生活衛生
Online ISSN : 1883-6631
Print ISSN : 0582-4176
ISSN-L : 0582-4176
53 巻, 1 号
選択された号の論文の4件中1~4を表示しています
解説
  • ―廃棄物処理施設での事故原因が教える意外な落とし穴―
    酒井 護, 山本 攻
    2009 年 53 巻 1 号 p. 3-10
    発行日: 2009/01/30
    公開日: 2009/02/09
    ジャーナル フリー
    Decreasing the number of occupational accidents in the waste-management industry is an urgent task as accidents occur more frequently in this industry than in others. The present report investigated accidents involving chemicals in the waste-management and chemical industries and proposed an accident prevention procedure in the form of a flow chart. The causes of the accidents were classified into two kinds of factor: “hardware” problems, which are due to a mechanical failure or a disordered working environment, and “software” problems, which are due to human error or climate of the organization.
    The resulting flow chart, consisting of the key words or key sentences extracted from the accidents, presents a range of procedures from investigation of the causes of accidents to consideration of specific response measures. It was shown that occupational accidents and serious incidents could be prevented using the same procedure regardless of the kind of accident, including fire, explosion, oxygen deficiency and poisoning.
報文
  • 竹村 浩, 塩谷 順彦, 小森 美加, 陶 易王
    2009 年 53 巻 1 号 p. 11-18
    発行日: 2009/01/30
    公開日: 2009/02/09
    ジャーナル フリー
    To evaluate the effects of natto fermented by Bacillus subtilis MC1 on defecation, fecal properties and fecal microflora, a crossover study was conducted in 44 healthy volunteers (female, 34.9±8.8 years old; mean±SD). The subjects were divided into two groups and given 40g natto (B.subtilis MC1 spores 2×1010cfu) and boiled soybeans (40g/day) for 14 days each. No effect of natto was found on the frequency of defecation, the volume of feces or fecal characteristics. The number of Bacillus bacteria was significantly increased after the natto administration period in comparison with the boiled soybean administration period (p<0.05), indicating that live B.subtilis MC1 spores reached the large intestine. On the other hand, the number of other bacteria showed no change in the natto administration period in comparison with the boiled soybean administration period.
  • Wanna LAOWAGUL, Kunio YOSHIZUMI
    2009 年 53 巻 1 号 p. 19-32
    発行日: 2009/01/30
    公開日: 2009/02/09
    ジャーナル フリー
    A survey on selected nine volatile organic compounds (VOCs), which are 1,3-butadiene, 1,2-dichloroethane, vinyl chloride, dichloromethane, chloroform, 1,2-dichloroethane, trichloroethylene, 1,2-dichloropropane, and tetrachloroethylene, was conducted in Bangkok in the duration of November 2006 to September 2007. The sampling was made using six-liter Silonite™ canisters on the 24 h basis once a month at 11 sites (5 roadside, 5 residential area, and 1 city background). As the methodology for determination of ambient VOCs, canister-preconcentrator-gas chromatography/mass spectrometry (GC/MS) was used. The method of quantization limits (MQL) of most of the compounds were less than one tenth of their AQS (air quality standard) levels. As the result, their ambient behaviors were characterized from the standpoint of concentration variations at three types of sampling sites as well as in the comparison of their AQS levels. Especially, the concentrations of benzene and 1,3-butadiene at roadside sites were observed to be higher than the ones at residential area and city background sites. These two compounds were supposed to be mainly derived from motor vehicles.
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