Search Results
Results 401 - 450 of 1890
< 4 5 6 7 8 9 10 11 12 13 14 >
Bishop Matthew M - - 2012
The structural phase stability of 1,1-diamino-2,2-dinitroethylene (FOX-7) has been studied up to 10 GPa through isothermal compression at 100 °C and 200 °C using synchrotron mid- and far-infrared spectroscopy. During isothermal compression at 100 °C changes are observed in vibrational spectra with increase in pressure that are indicative of significant ...
Asano Yuta - - 2012
An investigation of the precise determination of melting temperature in the modified Lennard-Jones system under pressure-free conditions [Y. Asano and K. Fuchizaki, J. Phys. Soc. Jpn. 78, 055002 (2009)] was extended under finite-pressure conditions to obtain the phase diagram. The temperature and pressure of the triple point were estimated to ...
Funamoto Kenichi - - 2012
Ultrasonic-measurement-integrated (UMI) simulation of blood flow is used to analyze the velocity and pressure fields by applying feedback signals of artificial body forces based on differences of Doppler velocities between ultrasonic measurement and numerical simulation. Previous studies have revealed that UMI simulation accurately reproduces the velocity field of a target ...
Elmahdy Mahdy Mohammed - - 2012
Biphasic fluorocarbon/hydrocarbon amphiphiles tethered to cores at distances commensurate with their packing requirement can provide thermodynamic pathways towards equilibrium. This contrasts with the analogous semifluorinated alkanes. The dynamics of a fluorous biphasic hexa(3,5-substituted-phenyl)benzene (HPB) is studied with dielectric spectroscopy as a function of temperature and pressure in comparison to the ...
Motamedi S M - - 2012
To assess the impact of continuous pressure imaging technology on strategic turning of patients by health professionals. This pilot study of a newly-developed continuous pressure imaging technology (XSENSOR ForeSite PatientTurn System) involved two phases of videotaped observation of medical inpatients, with each patient serving as his/her own control: a control ...
Horm Katie Marie - - 2012
Novel processing technologies such as high pressure homogenization (HPH) for the inactivation of foodborne viruses in fluids that retain nutritional attributes are in high demand. The objectives of this research were (i) to determine the effects of HPH alone or with an emulsifier (lecithin) on human norovirus surrogates-murine norovirus (MNV-1) ...
Hagen Michael D - - 2012
Evidence suggests that chlorthalidone has therapeutic advantages over hydrochlorothiazide, perhaps because of a longer antihypertensive effect. Although guidelines such as the Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure treat diuretics as a class, some experts believe chlorthalidone is the diuretic ...
Mourad J-J - - 2012
For the past 50 years, the implementation of therapeutic advances to the largest number of people has made it possible to have an exemplary reduction in cardiovascular mortality, contributing to extension of life expectancy observed in France. Nevertheless, such gains are fragile, and largely dependent on the quality of blood ...
Xia Ling - - 2012
A reduction in electroosmotic flow (EOF) is often desirable in glass microchannels for realizing high resolutions in capillary zone electrophoresis (CZE). While static and dynamic coatings have been commonly employed to accomplish this goal, such chemicals can introduce unwanted interactions of the analyte molecules with the separation medium and/or channel ...
Tzoulaki Ioanna I Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, - - 2012
A nutrient-wide approach may be useful to comprehensively test and validate associations between nutrients (derived from foods and supplements) and blood pressure (BP) in an unbiased manner. Data from 4680 participants aged 40 to 59 years in the cross-sectional International Study of Macro/Micronutrients and Blood Pressure (INTERMAP) were stratified randomly ...
Xiao Ningru - - 2012
The metastable wurtzite nanocrystals of CuGaS(2) have been synthesized through a facile and effective one-pot solvothermal approach. Through the Rietveld refinement on experimental X-ray diffraction patterns, we have unambiguously determined the structural parameters and the disordered nature of this wurtzite phase. The metastability of wurtzite structure with respect to the ...
Sah Sunita - - 2012
Professionals often face conflicts of interest that give them an incentive to provide biased advice, and disclosure (informing advisees about the conflict) is frequently proposed as a solution to the problem. We present 6 experiments that reveal a previously unrecognized perverse effect of disclosure: Although disclosure can decrease advisees' trust ...
