• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.730-731
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• 2015

This paper presents the analysis of the analysis of thrust characteristics of linear induction motors(LIMs) according to secondary reaction plate. LIMs are well known as high speed transport systems, which can obtain thrust directly without gears and links, or auxiliary mechanisms. A simple structure, easy maintenance, and less environmental pollution are advantages of LIMs. In transport systems using LIMs, the secondary reaction plate is an important design factor, because it has considerable impact on the cost of the railway as well as the performance of the LIMs.

• Toxicological Research
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• 제12권1호
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• pp.9-15
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• 1996

We studied the effects of a single, combined and mixed exposure of benzene, toluene and xylene on the activities of rat liver microsomal AHH, ADH and ALDH, and the excretion of their metabolites in urine. The AHH activities of the rats treated in combination and mixture were slightly higher and/or similar to those rats treated with single solvent, while the reverse effects were observed for ADH and ALDH. Similar effects were observed when the metabolites were examined in urine (p < 0.01). These results suggest that each solvent might interJkre the induction and action of ADH and ALDH, and decrease the excretion of their metabolites into urine.

• 한국독성학회:학술대회논문집
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• 한국독성학회 2002년도 Molecular and Cellular Response to Toxic Substances
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• pp.178-179
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• 2002

GX-12 is a naked DNA vaccine developed by Dong-A Pharmaceutical Company, Green Cross Company and Genexine for the treatment of HIV infection. GX-12 consists of four separate plasmids. This study was performed to investigate the autoimmunogenic potential of GX-12 using primary and secondary PLNA method, and to examine the induction of autoantibodies in mice immunized with GX-12.(omitted)

• 한국독성학회:학술대회논문집
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• 한국독성학회 2003년도 추계학술대회
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• pp.138-138
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• 2003

Tributyltin (TBT) is also recognized as an endocrine disrupter. Organotin compounds such as TBT are widely used as agricultural biocides, and for antifouling paint of ship bottoms and of fishing nets. In this study, we investigated the role of nur 77 in induction of apoptosis in TBT-induced leydig cells.(omitted)

• 한국독성학회:학술대회논문집
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• 한국독성학회 2002년도 Molecular and Cellular Response to Toxic Substances
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• pp.176-176
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• 2002

In order to investigate whether the induction of micronucleus and aneuploidy in human lymphocytes by Hydroquinone (HQ) is associated with genetic polymorphisms of CYP1A1, GSTM1, GSTT1, NQO1 gene, the cytokinesis-block micronucleus (CBMN) assay in combination with fluorescence in situ hybridization (FISH) technique using specific centromeric probes for chromosome 7 and 8 and PCR-RFLP based genotyping for 30 healthy people were performed.(omitted)

• Journal of Plant Biotechnology
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• 제41권1호
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• pp.33-37
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• 2014

Lychnis wilfordii (Regel) Maxim is a rare and valued ornamental plant. Germination rate reached 46.6% when seeds were treated with $100mg{\cdot}l^{-1}$ GA (Gibberellic acid). The highest callus induction was observed in the leaf explants of the seedlings on MS medium containing specific concentrations of $0.5mg{\cdot}l^{-1}$ BA ($N^6$-benzyladenine) and $3.0mg{\cdot}l^{-1}$ NAA (a-naphthalene acetic acid). The adventitious shoot was formed in 97.3% of calli on 1/2 WPM (Woody Plant Medium) medium. Shoot elongation of in vitro propagated plantlets was no difference among various medium. The plantlets grew well after transferring to the pot. This in vitro propagation protocol should be useful for conservation of this endangered plant.

• Structural Engineering and Mechanics
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• 제90권6호
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• pp.531-542
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• 2024

This study proposes a ground anchor using electromagnetic induction and utilizes an extended structure using hinges and links and mounting and sensing using electromagnets. The aim is to secure the anchor force, excluding grout, and to secure various sensing capabilities, including ground behavior. We propose a design based on the drilling diameter of 150 mm, and the materials used were STS304 and Aluminum 6061-T6. Computerized analysis was performed to confirm structural safety and functional implementation. The pull-out experiment was conducted by simulating the bedrock environment on a model earthwork as an experiment to check whether anchor force was generated by the insertion and tension of the anchor. The environmental pollution of grout, the difficulty of removing strands, and the inability to check whether the anchor is seated, which were pointed out as disadvantages of the existing ground anchor, were solved. Therefore, this study suggest that it can be effectively utilized as a secure and monitored anchoring solution in eco-friendly construction practices, including the installation of landslide prevention barriers.

