• 복합신소재구조학회 논문집
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• 제6권3호
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• pp.20-25
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• 2015

This paper introduces a digital image processing(DIP) method as a method for measuring the displacement of pylon. The comparison of DIP results and ANSYS analysis results verified the validity of the image processing technique. Normalized cross-correlation(NCC) coefficient was used and experiments were performed three times. It shows that the displacement difference was 22% and 5% compared to ANSYS results. Therefore, the image processing method is expected to be able to measure the displacement of pylon sufficiently.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.2071-2072
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• 2011

Withstand voltage characteristics of the nanocomposites, as a material with excellent abrasion resistance and water resistance, low shrinkage upon curing with moisture even in very good adhesion, workability is not lost. In this study, the fusion of nanoparticles and the high functionality epoxy nano-composite material produces the electricity. Degeneration of the unit based on this power structure and breakdown characteristics, efficiency and cross-measurement system as closely related organisms that can be applied to the power plant electrical efficiency of the nano-composite material is designed to develop skills.

• 한국고분자학회:학술대회논문집
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• 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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• pp.359-359
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• 2006

This study deals with development of new bio-based polymeric materials from epoxidized soybean oil (ESO). The curing of ESO in the presence of organophilic montmorillonite produced an oil polymer-clay nanocomposite ("green nanocomposite") showing flexible property. A green nanocomposite (oil polymer-silica nanocomposite) coatings were synthesized by an acidcatalyzed curing of ESO with 3-glycidoxypropyltrimethoxysilane. The curing of ESO in the presence of a biodegradable plastic, poly(caprolactone), produced a composite with semi-IPN structure. The mechanical properties of the composite was much superior to those of polyESO. These new oil-based materials have large potential for applications in various fields.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 춘계학술대회
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• pp.41-42
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• 2021

정부의 에너지 소비 구조 혁신, 에너지산업의 글로벌 경쟁령 강화를 위한 제3차 에너지기본계획 수립과 저탄소 경제로의 이행 필요성 증대에 따른 탄소중립 사회 실현을 위한 그린뉴딜 정책이 수립되었다. 이에 따른 취수장, 정수장, 가압장 등 수도사업장에서도 공정별 제어계측 요소 및 에너지 소비현황 등을 분석하여 4차산업혁명을 위한 인공지능형 복합 센서 개발 및 실증을 통하여 에너지 관리 효율성을 향상시키고, 에너지 사용량을 절감함으로써 정부정책 및 경영방침에 적극 부응하고, 탄소중립(Net-Zero) 정수장 실현하고자 하였다.

• Journal of Plant Biotechnology
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• 제39권3호
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• pp.169-174
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• 2012

Quantitative trait loci (QTLs), which were related to the ability of callus induction and plant regeneration in seed culture of rice, were analyzed using a mapping population from a cross between the rice cultivars 'Samgang' (tongil type) and 'Nagdong' (japonica). A tongil type rice cultivar, 'Samgang' showed lower frequency (20%) of plant regeneration than that (35%) of japonica rice, 'Nagdong'. Transgressive segregations were observed for the ability of callus induction and plant regeneration from the seed-derived calli of 58 doubled haploid (DH) lines. The ability of plant regeneration of 58 doubled haploid lines showed a continuous distribution with comparatively wide range (10.0 to 66.7%) of variation. Composite interval mapping analysis was used to identify the QTLs controlling callus induction and plant regeneration ability. Four significant QTLs, qCWS6, qCWS8, qCWS9 and qCWS11, associated with callus weight per seed were detected on chromosomes 6, 8, 9, and 11 with LOD values of 3.30, 2.60, 2.70 and 2.43, explaining 36% of the total phenotypic variation. Three significant QTLs, qPR1, qPR6, and qPR11, for the ability of plant regeneration were located on chromosome 1, 6, and 11 at LOD score of 2.25, 2.15 and 2.55, accounting for 24 % of the total phenotypic variation. The present study should be useful for improving the efficiency of plant regeneration in tissue culture of indica rice by means of marker-assisted selection.

