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이상곤,김동성,황철승,조원철,이태식,Lee. Sang-Gon,Kim. Dong-Sung,Hwang. Cheol-Seung,Cho. Won-Cheol,Lee. Tae-Shik 한국방재학회 2007 한국방재학회 학술발표대회논문집 Vol.2007 No.1
Due to the benefit of QRA(Quantitative Risk Analysis) method, we can evaluate the risk, and it helps us to make our safe. We also depend to some of correlation equations to assess the jet fire at high pressurized transmission line. However, we can evaluate the risk within limitations. After comparing the current model to investigation report of natural gas transmission line accident at EL-Paso in U.S., this study concludes that more research and study are required because currently developed model cannot expect factors of the fire risk such as flame configuration.
직접형 디지탈 주파수 합성기 동작 속도 향상을 위한 파이프라인형 위상누산기의 설계
이상곤,유흥균 ( Sang Gon Lee,Heung Gyoon Ryu ) 충북대학교 산업과학기술연구소 1994 산업과학기술연구 논문집 Vol.8 No.2
Abstract_Roman In this paper, we design the logic circuit of pipelined phase accumulator in DDFS(direct digital frequency synthesizer) with dynamic D F/F, and simulate it. The design methods of the adder and D F/F are described. To design and verify th
한국인 전신성홍반성루푸스 환자에서 HLA-DRB1, DQB1 대립유전자의 연관성 및 항인지질 항체와 항β<sub>2</sub> Glycoprotein I 항체에 관한 연구
이상곤,차훈석,양윤선,Lee, Sang Gon,Cha, Hoon Suk,Yang, Yoon Sun 대한면역학회 2002 Immune Network Vol.2 No.4
Background: Systemic lupus erythematosus (SLE) is a complex autoimmune disease characterized by diverse clinical manifestations and autoantibody production, which is known to be strongly influenced by genetic factors. Previous studies have revealed the associations of SLE with HLA class II alleles and antiphospholipid antibody system (anticardiolipin antibody (aCL) and anti-${\beta}_2$ glycoprotein I antibody (anti-${\beta}_2$ GPI)). Therefore, we studied the associations of HLA class II alleles with SLE and antiphospholipid antibody system. Methods: The genotyping for HLA-DRB1 and DQB1 alleles were performed in 61 SLE patients and 100 controls by the polymerase chain reaction (PCR)-sequence specific oligonucleotide probe method. ELISA tests for aCL and anti-${\beta}_2$ GPI were performed in 39 of the 61 SLE patients. The results were evaluated statistically by Chi-square test. Results: The frequencies of the HLA-$DRB1^*15$ and $DQB1^*06$ in SLE patients were significantly higher than those in controls. HLA-$DRB1^*12$ was significantly lower in SLE patients than controls. Nine of 39 patients were positive for aCL (IgG) and three were positive for aCL (IgM). One of 39 patients were positive for anti-${\beta}_2$ GPI (IgG) and none of them positive for anti-${\beta}_2$ GPI (IgM). Association of aCL with HLA class II alleles was not observed in our study. Conclusion: According to our results, it was found that HLA-$DRB1^*15$ and $DQB1^*06$ were associated with genetic susceptiblility and $DRB1^*12$ was associated with resistance to SLE in Korean population. No Association of aCL with HLA class II alleles was observed and the positive rate for anti-${\beta}_2$ GPI was very low.