• Agrochemical news magazine
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• v.21 no.2 s.155
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• pp.46-49
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• 2000

살균제를 지속적으로 사용하는데 있어 저항성관리는 매우 중요하다. 저항성 관리가 없으면 농민과 재배자에 이용가능한 살균 성분수와 효과가 심각하게 감소될 수 있으며 제품은 제조회사들이 작물보호분야에서 요구되는 기술발전에 필수적인 연구개발 계획을 유지하기에 충분한 이윤을 내기전에 쓸모없이 될 수도 있다. 그러나 저항성 관리는 그 역사가 20년도 안되는 비교적 새로운 과학이어서 아직도 많은 연구가 필요한 분야이다.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.11 no.3 s.96
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• pp.20-24
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• 1990

X선은 발암성이 있는 방사선이지만 X선을 잘 다루어 셀수도 없는 인명을 구해내고 있다. 농약의 경우도 편파적인 생각으로 그 안전성을 논하는 것은 오히려 인류의 안전에 위협이 될 수 있다. 앞으로의 과학기술발전에 획기적 성과를 기대할 수도 있겠지만 지금으로서는 무농약재배로 인류 생존은 불가능하다.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2011.10a
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• pp.439-440
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• 2011

• Korean Journal of Breeding Science
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• v.40 no.2
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• pp.188-191
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• 2008

'Hwangkeumnuri' is a japonica rice variety developed and registered by the rice breeding team of Honam Agricultural Research Institute, NICS, RDA in 2006. This variety was derived from a cross between 'Milyang 165' (Junambyeo) with good quality and high yield and HR14732-B-67-2-3 with multi-disease resistance. This variety has about 125 days growth duration from transplanting to harvesting in west-southern coast, Honam and Youngnam plain of Korea. It is about 76 cm in culm length and tolerance to lodging. In reaction to biotic and abiotic stresses, it shows resistance to blast, bacterial blight pathogen from $K_1$ to $K_3$ and stripe virus, but susceptible to other major diseases and insect pests. The milled rice of 'Hwangkeumnuri' exhibits translucent, relatively clear non-glutinous endosperm and midium short grain. It has similar amylose content of 18.9% and lower protein content of 6.2%, and good palatability of cooked rice compared with 'Nampyeongbyeo'. The milled rice yield performance of this variety is about 5.74 MT/ha in local adaptability test for three years. 'Hwangkeumnuri' would be adaptable to west-southern coast, Honam and Yeongnam plain of Korea.

• Korean Journal of Psychosomatic Medicine
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• v.24 no.1
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• pp.102-108
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• 2016

Objectives : The deficit of recognition memory has been found as one of the common neurocognitive impairments in patients with schizophrenia. In addition, they were reported to fail to enhance the memory about emotional stimuli. Previous studies have shown that bilateral eye movements enhance the memory retrieval. Therefore, this study was conducted in order to investigate the memory enhancement of bilaterally alternating eye movements in schizophrenic patients. Methods : Twenty one patients with schizophrenia participated in this study. The participants learned faces (angry or neutral faces), and then performed a recognition memory task in relation to the faces after bilateral eye movements and central fixation. Recognition accuracy, response bias, and mean response time to hits were compared and analysed. Two-way repeated measure analysis of variance was performed for statistical analysis. Results : There was a significant effect of bilateral eye movements condition in mean response time(F=5.812, p<0.05) and response bias(F=10.366, p<0.01). Statistically significant interaction effects were not observed between eye movement condition and face emotion type. Conclusions : Irrespective of the emotional difference of facial stimuli, recognition memory processing was more enhanced after bilateral eye movements in patients with schizophrenia. Further study will be needed to investigate the underlying neural mechanism of bilateral eye movements-induced memory enhancement in patients with schizophrenia.

• Economic and Environmental Geology
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• v.54 no.2
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• pp.285-297
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• 2021

Globally, nuclear-decommissioning facilities have been increased in number, and thereby hundreds of thousands of wastes, such as concrete, soil, and metal, have been generated. For this reason, there have been numerous efforts and researches on the development of technology for volume reduction and recycling of solid radioactive wastes, and this study reviewed and examined thoroughly such previous studies. The waste concrete powder is rehydrated by other processes such as grinding and sintering, and the processes rendered aluminate (C3A), C4AF, C3S, and ��-C2S, which are the significant compounds controlling the hydration reaction of concrete and the compressive strength of the solidified matrix. The review of the previous studies confirmed that waste concretes could be used as recycling cement, but there remain problems with the decreasing strength of solidified matrix due to mingling with aggregates. There have been further efforts to improve the performance of recycling concrete via mixing with reactive agents using industrial by-products, such as blast furnace slag and fly ash. As a result, the compressive strength of the solidified matrix was proved to be enhanced. On the contrary, there have been few kinds of researches on manufacturing recycled concretes using soil wastes. Illite and zeolite in soil waste show the high adsorption capacity on radioactive nuclides, and they can be recycled as solidification agents. If the soil wastes are recycled as much as possible, the volume of wastes generated from the decommissioning of nuclear power plants (NPPs) is not only significantly reduced, but collateral benefits also are received because radioactive wastes are safely disposed of by solidification agents made from such soil wastes. Thus, it is required to study the production of non-sintered cement using clay minerals in soil wastes. This paper reviewed related domestic and foreign researches to consider the sustainable recycling of concrete waste from NPPs as recycling cement and utilizing clay minerals in soil waste to produce unsintered cement.

