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Fujiwara, Hidenori*; Nakatani, Yasuhiro*; Aratani, Hidekazu*; Kanai, Yuina*; Yamagami, Kohei*; Hamamoto, Satoru*; Kiss, Takayuki*; Yamasaki, Atsushi*; Higashiya, Atsushi*; Imada, Shin*; et al.
Physical Review B, 108(16), p.165121_1 - 165121_10, 2023/10
Aratani, Hidekazu*; Nakatani, Yasuhiro*; Fujiwara, Hidenori*; Kawada, Moeki*; Kanai, Yuina*; Yamagami, Kohei*; Fujioka, Shuhei*; Hamamoto, Satoru*; Kuga, Kentaro*; Kiss, Takayuki*; et al.
Physical Review B, 98(12), p.121113_1 - 121113_6, 2018/09
Times Cited Count:4 Percentile:26.15(Materials Science, Multidisciplinary)Mori, Takeo*; Kitayama, Satoshi*; Kanai, Yuina*; Naimen, Sho*; Fujiwara, Hidenori*; Higashiya, Atsushi*; Tamasaku, Kenji*; Tanaka, Arata*; Terashima, Kensei*; Imada, Shin*; et al.
Journal of the Physical Society of Japan, 83(12), p.123702_1 - 123702_5, 2014/12
Times Cited Count:15 Percentile:68.66(Physics, Multidisciplinary)We show that the strongly correlated 4-orbital symmetry of the ground state is revealed by linear dichroism in core-level photoemission spectra, as we have discovered for YbRhSi and YbCuSi. Theoretical analysis shows us that the linear dichroism reflects the anisotropic charge distributions resulting from a crystalline electric field. We have successfully determined the ground-state 4 symmetry for both compounds from the polarization-dependent angle resolved core-level spectra at a temperature well below the first excitation energy. The excited-state symmetry is also probed by temperature dependence of the linear dichroism where the high measurement temperatures are on the order of the crystal-field-splitting energies.
Kimura, Takafumi*; Takanami, Takako*; Sakashita, Tetsuya; Wada, Seiichi*; Kobayashi, Yasuhiko; Higashitani, Atsushi*
Radiation Research, 178(4), p.313 - 320, 2012/10
Times Cited Count:8 Percentile:42.05(Biology)Here, we found that exposure to ionizing radiation (IR) induce certain innate immune response gene of in the intestine. Pre-treatment with IR before seeding on lawn plate, significantly increased survival rate in the nematode. IR induction of gene was highly dependent on the ELT-2 transcription factor and p38 MAPK. Moreover, the insulin/IGF-1 signal pathway works as an enhancer of induction of this gene. Silencing of the gene led to growth retardation after IR irradiation. Finally, we describe the cross-tolerance between the responses to radiation exposure and innate immune system.
Sato, Takahiro*; Iwasaki, Atsushi*; Ishibashi, Kazuki*; Okino, Tomoya*; Yamanouchi, Kaoru*; Adachi, Junichi*; Yagishita, Akira*; Yazawa, Hiroki*; Kannari, Fumihiko*; Aoyama, Makoto; et al.
Europhysics News, 42(5), P. 10, 2011/09
The resonant and non-resonant two-photon single ionization processes of He were investigated using intense free electron laser light in the extreme ultraviolet (XUV) region (53.4-61.4 nm) covering the 1s-2p and 1s-3p resonant transitions of He. On the basis of the dependences of the yield of He on the XUV light-field intensity at 53.4, 58.4, 56.0 and 61.4 nm, the absolute values of the two-photon ionization cross sections of He at the four different wavelengths and their dependence on the light-field intensity were determined for the first time.
Sato, Takahiro*; Iwasaki, Atsushi*; Ishibashi, Kazuki*; Okino, Tomoya*; Yamanouchi, Kaoru*; Adachi, Junichi*; Yagishita, Akira*; Yazawa, Hiroki*; Kannari, Fumihiko*; Aoyama, Makoto; et al.
Journal of Physics B; Atomic, Molecular and Optical Physics, 44(16), p.161001_1 - 161001_5, 2011/08
Times Cited Count:35 Percentile:82.86(Optics)The resonant and non-resonant two-photon single ionization processes of He were investigated using intense free electron laser light in the extreme ultraviolet (XUV) region (53.4-61.4 nm) covering the 1s-2p and 1s-3p resonant transitions of He. On the basis of the dependences of the yield of He on the XUV light-field intensity at 53.4, 58.4, 56.0 and 61.4 nm, the absolute values of the two-photon ionization cross sections of He at the four different wavelengths and their dependence on the light-field intensity were determined for the first time.
Sakashita, Tetsuya; Takanami, Takako*; Yanase, Sumino*; Hamada, Nobuyuki*; Suzuki, Michiyo; Kimura, Takafumi*; Kobayashi, Yasuhiko; Ishii, Naoaki*; Higashitani, Atsushi*
Journal of Radiation Research, 51(2), p.107 - 121, 2010/03
Times Cited Count:33 Percentile:63.1(Biology)The study of radiation effect in have been carried out over three decades and now allow for understanding at the molecular, cellular and individual levels. This review describes the current knowledge of the biological effects of ionizing irradiation with a scope of the germ line, aging and behavior. may be a good model system in the field of radiation biology.
Suzuki, Michiyo; Sakashita, Tetsuya; Yanase, Sumino*; Kikuchi, Masahiro; Oba, Hirofumi; Higashitani, Atsushi*; Hamada, Nobuyuki*; Funayama, Tomoo; Fukamoto, Kana; Tsuji, Toshio*; et al.
