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https://www.readbyqxmd.com/read/28532061/wound-healing-effect-of-bioactive-ion-released-from-mg-smectite
#1
Yu Sasaki, Gulsan Ara Sathi, Osamu Yamamoto
Bioactive ions like Mg(2+) and Si(4+) have been known as promotion factors of tissue regeneration. In the present work, Mg-smectite, consisting of Mg(2+) and Si(4+) ions, was synthesized by a solution process, and evaluated for the efficiency of the powder on wound healing in rats. White precipitates were obtained by mixing a magnesium chloride hexahydrate solution and a sodium silicate hexahydrate solution at room temperature. The precipitates mixed with a NaOH aqueous solution were subjected to hydrothermal reaction, and finally crystalline Mg-smectite powder was obtained...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532016/electrochemical-preparation-of-two-nanostructured-poly-sulfosalicylic-acid-films-with-different-morphologies-and-properties-for-selective-sensing-of-dopamine-comparative-study
#2
Juan Zhang, Jun-Ping Zhou, Xiao-Hui Dai, Guang-Zhou Liu, Shu-Yong Zhang
Two nanostructured poly(sulfosalicylic acid) (PSA) films were synthesized from room temperature ionic liquid (RTIL) or aqueous solution on a glassy carbon electrode (GCE) via potentiodynamic electropolymerization. The morphology and properties of the PSA films were characterized with scanning electron microscopy (SEM), scanning probe microscopy (SPM), electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). It was found that solvent had a major influence on the morphology and electrochemical properties of the resultant PSA films...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531993/fabrication-mechanical-properties-and-in-vitro-degradation-behavior-of-newly-developed-znag-alloys-for-degradable-implant-applications
#3
M Sikora-Jasinska, E Mostaed, A Mostaed, R Beanland, D Mantovani, M Vedani
Zn and Zn-based alloys have been recognized as highly promising biodegradable materials for orthopedic implants and cardiovascular stents, due to their proved biocompatibility and, more importantly, lower corrosion rates compared to Mg alloys. However, pure Zn has poor mechanical properties. In this study, Ag is used as a promising alloying element to improve the mechanical properties of the Zn matrix as well as its biocompatibility and antibacterial properties. Accordingly, we design three ZnAg alloys with Ag content ranging from 2...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531648/cationic-surfactant-blocks-radical-inhibiting-sites-on-silica
#4
Tan Zhang, Frank D Blum
Surfactant-catalyzed room-temperature radical polymerization of methyl methacrylate (MMA) was conducted in the presence of fumed silica nanoparticles and water. Three types of surfactants, cationic (CTAB), nonionic (Triton X-100) or anionic (SDS), were used to catalyze the decomposition of the initiator, 2,2'-azobisisobutyronitrile (AIBN). The surfactant-catalyzed decomposition rate constant for AIBN at room temperature was found to be independent of the surfactant type. However, the rates of polymerization of the MMA emulsion gels at room temperature were found to depend on the types of surfactant with: cationic>nonionic>anionic...
May 12, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28531349/low-temperature-pm-irras-of-a-monolayer-on-au-peculiarities-in-the-spectra-of-c18d37sh
#5
Milan Mašát, Jin Wen, Zdenek Sofer, Josef Michl
We describe an experimental setup suitable for the measurement of photomodulated IR reflection/absorption spectra of monolayers on a flat gold substrate at temperatures from room to 14 K. Results obtained for a monolayer of C18D37SH on gold are shown and compared with IR spectra of C18D37SH in a KBr pellet at these temperatures. Band widths are reduced by only about 10%, but upon cooling below 100 - 150 K, the frequencies and intensities of νas(CD3) and νas(CD2) bands in the C-D stretching region in both types of spectra undergo dramatic reversible changes of unknown origin...
