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https://www.readbyqxmd.com/read/29341795/the-ability-to-provide-quality-chest-compressions-over-lacrosse-shoulder-pads
#1
Richard J Boergers, Thomas G Bowman, Monica Lininger
CONTEXT:   Performance of quality cardiopulmonary resuscitation is essential for improving patient outcomes. Performing compressions over football equipment inhibits compression depth and rate, but lacrosse equipment has not yet been studied. OBJECTIVE:   To assess the effect of lacrosse shoulder pads on the ability to provide quality chest compressions on simulation manikins. DESIGN:   Crossover study. SETTING:   Simulation laboratory...
January 17, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29341759/crossover-from-classical-to-fermi-liquid-behavior-in-dense-plasmas
#2
Jérôme Daligault
We explore the crossover from classical plasma to quantum Fermi liquid behavior of electrons in dense plasmas. To this end, we analyze the evolution with density and temperature of the momentum lifetime of a test electron introduced in a dense electron gas. This allows us (1) to determine the boundaries of the crossover region in the temperature-density plane and to shed light on the evolution of scattering properties across it, (2) to quantify the role of the fermionic nature of electrons on electronic collisions across the crossover region, and (3) to explain how the concept of the Coulomb logarithm emerges at a high enough temperature but disappears at a low enough temperature...
July 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341730/polymer-chain-conformation-and-dynamical-confinement-in-a-model-one-component-nanocomposite
#3
C Mark, O Holderer, J Allgaier, E Hübner, W Pyckhout-Hintzen, M Zamponi, A Radulescu, A Feoktystov, M Monkenbusch, N Jalarvo, D Richter
We report a neutron-scattering investigation on the structure and dynamics of a single-component nanocomposite based on SiO_{2} particles that were grafted with polyisoprene chains at the entanglement limit. By skillful labeling, we access both the monomer density in the corona as well as the conformation of the grafted chains. While the corona profile follows a r^{-1} power law, the conformation of a grafted chain is identical to that of a chain in a reference melt, implying a high mutual penetration of the coronas from different particles...
July 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341641/simultaneous-deep-tunneling-and-classical-hopping-for-hydrogen-diffusion-on-metals
#4
Wei Fang, Jeremy O Richardson, Ji Chen, Xin-Zheng Li, Angelos Michaelides
Hydrogen diffusion on metals exhibits rich quantum behavior, which is not yet fully understood. Using simulations, we show that many hydrogen diffusion barriers can be categorized into those with parabolic tops and those with broad tops. With parabolic-top barriers, hydrogen diffusion evolves gradually from classical hopping, to shallow tunneling, to deep tunneling as the temperature (T) decreases, and noticeable quantum effects persist at moderate T. In contrast, with broad-top barriers quantum effects become important only at low T and the classical-to-quantum transition is sharp, at which classical hopping and deep tunneling both occur...
September 22, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341077/assessing-use-errors-related-to-the-interface-design-of-electrosurgical-units
#5
Jamie L Estock, Airan Li, Maureen C Casey, Matthew A Taylor, Monique Y Boudreaux-Kelly, Martin D Choma, Katrina Jacobs, David E Eibling
Medical device use errors, such as instrument connection errors made with electrosurgical units (ESUs), can lead to adverse events. Current device acquisition processes at health care facilities do not typically include a proactive evaluation of use-error risk before device purchase. We conducted an evaluation to identify ESU user interface design features that can help prevent or mitigate instrument connection errors during clinical care. Thirty-six current ESU users participated in the evaluation. We used a randomized crossover design in which each participant used two ESU models in a simulated OR scenario...
January 2018: AORN Journal
https://www.readbyqxmd.com/read/29340382/tuning-the-indirect-direct-band-gap-transition-in-the-mos2-xsex-armchair-nanotube-by-diameter-modulation
#6
Hong-Hui Wu, Qiangqiang Meng, He Huang, C T Liu, Xun-Li Wang
The application of the reported armchair transition-metal dichalcogenide (MoS2, MoTe2, MoSTe and WS2, etc.) nanotube is hindered for the optoelectronic devices due to the indirect band gap. By using first-principles calculations, the electronic structures of MoS2-xSex single-wall armchair nanotubes with respect to different diameters are investigated. The MoS2 armchair nanotube exhibits an indirect band gap as a function of nanotube diameters from 10 Å to 50 Å, whereas MoSSe and MoSe2 exhibit a surprising diameter-induced indirect-direct band gap crossover at the diameters of 25 Å and 33 Å, respectively...
