inspecting the behavior of the rockfill materials is of significant importance in analysis of rockfill dams. since the dimensions of grains in such materials are greater than the conventional sizes suitable for soil mechanics tests, it is necessary to experimentally study them in specific large-scale apparatuses. in this research, the behavior of rockfill materials in two large rockfill dams co...

radiography is one of the most valuable diagnostic tools used in comprehensive dental care. although there is no safe level of radiation exposure, the possible risk associated with exposure to radiation, must be elucidated. to date, a variety of assays have been proposed to assess the mutagenic potential of genotoxicants; however, these methods are typically laborious and time consuming. the ai...

due to the existence of fibrous materials such as plastic fragments, the strength anisotropy of municipal solid waste (msw) materials is the main source of differences between their mechanical response in direct shear and triaxial apparatus. as an extension of earlier research on the mechanical behavior of msw using a large traixail apparatus, results presented in shariatmadari et al. [1] and k...

large size direct shear tests (i.e.300 x 300mm) were conducted to investigate the interaction between clay reinforced with geogrids embedded in thin layers of sand. test results for the clay, sand, clay-sand, clay-geogrid, sandgeogrid and clay-sand-geogrid are discussed. thin layers of sand including 4, 6, 8, 10, 12 and 14mm were used to increase the interaction between the clay and the geogrid...

background : visceral leishmaniasis (kala-azar) is an endemic disease in some areas of iran. a cross- sectional study was conducted for sero-epidemiological survey of visceral leishmaniasis (vl) in baft district from kerman province, southeast of iran. methods: blood samples  were  collected  from children  up to 12 years old and 10% of adult population from baft villages with a multi-stage ran...

objective: the out-of-field/non-target effect is one of the most important phenomena of ionizing radiation that leads to molecular and cellular damage to distant non-irradiated tissues. the most important concern about this phenomenon is carcinogenesis many years after radiation treatment. in vivo mechanisms and consequences of this phenomenon are not known completely. therefore, this study aim...

introduction: since discovery of high frequency waves, their biological effects have been in great attention. increased male fertility problems proposed their possible relation to use of microwaves. testes are of very active body tissues, which can be affected by these waves. age of exposure may also be an important factor. methods: this study was carried out to evaluated testosterone level in ...

introduction: the aim of this trial was to compare clinical and radiographic success rates of direct pulp capping (dpc) using a novel biomaterial called calcium enriched mixture (cem) cement versus mineral trioxide aggregate (mta) in primary molar teeth. materials and methods: in this randomized clinical trial 42 deciduous molars in 21 patients who had at least two teeth requiring dpc, were tre...