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Michael L Callaham
No abstract text is available yet for this article.
September 19, 2017: Annals of Emergency Medicine
Jeremiah D Schuur, Donald M Yealy, Michael L Callaham
No abstract text is available yet for this article.
September 18, 2017: Annals of Emergency Medicine
Anastasiia B Petrova, Christoph Herold, Eugene P Petrov
Membrane-mediated interactions and aggregation of colloidal particles adsorbed to responsive elastic membranes are challenging problems relevant for understanding the microscopic organization and dynamics of biological membranes. We experimentally study the behavior of rodlike semiflexible fd virus particles electrostatically adsorbed to freestanding cationic lipid membranes and find that their behavior can be controlled by tuning the membrane charge and ionic strength of the surrounding medium. Three distinct interaction regimes of rodlike virus particles with responsive elastic membranes can be observed...
September 20, 2017: Soft Matter
Li-Ming Yang, Ariel B Ganz, Matthew Dornfeld, Eric Ganz
Recently, freestanding atomically thick Fe metal patches up to 10 atoms wide have been fabricated experimentally in tiny pores in graphene. This concept can be extended conceptually to extended freestanding monolayers. We have therefore performed ab initio molecular dynamics simulations to evaluate the early melting stages of platinum, silver, gold, and copper freestanding metal monolayers. Our calculations show that all four freestanding monolayers will form quasi-2D liquid layers with significant out-of-plane motion and diffusion in the plane...
December 2016: Condens Matter
Mallikarjuna Rettiganti, Kavisha M Shah, Jeffrey M Gossett, Joshua A Daily, Paul M Seib, Punkaj Gupta
PURPOSE: With increasing emphasis on high-quality care, we designed this study to evaluate the relationship between Magnet® recognition and patient outcomes in pediatric critical care. MATERIALS AND METHODS: Post hoc analysis of data from an existing administrative national database. We used inverse probability of treatment weighting and multivariate models to compare outcomes between two study groups after adjusting for confounding variables. RESULTS: A total of 823,634 pediatric patients from 41 centers were included...
September 5, 2017: Journal of Critical Care
Xiong-Wen David Lou
SeS2 shows attractive advantages beyond bare S and Se as a cathode material for lithium storage. Here, a freestanding lotus root-like carbon fiber network decorated with CoS2 nanoparticles (denoted as CoS2@LRC) has been designed and prepared as the SeS2 host for enhancing the lithium storage performance. The integrated electrode is constructed by three-dimensional interconnected multichannel carbon fibers, which can not only accommodate high content of SeS2 (70 wt.%), but also promise excellent electron and ion transport for achieving high capacity utilization of 1015 mAh g-1 at 0...
September 15, 2017: Angewandte Chemie
Byung Gee Im, Minjae Do, Yoojin Kim, Mira Cho, Jae-Hyung Jang
Biological naïve extracellular matrices (ECMs) exhibit anisotropic functions in their physical, chemical, and morphological properties. Representative examples include anisotropic skin layers or blood vessels simultaneously facing multiphasic environments. Here, anisotropically multifunctional structures called BiFACIAL (biomimetic freestanding anisotropic catechol-interfaces with asymmetrically layered) films were developed simply by contacting two polysaccharide solutions of heparin-catechol (Hep-C) and chitosan-catechol (Chi-C)...
September 14, 2017: ACS Applied Materials & Interfaces
Matthew Siow, Germaine Cuff, Jovan Popovic, Joseph Bosco
INTRODUCTION: The value proposition of surgery at freestanding ambulatory surgery centers (FSASCs) in terms of efficiency, safety, and patient satisfaction is well established and has led to increased FSASC utilization. However, there are comorbid conditions that disqualify certain patients from surgery at FSASCs. Understanding the percentage of patients whose comorbid conditions exclude them from FSASCs is important for the proper planning and utilization of operating room assets. We aim to understand the percentage of excluded patients, and we predict that certain procedures have higher rates of disqualification due to the types of patients who undergo them...
