• 제목/요약/키워드: Plant Pattern

검색결과 1,450건 처리시간 0.034초

아황산에 의한 상치 잎구조의 변색패턴 (Discoloration Pattern of Lettuce Leaf Disks as Influenced by Sulfur Dioxide)

  • 이미순
    • Journal of Plant Biology
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    • 제18권1호
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    • pp.1-10
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    • 1975

  • Development of a model system for mode of action studies of $SO_2$ was attempted with a plant tissue. Leaf disks, 1.0cm diameter, cut from the lamina of lettuce leaves, were floated on the testing medium and placed in light or dark condition to investigate the discoloration pattern with various sources of $SO_2$. Discoloration of leaf disks tended to be more serious with higher concentrations of $SO_2$ and on exposure to the light. Leaf disks were more severely discolored at lower pH with constant SO2 concentration. These discoloration patterns were highly reproducible and similar in all sources of $SO_2$. Spectrophotometric evidence suggested that light-mediated discoloration of leaf disks in the presence of $SO_2$ might occur mainly through chlorophyll ${\alpha}$ degradation.

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#3 #4호기 보령화력발전소 기초공사 정밀발파공법 (Cautious Blasting Works on the Po-Ryong Power Plant #3 #4 Foundation)

  • 허진
    • 기술사
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    • 제21권4호
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    • pp.12-18
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    • 1988

  • On the foundation work of Po-Ryong power plant #3 & #4. It was 30meters away from the running states of #1 & #2 plant site. In order to protect the #1 & #2 power plant facilities & factory structure. Allowable vibration was required below 0.07 gal. Therefore, it had to set up the anti-vibration trench to reduce the vibration reference and secondary. I applied the low gravity and low velocity explosives with M/S delay caps by cautious blasting pattern.

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벼멸구의 섭식 패턴과 벼 조직내에서 구침의 이동 (Electrical Feeding Patterns and Stylet Movement of Rice Brown Planthopper, Nilaparvata lugens(Homoptera), in the Rice Tissues)

  • 윤영남;장영덕
    • 한국응용곤충학회지
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    • 제32권2호
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    • pp.208-217
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    • 1993

  • 벼멸구의 식이행동을 전기적인 측정 방법을 통하여 관찰하였으며 이들을 각각의 특성에 따라 분류하였고, 그결과 type P, S, SB, O, X, Ph 등 6가지로 나누어 볼 수 있었다. Type P는 벼멸구가 식물에체 처음 접근하여 기주를 탐색할 때 볼 수 있었으며, 구침을 조직내에 찔어 넣거나조직내에서 이동할 때에는 type S를 관찰 할 수 있었다. 또한 매우 규칙적인 S패턴은 체관부에 구침을 찔어 넣을때만 볼 수 있어 type SB로 따로이 분류하였다. X와 Ph패턴은 각각 물관부와 채관부에서 흡즙할 때 나타나는 것을 확인하였으며, type O는 기타 다른 조직내에 구침이 있을 때 이러한 전기적 패턴을 보여 주었다. 이러한 각각의 전기적 패턴을 확인하기 위하여 원하는 패턴이 나타날 때에 식흔이 있는 벼의 조직을 잘라서 현미경으로 관찰하였으며, 각각의 타입별로 벼멸구 배설물을 측정하였다.

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Difference of Physiochemical Characteristics Between Citrus Bacterial Canker Pathotypes and Identification of Korean Isolates with Repetitive Sequence PCRs

  • Lee, Yong-Hoon;Lee, Seung-Don;Lee, Dong-Hee;Yu, Sang-Mi;Lee, Jung-Hee;Heu, Sung-Gi;Hyun, Jae-Wook;Ra, Dong-Soo;Park, Eun-Woo
    • The Plant Pathology Journal
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    • 제24권4호
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    • pp.423-432
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    • 2008

  • The difference of carbon source utilization and fatty acid composition between the pathotypes of Xanthomonas strains, which causing citrus bacterial canker was compared, and the physiochemical characteristics were used to analyze relationship of the strains for the first time. The pattern of several carbon sources utilization and fatty acids composition reliably discriminated the pathotypes of Xanthomonas strains. The dendrogram which was constructed by 95 carbon source utilization profiles differentiated X. axonopodis pv. citri A, $A^*$ and $A^w$ from the other pathotypes. When the dendrogram was drawn by combined analysis of carbon source utilization pattern and fatty acid composition, X. axonopodis pv. aurantifolii B, C and X. axonopodis pv. citrumelo formed a distinct cluster. The difference of carbon source utilization and fatty acid composition could be used effectively for the identification of pathotypes of citrus bacterial canker. The physiochemical characteristics strongly indicated that the strains isolated in Korea belong to X. axonopodis pv. citri A type. The cluster analysis by the band patterns of ERIC-, BOX- and REP-PCR allowed the discrimination of the pathotypes isolated from Korea. However, the rep-PCRs could not differentiate X. axonopodis pv. citri A types from $A^*$ and $A^w$ types. The overall results of metabolic profiles and rep-PCRs strongly indicated that the Korean isolates are X. axonopodis pv. citri A type.

  • https://doi.org/10.5423/PPJ.2008.24.4.423 인용 PDF KSCI

인도네시아 전통직물 디자인의 패턴 분석 (Analysis of Pattern for Indonesian Traditional Textile Design)

  • 구희경
    • 한국의상디자인학회지
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    • 제7권3호
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    • pp.83-94
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    • 2005

  • This paper is to analyze patterns for Indonesian traditional textiles. Ikat is the resist-dyeing process in which designs are reserved in warp or weft yams by tying off small bundles of threads with fiber resists to prevent the penetration of dye. Batik is the technique applying a wax resist before dyeing to form a pattern in negative. Ikat and batik are the most renowned textile arts of Indonesia. Patterns are classified as geometric pattern, plant pattern, animal pattern. Also this paper discusses the origins of ikat and batik. Therefore this Paper proposes the classification and feature extraction of ikat and batik patterns. The results of this study can be effectively applied to develop competitive pattern design for Indonesian textile market.

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