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Results 251 - 300 of 2067
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Wlodarczyk P - - 2011
Molecular dynamics of glibenclamide and glimepiride in their glassy state were studied by means of broadband dielectric spectroscopy. In both compounds we found a γ-relaxation process, with nearly the same value of activation energy. Further, we were able to identify the origin of γ relaxation by performing calculations within the ...
Vaschillo Evgeny G - - 2012
The arterial baroreflex system (BRS) consists of at least three closed-loop control systems: the heart rate (HR), vascular tone (VT), and stroke volume (SV) BRSs. Whereas HR-BRS gain is well studied, VT-BRS and SV-BRS gain are not. This study aimed to develop a method for quantifying VT-BRS and SV-BRS gain ...
Knoche Sebastian - - 2011
We investigate buckling of soft elastic capsules under negative pressure or for reduced capsule volume. Based on nonlinear shell theory and the assumption of a hyperelastic capsule membrane, shape equations for axisymmetric and initially spherical capsules are derived and solved numerically. A rich bifurcation behavior is found, which is presented ...
Muhlestein Michael B - - 2011
Previous research involved investigating a characteristic shock formation distance for Gaussian, finite-amplitude noise propagating in a cylindrical plane wave tube [Muhlestein and Gee, POMA 12, (in press)]. In particular, the evolution of the probability density function of the pressure and the first-order time derivative of pressure along with the skewness ...
Deignan Brian J - - 2011
: Burns and pressure sores are common injuries during cast application. Various factors such as water temperature, padding, and cast material layers may play a role in these injuries; however, the effect of cast molding on temperatures and pressures has not been investigated. This raises the following questions, does the ...
Bhatta Ambika - - 2011
A new representation of the scattered pressure of a point source due to infinite rigid wedge is derived by simplifying the Bessel functions in the modal solution and by implementing the image based representation of the source. The solution comprises of six impulses contributing to the reflected and transmitted pressure ...
Pravica Michael - - 2011
We have developed and demonstrated a novel method to load oxygen in a sealed diamond anvil cell via the x-ray induced decomposition of potassium chlorate. By irradiating a pressurized sample of an oxidizer (KClO(3)) with either monochromatic or white beam x-rays from the Advanced Photon Source at ambient temperature and ...
Benchimol Michael J - - 2011
Certain nanoparticles act as nucleation sites for acoustic cavitation. Their surface roughness and hydrophobic regions can decrease the pressure required to induce the cavitation event. This concept has been examined for potential to provide a sensitizer for high-intensity focused ultrasound (HIFU), where cavitation can be beneficial. While passive cavitation detection ...
Cain Jericho - - 2011
Wind turbines can be damaged by the inflow of high amplitude wind turbulence. The goal of this project is to determine if potentially damaging turbulent structures at hub height can be detected by infrasonic wind noise measurements at the ground. A large eddy simulation is used to model the atmospheric ...
Schwartz Richard Bruce - - 2011
Abstract Background. Uncontrolled hemorrhage remains the primary cause of preventable battlefield mortality and a significant cause of domestic civilian mortality. Rapid hemorrhage control is crucial for survival. ChitoGauze and Combat Gauze are commercially available products marketed for rapid hemorrhage control. These products were selected because they are packable gauze that ...
Li Baosheng - - 2011
Elastic properties of materials under extreme conditions of pressure and temperature are of great interests to researchers in many disciplines. In the last decade, acoustic velocity measurements using an improved ultrasonic interferometry method have been developed in both MA-6 and MA-8 types of multi-anvil high pressure apparatus. By placing the ...
Hoder Tomáš - - 2011
The investigation of striated microdischarges in barrier discharges in argon at atmospheric pressure is reported. Microdischarges were investigated by means of electrical measurements correlated with intensified CCD camera imaging. The scaling law theory known from low-pressure glow discharge diagnostics was applied in order to describe and explain this phenomenon. The ...
Yun Jung-Yeon - - 2011
Unlike its use during stable conditions, central venous pressure (CVP) monitoring from a peripherally inserted central venous catheter (PICC) has not often been used in surgeries with significant hemodynamic alterations. The aim of this study was to evaluate the feasibility of measuring PICC pressure (PICCP) as an alternative to measuring ...
