Life-threating Streptococcus suis bacteremia with Purpura fulminans

김동섭,김은진,김용찬,허중연,최영화,이위교 대한내과학회 2019 대한내과학회 추계학술대회 Vol.2019 No.1

오일팜 바이오매스 Empty Fruit Bunch의 식생소재 적용을 위한 특성평가

김동섭,성용주 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0

자연친화적 환경의 필요성 증대와 작물 생산기술의 발전으로 기존의 자연토를 대체한 인공토양의 활용 및 수요가 증가하고 있다. 인공토양은 인공적으로 유·무기소재를 배합하여 식생에 필요한 인자를 충족하는 경량의 인공토양이 주로 사용되는데 특히 코코피트, 피트모스와 같은 유기 소재는 식생재 내에서 수분을 저장 및 유지하고 공급하기 위한 역할을 수행하고 있다. 그러나 기존 유기소재의 수요증가 및 가치상승에 의해 농가의 경제적 부담이 가중되어 이를 대체하기 위한 연구가 시급하다. 이에 본 연구에서는 섬유상 자원인 오일팜 EFB를 대체소재로써 활용하기 위하여 EFB의 식생소재로써의 적용 가능성을 평가하였다. EFB는 기존의 유기소재에 비하여 표면 OH기가 다량 분포되어 보다 친수성의 소재로써 적용 가능하며, 유해성분인 중금속이 기존 소재에 비해 높게 측정되지만, 원예용 상토 품질관리 기준치 이하로써 식생소재로써 적용 가능할 것으로 판단된다. 본 연구는 산림청 ‘산림과학기술개발사업(과제번호 : S111212L070100)’의 지원에 의하여 이루어졌습니다.

Relationship between spatial organization and biological function, analyzed using gene ontology and chromosome conformation capture of human and fission yeast genomes

김동섭,한승수 한국유전학회 2016 Genes & Genomics Vol.38 No.8

Cells regulate functionally related genes cisand trans-contacts in order to perform specific biological roles. To understand the cryptic spatial genomic contexts underlying these biological functions, we analyzed the gene association data from the gene ontology (GO) database and the genomic spatial organization data obtained by analysis of chromosome conformation capture (3C)-based data from the Sequence Read Archive, where GO and 3Cbased data were used to measure functional similarity and spatial proximity, respectively, between genomic loci. In the human genome and the fission yeast genome, we observed that correlation between the two measures was statistically significant on a genome-wide scale. Specifically, it is also confirmed that the genomic spatial architecture is affected by functional similarity of genes by showing better correlation of functional similarities with spatial distances estimated by contact frequencies than those estimated by genomic distances for cis-contacts. Furthermore, we analyzed distances between the genomic segments sharing the same GO term using the two-sample t test, found that the genomic segments identified by various GO terms are spatially located closer than the average distance over statistically-valid contacts, and provided a list of the GO terms. The results suggested that genomic loci with similar biological functions are situated in close proximity to each other in the nuclear space by aggregating functionally related genes in a short spatial range.

분산전원 연계변압기의 전압 탭을 고려한 Volt-Var 제어 곡선 적합성 연구

김동섭,김현진,조종민,백자현 대한전기학회 2022 전기학회논문지 Vol.71 No.10

This paper studies and proposes the Volt-Var control curve considering DER(Distributed Energy Resources) transformer voltage tap. As DER is increasing around the world, DER is required to have a system support function for power system stability. Recently, even in Korea, the power system support function is required for the DER. In particular, the Volt-Var reactive power function will be used to solve the overvoltage problem caused by the increase in generation of DER in distribution system. DER in the domestic distribution system uses a transformer to connect into the distribution system, and the transformer voltage tap is set differently depending on the system situation. Therefore, this paper analyzes the suitability of the Volt-Var control curve in the domestic system by considering the transformer voltage tap, and suggests a method for setting the Volt-Var control curve suitable for the domestic system

