초음파 진동절삭의 특성에 관한 연구

이규배,이계철,임영호 한국정밀공학회 1993 한국정밀공학회 학술발표대회 논문집 Vol.1993 No.5월

고사리삼地下莖에서 有限 維菅束 形成層의 微細構造 및 組織化學

李圭培,蘇雄永 한국식물학회 1995 Journal of Plant Biology Vol.38 No.1

일본의 『새로운 歷史敎科書』에 대한 論考 : 歷史觀과 일본사 서술방식을 중심으로

이규배 탐라대학교 지역개발연구소 2007 지역개발연구 Vol.2 No.-

본고는 『새로운 역사교과서』 기저에 깔려 있는 역사관의 일부 특징을 밝히고, 『새로운 역사교과서』가 내포하고 있는 역사기술상의 몇 가지 문제점을 밝혀내는 것을 목적으로 한다. 이 교과서는 그 서문과 결론에서도 드러난 것처럼 일본적 특수사정을 강조하면서 패전의 상흔과 이에 기인했던 ‘自虐史觀’에서 벗어나 日本中心的인 역사인식을 갖는 것이 중요하다는 역사관을 기저에 깔고 있다. 천황가와 관련된 인물이나 국기 · 국가에 대한 역사기술에 적지 않은 지면을 할애하고 있는 것도 이와 깊은 관련이 있으며, 태평양전쟁과 관련된 일련의 역사기술에서 일본의 피해사실은 적나라하게 명시하면서 가해사실에 대해서는 추상적인 기술방식을 취하고 있는 것도 ‘自虐史觀’에서 ‘被害史觀’으로의 전환을 요구하는 이런 역사관과 밀접하게 연동되어 있다. 이런 측면에서 여타 역사교과서와의 비교에서도 그 확연한 차이를 확인할 수 있다. 이러한 역사관은 역사기술의 객관성을 상실케 하는 주요 요인으로 작용하고 있고, 특히 일본사에 대한 기술방식을 주변국가 및 세계사 기술방식과 비교했을 때 자명하게 드러나고 있다. 일본사의 대표적인 인물이나 사건을 기술하는 대목에서 오도된 방향으로 흘러가는 결과를 초래하고 있는 것도 이러한 역사관과 무관하지 않다. 그런 면에서 이 교과서는 한국사나 한일관계사 왜곡 이상으로 일본사에 대한 역사기술 방식에서도 적지 않은 문제점을 노정시키고 있다.

식물의 생장과 발달에 영향을 미치는 슈트 정단분열조직의 체제와 기능

이규배 한국식물생명공학회 2014 식물생명공학회지 Vol.41 No.4

In plants, a shoot apex has a small region knownas the shoot apical meristem (SAM) having a group of dividing(initiating) cells. The SAM gives rise to all the groundabovestructures of plants throughout their lifetime, and thus itplays important role in growth and development of plants. In plants, a shoot apex has a small region knownas the shoot apical meristem (SAM) having a group of dividing(initiating) cells. The SAM gives rise to all the groundabovestructures of plants throughout their lifetime, and thus itplays important role in growth and development of plants. This review describes theories to explain the SAM organizationand function developed over the last 250 years. Since in 1759German botanist C. F. Wolff has described firstly the SAM,in 1858 Swiss botanist C. Nägeli proposed the apical celltheory from the observation of a large single apical cell in theSAM of seedless vascular plants: however, this view wasrecognized to be unsuitable to seed plants. In 1868, Germanbotanist J. Hanstein suggested the histogen theory: this conceptsubdividing the SAM into dermatogen, periblem, and pleromewas unable to generally apply to seed plants. In 1924, Germanbotanist A. Schmidt proposed the tunica-corpus theory fromthe examination of angiosperm SAM in which two partsshow different planes of cell division: this theory was provedto be not suitable to gymnosperm SAM, not have stablesurface tunica layer. In 1938, American botanist A. Fosterdescribed zones in gymnosperm SAM based on the cytohistologicdifferentiation and thus called it a cytohistological zonationtheory. With works by E. Gifford, in 1954, this zonation patternwas demonstrated to be also applicable to angiosperm SAM. As another theory, in 1952 French botanist R. Buvat proposedthe méristème d’attente (waiting meristem) theory: however,this concept was confuted because of its negation of functionduring vegetative growth phase to central initial cells. Rescentstudies with Arabidopsis thaliana have found that formationand maintenance of the SAM are under the control of selectedgenes: SHOOTMERISTEMLESS (STM) gene forms the SAM,and WUSCHEL (WUS) and CLAVATA (CLV) genes functionin maintaining the SAM; signaling between WUS and CLVgenes act through a negative feedback loop. As another theory, in 1952 French botanist R. Buvat proposedthe méristème d’attente (waiting meristem) theory: however,this concept was confuted because of its negation of functionduring vegetative growth phase to central initial cells. Rescentstudies with Arabidopsis thaliana have found that formationand maintenance of the SAM are under the control of selectedgenes: SHOOTMERISTEMLESS (STM) gene forms the SAM,and WUSCHEL (WUS) and CLAVATA (CLV) genes functionin maintaining the SAM; signaling between WUS and CLVgenes act through a negative feedback loop. In plants, a shoot apex has a small region knownas the shoot apical meristem (SAM) having a group of dividing(initiating) cells. The SAM gives rise to all the groundabovestructures of plants throughout their lifetime, and thus itplays important role in growth and development of plants. This review describes theories to explain the SAM organizationand function developed over the last 250 years. Since in 1759German botanist C. F. Wolff has described firstly the SAM,in 1858 Swiss botanist C. Nägeli proposed the apical celltheory from the observation of a large single apical cell in theSAM of seedless vascular plants: however, this view wasrecognized to be unsuitable to seed plants. In 1868, Germanbotanist J. Hanstein suggested the histogen theory: this conceptsubdividing the SAM into dermatogen, periblem, and pleromewas unable to generally apply to seed plants. In 1924, Germanbotanist A. Schmidt proposed the tunica-corpus theory fromthe examination of angiosperm SAM in which two partsshow different planes of cell division: this theory was provedto be not suitable to gymnosperm SAM, not have stablesurface tunica layer. In 1938, American botanist A. Fosterdescribed zones in gymnosperm SAM based on the cytohistologicdifferentiation and thus called it a cytohistological zonationtheory. With works by E. Gifford, in 1954, this zonation patternwas demonstrated to be also applicable to angiosperm SAM. As another theory, in 1952 French botanist R. Buvat proposedthe méristème d’attente (waiting meristem) theory: however,this concept was confuted because of its negation of functionduring vegetative growth phase to central initial cells. Rescentstudies with Arabidopsis thaliana have found that formationand maintenance of the SAM are under the control of selectedgenes: SHOOTMERISTEMLESS (STM) gene forms the SAM,and WUSCHEL (WUS) and CLAVATA (CLV) genes functionin maintaining the SAM; signaling between WUS and CLVgenes act through a negative feedback loop.

