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Wang Yi - - 2013
Stress has been proved to acidulate amphoteric molecules and promote an intermolecular proton transfer, which results in a significant absorption and emission change. The stress acidulated amphoteric molecules open a new avenue for developing mechanochromic materials and anticipate many broad applications such as stress/pressure sensors and rewritable media.
- - 2013
Reports an error in "Mindfulness-Based Stress Reduction and Physiological Activity During Acute Stress: A Randomized Controlled Trial" by Ivan Nyklíček, Paula M. C. Mommersteeg, Sylvia Van Beugen, Christian Ramakers and Geert J. Van Boxtel (Health Psychology, Advanced Online Publication, Mar 25, 2013, np). An incorrect reference was mistakenly provided in ...
Bobrovskaya Larisa - - 2013
The principal aim of this study was to determine whether prolonged chronic footshock stress can evoke sustained changes in blood pressure in rats and to elucidate possible underlying neurochemical mechanisms as mediated by the sympathoadrenal system. Adult male Wistar rats instrumented for telemetric recording of arterial pressure, heart rate and ...
Wittmer J P - - 2013
Comparing isotropic solids and fluids at either imposed volume or pressure, we investigate various correlations of the instantaneous pressure and its ideal and excess contributions. Focusing on the compression modulus K, it is emphasized that the stress fluctuation representation of the elastic moduli may be obtained directly (without a microscopic ...
Wainwright Nicholas Wj - - 2013
BACKGROUND: Psychosocial stress is a risk factor for hypertension and has been shown to affect response to treatment for psychiatric illnesses. PURPOSE: We investigate the relationship between a history of social adversity experience and blood pressure control following antihypertensive medication use. METHODS: A total of 1,186 participants selected from the ...
Sari Yunita - - 2013
Deep tissue injuries (DTIs) can become significant problems because of their rapid deterioration into deep pressure ulcers. Presently, no animal model of DTI deterioration has been developed. By concentrating pressure and shear stress in deep tissues while minimising pressure and shear stress in the overlying skin, we produced an effective ...
Tian Lian - - 2013
Large conduit arteries are not purely elastic, but viscoelastic, which affects not only the mechanical behavior but also the ventricular afterload. Different hysteresis loops such as pressure-diameter, pressure-luminal cross-sectional area (LCSA), and stress-strain have been used to estimate damping capacity, which is associated with the ratio of the dissipated energy ...
Lee Jeffrey H JH Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital, Boston, MA, - - 2013
Fat grafting has become routine in plastic surgery because of low donor-site morbidity, a low complication rate, and fast recovery time. The optimal technique, however, has yet to be defined. Two critical variables are pressure and shear, both defined as force divided by area. In this study, the authors examined ...
Li Xin - - 2013
BACKGROUND: Although some studies mainly from Taiwan, Bangladesh and the United States, have suggested a consistent dose--response increase in the prevalence of hypertension with increasing arsenic exposure, the association between chronic environmental arsenic exposure and the risk of hypertension is still inconclusive. Most of the studies discussed the association from ...
Thubert Thibault - - 2013
OBJECTIVES: To assess the predictive value of a simple clinical test (posterior vaginal wall pull down maneuver) in the diagnosis of intrinsic sphincter deficiency. METHODS: The present prospective study included 62 women suffering from stress urinary incontinence. Every patient underwent a urogynecological examination including multichannel urodynamic testing (cystometry, urethral pressure ...
van Asselt Els - - 2013
Stress urinary incontinence, defined as involuntary loss of urine secondary to an increase in abdominal pressure, represents one of the most significant urological problems. Several animal models to simulate stress urinary incontinence have been presented, including methods to quantify leak point pressure. We have modified an existing leak point pressure ...
Bertulat S - - 2013
Sudden dry-off is an established management practice in the dairy industry. But milk yield has been increasing continuously during the last decades. There is no information whether the dry-off procedure, which often results in swollen and firm udders, causes stress, particularly in high-producing dairy cows. Therefore, we evaluated the effect ...
Ahmad Aquil - - 2013
Context: Oxidative Stress is caused by an imbalance between the production of reactive oxygen species and a biological system's ability to readily detoxify the reactive intermediates. Aims: 1. To compare the levels of Malondialdehyde (MDA), in hypertensive and normotensive subjects. 2. To compare the levels of the antioxidant enzymes, namely, ...
