• Journal of Microbiology
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• 제44권1호
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• pp.23-28
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• 2006

We investigated the effects of halogenated aromatic compounds (HACs) including naturally occurring ones (L-thyroxine, 3-chloro-L-tyrosine, 5-chloroindole, 2-chlorophenol, 4-chlorophenol and chlorobenzene) on polychlorinated biphenyl (PCB) dechlorination in sediment cultures. A PCB-dechlorinating enrichment culture of sediment microorganisms from the St. Lawrence River was used as an initial inoculum. When the culture was inoculated into Aroclor 1248 sediments amended with each of the six HACs, the extent of dechlorination was not enhanced by amendment with HACs. The dechlorination patterns in the HAC-amended sediments were nearly identical to that of the HAC-free sediments except the 3-chloro-L-tyrosine-amended ones where no dechlorination activity was observed. When these sediment cultures were transferred into fresh sediments with the same HACs, the dechlorination specificities remained the same as those of the initial inoculations. Thus, in the present study, the substrate range of the highly selected enrichment culture could not be broadened by the HACs. It appears that HACs affect PCB dechlorination mainly through population selection rather than enzyme induction of single population.

• International Journal of Computer Science & Network Security
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• 제21권12호
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• pp.189-192
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• 2021

The article theoretically substantiated, developed and practically implemented a structural and functional model of the formation of ICT competence, taking into account interdisciplinary integration, defines the pedagogical conditions that contribute to the formation of ICT competence: interdisciplinary integration as a basis for building an interdisciplinary course, the content of which is aimed at the formation of ICT competence; the use of IEE, including information, didactic, technological components as a basis for the formation of ICT competence; integration of formal, non-formal and informal education for the implementation the integrity of the acquired knowledge, skills, experience as the basis for the formation of the ICT competence of teachers; creation and use of a set of tasks (educational (UZ), educational and methodological (UMP), educational and professional (UPZ)) as special tools for the formation of ICT competence.

• 해양환경안전학회지
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• 제22권2호
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• pp.174-180
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• 2016

본 연구는 여수에서 출항하여 백도와 도서문화가 살아있는 거문도를 거쳐 제주 김녕항으로 이어지는 해양관광 크루즈 세일링 요트 항로를 제안하였다. 최근 해양레저 활성화에 비례하여 안전사고도 늘어나고 있으며, 세일링 요트의 특성을 고려한 안전항로 개척은 지역별, 해역별로 조사되어야 한다. 따라서 거문도의 사례를 통해 분석해 보면 해양문화의 소개, 국제요트대회유치, 다기능항으로 개발 등이 필요하고, 특히 해당 항로의 운항패턴과 밀집도 분석 등이 추가로 도출되어야 할 것이다. 이러한 정보는 세일링 요트의 운항 안전율을 높여 지역 관광산업에 도움이 될 것이다.

• KSBB Journal
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• 제20권5호
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• pp.371-375
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• 2005

암세포가 특정 항암제에 의해 내성을 획득하면 구조가 상이한 타 항암제에도 교차내성을 나타내는 이른바 암세포의 다약제내성(MDR)이 암 화학요법에 있어서 가장 심각한 문제가 되고 있다. 본 연구에서는 점액세균의 대사산물로부터 다약제내성 암세포에 대한 생장억제물질을 탐색하는 과정에서 cellulose 용해성 점액세균인 Sorangium cellulosum Jw1045의 대사산물에서 우수한 활성을 발견하고 그 활성본체로서 polyene-macrolide계 화합물인 chivosazole F를 분리하였다. Chivosazole F는 시험한 인체기원의 암세포에 대해 모두 강한 생장억제작용을 나타내었으며 $(IC_{50}=0.1\~10ng/ml)$, 다약제내성 암세포주인 CL02와 CP70에 대해서도 감수성세포주와 동일한 활성을 나타내었다. 이러한 사실은 chivosazole F가 암세포에 대해 다제내성을 유도하지 않는 우수한 활성물질임을 나타탬과 동시에 다제내성을 극복하는 신규 항암제 선도화합물로서의 유용성을 시사하는 것으로 그 의미가 크다.

• 해양환경안전학회지
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• 제19권5호
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• pp.503-510
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• 2013

본 연구에서는 우리나라 해기사들의 행동특성을 파악하고, 이를 통제하기 위한 방안을 제시함으로써 해양안전 문화설계를 용이하게 하고자 하였다. 한국선원 377명을 대상으로 실증분석 결과, 우리나라 선원은 일반적인 한국인의 성격특성 중 "정이 많다"는 것이 가장 뚜렷한 인식을 보였으며, 유교적 관습이 아직도 해상직업 종사자들에게도 영향을 많이 끼치는 것으로 나타났다. 그러나 직책별, 성별, 선종별 집단간에는 행동특성의 차이를 보이지 않았으나 학력별로는 차이가 있는 것으로 나타났다. 한편 한국선박의 안전운항을 위해 동원될 수 있는 수단은 한국선원의 집단 구성에 관계없이 부적 강화물을 제공하는 것보다는 정적 강화물을 제공하는 것이 도움이 될 것으로 판단된다. 선박의 안전관리 수단은 학력수준 외는 집단별 차이가 없는 것으로 나타나, 선원의 학력수준에 맞는 안전관리방안을 도입하는 것이 안전관리의 효율성을 높일 것으로 판단된다.

