• Title/Summary/Keyword: Exposing

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The U-type Model on Ag Doping effect in Amorphous Chalcogenide thin films (비정질 칼코게나이드박막으로서의 Ag 도핑효과에 대한 U-형 모델)

  • 김민수;이현용;정홍배
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.50-53
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    • 1995
  • In this paper we have obtained property by considering the change of optical energy gap as a function of photo-does for exposing photo on Ag/a-Se$\sub$75/Ge$\sub$25/ thin films. This U-type property was obsered for all photo-exposing except for blu-pass filtered Hg lamep. Expecially, very large band shift(~0.3[eV]) is obtained by exposing He-Ne laser (6328[${\AA}$]). It is impossible to explain this property for exposing He-Ne and semiconductor laser through DWP model, which was explained for photo-exposing above the energy gap. Therefore we suggest a new modified model of DWP model for Ag/a-Se$\sub$75/Ge$\sub$25/ bilayer thin films.

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Reconstruction of Soft Tissue Defect, Exposing Achilles Tendon by Using Gracilis Muscle Free Flap and Skin Graft (박근 유리피판술과 피부이식술을 이용한 아킬레스건이 노출된 창상의 재건)

  • Kim, Han Koo;Gok, Nak Soo;Kim, Woo Seob;Kim, Seung Hong
    • Archives of Plastic Surgery
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    • v.34 no.2
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    • pp.217-221
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    • 2007
  • Purpose: Reconstruction of the soft tissue defect exposing Achilles tendon is a formidable challenge because of the paucity of soft tissue and relatively poor blood supply. This article describes the reconstruction of soft tissue defect exposing Achilles tendon using gracilis muscle free flap and split-thickness skin graft. Methods: From 2000 to 2005, four patients with soft tissue defect exposing Achilles tendon and infection were operated using gracilis muscle free flap and split-thickness skin graft. The defect size ranged from 3.5 to 5cm wide and 6.5 to 8cm long. The mean postoperative follow-up was twenty months. Results: All the flaps were survived without necrosis and infection. We obtained the satisfactory results with good functional and aesthetical outcomes. All cases showed good results with the characteristics of a relatively thin flap without additional debulking procedure. Conclusion: Gracilis muscle free flap with split thickness skin graft could be a good option for reconstruction of soft tissue defect of posterior ankle, exposing Achilles tendon with minimal morbidity of the donor site.

Dyeing of Silk with Lichen Extract (지의류 추출염액에 의한 견섬유 염색)

  • 이전숙;이득영
    • Textile Coloration and Finishing
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    • v.11 no.6
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    • pp.43-50
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    • 1999
  • Lichen had been used as dyestuffs before the discovery of synthetic dyes in Europe and by American Indians. To investigate the dyeability of Korean native lichens, 10 kinds of lichen were collected and colorants were extracted from them by boiling in water and fermenting in ammonia water. Silk fabrics were dyed with lichen extract, then the colour differences of dyed silk fabrics were measured before and after color fastness test. The most part of the lichen extracts(Fc, Hh, Me, Pl, Xm, Pr, Cj, Ld, Ry) dyed silk yellowish or reddish brown. The range of colors were 2.4Y 6.5∼10YR 6/7. Pa extract dyed silk purple(1.25RP 5/6). Color differences of laundered specimen with the silk before laundering were very small, but color of the dyed silks after exposing to light showed big differences with the specimen before exposing to light. The colors of the silks dyed with lichens changed from yellowish or reddish brown to greenish brown by laundering and by exposing to light. But the specimen dyed Pa extract changed from purple to blueish purple by laundering and reddish purple by exposing to light.

