• 한국재료학회:학술대회논문집
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• 한국재료학회 2003년도 춘계학술발표강연 및 논문개요집
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• pp.22-22
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• 2003

• 한국진공학회:학술대회논문집
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• 한국진공학회 2011년도 제41회 하계 정기 학술대회 초록집
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• pp.73-73
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• 2011

We will report a few methods to improve the efficiency and stability in small molecule based organic solar cells, including the formation of bulk heterojunctions (BHJs) through alternative thermal deposition (ATD), the use of a micro-cavity structure and interface modifications. By ATD which is a simple modification of conventional thermal evaporation, the thicknesses of alternative donor and acceptor layers were precisely controlled down to 0.1 nm, which is critical to form BHJs. The formation of a BHJ in copper(II) phthalocyanine (CuPc) and fullerene (C60) systems was confirmed by AFM, GISAXS and absorption measurements. From analysis of the data, we found that the CuPc|C60 films fabricated by ATD were composed of the nanometer sized disk shaped CuPc nano grains and aggregated C60, which explains the phase separation of CuPc and C60. On the other hand, the co-deposited CuPc:C60 films did not show the existence of separated CuPc nano grains in the CuPc:C60 matrix. The OPV cells fabricated using the ATD method showed significantly enhanced power conversion efficiency compared to the co-deposited OPV cells under a same composition [1]. We will also present by numerical simulation that adoption of microcavity structure in the planar heterojunction can improve the short circuit current in single and tandem OSCs [2]. Interface modifications also allowed us to achieve high efficiency and high stability OSCs.

• 컴퓨터교육학회논문지
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• 제7권4호
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• pp.121-129
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• 2004

교육인적자원부(2004)의 이러닝 학습체제 구축을 위한 실태 및 요구조사에 따르면 교수 학습 자료의 질에 대한 심각한 문제가 제기되고 있다(총 4717명 중 1775명 (37.68%) 이 현재 교수 학습 자료의 질적인 문제가 심각하다고 응답하였다). 뿐만 아니라 한국교육과정평가원의 연구(2002)에 따르면 웹 사이트, 기관 소장 자료, 그리고 교사 개인이 서비스하는 자료들 7만 건 중 약 8.7%에 해당하는 자료만이 우수 자료로 평가되었다. 현재 유통 보급되는 교수 학습 자료에 대한 질 관리의 필요성이 대두되고 있으나 이를 뒷받침하는 구체적인 정책적 대안이 제시되고 있지 못한 실정이다. 즉, 체계적으로 교수 학습 자료에 대한 내용적인 질 관리를 할 수 있는 시스템이 개발되어 있지 않다. 본 연구의 궁극적인 목적은 기존 혹은 신규 교수 학습 자료에 대해 내용적 질 관리를 할 수 있는 시스템을 개발하고 적용하는데 있다. 본 연구의 결과로 개발된 교수 학습자료 질 관리 시스템은 16개 시 도를 포함하여 국가 수준의 질 관리 체제 수립을 위한 기초가 될 수 있으며, 뿐만 아니라 교수 학습 자료에 대한 실질적인 질 관리가 이루질 수 있을 것으로 기대한다.

• 한국비블리아학회지
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• 제26권4호
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• pp.5-30
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• 2015

장애인의 고등교육에 대한 관심이 높아지면서 해를 거듭할수록 장애대학생도 증가하고 있지만, 장애대학생의 성공적인 대학생활이 이루어지고 있는가는 별개의 문제로 보아야 한다. 이 연구는 국내 시각장애대학생의 정보접근권 보장과 정보복지 향상을 위해 체계적인 대체자료 지원체계를 마련하기 위한 목적으로 수행되었다. 이를 위해 국내 시각장애대학생을 위한 대체자료 제작 공급체계와 시각장애대학생들의 대체자료 이용 현황과 요구를 분석하였으며, 데이터 수집을 위해 대학 장애학생지원센터 담당자와 시각장애대학생을 대상으로 설문조사를 실시하였다. 국내 시각장애대학생을 위한 대체자료 지원체계 방안으로 1) 국립장애인도서관의 역할 강화, 2) 네트워크 구축을 통한 장애학생지원센터의 역량 강화, 3) 저작권 보호를 위한 기술적 제도적 개선 등을 제안하였다.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2002년도 추계학술발표회
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• pp.386-389
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• 2002

