• 생명과학회지
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• 제14권3호
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• pp.453-458
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• 2004

콩의 oil 및 단백질은 식품에서 매우 중용한 영양학적인 구성요소이다. Oil및 단백질과 같은 종자 구성물질들은 polygenetic 형질들로 되어있다. 본 시험은 큰올콩과${\times}$익산10호의 RIL 계통과 SSR marker를 이용하여 유전자 지도를 작성하고, 이를 바탕으로 oil 및 단백질 함량과 관련된 양적형질 유전자좌(QTLs)를 탐색하였다. Oil함량과 관련된 QTLs는 연관군 C2와 satt100과 연관군 DIb+W의 satt546및 연관군 L의 satt418의 세 개의 독립적인 QTLs를 확인하였다. 단백질 함량에 있어서는 연관군 B2와 J 및 L에 각각 satt556과 satt414 및 satt238의 marker에서 독립적인 QTLs를 확인하였다. 본시험의 결과, oil 및 단백질 함량과 관련된 공통의 QTL은 연관군 L이었다. 한편, oil 및 단백질과 같은 종자구성물질은 주로 환경적인 stress및 종자의 크기 등에 의해서 구성되어지는 것으로 생각된다.

• 공업화학
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• 제16권1호
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• pp.21-27
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• 2005

In order to conduct research on oil originated in Mongolia for further application of petroleum not only as fuel but also as raw material for organic synthesis, we need to study the physical, chemical characteristics and individual, group hydrocarbon's compositions of main petroleum fractions. A number of studies and surveys on the physical and chemical characteristics, group hydrocarbon's composition of petroleum deposits in Zuun-Bayan, Sukhaibulag, Tsagaan Elst, Tamsagbulag have been carried out earlier through n-g-M, aniline point and dispersimetric methods successfully. Yet a detailed chromatographical and NMR spectroscopic study for the individual hydrocarbon's composition of Tamsagbulag oil main fractions has not been conducted. In the present study the results of GC analyses of gasoline fractions of wells 19-3, 19-13 and 19-10, Tamsagbulag (Eastern Mongolia) were presence. The gasoline fractions of given wells were characterized by the high concentration of paraffins and presence of trace amount of olefins. There were identified 69 paraffins, 45 naphthenes, 41 aromatics and 3 olefins in total 158 individual hydrocarbons from each samples of gasoline fraction. The first attempts to classify Tamsagbulag oil under the individual hydrocarbon's composition data were successfully conducted and the supposition of a genetic classification of given oil as "sapropelic" type was made.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2002년도 proceedings of the second asia international conference on tribology
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• pp.291-292
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• 2002

Using a low viscosity synthetic traction oil and a low viscosity mineral oil with nearly equal viscosity grade of ISO VG 32, the effect of kind of oil on the fatigue life of bearing steel rollers was examined. A pair of rollers finished the contact surfaces to a mirror-like condition were driven under rolling with sliding conditions of s = -3.2% and a maximum Hertzian stress in the range of $P_H=2.8GPa{\sim}4.0GPa$ was applied in point contact condition. As a result of experiments, the fatigue life with a mineral oil was longer than that with a traction oil under higher stress conditions above $P_H=3.4GPa$. Based on the numerical calculation results of the thermal EHL which simulates the present experiment, the authors discuss the reason why such a difference in the fatigue life comes out.

• Journal of Microbiology and Biotechnology
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• 제23권1호
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• pp.106-117
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• 2013

Microbial enhanced oil recovery (MEOR) is one of the most economical and efficient methods for extending the life of production wells in a declining reservoir. Microbial consortia from Wafra oil wells and Suwaihat production water, Al-Wusta region, Oman were screened. Microbial consortia in brine samples were identified using denaturing gradient gel electrophoresis and 16S rRNA gene sequences. The detected microbial consortia of Wafra oil wells were completely different from microbial consortia of Suwaihat formation water. A total of 33 genera and 58 species were identified in Wafra oil wells and Suwaihat production water. All of the identified microbial genera were first reported in Oman, with Caminicella sporogenes for the first time reported from oil fields. Most of the identified microorganisms were found to be anaerobic, thermophilic, and halophilic, and produced biogases, biosolvants, and biosurfactants as by-products, which may be good candidates for MEOR.

