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FRACTAL DIMENSIONS OF THE DENDRITIC ICE
Fujio SUDA, Hidetsugu MORI, Satoshi INOUE
1995 Volume 7 Issue 1 Pages
1-8
Published: April 15, 1995
Released on J-STAGE: February 25, 2010
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An experimental stuty has been made to investigate the supercooling solidification of aqueous binary solutions. NaCl aqueous solutions of 0.0 to 22.4wt% in concentration were utilized as the testing solutions. Temperature variations have been measured during solidification, and the shape of growing ice has been observed under microscope for three cases of cooling direction (sidewise, bottom and top cooling). Solidification processes could be clarified into several steps: 1) rapid growth of a number of needle-shaped crystal, 2) melting of the top of needles, 3) at the same time, growing of thin and dense dendrides of which front is parallel to the cold plate, 4) coalescence of both fronts, and 5) stationary growing of dendrites. By the use of the box-counting method, it has been confirmed that the stationary growing dendritic ice patterns are fractals with a property of self-similarity, and their value of fractal dimension D has been obtained as 1.77 for sidewise growth dendrites, which was almost independent of the concentration c. In contrast to this case, smaller values of D were given in the case of upward growth and decreased with increasing c. These difference of D between the sidewise and the upward growth was attributable to the natural convection due to the gravity.
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Tadahisa SHIONO, Masahiro SHIBAGAKI
1995 Volume 7 Issue 1 Pages
9-11
Published: April 15, 1995
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Quartz cristal units have been used widely for time and frequency contorol applications in many electoronics devices. A frequency of quartz cristal unit is adjusted by depositing a metal (silver or gold), measuring its frequency change in the proccess. For the demand of high-frequency band use and high accuracy of products recently, it has become necessary to measure frequencies by the transmission method with controlling the deposition rate in the frequency adjuster equipment. However, 4ppm frequency decrease of the cristal unit has occurred within 15 minutes after adjusting the frequency in the adjuster that vacuum had been performed by oil diffusion pumps. We found this frequency shift was the result from adsorption by oil moleculars on the fresh depositing surface, not from thermal radiation out of the evaporation source.
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Kazuhiko TANBO, Masanori SUGA, Atsumi KINOSHITA
1995 Volume 7 Issue 1 Pages
12-14
Published: April 15, 1995
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Pyrrole monomer substituted in the 3- and 4-positions by cyano and methyl groups (3-Cyano-4-methylpyrrole) was synthesized and it was polymerized by chemical oxidation method, using FeCl
3 as oxidizing agents. The obtained polymer was soluble in general organic solvent, but had very low conductivity. We also report a method of preparing conducting copolymers of 3-Cyano-4-Methylpyrrole and pyrrole.
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Yasunobu Koga, Tohru Tomiyama, Kazuaki Kobayasi, Shouji Arano, Yasuhik ...
1995 Volume 7 Issue 1 Pages
15-18
Published: April 15, 1995
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An adhesive agent to use with silicone rubber andacrylic resin was developed. The monomer with a -SiH group which reacts with addition type silicone rubber was synthesized and was copolymerized with MMA. The copolymer solution in toluene as used as an adhesive. Copolymer with different ration of γ-methacryloxy propyl tris (dimethyl siloxy) silane (γ-MPTDMS) and MMA were prepared and the toluene or the other solution of the copolymer was used as an adhesive.
The copolymer with a ratio of γ-MPTDMS:MMA=1:9 provided good adhesion between silicone rubber and acrylic resin. The nitromethane solution of γ-MPTDMS/MMA copolymer provided higher bond strength than the other solutions for adhesion between silicone rubber and acrylic resin.
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Shingo TACHIBANA, Takashi KAWANABE, Kazuki KINOSHITA, Hirohisa UCHIDA, ...
1995 Volume 7 Issue 1 Pages
19-20
Published: April 15, 1995
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Mitsuhiro WADA, Akiko ICHIKAWA, Hirohisa UCHIDA, Haru-Hisa UCHIDA, Yos ...
1995 Volume 7 Issue 1 Pages
21-22
Published: April 15, 1995
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Kiyoshi Morii, Kazuteru Tashiro, Yoshihito Matsumura, Hirohisa Uchida
1995 Volume 7 Issue 1 Pages
23
Published: April 15, 1995
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Yasurou Matsuo, Kenji Koizumi, Tsunenori Suzuki
1995 Volume 7 Issue 1 Pages
24
Published: April 15, 1995
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Tetsuo AIDA, Yoshitake NISHI
1995 Volume 7 Issue 1 Pages
25-26
Published: April 15, 1995
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Masashi Kawakami, Shusuke Yomo, H. H. Feng, J. W. Chu, P. H. Hor, C. W ...
1995 Volume 7 Issue 1 Pages
27
Published: April 15, 1995
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Katsuhiro Fujita, Yuji Ohmori, Kei Fukushima, Kai Shiraishi, Mamoru Sh ...
1995 Volume 7 Issue 1 Pages
28-29
Published: April 15, 1995
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Shuhei Miki, Shigehiro Fujino, Kenichi Aoki, Shinichi Ichimura, Kazuya ...
