• Title/Summary/Keyword: college of science and engineering

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RNA viruses in Pleurotus ostreatus

  • Lee, Jung-Sun;Lee, Nam-Joo;Ha, Si-Jung;Kim, So-Yeon;Kang, Eun-Joo;Kang, Dong-Suk;Rho, Hyun-Su;Chang, Moo-Ung;Lee, Jong-Kyu;Lee, Kyung-Hee;Lee, Hyun-Sook
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2004.10a
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    • pp.46-46
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    • 2004
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A Study on Angle Measurements Using an Optical Fiber (광섬유를 이용한 각도 측정 연구)

  • Kim, A-Hee;Kim, Ji-Sun;Oh, Han-Byeol;Kim, Jun-Sik;Goh, Bong-Jun;Lee, Eun-Suk;Jung, Hyon-Chel;Choi, Ju-Hyeon;Baek, Jin-Young;Jun, Jae-Hoon
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.64 no.4
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    • pp.605-611
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    • 2015
  • The measurement and analysis of angular change have been studied in many fields. This study developed an angle measurement technique with optical fiber and photodiode. The position and attached angle of photodiode were investigated to find the proper combination of parameter. The results showed that the increased measuring range was achieved when the position of detector was away from the center of rotation. Inverse mathematical model was used to obtain angular changes with an optical fiber. The applications of this study include in optical sensor, joint angle measurement, and sport science.

Optical Method to Determine Gait Parameters Using Position Sensitive Detector

  • Jung, Gu-In;Kim, Ji-Sun;Lee, Tae-Hee;Choi, Ju-Hyeon;Oh, Han-Byeol;Kim, A-Hee;Goh, Bong-Jun;Kim, Jun-Sik;Lee, Eun-Suk;Jun, Jae-Hoon
    • Journal of Electrical Engineering and Technology
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    • v.10 no.5
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    • pp.2155-2161
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    • 2015
  • This study suggests an optical method to measure cardinal of gait (step width, step length, and stride length) with position sensitive detector (PSD). The effect of reflector’s shape (flat and cylinder) on the PSD output voltage was examined for the application of the suggested system to real situations with a curved shape reflector (e.g. shoes). Various mathematical models were evaluated to find the optimal equation for the distance measurement. Considering the effect of shape on detected signal, the inverse polynomial model was developed. The suggested method is simple to operate, low in cost, small in size, and can evaluate gait parameters in real time. This method is expected to be useful in the field of rehabilitation and sport science

Facile Synthesis of CdTe Nanorods from the Growth of Te Nanorods

  • Xu, Weiwei;Niu, Jinzhong;Zheng, Shuang;Tian, Guimin;Wu, Xinghui;Cheng, Yongguang;Hu, Xiaoyang;Liu, Shuaishuai;Hao, Haoshan
    • Journal of the Korean Chemical Society
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    • v.61 no.4
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    • pp.185-190
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    • 2017
  • One-dimensional CdTe nanorods (NRs) are obtained by the reaction of various Cd precursors with single crystalline Te nanorod templates, which are pre-synthesized from Te precursors by a simple and reproducible solvothermal method. Throughout the process, the diffraction intensity of different crystal facets of single crystalline Te NRs varied with reaction times. Finally, by alloying Cd ions along the axial direction of Te NRs, polycrystalline cubic phase CdTe NRs with diameters of 80-150 nm and length up to $1.2-2.4{\mu}m$ are obtained. The nucleation and growth processes of Te and CdTe NRs are discussed in details, and their properties are characterized by XRD, SEM, TEM, Raman scattering, and UV-vis absorption spectra. It was found that the key elements of synthesizing CdTe NRs such as reaction temperatures and Cd sources will strongly influence the final shape of CdTe NRs.