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3 results on '"Sang-Heon Lee"'

2. Magnetic suspension force of AgO doped BiPbSrCaCuO superconductor

Author

Sang Heon Lee

Subjects
Superconductors -- Research, Magnetic suspension -- Research, Magnetic flux -- Research, Silver alloys -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Focusing on the suspension of field cooled BiPbSrCaCuO high T(sub c) superconductor of 2%Ag2O doped samples under a torodical permanent magnet is studied. The suspension work observed only for the 2%Ag2O doped sample and held the coolest sample which is attributed to the enhanced flux pinning effect due to the field cooled condition.

Published
2003

3. Predominance of HLA-DRB1*0405 in Korean patients with rheumatoid arthritis

Author

Ho-Youn Kim, Tai-Gyu Kim, Sung-Hwan Park, Sang-Heon Lee, Chul-Soo Cho, and Hoon Han

Subjects
Rheumatoid arthritis -- Genetic aspects, Koreans -- Health aspects, HLA class II antigens -- Physiological aspects, Health
Abstract

Korean rheumatoid arthritis patients may be more likely to have the gene HLA-DR4 than other ethnic groups. Researchers analyzed the presence of HLA-DR blood antigens in 95 Korean patients with rheumatoid arthritis (RA) and in 118 Koreans without RA. The gene fragment DRB1*0405 correlated significantly with RA, a finding that has previously been found among Japanese, Singaporean Chinese, and southern Chinese RA patients. The prevalence pattern of HLA-DR4 gene fragments in Korean patients with RA differed from the pattern found among Caucasian patients. Korean patients also had the amino acid sequence QRRAA on DRB1 gene fragment molecules, which may be associated with a predisposition to RA.

Published
1995

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