著者

阪本 州弘 大和田 国夫 庄司 博延 田中 平三

出版者

The Japanese Society for Hygiene

雑誌

日本衛生学雑誌 (ISSN:00215082)

巻号頁・発行日

vol.25, no.5, pp.446-452, 1970-12-30 (Released:2009-02-17)

参考文献数

6

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A study was made on the relationship between birth order and menarche age of 1715 females students of high school and college in Osaka Prefecture in 1968. Results are as follows:1) The median of menarche age for birth order was 13 years and 1 month in the groups of one or two siblings with no relation of birth order. In 3 or over 4 sibling groups, however, the median of menarche age increased with an increase of birth order as follows; the median was 13 years, 13 years and 1 month, and 13 years and 4 months for the group of first, second and third birth order respectively.2) The distribution of the menarche age was analysed by the model in which was composed of 3 parameters of m, σ and λ; m was mean age in the complete stage of the preparation for menarche, σ was variance of the age and λ was the force of effect of external stimulation for menarche appearance.In a single sibling m was 12 years and 8 months, in two siblings group m was 12 years and 6 months, and 12 years and 10 months for first and second birth order respectively, therefore, the latter was 4 months later than the former. In the 3 siblings group, m became later with an increase of birth order as follows; 12 years and 7 months, 12 years and 6 months, 12 years and 9 months for the fiirst, second and third birth order respectively. λ was remarkably high in one sibling group and in the youngest for over two siblings groups.

著者

大和田 国夫 田中 平三 伊東 正明 政田 喜代子

出版者

The Japanese Society for Hygiene

雑誌

日本衛生学雑誌 (ISSN:00215082)

巻号頁・発行日

vol.27, no.2, pp.243-247, 1972-06-28 (Released:2009-02-17)

参考文献数

19

被引用文献数

10 5

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This paper is concerned with studying the developmental changes which occur in sensitivity to the 4 primary taste qualities viz. sweet (sucrose), sour (citric acid), bitter (quinine sulfate) and salty (sodium chloride).Results are as follows:1. Taste threshold values and difference threshold values for the 4 taste qualities increased with age and showed a peak at the age of 60. These values slightly decreased at the age of 70.2. An increase of salty taste threshold values with aging were more marked than other taste threshold values.3. Either sex failed to reveal significant differences for taste sensitivity.4. Significant differences in taste threshold, especially bitter taste, were observed between smokers and non-smokers.5. False dentures (complete) appeared to influence slightly taste threshold values.

著者

岡崎 邦夫 中山 行穂 大和田 国夫

出版者

Osaka Urban Living and Health Association

雑誌

生活衛生 (ISSN:05824176)

巻号頁・発行日

vol.21, no.6, pp.181-185, 1977-12-20 (Released:2010-03-11)

参考文献数

24

著者

光田 秀雄 山下 英年 大和田 国夫 吉村 正幹

出版者

Osaka Urban Living and Health Association

雑誌

生活衛生 (ISSN:05824176)

巻号頁・発行日

vol.27, no.5, pp.271-274, 1983-09-10 (Released:2010-03-11)

参考文献数

2

被引用文献数

1

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In measuring the amount of x-ray radiation through mass x-ray examination cars in O-city, two pieces of equipment giving of a high level of radiation were found in seven cars, the amount of each differing remarkably from the others. However, it was found that through improvement (of the quality) of the equipment, the amount of the radiation could be reduced to some extent. For instance, changing the fluoroscope resulted in a radiation reduction of 25% and a 36% reduction when supplemented by a filter. It was also found that voltage selection of the x-ray tube was important for achieving a reduction.

著者

大和田 国夫

出版者

社団法人 大阪生活衛生協会

雑誌

生活衛生 (ISSN:05824176)

巻号頁・発行日

vol.3, no.4, pp.154-162, 1959 (Released:2010-10-28)

参考文献数

25