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양파즙과 양파박을 첨가한 당화 최적조건 및 당화물의 효능
김희대,이종태,문진성,류충호 경상국립대학교 농업생명과학연구원 2019 농업생명과학연구 Vol.53 No.6
본 연구는 최적의 당화 조건을 구명하기 위해 양파즙과 양파박을 0, 10, 20%로 첨가했다. 처리별로25, 30, 35℃에서 72시간 동안 당화시켰다. 35℃의 당화 온도에서 처리 24시간 후 양파즙 첨가 20%에서 13.2 ◦Brix, 양파박 첨가 20%에서 19.6 ◦Brix의 당도를 나타내었다. 그러나 관능 평가결과 처리 간에 크게 차이가 나지 않았다. 양파박을 사용한 양파 당화물이 염증 유발물질인 히스타민 방출량을 14% 억제하는 효과를 나타내었다. ELISA 분석 결과 양파당화물이 대조군에 비해 IL-8과 TNF의 방출을 보다 효과적으로 차단할 수 있었다. To determine the optimum saccharification conditions, onion juice and pomace were added at 0, 10, and 20% of the total amount. The mixed materials were then saccharized at 25, 30, and 35℃ for 72 h. After 24 h, the 20%-added onion juice or pomace and a saccharification temperature of 35℃ resulted in the highest sugar content of 13.2˚Brix for onion juice and 19.6˚Brix for onion pomace. However, sensory evaluation was not significantly different among the treatments. The saccharized onion products from onion pomace inhibited inflammationmediating substances (14% inhibition in histamine release). ELISA analysis for determining cytokine release showed that the saccharized onion products had a more effective.
Investigation of Resonant Local Surface Plasmon Effects Using CdSe Quantum Dots
김희대,허근 한국진공학회 2023 Applied Science and Convergence Technology Vol.32 No.2
The local surface plasmon effects of colloidal cadmium selenide (CdSe) quantum dots (QDs) were observed at a low temperature (approximately 5 K). As the wavelength between the CdSe QDs and metals is precisely tuned, the enhancement effects of CdSe photoluminescence (PL) significantly increase because of the increased coupling effects between the plasmonic fields of the metal surfaces of Au and Ag and the exciton states of a single CdSe QD. The PL enhancement effect of Au was observed to be approximately six times higher than that of Ag because of enhanced coupling. This result demonstrates the importance of wavelength matching in maximizing the surface plasmon effects and achieving enhanced PL in various device applications.
한·미·일의 교육재정 조달방법과 재원에 관한 비교 연구
김희대 中央大學校 韓國敎育問題硏究所 1993 韓國敎育問題硏究所論文集 Vol.- No.8
The purpose of this study is to obtain a suggestion about a scheme to secure educational finance. So I made a comparative study of the methods of supply for the educational finance and funds in three nations : Korea, America and Japan. As a result of these studies, I came to the conclusion as followings ; When Korea is compared with America and Japan ; first, the amount of investment in public school expenses from G. N. P. Which America and Japan are making is higher than Korea. Second, the methods of supply the educational finance and the form of funds in America and Japan are various than Korea. third, the local government makes a great effort to support the educational finance, and so the rate of self-supporting in school expenses between public school and private school, but to correct this, government is enforcing the support on finance. Therefore, to improve the finance of Korea education, followings are needed ; First, we should increase the absolute size of educational investment. second, we should remind local government of responsibilities on education and third, make a great effort to increase the school expenses through diversity of the supporting methods of educational finance, and lastly, government ought to support actively for the private school.
김희대 한국소음진동공학회 1997 소음 진동 Vol.7 No.5
본 글에서는 위성체가 겪게 되는 여러 가지 환경 중에서도 특히, 발사체가 이륙되어 천이궤도 진입시까지 위성체에 발생되는 진동 현상과, 이와 같은 발사 환경에 의해 위성체설계에 하자가 없는지를 확인하는 절차로서 지상에서 행해지는 시험의 종류와 방법에 대해 알아보고자 한다.
김희대,신명석,이준규,임상철 대한이비인후과학회 2007 대한이비인후과학회지 두경부외과학 Vol.50 No.5
cavity and has a propensity for frequent local recurrencesand distant metastasis. It sometimes has variable histopathologic patterns in the same tumor, which makes diagnosis dificult. A very rare case of adenoid cystic carcinoma of the nasal septum, initially thought to be pleomorphic adenoma, is presented along with a review of the literature. (Korean J Otolaryngol 2007 ;50 : 460-3) :Adenoid cystic carcinoma· Pleomorphic adenoma· Nasal septum.