• Title/Summary/Keyword: marine use

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Fluorescent and Luminescent Proteins Derived from Marine Organisms: Functions and Applications

  • Sehyeok, Im;Jisub, Hwang;Hackwon, Do;Bo-Mi, Kim;Sung Gu, Lee;Jun Hyuck, Lee
    • Journal of Marine Life Science
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    • v.7 no.2
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    • pp.74-85
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    • 2022
  • Organisms constituting a large proportion of marine ecosystems, ranging from bacteria to fish, exhibit fluorescence and bioluminescence. A variety of marine organisms utilize these biochemically generated light sources for feeding, reproduction, communication, and defense. Since the discovery of green fluorescent protein and the luciferin-luciferase system more than a century ago, numerous studies have been conducted to characterize their function and regulatory mechanism. The unique properties of fluorescent and bioluminescent proteins offer great potential for their use in a broad range of applications. This short review briefly describes the functions and characteristics of fluorescent and bioluminescent proteins, in addition to summarizing the recent status of their applications.

A Random Forest Algorithm-based Accident Prediction to Prevent Marine Pilot Occupational Accidents

  • Gokhan Camliyurt;Won Sik Kang;Daewon Kim;Sangwon Park;Youngsoo Park
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2022.06a
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    • pp.415-416
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    • 2022
  • Marine pilot occupational accidents during transfer to/from the ship are at the top of the agenda after several safety campaigns by IMPA and individual attemptsThere is multiple transfer method for the marine pilot, but a most common way is to use the pilot cutter. This paper aims to predict marine pilot occupational accidents before it occurs by using historical data. Since the problem depends on several variables, this paper develops a model by using the random forest method to predict marine pilot accidents before happening with the random forest method by using RStudio software

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Interactions Between Leafminer Damage and Leaf Necrosis Caused by Alternaria alternata on Potato in the Sultanate of Oman

  • Deadman, M.L.;Khan, I.A.;Thacker, J.R.M.;Al-Habsi, K.
    • The Plant Pathology Journal
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    • v.18 no.4
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    • pp.210-215
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    • 2002
  • Four field experiments were carried out from 1998 to 1999 and from 1999 to 2000 growing seasons of potato to investigate the relationship between leafminers and Alternaria alternata. The experiments established differential susceptibility among potato varieties to alternaria leaf necrosis, relationship between leafminer infestation and the level of necrosis, use of insecticides to reduce leafminer and leaf necrosis damages, and use of polyester fleece to eliminate leafminer and eventually reduce leaf necrosis. Results of the study indicate that control of leafminer is of primary importance because this will automatically lead to control of the damage caused by A. alternata.

An Effective Environmental Assessment for the Simple Statement of the Sea Area Utilization Consultation System (간이해역이용협의 유형분석 및 효율적 환경평가방안)

  • Lee, Dae-In;Eom, Ki-Hyuk;Kim, Gui-Young
    • Journal of Environmental Impact Assessment
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    • v.22 no.3
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    • pp.255-264
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    • 2013
  • This paper diagnosed the assessment problems and development types of the simple statement of the Sea Area Utilization Consultation System. and suggested the key assessment items for system improvement. The major types of Public Water occupation and use, and distribution characteristic of regional and coastal were analyzed by evaluate 529 review items during 2010-2012. The artificial structure installation including harbor and fishing port facilities in the South and West coast, and seawater supply and drainage for land-based aquaculture and power plant were dominated. The checklists considering each types of occupation and use in Public Water were suggested. In addition, policy proposals for system improvement were suggested.

Teaching Marine VHF Radio

  • Smith, Mattew
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2015.10a
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    • pp.227-229
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    • 2015
  • Training students to use a Marine VHF presents challenges because materials are either out of date or cost prohibitive. It is also difficult to teach in a "real world" setting. This presentation gives a few ideas of how to give practical training and a fair testing method.

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Biopesticides from Indigenous Marine-Derived Actinomycetes

  • Krishnasamy, Getha
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 1998.11a
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    • pp.163-165
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    • 1998
  • The use of synthetic pesticides in crop production, brings the possibility of a nonselective toxicity and accumulation of toxic compounds in the environment. As an alternative, bioactive compounds from actinomycetes can provide a rich source for biodegradable pesticides. A variety of biological activities such as antibacterial, antifungal, herbicidal, insecticidal and anticoccidial are associated with these microbial metabolites. Studies on the production of bioactive compounds from marine-derived actinomycetes have been very few, compared to the terrestrial actinomycetes. With their unique metabolic and physiological capabilities, the marine actinomycetes can be useful producers of novel metabolites.

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Comparative Analysis of Marine Accidents in Fishing Activity Protection Zones and Port and Navigation Zones to Improve Fishing Vessel Security (어선 통항 안전 확보를 위한 어업활동보호구역과 항만·항행구역의 해양사고 비교분석)

  • Hyundong Kim;Sangwon Park;Young-soo Park;Dae-won Kim;Gokhan Camliyurt
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.29 no.2
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    • pp.118-126
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    • 2023
  • In accordance with the increased demand for ocean use, the Marine Spatial Planning system was introduced to rationally allocate ocean space, under which fishing activity protection zones have been designated to protect fishery activities and promote fishery resource protection. However, fishing vessels that mainly sail in fishing activity protection zones are exposed to risk, such that they account for about 70% of marine accidents that occur in Korea, Proper risk management is thus required. This study aims to analyze marine accidents in fishing activities protection zones and port and navigation zones to secure the safety of fishing vessels passing within fishing activity protection zones. To this end, the traffic volume in marine use zones was investigated, and marine accidents were investigated by ship type, accident type, tonnage, accident cause, and loss of life. Analysis determined that most of the marine accidents per unit area of each type occurred in port and navigation zones, but overall most marine accidents occurred in fishing activity protection zones. In particular, it was found that traffic safety management was necessary because many human accidents occurred.

A Political-Economic Study on Fisheries Resource Rent and Rent-Seeking Behaviors (어업자원 지대 및 지대추구행위에 관한 정치경제학적 연구)

  • Park, Seong-Kwae
    • Journal of Fisheries and Marine Sciences Education
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    • v.17 no.3
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    • pp.340-360
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    • 2005
  • Fishery resource rents(i.e. windfall gains or excess profit), which tend to lead a variety of important economic, social, political problems, have been a fundamental cause of unbalance between fishery resource use and management. Thus, there may exist several sorts of optimal level of resource utilization such as economic maximum sustainable yield, biological maximum sustainable yield, social optimum production, socio-political optimum yield, etc. The fishery resource use level seems to a large extent to be determined by the characteristics of fishermen's rent seeking structure. As well known, fishery resources as common properties have a characteristic of being difficult to establish private property rights. Therefore, their use rights are controlled by the permit and/or the license system. As a result, absolute or differential rents are formed by the changes in institutional arrangements. Rent problems are often transformed into serious socio-political issues when the rent in a given industry is much higher to a socially unacceptable extent than the average of other industries. However, individual fishermen or fishermen's groups tend to behave aggressively to change the existing fishery institutions towards maximizing fishery rents. These rent-seeking behaviors often tend to nullify fishery management schemes. The larger is the relative rent difference between fisheries and other industries, the more aggressive tend to be the rent-seeking behaviors in fisheries.