Survey of Fluid and Nonfat Dry Milks for N-Nitrosamines

Absence of vitamin D in nonfat dry milk.

American Academy of Pediatrics has strongly e11(lOrsed the use of milk and infant formula lroducts as primary vehicles for vitamin D supplementation to ensure a total vitamin D intake of 400 I. U. per day by all infants and children.12 Although in the United States there are significant regioiial differences with respect to dairy practices in fortifying fluid milk, almost three-fourths of all w...

Formation and Metabolism of N-Nitrosamines

The formation of nitrosamines and reactions of the first and second phase of their biotransformations were reviewed.

A small survey of exposure to rubber process dust, rubber fume and N-nitrosamines

Degradation of N-nitrosamines by intestinal bacteria.

A major proportion of bacterial types, common in the gastrointestinal tract of many animals and man, were active in degrading diphenylnitrosamine and dimethylnitrosamine, the former being degraded more rapidly than the latter. At low nitrosamine concentrations (is less than 0.05 micronmol/ml), approximately 55% of added diphenylnitrosamine, 30% of N-nitrosopyrrolidine, and 4% of dimethylnitrosa...

the survey of the virtual higher education in iran and the ways of its development and improvement

این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.