• Title/Summary/Keyword: Human vessels

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The Primary Factors of Marine Casualties and the Counterplan for Promotion of Marine Safety (해난(海難)의 요인(要因)과 해상안전대책(海上安全對策))

  • Park, Byeong-Soo;Kang, Il-Kweon
    • Journal of Fisheries and Marine Sciences Education
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    • v.7 no.2
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    • pp.173-181
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    • 1995
  • In this paper, marine casualties occurred in Korean coastal and near-coastal seas, from 1989 to 1993, were analysed. The main results obtained were as follows : 1. According to the numerical component ratio of marine casualties, fishing vessels account for higher portion than other vessels and passenger vessels lower portion. On the other hand, in view of the occurring ratio of that, fishing vessels account for very low rate of accidents and passenger vessels very high rate. 2. Most of marine casualties resulted from the human factors such as careless operation and insufficient engine maintenance, etc. Collision accidents took a majority of all marine accidents in all of vessels, but engine trouble accounted for main cause of accidents in fishing vessels. 3. In view of the results on classifying marine casualties into time zone, great number of accidents took place in dawn, but that of fishing vessels in forenoon. 4. According to the view of the occurring ratio of the injury, the rate was 0.33% in total vessels and 0.18% in fishing vessels. 5. In view of the marine casualties by age and shipboard career, crews with 10~20 years shipboard career raised more marine accidents than others.

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Understanding Ancient Human Subsistence through the Application of Organic Residue Analysis on Prehistoric Pottery Vessels from the Korean Peninsula

  • Kwak, Seungki;Kim, Gyeongtaek
    • Journal of Conservation Science
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    • v.36 no.4
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    • pp.244-254
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    • 2020
  • This study investigates prehistoric human subsistence and pottery use on the Korean peninsula through the organic residue analysis of archaeological potsherds. Ancient human subsistence is one of the core topics in Korean archaeology. However, due to the high acidity of sediments, which prevents the long-term preservation of organic remains, archaeologists have been short of critical information on how these early prehistoric dwellers lived. Ceramic vessels can contain well-preserved lipids originating from past culinary practices. For a better understanding of human subsistence on the prehistoric Korean peninsula, food-processing behaviors were reconstructed by analyzing ancient lipids extracted from a pottery matrix. The potsherd samples used in the analysis in this paper were collected from major prehistoric habitation sites. The results show that subsistence strategies differed according to both location and time period and reveal how organic residue analysis can contribute to a better understanding of prehistoric human subsistence strategies.

퍼지 클러스터링 방법을 이용한 흉부 혈관의 검출에 관한 연구

  • 황준현;박광석;민병구
    • Journal of the Korean Institute of Intelligent Systems
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    • v.1 no.2
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    • pp.65-71
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    • 1991
  • A new algorithm is proposed for the automatic detection of pulmonary blood vessels by simulating the human recognition process by the pyramid images. Large and wide vessels are detected from the most compressed level, followed by the detection of small and narrow ones from the less compressed images with FCM(fuzzy c means). As the proposed algorithm detects blood vessels orderly according to their size, there is no need to consdier the variation of parameters and the brance points which should be considered in other detection algorithms.

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Anatomic Study of the Vessels of the Digital Nerves in the Fingers (손가락 신경의 혈관 구조에 대한 해부학적 연구)

  • Lee, Joo Chul;Choi, Hwan Jun;Kim, Jun Hyuk;Lee, Young Man;Nam, Doo Hyun
    • Archives of Reconstructive Microsurgery
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    • v.21 no.2
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    • pp.149-152
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    • 2012
  • Purpose: The vessels of peripheral nerves have been extensively studied since Breidenbach used vascularizd nerve grafts. Tayor and Pinel studied the course and distribution of the vessels of peripheral nerves. However, the vessels of digital nerves are still not well known. The objective of this study was to prove vessels of digital nerves and to investigate the pathway of that. Materials and Methods: 36 patients and 2 fresh human cadavers were studied under the microscope and histologic sections under the light microscope.. Results: We found that digital nerves had own arterioles and venules as well as peripheral nerves. This small vessels of digital nerves paralleled the digital nerves or run in a spiral. Digital nerves were abundantly vascularized throught their length by a succession of vessels and by their repeated divisions and anastomoses. Conclusion: The clinical implications of this results can be discussed in relation to the dissection of nerves, the possibility of vasculized nerve grafts.

