• 제목/요약/키워드: Film Education

검색결과 480건 처리시간 0.025초

Film Cassette의 세균 오염도와 소독에 관한 연구 (A Study on Contamination and Disinfection of Film Cassette)

  • 권대철;정경모;최지원
    • 대한방사선기술학회지:방사선기술과학
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    • 제23권2호
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    • pp.55-61
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    • 2000
  • In July 2000, a bacteria infection on film cassette contact surface was examined at the diagnostic radiology department of the S. hospital. The objective of this study was to assess the contamination level on film cassette contact surface as a predictor of patient to prevent from nosocomial infection. The study showed that the laboratory result was identified non-pathologic bacterial in the four different cassette size of the contact surface. The study concludes that presence of a bacterial infection wilt prevent a using antiseptic technique on film cassette contact surface. Also the education of nosocomial infection for radiographer will be required.

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결정질 실리콘 태양전지를 위한 고주파 PECVD SiNx막 연구 (A Study on Silicon Nitride Films by high frequency PECVD for Crystalline Silicon Solar Cells)

  • 김정환;노시철;최정호;정종대;서화일
    • 반도체디스플레이기술학회지
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    • 제11권2호
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    • pp.7-11
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    • 2012
  • SiNx films have been wildly used as anti-reflection coatings and passivation for crystalline silicon solar cells. In this study, the SiNx films were deposited by using high frequency (13.56MHz) PECVD and optical & passivation properties were investigated. The RF power was changed in a certain range for the film deposition. Then, the refractive index, etch rate, minority carrier lifetime and cell efficiency were measured to study the properties of the film respectively. The optimal deposition conditions for application to crystalline silicon solar cells were proposed as results of the study. Finally, the best cell efficiency of 16.98% was obtained from the solar cell with the SiNx films deposited by RF power of 550W.

Pd 박막 시료의 제작 조건이 수소 흡수-방출 동역학에 미치는 영향에 관한 연구 (The effect of Pd film evaporation condition on the kinetics of hydrogen absorption-desorption)

  • 엄대현;유정국;조영신
    • 한국수소및신에너지학회논문집
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    • 제9권3호
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    • pp.127-133
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    • 1998
  • 각각 다른 기판온도에서 진공 증착법으로 제작된 Pd 박막들의(두께 ) 수소 흡수-방출 동역학을 실험하였다. 상, 온도영역에서 수소기체를 흡수-방출 시키면서 정방향과 역방향 활성화에너지를 구하고 반응엔탈피를 구하였다. 기판의 온도가 상온인 시료는 정반응 활성화에너지가 kcal/mol H이고 역방향은 kcal/mol H 반응엔탈피는 -2kcal/mol H였다. 기판의 온도가 인 시료는 정방향 활성화에너지 kcal/mol H 이고 역방향 활성화에너지 kcal/mol H였다. 기판의 온도가 상온인 시료의 구조적 치밀성, 온도변화에 따른 비저항 값의 변화율 등을 측정해 보았을 때 기판의 온도가 상온인 시료에 비하여 더 안정된 상태였지만 활성화 에너지의 오차값이 크게 얻어졌다.

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Effects of Al2O3 Coating on BiVO4 and Mo-doped BiVO4 Film for Solar Water Oxidation

  • Arunachalam, Maheswari;Yun, Gun;Lee, Hyo Seok;Ahn, Kwang-Soon;Heo, Jaeyeong;Kang, Soon Hyung
    • Journal of Electrochemical Science and Technology
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    • 제10권4호
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    • pp.424-432
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    • 2019
  • Planar BiVO4 and 3 wt% Mo-doped BiVO4 (abbreviated as Mo:BiVO4) film were prepared by the facile spin-coating method on fluorine doped SnO2(FTO) substrate in the same precursor solution including the Mo precursor in Mo:BiVO4 film. After annealing at a high temperature of 450℃ for 30 min to improve crystallinity, the films exhibited the monoclinic crystalline phase and nanoporous architecture. Both films showed no remarkably discrepancy in crystalline or morphological properties. To investigate the effect of surface passivation exploring the Al2O3 layer, the ultra-thin Al2O3 layer with a thickness of approximately 2 nm was deposited on BiVO4 film using the atomic layer deposition (ALD) method. No distinct morphological modification was observed for all prepared BiVO4 and Mo:BiVO4 films. Only slightly reduced nanopores were observed. Although both samples showed some reduction of light absorption in the visible wavelength after coating of Al2O3 layer, the Al2O3 coated BiVO4 (Al2O3/BiVO4) film exhibited enhanced photoelectrochemical performance in 0.5 M Na2SO4 solution (pH 6.5), having higher photocurrent density (0.91 mA/㎠ at 1.23 V vs. reversible hydrogen electrode (RHE), briefly abbreviated as VRHE) than BiVO4 film (0.12 mA/㎠ at 1.23 VRHE). Moreover, Al2O3 coating on the Mo:BiVO4 film exhibited more enhanced photocurrent density (1.5 mA/㎠ at 1.23 VRHE) than the Mo:BiVO4 film (0.86 mA/㎠ at 1.23 VRHE). To examine the reasons, capacitance measurement and Mott-Schottky analysis were conducted, revealing that the significant degradation of capacitance value was observed in both BiVO4 film and Al2O3/Mo:BiVO4 film, probably due to degraded capacitance by surface passivation. Furthermore, the flat-band potential (VFB) was negatively shifted to about 200 mV while the electronic conductivities were enhanced by Al2O3 coating in both samples, contributing to the advancement of PEC performance by ultra-thin Al2O3 layer.

