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김상곤,이진석,배환희,김정태,손범영,백성범,Kim, Sang Gon,Lee, Jin-Seok,Bae, Hwan Hee,Kim, Jung-Tae,Son, Beom-Young,Baek, Seong-Bum 한국초지조사료학회 2017 한국초지조사료학회지 Vol.37 No.2
옥수수 품종판별 마커 개발을 위하여 SNAP 방법을 변형하여 2bp 불일치 SNP PCR 방법을 옥수수 품종판별에 적용하였다. SNP 마커개발을 위하여 MaizeGDB 웹사이트(www.maizegdb.org)를 통해서 200 SNP 위치를 확인하였으며, 표준맵으로 알려진 B73 옥수수 게놈서열을 바탕으로 2bp 불일치 Primer을 디자인하였다. PCR 생성물은 200-500bp 사이에서 결정되었으며 SNP site가 있을시 PCR 생성물이 생성되지 않게 디자인 되었다. 선행연구에서 선발된 16개의 Primer조합을 이용해서 농촌진흥청에서 개발된 사료용 옥수수 10품종(강다옥, 광평옥, 다평옥, 안다옥, 양안옥, 신광옥, 장다옥, 청다옥, 평광옥, 평안옥)과 수입 사료용 옥수수 40품종과의 판별 가능성을 검정하였다. SNP PCR 결과를 바탕으로 한 Cluster분석에서 신광옥과 PI1395 그리고 몇몇 수입 사료용 옥수수를 제외하고는 모두 판별 가능한 것으로 검정되었다. SNP 통한 품종판별 최소조합수를 선발한 결과 강다옥은 IBM911과 IBM1798, 장다옥은 IBM440과 IBM549, 평강옥은 IBM440과 IBM1269, 평안옥은 IBM795와 IBM1601였다. 이는 SNP 마커 개발을 통해 빠르고, 손쉽게 품종판별이 가능한 마커로 활용가능하다는 것을 보여준다. Single nucleotide polymorphisms (SNP) markers allow rapid screening of crop varieties in early growth stages. We developed a modified SNP PCR procedure for assaying SNPs in maize. For SNP marker development, we chosen 200 SNP sites from MaizeGDB database, and designed two base pair mismatch primers based on putative SNP site of B73 genome sequence. PCR products size was from 200 to 500 bp or was not shown in the case of SNP site existing in Korean silage corns. Using previously discovered 16 primer sets, we investigated distinctness of 50 silage F1 hybrid corns including 10 Korean silage corns developed by RDA such as Gangdaok, Kwangpyeongok, Dapyeongok, Andaok, Yanganok, Singwangok, Jangdaok, Cheongdaok, Pyeonggangok, and Pyeonganok as well as 40 foreign commercial silage corns. From cluster analysis, we confirmed that 10 Korean silage F1 hybrid corns were clearly distinguished except for Singwangok, P1395, and several foreign commercial corns, and selected minimum SNP primer combination for Gangdaok, Jangdaok, Pyeonggangok, and Pyeonganok. Therefore, development of SNP marker sets might be faster, cheaper, and feasible breed discrimination method through simple PCR and agarose gel electrophoresis.
담수과정에서 동적 영역 병합과 분수령선을 결정하는 개선된 분수령 알고리즘
김상곤,전대성,이재도,김휘원,윤영우,Kim, Sang-Gon,Jeoune, Dae-Seong,Lee, Jae-Do,Kim, Hwi-Won,Yoon, Young-Woo 대한전자공학회 2001 電子工學會論文誌-CI (Computer and Information) Vol.38 No.6
본 논문에서는 공간적 영상분할을 수행할 때 기존의 watershed 알고리즘과 그것의 수정 알고리즘에서 발생하는 과분할 문제를 해결하기 위한 개선된 watershed 알고리즘을 제안한다. 제안된 알고리즘의 주요 개념은 담수 단계에서 임계치보다 얄은 집수분지를 더 깊은 인접 집수분지에 병합하는 것이다. 따라서, 담수가 진행되는 과정에서 기존의 집수분지의 성장과 새로 담수가 일어나는 집수분지에 대한 추출이 이루어진다. 논문의 후반부에 몇 가지 MPEG 시험 영상을 사용하여 실험한 결과를 제시한다. 결론적으로, 제안된 알고리즘은 기존의 watershed 알고리즘에 아주 작은 계산시간을 추가함으혹서 적용된 임계치에 따라 좋은 분할결괴를 나타낸다. In this paper, we propose an improved watershed algorithm that resolves the oversegmentation problem shown in the previous watershed algorithm and its modifications when the spatial video segmentation is performed. The principal idea of the proposed algorithm is merging the shallow catchment basin whose depth is less than a given threshold into the deeper one during flooding step. In the flooding process, the growth of the existing catchment basins and the extraction of newly flooded ones are accomplished. We present the experimental results using several MPEG test sequences in the last part of the paper. As a consequence, the proposed algorithm shows good segmentation results according to the thresholds applied by adding very small amount of calculations.
