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조학현,임장섭 木浦海洋大學校 1998 論文集 Vol.6 No.1
This paper presents a study of new Al technique based partial discharge (PD) pattern classifier to power system application. After referring briefly to the developments of artificial neural network and diagnosis system theory based PD measurements, the paper outlines how the introduction of new emerging technology, namely chaos and fractal engineering methodologies has resulted in the design of a number of PD diagnostic systems for practical application of residual lifetime prediction. For an experimental study an appropriate PD database structure and selection of learning data size of PD pattern based on (semi)fractal dimension are introduced, and 3-D PD-normalization, extraction of relevant characteristic feature of a PD model are discussed. Some practical aspects encountered with unknown stress in the neural network techniques based real time PD recognition are also addressed.
Lim, Hak-Seob,Kim, Moo-Sang,Kim, Ok-Soon,Kim, Ji-Yeon,Choi, Young-Mi,Ahn, Sang Jung,Lee, Hyung-Ho The Korean Society for Marine Biotechnology 2006 한국해양바이오학회지 Vol.1 No.3
짧은 집단 반복 요소 (Short Interspersed Repetitive Elements, SINE) 는 수백개 정도의 염기로 구성된 반복염기서열로서 LINE (Long Interspersed Nucleotide Elements)와 함께 바이러스와는 구별되는 레트로트랜스포존 (Retrotransposon)의 하나로 알려져 있다. 이들의 생체 내 역할은 정확하게 밝혀진 것은 없지만 게놈 내에서 반복염기서열의 재배열을 통해 완전히 새로운 유전자를 창조하거나 기존의 유전자를 변형시킴으로써 유전물질의 운반수단 및 진화적 변화에 있어서 중요한 역할을 할 것이라 예상되며, 질병의 원인이 된다고도 밝혀져 있다. 본 연구에서는 미꾸라지로부터 SINE의 새로운 두 그룹을 분리하였다. 두 SINE 그룹, mlSINE-L과 mlSINE-S는 각각 약 410bp와 270bp의 염기로 구성되어 있다. 두 SINE 그룹의 5'과 3'말단의 서열은 RSg-1와 SmaI SINE 의 그것과 높은 유사도를 보였다. 계통발생분석결과, mlSINE들은 미꾸라지에서 유일하였으며, dot blot hybridization의 결과는 mlSINE-L이 미꾸라지 게놈 $2{\times}10^9bp$ (2.8 pg)당 $1{\times}10^3$ copy를 가지는 것으로 추정되며, loop DNA보다 핵기질부착부위 (nuclear matrix attachment regions, MARs)에서 그 분포도가 높았다. 이런 결과는 미꾸라지의 새로운 SINE 들이 핵기질 부착부위 내에서나 혹은 가까운 주변에 우선적으로 삽입될 수 있음을 나타낸다. Short interspersed repetitive elements (SINEs) are dispersed throughout eukaryotic genomes. These SINEs have been shown to be excellent phylogenetic markers for the closed related species. In this report, we isolated two novel families of SINEs from the mud loach. The two SINE families, mlSINE-L and mlSINE-S, have genomic lengths of about 410bp and 270bp, respectively. 5' and 3' ends of the SINE families are well conserved and highly homologous to each of corresponding ends of RSg-1 and SmaI SINEs. Phylogenetic analysis shows that mlSINEs are unique to the mud loach. A dot blot hybridization experiment shows that mlSINE-L has an estimated copy number of $1{\times}10^3$ per $2{\times}10^9bp$ (2.8 pg) and is more frequently distributed at nuclear matrix attachment regions (MARs) than loop DNAs. The result suggests that mlSINEs may preferentially integrate in or near MARs.
Molecular Cloning and Characterization of ARS Elements from the Mud Loach (Misgurnus mizolepis)
Hak-Seob Lim,Moo-Sang Kim,Jin-Young Park,Kang-Eun Choi,Jee-Youn Hwang,DongSoo Kim 한국분자세포생물학회 2002 Molecules and cells Vol.13 No.2
Autonomously replicating sequences (ARSs) are thought to occur within, or adjacent to, the matrix attachment regions (MARs). To identify fish ARSs, MARs of the mud loach fish were obtained from nuclear matrices using a modified LIS method. These DNA fragments were screened for their ability to act as ARSs by being cloned into the ARS cloning vector, pURY19, and transformed into Saccharomyces cerevisiae. Sixteen ARSs were isolated, most of which were more efficient in transformation than the positive control vector, pURY19-2 μm, which contained the 2 μm circle origin of yeast. In particular, one clone, pURY19- ARS223, was 18 times more efficient in back-transforming E. coli than the positive control vector. Therefore, ARS223, which has strong ARS activity in yeast, could be a good candidate for inclusion in expression vehicles that are used to transfect fish cell lines or embryos. A DNA sequence analysis showed that the essential ARS elements contain potential ARS consensus sequences, and are predicted to have hairpin loop structures, or curved or kinked DNA. In addition, the MAR-Finder program suggested that ARSs also contain MAR motifs. These include AT tracts, ORI patterns, kinked DNA, ATC tracts, and Topoisomerase II consensus sequences. The in vitro matrix binding assay confirmed that all of the cloned ARSs could associate with the nuclear matrix. This indicates that ARSs elements may be located in or near the MARs. This is the first study that has identified and characterized ARSs in fish.
Development of traditional wine using biomass from alcoholic fermentation by Phellinus sp. mycelium
Hak-Seob Lim,Gang-Young Lee,Eun-Jung Jung,Won-Su Lee,Young-Kwang Ju,Min-Jeong Seo,Ji-Eun Kim,Tae-Yeon Kim,Hey-Rin Lee,Kyung Tae Chung,Byung Tae Choi,Young Hee Kim,Yong Kee Jeong 한국생명과학회 2006 한국생명과학회 심포지움 Vol.47 No.-
Lim, Hak-Seob,Park, Jin-Young,Hwnag, Jee-Hwang,Kim, Moo-Sang,Lee, Hyung-Ho The Korean Society of Fisheries and Aquatic Scienc 2000 韓國養殖學會誌 Vol.13 No.1
In previously study we isolated several fish matrix attachment regions (MARs) capable of replicating the plasmid by itself. In this study we construct a fish expression vector pBaEGFP(+) containing mud loach ${\beta}$-actin promoter EGFP as reporter gene and SV40 signal. To analyze the effects of the fish expression vector respectively. The fish ARS containing constructs pBaEGFP(+)-ARSs were transfected cells with pBaEGFP(+)-ARS101 and pBaEGFP(+)-ARS223 reduced 10 days to 25 days and then was constant to 30 days after transfection while that of the control vector without ARS element was basal level. The intensity of both constructs showed about 30fold of the intensity compared with the control vector on 30days after transfection individually .E. coli back-transformation analysis shows that pBaEGFP(+)-ARS223 and pBaEGFP(+)-ARS905 maintain in episomal state at least 30 days after transfection. The result indicates that both may be able to replicate the vector in BF-2 cell. Therefore the matrix-attached ARSs enhancing expression of the reporter gene might be useful as a component o the expression vector for transgenic studies.