• Title/Summary/Keyword: 유지효과

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Protective effects of h-BN monolayer for silicene

  • Lee, Dong-Heon;Song, Ho-Cheol
    • Proceeding of EDISON Challenge
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    • 2015.03a
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    • pp.396-399
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    • 2015
  • 제일원리계산을 기반으로 실리센을 보호하는 h-BN의 효과에 대해 연구하였다. h-BN의 화학적 안정성으로 인하여, 실리센에 대한 기판과 불순물의 영향을 차단하여 자유지지 실리센의 성질을 유지하는 것을 보였다. 부분적으로 수소처리된 실리센 역시 h-BN 단일층 내에서 안정적으로 고유의 성질을 나타내는 것을 보였다.

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해군 전력증강방향과 당면과제

  • Kim, Il-Sang
    • Defense and Technology
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    • no.8 s.174
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    • pp.22-29
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    • 1993
  • 자주국방을 위해서는 최소한 우리의 해로는 우리가 효과적으로 방어할 수 있는 함정과 무기체계를 갖추어 적절한 해상세력을 유지해야 합니다 그러나 우리는 지금까지 해군을 지상군에 종속시키려는 정책을 퍼 왔었습니다 이제 국방부는 육.해.공 3군이 균형적으로 발전하는 전략을 구사해야 하며, 인사문제도 각군의 인원수 비례가 아닌 진정한 의미의 균형을 이루는데 힘써야 할 것입니다

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Hwangto Dyeing : Extraction Method and Treatment of some Fixing Agents (황토염색 : 추출방법과 고착제 처리)

  • 박은주;신윤숙;류동일
    • Proceedings of the Korean Fiber Society Conference
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    • 2001.10a
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    • pp.55-58
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    • 2001
  • 광물성 소재인 황토는 우수한 통기성, 습도조절능력, 항균성, 탈취성능, 적조 방지 능력, 실온 유지능력, 방열효과, 우수한 원적외선 방사량 등의 장점을 지니고 있어 건축용 자재, 적조제거제, 향장 및 염색분야에 널리 사용되고 있다[1]. (중략)

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동기식 디지틀신호 전송을 위한 고속 광전송 기술

  • Sin, Dong-Gwan;Park, Mun-Su;Sim, Chang-Seop
    • ETRI Journal
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    • v.11 no.2
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    • pp.64-70
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    • 1989
  • 본고에서는 먼저 동기식 디지틀 다중화 신호의 특성에 대해 간략히 살펴보고, STM-16 동기식 디지틀 다중화 신호 전송을 위한 광송수신기의 설계 및 다중화/역다중화 설계 기술에 대해 고찰한다. 또한 광전송 시스팀의 유지 및 운용 보수를 효과적으로 수행하기 위한 방안에 대해 고려한다.

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일본 육상자위대의 고기능 전투복과 개인장구

  • Lee, Su-Sik
    • Defense and Technology
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    • no.4 s.242
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    • pp.82-87
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    • 1999
  • 전투원(전투병사) 개인방호체계는 각개병사와 병사들이 전술적 환경에서 사용하기 위해 착용, 소모, 휴대하는 모든것을 포함하는 방호체계들의 시스템이다. 이러한 전투원 개인방호체계의 현대화 노력은 "위력", "지휘 및 통제", "생존성", "유지능력", "기능성"을 극대화하고 전투원 체계들을 디지털 전장에서 통합함으로써 전투상승효과를 달성할 수 있다

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Development of Framework for Asset Management of Public Building (공공건축물의 자산관리 프레임워크 개발)

  • Cho, Sang-Ouk;Ko, Kyu-Jin;Hwang, Jeong-Ha;Lee, Chan-Sik
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.19 no.2
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    • pp.133-142
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    • 2015
  • The budget for public buildings is expected to increase to their maintenance, and the systematic maintenance and sufficient budget are recognized as the important factors for building maintenance. In Korea, buildings are not systematically maintained due to the lack of manpower, expertise and basis of maintenance budget estimates. Compared with Australia where the facility maintenance is optimized through asset management, Korea has only passive maintenance systems that focus on regulations. The introduction of the systematic asset management is required to ensure the advanced building maintenance in Korea. In this study, the asset management processes for social infrastructure facilities in and out of Korea were analyzed, and the asset management framework for public buildings were established. The asset management procedure consisted of ordinary asset management procedure, selective asset value assessment. The framework in this study was developed focusing on the asset management task for public buildings and presented the detailed contents of each step. The application of this framework to the actual work will enable the systematic management of building's value and performance, and the efficient appropriation of the maintenance budget.

Effect of Ethanolic Extract of Schizandra chinensis for the Delayed Ripening Kimchi Preparation (오미자(Schizandra chinensis) 추출물이 김치의 과숙억제에 미치는 영향)

  • Moon, Young-Ja;Park, Sun;Sung, Chang-Keun
    • The Korean Journal of Food And Nutrition
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    • v.16 no.1
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    • pp.7-14
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    • 2003
  • This study mainly focused on to investigate the effects of Schizandra chinensis on the growth of a bacterium, CS6 which was isolated from kimchi. CS6 was final]y identified to lactobacillus plantarum that caused acidification of kimchi. The ethanolic extract of Schizandra chinensis(EES) inhibited the growth of L. plantarum. Minimum inhibition concentration of crude EES on L. plantarum was 62.5mg/$m\ell$. In broth culture, 5$\mu\textrm{g}$/$m\ell$ of EES completely inhibited the growth of L. plantarum during fermentation. The addition of 0.4% of EES has no apparent effect on quality including the taste and color on kimchi. It was expected that EES-containing kimchi could extend the period of preservation. Analysis of organic acids in water fractions of EES was carried out by HPLC. It is apparent that antimicrobial active fractions contained the highest concentration of succinic acid, a little tartaric acid and malic acid. Among these organic acids, succinic acid showed the strong inhibitory effect against L. plantarum CS6 in vitro. Succinic acid-containing kimchi with a concentration of 0.4 and 0.5% had the inhibitory effect on growth of L. plantarum. Inhibitory effect of EES on amylase, cellulase and pectinase was also tested. In conclusion, the present experiment demonstrated that EES inhibited the growth of L. plantarum, and various enzyme activity. EES-containing kimchi was sustained the hardness, and initial acidity during fermentation. EES was considered as the possible additive of kimchi process and EES added in kimchi increase the quality, and storage period of kimchi.