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Potential Mechanisms of Benzyl Isothiocyanate Suppression of Invasion and Angiogenesis by the U87MG Human Glioma Cell Line

  • Zhu, Yu;Zhang, Ling;Zhang, Guo-Dong;Wang, Hong-Ou;Liu, Ming-Yan;Jiang, Yuan;Qi, Li-Sha;Li, Qi;Yang, Ping
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.19
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    • pp.8225-8228
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    • 2014
  • Glioma is one of the most common tumors in China and chemotherapy is critical for its treatment. Recent studies showed that benzyl isothiocyanate (BITC) could inhibit the growth of glioma cells, but the mechanisms are not fully understood. This study explored the inhibitory effect of BITC on invasion and angiogenesis of U87MG human glioma cells in vitro and in vivo, as well as potential mechanisms. It was found that BITC could inhibit invasion and angiogenesis of human glioma U87MG cells by inducing cell cycle arrest at phase G2/M. It also was demonstrated that BITC decreased expression of cyclin B1, p21, MMP-2/9, VE-cadherin, CD44, CXCR4 and MTH1, the activity of the telomerase and $PKC{\zeta}$ pathway. Microarray analysis was thus useful to explore the potential target genes related to tumorigenic processes. BITC may play important roles in the inhibition of invasion and angiogenesis of human glioma cells.

Research on The Theory of Blood Vessels in "Hwangjenaegyeong(黃帝內經)" ($\ll$황제내경(黄帝内经)$\gg$ 혈맥이론탐토(血脉论探讨))

  • Ju, Bao-Zhao;Kim, Hyo-Chul
    • Journal of Korean Medical classics
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    • v.22 no.4
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    • pp.217-220
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    • 2009
  • In "Hwangjenaegyeong(黃帝內經)", the name of blood vessels is closely related to images of the river, and the word for blood vessel contains the following meaning, such as blood vessel, blood wind as well as blood stasis and so on. In a physiological perspective, the unobstructed blood vessel and normal operation blood are important symbols of health, for blood is the basis for human survival, physical activity and mental activity. In pathology, the external cold, excessive seven emotions and a biased diet can cause many kinds of abnormalities of the blood vessels, which can in turn become causes for a variety of diseases. The theory of blood vessels in "Hwangjenaegyeong" can provide guidance for diagnosis and treatment of cardiovascular diseases in practice.

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Alcohol Beverage Utensils Represented on the Tomb Mural Paintings of Foreign Exchange Countries with Koryo Dynasty (고려 대외교류국의 고분벽화에 나타난 주구(酒具))

  • Koh, Kyung-Hee
    • Journal of the Korean Society of Food Culture
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    • v.30 no.5
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    • pp.596-610
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    • 2015
  • This study is on the alcohol beverage utensils represented on the Chinese tomb mural paintings of Song, Liao, Jin, and Yuan those countries had foreign exchange with Koryo Dynasty. These mural paintings are distributed in the areas such as Hebei, Henan, Inner mongolia, Shanxi, Shaanxi, Peijing. etc. The Alcohol beverage vessels were classified mainly into storage vessel, pouring vessel, drinking vessel and ladles according to the purpose. The storage vessels of Song, Liao and Jin were called Jiuping, Jingping, Jiuzun as well as Meiping. Pouring vessels are basically one set of Zhuzi, Wenwan and Jiuzhu, or Zhuhu and Zhuwan. On the mural paintings of Yuan Dynasty, Meiping as storage vessels disappear, and a variety of shapes of pouring vessels such as Mayu and Yuhuchunping appear. This trend indirectly indicates the new arrival of distilled liquor, which seems to have affected transition of the alcohol beverage utensils.

