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박덕신,황인조,김동술 경희대학교 환경연구소 1998 環境硏究 論文集 Vol.8 No.-
Predictions by four atmospheric dispersion models such as TCM, ISCLT, Valley, and TEM were relatively compared in the Suwon City. Each dispersion model was seasonally modified with hourly TSP, SO_(2), NO_(2), and CO ground-level concentration data observed at two telemetered air monitoring sites operated by the Ministry of Environment. Prediction by each model was performed with the same input data prepared by intensive investigation of meteorological data as well as point, area, and line emission inventories in the target area. To present the paired comparison of each model, relative errors among four different models were calculated with reference statistics which were based on the predicted arithmetic means at a number of 48 different sites for each model. Since the main objective in this study was in the relative differences between models, it is impossible to quantitatively determine rank order for models. However, the results by four models show that the maximum relative errors in TSP, SO_(2), NO_(2), and CO concentration were 97.1%, 92.5%, 118.4%, and 49.7%, respectively.
철도디젤차량에서 배출되는 오염물질의 배출량 산정방법 개발
박덕신,김동술 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.4
Up to the present time, many methods to estimate emissions from a particular diesel engines have wholly depended on the quantity of diesel fuel consumed. Then, the recommended emission factors were normalized by fuel consumption, and further total activity was estimated by the total fuel consumed. One of main purposes in the study is newly to develop emission factors for the railroad diesel rolling stock (RDRS) and to estimate a total amount of major gaseous pollutants from the RDRS in Korea. Prior to develop a Korean mode emission factor, the emission factor from the USEPA was simply applied for comparative studies. When applying the USEPA emission factors, total exhaust emissions from the RDRS in Korea were estimated by 28,117tons of NOx. 2,832.3tons of CO, and 1,237.5tons of HC, etc in 2001. In this study. a emission factor for the RDRS. so called the KoRail mode (the Korean Railroad mode) has been developed on the basis of analyzing the driving pattern of the Gyeongbu-Line especially for the line-haul mode. Explicitly to make the site specific emission factors, many uncertainty problems concerning weighting factors for each power mode, limited emission test, incomplete data for RDRS, and other important input parameters were extensively examined. Total exhaust emissions by KoRail mode in Korea were estimated by 10,960tons of NOx, and 4,622tons of CO, and so on in the year of 2001. The emissions estimated by the USEPA mode were 2.6 times higher for NOx. and 1.6 times lower for CO than those by the KoRail mode. As a conclusion, based on the emission calculated from both the USEPA mode and the KoRail mode, the RDRS is considered as one of the significant mobile sources for major gaseous pollutants and thus management plans and control strategies for the RDRS must be established to improve air quality near future in Korea.
이상록,김덕술 동아대학교 공과대학 부설 한국자원개발연구소 1994 硏究報告 Vol.18 No.1
A method of Safe operation of bioreactor with purge-recycle streams which the substrate concentration is inhibited by the specific growth of the biomass is proposed. A region of the phase plane (safe operating region) in which all trajectories lead to the desired steady in bioreator is determined, and a method for determining the safe start-up procedure is proposed by which the washout of raection system before approaching a desired steady state can be prevented during the start-up operation.
RPG TYPE MOBILE HEALTHCARE SYSTEM DEVELOPMENT
Duck-Sool Kim,Dong-Hoon Lee,Nam-Suk Kim 한국멀티미디어학회 2007 한국멀티미디어학회 국제학술대회 Vol.2007 No.-
It will create profits to company with less investment in time and expenses regarding the forced game over through the online mobile game management system. It has been attempted to approach a method to develop games efficiently. Many companies in game industries have their own developing process. Domestically and abroad many internet users are experiencing the Network mobile games with the fast network environment, it market is increasing by 30% each year. There are a lot of young generation and the customer which uses mainly mobile contents must study contents service of a new form satisfy demand of customer, and to be able to get. This Paper to have seen to this developed mobile interactive mode service formal RPG type mobile Healthcare System.
