• Proceedings of the KSR Conference
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• 2008.06a
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• pp.707-712
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• 2008

As RAMS becomes an international trend in the railroad industry, it is also generalized in the domestic railroad industry. This research is performed to present a criterion of the RAMS plan for the next generation high speed rolling stock. The criterion is developed based on IEC62278(EN50126), the international standard for railroad RAMS and CLC/TR 50126-2, 3, the guide to the application of IEC 62278. It is necessary for the export of the rolling stock. The criterion describes the RAMS targets and the contents to be included in the RAMS plan to meet the RAMS targets. Through developing the RAMS plan, we can identify RAMS activities and documents to be done in the total life cycle which includes design, manufacture and operation. It will help to accomplish synthetically the system targets of the next generation high speed rolling stock.

• Journal of the Korean Chemical Society
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• v.65 no.2
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• pp.121-124
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• 2021

RNA molecules which bind to the G-rich sequence in the 5'-UTR RNA which plays an important role in expression of N-ras, were selected. The secondary structures of five selected RNA aptamers including primer sequence were found by the CLC RNA workbench ver. 4.2 program (www.clcbio.com) and investigated with RNA structural probes such as RNase T1 which has specificity for a G in single-stranded region, RNase V1 specific for double strand and nuclease S1 specific for single strand. The generalized secondary structure model was proposed and characterized. It was composed of a central long double strand region flanked by single strand region at both end sides. The double strand region had an internal single-strand region and bulges. The single strand loop in the right side was composed of four or five nucleotides.

• Journal of Life Science
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• v.18 no.3
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• pp.381-386
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• 2008

Deep sea water was tested for cancer chemopreventive activity by measuring the activities of ${\beta}-$ naphthoflavone $({\beta}-NF)-induced$ cytochrome P 450 1A2 (CYP 1A2), quinone reductase (QR) and glutathione-S-transferase (GST), glutathione (GSH) levels, and ornithine decarboxylase (ODC) activity. The in vitro incubation of rat liver microsome with deep sea water (a hardness range of $100{\sim}1,000$) showed a hardness-dependent inhibition of CYP 1A2 activity. QR and GST activities were induced about $1.1{\sim}1.2$ fold with the treatment of deep sea water in murine hepatoma Hepa 1clc7 cells. In addition GSH levels were increased $1.3{\sim}1.4$ fold in a hardness range of $100{\sim}1,000$. The deep sea water showed 20.3 and 35.0% inhibition of 12-O- tetradecanoylphorbol-13-a-cetate (TPA)-induced ODC activity at hardness 800 and 1,000, respectively. Therefore, deep sea water is worth further investigation with respect to cancer chemoprevention or therapy.

• Journal of the Korean Institute of Telematics and Electronics B
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• v.31B no.9
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• pp.150-158
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• 1994

In this paepr, Fuzzy Constraint Line Clustering (FCLC) method for optical flow estimation is proposed. FCLC represents the spatical and temporal gradients as fuzzy sets. Based on these sets, several constraint lines with different membership values are generated for the poxed whose velocity is to be estimated. We describe the process for obtaining the membership values of the spatial and temporal gradients and that of the corresponding constraint line. We also show the process for deciding the tightest cluster of point formalated by intersection between constraint lines. For the synthetic and real images, the results of FCLC are compared with of CLC.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.05a
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• pp.537-541
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• 2001

This study is to construct ODBC Database based Web, which has a structure of Web server and Database server connected with Database concerning server demand for the purpose of the efficient record, use and management of various document data. Each ASP OLE DB ran be saved and inferred by measuring CLC and ULC. That makes to record, use and management of document data more convenient. For the application of the suggested of the system this study is to put together into 6 categories and generalize the synthetic opinion column of high school student document.

• Journal of agriculture & life science
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• v.46 no.4
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• pp.9-20
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• 2012

Eugenol is a volatile compound synthesized by eugenol synthase in various plants and belongs to phenylpropene compounds. However, characteristics of eugenol synthase in tomato has not been known. Therefore, we cloned a full length cDNA of a putative eugenol synthase from tomato 'Micro-Tom' using rapid amplification of cDNA ends (RACE) technique and named a clone SlEGS. Open reading frame of SlEGS was 921bp long and its deduced amino acid sequence was 307bp. The BLAST analysis indicated that SlEGS shared high similarity with PhEGS1 (67.1%) and CbEGS2 (69.4%). Amino acid composition of SlEGS was determined by CLC genomics workbench tool and 3D structure of SlEGS was constructed by homology modeling using Swiss-PDB viewer and validated using PROCHECK and ProSA-web tool. In addition, the physiochemical properties of SlEGS was evaluated using ExPASy's ProtParam tool. Molecular weight was 33.93kDa and isoelectric point was 5.85 showing acidic nature. Other properties such as extinction coefficient, instability index, aliphatic index, and grand average hydropathy was also analyzed.

