Search Results
Results 151 - 200 of 1418
1 2 3 4 5 6 7 8 9 10 >
Feng Yejun Y 1] The Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA [2] The James Franck Institute and Department of Physics, University of Chicago, Chicago, Illinois 60637, - - 2014
Pressure can transform a transparent material into an opaque one, quench the moments in a magnet and force solids to flow like liquids. At 15 GPa, the pressure found 500 km below the earth's surface, the semiconductors silicon and germanium superconduct. Yet, at this same pressure, we show here that the magnetism ...
Zhao Yin-Ying YY School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China ; Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, - - 2014
To investigate the effects of transient high perfusion pressure on the retinal vessel diameter and retinal ganglion cells. The animals were divided into four groups according to different infusion pressure and infusion time (60 mm Hg-3min, 60 mm Hg-5min, 100 mm Hg-3min, 100 mm Hg-5min). Each group consisted of six ...
Meng You-Fan YF Department of Anesthesiology, Second Affiliated Hospital of Harbin Medical University, Harbin, China - - 2014
Background The aim of this study was to evaluate the effects of topical ropivacaine anesthesia on hemodynamic responses during intubation and extubation of hypertensive patients. Material and Methods One hundred fifty patients with hypertension ASA II-III were scheduled for noncardiac operations. Patients were divided into 3 groups: a control group ...
Peng Xiaoli X 1] Department of Epidemiology and Health Statistics, Institute of Public Health, Chengdu Medical College, Chengdu 610083, Sichuan, China [2] Research Center for Nutrition and Food Safety, Institute of Military Preventive Medicine, Third Military Medical University, Chongqing Key Laboratory of Nutrition and Food Safety, Chongqing Medical Nutrition Research Center, Chongqing 400038, China - - 2014
The studies investigating the effects of green tea on blood pressure (BP) have generated inconsistent results. The aim of this study is to quantitatively evaluate the effects of green tea on BP control. PubMed, Embase, and the Cochrane Library (updated to March 2014) were searched for randomized controlled trials evaluating ...
Joyeux-Faure Marie M University Grenoble Alpes, HP2, Inserm U1042, Grenoble, France ; CHU de Grenoble, Laboratoire EFCR, Clinique Universitaire de Physiologie, Grenoble, - - 2014
Rationale. Accumulated evidence implicates sympathetic activation as inducing oxidative stress and systemic inflammation, which in turn lead to hypertension, endothelial dysfunction, and atherosclerosis in obstructive sleep apnea (OSA). Statins through their pleiotropic properties may modify inflammation, lipid profile, and cardiovascular outcomes in OSA. Methods. This multicenter, randomized, double-blind study compared ...
Gebremedhn Endale G EG Department of Anesthesia, School of Medicine, Gondar College of Medicine and Health Sciences, University of Gondar, Gonder, - - 2014
Rapid sequence induction and intubation (RSII) is a medical procedure involving a prompt induction of general anesthesia by using cricoid pressure that prevents regurgitation of gastric contents. The factors affecting RSII are prophylaxis for aspiration, preoxygenation, drug and equipment preparation for RSII, ventilation after induction till intubation and patient condition. ...
Viqueira Villarejo María M Deustotech Life Department, University of Deusto, Bilbao 48007, - - 2014
This paper describes a study dealing with a technological solution to measure gait quality in people suffering from multiple sclerosis (MS) by selecting objective parameters that focus on their step. Android mobile technology, online services and four wireless pressure sensors are used in concert for this purpose. The objective of ...
Argyri Anthoula A AA Hellenic Agricultural Organization-DEMETER, Institute of Technology of Agricultural Products, Sof. Venizelou 1, Lycovrissi, 14123 Athens, - - 2014
Green fermented olives cv. Halkidiki were subjected to different treatments of high hydrostatic pressure (HHP) processing (400, 450, and 500 MPa for 15 or 30 min). Total viable counts, lactic acid bacteria and yeasts/moulds, and the physicochemical characteristics of the product (pH, colour, and firmness) were monitored right after the treatment and ...
Saritas Z K - - 2014
The study included 12 clinically healthy, adult male dogs of various breeds, admitted to our clinic for castration. After general anesthesia with sevoflurane, we administered epidural fentanyl (1 mcg/kg) to fentanyl group, while lidocaine group was given Lidocaine (3 mg/kg) through epidural administration. When hemodynamic parameters were stabilized, first measurements ...
