نتایج جستجو برای: pulse events
تعداد نتایج: 408654 فیلتر نتایج به سال:
Whether low diastolic blood pressure (DBP) is a risk factor for recurrent cardiovascular disease (CVD) events in persons with isolated systolic hypertension is controversial. We studied 791 individuals (mean age 75 years, 47% female, mean follow-up time: 8±6 years) with DBP <70 (n=225) versus 70 to 89 mm Hg (n=566) after initial CVD events in the original and offspring cohorts of the Framingham...
[Purpose] High resting blood pressure and heart rate are associated with the risk of cardiovascular events. In patients with decreasing amounts of slow twitch muscle fiber, hypertension may develop and resting heart rate may increase. Measurement of the amount of slow twitch muscle fiber and capillary density using muscle biopsy is inconvenient and expensive. Therefore, a better screening test ...
The linear pulse-shaping amplifier can also be used in simple pulse-counting applications, as depicted in Fig. 1(b). Amplifier output pulse widths range from 3 to 70 μs, depending on the selected shaping time constant. This width sets the dead time for counting events when utilizing an SCA, counter, and timer. To maintain dead time losses <10%, the counting rate is typically limited to <33,000 ...
BACKGROUND Atherosclerosis begins in the arterial wall, with endothelial dysfunction accompanied by functional and structural changes that influence arterial stiffness. Pulse contour analysis provides an assessment of compliance or elasticity of the large conduit arteries (C(1)) and small microcirculatory arteries (C(2)). In this study, the predictive value of reduced elasticity of these arteri...
روش های متعددی برای جداسازی این نوع امولسیون ها وجود دارد، تکنیک انعقاد الکتریکی یکی از روش ها برای حذف روغن از امولسیون است. از این تکنولوژی برای تصفیه پساب های روغنی صنایع پتروشیمی و پالایشگاهی و جداسازی آب و نمک موجود در نفت خام استفاده شده است. هدف از انجام این آزمایشات جداسازی بنزن از امولسیون بنزن در آب با استفاده از میدان الکتریکی غیر یکنواخت بوده است. بدین منظور از یک ظرف جداساز 3 جداره...
OBJECTIVES The aim of the longitudinal PARTAGE study was to determine the predictive value of blood pressure (BP) and pulse pressure amplification, a marker of arterial function, for overall mortality (primary endpoint) and major cardiovascular (CV) events, in subjects older than 80 years of age living in a nursing home. BACKGROUND Assessment of pulse indexes may be important in the evaluatio...
BACKGROUND AND OBJECTIVES With regard to monitoring blood pressure in hemodialysis patients, it is important to define clearly the time point at which the blood pressure is measured, because the blood pressure of hemodialysis patients varies with each hemodialysis session as a result of loss of excess fluid. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Using weekly averaged blood pressure, 9...
We study the dynamics of a parametrically and externally driven Rayleigh-Liénard hybrid model report emergence extreme bursting events due to novel pulse-shaped explosion mechanism. The system exhibits complex periodic chaotic patterns amid small oscillations as function excitation frequencies. In particular, advent rare recurrent bursts that emerged for certain parameter regions is characteriz...
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