• 해양환경안전학회지
• /
• 제2권1호
• /
• pp.57-65
• /
• 1996

The latest date, No. 1 YouII was grounded and sunk into the sea at MAMHYUNGJEDO ( South brother Island) in Sep. 21. 1995, and M.V. Sea Prince of V.L.C.C also made a big oil poullution accident owing to Typhoon "Paei" at front sea of Yeu Choun on Jul. 25. 1995. The large or small scall scale of oil poullution accident frequently was occurred about 300-350 cases per ine(1) year. The countries advanced in marine relations like as, nited Kingdom and Japan, have perfect system The country of expert education, training and oil recovery equipments in oil poullution accidents. The large quantity oil skimming ship's basic condition need general skimming ship which was high speed and large quantity skimming ability , and hve to store the recovered oil into tanks This oil skimming shop are composit the skimmer whuch move up and down according to the wace movements, storage tank which storage the recovered oil in after side, transfer pump which transformed from flooding tank to separating tank and separating tank which separated the oil mixtures, Also there are cylindrical floated which keep the auto positing, gate which keep the auto positing, gate which protect and guide the recovering oil from sea and balance weight for skimmer balance. Also there are cylindrical floated which keep the auto positing, gate which protect and guide the recovering oil from sea and balance weight for skimmer balance. The important arrangement is twin arm which moved by two hinge and move te skimming unit by wave movement. In gate of inside, made long wear in the gate bellow position, there are also connected the flexible hose for oil mixtures drop. The separating tank composited with multi-divided bulkhead for ffective oil and sea water separating by settling and flotation principle. As use the above natural princile and equipment, we can remove the large quantity oil by developed oil skimming ship.ming ship.

• 한국식생활문화학회지
• /
• 제23권1호
• /
• pp.26-32
• /
• 2008

: In this experiment, three samples of oils were used. These oils were hydrated soybean oil, pure soybean oil and regular soybean oil. Oil was used after heating at $235-240^{\circ}C$ every four hours term and total heating hours was 16 hours. The physio-chemical analysis and sensory evaluation were performed on these oils. The hydrated soybean oil showed lower acid, peroxide and carbonyl value than the other two oils (p<0.05 or p<0.001). The other two oils were more affected in rancidity than the hydrated soybean oil. In color test, whereas L value lowed during the heating time, a and b value increased during the heating time. The tendency of high L value and low b value in a long-time heating was more apparant on the pure soybean oil and the regular soybean oil than on the hydrated soybean oil (p<0.05). In sensory evaluation, color and rancidity order increased during the heating time. The hydrated soybean oil showed color and rancidity order than the other two oils. In overall quality test, the pure and regular soybean oil that had been used for 12 and 16 hour were not preferable. The hydrated soybean oil that had been used for 16 hour were not preferable. In sensory evaluation, the hydrated soybean oil, the pure and regular soybean oil did not show a apparent difference, although the hydrated soybean oil had a little better scores on the overall quality.

• Tribology and Lubricants
• /
• 제20권1호
• /
• pp.27-32
• /
• 2004

This paper presents unsteady oil flow behaviors in the engine lubrication network to clarify the differences between continuous and discontinuous oil supply crankshaft system. Using commercial network analysis program, Flowmaster2, engine lubrication network system analysis were carried out. And effects of crankshaft speed and supplied oil pressure on pressure fluctuation in oil groove and oil flow rate to each bearing were analyzed.

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2003년도 추계학술대회
• /
• pp.1258-1261
• /
• 2003

Oil supply system is one of the most important part of Turbine. Lubricating oil of bearings supplied by oil pump. Failure of Oil supply pump critical damaged parts of Turbine, especially bearings. In this paper we have discussed the serious damage of turbine bearings due to failure of Oil supply pump.

• 대한가정학회지
• /
• 제33권2호
• /
• pp.143-150
• /
• 1995

This study was carried out in order to compare flavor of sesame oils prepared with Korean and Chinese sesame. There were no significant differences in the fatty acid composition, sesamin and tocopherol content of Korean and Chinese sesame oils. The color of Korean sesame oil was darker than that of Chinese sesame oil. It seemed that of Chinese sesame oil by analysis of aroma characteristics. Sensory evaluation showed that the acceptability of Korean sesame oil was higher than that of Chinese sesame oil in ordor test, whereas there were no significant differences between the acceptability of Korean sesame oil that of Chinese sesame oil in seasoned cucumber test.

