• Title/Summary/Keyword: 수직 포위

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Arthroscopic Vertical Enclosing Meniscus Suture -Technical Note- (관절경하 반월상연골의 수직 포위 봉합술 - 수술 수기 -)

  • Kim Jung-Man;Jahng Yoon-Jong
    • Journal of the Korean Arthroscopy Society
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    • v.7 no.2
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    • pp.230-232
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    • 2003
  • To avoid incomplete coaptation of the peripheral tear of the meniscus an arthroscopic vertical enclosing meniscus suture technique was developed. In this technique the meniscus was not penetrated with any instruments or suture materials. This technique seems to be simple and easy to learn and to practice.

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Improvement of Net Structure and Operating System in Purse Seine Fishery for Gizzard-shad, Konosirus Punctatns(I) -Underwater Geometry and Behaviour of fish School to the Net - (전어 선망 어구 및 조업 시스템 개발(I) -어구의 수중 형상 및 전어 어군의 대망 행동-)

  • 장덕종;신형호;김동수;김진건
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.38 no.2
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    • pp.156-163
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    • 2002
  • In order to development the construction and dimension of fishing gear for gizzard shad coastal purse seine, first of all investigated to the sinking speed and underwater geometry of net, behaviour of fish school to the net during the fishing operation In the field. The results obtained are summarized as follows; 1. Average sinking speed of net was 13cm/sec in bunt, 9.0cm/sec and 9.5cm/sec in 170m and 280m of center, 4.9cm/sec in end wing side, therefore was fastest in start of shooting and decreased gradually during the shooting process. 2. The most of leadline was reached in bottom from the shooting immediately to hauling time and the mean depth of timber bar used equipment for the escaping prevention of fish school was within the 2.7m. 3. The fish school of gizzard shad was appearanced higher density and remained to the most time in bottom than the surface and repeated to vortical movement, and its tendency to distinct in rapid time of tide current. 4. Behaviour of fish school in the net was showed to the vortical movement by sinking and rising immediately with the shooting of net and then divide with the two shape to follow round the wall of net and no patterns straightly movement in the net, and tendency easily catched in fish school of the wall of net. 5. Escaping of fish school in the gap of wing side was to busy after that seting the timber bar, therefore its function for escaping prevention of fish school was very lowed. 6. Escaping behaviour of fish school was differenced with the depth of fishing ground, the above 20m escaped to busy through the below in ledline because the sinking speed of fish school is fast than the net.