소각 촉매의 재생에 관한 연구

이태정,김기석 한국화학공학회 1995 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.33 No.5

산업용 소각로 촉매의 재생에 있어서 재생에 의한 촉매 특성의 변화와 소각 반응에 대한 활성 회복 정도를 연구하였다. 소각 촉매는 cordierite 담체상에 백금이 분산 담지된 것으로서 촉매의 비활성화는 오염물질과 유황성분 불순물의 침적 때문이었다. 알칼리 용액에서 세척 후 산 용액에서 중화에 의한 ex-situ, 액상 분위기하에서의 재생 처리에 의해서 표면 침적물인 오염물질과 유황성분이 제거되었으나 담체 세공 구조의 변화가 관찰되었다. CO 산화 반응으로 측정된 재생 촉매의 활성은 재생 처리 조건에 의해서 영향을 받았으며 알칼리 용액의 농도와 온도가 높을수록, 그리고 세척 시간이 길수록 재생 촉매의 활성이 높았다. Regeneration of an industrial incineration catalyst was studied with respect to the changes in catalyst characteristics and the recovery of incineration activity. The incineration catalyst was characterized as platinum dispersed on cordierite support, and catalyst deactivation was due to the deposition of foulants as well as sulfur impurities. The ex-situ, liquid-environment regeneration procedures consisting of cleaning in alkaline solution followed by neutralization in acid solution resulted in not only removal of foulants and sulfur species from the deactivated catalyst, but alteration of pore structure of the catalyst support. The activity of regenerated catalyst, measured by means of CO oxidation reaction, depended on the regeneration conditions. The increases in concentration and temperature of alkaline cleaning solution as well as cleaning time brought about the increase in the incineration activity of regenerated catalyst.

통계지표로 본 1997년 외환금융위기 이후 한국사회의 구조변화

이태정 한국경제연구원 2015 한국경제연구원 세미나자료 Vol.15 No.15

수원시 정자동 지역의 악취원인물질의 규명

이태정,전준민,김동술 한국대기환경학회 2007 한국대기환경학회 학술대회논문집 Vol.- No.-

完全한 porcelain margin을 형성하는 簡單한 방법에 대해서

李泰姃 대한치과기공학회 1980 대한치과기공학회지 Vol.2 No.2

목판화 외 1편

이태정 고요아침 2021 시조시학 Vol.78 No.-

일부(一部) 대도시(大都市) 지역(地域) 치과기공사(齒科機工士)의 직업(職業) 및 직업장(職業場) 만족도(滿足度)에 관한 조사연구(調査硏究)

이태정,이명곤,Lee, Tea-Jung,Lee, Myung-Kon 대한치과기공학회 1985 대한치과기공학회지 Vol.7 No.1

This study has been to survey the present situation of satisfaction to the occupation and dental laboratory by means of selscting 200 dental technicians who are woked in Pusan, Deagu, Kwangju, Deajun. Questionaires were distributed to them and the summerized results were as follows; 1. In general, the dental technician's satisfaction of the occpation was revealed as moderate(Mn, 2.83), the dental technician's satisfaction of the laboratory was revealas moderate(Mn, 2.80). The highest degree item out of the satisfaction of occpation was the outlook(Mn, 3.23), and the lowest degree item was the advancement and the rise to a high position(Mn, 2.22). The highest degree item out of the satisfaction of laboratory was dental material(Mn, 3.07), and the lowest degree item was the equipment of dust collection(Mn, 2.49) 2. By age, the highest degree item out of the satisfaction of occpation was 30 to 43 group(Mn, 3.28), 50 and over group was the lowest degree item(Mn, 2.89). The highest degree item out of the satisfaction of laboratory was 40 to 50 group(Mn, 3.10), the lowest degree item was 35 to 39 group(Mn, 2.88). 3. By school career, the satisfaction of occpation and dental laboratory were higher in the graduated college group than the graduated highschool group. 4. By personal health state, the highest degree item of the satisfaction of occpation was the health group(Mn, 3.25). The highest degree item of the satisfaction of laboratory was the unhealthy group(Mn, 3.07). 5. By religion, the satisfaction if iccupation of laboratory ws higher in the religious group than the non-religious group. 6. By job career, the highest degree item of occupation satisfaction was 15 to 20 years group(Mn, 3.27), the lowest degree item was 20 and over group(Mn, 3.02). The highest degree item out of the satisfaction of laboratory was 15 to 20 years group(Mn, 3.05), The lowest degree item was 7 to 10 years group (Mn, 2.90). 7. By job position, the highest degree item out of satisfaction of occupation was the chief of laboratory group(Mn, 3.33), the head of laboratory group was the lowest degree item(Mn, 3.07). The hightest degree item out of the satisfaction of laboratory was the head of laboratory group(Mn, 3.10), the lowest degree item was the chief of laboratory group(Mn, 2.88). 8. By the place of employment, the degree of occpational satisfaction by items was found that the highest degree in the group engagel in general hospital(Mm, 3.43), the group engaged in dental clinic and hospital(Mn. 3.24), and the dental laboratory group(Mn. 3.14) in order. The difference among the group was significant emough(P<0.05). The highest degree item out of the satisfaction of laboratory was dental laboratory group(Mn. 2.70). The difference among the group was significant emough(P<0.01). 9. By monthly salary, the highest degree item out of the satisfaction of occupation was ￦500,000 to 600,000 group(Mn. 3.32), the lowest degree item was ￦600,000 and over group(Mn, 3.07). The highest degree item out of the laboratory satisfaction was ￦100,000 to 200,000 group(Mn, 3.03), the lowest degree group was ￦300,000 to 400,000 group(Mn, 2.95). 10. As compared with the degree of satisfaction according to job satisfaction, the highest degree item out of the occupational satisfaction was much satisfied group(Mn, 3.65), the lowest degree item was non-satisfied group(Mn, 2.68). The difference among the group was significant enough(P<0.05). The highest degree item out of the satisfaction of laboratory was non-satisfied group(Mn, 30.9), the lowest degree item was satisfied group(Mn, 2.84). The difference among the group was significant enough(P<0.01).

