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Atsushi Masuda,Minoru Akitomi,Masanao Inoue,Keizo Okuwaki,Atsuo Okugawa,Kiyoshi Ueno,Toshiharu Yamazaki,Kohjiro Hara 한국물리학회 2016 Current Applied Physics Vol.16 No.12
Processes for potential-induced degradation (PID) and recovery phenomena were characterized using ptype multicrystalline Si photovoltaic modules and by PID test method using Al plate. Very severe PID phenomena accompanied with a drastic reduction in both open-circuit voltage and shunt resistance were observed within only several hours. It was found that PID phenomena are strongly accelerated at higher temperature and under higher negative-voltage application, on the other hand, PID phenomena do not necessarily require high humidity in this test method using Al plate. Na diffusion from the cover glass to the Si cell was observed after PID test. Recovery process from PID was also observed by applying positive voltage. However, complete recovery of photovoltaic performances was observed at room temperature in the dark without positive-voltage application for test modules with PID although recovery process requires a few hundred days.
Okazawa, Atsushi,Akamatsu, Miki,Ohoka, Akira,Nishiwaki, Hisashi,Cho, Won Jea,Nakagawa, Yoshiaki,Nishimura, Keiichiro,Ueno, Tamio 전남대학교 약품개발연구소 1998 약품개발연구지 Vol.7 No.1
The binding activity of imidacloprid and related compounds to nicotinic acetylcholine receptors (nAChR) of house flies was measured by use of radioactive χ-bungarotoxin as a ligand. Variations in the activity were examined three-dimensionally using comparative molecular field analysis (CoMFA). The CoMFA results suggest that one conformer among the four stable ones is active and provide support for one of the proposed binding models for this class of compound. in which the nitrogen atom of the pyridine ring and the nitrogen atom at the 1-position of the imidazolidine ring interact with the hydrogen-donating and electron-rich sites of nAChR. respectively. The CoMFA field map showed that the nitroimino moiety and a portion of the imidazolidine ring were mainly surrounded by a sterically and electrostatically sensitive region of nAChR.