Search Results
Results 1 - 50 of 1844
1 2 3 4 5 6 7 8 9 10 >
Mikheykin A S AS Faculty of Physics, Southern Federal University, 105/42 Rostov-on-Don, Rostov Oblast 344090, - - 2014
A high-pressure synchrotron radiation diffraction study has been carried out on Ni1-xCuxCr2O4 solid solutions. Observed pressure-controlled phase transitions, along with data previously collected for temperature-induced phase transitions, are analyzed in the framework of the unified phenomenological model that results in mapping of the generic phase diagram for the whole family ...
Fernández-Pendás Mario M Basque Center for Applied Mathematics, E-48009, Bilbao, - - 2014
Adaptation and implementation of the Generalized Shadow Hybrid Monte Carlo (GSHMC) method for molecular simulation at constant pressure in the NPT ensemble are discussed. The resulting method, termed NPT-GSHMC, combines Andersen barostat with GSHMC to enable molecular simulations in the environment natural for biological applications, namely, at constant pressure and ...
Mączka Mirosław M Institute of Low Temperature and Structure Research, Polish Academy of Sciences , Box 1410, 50-950 Wrocław 2, - - 2014
Temperature- and pressure-dependent studies of Raman and IR spectra have been performed on azetidinium zinc formate, [(CH2)3NH2][Zn(HCOO)3]. Vibrational spectra showed distinct anomalies in mode frequencies and bandwidths near 250 and 300 K, which were attributed to structural phase transitions associated with the gradual freezing of ring-puckering motions of the azetidinium ...
Martínez-Ruiz F J FJ Departamento de Física Aplicada, Universidad de Huelva, 21071 Huelva, - - 2014
We propose an extension of the improved version of the inhomogeneous long-range corrections of Janeček [J. Phys. Chem. B 110, 6264-6269 (2006)], presented recently by MacDowell and Blas [J. Chem. Phys. 131, 074705 (2009)] to account for the intermolecular potential energy of spherical, rigid, and flexible molecular systems, to deal ...
Schuabb Caroline C Physical Chemistry I-Biophysical Chemistry, Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Str. 6, 44227 Dortmund - - 2014
A combined temperature- and pressure-dependent study was employed to reveal the conformational and free-energy landscape of phenylalanine transfer RNA (tRNA(Phe) ), a known model for RNA function, to elucidate the features that are essential in determining its stability. These studies also help explore its structural properties under extreme environmental conditions, ...
Kobayashi Fumiyuki - - 2014
To determine optimal temperature of a two-stage system of low pressure carbon dioxide microbubbles (MB-CO2) for inactivating enzymes in unpasteurized sake (UPS), effect of two-stage MB-CO2 containing a heating coil at various temperatures on the inactivation of the α-glucosidase in UPS was investigated, and the quality of the sake treated ...
Liu Xiao-Huan XH Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry, Nankai University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071 (P. R. - - 2014
Silver nanoparticles were successfully supported on the zeolite-type metal-organic framework MIL-101 to yield Ag@MIL-101 by a simple liquid impregnation method. For the first time, the conversion of terminal alkynes into propiolic acids with CO2 was achieved by the use of the Ag@MIL-101 catalysts. Owing to the excellent catalytic activity, the ...
Riello Massimo - - 2014
We studied the conformation behaviour of ortho-phenylene 8-mers and 10-mers solvated in a series of linear alkane solvents by means of classical molecular dynamics and first-principles calculations. Irrespective of the solvent used, we find that at room pressure the molecule sits in the well-defined close-helical arrangement previously observed in light ...
Bro-Jeppesen John J 1Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark. 2Department of Anesthesia and Intensive Care, Lund University, Skåne University Hospital, Lund, Sweden. 3Adult Clinical Care, University Hospital of Wales, Cardiff, United Kingdom. 4Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Anesthesia and Intensive Care, IRCCS San Martino IST, Genoa, Italy. 5Department of Anesthesia and Intensive Care, Lund University, Helsingborg Hospital, Helsingborg, Sweden. 6Department of Cardiology, Lund University, Skåne University Hospital, Lund, Sweden. 7Department of Cardiothoracic Anaesthesia, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, - - 2014
To investigate the hemodynamic profile associated with different target temperatures and to assess the prognostic implication of inotropic/vasopressor support and mean arterial pressure after out-of-hospital cardiac arrest. There is a lack of information how different target temperatures may affect hemodynamics. Post hoc analysis of a prospective randomized study. Thirthy-six ICUs ...
