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- W1488224813 abstract "The paper describes a simple technique for the measurement of alpha activity of a wide range of substances without elaborate chemical preparation. A new method has been devised in estimating the fraction of the total alpha activity due to members of the thorium series. Measurements have been made of tbe alpha activity of the bones of two radium workers and also patients to whom radioactive materials have been administered. Observations have also been made of the alpha-ray activities of skeletons of persons living in different parts of the United Kingdom; these include stillborn children. It is shown that there are some differences with geographical situation but very little difference in concentration with the age of the subject. Observations have also been made on a number of animals, types of soils and fertilizers and many other environmental materials some of which prove to have high thorium contents. Results are described of a balance experiment on a normal young human subject whose radioactive intake and excretion were measured daily over a period of a month. These studies involve the measurement of the alpha activity of all types of foods ingested by the subject as well as the activities of faecal samples. Itmore » is shown that food in this instance constitutes an important factor in the daily intake and may reach levels approaching whole body burden. Most of the radioactivity is exereted during the first 48 hours. The significance of these findings is discussed. These physiological investigations have concentrated attention upon the mechanisms controlling the retention of radioactive materials in the body. (auth)« less" @default.
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- W1488224813 date "1959-10-31" @default.
- W1488224813 modified "2023-09-27" @default.
- W1488224813 title "THE ALPHA-RAY ACTIVITY OF HUMANS AND THEIR ENVIRONMENT" @default.
- W1488224813 hasPublicationYear "1959" @default.
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