Thermal Decomposition of Copolymers of Butyl methacrylate and Styrene Produced in a CSTR
Duck-Sool Kim,Nam-Seok Kim,Keun-Ho Park 한국유화학회 2002 한국응용과학기술학회지 Vol.19 No.4
Thermal decomposition of the copolymer of butyl methacylate(BMA) with styrene(St) was investigated. The copolymer Was obtained at 80 ℃ in a continuous stirred tank reactor(CSTR) using toluene and benzoyl peroxide(BPO), as solvent and initiator, respectively. The reactor volume was 0.3 liters and residence time was 3 hours. The thermal decomposition followed the second order kinetics for BMA/St copolymer. The activation energies of thermal decompositon were in the ranges of 38 ~43 kcal/mol for BMA with St copolymer and a good additivity rule was observed with the composition of copolymer. The thermogravimetric trace curve agreed well with the theoretical calculation.
Twitch Stimulation에 의한 Myosin Heads 움직임의 시간분석 연구
김덕술 ( Duck Sool Kim ),정정수 ( Jung Su Jung ),박근호 ( Keun Ho Park ) 한국유화학회 2004 한국응용과학기술학회지 Vol.21 No.2
N/A On contraction of the muscles, marked changes in X-ray reflections are observed, suggesting that conformational changes of contractile molecules and the movement of myosin heads during muscle contraction. Time slice requires tension peak after the onset of stimulation and the height of tension peak depends on the number of twitch cycle. The muscles were stimulated by five successive stimuli at an interval of 80 ms started while the tension was still being exerted by the muscles. The intensity of I_(11), I_(10), 143Å and 215Å reflection measured with 5ms time resolution and is recorded in isometric tension. The peak height of In and 143Å intensity is changed after the onset of a stimulation I_i, and the length of twitch is shortened by successive twitches in the case of stimulation T_i. On the other hand, the peak height of I_(11) and 215Å intensity starts to decrease at the 1st twitch and remains constant at low peak height without appreciable recovery during the contraction term. In the case of successive twitch stimulation, the myosin heads of muscle are once moved from their resting position and never returned to their initial position.
컴퓨터 분석에 의한 Myosin Head의 SH가 Actin-Myosin Cross-Bridges에 따른 구조변화 연구
김덕술 ( Duck Sool Kim ),옥수열 ( Soo Yol Ok ),박근호 ( Keun Ho Park ) 한국유화학회 2005 한국응용과학기술학회지 Vol.22 No.1
N/A IASL(iodo acetamide) and MSL(maleimide) disordered the orderly helix arrangement of myosin in the rest state of spin level. Especially the effect of IASL was great. Equatorial reflection(10,11) change inferred that myosin head was moved to the vicinity of actin filament by spin level. The intensity change of 143Å and 72Å could offer information of the mass projection of population of myosin heads along the filament axis. The slope of intensity profile of the mass projection of 143Å and reflection of IASL is appeared and that of MSL is appeared sharply. The decrease of 215Å reflection intensity is appeared the periodical characteristic of 143Å reflection by spin label. The raise of MSL actin reflection at 51Å and 59Å in the actin reflection change refers that the shifted myosin head binds a certain actin or changes an actin structure by spin label effect. Because iodo acetamide has a tendency to decease the actin reflection, actin close not bind myosin head. From this result, we could conclude that LASL and MSL are spin labeled on SH of myosin head and disordered the helix arrangement of actin.
김덕술 ( Duck Sool Kim ),노언주 ( Eon Joo Roh ) 한국유화학회 2011 한국응용과학기술학회지 Vol.28 No.2
Coumarin derivatives were shown to possess valuable pharmacological properties such as anticancer/anti carcinogenic, anti-inflammatory, anti helicobacter, anti genotoxic, neuroprotective and dietary effect. In this study, novel coumarin derivatives structurally related to 7-geranyloxycoumarin were effectively synthesised in good yields by Cs2CO3/acetonitrile in mild condition. The synthesis of geranyloxycoumarin derivatives in weak base(Na2CO3, K2CO3, Cs2CO3 etc)/CH3CN at room temperature obtained in good yield. On the other hand, the reaction of geranyloxycoumarin formation in strong base(NaOH, KOH, CsOH etc)/CH3CN at reflux condition obtained in low yield.