• Proceedings of the Korea Contents Association Conference
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• 2011.05a
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• pp.549-550
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• 2011

본 논문은 다구찌 설계방법을 이용하여 이동식 정수 시스템의 구조물에 대한 최적설계 조건을 확보하기 위하여 유한요소해석을 수행하였다. 다구찌 설계방법은 이동식 정수 시스템 구조물의 설계인자 중 가장 큰 영향을 미치는 파라미터를 고찰하고 최적화 하는데 유용한 결과를 제시 하였다. 다구찌 설계방법으로 수행된 민감도 해석 결과에 따르면 이동식 정수 시스템 구조물의 최적설계에 필요한 중요 인자로 세로방향 보강빔의 수량을 보여주고 있다. 결과적으로 안전하면서 효율적인 이동식 정수 시스템 구조물을 제작하기 위한 최적설계 시 가로방향 보강빔 수량과 바닥판의 두께보다는 세로방향 보강빔의 수량이 매우 중요한 설계인자라는 해석결과를 제시하였다.

• 한국연소학회:학술대회논문집
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• 2001.11a
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• pp.153-160
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• 2001

The combustion test used DTF was performed to obtain the characteristics of NOx emission and reduction. In this test, major factor of NOx emission was a stoichiometric air ratio. At the onset of combustion to be rich oxygen, NOx was produced rapidly. Optimum condition for NOx reduction was formed under about AR:0.7 in the combustion test of Alaska coal. Investigations were undertaken with 200KW(th) test combustor. In combustion test, the major variables were coal feed ratio of center/outer, stoichiometric air ratio at the onset of combustion. The lowest NOx emission, 182ppm(6% O2 base), was achieved at about AR:0.6 of the first combustion stage with low NOx burner. Also, unburned carbon content of char collected in this combustion condition was about 1wt%.

• Proceedings of the KIEE Conference
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• 2000.07a
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• pp.249-251
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• 2000

This paper describes how computer simulations can be used to predict harmonic problems before they occur, and evaluate corrective alternatives prior to implementation PTW(Power Tools for Windows) is used for simulations to the real model system. Harmonic load flow studies, voltage/current distortion levels, harmonic frequency scans and filter selection method are analysed through detailed power system simulation.

• Proceedings of the KIEE Conference
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• 2006.10c
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• pp.560-562
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• 2006

In this paper, Correct problem in dead reckoning system and proposed about position error revision techniques of mobile robot to use RFID tag for position awareness. With the dead reckoning system, as the accumulation of error are unavoidable because of accumulation of informations as the time passage, so it is impossible to get correct information about posture, including torrent direction, movement distance, etc. As one of compensation method, the suggested method is that after selecting special area (corridor), compensate absolute location information by arranging two line of RFID tag along two side of corridor. Through this suggested method, it could be used when robot wants to move in limited areas.

• Proceedings of the KIEE Conference
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• 2006.11a
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• pp.186-188
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• 2006

우리나라의 전력산업이 발전함에 따라 그에 따른 전력수요 역시 급등하게 되었다. 기존의 수요관리 등의 방법은 에너지사용 자체의 감소가 아닌 에너지 사용의 효율적 배분을 통하여 수요의 피크를 줄여주고 계통의 부담을 줄여주는 방법이다. 현재의 한정된 발전량은 보다 효율적인 에너지의 사용을 필요로 하게 되었다. 이에 정부는 에너지의 효율적인 사용을 위해 효율향상 제도의 계획수립, 시행 및 평가를 도입하였다. 경제성장에 따른 GDP의 증가는 전력소비량을 증가시켜 그에 따른 환경문제를 야기하고 있다. 선진국에서는 기후변화협약에 따른 환경개선을 위해 에너지부문의 효율향상에 많은 노력을 기울이고 있으며, 우리나라도 이러한 움직임에 동참하고 있다. 이에 본 논문에서는 에너지와 GDP와의 상관관계, 세계 각국의 효율향상 제도를 분서함으로써 우리나라의 효율향상제도의 개선방안을 도출하여 제시하고자 한다.