May 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28530775/a-surgical-approach-to-iatrogenic-vascular-injuries-in-pediatric-cases
#6
Yüksel Beşir, Orhan Gökalp, Börteçin Eygi, Banu Bahriye Lafcı, Gamze Gökalp, Levent Yılık, Hasan İner, Ali Gürbüz
BACKGROUND: Surgical intervention is mandatory in many children who present with vascular trauma or in complicated cases after medical interventions. In this study, surgical interventions applied after vascular injuries in children were analyzed. METHODS: Between January 2002 and December 2012, 17 patients (aged under 18) who were admitted to the emergency room with vascular injuries were retrospectively analyzed. The data was collected through hospital records...
May 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28530512/deaflympians-satisfaction-with-athletic-training-services-at-the-2013-deaflympic-summer-games
#7
Matthew Paul Brancaleone, René Revis Shingles, Nailya DeLellis
CONTEXT:   Athletic trainers have the opportunity to treat unique populations. Determining athletes' satisfaction with the athletic training services supplied can offer insights into how to improve the health care provided to athletes. OBJECTIVE:   To explore Deaflympians' satisfaction with athletic training services at the 2013 Deaflympic Summer Games. DESIGN:   Cross-sectional survey. SETTING:   The 2013 Deaflympic Summer Games in Sofia, Bulgaria...
May 22, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28530405/novel-carrier-doping-mechanism-for-transparent-conductor-electron-donation-from-embedded-ag-nanoparticles-to-the-oxide-matrix
#8
Po-Shun Huang, Fen Qin, Ziye Xiong, Hyunwoo Shim, Tongchuan Gao, Paul W Leu, Jung-Kun Lee
A tradeoff between the carrier concentration and the carrier mobility is an inherent problem of traditional transparent conducting oxide (TCO) films. In this study, we demonstrate that the electron concentration of TCO film can be increased without deteriorating the carrier mobility by embedding Ag nanoparticles (NPs) into Al-doped ZnO (AZO) films. An increment of Ag NP content up to 0.7 vol% in the AZO causes the electron concentration rising from 2 × 1019 to 4 × 1020 cm-3. A dependence of the conductivity on temperature suggests that the thermal activation energy of this electron donation from Ag NPs is similar to the Schottky barrier height at the Ag-AZO interface that is a difference between work function of Ag and electron affinity of the AZO...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28530400/probing-the-conformation-dependent-preferential-binding-of-ethanol-to-cationic-glycylalanylglycine-in-water-ethanol-by-vibrational-and-nmr-spectroscopy
#9
David DiGuiseppi, Bridget J Milorey, Gabrielle Lewis, Nina Kubatova, Stefanie Farrell, Harald Schwalbe, Reinhard Schweitzer-Stenner
The conformational propensity of amino acid residues is determined by an intricate balance of peptide-solvent and solvent-solvent interactions. In order to explore how the systematic replacement of water by a cosolvent affects the solvation of both amino acid backbone and side chains we, performed a combined vibrational spectroscopy and NMR study of cationic glycylalanylglycine (GAG) in different ethanol/water mixtures between 0 and 42 mole percent of ethanol. The classical model peptide N'-methylacetamide was used as a reference system to probe solvent-induced spectroscopic changes...
