Search Results
Results 251 - 300 of 1993
< 1 2 3 4 5 6 7 8 9 10 11 >
Wang Zuowei - - 2013
Fifty-three third and fourth graders from China participated in this study. Participants' working memory (WM) was assessed by the Automated Operation Span task. Then, they solved mental addition problems of different types under low- and high-pressure conditions. Performance was analysed as a function of pressure condition, working memory capacity, and ...
Lin Long - - 2013
We report an innovative, large-area, and self-powered pressure mapping approach based on the triboelectric effect, which converts the mechanical stimuli into electrical output signals. The working mechanism of the triboelectric active sensor (TEAS) was theoretically studied by both analytical method and numerical calculation to gain an intuitive understanding of the ...
Mundle Scott O C - - 2013
Processes that lead to pressure changes in closed experimental systems can dramatically increase the total uncertainty in enrichment factors (ε) based on headspace analysis and compound-specific isotope analysis (CSIA). We report: (1) A new technique to determine ε values for non-isobaric processes, and (2) a general approach to evaluate the ...
Habasaki J - - 2013
Molecular dynamics simulations have been performed to study the structures along the pressure-volume diagram of network-glasses and melts exemplified by the lithium disilicate system. Experimentally, densification of the disilicate glass by elevated pressure is known and this feature is reasonably reproduced by the simulations. During the process of densification or ...
Pawlus S - - 2013
4-methyl-3-heptanol, a monohydroxy alcohol with a relatively small dielectric Debye process, is studied in wide ranges of temperature (143 K < T < 308 K) and pressure (0.1 MPa < p < 864 MPa). When monitored under isochronous conditions, i.e., focusing on constant relaxation times, as well as under isothermal ...
Meng Bin - - 2013
Surfactants exhibit maxima in their critical micelle concentrations upon application of hydrostatic pressure, which is attributable to changes in their volumes of micellization from positive to negative values with increasing pressure. We present a direct molecular simulation analysis of the volumes of micellization of an anionic, cationic, and nonionic surfactant ...
Landry Jayan Marie - - 2013
Abstract Purpose . To determine the physiological and psychological effects of adding a Himalayan singing bowl (HSB) to a directed relaxation (DR) session. Design . Randomized crossover study. Setting . Community-based counseling practice. Subjects . Fifty-one participants completed two randomly assigned sessions beginning with either 12 minutes of HSB or ...
Xu L Y - - 2013
With the aim of preparing paper-based writing electronics, a kind of conductive pen was made with nano-silver ink as the conductive component and a rollerball pen as the writing implement. This was used to direct-write conductive patterns on Epson photo paper. In order to decrease the sintering temperature, pressure was ...
Kosty Jennifer A - - 2013
BACKGROUND:Our objective was to determine whether there is variability in the foundational literature and across centers in how mean arterial blood pressure is measured to calculate cerebral perfusion pressure.METHODS:We reviewed foundational literature and sent an e-mail survey to members of the Neurocritical Care Society.RESULTS:Of 32 articles reporting cerebral perfusion pressure ...
Belonoshko Anatoly B - - 2013
We performed ab initio molecular dynamics simulations of the C2c and Cmca-12 phases of hydrogen at pressures from 210 to 350 GPa. These phases were predicted to be stable at 0 K and pressures above 200 GPa. However, systematic studies of temperature impact on properties of these phases have not been performed so ...
Gray Rob - - 2013
How is performance under pressure influenced by the history of events that precede it, and how does the pressure outcome influence the series of events that follow? A baseball batting simulation was used with college players to investigate these questions. In Experiment 1, the difficulty of the simulation was first ...
Fulcher Lewis P LP Department of Physics and Astronomy, Bowling Green State University, Bowling Green, Ohio 43403, USA. - - 2013
The classic work on laryngeal flow resistance by van den Berg et al. [J. Acoust. Soc. Am. 29, 626-631 (1957)] is revisited. These authors used a formula to summarize their measurements, and thus they separated the effects of entrance loss and pressure recovery from those of viscosity within the glottis. ...
