• Title/Summary/Keyword: Korean Sea

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On the Japanese Investigations for the Korean Sea during Meiji Period (명치시대(明治時代) 일본의 조선(朝鮮) 바다 조사)

  • Rhee, Kun-Woo
    • The Journal of Fisheries Business Administration
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    • v.43 no.3
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    • pp.1-22
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    • 2012
  • This study is to survey the Japanese investigations for Korean sea during Meiji period. Meiji government was eager to develop new fishing ground to provide the marine products to their people, to offer the job for their people and to accumulate the starting capital. They found that the Korean sea was abundant in shark, sea cucumber and ear shell. These products were valuable for Chinese foods. From 1870's, Japan Navy investigated Korean sea for military purpose and subsequently for fishery. The first investigation for Korean maritime products was The Circumstances for Catching Fish in Korean Sea by Sekizawa Akikiyo in 1893. He was the most famous specialist in fishery and insisted that Japanese fishermen must go to Korean sea and catch fishes. Meiji government accepted his opinion and pushed the policy sending fishermen to Korean sea. Meiji government enlarged the investigations and backed up the activities of fisherman and the organization for fishery in Korean sea. Especially, the investigations by The Association for Korean Sea Fishery were repeated and detailed(1897~1900). The Association intervened the conflicts between Korean and Japanese fishermen. At the same time, The Association investigated the attitudes of Korean people to Japanese. The Guidelines for Fishery in Korean Sea by Kuzuu Syuzo was also very detail, especially in the kinds of fishes in Korean sea. These investigations were supported by Meiji government or organizations helped by government.

Effects of Different Kinds of Salt in the Comutagenicity and Growth of Cancer Cells (소금의 보돌연변이 및 암세포성장억제 효과)

  • Zhao, Xin;Kim, So-Hee;Qi, Yongcai;Kim, So-Young;Park, Kun-Young
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.1
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    • pp.26-32
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    • 2012
  • Purified salt and several different types of sea salts showed comutagenicity in the presence of MNNG (N-methyl-N'-nitro-N-nitrosoguanidine). However, the salts exhibited anti-cancer effects in HCT-116 human colon carcinoma cells and AGS human gastric adenocarcinoma cells. Sea salt showed less comutagenicity effects than purified salt. French sea salt (Salines de Guerande) and Korean sea salt I, which contained higher levels of minerals, showed less comutagenicity. In MTT assay, when HCT-116 and AGS cancer cells were treated with the salts, French sea salt (36% and 34%) and Korean sea salt I (35% and 33%) showed higher anticancer activities than Spanish sea salt (33% and 31%), Italian sea salt (29% and 27%), Korean sea salt II (22% and 22%), or purified salt (18% and 15%) at a salt concentration of 1%. French sea salt and Korean sea salt I also showed better anticancer activities than the other salt samples at a low concentration of 0.5% (p<0.05). Apoptosis related genes of Bax and Bcl-2 were regulated by the treatment of the salt in the colon cancer cells. French sea salt and Korean sea salt I especially increased Bax mRNA expression, but decreased Bcl-2 expression, indicating that they can induce apoptosis of the cancer cells. From the experimental results, sea salt showed better health functional effects than the purified salt, and French sea salt and Korean sea salt I which contained high levels of Ca, K, and Mg showed better effects.

Sequence Analysis of the 18S rDNA from Scallops Collected around Korean Sea (한국 주변해역 가리비로부터 분리한 18S rDNA의 염기서열 분석)

  • KIM Mi-Jung;JM Long-Guo;JIN Hyung-Joo;CHO Ji-Young;PARK Jung-Youn;CHANG Young Jin;HONG Yong-Ki
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.34 no.2
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    • pp.137-144
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    • 2001
  • Sequences of partial 18S rDNA have been analyzed to elucidate genetic diversity of scallops collected around Korean sea, The scallops used in genetic comparison are Argopecten irradians concentricus, Amusium japonicum japonicum, Chlamys farreri farreri, Chlamys (Swiftopecten) swifti and Patinopecten yessoensis. The 18S rDNA sequences were aligned by Clustalx program. Phylogenetic tree was drawn by Treecon program, The scallops were divided into two groups-the Family Pectinidae containing A. japonicum japonicum and the Family Propeamussiidae containing Argopecten, Chlamys and Patinopecten genera. The Family Propeamussiidae was also divided into the Supergenera Aequipecten containing A. irradians concentricus and Supergenera Chlamys containing C. farreri farreri, C. swifti and P. yessoensis. The species of C. swifti was closer to the P. yessoensis rather than C. farreri farreri in respect to nuclear 18S rDNA sequence.

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Radio-Carbon Age Determination by Tandem Accelerator Mass Spectrometry Technique and Its Application To The Korean Sea (탄뎀가속기에 의한 방사성탄소 년대측정과 한국해에의 적용)

  • Suk, Bong-Chool;Toshio Nakamura;Nobuyuki Nakai;Asahiko Taira
    • The Korean Journal of Quaternary Research
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    • v.4 no.1
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    • pp.27-40
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    • 1990
  • $^{14}C$ age dating by AMS (accelerator mass spectrometry) technique was performed on twenty five small sized fossil shells and one peat taken from the sixteen piston cores in the southern and southeastern Korean Sea. AMS technique is available to date only a few milligram of amorphous carbons compare than conventional dating technique. It is described in detail of sample pre-treatment and experimental, and applied to the reconstruction of the sea level changes since the late Pleistocene in the Korean Sea. Dated age ranges from 520$\pm$100 to older than 33,500 years. Sedimentary facies in the study area represents a different environmental set which is affected by sea level fluctuation since the late Pleistocene.

