Search Results
Results 1 - 50 of 3050
1 2 3 4 5 6 7 8 9 10 >
Do Thi Thanh - - 2014
Dengue fever (DF) has been emerging in Hanoi over the last decade. Both DF epidemiology and climate in Hanoi are strongly seasonal. This study aims at characterizing the seasonality of DF in Hanoi and its links to climatic variables as DF incidence increases from year to year. Clinical suspected cases ...
Abe Toshikazu T Department of Emergency and Critical Care Medicine, Mito Kyodo General Hospital, University of Tsukuba, Ibaraki, - - 2014
A 59-year-old man with end-stage renal disease was brought to our emergency department with complaints of headache, nausea, dysarthria, tic, and weakness involving the bilateral arms and legs. He had the similar episode 4 month before, when he was treated elsewhere. The patient had received hemodialysis three times per week. ...
Xiao Jianwei J State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China. - - 2014
Cadmium sulfide (CdS) is one of the most significant wide band gap semiconductors, and knowledge of the phase transformation of CdS under high temperature and pressure is especially important for its applications. The pressure-temperature phase diagram and the phase transformation pathways of CdS have been investigated by using density functional ...
Arima Hisatomi H The George Institute for Global Health, University of Sydney, Sydney, New South Wales, - - 2014
There is ongoing controversy regarding a 'J-curve' phenomenon such that low and high blood pressure (BP) levels are associated with increased risks of recurrent stroke. We aimed to determine whether large treatment-related BP reductions are associated with increased risks of recurrent stroke. Data are from the PROGRESS trial, where 6105 ...
Estol Conrado J - - 2014
Epidemiological studies show that vascular risk factors are the same across the world but their effect vary between different race-ethnic groups. However, few studies have evaluated differences in recurrent stroke rates in various race-ethnicities. In >20 000 patients spanning 35 countries encompassing most race-ethnicities, we evaluated the incidence of ischemic and ...
Musfeldt J L - - 2013
This work brings together diamond anvil cell techniques, vibrational spectroscopies, and complementary lattice dynamics calculations to investigate pressure-induced local lattice distortions in α-Co[N(CN)2]2. Analysis of mode behavior and displacement patterns reveals a series of pressure-driven transitions that modify the CoN6 counter-rotations, distort the octahedra, and flatten the C-Nax-C linkages. These ...
Bendele M - - 2013
The local structure and the electronic properties of FeSe under hydrostatic pressure were studied by means of dispersive x-ray absorption measurements at the Fe K-edge. The pressure dependence of the x-ray absorption near edge structure features seems to follow the behavior of the superconducting transition temperature Tc. The local structure, ...
Watabe Teruaki - - 2013
Proteins adapt to novel environments and/or gain function by substitution in amino-acid sequences. Therefore, mutations in protein-coding genes are subject to selection pressure. The strength and character of selection pressure may vary among the regions of the protein. Thus, the spatial distribution of selection pressure provides information on the adaptive ...
Suzuki Asaha - - 2013
Cells of Saccharomyces cerevisiae express the two tryptophan permeases Tat1 and Tat2, which have different characteristics in terms of their affinity for tryptophan and intracellular localization. Although the high-affinity permease Tat2 has been well documented in terms of its ubiquitin-dependent degradation, the low-affinity permease Tat1 has not yet been fully ...
Humphries Terry D - - 2013
The direct synthesis of NaAlH4 has been studied, for the first time, by in situ(27)Al and (23)Na wide-line NMR spectroscopy using high pressure NMR apparatus. Na3AlH6 formation is observed within two minutes of hydrogen addition, while NaAlH4 is detected after a total of four minutes. This indicates the formation of ...
Mihailova B - - 2013
The pressure-induced phase transition sequence in PbSc(0.5)Ta(0.5)O(3) (PST) and PbSc(0.5)Nb(0.5)O(3) (PSN) heavily doped with homo- and heterovalent cations on the A- or B-site of the perovskite-type structure (ABO(3)) was analysed by in situ synchrotron x-ray diffraction and Raman spectroscopy up to pressures of 25 GPa. We focused on the structural phenomena ...
Wei Wenhua - - 2013
Local interactions between neighbouring SNPs are hypothesized to be able to capture variants missing from genome-wide association studies (GWAS) via haplotype effects but have not been thoroughly explored. We have used a new high-throughput analysis tool to probe this underexplored area through full pair-wise genome scans and conventional GWAS in ...