• 한국분말야금학회:학술대회논문집
• /
• 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part 1
• /
• pp.594-595
• /
• 2006

Porous bearings are lubricated the oil that is contained in porous metal. Then they are always used with no oil supply, because of that, widely used electric motors. But, if oil flow out less than the limit, troubles often happen. This report shows that attempt of estimating oil quantity in porous bearing by using calculation that based Reynols' equation and Darcy's law, aimed of developing long life bearing. And comparing with experimental and calculation result, we show possibility of estimating rest oil quantity in porous bearing at steadry state by calculation.

• 한국식품영양학회지
• /
• 제25권4호
• /
• pp.770-778
• /
• 2012

In this study, the effects of intake of Acer mono Max. seed oil, and Magnolia denudata seed oil on the lipid levels of mouse blood were compared to those of commercially available vegetable oils. Five ICR mice were each fed a corn oil, Acer mono Max. seed oil, and Magnolia denudata seed oil supplemented diet for a total of 8 weeks. The serum profiles of mice fed Acer mono Max. seed oil and Magnolia denudata seed oil were high in palmitic acid, oleic acid, and linoleic acid. The saturated fatty acid contents of mice fed Acer mono Max. seed oil and Magnolia denudata seed oil were 3.95% and 0.88%, whereas the unsaturated fatty acid contents were 8.71% and 4.60%, respectively. The liver and spleen weights of mice fed Acer mono Max. seed oil were higher than those fed corn oil (p<0.05). Total cholesterol level was highest in mice fed Acer mono Max. seed oil (p<0.05), whereas there were no significant changes in the cholesterol levels of mice fed Magnolia denudata seed oil and corn oil. The HDL-cholesterol levels in mice fed Acer mono Max. seed oil ($175.80{\pm}27.66mg/d{\ell}$) and in those fed Magnolia denudata seed oil ($145.20{\pm}19.10mg/d{\ell}$) were higher compared to those of mice fed corn oil (p<0.05). In conclusion, there were no significant differences in fatty acid composition between mice fed Acer mono Max. seed oil and Magnolia denudata seed oil. Future study on the antioxidant effects of seed oils should be carried out.

• 해양환경안전학회:학술대회논문집
• /
• 해양환경안전학회 2005년도 추계학술대회지
• /
• pp.165-170
• /
• 2005

본 연구는 탱크로리용 디스크식 유회수기 개발을 위한 기초 연구로 기존 유회수기 디스크와 기름의 흡착이 가능하다고 판단되는 몇 가지 재료의 디스크에 대한 유회수 차이를 실험을 통해 비교한 것이다. 실험 결과를 요약하면 다음과 같다. 모든 디스크에서 경유보다는 벙커 A유의 회수량이 높았으며, 경유에서는 디스크 소재별 유회수량이 모든 디스크에서 거의 차이가 없는 반면, 벙커 A유에서는 디스크 소재에 따라 회수 성능이 큰 차이를 보였다. 또한, 디스크 구동 시간대별 회수량은 경유의 경우, 모든 디스크 소재에서 초기 시간대부터 단위 구동 시간당 기름의 회수량 차이가 거의 없는 것으로 나타난 반면, 벙커 A유는 모든 소재에서 구동 초기시간에서 회수량이 직선적으로 증가하고 시간이 경과할수록 증가량이 완만한 경향을 보여 단위 구동 시간당 기름의 회수량이 시간에 따라 차이를 보이는 것으로 나타나 유류의 점도가 디스크 회수 성능에 영향을 미치는 것을 알 수 있었다. 또한, 벙커 A유를 대상으로 전체 회수량에서 순수 유회수량과 함수량을 비교했을 때 창문용 알미늄 소재의 디스크는 다른 재질의 디스크에 비해 기름의 회수량은 차이가 없으면서 상대적으로 물의 회수량은 매우 적게 나타나는 것으로 조사되어 함수량을 고려한 유회수 효율을 고려했을 때 가장 이상적인 결과를 보여주고 있어, 본 연구에서 목적하는 탱크로리 유회수기 디스크 소재로서 가장 유리하다는 것을 알 수 있었다.