• 신재생에너지
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• 제10권3호
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• pp.31-38
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• 2014

The importance of energy is growing according to the energy shortage and environmental concerns. Accordingly, in order to solve the problems about the use of fossil fuel, a renewable energy sources are needed. Global renewable energy power industry's position in the renewable energy market becomes important and new technology development is also essential. MG set composed by the induction motor and permanent magnet synchronous generator for simulating a renewable energy source is based on a suitable experiment equipment. The torque generated by applying a voltage to the induction motor in MG set is used as an input of the permanent magnet synchronous generator. In Psim simulation, the characteristics of the induction motor model was formulated and the output torque characteristics of the motor was controlled using the induction motor side inverter, In this paper, the comparison analysis between Psim simulation and the output characteristics of the MG set is performed in order to identify a renewable energy power system more accurately.

• 한국연초학회지
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• 제13권1호
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• pp.19-26
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• 1991

Ames test using special strains which are histidine requiring mutant of Salmonella typhimufium , is widely utilized as short-term bioassay to evaluate the genotoxicity of chemicals. This method requires the liver microsome(5-9 fraction) to provide mammalian metabolism of the compounds, Therefore, the mutagenic potency of the chemicals is affected by not only the intrinsic properties of them but also the efficiency of the in vitro microsomal activation system. For this reason, the complex mixtures such as environmental pollutants from occupational sources, natural products or cigarette smoke condensates(CSC) , might be often appeared the false results. Induction of sister chromatid exchange(SCE) in cultured cells is known as another sensitive and powerful tool for the measurement of genotoxicity and the method has also an advantage which is able to apply to the in vitro and in vivo systems. In the present study, the inducibilities of revertant colonies in tester strain TA98 and SCE in human Iymphocytes by positive controls and total particulated materials(TPM) obtained from various brand(domastic and imported) cigarettes were compared in order to investigate whether the results in Ames test are in agreement with those in SCE analysis. The mutagenic activities of well known mutagens such as B(a)P showed excellent dose-response in the both methods although the induction mechanism was different each other, but cyclophosphamide resulted such effect only in SCE analysis. Most TPM tested showed a similar pattern in the mutagenic activities in those methods. However, only two(one imported brand and one domestic sample cigarettes) among the TMP obtained from various cigarettes appeared the higher induction in SCE than Ames test.

• The Plant Pathology Journal
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• 제20권4호
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• pp.258-263
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• 2004

Ripe fruit of pepper (Capsicum annuum) showed resistance to Colletotrichum gloeoporioides, but unripe fruit was susceptible. We previously isolated the PepTLP gene that induced in both unripe and ripe fruit by fungal infection and wound, and only in ripe fruit by jasmonic acid (JA) treatment. To examine further regulation of PepTLP, the action of specific agonist and antagonists of known signaling effector on the .PepTLP expression by fungal infection, wound, and JA was investigated. A similar dephosphorylation event negatively activated all the PepTLP expression in the ripe fruit by fungal infection, wound, and JA. The induction of PepTLP expression by wound is differentially regulated via phosphorylation and dephosphorylation step during pre- and post-ripening, respectively. In addition, the induction of PepTLP expression in the ripe fruit by wound and JA is differentially regulated via dephosphorylation and phosphorylation step, respectively. Only both wound and JA treatment has synergistic effect on the PepTLP expression in the unripe fruit. Both SA and JA treatments on the unripe fruit, and both wound or JA and SA on the ripe fruit could not do any effect on the expression of PepTLP. These results suggest that the induction of PepTLP expression is differentially regulated via complex regulatory system against fungal infection, wound, and JA treatment during pre- and post-ripening of pepper fruit.