Search results for "Sulphate"
showing 6 items of 56 documents
Pregnenolone sulphate (PREGS) affects spatial learning and memory in two different cognitive tasks in adult rats. Influence of the emotional state.
2009
Pregnenolone sulphate (PREGS) is one of the most potent memory-enhancing neurosteroids in rodent learning studies, also involved in the modulation of the emotional state (Valleè et al 2001). Neurosteroids exert an important role as modulators of the neuronal activity by interacting with different receptors or ion channels (Urani et al 1998). Indeed PREGS acts as negative modulator of GABAA- and as positive modulator of NMDA -receptors. Altered levels of PREGS have also been reported during aging and in human neurodegenerative pathologies like Alzheimer’s disease. The aim of this study was to investigate, in adult male rats, the effects of a single injection of PREGS (10 mg/kg s.c.) on: i) o…
Microbial role in dolomitic crust formation associated to Messinian gypsum, Monte Conca cave, Sicily.
2009
Microbial dolomite associated to gypsum stromatolites from a Messinian marginal section, Madonie mountains, Sicily.
2009
Sulphate removal over barium-modified blast-furnace-slag geopolymer
2016
Blast-furnace slag and metakaolin were geopolymerised, modified with barium or treated with a combination of these methods in order to obtain an efficient SO4(2-) sorbent for mine water treatment. Of prepared materials, barium-modified blast-furnace slag geopolymer (Ba-BFS-GP) exhibited the highest SO4(2-) maximum sorption capacity (up to 119mgg(-1)) and it compared also favourably to materials reported in the literature. Therefore, Ba-BFS-GP was selected for further studies and the factors affecting to the sorption efficiency were assessed. Several isotherms were applied to describe the experimental results of Ba-BFS-GP and the Sips model showed the best fit. Kinetic studies showed that th…
Sulphate removal over barium-modified blast-furnace-slag geopolymer
2016
Blast-furnace slag and metakaolin were geopolymerised, modified with barium or treated with a combination of these methods in order to obtain an efficient SO42− sorbent for mine water treatment. Of prepared materials, barium-modified blast-furnace slag geopolymer (Ba-BFS-GP) exhibited the highest SO42− maximum sorption capacity (up to 119 mg g−1) and it compared also favourably to materials reported in the literature. Therefore, Ba-BFS-GP was selected for further studies and the factors affecting to the sorption efficiency were assessed. Several isotherms were applied to describe the experimental results of Ba-BFS-GP and the Sips model showed the best fit. Kinetic studies showed that the so…
Qualitative mucin disorders in patients with primary Sjögren's syndrome:a literature review
2020
Background It is a common opinion that Primary Sjögren Syndrome (pSS) damages the exocrine glands and determines the reduction of secreted saliva, some studies show that there are qualitative anomalies of the mucins produced in saliva, including MUC7, MUC5B, MUC1. The purpose of this study is to trace all the information useful to establish whether there is a qualitative or quantitative defect of the mucins in the pSS. Material and Methods We reviewed the literature by looking for publications relevant to the topic in electronic databases. Sixteen articles met the search criteria. The studies were divided into two categories, those that studied the rheological characteristics of the saliva …