심근 손상에 있어서 심근 Troponin - T 측정의 유용성
김상곤(Sang Gon Kim),이성욱(Sung Wook Lee),김병철(Byeong Cheol Kim),이혁(Hyuck Lee),배상문(Sang Moon Bae),안원석(Won Suk An),도현국(Hyun Kuk Dho),김무현(Moo Hyun Kim),김영대(Young Dae Kim),김종성(Jong Seong Kim) 대한내과학회 1997 대한내과학회지 Vol.52 No.6
Objectives: In coronary arterial disease, quantitative assessment of the extent of myocardial damage is important both in management of the patient and prediction of prognosis. Measurement of serum Troponin-T is a new method for detecting myocardial cellular injury, used as more specific marker of tissue damage and reperfusion status in acute myocardial infarction, This study was performed to evaluate the significance of serum Troponin-T measurement in various acute chest pain syndrome. Methods: 37 patients who presented anterior ischemic chest pain enrolled from April, 1994 to September, 1995, From the initial period of admission, serial measurements of serum level of cardiac enzymes (CK, CK MB, Myoglobin, Troponin-T) were made. Then release time, peak time and normalization time of each enzyme were derived and compared each other. To evaluate whether Troponin-T level can reflect the extent of ischemic injury, correlation between peak Troponin-T level and peak CK MB level was analysed by regression method. Results: 1) Acute myocardial infarction was confirmed in 15 cases; Q-wave myocardial infarction was 10 cases(anterior wall-5 cases, inferior wall-4 cases, lateral wall-1 cases), and non Q-wave myocardial infarction was 5 cases. Unstable angina was 22 cases. All cases had significant stenosis in coronary angiography. 2) The appearance in the serum level of 4 cardiac enzymes was as follows. The release time(hours) of 4 cardiac enzymes(Troponin-T, CK, CK MB, Myoglobin) were 7.1(1-30), 9.3(1-30), 9.9(1-30), 6.2(1-30). The peak time(hours) of 4 cardiac enzymes were 23.0(1.5-96), 21.6(2-66), 16.9(2-42), 12.7(3-40). The normalization time(hours) of the enzymes were over 72, 53.7(11-86), 52.3(11-94), 32.3(10-82). 3) Elevation pattern of cardiac enzymes showed concordance of all 3 enzymes(Troponin-T, CK MB, Myoglobin) in 29 of 43 cases(67.4%), There was concordance of 2 enzymes in 10 cases; 5 cases of CK MB and Myoglobin, 5 cases of Troponin-T and Myoglobin. In 4 cases, only Myoglobin level was in- creased. 4) There was significant correlation between peak Troponin-T level and peak CK level(r=0.66, p=0.0178), significant correlation was also observed between peak Troponin-T level and peak CK MR level(r=0.90, p=0.0001). Conclusion: In acute myocardial infarction serum Troponin-T was detectable as early as CK MB, and lasted longer after other enzyme level was normalized. There was significant correlation between peak Troponin-T level and peak CK, CK MB level, suggesting Troponin-T as useful marker for assessing the extent of myocardial damage.
산화 열처리법에 의해 제작된 산화 몰리브데늄 박막의 표면특성 고찰
김상곤(Sang-Gon Kim),성열문(Youl-Moon Sung) 한국조명·전기설비학회 2014 조명·전기설비학회논문지 Vol.28 No.3
In this work, molybdenum oxide films were fabricated by heat-treatment method. Fundamental surface characteristics of molybdenum oxide films were investigated using XRD and Raman spectroscopy. From the results, the optimum MoOx films could be obtained under the conditions of thermal treatment temperature of 550℃, oxidation time of 30 minutes and oxygen flow rate of 250sccm. The thermal treatment method offers a simple and effective route for the synthesis of uniform MoO₃ films.