نتایج جستجو برای: barrier

تعداد نتایج: 89945  

2011
Yue Yang Min Dai Teresa M. Wilson Irina Omelchenko John E. Klimek Phillip A. Wilmarth Larry L. David Alfred L. Nuttall Peter G. Gillespie Xiaorui Shi

BACKGROUND The endothelial-blood/tissue barrier is critical for maintaining tissue homeostasis. The ear harbors a unique endothelial-blood/tissue barrier which we term "blood-labyrinth-barrier". This barrier is critical for maintaining inner ear homeostasis. Disruption of the blood-labyrinth-barrier is closely associated with a number of hearing disorders. Many proteins of the blood-brain-barri...

Kamran Barghandan Mohammad Nabi Shahiki Tash Saber Molaei

This paper aims to evaluate the impact of several indices of market structure including entry to barrier, economies of scale and concentration degree on 140 active industries using the digit. Accordingly, we apply three methods including cost disadvantages ratio ( ), Herfindahl–Hirschman concentration index ( ) and Comanor and Willson criterion in order to assess the economies of scale and usin...

In this work, magnetic Ni nanowire arrays were ac-pulse electrodeposited into the anodic aluminum oxide (AAO) template fabricated by the common two-step anodization technique. The barrier layers at the  bottom of the pores were exponentially thinned in a non-equilibrium anodization process to 8, 12, 16 and 20 V. These were fabricated using the constant of 15 mA deposition current, 48 mS off-tim...

الماسی‌کاشی, محمد, ترکاشوند, غفار, رمضانی, عبدالعلی, زارعی, مجید,

Humidity sensors are fabricated based on nanoporous alumina, using hard anodization technique. In order to investigate the effect of the anion incorporated in the alumina template during anodization, two different kinds of sensors, wall and barrier layer sensor, with various current densities at 38 V and 44 V anodization voltages are fabricated. The effect of frequency measurement, ranging from...

حیدری, بهروز, یعقوبی, غلامحسین,

A 44 year old woman presented with decreased vision and floaters, started since 4 days before, in her right eye referred to our ophthalmology clinic. On examination, it was found that the best corrected visual acuity was limited to R-E: 20/80 and that of the left eye: 20/20. Fundus examination of the right eye revealed a rhegmatogenous subclinical retinal detachment and vitreous hemorrhage 15 m...

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