Jia En-Zhi EZ Department of Cardiovascular Medicine, First Affiliated Hospital of Nanjing Medical University, Nanjing, - - 2014
Objective: The purpose of this study was to investigate the influence of weather on the occurrence of acute ST-elevation myocardial infarction in Chinese subjects. Methods: Weather and climate data, as well as the occurrence of STEMI, were monitored at 2 am, 8 am, 2 pm, and 8 pm between 2003 ...
Bernal Fabian L FL Chemistry Department and Centre for Material Science and Nanotechnology and §Department of Physics, University of Oslo , NO-0315 Oslo, - - 2014
The GdFeO3-type perovskite NaFeF3 transforms to CaIrO3-type postperovskite at pressures as low as 9 GPa at room temperature. The details of such a transition were investigated by in situ synchrotron powder diffraction in a multianvil press. Fit of the p-V data showed that the perovskite phase is more compressible than ...
Tejada-Ortigoza Viridiana V Centro de Biotecnología FEMSA, Escuela de Biotecnología y Alimentos, Tecnológico de Monterrey, Eugenio Garza Sada Ave. 2501, CP 64849, Monterrey, NL, - - 2014
Comminuted orange, a product obtained by grinding the juice and peel and used to formulate beverages, has a high pectin methylesterase (PME) activity, thus the inactivation of this enzyme is necessary to avoids quality losses related with the cloud losses. The use of high hydrostatic pressure (HHP) and mild temperature ...
Cordeiro Jefferson F JF Programa de Pós-Graduação em Medicina Veterinária, Universidade Federal de Campina Grande, Patos, PB, - - 2014
Many primates are kept in breeding for scientific or conservation purposes, but much of the clinical care is represented by trauma. To provide more effective interventions in some of these cases, the present study aimed to evaluate the technique of local anesthesia through the epidural space in capuchin monkeys (Sapajus ...
Kojima Ichiro I Department of Sports Dentistry, Tokyo Dental College, Mihama-ku, Chiba, - - 2014
The aim of this study was to clarify and quantify factors influencing thinning during a thermoforming using a special simulation model that has three different flat surfaces such as 0 degree, 45 degree and 90 degree against a pressurizing force. Air pressure type samples were made by EVA and acrylic ...
Barroso-Bogeat A A Department of Organic and Inorganic Chemistry, Faculty of Sciences, University of Extremadura, Avda. de Elvas s/n, E-06006 Badajoz, Spain. - - 2014
From a granular commercial activated carbon (AC) and six metal oxide (Al2O3, Fe2O3, SnO2, TiO2, WO3 and ZnO) precursors, two series of AC-metal oxide nanocomposites were prepared by wet impregnation, oven-drying at 120 °C, and subsequent heat treatment at 200 or 850 °C in an inert atmosphere. Here, the electrical ...
Bedjanian Yuri - - 2014
The kinetics of the reaction of limonene (C10H16) with F2 has been studied using a low pressure (P = 1 Torr) and a high pressure turbulent (P = 100 Torr) flow reactor coupled with an electron impact ionization and chemical ionization mass spectrometers, respectively: F2 + Limonene --> products (1). ...
Efimchenko Vadim S - - 2014
Powder samples of cristobalite-I are loaded with hydrogen at pressures up to 90 kbar and T = 250 °C and quenched under pressure to the liquid N2 temperature. The quenched samples are examined at ambient pressure by X-ray diffraction, Raman spectroscopy and thermal desorption analysis. The hydrogen content of the ...
- - 2014
As temperatures drop, pressure on the NHS rises. So winter, with its increased levels of sickness and higher numbers of emergency admissions particularly of frail older people, is always a challenge.
Klaiman Jordan M JM University of Guelph, - - 2014
Reducing temperature below the optimum of most vertebrate hearts impairs contractility and reduces organ function. However, a number of fish species, including the rainbow trout, can seasonally acclimate to low temperature. Such ability requires modification of physiological systems to compensate for the thermodynamic effects of temperature on biological processes. The ...
Joseph Bellal B From the Division of Trauma, Emergency Surgery, Critical Care, and Burns, Department of Surgery, University of Arizona, Tucson, - - 2014
Hypothermia is a known predictor of mortality in trauma patients; however, its impact on organ procurement has not been defined. The aim of this study was to assess the effect of hypothermia on organ procurement. We hypothesized that admission hypothermia impedes successful organ procurement. We performed a 5-year retrospective analysis ...