1995 Volume 7 Issue 1 Pages
30-31
Published: April 15, 1995
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Takashi Kitamura, Yuji Ohmori, Kei Fukushima, Kai Shiraishi, Mamoru Sh ...
1995 Volume 7 Issue 1 Pages
32-33
Published: April 15, 1995
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Akitsugu Ono, Kaoru Usui, Nobutake Hirai, Yuichi Kawaguchi, Hiroko Yam ...
1995 Volume 7 Issue 1 Pages
34-35
Published: April 15, 1995
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Nobuhiro Iwataka, Yuji Ohmori, Kei Fukushima, Kai Shiraishi, Mamoru Sh ...
1995 Volume 7 Issue 1 Pages
36-37
Published: April 15, 1995
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Takashi Uemura, Yuji Ohmori, Kei Fukushima, Kai Shiraishi, Mamoru Shim ...
1995 Volume 7 Issue 1 Pages
38-39
Published: April 15, 1995
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Toshihisa Sato, Hideshi Yokota
1995 Volume 7 Issue 1 Pages
40
Published: April 15, 1995
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Hiroshi OBI, Hiromichi MOTEGI, Shuichi KAWABATA, Hideshi YOKOTA
1995 Volume 7 Issue 1 Pages
41
Published: April 15, 1995
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Kazuya Ota, Makoto Kobayasi, Kenichiro Nakamura, Hideshi Yokota
1995 Volume 7 Issue 1 Pages
42
Published: April 15, 1995
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Akifumi KOBAYASHI, Hideshi YOKOTA, Tomoo FUJIOKA
1995 Volume 7 Issue 1 Pages
43
Published: April 15, 1995
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Tomohiko KIMURA, Masayuki YAMAZAKI
1995 Volume 7 Issue 1 Pages
44
Published: April 15, 1995
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Tomohide Iwawaki, Masayuki Yamazaki
1995 Volume 7 Issue 1 Pages
45-46
Published: April 15, 1995
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Teruo YAJIMA, Tomohiro MIYATA, Akihiro MATSUBARA, Kazutaka KAWAMURA, K ...
1995 Volume 7 Issue 1 Pages
47
Published: April 15, 1995
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Masahiko Takatori, Masakuni Matsumoto, Akira Tonegawa, Kazutaka Kawamu ...
1995 Volume 7 Issue 1 Pages
48-49
Published: April 15, 1995
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Manabu Homma, Takeshi Yoshida, Manabu Yamada, Tomoaki Yokoh, Kenzo Nan ...
1995 Volume 7 Issue 1 Pages
50
Published: April 15, 1995
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Masaharu Hoshino, Hiroshi Shimada
1995 Volume 7 Issue 1 Pages
51
Published: April 15, 1995
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Kunihiro Komori, Masanobu Namita, Tsunenori Suzuki
1995 Volume 7 Issue 1 Pages
52
Published: April 15, 1995
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Tohru Mizushima, Satoshi Suzuki, Takuya Kato, Noritaka Shikase, Hirona ...
1995 Volume 7 Issue 1 Pages
53
Published: April 15, 1995
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Atsushi Ogasawara, Itaru Sato, Masahiro Takahashi, Yasushi Kishi, Tosh ...
1995 Volume 7 Issue 1 Pages
54
Published: April 15, 1995
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Masaki Sawada, Moriaki Wakaki
1995 Volume 7 Issue 1 Pages
55-56
Published: April 15, 1995
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Masaki Sawada, Moriaki Wakaki, Hiroshi Yoshida
1995 Volume 7 Issue 1 Pages
57-58
Published: April 15, 1995
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Shin-ichi Arai, Masayoshi Tada, Mikio Nishihata, Hironori Takahashi
1995 Volume 7 Issue 1 Pages
59
Published: April 15, 1995
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Keiichi Naitoh, Masayoshi Tada, Mikio Nishihata, Eiichi Sakita
1995 Volume 7 Issue 1 Pages
60
Published: April 15, 1995
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Tatsuya Fujiwara, Kuniyasu Gemma, Mamoru Kawakami
1995 Volume 7 Issue 1 Pages
61
Published: April 15, 1995
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Kenji Kitajima, Kuniyasu Gemma, Mamoru Kawakami
1995 Volume 7 Issue 1 Pages
62
Published: April 15, 1995
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Keisuke Kageyama, Kaoru Hayashi, Yoshihiro Matsuo, Kuniyasu Gemma, Mam ...
1995 Volume 7 Issue 1 Pages
63
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Takao Ohtsuka, Kuniyasu Gemma, Mamoru Kawakami
1995 Volume 7 Issue 1 Pages
64
Published: April 15, 1995
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Tadashi Sakuma, Toshiyuki Aoki, Kuniyasu Gemma, Kaoru Yoshida, Mamoru ...
1995 Volume 7 Issue 1 Pages
65
Published: April 15, 1995
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Hiroyuki Izumi, Kaoru Usui, Nobutake Hirai, Yuichi Kawaguchi, Hiroko Y ...
1995 Volume 7 Issue 1 Pages
66-67
Published: April 15, 1995
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Ken Kagawa, Kuninori Tokuda, Haru Hisa Uchida
1995 Volume 7 Issue 1 Pages
68-69
Published: April 15, 1995
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