May 22, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28530344/-suppression-of-a-non-trauma-related-threatening-thought-as-an-avoidance-strategy-in-post-traumatic-stress-disorder-patients
#10
Lilach Abramsky-Arazi, Zeev Kaplan, Hagit Cohen
AIMS: Our goal was to examine how suppression of nontrauma- related thoughts differs between PTSD patients and patients with non-PTSD anxiety disorder compared to a group of matched controls. BACKGROUND: Intrusive recollections of aspects of the traumatic event and its sequelae are at the core of the post-traumatic stress disorder (PTSD). People who have suffered a traumatic event may implement some form of avoidance coping strategies in order to deal with the unwanted memories that accompany them...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28530341/-measuring-the-effect-of-multi-sensory-stimulation-in-the-snoezelen-room-on-sleep-quality-of-alzheimer-patients-using-actigraph
#11
Doron Todder, Meital Levartovsky, Tzvi Dwolatzky
BACKGROUND: The most common cause of dementia is Alzheimer's disease. The major manifestation of the disease is the cognitive impairment which appears at the onset of the disease. In addition to the cognitive impairment there are behavioral dysfunctions such as apathy, anxiety, depression and sleep disturbances. The treatment for the manifestations of Alzheimer is currently pharmacological and behavioral. One of the newest behavioral treatments for Alzheimer is the multi-sensory treatment using the Snoezelen room...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28530314/-presentation-of-ocular-problems-among-displaced-persons-from-sudan-and-eritrea-at-the-tel-aviv-medical-center
#12
Roy Schwartz, Michaella Goldstein, Anat Loewenstein, Adiel Barak
INTRODUCTION: Illegal immigration from Africa to Israel expanded in recent years, bringing illegal immigrants, mostly from Eritrea and Sudan. No data regarding the ophthalmic conditions of this population was previously published. AIMS: To delineate reasons for ophthalmologic emergency room visits and hospitalizations in the ophthalmology department at a tertiary center in Tel Aviv, Israel. METHODS: In this retrospective study we reviewed the records of patients of Eritrean and Sudanese origin arriving at the ophthalmic emergency room at the Tel Aviv Sourasky Medical Center between June 2012 and August 2012 and hospitalized in the ophthalmology ward between August 2011 and August 2012...
January 2017: Harefuah
https://www.readbyqxmd.com/read/28530102/manipulating-coherent-plasmon-exciton-interaction-in-single-silver-nanorod-on-monolayer-wse2
#13
Di Zheng, Shunping Zhang, Qian Deng, Meng Kang, Peter Nordlander, Hongxing Xu
Strong coupling between plasmons and excitons in nanocavities can result in the formation of hybrid plexcitonic states. Understanding the dispersion relation of plexcitons is important both for fundamental quantum science and for applications including optoelectronics and nonlinear optics devices. The conventional approach, based on statistics over different nanocavities suffers from large inhomogeneities from the samples, owing to the non-uniformity of nanocavities and the lack of control over the locations and orientations of the excitons...
May 22, 2017: Nano Letters
https://www.readbyqxmd.com/read/28530068/-newborn-discharge-letter-as-a-communication-document-for-continuity-of-care
#14
Jacob Urkin, Zachi Grossman, Gil Chapnick, Daniella Landau
AIMS: To check information items in newborn discharge letters from various delivery rooms and compare them to the expectations of community pediatricians. BACKGROUND: The newborn discharge letter is the document that supports the transition of care from the hospital stay to life at home and in the community. It usually summarizes medical information related to the baby's family, maternal pregnancies, delivery and the stay in hospital until discharge. It is primarily a communication tool between healthcare professionals...
November 2016: Harefuah
https://www.readbyqxmd.com/read/28529888/simultaneous-streptococcus-pneumoniae-empyema-in-fraternal-twins
#15
Alvaro E Galvis, Sana Kamboj, Craig Nakamura
Streptococcus pneumoniae is the most common bacterial cause of community acquired pneumonia. The current trend in Streptococcus pneumoniae infections has been the rise of multi-drug resistance in the last two decades. We present the case of a pair of 16-month old African-American fraternal twins who presented to the emergency room on the same day for symptoms consistent with pneumonia. Upon further examination, the twins showed remarkably similar symptoms, and cultures revealed penicillin-resistant Streptococcus pneumoniae in both twins...
2017: IDCases
https://www.readbyqxmd.com/read/28529842/an-environmental-transfer-hub-for-multimodal-atom-probe-tomography
#16
Daniel E Perea, Stephan S A Gerstl, Jackson Chin, Blake Hirschi, James E Evans
Environmental control during transfer between instruments is required for samples sensitive to air or thermal exposure to prevent morphological or chemical changes prior to analysis. Atom probe tomography is a rapidly expanding technique for three-dimensional structural and chemical analysis, but commercial instruments remain limited to loading specimens under ambient conditions. In this study, we describe a multifunctional environmental transfer hub allowing controlled cryogenic or room-temperature transfer of specimens under atmospheric or vacuum pressure conditions between an atom probe and other instruments or reaction chambers...
