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김장희(Jang Hee Kim),양기숙(Ki Sook Yang),김태희(Tae Hee Kim) 대한약학회 1999 약학회지 Vol.43 No.1
Scutellaria baicalensis Georgi (Labiatae) has been extensively used in treatment of diarrhea, conjunctivitis, gastritis, enteritis and skin disease. As instructed in old description, the Scutellariae Radix should sometimes be processed before use. To shed light on the changes of chemical compositions by processing as well as processing method-activity relationships, Scutellariae Radix was heated at 160oC-200oC for 30 min. in furnace or soaked with 20% EtOH (SPE) and boy`s urine(SPU), respectively, which are one of processing methods and then heated at 170oC for 30 min. To isolate the chemical components, Scutellariae Radix with/without processing were extracted with EtOH and EtOH exbract was fractionated with ether, ethyl acetate and butanol to give respective fractions. Ether and EtOAc fractions obtained from the processed drug with urine (SPU) were subjected to chromatography to obtain six components, oroxylin A, wogonin, chrysin, baicalein, baicalein 7-0-beta-D-gucopyranoside and beta-si-tosterol 3-0-beta-D-gucopyranoside. All the isolated compounds were identified by means of physico-chemical and spectroscopic methods (IR 1H-NMR, 13C-NMR, Mass). By HPLC determination, the changes of the contents for each isolated components from SPE and SPU samples were observed. It was found that the content of nonglyecosidic flavones such as oroxylin A, wogonin, chrysin and baicalein was increased markedly, whereas the content of baicalin and baicalein 7-O-beta-D-glu-copyranoside was signaficantly decreased in both samples as compared with those of Scutellariae Ra-dix. When the sample was soaked with boy`s urine, the total amount of nonglycosidic flavones was higher than that of processing with 20% EtOH.
전통 목구조에 대한 구조분야 연구동향 분석 및 향후 연구방향 제안
김영민(Kim Yeong-Min),김장희(Kim Jang-Hee) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
This study analyzed research trends in traditional wood structures from structure point of view, and proposed further research direction. Research about traditional wood structures in structural area initiated in 1980s, and became active in the late 1990s and early 2000s. From the study about flow of forces based on frame constitution, to the modeling technique for structural analysis, seeking structural characteristics for Gongpo and various connection both by analysis and experiments, analyzing causes of damages for main structural members and its strengthening schemes, and nowadays dynamic analysis for seismic stability, and so on, are performed. As a proposal for future research direction, studies for integrating former research results are required.
김영민(Kim Yeong-Min),김장희(Kim Jang-Hee),이슬기(Lee Seul-Gi) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.5
In this paper, we reviewed structural safety of the real-built new traditional Korean-style house and proposed appropriate section for the main structural members. The mechanical properties of wood depends on the terms and conditions of the environment, so we applied correction factors in obtaining design allowable stress. The structural safety was checked by investigating allowable stress ratio, that is, the ratio of actual stress to the design allowable stress. As the results of the strength check, the stress ratio for the columns are about 48~50%, and for flexural members such as purlin and beam are about 49~66% level. For the serviceability review, the defection of the main flexural members were about 25~64% level compared to the allowable deflection. We proposed appropriate sectional size for the main structural members still satisfying safety and serviceability criteria reflecting structural characteristics such as steel connection and needs to expanding supply. Here, the referenced stress ratio for the strength check was set to 80% level considering possible error and imperfection. As a results, the cross-sectional size can be reduced up to about 20~30% for columns and 20~50% for flexural members.
김영민(Kim, Yeong-Min),김장희(Kim, Jang-Hee) 대한건축학회 2014 大韓建築學會論文集 : 構造系 Vol.30 No.2
In this study the section tables were developed which help to decide appropriate section size of lateral members of 3-ridge and 5-ridge roof hanok, such as, ridgepole, Jusim-Dori, Dori and Jangyeo, Pyung-Bang and Chang-Bang, and rafters. The main items which were considered in developing section tables are roof structure types, timber species and material properties, overburden loads, length and disposition of members. We proposed schemes for computing allocation loading area for each lateral members according to geometric shapes and topological disposition between members. The length of members and size of sections are restricted to a field applicable ranges. The filed applicability of the developed section tables were evaluated using a test-bed hanok in Myongji University and a pilot hanok in Eunpyeong hanok village. The evaluation was carried out by comparing three results of sections from detailed structural design, section tables and actual construction. It turns out that the sections from section tables are somewhat conservative but has sufficient field applicability in early design stage.
김영민,김장희,이슬기,Kim, Yeong-Min,Kim, Jang-Hee,Lee, Seul-Gi 대한건축학회 2012 대한건축학회논문집 Vol.28 No.5
In this paper, we reviewed structural safety of the real-built new traditional Korean-style house and proposed appropriate section for the main structural members. The mechanical properties of wood depends on the terms and conditions of the environment, so we applied correction factors in obtaining design allowable stress. The structural safety was checked by investigating allowable stress ratio, that is, the ratio of actual stress to the design allowable stress. As the results of the strength check, the stress ratio for the columns are about 48~50%, and for flexural members such as purlin and beam are about 49~66% level. For the serviceability review, the defection of the main flexural members were about 25~64% level compared to the allowable deflection. We proposed appropriate sectional size for the main structural members still satisfying safety and serviceability criteria reflecting structural characteristics such as steel connection and needs to expanding supply. Here, the referenced stress ratio for the strength check was set to 80% level considering possible error and imperfection. As a results, the cross-sectional size can be reduced up to about 20~30% for columns and 20~50% for flexural members.