An experimental and numerical study has been carried out to investigate the heat transfer by natural convection radiation in a two dimensional annulus enclosure filled with porous media (glass beads) between horizontal concentric cylinders. The outer cylinders are of (100, 82 and70mm) outside diameters inner cylinder 27 mm diameter (or without) annular fins attached it. Under steady state condi...

RATIONALE Rapidly performing global proteomic screens is an important goal in the post-genomic era. Correlated matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) and fluorescent imaging of photocleavable peptide-coded random bead-arrays was evaluated as a critical step in a new method for proteomic screening that combines many of the advantages of MS with fluorescence-base...

Adhesion of Cryptosporidium parvum and Giardia lamblia to four materials of different surface charge and hydrophobicity was investigated. Glass beads were used with and without three polymer coatings: aminosilines (A0750), fluorosilines (T2494), an amino cationic polymer. Surface charge density and hydrophobicity of the beads were characterized by measuring the zeta potential (ZP) and the conta...

Microencapsulation has become a common technique in the production of controlled release dosage forms. Many results have been reported, concerning the use of alginate beads as controlled release drug formulations. Alginate has a unique gel-forming property in the presence of multivalent cations, in an aqueous medium. Ibuprofen is an excellent analgesic and antipyretic, non-steroidal anti-inflam...

In the past few years, deeply colored black-appearing glass has garnered a growing interest in context of research on Iron Age technology and trade. The numerous ‘black’ beads found Early contexts Southern Portugal have not however been considered this discussion, they remain largely unsystematized. contribution, typological survey these objects is presented which highlights their unusual conce...

A generic method is described for forming surface-bound structures that incorporate protein receptors in a membrane-like environment. Silane reagents (octadecyltrichlorosilane and dimethyloctadecylchlorosilane) were used to produce primed substrates bearing full and partial monolayers, respectively. Biomembranes were formed by dialysis of detergent-solubilized membranes in the presence of two d...