日本衛生学雑誌
Online ISSN : 1882-6482
Print ISSN : 0021-5082
ISSN-L : 0021-5082
17 巻, 4-5 号
選択された号の論文の4件中1~4を表示しています
  • 第1報 人体皮膚及び繊維材料の摩擦帯電性並びに浮遊塵埃に対する吸引性について
    奥窪 朝子
    1962 年 17 巻 4-5 号 p. 197-206
    発行日: 1962/12/10
    公開日: 2009/04/03
    ジャーナル フリー
    The static electricity and the electrification of human skin and textiles, and the effects of frictional electrification on the soiling of textiles by floating dusts were examined by the Rotary Static Tester of the Kyoto University Chemical Laboratory, and the following results were obtained.
    1) The static electricity of textiles fell in the following order:
    (+) Nylon, wool, silk, viscose rayon, cotton, acetate rayon, vinylon, tetoron, vonnel, kanekalon, teviron (-)
    2) Individual difference was recognized in the static electricity of human skin, spreading widely between wool and tetoron. Ninety-two (75.4%) out of 122 showed the order approximately similar to that of viscose rayon, cotton, and acetate rayon. There was no significant difference between both sexes.
    3) At friction of dead skin and textile, nylon showed the highest positive frictional electrification and teviron the highest negative. While, cotton and viscose rayon showed little electrification. Dead skin showed the electrification of the opposite sign to the textile. Since no difference between the static electricity of living and dead skin of animals was recognized, it was presumed that the similar tendency would be observed in human skin.
    4) There was a close relation between soiling by floating dusts and electrification of textiles. As synthetic fibers showed higher electrification than natural fibers, the former was more easily soiled than the latter.
  • 第2報 摩擦帯電現象におよぼす汚染の影響
    奥窪 朝子
    1962 年 17 巻 4-5 号 p. 207-213
    発行日: 1962/12/10
    公開日: 2009/04/03
    ジャーナル フリー
    The effects of soiling of the inner surface of clothing by artificial sweat and carbon black on the electrostatic phenomenon were examined from the hygienic point of view, and the following results were obtained.
    1) When textiles were soiled by artificial sweat, no change was shown in the order of the static electricity of kanekalon and teviron, but the order of nylon, wool, cotton, vinylon, and tetoron shifted from positive to negative. With the increase of concentration of artificial sweat, this phenomenon was more obviously observed.
    2) When the clothing materials were worn, the order of the static electricity of the materials tended to shift to negative.
    3) The order of the static electricity of teviron, nylon, and cotton fell between vinylon and tetoron when the textiles were soiled by carbon black to the degree of 80% of soiling index 100×(R0-Rs)/R0; where
    R0: the reflection factor of the unsoiled materials
    Rs: the reflection factor of the soiled materials)
    4) Upon soiling by artificial sweat and carbon black, the voltage of electrification tended to drop gradually with the increase of soiling.
  • 山本 剛夫, 西田 耕之助, 中村 隆一, 伴野 和佐子, 上野 碩夫
    1962 年 17 巻 4-5 号 p. 214-220
    発行日: 1962/12/10
    公開日: 2009/04/03
    ジャーナル フリー
    Lighting conditions of eight schoolrooms were investigated in order to obtain the appropriate lighting standards for schoolroom. The following results were obtained.
    1) Lighting standards, which are applicable to schoolroom, were proposed by introducing a partial modification of Moon and Spencer's standards.
    2) Generally, the values of delos, which is introduced by Moon and Spencer, were insufficient: and the distribution of illumination in the school rooms was not uniform excepting the case of artificial lighting.
    3) Helios distribution was also not uniform in about half the schoolrooms.
    4) Annoying glare due to specular reflection of black board was observed, in about 2/3 of the schoolrooms.
  • 水野 哲夫, 柳沢 利喜雄
    1962 年 17 巻 4-5 号 p. 221-227
    発行日: 1962/12/10
    公開日: 2009/04/03
    ジャーナル フリー
    The cutaneous infections in human host with the infective larvae of Ancylostoma duodenale and Necator americanus were carried out in many volunteers in order to determine the infection mode of hookworm. The results were as follows.
    1. In Necator americanus cases the rate of number of worms expelled by anthelmintic treatment to number of larvae penetrated into the skin was 13.1% and the corrected rate was 13.5%.
    2. In Ancylostoma duodenale cases the rates mentioned above were 3.8% and 4.1% respectively.
    3. From the results mentioned above the authors consider that Necator americanus can more easily infect in human host percutaneously than Ancylostoma duodenale.
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