Black S Lucas - - 2013
Despite the fact that much of the global microbial biosphere is believed to exist in high pressure environments, the effects of hydrostatic pressure on microbial physiology remain poorly understood. We use a genome-wide screening approach, combined with a novel high-throughput high-pressure cell culture method, to investigate the effects of hydrostatic ...
Musialik Wojciech - - 2012
INTRODUCTION: Oesophageal speech were described for the first time by Gutzmann in 1909. The diagnostic method based upon checking the pressure causing opening of oesophagus mouth was developed by Seeman and Van Den Bergh. In the initial stage, the method was meant to determine the level, to which the patient ...
Xiong Shuping - - 2012
The psychophysical relationship between the magnitude of pressure on thirteen test locations of twenty healthy subjects' feet with four probe areas at three indentation speeds and the corresponding perceived sensations were analyzed. The dependency of pressure pain thresholds (PPT) on area, A, and speed, v, can be mathematically modeled in ...
Zimmermann Matthias R - - 2012
Collection of cucurbit exudates from cut petioles has been a powerful tool for gaining knowledge on phloem-sap composition without full notion of the complex exudation mechanism. Only few publications explicitly mentioned that exudates were collected from the basal side of the cut which exudes more copiously than the apical side. ...
Chen Hui - - 2012
Objectives: To investigate the feasibility of Electroencephalogram (EEG) power spectrum analysis as a noninvasive method for monitoring intracranial pressure (ICP). Methods: The EEG signals were recorded in 62 patients (70 cases) with central nervous system (CNS) disorders in our hospital. By using self-designed software, EEG power spectrum analysis was conducted ...
Grignard Bruno - - 2012
A novel setup is described to monitor the kinetics of homogeneous and heterogeneous reactions online using Raman spectroscopy under high pressure. The arrangement is based on a high-pressure reactor equipped with a sapphire window in combination with a mobile probe that allows the collection of the back-scattered Raman signal at ...
Ishii Kohei - - 2012
It is desirable to obtain the maximum assist without suction in ventricular assist devices (VADs). However, high driving power of a VAD may cause severe ventricle suction that can induce arrhythmia, hemolysis, and pump damage. In this report, an appropriate VAD driving level that maximizes the assist effect without severe ...
Davis Eric James - - 2012
Security and military applications of analytical techniques demand a small, rugged, reliable instrument that has traditionally been served well by atmospheric pressure ion mobility spectrometry (IMS) systems. Modern threats stipulate these instruments must reliably operate in increasingly complex environments. Previous work has demonstrated that increasing the pressure of an IMS ...
Fan Feng-Ru - - 2012
Transparent, flexible and high efficient power sources are important components of organic electronic and optoelectronic devices. In this work, based on the principle of the previously demonstrated triboelectric generator, we demonstrate a new high-output, flexible and transparent nanogenerator by using transparent polymer materials. We have fabricated three types of regular ...
Yip Ngai Yin - - 2012
The Gibbs free energy of mixing dissipated when fresh river water flows into the sea can be harnessed for sustainable power generation. Pressure retarded osmosis (PRO) is one of the methods proposed to generate power from natural salinity gradients. In this study, we carry out a thermodynamic and energy efficiency ...
Ryan John J - - 2012
Accurate measurement of left ventricular filling pressure is important to distinguish between category 1 pulmonary arterial hypertension (PAH) and category 2 pulmonary hypertension (PH) from left heart diseases (PH-HFpEF). We hypothesized that the common practice of relying on the digitized mean pulmonary capillary wedge pressure (PCWP-digital) results in erroneous recordings, ...
Ayodele O E - - 2012
One of the observer errors associated with blood pressure (BP) measurement using a mercury sphygmomanometer is end digit preference (EDP) which refers to the occurrence of a particular end digit more frequently than would be expected by chance alone. Published reports, mainly from outside Africa, have shown a high prevalence ...
Lee Hyun Kyung - - 2012
Silicon nanoparticles were synthesized by passing monosilane through a quartz tube wrapped with Inductive Coupled Plasma (ICP) coil. Microstructures of synthesized silicon nanoparticles were investigated with various process conditions. To research the effects of process parameters on the properties of nanoparticles, we verified the partial pressure of monosilane, the plasma ...
Wang Rongrong - - 2012
BACKGROUND: Changes in instrumental color parameters, chlorophyll a and b, activity of chlorophyllase, Mg-dechelatase, peroxidase and polyphenol oxidase, total phenolic compounds and pH of spinach purée were assessed after high hydrostatic pressure (HHP) (200, 400 and 600 MPa for 5, 15 and 25 min) treatments at room temperature. RESULTS: HHP ...
