Search Results
Results 151 - 200 of 858
1 2 3 4 5 6 7 8 9 10 >
Montgomery Jeffrey M - - 2011
We have performed image plate x-ray diffraction studies on a heavy rare earth metal, thulium (Tm), in a diamond anvil cell to a pressure of 195 GPa and volume compression V/V(o) = 0.38 at room temperature. The rare earth crystal structure sequence, [Formula: see text] distorted fcc, is observed in Tm ...
Sudhakar Balasubramanian - - 2011
To determine the effect of combination of edible oils on blood pressure, anthropometric parameters, lipid profile, lipid peroxidative markers, antioxidant status and electrolytes in drug (nifedipine) taking patients with hypertension. In this study, patients were separated into 4 groups. Normal (n=14), hypertensive patients (n=38), 38 patients under medication with nifedipine ...
Lea A S - - 2011
A high-pressure atomic force microscope (AFM) that enables in situ, atomic scale measurements of topography of solid surfaces in contact with supercritical CO(2) (scCO(2)) fluids has been developed. This apparatus overcomes the pressure limitations of the hydrothermal AFM and is designed to handle pressures up to 100 atm at temperatures ...
Schulte E - - 2011
Background: This study investigates whether long-term treatment with an angiotensin-converting enzyme inhibitor (ACEI) impairs the haemodynamic regulation during total intravenous anaesthesia (TIVA) for minor surgery. Methods: In a prospective, two-armed observational study, 36 patients undergoing TIVA for minor surgery were studied. Seventeen were taking ACEIs regularly but no other antihypertensive ...
Berge H - - 2011
Background UEFA requires that all male players of the elite teams undergo cardiovascular screening, which was conducted as a research project in Norway. Objective To study the prevalence of elevated blood pressure (BP), and test if there were any relation to consequences of hypertension as increased left ventricle (LV) mass ...
Khamidullaeva Gulnoz A - - 2011
We investigated the association between the C825T polymorphism of the G-protein β3 subunit (GNB3) gene with essential hypertension (EH) and cardiovascular remodeling markers in Uzbek males. The study included 174 Uzbek men (mean age 49±10 years) with untreated EH of stage 1-2 and 60 normotensive males. The C825T polymorphism of ...
Yan Zhou - - 2011
Abstract Objective. In the present study, we detected a relationship between serum lipid/lipoprotein [serum triglyceride (TG), total cholesterol (TC), low-density lipoprotein (LDL)-cholesterol and high-density lipoprotein (HDL)-cholesterol] and arterial blood pressure among Chinese nonagenarians/centenarian. Methods. The present study analyzed data from the survey that was conducted on all residents aged 90 ...
Kim Soo-Yeon - - 2011
Objectives- The purposes of this study were to assess retrospectively whether the waveform change during respiration on hepatic vein Doppler sonography is a parameter of severe portal hypertension as estimated by the hepatic venous pressure gradient (HVPG) and to compare with a hepatic vein damping index (DI) at expiration. Methods- ...
Saito Shin - - 2011
During the Ru deposition process for granular type perpendicular magnetic recording media, both a reduction in the Ru intermediate layer thickness and lowering of sputtering gas pressure were successfully achieved by focusing on a self-shadowing effect. Oblique-incidence sputtering with a 60° incident angle under an Ar gas pressure of 0.6 ...
Ren Ruojin - - 2011
BACKGROUND: The aim of this work is to prospectively assess the relationship between trans-laminar cribrosa pressure difference and neuroretinal rim area as morphologic surrogate of glaucomatous optic nerve damage. METHODS: The study included 22 patients with high-pressure glaucoma, 13 patients with normal-pressure glaucoma, and 17 subjects with ocular hypertension. All ...
Naganuma T - - 2011
Background: The recent development of gradient-echo T2*-weighted magnetic resonance imaging (MRI) has enabled the highly accurate detection of prior cerebral microbleeds (CMBs), which might indicate a higher risk of future intracerebral hemorrhage (ICH) and be a marker of cerebral small-vessel disease in the general population. The present study investigated the ...
Dursun Nurcan - - 2011
Adriamycin (ADR) causes morphological and functional alterations in mitochondrial structure in the heart. The study's aim was to determine whether there is a protective effect of selenium (Se) on ADR-induced cardiac damage. Rats were divided into four groups: The first group was injected saline intraperitoneally (i.p.) for 21 days; the ...
