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Electrochemical synthesis of nanosized hydroxyapatite/graphene composite powder
Vesna Mi?kovi?-Stankovi?, Sanja Erakovi?, Ana Jankovi?, Maja Vuka?inovi?-Sekuli?, Miodrag Mitri?, Young Chan Jung, Soo Jin Park, Kyong 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.4 2 233-240 (8 pages)
Electrochemical synthesis was employed to prepare a novel hydroxyapatite/graphene (HAP/ Gr) composite powder suitable for medical applications as a hard tissue implant (scaffold). The synthesis was performed in a homogeneous dispersion containing Na2H2EDTA·2H2O, NaH2PO4 and CaCl2 with a Ca/EDTA/PO4 3? concentration ratio of 0.25/0.25/0.15M, along with 0.01 wt% added graphene nanosheets, at a current density of 137 mA cm?2 and pH value of 9.0. The field emission scanning electron microscopy and... -
Carbon nanotubes synthesis using diffusion and premixed flame methods: a review
Garima Mittal, Vivek Dhand, Kyong Yop Rhee, Hyeon-Ju Kim and Dong Ho Jung 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.1 1 1-10 (10 pages)
In recent years, flame synthesis has absorbed a great deal of attention as a combustion method for the production of metal oxide nanoparticles, carbon nanotubes, and other related carbon nanostructures, over the existing conventional methods. Flame synthesis is an energyefficient, scalable, cost-effective, rapid and continuous process, where flame provides the necessary chemical species for the nucleation of carbon structures (feed stock or precursor) and the energy for the production of carbon... -
High Power Electric Double Layer Capacitor(EDLC's)
M.Endo, T.Takeda, Y.j.Kim 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters Vol.1 No.3&4 1 117-128 (12 pages)
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Simulation of Various Baffle Types in a Constructed Wetland Sedimentation Tank using CFD
Taegyun Noh, Jechan Jeon, Lee-Hyung Kim 한국습지학회 한국습지학회지 6 Pages
한국습지학회 한국습지학회지 2016, Vol.18 No.3 15 324-329 (6 pages)
constructed wetland sedimentation basins, this study determined the optimal position for baffle installation, and applied Computational Fluid Dynamics (CFD) to the cross-sectional design of wetlands. CFD analysis revealed that the decrease in flow velocity with baffle installation enhanced the efficiency of sedimentation of particulate matters. Vertical baffles had higher sedimentation efficiency than those with an inclined angle. When vertical baffles were installed in the sedimentation basin... -
The History of the Korean Science Curriculum and the Introduction of the Present 2015 Science Curriculum
Ha Minsu 이화여자대학교 교과교육연구소 교과교육학연구 14 Pages
이화여자대학교 교과교육연구소 교과교육학연구 2017, 제 21권 3호 1 171-184 (14 pages)
The purpose of this study is to identify the history of the science curriculum in Korea and to review the science curriculum launched in 2015. Science has become an independent subject from the secondary curriculum for the purposes of developing Korean industry. The third curriculum was published by revising the second curriculum and adding an academic focus. The third curriculum was revised to create the fourth curriculum by introducing the notion of a human-centered curriculum, which is mainly... -
Induction of antibody and interferon-γ production in mice immunized with virus-like particles of swine hepatitis E virus
Young-Jo Song, Woo-Jung Park, Seul-Kee Lee, Joong-Bok Lee, Seung-Yong Park, Chang-Seon Song, Sang-Won Lee, Kun-Ho Seo, Young-Sun 대한수의학회 Journal of Veterinary Science 4 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 4호 15 575-578 (4 pages)
of mice immunized with the VLPs were evaluated. IgG titers specific for the capsid protein of swine HEV were significantly higher for all groups of mice immunized with the VLPs than those of the negative control mice. Splenocytes from mice immunized with the VLPs also produced significantly greater quantities of interferon (IFN)-γ than interleukin (IL)-4 and IL-10. These newly developed swine HEV VLPs have the capacity to induce antigen-specific antibody and IFN-γ production in immunized mice. -
정재초음파를 이용한 유동중 미세 입자 위치 제어
조승현, 서대철, 안봉영, 김기복, 김용일, Cho. Seung-Hyun, Seo. Dae-Cheol, Ahn. Bong-Young, Kim. Ki-Bok, Kim. Yong-Il 한국비파괴검사학회 비파괴검사학회지 6 Pages
한국비파괴검사학회 비파괴검사학회지 2008, Vol.28 No.2 131-136 (6 pages)
정재초음파를 이용하면 유체에 잠겨 있거나 유체를 따라서 흐르는 미세 입자의 조작이 가능하다. 정재초음파 장이 입자에 힘을 작용하여 입자를 음압마디 또는 반음압마디로 이동시킨다. 본 연구에서는 정재초음파의 주파수를 조정함으로써 유동 중 미세 입자의 위치를 제어하는 방법을 제안하고자 한다. 이를 위해 먼저 수침형 초음파 트랜스듀서를 이용하여 폭 수 밀리미터의 미세 채널을 가지는 정재초음파 발생시스템을 구성하였다. 제안한 발생시스템을 이용하여 주파수 2 MHz부터 2.5 MHz까지 영역에서 정재초음파 장을 발생시키고,...
