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분말성제제의 안정성에 관한 연구 : 수종제산제중의 Ascorbic acid 의 안정성 관한 연구
신상철,이민화,우종학 한국약제학회 1973 Journal of Pharmaceutical Investigation Vol.3 No.1
There are many reports on the stability of drugs in powders and tablets. The stabilities of ascorbic acid in the antacid preparations, such as calcium carbonate, magnesium carbonate, magnesium trisilicate, magnesium alumino silicate, and dried aluminum hydroxide gel under various humidities were examined. From the result of the experiment, it was assumed that the concentration of ascorbic acid, the amount of water-vapor sorption, and the physical character of the antacid ingredients were the main factors, influencing the degradation of ascorbic acid. The ascorbic acid, mixed with carbonates, such as calcium carbonate, was degradaded rapidly, while the preparation with dried aluminum hydroxide gel was slightly degraded after 10 days. A 2% ascorbic acid in the prepation was rapidly degraded than 10% ascorbic acid in the preparation.
신상철,정상배 한국임학회 1985 한국산림과학회지 Vol.68 No.1
主要經濟樹인 잣나무林에 最近 잣나무넓적잎벌(Acantholyda Posticalis Posticalis M.)의 被害가 大發生하여 林木의 生長減少와 枯死現象을 招來하고 있는 바 本 害蟲에 對한 效果的인 防除法을 開發하기 爲하여 藥劑에 依한 樹冠撤布 및 燻煙劑處理와 비닐 被覆效果試驗을 實施하여 다음과 같은 結果를 얻었다. 1) 잣나무넓적잎벌의 效果的인 防除藥種은 Alsystin, Zulon 및 NAC 水和劑 等이며 殺蟲率은 97% 以上이었다. 2) 效果的인 防除時期는 樹上의 加害期인 7月中旬∼8月上旬의 4∼5齡幼蟲期였다. 3) 適正藥劑撤布回數는 2∼3回였다.