• Korean Journal of Environmental Agriculture
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• v.40 no.1
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• pp.40-48
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• 2021

BACKGROUND: Although the calcined oyster shell can be used as a calcium-rich adsorbent for phosphate removal, information about it is limited. The purpose of this study was to evaluate the phosphate adsorption characteristics and its mechanism using calcined oyster shells. METHODS AND RESULTS: In this study, calcined oyster shell (C-OS600) was prepared by calcining oyster shells (P-OS) at 600℃ for 20 min. Phosphate adsorption by C-OS600 was performed under various environmental conditions. Phosphate adsorption by C-OS600 occurred rapidly at the beginning of the reaction, and the time to reach equilibrium was less than 1 h. The optimal isotherm and kinetic models for predicting the adsorption of phosphate by C-OS600 were the Langmuir isotherm and pseudo-second order kinetic model, respectively, and the maximum adsorption capacity derived from the Langmuir isotherm was 68.0 mg/g. The adsorption properties of phosphate by C-OS600 were dominantly influenced by the initial pH and C-OS600 dose. In addition, SEM-EDS and FTIR analysis clearly showed a difference in C-OS600 before and after phosphate adsorption, which proved that phosphate was adsorbed on the surface of C-OS600. CONCLUSION: Overall, the calcined oyster shell can be considered as an useful and effective adsorbent to treat wastewater containing phosphate.

• Journal of Science Education
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• v.36 no.2
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• pp.186-197
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• 2012

The proliferation of bioinformatics in modern biology marks a modern revolution in science that promises to influence science education at all levels. This study analyzed the contents of standards in the 7th and 2007 and 2009 revised high school biology curricula and compared the contents, amount and the presentation styles of bioinformatics with those of biotechnology in biology textbooks. In result, first of all, there are some vague expressions about biotechnology and bioinformatics in the 7th and 2007 revised curriculum. There is a clear expression about biotechnology in 'life science I' and 'advanced biology' of 2009 revised curriculum. Second, more biotechnology is introduced than bioinformatics in 'science', 'biology I', 'biology II', 'life science I' textbooks. Third, in 'biology for high class' textbook, amount of biotechnology contents in the 2007 revised curriculum didn't increase. An more effort to introduce bioinformatics to science high school student is needed according to revising curricula.

• Microbiology and Biotechnology Letters
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• v.25 no.4
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• pp.374-378
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• 1997

Glutathione S-transferase (GST) was purified from Pseudomonas sp. DJ77, and its N-terminal sequence was determined to be MKLFISPGACSL. A specific tyrosyl residue in the vicinity of the N terminus is conserved in all the known cytosolic GSTs and has been shown to function as a catalytic residue in $\alpha$, $\mu$, $\pi$ class GSTs from mammals. However, Pseudomonas sp. DJ77 GST has the Phe-4 and Ile-5 instead of Tyr in N-terminus. Its replacement with tyrosine did not significantly affect the enzyme activity. Results from in vitro biochemical analyses were confirmed by the in vivo activity-based CDNB growth inhibition analyses. Our results clearly indicate that GST of Pseudomonas sp. DJ77 has a novel reaction mechanism different from that of mammalian GSTs.

• Proceedings of the Korean Society of Crop Science Conference
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• 2022.04a
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• pp.143-143
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• 2022

• Journal of Christian Education in Korea
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• v.67
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• pp.339-375
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• 2021

