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https://www.readbyqxmd.com/read/28944793/a-mn-doped-ni2p-nanosheet-array-an-efficient-and-durable-hydrogen-evolution-reaction-electrocatalyst-in-alkaline-media
#1
Ya Zhang, Yiwei Liu, Min Ma, Xiang Ren, Zhiang Liu, Gu Du, Abdullah M Asiri, Xuping Sun
Developing earth-abundant and high-performance electrocatalysts toward the alkaline hydrogen evolution reaction (HER) is highly desired. In this communication, we report a Mn-doped Ni2P nanosheet array on nickel foam (Mn-Ni2P/NF) as a high-efficiency electrocatalyst for the HER in alkaline solutions. This Mn-Ni2P/NF can drive 20 mA cm(-2) at an overpotential of 103 mV in 1.0 M KOH, which is 82 mV less than that for Ni2P/NF. In addition, it also demonstrates excellent long-term electrochemical durability for at least 25 h...
September 25, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28944175/long-term-outcome-of-simultaneous-septal-myectomy-and-anterior-mitral-leaflet-retention-plasty-in-hypertrophic-obstructive-cardiomyopathy-the-berlin-experience
#2
Eva Maria Delmo Walter, Mariano Francisco Javier, Roland Hetzer
BACKGROUND: Various surgical strategies designed to relieve left ventricular outflow tract obstruction (LVOTO) and correct mitral regurgitation (MR) in hypertrophic obstructive cardiomyopathy (HOCM) have evolved, yet reports on the long-term outcomes of each technique are scarce. We provide an update on over 20 years' experience at our institution in the standardized surgical treatment of HOCM. METHODS: Between April 1986 and April 2014, 320 cases of endomyocardial resection and 305 septal myectomies were performed at our institution...
July 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28944174/hypertrophic-obstructive-cardiomyopathy-the-leipzig-experience
#3
Jawad Khalil, Michael Kuehl, Pirose Davierwala, Friedrich Wilhelm Mohr, Martin Misfeld
BACKGROUND: Management of hypertrophic obstructive cardiomyopathy (HOCM) has evolved considerably over the last fifty years, and includes medical treatment as well as septal myectomy (SM) to relief symptoms caused by left ventricular outflow tract obstruction (LVOTO). We report the Leipzig Heart Center experience in the surgical management of patients with HOCM. METHODS: We collected data from all patient treated surgically with a myectomy for LVOTO in patients with HOCM between 1997 and 2016...
July 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28943533/incidence-and-significance-of-spontaneous-st-segment-re-elevation-after-reperfused-anterior-acute-myocardial-infarction%C3%A3-relationship-with-infarct-size-adverse-remodeling-and-events-at-1-year
#4
Léo Cuenin, Sophie Lamoureux, Mathieu Schaaf, Thomas Bochaton, Jean-Pierre Monassier, Marc J Claeys, Gilles Rioufol, Gérard Finet, David Garcia-Dorado, Denis Angoulvant, Meyer Elbaz, Nicolas Delarche, Pierre Coste, Marc Metge, Thibault Perret, Pascal Motreff, Eric Bonnefoy-Cudraz, Gérald Vanzetto, Olivier Morel, Inesse Boussaha, Michel Ovize, Nathan Mewton
BACKGROUND: Up to 25% of patients with ST elevation myocardial infarction (STEMI) have ST segment re-elevation after initial regression post-reperfusion and there are few data regarding its prognostic significance.Methods and Results:A standard 12-lead electrocardiogram (ECG) was recorded in 662 patients with anterior STEMI referred for primary percutaneous coronary intervention (PPCI). ECGs were recorded 60-90 min after PPCI and at discharge. ST segment re-elevation was defined as a ≥0...
September 23, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28942198/effect-of-antibiotics-administered-via-the-respiratory-tract-in-the-prevention-of-ventilator-associated-pneumonia-a-systematic-review-and-meta-analysis
#5
Frederico Castro Costa Póvoa, Pablo Cardinal-Fernandez, Israel Silva Maia, Maycon Moura Reboredo, Bruno Valle Pinheiro
PURPOSE: We evaluated the effect of antibiotics administered via the respiratory tract to prevent the ventilator-associated pneumonia (VAP) in mechanically ventilated (MV) patients. METHODS: We searched relevant articles for trials that evaluated the impact of prophylactic antibiotics administered through the respiratory tract on the occurrence of VAP. The end-point was the occurrence of VAP in MV patients. RESULTS: We included 6 comparative trials involving 1158 patients (632 received prophylactic antibiotic)...
