The purpose of this in vitro study was to measure the concentration of hydrogen ions (pH) of calcium hydroxide [(Ca(OH)2] pastes combined with different vehicles over 7 periods of time. The Ca(OH)2 was manipulated with the following vehicles: i: sterile water; ii: iodoform plus sterile water; iii: local anesthetics (Lydocaine 2% with 1: 100,000 epinephrine); iv: polyethyleneglycol; v: glycerin;...

Using 300 nm nanosphere monolayer mask on COOH terminated silane surface as mask, we fabricate a chemical pattern which has polyethyleneglycol (PEG) terminated surface patterned with carboxylic terminated holes. Lysozyme selectively absorbs on the COOH terminated holes forming a hexagonal packed lysozyme monolayer array. The patterned protein islands cover the whole 1x1 cm wafer and have a ring...

1. Previous studies have indicated that the permeability of polyethyleneglycol across the human intestine is anomalously high in comparison with the permeability of sugars with similar molecular mass. In consequence it has been proposed that two or more distinct mechanisms must exist for the translocation of these classes of molecule or, alternatively, that the molecular parameter determining r...

Studies of dynamic and equilibrium swelling, structural characterisation and solute transport in swollen poly(2-hydroxyethyl methacrylate) gels (pHEMA) cross-linked with tripropyleneglycol diacrylate (TPGDA) were done for a wide range of TPGDA concentrations. The influence of the pH on these pHEMA properties was evaluated. In swelling studies it was found that in changing the pH from 6.5 to 12....

Gold nanoparticles (GNPs) protected by poly(2-ethyl-2-oxazoline) (POZ) of different molecular weights (Mw = 5, 50, 200 and 500 kDa) were synthesised characterised dynamic light scattering, nanoparticle tracking analysis, zeta potential measurement transmission electron microscopy. It was established that the use POZ with 50 kDa resulted in formation GNPs low polydispersity while greater led to ...

Microalgae are a valuable source of enzymes and active ingredients due to their biochemical variability, health-beneficial properties, lower production cost viability on an industrial scale. In addition, the growing demand for sustainable products constitutes microalgae as viable resource development range innovative products. present work, proteolytic activity Arthrospira platensis lysate was ...

Large discrete supertetrahedral clusters of metal chalcogenides are rare due to the difficulty crystallizing solids in which negative charge cluster is balanced by positive charges countercations. Here, we describe a ligand-free T3 cluster, [Ga10S16(SH)4]6−, was successfully synthesized presence superbase 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) using neutral surfactant polyethyleneglycol (PEG)...

Sera from patients with giant cell arteritis and/or polymyalgia rheumatica have been found to contain increased levels of circulating immune complexes (IC). Results with the polyethyleneglycol precipitation complement consumption (PEG-CC) assay have been correlated with disease activity. 44% of samples from an active untreated group (21 patients) had increased levels of ICs compared with 23% fr...