Kamat Pradip P Division of Critical Care, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA. - - 2012
Pediatric acute liver failure is often accompanied by hepatic encephalopathy, cerebral edema, and raised intracranial pressure. Elevated intracranial pressure can be managed more effectively with intracranial monitoring, but acute-liver-failure-associated coagulopathy is often considered a contraindication for invasive monitoring due to risk for intracranial bleeding. We reviewed our experience with use ...
Oliveira Sandra C T - - 2011
Ultrahigh hydrostatic pressure (UHP) was applied to enhance the enzymatic hydrolysis of xylan in cellulosic fibers. The pretreatment improved xylan accessibility in the fiber cell wall and a 5-10-fold increase in the initial hydrolysis rate of xylan by xylanase was observed when Eucalyptus globulus kraft bleached pulp was pretreated at ...
Yi Jianyong - - 2011
High hydrostatic pressure (HHP, treatment pressure≤700 MPa) is approved to be the most successful commercial non-thermal processing due to its minimal modifications in nutritional and sensory quality. However, for some pressure stable enzymes such as PPO, this unique technology can hardly inactivate them at treatment pressure below of 700 MPa. ...
Bak Kathrine Holmgaard - - 2011
Color changes of minced cured restructured ham was studied considering the effects of high pressure (HP) treatment (600MPa, 13°C, 5min), raw meat pH(24) (low, normal, high), salt content (15, 30g/kg), and drying (20%, 50% weight loss). Raw hams were selected based on pH(24) in Semimembranosus, mixed with additives, frozen, sliced, ...
Lin Yu - - 2011
Compressing glassy carbon above 40 GPa, we have observed a new carbon allotrope with a fully sp^{3}-bonded amorphous structure and diamondlike strength. Synchrotron x-ray Raman spectroscopy revealed a continuous pressure-induced sp^{2}-to-sp^{3} bonding change, while x-ray diffraction confirmed the perseverance of noncrystallinity. The transition was reversible upon releasing pressure. Used as an ...
Jin Yusung - - 2011
We investigated the adsorption and desorption of CO2 on activated carbon using piezoelectric microcantilevers. After coating the free end of a cantilever with activated carbon, variations in the resonance frequency of the cantilever were measured as a function of CO2 pressure, which is related to mass changes due to the ...
Rauch Stefan - - 2011
Evaluation of gastric pH and motility in a porcine model of acute lung injury using a novel, wireless motility capsule. A motility capsule was applied into the stomach of 7 Pietrain pigs with acute lung injury induced by high volume saline lavage. Wireless transmission of pH, pressure and temperature data ...
Lucianetti Antonio - - 2011
We illustrate the benefits of a thin, low pressure helium cell for efficient and safe heat removal in cryogenically-cooled active mirror laser amplifiers operating in the [100 J-1 kJ] / [1-10 Hz] range. A homogeneous gain medium temperature distribution averaging 160 K is obtained with a sub-mm helium-filled gap between ...
Valenza F - - 2011
Ex vivo lung perfusion (EVLP) has been recently proposed to recondition organs before transplantation from donors with marginal or unacceptable features. The aim of our investigation was to explore glucose consumption during EVLP. We investigated 8 domestic pigs (mean weight, 21 ± 0.8 kg). After perfusion with Perfadex, retrieval, and ...
Demarzo Arthur P - - 2011
BACKGROUND: Early detection of cardiovascular disease in patients with hypertension could initiate appropriate treatment to control blood pressure and prevent the progression of cardiovascular disease. OBJECTIVE: The goal of this study was to show how impedance cardiography waveform analysis with postural change can be used to detect subclinical cardiovascular disease ...
Diroll Anne - - 2011
Weir articulates it best in his editorial commentary in Hypertension: "Ultimately, the main goal of treatment of blood pressure is to prevent cardiac events. Perhaps the most important strategy in the dialysis patient is to achieve an appropriate dry weight, minimize volume overload, and use blood pressure-lowering medications only in ...
Iwakura Katsuomi - - 2011
We investigated the relation between left ventricular diastolic dysfunction and left atrial appendage (LAA) thrombus in patients with atrial fibrillation (AF). We performed transesophageal echocardiography to examine LAA thrombus or spontaneous echo contrast (SEC) and to measure LAA emptying flow velocity in consecutive 376 patients with AF. We estimated diastolic ...
