새삼(Cuscuta japonica)의 흡기(吸器)에 관한 연구(硏究) II. 숙주조직(宿主組織)에 침투(侵透)한 흡기(吸器)

이재두,이규배,Lee, C.D.,Lee, K.B. 한국현미경학회 1985 Applied microscopy Vol.15 No.2

The portion of Cuscuta japonica haustorium which lies internal to the host tissues, the endophyte, was examined at the ultrastructural level. The endophyte consisted of mainly small parenchymatous cells and large, slightly elongate cells at the tip. The tip cells were characterized by the presence of large and lobed nucleus, several small vacuoles, dense cytoplasm, abundant rough endoplasmic reticulum, dictyosomes, and mitochondria, and thus suggested to have a high metabolic activity. The shape, arrangement, and cytological characteristics of the parenchymatous and tip cells consisting the endophyte were very similar to those of the dividing cells and idioblasts, respectively, which appeared in the endophyte primordium of the upper haustorium. The tip cells with the thickened-apical wall were observed to grow intrusively through the host cell walls and to engulf the remnants of the degenerated host cells. In the former case intrusive growing cell was regarded to develop into the filamentous cell, the hypha. Plasmodesmata through the cell wall were not observed between host and parasite cells. Some host cells that in contact with the penetrating tip cells of the endophyte, showed the degenerating features such as a loss of cytoplasm, a beaded fashion of small vesicles, and deformation of chloroplasts.

인삼약초 유통지원 정책의 현황과 개선방안

이재두,Lee, Jae-Du 한국인삼전략화협의회 2006 인삼·약초 Vol.4 No.1

인삼(人蔘) Callus세포(細胞)의 미세구조적(微細構造的) 비교(比較) 연구(硏究)

이재두,이규배,Lee, Chai-Doo,Lee, Kyu-Bae 한국현미경학회 1978 Applied microscopy Vol.8 No.1

A comparative investigation of fine structure of callus cells derived from tissue culture of Panax ginseng was made by electron microscope. Callus was consisted of large superficial cells and small inner zone cells derived from shoot apex tissue cultured for 16 weeks. Large superficial cells were contained the clusters of starch grains surrounded by a double plastid membrane. Especially, electron dense particles were deposited just inside and outside of plastid membrane and also deposited on mitochondria-like and endoplasmic reticulum-like structures. Crystalline body was also found in superficial cells. Small inner zone cells were characterized by presence of proplastids sheathed by short endoplasmic reticulum profiles. presence of spiral configuration of ribosomes and absence of crystalline body. Organ primordia was consisted of a dense cytoplasm and notable nucleate cells derived from nodal tissue cultured for 67 weeks. Proplastids containing starch grains and crystalline bodies were frequently observed; starch grains are of small quantity and does not form the clusters as in inner zone cells; hexagonal crystalline body itself does not have always limiting membrane. Remarkably. in a few cells of primordia, particles resembling the presumptive virus were observed mainly in condensed nuclear chromatin and also in cytoplasm, in mitochondrion-like organelle.

실새삼(Cuscuta australis R. Brown) 흡기세포(吸器細胞)의 미세구조(微細構造)

이재두,이규배,Lee, Chai-Doo,Lee, Kyu-Bae 한국현미경학회 1986 Applied microscopy Vol.16 No.2

Ultrastructures of the large and elongated cells (idioblasts) in the haustorium of a parasitic angiosperm, Cuscuta australis R. Brown growing on the host plant, Trifolium repens L. were investigated by the electron microscopy. The idioblasts were characterized by the presence of a large nucleus, small vacuoles, and dense cytoplasm including a number of various cell organelles such as ribosome, rough endoplasmic reticulum(r-ER), mitochondrion, dictyosome, proplastid, multilamellar structure(MLS), microfilament bundle(MFB), and cytosegresome. Therefore, it is suggested that the idioblasts are metabolical1y very active. Particularly, MLS, MFB, and cytosegresome observed in this study did not appear in the haustorial cells of the other parasitic angiosperms. MLS was transformed into vacuole and also incorporated with cell wall. MFB composed of microfilaments, about each 7.5 nm in diameter, was observed in nucleus and also cytoplasm. Some types of MFB were distinguished on the basis of arrangement of microfilaments. A part of cytoplasm sequestered by stacked cisternae of smooth ER(s-ER), cytosegresome, was altered into a vacuole which was formed by digestion of the sequestered cytoplasm and of cisternae of s-ER. Cell organelles such as MLS, MFB, and cytosegresome were discussed in relation to the metabolic control of the idioblasts.