금속주조 수복물의 적합성 향상에 관한 연구 (Wax patten 형성에서 매몰까지)

이태정,Lee, Tea-Jung 대한치과기공학회 1988 대한치과기공학회지 Vol.10 No.1

A good material selection and high dental techniques shall be required in all procedure from waxing up to investing of wax patten in order to get a cast restoration with good adaptability. Generally, wax and investing material should not have any deformation property but they art not so perfact in practice. Therefore, as the one of methods to produce more perfact, less deformation property and excellent product, it is necessary to eliminate the problems which can cause a deformation in each procedure.

수원지역의 대기 중 Pb의 농도 결정

이태정,김성천,김동술 한국환경과학회 1995 한국환경과학회지 Vol.4 No.5

Monitoring of lead concentration in the ambient air was performed in Kyung Hee University-Suwon Campus over a period of 5 year from November 1989 to September 1994 using a cascade impactor having 9 size stages. Lead level was analyzed by x-ray fluorescence. The lead levels have been extensively examined to identify annual trends, seasonal variations, and size distribution of lead concentration. Even though consumption of leaded gasoline has been decreased, the levels have not significantly changed during the sampling period. Probably other sources like fossil fuel emission and refuse incinerator will be potential contributors. The seasonal variation showed that Pb concentration significantly increased in the winter season and decreased in the summer season. The size distributions of Pb were observed to be unimodal distribution of the 1.1∼2.1 μm size ranges in the winter and 0.65∼1.1 μm in the summer.

전문대학 세무회계 관련학과 동향분석

이태정 한국세무회계학회 2004 세무회계연구 Vol.15 No.-

한국의 전문대학은 경쟁력 악화로 인해 재정위기를 포함하여 운영 전반에 걸친 위기를 맞고있다. 위기의 외면적인 원인은 자연 인구의 감소로 인한 입학자원의 감소를 들 수 있으며, 이러한 현상은 계속 심화될 것으로 전망된다. 이와 동시에 사회 전체의 구조적인 변화도 위기의 한 축으로 작용하고 있는바, 산업 구조의 개편, 직업 세계와 가치관의 변화, 교육 철학 및 정책의 부재 등이 중요한 원인이 된다. 대학설립준칙주의가 1996년에 도입되어 4년제 대학이 우후죽순처럼 설립되고 학생정원이 동시에 증가하게 되었고, 출산을 감소로 인한 입학자원의 절대감소와 맞물려 대학은 입학정원을 채우지 못하는 상황에 직면하게 되었다. 위기를 타개하기 위해 세무회계 관련 학과들이 학과명칭 변경과 교육과정 개편을 통해 유사학과로의 변신을 도모하였는바, 본 연구는 이러한 노력의 효과를 검증해보고자 하였다. 분석의 결과 다양한 학과 명칭 변경과 계열화 등의 노력에도 불구하고 신입생 모집에 큰 도움이 되지는 못하였다.

인중과 상ㆍ하악 치아의 중심선 관계에 대한 조사연구

李泰政 대한치과기공학회 1984 대한치과기공학회지 Vol.6 No.1