J Nucl Med. Sui Shen, Gerald L. DeNardo, George Sgouros, Robert T. O'Donnell and Sally J. DeNardo Concentration in Blood and Body Practical Determination of Patient-Specific Marrow Dose Using Radioactivity http://jnm.snmjournals.org/content/40/12/2102 This article and updated information are available at: http://jnm.snmjournals.org/site/subscriptions/online.xhtml Information about subscriptions...

We analyze nonstationary 137Cs atmospheric activity concentration fluctuations measured near Chernobyl after the 1986 disaster and find three new results: (i) the histogram of fluctuations is well described by a log-normal distribution; (ii) there is a pronounced spectral component with period T=1yr, and (iii) the fluctuations are long-range correlated. These findings allow us to quantify two f...

Many materials that are usually found in the earth's crust contain small but measurable amount of naturally occurring radioactivity (NORM). Some particular ores contain natural radionuclide at levels much higher those usually present in earth's crust; and are also subject to radioisotope enrichment, during technological process, known as technologically enhanced natural radioactivity (TENORM). ...

the biliary excretion and blood/plasma ratios of four novel 5-bromo-6-alkoxy- 5,6-dihydro prodrugs to s-ethyl-2'-deoxyuridine (edu) including (-)-trans-(5s, 6s)-s-bromo-s-ethyl-6-methoxy-s, 6-dihydro-2'-deoxyuridine (bmedu), (+ )-trans( sr, 6r)-s-bromo-s-ethyl-6-ethoxy-s, 6-deoxyuridine (beedu), (+ )-trans-(sr, 6r)-5-bromo-5-ethyl-6-ethoxy -s, 6-dihydro-s '-o-valeryl-2 ':.de...

1. Rat thymus cells were incubated in homologous serum (10%) and medium 199. The effects of various quantities of thymidine or deoxycytidine (0-30mum) on the radioactive labelling of cells with the corresponding radioactive deoxynucleoside were examined. From plots of the reciprocal of the radioactivity incorporated against the total deoxynucleoside concentration (;isotope-dilution plots'), val...

In the present work, we determined activity concentrations of ten Medicinal herbs using gamma spectrometry. The radioactivity concentration 226 Ra, 232 Th, 40 K and 137 Cs were 2.82, 0.63, 984.32, 0.28 Bq/kg, respectively. These doses are not hazardous to general public's health. mean values radium equivalent (Raeq), absorbed dose rates (D), annual effective (De) external hazard index (Hex) 79....

background: the concentrations and distributions of natural and anthropogenic radioactive materials in soils of the site of rooppur nuclear power plant (rnpp) were investigated with the aim of evaluating the environmental radioactivity and radiation hazard. materials and methods: soil samples were collected from 40 locations in and around the proposed site of rooppur power plant and determined ...