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전자선 증착장치 및 ITO 박막의 제작과 그 특성에 관한 연구
김수길,최범식,우정주,고년규,황정남,정원모,이철주 연세대학교 자연과학연구소 1982 學術論文集 Vol.9 No.-
태양 전지의 제작시 투명 전극막으로 쓰이는 ITO 박막을 제조하기 위하여 cathode 접지 방식의 전자총을 가진 정전 편향 집속형의 전자선 증착 장치를 제작하였다. 가속전압이 0∼15kV, 필라멘트 전류가 0∼28A, 두 전극판 사이의 간격이 11mm, anode와 deflector 사이의 간격이 30mm인 최적 실험조건하에서 생성된 전자선 spot의 크기는 길이가 20mm 폭이 1mm였으며, 전자선의 출력은 약 400W였다. 이 전자선 증착 장치를 이용하여 1600℃까지의 증발 온도를 가진 도체와 절연체 등을 쉽게 증착시킬 수 있었으며, 만드어진 ITO 박막은 약 5000Å의 두께에서 10^-1∼10^-2Ω·㎝의 비저항과 95%의 광투과율을 갖는다. An electron beam evaporator with a cathode grounded type electron gun was designed and constructed in order to deposit ITO thin films for photovoltaic applications. The optimum condition was observed with electode spacing of 11mm, 30mm between anode and deflector, a cathode inner diameter of 3mm and an anode inner diameter of 5mm. As the accelerating voltage varies from 0 to 15kV and ghe filament current from 0 to 28 A, the minimum electron beam spot has a 20mm length, and 1mm width and the output power ranges from 0 to 400W under the above optimum conditions. We can deposit materials whose evaporation temperature is over 1600℃ using this evaporator. And as a result ITO thin film showed a low resistivity of 10^-1∼10^-2Ω·㎝ and the transmittance of 95%.
전수경,김재진,나종범,김규혁 한국목재공학회 2002 목재공학 Vol.30 No.4
본 연구는 수액치환법을 이용한 침엽수 간벌소경재나 미(저)이용 활용수재의 산지 보존처리 기술을 개발하기 위하여 수행되었다. 본 논문에서는 증산법과 원구법을 이용한 3종 침엽수와 3종 활엽수의 방부제, 난연제, 치수안정제 처리 가능성을 조사하여 보고한다. 수종과 처리약제의 조합에 관계없이 원구법이 증산법에 비하여 약제의 목재내 침투가 양호할 뿐만 아니라 약제의 침투가 균일한 관계로 수분 이동경로를 이용한 처리재 생산은 원구법의 사용이 바람직하였다. 원구법 처리는 수관부를 절단한 후 실시하기 때문에 증산법에 비하여 처리가 용이할 뿐만 아니라 벌채 및 조재 후 산지의 일정 장소로 운재 후 처리를 실시하기 때문에 증산법과 비교할 때 집약적 처리로 단위시간당 처리재 생산량이 높고 산지 환경오염 문제도 예방할 수 있는 장점이 있다. This research was carried out to develop field treatment techniques of thinned small diameter softwood logs and less utilized hardwood logs using sap displacement method. In this paper, we report the feasibility of using transpiration method and butt-end method for the treatment of three softwood species and three hardwood species with preservatives, fire-retardant chemicals, and dimensional stabilizer. Butt-end method was effective as a field treatment technique compared to transpiration method when considered the treatability, easiness of treatment, productivity of treated wood, and environmental aspects related to chemical treatment, regardless of the combination of wood species and chemicals.