Kakimi Kazuyuki - - 2011
An eccentric-type tablet machine fitted with 8-mm-diameter flat-faced punches was used to measure the forces of upper and lower punches, die-wall pressure, tablet ejection force, and scraper pressure (SCR), a type of shear stress, to evaluate sticking behavior. The shear stress between the surfaces of the tablet and lower punch ...
Nagabukuro Hiroshi - - 2011
Both the physiological role of muscarinic receptors for bladder function and the therapeutic efficacy of antimuscarinic agents for overactive bladder syndrome are well documented. We investigated the effect of antimuscarinic agents with different subtype selectivity on urodynamic parameters in non-human primates and rodents, and compared plasma levels of these agents ...
Arroyo C - - 2011
The effect of High Hydrostatic Pressure (HHP) on the survival of Cronobacter sakazakii was investigated. Deviations from linearity were found on the survival curves and the Mafart equation accurately described the kinetics of inactivation. Comparisons between strains and treatments were made based on the time needed for a 5-log(10) reduction ...
Wu Christine H - - 2011
To compare values of urodynamic measurements of cats with idiopathic cystitis (IC) with previously published data for healthy female cats. 11 female cats with IC. 2 sequential cystometrograms and 2 urethral pressure profiles were obtained for each cat. All tracings were evaluated for evidence of overactive urinary bladder (OAB). Maximum ...
Yang Jie - - 2011
In this paper, a W-Ta thin-film thermocouple has been integrated on a diamond anvil cell by thin-film deposition and photolithography methods. The thermocouple was calibrated and its thermal electromotive force was studied under high pressure. The results indicate that the thermal electromotive force of the thermocouple exhibits a linear relationship ...
Ng Manwa L - - 2011
The present study investigated the aerodynamic differences between standard oesophageal (SE) and tracheoesophageal (TE) speech. Airflow and air pressure values below the pharyngoesophageal segment were obtained from 10 SE and 12 TE superior speakers of Cantonese. Airflow data were directly measured from sustained vowels, and sub-pharyngoesophageal segment pressure was estimated ...
Wang Lin - - 2011
In this report, we demonstrate the feasibility of applying a 250-nm focused x-ray beam to study a single crystalline NbSe(3) nanobelt under high-pressure conditions in a diamond anvil cell. With such a small probe, we not only resolved the distribution and morphology of each individual nanobelt in the x-ray fluorescence ...
Abdel-Hamid Sameh - - 2011
Context: In tablet manufacturing, less attention is paid to the measurement of die-wall pressure than to force-displacement diagrams. Objective: Therefore, the aim of this study was to investigate radial stress change during pharmaceutical compaction. Materials and Methods: The Presster(TM), a tablet-press replicator was used to characterize compaction behavior of microcrystalline ...
Horn Gavin P - - 2011
Abstract Objectives. The primary objective of this study was to document the timeline of physiologic recovery from firefighting activities in order to inform emergency medical services (EMS) of vital sign values that might be expected during incident rehabilitation and in developing rehabilitation protocols to make decisions about when to return ...
Katiyar Amit - - 2011
Variation of subharmonic response from contrast microbubbles with ambient pressure is numerically investigated for non-invasive monitoring of organ-level blood pressure. Previously, several contrast microbubbles both in vitro and in vivo registered approximately linear (5-15 dB) subharmonic response reduction with 188 mm Hg change in ambient pressure. In contrast, simulated subharmonic ...
Nikitina Elena R - - 2011
Marinobufagenin (MBG), a bufadienolide cardiotonic steroid, induces cardiovascular fibrosis. Because levels of MBG in preeclampsia are increased, and anti-MBG monoclonal antibody reduces blood pressure (BP) in a rat model of preeclampsia, we hypothesized that in preeclampsia, elevated MBG levels would be associated with the development of fibrosis in feto-placental circulation ...
Ely Daniel - - 2011
Sex-determining region Y (Sry) is a transcription factor. Our research group has shown that there are multiple copies of Sry in Wistar-Kyoto (WKY) and spontaneous hypertensive (SHR) rats, and that they have novel functions separate from testes determination. We hypothesized that exogenously delivered Sry3 to the normotensive WKY male kidney ...
Kung Ethan O - - 2011
The purpose of this study is to validate numerical simulations of flow and pressure in an abdominal aortic aneurysm (AAA) using phase-contrast magnetic resonance imaging (PCMRI) and an in vitro phantom under physiological flow and pressure conditions. We constructed a two-outlet physical flow phantom based on patient imaging data of ...
Tam Tam Kiran B KB Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson, MS 39216, - - 2011
We sought to determine the effect of an endothelin type A receptor antagonist (ETA) on uterine artery resistive index (UARI) and mean arterial pressure (MAP) in a placental ischemia rat model of preeclampsia produced by reduction in uterine perfusion pressure (RUPP). UARI was assessed by Doppler velocimetry in RUPP and ...