September 18, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28941870/temporal-changes-in-motor-variability-during-prolonged-lifting-lowering-and-the-influence-of-work-experience
#6
Alireza Sedighi, Maury A Nussbaum
Existing research indicates that repetitive motions are strongly correlated with the development of work-related musculoskeletal disorders (WMSDs). Resulting from the redundant degrees-of-freedom in the human body, there are variations in motions that occur while performing a repetitive task. These variations are termed motor variability (MV), and may be beneficial for reducing WMSD risks. To better understand the potential role of MV in preventing injury risk, we evaluated the effects of fatigue on MV using data collected during a lab-based prolonged, repetitive lifting/lowering task...
September 15, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28941064/localized-surface-plasmon-induced-position-sensitive-photodetection-in-silicon-nanowire-modified-ag-si
#7
Chunlian Mei, Shuai Liu, Xu Huang, Zhikai Gan, Peiqi Zhou, Hui Wang
Surface plasmon-based approaches are widely applied to improve the efficiency of photoelectric devices such as photosensors and photocells. In order to promote the light absorption and electron-hole pair generation in devices, metallodielectric nanostructures are used to boost the growth of surface plasmons. Here, silicon nanowires (SiNWs) are used to modify a metal-semiconductor structure; thus, Ag/SiNWs/Si is manufactured. In this system, a large increased lateral photovoltaic effect (LPE) is detected with a maximum positional sensitivity of 65...
September 22, 2017: Small
https://www.readbyqxmd.com/read/28940995/preparation-of-cobalt-based-electrodes-by-physical-vapor-deposition-on-various-nonconductive-substrates-for-electrocatalytic-water-oxidation
#8
Yizhen Wu, Le Wang, Mingxing Chen, Zhaoxia Jin, Wei Zhang, Rui Cao
Artificial photosynthesis requires efficient anodic electrode materials for water oxidation. We herein report the facial preparation of Co metal thin films through physical vapor deposition (PVD) on various nonconductive substrates, including regular and quartz glass, mica sheet, polyimide, and polyethylene terephthalate (PET). Subsequent surface electrochemical modification using cyclic voltammetry (CV) makes these films active for electrocatalytic water oxidation by reaching a current density of 10 mA cm-2 at a low overpotential of 330 mV in 1...
September 21, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28940717/imidazolium-ions-with-an-alcohol-substituent-for-enhanced-electrocatalytic-reduction-of-co2
#9
Xianbo Jin, Lin Zhang, Nian Wu, Jichen Zhang, Yang Hu, Zhiyong Wang, Lin Zhuang
Electrochemical reduction of CO2 to CO is attractive for carbon dioxide reduction, energy regeneration and storage. Imidazolium Ionic liquids (IMILs) are promising electrolyte catalysts for this important reaction. Herein we report functionalizing the imidazolium ion with a propanol substituent at the N site can significantly enhance the catalytic activity of IMILs, causing a positive shift of the onset potential for the CO2 reduction by about 90 mV in an acetonitrile electrolyte. Theoretical calculation indicated that the propanol hydroxyl could bridge a local hydrogen bonding chain as shortcut for proton transfer, leading to a dramatic decrease of the activation barrier for the IMIL-catalytic reduction of CO2...
September 20, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28940628/identification-of-electrocardiographic-risk-markers-for-the-initial-and-recurrent-episodes-of-ventricular-fibrillation-in-patients-with-brugada-syndrome
#10
Hiroshi Morita, Atsuyuki Watanabe, Satoshi Kawada, Masakazu Miyamoto, Yoshimasa Morimoto, Koji Nakagawa, Nobuhiro Nishii, Kazufumi Nakamura, Hiroshi Ito
INTRODUCTION: New onset of ventricular fibrillation (VF) in asymptomatic patients with Brugada-type ECG is not frequent, but it cannot be negligible. Risk markers for predicting VF are usually based on results of analysis in symptomatic patients, and they have not been determined for asymptomatic patients. We analyzed ECG markers in patients with Brugada syndrome to differentiate the risk factors for VF in both symptomatic and asymptomatic patients. METHODS: The subjects were 471 patients with Brugada syndrome and we divided the subjects into two groups: Asymptomatic group (n = 326) and Symptomatic group (syncope: n = 122, VF: n = 23)...
