• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2001.11a
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• pp.133-133
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• 2001

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2001.11a
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• pp.130-130
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• 2001

• Carbon letters
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• v.26
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• pp.95-101
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• 2018

• Proceedings of the KSME Conference
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• 2004.11a
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• pp.1436-1441
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• 2004

Achieving the maximum blasting efficiency with minimum abrasive consumption is a critical concern in surface preparation stage of shipbuilding and offshore industry. Increasing the abrasive flow rate beyond the optimum point results in a major reduction in productivity even though the amount of abrasive used is larger. So, this study is intend to find out the optimum abrasive-to-air mixing ratio which can make a significant improvement in blasting efficiency and remarkably reduce the amount of abrasive used. From the test results, it can be identified that as the abrasive feeding rate is increased linearly, blasting efficiency is increased to a maximum point and then gradually decreased in the form of a bell-shaped.

• Proceedings of the KSME Conference
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• 2004.11a
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• pp.1442-1447
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• 2004

A significant amount of labor hour is being spent for clean up spent abrasives after blasting. So, for improving the efficiency of abrasive(grit) recovery process which acts as the neck of a battle in preceding coating stage, it was established the theoretical background for pneumatic transport technology in the abrasive recovery system as well as experimentally evaluated the effect of design parameters such as flow pattern, saltation velocity and pressure drop on the efficiency of the abrasive recovery system. And, by optimizing the operating parameter such as the length and diameter of suction hose, specification of recovery device, recovery mouth and hose connection method, a method which can dramatical1y increase the efficiency of abrasive recovery system, is derived.

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2001.04a
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• pp.52-52
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• 2001

No Abstract. See Full-text

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2001.04a
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• pp.63-63
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• 2001

No Abstract. See Full-text

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2001.10a
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• pp.70-70
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• 2001

no Abstract, See Full Text

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2001.10a
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• pp.65-65
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• 2001

no Abstract, See Full Text

• Carbon letters
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• v.12 no.2
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• pp.102-106
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• 2011

Carbon nanotubes (CNTs) have been synthesized by ferrocene-catalyzed pyrolysis of toluene. The influences of the experimental conditions on the morphology and microstructure of the product have been analyzed. To find the proper temperature for synthesis of CNTs, the experiment was performed in a temperature range from 800 to $1100^{\circ}C$. From content variation of ferrocene and thiophene as the catalyst, morphological change of carbon nanotubes has been observed. Also, the influence of the gas ratio of hydrogen and argon on the nanotube samples was analyzed by scanning electron microscopy and transmission electron microscopy.