Davis Michael J MJ Dept. of Medical Pharmacology & Physiology, Univ. of Missouri School of Medicine, 1 Hospital Dr., Rm. M451, Columbia, MO 65212, USA. - - 2011
Secondary lymphatic valves are essential for minimizing backflow of lymph and are presumed to gate passively according to the instantaneous trans-valve pressure gradient. We hypothesized that valve gating is also modulated by vessel distention, which could alter leaflet stiffness and coaptation. To test this hypothesis, we devised protocols to measure ...
Fischbach Michel - - 2011
It is well known that the efficiency of peritoneal dialysis (PD) varies with the duration of the dwell and with the prescribed fill volume. Automated PD (APD) is classically given as a series of recurrent exchanges, each having the same dwell time and fill volume-that is, conventional APD (APD-C). We ...
Shimizu Kazuaki - - 2011
Hypertension promotes and escalates kidney injury, including kidney fibrosis. Fractalkine/CX3CL1 is a unique chemokine that works as a leukocyte chemoattractant and an adhesion molecule. Recently, fractalkine/CX3CL1 has been reported to promote tissue fibrosis via its cognate receptor, CX3CR1. However, the involvement of the fractalkine-CX3CR1 axis in the pathogenesis of hypertensive ...
Ortega Luis M - - 2011
Hypertension is prevalent in an estimated 29% to 80% of patients treated with peritoneal dialysis (PD). Cardiovascular disease represents the most common cause of mortality in this population, and hypertension (HTN) plays an important role. Volume overload is prevalent in PD patients because of liberal intake of fluids and loss ...
Tank Jens - - 2011
OBJECTIVES: Previous association studies suggested that common polymorphisms of the beta-2 adrenoreceptor gene leading to glycine for arginine substitution at position 16 or glutamic acid for glutamine substitution at position 27 affect blood pressure. We reasoned that measurements of resting sympathetic nerve traffic could increase the sensitivity of defining a ...
Jones Helen - - 2011
Early morning reduction in endothelium-dependent flow-mediated dilation (FMD) may contribute to the high incidence of sudden cardiac death at this time of day. The mechanisms underpinning diurnal variation in FMD are unclear, but potentially relate to a circadian rhythm in sympathetic nerve activity (SNA). We hypothesized that blockade of α(1)- ...
Morris Daniel A - - 2011
BACKGROUND: The authors hypothesized that in patients with heart failure with normal left ventricular (LV) ejection fraction (HFNEF), the same fibrotic processes that affect the subendocardial layer of the left ventricle could also alter the subendocardial fibers of the left atrium. Consequently, these fibrotic alterations, together with chronically elevated LV ...
Kenawey Mohamed - - 2011
PURPOSE: The effect of the rotational alignment of lower extremities on the tibiofemoral contact mechanics is not known. This study was designed to measure the contact area and pressure within medial and lateral tibiofemoral compartments following controlled serial rotational deformities through femoral and tibial shafts. METHODS: Eight lower extremities of ...
Steinback Craig D - - 2011
We investigated the effects of hypocapnia in normal subjects on airway tone while controlling airway cooling and drying. We hypothesized that airway tone is positively related to the degree of hypocapnia. Participants (8; 2 women) underwent 3 protocols consisting of 20min of hyperpnea (breathing frequency=20 breaths min(-1); tidal volume=2.5L) and ...
Leal Viviane O - - 2011
OBJECTIVE: To evaluate muscle function (MF) of patients on hemodialysis (HD) and to investigate the dialysis determinants of maximal voluntary handgrip strength (HGS). METHODS: Forty-three patients on HD (25 men, six diabetics, 54.5 ± 12.2 y of age, 62.2 ± 51.4 mo on dialysis) were studied. HGS was measured three ...
Subramanian Natarajan - - 2011
Raman spectroscopy in laser-heated diamond anvil cells has been employed to probe the bonding state and phase diagram of dense hydrogen up to 140 GPa and 1,500 K. The measurements were made possible as a result of the development of new techniques for containing and probing the hot, dense fluid, ...
Linz Dominik - - 2011
BACKGROUND: Obstructive sleep apnea (OSA) causes negative tracheal pressure (NTP) and is associated with atrial fibrillation (AF). OBJECTIVE: This study aimed to determine the mechanism of atrial electrophysiological changes during tracheal occlusion with or without applied NTP and to evaluate the role of vagal activation, Na(+)/H(+)-exchanger (NHE) and ATP-dependent potassium ...
