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한국에서 비만 치료에 쓰이는 한약에 대한 연구 동향 보고: 2015년부터 2019년까지의 국내외 논문을 중심으로
김수전 ( Soo-jeon Kim ),서연호 ( Yeon-ho Seo ),이한솔 ( Han-sol Lee ),장호경 ( Ho-kyung Chang ),조재흥 ( Jae-heung Cho ),김고운 ( Koh-woon Kim ),송미연 ( Mi-yeon Song ) 한방재활의학과학회 2020 한방재활의학과학회지 Vol.30 No.4
Objectives This study has been conducted to verify frequently used herbs and herbal formulas to treat obesity in Korea during 2015 to 2019. Methods Publications related to treatment of obesity using herbal medicines from 2015 to 2019 were retrieved from 12 databases (PubMed, EMBASE, Scopus, China National Knowledge Infrastructure [CNKI], Koreanstudies Information Service System [KISS], National Digital Science Library [NDSL], Research Information Sharing Service [RISS], DBPIA, KMBASE, KoreaMed, KoreanTK, Oriental Medicine Advanced Searching Integrated System [OASIS]). Extracted articles were analyzed in terms of publication year, journal, and type of herbs. Results A total of 136 studies have been included in this study. 33 herbal formulaes and 129 herbs have been analyzed. Taeyeumjowui-tang was the most frequently studied herbal formulae and Ephedrae Herba was the most frequently studied herb. Ginseng Radix was the most frequently studied single herb in isolation from herbal formulae. Conclusions These results suggest that various herbs and herbal formulae can be used to treat obesity. Since this study includes every type of study, additional studies based on clinic are thought to be necessary. (J Korean Med Rehabil 2020;30(4):89-103)
Duct System 을 이용한 흡음재의 음향특성 연구
金禮顯,張浩京,李俊河,吳旻奎 嶺南大學校附設 基礎科學硏究所 1989 基礎科學硏究 Vol.9 No.-
In duct-system, it is important to have an efficient method to measuring acoustic properties of absorption materials. The standing wave ratio method is a well-known technique in duct-system for measuring the acoustical characteristics of materials. This method is to find the sound pressure maximum and minimum in duct. In this paper, acoustical characteristics of absorption materials are investigated by using the standing wave ratios measured in duct-system. The results showed that the acoustical characteristics of seven materials depend on its surface roughness, porosity and the frequencies used for the measurements. Above all, absorption coefficients of absorption materials with a great porosity were higher than those of absorption materials with a small porosity. In particular, the air gap between the materials increased very much its absorbing effect at a certain frequency.