분자마커를 이용한 작물의 품종 개량과 품질관리

이이,엄유리,정찬문,석영선,이학수 충북대학교 연초연구소 2009 煙草硏究 Vol.22 No.-

분자마커는 현대 농업에서 없어서는 안 될 중요한 도구로 자리잡아가고 있으며 단백질과 DNA에 기초한 다양한 분자마커가 개발되었다. RFLP, RAPD, SSR, AFLP, CAPS, SNP, STS, DNA sequencing 등 다양한 분자마커는 독특한 특성을 가지고 있어서 용도에 맞게 분자마커를 선별하여 사용할 필요가 있다. 분자마커의 선별에서는 사용가능한 DNA의 양, DNA의 품질, 공우성 마커 여부, 비용 등을 고려해서 해야 한다. 담배에서는 주로 병저항성과 품종을 감별하기 위한 분자마커가 개발되어 이용되고 있으나 담배의 DNA 다형성이 다른 작물에 비하여 현저히 낮아 게놈프로젝트가 완성되면 resequencing을 이용하여 마커를 개발하는 것이 효율적일 것으로 보인다. Molecular marker is very important tool for modern agriculture. Various molecular markers were developed for detecting protein and DNA polymorphism. Restriction Fragment Length Polymorphism (RFLP), Random Amplified Polymorphic DNA (RAPD), Simple Sequence Repeat (SSR), Amplified Fragment Length Polymorphism (AFLP), Cleaved Amplified Polymorphic Sequence (CAPS), Single Nucleotide Polymorphism (SNP), Sequence Tagged Site (STS) and DNA sequencing are typical molecular markers commonly used. Each molecular marker has its own specific characters. Researchers have to choose a molecular marker for their own demands with considering the DNA quantity required, DNA quality required, codominance, and cost for developing and analysis. In tobacco, disease resistance and cultivar identification are the main focus of marker development. DNA polymorphism of tobacco is much less than that of other crops. Completion of genome project followed by resequencing could be a good opportunity for molecular marker development of tobacco.

디지털미디어사회의 특성이 적용된 현대건축경향에 관한 연구 : 1980년대 중반 이후의 건축물을 중심으로

이수찬,박언곤 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

Information Society, based on a leap development of information communication technology, computer and digital technology, has radical changes over all society in politic, economy, culture and arts etc through the digital media so called 'New Media'. Therefore, the architectural environment's existing paradigm that has been in the interconnection with social character through the history of human being, is threatened by new technological revolution. In fact, many buildings in different aspects from previous time are stepping in. Therefore, there are proposals on the necessity to look buildings in new aspects grounded on new social characteristics. In this study, using the architectural trends in proceeding with various aspects and social characteristics as the device of the analysis, we will examine how these characteristics are used in the field and further more, to provide the clues on finding out the problems and the direction of development.

BaTiO_3결정의 사각형 강유전 구역에 관한 온도와 전기장 특성

이찬구,이수대,문준규 慶南大學校 附設 工業技術硏究所 2003 硏究論文集 Vol.21 No.2

BaTiO_3 결정의 (100)면에 수직한 방향에서 관측되는 강유전 구역을 온도와 전기장의 변화에 따라 편광현미경으로 관측하였다. BaTiO_3 결정의 (100)면에 수직한 방향에서 관측되는 그물모양의 사각형 강유전 구역이 90℃-구역이라는 사실을 밝혔다 우리는 사각형 강유전 구역의 온도특성과 정전기장 특성에 관하여 조사하였다 사각형 강유전 구역은 상전이 온도인 120℃ 이상에서 사라졌다. 24℃에서 외부 전기장을 인가한 경우, 4 0×10^7 V/m에서 구역의 변화가 관측되며, 5.5×10^7 V/m의 전기장을 가하여도 단일 강유전 구역은 형성되지 않으며, 5.5×10^7 V/m 이상에서는 누설전류가 흘렀다. 한편 온도를 114℃로 올리고 전기장을 5 5×10^7 V/m 이상으로 가하면 단일 강유전 구역이 형성되었다. We observed the ferroelectric domain in a vertical direction of the (100) plane of BaTiO_3 crystal by a polarizing microscope We find out that ferroelectric domains of the square pattern are 90℃0domain. The electric field Properties and the temperature dependent of ferroelectric domain in BaTiO_3 Crystal was investigated From these results, it was concluded that the square domains disappeared from sight at above 120℃, and the Change of the domain pattern observed at 24℃ and 4.0×10^7V/m, it Showed the leakage current 5.5×10^7 V/m. A single domain do not formed 24℃ and above 5.5×10^7 V/m. On the other hand, a single domain formed at 114℃and above 5.5×10^7 V/m.

