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Volume 2 (1988)
- Issue 2 Pages 75-
- Issue 1 Pages 3-
Volume 2, Issue 1
Displaying 1-7 of 7 articles from this issue
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1988 Volume 2 Issue 1 Pages 3-28
Published: April 15, 1988
Released on J-STAGE: March 16, 2010
JOURNAL FREE ACCESSDownload PDF (5340K) -
Hidetaka IMAI1988 Volume 2 Issue 1 Pages 29-35
Published: April 15, 1988
Released on J-STAGE: March 16, 2010
JOURNAL FREE ACCESSA review article of the terminology and definition concerned with the measurement uncertainty is presented. The result of a comparison on the vocabulary appeared in several Japanese Industrial Standards and international standards published by international organizations is described. The measurement uncertainty is expressed by two components. One is estimated by statistical methods and expressed by statistics such as standard deviation, whereas the other can not be evaluated by statistics and estimated by another method.
How to express the measurement uncertainty is one of the urgent requirements in measurement science and some approaches have been proposed recently for the presentation of overall accuracy. The overall accuracy has to be expressed by both components of the degree of bias and the degree of dispersion.View full abstractDownload PDF (1294K) -
Ryuzo Takagi1988 Volume 2 Issue 1 Pages 36-42
Published: April 15, 1988
Released on J-STAGE: March 16, 2010
JOURNAL FREE ACCESSMolecular dynamics (MD) method is briefly reviewed. Then practical calculation of properties of liquids is shown. As for properties, internal energy, enthalpy, pressure, diffusion coefficient, pair correlation function are taken, and their experimental and calculated results are compared.View full abstractDownload PDF (1120K) -
Akihiko Miyano, T. Ohsawa, K. Inaba, K. Kamiya, A. Mizutani, N. Miyano1988 Volume 2 Issue 1 Pages 43-48
Published: April 15, 1988
Released on J-STAGE: March 16, 2010
JOURNAL FREE ACCESSThe moisture absorption on the surface of building interior has a function of relieving room air from excessive dryness and humidity.
This paper describes the character of moisture absorption in case of interior temperature changing due to a variation of outside temperature and solar radiation.View full abstractDownload PDF (797K) -
Eizi Nemoto, Kensuke Kawashimo, Akihisa Inoue, Tsuyoshi Masumoto1988 Volume 2 Issue 1 Pages 49-52
Published: April 15, 1988
Released on J-STAGE: March 16, 2010
JOURNAL FREE ACCESSThis paper attempts to clarify the significance of the thermal conductivity of a La1.8Sr0.2CuO4-y superconductor. The onset and zero-resistance temperature of the La-Sr-Cu-O superconductor were 42K and 30.5K, respectively. The thermal conductivity decreased gradually with decreasing temperature for the normal conductive state in the temperature range of 160 and 40K, i.e., 23.8W/(m·K) at 160K and 17.4W/(m·K) at 40K. In the superconducting transition range, the thermal conductivity increased very greatly with decreasing temperature a maximum value of 21.7W/(m·K) at 23K and decreased greatly with decreasing temperature. A similar sharp peak of the thermal conductivity has been found for Y-based oxide superconductors and hence it is concluded that the sharp increase of thermal conductivity is a common characteristic for high transition temperature (Tc) oxide superconductors.View full abstractDownload PDF (727K) -
Yoshio TAKAHASHI, Masayuki KAMIMOTO, Yoshiyuki ABE, Yuji NAGASAKA, Aki ...1988 Volume 2 Issue 1 Pages 53-58
Published: April 15, 1988
Released on J-STAGE: March 16, 2010
JOURNAL FREE ACCESSPentaerythritol is a promising latent thermal storage material with transition temperature 188°C. Use of slurry of pentaerythritol and heat transfer oil (Hitherm PS-5) can enhance heat conduction in the storage material. In the present study, heat capacity and heat of transition were measured by differential scanning calorimetry on pentaerythritol and Hitherm PS-5. Thermal conductivities of Hitherm PS-5 and the slurry with 70 weight % of pentaerythritol were measured by the transient hot-wire method. The data of heat capacities and thermal conductivities were correlated by linear equations. The thermal conductivity of the slurry showed a discontinuity at the transition temperature due to a change in crystal structure.View full abstractDownload PDF (1110K) -
Hiromichi Ohta, In-Kook Suh, Yoshio Waseda, Akira Shika1988 Volume 2 Issue 1 Pages 59-63
Published: April 15, 1988
Released on J-STAGE: March 16, 2010
JOURNAL FREE ACCESSThermal diffusivity of various manganese-zinc ferrite specimens has been measured at temperatures between 873 and 1273K by laser flash method. The specimens pressed by 3t/cm2 show slightly high thermal conductivity compared with those pressed by 1 or 2t/cm2. The specimens of higher content with the additives such as CaO and SiO2 indicate lower thermal diffusivity.View full abstractDownload PDF (814K)
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