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포르말린에 의한 급성 부식성 위염에 병발한 급성 봉와직염성 위염 2 예
이상수,김현수,이광훈,이재갑,장우익,권상옥,이동기,김호근,홍인수,조휘율,오미희,윤광수 대한내과학회 1991 대한내과학회지 Vol.40 No.2
Phlegmonous gastritis is a rare form of gastritis caused by a pus-forming bacterial infection of the wall of the stomach. Emphysematous gastritis is an unusual variant of phlegmonous gastritis caused by gasforming organisms. Two cases of phlegmonous gastritis subsequent to accidental ingestion of formalin is reported. One case showed bubble air in the gastric wall on plain abdominal X-ray, UGI barium study and abdominal C-T scan suggestive of emphysematous gastritis. Fiberoptic gastroscopy showed foul odor purulent discharge in the gastric lumen and diffuse ulcerative lesion from cardioesophageal junction to pylorus. Culture of gastric aspirates grew E. coli. Total gastrectomy with esophagojejunostomy, feeding jejunostomy, and pus evacuation with drainage from left paracolic gutter were performed. This patient was died on hospital 46 day. Another patient showed similar endoscopic finding to the first patient. Culture of gastric aspirate grew Pseudomonas aerugionsa. This patient was improved with intensive antibiotics. He returned to our hospital because of progression of dysphagia. UGI films and gastroscopic findings showed marked narrowing of gastric lumen. He was transferred to another hospital for proper surgery.
권오열,문인수 서울産業大學校 1999 논문집 Vol.50 No.2
Two air quality models, ISCLT3 and CDM2, are inter-compared by the analysis of computer program algorithms and modeling results of Seoul Metropolitan Area. Two models use almost similar algorithm such as Gaussian type plume dispersion, meteorological consideration, plume buoyance effect etc.. The main difference is that ISCLT3 includes the rolling terrain effect but CDM2 does not. Model results of Seoul Metropolitan Area in 1996 showed that the ISCLT3 result was much closer to the measured result(under control of Seoul City Government and Han-River Environmental Management Office) than the CDM2 result in terms of the Relative Error and Root Mean Square Error(RMSE) The Average Relative Error of ISCLT3 was -4.15% while that of CDM2 was -64.48%. Therefore ISCLT3 is believed to be a better option in air quality modeling of Seoul Metropolitan Area which is composed of rolling terrains.
User friendly molecular breeding platform by analyzing soybean genomes
Yul Ho Kim,Tae-Young Hwang,Hyang Mi Park,Seuk Ki Lee,Man Soo Choi,Kwang Ho Jeong,Min Jung Seo,Hong Tai Yun,Sun Lim Kim,Young-Up Kwon,Ik-Young Choi,Ho-Sung Yoon,Suk-Ha Lee,Jong Bhak,Sunghoon Lee 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07
Resequencing data is actively used for searching QTL or analyzing genetic diversity in the crops. However, the complexity of genome, caused by genome duplication, limits the utility of genome-wide association studies and linkage analyses to identify genes that regulate agronomically valuable traits. Here, we propose a comparative genomics approach based on core or common variation-based recombination blocks (CRB) using single nucleotide variation (SNV) density information. We found that the soybean genomes are assembled with long and distinct CRBs as large as 10Mb. CRB-based comparative genomics enabled us to accurately identify recombination blocks at the whole-chromosome level. We identified the Ih locus that determines the yellow hilum color in soybeans using CRB-based mapping with representative indel markers. These results suggest that the CRB-based comparison method is a promising platform for molecular breeding and map-based cloning.
A variant block-based comparative genomics method for the detection of functional loci in soybeans
Yul Ho Kim,Tae-Young Hwang,Hyang Mi Park,Seuk Ki Lee,Man Soo Choi,Seung woo Hwang,Kwang Ho Jeong,Min Jung Seo,Hong Tai Yun,Sun Lim Kim,Young-Up Kwon,Ho-Sung Yoon,Suk-Ha Lee,JongBhak,Sunghoon Lee 한국육종학회 2013 한국육종학회 심포지엄 Vol.2013 No.07
Although much effort has been made to find agronomically important loci in the soybean plant, extensive linkage disequilibrium and genome duplication have limited efficient genome-wide linkage analyses that can identify important regulatory genes. In this respect, recombination block-based analysis of cultivated plant genomes is a potential critical step for molecular breeding and target locus screening. We propose a new three-step method of detecting recombination blocks and comparative genomics of bred cultivars. It utilizes typical reshuffling features of their genomes, which have been generated by the recombination processes of breeding ancestral genomes. To begin with, mutations were detected by comparing genomes to a reference genome. Next, sequence blocks were examined for likenesses and difference with respect to the reference genome. The boundaries between the blocks were taken as recombination sites. All recombination sites found in the cultivar set were used to split the genomes, and the resulting sequence fragments were named as core recombination blocks (CRBs). Finally, the genomes were compared at the CRB level, instead of at the sequence level. In the genomes of the five Korean soybean cultivars used, the CRB-based comparative genomics method produced long and distinct CRBs that are as large as 22.9 Mb. We also demonstrated efficiency in detecting functionally useful target loci by using indel markers, each of which represents a CRB. We further showed that the CRB method is generally applicable to both monocot and dicot crops, by analyzing publicly available genomes of 31 soybeans and 23 rice accessions.