George Eric M - - 2013
During normal gestation, the placenta is a relatively hypoxic organ and, as such, is subject to significant oxidative stress. In the preeclamptic patient, inadequate remodeling of the maternal vasculature severely exacerbates placental oxidative stress, which has been shown to be an important component of maternal hypertension. There is emerging evidence ...
Lopes Marlene - - 2013
Yeast cells exposed to adverse conditions employ a number of defense mechanisms in order to respond effectively to the stress effects of reactive oxygen species. In this work, the cellular response of Yarrowia lipolytica and Pichia pastoris to the exposure to the ROS-inducing agents' paraquat, hydrogen peroxide, and increased air ...
Wirtz Petra H - - 2013
We investigated whether occupational role stress is associated with differential levels of the stress hormone cortisol in response to acute psychosocial stress. Forty-three medication-free nonsmoking men aged between 22 and 65 years (mean ± SEM: 44.5 ± 2) underwent an acute standardized psychosocial stress task combining public speaking and mental ...
Saxena Indu - - 2013
Background and Objectives: Low blood glucose levels have been associated with a hostile behaviour. The individuals who show aggressiveness and hostility are more likely to develop hypertension and cardiac diseases. The future hypertension has been linked with a high cardiovascular reactivity to stress. We have investigated the association of the ...
Lin Shin S Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA 94305, - - 2013
Patients with a myocardial bridge (MB) and no significant obstructive coronary artery disease (CAD) may experience angina presumably from ischemia, but noninvasive assessment has been limited and the underlying mechanism poorly understood. This study seeks to correlate a novel exercise echocardiography (EE) finding for MBs with invasive structural and hemodynamic ...
Saaby Marie-Louise - - 2013
AIM: to assess the urethral closure function by urethral pressure reflectometry (UPR) during intra-abdominal pressure-increase in SUI and continent women. METHODS: Twenty-five urodynamically proven SUI women and eight continent volunteer women were assessed by ICIQ-SF, pad-weighing test, incontinence diary, and UPR. UPR was conducted during resting and increased intra-abdominal pressure ...
Nyklíček Ivan - - 2013
Objective: The aim was to examine the effects of a Mindfulness-Based Stress Reduction (MBSR) intervention on cardiovascular and cortisol activity during acute stress. Method: Eighty-eight healthy community-dwelling individuals reporting elevated stress levels were randomly assigned to the MBSR protocol or a waitlist control group. Before and after the intervention period ...
Klarskov Niels - - 2013
Abstract Objective. Urethral pressure reflectometry (UPR) has shown to be superior in evaluating the squeeze function compared to urethral pressure profilometry. The conventional UPR measurement (step method) required up to 15 squeezes to provide one measure of the squeezing opening pressure and one measure of the squeezing elastance. The UPR ...
Kotlyar Michael M Department of Experimental and Clinical Pharmacology, University of Minnesota, Minneapolis, MN, USA. - - 2013
Smokers often smoke during stressful events, which leads to large increases in cardiovascular measures such as blood pressure (BP) and heart rate (HR). Because exaggerated cardiovascular response to stress is associated with cardiovascular disease risk, this study examined paroxetine's effect on the physiological response to combining stress and smoking. Sixty-two ...
Santos Celio X C - - 2013
Significance: Reactive oxygen species (ROS) are produced during normal ER metabolism. There is accumulating evidence showing that under stress conditions such as Endoplasmic Reticulum stress (ER stress), ROS production is increased via enzymes of the NADPH oxidase (Nox)family, especially via the Nox2 and Nox4 isoforms, which are involved in the ...
Lin Yan-Cheng - - 2013
The application of static high pressure provides a method for precisely controlling and investigating many fundamental and unique properties of semiconductor nanocrystals (NCs). This study systematically investigates the high-pressure photoluminescence (PL) and time-resolved carrier dynamics of thiol-capped CdTe NCs of different sizes, at different concentrations, and in various stress environments. ...
Darling Emily S - - 2013
Climate change is reshaping biological communities against a background of existing human pressures. Evaluating the impacts of multiple stressors on community dynamics can be particularly challenging in species-rich ecosystems, such as coral reefs. Here, we investigate whether life-history strategies and co-tolerance to different stressors can predict community responses to fishing ...
