• Explosives and Blasting
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• v.14 no.1
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• pp.14-21
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• 1996

• 지반과기술
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• v.10 no.2
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• pp.13-20
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• 2013

• 지반과기술
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• v.4 no.4
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• pp.50-58
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• 2007

• 지반과기술
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• v.4 no.1
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• pp.6-32
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• 2007

• Herbal Formula Science
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• v.10 no.2
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• pp.199-211
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• 2002

Acquired pigmentary skin diseases such as abnormal melanogenesis, vitiligo, chloasma and inflammatory pigmentation are related to regulate the melanin production. The aim of this study was to investigate the effect of Codonopsis lanceolata on the melanogenesis of HM3KO human melanoma cells biologically. The cells were treated for 5 days with Codonopsis lanceolata at several concentrations. Treatment with Codonopsis lanceolata suppressed melanin contents as a dose dependent manner without cytotoxicity and morphological change. And the extract of Codonopsis lanceolata also inhibited tyrosinase, a key enzyme forming melanin, in a dose-dependent manner. And it did not affect the DOPAchrome tautomerase(TRP-2) activity. These results suggest that Codonopsis lanceolata is a candidate for an efficient whitening agent which supresses melanogenesis by a Raper-Mason pathway.

• Culinary science and hospitality research
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• v.13 no.3
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• pp.308-316
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• 2007

This study is an exploratory research whose purpose is to determine the possibility for a cook to firmly establish his/her position as a profession in the society. In that respect, it analyzed how much a cook as a profession was professionalized by investigating whether professional education institutions, official license systems, professional associations and ethics code existed or not in relation to the profession. The results of the study showed that in Korea, the cook as a profession was being supported by such institutions, license systems, associations and ethics code as mentioned above. This indicates that in this nation, cooks already have been moderately professionalized.

• 지반과기술
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• v.3 no.1
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• pp.57-66
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• 2006

• 지반과기술
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• v.8 no.3
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• pp.4-12
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• 2011

• Journal of the Korean Professional Engineers Association
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• v.42 no.1
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• pp.44-48
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• 2009

About past 30 years, we don't have enough consideration and investigation about DB-Load. While 30 years, weight of truck is heavier and condition of roads differ, so many conditions of roads and vehicles are changed. We must consider change of many conditions and we must improve laws about maintenance of DB-Load. and now we must consider that low grade as well as high grade bridge can cross heavy vehicle and harmony between changed size of vehicle and bridge while making laws and code. So we can apply to improve design properly.

• Journal of the Korean Professional Engineers Association
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• v.15 no.2
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• pp.43-44
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• 1982

What I would like to expect about this mater is that Korea would develop unique techniques of the waste water which are most suitable to social and other relevant conditions of that country, not entirely following models of sewerage construction of U.S.A. or European countries or Japan. Some cements will be made in the followings: (1) The investigation for the diffusion of seperated simple public sewerag, not the large scale sewerage treatment plant. (2) The plan for non-mixed treatment of lining waste water and industrial waste water. (3) Suggestion for "a man of ability" at the university education to cultivate a technologist of facilities and the elemental watchman at the sewerage maintenance.