• Korean Journal of Food Science and Technology
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• v.31 no.3
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• pp.864-869
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• 1999

Synergistic effects of the falcarindiol mixed with monoglyceride in broth exhibited strong growth inhibition on all test strains. It was confirmed that the falcarindiol mixed with monoglyceride exhibited bactericidal effect in broth against L. monocytogenes ATCC 19111 and ATCC 19114 at the same level.

• JOURNAL OF ELECTRICAL WORLD
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• no.10 s.34
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• pp.23-28
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• 1979

만약 가솔린가격이 전력요금보다 급격히 상승할 경우 전기자동차가 비용 효과비율면에서 및 가격면에서 보다 유리해지며, 전기자동차의 에너지절약효과, 오염감소효과 등 사회적효과를 고려하면 전기자동차가 선호될 것이며 또한 선호되어야 한다는 실증적, 당위적 결론에 도달하고 있다.

• Journal of Labour Economics
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• v.31 no.2
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• pp.103-128
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• 2008

This paper estimates the union effect on the wages using Korean Labor and Income Panel Study by using fixed-effect estimation. While the cross-sectional estimates show the size of 4.6% increase in the wages of workers in the union compared 10 the observationally identical workers in the non-union jobs, the union wage effect is estimated as 2.1% increase in the panel study. This shows that there exits an substantial upward-bias in the cross-sectional estimation of union wage effect.

• Korean journal of food and cookery science
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• v.10 no.1
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• pp.57-62
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• 1994

Soybean oil and lard containing different level (0.02, 0.1, 1%) of methionine, lysine and some antioxi-dants (TBHQ, a-tocopherol) were stored at 60$^{\circ}C$ and heated at 180$^{\circ}C$ to compare their antioxidative effects. Peroxide values (POV) and acid values (AV) of each oil were monitored. Methionine and Iysine showed antioxidative effects in all concentration and the higher concentration, the higher effect. In case of incubating antioxidative effect of methionine was similer to that of TBHQ and that of lysine was considerably higher than that of a-tocopherol, but was lower than that of methionine. In case of heating the antioxidative effects of methionine and lysine were showed higher than those of THHQ and u-tocopherol. Methionine and lysine also had higher antioxidative effects in animal fat than in vegetable oil. Synergistic effects among methionine, Lysine and some food antioxidants were shown to be available in all substrates and the best effect was shown in substrate added com-pound of methionine and a-tocopherol.

• Journal of Labour Economics
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• v.23 no.2
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• pp.127-151
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• 2000

The empirical study that used the logit model and the Heckman's selection bias model based upon 'Korea Labor & Income Panel Study' shows that the experience of job training has a positive effect on the probability of employment, as well as on the wage increase. The analysis also sheds light on the effect on employment with wage workers who experienced job training. When the discouraged unemployed are not classified as labor force participants, that is the unemployed, and the industrial dummy variables are excluded, logit estimation shows that training program in the public sector, not in the private sector, significantly increases their employment probability. However when these same workers are classified as the unemployed and the industrial dummies are included, logit estimation shows that public and private training programs has no effect on their employability.

• Food Science of Animal Resources
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• v.24 no.4
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• pp.405-410
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• 2004

This study was performed to investigate the antioxidative activity of soybean products extracts using 1, 1-diphenyl-2-picrylhydrazyl (DPPH) and thiobarbituric acid (TBA) method for application of animal products. All three extracts (natto, soybean paste, soybean milk extract) were found to have an ability to donate hydrogen to DPPH. Especially, natto and soybean paste extract were more effective than that of soybean milk on the antioxidative activities. Natto and soybean paste extract were stronger than butylhydroxy toluene (BHT), butyl hydroxyl anisole (BHA) (5${\times}$10$^{-4}$ M) and ascorbic acid (5.7${\times}$10$^{-3}$ M) previously well known as antioxidants. These extracts also showed a synergistic effect. TBA values of natto (45.8％) and soybean paste extract (45.2％) were stronger than that of soybean milk extract (33.6％). These results suggest that soybean product extracts have antioxidative activities and synergistic effects.

• Environmental and Resource Economics Review
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• v.14 no.3
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• pp.729-751
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• 2005

RPS(Renewable Portfolio Standards) is an institutional device to promote use of renewable energy through market mechanism by making renewable energy to constitute a pre-announced portion of the electricity production. We measure economic impacts of the introduction of RPS to domestic electricity market at the levels of electricity market, individual industrial sectors and the economy as a whole. First, we examine the TREC(Tradable Renewable Energy Credits) market, where the credits in excess of the obligation of the renewable energy production are sold to those who have to meet the obligation through purchased credits. We then measure end-users' additional cost originating from the introduction of RPS and TREC in electricity production, and their impacts on price and supply in the retail electricity market. Next, using input-output analysis, we measure economic impacts of the changes in retail price and supply on individual industrial sectors and the economy as a whole. Among many others, we find small price effect and large GDP effect - sectoral electricity price rises at around 5%, sectoral price level rises by 0.258%, and sectoral GDP declines by 1.940% on average by the year 2011.

• Korean Journal of Food Science and Technology
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• v.36 no.2
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• pp.329-332
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• 2004

Changes in activities of alcohol dehydrogenase (ADH) and acetaldehyde dehydrogenase (ALDH) in vitro were examined by measuring maximum absorbances of ADH and ALDH at 340 nm to determine influence of Maesil (Prunus mume) on alcohol metabolism. Facilitating rates of ADH activity were 137.92, 131.58, 152,96, 218.70, 111.76, and 144.27% in Maesil juice, 5, 10, and 15% GMT, and 0.5 and 1.0% aspartic acid, respectively, ALDH activity increased in the order of Maesil juice > ALDH > GMT > aspartic acid, and facilitating rate of ALDH activity in Maesil juice was the highest at 976.44%. These results indicate alcohol metabolizing activity can be enhanced by Maesil juice.

• Journal of Labour Economics
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• v.15
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• pp.157-169
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• 1992

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.10 no.1 s.88
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• pp.55-61
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• 1989

PE멀칭(피복) 재배시에 제초제를 사용하면 약제효과와 피복효과의 상승작용으로 잡초방제력이 월등히 높아진다. 주의할 것은, 파종상의 땅고르기와 흙부수기에 신경을 써야 제대로 효과를 얻을 수 있다.