Lactarius delicious, insulsus, vellereus mantarlarının biyoaktif ve radyoaktif özellikleri araştırılmıştır bu amaçla Kastamonu ilinden toplanan mantarların protein toplam fenolik madde miktarları, antioksidan antimikrobiyal belirlenmiştir. Ayrıca mantarlardaki bazı eser element (Mg, Al, Ca, Mn, Fe, Co, Ni, Cu, Zn, Se, As, Cr, Cd) kurşunun üç izotopu (206Pb, 207Pb and 208Pb), doğal (238U, 232Th ...

Diatomite (diatomaceous earth) and clay minerals deposits from the mining basin Kolubara, Serbia, are natural materials with high economic potential in many fields. As received treated materials, diatomite were characterized using X-ray diffraction, mercury intrusion porosimetry, particle size distribution, scanning electron microscopy, Fourier-transform infrared spectroscopy. Activity concentr...

Tobacco samples were collected from different tobacco markets Antalya in Turkey. To calculate natural radionuclides activity concentration, counted for 86400 seconds by using high purity germanium (HPGe) detector. Activity concentrations of 226Ra, 232Th and 40K found higher than minimum detectable (MDA). 137Cs was not detected any sample. concentration range 83±15 Bqkg-1 to 325±45 Bqkg-1, 29±5 ...

Activity concentrations of radionuclides (238U, 226Ra, 232Th, and 40K) in the sediments eight sampling stations heavy metal (Cr, Co, Ni, Cu, Zn, As, Cd, Pb) two long cores from Nansha Sea area were obtained by high-purity germanium spectroscopy inductively coupled plasma atomic emission spectrometry. In a correlation analysis between metals, 232Th was positively correlated with As Pb. 238U demo...

Background: Human activities such as mining enhance the radioactivity levels above normal background which can lead to an incremental increase in the radiation risk to the population. Materials and Methods: 20 tailing enriched soil samples collected around Maiganga coal mine, Gombe, Northeast Nigeria were assessed for their 226Ra, 232Th and 40K contents using HPGe gamma-ray detector. Results: T...

Background: Knowledge of radioactivity levels in human diet is of particular concern for the estimation of possible radiological hazards to human health. However, very few surveys of radioactivity in food have been conducted in Iran therefore the baseline values of the natural radionuclides concentration (40K, 226Ra and 232Th), and man made radionuclide, 137Cs, were determined in twenty six...

Background: The existence of some radionuclides in soil and some building materials produce a β-γ radiation field, which in some regions the exposure of these radionuclides to human is high. Materials and Methods: The air-absorbed dose, indoor and outdoor annual effective dose of soil and some building material samples (ceramic, granite, gypsum, etc.). The samples were collected from 3...

background: the presence of radionuclides in the soil, measures need to be taken to minimize the radiation dose to humans. it is mostly gamma-emitting radionuclides that contribute to the radiation dose in long term behavior of these radionuclides in soil may determine the extent to which such countermeasures need to be applied. materials and methods: the activity concentration of these radionu...

This thesis deals with dilute fermionic and bosonic quantum gases in the nK temperature regime. In the work presented here, the first quantum-degenerate mixture of two different fermionic atomic species and the first triple-degenerate Fermi-Fermi-Bose mixture were produced. The quantum-degenerate mixtures were realized using sympathetic cooling of the fermionic species 6Li and 40K by an evapora...

The aim of the study was to determine activity concentration natural radionuclides (226Ra, 210Po, 228Ra and 40K) artificial radionuclide 137Cs in muscle marine fish species most consumed city São Paulo evaluate annual effective dose due consumption fish. Samples were collected supermarket chain Extra Carrefour distribution center CEAGESP. Six selected among available city: anchovy, tuna, dogfis...