• 한국과학교육학회지
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• 제5권2호
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• pp.139-145
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• 1985

This study was undertaken to analyze the research trends on science education in Korea. In this study the analysis for of trends of researches on science education, nine areas such as historical change of science Education, Processes of science learning science curriculum, science instruction, teaching-learning materials and equipment for science education, valuation on science education, survey on Korean science education, policy and management of science education, and natural science, were chosen for the analysir. All science education. thesis and dissertations in Korea, papers of science education published by the science center of the Seoul National University and the papers of the Journal of the Korean Association of Res Search in science Education were analyzed. The findings of this study are as follows: 1. Seventy percentile of science educational thesis and dissertations are on natural science areas. 2. About 14% of all papers being sampled is in science curriculum research category. There are few research studies on historical changes of science education, and teaching-learning materials and equipments for science education.

• Journal of Microbiology and Biotechnology
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• 제26권10호
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• pp.1661-1667
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• 2016

The ginsenoside-hydrolyzing β-glucosidase gene (bgy2) was cloned from Lactobacillus brevis. We expressed this gene in Escherichia coli BL21(DE3), isolated the resulting protein, and then utilized the enzyme for the biotransformation of ginsenosides. The bgy2 gene contains 2,223 bp, and encodes a protein of 741 amino acids that is a member of glycosyl hydrolase family 3. β-Glucosidase (Bgy2) cleaved the outer glucose moieties of ginsenosides at the C-20 position, and the inner glucose at the C-3 position. Under optimal conditions (pH 7.0, 30℃), we used 0.1 mg/ml Bgy2 in 20 mM sodium phosphate buffer (PBS) for enzymatic studies. In these conditions, 1.0 mg/ml ginsenoside Rb1 and ginsenoside F2 were converted into 0.59 mg/ml ginsenoside Rd and 0.72mg/ml compound K, with molar conversion productivities of 69% and 91%, respectively. In pharmaceutical and commercial industries, this recombinant Bgy2 would be suitable for producting ginsenoside Rd and compound K.

• 한국콘텐츠학회논문지
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• 제13권11호
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• pp.1004-1013
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• 2013

본 연구는 자연재해 교육이 초등학교 저학년 통합학급 아동의 환경친화적 태도에 미치는 효과를 알아보고자 하였다. 이를 위하여 G광역시에 위치한 C초등학교 1학년 통합학급 2곳에 재학중인 일반아동 45명과 발달지체아동 2명을 선정하였다. 본 프로그램에 참여를 원하는 반을 실험집단, 다른 한 반은 비교집단으로 정하였다. 1학년 2학기에 총 18회기의 실험처치를 실시하였다. 자연재해 교육의 효과는 Musser와 Diamond가 제작한 CATES-PV를 기초로 허윤정이 수정 번안한 도구를 사용하여 측정하였다. 그 결과 자연재해 교육은 초등학교 저학년 통합학급 아동의 환경친화적 태도를 증진시키는데 효과적인 것으로 나타났다. 본 연구의 자연재해교육을 받은 아동들의 동식물 대한 애호와 관심, 생명에 대한 존중의식, 인공적인 환경 보다 자연환경에 대한 선호, 자연보호, 자원절약 등 현재 환경 관련 교육 이 목표로 하고 있는 능력, 태도가 증진되었다는 결과는 현재 우리나라 아동들을 위한 자연재해 교육에 대한 의미와 범위를 재고해 봐야할 필요성을 제시한다.

