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신대윤,문옥란,신찬기 조선대학교 환경공해연구소 2007 環境公害硏究 Vol.20 No.1
The incineration process has commonly used for wastes amount reduction and thermal treatments of pollutants as the technologies accumulated. It investigated the recycling characteristic of the fusion slag which is a last by-product which occurs from 3 facilities which are developed with Municipal waste heat decomposition gasification fusion facility of domestic. We investigated the surface characteristic of 3 melting facility slag with SEM. Therefore we found the surface is soft by cooling water. Also the surface is tough and has small air bubble by cooling air. Ca/Si ratio for alkalinity is high from the slag of the S type melting facility. The slag of T type contents contains much Fe. The melting slag has heavy metals whose contents are Cr 312.1㎎/㎏, Cd ND. Cu 105.9㎎/㎏ and Pb 3.0㎎/㎏. Each heavy metal reduction ratio is Cr 10.72%, Cd 100%, Cu 95.9%, Pb 99.9%. The amount of heavy metals contained fly ash is highly reduced through a heat decomposition fusion process re-in scattering. The Dioxin contents of fusion slag is as following: S type 2.92 pg-TEQ/g, T type 0.87 pg-TEQ/g and P type 0.21 pg-TEQ/g These are very low level comparing with the Dioxin standard 3ng-TEQ/G of Japan. Leaching rate is very low. This satisfies the recycling standard of Germany and the Dioxin Standard of Japan. Therefore we concluded that the possibility of secondary contamination may not happen.
목재방부제(CCA) 오염토양의 소성가공 굴껍질을 이용한 비소 안정화
문덕현 ( Deok Hyun Moon ),정경훈 ( Kyung Hoon Cheong ),김태성 ( Tae Sung Kim ),김지형 ( Jee Hyeong Khim ),최수빈 ( Su Bin Choi ),문옥란 ( Ok Ran Moon ),옥용식 ( Yong Sik Ok ) 韓國環境農學會 2009 한국환경농학회지 Vol.28 No.4
폐굴껍질을 분쇄하여 만든 안정화제 NOS와 NOS를 900℃에서 2시간 소성하여 제작한 안정화제 POS를 비소오염토양에 적용시켜 처리하여 28일 동안 습윤양생 시켜 토양오염공정시험기준 (1N HCl 추출)에 따라 비소 가용능을 평가하였다. NOS와 POS 모두 오염토양 무게대비 함량이 증가할수록 비소오염 토양안정화에 효율적이었다. 특히 주성분이 방해석인 NOS에 비해, 주성분이 생석회인 POS가 안정화에 매우 효과적이었다. 입경에 따른 안정화 효율을 분석한 결과 -#20 mesh가 -#10 mesh보다 대체적으로 좀 더 효율적이었다. 오염토양 대비 -#10 mesh POS 20% 첨가 시 습윤양생 28일 후 1N HCl 추출로 가용성 평가시 12 mg/kg으로 분석되어 토양환경보전법의`나`지역 우려기준인 20 mg/kg을 만족하였다. 그러나 -#20 mesh NOS 20% 첨가 시 같은 용출법으로 169 mg/kg로 분석되어 POS를 안정화제로 사용시 NOS보다 매우 효과적임을 알 수 있었다. SEM-EDX를 통한 비소 안정화 기작은 불용성 물질인 Ca-As 침전물에 기인한 것으로 판단되며 또한 CAHs, CSHs와 같은 포졸란 물질도 비소 농도 저감에 기여하는 것으로 사료된다. Arsenic (As) is known to be very toxic and carcinogenic to human beings. Arsenic contaminated soil was collected from a timber mill site at Busan Metropolitan City, Korea, where chromated copper arsenate (CCA) had been used to protect wood from rotting caused by insects and microbial agents. The soil was stabilized using both natural oyster shells (NOS) and calcinated oyster shells (POS). The calcination of natural oyster shells was accomplished at a high temperature in order to activate quicklime from calcite. Two different oyster shell particle sizes (-#10 mesh and -#20 mesh) and curing periods of up to 28 days were investigated. The stabilization effectiveness was evaluated based on the Korean Standard Test (KST) method (1N HCl extraction). The stabilization results showed that the POS treatment was more effective than the NOS treatment at immobilizing the As in the contaminated soils. A significant As reduction (96%) was attained upon a POS treatment at 20 wt% and passed the Korean warning standard of 20 mg/kg (`Na` area). However, an As reduction of only 47% (169 mg/kg) was achieved upon a NOS treatment at 20 wt%. The -#20 mesh oyster shells seem to perform better than the -#10 materials. The scanning electron microscopy (SEM)-energy dispersive X-ray spectroscopy (EDX) results showed that As immobilization was strongly associated with Ca and O in the presence of Al and Si.
