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시나리오 플래닝을 활용한 설계VE 제안의 가치평가 모델 개발
이환철(Lee Hwan-Cheol),현창택(Hyun Chang-Taek),손명진(Son Myung-Jin),지성민(Ji Soung-Min) 대한건축학회 2011 大韓建築學會論文集 : 構造系 Vol.27 No.4
After the VE analysis method has been applied to domestic construction industry, the design VE proposal was carried out to design related to various facilities. In this VE activities, The two key elements to elicit these VE proposals are 'Function' and 'Cost' which are needed in assessing grade of VE's value. However, when it is hard to calculate the money that is connected to existing or improved one, not only owner can't measure the proposals of the VE's value due to it is not available to calculate the quantitative value that is related to the 'Cost' but also it could be an impedimental cause when users make a decision. Therefore, in this study sought a plan what could take out the quantitative figures that is related to the 'Cost' and suggested the way to calculate the 'Cost'. Before developing a model of evaluation value, I has understood the type of suggestion of VE which are difficult to estimate the cost of the first construction and improved 3 scenarios using with the techniques of analyzed classes and scenario planning. And adapted rating step process with the improved scenarios then developed the model of evaluating value. Furthermore, I applied example projects to examine the developed the model of evaluating value's applicability. Plus, I investigated a possibility of applicability on the field through VE experts' interview survey. The model of evaluating value using the developed scenarios in this study gave a direction to calculate the cost that is difficult to calculate. Also I expect that it would be available to perform systematic and rational decision making.
COX-2 억제제 투여 후 호전을 보인 가족성 선종성 용종증 1례
오기원,김세영,이환석,이명훈,최병호,Oh, Ki Won,Kim, Se Young,Lee, Hwan Suk,Lee, Myung Hoon,Choe, Byung Ho 대한소아청소년과학회 2002 Clinical and Experimental Pediatrics (CEP) Vol.45 No.12
Familial adenomatous polyposis(FAP) is an autosomal dominant disease characterized by numerous adenomas in the colorectum. Patients with FAP are always at risk of malignant transformation, so that colectomy is unavoidable. NSAID, such as sulindac, and selective COX-2 inhibitor, such as celecoxib, have shown a positive effect on FAP by causing polyp regression in some patients. We report a case of FAP in a 9-year-old female whose polyposis regressed markedly after six months-treatment with celecoxib. 가족성 선종성 용종증은 전 대장에 수백개 이상의 용종들이 발생하는 유전성 질환으로, 예방적 대장절제술을 시행하지 않으면 거의 100%에서 대장암으로 악성화 한다. NSAID와 선택적 COX-2 억제제가 용종의 퇴행을 유발하는데 효과가 있는 것으로 알려져 있다. 저자들은 9년 5개월 여아에서 FAP로 진단받고 6개월간 선택적 COX-2 억제제인 celecoxib를 투여한 후 증상이 소실되고 양호한 성장을 보였을 뿐만 아니라 용종의 수와 크기도 현저하게 감소한 1례를 경험하였기에 보고하는 바이다.
복합용도개발사업의 기획/계획단계 CBS Organization Tool 개발
현창택(Hyun Chang-Taek),홍태훈(Hong Tae-Hoon),손명진(Son Myung-Jin),이환철(Lee Hwan-Cheol),하승룡(Ha Seung-Ryoung) 대한건축학회 2009 大韓建築學會論文集 : 構造系 Vol.25 No.8
Recently, Mixed Used Development projects of Mega-Project scale is being conducted internally and externally. Mega-Project is not a concept of project level but it consists of program level that many facilities are organically connected. Thus, it presents characteristics which are complexity and large scale. Regarding these characteristics, a management system which can control design changes and risks of Mega-Project, is required. Therefore, this study proposes the Cost Breakdown Structure (CBS) Organization Tool system based on UCC (User Created Contents). It is made by users to support accurate construction cost predicting and management at the planning phase of Mega-Project. The CBS Organization Tool is developed on the basis of the CBS Template that can visually support the CBS Library and the breakdown structure. After that, effectiveness of the system and propriety of developed cost items were examined through actual examples and specialists' consultation. The CBS Organization Tool may be helpful to owners and users when they make a CBS model faster and more exactly for Mega-Project scale projects.
김치로부터 분리한 Leuconostoc citreum GR1의 마우스에 대한 급성독성
이환 ( Hwan Lee ),차선숙 ( Seon Suk Cha ),이명렬 ( Myung Yul Lee ),장해춘 ( Hae Choon Chang ),이재준 ( Jae Joon Lee ) 한국식품저장유통학회(구 한국농산물저장유통학회) 2013 한국식품저장유통학회지 Vol.20 No.1
The present study was carried out to investigate the in vivo single-dose toxicity of Leuconostoc citreum GR1 , a ;actic acid bacteria isolated from kimchi, in ICR male and female mice. The test article was orallly adminisyered once to both sexes of mice. The mortalities, clinical findings, autopsy findings, and body weight changes were monitored daily for two weeks. The male and female mice were gavaged with Leuc. kimchi GRI of four doses. The oral LDso of Leuc. citreum GRI was considered higher than 5,000 mg/kg. Nosignificant changes in the general conditions, body weights, clinical signs and presence of gross lesions were boserved in both sexes of mice to whom Leuc. cireum GRI was administered orally. The results indicated that the 5,000 mg/kg dose of Leuc. citreum GRI showed no adverse effect.
