• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2006.11a
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• pp.35-37
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• 2006

• Proceedings of the Korean Fiber Society Conference
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• 1992.06b
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• pp.74-74
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• 1992

• Proceedings of the Korean Fiber Society Conference
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• 2001.04b
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• pp.91-94
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• 2001

• Proceedings of the Korean Fiber Society Conference
• /
• 2001.04b
• /
• pp.111-114
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• 2001

• Proceedings of the Korean Fiber Society Conference
• /
• 2001.04a
• /
• pp.43-46
• /
• 2001

• Proceedings of the Korean Fiber Society Conference
• /
• 1993.06b
• /
• pp.202-207
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• 1993

• Proceedings of the Korean Fiber Society Conference
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• 2000.04a
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• pp.133-136
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• 2000

• Proceedings of the Korean Fiber Society Conference
• /
• 1990.06b
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• pp.20-20
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• 1990

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.35 no.4
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• pp.17-22
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• 2003

A kind of image analysis system is used to investigate the structural features of the papers made from Indian mallow. The screen mark on the paper was identified and analyzed. The dusts, shives and fiber bundles were manifested and calculated. In the aspect of Indian mallow hanji's surface characteristics analyzed by an Image analyzer, the average of gray level and its standard deviation hanji from the woody core were rather lower than of bast fiber pulp because of better sheet formation of the formers. Hower. high brightness hanji showed high value of gray level. The sheet formation and paper opacity were increased with the decrease of standard deviation of gray level. From these results, gray level measurement could be used to predict the paper opacity as well as sheet formation.

• Bulletin of the Korean Chemical Society
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• v.32 no.7
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• pp.2351-2357
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• 2011

Three new metal-organic copper(II) complexes, $[Cu(H_2PZTC)_2]_n{\cdot}2nH_2O$ (1), $[Cu(HPZTC){\cdot}2H_2O]_n{\cdot}2nH_2O$ (2), and $Cu_2[(PZHD)(OH)(H_2O)_2]_n$ (3) ($H_3PZTC$ = pyrazine-2,3,5-tricarboxylic acid, $PZHD^{3-}$ = 2-hydroxypyrazine-3,5-dicarboxylate), have been synthesized from $Cu(II)/H_3PZTC$ system under different synthetic conditions, and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy and thermogravimetric analysis. In complexes 1 and 2, $H_3PZTC$ ligands loose one and two protons, which were transformed into $H_2PZTC^-$ anion and $HPZTC^{2-}$ dianion under different preparation condition, respectively. Furthermore, two ligands coordinate with Cu(II) cations in different modes, leading to the formation of the different chain structures. In complex 3, $H_3PZTC$ ligand was converted into a new ligand-PZHD by in situ decarboxylation and hydroxylation under a higher pH value than that for complexes 1 and 2. PZHD ligands link the Cu(II) cations to form a 2D layer structure. These results demonstrate that the preparation conditions, including pH value and reaction temperature etc, play an important role in the construction of complexes based on $H_3PZTC$ ligand.