• Ocean and Polar Research
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• 제30권1호
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• pp.59-77
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• 2008

The purpose of this study is to carry out a comparative analysis of Korean and US Sea Grant College Program (SGCP). The important lesson learned from the US SGCP is that ocean policy requires active interaction among public and oceans since oceans are far from constituents, law makers and government officials. Also, Sea Grant Program (SGP) should be based on universities so as to facilitate the use of equipment and expertise, there is a need for a well-organized control system, legislative mandates and strong government financial support, and sea grant activities must be well combined with regional/local outreach, education and research at the appropriate level.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2005년도 후기학술대회논문집
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• pp.250-251
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• 2005

The ESS(Energy Saving System) is composed of economic control algorithm for main sea water cooling pump with inverter. The control system of ESS is designed with the Field-Point and LabVIEW. This paper presents the control process and results of control and monitor for ESS.

• 유공압시스템학회:학술대회논문집
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• 유공압시스템학회 2010년도 춘계학술대회
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• pp.75-80
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• 2010

The paper is that study method to reduce bad influence that act to the floating fish cage by effect of environment in sea. Fish cage is controlled buoyancy using air control. According to marine environment, it is descend automatically to set-up depth and rise on the surface of the sea. The paper is the preceding research for a practical application. The fish cage simplified with the spherical float body. Then a control algorithm and a program developed by the experiment. And we did modelling by bond graph technique, and controlled by the practical reference model for PID control.

• 대기
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• 제32권4호
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• pp.395-409
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• 2022

A new soil moisture initialization scheme is applied to the Korea Meteorological Administration (KMA) Global Seasonal forecasting system version 6 (GloSea6). It is designed to ingest the microwave soil moisture retrievals from Soil Moisture Active Passive (SMAP) radiometer using the Local Ensemble Transform Kalman Filter (LETKF). In this technical note, we describe the procedure of the newly-adopted initialization scheme, the change of soil moisture states by assimilation, and the forecast skill differences for the surface temperature and precipitation by GloSea6 simulation from two preliminary experiments. Based on a 4-year analysis experiment, the soil moisture from the land-surface model of current operational GloSea6 is found to be drier generally comparing to SMAP observation. LETKF data assimilation shows a tendency toward being wet globally, especially in arid area such as deserts and Tibetan Plateau. Also, it increases soil moisture analysis increments in most soil levels of wetness in land than current operation. The other experiment of GloSea6 forecast with application of the new initialization system for the heat wave case in 2020 summer shows that the memory of soil moisture anomalies obtained by the new initialization system is persistent throughout the entire forecast period of three months. However, averaged forecast improvements are not substantial and mixed over Eurasia during the period of forecast: forecast skill for the precipitation improved slightly but for the surface air temperature rather degraded. Our preliminary results suggest that additional elaborate developments in the soil moisture initialization are still required to improve overall forecast skills.

• 한국항행학회논문지
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• 제25권3호
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• pp.236-241
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• 2021

본 논문에서는 해상에 설치되는 풍력발전기에 의한 해상 관제 레이더의 간섭 여부를 분석하는 방법론을 제시하고, 군산항 인근 해역에 설치되는 소수의 풍력발전기에 의한 해상 관제 레이더의 간섭 여부를 분석하였다. 레이더 간섭 분석은 ray 기반의 전자기 해석 프로그램을 이용하였으며, 고도 정보를 포함하는 수치지형도, 풍력발전기 도면 및 파도를 포함하는 해수면을 전자기 해석 프로그램에 맞게 변환하여 주변 지형과 풍력발전기에 의한 영향을 반영하였다. 분석 결과 대규모 풍력발전단지가 아닌 소수의 풍력발전기의 설치는 해상 관제 레이더의 운용에 심각한 영향이 없는 것으로 분석된다.