• Proceedings of the PSK Conference
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• 2002.10a
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• pp.406.3-407
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• 2002

Analysis of interferon alpha (IFN) modified with high molecular weight branched PEG was performed by capillary electrophoresis (CE) and MALDI-TOF mass spectrometry (MALDI-TOF MS). IFN was modified by the reaction of amine residues with an active ester of monomethoxy polyethylene glycol at various molar ratios. As a CE method. capilary electrophoresis sodium dodecyl sulfate nongel sieving (CE-SDS NGS) was performed using an uncoated capilary filled with a hydrophilic replaceable polymer network matrix. (omitted)

• Proceedings of the KSME Conference
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• 2003.04a
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• pp.1578-1583
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• 2003

LAVA-ERVC experiments have been performed to investigate the effect of insulation design features on the coolability in case of the external reactor vessel cooling (ERVC). All the 4 tests have been performed using Alumina iron thermite melt as a corium simulant. Due to the limited steam venting through the insulation, steam binding occurred inside the annulus in the KSNP case simulation. On the contrary, in the tests which were performed for simulating the APR1400 insulation design, sufficient water ingression and steam venting through the insulation lead to effective cool down of the vessel characterized by nucleate boiling. It could be found from the experimental results that modification of the insulation design allowing sufficient ventilation could increase the positive effects of the external reactor vessel cooling.

• Proceedings of the KSME Conference
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• 2003.04a
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• pp.1485-1490
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• 2003

This paper is the analysis of thermal and fluid in solar concentration absorber with various tilt angle and opening ratio of absorber entrance. The purpose of this study is to develop optimum solar concentration absorber, and the parameters for the study are the opening ratio of absorber entrance and the tilt angle. The aspect ratio of absorber was fixed at 0.64, and opening ratio was changed from 0.1 to 1.0. The finite volume method with SIMPLE computational algorithm are used and analyzed the heat transfer in absorber inside walls.

• Archives of Pharmacal Research
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• v.9 no.1
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• pp.15-18
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• 1986

Various naturally occuring methylated amino acid derivatives were resolved on high performance liquid chromatography (HPLC), using o-phthadialdehyde as a fluorogenic reagent. We separated .$\varepsilon$-N-monomethyllysine, $\varepsilon$-N- dimethyllysine, and $\varepsilon$-N-acetyllysine from lysine derivatives. $N^{G}$-Monomethylarginine and $N^{G}$-dimethylarginine were separated from arginine derivatives. However, $\varepsilon$-N-monomethyllsine and $\varepsilon$-N-trimethyllysine, $N^{G}$, $N^{G}$-dimethylarginine and $N^{G}$, $N^{G}$-dimethylarginine were not resolved under the conditions employed. S-Methylmethionine, S-methylcysteine, and 1-N-methylhistidine or 3-N-methylhistidine were clearly separated from their reference amino acids, even though 1-N-methyl-and 3-N-methylhistidine coul not be separated.

• Archives of Pharmacal Research
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• v.15 no.4
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• pp.379-381
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• 1992

Phellinus linteus was examined on its immunostimulating activities using an in vitro imunization and plaque forming cell assay. When lymphocytes were exposed to the extract of Phellinus linteus, the number of antibody forming cell was increased. In in vitro plaque forming cell assay, the immunostimulating effect was about 4.8 and 5.0 times of unimmunized control in polyconal and T-independent antibody response, respectively. Especially, Phellinus linteus significantly increased the antigenicity of TNP-LPS used as T-independent antigen. But Phellinus linteus did now show a mitogenic effect on B-lymphcytes. These results suggest that immunostimulating activity of Phillinus lintues might be associated with a functional stimulation of B-lympohocyte involved in humoral immune response.