Journal of Radiation Research, 50(2), p.119 - 125, 2009/04
Times Cited Count:8 Percentile:29.65(Biology)Higashitani, Atsushi*; Mori, Chihiro*; Kimura, Takafumi*; Ikenaga, Takahiko*; Takanami, Takako*; Sakashita, Tetsuya; Wada, Seiichi*; Hamada, Nobuyuki*; Kobayashi, Yasuhiko
JAEA-Review 2007-060, JAEA Takasaki Annual Report 2006, P. 112, 2008/03
We investigated the gene expression of following carbon and irradiation using DNA microarray analysis. We observed the 187 and 297 upregulated genes after and carbon irradiation with 100 Gy, respectively, in which 51 genes were upregulated following both irradiations. On the other hand, the 358 and 388 genes were downregulated after and carbon irradiation, respectively.
Higashitani, Atsushi*; Sugimoto, Tomoko*; Mori, Chihiro*; Suzuki, Yoko*; Saito, Rumiko*; Ichishi, Eiichiro*; Sakashita, Tetsuya; Hamada, Nobuyuki*; Wada, Seiichi*; Kakizaki, Takehiko; et al.
JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 113, 2007/02
no abstracts in English
Irizawa, Akinori*; Higashiya, Atsushi*; Kasai, Shuichi*; Sasabayashi, Takehisa*; Shigemoto, Akihiko*; Sekiyama, Akira*; Imada, Shin*; Suga, Shigemasa*; Sakai, Hironori; Ono, Hiroyuki*; et al.
Journal of the Physical Society of Japan, 75(9), p.094701_1 - 094701_5, 2006/09
Times Cited Count:6 Percentile:41.88(Physics, Multidisciplinary)Photoemission spectroscopy (PES) and O X-ray absorption spectroscopy (XAS) measurements have been performed for Cd Re O single crystals. Temperature variations of their spectra reveal that the phase transition at 120 K directly changes the band structure near the Fermi level compared with another transition near 200 K. The roles of the transitions are discussed in terms of the changes in the Re-O orbital hybridization.
Sugimoto, Tomoko*; Dazai, Kumiko*; Sakashita, Tetsuya; Funayama, Tomoo; Wada, Seiichi; Hamada, Nobuyuki*; Kakizaki, Takehiko; Kobayashi, Yasuhiko; Higashitani, Atsushi*
International Journal of Radiation Biology, 82(1), p.31 - 38, 2006/01
Times Cited Count:41 Percentile:93.16(Biology)no abstracts in English
Maehira, Takahiro; Higashitani, Atsushi*; Higuchi, Masahiko*; Yasuhara, Hiroshi*; Hasegawa, Akira*
Physica B; Condensed Matter, 312-313(1-4), p.103 - 105, 2002/03
Times Cited Count:12 Percentile:53.25(Physics, Condensed Matter)UBe is a typical heavy-fermion superconductor compound. The lowtemperature electronic specific heat coefficient has the anomalous large value, =1.1J/Kmol, which is the largest among the heavy fermion uranium compounds. It also becomes the superconductor below T=0.85K. Therefore, UBe is an important material as a strongly correlated electron system, and it is necessary to study from both sides of the theory and the experiment. The measurement suggests that the Fermi surface of UBe may consist of small sheets. The energy band structure and the Fermi surface for UBe are calculated by the relativistic linear APW method.
Higashitani, Atsushi*; Sugimoto, Tomoko*; Dazai, Kumiko*; Mori, Chihiro*; Sakashita, Tetsuya; Funayama, Tomoo; Kakizaki, Takehiko; Hamada, Nobuyuki*; Wada, Seiichi*; Kobayashi, Yasuhiko
no journal, ,
no abstracts in English
Mori, Chihiro*; Sugimoto, Tomoko*; Dazai, Kumiko*; Sakashita, Tetsuya; Funayama, Tomoo; Kakizaki, Takehiko; Hamada, Nobuyuki*; Wada, Seiichi*; Kobayashi, Yasuhiko; Ichishi, Eiichiro*; et al.
no journal, ,
no abstracts in English
Higashitani, Atsushi*; Mori, Chihiro*; Sugimoto, Tomoko*; Dazai, Kumiko*; Sakashita, Tetsuya; Funayama, Tomoo; Kakizaki, Takehiko; Hamada, Nobuyuki*; Wada, Seiichi*; Kobayashi, Yasuhiko
no journal, ,
no abstracts in English
Sakashita, Tetsuya; Suzuki, Michiyo; Hamada, Nobuyuki*; Ikeda, Daisuke*; Fukamoto, Kana; Yokota, Yuichiro; Funayama, Tomoo; Yanase, Sumino*; Higashitani, Atsushi*; Ishii, Naoaki*; et al.
no journal, ,
Using as a model multicellular organism, we push forward a heavy-ion microbeam irradiation individual-study. As for about 1.2 mm in a range of carbon ions in water, all cells and tissues of are microbeam irradiation objects. Sugimoto et al. showed DNA-damage-induced cell cycle arrest and apoptosis in locally irradiated areas of . We focus the nervous system of and study the effects of localized irradiation on salt chemotaxis learning behavior. However, the anesthetic method for fixation of animals is not usable because the whole body irradiation of Co rays affected only transition stage of the conditioning for salt chemotaxis learning. Thus, now we are constructing the heavy-ion microbeam irradiation system for living target .