carcass yield is important economical parameters for producers and contributors of meat science. in the present study, carcass yield and also the weight losses resulted post mortem until consumption were investigated. the mean values of cold carcass and hot carcass weight were 15.63 and 15.33, the mean value of cooling loss was 1.87% and average value of hot and cold efficiency were 41.44% and ...

objectives: tooth loss appears to have an important role in the loss of mastication and esthetics. the aim of this systematic review was to investigate the prevalence of tooth loss and edentulism in the iranian population. methods: studies reviewed in this article were primarily identified via search of the online bibliographic databases including pubmed and iranian biomedical journals, by usin...

improvements in science and technology and the use of modern machinery in manufacture have led to increase in the number of workers exposed to hazardous agents including noise. this study evaluated the effects of occupational noise on hearing loss and blood pressure in welders after 4 years.in this cohort study, all of the welders working at one of neyshabur's water heater producing factories w...

Loss of hearing is a known problem in patients with chronic renal failure, occurring in 40-XO% of cases and being most often of the high frequency sensorineural type. We performed a study on 50 patients with this disease, including 20 who had undergone a successful kidney transplantation. Our results show an 80% incidence of hearing loss in these patients and a chance of improvement in at l...