background: in iran, architectures are often unaware of the risk of radon inhalation and how to reduce radon levels. furthermore, radon considerations are not implemented in construction methods, construction materials and building utilization by regulatory authorities. materials and methods: in this study after reviewing the meteorological changes of ramsar over the past 50 years (1955-2005), ...

background: the natural radioactivity level and the radon concentration of soil were measured at four important geothermal area located in dikili geothermal region, turkey. materials and methods: the natural radionuclide content of soil samples were measured by nai(tl) gamma spectrometer system and the soil radon concentration were determined using kodak-pethe lr-115 type ii solid state nuclear...

cyanobacteria are well known for their production of a multitude of highly toxic substances . the genus stigomena is regarded as good candidates for producing biologically active secondary metabolites, which are highly toxic to humans and other animals. the carcass of a dog was found at the shore of lake ali-abad, iran. biomass from the discovery site appeared to be of cyanobacterial nature. we...