Kashefi Parviz P Department of Anesthesia, Medical School, St-Alzahra Medical Center, Isfahan University of Medical Sciences, Isfahan, - - 2014
The aim of this study was to examine the effects of preoperatively administered i.v. hypertonic saline on hypotension following induction of general anesthesia. Fifty-four patients who scheduled for elective surgery were randomly allocated to two groups of 27 patients who received hypertonic saline 5% (2.3 ml/kg) or received normal saline ...
Chen Lisa Y LY Department of Electrical Engineering, Stanford University, Stanford, California 94305, - - 2014
Continuous monitoring of internal physiological parameters is essential for critical care patients, but currently can only be practically achieved via tethered solutions. Here we report a wireless, real-time pressure monitoring system with passive, flexible, millimetre-scale sensors, scaled down to unprecedented dimensions of 1 × 1 × 0.1 cubic millimeters. This ...
Rizkallah Jacques J Department of Medicine, section of Cardiology, University of Manitoba, Winnipeg, Manitoba, - - 2014
Noninvasive evaluation of central venous pressure (CVP) can be achieved by assessing the Jugular Venous Pressure (JVP), Peripheral Venous Collapse (PVC), and ultrasound visualization of the inferior vena cava. The relative accuracy of these techniques compared to one another and their application by trainees of varying experience remains uncertain. We ...
Değirmenci Hüsnü H Department of Cardiology, Mengücek Gazi Education and Research Hospital, Erzincan University, Erzincan, - - 2014
Background We aimed to examine the correlation among nighttime blood pressure, heart rate variability, and left atrium peak systolic global longitudinal strain among patients with subjective tinnitus. Material and Methods Eighty patients with tinnitus were assigned to Group 1 and 80 healthy individuals were assigned to Group 2. Clinical blood ...
Fish Emily E Department of Anesthesia, Critical Care, & Pain Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, - - 2014
Optimal ventilator management for patients with acute respiratory distress syndrome (ARDS) remains uncertain. Lower tidal volume ventilation appears to be beneficial, but optimal management of positive end-expiratory pressure (PEEP) remains unclear. The Esophageal Pressure-Guided Ventilation 2 Trial (EPVent2) aims to examine the impact of mechanical ventilation directed at maintaining a ...
Chen Zhiqing Z Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, - - 2014
This study aimed to quantify arterial volume distensibility in patients with branch retinal vein occlusion (BRVO) in comparison with normal subjects and to investigate factors associated with their differences. 40 normal subjects and 30 BRVO patients were studied. Brachial-ankle pulse wave velocity (baPWV) was measured to determine arterial volume distensibility. ...
Gogus Nermin N Anesthesiology and Reanimation Clinic, Ankara Numune Training and Research Hospital, Ankara, - - 2014
Laryngoscopy and intubation can cause hemodynamic response. Various medications may be employed to control that response. In this study, we aimed to compare the effects of dexmedetomidine, fentanyl and esmolol on hemodynamic response. Ninety elective surgery patients who needed endotracheal intubation who were in American Society of Anesthesiology I-II group ...
Oksar Menekse M Department of Anesthesiology and Reanimation, Ankara Ataturk Training and Research Hospital, Ankara, Turkey. Electronic address: - - 2014
Although many features of robotic prostatectomy are similar to those of conventional laparoscopic urological procedures (such as laparoscopic prostatectomy), the procedure is associated with some drawbacks, which include limited intravenous access, relatively long operating time, deep Trendelenburg position, and high intra-abdominal pressure. The primary aim was to describe respiratory and ...
Bardgett Megan E - - 2013
Development of angiotensin II (Ang II)-dependent hypertension involves microglial activation and proinflammatory cytokine actions in the hypothalamic paraventricular nucleus (PVN). Cytokines activate receptor signaling pathways that can both acutely grade neuronal discharge and trigger long-term adaptive changes that modulate neuronal excitability through gene transcription. Here, we investigated contributions of PVN ...
