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고등식물의 질산시그널에 의한 유전자 발현제어 관련 전사인자의 연구현황
정유진(Yu Jin Jung),박정순(Joung Soon Park),고지윤(Ji Yun Go),이효주(Hyo Ju Lee),김진영(Jin Young Kim),이예지(Ye Ji Lee),남기홍(Ki Hong Nam),조용구(Yong-Gu Cho),강권규(Kwon Kyoo Kang) 한국식물생명공학회 2021 JOURNAL OF PLANT BIOTECHNOLOGY Vol.48 No.3
Nitrate is an important nutrient and signaling molecule in plants that modulates the expression of many genes and regulates plant growth. In this study, we cover the research status of transcription factors related to the control of gene expression by nitrate signaling in higher plants. Nitrate reductase is a key enzyme in nitrogen assimilation, as it catalyzes the nitrate-to-nitrite reduction process in plants. A variety of factors, including nitrate, light, metabolites, phytohormones, low temperature, and drought, modulate the expression levels of nitrate reductase genes and nitrate reductase activity, which is consistent with the physiological role if. Recently, several transcription factors controlling the expression of nitrate reductase genes have been identified in higher plants. NODULE-INCEPTION-Like Proteins (NLPs) are transcription factors responsible for the nitrate-inducible expression of nitrate reductase genes. Since NLPs also control the nitrate-inducible expression of genes encoding the nitrate transporter, nitrite transporter, and nitrite reductase, the expression levels of nitrate reduction pathway-associated genes are coordinately modulated by NLPs in response to nitrate. Understanding the function of nitrate in plants will be useful to create crops with low nitrogen use.
3D metal printing에 의한 이종금속 대형 조형물 제작 연구
박송이(Song-Yi Park),이채영(Chae-Young Lee),장단비(Dan-Bi Jang),김안나(An-Na Kim),김수현,문유빈(Yu-Bin Mun),정유진(Yu-Jin Joung),조상명(Sang-Myung Cho) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11
3D metal printing(AM) technology is the production technology to create metal products in way that the melted metal deposit from 3D CAD model data directly. Recently, research of AM techniques is active. AM techniques are divided into powder-based AM and wire-based AM. Wire-based AM is good for AM products of large-scale with a high speed deposition, inexpensive material. When TIG welding which is one of wire-based AM is applied, TIG welding AM is possible to control respectively the speed of the filler wire and arc intensity. Also, TIG welding AM has the advantages of wire-based AM and of clean environment. This study was carried out to establish the bead shape and dominant parameter that are suitable for build-up. STS316L and Albronze(CuAl-A2) were built up using conventional TIG and the Super_TIG welding in order to apply to the AM. The heat input as build-up should be increased for getting a uniform bead shape, because Albronze has high thermal conductivity. The heat input for STS316L as build-up should be reduced in order to get a uniform bead shape, because it has thermal barrier effect due to low thermal conductivity. Applying the Super_TIG welding, the productivity was about 3times of conventional TIG welding. The uniform wall thickness and good appearance could be obtained even if STS316L and Albronze were built alternately.
개량 횡 장력대 철선 고정술을 이용한 슬개골 골절의 치료
이규성,오정대,임경린,정유진 대한골절학회 1998 대한골절학회지 Vol.11 No.4
Recently the fracture of patella has increasing tendency due to frequent traffic and industrial accidents. In this series., we treated fractures of patella by open reduction and internal fixation with modified transverse tension band wiring method. Early post operative continuous passive motion and early weight bearing exercise were followed. This method was excellent for treatment of the patella fractures. The surgical results were evaluted by Leveck scoring systems, 12 out of 14 cases had satisfactory results. This technique have some advantage in terms of decreasing pain and maintenance of circulation on the patella, because of the small incision and minimize dissection. It can prevent post operative complications such as limitation of motion and post traumatic arthritis of the knee joint