May 2017: Bulletin of the Hospital for Joint Diseases
Laura H Brower, Nathalie Kremer, Katie Meier, Christine Wolski, Molly M McCaughey, Emily McKenna, Jennifer Anadio, Emily Eismann, Erin E Shaughnessy
BACKGROUND AND OBJECTIVES: Pediatric hospital-acquired venous thromboembolism (VTE) is costly, has high morbidity, and is often preventable. The objective of this quality-improvement effort was to increase the percentage of general surgery and orthopedic patients ≥10 years of age screened for VTE risk from 0% to 80%. METHODS: At a freestanding children's hospital, 2 teams worked to implement VTE risk screening for postoperative inpatients. The general surgery team used residents and nurse practitioners to perform screening whereas the orthopedic team initially used bedside nursing staff...
September 12, 2017: Hospital Pediatrics
Laura H Brower, Erin E Shaughnessy, Ranjit S Chima
BACKGROUND: Pediatric hospital-acquired (HA) venous thromboembolism (VTE) is a vexing problem with improvement efforts hampered by lack of robust surveillance methods to establish accurate rates of HA-VTE. METHODS: At a freestanding children's hospital, a multidisciplinary team worked to develop a comprehensive surveillance strategy for HA-VTE. Starting with diagnosis codes, we implemented complementary detection methods, including clinical and radiology data, to develop a robust surveillance system...
September 12, 2017: Hospital Pediatrics
Dianmei Song, Jikui Zhu, Liying Xuan, Chenglan Zhao, Li Xie, Lingyun Chen
Freestanding two dimensional (2D) porous nanostructures have great potential in electrical energy storage. In the present work, we reported the first synthesis of two-dimensional (2D) β-Ni(OH)2 thin sheets (CQU-Chen-Ni-O-H-1) assembled by 3D nanoflake array as basic building units under acid condition by direct hydrothermal decomposition of the mixed solution of nickel nitrate (Ni(NO3)2) and acetic acid (CH3COOH, AA). The unique 3D nanoflake array assembled mesoporous 2D structures endow the thin sheets with a high specific capacitance of 1...
September 1, 2017: Journal of Colloid and Interface Science
Audrey M El-Gamil, Al Dobson, Nikolay Manolov, Joan E DaVanzo, Gerald A Beathard, Terry Foust Litchfield, Brook Cowin
INTRODUCTION: Advances in dialysis vascular access (DVA) management have changed where beneficiaries receive this care. The effectiveness, safety, quality, and economy of different care settings have been questioned. This study compares patient outcomes of receiving DVA services in the freestanding office-based center (FOC) to those of the hospital outpatient department (HOPD). It also examines whether outcomes differ for a centrally managed system of FOCs (CMFOC) compared to all other FOCs (AOFOC)...
September 2, 2017: Journal of Vascular Access
Lauri Hautala, Kari Jänkälä, Mikko-Heikki Mikkelä, Paavo Turunen, Nønne L Prisle, Minna Patanen, Maxim Tchaplyguine, Marko Huttula
Concentration dependent solvation of RbBr in freestanding sub-2 nm water clusters was studied using core level photoelectron spectroscopy with synchrotron radiation. Spectral features recorded from dilute to saturated clusters indicate that either solvent shared or contact ion pairs are present in increasing amount when the concentration exceeds 2 mol kg(-1). For comparison, spectra from anhydrous RbBr clusters are also presented.
September 20, 2017: Physical Chemistry Chemical Physics: PCCP
Bryan Wimer, Christopher Pan, Tim Lutz, Mat Hause, Chris Warren, Ren Dong, Sherry Xu
Mast Climbing Work Platforms (MCWPs) are becoming more common at construction sites and are being used as an alternative to traditional scaffolding. Although their use is increasing, little to no published information exists on the potential safety hazards they could pose for workers. As a last line of defense, a personal fall-arrest system can be used to save a worker in a fall incident from the platform. There has been no published information on whether it is safe to use such a personal fall-arrest system with MCWPs...
