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신영식,김문일 ( Y . S . Shin,M . I . Kim ) 한국열처리공학회 1990 熱處理工學會誌 Vol.3 No.1
In this study, TiN film was deposited onto steel by R.F.-PACVD in order to investigate the influence of parameters on the adhesion strength between film and substrate. Experimental results showed that adhesion strength by SAT is different from by optical microscopy. Adhesion strength is increased when the deposition temperature increases and is influenced by R.F. power and electrode distance. Especially heat treatment on the substrate has influenced over the adhesion strength, so it showed the 22 Newtons in adhesion strength by SAT and adhesion strength is decreased when deposition thickeness is thick and hardness is high. Also if the film is thick and high hardness simultaneous, the film was delaminated seriously.
플라즈마 화학증착법에서 증착변수가 TiN 증착에 미치는 영향(III) -r.f. power 및 전극간 거리를 중심으로-
김충환,신영식,김문일,Kim, C.H.,Shin, Y.S.,Kim, M.I. 한국열처리공학회 1990 熱處理工學會誌 Vol.3 No.1
To investigate the influence of r.f. power and electrode distance on the TiN deposition, TiN films were deposited onto STC3, STD11 steel and Si-wafer from gas mixtures of $TiC_4/N_2/H_2$ using the radio frequency plasma assisted chemical vapor deposition. The crystallinity of TiN film could be improved by the increase of r.f. power and the decrease of electrode distance. The TiN coated layer contains chlorine, its content were decreased with increasing r.f. power as well as decreasing electrode distance. And the thickness of deposited TiN was largely affected by r.f. power and electrode distance. The hardness of deposited TiN reached a maximum value of about Hv 2,000.
플라즈마 화학증착법 ( PACVD )에 의한 TiN증착시 증착변수가 미치는 영향 (2) -TiCl4 , N2의 입력분율을 중심으로-
이병호,신영식,김문일 ( B . H . Rhee,Y . S . Shin,M . I . Kim ) 한국열처리공학회 1989 熱處理工學會誌 Vol.2 No.4
To investigate the influence of TiCl₄, N₂inlet fraction on the TiN layer, TiN film was deposited onto the STC3 and STD11 steel from gas mixtures of TiCl₄/N₂/H₂by the radio frequency plasma assisted chemical vapor deposition. The films were deposited at various TiCl₄, N₂inlet fractions. The results showed that the film thickness was increased with TiCl₄, inlet fraction. However, while the thickness was increased with N₄inlet fraction under 0.4 the thickness was decreased with increasing N₂ inlet fraction over 0.4. The density of deposited films was varied as TiCl₄, N₂ inlet fraction and its maximum value was about 5.6g/㎤. The contents of chlorine were increased with increasing TiCl₄inlet fraction and nearly constant with increasing N₂inlet fraction.
이성범(Lee Sungbum),신규철(Shin Kyuchul),김희주(Kim Huijoo),김현주(Kim Hyunju),최창규(Choi Changkyoo),김문일(Kim Moonil) 한국지반환경공학회 2008 한국지반환경공학회논문집 Vol.9 No.2
고농도 입자성 유기 폐수를 대상으로 기존 혐기성 공정인 CSTR과 UASB공정으로 처리 시 불량한 상징수질, 불안정한 운전 특성과 같은 문제점이 제시되었다. 이에 본 연구는 새로운 개념의 ADEPT(Anaerobic Digestion Elutriated Phased Treatment) 공정을 주정폐수에 적용하여 처리 가능성을 평가하였다. CSTR과 ADEPT의 성능 비교 결과 ADEPT공정에서 gas 발생량은 약 2배였으며, 유기물 제거 효율과 고형물 제거 효율 역시 더 높은 효율을 보여주었다. 또한 ADPET는 비교적 짧은 HRT에서도 휘발성 지방산 생성으로 인한 pH 저하의 영향을 받지 않았으며, 안정적으로 pH를 유지하였다. ADEPT의 recycle ratio를 6Qin과 2Qin으로 변화를 주어 운전 시 6Qin의 운전 기간 동안 높은 처리 효율을 보여주었다. 따라서 ADEPT는 짧은 HRT로 인한 경제성 향상과 메탄 발생을 이용한 에너지 회수,또한 산 생성조에서 생성되는 유기산을 최대로 생산,BNR 공정의 유기 탄소원으로 활용 가치가 있다고 판단된다. It has been mentioned that CSTR (Completely Stirred Tank Reactor) and UASB (Upflow Anaerobic Sludge Blanket) processes, the existing anaerobic processes, have problems in the treatment of highly concentrated particulate organic wastewater (HCPOW). Therefore, this paper discusses the treatment possibility of distillery wastewater which is a typical HCPOW using ADEPT (anaerobic Digestion Elutriated Phased Treatment) process. In the comparison of CSTR and ADEPT, ADEPT produced much higher gas than that of CSTR removing more organic matters and suspended solids in ADEPT process, ADEPT had no effect on the decrease in pH by volatile fatty acids and showed steady pH in spite of relatively short HRT. In the results of removal rate according to recycle ratios between 6Qin and 2Qin in ADEPT, 6Qin showed high removal rate during the operation time. Therefore it appears that ADEPT had an applicability for the treatment of distillery wastewater. ADEPT could be a economical process, due to the short HRT, the energy recovery by the methane production, and the utilization for carbon source of produced organic acid from the ADEPT-acid reactor.