Zywiec Magdalena - - 2012
The predator satiation hypothesis states that synchronous periodic production of seeds is an adaptive strategy evolved to reduce the pressure of seed predators. The seed production pattern is crucial to the predator satiation hypothesis, but there are few studies documenting the success of individuals that are in synchrony and out ...
Lima Aluísio Henrique Rodrigues de Andrade - - 2012
BACKGROUND: Arterial Hypertension (AH) is an aggravating condition for Metabolic Syndrome (MS), as well as being aggravated by it. Menopause can make hypertension treatment more difficult, as it favors the worsening of MS components. Although there is evidence that exercise training reduces blood pressure, whether menopause and SM affect the ...
Esquinas Antonio M - - 2012
We analyze validation and some technical aspects of indirect calorimetry for measurement of energy expenditure in healthy volunteers undergoing pressure controlled non-invasive ventilation (NIMV). This validation study assess the reliability of gas exchange measurement with indirect calorimetry among subjects who undergo, oxygen consumption and carbon dioxide production measure. These comments ...
Chang Jing - - 2012
The structure and mechanical properties of tantalum mononitride (TaN) are investigated at high pressure from first-principles using the plane wave pseudopotential method within the local density approximation. Three stable phases were considered, i.e., two hexagonal phases (ε and θ) and a cubic δ phase. The obtained equilibrium structure parameters and ...
Varanasi Srinivasa R - - 2012
A molecular dynamics simulation study of aqueous solution of LiCl is reported as a function of pressure. Experimental measurements of conductivity of Li(+) ion as a function of pressure shows an increase in conductivity with pressure. Our simulations are able to reproduce the observed trend in conductivity. A number of ...
Eslami Hossein - - 2012
There are many simulations in the literature to study the behavior of nanoconfined fluids between solid surfaces. Among them, a class of methods focuses on tuning the pore width in such a way that the fluid in confinement has the same tangential component of pressure as the bulk fluid. The ...
Levitan Emily B - - 2012
Visit-to-visit variability (VVV) of blood pressure is associated with cardiovascular disease. The authors examined the effects of visit number and timing and automated or manual measurement device on VVV in the placebo arm of the Trial of Preventing Hypertension (TROPHY) (N=225) and simulations. VVV was assessed using intra-individual standard deviation ...
Vella Dominic - - 2012
Thin shells are found in nature at scales ranging from viruses to hens' eggs; the stiffness of such shells is essential for their function. We present the results of numerical simulations and theoretical analyses for the indentation of ellipsoidal and cylindrical elastic shells, considering both pressurized and unpressurized shells. We ...
Laurent Adele D - - 2012
Molecular dynamics calculations of pressure effects on mStrawberry and mCherry fluorescent proteins are reported. The simulations reveal that mStrawberry has much floppier structure at atmospheric pressure, as evidenced by larger backbone fluctuations and the coexistence of two conformers that differ by Ser146 orientation. Consequently, pressure increase has a larger effect ...
Thom Simon - - 2012
The use of preventive medications in people at high risk of cardiovascular disease is conceptually straightforward, yet in practice the adoption of such measures is disappointingly low, plus there is wide international variation in preventive therapies.Several barriers might explain this shortfall and variation, but the simplicity and economy of a ...
Crespo José E - - 2012
Rain and temperature have been awarded as the most important weather factors that influence insect behavior. Barometric pressure studies have been relegated to a secondary place mainly because most studies deal with adult insects where temperature and water availability are the main environmental factors that influence behavior. We studied the ...
Forouzesh Elham - - 2012
Turgor pressure in plant cells is involved in many important processes. While stable and normal turgor pressure is required for healthy growth of a plant, changes in turgor pressure are indicative of changes taking place within the plant tissue. The ability to quantify turgor pressure of plant cells in vivo ...
- - 2012
The following articles are being highlighted as part of Circulation's Topic Review series. This series will summarize the most important manuscripts, as selected by the editors, published in Circulation and the Circulation subspecialty journals. The studies included in this article represent the most read manuscripts published on the topic of ...
