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읍·면 지역 에너지 소비, 재생에너지 잠재량 조사에 기반한 에너지 자립 가능성 연구 - 충남 홍성군을 중심으로 -
윤성권 ( Yun Seong Gwon ),김윤성 ( Kim Yun Soung ) 한국농촌계획학회 2023 농촌계획 Vol.29 No.2
In order to energy self-sufficiency in town and village areas, it is important to break down the spatial unit and understand the scale of the local energy supply and demand system. In this study identified the energy consumption and renewable energy resources of towns and villages in Hongseong County. Energy self-sufficiency rates and possibilities were derived for each region, and suitable types of self-sufficiency were suggested. As a result, it was found that Hongdong-myeon, Janggok-myeon, and Seobu-myeon have the potential to achieve energy self-sufficiency. Each of these areas has unique characteristics that make them suitable for different types of energy models. Hongdong-myeon could be classified as a rural, energy integration, and energy self-sufficiency model, Janggok-myeon as a mountainous, bioenergy, and energy trading model, and Seobu-myeon as a fishing village, solar, and energy self-sufficiency model. This study can assist in recognize the phenomenon in rural areas, which will help in formulating practical and effective energy self-sufficiency plans for these areas.
Gwon, Hyo Jin,Kang, Na-Ri,Lee, Yunju,Won, Sung Ok,Chang, Hye Jung,Choi, Ji-Won,Kang, Chong-Yun,Kim, Seong Keun,Kwon, Beomjin,Nahm, Sahn,Kim, Ju-Young,Kim, Jin-Sang,Baek, Seung-Hyub American Chemical Society 2016 Chemistry of materials Vol.28 No.19
<P>Controlling crystalline phases in polymorphic materials is critical not only for the fundamental understanding of the physics of phase formation but also for the technological application of forbidden, but potentially useful physical properties of the nominally unstable phases. Here, using tin oxide (SnO2) as a model system, we demonstrate a new way to enhance the mechanical hardness of an oxide by stabilizing a high-pressure dense phase through nitrogen integration in the oxide. Pristine SnO2 has a tetragonal structure at the ambient pressure, and undergoes phase transitions to orthorhombic and cubic phases with increasing pressure. Leveraging the enhanced reactivity of nitrogen in plasma, we are able to synthesize tin oxynitride (SnON) thin films with a cubic phase same as the high-pressure phase of SnO2. Such nitrogen-stabilized cubic SnON films exhibit a mechanical hardness of similar to 23 +/- 4 GPa, significantly higher than even the nitride counterpart (Sn3N4) as the result of the shortened atomic distance of the denser, high-pressure cubic phase. Moreover, SnON has a heavily doped, n-type semiconducting property with a controllable optical bandgap. Our work will provide new opportunities to search for and to utilize beneficial, but hidden physical properties that exist in a particular phase stable only at extreme conditions.</P>
윤원식 ( Yun Won Sig ),최봉재 ( Choe Bong Jae ),백원기 ( Baeg Won Gi ),허권 ( Heo Gwon ),서영배 ( Seo Yeong Bae ),이재성 ( Lee Jae Seong ),최호영 ( Choe Ho Yeong ) 대한본초학회 2003 大韓本草學會誌 Vol.18 No.4
N/A Objectives : Gangwhal is the root of Ostericum koreanum Maxim. (family Umbellifeme) and a popular crude drug used to expel wind from the body surface, to remove dampness and to relieve pain. In this study, we compare and cluster the genes of 0. koreanum cultivated in Korea as Gangwhal for analyzing the genetic relationship. Methods : RAP13 method Results : Nam-gangwhal and Buk-gangwhal was present very similar polymorphic band with each Other. Conclusion : Nam-gangwhal and Buk-gangwhal cultivated in Korea have very similar molecular patterns in genetic analysis such as RAPD analysis. Actually it is very difficult to distinguish its differences by genetic analysis.