박균범,오수일 江原大學校附設體育科學硏究所 1997 江原大學校附設體育科學硏究所論文集 Vol.- No.21
This study to survey the change of life conciousness of 1040 middle school boys and girls completing the camping in Bak-Dam-Sa Student's Camping Place. I asked them to answer my questionnairess, and then have come to the conclusion from them as follows. 1. The spirit of self-sacrifice After camping, the dissatisfactions and complaints are decreased notably in the case of both boys and girls, and they have became not to avoid the hard work and changed into affirmative attitude to things. Above all, in the case of girls, the have changed into the positive action from the shame and appearance. 2. Self-confidence It turned out that students, both boy and girl altogrther, through camping, could have the opportunity to fine out their merit and demerit; in case of girl students, the could have the opportunity to be able to find out something to please themselves, and in case of bi\oy students, they could have the opportunity to make friends with others. Also, When they were asked if they could express their opinions with confidence, they showed a high positive response with the result of significant changing. 3. Responsibility After camping when they were asked on responsibility, they both boy and girl altogether, positively responded that they never failed to perform their tasks, never gave them up, and their best in everything they did. 4. Public morality After camping, for both boy and girl, positive changes has been brought in on the used of public facilities, fulfillment of every rules in school life, caution of safety during school life and experiences learned at school or at home. 5. Cooperation The result of camping shows that qualities of both boys and girls have meaningfully changed as respects the cooperative relations between friends, recognition of importance in community life, inprovenment of the spirit of collaboration and harmony with friends of teachers.
이수대,설정식,오상범 慶南大學校 附設 基礎科學硏究所 1991 硏究論文集 Vol.3 No.-
We measured the thermal expansion coefficient, the variation of refractivity and the stress-optical coefficient of the Bi₁₂SiO?? single crystal by the Mach-Zehnder interferometer. The thermal expansion coefficient of the Bi₁₂SiO? single crystal was 9×10?? /℃ at the near room temperature and 1×10?? /℃ at the near 200℃. The refractivity of the Bi₁₂SiO?? single crystal that was measured from the Brewster angle at the room temperature was 2.540. The stress optical coefficient q₁₃ was 6.6×10?? m²/N at the room temperature.
張壽賢,金範淑,金種培 군산대학교 1976 群山水産專門大學 硏究報告 Vol.10 No.1
It is so far suggested from the results of investigation on the changes of quality during the freezing storage of shrimp and swell fish that increasing of VB-N, TMA rapidly break down, increasing of Coliform MPN and decreasing of concentration of pigment mainly in the early stage of storage. In this paper, the raw material used for experimental sample after soaking during 1hr. in 5% ascorbic acid in 2% NaCl solution and 5% EDTA solution. The results of this study was that the sea food of freezing storage for domestic use and expore had better soaking during 1hr. in 5% EDTA solution.
에코뮤지엄 실현을 위한 청주시민의 지역유산에 대한 보전의식고찰
김수미,박광범 대한건축학회 2005 대한건축학회논문집 Vol.21 No.1
This research Investigates the residents consciousness about the local heritage In Chongju city In order to explore the possibility of an Eco-museum, It aims show the conditions which form the conservation consciousness of the residents sites, by finding out how often those local heritage site were visited or known Consequently, the relation between local heritage and residents depends on the length of time they have lived there and their age, ate And also changes depending on If residents arc local, or non-participates of local activities And this study find out local values and characteristics, thereby playing the role of improving the sense of preserving them
허도성,신수범 인제대학교 1999 仁濟論叢 Vol.14 No.3
금속 가공과정에서 사용되는 윤활유는 물에 잘 녹지 않는 지용성 물질이 많이 사용되고 있다. 한편 수용성 합성 윤활유는 물에 잘 녹을 뿐 아니라 사용 후 처리가 쉬우므로 지용성 윤활유 대신 수용성 윤활유가 많이 사용되고 있어 이에 대한 새로운 물질의 합성과 특성 연구가 많이 이뤄지고 있다. 이에 본 연구에서는 여러 종류의 수용성 합성 윤활유 중에서 에스테르 물질 합성 윤활유의 합성과 그 특성에 대해 연구한다. 중심단어 : 수용성 윤활유, 에스테르 물질, 합성, 특성 In order to study the properties of aqueous lubricants, an ester compound was synthesized at various reaction conditions. The oleic acid and the copolymer of ethylene oxide and propylene oxide was used as reactants. The products were detected by IR-spectrometer.