• Journal of Ginseng Research
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• 제41권4호
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• pp.540-547
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• 2017

Background: In general, after Panax ginseng is administered orally, intestinal microbes play a crucial role in its degradation and metabolization process. Studies on the metabolism of P. ginseng by microflora are important for obtaining a better understanding of their biological effects. Methods: In vitro biotransformation of P. ginseng extract by rat intestinal microflora was investigated at $37^{\circ}C$ for 24 h, and the simultaneous determination of the metabolites and metabolic profile of P. ginseng saponins by rat intestinal microflora was achieved using LC-MS/MS. Results: A total of seven ginsenosides were detected in the P. ginseng extract, including ginsenosides Rg1, Re, Rf, Rb1, Rc, Rb2, and Rd. In the transformed P. ginseng samples, considerable amounts of deglycosylated metabolite compound K and Rh1 were detected. In addition, minimal amounts of deglycosylated metabolites (ginsenosides Rg2, F1, F2, Rg3, and protopanaxatriol-type ginsenosides) and untransformed ginsenosides Re, Rg1, and Rd were detected at 24 h. The results indicated that the primary metabolites are compound K and Rh1, and the protopanaxadiol-type ginsenosides were more easily metabolized than protopanaxatriol-type ginsenosides. Conclusion: This is the first report of the identification and quantification of the metabolism and metabolic profile of P. ginseng extract in rat intestinal microflora using LC-MS/MS. The current study provided new insights for studying the metabolism and active metabolites of P. ginseng.

• 한국환경교육학회지:환경교육
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• 제12권1호
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• pp.225-241
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• 1999

The art subject deals with aesthetic experience within natural environment around and artificial environment, and it represents the experience through formative arts. And it also extends the aesthetic experience by making students appreciation of the works of art. In the main text of this study was studied with the connection with environmental education on the basis of the characteristics of art subject. That is, in the art education there can be an understanding of the harmony between natural environment and artificial one and their relationship and, furthermore, more positive environmental education can be possible by environmental murals, environmental sculpture, environmental design, packing design, poster design, elf through systematic formative arts. In addition, the art education can make students keep sensitivity to the natural and artificial environment through the appreciation of a variety of art works made with a theme of environment or through the appreciation of the works in the environment around our lives. Also, it can lead to acquire the desirable values and attitudes toward the environment by discussing the harmony of environmental development and environmental preservation visually. In the second place, this relation described in detail by each grade according to the contents of the 7th curriculum for the art subject. In the third place, the following were suggested: the goals for the environmental education in the art subject, the direction of environmental education, the organization of contents related to environment and their emphases, and the main teaching and learning methods for environmental education.

• 한국수학교육학회지시리즈A:수학교육
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• 제49권4호
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• pp.423-436
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• 2010

In this paper we discuss the Socratic method from the aspects of subject education and examine the meaning of the method in mathematics education that is the most suitable subject for the realization of the Socratic method. In addition, as a realization of the Socratic method, we conducted a teaching-learning experiment of complex natural exponential function with a 2nd year college student. The results of the experiment are analyzed with the intention of improving instruction of the complex analysis that is one of the college mathematics courses.

• 한국과학교육학회지
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• 제28권3호
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• pp.197-210
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• 2008

The purpose of this study is to explore the cases and features of the abductive inference used by young children when trying to explain natural phenomena in everyday life. From observing a 5-year-old's daily activities with his family, and analyzing the data according to the criterion extracted from the form of abductive inference described by C. S. Peirce, a few cases where the child used abductive inferences to explain natural phenomena were found. The abductive inferences in the cases were conducted: (a) based on figural resemblance and behavioral resemblance (b) under the influence by individual belief and communal belief, then (c) resulted in new categorization accompanied by over generalization. Such features of the abductive inference showed the 'double faces'; sometimes encourages and sometimes discourages children's generating better scientific hypotheses and explanations. These results suggest that even young children use abductive inference to explain doubtful natural phenomena in everyday life, although we need to consider carefully with the double aspects of the features of abductive inference for the practical applications to the fields of science education. Finally, several suggestions and following studies for science education are proposed.

• 공학교육연구
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• 제15권6호
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• pp.92-97
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• 2012

This paper deals with the model of natural sciences and engineering's convergence education. Recently, convergence education's necessary is needed since the most of new products are designed and produced based on the convergence technology. But our country's education system is keeping existing education process. This make industrial world undurable to employ the current graduated students. Also in view of educational world, they have no proper convergence education model for their students. In this paper, to solve the non-existing convergence education model, we derive the a few convergence education model and list up their model each. This result will be helpful for the introducer of the convergence education system.

