http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
알코올 의존 환자의 적혈구막 지질과산화 정도와 적혈구 평균 용적 및 간 효소 지표와의 관련성
정성윤,최인근,서국희,강희정,Jeong, Seong Yun,Choi, Ihn-Geun,Suh, Guk-Hee,Kang, Hee Jung 대한생물정신의학회 1998 생물정신의학 Vol.5 No.2
Objectives : Alcohol-induced oxidative stress has been known to injure various tissues or organs. This stress is related with free radicals which are produced as the result of long-term alcohol consumption. Malonyldialdehyde(MDA) is produced by the interaction of free radicals and cell membrane lipids, and indicates the degree of lipid peroxidation indirectly. The purpose of this study was to investigate the relationship between red blood cell(RBC) membrane lipid peroxidation by free radicals, and associated hepatic injuries and hematologic changes. Methods : Thirty-three subjects diagnosed as alcohol dependence according to DSM-IV diagnostic criteria were evaluated within 72 hours after discontinuing alcohol drinking. Clinical characteristics were evaluated by CAGE questionnaire and Korean Michigan Alcoholism Screening Test(MAST). RBC membrane MDA level was measured as the marker of RBC membrane lipid peroxidation. Aspartate aminotransferase(AST), alanine aminotransferase(ALT) and gamma-glutamyltransferase(GGT) were used as the biochemical markers of liver damage due to alcohol ingestion. The alcohol-induced hematologic change was assessed by mean corpuscular volume(MCV). Results : The results were as follows. Clinical characteristics were not different between two groups having normal and abnormal levels of AST, ALT, GGT or MCV. The levels of MDA were not correlated with the clinical characteristics and serum levels of AST, ALT and GGT. However, there was a significant correlation between the levels of MDA and the value of MCV(p=0.017). Conclusions : These findings suggest that oxidative stress in alcohol dependence may not be reflected in liver enzyme markers such as AST, ALT and GGT, but may be reflected in MCV.
문현석(Moon Hyoun Seok),강인석(Kang Leen Seok),정성윤(Jeong Seong Yun),곽중민(Kwak Joong Min),정원명(Jung Won Myoung) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
Application of information technology for the construction area has been processed actively with the development of information technology. In this study, a framework of the Construction Specification IETM(Interactive Electronic Technical Manual) was suggested through the analysis of the Department of Defense(DoD)"s standards and the trend of techniques related to the IETM. As the Framework, the DFD(Data Flow Diagram) of the construction specification IETM"s organizing and using procedure was suggested. And a Model of construction specification IETM was organized on the basis of DFD. Finally, a scenario was constructed by the pilot system which is based on the model. The application of the construction specification IETM would make efficient and effect task implementations possible. By that, in addition to the reduction of the cost and time, the quality enhancement from information missing protect effectiveness could be expected.
나혜숙(Hei-Sook Nah),최원식(Won-Sik Choi),정성윤(Seong-Yun Jung),서명배(Myung-Bae Seo) 한국산학기술학회 2014 한국산학기술학회 학술대회 Vol.- No.-
본 논문에서는 건설공사가 대형화, 복합화, IT융합화 되는 추세이나 중대 안전사고의 비율은 오히려 증가하고 있어 건설현장의 안전사고에 능동적이고 예방적으로 대처하기 위한 방안으로 BIM 등 첨단 정보기술을 융합한 안전관리 개념모델을 제시하였다.