Erba A A Dipartimento di Chimica and Centre of Excellence NIS (Nanostructured Interfaces and Surfaces), Università di Torino, via Giuria 5, IT-10125 Torino, - - 2014
A general-purpose, fully automated, computationally efficient implementation is presented of a series of techniques for the simultaneous description of pressure and temperature effects on structural properties of materials, by means of standard ab initio simulations. Equilibrium volume, bulk modulus, thermal expansion coefficient, equation-of-state, Grüneisen parameter, constant-pressure and constant-volume specific heats ...
Pranskunas Andrius A Department of Intensive Care Medicine, Lithuanian University of Health Sciences, Eiveniu str.2, 50009, Kaunas, Lithuania, - - 2014
To assess the effect of whole body heat stress on sublingual microcirculation. Fourteen apparently healthy subjects participated in the study. Passive body heating was performed by immersing the subjects up to the waist in a water bath at 44 °C continuously until a rectally obtained core temperature of 39.5 °C was reached. ...
Zena Lucas A LA Department of Animal Morphology and Physiology, College of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal, São Paulo, 14884-900, Brazil; National Institute of Science and Technology on Comparative Physiology (INCT- Fisiologia - - 2014
For an adequate blood supply to support metabolic demands, vertebrates regulate blood pressure to maintain sufficient perfusion to avoid ischemia and other tissue damage like edema. Using a pharmacological approach (phenylephrine and sodium nitroprusside) we investigated baroreflex sensitivity at 15, 25, and 30°C in toads Rhinella schneideri. Baroreflex sensitivity presented ...
Franco-Vidal Valérie V ENT and Skull Base Surgery Department, Bordeaux 2 University Hospital, Bordeaux, - - 2014
Hydrops and abnormalities of inner fluid pressure are involved in some otologic diseases such as Ménière's disease (MD). However, demonstrating abnormal perilymphatic or endolymphatic pressure is challenging. Multifrequency tympanometry studies in MD patients demonstrated an increase of the width of conductance tympanograms (outside an attack) compared with controls. To confirm ...
Fu Bing B Department of Physics, Shanghai Normal University, Shanghai, 200234, People's Republic of - - 2014
The thermal stabilities and melting behavior of icosahedral nickel clusters under hydrostatic pressure have been studied by constant-pressure molecular dynamics simulation. The potential energy and Lindemann index are calculated. The overall melting temperature exhibits a strong dependence on pressure. The Lindemann index of solid structure before melting varies slowly and ...
Asgar Pour Hossein H Department of Surgical Nursing, Aydin Health School, Adnan Menderes University, Aydin, Turkey. Electronic address: - - 2014
To investigate the effects of fever on the haemodynamic parameters (pulse rate, arterial oxygen saturation, systolic blood pressure, diastolic blood pressure and mean arterial blood pressure) of patients in a neurosurgical intensive care unit. A prospective, repeated-measures study. This study was performed in the neurosurgical intensive care unit of a ...
Tanabe Natsumi - - 2014
Baroreflex failure syndrome is a rare disorder which causes labile blood pressure, headache, flushing, diaphoresis and emotional lability. It is caused by history of trauma or radiotherapy in the cervical legion, bilateral carotid-body tumor or resection of glossopharyngeal nerve. We experienced a case of hemodialysis patient who had difficulty in ...
Pauw Ruben De RD Vrije Universiteit Brussel, Department of Chemical Engineering (CHIS-IR), Pleinlaan 2, 1050 Brussels, - - 2014
The study of radial and axial temperature profiles always has been an area interest both in liquid chromatography (LC) and supercritical fluid chromatography (SFC). Whereas in LC always an increase in temperature is observed due to the dominance of viscous heating, in SFC, especially for low modifier content, a decrease ...
Bezacier Lucile L European Synchrotron Radiation Facility, 6 rue Jules Horowitz, 38000 Grenoble, - - 2014
High-pressure H2O polymorphs among which ice VI and ice VII are abundant in the interiors of large icy satellites and exo-planets. Knowledge of the elastic properties of these pure H2O ices at high-temperature and high-pressure is thus crucial to decipher the internal structure of icy bodies. In this study we ...
