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반응성 RF 마그네트론 스퍼터로 증착한 AlN 박막의 물성 및 SAW소자 특성에 관한 연구
고봉철,전순배,황영한,김재욱,남창우,이규철 대한전기학회 2004 전기학회논문지C Vol.53 No.2(C)
AlN thin film has been deposited on the Al2O3 substrate with reactive radio frequency( RF) magnetron sputtering method. In this work, elelctromechanical coupling coefficient of AlN thin film was increased with an increase of AlN thin film thickness, and the maximum value was 0.11%. Insertion loss of SAW device was decreased with an increase of AlN thin film thickness and the minimum value was 33[dB]. SAW velocity of IDTs/AlN/Al2O3 structure and IDTs/AlN/Al2O3/Si structure were about 5480[㎧] and 5040[㎧] respectively.
원헌섭,박동권,권순배,조순옥,강성희,이재홍,황세정,정태성,김미경,최홍수,홍대기 한국식물병리학회 2019 식물병연구 Vol.25 No.1
This study researched the current occurrence status of viral diseases of solanaceous crops in the main production areas of Gangwon region, for four years from 2014 to 2018. From 2014 to 2018, in eight cities and counties including Chuncheon, CMV, BBWV2, PMMoV, TSWV, and PVY occurred in chilli peppers. In case of tomato, the research was performed in 2017 and 2018 while TSWV and TYLCV were verified in Chuncheon, Hoengseong, and Cheorwon. Especially, TYLCV occurred in Chuncheon region for the first time in 2017, which was verified in 2018. Lastly, the current occurrence status of viral diseases of bell peppers was researched in seven cities and counties like Gangneung, Hoengseong, and Cheorwon from 2015 to 2018. In the results, CMV, BBWV2, PMMoV, PepMoV, and TSWV were verified in bell peppers of Gangwon region. During the research period, there were no crops suspected or infected by BWYV, so that it is judged that there is no villiferous or infected aphid by this virus in Gangwon-do. Such results of this study could be used as the basic data for the stable production of crops through the early prevention of plant diseases occurring in the solanaceous crops of Gangwon region.