• Environmental engineer
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• v.18 s.194
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• pp.52-56
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• 2002

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2002.05a
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• pp.97-98
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• 2002

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 1974.06a
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• pp.125.5-125
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• 1974

• 대한위암학회:학술대회논문집
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• 2005.10a
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• pp.29-29
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• 2005

• Journal of the Society of Cosmetic Scientists of Korea
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• v.29 no.1
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• pp.17-25
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• 2003

• Journal of Science Education
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• v.46 no.1
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• pp.30-39
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• 2022

The purpose of this study is to compare and analyze secondary school student's brain activity on assimilation, conflict, and accommodation processes of self-regulation. The self-regulation task was presented a biological phylogenetic task, and the brain activity was measured and analyzed with fNIRS. As a result, a significant activation was found in the left DLPFC, OFC, and FP regions in the conflict process compared to the assimilation process, and a significant activation was found in DLPFC and VLPFC in the accommodation process. As the age increase, the DLPFC also increases in the conflict process and VLPFC increases in the assimilation process. In addition, comparing conflict and accommodation process, the 7th grade students show a significant brain activity in the right VLPFC, the 9th grade students show significant brain activity in the left FP and DLPFC areas in the accommodation process. However, the 11th grade students did not show any significant brain activity at this process. These results presumably show that the neurological research method could be applied to educational research in cognitive activity and classroom instructional situation.

• The Microorganisms and Industry
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• v.10 no.1
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• pp.17-29
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• 1978

본논에서는 그 많은 미생물의 공업적 이용에서 산업폐수 처리법의 일부분을 발췌해서 논해 볼까 한다. 즉, 생물학적 폐수처리법 중에서 활성오니법을 미생물의 먹이 과정을 더듬어서 살펴보는 정도로 논하자는 것이다. 물론, 활성오니 그자체 만 논하더라도 본지면으로는 감당할 수 없을 정도로 깊고 방대한 내용이 될 것이다. 그러나 우리나라에서는 아직도 수처리 분야에 종사하는 소수의 기술자를 제외한 대부분의 현장처들이 활성오니처리법에 대해서는 생소하기 때문에 본론에서 간력하나마 개론적으로 다듬어서 수처리에 관심 있는 분들에게 활성오니를 소개하자는 것이다.

• KSBB Journal
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• v.24 no.5
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• pp.415-419
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• 2009

In this study, the detoxification methods were evaluated for the removal of fermentation inhibitors from synthetic solution containing the composition similar to the lignocellulosic hydrolysate. The enzyme peroxidase and laccase were used as a biological treatment method. The physico-chemical methods such as adsorption and ion exchange were applied by using activated charcoal and ion exchange resins. The enzyme peroxidase showed a excellent removal of phenolic compounds. The 5-HMF and furfural were completely removed by activated charcoal. The anion exchange resin showed a good result for detoxification of acetic acid. The activated charcoal and ion exchange resins lead to a loss of sugars more or less. The choice of detoxification method must be made after considering the composition and inhibitors in hydrolysates.

• Proceedings of the Korean Fiber Society Conference
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• 1998.04a
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• pp.338-341
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• 1998

악취의 주원인은 염기성 취기의 대표인 암모니아, 산성 취기의 대표인 황화수소, 그리고 트리메틸아민이며, 이들은 법정 악취물질로써 지정되어 있다$^1$. 이와 같은 악취를 없애는 소취기구는 활성탄 및 제오라이트 등과 같은 물질에 대한 물리적 흡착에 의한 것, 산화제 및 환원제에 의한 화학반응에 의한 것, 미생물 및 효소에 의한 생물학적 반응에 의한 것으로 대별되지만, 물리 흡착은 재방출의 문제가 있고 화학 및 생물학적 반응에는 소취성분 자체의 유해성 및 반응후 물질의 유해성이 문제가 되는 경우가 있다.(중략)

• Journal of Korean Society of Environmental Engineers
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• v.28 no.7
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• pp.764-769
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• 2006

In the electrokinetic(EK) process, oxygen production by electrolysis was proportional to current density. The dissolved oxygen (DO) concentration in anode tank and bioreactor increased with the circulation rate of electrolyte. The bacterial population in bioreactor rapidly increased by the supplement of current, but the DO concentration deceased by the increased bacterial oxygen consumption. From the results of EK bioremediation for pentadecane-contaminated soil, the bacterial population and removal efficiency at 1.88 $mA/cm^2$ were lower than those at 0.63 $mA/cm^2$. This is because the high oxygen production rate largely increased the production rate of organic acids, which reduced the electrolyte pH and bacterial activity. At 0.63 $mA/cm^2$, the highest bacterial population and removal efficiency could be obtained due to the appropriate oxygen production and small decrease in pH.