Objective: Teeth are used as an important data source to estimate radioactivity accumulation in individuals. This study aimed evaluation the gross alpha (GA) and beta (GB) concentrations tooth samples.Methods: Mandibular permanent first molar teeth of individuals living Middle Black Sea region were for ensure standardization. The samples divided into 4 groups according age factor (Group 1: 6-15...

Studies of gross alpha and beta activity in road- surface-deposited sediments were conducted three Russian cities different geographical zones. To perform radiation measurements, new methods applied which allow dealing with low mass volume dust-sized (2–100 ?m) samples obtained after the size fractionation procedure. The 2–10 ?m fraction had highest concentration (GB)—1.32 Bq/g Nizhny Novgorod ...

PURPOSE The purpose of this study was to investigate the possible radioactive potential of zirconium dioxide (ZrO2) dental ceramics. Such information is necessary since they became an integral part of routine prosthetic rehabilitations and devoid of scientific information about their radioactivity creates some concern in the dental community. METHODS Four different types of commercial ZrO2 ce...

Background:The natural radioactivity levels in soil samples of Karadağ Mountain in central Anatolia region have been determined. Materials and Methods: Analyses on the collected samples were performed to determine gross alpha and beta radioactivity concentrations by using a gas-flow proportional counter and the concentrations of 238U, 232Th and 40K by using a NaI(Tl) scintillation detector. Res...

Beta-decay gross properties of neutron-rich isotopes 104 Y and Tc produced in 25 MeV proton-induced fission of U have been measured. Decays of 104 Y with a half-life of 180"60 ms and of Tc with a half-life of 150"30 ms are 112,113,114 Ž . reported for the first time. Beta-delayed neutron emission probabilities of Tc are determined as 1.5"0.2 %, Ž . Ž . 2.1"0.3 % and 1.3"0.4 %, respectively. Com...