January 17, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29340321/randomized-clinical-trial-design-to-assess-abatacept-in-resistant-nephrotic-syndrome
#7
Howard Trachtman, Debbie S Gipson, Michael Somers, Cathie Spino, Sharon Adler, Lawrence Holzman, Jeffrey B Kopp, John Sedor, Sandra Overfield, Ayanbola Elegbe, Michael Maldonado, Anna Greka
Introduction: Treatment-resistant nephrotic syndrome is a rare form of glomerular disease that occurs in children and adults. No Food and Drug Administration-approved treatments consistently achieve remission of proteinuria and preservation of kidney function. CD80 (B7-1) can be expressed on injured podocytes, and administration of abatacept (modified CTLA4-Ig based on a natural ligand to CD80) has been associated with sustained normalization of urinary protein excretion and maintenance of glomerular filtration rate in experimental and clinical settings...
January 2018: KI Reports
https://www.readbyqxmd.com/read/29340297/acetic-acid-guided-biopsies-in-barrett-s-surveillance-for-neoplasia-detection-versus-non-targeted-biopsies-seattle-protocol-a-feasibility-study-for-a-randomized-tandem-endoscopy-trial-the-abba-study
#8
Fergus Chedgy, Carole Fogg, Kesavan Kandiah, Hugh Barr, Bernard Higgins, Mimi McCord, Ann Dewey, John De Caestecker, Lisa Gadeke, Clive Stokes, David Poller, Gaius Longcroft-Wheaton, Pradeep Bhandari
Background and study aims : Barrett's esophagus is a potentially pre-cancerous condition, affecting 375,000 people in the UK. Patients receive a 2-yearly endoscopy to detect cancerous changes, as early detection and treatment results in better outcomes. Current treatment requires random mapping biopsies along the length of Barrett's, in addition to biopsy of visible abnormalities. As only 13 % of pre-cancerous changes appear as visible nodules or abnormalities, areas of dysplasia are often missed...
January 2018: Endoscopy International Open
https://www.readbyqxmd.com/read/29339966/acute-diesel-exhaust-exposure-and-postural-stability-a-controlled-crossover-experiment
#9
Jason Curran, Rachel Cliff, Nadine Sinnen, Michael Koehle, Chris Carlsten
Recent epidemiological evidence connects ambient air pollutants to adverse neurobehavioural effects in adults. In animal models, subchronic controlled exposures to diesel exhaust (DE) have also showed evidence of neuroinflammation. Evidence suggests that DE not only affects outcomes commonly associated with cognitive dysfunction, but also balance impairment. We conducted a controlled human exposure experiment with 28 healthy subjects (average age = 28 years (SD = 7.1; range = 21-49); and 40% female) who were exposed to two conditions, filtered air (FA) and DE (300 μg PM2...
2018: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/29339109/bitter-gourd-reduces-elevated-fasting-plasma-glucose-levels-in-an-intervention-study-among-prediabetics-in-tanzania
#10
Michael B Krawinkel, Christine Ludwig, Mark E Swai, Ray-Yu Yang, Kwok Pan Chun, Sandra D Habicht
ETHNOPHARMACOLOGICAL RELEVANCE: Impaired glucose tolerance and diabetes mellitus have become major health issues even in non-industrialized countries. As access to clinical management is often poor, dietary interventions and alternative medicines are required. For bitter gourd, Momordica charantia L., antidiabetic properties have been claimed. AIM OF THE STUDY: The main objective of the intervention study was to assess antidiabetic effects of daily bitter gourd consumption of 2...
January 12, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29339035/the-effect-of-dietary-carbohydrate-on-gastroesophageal-reflux-disease
#11
Keng-Liang Wu, Chung-Mou Kuo, Chih-Chien Yao, Wei-Chen Tai, Seng-Kee Chuah, Chee-Sang Lim, Yi-Chun Chiu
BACKGROUND: Acid changes in gastroesophageal reflux with vary component in the food have less been studied, especially carbohydrate. We plan to clarify the effect of different carbohydrate density on low esophageal acid and reflux symptoms of patients with gastroesophgeal reflux disease. METHODS: Twelve patients (52 ± 12 years old; five female) with gastroesophageal reflux disease were recruited for the prospective crossover study. Each patient was invited for panendoscope, manometry and 24 h pH monitor...