Lachenbruch Charlie - - 2013
Tissue ischemia is thought to play a major role in the development of pressure ulcers. Pressure, shear, and temperature are acknowledged contributors, but the relative magnitude of each factor is largely unknown. A cross-sectional pilot study was conducted on the sacrums of four healthy volunteers to estimate the relative contributions ...
Taylor Chloe E - - 2013
AIM: The ability to maintain arterial blood pressure when faced with a postural challenge has implications for the occurrence of syncope and falls. It has been suggested that posture-induced declines in the mechanical component of the baroreflex response drive reductions in cardiovagal baroreflex sensitivity associated with postural stress. However, these ...
Kumar Golden - - 2013
The quantitative model proposed here for nanoimprinting by thermoplastic compression molding is focused on bulk metallic glasses (BMGs), but it is also applicable to polymers and other thermoplastic materials. In our model the flow and pressure fields are evaluated using the lubrication theory, and the effect of molding pressure, BMG ...
Jacobs Stephanie J - - 2013
Humans are at risk from exposure to extremes in their environment, yet there is no consistent way to fully quantify and understand the risk when considering more than just meteorological variables. An outdoor 'bio-comfort' threshold is defined for Melbourne, Australia using a combination of heat stress, air particulate concentration and ...
Hering Dagmara - - 2013
OBJECTIVE:: Acute slow breathing (SLOWB) affects sympathetic cardiovascular regulation, but its long-term effects are unknown. Using device-guided breathing we explored short-term and long-term SLOWB effects on blood pressure (BP), heart rate (HR) and muscle sympathetic nerve activity (MSNA) in essential hypertension. METHODS:: We measured BP, HR and MSNA in 10 ...
Kunrath Julie - - 2013
Essential hypertension is associated with chronic exposure to high levels of inorganic arsenic in drinking water. However, early signs of risk for developing hypertension remain unclear in people exposed to chronic low-to-moderate inorganic arsenic. We evaluated cardiovascular stress reactivity and recovery in healthy, normotensive, middle-aged men living in an arsenic-endemic ...
Vargas-Ortiz Manuel A - - 2013
The Mexican fruit fly (Anastrepha ludens) is responsible for losses of up to 25% of crops such as mango and citrus fruits in Central America and México. The larval life cycle of A. ludens comprises three stages with a duration ranging from 3 to 8 days. Because of the damage ...
Seol Geun Hee - - 2013
Abstract Objectives: The aim of this study was to investigate the effect of inhalation of Salvia sclarea (clary sage; clary) or Lavandula angustifolia (lavender) essential oil vapors on autonomic nervous system activity in female patients with urinary incontinence undergoing urodynamic assessment. Study design, location, and subjects: This study was a ...
Hering Dagmara - - 2013
Objective. High-normal blood pressure (BP) increases the risk of cardiovascular (CV) disease. The mechanisms underlying this increased risk are not clear. Sympathetic activation appears to be a potential mechanism linking high-normal BP to CV disease. This study examined whether high-normal BP compared with optimal BP is linked to sympathoexcitation at ...
Ogoh Shigehiko - - 2013
The respiratory chemoreflex is known to be modified during orthostatic stress though the underlying mechanisms remain to be established. To detremine the potential role of cerebral hypoperfusion, we examined the relationship between changes in middle cerebral artery mean blood velocity (MCA Vmean) and pulmonary ventilation (VE) from supine control to ...
Redina Olga E - - 2013
The genetic basis of the stress-sensitive arterial hypertension was investigated using the quantitative trait loci (QTL) approach. Two groups of F(2) (inherited stress-induced arterial hypertension [ISIAH] × Wistar albino Glaxo [WAG]) hybrid males of different age (3-4 months old and 6 months old) were tested for blood pressure at rest ...
Ren Jie - - 2013
We describe experiments that probe the evolution of shear jammed states, occurring for packing fractions ϕ_{S}≤ϕ≤ϕ_{J}, for frictional granular disks, where above ϕ_{J} there are no stress-free static states. We use a novel shear apparatus that avoids the formation of inhomogeneities known as shear bands. This fixed ϕ system exhibits ...
Andrews Julie - - 2013
Upon perception of a stimulus as stressful, the human brain reacts with the activation of the hypothalamus-pituitary-adrenal (HPA) axis and the sympathetic nervous system (SNS), to mobilize energy resources to better cope with the stressor. Since the perception of the stressor is the initial stimulus, a synchronicity between the subjective ...
