포도껍질 추출물을 이용한 모발의 염색 특성

서종철,박철호 대한피부미용학회 2015 대한피부미용학회지 Vol.13 No.5

The purpose of this study is to examine the possibility of anthocyanin pigments of Grape skin. In order to achieve this purpose, anthocyanin concentration was analyzed by measuring absorbency from anthocyanin 540 nm of Grape skin and color changes were observed according to changes in temperature and pH through color measurement. hair dyeing of anthocyanin pigments was found to very good at 40℃ for 20 min. Unmordanted Hair dyeing was increased in dye intake (K/S) with increased dyeing temperature and hair color was changed from dark red to bright red. anthocyanin pigments were specially sensitive to pH and dye intake was decreased with increased pH. Higher acidity generally led to a stronger reddish tint, while higher alkalinity led to a decrease in red coloration and a stronger yellow tint. For hair dyeing, mordanting methods(pre-mordanting, simultaneous mordanting, or post-mordanting) should be selected in consideration of the characteristics of mordants (dye intake, lightless, chroma and color). Based only dye intake(K/S), while simultaneous mordanting was effective for FeSO4, MnSO4, AlK(SO4)2, CaCO3, Na2CO3, pre-mordanting was effective for MgSO4, CH3COOH, post-mordanting was effective for CuSO4, Co(NO3)2. The rate of colorfastness was decreased with repeating shampoo washing. From these results, we can confirm that the extracts from Grape skin may be useful in the materials of hair coloring dye.

[특집] 건설IT의 지속가능 발전을 위한 제언

서종철 (사)한국CDE학회 2013 한국CAD/CAM학회학회지 Vol.19 No.1

인산형 연료전지의 단위 전지 내의 전달현상에 관한 연구 ( Analysis of Transport Phenomena in a Phosphoric Acid Fuel Cell )

서종철,박토순,김유 대한기계학회 1990 대한기계학회 춘추학술대회 Vol.- No.-

모래포집기 설치 후 전사구의 지형 변화

서종철 한국지역지리학회 2009 한국지역지리학회 학술대회 Vol.2009 No.8

해안사구의 생태적 가치를 평가하기 위한 항목과 기준 개발

서종철 대한지리학회 2008 대한지리학회 학술대회논문집 Vol.- No.-

Best Practices for using IT Standards for Integration in the AEC Industry: Product Modeling Approach

서종철,김인한 대한건축학회 2004 Architectural research Vol.6 No.2

For the past ten years, many sectors of the AEC industry have been developing standards for th e electronic sharing and exchange of product model data. Several related industries such as automotive and shipbuilding manufacturing have been relatively successful in the use of inte-grating electronic product models into their operations. The AEC industry is lagging in this development. For the AEC industry to meet the challenges of the future, the development of a product modeling standard that enables project informations sharing, storing, and exchange is essential. In this research, therefore, authors have highlighted the standards for integration, and reviewed case studies on the standards for integration by literatures investigation and multiple research strategies. Based on these research strategies, consequently, authors propose best practices for using product modeling technologies, called by standards for integration in the AEC industry.

생태관광자원 디지털 스토리텔링을 적용한 모바일 어플리케이션 개발

서종철,이승주 국토지리학회 2012 국토지리학회지 Vol.46 No.2

In line with fast settling trend of individual-centered ecotourism, application has been developed using the digital storytelling technique for tourists, already adapted to the mobile environment, to use mobile devices on the spot to learn about the area’s natural ecology, culture, and history information. Adobe’s mobile AIR, which can be simultaneously applied to various platforms, was used for application development. User interface was implemented for ease-of-use and sense of closeness for youth enabling usage by all age groups and interactive factors including 3D implementation were added to trigger interest from the user’s perspective. Finally, case studies were carried out and proposed for Dokdo Island, Upo wetland, and Jirisan Mountain. If problems arising from test operation are resolved in the future, we expect that this technology can become the digital storytelling technology standard based on mobile platform. 개인 중심의 생태관광이 빠르게 자리를 잡아가고 있는 추세에 맞춰, 모바일 환경에 적응된 관광객들이 현지에서 모바일 기기를 통해 그 지역의 자연생태, 문화, 역사 정보를 접할 수 있도록 디지털스토리텔링 기법을 이용하여 어플리케이션을 개발하였다. 어플리케이션 개발에는 다양한 플랫폼을 동시에 적용할 수 있는 어도비 사의 모바일 에어(mobile AIR)를 사용하였다. 유저인터페이스는 모든 연령대의 이용이 가능하도록 저연령층을 대상으로 친근감있고 사용하기 편리하도록 구성하였고, 사용자의 측면에서 흥미를 유발할 수 있는 3D 구현을 포함한 인터랙션적 요소를 가미하였다. 마지막으로 독도, 우포늪, 지리산을 대상으로 사례를 작성하여 제시하였다. 향후 시범 운영을 통해 드러난 문제점을 보완한다면, 생태관광분야에 있어서 모바일 기반의 디지털 스토리텔링 기술 표준을 제시할 수 있을 것으로 기대한다.

