• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2009.10a
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• pp.175-176
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• 2009

• The KSFM Journal of Fluid Machinery
• /
• v.11 no.4
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• pp.77-85
• /
• 2008

• Proceedings of the Korean Society of Environment and Ecology Conference
• /
• 2000.04a
• /
• pp.99-102
• /
• 2000

• Proceedings of the Korean Society of Environment and Ecology Conference
• /
• 2004.04a
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• pp.116-120
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• 2004

• Proceedings of the Korea Society of Environmental Biology Conference
• /
• 2005.12a
• /
• pp.137-137
• /
• 2005

• Proceedings of the Zoological Society Korea Conference
• /
• 2000.10a
• /
• pp.107.2-107
• /
• 2000

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 1998.10a
• /
• pp.385-386
• /
• 1998

• Journal of the Korean Institute of Educational Facilities
• /
• v.8 no.5
• /
• pp.47-57
• /
• 2001

• Journal of the Korean Chemical Society
• /
• v.34 no.5
• /
• pp.445-451
• /
• 1990

The catalytic ammoxidation of methylpyrazine into cyanopyrazine over a supported vanadium oxides catalyst on ${\gamma}$-alumina was studied in a continuous-flow fixed bed reactor. Various crystalline phases of vanadium oxides were obtained depending on reduction temperatures. And also the activities for the reaction of methylpyrazine into cyanopyrazine were affected by their major oxidation states of the corresponding crystalline phases. The 10${\%}$ vanadium oxides loaded ${\gamma}$-alumina catalyst, which was reduced at 600$^{\circ}C$ under the hydrogen flow for 2 hours, showed the highest activity and the highest selectivity on cyanopyrazine in the ammoxidation of methylpyrazine.Its major crystalline phase was V$_2$O$_3$ with the presence of V$_6$O$_{13}$ and V$_2$O$_4$(VO$_2$) together. And this coexistance seemed to enhance the activity.

• Korean Journal of Plant Resources
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• v.20 no.1
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• pp.50-62
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• 2007

The flora of Banwol, Donghwa and Samhwa stream of the Sihwaho Phragmites communis wetland park was listed as 242 taxa; 72 families, 175 genera, 201 species, 38 varieties, 2 forms and 1 cultivar. Among these taxa, there were 92 taxa (38.0%) for the planted species, while 150 taxa (62.0%) for the native species. The halophytes were summarized as 13 taxa (5.4% among total 242 taxa); 5 families, 9 genera, 12 species, 1 variety. The naturalized plants were composed of 17 families, 41 genera, 45 species, 1 variety, totaling 46 taxa and naturalization index, urbanization index were 19.0%, 17.0%, respectively.