미세결정성 셀룰로오스에 Trichoderma viride 셀룰라아제의 흡착거동

오제직,이혜옥 공주대학교 사범대학 과학교육연구소 1992 과학교육연구 Vol.23 No.1

표면적의 크기가 다른 미세결정성 셀룰로오스에 대한 Trichoderma viride cellulase의 흡착특성을 알아보았다. 셀룰로오스에 대한 셀룰라아제의 최적츱착 pH는 4.8이었다. 셀룰라아제의 흡착은 5℃ 또는 그보다 낮은 온도에서 가장 높았으며, 반응온도가 높아짐에 따라 흡착량이 감소하였다. 그러나 고유흡착량은(흡악된 효소활성/mg 단백질) 셀룰로오스의 최적 가수분해 조건인 5℃ 그리고 pH 4.8에서 가장 높았다. 셀룰로오스에 대한 셀룰라아제의 흡착은 랭뮤어 등온식에 따라 흡착을 하였다. 셀룰로오스의 표면적이 커짐이 따라 최대흡적량(Amax)이 증가하였고, 온도가 높아짐에 따라 최대흡착량(Amax)과 흡착상수(K)의 값이 감소하였다. 셀룰로오스에 대한 셀룰라아제의 흡착 열역학적파라미터는 흡착상수로부터 계산하였다. 셀룰로오스에 대한 셀룰라아제의 흡착시, 큰 음의 흡착 자유에너지의 값을 가졌고, 이로부터 흡착은 자발적으로 진행됨을 알 수 있었다. 이 흡착반응은 발열반응이고, 엔탈피지배반응이다. The adsorption behaviors of cellulase components of Trichoderma viride on microcrystalline cellulose with different surface area were studied. The optimum pH of adsorption of cellulase components on microcrystalline cellulose exhibited at 4.8. The adsorption of cellulase components was highest at temperature of 5℃ or lower and decreased with increasing the temperature. But, specific adsorption of cellulase components, activity adsorbed/mg protein, was found to be maximum at the optimal hydrolysis conditions of 50℃ and pH 4.8. The adsorption of cellulase components on microcrystalline cellulose obeys the Langmuir absorption isotherm. There was an increase in maximum adsorption amount(Amax) as the surface area of microcrystalline cellulose is increased. The value of maximum adsorption amount(Amax) and adsorption equilibrium constant(K) decreased with increasing the temperature. Thermodynamic parameters in adsorption were calculated from the adsorption equilibrium constant. It was found that from the large negative value of the free energy changes of the adsorption of cellulase components on microcrystalline cellulose can take place spontaneously. The adsorption process was exothermic and adsorption enthalpy controlled reaction.

중학교 3학년 과학교과서 내용의 비교 연구

오제직,임갑수 공주대학교 사범대학 과학교육연구소 1992 과학교육연구 Vol.23 No.1

The contents of five different science textbooks presently in use and the older science textbook(published before 1987) were selected and analyzed. More active reforms in science textbooks are necessary for future revision to fit the needs of science education in the 21st century. The results of this study can be summarized as follows: 1. There was little difference in the quantity of materials among five kinds of science textbooks now in use. 2. Science textbooks now in use had more pages, reading, nd Gothic-type terms than old science textbook. 3. Science textbooks now in use have less figures and tables than old science textbook. 4. Each of the science textbooks now in use had so many common parts that its contents were almost the same. 5. It was found that some terms used in the five kinds of science textbooks now in use were not unified. 6. It was found that some of the materials in five kinds of science textbooks now in use varied in thier contents.

??-Myristoyl-L-Cysteine에 의한 p-Nitrophenyl Acetate의 가수분해에 관한 연구

吳濟直,洪春杓 공주대학교 사범대학 과학교육연구소 1986 과학교육연구 Vol.18 No.1

The hydrolysis of p-nitrophenyl acetate has been studied aquous buffer solution in the presence of mixed micelles. The pseudo-first-order rate constant for PNPA has been calculated in the presence ??-myristoyl-L-cysteine varied concentration, ??, ??, ?? and ?? and its were ??, ??, ?? and ??. A remarkably large raate enchancement in the hydrolysis of PNPA was obs-erved in the mixed micelles. The recond-order rate constants were calculated each 1.2×10², 4.1×10², 8.0×10²and 8.3×10²at PH 5.0, 6.0, 7.2 and 8.0.

휴대용 계산기에 의한 착물의 안정도상수의 계산

윤세중,오제직,박병빈,박성록 공주대학교 사범대학 과학교육연구소 1980 과학교육연구 Vol.12 No.1

A Pocket calcultor program(Texas Instruments TI58 or TI59) was constructed for evaluation of the Successive stability constants of Nikel-glycine complex. This program conld be used for many other systems having similar eguhibrium scheme and experimental method. TI59, this program could be extended to the calculation of ionic strength correction and high n Complexes.