Shantsila Alena - - 2011
Endothelial dysfunction is characteristic of patients with essential hypertension, but only limited data are available on different aspects of endothelial function in patients with malignant-phase hypertension. We investigated myocardial perfusion using real-time quantitative myocardial contrast echocardiography with concurrent assessment of macrovascular and microvascular endothelial damage/dysfunction in patients with previous malignant ...
Katsi Vasiliki - - 2011
BACKGROUND: The fundoscopic examination of hypertensive patients, an established hypertension-related target organ damage, tends to be underutilized in clinical practice. We sought to investigate the relationship between retinal alterations and aortic stiffness, an independent predictor of cardiovascular morbidity and mortality. METHODS: Our population consisted of 197 consecutive essential hypertensive patients ...
Bakalli Aurora - - 2011
Abstract Arterial hypertension complicated with atherosclerosis presents the most common cause of death in hypertensive patients. Eyes suffer vascular damage as a result of high blood pressure (BP) and these changes can be detected by funduscopy, although its role has recently been questioned. The aims of this study were to ...
Gjata Margarita - - 2011
The study's aim was to evaluate the relations between pulse pressure (PP), hypertension and anemia with left ventricular hypertrophy (LVH). The risk factors and prevalence of LHV were evaluated in 111 patients with CRF. LVH was diagnosed in 81.9% of all patients. The prevalence of hypertension was 72.6%. Anemia was ...
Sapa Jacek - - 2011
The compound MG-1(R,S), (1-[2-hydroxy-3(4-phenyl-1-piperazinyl)propyl]-pyrrolidin-2-one, and its enantiomers were tested for electrocardiographic, antiarrhythmic and hypotensive activities. The racemic mixture (MG-1(R,S)) and its S-enantiomer significantly decreased systolic and diastolic blood pressure and possessed antiarrhythmic activity. The S-enantiomer displayed the greatest effect. The R-enantiomer did not show antiarrhythmic or hypotensive activity. The results ...
Heffernan Kevin S KS Hypertrophic Cardiomyopathy Center, Division of Cardiology, Molecular Cardiology Research Institute, Tufts Medical Center, Boston, Massachusetts, USA. - - 2011
Almost one third of patients with hypertrophic cardiomyopathy (HC) will have an abnormal blood pressure response (ABPR) to exercise, and this has been associated with a greater risk of sudden cardiac death. In the present study, we examined the association between the steady (mean arterial pressure) and pulsatile (pulse pressure) ...
Juang Yu-Min - - 2010
Chondrocytes are the only cell type present in mature articular cartilage (2-5% of total tissue). The biological activities of the chondrocyte population are regulated by genetic, biologic and biochemical factors, as well as environmental factors (stress, flow and electric field). Although compressive forces within joint articular cartilage are required for ...
Nguyen Thi Minh Hue - - 2010
In this study, we investigated the mechanisms of spore inactivation by high pressure at moderate temperatures to optimize the sterilization efficiency of high-pressure treatments. Bacillus subtilis spores were first subjected to different pressure treatments ranging from 90 to 550 MPa at 40°C, with holding times from 10 min to 4 ...
Rothamer David A - - 2010
A new diagnostic technique for measurements of temperature and pressure distribution in gaseous flows has been developed. The technique, based on infrared planar laser-induced fluorescence (IR-PLIF), is applicable to all IR-active species. A simple two-line excitation approach is used for measurements of temperature, while pressure measurements utilize online excitation on ...
Schroer Martin A - - 2010
A structural interpretation of the thermodynamic stability of proteins requires an understanding of the structural properties of the unfolded state. High-pressure small-angle x-ray scattering was used to measure the effects of temperature, pressure, denaturants, and stabilizing osmolytes on the radii of gyration of folded and unfolded state ensembles of staphylococcal ...
Mangiacapra Fabio - - 2010
In previous studies on the effect of renal stenting on arterial hypertension, patients were selected mainly on the basis of angiographic parameters of the renal artery stenosis. The aim of the present study was to evaluate whether translesional pressure gradients could identify the patients with renal artery stenosis who might ...
Faghihi S - - 2010
Aseptic loosening induced by wear particles from artificial bearing materials is one of the main causes of malfunctioning in total hip replacements. With the increase in young and active patients, complications in revision surgeries and immense health care costs, there is considerable interest in wear-resistant materials that can endure longer ...
1 2 3 4 5 6 7 8 9 10 >