one of the most important methods to produce sponge iron is coal based reduction of iron ore. direct reduction methods based on coal are being improved due to the abundance of coal sources and its lower cost in comparison with natural gas. volatile materials in coal play an important role in the reduction of iron oxides. in this study, noncoking coal with high volatile materials from iran and c...

background reduction mammaplasty (rm) is among the commonly performed procedures by plastic surgeons. occult breast cancers are rarely detected in these specimens. the purpose of the study was to describe histopathological evaluation of reduction mammaplasty specimens to detect occult breast cancer in southern iran. methods the histological diagnosis of 350 rm specimens from 175 patients to det...

absorptive characteristics of polyaniline synthesized in different solvents were studied. water and mixture of water with other solvents were implemented for polyaniline synthesis. synthesized polyanilines in powder shape is used as an adsorbent to remove toxic hexavalent chromium from aqueous solutions. experiments were conducted in batch mode. removal mechanism involving polyaniline is the co...

due to shortage of precipitation and the spatial and periodical disparity of rainfalls, iran iscounted among the arid and semi-arid countries of the world, and therefore the water utilities have put thecontrol of consumption and efficient use of water high on their priorities. water consumption management isconsidered as a field of energy management, and the impacts of effective measure related...

the speech enhancement techniques are often employed to improve the quality and intelligibility of the noisy speech signals. this paper discusses a novel technique for speech enhancement which is based on singular value decomposition. this implementation utilizes a genetic algorithm based optimization method for reducing the effects of environmental noises from the singular vectors as well as t...

in western asia, afghan refugees constitute one of the main vulnerable populations with drug and hiv treatment needs. however, there is not considerable provision of drug and hiv services for this group. the study aimed to describe the provision of drug treatment and harm reduction services for afghan refugees in iran, the most populous persian gulf country. with the collaboration of the united...

background many young women are satisfied with their large breasts but suffer from sagging due to heaviness. in this article we present a novel modification of vertical scar breast reduction based on a special indication. methods from january 2006 to may 2012, twenty five individual patients underwent operation using modified technique with superior pedicle and vertical scar. young women betwee...

the exposure of workers to magnetic field that occur in aluminum reduction potrooms has been studied. the pattern of magnetic field intensity has been demonstrated along the shop. it has clearly been shown that the personnel working near the pots are exposed to 20-to 1000-gauss magnetic field. to set limits of exposure to magnetic fields, the literature on the biological effects of stationary m...

due to unique applications of palladium nanoparticles, synthesis of these nanoparticles by a simple andlow cost method is very important. in this work, pd nanoparticles were synthesized with narrow sizedistribution by loading metal salt (pd(oac)2 ) into the polymeric matrix (peg) as reducing agent andstabilizer. also, the effect of metal salt concentration and peg molecular weight on the conver...