A glycosidase which attacks corneal keratan sulfate was purified from extracts of Pseudomonas sp. IFO-13309. When corneal keratan sulfate was degraded by the purified enzyme, Sephadex G-50 chromatography indicated the presence of a number of oligosaccharides differing in size and sulfate content. The characterization of two major fractions of the oligosaccharides indicated that the point of enz...

The work reports on an experimental programme, conducted to validate comprehensively our previously proposed coupled chemo-transport model for external sulfate attack concrete. Specifically, the effects of concentration solution and temperature distribution ions in concrete are experimentally investigated used demonstrate accuracy modeling framework. Further, profile aluminate depletion leachin...

Under adequate sulfur supply, plants accumulate sulfate in the vacuoles and use sulfur-containing metabolites as storage compounds. Under sulfur-limiting conditions, these pools of stored sulfur-compounds are depleted in order to balance the nitrogen to sulfur ratio for protein synthesis. Stress conditions like sulfur limitation and/or pathogen attack induce changes in the sulfate pool and the ...

background: the role of temperature changes, as an environmental risk factor, in the human health status has been investigated in recent studies. accordingly, the present two-year study was conducted to evaluate the incidence of myocardial infarction (mi) in warm and cold seasons in ali-ibn abi talib hospital, rafsanjan, iran. materials and methods: in this descriptive and cross-sectional study...

Within minutes of Bdellovibrio bacteriovorus attack on prey cells, such as Escherichia coli, the cytoplasmic membrane of the prey is altered. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of purified invaded prey cell (bdelloplast) membranes revealed the appearance of a noncytoplasmic membrane protein. This protein is not observed in preparations of noninvaded E. coli membranes and ...

background: blood neutrophil to lymphocyte ratio (nlr) and mean platelet volume (mpv) both have been used as a simple marker of inflammation in many disorders. here, we aimed to investigate the relationship between nlr, mpv, and familial mediterranean fever (fmf). materials and methods: in this retrospective study, the fi les of fmf patients in pediatric rheumatology outpatient clinic were revi...

The corrosion of offshore reinforced concrete structures under combined chloride and sulfate ions attack is a complex phenomenon. purpose this study to develop numerical models in conjunction with experimental studies for long-term durability assessment structures. A model was developed describe the simultaneously transport considering competitive binding by hardened cement pastes effect. valid...

alkali and alkaline earth metals hydrogen sulfate catalyzed the one-pot three component condensation reactions of aldehydes, 1,3-dicarbonyl compounds and urea or thiourea under solvent-free conditions leading to 3,4-dihydropyrimidin-2(1h)-ones in high yields at 80 °c. our results showed that biginelli reaction not only is ph dependent, but the cation of catalyst plays an important role.