A Study on the Detection of Pulmonary Blood Vessel Using Pyramid Images and Fuzzy Theory (피라미드 영상과 퍼지이론을 이용한 폐부 혈관의 검출에 관한 연구)

  • Hwang, Jun-Hyun;Park, Kwang-Suk;Min, Byoung-Gu
    • Journal of Biomedical Engineering Research
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    • v.12 no.2
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    • pp.99-106
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    • 1991
  • For the automatic detection of pulmonary blood vessels, a new algorithm is proposed using the fact that human recognizes a pattern orderly according to their size. This method simulates the human recognition process by the pyramid images. For the detection of vessels using multilevel image, large and wtde ones are detected from the most compressed level, followed by the detection of small and narrow ones from the less compressed images with FCM(fuzzy c means) clustering algorithm which classifies similar data into a group. As the proposed algorithm detects blood vessels orderly according to their size, there is no need to consider the variation of parameters and the branch points which should be considered in other detection algirithms. In the detection of patterns whose size changes successively like pulmonary blood vessels, this proposed algorithm can be properly applied

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A Tale of Two Models: Mouse and Zebrafish as Complementary Models for Lymphatic Studies

  • Kim, Jun-Dae;Jin, Suk-Won
    • Molecules and Cells
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    • v.37 no.7
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    • pp.503-510
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    • 2014
  • Lymphatic vessels provide essential roles in maintaining fluid homeostasis and lipid absorption. Dysfunctions of the lymphatic vessels lead to debilitating pathological conditions, collectively known as lymphedema. In addition, lymphatic vessels are a critical moderator for the onset and progression of diverse human diseases including metastatic cancer and obesity. Despite their clinical importance, there is no currently effective pharmacological therapy to regulate functions of lymphatic vessels. Recent efforts to manipulate the Vascular Endothelial Growth Factor-C (VEGFC) pathway, which is arguably the most important signaling pathway regulating lymphatic endothelial cells, to alleviate lymphedema yielded largely mixed results, necessitating identification of new targetable signaling pathways for therapeutic intervention for lymphedema. Zebrafish, a relatively new model system to investigate lymphatic biology, appears to be an ideal model to identify novel therapeutic targets for lymphatic biology. In this review, we will provide an overview of our current understanding of the lymphatic vessels in vertebrates, and discuss zebrafish as a promising in vivo model to study lymphatic vessels.

Problems and Ways of Improving on Personal Organization of Maritime Safety Tribunal (해양안전심판원의 인적구성의 문제점 및 개선방안)

  • Lee, Jong-Gun
    • Journal of Fisheries and Marine Sciences Education
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    • v.25 no.3
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    • pp.564-579
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    • 2013
  • The purpose of Maritime Safety Tribunal is that experts about ship operation investigate and reveal causes of marine disasters and suggest plans to prevent recurrence in Korean Maritime Safety Tribunal which is a kind of administrative court. Despite the fact that 72% of marine disasters is fishing vessel accidents and 75% of collision accidents between vessels which most occur is related to fishing boats, it is the very serious problem that there is no any person with licenses of marine technicians for fishing vessels in judges and investigators of Korean Maritime Safety Tribunal. The operational characteristics of fishing vessels, their sizes, and shift patterns of duties in wheelhouses are completely and incommensurably different from those of merchant vessels. By the way, if the investigators and judges who just consist of merchant vessel experts investigate and judge marine accidents about fishing vessels, there could be errors in establishment of policies to investigate and reveal their causes and prevent recurrence of accidents. Especially, in case of collision accidents between fishing vessels and merchant vessels, it is thought that the marine accident interested provides causes which can be doubtful about fairness of judges. Therefore, it is thought that the ratio of judges and investigators is most desirable to compose it to be similar to the occurrence frequency of marine accidents. For this, the following solution plans are suggested. First, qualification for appointment requires first class marine technicians. But there is the only one vessel which needs the first class in fishing vessels. Therefore, it is thought that the provisory clause should be added so that the second class marine technicians can be used instead of the first class ones. Second, the marine accidents of fishing vessels reach 72% but the fact that there is no any judge and investigator with licenses of marine technicians for fishing vessels is thought to go against the purpose of establishment of Korean Maritime Safety Tribunal. Therefore, it is thought that there is, at least, one more judges and investigators in the central and local Korean Maritime Safety Tribunals. The same method should be applied to judge assistants and investigation assistants.