TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
Search
Advanced search
OR
Browse
Search
Volume 41, Issue 8
Displaying 1-6 of 6 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
Preface
Fundamental Cryogenic Engineering
  • [title in Japanese]
    Ryuji MAEKAWA
    2006 Volume 41 Issue 8 Pages 350
    Published: 2006
    Released on J-STAGE: February 15, 2007
    DOIhttps://doi.org/10.2221/jcsj.41.350
    JOURNAL FREE ACCESS
    Download PDF (173K)
  • Cryocooler [1]
    — Fundamental Review of Cryogenic Refrigerators —
    Yoichi MATSUBARA
    2006 Volume 41 Issue 8 Pages 351-358
    Published: 2006
    Released on J-STAGE: February 15, 2007
    DOIhttps://doi.org/10.2221/jcsj.41.351
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    In general, a cryocooler can be developed using an object-oriented design concept applied to a prototype. There are many various demands, such as, cooling temperature, cooling capacity, reliability and cost, efficiency. On the other hand, a number of cryocoolers has already been developed. Therefore, the basic characteristics of these cryocoolers should be clarified to ascertain their adaptability to current demands. From this perspective, this fundamental cryogenic refrigerator review explains the functions of individual components for specific cryocoolers. Example cryocoolers include a GM-cooler, Stirling cooler, pulse-tube cooler and thermo-acoustic cooler.
    View full abstract
    Download PDF (661K)
Originals
  • High Magnetic Field Transport Properties of NEG123 and Y123 Bulk Materials
    Masafumi NAMBA, Satoshi AWAJI, Nobuyuki ISONO, Kazuo WATANABE, Miryala ...
    2006 Volume 41 Issue 8 Pages 359-364
    Published: 2006
    Released on J-STAGE: February 15, 2007
    DOIhttps://doi.org/10.2221/jcsj.41.359
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The bulk material comprised of (Nd, Eu, Gd)Ba2Cu3Ox(NEG123) shows a high irreversibility field over 14 T at 77.3 K. In order to study the origin of the high irreversibility field, transport measurements of NEG123 and Y123 bulk samples were performed as functions of temperature, high magnetic field and field angle, and transport properties were compared with each other. Dip structures for the angular dependence of resistivity are observed around B//c for all samples. These results indicate that c-axis correlated disorder exists. The NEG123 bulk sample with a larger dip shows a higher irreversibility temperature. In addition, we found that the differences of the irreversibility temperature between on and 12° off the dip are scaled universally as a function of the depth of the dip for NEG123 and Y123 bulk samples. It is considered that c-axis correlated disorder is important for high irreversibility fields.
    View full abstract
    Download PDF (1216K)
  • Arrangement of Magnets for a Magnetically Targeted Drug Delivery System
    — Guide Efficiency of Ferromagnetic Particles —
    Fumihito MISHIMA, Suketaka FUJIMOTO, Shin-ichi TAKEDA, Yoshinobu IZUMI ...
    2006 Volume 41 Issue 8 Pages 365-370
    Published: 2006
    Released on J-STAGE: February 15, 2007
    DOIhttps://doi.org/10.2221/jcsj.41.365
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    We have been developing a magnetically targeted drug delivery system (MT-DDS), which involves a drug having small biocompatible magnetic particles and a high-gradient magnetic field to guide it in the targeted region. Efficient drug navigation requires that the drug be prevented from accumulating on the wall of the blood vessel when in route to the targeted region, thus an appropriate magnetic field must be designed. Magnet arrangement was studied to obtain an efficient drug delivery system by calculating the trajectory of the ferromagnetic particles in the blood vessel.
    View full abstract
    Download PDF (896K)
Cryogenic Systems & Techniques
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top