• 건축역사연구
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• 제32권5호
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• pp.107-117
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• 2023

There are records and claims that tung oil was applied to Korean traditional buildings and furniture as finishing paint. Records of the use of tung oil(桐油) exist in the Annals of the Joseon Dynasty(朝鮮王朝實錄) and The Royal Protocols of the Joseon Dynasty(朝鮮王朝儀軌). However, there is also a claim that tung oil was not produced in Korea on its own, and that tung oil was not applied to important buildings such as palaces. Silhak scholar(實學者) Seo Yu-gu says that in Korea, people do not know how to grow tung trees, and boiled perilla oil is called tung oil. If tung oil was used in the Joseon Dynasty, it would be necessary to use tung oil for waterproof coating to preserve current architectural heritage, otherwise, tung oil coating would not be desirable. Analyzing the Yeonggeon Uigwe(營建儀軌) among the Joseon Dynasty's Uigwes shows that tung oil is neither mentioned nor used. In addition, as a result of analyzing the Uigwes mentioned in tung oil, it was found that perilla oil or Myeongyu(明油), not tung oil, was recorded in the actual material used. Therefore, the records of the use of tung oil during the Joseon Dynasty can be seen as records using Myeongyu(明油) or Beopryeon perilla oil(法煉荏油).

• 대한화장품학회지
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• 제32권3호
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• pp.149-152
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• 2006

천연물 유래의 잇꽃 oleosomes은 미래 에너지 자원으로 사용되며 씨 안쪽에 트리그리세라이드를 저장한 작고($1{\sim}3{\mu}m$) 둥근 모양의 저장소이다. Oleosome의 표면은 고분자의($20{\sim}24$ KDa) oleosin 단백질로 덮여 있으며 유화 특성을 나타낸다. 전통적으로, 잇꽃처럼 오일을 내포하고 있는 씨앗의 Oleosomes은 내부에 있는 오일을 분리하기 위하여 단순히 분쇄하는 방법을 사용하였다. 특허 받은 DermaSphere 기술은 손상되지 않은 상태의 oleosomes의 분리가 가능하다. 분리된, 이 원료는 일반적으로 잇꽃 오일과 관련된 피부 유연제, 보습제, 산화 방지제들을 전달하는 제형에 사용될 수 있다. 그러나, 현재의 에멀젼화된 oleosin 단백질이 둥근 오일 바디를 덮고 있기 때문에, oleosomes은 전형적인 oil-in-water (O/W) 유상액에서 다른 oil phase를 에멀젼화할 뿐만 아니라 자기 유화 특성도 가지고 있다. Oleosomes은 화장품 제형에서 유상의 비 활성 부분으로 역할을 하고 있다. 천연 oleosomes은 다양한 유상 활성 성분들을 포집할 수 있으며 화장품 효능 증진을 위한 전달 시스템으로 사용 될 수 있다. 또한, Oleosomes은 방향제, 비타민, 방충제, UV chromophores 같은 다양한 물질들을 포집 할 수 있었다. 이러한 oleosomes은 제품내에 있는 활성물질들을 보호하거나, 시간이 경과에 따른 활성물질의 적절한 방출을 제어하는데 사용 될 수 있다.

• 한국식품과학회지
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• 제25권5호
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• pp.438-443
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• 1993

Physico-chemical properties of glucitol fatty acid polyesters (GPE)-one of the potential fat substitutes-were analyzed and compared with conventional edible oil. The refractive Index, apparent viscosity and melting point of S-GPE (soybean oil GPE) were 1.472, 103 cps. at $37^{circ}C\;and\;-53^{\circ}C$, respectively. S-GPE were liquid at room teperature and the Yellowness of S-GPE was slightly stronger than that of soybean oil. The acid value and smoke point of S-GPE were 0.06 and $200^{\circ}C$. To supplement the weak thermal stability of S-PEG, SP-GPE (soybean-palm blended oil GPE) was prepared with soybeanpalm blended oil (70% of soybean oil and 30% of palm oil). The appearance and color of SP-GPE was not much different from S-GPE but the smoke point of that was increased to $210^{\circ}C$. It means that thermal stability of GPE can be enhanced by increasing saturation of the fatty acid composing GPE. Because most of physico-chemical properties of S-GPE or SP-GPE were similar to conventional edible oil, they are expected to be considered as a potential fat substitute with further study for confirming the safety.