Güven Ozlem O Department of Anesthesiology and Reanimation, Atatürk Chest Diseases and Thoracic Surgery Education and Research Hospital, Ankara, - - 2013
Many studies focusing on the effects of local anaesthetics on QT intervals have been performed, but the articles evaluating the relationship between thoracic epidural anaesthesia combined with general anaesthesia and QT parameters are very limited. We aimed to compare the effects of bupivacaine and ropivacaine on QT interval, corrected QT, ...
Chang Jason J JJ Department of Neurology, University of Southern California, - - 2013
Intracerebral hemorrhage is associated with poor clinical outcome and high mortality. Research and treatment modalities have focused on the expansion of the primary hematoma through blood pressure control and activation of coagulation factors. However, clinical trials have failed to show decreased rates of death or disability in intracerebral hemorrhage following ...
Fitta Magdalena - - 2013
A comprehensive study of magnetocaloric effect (MCE) and critical behaviour in the ferrimagnetic Mn2-pyridazine-[Nb(CN)8] molecular magnet under hydrostatic pressure is reported. The pressure-induced structural changes provoke the strengthening of magnetic interaction between Mn and Nb centres. Consequently, an increase of critical temperature Tc is observed from 43 K for a sample at ambient ...
Yue Yun-Hua YH Department of Neurology, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, - - 2013
We sought to study the blood pressure variability statuses among different subtypes of acute ischemic stroke. From July 2009 to July 2011, 226 acute ischemic stroke patients aged 66.2±11.9 years, including 128 men and 98 women, were enrolled from the Departments of Neurology and Emergency at Urumqi Friendship Hospital. Based ...
Zhao Hong Jian - - 2013
First-principles calculations are performed to investigate structural and magnetic behaviors of rare-earth orthochromates as a function of 'chemical' pressure (that is, the rare-earth ionic radius), epitaxial misfit strain and hydrostatic pressure. From a structural point of view, (i) 'chemical' pressure significantly modifies antipolar displacements, Cr-O-Cr bond angles and the resulting oxygen ...
Elli Murat M *Department of Pediatric Oncology, Medical Faculty, Ondokuz Mayis University, Samsun 55039, Turkey. - - 2013
Wilms' tumor, or nephroblastoma, is the most common primary malignant renal tumor of childhood. The excellent outcome now expected for most children with this tumor is attributed to the combination of effective adjuvant chemotherapy, improved surgical and anesthetic techniques and also the radiosensitivity of the tumor. The numerous organ systems ...
Podduturi Vishwa Priya - - 2013
Determining the factors that influence the delivery of sub-micron particles to tumors and understanding the relative importance of each of these factors is fundamental to the optimization of the particle delivery process. In this paper, a model that combines random walk with the pressure driven movement of nanoparticles in a ...
Akıncı Ibrahim Özkan IÖ Department of Anaesthesiology and Intensive care, İstanbul University İstanbul Medical Faculty, İstanbul, - - 2013
Mechanical ventilation (MV) may induce lung injury. To assess and evaluate the role of different mechanical ventilation strategies on ventilator-induced lung injury (VILI) in comparison to a strategy which includes recruitment manoeuvre (RM). Randomized animal experiment. Thirty male Sprague-Dawley rats were anaesthetised, tracheostomised and divided into 5 groups randomly according ...
Kwok Sit Yee - - 2013
Catecholamine-associated cardiomyopathies caused by neuroblastoma have rarely been reported. We are reporting 2 cases of neuroblastoma associated with hypertension and severe cardiomyopathic changes in different extremes. One case was dilated cardiomyopathy with heart failure, and the other showed echocardiographic features simulating hypertrophic obstructive cardiomyopathy. Both girls had high levels of ...
Suzuki Sumihiro - - 2013
Thermodynamic stability boundary of structure-H hydrates with large guest species and methane (CH4) at extremely high pressures has been almost unclear. In the present study, the four-phase equilibrium relations in the structure-H CH4+1,1,2,2,3,3,4-heptafluorocyclopentane (1,1,2,2,3,3,4-HFCP) mixed hydrate system were investigated in a temperature range of (281.05 to 330.12) K and a ...