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The Effect of Brand Exposure and the Brand Sensitivity of Consumers on the Attitude of the Private Brand Products of Fashion Retailers (패션제조업체의 브랜드 노출여부와 소비자의 브랜드 민감성이 패션유통 PB상품 브랜드 태도에 미치는 영향)

  • Kim, Jeong-Hee;Lee, Jin-Hwa
    • Journal of the Korean Society of Clothing and Textiles
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    • v.34 no.3
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    • pp.459-471
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    • 2010
  • This study examines the exposure effects of the brand of fashion manufacturers on the brand attitude of consumers towards the private brand of fashion retailers. In addition, it investigates the exposure effects of the brand of fashion manufacturers on the brand attitude of consumers towards the private brand of fashion retailers based on the sensitivity of consumers as related to the brand. Data are analyzed by a reliability analysis, a factor analysis, the correlation analysis, t-test, and one-way ANOVA. The main results are summarized as follows. First, when the private brand of fashion retailers (Perry Jensen) was shown to customers, three groups ('PB without exposing the brands of fashion manufactures', 'PB with exposing Galaxy', and 'PB with exposing Parkland') revealed statistically significant differences in consumer purchase intentions as well as brand preferences to the PB products of fashion retailers. The group of 'PB with exposing high-sensitive Galaxy group' showed an overall higher brand attitude than the other two groups-'PB without exposing the fashion manufactures' brands' and 'PB with exposing low-sensitive Parkland'. Second, in comparison with the effects of the brand sensitivity of each group, the group with the higher brand sensitivity showed statistically significant browsing intension as well as purchase intention on both brands of fashion manufactures (Galaxy and Parkland).

Preparation of Continuous Silicon Carbide Filament(II) -Photostabilization of Poly(dimethyl-co-methylphenylsilylene) Copolymer Spinning Fiber- (Silicon Carbide 섬유의 제조에 관한 기초연구(II) -Poly(dimethyl-co-methylphenylsilyene) Copolymer Spinning Fiber의 광안정화-)

  • 강두환;염규설
    • Textile Science and Engineering
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    • v.26 no.6
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    • pp.19-25
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    • 1989
  • Photosensitive properties of poly(dimethyl-co-methylphenylsilylene) copolymer(PDMPS) was investigated by the residual film method of measuring the change of solubility of PDMPS before and after exposure to light. The samples coated on quartz plates were exposed to light under various conditions and steeped in the same solvent as used for coating, and then the yield of residual film(W/W0) was measured. The yield of residual film was affected by the molecular weight of PDMPS copolymer, types of photosensitizer, and their concentration. The most effective photosensitizer for PDMPS copolymer among those used here was rosebengal. And also, the photocrosslinking mechanism of PDMPS copolymer was studied by infrared an d UV absorption spectra. The stability of PDMPS spinning fiber by exposing to light was investigated by the change of the solubility of spun fiber after exposing to light was investigated by the change of the solubility of spun fiber after exposing to light.

A Study on Substrate Stage Temperature (기판스테이지 온도에 관한 연구)

  • Kim, Sun-Ki;Lee, Woo-Young;Kang, Heung-Suk
    • Journal of the Semiconductor & Display Technology
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    • v.5 no.4
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    • pp.35-40
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    • 2006
  • This paper shows that the effect of exposing on the top area and a solution which using a water circulation system. Semiconductor substrate stage is made from Aluminum and is repeated the sequence of exposing (150), turning OFF shutter, taking 30 sec. interval at the top area of stage. So the temperature of substrate temperature rises continuously. On this, we made a waterway at the inner part of the substrate stage and operated a water circulation system. We measured the temperature of a substrate stage surface with a thermocouple attached to the substrate stage. To analyze the top area's temperature, we used Analysis Program ANSYS for analysis and 3D CAD program Solid-Works for modeling.

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Ag/a-$Se_{75}$$Ge_{25}$박막의 Ag Doping Mechaism 해석[I]

  • 김민수;이현용;정홍배;이영종
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.113-115
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    • 1994
  • We considered the ion and photo-induced properties as a function of wavelength by exposing the light over the band gap of a-Ag/a-$Se_{75}$$Ge_{25}$ and the low-energy defocused $Ga^{+}$ ion beam on Ag/a-$Se_{75}$$Ge_{25}$ thin film. This film acts as a negative resist for photo or ion beam lithography. We observed that the absorbance coefficient decreased with increasing the photo-exposing time and exposing the ion beam. The bandgap shifts toward longer wavelength called a "darkening effect" are observed in the films exposed to both photons and ions. We suggest that a primary step in the Ag layer and a secondary step is in a-$Se_{75}$$Ge_{25}$ film layer.