Dhuri Kalpana D - - 2013
Shirodhara is a classical and a well-established ayurvedic procedure of slowly and steadily dripping medicated oil or other liquids on the forehead. This procedure induces a relaxed state of awareness that results in a dynamic psycho-somatic balance. The objective of the study is to evaluate the psychological and physiological effects ...
de Queiroz Thyago M - - 2013
Hypertension is a multifactorial disorder, which has been associated with the reduction in baroreflex sensitivity (BRS) and autonomic dysfunction. Several studies have revealed that increased reactive oxygen species (ROS) generated by nicotinamide adenine dinucleotide phosphate [NAD(P)H] oxidase, following activation of type 1 receptor (AT1R) by Angiotensin-(Ang) II, the main peptide ...
Gabler Christopher A - - 2013
The rate of new exotic recruitment following removal of adult invaders (reinvasion pressure) influences restoration outcomes and costs but is highly variable and poorly understood. We hypothesize that broad variation in average reinvasion pressure of Triadica sebifera (Chinese tallow tree, a major invader) arises from differences among habitats in spatiotemporal ...
Rinne Petteri - - 2013
Melanocyte-stimulating hormones, α-, β- and γ-MSH, regulate important physiological functions including energy homeostasis, inflammation and sodium metabolism. Previous studies have shown that α-MSH increases sodium excretion and promotes vascular function in rodents, but it is unexplored whether these characteristics of α-MSH could translate into therapeutic benefits in the treatment of ...
Klima Lukasz - - 2013
The relationship between hypertension and oxidative stress remains unexplained. Nevertheless, it is well establishedthat reactive oxygen species have an influence on the arterial wall, endothelial function and therefore determine blood pressure. The evaluation of selected oxidative stress markers in hypertensive patients and an assessment of the relationship between oxidative stress ...
Aggarwal A K - - 2013
Safety analysis has been done for thick-walled circular cylinder under internal and external pressure using transition theory which is based on the concept of generalized principal Lebesgue strain measure. Results have been analyzed theoretically and discussed numerically. From the analysis, it can be concluded that circular cylinder made of functionally ...
Ryotokuji Kenji - - 2013
Background and aims: The current investigation was aimed at the development of a novel non-invasive treatment system, "pinpoint plantar long-wavelength infrared light irradiation (PP-LILI)", which may be able to relieve mental stress and reduce stress-related hormones. Materials (Subjects) and methods: We compared the subcutaneous temperature, blood pressure, the degree of ...
Yuan Junliang - - 2013
Long-term oil and gas exploitation in reservoir will lead to pore pressure depletion. The pore pressure depletion will result in changes of horizontal in-situ stresses both in reservoirs and caprock formations. Using the geophysics logging data, the magnitude and orientation changes of horizontal stresses in caprock and reservoir are studied. ...
Lee Lik Chuan LC Department of Surgery, UCSF/VA Medical Center, - - 2013
Injection of Algisyl-LVR, a treatment under clinical development, is intended to treat patients with dilated cardiomyopathy. This treatment was recently used for the first time in patients who had symptomatic heart failure. In all patients, cardiac function of the left ventricle (LV) improved significantly, as manifested by consistent reduction of ...
Guo Pinkun P School of Safety Engineering, China University of Mining & Technology, Xuzhou 221116, China ; National Engineering Research Center for Coal & Gas Control, China University of Mining & Technology, Xuzhou 221116, - - 2013
The coal permeability is an important parameter in mine methane control and coal bed methane (CBM) exploitation, which determines the practicability of methane extraction. Permeability prediction in deep coal seam plays a significant role in evaluating the practicability of CBM exploitation. The coal permeability depends on the coal fractures controlled ...
Birditt Kira S - - 2012
Objectives.Although higher quality marriages are associated with better health outcomes, less is known about the mechanisms accounting for this association. This study examines links among marital/partner quality, stress, and blood pressure and considers both main and moderating effects.Method.Participants from the National Social Life, Health, and Aging Project (N = 1,854; ...
Zhou Yuan-Yuan - - 2012
To investigate whether stress-induced visceral hypersensitivity could be alleviated by electroacupuncture (EA) and whether EA effect was mediated by endogenous opiates. Six to nine week-old male Sprague-Dawley rats were used in this study. Visceral hypersensitivity was induced by a 9-d heterotypic intermittent stress (HIS) protocol composed of 3 randomly stressors, ...
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