In this article the heavy metal concentrations in atmospheric wet precipitation and its relationship with the particles (PM10) in the air of the city of Zanjan are reported. Two hundreds samples of rain water and snow were collected with 45 particle samples collected monthly. Heavy metals in wet and dry samples were determined by atomic absorption spectrophotometery. The use of enrichment facto...

Aflatoxins are secondary toxic metabolites produced by some Aspergillus spp. particularly, Aspergillus flavus and A. parasiticus that contaminate food and feed. The objective of this study was to evaluate the contamination of feedstuffs with Aspergillus spp. and detect genes involved in the aflatoxin biosynthesis pathway of A. flavus and A. parasiticus isolates. A total of 110 cow feed samples ...

background & aims of the study: because of yoghurt is a particular flavor (caused by diacetyl) and appropriate essential oils (from atanal) as well as enjoy the soft tissue, it is considered as one of the most palatable dairy products. with regards to the yoghurt portion in supplement of protein food needs in our society, it is necessary to ensure its health. in this research the hygienic quali...

BACKGROUND A national multimedia campaign was launched in January 2010, to increase the proportion of young people tested for chlamydia. This study aimed to evaluate the impact of the campaign on the coverage and positivity within the National Chlamydia Screening Programme (NSCP) in England. METHOD An interrupted time series of anonymised NCSP testing reports for England for a 27 month period...

background and aim: yogurt is one of the most consumed foods with different probiotic effects. the aim of this study was to evaluate antimicrobial effects of non-industrial yogurts on two common enteropathogens – salmonella and shigella. methods: in this experimental study, we evaluated the antimicrobial effects of 30 various non-industrial yogurt samples on 11 shigella sonnei, 7 shigella flexn...