공공분야 전자상거래 시범사업의 정보기술.감리 관점의 사례분석 연구

이재두,Lee, Jae-Du 한국정보처리학회 2007 정보처리학회논문지D Vol.14 No.3

As the roles and interests or audit are growing with ITA law in operation from 2006, the interests about the way which makes project qualifies to improve is increasing through it. In this point of view, this study is trying to find the issue that can promote the efficiency and effectiveness of IT projects decreasing some trials and errors relevant to IT, when government or some public agency field promote e-Business. For this purpose, this study analyze IT application result about e-business project in some public agency field. And the case study will be checked out and evaluated by the quality-contents analysis study method on the point of view of the IT audit. The study result is expected to provide a more practical policy implications than traditional researches based on specific-element technology or business process model by making use of major review areas and improvement methods. In thus, it is expected that it will be helpful not only references of IT quality improvement but also policy promotions when the public promotes IT projects related with e-Business. '06년부터 시행된 ITA법에 따라 감리의 역할과 관심이 증가하고 있는 가운데 이를 통해 사업품질을 향상할 수 있는 방안에 대해서도 관심이 커지고 있다. 이런 관점으로 본 연구는 공공부문에서 전자상거래를 추진할 때 정보기술과 관련된 시행착오를 줄이고 정보화 사업의 효율성 및 효과성을 제고를 할 수 있는 시사점을 찾고자 한다. 이를 위해 공공 부문에서 전자상거래와 관련된 사업을 대상으로 정보기술의 적용 결과를 분석한다. 연구사례는 정보기술 감리 관점에서 질적 내용분석의 연구방법으로 살펴보고 정리한다. 연구결과는 중점검토분야 및 개선사항을 적절히 활용함으로써 기존의 특정 요소기술이나 업무모델을 위주로 한 연구보다 실질적인 정책적 함의를 더 제공할 수 있으리라 기대한다. 그리고 공공 분야에서 전자상거래관련 정보화 사업을 추진할 때 정보기술의 품질 향상을 위한 참조뿐만 아니라 정책추진을 하는데도 도움을 줄 것으로 기대한다.

Ni/Cu 금속전극 태양전지의 Ni electroless plating에 관한 연구

이재두,김민정,권혁용,이수홍,Lee, Jae-Doo,Kim, Min-Jeong,Kim, Min-Jeong,Lee, Soo-Hong 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.4

The formation of front metal contact silicon solar cells is required for low cost, low contact resistance to silicon surface. One of the front metal contacts is Ni/Cu plating that it is available to simply and inexpensive production to apply mass production. Ni is shown to be a suitable barrier to Cu diffusion into the silicon. The process of Ni electroless plating on front silicon surface is performed using a chemical bath. Additives and buffer agents such as ammonium chloride is added to maintain the stability and pH control of the bath. Ni deposition rate is found to vary with temperature, time, utilization of bath. The experimental result shown that Ni layer by SEM (scanning electron microscopy) and EDX analysis. Finally, plated Ni/Cu contact solar cell result in an efficiency of 17.69% on $2{\times}2\;cm^2$, Cz wafer.

