All existing 10 Be records from Greenland and Antarctica show increasing concentrations during the Maunder Minimum period (MM), 1645–1715, when solar activity was very low and the climate was colder (little ice age). In detail, however, the 10 Be records deviate from each other. We investigate to what extent climatic changes influence the 5 10 Be measured in ice by modeling this period using th...

to assess the environmental radioactivity levels and hence to determine the population exposure in kutubdia island, bangladesh the sediment samples were analyzed by using gamma ray spectrometry. in those sediment samples the average activity concentration of natural radionuclides 238u, 232th and 40k were found 15.39±1.67, 38.35±0.76 and 475.51±21.15 bq/kg respectively. the activity concentratio...

Details about gastric physiology and pathophysiology are described. Other methods, some of them not used today, are also mentioned. Gastric emptying by radionuclides is important for checking normal function of the upper digestive system. The fried eggs etc. technique and not the liquid meal technique is preferred. In conclusion, gastric emptying by radionuclides, although other techniques have...

Excitation functions, thinand thick-target yields for the Re radionuclides were measured by the activation method on natural tungsten foils for proton energies up to 17 MeV. A new data set has been given for the investigated radionuclides. These results are compared both with the experimental literature values and the ones calculated by the EMPIRE II code (version 2.19). In particular, the atte...

Selected results are presented and discussed concerning nuclear data relevant to the production of innovative medical radionuclides (RNs) of special interest, measurements of excitation functions of the involved nuclear reactions, in comparison with the corresponding theoretical calculations. Moreover, at the Radiochemistry Laboratory of Accelerators and Applied Superconductivity Laboratory, LA...

Children’s exposure to high-LET α-radionuclides is dominated by that from natural sources. If we consider the dose to bone marrow in childhood and the in utero dose to haemopoietic tissue, the important short-lived radionuclides of interest are those derived from radon and its immediate decay products (figure 1). For the long-lived α-radionuclides, Po and Ra are by far the most important, the f...

We investigated the accumulation of radionuclides in frogs inhabiting radioactively contaminated areas around Fukushima Daiichi Nuclear Power Plant (FDNPP) to search for possible adverse effects due to radionuclides. We collected 5 frog species and soil samples in areas within and outside a 20-km radius from FDNPP in August and September 2012 and determined their radiocesium concentrations ((13...

Progress Report: RESEARCH OBJECTIVE This project serves to fill information gap through the development of a novel surface-enhanced Raman scattering (SERS) spectroscopy to selectively and sensitively monitor and characterize the chemical speciation of radionuclides at trace levels. The SERS technique permits both of these measurements to be made simultaneously, and results in significant improv...

Topicality of the ionizing radiation impact on organisms is conditioned by Nuclear Power Plants (NPP), releasing of various technogenic radionuclides into the environment during the operational period in different in different way. Chronic exposure of low doses of ionizing radiation to biota is an invisible, however, inevitable factor of the environment (Lu et al., 2006; Geras’kin et al., 2007;...