• Journal of the Korean Society of Marine Environment & Safety
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• v.14 no.3
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• pp.177-181
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• 2008

In this study, the authors analyzed the limit of IOPC Fund system, such as limit of compensation, amount of FC, long period of assessment by IOPC Fund, issue of non verification by poor claimant or small business, issue of poor claimant subsistence in early stage of accidents, and comparatively analyzed how the three countries resolved these limits by enacting special laws and government policy. Until recently most governments have carried out prevention policy for maritime safety, oil spill response, investigation of maritime accidents, and restoration of marine environment when oil spill accidents happened. However, governments have not actively participated in the oil spill compensation process because it is a matter of private sectors between the polluter and claimant. The governments have only limited their role in ratifying Civil Liability Convention and Fund Convention and enacted relevant domestic laws. However, the governments of France, Spain, and Korea have actively participated in the compensation process of oil pollution incidents of M/T Erika, M/T Prestige, and M/T Hebei Spirit. This is because they had experiences of unsuccessful compensation in M/T Amoco Cadiz, M/T Agean Sea, and M/T Sea Prince.

• Proceedings of the IEEK Conference
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• 2003.07b
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• pp.1125-1128
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• 2003

This paper presents the design method of a Colpitts type oscillator with coplanar waveguide(CPW) structures in the range of Ka-band frequency for transmitter and receiver modules. Series short stubs of CPW patterns provide inductances and capacitances in the range of Ka-band which can be expressed as a CLC-$\pi$ equivalent circuit. The experimentation has employed ro4003 substrates as a CPW substrate which has a dielectric constant of 3.38 and a signal and ground space of 100um. A method of momentum simulation for the CPW patterns has performed with an ADS software tool of Hewlett-Packard Corp. Inductance and capacitance circuits of a Colpitts oscillator was interconnected to a MESFET with CPW bend structures of including the input and output impedance matching circuits of the active transistor. Circuit parameters for impedance matching were determined through the network conversion to the equivalent length of CPW transmission lines by using T-network 1 $\pi$-network conversion circuit. A Colpitts oscillator was fabricated on the substrate of a area of 8.5mm x 17.4mm with a MESFET of Fujitsu FMM5704X and CPW series short stubs. The design suggested the possibility of realizing oscillators on a planar surface for the wireless system of tansmitter and receiver modules in the frequency range of 30GHz

• 한국정보디스플레이학회:학술대회논문집
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• 2002.08a
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• pp.560-562
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• 2002

The liquid crystal(LC) pixel capacitance Clc, which varies as a function of applied pixel voltage, is a main factor of pixel voltage errors on input gamma voltage, and therefore of the electro-optics(E-O) characteristics of LC pixel for a-Si TFT LCDs. The pixel voltage error(${\Delta}$Vp) for input gamma voltage was simulated for 14.1 inch diagonal XGA panel. An agreement between the experimental results and simulation was satisfactory for the gamma voltage compensation, ${\Delta}$Vp of the input gamma voltage. The proposed compensation method was successfully introduced to a 14.1 inch diagonal XGA panel, and a remarkable improvement of image sticking was achived.

• 한국연소학회:학술대회논문집
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• 2004.06a
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• pp.227-234
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• 2004

For gaseous fuel combustion with inherent $CO_2$ capture and low NOx emission, chemical-looping combustion(CLC) may yield great advantages of savings of energy to $CO_2$ separation and suppressing the effect on environment. In chemical-looping combustor, fuel is oxidized by metal oxide medium (oxygen carrier particle) in a reduction reactor. Reduced particles are transported to oxidation reactor and oxidized by air and recycled to reduction reactor. The fuel and the air are never mixed, and the gases from reduction reactor, $CO_2$ and $H_2O$, leave the system as separate stream. The $H_2O$ can be easily separated by condensation and pure $CO_2$ is obtained without any loss of energy for separation. The purpose of this study is to demonstrate inherent $CO_2$ separation and no NOx emission and to confirm high $CO_2$ selectivity, no side reaction (i.e., carbon deposition, hydrogen generation) by continuous reduction and oxidation experiment in a 50kWtb chemical-looping combustor. NiO/bentonite particle was used as a bed material and $CH_4$ and air were used as reacting gases for reduction and oxidation respectively.