background: radon is an odourless, colourless and tasteless gas and it is the first cause of lung cancer among non- smokers. the assessment of the level of radium in building materials helps in understanding the radiological implications. it has been observed that everyone has some levels of exposure to them. therefore measurement of radium and radon in the soil samples are important from publi...

Many pyrotechnic devices contain barium nitrate which is used as an oxidizer and colouring agent primarily for green-coloured fireworks. Similarly, strontium nitrate is used for red-coloured pyrotechnic effects. Due to their chemical similarities to radium, barium and strontium ores can accumulate radium, causing a remarkable activity in these minerals. Radium in such contaminated raw materials...

1 Department of Radiology and Nuclear Medicine, Oslo University Hospital, Nydalen, Oslo, Norway; 2 Institute for Clinical Medicine, University of Oslo, Blindern, Oslo, Norway; 3 Department of Oncology, Oslo University Hospital, The Norwegian Radium Hospital, Nydalen, Oslo, Norway; 4 Department of Pathology, Oslo University Hospital, The Norwegian Radium Hospital, Nydalen, Oslo, Norway and 5 Fac...

The introduction of the Heisenberg Uncertainty principle and Nuclear Cardiology occurred simultaneously in 1925-1927. Thirty years later the Anger gamma camera would allow for a more sophisticated radioactive isotope counting to determine the presence or absence of disease. When employed with technetium-99m isotopes, ischemic heart disease can be inferred by differences in visual appearance of ...

Historically, plutonium still may be considered a material of very recent vintage, having been discovered only 24 years ago by Seaborg, McMillan, Kennedy, and Wahl [1]. Within a few months 239 after discovery, the fissionable properties of the Pu isotope were established by the same group using an amount of material (0.5 Bg) equal to what is now considered to be approximately one maximum permis...

States have handled plutonium. Of those workers, only about fifty, all from the nuclear-weapons complex, have been exposed to plutonium at levels above the maximum permissible dose. Because so few people have high-dose exposures, we have little direct information about the risk of plutonium in man. This leads to the ironic situation that the better we protect our workers, the less we know about...

The rapid rise of shale gas development through horizontal drilling and high volume hydraulic fracturing has expanded the extraction of hydrocarbon resources in the U.S. The rise of shale gas development has triggered an intense public debate regarding the potential environmental and human health effects from hydraulic fracturing. This paper provides a critical review of the potential risks tha...

ANY observers have reported an increase in variability following exposure of pollen or seeds to the effect of ionizing radiation. In several respects the tomato is favorable material for such studies. I t is self-pollinating, and recessive mutants can therefore be uncovered promptly. It is a perennial and can be propagated by cuttings, so that plants of a previous generation can be retained, an...

The Crozet Archipelago, in the Indian sector of the Southern Ocean, constitutes one of the few physical barriers to the Antarctic Circumpolar Current. Interaction of the currents with the sediments deposited on the margins of these islands contributes to the supply of chemical elements—including iron and other micro-nutrients—to offshore high-nutrient, low-chlorophyll (HNLC) waters. This natura...