نتایج جستجو برای: film covers protective structures

تعداد نتایج: 683478  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

To enhance photocatalytic degradation of organic pollutants, coral-like TiO2 nanostructured thin films were chemically synthesized through the sol-gel method. The fabricated thin films were characterized by Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), nitrogen sorption isotherms, mercury porosimetry measurements, and UV-Vis Diffuse Reflectance Spectrum (DRS). The ...

2007
Jonathan Phillips Joe Cordaro

The potential applications of new graphitic materials, including carbon nanotubes and carbonized spheres, is limited by both the cost of production and the difficulties of organizing them into final geometries. We have developed a simple, low temperature (ca. 500 C) novel technology based on our discovery that in certain lean burn combustion environments graphite will grow rapidly (>1 graphene ...

2008
Alessandro Papa Sergio Pellegrino

This paper presents a study of a square membrane, creased according to theMiura-ori folding pattern.When the membrane is allowed to expand from its packaged configuration, it initially expands elastically under zero corner forces. Starting from this naturally expanded configuration, the paper investigates the stress distribution and the load-displacement relationship when in-plane, diagonal loa...

Journal: :J. Comb. Theory, Ser. B 2000
Jaroslav Nesetril Claude Tardif

We provide a correspondence between the subjects of duality and density in classes of finite relational structures. The purpose of duality is to characterise the structures C that do not admit a homomorphism into a given target B by the existence of a homomorphism from a structure A into C. Density is the order-theoretic property of containing no covers (or ‘gaps’). We show that the covers in t...

Journal: :Journal of the Japan Society of Colour Material 1979

Journal: :The Pure and Applied Mathematics 2013

Journal: :Journal of applied physiology 1997
R R Gonzalez T M McLellan W R Withey S K Chang K B Pandolf

Core temperature (Tc) output comparisons were analyzed from thermal models applicable to persons wearing protective clothing. The two models evaluated were the United States (US) Army Research Institute of Environmental Medicine (USARIEM) heat strain experimental model and the United Kingdom (UK) Loughborough (LUT25) model. Data were derived from collaborative heat-acclimation studies conducted...

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