http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이호식,김귀열,박용필,Lee, Ho-Shik,Kim, Gwi-Yeol,Park, Yong-Pil 한국정보통신학회 2007 한국정보통신학회논문지 Vol.11 No.12
OLED 소자의 전기적 특성을 온도 변화에 따라 측정을 하였다. OLED 소자는 N,N'-diphenyl-N,N'-bis(3-methylphenyl)-1,1'-diphenyl-4,4'-diamine (TPD)를 정공 수송층으로, tris(8-hydroxyquinoline) aluminum(Alq3)를 전자송층 및 발광층으로 사용하였다. 전압-전류 특성은 온도 범위 $10K{\sim}300K$에서 측정하였다. OLED 소자에서의 전도 메커니즘의 해석은 Fowler-Nordheim tunneling 법을 이용하여 해석하였다. Temperature-dependent current-voltage characteristics of Organic Light-Emitting Diodes(OLEDs) were studied. The OLEDs were based on the molecular compounds, N,N'-diphenyl-N,N'-bis(3- methylrhenyi)-1,1'-diphenyl-4,4'-diamine (TPD) as a hole transport and tris(8-hydroxyquinoline) aluminum(Alq3) as an electron transport and emissive material. The current-voltage characteristics were measured in the temperature range of 10[K] and 300[K]. A conduction mechanism in OLEDs was interpreted in terms of tunneling and trap-filled limited current.
Tungsten Carbide 표면에 코팅된 Re-Ir 박막의 표면 특성
이호식,천민우,박용필,Lee, Ho-Shik,Cheon, Min-Woo,Park, Yong-Pil 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.3
Rhenium-Iridium(Re-Ir) thin films were deposited onto the tungsten carbide(WC) molding core by sputtering system. The Re-Ir films were prepared by multi-target sputtering with iridium, rhenium and chromium as the sources. Argon and nitrogen were inlet into the chamber to be the plasma and reactive gases. The Re-Ir thin films were prepared with targets having atomic percent of 3:7 and the Re-Ir thin films were formed with 240 nm thickness. The Re-Ir thin films on tungsten carbide molding core were analyzed by scanning electron microscope(SEM) and surface roughness. Also, adhesion strength and coefficient friction of Re-Ir thin film were examined. The Re-Ir coating technique has been intensive efforts in the field of coating process because the coating technique and process have been their feature, like hardness, high elasticity, abrasion resistance and mechanical stability and also have been applied widely the industrial and biomedical areas. In this report, tungsten carbide(WC) molding core was manufactures using high performance precision machining and the efforts of Re-Ir coating on the surface roughness.
TKN/COD비가 높은 소규모지역 오수의 생물학적 영양소 제거
이호식 忠州大學校 1999 한국교통대학교 논문집 Vol.34 No.2
Biological nutrient removal(BNR) system have known to be sensitive to the wastewater characteristics varied with sewer system used, types of detergent used, temperature and others. Generally, BNR system have applied to TKN/COD ratios of less than 0.13. However, most small community wastewaters represent the TKN/COD ratios of more than 0.20. This study was conducted to analyze basic performance characterisitics of BNR system for high ratios of TKN/COD wastewaters of small community. BNR system was applied to laboratory reactor with a templerature of 10 to 12℃. A total of 13.6L volume capacity including anaerobic(1.6L), anoxic(4L) and aerobic(8L) zeones. As that results of this study, organic material removal efficiency was more than 95%, nitrification and denitrification efficiency were 95%, 88%, respectively. But phosphours removal efficiency was low since nitrate(NO₃-N) concentration of return sludge was more than 8.0 mg/L.
NAP Process를 이용한 하수의 질소,인 처리특성
李鎬植 충주대학교 1997 한국교통대학교 논문집 Vol.32 No.2
It has been known wastewater with low COD/TKN ratio produces higher effluent No₃-N and adversely affects poly P microbes returning it to an anaerobic stage in BNR systems. Nighsoil applicability to return activated sludge line(NAP,nightsoil added process) to minimize No₃-N effect to poly P microbes in anaerobic stage was examined with laboratory BNR systems operated at 20℃. The study results indicated nightsoil application could improve nitrogen and phosphorus removal efficiencies with low strength settled municipal wastewater persenting low COD/TKN ratios of 6.0. Even organic loading rates increased to 20 to 60 % due to nightsoil application, the effluent COD increased only 10 to 20% . This would suggest nightsoil can be used as another carbon source and nightsoil application to return activated sludge line can be another alternative modification to improve BNR systems.
Polyimide 터널 장벽을 이용한 Au/polyimide/유기 단분자막/Pb 구조에서 비탄성 전자 터널링에 관한 연구
이호식,이원재,장경욱,최명규,이성일,김태완,이준웅,M. Iwamoto 한국전기전자재료학회 2004 전기전자재료학회논문지 Vol.17 No.2
Using polyimide Langmuir-Blodgett(LB) films as a tunneling harrier, we fabricated Au/Polyimide/1-layer arachidic acid/Pb structure in order to investigate electron transport properties through a junction. It was found that 9-layer polyimide LB films function as a good tunneling harrier in a study of current-voltage(I-V) chararteristics. And several peaks originating in the vibrational modes of the constituent molecules of 1-layer arachidic acid LB films were clearly observed in d$^2$V/dI$^2$- V corves.
1995년 세계 체조 선수권 대회 남자 자유 경기 내용 분석 : 철봉 종목을 중심으로
이호식 경희대학교 체육과학연구소 1995 體育學論文集 Vol.23 No.-
This study was an analysis of 8 gymnasts, participating in Men's horizontal bar competition( Ⅲ competition), content of performances. Their performances of the exercises were closely examined by help of video display. This study showed their performances in three respect : construction of the exercise, degree of difficulty, and bonus points. The results were as follows. 1.Construction of the Exercise Each competitor performed his exercise with combinational skills thats have actual value rather than simple skill. 2.Degree of Difficulty Each competitor got better points, doing more D-, E parts than B-, C parts. 3.Bonus Points Performing the combinational exercises composed of various D parts, or more than D parts, rather than simple exercise, each competitor awarded bonus points. To sum up the results above, the performance of the exercise which is composed of various D-, E parts, that is, various combinations, had more point values than the simple performance made up of simple D parts.
이호식 충주대 산업과학기술연구소 1998 産業科學論文集 Vol.6 No.-
The returning ratio of water use is the ratio of water supply to wastewater flow. The data of returning ratio have been used its of the 1970∼80's until now. This study was conducted to analyze of water supply and wastewater flow the city of Chungju and Chechon. This survey was that divided into the returning ratio of water use for residential and industrial. Particularly, in considering of residential water using sectors were detached house, apartment house and the other communities, respectively. This study result of the water supply rate per capita per day were 200 lpcd(liter/cap./d) The returning ratio of water use the detached house, an apartment house and the other communities were 70%, 60∼80% and 70%, respectively. Approximately, the returning ratio of water use for industrial was around 100%.