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書簡 중심의 문집 출현과 『退溪集』 ― 『退溪集』 諸 異本에 대한 한 고찰 ―
영남퇴계학연구원 퇴계학논집 2015, 제 17호 5 141-178 (38 pages)
이 글에서는 書簡 중심의 문집으로서의 『退溪集』의 성격에 대해서 살 펴보았다. 『퇴계집』에서 서간은 서간만으로 외따로 떨어져 있지 않다. 서간을 매개로 교류한 인물들은, 다시 말하면 서간 對方人物들은 바로 詩를 주고받는 대상이기도 하였고, 祭文과 墓道文字, 그리고 序記跋 등 의 글을 지어서 보내준 인물들이기도 하였다. 이와 같은 측면에 주목해 서 『퇴계집』 편집자들은 서간 대방인물들을 동일 부류의 人物群으로 분 류해서 편집하고, 그것들과 다른 詩와 散文 작품들이 서로 연계될 수 있 도록 해서, 退溪 李滉을... -
Control Efficacy of Bacillus velezensis AFB2-2 against Potato Late Blight Caused by Phytophthora infestans in Organic Potato Cultivation
Min Jeong Kim, Chang Ki Shim, Jong-Ho Park 한국식물병리학회 The Plant Pathology Journal 16 Pages
한국식물병리학회 The Plant Pathology Journal 2021, 37권 6호 8 580-595 (16 pages)
Although late blight is an important disease in eco- friendly potato cultivation in Korea, it is highly depen- dent on the use of eco-friendly agricultural materials and the development of biological control technology is low. It is a necessary to develop an effective biocontrol agent to inactivate late blight in the field. AFB2-2 strain is a gram-positive with peritrichous flagella. It can uti- lize 20 types of carbon sources, like L-arabinose, and D- trehalose at 35°C. The optimal growth... -
Preparation of photoresist-derived carbon micropatterns by proton ion beam lithography and pyrolysis
Hui-Gyun Nam, Jin-Mook Jung, In-Tae Hwang, Junhwa Shin, Chang-Hee Jung, Jae-Hak Choi 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 8 55-61 (7 pages)
Carbon micropatterns (CMs) were fabricated from a negative-type SU-8 photoresist by proton ion beam lithography and pyrolysis. Well-defined negative-type SU-8 micropatterns were formed by proton ion beam lithography at the optimized fluence of 1×1015 ions cm?2 and then pyrolyzed to form CMs. The crosslinked network structures formed by proton irradiation were converted to pseudo-graphitic structures by pyrolysis. The fabricated CMs showed a good electrical conductivity of 1.58×102 S cm?1 and a... -
Extraction and characterization of lignin from black liquor and preparation of biomass-based activated carbon therefrom
Daeyeon Kim, Jinsil Cheon, Jeonghoon Kim, Daekyun Hwang, Ikpyo Hong, Oh Hyeong Kwon, Won Ho Park, Donghwan Cho 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 14 81-88 (8 pages)
In the present study, biomass-based lignin was extracted from industrial waste black liquor and the extracted lignin was characterized by means of attenuated total reflectance- Fourier transform infrared spectroscopy and 1H-nuclear magnetic resonance spectroscopy. The extracted lignin was carbonized at different temperatures and then activated with steam at 850oC. The extracted lignin in powder state was transformed into a bulky carbonized lignin due to possible fusion between the lignin... -
Li-ion battery anodes from ginkgo leaf-derived nanoporous carbons rich in redox-active heteroatoms
Na Rae Kim, Hong Joo An, Young Soo Yun, Hyoung-Joon Jin 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 13 110-114 (5 pages)
Lithium-ion batteries (LIBs) have attracted increasing attention as a sustainable power source due to the rapid growth in mobile electronics and electric automobile markets, driven by increasing environmental awareness [1-4]. The electrochemical performance of LIBs is strongly dependent on the active electrode materials. Therefore, their continuing advanced development is of key importance to meet the expectations of the market [5-7]. Graphite, commonly used in LIB anodes, forms binary graphite... -
Study on urea precursor effect on the electroactivities of nitrogen-doped graphene nanosheets electrodes for lithium cells
Ki-Yong Kim, Yongju Jung, Seok Kim 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 5 40-46 (7 pages)
