ABSTRACT  Background: The essential constituents of cements like lime, silica and alumina are derived from earth’s crust in which radioactive elements like uranium, thorium etc are also present in varying amounts almost everywhere. These two elements are considered as the parent elements of uranium and thorium radioactive decay series in which radon and thoron are produced respectively as decay...

It was in 1913 that I first started work with radium in this Province. The supply which I had was very small and had been obtained for a special case. Later on, as success with this was maintained within the very small limits of its applicability Sir Edward Gait, Lieutenant-Governor of Bihar and Orissa, aided the work with a special grant in 1917, and in 1920 a scheme was put up which has resul...

Radon and radium could pose serious risk to human health that is why our preliminary research was concentrated on their concentration in tap drinking waters from the Kavadarci municipality. We sampled three locations within city limits there have been determined radon concentrations respectively. of 0.53 Bq/l; 0.70 Bq/l 0,87 were for samples K1, K2 K3, respectively, which are 12 21 times less t...

Spent or disused sealed radiation sources—no longer needed sources—may represent a risk of radiological accident or may be a target for criminal acts in countries where final disposal options are unavailable and where an increasing number of sources are being kept in extended storage. In developing countries, thousands of radium needles, teletherapy sources, oil well logging neutron sources, an...

Hammctt (I), using the qualitative nitroprusside reaation, demonstrated the destruction of glutathione when water solutions were irradiated with p and y rays from radium. Woodward (2) confirmed Hammett’s observations quantitatively with radon, but failed to find any destruction with as high as 15,600 r units of Roentgen rays. She used the accurate titration method of Woodward and Fry (3) for ma...