IFC-Based Computational Support Tool for Managing and Using Design Planning Information: Case Application and Evaluation

서종철,김인한 대한건축학회 2011 Architectural research Vol.13 No.2

Planning information generated during initial architectural design phases significantly influences subsequent phases, and is implemented into architectural design models during the design process. However, failures to manage and use planning information in Korean design offices remain common. Current design tools that incorporate planning information also do not address the issue of interoperability during the life cycles of buildings. To address these problems, the Industry Foundation Classes (IFC) extension model was developed to accommodate the need to manage and use planning information for cooperation between design offices carrying out multi-disciplinary tasks. This paper introduces a purpose-built software tool that implements the IFC model and demonstrates the efficiency of the proposed method with the software tool.

Fluorine Group 의 첨가에 따른 폴리이미드 박막의 Morphology 와 Water Sorption 거동

서종철,김승진,이춘근,김동원,조영일,한학수 ( Jong Chul Seo,Seung Jin Kim,Choon Keun Lee,Dong Won Kim,Yung Il Joe,Hak Soo Han ) 한국공업화학회 1997 응용화학 Vol.1 No.1

Gravimetric technique was used to understand and classify the effect of fluorine group on water diffusion characteristics and morphology of polyimide thin films, two different families of copolyimides; flexible, BTDA-ODA and rigid, PMDA-PDA. The sorption kinetics of water in these films was well fitted to Fickian diffusion. In BTDA/6FDA-ODA polyimide thin films, the diffusion coefficient and total water uptakes were varied with increase of the mole fraction in fluorine group from 14.8x10^(-10)㎠/sec to 16.9x10^(-10)㎠/sec, 2.78 wt. % to 1.70 wt. %, respectively. And in PMDA/6FDA-ODA polyimide thin film, the diffusion coefficients and total water uptakes varied with increase of mole fraction in fluorine group from 7.3x10^(-10)㎠/sec to 12.8x10^(-10)㎠/sec, 4.33 wt. % to 3.18 wt. %, respectively. The effect of fluorine group on sorption kinetics is larger in rigid structure, PMDA-PDA than that does in flexible structure. BTDA-ODA polyimide morphology is not very affected by incorporation of fluorine group. But, rigid PMDA-PDA polyimide morphology was affected by the fluorine group, which increases the flexibility of polyimide structure. The diffusion coefficient and sorption kinetics were affected by the chemical structure of polyimide thin film.

Thermal Properties and Water Sorption Behaviors of Epoxy and Bismaleimide Composites

서종철,장원봉,한학수 한국고분자학회 2007 Macromolecular Research Vol.15 No.1

In this work, we prepared epoxy/BMI composites by using N,N'-bismaleimide-4,4'-diphenylmethane (BMI), epoxy resin (diglycidyl ether of bisphenol-A (DGEBA)), and 4,4'-diamino diphenyl methane (DDM). The thermal properties and water sorption behaviors of the epoxy and BMI composites were investigated. For the epoxy/ BMI composites, the glass transition and decomposition temperatures both increased with increasing BMI addition, which indicates the effect of BMI addition on improved thermal stability. The water sorption behaviors were gravi metrically measured as a function of humidity, temperature, and composition. The diffusion coefficient and water uptake decreased and the activation energy for water diffusion increased with increasing BMI content, indicating that the water sorption in epoxy resin, which causes reliability problems in electronic devices, can be diminished by BMI addition. The water sorption behaviors in the epoxy/BMI composites were interpreted in terms of their chemical and morphological structures.