Chen Jeff Z Y - - 2012
The structure of the system consisting of an aspirating pipette and an aspirated vesicle is investigated with fixed total vesicle volume, total vesicle surface area, and aspirated volume fraction, based on the bending-energy model. Through an energetic consideration, the usage of an aspirated volume fraction can be converted to the ...
Jaramillo R - - 2012
We describe a technique for making electrical transport measurements in a diamond anvil cell using an alcohol pressure medium, permitting acute sensitivity while preserving sample fidelity. The sample is suspended in the liquid medium by four gold leads that are electrically isolated by a composite gasket made of stainless steel ...
Alpert Bruce S - - 2012
We evaluated a new algorithm, the Nihon Kohden PVM-2701/Impulse-1, in an automated sphygmomanometer against the requirements of both the Association for the Advancement of Medical Instrumentation (AAMI) SP10 and International Standards Organization (ISO) standards. The Impulse-1 algorithm primarily utilizes a 1 pulse/step deflation. The advantage of the system is to ...
Watson Alice J - - 2012
Web-based self-management programs offer a novel approach for self-insured employers seeking to improve and maintain employee health. We conducted a 6-month prospective, cluster-randomized controlled trial designed to evaluate whether worksite access to an automated, web-based, self-management program resulted in better blood pressure control. The trial was conducted at 6 EMC ...
Dong Yujie - - 2012
A chameleon under pressure: The observed piezochromic behavior of the title compound (BP2VA) was found to depend on its molecular aggregation state and specifically on the strength of the π-π interaction between the anthracene rings of adjacent molecules. When BP2VA is ground or placed under pressure, its molecular aggregation state ...
Mota Manuel - - 2012
Filtration of an isotonic suspension of baker's yeast through a 0.45-micron membrane was studied at two different pressures, 40 and 80 kPa, for yeast concentrations ranging from 0.14 to 51 kg/m(3) (dry weight). For a yeast volume fraction above 0.06 (∼ 21.8 kg/m(3) ), the porosity of the yeast cake ...
Large Scott I - - 2012
The expression of prey antipredator defenses is often related to ambient consumer pressure, and prey express greater defenses under intense consumer pressure. Predation is generally greater at lower latitudes, and antipredator defenses often display a biogeographic pattern. Predation pressure may also vary significantly between habitats within latitudes, making biogeographic patterns ...
Lee Keun Jeong - - 2012
Although mercury (Hg) is a poisonous substance that has harmful effects on the environment and in humans, it is widely used in industrial facilities and in goods for daily use. Given the recent recognition of the risk posed by Hg exposure, the international society is trying to reduce the use ...
Cahyadi Christine - - 2012
Pellet coating is traditionally carried out using the Wurster coater. This study investigated the feasibility of pellet coating in a newly developed coater built with a unique airflow system, the Supercell™ coater (GEA Pharma Systems, UK). A full factorial design study was carried out to evaluate the influences of the ...
Bormashenko Edward - - 2012
Remarkable water repellency of birds' feathers and lotus leaves is discussed. It is demonstrated that physical mechanisms of superhydrophobicity of birds' feathers and lotus leaves are very different. The topography of lotus leaves is true-hierarchical one, whereas birds' feathers manifest pseudo-hierarchical relief, where various scales do not interact. The pronounced ...
Dreger Zbigniew A - - 2012
Decomposition of γ-RDX under high pressure - high temperature conditions was examined to elucidate the reactive behavior of RDX crystals. Vibrational spectroscopy measurements were obtained for single crystals in a diamond anvil cell (DAC) at pressures from 6 to 12 GPa and temperatures up to 600 K. Global decomposition rates, ...
Salmon Philip S - - 2012
The structure of GeO(2) glass was investigated at pressures up to 17.5(5) GPa using in situ time-of-flight neutron diffraction with a Paris-Edinburgh press employing sintered diamond anvils. A new methodology and data correction procedure were developed, enabling a reliable measurement of structure factors that are largely free from diamond Bragg peaks. ...
