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Jeong, Y. J.,An, C. H.,Woo, S. G.,Park, J. H.,Lee, K. W.,Lee, S. H.,Rim, Y.,Jeong, H. J.,Ryu, Y. B.,Kim, C. Y. Springer Netherlands 2016 Plant Molecular Biology Vol. No.
<P>The biosynthesis of flavonoids such as anthocyanin and stilbenes has attracted increasing attention because of their potential health benefits. Anthocyanins and stilbenes share common phenylpropanoid precursor pathways. We previously reported that the overexpression of sweetpotato IbMYB1a induced anthocyanin pigmentation in transgenic tobacco (Nicotiana tabacum) plants. In the present study, transgenic tobacco (Nicotiana tabacum SR1) plants (STS-OX and ROST-OX) expressing the RpSTS gene encoding stilbene synthase from rhubarb (Rheum palmatum L. cv. Jangyeop) and the RpSTS and VrROMT genes encoding resveratrol O-methyltransferase from frost grape (Vitis riparia) were generated under the control of 35S promoter. Phenotypic alterations in floral organs, such as a reduction in floral pigments and male sterility, were observed in STS-OX transgenic tobacco plants. However, we failed to obtain STS-OX and ROST-OX plants with high levels of resveratrol compounds. Therefore, to improve the production of resveratrol derivatives in plants, we cross-pollinated flowers of STS-OX or ROST-OX and IbMYB1a-OX transgenic lines (SM and RSM). Phenotypic changes in vegetative and reproductive development of SM and RSM plants were observed. Furthermore, by HPLC and LC-MS analyses, we found enhanced production of resveratrol derivatives such as piceid, piceid methyl ether, resveratrol methyl ether O-hexoside, and 5-methyl resveratrol-3,4'-O-beta-d-diglucopyranoside in SM and RSM cross-pollinated lines. Here, total contents of trans- and cis-piceids ranged from approximately 104-240 A mu g/g fresh weight in SM (F-2). Collectively, we suggest that coexpression of RpSTS and IbMYB1a via cross-pollination can induce enhanced production of resveratrol compounds in plants by increasing metabolic flux into stilbenoid biosynthesis.</P>
洪鳳植,王鎭錫,吳承燁,金太均,林在鳳,朴東徹,沈殷燮 충남대학교 공업교육연구소 1979 論文集 Vol.2 No.2
In the last ten years there has been a dramatic change in the electrical industry regarding its technology and capability. VLSI circuits technologies have brought about the develoment of computers, digital communications, digital control systems, and others. The microprocessor now is appearing in the simplest appliances as well as in complex systems, permeating all of engineering. This paper is presented as a proposal for a more improved education courses for technical high school students preparing to enter this dynamic electronic industry. The current curricula, and their syllabuses, of the electronic deparments of typical technical high schools were analyzed, and their teachers and instructors, as well as technicians in electronic companies, were consulted about the education courses. The results of this study are follow: 1. The fields of digital circuits and systems using IC and LSI should be emphasized in the current curricula and the subject of microprocessor applications should be added. 2. The current ratio of the theoretical; subject hours vs laboratory /shop practice hours should be rearranged at about same ratio through effective laboratory systems. 3. A retraining course for experimental instructors and supervisors should be provided, similar to that provided for teachers. 4. Technical high school education should avoid the erroneous philosophy of training the student only sufficiently to pass the qualification examination.
약(葯)배양 기법 이용한 이탈리안 라이그라스 식물체 생산
김기용,강경민,최기준,임용우,장요순,성병렬,손대영,이병현,조진기 Plant molecular biology and biotechnology research 2002 Plant molecular biology and biotechnology research Vol.2002 No.-
We obtained regenerated Italian ryegrass (Lolium multiflorum Lam.) plants by anther culture. When Italian ryegrass anther was incubated for 20 days on callus induction medium, MS medium containing 30 g/ℓ of NAA and 1 mg/ℓ of kinetin its callus was induced. The ratio of callus induction was 9.2 %, the mean of callus weight was 8.6 mg/callus/anther. When Italian ryegrass callus was incubated for 50 days on plant regeneration medium, MS medium containing 30 g/ℓ of sucrose, 1 mg/ℓ of NAA and 2 mg/ℓ of kinetin, Italian ryegrass plant was regenerated. The ratio of plant regeneration was 26%.
R&D and Commercialization of One-ton EV Truck
G.H. Rim(임근희),T.H. Ha(하태현),Y.K. Choi(최영길),S.C. Kim(김성철),이성준,H.J. Ryoo(류홍제),H.S. Kim(김혁수) 대한전기학회 2016 대한전기학회 학술대회 논문집 Vol.2016 No.3
Electric Vehicles (EV) have a history more than one century and global warming rekindles the issues on EV. Hence, many EV models are available in the market. We have developed eleven electric trucks for city delivery services. Some of the key issues related on the development is discussed including road test results.
임근희(G.H. Rim),강유리(I. Kang),김원호(W.H. Kim) 전력전자학회 1996 전력전자학술대회 논문집 Vol.1996 No.-
교류전원은 직류전원과는 다르게 전력 이용 및 전달에 있어서 유효역률과 고조파의 영향을 분리하여 생각할 수 있다. 특히, 고조파의 영향과 전력전자의 발달과 더블러 그 문제점이 크게 부각되어 있다. 유렵을 중심으로 세계 각국에서는 구격제정(EN61000, IEC 519, IEEE 555 등)과 규제강화에 나서고 있다. 국내에서는 아직까지 크게 주목받지 않고 있으나, 전력의 효율개선, 양질의 전력공급 등의 측면에서 기술 향상에 필수적으로 고려되어야 할 분야이다. 이에 본 연구에서는 간단한 제어기 구성을 통해 병렬 인버터와 하이브리드 능동필터 개념을 도입하여 역률 개선, 고조파 저감 등을 통해 교류전력 품질 개선 장치를 구성하였다. 본 연구결과로 고압 대전력 전력변환장치의 무효 전력을 감소시켜 발전 전력의 효율적 이용과 부하측의 고주파 문제를 최소화하는데 기여할 수 있을것으로 기대된다.