中學校 科學 敎科書의 比較分析 : 中學校 Ⅱ學年 科學 敎科書를 中心으로

洪春杓,吳濟植,金鎭彦 공주대학교 사범대학 과학교육연구소 1990 과학교육연구 Vol.22 No.1

Recently science curriculum in middle school was reformed the fifth and the science textbook of middle school is five species. In order to prompte educational effect, this study compared and analyzed five kinds of new science textbook with an old science textbook of the second year in middle school The results of this study can be summarized as follows. 1) Reformed five kinds of science textbook have various contents by participating 50 authors 2) Reformed science textbook increased 10 pages more than old science textbook of middle school in quantity. 3) It was found out that the numbers of the "Study and Observation" and "Exercises and Questions" in new science textbooks increased. 4) The numbers of Pictures were unchanged and the numbers of Tables. Experiments, Exercises and Composite Questions were decreased. 5) The 38∼42% was appeared the ratio of Experiments, Tables, Pictures, and Goethic type Terms in more than three kinds of science textbooks. 6) New science textbooks were reflected 61∼75% of an old science textbooks in Pictures, Goethic type Terms, Tables, and Experiments. As these results Terms and Contents reprented by Goethic type in science textbook should be selected carefully in order to prompte educational effect. The selection of Exercises, Composite Questions, Experiments and Observations should be allocated equally to each unit and behavior area. And this study suggests that there should be introduced experiments of an environment pollusion and its influence into a science textbook.

경주지역 여고생의 초경과 체성장간의 관계

김준섭,권오구,박진석,오종수,박정현,박제식,안세한,이용환,서정호,신태섭,최영배,김덕수,이관,박수경 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

본 연구는 경주지역 1개 고등학교 3학년 여고생을 대상으로 초경 시작 전인 초등학교 4학년부터 고등학교 2학년까지의 키, 몸무게, 가슴둘레 수치와 초경 연령을 파악하여 여성의 초경이 빠를수록 체성장 속도의 변화가 있을 것이라는 가설을 기초로 두 요인간의 관련성을 파악하고자 시행되었다. 경주시 1개 여자고등학교 3학년생 총 317명에 대해 ㅊ경 나이, 초경시 심리 상태, 초경이 시작되었을 때의 상담 여부와 상담하였던 사람, 부모 신장과 초경전후의 식사 규칙성, 다이어트 경험, 수면시간, 스트레스, 음주/흡연 여부, 질병력 등에 대한 설문 조사를 시행하였고, 초등학교 4학년부터 고등학교 2학년까지의 키, 몸무게, 가슴둘레에 대한 정보는 건강기록부에서 확보하였다. 상기 대상자 중 건강기록부가 분실된 39명, 초경나이에 대해 응답하지 않았던 29명 및 결석 등으로 조사를 하지 못하였던 42명을 제외한 조사 대상자는 206명으로 선정하였다. 대상자들의 초경연령 평균값(Mean±SD)은 13.0±1.11이었고, 초등학교 4학년부터 고등학교 2학년까지의 초경 이후 신장 성장률은 감소하였으며, 초경연령이 빠른 군이 초등학교 때는 신장에 있어서 우위를 차지하나 고등학교에 오면서 신장은 비슷한 수준이 되었다. 초경후 1-2년 사이에 체중과 흉위의 증가율은 감소하였고, 초경연령이 빠른 군이 초등학교와 고등학교 사이에 체중과 흉위에서 모두 우위를 차지하였다. 본 연구의 결과는, 흔히 이차 성징의 시작 시점 혹은 사춘기의 시작 시점으로 보고있는 초경 연령이 청소년기의 성장과 밀접한 관련성이 있고, 특히 체중과 흉위의 성장 속도와 밀접한 관련성이 있음을 시사한다. To understand the onset of menarche in relation to changes in physical growth that take place during female adolescence, especially the changes in height and weight velocity. The 207 senior in one women high school of Kyongju were investigated in April 3 to 8, 2001. We collected the information, relation in the age at menarche, height & weight of parents, regularity of eating, and obesity diet, duration of sleeping, sickness & stress near age at menarche, by self-recording. The status of height, weight & chest circumference between the 4th grade of primary school and the junior of high school was collected by individual Health Record. The results were followed; The average age at menarche was 12.95±1.11 years old and the most frequent age of menarche is 13 years. After menarche, the velocity of height, weight and chest circumference were decreased. The most rapid group of menarche hold dominant position in height during elementary school. As time passed, they dont hold dominant position in height. The most rapid group of menarche get an advantage in the weight and the girth of chest after elementary school. The height of subjects is directly proportional to the height of their parents. These results suggest that the starting age at menestuation can be closely associated with physical growth and development.

Poster Session : Model Organisms and Disease ; Fxpression of the secretory Leukocyte protease inhibitor (SLPI) during mouse odontoblast Differentiation

( Je O Jeong ),( Myung Hwa Lee ),( Soon Jeong Jeong ),( Baik Dong Choi ),( Guan Lin Wang ),( A Rom Lee ),( Hee Jong Shin ),( Joo Cheol Park ),( Heung Joong Kim ),( Seung Pyo Chae ),( Moon Jin Jeong ) 한국생화학분자생물학회 (구 한국생화학회) 2007 생화학분자생물학회 춘계학술발표논문집 Vol.2007 No.-

Design and Implementation of Beauty Factory System based on Korean-wave Influencer

Je-O Song,Hun-Jin Lim,Jin-Seok Han,Hyoung-Rak Choi,Yeon-Woo Kim,Jae-Soo Yoo 한국콘텐츠학회 2017 한국콘텐츠학회 ICCC 논문집 Vol.2017 No.12

A Customer Response System using BLE beacon for Restaurant

Je-O Song,Jin-Gwan Kwon,Eun-Young Park,Jae-Soo Yoo 한국콘텐츠학회 2018 한국콘텐츠학회 ICCC 논문집 Vol.2018 No.12

A service of cosmetics recommendation for individual using beauty-bigdata

Je-O Song,Jung-Hyun Cho,Do-Jin Choi,Jae-Soo Yoo 한국콘텐츠학회 2017 한국콘텐츠학회 ICCC 논문집 Vol.2017 No.12