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차미선,손홍주,이건,고명선,이상준,이종근 부산대학교 환경문제연구소 1996 環境硏究報 Vol.14 No.1
Microorganisms producing bioemulsifier were isolated from the sea water in Pusan costal aera. The isolated strain which had the highest emulsification activity and stability was identified as the genus Acinetobacter from the results of morphological, cultural and biochemical tests and named Acinetobacter sp. EL-C6 for convinience. The compositions of optimum medium for emulsification of crude oil by Acinetobacter sp. EL-C6 were crude oil 2%, NH_4NO_3 0.2%, K_2HPO_4 0.01%, MgSO_4·7H_2O 1%, CaCl_2·2H_2O 0.1%, NaCl 3% and the initial pH 7.5. The cultivation for emulsification of crude oil was carried out in 500m1 shaking flask containing 100m1 of the optimum medium at 30℃. The highest emulsification was observed after 5 days. The utilization on the various hydrocarbon of the Acinetobacter sp. EL-C6 was showed that the utilization of n-alkane compounds were better than that of aromatic compounds. Among the petroleum compounds, by Acinetobacter sp. EL-06.
KS H ISO 1242 표준의 평가 : 라반딘 정유의 산값 측정
전혜림,이은지,장혜진,손현화,김건,김남선,전명숙,이동선 서울여자대학교 2010 자연과학연구논문집 Vol.22 No.-
The acid value (AV) as well as the ester value of essential oil is an important index to evaluate quality of essential oil. The official standard analytical method of KS H ISO 1242 dealing with “Essential oils - Determination of acid value” was assessed experimentally using two lavandin essential oils obtained in France as an example. One French lavandin oil sample showed the results of AV= 0.9 by both indicator method and potentiometry. Another sample showed AV = 1.9 by indicator method and AV = 1.6 by potentiometry. Latter lavandin oil sample exhibited significantly higher acid value than maximum value of 1 described in the standard. This result suggests that latter lavandin oil was contaminated, because this oil was contained in an orange juice bottle. Results of this study proved that KS H ISO 1242 could be used as a suitable scientific standard for the determination of acid value of essential oils.
손명선(Son, Myoung-Sun),엄범규(Eom, Beom-Gyu),이희성(Lee, Hi-Sung) 한국소음진동공학회 2011 한국소음진동공학회 논문집 Vol.21 No.7
The DMT freight is judged that economic performance is good because can increase cargoes than existing freight. However, the existing freight cars, each with a different balance to the body structure is bogie because the vibrations may occur. Thus, by minimizing vibration over the existing freight securing the safety of the driving if you will not have major problems in cargoes. In this study, multi-body dynamic analysis tool, VI-Rail using the actually Gyeongbu Railroad line and an empty, full freight condition include curve radius, track irregularity, The DMT freight of the derailed wagons were assessed for safety analysis. Full and empty freight conditions for parity in the Gyeongbu Railroad line(Dongdaegoo${\leftrightarrow}$Kyungsan) derailment safety analysis, such as derailment coefficient and the wheel unloaded, echoing the curve and the orbit is affected by the irregularity was found. Full freight condition than the empty conditions showed a significant derailment safety. Overall, the limits of derailment coefficient(Q/P = 0.8) and wheel unload decrement limits(${\triangle}P/P$ = 0.6) is less safe with me confirmed that the derailment safety.
곡선부 통과열차의 레일 경좌 변화에 따른 주행안전성 해석
손명선(Myoung-Sun Son),엄범규(Beom-Gyu Eom),강부병(Bu-Byoung Kang),이희성(Hi Sung Lee) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
The rail inclination produces a wider bearing area between the wheel and the rail by moving the wheel rail contact area away from the gauge towards the centre of the railhead thus improving the wear pattern of the railhead and wheel treads. It is essential to keep the rail inclination within the allowable range to ensure optimum track geometry. Neglecting the rail inclination geometrical parameters in a track quality evaluation can cause safety of railway vehicle and serviceability problems. In this paper we examined the effect of the rail inclination in general geometry state of the railway track using VI-Rail and analyzed running safety when the railway vehicle passing through curves depending on change of the rail inclination and running speed.
Enhancing Safety Awareness through Cigarette Waring Pictures: An Investigative Study
( Son-yo-han ),( Han-myoung-jun ),( Song-ji-hoon ),( Shin-ha-yeon ),( An-sun-min ),( Min-seung-nam ) 한국감성과학회 2023 한국감성과학회 국제학술대회(ICES) Vol.2023 No.-
This study focuses on depicting images, like those on cigarette packs, on safety and health signs. To this end, a survey was conducted, followed by a word cloud analysis. The results indicated that illustrating the cost of cigarettes on safety and health signs helps to increase awareness of the associated risks.
Extracting the workflow critical path from the extended well-formed workflow schema
Son, Jin Hyun,Sun Kim, Jung,Ho Kim, Myoung Elsevier 2005 Journal of Computer and System Sciences Vol.70 No.1
<P><B>Abstract</B></P> <P>The critical path in a workflow schema is defined as the longest execution path from the start activity to the end activity. It can be utilized in many workflow issues such as workflow resource and time management. However, little work has been done on the critical path in a workflow because workflow control flows are much more complex than those represented with ordinary graphs and networks. In this paper, we first describe our workflow model with a set of workflow control constructs that provide sufficient power to express the models of most of today's business processes. Then, we propose a systematic method of identifying the critical path for a given workflow schema. Our proposed method is based on queuing theory because operational characteristics of the workflow schema can be modeled by a M/M/1 queuing network.</P>