Sewell Philip - - 2011
OBJECTIVE: It has been recognised in a review of the developments of lower-limb prosthetic socket fitting processes that the future demands new tools to aid in socket fitting. This paper presents the results of research to design and clinically test an artificial intelligence approach, specifically inverse problem analysis, for the ...
Kolkman I - - 2011
Some anatomical characteristics of 507 Belgian Blue (BB) cattle, withers height (WH), heart girth (HG), the distance between the two tubera coxae (TcTc) and the distance between the two tubera ischiadica (TiTi), were compared with the internal pelvic measurements of width, height and area. Mean values were 58.9 ± 6.2 cm for TcTc, ...
Desai Neeraj R - - 2011
PURPOSE: Rapid shallow breathing index (RSBI) is conveniently measured through the ventilator. If continuous positive airway pressure (CPAP) is used, it may change the RSBI value. We measured the RSBI with a handheld spirometer and through the ventilator, with and without CPAP, to assess differences. MATERIALS AND METHODS: Rapid shallow ...
Iorio Brayner - - 2011
BACKGROUND: Preventing sudden changes in intraabdominal pressure (IAP) during surgical pneumoperitoneum may reduce adverse events. This study aimed to describe a valve system that stabilizes intraabdominal pressure, minimizing complications of erratic fluctuations in IAP. METHODS: Five male Sprague-Dowley rats were submitted to pneumoperitoneum, with the insufflator set sequentially at 5, ...
Boivin Jean-Marc - - 2011
OBJECTIVES: To assess the implementation of home blood pressure measurement (HBPM) by French general practitioners (GPs) in current practice in 2009 and to assess the evolution of practices between 2004 and 2009; the perceived benefits and limitations of the method; and the adherence to methodological European [European Society of Hypertension ...
Elsheikh Ahmed - - 2011
PURPOSE:: The purpose of the study was to evaluate the in vitro accuracy of correction factors in decreasing the error in the intraocular pressure (IOP) measurements obtained using the Goldmann Applanation Tonometer (GAT). METHODS:: Nineteen donor corneas, from individuals aged between 57 and 99 years (mean 75.7 years, standard deviation±11.4 ...
Messika-Zeitoun David - - 2011
BACKGROUND: Recent studies have emphasized the importance of quantitative assessment of the degree of aortic regurgitation (AR). However, semiquantitative methods have remained mainly used despite their unclear diagnostic value. The aim of this study was to define the sensitivity and specificity of semiquantitative methods compared with the proximal isovelocity surface ...
Carlsen Sven M - - 2011
Objective. To assess possible associations between androgen, estrogen and insulin levels and blood pressure in pregnant women after term, compared to the effect of other well-known factors. Design. Cross-sectional retrospective study. Setting. University Hospital, Trondheim region. Population. Four hundred and eighty-nine post-term women with uncomplicated pregnancies. Methods. Blood pressure measurements ...
Cattoni Diego I - - 2011
BACKGROUND: Enterocutaneous fistulae, pathological communications between the intestinal lumen and abdominal skin, can arise as serious complication of gastrointestinal surgery. A current non-surgical treatment for this pathology involves topical application of sub-atmospheric pressure, also known as vacuum assisted closure (VAC). While this technique appears to be promising, surgeons report about ...
Riede Tobias - - 2011
Vocalization is rare among non-avian reptiles, with the exception of the crocodilians, the sister taxon of birds. Crocodilians have a complex vocal repertoire. Their vocal and respiratory system is not well understood but appears to consist of a combination of features that are also found in the extremely vocal avian ...
Vimlati Laszlo - - 2011
Background:Spontaneous breathing (SB), when allowed during mechanical ventilation (MV), improves oxygenation in different models of acute lung injury. However, it is not known whether oxygenation is improved during mechanically unsupported SB. Therefore, we compared SB without any support with controlled MV at identical tidal volume (V(T)) and respiratory rate (RR) ...
Akins Jonathan S - - 2011
Previous studies have demonstrated that pressure, force, area, and time measurements can be reliably collected from pedobaragraphic platforms, but no studies have analyzed geometric measurements. The purpose of this study was to establish the test-retest reliability of geometric measurements obtained during gait at a self-selected speed using a two-step approach. ...
