• 한국분무공학회지
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• 제5권2호
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• pp.61-67
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• 2000

The interaction between chemistry and turbulence is treated by employing the Representative Interactive Flamelet (RIF) Model. The detailed chemistry of 114 elementary steps and 44 chemical species is adopted for the n-heptane/air reaction. In order to account for the spatial inhomogeneity of the scalar dissipation rate, the multi-RIF is used. The effect of the number of RIF on ignition delay is discussed in detail. Numerical results indicate that the present RIF approach successfully predicts the ignition delay time as well as the essential features of a spray auto-ignition process.

• Biomaterials and Biomechanics in Bioengineering
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• 제1권3호
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• pp.117-130
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• 2014

This paper presents a study on the influence of different thermo-mechanical processing (TMP) parameters on some required properties such as micro-hardness and Young's modulus of a novel near ${\beta}$ alloy Ti-20.6Nb-13.6Zr-0.5V (TNZV). The TMP scheme comprises of hot working above and below ${\beta}$ phase, solutionizing treatment above and below ${\beta}$ phase coupled with different cooling rates. Factorial design of experiment is used to systematically collect data for micro-hardness and Young's modulus. Validity of assumptions related to the collected data is checked through several diagnostic tests. The analysis of variance (ANOVA) is used to determine the significance of the main and interaction effects. Finally, optimization of the TMP process parameters is also done to achieve optimum values of the micro-hardness and Young's modulus.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2002년도 생물공학의 동향 (X)
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• pp.30-33
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• 2002

We have shown that it is possible to form a fibrilar network of fibronectin on a polyelectrolyte polymer film whose dimensions are similar to those reported on the extra cellular matrix. The fibronectin network was observed to form only when the charge density of the polymer was in excess of the natural charge density of the cell wall. Furthermore, the self-organized fibronectin layer was much thicker than the polymer film, indicating that long ranged interaction may playa key role in the assembly process. It is therefore important to understand the structure of the polymer layer/protein interface. Here we report on a neutron reflectivity study where we explore the structure of the polyelectrolyte layer, in this case sulfonated polystyrene (PSSx,), with varying degree of sulfonation (x<30%), as a function of sulfur content and counter ion concentration. These results are then correlated with systemic study of the adsorption and the multilayer formation of fibronectin as a function of incubation time for various sulfonation levels of $PSSx.^1$

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2012년도 한국컴퓨터종합학술대회논문집 Vol.39 No.1(B)
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• pp.492-494
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• 2012

MicroRNAs(miRNAs)는 mRNA의 발현량을 조절하여 단백질 생성량에 영향을 주는 것으로 잘 알려져있다. miRNA의 데이터베이스는 실험으로 증명된 결과를 중심으로 구성되어 있다. 하지만 miRNA 데이터베이스는 miRNA가 대상으로 하는 유전자 정보에 초점을 맞추고 있어서 그 이상의 질병정보를 얻기에는 어려움이 있다. 본 논문에서는 miRNA와 Protein-Protein Interaction(PPI) 통합 모델을 설계하여 miRNA의 의미적 확장 방법을 제시하고 있다. 또한 Online Mendelian Inheritance in Man(OMIM)을 이용한 miRNA, PPI, 관련 질병, 질병 표준화 관계의 확장방법을 찾아보았다. 이러한 접근 방법은 이형 데이터베이스를 연결하여 하나의 생물학적 시야를 제공할 수 있을 것으로 기대된다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 C
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• pp.1519-1521
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• 1997

In this paper, poly (N-(2-4-imidazolyl) ethyl) maleimide-alt-1-octadecene (IMI-O) polymer which can complex metal ion was used to confirm the possibility of molecular device made by Langmuir-Blodgett method. Metal/Insulator/Metal (MIM) device was fabricated for investigation of electric properties. In the ${\pi}$-A isotherm, surface pressure at collapse point was different as to the molecular weight of metal ion complexed respectively, In I-V characteristics, currents of MiM devices were different at the same voltage. It was thought that phenomena was occurred by interaction between function group and metal ion.