• Journal of Korean Elementary Science Education
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• v.42 no.4
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• pp.560-576
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• 2023

The purpose of this investigation is to: (1) to derive an improvement factor for inquiry-based simulated teaching-learning in pre-service teacher training programs, and pre-service teachers practice simulated teaching that reflect the improvement factor, (2) to analyze the difference in science intrinsic motivation according to science self-efficacy and inquiry-based simulated teaching-learning experience. To achieve these goals, we recruited five elementary and secondary teachers as experts to help us develop an improvement factor based on expert interviews. Subsequently, third-year pre-service teachers of a university of education participated in our analysis of differences in science intrinsic motivation, according to their level of science self-efficacy and experience with inquiry-based simulated teaching-learning. Our methodology involved applying the analytic hierarchy process to expert interviews to derive improvement factor for inquiry-based simulated teaching-learning, followed by a two-way ANOVA to identify significant differences in science intrinsic motivation between groups with varying levels of science self-efficacy. We also conducted post-analysis through MANOVA statements. The results of our study indicate that inquiry-based simulated teaching-learning can be improved through activities that foster digital literacy, ecological literacy, democratic citizenship, and scientific inquiry skills. Moreover, small group activities and student-centered teaching-learning approaches were found to be effective in developing core competencies and promoting science achievements. Specifically, pre-service teachers prepared a teaching-learning course plan and inquiry-based simulated teaching-learning in seventh-grade in the Earth and Space subject area. Pre-service teachers' science intrinsic motivation analyze significant differences in all levels of science self-efficacy before and after simulated teaching-learning and significant difference in the interaction effect between simulated teaching-learning and scientific self-efficacy. Particularly, group with low scientific self-efficacy, the difference in science intrinsic motivation according to simulated teaching-learning was most significant. Teachers' scientific self-efficacy and intrinsic motivation are needed to improve science achievement and affective domains of students in class. Therefore, this study contributes to suggest inquiry-based simulated teaching-learning reflecting school practices from the pre-service teacher curriculum.

• Journal of The Korean Association For Science Education
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• v.23 no.2
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• pp.131-143
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• 2003

This study addresses the plan and methods of teaching/learning ethical aspects of science in the secondary schools, which were developed by the authors based on their 3 year research on ethical aspects of science and its teaching/learning. The general teaching/learning plan is composed of the instructional objectives of teaching/learning ethical aspect of science, its teaching/learning method and strategies, curricular content, and assessment. The article also attempted to describe a few words of care to keep in mind when apply the model and methods in the science classrooms.

• The Science & Technology
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• v.9 no.7 s.86
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• pp.56-59
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• 1976

새마을기술봉사단 청주도단은 올 1~3월중에 1과학자 1마을 기술결연계획에 따라 읍ㆍ면 단위로 17개마을에 대한 과학 기술결연을 끝냄으로서 영농의 과학화와 농가소득증대에 새로운 장을 마련했다. 제주도 농어촌의 가구당 평균소득은 대부분 1백만원을 상회하고 자립마을의 경우는 1백90여만원을 넘는 전국최상위의 고소득마을도 많이 있다. 그러나 소득의 고저를 막론하고 영농방식은 고질적인 과거의 경험만으로 이루어지고 있어 영농의 과학화가 시급한 당면과제로 부각되고 있다. 스스로도 미쳐 깨닫지 못하는 경영방식의 오류와 숱한 시술상의 난문제들을 발견하고도 이를 합리적으로 해결하려들기 보다는 불가항력으로 돌려버리거나 체념해버리는 경우가 허다한 것이다. 제주도단은 이같은 문제점을 보다 신속히 해결하고 과학기술이식의 중요성 및 새마을기술봉사단의 신뢰도를 제고시키기 위해 마을의 요청에 만 응하는 소극적이고 수동적인 자세를 탈피하여 보다 적극적으로 봉사단을 활성화시키는데 전력을 경주하고 있다. 기술결연시에는 단장, 부단장, 결연교수와 행정요원, 지방유지들이 모두 참석한 가운데 결연식을 같는 한편 기술강연 및 홍보영화(새마을과 과학기술, 히말라야의 도전등)를 상영, 새마을기술봉사단의 활동분야 소개와 과학기술의 중요성을 인식시켰다. 「그들(농어민)속에 우리(봉사단) 」가 되기 위해 봉사단원들은 결연마을나 새마을 현지를 직접 찾아가 기술애로사항을 해결하는데 헌신 노력한 결과 부락민들과의 유대강화는 물론 소득면에서 많은 성과를 거양했다. 많은 지도사례중에서 특히 성과가 있었던 몇가지 사례를 골라 게재해 보기로 한다.

• Journal of the Korean neurological association
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• v.36 no.4
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• pp.337-340
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• 2018

Human immunodeficiency virus (HIV) infection can result in ischemic stroke via several mechanisms, including opportunistic infection, vasculopathy, cardioembolism, and coagulopathy. HIV-vasculopathy is related to endothelial dysfunction, stenosis and aneurysm formation, infectious vasculitis, dissection and accelerated atherosclerosis during highly active antiretroviral therapy (HAART). We represent a case of HIV infection manifested as an acute ischemic stroke attack. After 4 months during HAART, our patient experienced a recurrent ischemic stroke with progression of middle cerebral artery stenosis.