It may be necessary to apply a daily fever to operate the municipal solid waste landfill. The daily cover helps to control nuisance factors such as the escape of odors, dusts and airborne emissions, and can control the population of disease vectors. Also it may be reduce the infiltration of rain, decreasing the generation of leachate and the potential for surface water and groundwater contamination. Because of its usual availability and traditional usage as the municipal solid waste landfill, soil remains as the most common daily cover material. However, soil tends to reduce the volume of dumping waste c;3pacity in the landfill, it also reduces a period of using in the landfill. Therefore, it is necessary to research about Alternative Daily Cover Materials (ADCMs) because of the limitation of landfill sites. Recently, The types of ADCMs are classified into geosynthetics, forms, spray-ons, indigenous materials. In this study, the authors have tested the spray type of Alternative Daily Cover(ADC) using by flyash, alum with cement. The development. of ADCMs will be highly effective in terms of prolongation using landfill.

• 한국표면공학회지
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• 제36권1호
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• pp.48-58
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• 2003

This paper will present an overview of toxicity of hexavalent chromium as well as effort for its replacement by a wide spectrum of alternative materials and technologies. Cr-based materials such as trivalent electrodeposit will be one of strong candidates for hard chromium by surface modification of its surface hardness. Ni-base alloy deposits has proved its application in specific mold for glass. HVOF has been studied in aircraft and military sector. There are still under way of development for commercially available alternatives. To date, no single coating has been identified as universal process as comparable to conventional hard chromium electroplating.

• 전기화학회지
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• 제14권2호
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• pp.61-70
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• 2011

Thin film solar cells with chalcopyrite $CuInSe_2/Cu(In,Ga)Se_2$ absorber materials, commonly known as "CIS/CIGS solar cells" have recently attracted significant research interest as a potential alternative energy-harvesting system for the next generation. Among the different deposition techniques available for the CIGS absorber layer, electrodeposition is an effective and low cost alternative to vacuum based deposition methods. This article reviews progress in the area of CIGS solar cells with an emphasis on electrodeposited absorber layer. Existing challenges in fabrication of stoichiometric absorber layer are highlighted.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2002년도 춘계 학술발표강연 및 논문개요집
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• pp.128-128
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• 2002

• Bulletin of the Korean Chemical Society
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• 제30권2호
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• pp.323-326
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• 2009

SR proteins are essential splicing regulators and also modulate alternative splicing events, which function both as redundant and substrate-specific manner. The Drosophila B52/SRp55, a member of the SR protein family, is essential for the fly development in vivo, as deletion of B52 gene results in lethality of animals at the second instar larval stage. Identification of the splicing target genes of B52 thus should be crucial for the understanding of the specific developmental role of B52 in vivo. In this study, we performed whole-genome DNA microarray experiments with a B52- knock-out animal. Analysis of the microarray data not only provided the B52-dependent gene expression signature, but also revealed a larval-stage specific, alternative splicing target gene of B52. Our result thus provides a starting point to understand the essential function of B52 at the organismal level.

• Journal of Microbiology and Biotechnology
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• 제34권5호
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• pp.994-1002
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• 2024

The rise in plant-based food consumption is propelled by concerns for sustainability, personal beliefs, and a focus on healthy dietary habits. This trend, particularly in alternative meat, has attracted attention from specialized brands and eco-friendly food companies, leading to increased interest in plant-based alternatives. The dominant plant-based proteins, derived mainly from legumes, include soy protein isolates, which significantly impact sensory factors. In the realm of plant-based fats, substitutes are categorized into fat substitutes based on fats and fat mimetics based on proteins and carbohydrates. The production of these fats, utilizing gums, emulsions, gels, and additives, explores characteristics influencing the appearance, texture, flavor, and storage stability of final plant-based products. Analysis of plant-based proteins and fats in hamburger patties provides insights into manufacturing methods and raw materials used by leading alternative meat companies. However, challenges persist, such as replicating meat's marbling characteristic and addressing safety considerations in terms of potential allergy induction and nutritional supplementation. To enhance functionality and develop customized plant-based foods, it is essential to explore optimal combinations of various raw materials and develop new plant-based proteins and fat separation.