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김종국,손태화,문광덕 한국식생활문화학회 1993 한국식생활문화학회지 Vol.8 No.4
건시의 품질향상을 위하여 국내 유명산지의 건시를 시료로 하여 건시의 제조시험과 품질평가에 관한 기초자료로서 그 품질요소를 조사하였다. 건시의 수분함량은 30-36%였으며, 탄닌함량은 0-20%로 무처리구는 CO₂와 alcohol 처리구보다 그 함량이 높게 나타났다. 전당함량은 55-60%였고 그 구성은 glucose와 fructose로 구성되어 있었다. 열풍건조에 의한 건시의 제조는 천일건조보다 그 품질이 전반적으로 우수하였으며 특히 slice 한 제품의 품질은 전과의 경우보다 비교적 우수하였다. This study was performed to improved the quality of dried persimmon. For this, the investigation of quality factor and processing experiments were performed. The moisture contents of dried persimmons were 30 to 36% and it was the most important component of the quality. Tannin contents were 0 to 20% and non-treated persimmon had higher tannin contents than treatment of carbon dioxide and alcohol. Total sugar contents were 55 to 60% and it was composed in glucose and fructose. Processing of dried persimmon by artificial-drying seemed to be useful when it needed to shorten the drying time or it continued rainy day during sun-drying. From the result of quality evaluation, sliced dried persimmon was better than whole dried persimmon in quality, so the sliced dried persimmon was expected that it has a little marketability.
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비정질 다이아몬드 코팅을 위한 자장여과 아크소스의 동작 특성에 관한 연구
김종국,이구현,kim, Jong-Guk,Lee, Gu-Hyeon 한국기계연구원 2000 硏究論文集 Vol.30 No.-
The filtered vacuum arc source (FVAS), which is adopted by magnetic filtering methode to remove the macro-particle in vacuum arc plasma, was composed of a torus structure with bending angle of 60 degree. The radius of torus was 266 mm, the radius of plasma duct was 80 mm and the total length was 600 mm. The magnet parts were consisted of one permanent magnet, one magnetic yoke and five solenoid magnets. The plasma duct was electrically isolated from the ground so that a bias voltage could be applied. The baffles inside plasma duct were installed in order to prevent the recoil effect of macro-particles. Graphite was used as the cathode material to coat the amorphic diamond film and its diameter was 80 mm. The amorphic diamond film attracts much attention due to its excellent mechanical, optical and tribological properties suitable for wide range of applications. The effects of solenoid magnet in plasma extraction were studied by computer simulation and experiment using Taguchi's method. The source and extraction magnet affected the arc stabilization. The extraction beam current was maximized with low value of the source magnet current and high value of the filtering magnet current. Optimum deposition condition was obtained when the currents of arc discharge, source, extraction, bending, deflection and outlet magnet were 30 A, 1 A, 3 A, 5 A, and 5 A, respectively.
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