5- methyl -4- imidazolecarboxylic Acid Ester 연속합성의 반응속도론 및 특성 연구

조욱상,박상진,김학희 ( Wook Sang Cho,Sang Jin Park,Hak Hee Kim ) 한국공업화학회 1994 공업화학 Vol.5 No.6

Ethylacetoacetate로부터 2단계의 연속합성을 통하여 생성되는 5-methyl-4-imidazolecarboxylic acid ester의 합성반응 속도론과 중간 생성물인 α, β-dioxobutyric acid(일명 diketone)의 반응 안정성을 연구하였다. 반응속도 결정단계는 α-acetyl-α-hydroxy iminoacetic acid(oxime)로부터 diketone으로 진행되는 과정으로서 반응속도에 영향을 미치는 주된 인자로는 Oxime, HCl의 농도와 반응온도임을 확인하였고 HCl 농도 4.6∼8.0M, 반응온도 8.5∼20℃의 변화에 따른 diketone의 최대 반응수율 변화는 50∼74%이었다. Power-law 수식모델 및 회분식 반응기 empirical data로부터 diketone 생성반응 속도식을 구하였으며 이 식이 실험 Data와 잘 일치하고 있음을 보였다. 본 연구는 5-methyl-4-imidazolecarboxylic acid ester 연속반응 공정개발의 기초단계로서 반응속도론 연구를 통하여 합성 반응의 특성을 파악하는데 중요한 의의를 두고 있다. The chemistry of 5-methyl-4-imidazolecarboxytic acid ester synthesis involves three distinct reaction steps. Of these the rate of formation of diketone was found to be a function of oxime and HCl concentration and temperature by the batch experiment. The decomposition of diketone was found to be a slow process, whereas temperature was the only variable to affect it significantly. An empirical rate expression for the net formation of diketone fits the experminetal data satisfactorily. The principal objectives of this study are to study the kinetics of the diketone formation reaction and to develop the empirical rate expression.

가르침의 설레임 (스키 강사 경험담)

조욱상 한국스포츠교육학회 2002 한국스포츠교육학회보 Vol.- No.29

관 삽입형 맨홀의 경제성, 시공성, 수밀성 평가에 관한 연구

조욱상,강성욱,이명권,백종갑 대한환경공학회 2005 대한환경공학회 학술발표논문집 Vol.2005 No.12

A Detailed Investigation of Research on Relationships between Physical Education Teachers’ Motor Skill Competence and Students’ Learning

조욱상 한국스포츠학회 2011 한국스포츠학회지 Vol.9 No.4

본 연구는 체육교사의 운동능력과 학생들의 운동학습간의 관계를 분석하는데 주된 목적이 있다. 상당수의 체육교사들과 교사 교육자들은 교사의 운동능력이 학생들의 운동학습에 미치는 영향이 지대할 것이라는 믿음을 가지고 있지만, 이 분야에 대한 연구는 활발하게 이루어 지지 못했다. 본 문헌고찰 연구를 위해 미국의 체육관련 학회지에 수록된모델링과 운동학습에 관한 연구물들이 수집되어졌고 체육교사들의 운동능력의 차이가 학생들에게 어떠한 영향을 미치는 지에 대한 고찰이 이루어졌다. 관련된 주제의 연구가 활발히 이루어지지 않았기 때문에 참고할 수 있는 문헌들의수가 적었고, 이로 인해 본 연구는 음악과 미술과 같은 타 예체능 교과목을 대상으로 한 연구물들과 체육 심리학 분야에서 이루어졌던 모델링 문헌들을 통해 발견된 사실들과 도출된 이론들을 바탕으로 주제에 접근했다. Bandura (1986)의 사회인지 이론 (social cognitive theory)을 기초로 한 관찰 학습과 모델링에 관한 선행연구들은 체육교사의실기 능력, 그들의 모델링, 그리고 학생과 선수들의 운동능력 향상간의 상관관계를 보고해 왔다. 본 연구를 통해 소개된 연구들에 따르면, 같은 예체능 범주에 포함되는 미술과 음악 교과에서의 교사의 실기능력은 학생들의 학습에 현저한 영향을 미치는 것으로 나타났지만 체육 분야에서 발표된 연구들은 체육교사의 운동능력이 미치는 영향에 관한 서로 상이한 결과를 보였다.