Nitrogen-atom doped graphene oxide was considered to prevent the dissolution of polysulfide and to guarantee the enhanced redox reaction of sulfur for good cycle performance of lithium sulfur cells. In this study, we used urea as a nitrogen source due to its low cost and easy preparation. To find the optimum urea content, we tested three different ratios of urea to graphene oxide. The morphology of the composites was examined by field emission scanning electron microscope. Functional groups and... -
억압적 권력에 저항한 기독교의 공공성 연구 -목사 고영근의 1980~1990년대 활동을 중심으로-
한국종교교육학회 종교교육학연구 2021, 제 67권 10 179-203 (25 pages)
한국 기독교는 시민사회와 떼려야 뗄 수 없는 긴밀한 관계를 갖고 죽음의 위협에도 굴하지 않는 자기 헌신과 역량을 결집시켜 역사의 진보를 이끌어 내었다. 하지만 현재에 이르러서는 역동적인 역사성과 공적 역할은 빛을 바래고 시민사회가 걱정해야 하는 이기적인 종교집단의 모습으로 위상이 추락하였다. 이제 한국 기독교는 비대해진 몸집을 줄이고 1980-90년대에 불의한 정권과 치열하게 싸웠던 기독교의 사회적 역할을 반추하며 희석되는 기독교의 역사성, 공공성을 다시 세워 민주시민 사회의 근간을 이뤄야 하는 필요성에 직면해... -
문화적 혼존성 관점으로 본 대중음악 연구 -아메리카 대륙의 문화 융합을 중심으로-
이창구 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 8 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2017, 제 7권 제 11호 76 795-802 (8 pages)
한국은 1950년대는 해방과 분단, 전쟁을 거치고 난 후 본격적으로 미국의 자본주의 체제로 편입 되면서 그 문화의 영향을 본격적으로 받아들이기 시작하였고 대중음악 또한 미국을 중심으로 하는 세계자본주의 체제의 대중문화에 직접 편입되기 시작했다. 이렇게 미국의 영향을 받으며 발전된 한국 의 대중음악은 1990년대 중반이후에 아시아 지역을 넘어서 남미와 유럽, 그리고 우리에게 영향을 준 미국에까지 확산되는 움직임을 보이고 있다. 이 시점에서 K-POP의 글로벌화에 중요한 관점중 하나는 단순히 밖에서 안으로 혹은 안에서... -
The Japanese Hands-Off Approach to Curriculum Guidelines for Early Childhood Education as a Form of Cultural Practice
Akiko Hayashi 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 17 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2011, Vol.5 No.2 6 107-123 (17 pages)
This paper explores the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) approach to curriculum policy in early childhood education. The Kindergarten Curriculum Guideline contains few directives or practical suggestions for teachers. The abstractness and indirectness of the MEXT approach to establishing curricular guidelines stands in stark contrast to the much more explicit and directive curriculum guidelines for early childhood education found in China, the US,... -
Relationships between dielectric properties and characteristics of impregnated and activated samples of potassium carbonate- and sodium hydroxide-modified palm kernel shell for microwave-assisted activation
Norulaina Alias, Muhammad Abbas Ahmad Zaini, Mohd Johari Kamaruddin 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 9 62-72 (11 pages)
The aim of this work was to evaluate the dielectric properties of impregnated and activated palm kernel shells (PKSs) samples using two activating agents, potassium carbonate (K2CO3) and sodium hydroxide (NaOH), at three impregnation ratios. The materials were characterized by moisture content, carbon content, ash content, thermal profile and functional groups. The dielectric properties were examined using an open-ended coaxial probe method at various microwave frequencies (1?6 GHz) and... -
Study on properties of eco-friendly reduction agents for the reduced graphene oxide method
Young-il Na, Young Il Song, Sun Woo Kim, Su-Jeong Suh 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 1 1-9 (9 pages)
We studied the basic properties and fabrication of reduced graphene oxide (rGO) prepared using eco-friendly reduction agents in the graphene solution process. Hydrazine is generally used to reduce graphene oxide (GO), which results in polluting emissions as well as fixed nitrogen functional groups on different defects in the graphene sheets. To replace hydrazine, we developed eco-friendly reduction agents with similar or better reducing properties, and selected of them for further analysis. In... -
Synthesis and characterization of carbon doped TiO₂ photocatalysts supported on stainless steel mesh by sol-gel method
