Simultaneous Measurements of Thermal Conductivity and Diffusivity of Hen Egg-White Lysozyme Crystals Using a Transient Short Hot Wire Method and Magneto-Archimedes Effect

• Maki Syou

  Faculty of Pharmacy, Osaka Ohtani University

• Fujiwara Seiji

  Department of Mechanical Engineering, National Institute of Technology, Akashi College

• Maekawa Ryunosuke

  Department of Mechanical Engineering, National Institute of Technology, Akashi College

• Tanaka Seiichi

  Department of Mechanical Engineering, National Institute of Technology, Akashi College

• Hagiwara Masayuki

  Center for Advanced High Magnetic Field Science, Graduate School of Science, Osaka University

Bibliographic Information

Other Title

• 非定常短細線加熱法と磁気アルキメデス効果を用いた卵白リゾチーム結晶の熱伝導率と熱拡散率の同時測定
• ヒテイジョウ タンサイセン カネツホウ ト ジキ アルキメデス コウカ オ モチイタ ランパク リゾチーム ケッショウ ノ ネツ デンドウリツ ト ネツ カクサンリツ ノ ドウジ ソクテイ

Abstract

By using simultaneously the magnetic levitation technique and the transient short hot wire method, thermal conductivity and diffusivity of hen egg-white lysozyme (HEWL) crystals were measured for the first time. In order to attach the HEWL crystals onto the wire, crystal growth was carried out at the air-liquid interface of the solution by the magneto-Archimedes effect. Gadolinium chloride (a paramagnetic subject) was used as a precipitant agent of crystallization. The thermal conductivity and diffusivity of the HEWL crystals at the applied magnetic field (H) of μ₀H = 4.0 T and the temperature of 17.2 °C were determined to be 0.410 W/(m·K) and 3.77 × 10^-8 m²/s 14 h later from the start of the crystal growth, and 0.438 W/(m·K) and 5.18 × 10^-8 m²/s 20 h later, respectively. In this measurement, the concentrations of HEWL and GdCl₃ were 6.53 wt% and 0.362 mol/kg, respectively, and the pH was 3.30.

Journal

• Netsu Bussei

  Netsu Bussei 30 (3), 131-139, 2016

  JAPAN SOCIETY OF THERMOPHYSICAL PROPERTIES

Keywords

• magneto-Archimedes effect
• transient hot wire method
• lysozyme
• magnetic levitation

Details

• CRID: 1390001204665373184
• NII Article ID: 130005171625
• NII Book ID: AN10064743
• DOI: 10.2963/jjtp.30.131
• ISSN: 1881414X
• ISSN: 0913946X
• NDL BIB ID: 027624908
• Web Site: http://id.ndl.go.jp/bib/027624908
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027624908
• Web Site: https://www.jstage.jst.go.jp/article/jjtp/30/3/30_131/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed