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소나무 ( Pinus densiflora S . et Z . ) 압축이상재의 (壓縮異常材) 방사조직 특성에 관한 해부학적 연구
정연집(Youn Jib Chung),이필우(Phil Woo Lee) 한국산림과학회 1989 한국산림과학회지 Vol.78 No.2
This experiment was executed to investigate and compare qualitative and quantitative anatomical features in compression wood, opposite wood, and side wood formed in a bent stem, a straight branch, and an exposed horizontal root of Korean red pine(Pinus densiflora S. et Z.). The respective four discs containing compression wood taken at 20cm interval both in stem and branch as well as a disc containing well developed compression wood from horizontal root were analyzed. Percentage of compression wood and eccentricity showed decreasing tendency with the increasing distance in height direction of stem and length direction of branch. The qualitative anatomical features of compression wood appeared to differ from those of side and opposite wood in very gradual tracheid transition from earlywood to latewood, roundish tracheid shape on cross surface, tracheid distortion at tip on radial surface, existence of intercellular space, and helical cavity` in tracheid wall. And the differences in these qualitative features among the compression wood, opposite wood, and side wood became less intensive with the decreasing trends in percentage of compression wood and eccentricity. The quantitative anatomical features in compression wood also appeared to be wider in that respective widths of fusiform and uniseriate ray than those of opposite and side wood, but the heights of fusiform and uniseriate ray in compression wood were smaller than in opposite and side wood. The number of horizontal resin canal(fusiform ray) and uniseriate ray, however, showed no differences among the compression wood, opposite wood, and side wood. And the number of vertical resin canal in unit area, 4π㎟ of compression wood was fewer than that in opposite wood, whereas numerous vertical resin canals contained in a growth ring. These rays of compression wood seemed to be characterized by smaller height and wider width than those of opposite and side wood.
Perforated Ray Cells in Korean Celastraceae and Oleaceae
( Young-geun Eom ),( Youn-jib Chung ) 한국목재공학회 1998 목재공학 Vol.26 No.2
Ray cells with perforations are recorded for the first time in the Korean Celastraceae species of Euonymus sieboldiana and Tripterygium regelii and the Oleaceae species of Abeliophyllum distichum,Forsythia ovata, Ligustntm japonicutn, and Osmanthus heterophylla. All these anomalous ray cells have simple perforations, and the vessel elements of all these species have simple perforation plates. Thus, in the Korean Celastraceae and Oleaceae, the perforations of ray cells appear to be identical with the types of perforation plates in the vessel elements of the same wood. The diagnostic value of the perforated ray cells is also discussed.
격자형 철조망의 부분적인 억압으로 편심생장한 족제비싸리(Amorpha fruticoas L.) 팽창조직의 해부학적 특성
李弼宇,鄭然楫 서울대학교 농과대학 농업개발연구소 1994 서울대농학연구지 Vol.19 No.1
The eccentric overgrowth tissue and the normal tissue of Amorpha fruticosa L. were analysed in anatomical aspects. The eccentric overgrowth tissue appeared to differ from normal tissue in smaller tangential pore diameter of springwood, more vessel cluster and multiseriate ray, larger formation of latewood, and occurrence of discontinuous annual ring. As the results of cluster and multiseriate ray, the formation of eccentric overgrowth tissue seems to be needed increase of cluster and multiseriate ray in view of efficient and safe conduction of vessels and supply of nutrient necessary for active division of initial cells in vascular cambium cope with the partial oppression of wire latticed entanglements.
옻나무(Rhus verniciflua Stokes) 漆液溝의 解剖學的 特性
이필우,정연집 서울대학교 농과대학 농업개발연구소 1992 서울대농학연구지 Vol.17 No.2
The light microscopic anatomical characteristics of secretory canals in Rhus verniciflua Stokes grown in Korea were investigated. Secretory canals surrounded by 2-3 rows of concentric or more or less flattened secretory(epithelial) cells were distributed in secondary phloem and arranged in tangential bands. Radial and tangential diameter of canal were 30∼80㎛(average, 57㎛) and 40∼160㎛(average, 90㎛), respectively. Canal frequency, number of canals per 1㎟, was 5∼11(average, 7.85).