한국단편애니메이션을 활용한 주제중심 통합교육 모형 연구 (A Study on the integrated art & culture education using short animations of Korea)

  • 김재웅;고민정
    • 만화애니메이션 연구
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    • 통권20호
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    • pp.15-29
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    • 2010
  • 문화예술교육은 전 국민의 문화예술향유를 통한 삶의 질 향상과 국가의 문화 역량 강화를 지향하는 교육으로서, 지금까지 다양한 프로그램들을 통해 그 범위가 확산되어 왔다. 그러나 실제로 학교수업을 통해 진행되는 학교문화예술교육은 표면적이고 기능적인 교육에 그치는 등 수업 내용과 방식에서 한계를 보이고 있다. 학교문화예술교육이 원래의 목적을 달성하고 학교 안에서 체계적이고 안정적인 부분으로 자리 잡기 위해서는 양적인 성장에 더하여 질적 심화의 측면을 고려해야 할 시점에 와있다. 이 논문에서는 학교문화예술교육의 질적 제고와 활성화를 위해, 초등학교 교육과정에서 한국단편애니메이션을 활용해서 기존 교과와 문화예술교육을 통합할 수 있는 문화예술통합교육 모형을 개발하였다. 단편애니메이션은 감독 개개인의 세계관과 개성, 개인의 삶과 사회적 관계 및 역사적 성찰에 이르기까지 다양한 주제를 독창적인 미학으로 표현해내고 있어, 풍부한 미적 경험과 더불어 주제중심통합교육을 위한 단초를 제공한다. <오늘이>(2003)는 제주도의 원천강 본풀이라는 신화적 소재와 민화라는 전통적 소재를 현대적으로 재해석한 작품이다. 이 작품은 국어(언어지능)와 도덕(대인/자성지능)을 통합적으로 구성하여 자신의 생각을 글, 만화, 그림으로 표현하게 함으로써 언어지능과 공간지능을 발휘할 수 있다. 이러한 문화예술통합교육 모델을 통해 개별교과 로 이루어지는 분과교육과정의 한계를 극복하여 정규 교과의 경계를 확장해서 전반적인 교육의 질을 개선하고자 한다.

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특수형태근로 종사자의 작업조건 및 안전보건 특성에 관한 연구 - 퀵서비스 등 5개 직종을 중심으로 - (Research on the Characteristics of Working Conditions and Occupational Safety and Health in the Special form Workers)

  • 이관형
    • 한국안전학회지
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    • 제29권4호
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    • pp.147-152
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    • 2014
  • The purpose of this study, the overall occupational safety and health status and identify the characteristics of the workers engaged in the field of quick services, substitute driving services, home delivery, caregiver, film and television arts, to take appropriate measures to prevent industrial accidents, profession and working environment, safety recognition and education, and safety activities, accident experience and job stress survey. Survey using a structured questionnaire, 846 people directly interview research. Safety consciousness level of himself or herself was "fair level" of 3.19 points and those of colleagues and the general public were evaluated to be low as 2.84 points and 2.54 points, respectively. During the last 12 months, 21.3% of total workers in 5 job categories have received an industrial safety health education for job-related accident or disease and 87.6% of workers engaged in caregiver have received an industrial safety health education for job-related accident or disease. The proportions for delivery worker, substitute driving service and quick service/cultural art were 26.4%, 12.1% and below 10%, respectively. Frequency of having received an education was 5.7 days on average and education hour was 9.2. Regarding cases of having experienced job-related accident or having been exposed to job-related disease over the past 1 year, 17.0% of total respondents have experienced accident and 21.3% have experienced job-related disease. Preventive education for occupational safety is required to be expanded and strengthened. Except caregiver, the proportion of having received an information and education for safety rules and hazardous factors. Safety education is urgently required in order to prevent and reduce accident. Safety and health guideline is required to be developed and disseminated in order to prevent accident in advance.