There is a vigorous debate about whether or not there may be a "threshold" for radiation-induced adverse health effects. A linear-no threshold (LNT) model allows radiation protection practitioners to manage putative risk consistently, because different types of exposure, exposures at different times, and exposures to different organs may be summed. If we are to argue to regulators and the publi...

by R. Mukherjee and J. Mircheva H, I ealth risks from exposure to low levels of ionizing radiation, particularly those relating to cancer, invariably command considerable attention. Recent reports about radon levels in homes and buildings, the extensive fallout from the 1986 Chernobyl nuclear plant accident, and suspected cancer clusters around nuclear facilities have contributed to a heightene...

As an environmental agent that is toxic at high concentrations, radon can exert a beneficial effect on the immune system when it generates low radiation doses in man. This paper is a brief examination of this effect and considers in particular that produced by low radiation doses and their mechanisms of action. It also analyses the effects found in the study of human populations exposed to low ...

We present spectra of the diffuse FUV (900 – 1200 Å) emission from a region near the Orion Nebula: the first high resolution spectra of the diffuse background radiation. These observations were made using serendipitous FUSE observations and were only possible because of the strength of the diffuse emission (≈ 3× 10 photons cm sr s Å) and the sensitivity of the FUSE instrument. Preliminary model...