• 제목/요약/키워드: surface qualities

검색결과 261건 처리시간 0.029초

Indium tin oxide films grown on polymer substrate by a low-frequency magnetron sputtering method

  • Jung, Sang-Kooun;Kim, Hong-Tak;Lee, Do-Kyung;Cho, Yong;Park, Lee-Soon;Park, Duck-Kyu;Sohn, Sang-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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    • pp.992-995
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    • 2004
  • In this study, we have grown indium tin oxide (ITO) thin films by using a low-frequency (60${\sim}$300 Hz) magnetron sputtering method and investigated characteristics of ITO thin films deposited on polyethersulfone substrates. The experimental results show that the films have good qualities in surface morphology, transmittance, and electrical conduction.

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현장가공이 가능한 영구거푸집 개발에 관한 실험적 연구 (An Experimental Study on The Development of Fold Concrete Permanent Form producible at Field)

  • 김형남;최창기;김우재;김성식;정상진
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1999년도 학회창립 10주년 기념 1999년도 가을 학술발표회 논문집
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    • pp.805-808
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    • 1999
  • According to the results of this research, Production of Fold Concret Permanent-Form, was found to be possible by Concrete. The FCP-Form (Fold Concret Permanent-Form) Concrete had Compress strength 300kg/$\textrm{cm}^2$ and banding strength 120kg/$\textrm{cm}^2$. FCP-Form Model was made by the result of the first research. There was no mimute-crack on beam form and The outer surface of form was very smooth, and Those qualities it were made possible hand-made by experiment. With these results, The Production of FCP-Form seemed possible. In the banding load test, P-S showed increase of maxim load 12% than P-R. At the first stage of minute crack, under continuing loading size of crack increased. These phenomena seemed to be based on contribution of stress of inner bars in FCP-Form. In the test of defection. P-S shower about 10% banding load increase than P-R. FCP-Form Concrete was found to be efficient in compressibleness, defection, safety and use of material.

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4 홀 Micro Multi Cell Tube 의 압출공정 해석 및 기계적 특성 평가 (Extrusion process Analysis and Evaluation of Mechanical property for Micro Multi Cell Tube with 4 hole)

  • 이정민;김병민
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2004년도 추계학술대회 논문집
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    • pp.397-400
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    • 2004
  • The direct extrusion with porthole die can produce condenser tube which has the competitive power in costs and qualities compared with the existing conform extrusion. In general, porthole die extrusion has a great advantage in the forming that produces the hollow sections difficult to produce by conventional extrusion with a mandrel on the stem. Especially, condenser tube manufactured by porthole die belongs to sophisticated part and demands tighter dimension tolerance and higher surface finish than any other part. In order to confirm the general of porthole die extrusion, we perform the 3D FE analysis of hot porthole extrusion in non-steady state by using DEFORM 3D and investigate a pattern of elastic deformation for porthole die through the stress analysis using ANSYS 5.5 during extrusion process.

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참게육 첨가 맛두부의 조직 및 관능 특성 (Sensory and Texture Properties of Seasoned Tofu Containing Freshwater Crab Meat)

  • 류홍수;신은수;장대흥
    • 한국수산과학회지
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    • 제42권3호
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    • pp.190-196
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    • 2009
  • To optimize the mixing ratio of ingredients for optimal sensory qualities of seasoned tofu, a response surface methodology with a central composite design was performed on tofu containing freshwater crab meat (TCM). Using the desirability function technique, the optimal formulation was determined to be 3.67 g of freeze dried meat, 5.54 g of garlic powder, and 2,120 mL of soymilk. In the texture profile analysis, tofu prepared using the optimal ingredient ratio had a higher hardness, cohesiveness and gumminess than commercial tofu but TCM value for adhesiveness, springiness and chewiness were lower. However, the texture properties of TCM were not significantly different than those of commercial tofu.

비접촉 레이저 광센서의 성능 향상을 위한 센서보정에 관한 연구 (Development of a Sensor Calibration to Enhance the Performance of a Non-contact Laser Optical Sensor Unit)

  • 서평원;유영기;오춘석;변종환
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년 학술대회 논문집 정보 및 제어부문
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    • pp.579-581
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    • 2006
  • Flat panel image display devices such as TFT LCD and PDP have required more large area and high quality control components. To control the qualities of the components, measurements of the flatness of a plate glass has been required. In order to measure the shape of the specular objects, Non-Contact Optical Sensor using Hologram laser unit was proposed. The sensor has a optical system that is composed of a Hologram laser and objective lens. The temperature of the sensor body is controlled by TEC(Thermoelectric Cooler) to maintain the same wavelength of the diode laser. In this research, we proposed the calibration scheme to make sensor real time measuring sensor. From the experimental results we see that the proposed sensor unit can measure the position of the glass surface in rial time.

