Online ISSN : 1884-6599
Print ISSN : 0037-2072
ISSN-L : 0037-2072
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  • Yuka SAKAMOTO, Toshiki OKUMA, Masaru OYA
    2020 Volume 61 Issue 1 Pages 38-45
    Published: January 25, 2020
    Released: January 25, 2020

    “Natural Cleaning” which utilizes natural materials like food ingredients for cleaners is spreading over some consumers. But some unscientific parts are seemed to be included in the information. The purpose of this paper is to clarify the tendency of the information about cleaning with beer as one of alcohol beverages and to verify the contents experimentally. In the information, it is said that the cleaning with beer is effective to remove oily soil and the detergency is caused by alcohol, vitamin, enzyme, protein and so on. Experimental results show that the detergency with beer is greater than that with water, but smaller than that with SDS. The most remarkable point is that cleaning effect with beer is equal to or greater than that with Japanese sake or whisky whose alcoholic concentrations are higher than that of beer. It was indicated that the detergency with beer was caused by joint effect of alcohol and protein, and the main popular vitamin theory for the detergency of cleaning with beer was absolutely denied.

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  • Ikuko HIRAI, Yukie TSUJI
    2020 Volume 61 Issue 1 Pages 46-51
    Published: January 25, 2020
    Released: January 25, 2020

    It was reported in the first study that women workers who supported the Japanese textile industry had the education to learn and actively live with goals. In this second study, we will examine whether Japanese female college students currently have the education that female workers in the industrial growth period have, through lifestyle questionnaires such as reasons for going on to school and thinking about future work. As a means, we compared the labor consciousness of foreign students from Vietnam during the period of the development of the industry in current. As a result, current Japanese female college students did not have the willingness to work as seen by Vietnamese students, but it has become apparent that richness of society is greatly related sense of purpose for work. We believe that issues for university staff are how to maintain motivation for labor in this richness of society. In order to solve these issues, it is important to use social networks to make each student aware and confident that they are members of society, and to raise the labor awareness of female college students.

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