نتایج جستجو برای: hf wave
تعداد نتایج: 238190 فیلتر نتایج به سال:
OBJECTIVE The aim of this study is to assess the association between genetic ancestry, self-declared race and haemodynamic parameters in patients with chronic heart failure (HF). METHODS Observational, cross-sectional study. Eligible participants were aged between 18 and 80 years; ejection fraction was ≤50%. Patients underwent genetic analysis of ancestry informative markers, echocardiography...
High frequency nonionizing electromagnetic fields (HF-EMF) that are increasingly present in the environment constitute a genuine environmental stimulus able to evoke specific responses in plants that share many similarities with those observed after a stressful treatment. Plants constitute an outstanding model to study such interactions since their architecture (high surface area to volume rati...
This paper describes the design of sinuous antenna reflector feeds using blended rational interpolation. The blended rational interpolation method is developed to interpolate a sparse set of high-fidelity (HF) data while following the trends of a denser set of low-fidelity (LF) data. The HF data are obtained by full-wave computational electromagnetics simulations of the input impedance of a pyr...
We develop an efficient method for accurately calculating the electric field of tightly focused laser beams in the presence of specific configurations of microscopic scatterers. This Huygens-Fresnel wave-based electric field superposition (HF-WEFS) method computes the amplitude and phase of the scattered electric field in excellent agreement with finite difference time-domain (FDTD) solutions o...
BACKGROUND Arterial stiffness is used as an index of arteriosclerosis. The goal of this study was to clarify whether increased arterial stiffness, evaluated by measuring the brachial-ankle pulse wave velocity (baPWV), is a risk factor for the prognosis of heart failure (HF) patients. METHODS AND RESULTS After examination of the baPWV, as well as the levels of neurohumoral factors, the 72 enro...
سابقه و هدف: شواهدی در زمینه اثرات متقابل سطوح انسولین و دآسیل گرلین (dag) وجود دارد، اما ارتباط بین درصد اسیدهای چرب اشباع و غیر اشباع در روغن های خوراکی مختلف و در قالب رژیم غذایی پرچرب با ترشح هورمون های انسولین و dag بررسی نشده است. مطالعه حاضر به منظور بررسی و مقایسه تأثیر منابع مختلف چربی رژیمی و میزان اشباع اسیدهای چرب بر سطوح پلاسمایی انسولین و dag و تعیین ارتباط dag با عملکرد انسولین ا...
Since October 2004, a Frequency Modulated– Continuous Wave (FM–CW) ionosonde chain along the magnetic meridian has been operating in Southeast Asia, in Kototabang (0.2 S, 100.3 E), Indonesia, Chumphon (10.7 N, 99.4 E), Thailand, and Chiang Mai (18.8 N, 98.9 E), Thailand. Variations in the virtual height of the bottomside of the F-region (hF ) at 2.5 MHz were analyzed, in order to study the day-...
We present the observations of artificial ionospheric modification experiment EISCAT on 18 October 2012 in Tromsø, Norway. When pump alternating O mode and X is switched on, UHF radar observation shows some strong enhancements electron density, ion lines plasma lines. Based existing theories, we find following: First, during experiment, frequency line (fL), (fia) (fh) matches fL = fh − 3fia 5fi...
Molecular genetic markers, such as those from fecal Bacteroides microorganisms, can link microbial pollution with its source, and have been used successfully in studies of sheltered aquatic environments. Their applicability to wave-driven, open coast environments has not been tested. We assessed the contribution of a tidal outlet to surf zone water quality in coastal Orange County, California, ...
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