무선 애드 혹 기반 액티브네트워크상에서 QoS지원에 관한 연구

李基源,裵振勝,丁燦赫,金玄郁,李光培,姜景仁,朴京培,文泰洙,郭承郁,河載承 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-

Abstract - In this thesis, we propose a QoS supporting method on wireless ad hoc-based active network for improving reliability. On the loss of route path, the existing DSR routing protocol has several problems with wireless network communication because of decease of data reception rate and increase of network load. The proposed method improves reliability of data transfer by using functions of active network. That is, by using functions of active nodes and active packets, the proposed method supports QoS with reservation transfer method that saves data packets on transfer at intermediate nodes with lost path and then re-transmit the packets after route reconfiguration.

바이오안전성에 대한 세계적인 동향 : 유전자변형 생물체(LMO)를 중심으로

이이,정찬문,이학수,신주식 충북대학교 연초연구소 2006 煙草硏究 Vol.20 No.-

현대 분자생물학의 발달에 따른 유전자변형 생물체의 개발은 시간과 경제적으로 전통적인 육종의 한계를 많이 극복하고 있으며 세계적으로 유전자변형생물체의 개발이 빠른 속도로 진행되고 있다. 유전자의 변형에 따른 환경의 파괴, 인체에 대한 위해 가능성 때문에 바이오안전성의정서가 채택되는 등 세계적으로 바이오안전성에 대한 관심이 증가하고 있다. 바이오안전성은 유전자특성분석, 환경위해성평가, 인체위해성평가 등 3단계의 평가에 의해서 이루어지며 최종적으로 인체와 환경에 해를 끼칠 가능성이 있는 유전자변형생물체를 규제하기 위해서 이루어진다. 우리나라도 최근에 바이오안전성에 대한 관심이 증대되면서 바이오안전성 평가체계가 확립중이다. The development of molecular biology enabled us to overcome the restrictions of conventional breeding system and the number of genetically modified organisms are dramatically increasing. The possibility of the genetically modified organism's risk on human health and environment caused concerns on the biosafety. Biosafety test contains gene characteristics analysis, health safety test, and environmental risk test. The final aim of these tests is to prevent the commercialization of genetically modified organism which have possible risk on human health and environment. Biosafety evaluation system is being built in Korea.

폐 내 병변으로 인한 소아 급성 호흡부전의 원인 질환과 예후

이혜영,박지숙,최희라,서지현,김점수,임재영,최명범,박찬후,우향옥,윤희상 대한소아과학회 2004 小兒科 Vol.47 No.5

BaTiO₃단결정의 전왜효과에 관한 연구

이수대,이찬구,손종윤 慶南大學校 附設 工業技術硏究所 1999 硏究論文集 Vol.17 No.-

BaTiO₃단결정의 전왜효과와 압전특성을, 임의의 방향으로 가하는 전기장에 대한 역압전변형분포의 SGP(stereographic projection) 그림과 전왜효과에 의한 전왜변형분포에 대한 SGP그림을 그려 분석하였다. 상유전상에 있을 때 인가된 전기장에 의한 변형은 전왜효과에 의해서만 생기며. 강유전상에 있을 때 인가된 전기장에 의한 변형은 역압전효과와 전왜효과의 중첩 영향을 받는다. 각 상에서의 종적 변형과 횡적 변형의 최대 값과 최소 값을 갖는 방향 및 크기를 구하였고 압전변형과 전왜변형의 크기가 같은 등변형전기장을 계산하였다. The electrostriction and the piezoelectric properties of BaTiO₃ single crystal were analyzed by the SGP(stereographic projection) diagram of the electrostriction strain and the converse piezoelectric strain to the applied electric field. In paraelectric phase the strain is only due to the electrostriction, but in ferroelectric phase it is affected by the converse piezoelectric effect with the electrostriction effect. We obtained the directions and the magnitudes with the maximum value and the minimum of the longitudinal strain and the transversal strain at each phase, and calculated the electric field of the equivalent strain which has the same magnitude of the piezoelectric and the electrostriction.

