계면활성 (界面活性) 아미노싸이클리톨 유도체(誘導體)의 계면화학적 성질

이창섭,손주환 한국유화학회 1987 한국응용과학기술학회지 Vol.4 No.1

Plasma levels of liporoteins were observed in vegetarians and non-vegetarians in order to compare the values between the two groups with different dietary habits, and among different age groups. All 162 vegetarians and 95 non-vegetarians were selected for this study. In detail, male vegetarians subjects were devided into three groups according to their ages, 20's, 30's and 40's. And three control groups were also selected at matching basis. Two groups each were selected for female subjects in their 20's and 40's. All ten groups were adopted and the lipids levels were compared appropriately. Plasma pre-β-lioprotein levels of non-vegetarians were not significantly in all groups. And plama α-liporotein levels of non-vegetarians were higher than the ones for vegetarians as compared with male of 20's, male 30's female of 40's, and it was not significantly as compared with female of 20's. And plasma β-liporotein levels of vegetarians were significantly lower than the ones for non-vegetarians in all groups. Most of plasma liporotein levels measured were found to be lower in vegetarians and tended to be higher age proups of both vegetarians and non-vegetarians. Ans plasma α-lipoprotein levels which is known to be adversely related to atheroscherosis were higher in non-vegetarians, it can be concluded in this study that the plasma lipoprotein levels of non-vegetarians under Korean dietary patterns are quite acceptable.

수종의 유치 수복재료의 세포독성에 관한 실험적 연구

이창섭,박주철,임광호 朝鮮大學校 口腔生物學硏究所 1999 Oral Biology Research (Oral Biol Res) Vol.23 No.2

The purpose of this study was to compare the cytotoxicity of deciduous teeth restorative materials - dental amalgam, composite resin, glass-ionomer cement, and stainless-steel preformed crown - on fibroblasts cultivated form human child ginagiva. Cell numbers were counted and cell morphology was observed on the 2en, 4th, and 6thexperimental days. And viable cell count was performed to evaluation the short-term cytotoxicity. The obtained results were as follows. 1. In the cell morphology observation, viable cell nember of amalgam and composite resin group decreased and showed distropic shape on the 2nd and 4th dsys 2. Amalgam and composite resin group showed cytotoxicity compared to the control and preformed crown goup on the 2nd and 4th days, ranks ordered the relative cytotoxicity of the test materials, as follows ; amalgam, composite resin, G-I cement, S-S preformed crown, and control group 3. Amalgam and composite resin group more cytotoxicity than control goup on the 2nd and 4th days, but it was reduced and showd viable rate as 92.25%, 92.67% on the 6th days.

민감도법을 이용한 크리깅모델의 순차적 실험계획

이창섭,이태희,정재준,황인교 대한기계학회 2004 大韓機械學會論文集A Vol.28 No.11

고등학교 체육수업의 재미거리와 걱정거리에 대한 연구

이창섭,남상우 忠南大學校體育科學硏究所 2001 體育科學硏究誌 Vol.19 No.1

The purpose of this study was two-fold : (1)to search the level of the enjoyment and worry in PE class perceived by high school students and (2)to analyze the sources of the enjoyment and worry in PE class. Specifically. First, this study was performed to find out the differences between boys and girls or among the grades in high school in the level of the enjoyment and worry in PE class. Second, it was also performed to search the differences between boys and girls or among the grades about preferred sources of enjoyment and worry by high school students in PE class. A grade-gender stratified quota sample was used to select 1,200 high school students from eight high school in each grade category in Daejon. Those students answered questions from Physical education Class Enjoyment Source Questionnaire(PCESQ) and Physical education Class Worry Source Questionnaire(PCWSQ) developed by Lee & Nam(2001). To analyze collected data, a Chi-square test, an independent t-test, and One-way Analysis of Variance(ANOVA) were performed. The major findings of this study were as follows; 1. With regards to the level of enjoyment and worry in PE class, boys showed higher level of enjoyment and lower level of worry than girls. This is thought to be because more boys prefer the PE class than girls. 2. The level of enjoyment and worry in PE class was significantly different between boys and girls in high school; boys felt more fun and less worry about PE class than girls. 3. With regards to the enjoyment source of PE class, boys and girls have tendency to recognize PE class as a tool for maintaining their health, a useful method to develop sociality, and subject requiring less efforts on cognitive domain. The results of worry source suggested physical educators have some problems related to stressful events that were indicated by both boys and girls, such as unsatisfactory class events, annoying preparatory proceedings before starting class, trouble with friends during class, and displeasure about teacher's teaching method. 4. With regards to the enjoyment source of PE class by grades, the result that boys differently recognized PE class as a factor supporting their health by grades was apparent and boys in third grade accepted that social skills could be developed by participating in PE class. Otherwise, the aspect that girls' systematical development of cognitive content performed in-class was important was thought to be result of the fact that the most favorable enjoyment source for girls is less effort on cognitive domain of physical education than other subjects. 5. with regards to the perception of worry source in PE class by grades, the finding were that students perceived dissatisfaction with the events of PE class in the first and third grades and dissatisfaction with the events of PE class in the second grade as the most stressful aspect of PE class. This is thought to be the result of the fact that teachers should consider managing the conditions of the students and improving environment of the class in PE class.