Leitch Alicea A - - 2011
The bromo-substituted bisdiselenazolyl radical 4b (R(1) = Et, R(2) = Br) is isostructural with the corresponding chloro-derivative 4a (R(1) = Et, R(2) = Cl), both belonging to the tetragonal space group P4̅2(1)m and consisting of slipped π-stack arrays of undimerized radicals. Variable temperature, ambient pressure conductivity measurements indicate a similar ...
Asakura Keisuke - - 2011
Objective: Cutting the intersegmental plane by using a stapler during segmentectomy might interfere with the expansion of the preserved lung due to visceral pleura caught in a staple line, especially in a large regional segmentectomy, such as left upper division or basal segmentectomy. We compared the preserved lung volume after ...
Miyahara Masaaki - - 2011
We report evidence for the natural dissociation of olivine in a shergottite at high-pressure and high-temperature conditions induced by a dynamic event on Mars. Olivine (Fa(34-41)) adjacent to or entrained in the shock melt vein and melt pockets of Martian meteorite olivine-phyric shergottite Dar al Gani 735 dissociated into (Mg,Fe)SiO(3) ...
Shen Guoyin - - 2011
The behavior of volatiles is crucial for understanding the evolution of the Earth's interior, hydrosphere, and atmosphere. Noble gases as neutral species can serve as probes and be used for examining gas solubility in silicate melts and structural responses to any gas inclusion. Here, we report experimental results that reveal ...
Ahart Muhtar - - 2011
The sound velocity in polycrystalline ice was measured as a function of pressure at room temperature to 100 GPa, through the phase field of ice VII and crossing the ice X transition, by Brillouin scattering in order to examine the elasticity, compression mechanism, and structural transitions in this pressure range. ...
Johnson Andrew D AD Framingham Heart Study, National Heart, Lung, and Blood Institute, Framingham, MA 01702, - - 2011
We previously conducted genome-wide association meta-analysis of systolic blood pressure, diastolic blood pressure, and hypertension in 29,136 people from 6 cohort studies in the Cohorts for Heart and Aging Research in Genomic Epidemiology Consortium. Here we examine associations of these traits with 30 gene regions encoding known antihypertensive drug targets. ...
Pizzetti Marianna - - 2011
The microwave-assisted aminocarbonylation of ynamides at low pressures of CO is reported. A new class of (E)-acrylamides that are potentially suitable for several applications has been regioselectively synthesized after microwave irradiation for only 20 min by using eco-friendly [Fe(3) (CO)(12) ] as the catalyst precursor and triethylamine as the ligand. This ...
Wolf Jan Lennard - - 2011
The gas-phase ozonolysis of cyclic-alkenes (1-methyl-cyclohexene, methylene-cyclohexane, α-pinene, β-pinene) is studied with respect to the pressure dependent formation of secondary organic aerosol (SOA). We find that SOA formation is substantially suppressed at lower pressures for all alkenes under study. The suppression coincides with the formation of ketene (α-pinene, 1-methyl-cyclohexene), ethene ...
Kurzydłowski Dominik - - 2011
Recent high-pressure experiments conducted on xenon difluoride (XeF(2)) suggested that this compound undergoes several phase transitions up to 100 GPa, becoming metallic above 70 GPa. In this theoretical study, in contrast to experiment, we find that the ambient pressure molecular structure of xenon difluoride, of I4/mmm symmetry, remains the most ...
Agostoni Piergiuseppe - - 2011
Background. High altitude adaptation leads to progressive increase in arterial PaO(2). In addition to increased ventilation, better arterial oxygenation may reflect improvements in lung gas exchange. Previous investigations reveal alterations at the alveolar-capillary barrier indicative of decreased resistance to gas exchange with prolonged hypoxia adaptation, but how quickly this occurs ...
Beulen Bart W A M M - - 2011
A new method has been developed to measure local pressure waveforms in large arteries by using ultrasound. The method is based on a simultaneous estimation of distension waveforms and velocity profiles from a single noninvasive perpendicular ultrasound B-mode measurement. Velocity vectors were measured by applying a cross-correlation based technique to ...
Desai Mital - - 2011
BACKGROUND: The aim of this study was to manufacture a new aortic model with physiological properties, which could be used for long-term durability testing of endovascular stent-grafts, as per the recommendations of the Food and Drug Administration. METHODS: Porcine abdominal aortas were acquired to establish values for compliance. The aortic ...
1 2 3 4 5 6 7 8 9 10 >