All issues
Volume 3, Issue 1
Displaying 1-7 of 7 articles from this issue
- |<
- <
- 1
- >
- >|
-
T. R. FOLSOM, G. J. MOHANRAO1962 Volume 3 Issue 1 Pages 1-3
Published: March 01, 1962
Released on J-STAGE: August 29, 2006
JOURNAL FREE ACCESSRepeated measurements of specimens of surface sea water taken last year at a single nearshore, coastal, sampling point fluctuated widely, from 0.046 to 0.23 micromicrocuries/liter. These are consistent with other measurements made off California, but much lower than those reported for the Western Pacific.View full abstractDownload PDF (124K) -
Noboru YAMAGATA, Sadao MURATA, Tetsuya TORII1962 Volume 3 Issue 1 Pages 4-8
Published: March 01, 1962
Released on J-STAGE: August 29, 2006
JOURNAL FREE ACCESSSpectrophotometric analyses have been made of common cobalt in the human tissues and organs from autopsies to determine the normal concentration and to estimate the total body amount. Bone has the highest concentration of cobalt among the examined tissues, 0.036 μg per gram of fresh tissue on average. The amount in the total body has been estimated as 1.6 × 10-6% by weight and 0.0011 gram for the standard man of 70 kg body weight. These values are smaller by a factor of 3 than the maximum values presented in the ICRPRecommendations.View full abstractDownload PDF (182K) -
Noboru YAMAGATA1962 Volume 3 Issue 1 Pages 9-30
Published: March 01, 1962
Released on J-STAGE: August 29, 2006
JOURNAL FREE ACCESSMeasurements have been made of potassium, rubidium and cesium in the human soft tissues, muscles and bones from autopsies to determine the normal concentrations of these elements and to estimate the total body amount.
The individual variability of concentration increases in the following order : K Rb Cs and the distribution pattern of potassium in muscle suggests a normal distribution and the observed distribution of stable cesium and the Cs/K ratio in muscle appear to be lognormal.
A fairly good agreement is observed in rubidium data with those reported by other workers, however, discrepancy in cesium data is observed between the author and other workers. The amount of potassium, rubidium and cesium in the total body estimated from the concentrations of these elements in the soft tissues, muscle and bone is, respectively, 136±28 grams, 0.36±0.09 grams and 1.4 × 10-3 grams (95% probable range : 0.50—4.1 × 10-3) for the standard man of 70 kg body weight.View full abstractDownload PDF (726K) -
H. J. MELCHING1962 Volume 3 Issue 1 Pages 31-40
Published: March 01, 1962
Released on J-STAGE: August 29, 2006
JOURNAL FREE ACCESSDownload PDF (297K) -
H. LANGENDORFF1962 Volume 3 Issue 1 Pages 41-47
Published: March 01, 1962
Released on J-STAGE: August 29, 2006
JOURNAL FREE ACCESSDownload PDF (390K) -
Noboru YAMAGATA, Kiyoshi IWASHIMA1962 Volume 3 Issue 1 Pages 48-62
Published: March 01, 1962
Released on J-STAGE: August 29, 2006
JOURNAL FREE ACCESSMeasurements have been made on the radioactivity of dust, foodstuffs, lungs and thyroids of man and animals since October to December 1961. The concentration of 131I in air showed a maximum of 2.07 μμc/m3 on November 6 and the average for the second half of November was 0.62 which value decreased to less than 0.2 in December. Spinach samples showed remarkable contamination with fission products, the maximum being 16 mμc of 131I per fresh kg.
Average intake of 131I by population through ingestion of leafy vegetables was estimated as 100-300 μμc in November and 7-20 μμc in December. The contribution of milk in daily intake was less than 10% of that of leafy vegetables which was considered the main channel of transmittance of 131I to the human population of Japan.
A greater risk would be involved to breast-fed baby than bottle-fed one since the latter consumes canned powder milk in Japan and the former would be greatly influenced by its mother's diet composition.
The level of 131I in human thyroids from 52 persons who died during the period December 4-12 in Tokyo was less than 5.6 μμc/fresh g on the average ; the thyroid burden was estimated as 100-165 μμc of human population in the period November-December 1961.View full abstractDownload PDF (472K) -
Yoshio HIYAMA, Hiroshi HAYAMI, Noboru YAMAGATA, Hironobu WATANABE, Ryu ...1962 Volume 3 Issue 1 Pages 63-78
Published: March 01, 1962
Released on J-STAGE: August 29, 2006
JOURNAL FREE ACCESSAs data coming out from Japan on the level of contamination of food by radio-active fall-out from the nuclear weapon tests often differs remarkably from that obtained in other countries, an investigation was made to find the radio-ecological reason for it. We found less contribution of milk to total diet than European and American countries in Japan where various kinds of food of plant origin are contributing significantly and the level in the total diet only can be taken as standard because that in milk or in other food can not be a proportional to it. As more seasonal products are taken than continuous products in Japan, the mean storage time in diet is roughly measured as half a year. From the relation between the fall-out level on ground and in the diet, a rough measure to know about Sr-90 and Cs-137 level in the total diet was made using the accumulated ground deposit and the fall-rate in Tokyo. These differences between Japan and others are thought to be caused by the difference of usage of land surface for food production.View full abstractDownload PDF (434K)
- |<
- <
- 1
- >
- >|