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A Study on the Expressivity of Covering and Exposing of Architecture Surface after Modern Architecture - Focused on the Tectonic Concept through Semper's Theory "Dressing" - (근·현대 건축표면의 가림과 드러냄의 표현성에 관한 연구 - 젬퍼의 피복론을 통한 텍토닉개념을 중심으로 -)

  • Oh, Sang-Eun
    • Korean Institute of Interior Design Journal
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    • v.23 no.3
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    • pp.29-38
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    • 2014
  • This paper is to analysis covering and exposing elements through surface in the spirit of the time through the meaning of relationship between structure and symbol(ornament) in the theory of dressing of Gottfrid Semper. In other words, The purpose is to illuminate how complementary tectonic between structure and symbolic of an architecture surface is expressed in accordance with the biased required conditions relating with the paradigm of the era. The advancement of the new method of tectonic and the new aesthetic taste have a deep relation with the reconsidering the dichotomy classification discussing a dominant position between structure and symbol(ornament). Expression of surface representing the era comes across the combined interpretation of technology, structure, and the non-physical culture's art of the community and the era.

A STUDY OF PHYSICAL PROPERTIES OF COMPOSITE RESIN POLYMERIZATION WITH ARGON LASER (아르곤 레이저에 의한 복합레진의 중합시 물성 변화에 관한 연구)

  • Kim, Deok;Min, Byung-Soon;Choi, Ho-Young;Park, Sang-Jin;Choi, Gi-Woon
    • Restorative Dentistry and Endodontics
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    • v.23 no.1
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    • pp.1-19
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    • 1998
  • After polymerizing composite resin with argon laser and visible light, four test, to be concretely, measurement of compressive strength using Instron testing machine, surface microhardness using Rockwell hardness tester, quantitative analysis of residual monomer using HPLC and analysis of degree of conversion using FTIR, were accomplished. Test groups were a sort of specimen with 3mm diameter, 4mm thickness for measuring compressive strength, two sort of specimen with 7mm diameter, 2mm and 3mm thickness for measuring surface microhardness, quantitative analysing of residual monomer after curing and measuring the degree of conversion, each were divided by six groups according to the condition of light exposure. In case of argon laser, in 1.0W and 0.5W output, the exposure time for specimen were 5 sec, 10 sec respectiyely. In case of visible light, the exposure time for specimen were 20 sec, 40 sec respectively. The test were accomplished and following results were obtained. 1. Compressive strength of composite resin was the highest in the group of 1 W output, exposing for 10 sec with argon laser, followed by the group of 0.5W, exposing for 10 sec with argon laser, the group of exposing for 40 sec with visible light. But there were statistically no significant difference between these three groups(p>0.05). 2. Surface microhardness of composite resin wasn't significantly affected by light curing conditions. 3. BIS-GMA within residual monomer was least detected in the group of exposing for 40 sec. TEGDMA was least detected in the group of 1 W output, exposing for 10 sec with argon laseboth 2mm and 3mm thickness specimen. 4. The degree of conversion of all groups in the 2mm thickness specimen were more than 50%, similar to each other but in the group of 1W, exposing 10 sec with argon laser the degree of conversion was highest in the 3mm thickness specimen. 5. Argon laser could make composite resin to has similar properties with 25% lesser exposure time than visible light.

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Control of surface anisotropy by exposing linearly polarized ultraviolet light

  • Kim, Kang-Nam;Kim, Jae-Hoon
    • 한국정보디스플레이학회:학술대회논문집
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    • pp.314-316
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    • 2008
  • We examine the surface alignment of liquid crystals (LC's) by a double linearly polarized ultraviolet (LPUV) light expose process. Exposing polarized light induces a surface anisotropy to polyimide (PI) layer surfaces and hence determines the alignment direction. LPUV exposes with angular difference of $45^{\circ}$ between two polarization directions make LC director change.

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