양산단층에서의열수변질작용

이창섭 한국암석학회 2008 한국암석학회 학술발표회 논문집 Vol.- No.-

백록담에 분포하는 한라산조면암의 풍화특성

이창섭,이상배,조태진 한국암반공학회 2007 한국암반공학회 학술대회 및 세미나 자료집 Vol.- No.-

대학생의 정치적 태도에 관한 연구

이창섭,이종호,김헌 충남대학교 체육과학연구소 2000 體育科學硏究誌 Vol.18 No.1

The purpose of this study was to analyze and compare three individual facets of political attitudes by a university student classification and gender, exercise experiences. The subjects were 402 university students randomly chosen from various student classifications 165 students were among physical education department and 237 among general department students. For the purpose of this study, this study used a survey instrument modified by the researcher and based on the various variables identified in an extensive review of related literature. The survey instrument contains three factors; political orientation, political participation and political interest. An independent samples t-test was used to analyze the col1ected data. The results revealed that significant differences were found between the perception of the two types of students on the dimensions political interest : (1) Regarding the comparison of political orientation between university student classification, physical education students showed slightly more progressive than the other university student group ; (2) Pertaining to the comparison of political participation and political interest between university student groups, physical education students showed higher than the other group. According to gender, significant differences were existed in the two factors, political orientation and political participation. No significant differences was existed between athletes and non-athletes in the three facets of political attitudes.

계면활성 (界面活性) 아미노싸이클리톨 유도체(誘導體)의 합성

이창섭,손주환 한국유화학회 1987 한국응용과학기술학회지 Vol.4 No.1

Surface chemical properties including surface tension, Ross-Miles foaming power, foam stabilities, emulsifying properties, emulsion stabilities, effectiveness of dispersion, dispersion stabilites of the quaternary ammonium salt type deoxyaminoimositol derivatives such as sixteen kinds of dimethylafkyl-deoxyscyllo-inosityl- diemethylalkyl-2-deoxy-2-myo-inosityl, dimethylakyl-2-deoxy-2-epl-inosityl and dimethylalkyl-4-deoxy-4-myo-inosity1 ammonium chlorides are tested. And critical micelle concentration of these compounds are estimated from the curves of surface tension and concentration. The experimental results show that the members of this class of compounds have necessary surface active properties to make them effective surfactants.

화석연료중 산소포함 헤테로고리화합물의 분해제거를 위한 HDO촉매의 특성 및 촉매반응 연구

이창섭,박종보,최정우,이경희 한국자동차공학회 1996 한국자동차공학회 학술강연초록집 Vol.1996 No.10

Mo 단결절 표면에 황을 흡착시켜 형성된 상충구조를 AES와 LEED로써 연구하였다. 황의피복률은 sulfur gun으로부터 생성되는 S₂flux로써 조절하였으며, 여러 가지 흡착된 황의 상층구조를 LEED에 의해 관찰하였다.황하된Mo 표면에서 탈산소반응(HDO)의 모델 분자로서,Futan의 흡착과 반응을 승온반응분광법(TPRS)으로 조사하였다. 낮은 온도에서 Furan분자의 혜테로 원자는 직접 이탈하여 안정한 기체상의 반응 생성물인 일상화탄소를 향성하였으며, 이 반응은 Mo의 (100) 및 (110) 면에서 각각 깨끗한 표면 및 황화된 표면에 관계없이 일어났다. 이를 바탕으로 Mo 표면에서Furan의 분해반응에 대한 메카니즘을 제안하였다. 또한??-Alumina를 담체로한 분망상의 촉매를 제조하여 촉매의 표면특성을 조사하였으며, Furan분자를 흡착시켜 흡착구조 및 온도에 따른 분해반응을 연구하였다.

海洋汚染 規制와 防除

이창섭 대한조선학회 1991 大韓造船學會誌 Vol.28 No.1