نتایج جستجو برای: barrier properties

تعداد نتایج: 950623  

2015
Dan Cui Mitsuru Arima Keiyo Takubo Tokuhiro Kimura Keisuke Horiuchi Takuya Minagawa Satoshi Matsuda Eiji Ikeda

Neural vascular barrier is essential for the life of multicellular organisms, and its impairment by tissue hypoxia is known to be a central of pathophysiology accelerating the progression of various intractable neural diseases. Therefore, the molecules involved in hypoxia-induced impairment of vascular barrier can be the targets to establish new therapies for intractable diseases. Here, we demo...

Journal: :health in emergencies and disasters quarterly 0
mohammadkarim bahadori health management research centre, baqiyatallah university of medical sciences, tehran, iran. hamid reza khankeh department of health in disasters and emergencies, university of social welfare & rehabilitation sciences, tehran, iran. rouhollah zaboli health management research centre, baqiyatallah university of medical sciences, tehran, iran. mohammad raiszadeh department of surgery, school of medicine, baqiyatallah university of medical sciences, tehran, iran. isa malmir health management research centre, baqiyatallah university of medical sciences, tehran, iran.

background: coordination is a critical factor in successful organization and appropriate response to disasters. in this regard, a centralized coordination mechanism is the first step towards an effective, efficient, and sustainable response in order to be ensured of the short- and long-term recovery. thus, this study aimed to identify and prioritize the barriers and facilitators of coordination...

Journal: :journal of nanostructures 2013
m. mirzataheri

higher solid contents (20 % and 40 %) nanocomposites of poly (styrene-co-butyl acrylate) including higher content of cloisite 30b (7 wt% and 10 wt %) were prepared via miniemulsion polymerization. stability of the final latexes proved outstanding combination of polymerization procedure and surfactants. morphological studies revealed by tem, sax and xrd showed three structures of core-shell, arm...

Journal: :international journal of nano dimension 0
rh. saikia department of electronics & communication technology, gauhati university, guwahati-781014, india. p.k. kalita department of physics, guwahati college, guwahati-781021, india. p. datta department of electronics & communication technology, gauhati university, guwahati-781014, india. k. k. chattopadhyay department of physics, jadavpur university, jadavpur-700032, india.

cdse nanostructures were synthesized by using green chemical route as starch was used as capping agent. xrd, hr-tem, sead, uv and pl studies were made for structural and optical properties of the prepared sample. film morphology and the thickness measurement of n-cdse were carried out with afm analysis. i-v characteristics curve of this junction confirmed the formation of schottky contact betwe...

2008
Priya Batheja Yifan Song Bozena Michniak Joachim Kohn

Estimation of permeation of compounds such as chemical warfare agents (CWAs) alone or through barrier creams such as SERPACWA (Skin Exposure Reduction Paste Against Chemical Warfare Agents) requires animal experiments or in vitro testing using animal or human skin. While animal skin does not reflect the same barrier properties as human skin, human skin poses problems of procurement, cost and la...

2009
V. A. Kozlov

This paper presents the results of computer simulation of the under barrier tunnelling transport through the nonuniform heterostructure barriers containing spherical or cylindrical nano objects. Embedding of nano objects in the barrier enables one to construct the semiconductor barriers with predefined properties. Application of external potential to these objects exponentially changes the curr...

K. K. Chattopadhyay P. Datta P.K. Kalita Rh. Saikia,

CdSe nanostructures were synthesized by using green chemical route as starch was used as capping agent. XRD, HR-TEM, SEAD, UV and PL studies were made for structural and optical properties of the prepared sample. Film morphology and the thickness measurement of n-CdSe were carried out with AFM analysis. I-V characteristics curve of this junction confirmed the formation of Schottky contact betwe...

In this paper, polymer-based nanocomposites powder were applied on the surface of plain carbon steel by electrostatic device and then were cured by microwave. The effect of adding nanoparticles on the corrosion resistance properties of the coatings was investigated by Electrochemical Impedance Spectroscopy and immersion test in 3.5 NaCl solution. Coatings structure and morphology of nanoparticl...

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