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Pyrrolo[2,1-b]thiazole 카르복스아닐라이드 유도체의 합성 및 그들의 벼도열병균과 밀 붉은녹병균에 대한 선택적인 항균활성
한호규(Hoh-Gyu Hahn),남기달(Kee Dal Nam),양범승(Bum-Seung Yang),최경자(Kyung-ja choi),조광연(Kwang Yun Cho) 한국농약과학회 2005 농약과학회지 Vol.9 No.2
For development of new agrochemical fungicide, syntheses of pyrrolo[2,1-b]thiazole carboxanilide derivatives 9 and antifungal screening against 6 kinds of plant pathogens were carried out. Functionalization of carboxylic acid on C-2 into carboxanilide in the pyrrolo[2,1-b]thiazole resulted in new 20 candidates, in which are α,β-unsaturated carboxanilide and methyl groups that are in cis relationship. Treatment of acetoxy-1,4-thiazin with magnesium in refluxing methanol gave pyrrolo[2,1-b]thiazole ethyl ester 4 in higher yield than that of the previous report. Hydrolysis of this compound afforded the corresponding acid 5, which reacted with aniline derivatives in the presence of coupling reagent, DIC to give pyrrolo[2,1-b]thiazole carboxanilides 9. As the result of in vivo antifungal assay of 9 against rice blast, rice sheath blight, cucumber gray mold, tomato late blight, wheat leaf rust, and barley powdery mildew, some compounds showed selectively antifungal activities against the rice blast and wheat leaf rust.
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박종성(Jongsung Park),김창헌(Changheon Kim),이지원(Jiwon Lee),김지현(Jihyun Kim),유상혁(Sanghyuk Yoo),양범승(Bum Seung Yang) 한국태양광발전학회 2021 Current Photovoltaic Research Vol.9 No.3
In order to perform photovoltaic (PV) operation and management (O&M) efficiently, individual PV module monitoring is becoming more important. In this research, we developed wireless IoT sensor which can monitor individual photovoltaic modules. This IoT sensor can detect the output voltage, current and module temperature of individual modules and provide monitored data by wireless communication. Measured voltage error was 1.23%, and it shows 16.6 dBM, 0.42sec and 7.1 mA for voltage, transmittance output, response time and mean power consumption, respectively. IoT sensors were demonstrated in the test field with real climate environment condition and each of 5 sensors showed precise results of voltage, current and temperature. Also, sensors were compared with commercial power-optimizers and showed result difference within 5%.
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