Abramson Evan H - - 2014
Shear viscosities of supercritical nitrogen have been measured in the high-pressure diamond-anvil cell, to 673 K and pressures in excess of 10 GPa, using a rolling-sphere technique. The entire set of data, along with lower pressure data from the literature, can be fit to a two-parameter expression in reduced viscosity ...
Chen Lee Chuin LC Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Kofu, Yamanashi, 400-8511, Japan, - - 2014
The heating of electrospray ion source under atmospheric pressure is limited to the normal boiling point of the solution. The boiling takes place when the vapor pressure of the liquid at a given temperature equals the ambient pressure. By using a high pressure ESI source, which has been developed previously ...
Zieliński Marcin M a University of Warmia and Mazury in Olsztyn , The Faculty of Environmental Sciences, Department of Environment Protection Engineering , Warszawska 117, 10 - 719 Olsztyn , - - 2014
ABSTRACT This paper presents data on methane fermentation of algal biomass containing Cholella Sp. and Scenedesmus Sp. The biomass was obtained from closed-culture photobioreactors. Before the process, the algae were subjected to low temperature and pressure pre-treatment for 0.0 h, 0.5 h, 1.0 h and 2.0 h. The prepared biomass was subjected to mesophilic ...
Das Deya D Materials Research Centre, Indian Institute of Science, Bangalore 560012, India. - - 2014
The reduction of the diffusion energy barrier for Li in electrodes is one of the required criteria to achieve better performances in Li ion batteries. Using density functional theory based calculations, we report a pressure induced manifold enhancement of Li-kinetics in bulk FCC fullerene. Scanning of the potential energy surface ...
Toro-Funes Natalia - - 2014
Ultra high pressure homogenization (UHPH) is an emerging technology to obtain safe and high-quality liquid foods based on the dynamic application of high pressure. The effect of six UHPH treatments at 200 and 300 MPa with different inlet temperatures (T<sub>) (55, 65 and 75 ºC) on the content of tocopherols, ...
Hermida-Merino Daniel D DUBBLE@ESRF, Netherlands Organisation for Scientific Research (N.W.O.), CS40220, 38043, Grenoble, Cedex 9, - - 2014
A versatile high pressure X-ray sample cell has been developed for conducting in situ time-resolved X-ray scattering experiments in the pressure and temperature regime required (pressures up to 210 bars and temperatures up to 120 °C) for chemical reactions in supercritical fluids. The large exit opening angle of the cell ...
Cheng J-G JG Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, - - 2014
We described an integrated-fin gasket technique for the palm cubic-anvil apparatus specialized for the high-pressure and low-temperature measurements. By using such a gasket made from the semi-sintered MgO ceramics and the tungsten-carbide anvils of 2.5 mm square top, we successfully generate pressures over 16 GPa at both room and cryogenic ...
May Eric F EF Centre for Energy, School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley WA 6009, - - 2014
Vibrating tube densimeters are well-established tools for measuring fluid densities precisely at elevated temperatures and pressures. However, the conventional method of calibrating them utilises a model in which the apparatus parameters are represented as polynomials of temperature and pressure that contain a variable number of terms. Here a robust, physically-based ...
Edwards Trenton T Division of Materials Science and Engineering, University of California at Davis, Davis, CA 95616, - - 2014
A fundamental mechanistic understanding of the pressure- and/or temperature-induced facile transformation of the coordination environment of boron is important for changing the physical properties of glass. We have used in situ high-pressure (up to 2 gigapascals) boron-11 solid-state nuclear magnetic resonance spectroscopy in combination with ab initio calculations to investigate ...
Wong Vivian V Vivian Wong, PhD, RN, CNS, CWON, Associate Professor, School of Nursing, San Jose State University, San Jose, - - 2014
The purpose of the study was to determine whether the interface pressure created when the heel is in contact with the bed surface reduced healthy adults' heel oxygen delivery (transcutaneous oxygen [TcO2]) and raised heel skin temperature. We also determined whether there was a hyperemic response to pressure relief on ...
Lacina D D Institute for Shock Physics and Department of Physics, Washington State University, Pullman, Washington 99164, - - 2014
Liquid nitrogen was subjected to multiple shock compression to examine its response to pressures (15-40 GPa) and temperatures (1800-4000 K) previously unexplored in static and shock compression studies. Raman spectroscopy measurements were used to characterize the molecular bond response and to determine temperatures in the peak state. By extending our ...
