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김동욱,김주영,김수정,김민지,이주연,김명겸,Kim, Dong-Uk,Kim, Ju-Young,Kim, Su Jeong,Kim, Min Ji,Lee, Ju Yeon,Kim, Myung Kyum The Microbiological Society of Korea 2017 미생물학회지 Vol.53 No.3
이 연구에서는 자동차의 에어컨의 바이오필름환경에서 분리 된 Spirosoma aerolatum KACC $17939^T$의 완전한 게놈 서열을 분석하였다. 이 게놈은 G + C 함량이 48.3%인 7,959,595 bp으로 구성되어 있고 6,471개의 유전자와 6,471개의 단백질 코딩 유전자, 9개의 rRNA 유전자 그리고 43개의 tRNA 유전자 및 115개의 위유전자(pseudogene)를 포함하고 있다. A Gram-stain-negative, yellow-pigmented bacterial strain, designated Spirosoma aerolatum KACC $17939^T$, was isolated from a biofilm of car air conditioner collected in Republic of Korea. In this study, we report the complete genome sequence of a bacterium Spirosoma aerolatum KACC $17939^T$ obtained using the PacBio RS II platform. The genome comprised of 7,959,595 bp with the G + C content of 48.3%, the genome included 6,640 genes were predicted, among them, 6,471 genes are protein-coding genes.
스쿠버다이빙 참가자의 참여정도와 참여동기 및 행복감의 관계
김동욱(Dong Uk Kim),김영갑(Young Kab Kim) 한국사회체육학회 2012 한국사회체육학회지 Vol.0 No.48
This objective of this study is to analyze the relationship between participation level and participation motivation and happiness among skin-scuba participants. The scope of this study is the skin-scuba participants who activated in some Dong-Hae diction of Kangwondo in 2011. The scope was abstracted by using Convenience Sampling Method. We finally analyzed 278 questionnaires which were distributed 300 first. The way of material disposing was frequency analysis, descriptive analysis, correlation analysis, and multiple regression analysis by using SPSS program. The following research results were drawn. First, The intensity of exercise in participation level had a good effect on the health improvement and The exercise frequency of participation level had a good effect on self-development and The exercise frequency and exercise period of participation level had a good effect on guidance hope. Second, The exercise intensity of participation level had a good effect on satisfaction and The exercise intensity and frequency of participation level had a good effect on accomplishment. Third, The health improvement, accomplishment, guidance hope and sociality had a good effect on the happiness of satisfaction, and the health improvement and sociality had a good effect on the happiness of accomplishment.
김동욱,김주영,김수정,김민지,이주연,김명겸,Kim, Dong-Uk,Kim, Ju-Young,Kim, Su Jeong,Kim, Min Ji,Lee, Ju Yeon,Kim, Myung Kyum The Microbiological Society of Korea 2017 미생물학회지 Vol.53 No.3
이 연구에서는 우포늪의 깨끗한 물에서 분리된 Spirosoma rigui KCTC $12531^T$의 완전한 게놈 서열을 분석하였다. 이 게놈은 G + C 함량이 54.4%인 5,828,404 bp으로 구성되어 있고 4,774개의 유전자와 4,647개의 단백질 코딩 유전자, 9개의 rRNA 유전자 그리고 43개의 tRNA 유전자 및 73개의 위유전자(pseudogene)를 포함하고 있다. Spirosoma rigui KCTC $12531^T$ was isolated from fresh water from the Woopo wetland, Korea. In this study, we report the complete genome sequence of a bacterium Spirosoma rigui KCTC $12531^T$, its complete genome sequence was obtained using the PacBio RS II platform. The genome comprised of 5,828,404 bp with the G + C content of 54.4%, the genome included 4,774 genes were predicted, among them, 4,647 genes are protein-coding genes.
4600계 소결강의 조직에 미치는 F$e_2$P첨가의 영향
김동욱,이완재,Kim, Dong-Uk,Lee, Wan-Jae 한국재료학회 1992 한국재료학회지 Vol.2 No.6
AISI 4600계 철 분말에 F$e_2$P 분말을 사용하여 인(P)을 0~1.0% 그리고 흑연 분말을 사용하여 탄소를 0~0.8% 첨가하여 회전혼합기를 사용하여 혼합하였다. 흔합분말을 양단압금형에서 800MPa로 가압하여 성형체를 만들었다. 성형체는 진공 또는 수소와 질소 혼합가스 분위기에서 115$0^{\circ}C$에서 30분간 소결하였다. 소결체를 연마하고 2% 질산용액으로 에칭하였다. 소결체 조직을 Image Analyzer와 금속현미경으로 관찰하였다. 밀도는 ASTM B3l2로, 경도는 미세 비커스경도기로 측정하였다. 얻어진 결과는 다음과 같다. (1) F$e_2$P 첨가량이 증가하면, 소결체 조직은 치밀화되고 입자 크기는 더 커졌다. (2) $Fe_2P량과$ 함께 기공의 형상은 둥글고, 그 숫자는 감소하였으나 평균크기는 더 커졌다. (3) 입자의 크기는 F$e_2$P와 흑연분말을 동시에 첨가한 경우가 각각 단독으로 첨가한 경우보다 커졌다. (4) 미세조직에 미치는 소결분위기의 영향은 거의 없었다. (5) 경도는 인과 탄소량이 증가하면 상승하였다. AISI 4600 Iron powder was mixed with 0~1.0% phosphor as F$e_2$P powder and/or 0~0.8% carbon as graphite powder in rotating mixer. Mixed powder was pressed 800MPa in double-punch mould. Compacts were sintered at 115$0^{\circ}C$for 30 min. in vacuum or mixed hydrogen and nitrogen gas. Sintered compacts were ground and polished, and etched by 2% nital etchant. The microstructure was observed by image analyzer and optical microscope. Density and microhardness were tested by ASTM B3l2 and Microvickers hardness tester. The results obtained were as follows : (1) As the amount of F$e_2$P powder increased, sintered microstructure showed more densified effect and the grain size was larger. (2) The shape of pore was rounded and the number of pore was decreased by F$e_2$P addition. But mean pore size was larger with F$e_2$P content. (3) Simultaneous alloying addition of F$e_2$P and graphite brought about larger grain growth than respective addition. (4) Sintering atmosphere did not affect the microstructure. (5) Hardness of sintered compact increased with phosphrous and carbon content.