Dasilva Jack G - - 2013
The magnetic properties of [Fe(III)Cp*2]˙(+)[HCBD]˙(-) (Cp* = pentamethylcyclopentadienide; HCBD = hexacyanobutadienide, C4(CN)6) and [Fe(III)Cp*2]˙(+)[DDQ]˙(-) (DDQ = 2,3-dichloro-5,6-dicyanoquinonide) were measured at ambient and applied hydrostatic pressures up to 11.4 and 9.2 kbar, respectively. At ambient pressure [FeCp*2][HCBD] exhibits spin glass-like behavior with a freezing temperature, Tf, of 2.93 K from the ...
Ansari Mohammad Ali - - 2013
Diffuse optical tomography (DOT) is an emerging oncological imaging modality that is based on a near-infrared optical technique. DOT provides the spatial volume and depth of tumors by determination of optical properties of biological tissues, such as the absorption and scattering coefficients. During a DOT, the optical fibers are kept ...
Legrand V - - 2013
The magnetic symmetry and structure of the non-Fermi liquid heavy fermion compound CeNiGa2 has been determined by neutron powder diffraction. The orthorhombic CeNiGa2 compound orders antiferromagnetically below 4.4(2) K at ambient pressure with a magnetic moment magnitude of μCe = 0.80(4) μB for moments aligned along the c-axis. The magnetic (Shubnikov) space group is ...
Dasilva Jack G - - 2013
The pressure dependence of the magnetic properties of ferrimagnetic Mn(II)(TCNE)I(OH2) up to 14.05 kbar and Mn(II)(TCNE)3/2(I3)1/2·zTHF up to 14.32 kbar were studied. For Mn(II)(TCNE)I(OH2), two distinct pressure regions separated at ∼1 kbar were evident in both the temperature and the field-dependent magnetic measurements. No increase of the magnetic properties was ...
Borowski Allison M - - 2013
RATIONALE AND OBJECTIVES: The end point of chemoembolization for hepatocellular carcinoma is qualitative. We intended to determine the feasibility of measuring intra-arterial pressure changes after chemoembolization and hypothesized that pressures would increase in the distal hepatic artery after the procedure. MATERIALS AND METHODS: Before and after chemoembolization, systemic (S) systolic ...
Ramseyer Vanesa D VD Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital, Detroit, MI 48202, USA. - - 2013
Tumor necrosis factor-α (TNF-α) is a pleiotropic cytokine that becomes elevated in chronic inflammatory states such as hypertension and diabetes and has been found to mediate both increases and decreases in blood pressure. High levels of TNF-α decrease blood pressure, whereas moderate increases in TNF-α have been associated with increased ...
Hamann A - - 2013
In the prototypical heavy-fermion system CeCu_{6-x}Au_{x}, a magnetic quantum critical point can be tuned by Au concentration x, hydrostatic pressure p, or magnetic field B. A striking equivalence of the tuning behavior with x or p had been found with respect to thermodynamic and transport properties. By means of elastic ...
Garcia-Saiz Abel - - 2013
We report a combined study using magnetization and Raman spectroscopy on the magnetic ionic liquid 1-ethyl-3-methylimidazolium tetrachloroferrate, Emim[FeCl4]. This material shows a long-range antiferromagnetic ordering below the Néel temperature TN ≈ 3.8 K. The effects of pressure on the magnetic properties have been studied using a miniature piston-cylinder CuBe pressure ...
Zhou X - - 2013
We have studied the pressure-induced phase transitions from NaCl-type (B1) to CsCl-type (B2) structure in BaS, BaSe and BaTe by using ab initio density functional theory computations in the local density approximation. The Buerger and WTM mechanisms were explored by mapping the enthalpy contours in two- and four-dimensional configuration space ...
Vlaisavljevich Eli - - 2013
This paper is an initial work towards developing an image-guided, targeted ultrasound ablation technique by combining histotripsy with nanodroplets that can be selectively delivered to tumor cells. Using extremely short, high-pressure pulses, histotripsy generates a dense cloud of cavitating microbubbles that fractionates tissue. We hypothesize that synthetic nanodroplets that encapsulate ...
Arnberg Karina K Department of Nutrition, Exercise and Sports , University of Copenhagen , Rolighedsvej 30, 1958 Frederiksberg , - - 2013
Arterial stiffness, blood pressure (BP) and blood lipids may be improved by milk in adults and the effects may be mediated via proteins. However, limited is known about the effects of milk proteins on central aortic BP and no studies have examined the effects in children. Therefore, the present trial ...