Kearney Rebecca S RS Warwick Orthopaedics, Division of Health Sciences, Warwick Medical School, Clinical Sciences Research Laboratories, University Hospital, Coventry, United Kingdom. - - 2011
Advances in the management of Achilles tendon rupture have led to the development of immediate weightbearing protocols. These vary regarding which ankle-foot orthoses (AFOs) are used and the number of inserted heel wedges used within them. This study was conducted to evaluate plantar pressure measurements and temporal gait parameters within ...
Vappou J J Ultrasound and Elasticity Imaging Laboratory, Columbia University, New York, NY, - - 2011
Central blood pressure (CBP) has been established as a relevant indicator of cardiovascular disease. Despite its significance, CBP remains particularly challenging to measure in standard clinical practice. The objective of this study is to introduce pulse wave-based ultrasound manometry (PWUM) as a simple-to-use, non-invasive ultrasound-based method for quantitative measurement of ...
Höstman S - - 2011
Oxygenation without tidal breathing, i.e. apnoeic oxygenation in combination with extracorporeal carbon dioxide removal, might be an option in the treatment of acute respiratory failure. However, ventilation with 100% O(2) , which is potentially toxic, is considered a prerequisite to ensure acceptable oxygenation. We hypothesized that trapping nitrogen (N(2) ) ...
Nakamura Takenobu - - 2011
We propose a novel method for computing the pressure tensor along the radial axis of a molecular system with spherical symmetry. The proposed method uses the slice averaged pressure to improve the numerical stability and precision significantly. Simplified expressions of the local pressure are derived for a conventional molecular force ...
Zhang Xinxin - - 2011
We report a joint experimental and theoretical study on high pressure structures of nanoporous mayenite (12CaO[middle dot]7Al(2)O(3)). A pressure-induced amorphization was identified at ∼13 GPa by in situ high pressure x-ray experiments. The amorphous product can be decompressed to ambient conditions. Ab initio calculations reveal that the anisotropic deformations of ...
Gleason Jonathan Lee - - 2011
The objective of this study was to determine the effect of external anal sphincter repair on fecal incontinence symptoms, quality of life, and anal sphincter squeeze pressures. The fecal incontinence symptoms and impact on quality of life, patient satisfaction, and anorectal manometry were assessed pre- and post-operatively. One hundred four ...
Hirai M - - 2011
OBJECTIVES: To compare the interface pressure and stiffness between various combinations of compression material. METHODS: Using a stiffness-determining device, the interface pressure and stiffness were determined in several combinations of five elastic stockings and two elastic bandages. RESULTS: In the double stockings system, the interface pressure increased significantly and the ...
Rocha Teresa - - 2011
This work proposes the application of neural network multi-models to the prediction of adverse acute hypotensive episodes (AHE) occurring in intensive care units (ICU). A generic methodology consisting of two phases is considered. In the first phase, a correlation analysis between the current blood pressure time signal and a collection ...
Tilling Kate - - 2011
Weight gain during infancy may programme later health outcomes, but examination of this hypothesis requires appropriate lifecourse methods and detailed weight gain measures during childhood. We examined associations between weight gain in infancy and early childhood and blood pressure at the age of 6.5 years in healthy children born at ...
Wu John Z - - 2011
Air-cushioned gloves have the advantages of lighter weight, lower cost, and unique mechanical performance, compared to gloves made of conventional engineering materials. The goal of this study is to analyze the contact interaction between fingers and object when wearing an air-cushioned glove. The contact interactions between the the fingertip and ...
Hosalkar Harish S - - 2011
This study outlines a relationship between joint volume, positioning, and intracapsular pressure in a healthy hip. After measuring the native intracapsular pressure in 12 porcine specimens, each joint was injected with radio-opaque-colored saline as pressures were measured. At 20 mmHg, the hip was placed in its position of ease and ...
Liu Saifei - - 2011
The delivery of gaseous microemboli (GME) by the cardiopulmonary bypass circuit should be minimized whenever possible. Innovations in components, such as the integration of arterial line filter (ALF) and ALFs with reduced priming volumes, have provided clinicians with circuit design options. However, before adopting these components clinically, their GME handling ...
