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강신호(S.H. Kang),최희숙(H.S. Choi),양성호(S.H. Yang),이정혁(J.H. Yi) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
Recently, a number of the heavy duty gas turbines have been installed in several power plants in Korea. The gas turbines are newer models, which are categorized as a 1300 class engine, adopting the upgraded materials and the protective technologies such as coating and cooling. Therefore corresponding technology development for repair and rejuvenation of hot gas path components are inevitable. The higher operational temperature accelerates material degradation as well as thermally induced stress in the components. To prevent catastrophic failure, the periodic repair using adequate knowledge and processes are essential. In order to cure thermal stress cracking occurred in fixed vanes, Activated Diffusion Healing is now a versatile solution following the hydrogen or fluoride ion cleaning. For early stage of the creep damaged materials for rotating blades, Hot Isostatic Pressing (HIP) or rejuvenation heat treatment is applicable to encourage metallurgical recovery. These are the state of the art technologies that are immediately available in Korea.
한방부산물의 발생 현황과 영양적 특성 및 한약재의 생리활성 물질 분석에 관한 연구
박근규,정원형,김창원,최희숙,강창원,양시용,김태종 건국대학교 동물자원연구센터 1999 動物資源硏究誌 Vol.20 No.-
본 연구는 한방부산물의 사료화를 위한 기초자료고서 한방 부산물의 생산량과 이용 가능량의 추정 및 발생원별 성분 함량과 가금에게 유용한 한약재의 생리활성 물질을 분석하기 위하여 실시하였으며 아래와 같은 결과를 얻었다. 1. 1996년 기준으로 한방 부산물의 국내 총생산량 및 이용 가능량은 각각 100,900 M/T 및 35,670 M/T으로 추정되었다. 2. 한의원에서 수집된 시료의 조성분 함량은 건물, 조단백질, 조섬유 함량이 각각 40.7±9.0%, 12.1±1.1%(건물기준), 20.0±1.0%(건물기준)로 나타났으며, 봄, 여름간에 계절별 조성분 함량 차이는 나타나지 않았다. 3. 동물성 한방 부산물의 조성분 함량은 건물, 조단백질, 조섬유 함량이 각각 47.5±4.7%, 30.1±2.0%(건물기준), 15.8±2.1%(건물기준)로 나타났다. 4. 제약회사에서 수집된 시료의 조성분 함량은 건물, 조단백질, 조섬유 함량이 각각 29.8%±5.7%, 13.0±5.2%(건물기준), 28.9±13.8%(건물기준)로 다른 시료에 비해 수분함량이 높고 단일약재의 경우 약재의 종류에 따라 조성분 함량이 크게 달랐다. 5. HPLC를 이용한 표준 생리활성 물질의 retention time을 분석한 결과 scopoletine, coumarine, adenosine, coumaric acid, saponin, oleanolic acid, berberin이 각각 4.32, 5.64, 2.38, 1.79, 2.04, 6.20, 15.50분으로 나타났다. This study was conducted to estimate the amount and availability of oriental medicine residue (OMR), to analyze chemical composition of OMR from different sources for developing feed resources, and to characterize bioactive substances of oriental medicines for poultry. The results obtained were as follows; 1. Estimated total amount of domestic production and availability of OMR in 1996 were 100,900 M/T and 35,670 M/T, respectively. 2. Chemical composition of OMR collected from oriental medical clinic was 40.7±9.0%(DM), 12.1±1.1% (crude protein, DM basis) and 20.0±0.1% (crude fiber, DM basis). Seasonal differences between spring and summer were not detected. 3. Chemical composition of OMR from animal origin was 47.5±4.7%(DM), 30.1±2.0% (crude protein, DM basis) and 15.8±2.1% (crude fiber, DM basis) for DM, crude protein and crude fiber, respectively. 4. Chemical composition of OMR collected from pharmaceutical company was 29.8±5.7%, 13.0±5.2%(crude protein, DM basis), 28.9±13.8% (crude fiber, DM basis), having higher concentration of moisture than OMR collected from other sources. In case of using single oriental medicine, the composition of OMR was highly dependent on the chemical nature of oriental medicine. 5. Retention times of bioactive substances by HPLC analysis were 4.32, 5.64, 2.38, 1.79, 2.04, 6.20 and 15.50 for scopoletine, coumarine, adenosine, coumaric acid, saponin, oleanolic acid and berberin, respectively.