Based on the premise that dietary nitrate is detrimental to human health, increasingly stringent regulations are being instituted to lower nitrate levels in food and water. Not only does this pose a financial challenge to water boards and a threat to vegetable production in Northern Europe, but also may be eliminating an important non-immune mechanism for host defence. Until recently nitrate wa...

BACKGROUND The main objective of this study was characterization of selected heavy metals concentrations (Lead, cadmium, copper, zinc, nickel and chromium) in groundwater used for ir-rigation in Tabriz City's countryside. METHODS After consulting with the experts of agriculture department and site survey, 38 irriga-tion water samples were taken from different farms (34 wells) without primary ...

In order to optimize conditions for the extraction of polyphenols from apples, peel and flesh of apples were subjected to an extraction process with different solvents consisting of various ratios of methanol and water (40, 60, 80 %), 100 % methanol, or with methanol acidified with hydrochloric acid (0.1 %). Extractions were performed using an ultrasonic bath with time periods from 5 to 15 min....

background: due to the increasing pollution of water resources, this study was carried out for evaluation of water quality pollution indices for monitoring of heavy metals (as, zn, pb and cu) contamination in ghahavand plain, hamadan province, western iran during spring and summer 2012. methods: totally, 20 ground water wells were chosen randomly. the samples were filtered (0.45 μm) and maintai...

Since a gonadotropin-inhibiting substance in human urine is precipitated by acidification of urine, comparisons of the gonadotropic activities and the inhibitory effects in urine after acidification and removal of precipitate and in untreated urine were carried out in bioassays. Gonadotropic activity in the supernatant of acidified urine, in which a gonadotropin-inhibitor was removed through pr...

Stendera, S. 2005. Spatiotemporal Variability of Chemistry and Biota in Boreal Surface Waters. A Multiscale Analysis of Patterns and Processes. Doctoral Dissertation. ISSN 1652-6880, ISBN 91-576-6994-5. This thesis focuses on the assessment of spatial and temporal patterns of freshwater communities in relation to spatial variability and changes of the abiotic environment (i.e. water chemistry)....

Paracetamol or sodium salicylate given intragastrically 30 minutes before the administration of absolute ethanol or acidified aspirin dose-dependently reduced the formation of mucosal lesions. The generation of gastric mucosal prostaglandin-like activity increased with ethanol and was completely suppressed by acidified aspirin. Paracetamol or sodium salicylate given alone increased the generati...