• 수산경영론집
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• 제32권2호
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• pp.73-89
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• 2001

The market conditions of sea mustard is changing by overproduction, decreasing price, Import of blanched and salted sea mustard from China into Korea domestic market and increasing market share of sea mustard of China in Japan. In addition, the price support program in sea mustard aquaculture must be modified due to the restriction of domestic support by international organization such as WTO. There are two ways to solve those problems. First is that finding a way to solve the overproduction of sea mustard. One of possible ways is the production adjustment by Marketing Order. Second is that finding an alternative way to replace price support program. The possible way is Direct Payment instead of purchase stockpile system. To introduce marketing Order, outlook center, organization of self-management, production adjustment through output control measure, improvement of market structure, and education/publicity arc necessary. Also, to implement marketing order, setting a model business by government is required. There are two steps for implementation of marketing order. First step is to construct Order Committee including organization of producer, people related marketing. However, this committee must run by government for certain short-term. Second step is to improve quality of product and acceleration of demand. At visual point that enforcement of the first step is completed, government has process that government transfers Order Committees self-correcting. It is desirable that government only conduct the support acts such as quality improvement and acceleration of demand. Also, at early stage it is necessary to have aid system for marketing order For example, we can expect that income increase by production adjustment in long run. However, in short run the income of producer may decrease so, it is required to compensate his economic lose. For compensation, The useful means that can be utilized is direct payment. Direct payment is not continued policy. Also, when production adjustment policy such as Marketing Order has effective results, Direct Payment as an assistant measure must be reduced or abolished. Therefore, when production adjustment acts as an effective tool to control overproduction, Direct Payment system.

• 한국응용과학기술학회지
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• 제36권1호
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• pp.113-124
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• 2019

The purpose of the study was to investigate the effects of sea cucumber extract on skin as a natural cosmetics functional material. Subjective evaluation of cosmetics before and after were conducted with questionnaires regarding moisture content, sebum content, melanin index, and erythema index. Experiments were conducted on improvement efficacy using skin clinical trials and questionnaires to evaluate changes in perception of skin condition and efficiency of products. With the aim of minimizing skin irritation, the efficiency of the solvent used for extraction was an important factor, and the sea cucumber extract was harvested with efficient extraction conditions at a ratio of 1:10 of 50% ethanol. The study aimed to identify the suitability of sea cucumber extract as a functional cosmetics material to improve the moisturizing ability of skin and its effect on the skin by adding marine natural animal sea cucumber extract. Clinical studies on cosmetics skin containing sea cucumber extract, excellent skin improvement effect from all items of clinical experiment in experimental and control groups. Sea cucumber extract was proved to be a stable, non-adverse physiologically active substance against abnormal symptoms or side effects of skin reactions and skin problems. In addition, the study found excellent results that can lead to its use as a cosmetics material. This is expected to contribute to the development of various cosmetics industries.

• 환경생물
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• 제26권2호
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• pp.109-114
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• 2008

방오도료로 많이 쓰이던 유기주석화합물은 일반생물에게 미치는 독성이 매우 강하고 또한 내분비계 장애물질임이 밝혀지면서 이를 대체할 화합물들이 개발되고 있다. 그 가운데 본 연구에서는 Sea-Nine 211(4,5-dichlore-2-n-octyl-3(2H) isothiazolone)을 사용하여 이 화합물이 해양생물 특히 저서생물인 패류에게 얼마나 영향을 미치는지를 살펴보았다. 이를 위해 강원도 북부 해역에 주로 서식하는 북방대합(Pseudocardium sachalinensis)에게 Sea-Nine 211을 강제적으로 주사하여 alkoxyresorufin 탈알킬화효소인 EROD와 MROD의 활성 변화를 4일째까지 조사하였고, 비교를 위해서 tributyltin chloride (TBTC)도 사용하였다. 그 결과, CYP1A1의 지표효소인 EROD활성은 Sea-Nine 211 및 TBTC주사구 모두 sham구와 차이가 없었지만, CYP1A2의 지표효소인 MROD활성은 Sea-Nine 211 주사구가 sham구에 비해 유의적으로 높았으므로 Sea-Nine 211에 의해 유도된 것이라 여겨진다. 이것은 북방대합에도 CYP1A2가 존재할 수 있음을 보여준다.

