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Goto, M.,Yamamoto, T.,Han, S.Z.,Lim, S.H.,Kim, S.,Iwamura, T.,Kitamura, J.,Ahn, J.-H.,Yakushiji, T.,Lee, J. Elsevier 2019 Materials science & engineering. properties, micro Vol.747 No.-
<P><B>Abstract</B></P> <P>The effect of microstructure on the fatigue strength of age-hardened Cu–6Ni–1.5Si alloy was investigated in this study. The aging was conducted at 500 °C for 0.5 h for the precipitation of disk-shaped δ-Ni<SUB>2</SUB>Si precipitates (continuous precipitates) and 3 h for the discontinuous precipitation of fiber-shaped, stable δ-Ni<SUB>2</SUB>Si precipitates to strengthen the Cu matrix. The tensile strength of 0.5 h-aged specimens was about 1.3 times greater than that of the 3 h-aged counterparts, but with inferior electrical conductivity. Despite the considerable difference in tensile strength, no notable difference in fatigue strength was observed between 0.5 h- and 3 h-aged specimens. The 3 h-aged specimens had superior electrical conductivity without sacrificing fatigue strength of the 0.5 h-aged specimens. The physical background of high-cycle fatigue strength in Cu–6Ni–1.5Si alloys with continuous precipitates and discontinuous precipitates is discussed considering the microstructure-sensitive behavior of fatigue cracks.</P>
Fast and reversible hydrogen storage in channel cages of hydroquinone clathrate
Han, K.W.,Lee, Y.J.,Jang, J.S.,Jeon, T.I.,Park, J.,Kawamura, T.,Yamamoto, Y.,Sugahara, T.,Vogt, T.,Lee, J.W.,Lee, Y.,Yoon, J.H. North Holland ; Elsevier Science Ltd 2012 Chemical physics letters Vol.546 No.-
Guest-free hydroquinone (HQ) clathrate was synthesized by the gas-phase reaction between host HQ and guest CO<SUB>2</SUB> molecules, followed by removal of the CO<SUB>2</SUB> guests by controlled heating process. The H<SUB>2</SUB> storage capacity of the guest-free HQ clathrate is highly sensitive to the loading pressure; at 298K, it was found to be 0.19 wt.% at 10MPa and 0.38 wt.% at 35MPa. In particular, the guest-free HQ clathrate also exhibits an extremely fast uptake and release of H<SUB>2</SUB> in a time scale of a few seconds.
h Ninomiya,T. Imai,T. Fujii,T. Suzuki,T. Fujita,T. Yamamoto,Y. Uesugi,Y. Kamada,Y. Takase,Y. Kudo,Y. Miura,Y. Ikeda,Y. M. Miura,A. Shimizu,A. Kimura,A. Morioka,A. Nishimura,A. Sagara,G. Kurita,H. Kubo 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III
The NCT Program, in which the present JT-60U is being modified into a superconducting coil machine, is discussed under nationwide collaboration in Japan. Its mission is to establish high-beta steady-state operation for DEMO and to contribute to ITER. NCT is designed to have potential to investigate such research.
EFFECTS OF CHRONIC INGESTION OF ANTHRANILIC ACID ON LACTATION IN MICE
Nagasawa, H.,Suzuki, M.,Sakagami, N.,Inatomi, H.,Yamamoto, K. Asian Australasian Association of Animal Productio 1989 Animal Bioscience Vol.2 No.1
Treatment of mice with 0.04% anthranilic acid (AnA) as drinking water resulted in an apparent stimulation of pup's growth and food intake of mothers in their first lactations associated with an increased rearing rate and no alteration in plasma prolactin level. AnA showed no significant effects on the day of vaginal opening, the pattern of estrous cycles, plasma growth hormone level and endocrine organ weights of the female and male offspring. The growth of male offspring was significantly retarded by AnA, however, their reproductivity was quite normal. The results indicate the AnA can simulate lactation of mice through little modulation of endocrine systems.