fifty street dust samples were collected from southern and eastern parts of tehran, the capitalof iran. samples were collected during summer under dry and stable weather conditions. total concentrationsof copper (cu), cadmium (cd), lead (pb), chromium (cr), nickel (ni), zinc (zn), iron (fe), manganese (mn)and lithium (li) were determined. ten samples were then selected for characterization, met...

The detection of hard exudation in diabetic retinopathy is a hot topic medical image segmentation. Aiming at the irregular shape and different size lesion area Hard Exudates segmentation task common few-shot learning challenge task, Global-Local Ensemble Robust U-Net proposed. network consists Global Contour Extraction for extracting long-range semantics exudates contour which use complete trai...

urban landscape structural analysis; focused on the remnant patch mosaic network as the component with closest interdependency with air and water related processes was undertaken to find and propose environmental planning suggestions.assessments demonstrate that remnant patch mosaic network structure of tehran is still restorable. with appropriate corrective measures based on the natural lay ou...

objective: to evaluate the feasibility and results of using serosal patch of small bowel for repair and replacement of inferior vena cava (ivc) after resection of a part of infra-renal ivc in an animal model, as it may be encountered in extensive tumors of retroperitoneal and trauma patients. methods: five healthy sheep of both sexes were prepared. after general anesthesia and laparotomy, a def...

increasing patch edges in natural habitats, as a result of habitat fragmentation, are a major threat for wildlife populations, especially avifaunal communities. habitat edges provide different conditions compared to the core area which can directly or indirectly cause changes in species number, population and composition. this fact will demand a dissimilar management strategy. this study was co...

the study aimed to come up with a list of specific macroalgae species, which could be used to biomonitor specific metal elements in the coastal waters of east africa. water extraction, edta, aqua regia extraction and optimized bcr 3-step sequential extracts were used to mimic bioavailable metals under various environmental conditions. the results indicated that ulva lactuca could be used as a ...