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Distribution of Whales and Dolphins in Korean Waters Based on a Sighting Survey from 2000 to 2010 (목시조사(2000-2010)에 의한 한국 연안 고래류의 종류 및 분포)

  • Sohn, Hawsun;Park, Kyum Joon;An, Yong Rock;Choi, Seok Gwan;Kim, Zang Geun;Kim, Hyun Woo;An, Du Hae;Lee, Young Ran;Park, Tae-Geon
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.45 no.5
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    • pp.486-492
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    • 2012
  • In the late 1970s, the National Fisheries Research & Development Institute (NFRDI) started cetacean research to submit the Korean whale catch record to the International Whaling Commission. This continued until the moratorium on commercial whaling in 1986. The NFRDI resumed cetacean research with a pilot whale sighting survey in 1999. Subsequently, the NFRDI has conducted 53 cetacean sighting surveys within the Korean exclusive economic zone between 2000 and 2010. The surveys took a total of 760 days and cruising for 23,866 nautical miles. The finless porpoise Neophocaena asiaeorientalis was sighted most frequently (735 times), followed by the minke whale Balaenoptera acutorostrata (396 times), the long-beaked common dolphin Delphinus capensis (102 times), and the Pacific white-sided dolphin Lagenorhynchus obliquidens (27 times). Minke whales were distributed in the Yellow Sea and coastal area of the East Sea from spring to fall. Pacific white-sided dolphin sightings were restricted to the middle and upper coastal areas of the East Sea in summer. Common dolphins were sighted from east of the southern coast to the eastern coast of the Korean Peninsula from spring to fall. Finless porpoise occurred in all Korean coastal areas, except the middle and upper eastern coast.

Maturity and Spawning of Lycodes tanakae in the Coastal Waters of the Middle East Sea (동해 중부연안 벌레문치(Lycodes tanakae)의 성숙과 산란)

  • Shon, Myong Ho;Yoon, Byoung Sun;Park, Jeong-Ho;Choi, Young Min;Lee, Jae Bong;Lee, Hae Won;Cha, Hyung Kee;Yang, Jae Hyeong
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.47 no.3
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    • pp.255-263
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    • 2014
  • We investigated the reproductive characteristics of Lycodes tanakae in the coastal waters of the middle East Sea to elucidate the species' population structure. We investigated Lycodes tanakae maturation and spawning based on samples collected by Danish seine and gill nets from January 2012 to December 2013. We analyzed monthly changes in maturity stage, gonadosomatic index (GSI), egg diameter, fecundity, and total length at 50% group maturity. The spawning period was December to February, while fecundity ranged from 1,677 eggs at 57.3 cm (total length;TL) to 6,445 eggs at 75.7 cm. The relationship between TL and fecundity (F) was $F_e=6E-05TL^{3.127}$ ($R^2$ = 0.516), and F increased with increasing TL. We estimated the TL at 50% group maturity as 60.4 cm for females and 59.8 cm for males. This study is the first report of Lycodes tanakae reproductive characteristics in the coastal waters of the middle East Sea.

CURRENT STATUS OF NUCLEAR FUSION ENERGY RESEARCH IN KOREA

  • Kwon, My-Eun;Bae, Young-Soon;Cho, Seung-Yon;Choe, Won-Ho;Hong, Bong-Geun;Hwang, Yong-Seok;Kim, Jin-Yong;Kim, Kee-Man;Kim, Yaung-Soo;Kwak, Jong-Gu;Lee, Hyeon-Gon;Lee, San-Gil;Na, Yong-Su;Oh, Byung-Hoon;Oh, Yeong-Kook;Park, Ji-Yeon;Yang, Hyung-Lyeol;Yu, In-Keun
    • Nuclear Engineering and Technology
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    • v.41 no.4
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    • pp.455-476
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    • 2009
  • The history of nuclear fusion research in Korea is rather short compared to that of advanced countries. However, since the mid-1990s, at which time the construction of KSTAR was about to commence, fusion research in Korea has been actively carried out in a wide range of areas, from basic plasma physics to fusion reactor design. The flourishing of fusion research partly owes to the fact that industrial technologies in Korea including those related to the nuclear field have been fully matured, with their quality being highly ranked in the world. Successive pivotal programs such as KSTAR and ITER have provided diverse opportunities to address new scientific and technological problems in fusion as well as to draw young researchers into related fields. The frame of the Korean nuclear fusion program is now changing from a small laboratory scale to a large national agenda. Coordinated strategies from different views and a holistic approach are necessary in order to achieve optimal efficiency and effectiveness. Upon this background, the present paper reflects upon the road taken to arrive at this point and looks ahead at the coming future in nuclear fusion research activities in Korea.

Congenital Bilateral Anophthalmia in a Holstein Calf

  • Hur, Tai-Young;Kang, Seog-Jin;Cho, Yong-Il;Jung, Young-Hun;Do, Yoon-Jung;Ryu, Il-Sun;Back, Kwang-Soo;Jeon, Byeong-Soon;Kim, Hyeon-Shup;Ahn, Byeong-Suk;Suh, Guk-Hyun
    • Proceedings of the Korean Society of Veterinary Clinics Conference
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    • 2007.05a
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    • pp.174-174
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    • 2007
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