Lee Dong Woo - - 2013
We propose an advanced combinational microfluidic multiplexing method capable of increasing the number of addressable fluidic channels dramatically. Using only 4 control lines, the proposed advanced combinational multiplexer, utilizing two different levels of control pressure, could address up to 19 fluidic channels, which is at least two times larger than ...
Ihmsen Markus - - 2013
We propose a novel formulation of the projection method for Smoothed Particle Hydrodynamics (SPH). We combine a symmetric SPH pressure force and an SPH discretization of the continuity equation to obtain a discretized form of the pressure Poisson equation (PPE). In contrast to previous projection schemes, our system does consider ...
Schmid Martin - - 2013
In mechanically ventilated patients, Pulse Pressure Variation (PPV) has been shown to be a useful parameter to guide fluid management. We evaluated a real-time automated PPV-algorithm by comparing it to manually calculated PPV-values. In 10 critically ill patients, blood pressure was measured invasively (IBP) and non-invasively (CNAP(®) Monitor, CNSystems Medizintechnik, ...
Stern Ralph H RH Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, - - 2013
The Canadian Hypertension Education Program (CHEP) has published guidelines annually since 2000. The CHEP guidelines are a model of concise, comprehensive, up-to-date, evidence-rated guidelines for physicians who diagnose and treat hypertension. The guidelines address measurement of blood pressure and the definition of hypertension, secondary hypertension evaluation and treatment, and blood ...
Atkinson Greg - - 2013
In keeping with this review-series theme, we question whether the morning surge in blood pressure (MSBP) is a benign response to the physiological challenges during the first 3 h after waking, or is it clinically important? Therefore, we scrutinise the circadian-related mechanisms, the measurement methods and the prognostic value of the ...
Fernandes Paul G - - 2013
Analyses of global fish stocks paint a mixed picture of success, with some holding fishery management responsible for the poor status of many stocks [1-3] or predicting widespread collapse [1, 4]. Some suggest a stable [5] or improving situation [6] in certain jurisdictions. The debate is particularly polarized in the ...
Kanduč Matej - - 2013
Using the novel thermodynamic extrapolation technique in molecular dynamics simulations, we investigate the interaction between phospholipid bilayers subject to various boundary conditions that correspond to established experimental methods for the determination of pressure-distance curves: the osmotic stress method, the hydrostatic method, and the surface force apparatus method. We discuss the ...
Legrand Vincent - - 2013
The pressure dependencies of the lattice parameters of the spin transition compound [Fe(PM-BiA)2(NCS)2] have been derived from neutron powder diffraction measurements at low temperature. The study of the compound [Fe(PM-BiA)2(NCS)2]-pI has first confirmed the atypical spin crossover behaviour under pressure of this compound that shows a pressure induced structural transition ...
Zandavi S H - - 2013
The validity of thermodynamics at the nanoscale has been questioned, but we demonstrate that it can be applied to determine surface properties of a nonporous and of a mesoporous silica from the measured adsorption isotherms of three hydrocarbon vapors. These measurements give the total amount of vapor adsorbed and liquid ...
Korpinen Samuli - - 2013
The European seas are under anthropogenic pressures impacting the state of water quality, benthic habitats and species. The EU Marine Strategy Framework Directive (MSFD) requires the Member States to assess the impacts of pressures and make a programme of measures leading to good environmental status (GES) by 2020. This study ...
Castañón-Rodríguez J F - - 2013
High pressure processing (HPP) technology was used to modify the structural composition of sugarcane bagasse. The effect of pressure (0, 150 and 250MPa), time (5 and 10min) and temperature (25 and 50°C) as well as the addition of phosphoric acid, sulfuric acid and NaOH during the HPP treatment were assessed ...
Fang Weiwei - - 2013
A robust allylic palladium-NHC complex was developed and exhibited extremely high catalytic activity toward aminocarbonylation of various (hetero)aryl iodides under atmospheric carbon monoxide pressure, in which a broad range of secondary and primary amines were well tolerated. In addition, the concise synthesis of an anticancer drug tamibarotene was accomplished even ...
McManus R J - - 2013
Although self-monitoring of blood pressure is common among people with hypertension, little is known about how general practitioners (GPs) use such readings. This survey aimed to ascertain current views and practice on self-monitoring of UK primary care physicians. An internet-based survey of UK GPs was undertaken using a provider of ...