한국산 매자나무과 및 대극과 활엽수재의 천공을 지니는 방사조직 세포
엄영근,정연집 한국임학회 1999 한국산림과학회지 Vol.88 No.3
In present study, perforated ray cells were recorded for the first time in the species of Berberis amurensis and Berberis poiretii (Berberidaceae) and Mallotus japonicus and Sapium japonicum (Euphorbiaceae) that grow in Korea. These ray cells had simply perforations in the above species which had vessel elements with simple perforations, In Korean Berberidaceae and Euphorbiaceae, thus, the perforation types of perforated ray cells appeared to be identical with the types of perforation plates in the vessel elements is the same wood.
소나무 (Pinus densiflora S . et Z .) 수간내(樹幹內)에 양분형성된 압축이상재(壓縮異常材)와 그 사이에 존재하는 간재의 해부학적 특성
이필우,정연즙 한국목재공학회 1988 목재공학 Vol.16 No.2
Anatomical characteristics on abnormal type of bisected compression woods and light colored wood intervened between these dark colored compression woods on under part and their respective opposite woods on upper parts of cross section in Fines densiflora S. et Z, stem were compared through optical microscopic investigation, and the obtained results were summarized as follows: 1. Tracheid length increased linearly as the number of rings from the pith increases in all investigated parts, but increasing tendency in tracheid length was similar within bisected two compression woods and their opposite woods. 2. Tracheids were the shortest in bisected two compression woods and tracheid length in intervened wood between these two compression woods was longer than in compression woods but shorter than in the opposite woods. 3. Bisected two compression woods and intervened wood between these two compression woods revealed similar features in tracheid transition from springwood to summerwood, intercellular space, tracheid entanglement, and cross sectional view of tracheid but spiral check was observed only in these two compression woods, therefore the intervened wood between these two compression woods disclosed. anatomical characteristics similar ta, not typical of, compression woods.
다래넝쿨의 壓迫에 의해 形成된 비목나무(Lindera erythrocarpa Makino) 膨脹組織의 解剖學的 特性
嚴永根,鄭然楫 國民大學校 山林科學硏究所 1996 山林科學 Vol.8 No.-
The swollen tissue and the opposite tissue in the opposite zone of swollen tissue formed in a stem of Lindera erythrocarpa by spiral oppression of a woody liana of Actinidia arguta are compared with normal tissue in the qualitative and quantitative anatomical aspects. The swollen tissue was less deviated from normal tissue in anatomical characteristics than opposite tissue, and thus opposite tissue appears to be more influenced by cambial activity than swollen tissue.
삼차신경초종의 외과적 치료 : Observations and Results of 16 Consecutive Cases
이정일,정희원,정영섭,김동규,김현집,최길수,한대희 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.8
A consecutive series of 16 patients with trigeminal neurinoma have been managed surgically at seoul National University Hospital duriny the last nine years. Five patients had tumors confined to the middle fossa arising from the trigeminal ganglion, four had posterior fossa tumors arising from the trigeminal root, and seven had "dumbbell" lesions extending above and below the tentorium. In four patients, tumor had also invaded cavernous sinus. A two stage operation was done in two cases with "dumbbell"-shaped tumors. A total tumor excision was achieved in ten patients ; all remain free of recurrence 4 77 months after surgery. A subtotal tumor excision was performed in six cases. There were no operative deaths nor major morbidity. Trigeminal nerve dysfunction persisted or was aggravated in ten cases. Six patients had preserved or improved the trigeminal function after treatment. Selection of the appropriate surgical approaches to the various types of tumor location and growth pattern was important for successful operations.