• 한국전기전자재료학회논문지
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• 제17권1호
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• pp.70-74
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• 2004

We investigated transmittance, surface characteristics, and resistivity according to bending of ITO(indium tin oxide) film with four other multi -harrier film). Transmission data of ITO film with four ITO films showed there was about large 90％ transmission above 550nm wavelength at three multi-barrier structures. But, both-side hard coated structure showed relatively low 75％ transmission above 550nm wavelength. And, surface images measured from SEM (scanning electron microscope) showed both-side hard coated structure have a tendency of more roughness. Also, resistivity change of four other multi-barrier film showed there was the lowest change at one-side hardcoated structure. Subsequently, with result of resistivity change according to position, we knew the resistivity change of the center increased rapidly than that of the edge.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2003년도 춘계학술대회 논문집 디스플레이 광소자분야
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• pp.177-180
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• 2003

We investigated transmittance, surface characteristics, and resistivity according to bending of ITO(indium tin oxide) film with four other multi-barrier film. Transmission data of ITO film with four ITO films showed there was about large 90% transmission above 550nm wavelength at three multi-barrier structures. But, both-side hard coated structure showed relatively low 75% transmission above 550nm wavelength. And, surface images measured from SEM(scanning electron microscope) showed both-side hard coated structure have a tendency of more roughness. Also, resistivity change of four other multi-barrier film showed there was the lowest change at one-side hardcoated structure. Subsequently, with result of resistivity change according to position, we knew the resistivity change of the center increased rapidly than that of the edge.

• 대한화장품학회:학술대회논문집
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• 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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• pp.765-779
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• 2003

Physiological lipid mixtures comprised of cholesterol, ceramide and free fatty acid better maintain epidermal homeostasis and have been recently used for dermatoses induced by skin barrier damage, for example for atopic dermatitis and xerotic skin. Itching and dry atopic dermatitis of the skin may be related to altered skin barrier function. In a previous study, the use of multi-lamellar emulsion (MLE), which is a lipid mixtures containing cholesterol, pseudoceramide and free fatty acid, has been shown to accelerate the recovery of the epidermal permeability barrier. In this study, we assessed the efficacy of MLE compared with a currently used anti-itch moisturizer (AIM), the active ingredients of which are menthol and camphor, on barrier recovery after barrier disruption. To clarify the effect of MLE and AIM after acute barrier perturbation, we measured the relation between transepidermal water loss (TEWL) and the barrier recovery rate at 3, 6, 24, and 48 hours after tape stripping hairless mice and then observed changes in the stratum corneum (SC), including the intercellular lipid structure and secretion of lamellar bodies, by electron microscopy. MLE treated skin recover skin barrier function more rapidly, and AIM treated skin delayed barrier repair. Morphological changes in the epidermis, of MLE treated skin revealed well-conserved lipid multi-lamellar structures at 24 h after tape stripping, whereas AIM treated skin showed altered lamellar bilayers within the SC interstices at 48 h. In addition, MLE treated skin showed an increase in the number of LBs and in their secretions and a decrease in the number of SC layers versus AIM treated skin. These results suggest that MLE may accelerate the production of an epidermal permeability barrier in hairless mice by increasing the number and secretion of LB and improve the dryness and itch associated with an altered epidermal permeability barrier.

• 대한화장품학회지
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• 제33권4호
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• pp.227-230
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• 2007

최근 기능성화장품과 피부관련 의약품 분야에서 multi-lamellar와 liquid crystal의 구조가 커다란 관심을 끌고 있다. 결합수와 고정된 유상을 함유하는 multi-lamellar 구조는 피부의 세포간지질의 lamellar 구조의 재건과 보습을 유지하는 작용으로써 보습기능이나 장벽기능의 복구에 우수하며, 이 지질들은 각질층에 침투하여 유지된다. 본 연구에서 고급 지방 알코올, 레시틴, 콜레스테롤을 사용하여 제조한 bio-mimic liquid crystal emulsion (BLCE)의 피부장벽 기능을 측정하였고 일반적인 계면활성제와 세포독성을 비교하였다.

• 한국지하수토양환경학회지:지하수토양환경
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• 제21권1호
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• pp.1-5
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• 2016

Capillary barriers, consisting of relatively fine-over-coarse materials, have been suggested as an alternative to traditional compacted soil covers. So, We were analysed to capillary barrier effect according to five cases of multi-layer cover systems. Water balance simulation was conducted with unsaturated flow model HELP to assess unsaturated hydraulic parameters such as hydraulic conductivity, climate affecting the performance of capillary barriers. Simulation were conducted for 5 Cases in the Ulsan area. Result of simulation indicated that three cases was formed unsaturated condition and capillary barrier effect.