• Journal of Electrical Engineering and Technology
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• 제13권3호
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• pp.1337-1345
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• 2018

The reliability of power transmission and distribution depends up on the consistency of insulation in the high voltage power transformer. In recent times, considering the drawbacks of conventional mineral oils such as poor biodegradability and poor fire safety level, several research works are being carried out on natural ester based nanofluids. Earlier research works show that sunflower oil has similar dielectric characteristics compared with mineral oil. BIOTEMP oil which is now commercially available in the market for transformers is based on sunflower oil. Addition of nanofillers in the base oil improves the dielectric characteristics of liquid insulation. Only few results are available in the literature about the insulation characteristics of nano modified natural esters. Hence understanding the influence of addition of nanofillers in the dielectric properties of sunflower oil and collecting the database is important. Considering these facts, present work contributes to investigate the important characteristics such as partial discharge, lightning impulse, breakdown strength, tandelta, volume resistivity, viscosity and thermal characteristics of $SiO_2$ nano modified sunflower oil with different wt% concentration of nano filler material varied from 0.01wt% to 0.1wt%. From the obtained results, nano modified sunflower oil shows better performance than virgin sunflower oil and hence it may be a suitable candidate for power transformer applications.

• 통상정보연구
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• 제14권3호
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• pp.209-227
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• 2012

글로벌 금융위기의 진원지인 동북아시아 지역은 전통적으로 석유의 생산 및 소비 불균형이 심화된 지역이며, 최근에는 급증하는 석유거래로 인해 저장 및 수송설비의 부족현상까지 겪고 있어 안정적 석유 공급을 위협하고 있다. 따라서 동북아시아 지역 내 독립적인 석유물류허브 기능을 갖춘 시설과 석유거래의 기능까지 담당할 수 있는 시장의 형성이 요구되고 있다. 본 연구에서는 동북아 지역의 석유물류허브 구축 후보 국가를 대상으로 한 석유산업 관련 설비인 정제시설의 정태적 및 동태적 효율성 분석을 통해 시사점을 도출하였다. 동북아 역내 주요 국가들의 석유정제설비의 효율성은 우리나라가 가장 높은 것으로 나타났으며 우리나라가 동북아시아 지역의 석유물류거점의 역할을 수행하기 위해서는 정부의 적극적인 정책지원이 필요하다.

• 자원ㆍ환경경제연구
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• 제26권3호
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• pp.451-472
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• 2017

OPEC의 생산량 발표는 원유 가격에 중대한 영향을 미치는 공급교란 요인이다. 본 연구에서는 OPEC 발표가 원유 시장에 미치는 영향을 사건연구 방법론을 이용하여 분석하였다. 특히 유가 변동 및 구조변화 시기를 고려하여 유가 기간을 3개 구간으로 구분하고, OPEC의 감산, 증산, 유지 발표가 WTI 원유 수익률에 미치는 영향을 분석하였다. 분석 결과, 각 기간별로 OPEC 발표에 따른 비정상 수익 발생의 정도와 방향이 다름을 확인하였다. 또한 유가 급등기와 급락기를 구분하여 OPEC의 생산량 유지 발표의 영향을 분석한 결과, 유가 급락 조정 기간에 유지 발표에 따른 현저한 양(+)의 비정상 수익이 유의하게 발생하였다. 본 연구는 유가 변동 시기별 OPEC 발표의 영향 및 원유거래 전략에 대한 정책적 시사점을 제공한다.