Text and figures are copied from an earlier paper published in the
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Figures and conclusions in two papers are basically the same: Results and discussion sections are also similar. Some examples are given below: Acta AstronauticaVol.48, 59-70 (2001) J. Jap. Soc.of Microgravity Appl. Vol.16, No.4, 234-244 (1999)