• 한국항해항만학회지
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• 제38권5호
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• pp.527-539
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• 2014

본 연구는 외국인 선원의 혼승형태와 혼승비율, 이문화 수용 및 적응에 따른 집단응집성, 조직몰입 및 직무만족의 인과관계를 규명하기 위한 연구모형과 가설을 설정하였다. 가설 검증을 위해 혼승선박을 대상으로 설문조사를 실시하고 변인들의 관계를 회귀분석을 통해 실증분석하였다. 분석결과, 한국인 선 기관장과 외국인 사관 혼승선박의 집단응집성과 조직몰입 및 직무만족이 한국인 선 기관장과 한국인 사관 승선선박 보다 더 높은 것으로 나타났다. 혼승비율에서는 외국인 선원의 비율이 31~50%일 경우의 집단응집성이 다른 혼승 비율에 비해 낮은 것으로 나타났다. 그러나 혼승형태 및 비율과 집단응집성에 대한 이문화 수용과 적응의 조절효과는 나타나지 않았다. 그리고 집단응집성이 높은 혼승선박에서는 조직몰입도와 직무만족도가 높아지는 것으로 나타났다. 본 연구의 결과는 해운선사 및 선박관리사에 선원들의 직급별 혼승형태와 외국인 혼승비율을 조절하여 혼승선박 내의 집단응집성과 직무만족도 및 조직몰입도를 높여줄 수 있다는 것을 제시하고 있다.

• Asian review of World Histories
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• 제4권1호
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• pp.35-81
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• 2016

The objective of this essay is to propose a cultural history of cosmography and cartography from the thirteenth to the sixteenth centuries. It focuses on some of the processes that characterized these fields of knowledge, using mainly western European sources. First, it elucidates the meaning that the term cosmography held during the period under consideration, and the scientific status that this composite field of knowledge enjoyed, pointing to the main processes that structured cosmography between the thirteenth century and the sixteenth century. I then move on to expound the circulation of cosmographic knowledge among Portugal, Venice and Lisbon in the fourteenth and fifteenth centuries. This analysis will show how cartography and cosmography were produced at the interface of articulated commercial, diplomatic and scholarly networks; finally, the last part of the essay focuses on the specific and quite distinctive use of cosmography in fifteenth-century European culture: the representation of "geo-political" projects on the world through the reformulation of the very concepts of sea and maritime networks. This last topic will be developed through the study of Fra Mauro's mid-fifteenth-century visionary project about changing the world connectivity through the linking of several maritime and fluvial networks in the Indian Ocean, Central Asia, and the Mediterranean Sea basin, involving the circumnavigation of Africa. This unprecedented project was based on a variety of sources accumulated in the Mediterranean Sea basin as well as in Asia and in the Indian Ocean over the course of several centuries.

• Fisheries and Aquatic Sciences
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• 제12권4호
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• pp.317-323
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• 2009

Waste products were biologically estimated from juvenile flounder (Paralichthys olivaceus) on three diet types-raw fish-based moist pellets, moist pellets, and extruded pellets. Total solid and soluble wastes were estimated by determining nutrient digestibility and accumulation in juvenile flounders through growth trials. Total solid wastes produced were 20%-23% of the organic matter supplied. Soluble excretions ranged from 45% to 49%. Soluble nitrogenous excretions ranged from 36.4% to 46.2%. These results indicate that about 30.2%-35.9% of supplied feed is retained in the fishes' bodies while the remainder of feed is excreted into culture systems or the surrounding environment.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2003년도 춘계공동학술대회논문집
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• pp.11-15
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• 2003

Ennin is a Japanese buddhist monk who traveled Tang from Jun. 13, 838 A D. to Dec. 14, 847 A D. in lunar's calender and wrote lengthy diary through the travel. This diary contained not only his wandering and triumphs but also politics, economy, social culture, religion, diplomatic policies, militaries, geography, transportations and administrations. Furthermore, the beginning of his diary dated Jun. 13, to July 3, 838 A. D. is recorded in the manner of ship's logbook entries. Many terms of navigation and naval architecture appears on it. It is very important to understand them for study ancient ship and its navigation skill. This Per aims to invest the meaning of “no-a” obviously refers to some part of hull of the ship upon first step to annotate the terms which are appeared in the diary.

• 수산해양교육연구
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• 제12권2호
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• pp.123-141
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• 2000

Facing to millenium, The new development of maritime and Fisheries education schemes will be cultivated in order to challenge global maritime nations as the new target of marine education which was established new index and problems of maritime education in place. First, The index of Marine and Fisheries education of 21st century was aimed at the spirits of expansion of territories of the era of ambassador of Jang Bo Go Sylla dynasty where marine trade had been prevailed between sylla and china leading to the spirits of marine pioneer in the northeastern Asian regions. and we must maintain the great desire and frontier spirities toward the marine industry also, adjust to the development and frontier spirits. Secondly, In order to cultivate the prominent man power for the marine industry, the government shall be specialized for the agency of marine education system, expand the educational installation, reforms the content of curriculum, to be adjust the global education system, also, enlarge the scholarship for the student, exemption tuition fees, installed the dormitory for the student, professors and teachers engaging in this parts have to lead the students with the pride and confidence and must provided the chance of job after he had completed for their on boarding life. Thirdly, for the secure responsible officer, the authorities has a schedules for enlarging the chance of studying and training also have to accumulate the practical experience and should enforce the retraining to the prof's and teachers also improve the leaders quality, on the other hand. The position of prof's and teachers will be elevated with the gaining of education philosophy and special treatment by the authorities. Fourth, to receive the positively marine industry educational system. First of all, have to provide the cooperation of industries and academy and they satisfy their job and change the their way of thinking and should notify the importance of government strategical industry by the mass-media system. Against the new marine era, we must participate the marine industry positively, have to elevate the culture of mankind and also, have provide the basement of prominent man-power for the marine industry in future.