Shinozaki Ayako A Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo, Tokyo 113-0033, - - 2014
Oligomerization of benzene at high pressures up to 16 GPa was investigated at room temperature using an opposed-anvil type pressure apparatus. The recovered samples were analyzed using GC-MS to identify and quantify the products after the high-pressure experiments. Some structural isomers of benzene dimer as well as biphenyl, naphthalene, and ...
Delmas Henri H Université de Toulouse, INP, UPS, LGC (Laboratoire de Génie Chimique), 4 Allée Emile Monso, CS 84234, F-31432 Toulouse, France; CNRS, LGC, F-31432 Toulouse, France. Electronic address: - - 2014
This work aims at investigating for the first time the key sonication (US) parameters: power density (DUS), intensity (IUS), and frequency (FS) - down to audible range, under varied hydrostatic pressure (Ph) and low temperature isothermal conditions (to avoid any thermal effect). The selected application was activated sludge disintegration, a ...
Casalini R R Chemistry Division, Naval Research Laboratory, Code 6120, Washington, D.C. 20375-5342, - - 2014
An equation is derived that expresses the thermodynamic scaling exponent, γ, which superposes relaxation times τ and other measures of molecular mobility determined over a range of temperatures and densities, in terms of static physical quantities. The latter are available in the literature or can be measured at ambient pressure. ...
Reiss Ido I Physics Department, Ben-Gurion University of the Negev, POB 653, Be'er-Sheva 84105, Israel and Physics Department, Nuclear Research Center Negev, POB 9001, Be'er-Sheva 84190, - - 2014
Tangential discontinuities, seen as x-ray edges known as cold fronts (CFs), are ubiquitous in cool-core galaxy clusters. We analyze all 17 deprojected CF thermal profiles found in the literature, including three new CFs we tentatively identify (in clusters A2204 and 2A0335). We discover small but significant thermal pressure drops below ...
Dugrain Vincent V Laboratoire Kastler Brossel, ENS, UPMC, CNRS, 24 rue Lhomond, 75005 Paris, - - 2014
We describe and characterize a device for alkali vapor pressure modulation on the 100 ms timescale in a single-cell cold atom experiment. Its mechanism is based on optimized heat conduction between a current-modulated alkali dispenser and a heat sink at room temperature. We have studied both the short-term behavior during ...
Dubberke Frithjof H FH Lehrstuhl für Thermodynamik und Energietechnik, Universität Paderborn, Warburger Straße 100, 33098 Paderborn, - - 2014
An apparatus for the measurement of the speed of sound based on the pulse-echo technique is presented. It operates up to a temperature of 480 K and a pressure of 125 MPa. After referencing and validating the apparatus with water, it is applied to liquid ammonia between 230 and 410 ...
Wiberg Gustav K H GK Department of Chemistry and Nano-Science Center, University of Copenhagen, Universitetsparken 5, 2100 Ø Copenhagen, - - 2014
We present a detailed description of the construction and testing of an electrochemical cell allowing measurements at elevated temperature and pressure. The cell consists of a stainless steel pressure vessel containing the electrochemical glass cell exhibiting a three electrode configuration. The design of the working electrode is inspired by conventional ...
Hunt Simon A SA Department of Earth Sciences, University College London, Gower Street, London WC1E 6BT, United - - 2014
A new multi-anvil deformation apparatus, based on the widely used 6-8 split-cylinder, geometry, has been developed which is capable of deformation experiments at pressures in excess of 18 GPa at room temperature. In 6-8 (Kawai-type) devices eight cubic anvils are used to compress the sample assembly. In our new apparatus two ...
Schuld J J Department of General--, Visceral--, Vascular-- and Paediatric Surgery, University of Saarland, Homburg/Saar, Germany - - - 2014
To compare healthy subjects and patients after total mesorectal excision concerning anal resting--/squeeze pressure and surface--electromyography of the sphincter. 40 patients (9 female/ 31 male) after total mesorectal excision due to low or middle rectal cancer were compared to a sex--, age-- and BMI-- matched group of healthy volunteers by ...
Li Jing - - 2014
Raman spectra features of the ternary system NaCl-CaCl2-H2O under high temperatures and high pressures were systematically studied in the present work by using hydrothermal diamond anvil cell (HDAC) and Raman shifts of quartz to determine pressures, and it has been obtained for the quantitative relationship between Raman shifts of the ...
1 2 3 4 5 6 7 8 9 10 >