January 12, 2018: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/29337831/the-acute-effects-of-a-caffeine-containing-supplement-on-anaerobic-power-and-subjective-measurements-of-fatigue-in-recreationally-active-males
#12
Chelsea J Hahn, Andrew R Jagim, Clayton L Camic, Matthew J Andre
Studies show mixed results for the effects of caffeine on performance, warranting further investigation. The purpose of this study was to examine the acute effects of a caffeine-containing supplement on anaerobic power and subjective measurements of fatigue during resisted sprinting on males. Fourteen recreationally-active males [N=14; (mean±SD), age: 21.0±0.7 yrs., height: 178.5±5.1 cm, weight: 77.3±9.6 kg, percent body fat: 12.6±4.8%] participated in a double-blind, placebo controlled, within-subjects crossover design study...
January 4, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29337730/effects-of-electrical-transcutaneous-vagus-nerve-stimulation-on-the-perceived-intensity-of-repetitive-painful-heat-stimuli-a-blinded-placebo-and-sham-controlled-randomized-crossover-investigation
#13
Henriette Janner, Catharina Klausenitz, Nancy Gürtler, Klaus Hahnenkamp, Taras I Usichenko
BACKGROUND: Transcutaneous vagus nerve stimulation (TVNS) is a promising treatment for acute and chronic pain. However, experimental studies yielded controversial results. We examined if TVNS reduces the perceived intensity of repetitive painful heat stimulation and temporal summation of pain (TSP) in healthy volunteers in comparison with placebo and sham stimulation, as well as no intervention. METHODS: In 4 sessions, 90 heat pulse stimuli at individual pain tolerance temperature were applied to the ventral forearm of 49 healthy volunteers (25 women) using a Contact Heat Evoked Potential Stimulator thermode (Medoc, Ramat Yishai, Israel)...
January 15, 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29336615/pharmacokinetic-bioequivalence-safety-and-acceptability-of-ornibel%C3%A2-a-new-polymer-composition-contraceptive-vaginal-ring-etonogestrel-ethinylestradiol-11-00-3-474%C3%A2-mg-compared-with-nuvaring%C3%A2-etonogestrel-ethinylestradiol-11-7-2-7%C3%A2-mg
#14
Jaime Algorta, Maria Diaz, Raquel de Benito, Marc Lefebvre, Eric Sicard, Milton Furtado, Pedro Antonio Regidor, Celestino Ronchi
OBJECTIVE: To show the clinical development of Ornibel® (ExeltisHealthcare, Spain) a contraceptive vaginal ring manufactured with a new polymer composition and containing etonogestrel/ethinylestradiol, compared to Nuvaring® (MSD, Spain). SUBJECTS AND METHODS: Randomised, single dose, 2-period, 2-sequence, 2-stage crossover, comparative bioavailability study conducted in 40 healthy female subjects. All subjects received both treatments for 28 days in each of two periods, separated by a 28 days washout...
January 16, 2018: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/29336572/-hg-scn-3-2-%C3%AE-l-2-an-efficient-secondary-building-unit-for-the-synthesis-of-2d-iron-ii-spin-crossover-coordination-polymers
#15
Daopeng Zhang, Francisco Javier Valverde-Muñoz, Carlos Bartual-Murgui, Lucía Piñeiro-López, M Carmen Muñoz, José Antonio Real
We report an unprecedented series of two-dimensional (2D) spin-crossover (SCO) heterobimetallic coordination polymers generically formulated as {FeII[(HgII(SCN)3)2](L)x}·Solv, where x = 2 for L = tvp (trans-(4,4'-vinylenedipyridine)) (1tvp), bpmh ((1E,2E)-1,2-bis(pyridin-4-ylmethylene)hydrazine) (1bpmh·nCH3OH; n = 0, 1), bpeh ((1E,2E)-1,2-bis(1-(pyridin-4-yl)ethylidene)hydrazine) (1bpeh·nH2O; n = 0, 1) and x = 2.33 for L = bpbz (1,4-bis(pyridin-4-yl)benzene) (1bpbz·nH2O; n = 0, 2/3). The results confirm that self-assembly of FeII, [HgII(SCN)4]2-, and ditopic rodlike bridging ligands L containing 4-pyridyl moieties favors the formation of linear [Fe(μ-L)]n2n+ chains and in situ generated binuclear units {[HgII(SCN)3]2(μ-L)}2-...
