고등학교 지구과학Ⅱ 교과서의 ‘화성암의 조직’에 대한 내용 분석

고정선,윤성효,한종수 부산대학교 과학교육연구소 2007 교사교육연구 Vol.46 No.2

이 연구는 7차 고등학교 공통과학 교과서의 내용 중 화성암 암석의 조직 개념에 대한 본문진술과 제시된 그림 및 도표들을 분석하고 오개념 유발과 관련하여 문제점을 지적하고 그 개선방안을 모색하였다. 과학교과서의 개념진술이 정확하지 않아 학습자들에게 오개념을 유발하거나 재강화할 가능성이 있는 여러 진술문을 발견하였고 학생의 과학적 개념형성에 부적절한 그림이나 도표들도 발견되었다. 이들은 화성암 조직 분류체계의 기준의 혼란에 관련된 것들이다. 이들 개념진술을 대체할 개선방안들을 제시하였다. The purpose of this study is to analyze the seventh curriculum textbooks of high school Earth Science-II courses in relation to the igneous rock texture concept and find incorrect descriptions of that concept and then suggest some improved schemes. Some incorrect descriptions, pictures and tables on the igneous rock texture concept were found in texts. They might contribute to forming and/or reinforcing misconceptions about the confusion of criterion about the igneous rock texture. Therefore some improved schemes were suggested.

홍국 풀을 이용한 김치 제조 및 품질 특성

김현정,박정현,황보미향,이효주,이인선 한국조리과학회 2003 한국식품조리과학회지 Vol.19 No.6

Kimchi was prepared with the addition of 2.5% and 5.0% Monascus purpureus koji(MPK) paste (20%) and were fermented at 20C for 18 days. The quality and sensory characteristics of the kimchi were evaluated by analyzing the pH, acidity, number of viable cells, the concentration of reducing sugar, and sensory properties during fermentation. The pH and titratable acidity of the kimchi prepared with MPK(MPK kimchi) were higher and lower, respectively, than those of the control kimchi. The MPK kimchi showed high 'L' and 'b' values during storage, but the 'a' values were low. The contents of the reducing sugar of the MPK kimchi tended to increase during fermentation, particularly after six days. The number of total microbial cells, lactic acid bacteria and yeast in the MPK kimchi were lower than those of the control kimchi until 3 days of fermentation. However, the number of these bacteria in the MPK kimchi and the control kimchi after six days of fermentation was similar. The sensory score of the kimchi with 2.5% and 5.0% added MPK paste were significantly higher than the control groups in terms of the sweetness and overall acceptability.

제7차 교육과정의 과학교과서 지질단원에 대한 연계성 분석

윤성효,박기현,고정선 부산대학교 사범대학 과학교육연구소 2005 科學敎育硏究報 Vol.32 No.-

Using the task analysis technique, this study analyzes the contents of study and inquiry activities of geo-science units in twelve textbooks in total, which include eight elementary level textbooks from the third to sixth grades, three middle school level textbooks, one high school level science book. After choosing several main concepts, this paper analyzes the connection and hierarchy among them and presents the hierarchical structure as a diagram. The conclusions drawn from this study are as follows: First, from the analysis of studying content on geo-science unit, in the science education content from e third to tenth grades, the articulation of the major concepts, such as the inner part of the earth, rocks, plate tectonics, volcanic activities and earthquakes, layers and fossils, and gen-structure, are well associated with one another; on the other hand, unnecessary repetition and discontinuation appear in the mineral and gen-history sections. Overall, from simpler subjects, such as those related to the daily life, to the more complex scientific ones, the connection of contents is well maintained, which corresponds to the principle of organizing contents in the 7th curriculum. Second, the proportion of inquiry activities from analyzing inquiry content relating geo-science, is as follows: at the elementary school level, a total of thirty-one inquiry activities composed of observation (51.6%) and experiment (19.4%); at the middle school level, a total of twenty-seven inquiry activities consisted of data analysis (47.1%), experiment (25.9%) and observation (18.5%); at the high school level, these comprised data analysis (47.1%), discussion(17.6%), and follow-up (11.8%). Such findings show that while elementary schools focus on the observation of geological phenomena around us, middle schools on the data analysis, experiment, and observation, and high schools on particularly on the data analysis. Third, one of the important principles of the seventh curriculum is to compile textbooks in order to maintain the articulation between contents accordingly from the third grade to the tenth grade. The seventh curriculum emphasizes teaching and learning according to this code, and this paper presents the hierarchical structure as a diagram showing the flow among main learning points, It would contribute to improve instruction of science teachers in elementary, middle and high schools by helping to fully understand the hierarchical structure of the geo-science unit. therefore It will facilitates the application and settlement of the seventh curriculum.

