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Sphingomonas chungbukensis DJ77의 16S rRNA 염기서열과 이차구조
이관영,권해룡,이원호,김영창,Lee Kwan-Young,Kwon Hae-Ryong,Lee Won-Ho,Kim Young-Chang 한국미생물학회 2005 미생물학회지 Vol.41 No.2
A 16S ribosomal RNA gene from S. chungbukensis DJ77 has been sequenced. This sequence had a length of 1,502 bp and was extended for 29 bp at 5' and for 37 bp at 3' from the partial sequence (1,435 bp) registered in 2000 year. Besides, 1 bp was newly added near to the 3' end. We made the secondary structure of the 16S rRNA based on E. coli model and found four specific regions. We found constant and variable regions in genus Sphingomonas as the result of multiple alignment of 16S rRNA gene sequences from Sphingomonas spp. and S. chungbukensis DJ77. We found a stem loop structure in S. chungbukensis DJ77, which was only discovered in C. jejuni to date. It showed the structural agreement despite the difference of the sequences from the both organisms. Finally, S. chungbukensis DJ77 belonged to cluster II (Sphingobium) group, after the classification using phylogenetic analysis and nucleotide signature analysis.
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이관영 대구대학교 산업기술연구소 1984 産業技術硏究 Vol.3 No.-
The run off with the type of precipitation are influenced on the many factors. In this study, the correlation among the many factors, for instance, run off ratio, total rainfall, humidity of soil, antecedent discharge just prior to flood, losses etc., which have an effect on the run off, are researched, and from that, if the antecedent discharge can be representative of the humidity of soil, are studied in the object area of the south Han-river System. Therefore, we can conclude that the antecedent discharge are closely related with index of the humidity and run off ratio.
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국내에서 분리된 Aspergillus flavus 균주에 의한 Aflatoxin의 생성
이관영,최언호,이서래,Lee, Kwan-Young,Choi, Eon-Ho,Lee, Su-Rae 생화학분자생물학회 1975 한국생화학회지 Vol.8 No.1
국내의 변질미에서 분리, 동정된 Aspergillus flavus var. columnaris의 aflatoxin 생성능을 확증하기 위하여 본 균주를 인위적으로 접종한 쌀에서 aflatoxin $B_1$을 결정 상태로 순수 분리하였고 thin-layer chromatographic behavior, 융점, 유도체 합성, 자외선 및 적외선 흡수 스펙트럼, 그리고 미생물학적 반응에의 하여 이를 동정하였다. 본 균주에의 한 aflatoxin의 생성 능력은 쌀 1g 당 $7.8\;{\mu}g$으로써 외국에서 aflatoxin을 가장 많이 생성하는 것으로 알려진 표준 균주의 그것에 비하여 1/90 정도에 불과하였다. In order to confirm the producibility of aflatoxin by Aspergillus flavus var. columnaris isolated from deteriorated rice in Korea, aflatoxin $B_1$ was purified in crystalline form from artificially inoculated rice and identified by thin-layer chromatographic behavior, melting point, derivative formation, ultraviolet and infrared absorption spectra, and growth inhibition of Bacillus megaterium. The production level of aflatoxin by the strain was about $7.8\;{\mu}g$ per g of rice, being about 1/90 of that by A. flavus group known to produce the most aflatoxin in the world.
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이관영,한국희 대구대학교 산업기술연구소 1991 産業技術硏究 Vol.10 No.-
Drainage area is found to be the most important factor in the river morphological characteristics of small river basin. For the analytical study of the characteristics of drainage area, the river basins of Sab-Gyo, Mu-Han and Gok-Gyo Rivers are divided into the equal length along the course of river. This study employs the stream order and analyses the river basins using the statistical theories. The characteristics of run-off and physiography of small river basins havings similar conditions in morphological characteristics are predicted from the selected model of Sab-Gyo river and its branches. The results of this study are as follows: 1) The theoretical ratio of drainage area shows a good agreement with that of actural drainage area when the number of division of river course has the values of 13 of 14. 2) The distribution ratio of drainage area is found to be about O.174-0.189. 3) This analytical method is considered as powerful way for understanding the characteristics of small river basins having mostly a stiff topography.
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원심압축기의 Pinched 디퓨저의 형상에 따른 성능과 유동특성에 대한 전산해석적 연구
이관영,이상철 대구대학교 산업기술연구소 2011 産業技術硏究 Vol.22 No.1
This study describes effects of width contraction in vaneless diffuser on the performance of centrifugal compressors using commercial CFD code. Numerical analysis for three different diffusers such as Parallel, half contraction, and full contraction was performed. The results show that the performance of the centrifugal compressor is improved through the use of the diffusers with width parallel in high flow rate. The width contraction of diffusers is influenced static pressure rises. Comparison with the experimental data shows agreement
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이관영,김영섭 대구대학교 산업기술연구소 2009 産業技術硏究 Vol.20 No.1
This research have selected a analysis target area for the assessment and estimation of non-point source pollution load in agricultural area and segmented hydrologic monitoring network and water quality monitoring network and have suggested parameter estimation technique of AGNPS model, which is regarded as appropriate for our country’s farming area, throughout the analysis for hydrologic phenomenon and water quality. This research has reached at chapter IV.
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生態環境(Eco-Environmental)을 考慮한 新川의 開發方向에 關한 硏究
이관영,박상현 대구대학교 과학기술연구소 1997 科學技術硏究 Vol.4 No.2
In this study we tried to do our best to develop the shinchun-stream which is the largest open space in the urban area of Taegu as a ecologically natural hydrophilic space and we could have some conclusions as followings: 1. We found that the shinchun-stream could improve the urban scenery and image, play the role of Eco-bridge connecting the upper stream to the under stream but with the present condition the shin doesn't fulfil these two roles. 2. The surrey shows that at all the station we surveyed, the concentration of T-N, T-P were each 16.9∼19.Omg/ℓ , 0.72∼1.29mg/ℓ . This means that the river is already on the over-nourishment step. 3. In order to do the role of eco-bride, it is very urgent to take some steps for storing ecology such as the removal of the existing concrete banks, the construction of environment-intimate structures and re-planting. 4. Considering the uses of the flood bed of the shincun, if we change the existing monotonous, uniform sports facilities, and parking lots into the small streams and swampy lands, me can accelerate the restoration of ecology and use the flood bed as a nature observing place.
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