• 한국재난정보학회 논문집
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• 제3권2호
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• pp.23-35
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• 2007

Recently, for places with poor vegetating environment, such as slopes made of weathered soil or rocks, erosion tranquilizers, coverings and composite fertilizers have been mixed with seeds and sprinkled onto soil. Also, these plant revegetations have been mixed with nets and used to strengthen cohesion. However, this technique often obstructed plant growth and caused pollution because of not decomposing nets. This study has tested influence on plant revegetation B for slope of weathered soil and rocks and decomposition of naturally decomposing polyester filament yarn. In result, it was showed that plant revegetation B does not harm environment in case of applying it to soil slope and enhance protection capacity of slopes as time goes by. Also, naturally decomposing polyester filament yam was analyzed its physical properties with the passage of time and was known that naturally decomposing polyester filament yarn transformed into a structure easy to decompose by hardening. Thus it is considered that the revegetation method used this study was very effective method for plant establishment and stability of slope.

• 한국수소및신에너지학회논문집
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• 제15권2호
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• pp.98-107
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• 2004

Modified Ni/YSZ cermets for high temperature electrolysis were synthesized by dry or wet mechanical alloying methods. The Ni/YSZ composit particle was directly fabricated from the ball milling of Ni and YSZ powder or obtained from the reduction of NiO/YSZ particle after the ball milling of NiO and YSZ. In the case of the NiO/YSZ composite particle, the dry milling increased the average particle size whereas the wet milling decreased the size. The dry milling showed that fine YSZ particles were distributed over large Ni surfaces while Ni and YSZ particles similar in size were well mixed in the wet milling method. These features were the same in the Ni/YSZ composite particle prepared from Ni and YSZ powders. The electrical conductivity of the wet-milled Ni/YSZ cermet showed the highest value of $2{\times}10^2S/cm$ among the specimens and this value was increased to $1.4\times10^4S/cm$ after the sintering at $900^\circ{C}$ for 1 h.

• 한국산학기술학회논문지
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• 제19권3호
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• pp.130-140
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• 2018

U형 강재보를 근간으로 콘크리트 슬래브와 합성을 위하여 A형의 덮개형 강재앵커를 검토하여 AU합성보를 연구하였다. 이는 노출형의 H형강 강재보에 비해 내부 평면의 자율성을 높일 수 있고 공기 단축과 더불어 층고 절감이 가능하며 튜브구조로서 내부에 콘크리틀 충전하여 휨 강도과 휨 강성를 높였다. 본 연구에서는 AU합성보의 휨실험을 통해 성능을 평가하였다. 실험 결과, 하중 초기에 선형적으로 하중이 증가하면서 콘크리트 슬래브의 파괴에 의해 최대 강도에 도달하고 최대 내력의 85% 이상을 발휘하며 연성적 거동을 하였다. 또한, 덮개형 강재앵커를 통해 합성효과를 발휘하였으며 모든 실험체가 최대 내력에 도달할 때까지 완전 합성거동으로 안정적이었다. 그리고 U형 단면의 강판 두께를 증가시켰을 경우에도 휨 강도와 휨 강성이 증가하였고, U형 단면의 하부에 고강도 강판을 용접 부착하였을 경우에도 성능이 개선되었다. AU합성보의 휨강도는 건축구조기준에 따라 제안된 휨 강도식을 적용할 수 있을 것으로 판단되었다.

• 한국추진공학회지
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• 제19권5호
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• pp.78-83
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• 2015

복합재 연소관은 적층구조이므로 한 층이 손상되면 손상이 진전되어 전체 연소관의 파손이 발생한다. 금속재 라이너 위에 복합재를 와인딩하면 한 층이 손상되어도 전체 연소관의 파손이 발생되지는 않는다. 본 연구에서는 금속재 연소관에 후프 와인딩한 하이브리드 연소관의 파열압력을 예측하기 위해 유한요소해석과 연소관의 파열시험을 통하여 결과를 비교하였으며, 하이브리드 연소관의 파열압력 예측을 통하여 알루미늄 라이너의 두께를 결정하고 복합재료의 적층두께를 결정함으로써 하이브리드 연소관 설계에 사용할 수 있다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2011년도 추계 학술논문 발표대회
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• pp.29-30
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• 2011

A Green Frame is a composite Rahmen precast concrete structure that utilizes the advantages of the steel frame and the reinforced concrete. Compared to bearing wall structure, the precast concrete structure may raise construction cost If the precast concrete members are produced in plant. Thus, if the precast concrete members can be produced in site, the cost-effectiveness and quality shall be increased. Various site conditions must be considered and reviewed to ensure a space for the in-situ production. Therefore, this study focuses on the basic study on the arrangement of in-situ production module of composite precast concrete members.