Mixed Osteosarcoma with Metastatic Alveolar Carcinomatous Appearance in Canine Mammary Gland Tumor
Moon-Jung Goo(구문정),Il-Hwa Hong(홍일화),Jin-Kyu Park(박진규),Hai-Jie Yang(양해걸),Dong-Wei Yuan(위엔동웨이),Mi-Ran Ki,(기미란),Hye-Rim Lee(이혜림),Kyung-Sook Hong(홍경숙),Jung-Youn Han(한정연),Ok-Kyung Hwang(황옥경),Tae-Hwan Kim,( 한국생명과학회 2007 생명과학회지 Vol.17 No.12
본 증례는 개의 유선에서 발생한 골형성성의 악성 혼합 유선 종양으로 샘포의 암종성 변화를 동반하고 있다. 종양은 12년령 암캐의 좌측 5번째 유선에서 절제되었으며 직경 2~2.5㎝의 단단한 mass로 절단 시 경도가 높은 골성의 구조를 가지고 있었다. 현미경학적 관찰 시, 골유사 물질이 미네랄 침착되고 있었으며 다수의 골형성 세포와 일부 파골세포가 골생성 종양 기질 전반에 걸쳐서 관찰되었다. 이러한 골유사 병변은 높은 밀집도를 보이는 근상피 세포와 연접하고 있었으며 이러한 세포들은 수 개의 유사분열상을 나타내고 있었다. 이와 더불어, 유선세관과 샘포의 암종성 변화를 보이는 세포들이 인접 기질로 침습하고 있는 모습이 관찰되었고 이것 역시 증가된 근상피 세포들로 둘러싸여 있었다. 본 증례에서 볼 수 있는 이러한 세포들의 출현은 동시 발생된 악성 종양의 형태를 제시할 수 있으며 종양의 기원은 상피 유래의 암종성 조직과 중간엽 유래의 육종성 연골 및 골 조직으로 구별할 수 있겠다. We describe here a case of malignant mixed osteogenic tumor of the mammary gland with alveolar carcinomatous appreance. A firm, 2 to 2.5cm (in diameter) mass under the 5th nipple, showing the structure of extraosseous osteogenic sarcoma, was removed from the left 5th mammary gland of 12-year-old female dog. When investigated under the microscope, the osteoid material undergoing mineralization was surrounded by numerous scattered osteoblasts and a few osteoclastic cells throughout the osteoid tumorous stroma. The osteoid lesions were continuous with hypercellular myoepithelial cells of a very immature character with several mitotic figures. In addition, there were also carcinomatous tubules and alveoli, with invading cells into peripheral stroma, surrounded by myoepithelial cells in the mammary gland. In these lesions, emanating cords of tumor cells appear to be continuous with the myoepithelial cell layer of a duct. The presence of all these cell types suggests the existence of a common malignant origin, the stem cell being differentiated into epithelial carcinomatous and mesenchymal sarcomatous chondral and osteogenic tissues.
Synthesis of 5'-substituted fluoro-neplanocin A analogues
Moon, Hyung-Ryong,Lee, Hyun-Joo,Kim, Kyung-Ran,Lee, Kang-Man,Lee, Sang-Kook,Kim, Hea-Ok,Chun, Moon-Woo,Jeong, Lak-Shin 이화여자대학교 약학연구소 2004 藥學硏究論文集 Vol.- No.14
Four 5'-substituted fluoro-neplanocin A analogues la-d were designed and synthesized, using cyclopentenone derivative 2 as a key intermediate. The inhibitory activity against SAH was in the following order: NH₂>SH>F, N₃, indicating a hydrogen bonding donor such as OH or NH₂was essential for inhibitory activity. All the final compounds showed much less decreased cytotoxicity in two cancer cell lines(Col2 and A549), implying that phosphorylation of the 5'-hydroxyl group of fluoro-neplanocin A is closely related to its high cytotoxicity.