نتایج جستجو برای: روش pvd
تعداد نتایج: 371235 فیلتر نتایج به سال:
Peripheral vascular disease (PVD) is an atherosclerotic disease affecting the lower extremities, resulting in skeletal muscle ischemia, intermittent claudication, and, in more severe stages of disease, limb amputation and death. The evaluation of therapy in this patient population can be challenging, as the standard clinical indices are insensitive to assessment of regional alterations in skele...
Sensory neurons adopt distinct morphologies and functional modalities to mediate responses to specific stimuli. Transcription factors and their downstream effectors orchestrate this outcome but are incompletely defined. Here, we show that different classes of mechanosensory neurons in C. elegans are distinguished by the combined action of the transcription factors MEC-3, AHR-1, and ZAG-1. Low l...
purpose: to describe the association between optic disc traction and non-arteritic anterior ischemic optic neuropathy (naion). methods: eighty three eyes of 83 patients with naion were evaluated by optical coherence tomography (oct) for detecting vitreous adhesion to the optic nerve head with separation from adjacent retina (partial posterior vitreous detachment). those who were negative for su...
The vitreous is involved in multiple diseases when an incomplete posterior vitreous detachment (PVD) occurs. An incomplete PVD can lead to several pathological conditions. Such visually threatening conditions are traditionally of exclusive surgical interest. In contrast, pharmacological vitreolysis is the effort to reduce or eliminate the pathogenetic role of the vitreous solely by means of dru...
The 316 L Stainless Steel is widely used as structural material in marine applications and subject to localized pitting corrosion chlorinated environments. main aim of the present work development coatings that are alternately deposited by a combination Physical Vapor Deposition (PVD) Atomic Layer (ALD) techniques. Three different architectures PVD/ALD, ALD/PVD PVD/ALD/PVD were studied. layer A...
لایههای نازک ZnS بر روی زیرلایههای شیشهای در دماهای مختلف زیرلایه به دو روش تبخیر در خلأ (PVD) و اسپری پایرولیزیز لایهنشانی شدند و در دمای °C 500 درهوا بازپخت گردیدند. تغییر در خواص اپتیکی و ساختاری لایهها توسط طیف پراش اشعة ایکس و طیفسنجی UV/VIS بررسی شد و همچنین بهکمک دادههای طیف عبوری، گاف انرژی محاسبه گردید. نتایج آزمایشها حاکی از آن است که همة لایهها دارای ساختار مکعبی هستند. تبل...
Robust dendrite morphogenesis is a critical step in the development of reproducible neural circuits. However, little is known about the extracellular cues that pattern complex dendrite morphologies. In the model nematode Caenorhabditis elegans, the sensory neuron PVD establishes stereotypical, highly branched dendrite morphology. Here, we report the identification of a tripartite ligand-recepto...
In a color image every pixel value composed of red, green and blue component and each of which ranges from 0 to 255 in case of 8-bit representation. In this paper, we have used pixel value differencing (PVD) method for secret data embedding in each of the component of a pixel in a color image. But when we use pixel-value differencing (PVD) method as image steganographic scheme, the pixel values...
CONTEXT Acute onset of monocular floaters and/or flashes represents a common presentation to primary care physicians, and the most likely diagnosis is posterior vitreous detachment (PVD). A significant proportion of patients with acute PVD develop an associated retinal tear that can lead to retinal detachment and permanent vision loss if left untreated. OBJECTIVE To quantify the association b...
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