Latobacillus plantarum AF1이 생성한 조항진균 물질의 흰쥐에 대한 반복투여독성
이환 ( Hwan Lee Myung ),이명렬 ( Yul Lee Hae ),장해춘 ( Choon Chang Jae ),이재준 ( Joon Lee ) 한국식품저장유통학회(구 한국농산물저장유통학회) 2013 한국식품저장유통학회지 Vol.20 No.3
본 연구는 김치산막효모억제 유산균인 Lb. plantarum AF1이 생산한 조항진균 물질 부분 정제물을 SD계통의 흰쥐에게 4주간 반복 경구투여를 통하여 장기투여에 의한 안전성을 확인하였다. 암·수 흰쥐에 Lb. plantarum AF1이 생산한 조항진균 물질 부분 정제물을 0, 500, 1,000 및 2,000mg/kg/day의 용량으로 4주간 반복 경구투여한 후 사망률, 일반증상, 체중변화, 사료섭취량, 수분섭취량, 부검소견, 장기무게 변화, 혈액학적, 혈액생화학적 및 병리조직학적 검사를 실시하였다. 모든 시험군에서 전 시험기간 시험물질로 인한 임상증상 및 사망동물이 관찰되지 않았다. Lb. plantarum AF1이 생산한 조항진균 물질 부분 정제물의 경구투여 결과 체중이 4주간 지속적으로 증가되었지만 대조군과 유의성 있는 변화가 없었다. 또한 장기의 육안적 관찰, 장기 중량변화,혈액학적, 혈액생화학적 및 병리조직학적 검사에서도 모든 시험물질 투여군이 대조군과 유의성이 있는 차이를 보이지 않았으며, 모두 정상 범위의 수치로 시험물질에 기인하는 이상 소견을 발견할 수 없었다. 이상의 결과 4주 반복투여 독성시험 결과 Lb. plantarum AF1이 생산한 조항진균 물질 부분 정제물은 저독성의 안전한 물질로 판정되었다. This study was performed to investigate the four-week repeated-dose toxicity of the crude antifungal compounds produced by Lactobacillus plantarum AF1 (Lb. plantarum AF1), a lactic acid bacterium isolated from kimchi, in male and female rats. Sprague-Dawley male and female rats were divided into four groups, with 10 animals in each group. The test article was administered once daily by gavage to rats at dosage levels of 0, 500, 1,000, and 2,000 mg/kg/day for four weeks. There were no test-article-related deaths or abnormal clinical signs in both the male and female rats during the observation period. Furthermore, no differences in the body weight changes, food intake and water consumption levels of the control and treatment groups were found. The hematological parameters, serum biochemical analysis results, histopathological examination results and all other findings also showed no significant or dose-dependent changes. There were also no changes in the organ weights upon the administration of the crude antifungal compounds produced by Lb. plantarum AF1. These results suggest that the oral administration of the crude antifungal compounds produced by Lb. plantarum AF1 had no adverse effects up to a dosage level of 2,000 mg/kg in both male and female rats.
김치로부터 분리한 Lactobacillus plantarum AF1의 마우스에 대한 급성독성
이환 ( Hwan Lee ),이재준 ( Jae Joon Lee ),장해춘 ( Hae Choon Chang ),이명렬 ( Myung Yul Lee ) 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2012 한국식품저장유통학회지 Vol.19 No.2
The in vivo single-dose acute toxicity of Lactobacillus plantarum AF1, a lactic acid bacterium isolated from kimchi, in ICR male and female mice was investigated. The test article was intraperitoneally or orally administered once to both sexes of mice. The motalites, clinical findings, autopsy findings, and body weight changes were monitored daily for 14 days. In the oral acute toxicity test, the male and female mice were gavaged with four doses (5.0, 2.5, 1.25 and 0.625 g/kg) of Lb. plantarum AF1. The oral LD50 of the Lb. plantarum AF1 was considered higher than 5.0 g/kg. In the intraperitoneal acute toxicity test, mice were injected intraperitoneally with dosages of 0.7, 0.9, 1.1, 1.3, 1.5, 1.7, 1.9, 2.1, 2.3 and 2.5 g/kg. The intraperitoneal 50% lethal dose (LD50) of the Lb. plantarum AF1 was >2.5 g/kg in the male and female mice. No significant changes in the general conditions, body weights, clinical signs, and gross lesions were observed in both sexes of mice to which Lb. plantarum AF1 was administered intraperitoneally or orally. The results suggest that the no-adverse-effect level of Lb. plantarum AF1 is estimated to be more than 5.0 g/kg in the oral route and 2.5 g/kg in the intraperitoneal route.