• Title/Summary/Keyword: $MgB_2$ wires

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Additional fixation using a metal plate with bioresorbable screws and wires for robinson type 2B clavicle fracture

  • Shin, Woo Jin;Chung, Young Woo;Kim, Seon Do;An, Ki-Yong
    • Clinics in Shoulder and Elbow
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    • v.23 no.4
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    • pp.198-202
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    • 2020

  • Simple clavicle fractures can achieve satisfactory results through conservative treatment, and the less frequency of nonunion. Non-union or malunion can occur in displaced clavicle fractures or comminuted shaft fractures. Treatment of displaced comminuted clavicle shaft fractures is performed by holding together the free fragments with interfragmentary screws or wires and fixing them to the clavicle with a plate. Therefore, we performed interfragmentary fixation using open reduction and internal fixation with bioresorbable screws (Mg-Ca alloy, Resomet bioresorbable bone screw; U&I Corp.) and bioresorbable wires (Mg-Ca alloy, Resomet bioresorbable K-wire and pin, U&I Corp.) for displaced comminuted clavicle fractures (Robinson type 2B) and additionally used a metal plate. We expected decreased irritation and infection due to absorption after surgery. We report four cases that were treated in this way.

  • https://doi.org/10.5397/cise.2020.00262 인용 PDF KSCI

Comparison of superconducting generator with 2G HTS and MgB2 wires

  • Park, S.I.;Kim, J.H.;Le, T.D.;Kim, H.M.
    • Progress in Superconductivity and Cryogenics
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    • v.15 no.4
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    • pp.48-52
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    • 2013

  • This paper compares the features of second generation (2G) High Temperature Superconducting (HTS) field coil with those of magnesium diboride ($MgB_2$) field coil for a 10 MW class superconducting generator. Both coils can function effectively in their respective magnetic flux density range: 10-12 T for 2G HTS field coil, 2 T for $MgB_2$ superconducting field coil. Even though some leading researchers have been developing 10 MW class superconducting generator with 2G HTS field coil, other research groups have begun to focus on $MgB_2$ wire, which is more economical and suitable for mass production. However 2G HTS wire is still appealing in functions such as in-field property and critical temperature, it shows higher in-field property and critical temperature than $MgB_2$ wire.

  • https://doi.org/10.9714/psac.2013.15.4.048 인용 PDF KSCI

Enhancement of a mechanical property of metal sheaths (Cu and Nb) of MgB2 superconducting wires by E-beam irradiation

  • Kim, C.J.;Lee, T.R.;Jun, B.H.
    • Progress in Superconductivity and Cryogenics
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    • v.24 no.3
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    • pp.30-34
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    • 2022

  • Effects of electron beam (EB) irradiation on the mechanical strength of Cu (conducting sheath) and Nb (diffusion barrier) of Cu/Nb/MgB2 superconducting was investigated. Wire- and tape-type Cu/Nb/MgB2 samples were irradiated at E-beam energy of 2.5 MeV and 5 mA and a maximum E-beam dose was 5×1017 e/m2. The hardness value of Cu and Nb region was measured by the Vickers micro-hardness method. In the case of the wire sample, the hardness of Cu and Nb increased proportionally as the dose was increased up to 5×1017 e/m2, whereas in the case of the tape sample, the hardness increased up to a dose of 0.5×1017 e/m2, and decreased slightly 5×1017 e/m2. The hardness increase of Cu and Nb is believed to be due to the decrease of the deformability of Cu and Nb due to the defects formed inside the materials by E-beam irradiation.

  • https://doi.org/10.9714/psac.2022.24.3.030 인용 PDF KSCI