September 22, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28940306/calibration-and-error-analysis-of-metal-oxide-semiconductor-field-effect-transistor-dosimeters-for-computed-tomography-radiation-dosimetry
#11
Sigal Trattner, Peter Prinsen, Jens Wiegert, Elazar-Lars Gerland, Efrat Shefer, Tom Morton, Carla M Thompson, Yoad Yagil, Bin Cheng, Sachin Jambawalikar, Rani Al-Senan, Maxwell Amurao, Sandra S Halliburton, Andrew J Einstein
PURPOSE: Metal-oxide-semiconductor field-effect transistors (MOSFETs) serve as a helpful tool for organ radiation dosimetry, and their use has grown in computed tomography (CT). While different approaches have been used for MOSFET calibration, those using the commonly-available 100 mm pencil ionization chamber have not incorporated measurements performed throughout its length, and moreover no previous work has rigorously evaluated the multiple sources of error involved in MOSFET calibration...
September 21, 2017: Medical Physics
https://www.readbyqxmd.com/read/28938619/anti-cancer-efficacy-of-biotinylated-chitosan-nanoparticles-in-liver-cancer
#12
Mingrong Cheng, Weiping Zhu, Qing Li, Dejian Dai, Yiming Hou
The present study investigated the synthesis of biotinylated chitosan (Bio-CS) from chitosan using a nanomaterial skeleton with biotin and the successful targeting of the formulation in liver cancer cells. Bio-CS was validated by fourier transformed infrared spectroscopy and hydrogen(-1) nuclear magnetic resonance spectroscopy. Bio-CS and plasmid DNA were used to construct Bio-CS/plasmid DNA nanoparticles according to the optimal molar ratio of 1:1 and the optimal pH-value of 5.5. Under these conditions, the parameters mean particle size, potential, encapsulation rate and drug loading, were 82...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938021/alterations-in-the-ability-to-maintain-balance-as-a-result-of-stochastic-resonance-whole-body-vibration-in-women
#13
Karolina Donocik, Magdalena Hartman-Petrycka, Agata Lebiedowska, Barbara Błońska-Fajfrowska
PURPOSE: A vertical posture makes it difficult to maintain balance especially in the elderly. Loss of balance leads to falls and injuries. In the present study, we evaluated whether balance maintenance can be improved with the use of stochastic resonance whole body vibration (SR-WBV). METHODS: An examination of balance, involving 187 women aged 19-74 years, was conducted using double-plate posturography pre and post SR-WBV. The SR-WBV trainings were performed using the SRT Zeptor Medical-plus noise device...
2017: PloS One
https://www.readbyqxmd.com/read/28937146/associations-of-aniseikonia-with-metamorphopsia-and-retinal-displacements-after-epiretinal-membrane-surgery
#14
Y Ichikawa, Y Imamura, M Ishida
PurposeTo determine the correlation of the degree of aniseikonia with the retinal displacements and metamorphopsia in patients that have undergone successful epiretinal membrane (ERM) surgery.MethodsSubjects were 28 eyes with an ERM in 28 patients. The New Aniseikonia Test (NAT) and M-CHARTS were used to quantify the degree of preoperative and postoperative aniseikonia and metamorphopsia. We also evaluated the distance between the intersections of 2 sets of retinal vessels situated vertically or horizontally by using spectral-domain optical coherence tomography (SD-OCT) images in 28 patients...
September 22, 2017: Eye
https://www.readbyqxmd.com/read/28936959/-correlation-between-apache-ii-scores-and-delirium-probability-of-senile-severe-pneumonia-patients-undergoing-invasive-mechanical-ventilation
#15
Xinghua Pei, Haiming Yu, Yanhong Wu, Xu Zhou
OBJECTIVE: To investigate the correlation between acute physiology and chronic health evaluation II (APACHE II) scores and delirium probability of senile severe pneumonia patients undergoing invasive mechanical ventilation (MV). METHODS: A retrospective study was conducted. Eighty-nine senile severe pneumonia patients undergoing invasive MV admitted to intensive care unit (ICU) of Hunan Provincial People's Hospital from January 2015 to March 2017 were enrolled. APACHE II scores were collected 24 hours before invasive MV...