• 한국식품영양과학회지
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• 제31권5호
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• pp.819-825
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• 2002

본 연구는 메탄올과 물에서 각각 추출한 다시마 추출물을 급여한 흰쥐에게 당뇨를 유도하고 다시마 추출물의 섭취가 당뇨병의 혈관계 합병증의 유발과 관련되는 체내 지질대사의 변화에 미치는 영향을 조사하고자 하였다. 흰쥐에게 다시마의 메탄올추출물(2%, w/w)과 물추출물(4%, w/w)을 식이에 첨가하여 4주간 급여하고, streptozotocin(STZ, 45 mg/kg BW)으로 당뇨를 유도한 후 혈당, 혈중 콜레스테롤과 중성지질, 변의 수분 함량과 중량, 변의 스테로이드 및 담즙산 함량을 측정하였다. 당뇨 유발로 인해 흰쥐의 체중 감소가 현저하였으며 식 이에 따른 유의적인 차이는 나타나지 않았지만 메탄올추출물 급여군보다 물추출물 급여군에서 당뇨에 의한 체중감소가 적은 것으로 나타났다. 식이에 따른 식이효율의 차이는 나타나지 않았으나 식이 섭취량은 물추출물 급여군이 유의적으로 낮은 경향이었다. 혈당 변화는 당뇨를 유도하고 다시마추출물을 급여하지 않은 대조군에 비해 다시마추출물 급여군에서 유의적으로 감소하였으나 추출물의 종류에 따른 차이는 나타내지 않았다. 중성지방 함량은 대조군에 비해 다시마추출물을 급여한 군에서 중성 지질 함량이 유의적으로 감소하는 경향을 나타내었으나 추출물간의 차이는 관찰되지 않았다. 인지질 함량은 다시마추출물 급여군에 비해 대조군에서 약간 높았으나 메탄올추출물과 물추출물간의 차이는 관찰되지 않았다. 혈장에서의 총 콜레스테롤 함량은 실험군간의 차이를 보이지 않았다 HDL-콜레스테롤 함량은 실험군간의 유의적인 차이는 없으나 대조군과 메탄올추출물 급여군에 비해 물추출물 급여군에서 그 함량이 높았다 분변의 건조중량은 다시마의 물추출물 급여군에서 유의적으로 증가하였다. 분변 중의 수분 함량은 유의적이지는 않지만 대조군이나 메탄올추출물 급여군보다 물추출물 급여군에서 증가하는 경향이었다. 변으로 배설되는 콜레스테롤 함량은 메탄올과 물에서 각각 추출한 다시마 추출물 급여군이 대조군에 비해 유의적으로 높았으며, 특히 물추출물 급여군에서 가장 많이 배설되었다. 하루에 변으로 배설되는 coprostanol함량은 다시마의 물추출물 급여군에서 유의적으로 증가되었다 변으로 배설되는 담즙산의 함량은 메탄올과 물추출물 급여군에서 대조군에 비해 유의적으로 높았다 이상과 같은 결과를 통해서 볼 때 다시마추출물 섭취는 콜레스테롤과 같은 중성스테로이드의 배설을 촉진시킴으로써 당뇨로 인해 발생하기 쉬운 합병증인 동맥 경화증의 예방적 효과에 기여할 수 있으리라 사료된다.

• 수산해양교육연구
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• 제10권2호
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• pp.239-261
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• 1998

This thesis is concerned with international fisheries cooperation among Korea, China and Japan in the Yellow sea and the East China sea. For this purpose, considerated international fisheries problems relation with these countries refer to literature. Specially adjusted the focus founding of necessity and methods about international fisheries cooperation among these countries. The conclusion is as followed; At first, these countries necessity required international fisheries cooperation because of following reasons. 1. These countries have legal duties for conservation and utilization of marine living resources according to united nations convention law of the sea. 2. These countries that jointly owned semi-closed sea have legal duties for cooperation in respect of fisheries and environment problems. 3. These countries belongs to a same ecosystem and shared with staddling stocks in the Yellow sea and the East china sea. The Second, these countries certainly required international fisheries cooperation following methods. 1. These countries must establish marine area for joint control of marine living resources. 2. These countries must establish tentatively named "International fisheries cooperation body" for deal with comprehensive problems about fisheries.