JOURNAL of the JAPAN RESEARCH ASSOCIATION for TEXTILE END-USES
Online ISSN : 1884-6599
Print ISSN : 0037-2072
ISSN-L : 0037-2072
Volume 40, Issue 11
Displaying 1-7 of 7 articles from this issue
  • [in Japanese]
    1999Volume 40Issue 11 Pages 692-697
    Published: November 25, 1999
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1999Volume 40Issue 11 Pages 698-702
    Published: November 25, 1999
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1999Volume 40Issue 11 Pages 703-708
    Published: November 25, 1999
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
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  • [in Japanese]
    1999Volume 40Issue 11 Pages 709-715
    Published: November 25, 1999
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
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  • Part 2 : Relation Between Information Activity and Whole Daily Activity
    Tomoko Yoshioka, Ken Kazama
    1999Volume 40Issue 11 Pages 725-730
    Published: November 25, 1999
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
    In Part 1, we classified female students into nine clusters by time consumption on the whole items of daily activities. In this paper, we classified the same subjects as those discussed in Part 1 into some clusters by information activities. And the relation between these clusters and the clusters by Part 1 was analyzed. Main results are as follows:
    1. Using seven information activities, we classified the subjects into ten clusters.
    2. The relation between these clusters and nine clusters by Part 1 was found. Namely, much time consumption of work in the whole activities reduced the time consumption of conversation in the information activities and consumption of much relaxed time in the whole activities increased the time consumption of conversation in the information activities.
    3. The ratio of time of “concentrated” conversation (wtihout other activities) to the total time of conversation was merely twelve percent. And another time of conversation was spent for “parallel” conversation (with other activities) . The lelation between the parallel conversation and the whole activities was obtained.
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  • Part 6: Soil Removal and Fraying of Cloth in Relation to Energy Input Evaluated by Electricity Consumption in a Household Drum-type Washer Compared with that in a New Flow-type Washer
    Harumi Shiraiwa
    1999Volume 40Issue 11 Pages 731-737
    Published: November 25, 1999
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
    The purpose of this study is to clarify the performance of a household drum-type washer in comparison with that of a new flow type washer. The relation between mechanical energy input evaluated by electricity consumption and soil removal and that between mechanical energy input and fraying of cloth were investigated using the amount of detergents recommended for pulsator-type washers by manufacturers in both washers. The summary is as follows:
    In the drum-type washer, effects of bath level and foam in the wash liquor on the mechanical energy input to the cloth are different from those in the new flow-type washer. A low bath level causes a large mechanical effect on the cloth. Foam in the wash liquor depresses the mechanical energy imparted to the cloth by falling into the wash liquor. For any given energy input, detergency or fraying of cloth in low-forming bath is higher or larger than that in higher-foaming bath.
    A correlation is observed between detergency and logarithm of fraying of cloth, irrespective of foaming property of the wash liquor, bath level, bath ratio or washing time, and it fits in well with a correlation obtained in the new flow-type washer. It seems to suggest that these two types of washer have the same mechanism of detergency, that is, detergency caused by small-scale inter-fiber fluid motion.
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  • Shigeaki Nagai, Noriko Suda, Katsuhiko Inagaki
    1999Volume 40Issue 11 Pages 738-743
    Published: November 25, 1999
    Released on J-STAGE: September 30, 2010
    JOURNAL FREE ACCESS
    A similarity rule of the draped figures for sheets was investigated by using a model of the F.R. L.drape test. We assumed that the relation between own-weight and the resistant forces could be expressed by the following equation:
    Pw=P1+P2+P3
    where,
    Pw : own-weight of the sheet,
    P1 : resistant force against the bending,
    P2 : resistant force against the compression,
    P3: other resistant forces.
    In this paper, we devised a joint model as both P1and P2among the above three forces acted at the same time on the draped sheets, and the similarity rules of the draped figures for sheets were examined by using the joint model. Results obtained were as follows:
    1) It was shown quantitatively that the major mechanical component forming the draped figures for sheets was the bending length, i.e., Peirce'scof the F.R.L. drape test.
    2) A similarity condition for draped figures was obtained on the joint models constructed from different sheets, and a boundary condition for the equal deformation rate was obtained on the deformation caused by the P3.
    3) A possibility was shown that the components of the P3could be analyzed from this mode.
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