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나노 Indium을 부착한 ZnO:In 가스센서의 제작 및 특성
정종훈,유윤식,유일,Jung, Jong-Hun,Yu, Yun-Sik,Yu, Il 한국재료학회 2011 한국재료학회지 Vol.21 No.9
Nano-indium-coated ZnO:In thick films were prepared by a hydrothermal method. ZnO:In gas sensors were fabricated by a screen printing method on alumina substrates. The gas sensing properties of the gas sensors were investigated for hydrocarbon gas. The effects of the indium concentration of the ZnO:In gas sensors on the structural and morphological properties were investigated by X-ray diffraction and scanning electron microscopy. XRD patterns revealed that the ZnO:In with wurtzite structure was grown with (1 0 0), (0 0 2), and (1 0 1) peaks. The quantity of In coating on the ZnO surface increased with increasing In concentration. The sensitivity of the ZnO:In sensors was measured for 5 ppm $CH_4$ gas and $CH_3CH_2CH_3$ gas at room temperature by comparing the resistance in air with that in target gases. The highest sensitivity to $CH_4$ gas and $CH_3CH_2CH_3$ gas of the ZnO:In sensors was observed at the In 6 wt%. The response and recovery times of the 6 wt% indiumcoated ZnO:In gas sensors were 19 s and 12 s, respectively.
Bi를 첨가한 백색 LED용 ZnS:Mn 황색형광체의 발광특성
정종훈,유일,Jung, Jong-Hun,Yu, Il 한국재료학회 2011 한국재료학회지 Vol.21 No.1
Bi co-doped ZnS:Mn,Bi yellow phosphors for white light emitting diodes were prepared by the conventional solidstate reaction method. The optical and structural properties of ZnS:Mn,Bi phosphors were investigated by x-ray diffraction, scanning electro microscopy and photoluminescence. ZnS:Mn,Bi phosphors showed XRD patterns of hexagonal structure. The photoluminescence of ZnS:Mn,Bi phosphors showed spectra extending from 480 to 700 nm, peaking at 580 nm. The photoluminescence of 580 nm in the ZnS:Mn,Bi phosphors was associated with the 4T1 ${\rightarrow}$ 6A1 transition of the Mn2+ ions. The highest photoluminescent intensity of the phosphors under 405 nm and 450 nm excitation was obtained at Bi concentration of 7mol%. The optimum mixing conditions with epoxy and yellow phosphor for white light emitting diodes were observed in a ratio of epoxy:yellow phosphor of 1:3.5. The CIE chromaticity of the white LED at the 1:3.5 ratio was X = 0.3454 and Y = 0.2449.
한방치료를 적용한 퇴행성 척추전방전위증 환자 치험 1례
배우열,권헌준,정종훈,이인선,조성우,Bae, U-Yeol,Kwon, Hun-Joon,Jung, Jong-Hun,Lee, In-Sun,Cho, Sung-Woo 척추신경추나의학회 2012 척추신경추나의학회지 Vol.7 No.1
본 논문은 좌하지비증(左下肢痺症)및 보행장애와 간헐적인 하지통증을 주소로 하며 Meyerding 분류 상 grade II에 해당하는 퇴행성 척추전방전위증 환자에 대한 증례로 기존에 많이 시행되어 오던 치료방법인 침구치료 및 약물치료에 추나치료를 추가 시행하여 통증 호전 및 한 번에 이동 가능한 보행 거리의 증가와 영상의학적 변화를 보였다. 향후 척추전방전위증 환자의 한방적 치료에 대한 보다 다양한 연구와 임상적 고찰이 이루어져야 한다고 사료된다. Objectives : This study was performed to report the effect of oriental medical treatment including chuna manual therapy for the spondylolisthesis patient. Methods : We treated him by oriental medical treatment including acupuncture, herb therapy and chuna manual therapy. And the result was assessed by numerical rating scale(NRS), walking distance at once and radiological examination. Results : After treatment, NRS changed from 8 to 4, walking distance at once changed from 175m to 500m, percent of slip changed from 28.62% to 19.80% and slip angle changed from $20.0^{\circ}$ to $22.8^{\circ}$. Conclusions : In this study, oriental medical treatment including chuna therapy was effective in spondylolisthesis patient. But additional studies will be needed.
윤수진(Soojin Yoon),정종훈(Jong-Hun Jung),김환국(HwanKuk Kim) 한국정보보호학회 2015 情報保護學會誌 Vol.25 No.5
HTML5가 발표되고, 웹상에서 HTML5 신요소와 자바스크립트를 이용한 다양한 기능 구현이 가능하게 되었다. 기존 웹에서는 외부 플러그인을 이용하여야 가능했던 기능들이 웹의 자체 기능으로 구현이 가능해졌다. 하지만 이로 인해 기존에 플러그인인 ActiveX, Flash를 이용했던 공격 대신 HTML5와 자바스크립트를 이용한 공격이 주목 받고 있다. 본 논문에서는 HTML5와 자바스크립트를 이용한 공격들을 살피고, 공격의 파급력과 대책의 중요성을 확인한다.