current sampling instruments of respirable dust (rd) may over estimate the inhaled dose by up to 400% depending on the size distribution of airborne dust. this limitation and the practice of assigning a single value for rd to all jobs regardless of the level of activity are incompatible with the advances in occupational epidemiology. a new dust sampler designed to estimate pulmonary deposition ...

Background: The incidence of glucose-6-phosphate dehydrogenase (G-6-PD) deficiency in Iran is estimated at 10-14.9%.  The donor blood in blood banks is not screened routinely for this enzyme deficiency and such blood may be used for neonatal exchange transfusion.Objective: To study the effect of G-6-PD deficient blood in neonatal exchange blood transfusion.Methods: In a prospective study, serum...

 Background: One third of patients with Parkinson’s disease (PD) have mentioned “dysphonia” as their most debilitating communication deficit. Patient-based measurements, such as Voice Handicap Index (VHI) add necessary supplementary information to clinical and physiological assessment. There are a few studies about relation between VHI and disease severity in PD, although none of them showed an...

normal 0 false false false en-us x-none fa microsoftinternetexplorer4 aim : this study aimed to determine the association between pd-1.5c/t (rs2227981, +7785) and the risk of gastric cancer (gc) in an iranian population. background : gastric cancer is the fourth most common cancer in the world. the programmed death 1 (pd-1) is a member of the cd28 super family. pd-1 is a negative regulator of t...