• 천문학회보
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• 제39권2호
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• pp.121.2-121.2
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• 2014

2013년 설립된 부산일과학고등학교 천문대는 교육 및 연구목적으로 12인치 굴절망원경, 16인치 반사망원경 및 다수의 소형망원경들이 설치되어 있다. 우리는 본격적인 관측, 연구를 수행하기에 앞서 망원경의 다양한 성능을 검증하여 향후 연구 활동에 기초자료로 사용하고자 한다. 본 연구에서는 망원경에 4K CCD 및 DSLR을 장착하여 얻은 관측 영상으로부터 망원경의 추적 특성, 지향정밀도, 광학적 특성을 고찰하고, Landolt (1992)의 표준성을 이용한 BV측광을 수행하여 표준계변환의 특성을 조사하였다. 또한 산개성단의 BV관측을 통해 한계등급을 측정하였다. 이 연구결과로부터 향후 부산일과학고등학교 천문대에서 수행할 수 있는 적합한 관측 연구의 방향을 제시한다.

• 천문학논총
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• 제32권1호
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• pp.97-99
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• 2017

Our understanding of dust emission, interaction, and evolution, is evolving. In recent years, electric dipole emission by spinning dust has been suggested to explain the anomalous microwave excess (AME), appearing between 10 and 90 Ghz. The observed frequencies suggest that spinning grains should be on the order of 10nm in size, hinting at polycyclic aromatic hydrocarbon molecules (PAHs). We present data from the AKARI/Infrared Camera (IRC) due to its high sensitivity to the PAH bands. By inspecting the IRC data for a few AME regions, we find a preliminary indication that regions well-fitted by a spinning-dust model have a higher $9{\mu}m$ than $18{\mu}m$ intensity vs. non-spinning-dust regions. Ongoing efforts to improve the analysis by using DustEM and including data from the AKARI Far Infrared Surveyor (FIS), IRAS, and Planck High Frequency Instrument (HFI) are described.

• Advances in Traditional Medicine
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• 제5권1호
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• pp.48-56
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• 2005

We studied the protective effect of Echinacea purpurea against radiation by evaluating changes in the peripheral blood cell count and peripheral blood antioxidant activity. Echinacea purpurea administration had a suppressive effect on radiation-induced leukopenia, especially on lymphocytes and monocytes and resulted in a faster recovery of blood cell counts. Mouse peripheral blood antioxidant activity was increased by Echinacea purpurea, and a relationship between the suppressive effect on radiation-induced leukopenia and the antioxidant effect was suggested.

• 한국광과학회:학술대회논문집
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• 한국광과학회 2005년도 제12회 학술대회 논문초록
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• pp.103-103
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• 2005

• 한국광과학회:학술대회논문집
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• 한국광과학회 2005년도 제12회 학술대회 논문초록
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• pp.137-137
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• 2005

• 한국과학교육학회지
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• 제17권4호
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• pp.405-413
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• 1997

High school common science is introduced by the sixth national curriculum. It consists of physics, chemistry, biology and earth science like the secondary school science. In this paper, textbooks are analyzed by the science teachers and the status of the present teaching and learning methods is reported. The detailed results are as follows; 1. Almost high school teachers choose textbook that included little the STS material. More than two teachers are teaching the high school common science and when they are chosen, they are independent with their major. 2. According to the national curriculum, they evaluated the textbooks as it is below the middle level. This evaluations are not dependent on teachers' comparement and textbook's class except the several matters based on STS (science-technology-society). 3. The teacher teaching the high school common science thought that teaching the textbook in school is worse than analysizing it. they must have emphasised on learning of inquire method than system of knowledge, introduction to material connected with real life and STS in the high school common science.

• 한국과학교육학회지
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• 제27권2호
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• pp.144-152
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• 2007

In this study, high school science teachers' and students' various conceptions related to osmosis phenomena were compared with and analyzed in relation to the content of science textbooks used in high school science classrooms and college science courses. The questionnaires developed by the researchers were administered to science teachers and students. Differences can be found between the explanations of science textbooks on osmotic pressure and semi-permeable membranes. Many science teachers and students thought of osmotic pressure as 'membrane pressure occurred by the movement of a solvent'. Moreover, the types of teachers of semi-permeable membranes were similar regardless of their academic majors. Many of the teachers thought of a semi-permeable membrane as a membrane that 'passes small-size particles'; however, many students thought of this type of membrane as being 'selectively permeable'. Also, the salt-pickling cabbage phenomenon seemed to cause significant confusion to science teachers and students. These study results show that teachers and students possess various conceptions related to the osmosis phenomena. These different conceptions related to osmosis phenomena might cause confusion and diverse conceptions including misconceptions among teachers and students.

• Molecules and Cells
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• 제38권11호
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• pp.991-997
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• 2015

Tristetraprolin (TTP) is an AU-rich elements (AREs)-binding protein, which regulates the decay of ARE-scontaining mRNAs such as proto-oncogenes, anti-apoptotic genes and immune regulatory genes. Despite the low expression of TTP in various human cancers, the mechanism involving suppressed expression of TTP is not fully understood. Here, we demonstrate that Resveratrol (3,5,4'-trihydroxystilbene, Res), a naturally occurring compound, induces glioma cell apoptosis through activation of tristetraprolin (TTP). Res increased TTP expression in U87MG human glioma cells. Res-induced TTP destabilized the urokinase plasminogen activator and urokinase plasminogen activator receptor mRNAs by binding to the ARE regions containing the 3' untranslated regions of their mRNAs. Furthermore, TTP induced by Res suppressed cell growth and induced apoptosis in the human glioma cells. Because of its regulation of TTP expression, these findings suggest that the bioactive dietary compound Res can be used as a novel anti-cancer agent for the treatment of human malignant gliomas.

• 한국초등과학교육학회지:초등과학교육
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• 제32권4호
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• pp.557-566
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• 2013

The purpose of this study was to investigate the effects of science lesson applying STEAM education on the science learning motivation and science academic achievement of elementary school students. The study subjects were four classes of the 5th grade of M elementary school in B Metropolitan City. Two classes including 64 students were experimental group and the others including 65 students were comparison group. For the purpose of study, the lesson unit 'The human body' were practised, the recomposed unit applying STEAM was applied to experimental group, whereas comparison group was taught traditional science lesson. The results of this study were as follows. First, the science lesson applying STEAM education influenced significantly the improvement of the science learning motivation of elementary school students. Second, the science lesson applying STEAM education influenced significantly the improvement of the science academic achievement of elementary school students.

• 한국과학교육학회지
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• 제5권2호
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• pp.89-97
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• 1985

The measurement tad of student's attitudes towards secondary school science had been developed according to the scheme of categories of science education object by Klopfer. Sixteen background factors of student had been chosen in order to find out a difference in student's attitudes towards secondary school science for each background factor. The twenty-eighth grade student's attitudes towards secondary school science in the Province of Chung Cheong Buk Do had been investigated by the developed tool. The findings were as follow: 1. On the whole the investigated students had favorable attitudes towards secondary school science. 2. The adoption of scientific attitudes and favorable attitudes towards science and scientists were the best affirmative attitudes. 3. The correlation between enjoyment of science learning experiences and development of interest in pursuing a career in science was the highest level. 4. The seven of sixteen background factors-sex, interest in science, science mark, location of residence, sat sifaction level at science learning, familiarity level with the name of scientific instruments and intended job-affected studentss attitudes towards secondary school science.