The Environmental Protection Agency has proposed regulations that outline risk management program guidelines. The intent of these guidelines is to reduce the number and magnitude of accidents involving hazardous materials. The proposed regulations will require all facilities that process or store flammable or toxic materials in quantities greater than specified thresholds to register with the E...

The release of a part of the cell coat of Ehrlich ascites cells by chelation with ethylenediamine-tetraacetic acid modifies significatively the uptake of various radioactive molecules. This phenomenon seems to be related to a change in the permeabililty of the cell membrane. The chemical analyses of the released material appear to indicate that glycoproteins are involved in that change and that...

RADIATION SAFETY The radioactive sources used in this experiment are only a few microcuries in strength, and they are all sealed, so they actually pose no significant health hazard. However we will follow good safety procedure. Horseplay involving the sources is forbidden. While the sources are not dangerous, like any radioactive source they should be treated with respect and properly handled. ...

Models commonly used in tritium dose assessment are steady state specificactivity models based on the assumption of complete isotopic mixing with the stable element, and isotopic equilibrium between all environmental compartments (IAEA, 2010). These models may not be adapted to situations with fluctuating tritium levels in rivers, resulting from discontinuous radioactive discharges or accidenta...

Foreword 1. There is no safe level of radiation exposure. 2. It is unsafe to transport radioactive materials. 3. Uranium resources are too limited. 4. Uranium mining is environmentally damaging and unsafe. 5. The nuclear fuel cycle emits vast amounts of greenhouse gases. 6. Nuclear power is too expensive to build, operate and decommission. 7. Nuclear power reactors take too long to build. 8. Nu...

The Great East Japan Earthquake on 11 March 2011, caused the release of radioactive materials from the Fukushima Daiichi Nuclear Power Plant (FDNPP), contaminating eastern Japan, particularly in part of Fukushima Prefecture. In 2012 and 2014, the radiocaesium concentration in brown rice did not exceed regulatory levels in Minamisoma City, Fukushima. However, in 2013, some radiocaesium concentra...

Atoms of the radon daughters immediately after the radioactive decay of radon atoms have tendency to attach to condensation nuclei producing radioactive aerosols. Aerosols of size below 10 nm, composed of unattached ions or neutral atoms and molecular clusters associated with radon progeny atoms, are traditionally called unattached fraction. Aerosols above 10 nm up to greater than 1000 nm, with...

In many electricity markets, retailers purchase electricity at an unregulated spot price and sell to consumers at a heavily regulated price. Consequently the occurrence of extreme movements in the spot price represents a major source of risk to retailers and the accurate forecasting of these extreme events or price spikes is an important aspect of effective risk management. Traditional approach...

PURPOSE Medulloblastoma is the most common malignant brain tumor occurring in childhood and is a significant cause of morbidity and mortality in pediatric oncology. More intense treatment strategies are recommended for patients displaying high-risk factors; however, considerable variation in outcome remains, indicating a need for improved predictive markers. In this study, 1H magnetic resonance...