청주시지역 환경오염에 관한 기초 조사 : 대기오염을 중심으로 On the section of air pollution
권수한,김광렬,황태모 충북대학교 건설기술연구소 1991 建設技術論文集 Vol.9 No.2
This study was carried out to investigate on air pollution at Cheong ju city, so the values of pH of the rainfall, amounts of dustfall and total suspended particulates, concentrations of sulfur oxide, and heavy metals in the suspended particulates were analyzed from march 1990 to march 1991. The results were as follows ; 1. The mean value of pH in the rainfall was 6.01, and the range of pH values was 5.04∼7.03 2. The mean value of dustfall was 17.3 ton/㎢/30days, and the range of that was 12.4∼21.0 ton/㎢/30days 3. The mean concentration of sulfur oxide was 0.71mg SO₃/day/100㎠ PbO₂, and the range of that was 0.22∼1.24mgSO₃/day/100㎠ PbO₂. 4. The mean value of total suspended particulates was 155.0㎍/㎡ and this value was higher than pollution index, The range of TSP was 88.8∼198.1㎍/㎡ 5. The mean values of heavy metals of TSP were 0.002㎍/㎡ of Cd, 0.17㎍/㎡ of Pb, 0.037㎍/㎡ of Cu, 0.136㎍/㎡ of Zn and 0.045㎍/㎡ of Mn, respectively.
피로내구 시험용 전자기식 선형 액추에이터의 추력 및 체적 최적화 연구
손율규(Yul-kyu Son),백수황(Soo-whang Baek),권병일(Byung-il Kwon) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.10
This paper introduces the optimal design process to effectively increase the thrust and decrease the volume in electro-magnetic linear actuator for fatigue and durability test machine. Finite element method is used to dynamic response analysis the thrust, velocity and displacement, and optimal model results are compared with initial model results. In order to increase the trust and decrease the volume in electro-magnetic linear actuator for fatigue and durability test machine, adjust the inner and outer radius of electro-magnetic linear actuator stator yoke. In optimal design process, the sampling points are chosen by Latin Hypercube Sarnpling(LHS) and from the results, the approximation modeling is made by Radial Basis Function(RBF) and then the optimization results are obtained by Genetic Algorithm(GA). The optimization results are verified by using finite element analysis.
스큐구조 영구자석 회전자를 갖는 2상 BLDC 전동기의 코깅토크 저감 최적설계에 관한 연구
백수황(Soo-whang Baek),김재범(Jae-beum Kim),손율규(Yul-kyu Son),권병일(Byung-il Kwon) 대한전기학회 2010 대한전기학회 학술대회 논문집 Vol.2010 No.10
본 논문은 2상 BLDC 전동기익 코깅토크의 저감을 위한 최적화 설계를 수행하였다. 코깅토크의 저감을 위하여 고정자치 형상에 관한 설계변수를 선정하여 최적설계 모델을 산출하였다. 또한 추가적인 코깅토크의 저감을 위하여 회전자 영구자석에 스큐착자 방식을 적용한 최적모델 설계를 수행하였으며 특성을 분석하였다. 최적화 과정으로는 Latin Hypercube Sampling(LHS)를 이용하여 Sampling point를 추출하였으며, Radial Basis Function(RBF)를 사용하여 근사화 모델을 생성하였으며, Genetic Algorithm(GA)를 이용하여 최적점을 찾았으며 이를 통하여 최적화 모델을 설계 하였다. 회전자 영구자석이 스큐착자 구조를 갖는 2상 BLDC 전동기의 최적설계모델은 시간차분 3D 유한요소 해석을 통하여 추가석인 코깅토크 특성을 분석하였고 코깅토크의 개선여부를 확인하였으며, 이를 통하여 제안한 설계방법의 적합성을 입증하였다.