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SEPARATION OF MICROCYSTIS SP. BY POLYSILICATOIRON COAGULANT
橋本克絃,HASEGAWA, Takao,WANG, Jianzhong,KUROKAWA, Mayumi,WATANABE, Yoshimasa 嶺南大學校 環境問題硏究所 1997 環境硏究 Vol.17 No.1
ABSTRACTRecently attention has been paid to algae which are very difficult to remove and often interfere with conventional drinking water treatment units such as coagulation, sedimentation and filtration. In this paper polysilicatio-iron coagulant, a new inorganic polymer coagulant developed by the authors, was employed. It's coagulation characteristics were investigated by jar test as for algae such as blue-green alga Microcystis sp. and diatom Stephanodiscus sp. contained in impounded waters of estuary dam. The coagulation effect of polysilicatio-iron was also compared with that of conventional aluminum coagulants. Results indicated that polysilicatio-iron coagulant was very effective in coagulation and separation of Microcystis sp. and Stephanodiscus sp. in comparison with the conventional aluminum coagulants.
Comparison of South Korean and Japanese Sensibility about Beauty of HIRAGANA
PARK Oh-Soon,NONAKA Takaka,NISHIWAKIA Tsuyoshi,MAEKAWA Zen-ichiro,MORIMOTO Kazunari,KUROKAWA Takao Korean Society for Emotion and Sensibility 2005 감성과학 Vol.8 No.1
Because hand-written characters, especially drawn by a brush can give readers various impressions, they are not only a communication method but also art works. Authors have already investigated the relationship between brush motion analytical results and sensory testing results obtained from Japanese hiragana and reported quantitative evaluation method for the beauty of hiragana, In this paper, sensory tests for South Koreans who cannot recognize the word are carried out, compared with sensory testing results of Japanese. The evaluation objects are 6 hiragana drawn by 4 beginners and 2 experts, Semantic Differential Method based on 30 paired evaluation words are used in the sensory tests. Therefore South Koreans also feel the beauty in hiragana drawn by experts, as compared with by beginners. On the other hand it was confirmed that South Koreans couldnt recognize the difference among beginners. Judging from the factor analysis results, both Japanese and South Koreans selected stability as the 1st factor, there is interesting difference in the following orders.
Analysis of Japanese Women's Abdominal Shapes Using the Three Dimensional Human Body Model
최동은,나카무라 켄스케,쿠로가와 타카오,Choi, Dong-Eun,Nakamura, Kensuke,Kurokawa, Takao The Korean Fiber Society 2011 한국섬유공학회지 Vol.48 No.1
Female body parts, such as breasts, the abdomen, and hips, have three-dimensional shapes that are important for both the ergonomics and beauty of clothing design. The purpose of this study is the three-dimensional analysis and classification of women's abdomens using a geometric model of a three-dimensional human body. The geometric model used in this study is a method of modeling the body surface data acquired by three-dimensional measurements. It describes the shape of the body surface by means of control points on a cylindrical bi-cubic B-spline surface normalized using reference points on the body surface. The three-dimensional body shape measurement data were derived from 556 Japanese females aged 19 to 63. After finding the control points that determine the abdominal shape by applying the measurement data of each three-dimensional human body to the developed geometric model, 99 three-dimensional coordinates of the abdominal shape control points, comprising $99{\times}3$ (x, y, z coordinates)=297 coordinates, were obtained. The method used for analysis was the principal components method based on the variance-covariance matrix. The cumulative contribution rate from the first principal component to the fourth principal component was 82%, indicating that abdominal shapes can be described accurately by these four components. The I st component describes the abdominal protrusion and waist thickness. The 2nd component describes the longitudinal length and crosswise radius of the abdomen. The 3rd component indicates the degree of slimming and skin fold droop. The 4th component describes the lower abdomen droop level and the upper abdomen swelling level.