rate of airborne fungal contamination in Yazd textile factories in 2007

Fungi are among the most important biological agents in air pollution. Textile factories are known as high risk places for contamination with fungal spores and metabolites. Since Yazd is one of the most important textile industry centers, this study was conducted to determine the concentration and types of airborne fungi in Yazd textile factories. A total of 235 indoor air samples from 30 randomly selected Yazd textile factories in 2007 were collected using air sampler pumps with appropriate filters. The concentration and types of isolated fungi were determined according to NIOSH standard technique for isolation of biologic agents. Data were analyzed based on the survey objectives, using statistical tests. Overall, 958 colonies from 16 different genera of fungi were isolated and among them Penicillium, Aspergillus and Cladosporium were known as the most prevalent isolated fungi. The fungal contamination rates were higher in the small factories than bigger factories and also in few factories, which usually used natural based fiber compared to those used synthetic fiber [P=0.0001]. The finishing areas had more contamination than the other parts and working areas with the topical air conditioner had lower contamination [P= 0.034]. There was a direct relationship between the amount of moisture and air fungal contamination [P=0.046], but there was no significant correlation between the whole fungal contamination rates and temperature. The results showed a high rate of contamination to fungal viable cultivable spores in Yazd textile factories. The presence of opportunistic fungi in these places, especially in summer is hazardous for immunosuppresed workers or those with malignancies or diabetes

Correlation between chronological, skeletal and dental age on panoramic radiography in patients referred to Yazd dental clinics on 2004-05

One of the important factors in orthodontic treatment planning is prediction of growth potential which is applied by stages of skeletal age and or another criteria such as the chronological age, sexual maturity, dental development stages, and height and weight. Another importance in determining the patient's age is in legal medicine to determine the guiltiness' age, more or less than 18 years. The aim of this study is to assess the correlation between skeletal, dental and chronological age. This diagnostic study was performed as a cross sectional method in dental faculty of Yazd Shaheed Sadoughi University from 2004 to 2005. 58 Patients of 15-25 years old who referred to private dental office were selected. The samples were chosen with continues method until it reached to the desired total numbers. Each patient completed 4 questionnaires consisting of chronological age, determined age from panoramic radiography, measured age from surgical teeth and determined age according to h and wrist radiography. Panoramic radiographs were read by two oral and maxillofacial radiologists and h and wrist radiographs were read by two radiologists. Statistical analysis was performed by Paired T, Correlation coefficient, Wilcoxon, Smirnov - Kolmogorov. The least fault obtained from determined age and real patient age was related to the right m and ibular surgical wisdom teeth [1.6 months difference]. H and wrist radiographs had the most fault in age determination and both of the two radiologists determined the ages less than real ages [P=0.000]. In the statistical analysis, it seemed that the age determination from wisdom teeth by panoramic radiographs is just a suitable method. When age determination is considered to special case, the maxillary right wisdom teeth showed more proximity to real age [39.4%] and m and ibular left third molars [24.5%] and m and ibular right third molars [23.9%] were in the next steps. Age prediction by wisdom teeth on panoramic views is a proper way to report for legal medicine. Since the h and wrist radiographs had the most faults in age prediction, its advantage is not proposed, in individuals more than 18 years old

Clinical survey of ocular findings in patients with grave's disease

Grave's disease is an autoimmune process manifested by three hallmarks: hyper-thyroidism with diffuse goiter, ophthalmopathy and dermopathy. This disease usually occurs with hyper thyroidism; although the may be euthyroidism. To evaluate the ophthalmic lesion in patients with grave's disease according to sex, age, and the duration of the illness as well as the treatment. Ninety five patients [62% females and 38% males] with grave's disease were included in this study. The subjects underwent a complete ophthalmic examination and the results were recorded. The elevation of IOP and chemosis were significantly higher in males than in females. The prevalence of ophthalmopathy was 60%, and most common ophthalmic signs were proptosis and lid retraction. Eyes lesions were more frequent among 50-70 years old patients. In addition, chemosis, periorbital edema, corneal sensitivity secondary to dry eye, convergence insufficiency, diplopia and proptosis were positively correlated with age. Initially, ophthalmic complains were only given by 15% of the subjects. Lid retraction was decreased with prolonged duration of disease whereas chemosis, conjunctival congestion, and extra-ocular muscle enlargements were increased. Grave's ophthalmopathy was found mostly in males and proptosis with lid retractions were the most important signs of the disease.