September 2017: Journal of Safety Research
Sherry A Glied, Stuart H Altman
The United States relies on competition to balance costs and quality in the health care system. But concentration is increasing throughout the hospital, physician, and insurer markets. Midsize community hospitals face declining demand and growing competition from both larger hospitals and smaller freestanding diagnostic and surgical centers, leaving the midsize hospitals vulnerable to closure or merger with other facilities. Competition among insurers has been limited by the development of hospital systems that extend the bargaining power of "must-have" hospitals (those perceived to provide the best care for complex and less common conditions) across local health care markets...
September 1, 2017: Health Affairs
Kari A Simonsen, Amber R Phipps, Mel Hall, Brenda Heybrock, Lindsay Hegemann, Debra Arnow
The 2014-2016 West Africa Ebola outbreak led US hospitals to prepare to treat Ebola patients, with significant attributable costs. A nationwide preparedness transition to a tiered approach allowed regional allocation of preparedness resources for Ebola frontline, assessment, and treatment hospitals. Preparedness costs for assessment centers were significant and largely uncompensated. Infect Control Hosp Epidemiol 2017;1-3.
September 6, 2017: Infection Control and Hospital Epidemiology
Takafumi Miyanaga, Takashi Azuhata, Kiyofumi Nitta, Shigefusa F Chichibu
The local structure around In atoms in an m-plane In0.06Ga0.94N film coherently grown on a freestanding m-plane GaN substrate was investigated by polarization-dependent X-ray absorption fine-structure. A step-by-step fitting procedure was proposed for the m-plane wurtzite structure. The interatomic distance for the first nearest neighbour In-N atomic pairs was almost isotropic. For the second nearest In-Ga pairs, the interatomic distances along the m- and a-axes were longer and shorter, respectively, than that in strain-free virtual crystals as expected for the m-plane compressive strain...
September 1, 2017: Journal of Synchrotron Radiation
Jéssica E S Fonsaca, Sergio H Domingues, Elisa S Orth, Aldo J G Zarbin
The greatest challenge regarding black phosphorus (BP) comes as a result of its fast degradation when exposed to ambient conditions, which has overshadowed its applications. Herein, we report a simple and efficient route towards overcoming BP deterioration by preparing a nanocomposite with the conducting polymer polyaniline (PANI). The liquid/liquid interfacial method was employed to produce transparent, freestanding and transferable thin film of BP covered by PANI, with high stability under ambient atmosphere, up to 60 days...
August 31, 2017: Scientific Reports
Yuqiang Jin, Haocheng Yuan, Jin-Le Lan, Yunhua Yu, Yuan-Hua Lin, Xiaoping Yang
High gravimetric energy density and volumetric energy density energy storage devices are highly desirable due to the rapid development of electric vehicles, and portable and wearable electronic equipment. Electrospinning is a promising technology for preparing freestanding electrodes with high gravimetric and volumetric energy density. However, the energy density of the traditional electrospun electrodes is restricted by the low mass loading of active materials (e.g. 20%-30 wt%). Herein, a biomimetic strategy inspired by the phenomenon of the sticky spider web is demonstrated as a high performance anode, which simultaneously improves the gravimetric and volumetric energy density...
September 14, 2017: Nanoscale
Mengfei Wang, Yannian Li, Hiroshi Yokoyama
Disclinations are topological singularities of molecular arrangement in liquid crystals, which typically occur when the average orientation of molecules makes a π rotation along a fictitious closed loop taken inside the liquid crystal. Depending on the sense of molecular rotation, the disclination lines are either of 1/2 or -1/2 strength. When two disclination lines with the opposite strength meet, they are annihilated without trace. It is hence generally considered difficult in the nematic phase to stabilize a condensed array of free-standing disclination lines without the aid of topological objects like colloidal inclusions...
August 30, 2017: Nature Communications
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