소재 트랜드 테마별 직물의 역학적 특성 연구 : 2002/03 여성복 추동 시즌을 중심으로 2002/03 Fall & Winter season for women's wear

주정아,유효선 한국의류학회 2003 한국의류학회지 Vol.27 No.8

The purpose of this study was to clarify the different mechanical properties of fabrics among the theme groups classified by fashion fabric trend. This study can be useful for fabric marketers and planners to design new products. In order to carry out this study, the fabric samples of representative theme for '2002/03 F/W fashion fabric trend were collected from a fashion company and were measured to analyze the mechanical propertied, hand value(H.V) and total hand value(T.H.V) by KES-FB System. The results were as follows. 1. The theme-A of 'Luxury, Elegance' was consisted of wool, rayon and PET and had a lower B, 2HB of bending properties and a lower G and 2HG5 of shear properties. The theme-B of 'Technical, Functional' was consisted of synthetic fibers such as PET, PA, PU and elastic fiber and had a higher MIU and a lower MMD, SMD of surface properties. The theme-C of 'Vintage, Aged' was consisted of mostly cotton and had the highest B and 2HB. The theme-D of 'Fancy, Airy' was consisted of mostly woolen wool, polyacryl and polyamide and had a high MMD and SMD of surface properties and a high LC and RC of compression properties. 2. As the results of analyzing H.V and T.H.V through KES-FB system, the theme-A showed a higher Smoothness and lower stiffness. The theme-B had a lower Smoothness, Fullness, Soft feeling and T.H.V and the theme-C had the highes stiffness. The theme-D showed the highest Fullness and Soft Feeling but the lowest Stiffness.

부산 지역의 야외 지질 학습 자료 개발과 그 효과

장정일,고정선,윤성효 부산대학교 사범대학 과학교육연구소 2002 科學敎育硏究報 Vol.29 No.-

Learning materials for the field geological practices along the level-differentiated inquiry learning that considered learning ability of students were developed, and the effects of self-directed field geology program on the learning achievements and self-directed learning characteristics tried to examine. As for the field geological learning sites, the regions chosen Dadaepo and Songdo area in the southern part of Busan city, due to fresh outcrops and accessibility for the students. As for developed learning materials, it is considered to help in a learning achievements and self-directed learning ability.

호장근 추출물의 Helicobacter pylori에 대한 생육억제 및 인간 위암세포주에 대한 유전적 손상 유도

박정현,김현정,이지원,임효권,이인선 대한암예방학회 2003 Journal of cancer prevention Vol.8 No.2

부산시 고등학생들의 환경에 대한 인식정도와 영향요인 분석

최인영,윤성효,고정선 부산대학교 사범대학 과학교육연구소 2004 科學敎育硏究報 Vol.31 No.-

The purpose of this study was to identify the degree of recognition of the high school students about environmental and influential factors on it, selecting two regular schools and three vocational schools among the high schools in Busan area, questionnairing one class in the 10th, 11th, 12th grades of each school and analyzing the result. The result of analyzing the degree of knowledge, practice and recognition of seriousness concerning environment according to grade and gender is that the significant difference has been found in the degree of practice. The result of analyzing them according to maternal academic background is that the significant difference has been found in the degree of knowledge and a living standard and the style of housing have no effect on the environmental education, In the survey according to family style, it is shown that the students 'who live with their parents' recognize the seriousness of environment more. In the survey according to the experience of having the subject 'environment' in their school curriculum or not, it is shown that the significant difference has been found in the degree of knowledge. As the source of information on environment, mass media such as TV, magazines and newspapers have a great impact on the students. As the significant difference has been found in the degree of knowledge, practice, the recognition of seriousness from the viewpoint of the analysis on the survey according to the degree of the recognition on the necessity of the environmental preservation, it is shown that the more the students feel the necessity of environmental preservation, the higher the degree of knowledge, practice and recognition of seriousness on environment becomes, In the survey according to the kind of school, the significant difference has been found in the degree of knowledge, In the survey according to the degree of maternal concern on environment it is shown that the more concerns the mothers have, the more the students put what they learn into practice, In the survey according to the kinds of school, the significant difference has been found in the degree of knowledge. As the result of multiple regression analysis is summarized as below. 1. The variables influencing the environmental knowledge are the experience of having the class, 'environment', the recognition of the necessity of the environmental preservation and maternal academic background. 2. The elements influencing the degree of recognition of seriousness about environmental contamination are gender, the experience of having a class, 'environment' or not and the necessity of the environmental education. 3. The elements influencing the degree of practice are grade, information on environment, and maternal concern.

