نتایج جستجو برای: روش pvd
تعداد نتایج: 371235 فیلتر نتایج به سال:
PVD and FLP sensory neurons envelope the body of the C. elegans adult with a highly branched network of thin sensory processes. Both PVD and FLP neurons are mechanosensors. PVD is known to mediate the response to high threshold mechanical stimuli. Thus PVD and FLP neurons are similar in both morphology and function to mammalian nociceptors. To better understand the function of these neurons we ...
Coexisted peripheral vascular disease (PVD: ankle/brachial pressure index A/PBI less than 0.75) or carotid artery disease (CTD: Brochenbrough's supraorbital Doppler flow analysis) were diagnosed by non-invasive testings, and correlated with clinical pictures and coronary backgrounds in 121 consecutive patients with confirmed coronary artery disease. PVD were found in 16.5%, CTD in 33.1% and bot...
Under iron-limiting conditions, Pseudomonas aeruginosa PAO1 secretes a fluorescent siderophore called pyoverdine (Pvd). After chelating iron, this ferric siderophore is transported back into the cells via the outer membrane receptor FpvA. The Pvd-dependent iron uptake pathway requires several essential genes involved in both the synthesis of Pvd and the uptake of ferric Pvd inside the cell. A p...
The prevalence of peripheral vascular disease (PVD) was determined in 296 Japanese diabetics (mean age 55.2 years, range 19 to 79 years), using a Doppler ultrasonic technique. PVD was diagnosed in 11.5% of the diabetic patients (7.6% females, 14.6% males). In 88% of all patients with PVD, asymptomatic impaired circulation was diagnosed. There was a clear increase of PVD with age. It was found t...
PURPOSE To determine prevalence and associations of incomplete posterior vitreous detachment (PVD). METHODS The population-based cross-sectional Beijing Eye Study 2011 included 3468 individuals with a mean age of 64.6±9.8 years (range: 50-93 years). A detailed ophthalmic examination was performed including spectral-domain optical coherence tomography (SD-OCT). Incomplete PVD was differentiate...
در این پژوهش پوشش نانوساختار DLC (کربن شبه الماسی) با استفاده از روش PACVD (رسوبگذاری شیمیایی از فاز بخار به کمک پلاسما) و روش Arc-PVD (رسوبگذاری فیزیکی از فاز بخار به کمک قوس کاتدی)، روی فولاد St37 پوشش داده شد. سپس در روش Arc-PVD یک لایه میانی قبل از پوشش DLC رسوبگذاری گردید. مشخصهیابی و ارزیابی پوششها بهوسیله روشهای میکروسکوپ الکترونی روبشی، پراش سنجی پرتو ایکس، طیف سنجی رامان، طیف س...
OBJECTIVE To determine the role of hyperglycemia in prospective analyses of peripheral vascular disease (PVD) in type 2 diabetes, taking into account other potential risk factors. RESEARCH DESIGN AND METHODS Potential risk factors for the development of PVD were examined in 3,834 of 5,102 individuals enrolled in the U.K. Prospective Diabetes Study (UKPDS) without PVD at diagnosis of diabetes,...
PURPOSE To show a case in which the shape of the fovea changed after an asymptomatic macular posterior vitreous detachment (PVD). METHODS The foveal shape was determined from the spectral-domain optical coherence tomography (OCT) images before and after a spontaneous macular PVD. RESULTS A 66-year-old man with a unilateral macular hole in the right eye presented with a perifoveal PVD in the...
The siderophore pyoverdine (PVD) is a primary virulence factor of the human pathogenic bacterium Pseudomonas aeruginosa, acting as both an iron carrier and a virulence-related signal molecule. By exploring a number of P. aeruginosa candidate systems for PVD secretion, we identified a tripartite ATP-binding cassette efflux transporter, here named PvdRT-OpmQ, which translocates PVD from the perip...
Pixel-value differencing (PVD) steganography generates step effects or abnormal high fluctuations in PVD histogram. Since steganalysis exploits these artifacts to defeat the PVD steganography, modified PVD (MPVD) steganography preserving the PVD histogram is recently presented. This paper proposes a novel steganalysis method, in which we embed message one more time into the suspicious image to ...
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