• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.9
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• pp.1265-1270
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• 2009

Pathogens contaminated on the surface of utensils could contribute to the occurrence of outbreaks due to cross-contamination to foods during the food preparation process. Therefore, the efficacy of chemical sanitizers (chlorine-based and alcohol-based commercial sanitizers) and dry-heat ($71^{\circ}C$) on inhibiting biofilms of five foodborne pathogens (Escherichia coli O157:H7, Salmonella Typhimurium, Pseudomonas aeruginosa, Listeria monocytogenes, and Staphylococcus aureus) on the surface of stainless steel and polypropylene were investigated in this study. Initial populations of pathogens were 8.8$\sim$9.3 and 9.4$\sim$10.3 log CFU/coupon on the surface of stainless steel and polypropylene coupon, respectively, and these populations were not significantly reduced when they were treated with water for 5 min at room temperature. Treatments with chlorine sanitizer and dry-heat were not effective on inactivating pathogens on the surfaces of stainless steel and polypropylene. In contrast, treatments with alcohol sanitizer were very effective on inactivating pathogens on the surfaced of stainless steel and polypropylene. Reduction levels ranged from 3.4 to 6.4 log and from 5.5 to 7.4 log CFU/coupon in stainless steel and plastic coupons, respectively. From these results, alcohol-based sanitizer could be used as a potential way for controlling microbial contamination on the surface of utensils, cooking equipment, and other related environments.

• KSBB Journal
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• v.20 no.1 s.90
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• pp.50-54
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• 2005

Tar is often produced during the carbonization of cellulose that limits the formation fibrous structure of the carbonized sample. This problem was reduced by applying a high temperature $(up\;to\;800{\circ}C)$ during carbonization process. Alternatively, dry cellulose was immersed in toluene and ultrasonicated prior to carbonization. In both cases, complete fibrous structures were not achieved. The formation of tar was reduced by the heat treatment of cellulose in the presence of HCI vapor before carbonization process. Such treatment before carbonization yielded mostly the fibrous structures of the carbonized sample as evident from SEM analysis. Similar results were found when the cellulose was subjected to a heat treatment in an inert condition followed by the removal of tar by the oxidation process prior to the carbonization.

• Proceedings of the Korean Society of Crop Science Conference
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• 2000.04a
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• pp.184-185
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• 2000

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2007.10a
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• pp.517-519
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• 2007

• Proceedings of the Optical Society of Korea Conference
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• 2000.02a
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• pp.62-63
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• 2000

광정보 처리 시스템의 기록매질로 많이 연구되고 있는 포토폴리머는 빛의 세기에 따른 굴절률 변화로 정보를 기록하며, 회절효율이 높은 특성을 가지고 있다. 화학처리 없이 건조처리(dry processing)만으로 쉽게 홀로그램을 제작할 수 있으며, 노출이 곧 자체현상(self-developing)이므로 처리가 간편한 장점을 갖고 있다. 최근에는 높은 저장 밀도와 빠른 액세스 시간을 동시에 제공할 수 있는 홀로그래픽 메모리 시스템의 기록매질로 적용하기 위한 연구가 활발하게 진행되고 있다. (중략)

• Proceedings of the KIEE Conference
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• 1988.07a
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• pp.363-366
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• 1988

A new $NH_{3}-O_{2}$ oxidation method was estimated by the electrical properties of the fabricated n-MOS transistor. For the C-V characteristic curves the Qox are almost equal to Qss and no hysteresis phenomena are observed. The Id-Vds characteristics show that $NH_{3}-O_{2}$ oxidation method is superior to Dry oxidation.

• Proceedings of the Korean Nuclear Society Conference
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• 2005.05a
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• pp.321-322
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• 2005

• Plant Resources
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• v.8 no.1
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• pp.9-12
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• 2005

TO select the most suitable crop and variety of forage for productivity at the southern part of Korea, The crops of wheat, barley and rye were grown from Oct. 1999 to June 2000. Paldanghomil variety of rye crop was shown to have the highest productivity in comparison to other varieties of crops used in this experiment. It showed relatively high plant height, number of tiller, forage yield and dry matter yield. There fore, it was concluded that Paldanghomil of rye crop was the most suitable crop with high yield in the southern part of Korea. The heritabilities of all characters were estimated to be high.

• Proceedings of the KIEE Conference
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• 2005.11c
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• pp.93-95
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• 2005

건식변압기는 난연성 변압기로서 옥내나 선박과 같은 화재의 위험성이 있는 곳에 주로 사용된다. 본 연구에서는 삼상 건식변압기의 온도분포특성을 설명하였다. 부하율에 따라 온도분포특성시험을 실시하였으며, 온도센서와 열화상카메라를 이용하여 변압기의 온도를 측정하였다. 분석결과 온도는 두 권선이 인접한 곳에서 가장 크게 나타났다.

• Proceedings of the Korean Society of Toxicology Conference
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• 2003.10b
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• pp.121-121
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• 2003

Cricket (Gryllus bimacutus) is mass-bred in 6 cycles per one year in insect farms. They are used as dry or live foods for animals, tropical fish, reptile and amphibians. Therefore, it is necessary to study the genotoxicity of whole bodies of G. bimaculatus.(omitted)