• 한국식품영양과학회지
• /
• 제20권4호
• /
• pp.312-319
• /
• 1991

n-3계 EPA 및 DHA를 함유하고 있는 어유 및 $\alpha$- linoleic acid 함량이 많은 들깨유와 n-6계 linoleic acid 의 함량이 많은 옥수수유 및 고추종자유, n-6계 inoleic acid 함량이 많고 ${\gamma}$-linoleic acid를 약 10% 함유한 달맞이꽃종자유가 흰쥐의 혈청 지질 개선에 미치는 영향을 알아보기 위해 혈청 지질 성분을 분석한 결과, 총콜레스테롤 농도는 어유, 들깨유, 옥수수유 급여군이 대조군인 올리브유 급여군 보다 낮은 반면 고추종 자유, 달맞이꽃종자유 급여군에서 높았다. HDL-콜레스테롤 농도는 고추종자유, 달맞이꽃종자유 급여군에서 약간 높게 나타났다. 총콜레스테롤에 대한 HDL-콜레스테롤 농도비는 전 실험군에서 대조군보다 높았다. 유리콜레스테롤은 고추종자유 급여군을 제외한 전 실험군에서 대조군에 비하여 유의성있게 낮았으며 특히 어유, 들깨유 및 옥수수유 급여군에서 더욱 낮게 나타났다. 콜레스테롤 에스테르 농도는 n-6계 다불포화지방산 함량이 많은 고추종자유, 달맞이꽃종자유 군에서 높았다. 총콜레스테롤에 대한 콜레스테롤 에스테르 농도비는 대조군인 올리브유 급여군(62%)보다 전 실험군(70.0%~74.4%)에서 높게 나타났다. 인지질 농도는 어유 및 들깨유 급여군에서 낮았고, 중성지질 농도는 대조군에 비해 들깨유, 어유, 달맞이꽃종자유 군에서 현저히 낮았다. LCAT 활성은 대조군보다 돈지 급여군에서 높은 반면, 다른 실험군에서는 낮게 나타났다.

• 한국식품영양과학회지
• /
• 제15권1호
• /
• pp.75-81
• /
• 1986

w-3계 linolenic acid가 풍부한 들깨기름 및 EPA와 DHA가 함유된 말쥐치기름의 혈청 및 간장의 지질성분에 미치는 영향을 구명하기 위해 지방산조성이 다른 몇가지 유지를 고콜레스테롤 식이 흰쥐에 식이하므로서 혈청 및 간장중의 지질농도에 미치는 영향을 비교 실험하여 다음과 같은 결과를 얻었다. 1. 사료섭취량과 증체량은 전 시험군간에 있어 별다른 차이가 없었다. 2. 혈청의총 cholesterol농도는 soybean oil perilla oil및 file fish oil 식이군이 대조군에 비해 유의적으로 낮았다. HDL-cholesterol 농도는 file fish oil 식이군이 가장 높았으며, perilla oil 식이군도 약간의 상승효과가 있었다. 총 cholesterol에 대한 HDL-cholesterol의 비율은 file fish oil식이군이 가장 높았다. 3. 간장의 총 cholesterol농도는 전 시험군간에 유의적인 차이는 없으나 file fish oil 및 perilla oil 식이군에서 약간 낮은 경향이었다. 4. 혈청의 triglyceride농도는 soybean oil 및 perilla oil식이군이 대조군에 비해 유의적으로 낮았다. phospholipid의 농도는 file fish oil식이군이 가장 낮았으며, soybean oil 및 perilla oil식이군에서도 대조군에 비해 유의적으로 낮았다. 5. 간장중의 triglyceride및 phospholipid의 농도는 전시험군간에 유의적인 차이는 없으나, perilla oil식이군이 약간 낮은 경향이었다. 이상의 결과로 미루어 보아 perilla oil 및 file fish oil은 혈청의 총 cholesterol, 및 phospholipid의 농도저하 효과가 다소 있는 것으로 사려된다.