• 방송공학회논문지
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• 제17권3호
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• pp.491-502
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• 2012

평판 디스플레이 장치에서 입체 영상을 느낄 수 있도록 시차 장벽 혹은 렌티큘러 방식의 입체디스플레이 장치가 개발되었다. 이 디스플레이 장치를 통하여 입체 영상을 볼 수 있도록 하기 위해서는 디스플레이 장치에 출력되는 영상이 다중 시점에서 촬영한 영상으로부터 여러 부표본화 방법을 통하여 하나의 영상으로 재생성하여야 한다. 기존에 많은 부표본화 방법들은 크로스 토크를 줄이기 위한 노력을 많이 하였다. 본 논문에서는 이와 다르게 시차 장벽 기반의 입체 디스플레이 장치를 제조하는 과정에서 발생할 수 있는 시차 장벽의 오정렬에 대한 문제를 다루고자 한다. 사선형 시차 장벽 기반의 입체 디스플레이 장치에 사용자의 위치와 상관없이 입체적으로 보일 수 있도록 하기 위하여 시차 장벽의 기울기와 개구부의 크기, 디스플레이 장치와 사용자간의 거리를 고려하여 다중 시점에서 획득된 영상을 상호 배치하여 하나의 다중 시점 영상으로 생성하는 방법을 제안한다.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제15권3호
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• pp.9-20
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• 2009

Today, as proved in many foreign developed countries, the concept of 'Aging in Place' is the most desirable goal of welfare policy for an aging society. While multi-family housing is the most representative form of residence in Korea, it has not actively reflected convenient space lay-out for the elderly and barrier-free designs. As a foundation for the planning of elderly-friendly multi-family housing, this study suggested the comparative analysis of the five domestic design guidelines for elderly housing so as to apply the elderly-friendly flexibility for apartment units. In result, the most importantly treated items and factors of the silver house guidelines were analyzed, and based on which ten unit houses of domestic apartment housing were evaluated in order to find out the most barrier-like spaces and factors for the present domestic apartment housing to reflect flexibility as elderly housing. Finally, the way to resolve the problem was suggested as a conclusion.

• Progress in Superconductivity
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• 제1권1호
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• pp.51-55
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• 1999

A Ni/Ag/Stainless steel 310S(SS310S) multi-layer sheet has been fabricated by a combination of vacuum brazing, cold rolling and texture annealing processes. After heat-treating the thin Ni/Ag/SS310S multi-layer sheet at $900^{\circ}C$ for 2h, development of (100)<001>cube texture on Ni surface was revealed by (111) pole figure. Quantitative chemical analysis was made by EPMA for the cross-section of the Ni/Ag/SS310S multi-layer sheet. EPMA results showed that Ag diffusion into the Ni layer, which may suppress the cube texture development, was negligible. A small amount of Cr atoms were detected in the Ni layer. It showed that Ag can be used as a chemical barrier of alloying element atoms in Ni layer for the Ni/Ag/SS310S multi-layer sheet and a strong cube texture was developed for the Ni layer in the Ni/Ag/SS310S multi-layer sheet.

• 동력기계공학회지
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• 제17권5호
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• pp.44-51
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• 2013

This paper proposes and analyzes recycling of optical phonons emitted by nonradiative decay, which is a major thermal management concern for high-power light emitting diodes (LED), by introducing an integrated, heterogeneous barrier cooling layer. The cooling is proportional to the number of phonons absorbed per electron overcoming the potential barrier, while the multi-phonon absorption rate is inversely proportional to this number. We address the theoretical treatment of photon-electron-phonon interaction/transport kinetics for optimal number of phonons (i.e., barrier height). We consider a GaN/InGaN LED with a metal/AlGaAs/GaAs/metal potential barrier and discuss the energy conversion rates. We find that significant amount of heat can be recycled by the barrier transition cooling layer.

• 한국안전학회지
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• 제34권1호
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• pp.40-44
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• 2019

Experimental studies have been carried out to investigate characteristics of gas explosion using a multi layered water gel barrier in a vented explosion chamber. The chamber is consisted of 1600 mm in length, with a square cross-section of $100{\times}100mm^2$. The gel concentration of inner layer of MLWGB ranged from 10% to 90% with intervals of 10% by weight of gel. Displacement of the MLWGB was photographed with a measured using a high-speed video camera, and pressure development was measured using a data acquisition system. It was found that MLWGBs with 10 ~ 20% inner layer concentrations were ruptured during the explosions. As the concentrations of inner layer increased from 30% to 90%, the barriers were not ruptured. As the gel concentrations of the inner layer increased, the displacement increased toward the chamber exit and the pressure decreased for the ruptured barriers. It was found that the pressure attenuation obtained from the MLWGB was higher than that of the single water gel barrier. For the cases of non-ruptured barriers, the pressure inside the chamber less increased with increasing gel concentrations of the inner layer. It was also found that the displacement moved back into the chamber for non-ruptured MLWGBs, and it was sensitive to the gel concentrations.