January 16, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29335385/a-transradial-approach-of-cardiac-catheterization-for-patients-on-dialysis
#16
Toshiki Kuno, Keita Hirano, Syohei Imaeda, Kenji Hashimoto, Toshinobu Ryuzaki, Tetsuya Saito, Hiroyuki Yamazaki, Ryota Tabei, Masaki Kodaira, Yohei Numasawa
BACKGROUND: Periprocedural bleeding is associated with increased risk of early mortality during percutaneous coronary intervention (PCI), especially in patients on dialysis. A transradial approach (TRA) should be considered for these patients; however, PCI operators avoid this approach because of the risk of radial artery occlusion (RAO). The aim of this study is to construct a TRA system and clarify its safety in patients on dialysis. METHODS: Eighty-eight consecutive patients on dialysis who underwent cardiac catheterization were prospectively included in this study and divided according to the access site into either the TRA group or the transfemoral approach (TFA) group...
January 15, 2018: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29334437/a-randomized-clinical-trial-to-measure-the-erosion-protection-benefits-of-a-novel-stabilized-stannous-fluoride-dentifrice-versus-a-control-dentifrice
#17
Xinyi Zhao, Tao He, Yanyan He, Cathy Cheng, Haijing Chen
OBJECTIVES: The aim of this investigation was to assess the erosion protection ability of a novel stabilized stannous fluoride (SnF2) dentifrice and a control sodium fluoride dentifrice (NaF) using a well-credentialed human in situ model. METHODS: A novel smooth texture 0.454% stabilized SnF2 dentifrice (Crest® Pro-Health™ smooth formula) and a 0.23% NaF marketed control dentifrice with 5% potassium nitrate (Sensodyne® Pronamel®) were compared in a 10-day, single center, randomized, controlled, double-blind, two-treatment, three-period crossover in situ clinical trial...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334040/botulinum-toxin-type-a-for-pain-in-advanced-parkinson-s-disease
#18
Veronica Bruno, Maria Eliza Freitas, Deborah Mancini, Jane P Lui, Janis Miyasaki, Susan H Fox
Background and Objective Pain is a frequent symptom in Parkinson's disease (PD), and the therapeutic alternatives are scarce. The goal of this trial was to measure the effects of botulinum toxin type A (BTXA) in the treatment of limb pain in advanced PD. Methods A randomized double-blind crossover versus placebo study of BTXA for limb pain in advanced Parkinson's disease was conducted. Subjects received individualized BTXA/placebo dosing per pain distribution in limbs. The primary outcome was a measure of change in global pain on a numeric rating scale (NRS) at 4 and 12 weeks postinjection and on a visual analogue scale 12 weeks after treatment...
January 2018: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/29332743/myoeletric-indices-of-fatigue-adopting-different-rest-intervals-during-leg-press-sets
#19
Humberto Miranda, Marianna Maia, Carlos G de Oliveira, Déborah Farias, Jurandir B da Silva, Vicente P Lima, Jeffrey M Willardson, Gabriel A Paz
INTRODUCTION: The purpose of this study was to examine the acute effect of different rest intervals between multiple sets of the 45° angled leg press exercise (LP45) on surface electromyographic (SEMG) spectral and amplitude indices of fatigue. METHODS: Fifteen recreationally trained females performed three protocols in a randomized crossover design; each consisting of four sets of 10 repetitions with 1 (P1), 3 (P3), or 5 (P5) minute rest intervals between sets...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29332677/pilot-study-of-sleep-and-meal-timing-effects-independent-of-sleep-duration-and-food-intake-on-insulin-sensitivity-in-healthy-individuals
#20
Theresa Pizinger, Kyle Kovtun, Arindam RoyChoudhury, Blandine Laferrère, Ari Shechter, Marie-Pierre St-Onge
This pilot study tested the independent and interactive effects of sleep and meal times, under identical sleep duration and feeding conditions, on insulin sensitivity (Si) in overweight adults. Participants underwent a 4-phase randomized crossover inpatient study differing in sleep times: normal (Ns: 0000-0800 hours) or late (Ls: 0330-1130 hours); and in meal times: normal (Nm: 1, 5, 11, and 12.5 hours after awakening) or late (Lm: 4.5, 8.5, 14.5, and 16 hours after awakening). An insulin-modified frequently sampled intravenous glucose tolerance test, at scheduled breakfast time, and a meal tolerance test, at scheduled lunch time, were performed to assess Si after 3 days in each condition...
February 2018: Sleep Health
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