プラズマディスラプション模擬損傷材の残存疲労寿命に及ぼす繰返し熱負荷の影響

Surface damage of type 304 stainless steel, which is one of the candidates for the first-wall structural material in a fusion reactor, at cyclic plasma disruption loadings is simulated by a high heat flux Neutron Beam Injection. Influences of the cyclic thermal loads on the residual fatigue life are studied. The results obtained are summarized as follows. (1) The maximum tensile residual stresses near the damaged surface increased with increasing thermal loading cycles from 1 to 5. (2)The fatigue strength and the fatigue limit of the specimen subjected to 5 cycles of thermal loading and those for 1 cycle are the same. (3) A critical crack length, 2b_e to vanish from sight caused by thermal loading is important for the evaluation of the residual fatigue life. If the defect length, 2b 2b_e, fatigue crack growth occurs due to the cyclic thermal load.textapplication/pdfjournal articl

Search for Invisible Decay of the Υ(1S)

We report results of a search for the invisible decay of the Υ(1S) via the Υ(3S)→π+π-Υ(1S) transition using a data sample of 2.9 fb^{-1} at the Υ(3S) resonance. The data were collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No signal is found, and an upper limit for the branching fraction at the 90% confidence level is determined to be B(Υ(1S)→invisible)＜2.5×10^{-3}.journal articl

Evidence for D0-0 Mixing

journal articl

Soluble c-kit receptor mobilizes hematopoietic stem cells to peripheral blood in mice

鳥取大学博士(医学)thesi

Change in Carrion Available to Scavengers due to Climate Change 1950–2000: Dynamic Model

<p>Shown is the mean monthly change (± standard error) in carrion available to scavengers due to climate change from 1950 to 2000 with and without wolves in our dynamic model.</p

電磁的横波による線形電子加速器開発への基礎的研究

宇都宮大学博士（工学）1999text学位論文 / Thesis or Dissertationthesi

Winter Snow Depths 1948–2003 at Mammoth Hot Springs

<p>Average monthly SDTH for November (A), December (B), January (C), February (D), March (E), and April (F) 1948–2003 at the Mammoth Hot Springs weather site.</p

Winter Snow Depths 1948–2003 at Tower Falls

<p>Average monthly SDTH for November (A), December (B), January (C), February (D), March (E), and April (F) 1948–2003 at the Tower Falls weather site.</p

Changes in the Last Day of Snow Cover over the Last 55 Years at Mammoth Hot Springs and Tower Falls

<p>Last day of snow cover is reported as the number of days from January 1 of that year until the first day of bare ground. Changes in last day of snow cover over the last 55 y are shown for Mammoth Hot Springs (A) and Tower falls (B). The number of days from January through March that temperatures exceeded freezing at Mammoth (C) and Tower (D) are increasing with time.</p

Reduction in Winter Carrion Available to Scavengers due to Climate Change 1950–2000: Statistical Model

<p>Shown are percent reductions (± standard error) in winter carrion available to scavengers due to climate change from 1950 to 2000 with and without wolves in our statistical model. * Significant difference between the two scenarios.</p