• Steel and Composite Structures
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• 제35권4호
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• pp.495-508
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• 2020

Double skin composite walls are alternatives to concrete walls to resist gravity load in structures. The composite action between steel faceplates and concrete core largely depends on the internal mechanical connectors. This paper investigates the structural behavior of novel composite wall system with T section and under combined compressive force and bending moment. The truss connectors are used to bond the steel faceplates to concrete core. Four short specimens were designed and tested under eccentric compression. The influences of the thickness of steel faceplates, the truss spacing, and the thickness of web wall were discussed based on the test results. The N-M interaction curves by AISC 360, Eurocode 4, and CECS 159 were compared with the test data. It was found that AISC 360 provided the most reasonable predictions.

• Molecules and Cells
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• 제20권3호
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• pp.364-370
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• 2005

We show that sulforaphane inhibits osteoclastogenesis in the presence of macrophage colony-stimulating factor (M-CSF) and receptor for activation of nuclear factor-${\kappa}B$ ligand (RANKL) in osteoclast (OC) precursors. Sulforaphane, an aliphatic isothiocyanate, is a known cancer chemo-preventative agent with anti-oxidative properties. Nuclear factor-${\kappa}B$ (NF-${\kappa}B$) is a critical transcription factor in RANKL-induced osteoclastogenesis, and electrophoretic mobility shift assays (EMSAs) and assay of NF-${\kappa}B$-mediated secreted alkaline phosphatase (SEAP) revealed that sulforaphane selectively inhibited NF-${\kappa}B$ activation induced by RANKL. Inhibition may involve interaction of sulforaphane with thiol groups, since it was prevented by reducing agents.

• 한국자기학회:학술대회 개요집
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• 한국자기학회 2002년도 동계연구발표회 논문개요집
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• pp.108-109
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• 2002

자성 garnet(YIG)의 현재 가장 널리 쓰이는 microwave 자성재료 중 하나이며 자기적 손실이 적은 특성을 가지고 있다고 보고되어 지고 있다.[1] Microwave 소자로 응용하기 위해서는 포화자화값 (M$_{s}$ ), 보자력 (H$_{c}$), Neel 온도 (T$_{N}$)등을 제어하는 기술을 요구되어진다. 이러한 자성재료인 Garnet의 결정 내에는 octahedral-16a과 tetrahedral-24d 그리고 dodechahedral-24c의 세 개의 부격자가 있다. 이러한 부격자들에 치환되는 이온에 따라 자기적 교환 상호작용이 달라지게 된다. (중략)

• Journal of Microbiology and Biotechnology
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• 제7권6호
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• pp.386-390
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• 1997

A xylanase from the Bacillus sp. strain DSNC 101, isolated from soil, was purified to homogeneity by anion-exchange and hydrophobic interaction chromatography followed by gel filtration chromatography. The enzyme cleaved xylan, but not carboxymethyl cellulose, Avicel, soluble starch, and pNPX. The main product of oat spelts xylan hydrolysates was xylobiose. The xylanase had a molecular weight of 25 kDa determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Optimum temperature and pH for the xylanase activity were $50^{\circ}C$ and 6.0, respectively. $K_{m}\;and\;V_{max}$ of the enzyme for oat spelts xylan were 12.5 mg of xylan/ml and 869.5 unit/mg of protein, respectively. Xylanase was completely inhibited by Hg, Cu, and N-bromosuccinimide, but was stimulated by Ca, Co, and Mg.

• 대한전기학회논문지:전력기술부문A
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• 제54권4호
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• pp.172-176
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• 2005

Power system restoration following a massive or complete blackout starts with energizing of primary restorative transmission lines. During this primary restoration, inexpected overvoltage may happen due to nonlinear interaction between the unloaded transformer and the transmission system. This is known as the harmonic resonance phenomenon that may cause burning out of transformer or other devices. By now the harmonic resonance is reported in the extra high voltage system. This paper reports the detection of the resonance in Korean power system. Basic analysis and simulation of the harmonic overvoltage is presented using EMTDC.