안성남,신동구,김상인,추호성,김문일,박익모,임한조,An Sung-Nam,Shin Dong-Gu,Kim Sang-ln,Choo Ho-Sung,Kim Moon-Il,Park Ikmo,Lim H. 한국전자파학회 2005 한국전자파학회논문지 Vol.16 No.3
In this paper we propose the compact three-layer EBG structure. The unit cell of the proposed EBG structure is composed of a square patch in the upper layer and a square ring stripline in the lower layer that are connected to the ground plane through conducting vias. Reflection phase analysis method and tangential transmission method were considered to accomplish effective EM simulation and measurement. EM simulation results indicate that bandgap characteristics of the EBG structure using both methods is nearly identical. Parametric studies have been performed with the EM simulator to analyze the properties of the EBG structure by investigating the phase shift of the normally incident plane wave, and the transmission measurements between simple monopole antennas positioned near the EBGstructure have been done. The operating fiefuency bandgap of the proposed EBG structure is about 34 $\%$ lower than the conventional EBG structure with the same size. Measured results show bandgap from 0.930 GHz to 0.945 GHz. 본 논문에서는 사각 패치와 사각 링 스트립선로가 전자기적으로 결합된 3층 구조의 소형화된 EBG구조를 제안하였다. 제안한 EBG 구조는 상층의 사각 패치와 하층의 사각 링 스트립선로가 비아에 의해 접지면에 연결되었다. 반사위상 EM시뮬레이션을 통해 EBG구조 표면에서의 반사위상을 계산하여 EBG구조의 밴드갭 특성을 연구하였고, 반사위상에서 나타나는 밴드갭과 투과계수(S$_{21}$)에서 나타나는 밴드갭이 일치하는 것을 EM 시뮬레이션을 통해 확인하였으며, 측정은 제작이 용이한 프로브 안테나를 사용하여 EBG 구조의 표면을 진행하는 표면파의 투과계수를 측정하였다. 제안한 EBG구조는 동일한 크기의 기존 3층 구조에 비하여 밴드갭이 나타나는 주파수가 약 34 $\%$ 감소되었다. 측정한 결과 제안한 구조는 0.930 GHz에서 0.945 GHz까지의 밴드갭을 갖는다.
Titaniun Interlayer가 TiN 박막의 밀착특성에 미치는 영향
공성호,김홍유,신영식,김문일 ( S . H . Kong,H . W . Kim,Y . S . Shin,M . I . Kim ) 한국열처리공학회 1992 熱處理工學會誌 Vol.5 No.1
In order to improve adhesive force of TiN film, we sputtered titanium as interlayer before TiN deposition by Plasma Enhanced Chemical Vapour Deposition. We observed changes of hardness and adhsion at a various thickness of titanium interlayer and also examined analysis. At the critical thickness of the titanium interlayer(about 0.2㎛) , adhesive force of TiN films were promoted mostly. But over the critical thickness, a marked reduction of adhesive force was showed, because of the internal stress of titanium interlayer. From AES analysis, the adhesion improvement of TiN films was mainly caused by nitrogen diffusion into titanium interlayer during TiN deposition process which relieved stress concentration at TiN coating-substrate interface.
신호연(Ho Yun Shin),윤태영(Tae Young Yoon),김문일(Moon Il Kim) 한국생물공학회 2015 KSBB Journal Vol.30 No.1
Nanomaterial-based artificial enzymes (Nanozymes) have attracted recent attention because of their unique advantageous characteristics such as excellent robustness and stability, low-cost production by facile scale-up, and longterm preservation capability that are critically required as an alternative to natural enzymes. These nanozymes exhibit natural enzyme-like activity, and they have been applied to diverse kinds of detection methods for disease-associated biomolecules such as DNAs, proteins, cells, and small molecules including glucose. To highlight the progress in the field of disease diagnostics using nanozyme, this review discusses many nanozyme-based detection methods categorized by the types of target biomolecules. Finally, we address the current challenges and perspectives for the widespread utilization of nanozyme - based disease diagnostics.