초산균에 의한 환경친화적 기능성소재인 세균 셀룰로오스 생산을 위한 정치배양조건 최적화
조광식 ( Kwang Sik Cho ),이상미 ( Sang Mee Lee ),정성윤 ( Seong Yun Jeong ),박근태 ( Geun Tae Park ),이희섭 ( Hee Sup Lee ),황대연 ( Dae Youn Hwang ),정영진 ( Young Jin Jung ),손홍주 ( Hong Joo Son ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.5
Bacterial cellulose (BC) has played important role as new functional material for food industry and industrial products based on its unique properties. The interest in BC from static cultures has increased steadily in recent years because of its potential for use in medicine and cosmetics. In this study, we investigated culture condition for BC production by Acetobacter sp. F15 in static culture. The strain F15, which was isolated from decayed fruit, was selected on the basis of BC thickness. The optimal medium compositions for BC production were glucose 7%, soytone 12%, K2HPO4 0.2%, NaH2PO4ㆍ2H2O 0.2%, lactic acid 0.05% and ethanol 0.3%, respectively. The strain F15 was able to produce BC at 26℃-36℃ with a maximum at 32 ℃. BC production occurred at pH 4.5-8 with a maximum at pH 6.5. Under these conditions, a maximum BC thickness of 12.15 mm was achieved after 9 days of cultivation; this value was about 2.3-fold higher than the thickness in basic medium. Scanning electron micrographs showed that BC from the optimal medium was more compact than plant cellulose and was reticulated structure consisting of ultrafine cellulose fibrils. BC from the optimal medium was found to be of cellulose type I, the same as typical native cellulose.
수산폐기물 재활용을 위한 미더덕껍질 용매 추출물의 생리활성 탐색
이상미 ( Sang Mee Lee ),강은진 ( Eun Jin Kang ),고태훈 ( Tae Hun Go ),정성윤 ( Seong Yun Jeong ),박근태 ( Geun Tae Park ),이희섭 ( Hee Sup Lee ),황대연 ( Dae Youn Hwang ),정영진 ( Young Jin Jung ),손홍주 ( Hong Joo Son ) 한국환경과학회 2014 한국환경과학회지 Vol.23 No.1
Styela clava tunic is generated in large amounts as a waste from S. clava processing plants and causes environmental problem. Although biological activities of S. clava were reported by many investigators, study on S. clava tunic was little. In this study, therefore, tyrosinase inhibition and antioxidative activities of extracts from S. clava tunic using different solvent were investigated for recycling of the fishery waste. Among extraction methods tested, autoclaved extraction (25.7%) and hot water extraction (18.2%) appeared to be effective for extraction. The highest total phenolic content was 46.6 mg/g in autoclaved extract while the highest flavonoid content was 23.0 mg/g in chloroform extract. All extracts possessed tyrosinase inhibition activity and the inhibition activity was concentration-dependent. Inhibition concentration (IC50) against tyrosinase activity was 0.36×104 mg/ml in ethanol extract, 0.11×103 mg/ml in acetone extract and 0.27 mg/ml in n-butanol extract. Among extracts tested, hot water and autoclaved extracts displayed higher antioxidative activity than organic solvent extracts. Therefore, our data suggest that extract from S. clava tunic may potential candidate for cosmetic product with whitening effect and medicine for diseases caused by various oxidative stresses.
항MRSA (Methicillin Resistant Staphylococcus aureus) 활성을 나타내는 해양미생물의 분리
우예주 ( Ye Ju Woo ),도태웅 ( Tae Woong Do ),남예지 ( Ye Ji Nam ),안효정 ( Hyo Jung Ahn ),김미선 ( Mi -sun Kim ),전상아 ( Sang A Jeon ),정성윤 ( Seong Yun Jeong ) 대구가톨릭대학교 자연과학연구소 2011 자연과학연구논문집 Vol.9 No.1
Abstract:It was isolated marine bacterium, isolate YJ-1 which produced a bactericidal antibiotics against MRSA. This isolate was identified as tested by examining its morphological and biochemical properties, and 16S rDNA sequencing analysis for identification. This isolate YJ-1 was identified to the genus Pseudomonas. Therefore, this isolate was designated Pseudomonas sp. YJ-1. Pseudomonas sp. YJ-1. relatively grows well in the 25℃, pH 7.0, NaCl 1.0 %. For the purification of the bioactive compounds, YJ-1 was fermented in 37 L-PPES-Ⅱ medium, and culture filtrates of YJ-1 was extracted by ethyl acetate, hexane, and 80% MeOH. The 80% MeOH fraction of YJ-1 was showed the significant anti-MRSA (methicillin-resistant Staphylococcus aureus) activity against MRSA.