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...

The aim of this study was to investigate the radioprotective effect of thymol as a natural product against salivary glands dysfunction induced by ionizing radiation in rats. The rats were treated with thymol at dose of 50 mg/Kg before exposure to radiation at dose 15Gy. Salivary gland function was evaluated with radioisotope scintigraphy and then salivary gland to background counts ratio was ca...

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...

The aim of this study was to investigate the radioprotective effect of thymol as a natural product against salivary glands dysfunction induced by ionizing radiation in rats. The rats were treated with thymol at dose of 50 mg/Kg before exposure to radiation at dose 15Gy. Salivary gland function was evaluated with radioisotope scintigraphy and then salivary gland to background counts ratio was ca...

The hot springs in certain areas of Ramsar contain (226)Ra and (222)Rn. The effects of natural radiation on the inhabitants of these areas and the inhabitant's radiosensitivity or adaptive responses were studied. One group of volunteers from areas with high natural background radiation and another group from areas with normal background radiation were chosen as the case and control group respec...