Fourme Roger - - 2012
Biomacromolecules are thermodynamic entities that exist in general as an equilibrium mixture of the basic folded state and various higher-energy substates including all functionally relevant ones. Under physiological conditions, however, the higher-energy substates are usually undetectable on spectroscopy, as their equilibrium populations are extremely low. Hydrostatic pressure gives a general ...
Chen Pang-Chia - - 2012
This paper investigates multi-objective controller design approaches for nonlinear boiler-turbine dynamics subject to actuator magnitude and rate constraints. System nonlinearity is handled by a suitable linear parameter varying system representation with drum pressure as the system varying parameter. Variation of the drum pressure is represented by suitable norm-bounded uncertainty and ...
Beckmann Jürgen - - 2012
When well-learned motor skills fail, such as when elderly persons fall or when athletes "choke under pressure," it is assumed that attention is directed toward the execution of the action. Research findings suggest that this controlled execution and subsequent inferior performance depend on a dominant left-hemispheric activation. In a series ...
Alptekin Sebahaddin - - 2012
A constant pressure ab initio MD technique and density functional theory with a generalized gradient approximation (GGA) was used to study the pressure-induced phase transition in zinc-blende CdTe. We found that CdTe undergoes a structural first-order phase transition to [Formula: see text] (binary β-tin) tetragonal structure in the constant pressure ...
Jacobsen M K - - 2012
In this paper, a high pressure setup is presented for performing simultaneous measurements of Seebeck coefficient and thermal diffusivity in multianvil apparatus for the purpose of enhancing the study of transport phenomena. Procedures for the derivation of Seebeck coefficient and thermal diffusivity∕conductivity, as well as their associated sources of errors, ...
Choi In-Mook - - 2012
A dynamic high pressure standard is becoming more essential in the fields of mobile engines, space science, and especially the area of defense such as long-range missile development. However, a complication arises when a dynamic high pressure sensor is compared with a reference dynamic pressure gauge calibrated in static mode. ...
Hicks Ashley J - - 2012
This work describes the design, construction, and testing of two capacitance transducers for use in a larger project investigating the molecular absorption of sound in certain gases. The transducers are based on designs presented in the literature, modified to work optimally in our system which consists of 4-inch diameter steel ...
Talmadge Carrick L - - 2012
An infrasound calibration system has been developed at the National Center for Physical Acoustics. The calibration tank is comprised of a 1" cylindrical shell 40" in diameter, 40" long, with 40" diameter hemispherical end caps. The interior volume of the tank is approximately 1.8 cubic meters. Each hemisphere has a ...
Lee Joong - - 2012
Seals have been frequently used to certify that individuals or organizations have authorized or approved a document that bears these impressions. Much attention has been focused on the detection of forged seal impressions to expose and prevent seal-related frauds. This paper describes an image-processing technique that detects seal impressions transferred ...
Debbi Eytan M - - 2012
BACKGROUND: In-shoe center of pressure (COP) measurement is essential in biomechanics. COP can be measured directly utilizing pressure-sensitive insoles, or calculated indirectly via force plate-generated data. While the latter does not require the use of additional measurement hardware (shoe insoles), its precision at calculating in-shoe COP has not been determined. ...
Barnes Donelle M - - 2012
Although the rate of hypertension (HTN) is no higher for Mexican-origin clients than for non-Hispanic Whites, their rate of blood pressure (BP) control is lower. To effectively assist clients with their BP, health care providers must first understand barriers and facilitators to BP control from the clients' perspectives. The purpose ...
Turcu Romulus V F - - 2012
High pressure magic angle spinning (MAS) nuclear magnetic resonance (NMR) with a sample spinning rate exceeding 2.1kHz and pressure greater than 165bar has never been realized. In this work, a new sample cell design is reported, suitable for constructing cells of different sizes. Using a 7.5mm high pressure MAS rotor ...
Sakurai T - - 2012
We have developed a high-pressure and high-field electron spin resonance (ESR) system using the combination of a commercially available superconducting quantum interference device (SQUID) magnetometer and a clamp-type piston cylinder pressure cell. The magnetic field range is up to 5T, and the maximum pressure reaches 1.5GPa. The most characteristic feature ...
< 4 5 6 7 8 9 10 11 12 13 14 >