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Carbon Nitrides 나노구조체를 이용한 CO2 포집 연구의 최신동향
하성진(Seongjin Ha),이동기(Dongki Lee),김문희(Wenji Jin),박대환(Dae-Hwan Park) 한국세라믹학회 2019 세라미스트 Vol.22 No.3
Carbon nitride has drawn broad interdisciplinary attention in diverse fields such as catalyst, energy storage, gas adsorption, biomedical sensing and even imaging. Intensive studies on carbon dioxide (CO2 ) capture using carbon nitride materials with various nanostructures have been reported since it is needed to actively remove CO2 from the atmosphere against climate change. This is mainly due to its tunable structural features, excellent physicochemical properties, and basic surface functionalities based on the presence of a large number of –NH or –NH 2 groups so that the nanostructured carbon nitrides are considered as suitable materials for CO2 capture for future utilization as well. In this review, we summarize and highlight the recent progress in synthesis strategies of carbon nitride nanomaterials. Their superior CO2 adsorption capabilities are also discussed with the structural and textural features. An outlook on possible further advances in carbon nitride is also included.
세라믹 LDH 나노하이브리드를 이용한 MRI 조영제의 최신 연구동향
하성진(Seongjin Ha),김문희(Wenji Jin),박대환(Dae-Hwan Park) 한국세라믹학회 2019 세라미스트 Vol.22 No.3
Ceramic layered double hydroxide (LDH) nanohybrids have attracted considerable interest in biomedical science due to their unique structural feature and characteristics in biological condition. Many studies on LDH nanoparticles have been reported in diagnosis applications including magnetic resonance imaging (MRI) contrast agents in order to not only provide better imaging performance through multimodal imaging strategy, but realize therapeutic function which treat cancers in one platform. This review highlights the recent progress in MRI T 1 contrast agent, dual modal imaging system, and MRI-guided drug delivery systems ranging from synthetic method and characterization to evaluation in vitro and in vivo based on the ceramic LDH nanohybrids. Future research directions are also suggested for next-generation bio-imaging contrast agent.
근 · 원거리 지진특성을 고려한 건축물의 비선형 시간이력해석 평가
조수민(Jo, Su-Min),하성진(Ha, SeongJin) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.2
It is important to understand how the characteristics of ground motions affect the response of structures. In particular, the seismic response of the structure appears different depending on the location of the earthquake-induced fault(near-field or far-fault). Recently, the near-field ground motions occur in the Korean Peninsula and far-fault ground motions occur relatively far from the coast. In this study, the evaluation of seismic response of structures according to near-field and far-fault ground motions was conducted. As a result of the analysis, it was found that the responses of the structure with near-field ground motions showed larger and variation of the responses were higher than those from far-fault ground motions.