岡山大学温泉研究所
Acta Medica Okayama
0369-7142
49
1979
表紙
EN
Institute for Thermal Spring Research, Okayama University
No potential conflict of interest relevant to this article was reported.
岡山大学温泉研究所
Acta Medica Okayama
0369-7142
49
1979
目次
EN
Institute for Thermal Spring Research, Okayama University
No potential conflict of interest relevant to this article was reported.
岡山大学温泉研究所
Acta Medica Okayama
0369-7142
49
1979
放射能泉水の応用と呼気中へのRadonの排出について
1
6
EN
Katsushi
Furuno
10.18926/21168
Radon (Rn) contents in expired air after bathing, exposure in hot-air room and drinking of Misasa radioactive hot spring water were determined using an ionization chamber equiped with vibrating reed electrometer. The results were as follows; 1. Rn Contents in the indoor and outdoor air of Misasa spa were in the range of 0.5-1.0 pCi/ℓ and 0.4-0.7 pCi/ℓ. 2. Rn contents in the expired air of persons living at Misasa spa area and none spa area were 0.4-0.9 pCi/ℓ, 0.6±0.2 (S.D.) pCi/ℓ and 0.1-0.9 pCi/ℓ, 0.5±0.2 (S.D.) pCi/ℓ respectively and no difference of Rn contents was observed in both groups. 3. The highest Rn contents in the expired air of subjects bathed in radioactive hot spring (Rn ; 58.0×10(-10) Ci/kg, watre temp. : 41±1℃.) were immediately after bathing, and the values were 10.8-25.5 pCi/ℓ (bathing for 5 min.), 16.0-27.9 pCi/ℓ (bathing for 10 min.) and 38.8-59.3 pCi/ℓ (bathing for 15 min.) respectively. Rn contents in expired air were reduced to about 1.0 pCi/ℓ during 120-180 min. after bathing. The longer the bathing time and the younger the subjects, the higher Rn contents in the expired air. The biological half-life of Rn in the expired air of subjects after bathing was 42-43 min. 4. The highest Rn contents in the expired air of subjects exposed in hot-air room (Rn in air; 54.3pCi/ℓ, air temp. : 37-38℃., humidity: 40%, staying for 15 min.), and the values were 4.9-7.8 pCi/ℓ, and gradually reduced to about 1.0 pCi/ℓ during 120 min. The bioligical half-life of Rn in the expired air after leaving the hot-air room was 43 min. 5. Rn contents in the expired air of subjects immediately after drinking of radioactive spring water (Rn contents: 596.8×10(-10) Ci/kg, 500mℓ), were the highest, and the value were 28.0-101.5 pCi/ℓ, and reduced to about 1.0pCi/ℓ during 180 min. after drinking. The biological half-life of Rn in the expired air was 40 min.
No potential conflict of interest relevant to this article was reported.
岡山大学温泉研究所
Acta Medica Okayama
0369-7142
49
1979
始生代スペリオル区の岩石のアンモニウム
7
13
EN
Hiroji
Honma
10.18926/21169
Ammonium contents were determined for clastic sediments and associated volcanic rocks of the Kirkland Lake area, Abitibi greenstone- granite belt and metamorphic, migmatitic and granitic rocks of the Ear Falls-Dryden area, English River gneiss-granite belt. The NH(4) centents of Archean volcanic rocks (2700~2710m.y.) are very low (0~6 ppm) and immature argillites have also low contents of NH(4) (27~43ppm). On the other hand, a black shale from the Timiskaming Group (2100m.y.) are rich in graphite and pyrite and contain much NH4 (130ppm), providing a firm evidence of relatively abundant presence of an Archean biota compared with a sparcity of morphological record of Archean fossils. The NH(4) content of the rock mentioned above is about a third of those of the upper Proterozoic sediments and it remains to be established whether it reflects the abrupt break in the evolution of life near the Archean-Proterozoic boundary or not. A considerable amount of NH(4) is inherited by highly metamorphic pelitic gneisses and there may be a possibility for indirect prospection of early life by a study of NH(4) in highly metamorphic rocks of the early Archean. It was also found that the gneissic granitoid has much higher content of NH(4) than the post· kinematic massive granitoid.
No potential conflict of interest relevant to this article was reported.
岡山大学温泉研究所
Acta Medica Okayama
0369-7142
49
1979
三朝温泉地における湯治者の実態(第2報)
15
19
EN
Hiroshi
Morinaga
10.18926/21170
A general survey of the spa treatment at Misasa Spa carried out in February, 1979. The informations the author has gathered may be summarized as follows: 1. The majority of spa visitors was over 60 years old. 2. 47% of spa visitors came to this hot spring for rest and recreation, 43% for the purpose of balneotherapy of chronic rheumatic disorders and after-care. 3. Those who visited Misasa Spa for the first time were 32%, the rest being those who visited this spa over 2 times. 4. The length of time they stay at Misasa Spa for recreation was under 7 days, and for curative treatment was for about 2 weeks.
No potential conflict of interest relevant to this article was reported.
岡山大学温泉研究所
Acta Medica Okayama
0369-7142
49
1979
岡山大学温泉研究所業績目録
21
34
EN
Institute for Thermal Spring Research, Okayama University
No potential conflict of interest relevant to this article was reported.
岡山大学温泉研究所
Acta Medica Okayama
0369-7142
49
1979
奥付
EN
Institute for Thermal Spring Research, Okayama University
No potential conflict of interest relevant to this article was reported.
岡山大学温泉研究所
Acta Medica Okayama
0369-7142
49
1979
裏表紙
EN
Institute for Thermal Spring Research, Okayama University
No potential conflict of interest relevant to this article was reported.