巻号一覧
前身誌
41 巻, 12 号
選択された号の論文の9件中1～9を表示しています
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トロント大学教授Goring博士とベロイト社副社長Torza博士にきく会誌編集委員会1987 年 41 巻 12 号 p. 1171-1182
発行日: 1987/12/01
公開日: 2010/10/27
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石黒 久三郎1987 年 41 巻 12 号 p. 1183-1188
発行日: 1987/12/01
公開日: 2010/10/27
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北村 迪夫1987 年 41 巻 12 号 p. 1189-1195
発行日: 1987/12/01
公開日: 2010/10/27
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鮫島 正浩1987 年 41 巻 12 号 p. 1196-1203
発行日: 1987/12/01
公開日: 2010/10/27
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木材科学委員会1987 年 41 巻 12 号 p. 1204-1210
発行日: 1987/12/01
公開日: 2010/10/27
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1987 年 41 巻 12 号 p. 1211-1212
発行日: 1987/12/01
公開日: 2010/10/27
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可視光による地合むらと視覚特性湯原 隆, 蓮池 牧雄, 村上 浩二1987 年 41 巻 12 号 p. 1213-1220
発行日: 1987/12/01
公開日: 2010/10/27
ジャーナル フリーThe relationship between the visual evaluation of formation and the textural features of light transmitted images of sample sheets is discussed using 5 kinds of newsprint papers.
The two rank correlation coefficients associated with the relationship between the visual evaluation of floc and the textural feature fe from the co-occurrence matrices were determined te be 1.0 (The matrices were calculated with images which were digitized with 1600μm and 3200μm detection spots).
The four rank correlation coefficients associated with the relationship between the visual evaluation of wire mark and the textural features fi and fi′ from the wevelength spectrum were determined to be 0.90 (The value of fi was extrected from the wavelength range 200-3000μm, and the values of fi′ were extracted from the wavelength ranges 200-2000μm, 200-3000μm, 200-4000um).
Thus, there is strong evidence that these two image analysis technique (i. e. the co-occurrence matrix and the wavelength spectra) may be correlated with the visual evaluation of floc and wire mark, respectively.抄録全体を表示PDF形式でダウンロード (1640K) -
第4報白液中不純物の性状塚本 治夫, 藤岡 泰三, 奈倉 道博1987 年 41 巻 12 号 p. 1221-1228
発行日: 1987/12/01
公開日: 2010/10/27
ジャーナル フリーProperties of white liquor in Direct Causticizing process by ferric oxide and behavior of inorganic impurities which were leached from iron ore and accumulated in white liquor were investigated.
Iron ore was reused 20 times in Direct Causticizing reaction and residual inorganic impurities were measured. About 66% of Al2O3 and only 5% of SiO2 is leached at the first cycle. NaCl, Na2SO4, KCl and K2CO3 has very little influence on Direct Causticizing reaction between Fe2O3 and Na2CO3.抄録全体を表示PDF形式でダウンロード (1150K) -
第1報各湿紙水分における収縮応力と弾性係数の測定飯田 清昭1987 年 41 巻 12 号 p. 1229-1234
発行日: 1987/12/01
公開日: 2010/10/27
ジャーナル フリーWhen a wet web dries up in a paper machine dryer section, it shrinks depending on drying conditions. When the shrinkage during drying is larger, the dried web has a tendency to make a more elongation and be less stable when subjected to humid conditions.
The auther has demonstrated in the series of previous papers that there will be a farirly large moisture variation in the cross direction during drying, even when its final moisture profile is rather uniform. This result will suggest that the moisture variation profile in a cross direction during drying, may end up in the variation of shrinkage in a cross direction of the dried web, which may cause an uneven behavior in a cross direction under humid conditions.
In order to investgate this hypothesis, the finite element method will be a good tool. This method, however, requres two physical properties, elastic modulus and stress, which in this case is force generated by drying. Moreover, these two properties vary as a wet web becomes dry.
So, in the Part I of the series, these two properties are measured as functions of a web moisture, using a multi-purpose tensile tester with a procedur edeveloped for this measurement.
W: moisture content g·water/g·fiber
F: drying force kg/(0.1g·water/g·fiber)·mm2E: elastic modulus kg/mm2F=4×10 (-4.43×W) (W≥0.07)
F=0.5×10(9.2×W) (W≤0.07)
E=11×W-0.740
These data are obtained under the small stress of 0.03kg/15mm.
In the coming report, the web shrinkage variation profile in a cross direction will be discussed by the finite element method using above data.抄録全体を表示PDF形式でダウンロード (809K)
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