Zhao Jinggeng - - 2013
High-pressure angle-dispersive X-ray diffraction experiments on iron-based superconductor Ce(O0.84F0.16)FeAs were performed up to 54.9 GPa at room temperature. A tetragonal to tetragonal isostructural phase transition starts at about 13.9 GPa, and a new high-pressure phase has been found above 33.8 GPa. At pressures above 19.9 GPa, Ce(O0.84F0.16)FeAs completely transforms to ...
Shockley Kristen M - - 2013
Work-family conflict, a prevalent stressor in today's workforce, has been linked to several detrimental consequences for the individual, including physical health. The present study extends this area of research by examining episodic work-family conflict in relation to objectively measured cardiovascular health indicators (systolic and diastolic blood pressure and heart rate) ...
Syrek Christine J - - 2013
The objective of this article is to investigate transformational leadership as a potential moderator of the negative relationship of time pressure to work-life balance and of the positive relationship between time pressure and exhaustion. Recent research regards time pressure as a challenge stressor; while being positively related to motivation and ...
Picard Aude - - 2013
Microbial life has been prevailing in the biosphere for the last 3.8Ga at least. Throughout most of the Earth's history it has experienced a range of pressures; both dynamic pressure when the young Earth was heavily bombarded, and static pressure in subsurface environments that could have served as a refuge ...
Sharma Vivek Kumar - - 2013
Perceived stress is higher for students in various healthcare courses. Previous studies have shown that pranayama practice is beneficial for combating stress and improve cardiovascular functions but both fast and slow pranayama practice produce different physiological responses. Present study was conducted to compare the effects of commonly practiced slow and ...
Orozco-Fuentes Sirio - - 2013
Nonmotile elongated bacteria confined in two-dimensional open microchannels can exhibit collective motion and form dense monolayers with nematic order if the cells proliferate, i.e., grow and divide. Using soft molecular dynamics simulations of a system of rods interacting through short range mechanical forces, we study the effects of the cell ...
Sbragaglia M - - 2013
We present a theory to obtain the pressure tensor for a class of nonideal multicomponent lattice Boltzmann models, thus extending the theory presented by X. Shan [Phys. Rev. E 77, 066702 (2008)] for single-component fluids. We obtain the correct form of the pressure tensor directly on the lattice and the ...
Cornelissen G - - 2013
On Sunday morning June 9, 2013, a legend and one of the greatest scientists of the 20th and 21st centuries left us. His close associates also lost a very dear friend and a mentor who never ceased to inspire. Franz Halberg's passing at 93.93 years of age (Franz always listed ...
Adnadjevic Djordje - - 2013
The threat of safety failure during use of potent actuators is a known problem. The use of such actuators in the field of pressure algometry requires adaptation of safety measures since stimulation is applied to human beings. This design provides an additional safety level required in the field of computer-controlled ...
Liu Jiankun - - 2013
We conceived a set of physical model-based techniques to compute blood pressure (BP) from a standard oscillometric cuff pressure measurement. First, the cuff pressure measurement is represented with a physical model. Then, the model unknowns are determined from the measurement via a parametric, non-parametric or hybrid technique. Finally, the entire ...
Dias Ranga P RP Departments of Physics and Chemistry, Institute for Shock Physics, Washington State University, Pullman, WA 99164, - - 2013
High pressure plays an increasingly important role in both understanding superconductivity and the development of new superconducting materials. New superconductors were found in metallic and metal oxide systems at high pressure. However, because of the filled close-shell configuration, the superconductivity in molecular systems has been limited to charge-transferred salts and ...
Lercher Peter P Division of Social Medicine, Medical University Innsbruck, Sonnenburgstrasse 16, A-6020 Innsbruck. Austria. - - 2013
Although the majority of studies on community noise levels and children's physiological stress responses are positive, effect sizes vary considerably, and some studies do not confirm these effects. Employing a contextual perspective congruent with soundscapes, a carefully constructed sample of children (N = 115, M = 10.1 yr) living in households in relatively high (>60 ...