Nooraei Navid N Department of Anesthesiology, Shahid Beheshti University of Medical - - 2013
Laryngoscopy and intubation incur hemodynamic changes like increase in heart rate, arterial blood pressure, pulmonary artery pressure, wedge capillary pressure and arrhythmias. Anesthesiologists are continually in search of ways to alleviate such complications. Several medicinal methods have been suggested that serve the purpose including the administration of intravenous magnesium sulfate ...
Santander Petra - - 2012
Swallowing disturbances are common after neurological disease and oropharyngeal tumor resection. In this case the oral stage is often affected. So far the clinical evaluation of the oral phase is limited. Recently the role of pressure changes during oropharyngeal swallowing has been pointed out, but until now there are not ...
Radulescu R T - - 2012
Hypertension ranks among the most important disease challenges on a global scale. Here, a novel hypothesis is presented which implicates angiotensinogen, i.e. the precursor protein for the hypertensive peptide angiotensin II, as a key culprit in the pathogenesis of hypertension. This hypothesis more precisely entails that intracellular angiotensinogen binds and ...
Fraysse Guillaume - - 2012
We report unprecedented dramatic changes in the 647.1 nm Raman signal of PbZr(0.6)Ti(0.4)O(3) occurring in the same pressure ranges as the critical pressures of the antiferrodistortive and ferroelectric-paraelectric phase transitions. This huge decrease in intensity of both the Raman modes and the background, observed for both pressure transmitting media used ...
Yang Seung Yun - - 2012
Diamond-anvil cell, pressure-tuning infrared (IR), and Raman microspectroscopic measurements have been undertaken to examine the effects of high pressures up to about 45 kbar on the vibrational spectra of the four DNA bases, adenine, cytosine, guanine, and thymine. Small structural changes were evident for all the four bases, viz., for adenine ...
Zhang Xinxin - - 2012
The high-pressure crystal structures of the "111" type iron-based superconductors: NaFeAs, LiFeP and LiFeAs have been systematically explored by using particle-swarm structural searches. It was found that though these iron-based superconductors are chemically similar, they adopted distinct structural phase transitions: P4/nmm → Cmcm → P3[combining macron]m1 for NaFeAs, P4/nmm → ...
Blake E - - 2012
Topical protoporphyrin (PpIX)-induced photodynamic therapy (PDT) relies on the penetration of the prodrug into the skin lesion and subsequent accumulation of the photosensitizer. Methyl aminolevulinate (MAL)-PDT is an established treatment for thinner and superficial non-melanoma skin cancers (NMSCs) but for the treatment of the thicker nodular basal cell carcinoma (nBCC) ...
Korfhagen Joseph J - - 2012
Transcranial ultrasound improves thrombolytic drug efficacy in ischemic stroke therapy. The goal of this study was to determine the ideal ultrasound parameters for obtaining peak rarefactional pressures exceeding the stable cavitation threshold at the left anterior clinoid process (lACP) of the skull. This location is near the origin of the ...
Kyle B - - 2012
Standard cardiorespiratory monitoring may fail to detect occult tissue ischaemia. This study assessed whether a near infra-red spectroscopy tissue oxygen saturation monitor (InSpectra™) could detect progressive peripheral tissue ischaemia and whether hyperoxia may confound tissue oxygen saturation measurement. Tissue oxygen and arterial oxygen saturations were measured continuously in 30 healthy ...
Forget P - - 2012
BACKGROUND: /st>Muscular compartment syndrome (MCS) is a rare but serious postoperative complication. In vivo optical spectroscopy (INVOS) monitors continuously and non-invasively regional oxygen saturation (rSO(2)), and could predict the development of MCS. METHODS: /st>In 10 healthy volunteers, we inflated a tourniquet to the mean arterial pressure to produce slight venous ...
Goktas Altan - - 2012
Objective: To evaluate the short-term impact of intravitreal ranibizumab injection on axial ocular dimension (AOD) and intraocular pressure (IOP). Methods: A total of 31 patients who received 0.05 mL intravitreal ranibizumab injection (IRI) for age-related macular degeneration and 30 healthy volunteers were enrolled in the study. AODs i.e. anterior chamber depth ...
1 2 3 4 5 6 7 8 9 10 >