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Study on the Operational Concept of Underwater Acoustic Measurement System in Korean Sea (한국 환경에 적합한 기동형 수중음향측정체계 운용 개념 연구)

  • Dho, Kyeong-Cheol;Son, Kweon;Choi, Jae-Yong
    • Journal of the Korea Institute of Military Science and Technology
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    • v.6 no.2
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    • pp.45-54
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    • 2003
  • The radiated-noise of combat ship is very important in the point of detection and vulnerability assessment. Therefore several kind of underwater acoustic measurement method has been developed. This paper reviews the various measurement concepts and proposes a procedure to select the better one under consideration of measurement conditions. And this paper recommends the portable drift type, which has vertical line array, as the most efficient measurement method in Korean sea.

Bibliographic Research on the Modern Japan's Investigation on Korean Sea (근대 일본의 조선 바다 조사에 대한 서지학)

  • RHEE, KUNWOO
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.24 no.3
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    • pp.448-456
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    • 2019
  • From the 1890s to the 1900s, Modern Japan investigated the sea of Korea (Joseon Dynasty) several times. The records of investigation result were "Fishery Circumstances of Korean Sea"(1893), "Official Trip Report on Wonsan Area of Korea"(1895), "Nautical Publication of Korea"(1894), "Patrol Reports of Korea Fishery Association"(1898~1900), "Fishery Guide for Korean Sea"(1903) and "Chronicles of Korea Fisheries"(1908~1911). Although these surveys were conducted more than 100 years ago, they provide a glimpse into the fishing situation of Korea as well as the lives of residents in the coastal areas. In particular, Chronicles of Korean Fisheries is a vast collection of four volumes, and it has much to do with the history and culture of Korea, including marine products from the coastal waters, the population of coastal villages, the number of people engaged in fishing, and the number of fishing boats and nets. From the perspective of the development of fisheries studies, the modern classification of marine products after Linne has already been applied, and the classification of those days is quite different from that of the present classification, so it can be said to be an interesting data from the viewpoint of animal and plant taxonomy.

First detailed morphological description of the loggerhead sea turtle (Caretta caretta) caught from the Yellow Sea of Korea

  • Lee, Heon-Joo;Kim, Il-Hun;Kim, Ja-Kyeong;Jeong, Sumin;Park, Daesik
    • Journal of Ecology and Environment
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    • v.37 no.4
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    • pp.201-208
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    • 2014
  • To date, no study has reported detailed morphological characteristics of Korean sea turtles. Due to the lack of such basic information on Korean sea turtles, further related studies have been difficult in South Korea. In this report, we determined the species and the sex of the one sea turtle caught from the Yellow Sea of Korea (Taean-gun, Chungcheongnamdo) on July 17, 2013, and described its detailed morphological characteristics. The sea turtle was identified as a loggerhead sea turtle (Caretta caretta) by the presence of an interprefrontal scale on the head. The turtle had three times longer length between the edge of anal scute to the anus than that between the anus to tip of the tail, and the size of a pair of claws on the flippers were distinctively different, suggesting that the turtle was a male. Finally, the assumption that the sea turtle might be sexually mature is based on its body weight (59.95 kg), the maximum straight length of the carapace (72.5 cm), and the worn serrated parts at the edge of supracaudal scutes. The loggerhead sea turtle described in this study is the first record from the Yellow Sea of Korea.

The Study of the Deaths occurred at Korean sea (우리나라 해상에서 발생한 사망사고 유형에 관한 연구)

  • Kim, Il-Pyeong;Park, Hee-Kyung;Chae, Jong-Min
    • Journal of forensic and investigative science
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    • v.2 no.2
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    • pp.67-91
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    • 2007
  • The nature of deaths occurred at sea may be revealed the differences from that in the land, but there is no comprehensive statistical analysis of deaths occurred at Korean Sea so far. Therefore, the cases of deaths or missing in the period 1993 - 2006 were analyzed by the cause, place of death, and results of preliminary investigation. In the period from 1993 to 2006, over 1000 peoples were died or missing every year. The cases of marine safety accidents including self-carelessness and mishap were approached over 60% and cases of homicide were less than 1%. The closure cases of preliminary investigation were reached over 70% and the most of deaths occurred in fishing vessels (the range of 20 ~ 99 tonnage). The suspension cases of preliminary investigation were reached to 70% of all missing and drowning cases. The results showed that the most of deaths occurred at sea could be prevented by the safety regulations including mandatory report of accidents, marine safety education and training, punishment the people responsible for the accidents. For the unidentified bodies, data should be collected and recorded for the future identification. The crime scene investigators should be trained to ensure the quality of their professional skills regularly.

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