نتایج جستجو برای: roughened bed

تعداد نتایج: 49912  

Journal: :Indian pediatrics 2011
Umesh Kapil H P S Sachdev

Conjunctival xerosis (X1A) as an independent indicator of VAD: VAD is only one of the several causes of conjunctival xerosis; thus the reliability of this sign (X1A) for independent assessment of VAD in field conditions is questionable [3,4]. Conjunctival xerosis is clinically expressed as marked dryness or unwettability; the affected area appears roughened, with fine droplets or bubbles on the...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
J B Jackson N J Halas

Au and Ag nanoshells are investigated as substrates for surface-enhanced Raman scattering (SERS). We find that SERS enhancements on nanoshell films are dramatically different from those observed on colloidal aggregates, specifically that the Raman enhancement follows the plasmon resonance of the individual nanoparticles. Comparative finite difference time domain calculations of fields at the su...

2006

Marine organisms have evolved defence mechanisms to prevent epibiosis. This study investigated the anti-settlement properties of natural periostracal microtopographies of two mytilid species, Mytilus edulis (from North, Baltic and White Seas) and Perna perna (from the SW Atlantic). Resin replicas of shells were exposed to cyprids of the barnacle Semibalanus balanoides. Replicas with intact isot...

2014
BLANK PAGES Edward M. Williams Walter R. Warren

The study of vail roughness effects on model heat transfer in high Reynolds number shock tunnel flows of a few milliseconds duration requires the use of a rugged, fast-response calorimeter of known surface roughness. Models constructed of continuous thin copper sheeting over a solid Insulator substrate with rear thermocouples attached were developed for this purpose. TSut surface of the copper ...

Abbas Ali Khodadadi Ahmad Tavasoli, Kambiz Sadaghiani Yadollah Mortazavi

In a novel dual bed reactor Fischer-Tropsch synthesis was studied by using two diffrent cobalt catalysts. An alkali-promoted cobalt catalyst was used in the first bed of a fixed-bed reactor followed by a Rutenuim promoted cobalt catalyst in the second bed. The activity, product selectivity and accelerated deactivation of the system were assessed and compared with a conventional single bed r...

Journal: :International Conference on Aerospace Sciences and Aviation Technology 2001

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