JO. Tijani, OO. Fatoba, TC. Totito, WD. Roos, LF. Petrik 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 6 48-59 (12 pages)
This study synthesized pure anatase carbon doped TiO₂ photocatalysts supported on a stainless steel mesh using a sol-gel solution of 8% polyacrylonitrile (PAN)/dimethylformamide (DMF)/TiCl₄. The influence of the pyrolysis temperature and holding time on the morphological characteristics, particle sizes and surface area of the prepared catalyst was investigated. The prepared catalysts were characterized by several analytical methods: high resolution scanning electron microscopy (HRSEM), energy... -
Study of complex electrodeposited thin film with multi-layer graphene-coated metal nanoparticles
Young-Lae Cho, Jung-woo Lee, Chan Park, Young-il Song, Su-Jeong Suh 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 8 68-73 (6 pages)
We have demonstrated the production of thin films containing multilayer graphene-coated copper nanoparticles (MGCNs) by a commercial electrodeposition method. The MGCNs were produced by electrical wire explosion, an easily applied technique for creating hybrid metal nanoparticles. The nanoparticles had average diameters of 10?120 nm and quasispherical morphologies. We made a complex-electrodeposited copper thin film (CETF) with a thickness of 4.8 μm by adding 300 ppm MGCNs to the electrolyte... -
Effect of carbonization temperature on crystalline structure and properties of isotropic pitch-based carbon fiber
Jung Dam Kim, Jae-Seung Roh, Myung-Soo Kim 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 6 51-60 (10 pages)
Isotropic pitch-based fibers produced from coal tar pitch with the melt-blowing method were carbonized at temperatures ranging from 800 to 1600oC to investigate their crystalline structure and physical properties as a function of the carbonization temperature. The in-plane crystallite size (La) of the carbonized pitch fiber from X-ray diffraction increased monotonously by increasing the carbonization temperature resulting in a gradual increase in the electrical conductivity from 169 to 3800... -
Morphologies and surface properties of cellulose-based activated carbon nanoplates
Seulbee Lee, Min Eui Lee, Min Yeong Song, Se Youn Cho, Young Soo Yun, Hyoung-Joon Jin 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 5 32-38 (7 pages)
In this study, cellulose nanoplates (CNPs) were fabricated using cellulose nanocrystals obtained from commercial microcrystalline cellulose (MCC). Their pyrolysis behavior and the characteristics of the product carbonaceous materials were investigated. CNPs showed a relatively high char yield when compared with MCC due to sulfate functional groups introduced during the manufacturing process. In addition, pyrolyzed CNPs (CCNPs) showed more effective chemical activation behavior compared with... -
Waste coffee grounds-derived nanoporous carbon nanosheets for supercapacitors
Min Hong Park, Young Soo Yun, Se Youn Cho, Na Rae Kim, Hyoung-Joon Jin 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 8 66-71 (6 pages)
The development of nanostructured functional materials derived from biomass and/or waste is of growing importance for creating sustainable energy-storage systems. In this study, nanoporous carbonaceous materials containing numerous heteroatoms were fabricated from waste coffee grounds using a top-down process via simple heating with KOH. The nanoporous carbon nanosheets exhibited notable material properties such as high specific surface area (1960.1 m2 g?1), numerous redox-active heteroatoms... -
Effect of fiber-matrix adhesion on the fracture behavior of a carbon fiber reinforced thermoplastic-modified epoxy matrix
H.J. Carrillo-Escalante, A. ?lvarez-Castillo, A. Valadez-Gonz?lez, P. J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 6 47-56 (10 pages)