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Al 5052, 6061합금에 대한 플라즈마-GMA 용접공정특성 평가 (Process Evaluation of Plasma-GMA Welding for Al 5052 and 6061 Alloy)

  • 김철희;안영남;최진강;이세헌
    • Journal of Welding and Joining
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    • 제28권6호
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    • pp.58-62
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    • 2010
  • In this study, the bead-on-plate welding were conducted by using GMA welding and plasma-GMA welding on Al 5052 and, Al 6061 plates. For these processes, the maximum welding speeds for full penetration were compared, and various weld qualities such as bead appearance, cross-section, cracks and porosities were examined. Faster welding speed, cleaner bead surface and more stable drop transfer could be achieved by plasma-GMA welding, compared with GMA welding.

발효유제품의 유단백질 기능성 연구 동향 (Functional Properties of Milk Protein in Fermented Milk Products)

  • 이원재
    • Journal of Dairy Science and Biotechnology
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    • 제25권2호
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    • pp.29-32
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    • 2007
  • An understanding functional properties and molecular interactions of milk proteins was critical to improve qualities of fermented dairy products including yogurts and cheeses. Extensive rearrangements of casein particles were important factors to enhance whey separation in yogurt gel network. The use of high hydrostatic pressure treated whey protein as an ingredient of low fat processed cheese food resulted in the production of low fat processed cheese food with acceptable firmness and enhanced meltabilities. Milk protein-based nano particles produced by self-association of proteins could be better nutrient delivery vehicle than micro particle since particle size reduction in nano particles could lead to increased residence time and surface area available in GI tract.

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Fabrications of YBCO Coated Conductors Using Tilted Single Crystalline Nickel Tapes

  • Kim, Ho-Sup;Yoo, Ja-Eun;Jung, Kook-Chae;Youn, Do-Jun
    • Progress in Superconductivity
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    • 제2권1호
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    • pp.33-38
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    • 2000
  • Ni tapes were textured by taking advantage of their secondary recrystallization. The obtained 18cm long tapes had textures of single crystalline qualities with their [001] axes tilted with respect to the surface and their [010] axes parallel to the rolling direction. The reproducibility of this texturing was checked by taking statistics on the crystal orientations of 24 Ni tapes. $YBCO/CeO_2/YSZ/CeO_2$ films grown on the Ni tape had the same crystalline orientations. Magnetic field dependent I-V relations were measured on a 5cm section of the tape. $J_c$ defined by $20{\mu}V/mm$ criterion was $1.5\times10^5A/cm^2$ at 77K under zero field and was reduced by $\sim$50% under the applied magnetic field of 5T.

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현장 가공이 가능한 모르터 영구거푸집의 부착강도 증진을 위한 실험적 연구 (An Experimental Study on Bond Strength Progress of Fold Mortar Permanent Form of Manufacturing at Field)

  • 김우재;김성식;임남기;김영희;정상진
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2000년도 봄 학술발표회 논문집
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    • pp.853-858
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    • 2000
  • According to the results of this research, Production of Fold Mortar Permanent - Form was found to be possible by Mortar. Th FP-Form (Fold Permanent-Form) mortar had compress strength 580kgf/$\textrm{cm}^2$. FP-Form model was made by the result of the first research. There was no minute-crack on beam form and the outer surface of form was very smooth, and those qualities it were made possible hand-mad by experiment. This study is about bond strength progress of FP-Form that developed for the form work rationalization and systematization. The result of this study follows; (1) Fluidity and strength development of mortar which used for FP-Form are satisfied (2) After study on getting good bond strength progress, inside-uneven type presents the better suitableness, and wire netting V-type presents the better shear strength.

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발효 유제품에서의 유단백질 기능성 연구 동향 (Functional Properties of Milk Protein in Fermented Milk Products)

  • 이원재
    • 한국유가공학회:학술대회논문집
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    • 한국유가공기술과힉회 2007년도 추계학술발표대회
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    • pp.31-37
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    • 2007
  • An understanding functional properties and molecular interactions of milk proteins was critical to improve qualities of fermented dairy products including yogurts and cheeses. Extensive rearrangements of casein particles were important factors to enhance whey separation in yogurt gel network. The use of high hydrostatic pressure treated whey protein as an ingredient of low fat processed cheese food resulted in the production of low fat processed cheese food with acceptable firmness and enhanced meltabilities. Milk protein-based nano particles produced by self-association of proteins could be better nutrient delivery vehicle than micro particle since particle size reduction in nano particles could lead to increased residence time and surface area available in GI tract.

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