Vesborg P C K - - 2011
The emission spectrum of mercury has a notable line at about 365 nm under both low and medium-high pressure conditions. A simple filter based on a solution of dysprosium ions, Dy(3+), is shown to be very useful for applications of Hg-light sources where this line is unwanted. The presented filter ...
Malik Madhur - - 2011
The internal jugular vein continues to be the preferred site for cannulation to monitor central venous pressure despite the reported evidence of the accuracy of external jugular venous pressure (EJVP) to reliably predict internal jugular venous pressure (IJVP). Internal jugular venous cannulation carries a risk of thrombosis that can be ...
Almodovar Jorge L - - 2011
Reliable, valid, and responsive outcomes for different aspects of Charcot-Marie-Tooth (CMT) neuropathy have become increasingly important in an emerging era of therapy development. Measures of the sensory component of CMT in particular are limited. One novel approach with potential applicability to CMT is non-invasive in vivo reflectance confocal microscopy (RCM) ...
Pippinger Thomas - - 2011
A novel diamond-anvil cell (DAC) design has been constructed and tested for in situ applications at high-pressure (HP) operations and has proved to be suitable even for HP sample environments at non-ambient temperature conditions. The innovative high-precision guiding mechanism, comparable to a dog clutch, consists of perpendicular planar sliding-plane elements ...
Ohura Takehiko - - 2011
A basic fibroblast growth factor (bFGF) case and a control case whose total scores of Pressure Ulcer Healing Process-Ohura (PUHP-Ohura) and risk factors for pressure ulcers, and level of care for pressure ulcers were equivalent were paired. Twenty-three such eligible pairs were enrolled in this study. Both cases in each ...
Xu Feng-Ying - - 2011
PURPOSE: The benefits of reducing blood pressure (BP) have been well established, but uncertainty remains about the comparative effects of different BP-lowering regimens. We aimed to estimate the efficacy and the tolerability of eprosartan compared with other agents as monotherapy. METHODS: PubMed, EMBASE, and Cochrane Library were searched for relevant ...
Soares Viviane - - 2011
The respiratory muscles can present fatigue and even chronic inability to generate force. So, reliable devices are necessary to their evaluation. The aim of this study is to evaluate the MEP (Maximal Expiratory Pressure) values of individuals between 20 and 25 years old and to validate a protocol using a ...
Mihailova Boriana - - 2011
The exceptional properties of lead-based perovskite-type (ABO(3)) relaxor ferroelectrics are due to their structural inhomogeneities. At ambient conditions, the average structure is pseudocubic but rich in ferroic nanoregions too small to be directly studied by conventional diffraction analysis. However, combining in situ temperature and pressure diffraction and Raman scattering allows ...
Scherpbier-de Haan Nynke - - 2011
Although blood pressure measurement is one of the most frequently performed measurements in clinical practice, there are concerns about its reliability. Serial, automated oscillometric blood pressure measurement has the potential to reduce measurement bias and white-coat effect'. To study agreement of 30-minute office blood pressure measurement (OBPM) with standardised OBPM, ...
Chen Li-Jen - - 2011
The contact pressure on the vocal fold surface during high pitch or amplitude voice production is believed to be one major source of phonotrauma. Models for the quantitative estimate of the contact pressure may be valuable for prevention and treatment. Various indirect and minimally invasive approaches have been purported to ...
Saladini Francesca - - 2011
To determine the accuracy of the WatchBP Office ABI monitor for blood pressure measurement developed by the Microlife Company. The device accuracy was tested in 85 subjects with a mean age of 54±19 years. Their systolic and diastolic blood pressure (SBP/DBP) at entry was 141±30/86±19 mmHg, and upper arm circumference ...
Dellamonica J - - 2011
Lung volumes, especially functional residual capacity (FRC), are decreased in acute respiratory distress syndrome (ARDS). Positive end-expiratory pressure (PEEP) contributes to increased end-expiratory lung volume (EELV) and to improved oxygenation, but differentiating recruitment of previously nonaerated lung units from distension of previously open lung units remains difficult. This study evaluated ...
Baglivo Hugo P - - 2011
The diagnosis and management of secondary hypertension has improved in the last decade as a result of the advances in the acknowledgment of some physiopathologic mechanisms and mainly by the development of new diagnostic methods. Furthermore, the treatment of some types of secondary hypertension may be solved by noninvasive techniques. ...
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