLS impact outcomes of medical procedures. The objective of this study is to determine the impact of interventions by CLS upon successful attainment of intravenous (IV) cannulation among pediatric patients in the emergency department setting. METHOD: This was an eight month retrospective review within an urban tertiary-care freestanding pediatric Emergency Department (ED), using nursing and CLS documentation of ED patients younger than 21years who underwent IV cannulation...
April 1, 2017: Journal of Pediatric Nursing
Harriett Nelson, Sandra Mott
BACKGROUND: A freestanding quaternary pediatric hospital in New England has been facilitating parents' requests to take their child home or to a hospice facility from an Intensive Care Unit at end of life for the withdrawal of life sustaining measures for the past 16 years. However, knowledge of the aftermath of this decision was very limited. Before responding to a growing interest in making this service more available, an exploratory study was done to learn about the parents' perceptions of the experience over time...
May 2017: Dimensions of Critical Care Nursing: DCCN
Randall J Malchow, Rajnish K Gupta, Yaping Shi, Matthew S Shotwell, Lisa M Jaeger, Clifford Bowens
Objective.:  The authors investigated a wide range of perioperative outcome measures in the context of a robust regional anesthesia practice. Design.:  Comprehensive review of a prospectively collected six-year database. Setting.:  Freestanding, academic ambulatory surgery center. Subjects.:  There were 13,897 consecutive regional anesthetics in 10,338 patients. Methods.:  We investigated patient satisfaction, postoperative nausea and vomiting (PONV), postoperative pain, catheter analgesia, and complications...
March 24, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
Maria P Sousa, Sofia G Caridade, João F Mano
Inspired by native extracellular matrix (ECM) together with the multilevel architecture observed in nature, a material which topography recapitulates topographic features of the ECM and the internal architecture mimics the biological materials organization is engineered. The nanopatterned design along the XY plane is combined with a nanostructured organization along the Z axis on freestanding membranes prepared by layer-by-layer deposition of chitosan and chondroitin sulfate. Cellular behavior is monitored using two different mammalian cell lines, fibroblasts (L929) and myoblasts (C2C12), in order to perceive the response to topography...
March 29, 2017: Advanced Healthcare Materials
Kerui Li, Yuanlong Shao, Shiyi Liu, Qinghong Zhang, Hongzhi Wang, Yaogang Li, Richard B Kaner
Electrochemical capacitor systems based on Al ions can offer the possibilities of low cost and high safety, together with a three-electron redox-mechanism-based high capacity, and thus are expected to provide a feasible solution to meet ever-increasing energy demands. Here, highly efficient Al-ion intercalation into W18 O49 nanowires (W18 O49 NWs) with wide lattice spacing and layered single-crystal structure for electrochemical storage is demonstrated. Moreover, a freestanding composite film with a hierarchical porous structure is prepared through vacuum-assisted filtration of a mixed dispersion containing W18 O49 NWs and single-walled carbon nanotubes...
March 29, 2017: Small
Lizabeth D Martin, Eliot B Grigg, Shilpa Verma, Gregory J Latham, Sally E Rampersad, Lynn D Martin
The Institute of Medicine has called for development of strategies to prevent medication errors, which are one important cause of preventable harm. Although the field of anesthesiology is considered a leader in patient safety, recent data suggest high medication error rates in anesthesia practice. Unfortunately, few error prevention strategies for anesthesia providers have been implemented. Using Toyota Production System quality improvement methodology, a multidisciplinary team observed 133 h of medication practice in the operating room at a tertiary care freestanding children's hospital...
March 28, 2017: Paediatric Anaesthesia
Hong Wang, Shixiong Min, Qiang Wang, Debao Li, Gilberto Casillas, Chun Ma, Yangyang Li, Zhixiong Liu, Lain-Jong Li, Jiayin Yuan, Markus Antonietti, Tom Wu
Self-supported electrocatalysts being generated and employed directly as electrodes for energy conversion has been intensively pursued in the fields of materials chemistry and energy. Herein, we report a synthetic strategy to prepare freestanding hierarchically structured, nitrogen-doped nanoporous graphitic carbon membranes functionalized with Janus-type Co/CoP nanocrystals (termed as HNDCM-Co/CoP), which were successfully applied as a highly efficient, binder-free electrode in the hydrogen evolution reaction (HER)...
April 7, 2017: ACS Nano
Xiuxiu Yu, Ying Wang, Li Li, Hongbian Li, Yuanyuan Shang
Biomass materials are promising precursors for the production of carbonaceous materials due to their abundance, low cost and renewability. Here, a freestanding wrinkled carbon membrane (WCM) electrode material for flexible supercapacitors (SCs) was obtained from flower petal. The carbon membrane was fabricated by a simple thermal pyrolysis process and further activated by heating the sample in air. As a binder and current collector-free electrode, the activated wrinkled carbon membrane (AWCM) exhibited a high specific capacitance of 332...
March 31, 2017: Scientific Reports
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