In this study, the fracture behavior of a thermoplastic-modified epoxy resin reinforced with continuous carbon fibers for two levels of fiber-matrix adhesion was performed. A carbon fiber with commercial sizing was used and also treated with a known silane, (3-glycidoxy propyl trimethoxysilane) coupling agent. Toughness was determined using the double cantilever test, together with surface analysis after failure using scanning electron microscope. The presence of polysulfone particles improved... -
Modifications of mechanical, thermal, and electrical characteristics of epoxy through dispersion of multi-walled carbon nanotubes in supercritical carbon dioxide
MGH ZAIDI, Sanjeev Joshi, Manoj Kumar, Deepak Sharma, Ashwin Kumar, Sarfaraz Alam, Prakash Sah 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.4 4 218-227 (10 pages)
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Carbon nanofiber-reinforced polymeric nanocomposites
Changwoon Jang, John Hutchins, Jaesang Yu 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.4 1 197-205 (9 pages)
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Synthesis and electrochemical analysis of Pt-loaded, polypyrroledecorated, graphene-composite electrodes
Jiyoung Park, Seok Kim 한국탄소학회 Carbon Letters 4 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.2 8 117-120 (4 pages)
In this study, an electro-catalyst of Pt nanoparticles supported by polypyrrole-functionalized graphene (Pt/PPy-reduced graphene oxide [RGO]) is reported. The Pt nanoparticles are deposited on the PPy-RGO composite by chemical reduction of H2PtCl6 using NaBH4. The presence of graphene (RGO) caused higher activity. This might have been due to increased electro-chemically accessible surface areas, increased electronic conductivity, and easier charge-transfer at polymer-electrolyte interfaces,... -
Preparation and Pore-Characteristics Control of Nano-Poros Materials using Organometallic Building Blocks
Gyn Hwan Oh, Chong Rae Park 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2003, Vol.4 No.1 1 1-9 (9 pages)
다공성 소재는 문자 그대로 많은 양의 기공을 함유하는 소재로서, 세재의 제조시 다량으로 사용되어 온 제올라이트 및 오염물질 제거용으로 사용되어 온 다공성 탄소와 같은 예에서 보는 바와 같이 오랜 세월동안 우리 생활의 일부로 존재해 왔다. 그러나, 이들 소재에 존재하는 기공들은 그 크기나 모양에 있어 규칙성 및 균일성을 찾아보기 힘들기 때문에 기공크기는 서브나노에서 서브미크론 혹은 미크론 크기까지 통계적 분포를 보이며 기공의 모양은 프랙탈적 특징을 나타내었다. -
Effects of the ASR-embedded Dictionary App Use on College Students in EFL Pronunciation Class
Hyun Il-sun 이화여자대학교 교과교육연구소 교과교육학연구 14 Pages
이화여자대학교 교과교육연구소 교과교육학연구 2018, 제 22권 6호 4 400-413 (14 pages)
This study explored the effects of the use of ASR-embedded dictionary app in providing corrective feedback on EFL college students pronunciation. During the six-week instruction, students of the ARS-based feedback group (n = 20) practiced their English pronunciation via the ARS-embedded dictionary app and those of the Peer-feedback group (n = 20) worked in pairs. Comparisons were made between pre- and post-test scores and the students responses to a follow-up questionnaire were analyzed by... -
Dewey, Freire, and Foucault and an Ever-Evolving Philosophy of (Mathematics) Education
Stinson, David W. 이화여자대학교 교과교육연구소 교과교육학연구 9 Pages
이화여자대학교 교과교육연구소 교과교육학연구 2016, 제 20권 2호 2 70-78 (9 pages)
In this essay, the author provides a working definition of philosophy from a cultural point of view, and argues the need for mathematics educators to develop their philosophy of mathematics teaching and learning or, to speak more broadly, their philosophy of education. He then historically situates three scholars?John Dewey, Paulo Freire, and Michel Foucault?who have been instrumental in the formulation of his philosophy of education. Next, he shares how the philosophies of these three scholars...