지엽부산물 기반 판상 식생구조체 제조 연구

김동섭,성용주 한국공업화학회 2022 한국공업화학회 연구논문 초록집 Vol.2022 No.-

대학생의 개인별환경이 창업동기, 창업교육 및 창업의도에 미치는 영향-의정부 4년제, 2년제 대학을 중심으로-

김동섭 한국외식경영학회 2017 외식경영연구 Vol.20 No.6

The purpose of this study is to examine the effects of individual environmental factors of university students to entrepreneurial intentions, education, and motivations. Based on literature search, four variables which compose the decision of establishing business. They were individual environmental factor, entrepreneurial intentions, education, and motivations. These four variables were tested through statistical methodology such as reliability analysis, factor analysis, correlation analysis, and regression analysis. These results lead to the conclusion that is a Challenge Spirit, Riskiness, Initiative, Self realization, apply to aptitude, Family business succession, Fellow trader, Interdisciplinary Study Course, Participate in Club activities. The result of this study would help to explore and specify factors on entrepreneurial minds of university students. There is room for further investigation about policy, plan for support, Related bussiness in Entrepreneurial. 본 연구의 목적은 의정부시의 4년제, 2년제 대학생들을 대상으로 대학생의 개인별 환경이 창업동기, 창업교육 및 창업의도에 미치는 영향을 조사하였다. 본 조사는 설문조사를 통해 신뢰성 분석, 요인분석, 상관분석을 실시하였다. 본 조사는 문헌조사의 선행연구를 이용하여 연구의 가설을 정하고 4가지 요인으로 변수를 추출하였다. 4가지 요인은 개인별환경, 창업동기, 창업교육, 창업의도로 검증되었다. 결론적으로 4가지 요인을 통해 도출된 내용은 도전정신, 새로운일, 어려운 위험에 대한 모험정신, 커러큘럼, 자아실현, 적성적용, 가업승계, 동업친구, 연계전공교육, 동아리활동, 적극성 경력의 필요성 등이 창업동기,창업교육,창업의도에 영향을 주는 것으로 검증되었다. 이러한 연구조사를 기반으로 다른 사회적인 현상들을 구성하여 연구한다면 미래의 청년 창업의 솔루션으로 새로운 방안을 탐색할 수 있으리라 사료된다.

액화천연가스의 냉열을 이용한 가스터빈의 성능향상

김동섭,노승탁,이우일,최만수,고상근,Kim, Tong Seop,Ro, Sung Tack,Lee, Woo Il,Choi, Mansoo,Kauh, Sang Ken 대한기계학회 1999 大韓機械學會論文集B Vol.23 No.5

This work describes analysis on the effect of inlet air cooling by the cold energy of liquefied natural gas(LNG) on the performance of gas turbines. Gas turbine off-design analysis program to simulate the influence of compressor inlet temperature variation is prepared and an inlet air cooler is modeled. It is shown that the degree of power augmentation is much affected by the humidity of inlet air. If the humidity is low enough, that is the water content of the air does not condense, the temperature drop amounts to $18^{\circ}C$, which corresponds to more than 12% power increase, in case of a $1350^{\circ}C$ class gas turbine with methane as the fuel. Even with 60% humidity, about 8% power increase is possible. It is found that even though the fuel contains as much as 20% ethane in addition to methane, the power improvement does not change considerably. It is observed that if the humidity is not too high, the current system is feasible oven with conceivable air pressure loss at the inlet air cooler.

Antimicrobial Activity of Various Parts of Tomato Plants Varied with Different Solvent Extracts

김동섭,Yurina Kwack,Jung Heon Lee,Changhoo Chun 한국식물병리학회 2019 Plant Pathology Journal Vol.35 No.2

The antimicrobial activity of acetone, hexane, dichloromethane, and methanol extracts from leaves, stems, immature green fruits, and red fruits of tomato plants was examined against six phytopathogens. The minimum inhibitory concentration (MIC) of the acetonic extracts from these four plant parts was lower than that of the other solvents. Among the acetonic extracts, tomato leaves had a lower MIC than the other tomato parts. The acetonic extract from tomato leaves was therefore selected as a source of antimicrobial substances. The acetonic extract from tomato leaves inhibited mycelial growth of Fusarium oxysporum f. sp. lycopersici, Glomerella cingulata, and Rhizoctonia solani. Mycelial growth of R. solani treated with acetone extract from leaves showed more susceptibility than the other phytopathogens. Using 0.31 mg/ml of the acetonic extract from leaves, mycelial growth of R. solani on days 1, 2, and 3 decreased by 50.0, 52.1, and 64.0%, respectively, compared with acetone solvent treatment. The antimicrobial compounds effective against R. solani were identified as linolenic acid and caffeic acid by bioautography and GC-MS. These two compounds were used to treat six phytopathogens to confirm their antimicrobial activities. Linolenic acid inhibited mycelial growth of R. solani, while caffeic acid showed only slight antimicrobial activity. Results indicated that we propose extracts from tomato leaves which included antimicrobial compounds may provide a new lead in the pursuit of new biological sources of agrochemical candidates.

비정질/결정질 실리콘 이종접합 대면적(4인치급 이상) 고효율 셀 기술 개발

김동섭 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11

컬러화보-공룡

김동섭,Kim, Dong-Seop 한국과학기술단체총연합회 1994 과학과 기술 Vol.27 No.4