조선 후기 속현 단위 읍지 편찬의 배경과 목적- 대구 화원현 읍지 『금성집언』(1788)을 중심으로 -

이재두 ( Lee Jae-doo ) 대구사학회 2016 대구사학 Vol.125 No.-

이 글은 1788년(정조 12) 이수완(李壽完)이 편찬한 화원현 읍지인 『금성집언(錦城輯言)』을 분석하였다. 조선 건국 이후 성주목에 속하였던 화원현(화원 8방)은 1685년(숙종 11) 경상 감영 소재지인 대구도호부에 속하게 되었다. 이로부터 100여년이 지난 1788년(정조 12) 화원현의 사족인 이수완은 이 지역의 읍지인 『금성집언』을 편찬하였다. 이 책은 일종의 속현(屬縣) 지역에서 편찬한 읍지라는 점에서 그 가치와 의의가 크다. 이보다 앞선 1749년(영조 25) 권상일이 『상산지』를 증보하면서, 상주목 속현인 산양현(산양 5면)의 읍지인 『산양지』 편찬을 시도한 기록이 보이나 현전 여부를 확인할 수 없다. 다만 이 무렵 『상산지』 증보 과정에서 나온 것으로 보이는 『단밀현지』가 남아있다. 『금성집언』은 성주읍지인 『경산지』의 화원현 관련 내용을 위주로 하였으며, 『여지도서』와 『대구읍지』의 구성 항목에 따라 이들 읍지에서 누락한 내용을 중심으로 보완하였다. 이 책은 속현 사족(士族)들이 중심이 되어 읍지 편찬 과정에서 자신들의 지역이 소외된 것에 반발하면서, 지역 사족의 현양(顯揚)과 영향력 확대를 도모하고, 지역의 정체성(正體性)을 찾기 위해 편찬한 읍지이다. 『대구읍지』와 비교해 보면, 방리(坊里)를 비롯하여 명승(名勝), 패설(稗說), 이문(異聞) 등 화원 지역에 전해 내려오는 이야기[故事]가 풍부하게 실려 있다. 그러나 의욕과는 달리 수록된 인물들은 대부분 『대구읍지』 편찬 기준에는 미흡한 화원현 지역 단위의 인물들이었다. 일연이나 이숭인, 정구 등 전국적인 인물을 발굴하려는 노력도 부족하였다. 18세기 말 당시의 지역 사회 사족들을 중심으로 자신들과 관련 있는 인물을 중심으로 수록하고자 한 인식의 한계를 드러냈다. This paper analyzed Geumseong Jipeon(『錦城輯言』), the local record of Hwawon-hyeon(花園縣), compiled by Lee Suwan(李壽完) in 1788(the 12th year of King Jeongjo). Hwawon-hyeon used to belong to Seongju-mok(星州牧) since the founding of the Joseon Dynasty, but in 1685(the 11th year of the King Sukjong) came to belong to Daegu-dohobu(大丘都護府), where the Gyeongsang-do government office was located. A hundred years since then in 1788(the 12th year of the King Jeongjong) Lee Suwan, the Hwawon-hyeon gentry compiled Geumseng Jipeon, the local record of Hwawon area. This book derive sits value and significance in that it was the local record compiled in Sokhyeon(屬縣), the small administrative division. There is a record prior to this time in 1749(the 25th year of the King Yeongjo) that while editing Sangsan Ji(『商山誌』), Gwon Sangil(權相一) attempted to compile Sanyang Ji, the local record of Sanyang-hyeon(山陽縣), the Sangju-mok(尙州牧) Sokhyeon, but it does not exist. There exists only Danmil-hyeon Ji(『丹密縣誌』), which seems to have been produced while supplementing Sangsan Ji. The main contents of Geumseong Jipeon focused on Hwawon-hyeon related topics in Gyeongsan Ji(『京山志』), the Seongju Eupji(the Seongju town record) and supplemented the omitted contents of local records in the Yeojidoseo(『輿地圖書』, the national Eupji) and Daegu Eupji(『大丘邑誌』) according to their categories. Geumseong Jipeon was compiled mainly by the Sokhyeon gentry who rebelled because it felt its area was being ignored while the local records were compiled. By compiling its own local record, the gentry wanted to promote its local gentry family names while attempting to expand their influence and promote their local identity. Compared to Daegu Eupji, the Gemeseong Jipeon is rich with many passed-down stories of the Hwawon area including the village scenic spots, mysterious and interesting folk tales and rumors. However, against the original enthusiasm, the people in the record were limited to local figures in the Hwawon-hyeon which did not satisfy the Daegu Eupji compiling standards. It was lacking in the attempt to discover the national figures such as Ilyeon(一然), Lee Sungin(李崇仁) and Jeong Gu(鄭逑). This shows its limited judgement in trying to discover the local figures by focusing solelyon the local community.

Isolation of Antifungal Substances Produced by Bacillus subtilis and their Biocontrol Effect on the Late Bllght in Pepper (Capsicum annuum L.)

Hyun-Jin Lee(이현진),Syeng-Jae Lee(이승재),Jai-Du Lee(이재두),Ra-Mi Lee(이라미),Young-Cheol Kim(김영철),Yong-Woong Kim(김용웅),Kil-Yong Kil(김길용) 한국토양비료학회 2003 한국토양비료학회 학술발표회 초록집 Vol.2003 No.5

Bacillus subtilis생성 길항물질의 분리와 고추역병에서의 효과

이현진 ( Hyun Jin Lee ),이승재 ( Syeng Jae Lee ),이재두 ( Jai Du Lee ),이라미 ( Ra Mi Lee ),김영철 ( Young Cheol Kim ),김용웅 ( Yong Woong Kim ),김길용 ( Kil Yong Kil ) 한국토양비료학회 2003 한국토양비료학회 학술발표회 Vol.2003 No.-

전자정부 표준프레임워크의 해외 확산 사례연구

이재두(Jae-Du Lee) 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.6