• Title/Summary/Keyword: kwangju

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The Development of 3-D Robot Simulator Using OpenGL (OpenGL을 이용한 3-D 로봇시뮬레이터 개발)

  • Kim, Seung-Jun;Choi, Eun-Seok;Ahn, Byung-Ha
    • Proceedings of the KIEE Conference
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    • 2000.07d
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    • pp.2877-2879
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    • 2000
  • 본 연구에서는 로봇의 3가지 기본모델에대해 OpenGL을 이용하여 3-D 로봇시뮬레이터를 구현하였다 또한. 개발된 로봇시뮬레이터에 간단한 출력제어기를 적용하여 제어알고리즘의 특성이 잘 나타나는지를 확인하였고, 실제 로봇의 하드웨어적 특성을 적용하여 로봇시뮬레이터와 실제로봇에서의 실험결과를 비교하였다.

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FDTD Simulation of Photonic-Crystal Lasers and Their Relaxation Oscillation

  • Song, G. Hugh;Kim, Soan;Hwang, Kyung-Hwan
    • Journal of the Optical Society of Korea
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    • v.6 no.3
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    • pp.87-95
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    • 2002
  • We have developed an finite-difference time-domain program that can analyze photonic devices with gain and/or dispersion. As an example, a two-dimensional photonic-crystal laser is simulated. The simulation can show the relaxation oscillation behavior at extremely high current injection.

Characterization of Single Channel Properties of Cardiac $Ca^{2+}$ Release Channel in Rats Treated with the Immunosuppressant Drug, Cyclosporin A

  • Lee, Eun-Hui;Park, Chul-Seung;Kim, Do-Han
    • Proceedings of the Korean Biophysical Society Conference
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    • 1997.07a
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    • pp.29-29
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    • 1997
  • Cyclosporin A (CsA) is widely used to suppress rejection in rcipients of solid organ or bone marrow transplants. A variety .of toxic side effects of this agent such as cardiotoxicity have been reported. However the underlying molecular mechanisms for the cardiotoxicity are not well resolved.(omitted)

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Effects of Platycodi Radix on dimethylnitrosamine-induced hepatic fibrosis in rats

  • Lee, Kyung-Jin;Choi, Chul-Yung;Jeong, Hye-Gwang
    • Proceedings of the PSK Conference
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    • 2002.10a
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    • pp.288.2-288.2
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    • 2002
  • Herbal medicines are increasingly being utilized to treat a wide variety of disease processes. We previously reported that aqueous extract from the roots of Platycodon grandiflorum A. DC (Campanulaceae), Changkil (CK). had hepatoprotective effects against acetaminophen induced liver injury. In the present study, we assayed the preventive and therapeutic effects of CK on experimental hepatic fibrosis induced by dimethylnitrosamine (DMN) in rats. (omitted)

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Effect of the Chemical Reduction by Ferrous ions on Chromate Toxicity to Daphnia magna

  • Park, Kyeong S.;Man B. Gu;Kim, Sang D.
    • Proceedings of the Korea Society of Environmental Toocicology Conference
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    • 2001.05a
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    • pp.122-122
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    • 2001
  • The reaction kinetics of hexavalent chromium with ferrous ions were studied to determine the influence of reduction on the toxicity of chromium to aquatic organisms. The changes in chemical forms of the chromate in the presence of ferrous ions were examined in a bioassay system using Dphnia magna as a test organism. (omitted)

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Effects of Cone Dimension on the Cyclone Performance

  • R.B. Xiang;Park, S.H.;Lee, K.W.
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2000.04a
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    • pp.221-223
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    • 2000
  • Cyclones are among the oldest types of industrial particulate control equipment and air sampling device. Until now, a great number of experimental studies have been performed on cyclones. In these studies, almost all of the eight cyclone dimensions were varied and Changes in cyclone performance produced by these variations were studied. However, very little information is available on the effects of the cone bottom diameter. (omitted)

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A Study on Synthesis of Lignin Peroxidase and Degradation of Pentachlorophenol(PCP) by Phanerochaete chrysosporium (Phanerochaete chrysosporium에 의한 Lignin Peroxidase의 생성과 Pentachlorophenol(PCP)의 분해)

  • Choi, Sue-Hyung;Song, Eun;Gu, Man-Bock;Moon, Seung-Hyeon
    • KSBB Journal
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    • v.13 no.3
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    • pp.223-230
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    • 1998
  • Experiments for lignin peroxidase production have been conducted by aerobic fermentation of Phanerochaete chrysosporium under low shear rate and enriched oxygen environment. The result of flask cultures of white rot fungus indicated that high oxygen concentration and low shear force were essential for enhancement of lignin peroxidase production. Pentachlorophenol was readily degraded by lignin peroxidase produced in nutrient limited flask cultures. Polyurethane foam was fond to be an effective immobilization matrix of P. chrysosporium.

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