• Title/Summary/Keyword: 건조기술

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Low temperature vacuum drying heat transfer characteristics of Korean raw oysters (한국산 굴의 저온진공건조 열전달특성에 관한 연구)

  • Kim, Kyung-gun;Song, Chi-sung;Choi, Se-hyun;Lee, Seo-Yeon;Mun, Soo-Beom
    • Journal of Advanced Marine Engineering and Technology
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    • v.40 no.1
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    • pp.1-9
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    • 2016
  • Oysters are rich in nutrients with good flavor, and disease prevention is required in both the East and the West for high-quality seafood. The best way to store and transport mass-produced oysters is using dry techniques. Using both hot and frozen drying technologies to obtain a perfectly dried oyster often destroys much of the flavor and nutrients found with the oyster meat. This study uses a low temperature vacuum drying technology to investigate the final weight ratio of wild and farmed dried oysters. Additionally, the heat transfer characteristics of steamed oysters are discussed in this paper.

The Comparison of Stiction Results of Anti-Stiction Methods for Polysilicon Surface Micromachining (다결정실리콘 표면 미세가공 기술을 위한 점착 방지법들의 성능 비교)

  • Lee, Youn-Jae;Han, Seung-Oh;Park, Jung-Ho
    • Journal of Sensor Science and Technology
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    • v.9 no.3
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    • pp.233-241
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    • 2000
  • This paper presents comparative results of various commonly used anti-stiction methods for polysilicon surface micromachining using identical test structures. Four different types of cantilevers - single cantilevers, cantilevers with dimples, cantilevers with anti-stiction tip, cantilevers with plate - with different widths and lengths were employed as test structures. The detachment length of cantilevers was examined depending on the anti-stiction methods and test structure types. After sacrificial layer was removed, evaporation and sublimation drying methods were used in the drying step when takes place the stiction between structure and substrate. Various final rinsing liquids such as methanol, IPA, and DI water were employed to compare anti-stiction results depending on surface tension and rinsing temperature. For sublimation drying method, methanol was used as an intermediate rinsing liquid. Also, the influence of a stress gradient of the polysilicon was investigated by performing the identical anti-stiction experiments on identical test structures with a stress gradient. In conclusion, sublimation drying method showed superior results to various evaporation drying methods and hence it is considered the best method for releasing polysilicon microstructure in polysilicon surface micromachining.

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Mineralogical and Drying Characteristics of Chinese Low Rank Coal for Coal Gasification (석탄가스화를 위한 중국산 저급 석탄의 광물학적 및 건조 특성)

  • Park, Chong-Lyuck;Kim, Byoung-Gon;Jeon, Ho-Seok;Kim, Sang-Bae;Park, Suk-Hwan;Lee, Jae-Ryeong
    • Journal of the Mineralogical Society of Korea
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    • v.23 no.3
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    • pp.199-209
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    • 2010
  • Coal gasification technology in the sector of domestic clean coal technologies is being into the limelight since recent dramatic rise of international oil price. In this study, we used a low rank coal from Inner Mongolia, China as a starting material for gasification. Various properties including optical, mineralogical, X-ray spectroscopic, X-ray diffraction, and drying property were measured and tested in order to estimate the suitability of the coal to gasification. The coal was identified as a brown coal of lignite group from the measurement of vitrinite reflectance. The coal has very low slagging and fouling potentials, and the ignition temperature is about $250^{\circ}C$. The major impurities consist of quartz, siderite, and clay minerals. Additionally, the coal had moisture content above 28%. Tests for finding effective drying method showed that the microwave drying is more effective than thermal drying.