Smith Nadia Alexandra Sofia - - 2013
High Pressure Shift Freezing (HPSF) has been proven more beneficial for ice crystal size and shape than traditional (at atmospheric pressure) freezing. A model for growth and coarsening of ice crystals inside a frozen food sample (either at atmospheric or high pressure) is developed and some numerical experiments are given, ...
Martel Eric - - 2013
This study compared indirect blood pressure measurements using a non-invasive method, high-definition oscillometry (HDO), with direct measurements using a radio-telemetry device in awake cats. Paired measurements partitioned to five sub-ranges were collected in six cats using both methods. The results were analysed for assessment of correlation and agreement between the ...
Rieke Horst - - 2013
Quality chest compressions (CC) are the most important factor in successful cardiopulmonary resuscitation. Adjustment of CC based upon an invasive arterial blood pressure (ABP) display would be theoretically beneficial. Additionally, having one compressor present for longer than a 2-minute cycle with an ABP display may allow for a learning process ...
Hung P K - - 2013
We have numerically studied the diffusion mechanism in silica liquid following an approach where the diffusion rate is evaluated via the SiOx → SiOx ±1 reaction rate υreact and the mean square displacement of particles dreact as a reaction happens. Five models at pressure up to 25 GPa and at ...
Lu Bo - - 2013
Voltage-biased solid-state nanopores are well established in their ability to detect and characterize single polymers, such as DNA, in electrolytes. The addition of a pressure gradient across the nanopore yields a second molecular driving force that provides new freedom for studying molecules in nanopores. In this work, we show that ...
Shang Fujun - - 2013
The aim of this study was to validate the iHealth BP5 wireless upper arm blood pressure (BP) monitor according to the European Society of Hypertension International Protocol (ESH-IP) revision 2010. The ESH-IP revision 2010 for validation of BP measuring devices in adults was followed precisely. A total of 99 pairs ...
Ryan Cormac G - - 2013
Low back pain (LBP) is a major cause of work absence. Assisting individuals back into work is an important part of rehabilitation. To explore the experiences of individuals returning to work after an episode of sickness absence due to LBP. Five women employed by a UK University who had returned ...
Zhou Mi - - 2013
In-situ high pressure Raman spectra of S-trioxane have been measured up to 28 GPa. A first-order phase transition was detected around at 3 GPa from the splitting, newly existing and diminishing of the internal modes, and from changes in the slope on plots of frequency versus pressure. The vibrational spectra ...
Zhu J - - 2013
Topological superconductivity is one of most fascinating properties of topological quantum matters that was theoretically proposed and can support Majorana Fermions at the edge state. Superconductivity was previously realized in a Cu-intercalated Bi2Se3 topological compound or a Bi2Te3 topological compound at high pressure. Here we report the discovery of superconductivity ...
Modir-Rousta Ali - - 2013
Typically sweeping- reversed migration EKC (RM-EKC) is used for online enrichment and separation of neutral compounds in CE, however sweeping is not usually suitable for highly polar neutral compounds due to the lack of strong interaction with micellar phase. Since acidic BGE or coated capillaries (BGE pH 2-8) are used ...
Tognotti Danika - - 2013
The effects of a single-point, F29A, cavity-forming mutation on the unfolding thermodynamic parameters of azurin from Pseudomonas aeruginosa and on the internal dynamics of the protein fold under pressure were probed by the fluorescence and phosphorescence emission of Trp48, deeply buried in the compact hydrophobic core of the macromolecule. Pressure-induced ...
Pickett Stephanie - - 2013
Guided by Leventhal's common sense model of illness representations, this study examined the relationship between hypertension beliefs and self-care behaviors necessary for blood pressure (BP) control in a sample of 111 community-dwelling African Americans with hypertension. Participants completed the revised Illness Perception Questionnaire, BP Self-Care Scale, and a demographic data ...
Santamaria Ruben - - 2013
Endohedrally encapsulated hydrogen clusters doped with inert helium ($H_{24}He$) and ionic lithium ($H_{24}Li^+$) are investigated. The confinement model is a nanoscopic analog of the experimental compression of solid hydrogen. The structural and electronic properties of the doped hydrogen clusters are determined under the effects of pressure. The results are compared ...
< 1 2 3 4 5 6 7 8 9 10 11 >