황사의 확산예측을 위한 기상정보의 시간해상도에 관한 수치연구

이순환,곽은영,류찬수,문윤섭 한국환경과학회 2004 한국환경과학회지 Vol.13 No.10

In order to predict air pollution and Yellow-sand dispersion precisely, it is necessary to clarify the sensitivity of meteorological field input interval. Therefore numerical experiment by atmospheric dynamic model(RAMS) and atmospheric dispersion model(PDAS) was performed for evaluating the effect of temporal and spatial resolution of meteorological data on particle dispersion. The results are as follows: 1) Base on the result of RAMS simulation, surface wind direction and speed can either synchronize upper wind or not. If surface wind and upper wind do not synchronize, precise prediction of Yellow-sand dispersion is strongly associated with upwelling process of sand of particle. 2) There is no significant discrepance in distribution of particle under usage of difference temporal resolution of meteorological information at early time of simulation. but the difference of distribution of particles become large as time goes by. 3) There is little difference between calculated particles distributions in dispersion experiments with high temporal resolution of meteorological data. On the other hand, low resolution of meteorological data occur the quantitative difference of particle density and there is strong tendency to the quantitative difference.

PLZT 세라믹을 이용한 SAW Filter의 특성

이수대,이찬구,안형주,문준규 경남대학교 신소재연구소 2003 신소재연구 Vol.15 No.2

현재 사용되고 있는 SAW 필터 기관물질 중 세라믹 기관은 다공정과 생산에 따른 물성의 재현성 부족을 제외한다면 단결정 기관에 비해 생산단가의 저렴화, 생산공정의 단순화 및 대량생산의 측면에서는 훨씬 경쟁력이 있다. 따라서 본 연구에서는 고온 압축성형법에 의해 1235℃의 온도와 200㎏/㎠의 압력에서 30시간동안의 제조조건에서 조성비 x/65/35(x=5-8)인 PLZT 세라믹 기관들을 제조하여 SAW필터로써의 응용가능성을 살펴보았다. 각 조성별 유전을, SAW 전파 속도, 기계결합계수 등을 측정 비교한 결과 SAW 필터 기관물질로 가장 적합한 조성비는 7/65/35였다. 이 조성비로 제작한 SAW 필터에서 상대적으로 양호한 출력 특성을 얻었고 단결정 기관으로 제작한 SAW 필터에 버금가는 특성을 확인할 수 있었다. The single crystal substrate has been the industrial standard for the design of SAW filters for a long time. However, the ceramics substrate had more simple fabricated process than the crystal. In this study, it was attempted that single crystal was substituted for PLZT(La/Zr/Ti = x/65/35, x=5∼8 at. %) ceramics. The ceramics substrate was prepared by hot-pressed method at temperature 1235C, 200㎏/㎠, 30hrs. The real permittivity, SAW velocity and mechanical coupling factor of PLZT ceramics were measured for a different La mol% content. In the results, we could observed that 7/65/35 composition SAW filter had a good characteristics of frequency response.

우리나라 南西海岸의 海陸風 探究 : Centering around the city of Mokpo and Seochon

李承姬,柳贊洙 조선대학교 사범대학 부설 교과교육연구소 2000 敎科敎育硏究 Vol.3 No.1

Geographically, Three sides of Korea are surrounded by the sea(that is, the Korean Peninsular). Accordingly, the envioronment of our country has been greatly affected by the sea. For this study and taking an observation with AWS. I've selected the Mokpo city to which Taebul industrial complex is adjacent and Seochon, the central part of the western coast to which Asan industrial complex is adjacent. I've utilized the data on the change of the direction and the speed of the breeze of two areas(Mokpo and Seochon) through classifying all the data of the annual breeze into a daily unit, a monthly unit and a seasonal unit. As a result, there was a more vivid sea and land breeze character in Seochon area than in Mokpo area is due to the Mokpo's geographical location. In the frequency of breeze direction, NNW direction which occupied 27% of the whole was prevailing and in the frequency of breeze speed, the range of 0.3∼3.3㎧ appeared frequently, and it showed 48.9%. According to rarity analysis on the relations between breeze direction and breeze speed, a correlation coefficient was 0.56∼0.91 and through it. I could figure out correlation of breeze direction and breeze speed. But iti is matter of regret that this study has a statistical analytic basis mainly, so, from noe on, I intend to do profound research on factors which cause the change of sea and land breeze and I'd like to develop them to be processed as enviornmental factors.