• 과학교육연구지
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• 제35권2호
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• pp.149-158
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• 2011

본 연구의 목적은 비형식 과학교육기관인 자연사 박물관의 교육프로그램을 분석하여 과학 교육의 조력자로서 비형식 과학교육기관 교육프로그램의 교육적 역할을 제고하는 것이다. 따라서, 연구 대상 기관으로 공립 자연사박물관으로서 최근 6년간 가장 많은 수강생을 유치했으며 매년 60여 개의 다양한 프로그램을 운영하여 안정적으로 교육프로그램이 운영되고 있는 서울특별시 서대문구 소재의 서대문 자연사박물관을 선정하여 조사하였다. 국가수준 교육과정과 비교가 가능한 3~6학년 대상의 교육프로그램 교재 32권을 대상으로 하였다. 이 연구에 사용된 교육프로그램 내용 분석틀은 비형식 교육기관 중의 하나인 영재교육원에서 운영되는 교육프로그램의 지면 평가틀을 바탕으로 2007 개정 교육과정 과학과 목표와 관련된 과학 지식, 과학 탐구, 창의적 사고와 관련된 부분을 중심으로 하여 재구성하였으며, 과학교육 전문가 2인 및 현장 전문가 3인에게 검토 받아 수정 보완하여 최종안을 개발하였다. 1차 평가로 교재를 분석한 후, 2차 평가로는 서대문자연사박물관의 수업 중 표본을 추출해 촬영하여 수업 장면을 분석하였다. 그 후 1차 평가와 2차 평가의 결과를 비교하여 신뢰도를 검토하고 교재를 통한 프로그램 분석으로 인해 발생할 수 있는 연구의 제한점을 보완하였다. 연구 결과, 현재 비형식 과학교육기관에서 운영되는 교육프로그램의 교재에는 탐구 능력과 창의성을 증진시키기 위한 활동이나 발문이 많이 포함되지 않았다. 이러한 연구 결과로 볼 때, 비형식 과학교육기관 교육프로그램 개발 시 수업의 내실을 기하기 위해 활동 내용, 수업 방식, 발문 등이 포함된 프로그램 지도안이 개발될 필요가 있다. 또한 피드백 개선을 위한 중장기 프로그램 개발, 창의적 사고를 키울 수 있도록 창의 기법 등을 활용한 교재 개발 등이 필요하다.

• 한국환경과학회지
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• 제19권3호
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• pp.343-351
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• 2010

Since the effect of environmental education at class using textbooks or materials related to environment is limited, the importance of activities for field experience is getting increased day by day. Thereby, the education tends to change into the type of education providing students with direct environmental experience. Students attending the science high school have excellent aptitude and ability for science and will lead the development of science in the future. Now it is urgent to develop various experiential programs which are helpful for them to establish desirable values on environment. However, the field of environmental education that allows science high school students equipped with ample environmental knowledge to improve environment sensitivity and have proper environment awareness is quite restricted as of now. Natural exploration activities are the programs which provide science high school students having lack of chance for environmental education with good opportunities to contact nature and also play significant roles in arousing their interest in issues related with environment. Therefore, it is thought that they will let science high school students explore the natural features of Korea, understand the importance of preserving environment and ecosystem profoundly, and encourage environmental awareness and will of environmental practice. Thereupon, with the study subjects of 121 first and second graders at U Science High School, this article analyzed their recognition of the necessity for environmental education and environmental pollution problems before and after the natural exploration activities, and conducted a survey on their satisfaction after the natural exploration activities and analyzed it. The result of this research is as follows. First, it was shown that the natural exploration activities were effective to raise the science high school students' awareness of issues related with environmental pollution. Second, the natural exploration activities had effect upon enhancing the students' willingness of environmental practice. Third, there was statistically significant correlation between the science high school students' satisfaction with the natural exploration activities and their achievement in the science subject. Fourth, there also was a statistically non or weakness significant correlation between their satisfaction with the natural exploration activities and preference for the science subject. In particular, it was found that students preferring biology indicated higher satisfaction.