Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
removal from aqueous solutions; Cost-effectiveness & parametric effectsMaamoun, I.; Eljamal, R.*; Eljamal, O.*
Chemosphere, 312, Part 1, p.137176_1 - 137176_11, 2023/01
Times Cited Count：3 Percentile：40.21(Environmental Sciences)Katayama, Yoshinori; Inamura, Yasuhiro*
Nuclear Instruments and Methods in Physics Research B, 238(1-4), p.154 - 159, 2005/08
Times Cited Count：8 Percentile：52.8(Instruments & Instrumentation)It is well know that many substances have different structures in the crystalline state and they exhibit first-order structural phase transitions by a change in pressure. On the other hand, pressure-induced structural changes in the liquid and glassy states were supposed to be monotonous. The recent development of synchrotron radiation sources enables us to perform structural studies on liquids and glasses under high pressure and high temperature conditions. These studies revealed that the changes in the liquid and glassy states are not necessarily monotonous. We will present recent results on liquid phosphorus and silica glass.
Katayama, Yoshinori; Inamura, Yasuhiro*; Mizutani, Takeshi*; Yamakata, Masaaki*; Utsumi, Wataru; Shimomura, Osamu*
Science, 306(5697), p.848 - 851, 2004/10
Times Cited Count：148 Percentile：96.73(Multidisciplinary Sciences)Structural transformation between two liquid structures of phosphorus that occurred at about 1 GPa and 1000
C was investigated by in-situ X-ray radiography. When the low-pressure liquid was compressed, dark and round objects appeared in the radiograph. X-ray diffraction measurements confirmed that these objects were the high-pressure liquid. The drops grew and eventually filled the sample space. Decompressing caused the reverse process. The macroscopic phase separation supported the view that it was a first-order liquid-liquid phase transition. X-ray absorption measurements revealed that the change in density at the transition is about 40 % of the density of the high-pressure liquid.
Katayama, Yoshinori; Inamura, Yasuhiro
Journal of Physics; Condensed Matter, 15(1), p.S343 - S350, 2003/01
Times Cited Count：16 Percentile：61.19(Physics, Condensed Matter)Combination of synchrotron radiation sources and large volume presses enable us to make in-situ observations of structural change in liquids and glasses at high pressures up to several GPa and high temperatures up to 1500K. A number of methods, X-ray diffraction, XAFS, density measurement by means of X-ray absorption, viscosity measurements by means of radiography, are now applicable for this purpose. We have systematically studied elemental liquid and found that a characteristic structural change occurs in a narrow pressure-temperature range in liquid selenium. Moreover we have found a sudden structural change in liquid phosphorus. Experimental results on phosphorus support a view that the change is a first-order liquid-liquid transition. In the talk, results of current attempt to detect sudden structural change in silica glass will be presented. A preliminary result of X-ray diffraction study on liquid water under high-pressure will be also reported.
Usami, Noriko*; Yokoya, Akinari; Ishizaka, Shozo*; Kobayashi, Katsumi*
Journal of Radiation Research, 42(3), p.317 - 331, 2001/09
Times Cited Count：8 Percentile：28.35(Biology)The characteristics of DNA lesions produced by the phosphorus K-shell absorption in yeast cells were studied using monochromatized soft X-rays tuned to the phosphorus K-edge peak (2153 eV) and below the peak energy (2147 eV). The repaired fractions of DNA double-strand breaks (dsb) were measured relatively by using both a mutant, (
), which shows the temperature-sensitive dsb repair-deficient, and a wild-type strain. The repaired fraction of lesion in , which corresponds to the relative yield of dsb reparable by the 
pathway, was not affected by the phosphorus photoabsorption. Repair of the produced lesions in the wild-type cells was also measured by comparing the surviving fraction of the immediately plated cells to that of those cells plated after holding in a non-nutrient medium for 80 hrs. The recovery of the surviving fraction after the holding treatment was dependent upon the soft X-ray energy. These results suggest that irrepairable lesions are produced by the inner-shell photoabsorption of phosphorus in DNA, although its yield is small.