The author considers that contemporary society has entered the era of 'life on earth in peril' as a very serious situation in comparison with the past, and assumes that this life-in-peril situation, known as 'life crisis,' is one of the most urgent and important issues in Christian education as well as in public education. This urgency and importance is mainly based on the belief that Christianity is the religion of life that values all living beings' life and all Christians have the sacred vocation to cope with this crisis of life on earth, given by the life-giving God. For this reason, this study aims at identifying some tasks that Christian education should perform in the era of imperiled life, premising that diverse life-threatening situations and circumstances in today's world are closely related to the Christian Sabbath. More specifically, first of all, this article analyzes some notable phenomena of the life crisis in the contemporary world, such as deaths from intentional self-harm (suicides), deaths from industrial accidents and disasters, the real-life situation of vulnerable populations, people's indifference and insensitivity to the situation, and natural environmental degradation, by reflecting on current global issues as well as issues in Korea. This paper also criticizes neoliberalism, productivism, consumerism, economic materialism, egotism, and anthropocentrism as ideologies for causing these phenomena. After the criticism, the author interprets, from biblical and theological perspectives on the Christian Sabbath, main purposes and meanings of the Sabbath for contemporary society that are deeply connected with the crisis of life on earth: confessing that God takes the initiative to govern every creature's living and being; building the relationship with the God who has given the power of life to all living beings; practicing the Sabbath rest by living a holy life; and participating in the Sabbath rest as 'life-giving ministry.' In conclusion, this article suggests Christian educational practices that confront the life crisis, rooted in the purposes and meanings of the Christian Sabbath: reminding participants of the belief that God is the source of life on earth; cultivating 'life literacy'; helping people to resist the crisis of life; and encouraging humans to pursue the well-being and peace of both humanity and the earth.

• Journal of The Korean Association For Science Education
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• v.43 no.1
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• pp.49-57
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• 2023

The purpose of this study is to analyze the school biology curriculum of the Royal Society of Biology (RSB) for school biology education in the United Kingdom (UK), and to examine the implications for Korean school biology education. The RSB school biology curriculum consists of three dimensions (the practices of biology, the concepts of biology, and the application of biology) and seven big questions. The contents of RSB school biology curriculum are structured according to age, 5-11, 11-16, and 16-19. The practices of biology of the UK RSB school biology curriculum emphasize biology activities should be linked to other communities and communicated and shared through evidence-based discussions. The concepts of biology dimension of the UK RSB school biology curriculum systematized the contents to be detailed considering school-level and ages with 5-7, 7-11, 11-14, 14-16, and 16-19 years old. The UK RSB biology curriculum is composed of human health, biological structure and function, biological growth and reproduction, and biological coexistence, showing a significant difference from Korean national curriculum when comparing the content elements with the core concepts of biology. In terms of the application of biology of the RSB school biology curriculum, three themes were commonly applied to all students, regardless of school level or age, such as development of application methods to promote health and environmental welfare, evaluation of the impact and application of biology knowledge. However, the content elements of the three themes were systematized according to the ages of 5-11, 11-16, and 16-19 years old. It is necessary to reorganize the contents of biology curriculum in Korea by referring to the content system of the UK RSB biology curriculum and to research ways to strengthen connectivity according to age or school level as well as dimensions and big questions.

• The Science & Technology
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• v.32 no.2 s.357
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• pp.74-79
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• 1999

유럽연합(EU)의 생명공학은 어디까지 와 있는가. EU는 생명공학 연구에서 미국ㆍ일본과 더불어 경쟁력을 강화하기 위해 장기프로그램을 세우고 막대한 예산을 투입하고 있다. 81년 연구프로그램 태동과 함께 시작된 생명공학기술개발은 생화학 및 유전공학의 연구결과를 유럽의 농업문야에 응용하는데 초점을 두었다. 유럽연합의 생명공학 연구현황을 정재준 재영한국과학기술자협회장의 특별기고를 통해 알아본다.

• 한국데이터정보과학회:학술대회논문집
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• 2006.04a
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• pp.77-85
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• 2006

본 논문에서는 간이생명표 확장기법인 HP8(Heligman and Pollard 8-parametric) 모형과 spline 내 삽법을 이용한 사망확률 계산 결과를 비교하고 HP8 모형을 우리나라 간이생명표 자료에 적용하여 각 연령별, 연도별호 사망확률을 계산하였다. 그리고 HP8 모형의 8개 모수와 사망확률을 계산하는데 있어 SAS/OR의 NLP procedure를 이용한 결과와 UNO(United Nation)에서 인구통계분석을 목적으로 만든 소프트웨어인 MORTPAK을 이용한 결과를 비교하였다. 분석에 사용한 자료는 통계청에서 제공되는 1971년부터 2003년까지 우리나라 간이생명표 자료이다.

• Ecology and Resilient Infrastructure
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• v.6 no.1
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• pp.77-77
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• 2019

• Proceedings of the Korean Society of Crop Science Conference
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• 2021.10a
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• pp.95-95
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• 2021