• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2001.11b
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• pp.137-140
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• 2001

To improve structural properties and induce higher conductivity, we have annealed emitting layer. The temperature condition was investigated by various experiment. To observe the surface morphology of emitting layer, measured the AFM and the X -ray diffraction pattern of P3HT film is shown. It is move to slightly low angles and diffraction peaks also become much sharper. After annealing of emitting layer, EL intensity and Voltage-current-luminance curve is better as compared with untreated. But PL intensity was decreased. It is known that by emission principal. After annealing of emitting layer, EL devices enhances the interface adhesion between the emissive polymer and Indium-tin-oxide electrode, which takes a critical role to improve the emitting properties of EL devices.

• Journal of Microbiology and Biotechnology
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• v.18 no.1
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• pp.104-106
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• 2008

Enterobacter sp. BL-2 excretively produced a unique cationic polyglucosamine biopolymer PGB-1 comprised of more than 95% D-glucosamine in an acetate-mediated culture condition. The excretion of the biopolymer PGB-1 was closely associated with the cellular morphology of Enterobacter sp. BL-2, a feature highly dependable on the pH of the medium. The initially formed uneven and irregular surface cells were aggregated into the cell-biopolymer network structure connected by the adhesion modules of the cell-bound biopolymer. The excretive production of the biopolymer PGB-1 coincided with the disruption of the cell-biopolymer network, most actively at the medium pH of 8.0.

• Transactions of Materials Processing
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• v.17 no.2
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• pp.91-96
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• 2008

The governing parameters affecting the fatigue properties have been investigated experimentally in the high carbon steel wires with 0.94 wt.%C. In order to find the crucial factors, the advanced analysis techniques such as optical 3-D profiler, focused ion beam(FIB) and transmission electron microscope(TEM) were used. The two-type steel wires with different drawing strain were fabricated. The fatigue properties were measured by hunter rotating beam tester, specially designed for thin-sized steel wires. It was found that the fatigue properties of the steel wires with high drawing strain was higher than that with other wires because of low residual stress and high adhesion condition of brass coating layer.

• Journal of Veterinary Clinics
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• v.34 no.3
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• pp.225-227
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• 2017

This study was investigated the zoonotic possibility of Staphylococcus schleiferi by adherence to both canine and human corneocytes. Staphylococcus pseudintermedius, Staphylococcus aureus, and S. schleiferi were prepared and canine and human corneocytes were collected via double-sided tape. Adhesion to human corneocytes was higher for S. schleiferi than S. pseudintermedius but highest for S. aureus. Regarding the canine corneocytes, S. schleiferi was the least adhesive strain. Furthermore, S. pseudintermedius adhered to the entire surface of both human and canine corneocytes. S. aureus and S. schleiferi, however, adhered to the corneocyte peripheries. Thus, S. schleiferi may have zoonotic potential and the potential is higher than S. pseudintermedius.

• Proceedings of the Korean Vacuum Society Conference
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• 2011.02a
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• pp.334-334
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• 2011

We applied N-ion bombardment and heat treatment to the Cu thin films deposited on aluminum oxide layer for the enhancement of adhesion. With e-beam evaporation method. $1,000{\AA}$ thick Cu pre-bombardment layer was deposited on the aluminum oxide surface and then N-ion beam was bombared in order to mix the atoms at the film/substrate interface. Additional $4,000{\AA}$-thick Cu film was the coated. Subsequently, the ion mixide Cu on aluminum oxide was annealed at $200^{\circ}C$ and $300^{\circ}C$ in vacuum.

• Textile Coloration and Finishing
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• v.28 no.3
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• pp.183-188
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• 2016

The uniformly dispersed p-Aramid chopped fiber in a variety of rubber was investigated. The cross section and surface properties in a variety of rubber were characterized by scanning electron microscopy(SEM), weight, tensile strength, cold resistance measurements. The 1mm p-Aramid chopped fiber better uniformly dispersed than the other p-Aramid chopped fiber. The p-Aramid of lmm chopped fiber showed excellent adhesion in rubber composite because of homogeneous dispersion. Consequently, the best 1mm chopped fiber and rubber improved the strength of the composite.

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2000.11a
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• pp.92-92
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• 2000

• Proceedings of the Korean Fiber Society Conference
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• 2003.10b
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• pp.189-190
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• 2003

섬유강화 복합재료의 사용이 점점 증가함에 따라 구조용 및 내장재 등으로 사용된 수명이 다한 섬유강화 복합재료의 사용후 폐기가 문제가 되고 있다. 특히, 자동차 부품, 건축자재 및 전기절연재 등으로 가장 많이 사용되는 유리섬유 복합재료의 폐기물이 급격히 증가하여 환경 오염문제가 심각해지고 있어서, 환경 친화적인 새로운 복합재료에 대한 필요성이 제기되어 왔다. 따라서 본 연구에서는 천연섬유를 이용한 천연섬유/생분해성 수지계 복합소재를 대상으로 환경적합성이 우수하고 자연환경에서 완전한 생분해성을 가지며, 유리 섬유복합재료를 대체할 물성이 우수한 새로운 Biocomposite를 개발하고자 하였다. (중략)

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2001.10a
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• pp.75-82
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• 2001

Finite element analysis using ANSYS program conducted to evaluate the tensile behavior of the connection between reinforced concrete and steel members is presented in this paper. It is assumed that there is a complete bond between head part of the stud and concrete. However, the surface of the column area of stud is separated from the concrete to stop the stress transmission between those. In case of using reinforcement connectors such as C or U type, the interface between concrete and reinforcement is idealized to have strong adhesion. Four concrete-steel specimens which are connected by stud connector or reinforcement connectors are compared and analyzed From the comparison, it was shown that the connection between concrete and steel could be predicted by using the modeling technique used in this paper.

• Korean Journal of Materials Research
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• v.15 no.8
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• pp.521-527
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• 2005

Surface modification of polypropylene hollow fiber membranes was peformed in order to develop blood-compatible biomaterials for use in the blood contacting and oxygenation membranes of a lung-assist device(LAD). Blood compatibility was determined by using anticoagulation blood and evaluating formation of blood clots on their surfaces as well as activation of plasma coagulation cascade, platelet adhesion, and aggregation. It was verified that the number of platelets on the silicone coated fibers was significantly lower than those on polypropylene. It was also found that the polypropylene hollow fiber membranes using plasma treatment exhibited suppression of complement activation in blood compatibility test.