Kameda, Jun*; Nishiyama, Yutaka; Bloomer, T. E.*
Surface and Interface Analysis, 31(7), p.522 - 531, 2001/07
Times Cited Count：10 Percentile：28.84(Chemistry, Physical)This study describes intergranular segregation and embrittlement in several model ferritic alloys doped with Mn, P, S and/or Cu subjected to neutron irradiation, irradiation-equivalent thermal ageing (ETA) and post-irradiation annealing (PIA). Neutron irradiation produced a larger amount of intergranular P segregation than S segregation. Intergranular C segregation remained small in all the as-irradiated alloys. A PIA study has shown that the P segregation in P-doped alloys subjected to lower temperature PIA proceeds via mobile P-interstitial complexes while the S segregation is controlled by vacancy-enhanced diffusion. The mechanisms of non-equilibrium intergranular segregation induced by neutron irradiation are discussed in light of coupled fluxes of point defects and impurities, and changes in the segregation capacity of grain boundaries. Small punch tests demonstrated how the impurity segregation or desegregation and hardening or softening induced by the irradiation, ETA and PIA influence intergranular embrittlement in the various ferritic alloys.
/Si InterfacesOshima, Masaharu*; *; Ono, Kanta*; Fujioka, Hiroshi*; *; Baba, Yuji; Yoshii, Kenji; Sasaki, Teikichi
Journal of Electron Spectroscopy and Related Phenomena, 88-91, p.603 - 607, 1998/00
Times Cited Count：5 Percentile：25.63(Spectroscopy)no abstracts in English
L resonant Auger spectra in solid phosphorus compoundsYoshii, Kenji; Baba, Yuji; Sasaki, Teikichi
Journal of Physics; Condensed Matter, 9(13), p.2839 - 2847, 1997/00
Times Cited Count：8 Percentile：49.85(Physics, Condensed Matter)no abstracts in English
S species produced during the production of H
PO
Endo, Akira; *; ; Kajimoto, Yoichi;
Health Physics, 65(1), p.92 - 95, 1993/07
Times Cited Count：1 Percentile：25.98(Environmental Sciences)no abstracts in English
S species produced during production of HPO and effective reduction of S releaseEndo, Akira; ; ; ; Kajimoto, Yoichi; Ikezawa, Yoshio
Proc. of Asia Congress on Radiation Protection, p.730 - 733, 1993/00
no abstracts in English
Nishiyama, Yutaka; Fukaya, Kiyoshi; Suzuki, Masahide; Eto, Motokuni; *
Small Specimen Test Techniques; ASTM STP 1204, p.16 - 26, 1993/00
no abstracts in English
; ;
Trans.Iron Steel Inst.Jpn., 22, p.863 - 868, 1982/00
no abstracts in English
JAERI 1273, 60 Pages, 1981/12
no abstracts in English
Si production as a by-product of P radioisotope production processJournal of Radioanalytical Chemistry, 40(1-2), p.75 - 83, 1977/02
no abstracts in English
*; *; *
Bulletin of the Chemical Society of Japan, 36(8), p.928 - 937, 1963/00
Times Cited Count：7no abstracts in English
*
Nihon Genshiryoku Gakkai-Shi, 4(1), p.8 - 16, 1962/00
no abstracts in English
*
Nihon Genshiryoku Gakkai-Shi, 4(3), p.166 - 174, 1962/00
no abstracts in English
;
Analytica Chimica Acta, 25(3), p.212 - 218, 1961/00
Times Cited Count：41no abstracts in English
*; ; ;
JAERI 1013, 16 Pages, 1960/12
no abstracts in English
Hata, Kuniki; Nagai, Yasuyoshi*; Nishiyama, Yutaka
no journal, ,
no abstracts in English