2017: Advanced Structural and Chemical Imaging
https://www.readbyqxmd.com/read/28529799/new-m-m-3-arsenates-the-framework-structures-of-agm-3-haso4-2-m-3-al-ga-and-m-gaas2o7-m-na-ag
#17
Karolina Schwendtner, Uwe Kolitsch
The crystal structures of hydro-thermally synthesized silver(I) aluminium bis-[hydrogen arsenate(V)], AgAl(HAsO4)2, silver(I) gallium bis-[hydrogen arsenate(V)], AgGa(HAsO4)2, silver gallium diarsenate(V), AgGaAs2O7, and sodium gallium diarsenate(V), NaGaAs2O7, were determined from single-crystal X-ray diffraction data collected at room temperature. The first two compounds are representatives of the MCV-3 structure type known for KSc(HAsO4)2, which is characterized by a three-dimensional anionic framework of corner-sharing alternating M(3+)O6 octa-hedra (M = Al, Ga) and singly protonated AsO4 tetra-hedra...
May 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28529779/crystal-structures-of-di-bromido-n-pyridin-2-yl-%C3%AE%C2%BAn-methyl-idene-picolinohydrazide-%C3%AE%C2%BA-2-n-o-cadmium-methanol-monosolvate-and-di-iodido-n-pyridin-2-yl-%C3%AE%C2%BAn-methyl-idene-picolinohydrazide-%C3%AE%C2%BA-2-n-o-cadmium
#18
Ali Akbar Khandar, Farhad Akbari Afkhami, Harald Krautscheid, Kenneth Aase Kristoffersen, Zeliha Atioğlu, Mehmet Akkurt, Carl Henrik Görbitz
The title compounds, [CdBr2(C12H10N4O)]·CH3OH, (I), and [CdI2(C12H10N4O)], (II), are cadmium bromide and cadmium iodide complexes of the ligand (E)-N'-(pyridin-2-yl-methyl-ene)picolinohydrazide. Complex (I) crystallizes as the methanol monosolvate. In both compounds, the Cd(2+) cation is ligated by one O atom and two N atoms of the tridentate ligand, and by two bromide anions forming a Br2N2O penta-coordination sphere for (I), and by two iodide anions forming an I2N2O penta-coordination sphere for (II), both with a distorted square-pyramidal geometry...
May 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28529463/nutrition-practices-and-knowledge-among-ncaa-division-iii-football-players
#19
Elizabeth Lea Abbey, Cynthia Joy Wright, Christina M Kirkpatrick
BACKGROUND: Participation in collegiate American football is physically demanding and may have long-term health implications, particularly in relation to cardiovascular and neurological health. National Collegiate Athletic Association (NCAA) Division III (DIII) football players are a relatively unstudied population, particularly in terms of their dietary habits and knowledge. The aim of the present study was to descriptively evaluate the dietary intake of DIII football players including a subset of linemen and assess the nutritional knowledge and sources of information of these athletes...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28529399/modeling-high-school-timetabling-with-bitvectors
#20
Emir Demirović, Nysret Musliu
High school timetabling (HSTT) is a well known and wide spread problem. The problem consists of coordinating resources (e.g. teachers, rooms), times, and events (e.g. lectures) with respect to various constraints. Unfortunately, HSTT is hard to solve and just finding a feasible solution for simple variants of HSTT has been proven to be NP-complete. We propose a new modeling approach for HSTT using bitvectors in which constraint costs of the general HSTT can be calculated using bit operations. This model allows efficient computation of constraint costs making it useful when implementing HSTT algorithms...
2017: Annals of Operations Research
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