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포스터 전시회 : 분사압력 변화에 따른 디젤-DME연료의 다단분사 특성에 관한연구
정연호 ( Yun Ho Jeong ),양지웅 ( Ji Woong Yang ),오충환 ( Chung Hwan Oh ),임옥택 ( Ock Taeck Lim ),정수진 ( Soo Jin Jeong ),오세두 ( Se Doo Oh ) 한국액체미립화학회 2013 한국액체미립화학회 학술강연회 논문집 Vol.2013 No.-
An investigation on spray characteristics of fuels which diesel and di-methyl ether(DME) with change of injection pressure used the multi-injection in constant volume combustion chamber(CVCC). Diesel was already used famous fuel which we could use. DME showed similar features with diesel like as cetane number, auto-ignition temperature. High cetane number of diesel and DME could make possible to compression ignition. DME showed different atomization from diesel due to evaporating pressures and boiling points. Experiments were carried out in CVCC equipped with Delphi solenoid 6-hole type injector and the spray characteristics of diesel and DME were tested the various pre and pilot injection. Terms of injections and a number of injections in multi-injection has been controlled. Experiments were performed in 2 types that 1500rpm , 2000rpm and under the condition of injection ranging from 100bar to 500bar. From the results of this experiment diesel showed longer spray penetration than DME. That result showed different of atomization speed DME and diesel. Result of high injection pressure condition showed similar spray characteristics diesel and DME. After this investigation, possibilities of the using the DME in fuel business would be expected.
En-Route Trajectory calculation using Flight Plan Information for Effective Air Traffic Management
Kim, Yong-Kyun,Jo, Yun-Hyun,Yun, Jin-Won,Oh, Taeck-Keun,Roh, Hee-Chang,Choi, Sang-Bang,Park, Hyo-Dal Korea Information Processing Society 2010 Journal of information processing systems Vol.6 No.3
Trajectory modeling is foundational for 4D-Route modeling, conflict detection and air traffic flow management. This paper proposes a novel algorithm based Vincenty's fomulas for trajectory calculation, combined with the Dijkstra algorithm and Vincenty's formulas. Using flight plan simulations our experimental results show that our method of En-route trajectory calculation exhibits much improved performance in accuracy.
Choi, Jung-Hwa,Sung, Bong-Jun,Lee, Dong-Woo,Kim, Jong-Bin,Oh, Taeck-Yun,Kim, Jung-Nyun The Korean Society of Fisheries and Aquatic Scienc 2011 Fisheries and Aquatic Sciences Vol.14 No.4
The feeding habits of yellow goosefish Lophius litulon and John Dory Zeus faber were studied by analyzing the stomach contents of specimens collected in the South Sea of Korea. In total, 132 hauls were taken during six experimental trawl survey (Tamgu 1) cruises conducted on a seasonal basis (March 2005-October 2007). The main prey items of the two species were similar. Fishes and crustaceans were the most important prey, with neither species showing ontogenetic changes in preferred species. Specifically, Pennahia argentata was the preferred prey item of L. litulon, whereas Trichiurus lepturus and Engraulis japonicus were preferred by Z. faber. Larger Z. faber (>24 cm) preferred bigger prey such as T. lepturus and Larimichthys polyactis, while smaller Z. faber preferred E. japonicus and Acropoma japonicum.
( Jung Hwa Choi ),( Bong Jun Sung ),( Dong Woo Lee ),( Jong Bin Kim ),( Taeck Yun Oh ),( Jung Nyun Kim ) 한국수산과학회(구 한국수산학회) 2011 Fisheries and Aquatic Sciences Vol.14 No.4
The feeding habits of yellow goosefish Lophius litulon and John Dory Zeus faber were studied by analyzing the stomach contents of specimens collected in the South Sea of Korea. In total, 132 hauls were taken during six experimental trawl survey (Tamgu 1) cruises conducted on a seasonal basis (March 2005-October 2007). The main prey items of the two species were similar. Fishes and crustaceans were the most important prey, with neither species showing ontogenetic changes in preferred species. Specifically, Pennahia argentata was the preferred prey item of L. litulon, whereas Trichiurus lepturus and Engraulis japonicus were preferred by Z. faber. Larger Z. faber (>24 cm) preferred bigger prey such as T. lepturus and Larimichthys polyactis, while smaller Z. faber preferred E. japonicus and Acropoma japonicum.
민용훈 ( Yong Hun Min ),박승민 ( Seung Min Park ),이귀자 ( Kui Ja Lee ),오영택 ( Young Taeck Oh ),안희철 ( Hee Cheol Ahn ),손유동 ( You Dong Sohn ),안지윤 ( Ji Yun Ahn ),이영환 ( Young Hwan Lee ),하상욱 ( Sang Ook Ha ),김유정 ( Yu 대한임상독성학회 2015 대한임상독성학회지 Vol.13 No.1
Purpose: Many patients who are acutely poisoned with organophosphorus pesticides have co-ingested alcohol. The purpose of this study was to identify the factors that influence mortality in organophosphate intoxication and the differences between alcohol coingested patients and non-coingested patients, looking at vital signs, length of admission, cholinesterase activity, complications, and mortality. Methods: All patients visiting one Emergency Department (ED) with organophosphate intoxication between January 2000 and December 2012 were reviewed retrospectively. The patients were divided into two groups, alcohol coingested group and non-coingested group. Results: During the study period, 136 patients (alcohol coingested group, 95 patients; non-coingested group, 41 patients) presented to the ED with organophosphate intoxication. Seventy-one alcohol coingested patients (74.1%) vs. 16 non-coingested patients (39.0%) received endotracheal intubation, with results of the analysis showing a clear distinction between the two groups (p=0.001). Twenty-three alcohol coingested patients (24.2%) vs. 1 non-coingested patient (2.4%) required inotropics, indicating a significant gap (p=0.002). Twenty-eight alcohol coingested patients (29.5%) vs. 2 non-coingested patients (4.9%) died, with results of the analysis showing a clear distinction between the two groups (p=0.002). Conclusion: In cases of organophosphate intoxication, alcohol coingested patients tended to receive endotracheal intubation, went into shock, developed central nervous system complications, and more died.