고도 하수처리 공정의 최적 제어 알고리즘에 관한 연구

조욱상 수원대학교 산업기술연구소 2003 산업기술연구소논문집 Vol.18 No.-

Because of the limitation of controllable operation variables for the wastewater treatment process with variable hydrodynamic flow patterns, it may preclude the use of this type of nutrient removal activated sludge process. Only temperature and dissolved oxygen (DO) as the operation variables have been used to operate the process. From this point, this study starts to improve treatment efficiency and operability of the process, mentioned above, by the following methodologies: 1) the process and operation data analysis using the process simulation, 2) the determination of optimal control logic or algorithm using the pilot-scaled experimental apparatus and its operations, 3) the applications of experimental and simulation results to find the optimal process operation modes. In this study, it was found that the optimal operation mode, named 'save mode', in the basis of process variables such as the ammonia nitrogen concentration of inlet flow, temperature and flow rate, can reduce the operation cost, comparing with the present normal operation mode. And also, the stable conditions in nitrification were shown by the proportional control of DO with the inlet air flow rate of blower and the mixing rate of mechanical aeration. This study has shown to be considerably feasible for the applications of its results to the commercial scaled wastewater treatment process.

ASRT 공정개념을 적용한 중·소규모 폐수처리 공정의 실험적 평가

조욱상 수원대학교 산업기술연구소 1999 산업기술연구소논문집 Vol.14 No.-

In this study, we tried to study the ASRT(Aerobic Solids Retention Time) process concepts and related reaction mechanisms to apply to small-sized wastewater treatment process(1,000 - 1,300㎥/day). They have basically different operation schemes, compared with the existing process operations, that are to directly withdraw excess sludge from the aeration tank and to alternately keep anaerobic or aerobic conditions in the same reactor by the control of oxygen injection time. The removal efficiency of organic matters, nitrogen and phosphorus is distinctively higher and also the number of unit operations can be reduced to yield the more economic values over the existing process operations.

화옹호 유역의 비점오염부하량 산정에 관한 연구

조욱상 수원대학교 산업기술연구소 2004 산업기술연구소논문집 Vol.19 No.-

In this study, the estimation of non-point source pollutant loads in accordance with the utilization of lands in the area of Hwa-Wong lake was carried out in order to provide basic engineering data for building up the treatment or management facilities applicable to this corresponding area. On the basis of water Qualify and flow measurements at the on-sites around three main streams (Nam-yang, Ja-an and Eo-eun) located in that area, the yearly discharging amount of non-point source pollutants and its contribution rate to the total amount of water pollutants were calculated by applying the effluent coefficients and reasoning equation method incited from references. It was found that the contribution rates of water pollutants resulted from the non-point sources were 79.2%, 81.4%, and 81.1% for BOD, T-N, and T-P respectively. Because of insufficient measuring data including rainfalls and inaccurate local statistics, in the period of this study, the accuracy on estimations needs to be more studied.

로타리 킬른형 소각 반응기 모델링 및 전열해석 연구

조욱상,노성덕,김상욱,장원혁,손성섭,임인순 한국공업화학회 1998 응용화학 Vol.2 No.2

A mathematical model was studied to predict flow rate, heat transfer and heat of combustion in rotary kiln incinerator. For the design of equipments and for the optimum operating conditions, it is necessary to understand the combustion status such as the transient temperature distribution and the degree of combustion. The objective of this study is to establish the combustion model that can be used for design and performance evaluation of incinerator. And also, numerical analysis to be able to understand heat transfer phenomena in the rotary kiln incinerator was performed in this study.

LNG 연소배가스중 이산화탄소와 질소산화물 저감을 위한 공정모사 연구

조욱상 수원대학교 산업기술연구소 2000 산업기술연구소논문집 Vol.15 No.-

In this paper, with relation to the preceding study, the computer modeling and simulation works for the LNG combustion process was performed to present the feasibility of the reduction of CO2 and NOX from the LNG flue gas. Suppose that the hydrogen gas produced from the partial oxidation of LNG and the CO2 reforming can be recycled to the boiler and decrease the flow rate of LNG and also the excess % of air, AspenPlusTM (commercial process simulator) equipped with the combustion database was used for the calculations. Concentrations of 18 combustion species and radicals expected in the flu gas have been calculated at equilibrium states. The relative feed flow rates and catalytic reactor parameters have been varied to search the optimal H2 yield and also to minimize the amount of undesired nitrogen compounds.

ECH 유도체와 수지성 폴리머를 함유한 Brine 폐수의 전처리를 위한 응집 및 침전 반응의 최적화 연구

조욱상 수원대학교 산업기술연구소 2005 산업기술연구소논문집 Vol.20 No.-

Epoxy resins are produced by the dehydro condensated reaction with ECH (Epichlorohydrin) and BPA(Bisphenoi-A) as raw reactants under sodium hydroxide(NaOH) as a catalyst, and from this reaction, salted water named of brine, which contains ECH derivatives in condition of emulsion as likely as glycidol and polymer resins, is produced as an undesired side product. This brire water is alkaline wastewater and causes process fouling problems by plugging and chemically depositing polymer particles on the surface of inner wall of reactors and pipes. and decreases the biodegradable efficiency in the wastewater process. In this study, the optimization of coagulation and sediment reactions, using inorganic and organic polymer coagulants, were performed to remove the causes occurring the process fouling phenomena. And also, based on this study, the methodologies applicable to the commercial processes including economical analysis were presented.