Trend on the Recycling Technologies on the High-efficiency Rapid Cooling Method of Ladle Furnace Slag by the Patent and Paper Analysis (특허와 논문으로 본 제강 환원슬래그의 고효율 급냉 자원순환기술 동향)

  • Kim, Jin Man;Cho, Young-Ju;Cho, Bong-Gyoo
    • Resources Recycling
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    • v.23 no.2
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    • pp.90-97
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    • 2014
  • The artificial dry silica used as dry aggregates in domestic is collected increasing every year. It is required drying process for the production of dry aggregates, therefore, it is main culprit of the cost up of aggregates and air pollution by using fossil fuel for the solution, it is developed alternative aggregates for the replacement of dry aggregates very ungently. In this article, the patents and papers for the recycling technology on the high-efficiency rapid cooling method of ladle furnace slag were collected and analyzed. The open patents of USA (US), European Union (EP), Japan (JP), and Korea (KR) and SCI journals from 1977 to 2013 were investigated. The patents and journals were collected using key-words and filtered by the definition of the technology. The patents and journals were analyzed by the years, countries, companies, and technologies and the technical trends were discussed in this paper.

Microwave & Hot Air Drying Characteristic of Radish (마이크로파 혼합건조 방식에 의한 무의 건조특성)

  • 김종훈;정진웅;권기현;김진주
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • 2003.07a
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    • pp.287-294
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    • 2003
  • UR 농산물 협상 이후 국내 농림수산물 및 가공식품 시장의 수입개방이 확대되어 생산 농어민이 직접적으로 큰 피해를 보고 있을 뿐만 아니라 국내 농산물을 원료로 사용하는 산지 가공업체도 경쟁력 학보에 어려움을 겪고 있다. 수입식품 중에서는 국내생산이 이루어지지 않아 수입이 불가피한 품목도 있고, 또한 국내의 기술수준이 뒤떨어지기 때문에 품질경쟁력에서 열위인 품목도 있지만 대다수 품목은 중국을 위시한 후발 개도국에서 낮은 기술과 저임 노동력을 이용하여 생산된 단순가공품으로서 이들 품목은 국내산에 비하여 가격은 낮지만 품질이 조악하고 안전성이 낮은 것으로 알려져 있다. (중략)

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A Study on Development of High Speed Leisure Boat for Marine Leisure Popularization (해양레저 대중화를 위한 고속레저보트 개발에 대한 연구)

  • Kwon, Soo-Yeon;Lee, Hee-Joon
    • Journal of Korea Ship Safrty Technology Authority
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    • s.37
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    • pp.12-23
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    • 2014
  • 본 연구에서는 최근 증가하는 해양레저 수요 및 관심에 따른 대응을 위하여 고속레저 선박을 개발하고 이에 따른 국내 레저선박 건조기술 축적 및 경쟁력 향상을 목적으로 하였다. 따라서 선형 및 도면 개발도 중요하지만 이러한 내용들을 수요자들에게 홍보할 수 있는 정보변환알림시스템 및 홍보영상 매뉴얼도 함께 개발하였다. 따라서 연구 결과물을 통해 수요자 의견을 보다 쉽고 정확하게 반영하여 보트의 제품화를 하도록 하고 이를 통해 경쟁력을 높일 수 있도록 하였다.

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참전복 배합사료 첨가제로서 모자반 이용성

  • 이상민;허용주;임태준;김경덕
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.05a
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    • pp.253-254
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    • 2000
  • 전복은 부착기 유생을 부착 규조파판에 채묘하여 규조류를 주 먹이로 사육하여 각장 1cm 정도의 것을 바다에 방류하여 상품크기의 것을 다시 수확하는 방식으로 양식되어 왔으나, 최근에는 전복양식에 대한 관심이 높아짐에 따라 전복을 육상수조에서 양성하는 곳이 현저히 증가되고 있다. 하지만, 전복을 양성하는 양어가들은 육성용 먹이로 미역, 파래, 다시마와 같은 천연 먹이를 주로 사용하다가 여름에는 건조미역이나 건조다시마를 공급하고 있는 실정이어서 체계적인 양식 발전에 제한적인 요인이 되고 있다. (중략)

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