Inhibitory Effect of Cordycepin on Human Platelet Aggregation

박화진,--,--,--,--,--,-- THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCIEN 2004 Journal of biomedical laboratory sciences Vol.10 No.1

Cordycepin separated from Cordyceps militaris is a major physiologic active component in Cordyceps militaris. The platelet aggregation is stimulated by Ca^(2+), which is either mobilized from intracellular endoplasmic reticulum or transported from extracellular space. cGMP antagonizes the actions of Ca^(2+). Based on these facts, we have investigated the effects of cordycepin on the mobilization of Ca^(2+) and the production of cGMP on collagen (10 ㎍/ml)-induced human platelet aggregation. Cordycepin potently stimulated the human platelet aggregation induced by collagen (10 ㎍/ml) in a dose-dependent manner. Cordycepin (500 μM) inhibited also the collagen-induced human platelet aggregation in the presence both 1 mM and 2 mM of CaCl_(2). These are in accord with the results that cordycepin inhibited the Ca^(2+)-influx on collagen-induced human platelet aggregation. These results suggest that cordycepin decrease the intracellular Ca^(2+) concentration to inhibit collagen-induced human platelet aggregation. Besides, cordycepin increased the level of cGMP on collagen-induced human platelet aggregation. This result is related with the decrease of intracellular Ca^(2+) concentration, because cGMP inhibits the mobilization of Ca^(2+). In addition, cordycepin inhibited the human platelet aggregation induced by LY-83583, inhibitor of guanylate cyclase. This result suggested that cordycepin inhibit the platelet aggregation by stimulating the activity of guanylate cyclase. In conclusion, we demonstrated that cordycepin might have the antiplatelet function by inhibiting Ca^(2+)-mobilization via the stimulation of the production of cGMP.

Inhibitory Effect of Clavicepitaceae on Serotonin Release out of Human Platelets and Human Platelet Aggregation

박화진,--,--,--,--,--,-- THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCIEN 2004 Journal of biomedical laboratory sciences Vol.10 No.1

We have investigated the effects of hypha-water extracts (HWE), fruit body-water extracts (FWE) and cordycepin from Cordyceps militaris on serotonin release out of human platelets and human platelet aggregation. HWE and FWE inhibited the release of [^(3)H]-serotonin from human platelet stimulated by thrombin (2 U/ml) or collagen (20 ㎍/ml) in a dose-dependent manner. Furthermore, cordycepin, a major component of Cordyceps militaris, inhibited the human platelet aggregation induced by collagen (10 ㎍/ml) in a dose-dependent manner. These results suggest that cordycepin containing in HWE and FWE may inhibit the serotonin release by suppressing the collagen-induced human platelet aggregation. Accordingly, our data demonstrate that HWE and FWE containing much cordycepin might have antithrombotic and antimigrainous functions.

E. coli 과량발현을 통한 B형 간염 바이러스 preS1 유도체의 안정한 동위원소 N의 치환

박병관,김세하,한규훈,김선영,홍요정,이시형,한동설,김순종,박진구 木浦大學校基礎科學硏究所 1997 基礎科學硏究誌 Vol.15 No.-

We have used molecular biology technique to label the side chains and backbone of HBV preS1(1-56) with stable isotope (??) during E. coli over-expression and purified the protein to near homogeneity. The expression level of ?? labelled preS1(1-56) seems to be ∼15% of the total protein. to characterize the secondary structure of the labelled protein, circular dichroism was used. In different buffer conditions including pH 3.3 and pH 7.4 the protein seems to be devoid of any stable secondary structure probably suggesting that the N-terminal portion (preS1(1-56)) of HBV preS1 might be unstructured before binding to its target cells.