Radionuclide

Today Bioremediation has gained unparalleled importance in scientific fields. The term bioremediation very effectively describes its most important characteristic which is the use of living microorganisms for the improvement of the environment and maintaining a homeostasis in the ecosystem. It is used to clean up a vast range of hazardous waste from industries, farms, cities etc. These days the amount of pollutants and the variety of pollutants in the environment are increasing exponentially. This

1998). Moreover, the geochemical tracer method can also be applied to contemporary and historic sedimentary deposits for reconstructing temporal changes in sediment provenance at the catchment scale (Thevenon et al. 2013). 4.3 Radionuclides Atmospheric fallout radionuclides(FRN), such as 7Be, 10Be, 137Cs, 210Pb, 239Pu and 240Pu, effectively tag surface sediments and the concentration declines markedly with depth and are preferentially absorbed to clay minerals and organic matter due to their high

What are radiopharmaceuticals and their effect in medicine? Radiopharmaceuticals are pharmaceutical compounds comprising of radioisotopes and organic carrier molecules, they’re derived to assist diagnostic and therapeutic procedures in the medical industry. The composition of radioactive pharmaceuticals is dependent on the intended physiological purpose concerning a specific organ. The radioisotope, within the radiopharmaceutical, emits gamma radiation through its decay (to obtain stability) whilst

collected materials are analyzed using gamma ray spectrometry. The activity concentration of the naturally occurring radionuclides 226Ra, 232Th and 40K in building material it varies from 12.6 to 121.4, 13.6 to 142 and 69.5 to 620.6 Bqkg_1, respectively. The radium equivalent activity, absorbed dose rate, annual effective dose and hazard index are also calculated. Keywords Radionuclides, radiological hazard, building material radioactive 1. Introduction Natural sources exists in several geological

collected materials are tested using gamma ray spectrometry. The activity concentration of the naturally occurring radionuclides 226Ra, 232Th and 40K in building material it varies from 12.6 to 121.4, 13.6 to 142 and from 69.5 to 620.6 Bqkg_1, respectively. The radium equivalent activity, the absorbed dose rate, annual effective dose and hazard index is also calculated Keywords Radionuclides, radiological hazard, building material radioactive 1. Introduction Natural sources exist in several geological

40K is a naturally occurring isotope of potassium (a soft, silver-white metal that is distributed and present in both plants and animal tissues and in soil.). 1. It has an atomic abundance of about 0.012%; a half-life of 1.3 billion years; a specific activity of 2.6 × 108 Bq/kg; and a rounded dose conversion coefficient of 0.003 mSv/a per Bq/kg, 2. Its annual equivalent doses in tissues from in the body are 0.165 and 0.185 mSv for adults and children; respectively 3. It is the radioactive isotope

Myocardial Perfusion Imaging also known as MPI is an imaging modality used in nuclear medicine to demonstrate the heart muscle functions; a low dose of radioactive agent is used for this study usually technetium -99m based radiotracer. There are two different types of techniques used for myocardial perfusion imaging, single photon emission computed tomography (SPECT) and positron emission tomography (PET). Myocardial perfusion imaging is usually done for patients who experience some type of chest

As Mary Mycio points out in Wormwood Forest, “Just because a radionuclide is in the ground doesn’t mean that it is bioavailable” (49). In order to be integrated into living things, the radionuclide “must resemble something the organisms need” (49). Two of the most common radionuclides in plants are cesium and strontium because of cesium’s chemical similarity to potassium and strontium’s chemical similarity to calcium. Calcium

Abstract: This scientific research will look at and discuss the effects on varies biological areas including the effect on the environment, human health and waterways should a leak from a radioactive waste storage occur. The significance of focusing on this particular area of science is that although in today’s world radioactive active waste is produce from usually a beneficial application it must monitored closely using strict management strategies which will also be analysed within this paper.

risks can be measured in a variety of ways including: estimated frequencies of core damage accidents from both internally and externally initiated events, the likelihood of a containment structures encompassing radionuclides under accident loadings; the potential magnitude of radionuclide release, and their offsite consequences associated with the release. This forms the basic structure of each level of a level 1, 2 and 3 PSA respectively. The methodologies for each PSA Level will be compared to