잊혀진 주제들 - 4·3연구노트

이규배 제주4.3연구소 2022 4.3과 역사 Vol.22 No.-

Ultra-sensitive detection of antigen using functionalized liquid crystal droplets

이규배,강인규,위에 환 한국고분자학회 2015 한국고분자학회 학술대회 연구논문 초록집 Vol.2015 No.10

Detection of antigen molecules using antibody-anchored liquid crystal microdroplets

이규배,권기완,강인규 한국고분자학회 2015 한국고분자학회 학술대회 연구논문 초록집 Vol.2015 No.4

Defense response of resistant host Impatiens balsamina to the parasitic angiosperm Cuscuta japonica

이규배,Judith A. Jernstedt 한국식물학회 2013 Journal of Plant Biology Vol.56 No.3

The response of the stem of a resistant host (Impatiens baslamina) to infection by the parasitic flowering plant Cuscuta japonica was studied with light and electron microscopy. The intra- and interfascicular cambial cells in the host stem first reacted to the penetrating upper haustorium by dividing, and the differentiation of the host xylem (vascular) tissues proceeded toward interfascicular areas from vascular bundles. When the host vascular tissue was invaded by the endophyte (haustorial portion in the host stem), the host xylem was displaced, and host vessels became occluded with parenchyma cells, resulting in tyloses. As the parasitism progressed, areas of the host stem penetrated by the endophyte became swollen via secondary growth and cell division in the parenchymatous cortex, pith, and interfascicular areas. During this intrusion by the endophyte, darkly stained necrotic reactions were detected at the interface between the host tissue and the invading endophyte. The results suggested that in the host tissues penetrated by the parasite, the formation of secondary tissue and swellings caused by active cell division of ground tissue and host vessel occlusion by tyloses constitute the host structural defense against the parasite.

奇生顯花植物의 吸氣 構造에 관하여

李圭培 한국식물학회 1992 Journal of Plant Biology Vol.35 No.2

Structure and Development of the Endophyte in the Parasitic Angiosperm Cuscuta japonica

이규배 한국식물학회 2009 Journal of Plant Biology Vol.52 No.4

The endophyte, that is, the haustorial part within the tissues of the host plant Impatiens balsamina, of the parasitic angiosperm Cuscuta japonica was studied with light and electron microscopy. The endophyte consisted mainly of vacuolated parenchymatous axial cells and elongate, superficial (epidermal) cells. Then the elongate, epidermal cells separated from each other and transformed into filamentous cells, called searching hyphae. The hyphae grew independently either intercellularly or intracellularly in the host parenchyma. The apical end of the hyphal cells was characterized by conspicuous, large nuclei with enlarged nucleoli and very dense cytoplasm with abundant organelles, suggesting that the hyphal cells penetrating host tissue were metabolically very active. Numerous osmiophilic particles and chloroplasts were noted in the hyphae. The osmiophilic particles were assumed to be associated with elongation of the growing hyphe. Plasmodemata connections between the searching hyphal cells of the parasite and the host parenchyma cells were not detected. Hyphal cells that reached the host xylem differentiated into water-conducting xylic hyphae by thickening of the secondary walls. A xylem bridge connecting the parasite and the host was confirmed from serial sections. Some hyphal cells that reached the host phloem differentiated into nutrient-conducting phloic hyphae. Phloic hyphae had a thin layer of peripheral cytoplasm with typical features of sieve-tube members in autotrophic angiosperms, i.e., parallel arrays of smooth endoplasmic reticulum, mitochondria, and plastids with starch granules. Interspecific open connections via the sieve pores of the host sieve elements and plasmodesmata of the parasite phloic hyphae were very rarely observed, indicating that the symplastic translocation of assimilate to the parasite from the host occurred.