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Choi, Kyung-Chul,Oh, So-Young,Kang, Hee-Bum,Lee, Yoo-Hyun,Haam, Seungjoo,Kim, Ha-Il,Kim, Kunhong,Ahn, Young-Ho,Kim, Kyung-Sup,Yoon, Ho-Geun Biochemical Society 2008 Biochemical journal Vol.411 No.1
<P>A central issue in mediating repression by nuclear hormone receptors is the distinct or redundant function between co-repressors N-CoR (nuclear receptor co-repressor) and SMRT (silencing mediator of retinoid and thyroid hormone receptor). To address the functional relationship between SMRT and N-CoR in TR (thyroid hormone receptor)-mediated repression, we have identified multiple TR target genes, including BCL3 (B-cell lymphoma 3-encoded protein), Spot14 (thyroid hormone-inducible hepatic protein), FAS (fatty acid synthase), and ADRB2 (beta-adrenergic receptor 2). We demonstrated that siRNA (small interfering RNA) treatment against either N-CoR or SMRT is sufficient for the de-repression of multiple TR target genes. By the combination of sequence mining and physical association as determined by ChIP (chromatin immunoprecipitation) assays, we mapped the putative TREs (thyroid hormone response elements) in BCL3, Spot14, FAS and ADRB2 genes. Our data clearly show that SMRT and N-CoR are independently recruited to various TR target genes. We also present evidence that overexpression of N-CoR can restore repression of endogenous genes after knocking down SMRT. Finally, unliganded, co-repressor-free TR is defective in repression and interacts with a co-activator, p300. Collectively, these results suggest that both SMRT and N-CoR are limited in cells and that knocking down either of them results in co-repressor-free TR and consequently de-repression of TR target genes.</P>
Biofilter 를 이용한 VOC 처리특성 및 미생물 첨가에 의한 영향 연구
김종화,김소영,김우식,김응빈,김승수,김빈,함승주 한국공업화학회 1999 응용화학 Vol.3 No.1
The removal effects of VOC vapors in a pilot-scale biofilter have been studied. Biofiltration test was performed in a biofilter fed downward with contaminated air at ambient conditions. The biofilter was packed with the bark of a tree(1∼2 ㎝ size). The biofilter was operated under various inlet-airstream benzene concentrations. The flow-rate and temperature in the biofilter were 0.398 L/min., 5∼15℃, respectively. We investigated the removal efficiency variation of benzene with different concentrations were changed. Also, we studied the effects of VOC treatment when microorganisms (Pseudomonas) was added to the biofilter. The results showed that the removal efficiency was fairly improved by addition of microorganisms.
생물화공 , 에너지 / 환경 : Biofilter 를 이용한 VOC 처리 특성 및 미생물 첨가에 의한 영향
김승수(Seung Su Kim),박대원(Dae Won Park),김소영(So Young Kim),김종화(Jong Hwa Kim),함승주(Seung Joo Haam),김응빈(Eung Bin Kim),김우식(Woo Sik Kim) 한국화학공학회 2001 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.39 No.3
In this study, the degradation of toluene by lab-scale biofilter inoculated with pseudomonas putida DK-1 was investigated with variation of the several environmental parameters, such as temperature, bed length, residence time (gas flow rate), concentration and optimal humidity zone. Removal efficiency increased as the operating temperature increased and the optimal temperature range to treat toluene gas was found to be 32-35℃. The effect of gas flow rate on toluene degradation was investigated at different gas flow rates of 20-100 ㎖/min. Increasing the gas flow rate showed an inverse effect on the elimination rate (ER) and the removal efficiency (RE). The removal efficiency was roughly constant and consequently the biodegradation rate was independent of concentration of toluene at the inlet load lower than 251 g/㎥. The optimal humidity dominance zone (40-60%) increased as bed length increased. The biodegradation rate of the toluene with respect to the bed length (3, 6, 9, 12 and 15 ㎝) increased up to 80 h but was then independent of the bed length after 80 h except for the 3 ㎝ bed length.
Electric Field Control of Nonvolatile Four-state Magnetization at Room Temperature
Sae Hwan Chun,Yi Sheng Chai,Byung-Gu Jeon,Hyung Joon Kim,Yoon Seok Oh,Ingyu Kim,Hanbit Kim,Byeong Jo Jeon,So Young Haam,Ju-Young Park,Suk Ho Lee,Kee Hoon Kim,Jae-Ho Chung,Jae-Hoon Park 한국자기학회 2012 한국자기학회 학술연구발표회 논문개요집 Vol.2012 No.5