September 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28936952/-application-of-injection-test-in-confirming-the-ideal-position-of-esophageal-balloon-catheter
#16
Han Chen, Ming Xu, Yanlin Yang, Xuan He, Jianxin Zhou
OBJECTIVE: To evaluate the safety and feasibility of injection test which is used to locate esophageal balloon catheter. METHODS: A prospective study was conducted. The patients undergoing invasive mechanical ventilation (MV) admitted to general intensive care unit (ICU) of Beijing Tiantan Hospital Affiliated to Capital Medical University from May 2015 and March 2017 were enrolled. The commercially available esophageal balloon catheter was modified to perform injection test...
September 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28936675/reconnection-to-mechanical-ventilation-for-1%C3%A2-h-after-a-successful-spontaneous-breathing-trial-reduces-reintubation-in-critically-ill-patients-a-multicenter-randomized-controlled-trial
#17
M Mar Fernandez, Alejandro González-Castro, Monica Magret, M Teresa Bouza, Marcos Ibañez, Carolina García, Begoña Balerdi, Arantxa Mas, Vanesa Arauzo, José M Añón, Francisco Ruiz, José Ferreres, Roser Tomás, Marta Alabert, Ana Isabel Tizón, Susana Altaba, Noemi Llamas, Rafael Fernandez
BACKGROUND: Spontaneous breathing trials (SBT) can be exhausting, but the preventive role of rest has never been studied. This study aimed to evaluate whether reconnection to mechanical ventilation (MV) for 1 h after the effort of a successful SBT could reduce the need for reintubation in critically ill patients. METHODS: Randomized multicenter trial conducted in 17 Spanish medical-surgical intensive care units (Oct 2013-Jan 2015). Patients under MV for longer than 12 h who fulfilled criteria for planned extubation were randomly allocated after a successful SBT to direct extubation (control group) or reconnection to the ventilator for a 1-h rest before extubation (rest group)...
September 22, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28936507/a-pyrene-modified-cobalt-salophen-complex-immobilized-on-multiwalled-carbon-nanotubes-acting-as-a-precursor-for-efficient-electrocatalytic-water-oxidation
#18
Ting-Ting Li, Jinjie Qian, Qianqian Zhou, Jian-Li Lin, Yue-Qing Zheng
Immobilization of earth-abundant water oxidation catalysts (WOCs) on carbon supports to produce functional electrodes for electrochemical water splitting is a crucial approach for future clean energy production. Herein we report the non-covalent immobilization of a pyrene-bearing cobalt(ii) Schiff base complex (2) on the surface of multiwalled carbon nanotubes (MWCNTs) to form a hybrid anode for electrocatalytic water oxidation. The 2/MWCNT anode displayed excellent catalytic activity and durability in neutral aqueous solution, and a catalytic current density of 1...
September 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28935591/evidence-that-p-glycoprotein-inhibitor-elacridar-loaded-nanocarriers-improve-epidermal-targeting-of-an-anticancer-drug-via-absorptive-cutaneous-transporters-inhibition
#19
Daniela V Giacone, Vanessa F M Carvalho, Soraia K P Costa, Luciana B Lopes
Because P-glycoprotein (P-gp) plays an absorptive role in the skin, its pharmacological inhibition represents a strategy to promote cutaneous localization of anticancer agents that serve as its substrates, improving local efficacy while reducing systemic exposure. Here, we evaluated the ability of a nanoemulsion (NE) co-encapsulating a P-gp inhibitor (elacridar) with the antitumor drug paclitaxel to promote epidermal targeting. Loaded NE displayed a nanometric size (45.2±4.0 nm) and negative zeta potential (-4...
September 18, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28935428/predictive-factors-for-the-outcome-of-high-flow-nasal-cannula-therapy-in-a-pediatric-intensive-care-unit-is-the-spo2-fio2-ratio-useful
#20
Fulya Kamit Can, Ayşe Berna Anil, Murat Anil, Neslihan Zengin, Fatih Durak, Caner Alparslan, Zeynep Goc
OBJECTIVES: To determine the predictive factors for the outcome of high-flow nasal cannula (HFNC) therapy in a pediatric intensive care unit (PICU). MATERIALS AND METHODS: We prospectively included all patients with acute respiratory distress/failure aged 1month to 18years who were admitted to the PICU between January 2015 and May 2016 and treated with HFNC as a primary support and for postextubation according to our pre-established protocol. HFNC failure was defined as the need for escalation to non-invasive ventilation (NIV) or invasive mechanical ventilation (MV)...
September 6, 2017: Journal of Critical Care
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