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作者： t.saito N.Fujii Research Reactor Institute Kyoto University

IINtRODUCtION:Some bacteria show considerably high resistance to ionizing radiation.A common feature of these bacteria is that these bacteria contain red carotenoid *** mutants of these radioresistant bacteria are more sensitive than wild types to ***,these red carotenoid pigments are thought to contribute to defense mechanisms of these radioresistant bacteria against ionizing radiation. It is well known that biological effects induced by

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Characterization of Clustered DNA Damage Induced by Ionizing Radiation Specifically

Characterization of Clustered DNA Damage Induced by Ionizing...

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作者： H.terato t.saito Analytical Research Center for Experimental Sciences Saga University

INtRODUCtION:Ionizing radiations wreak critical consequences on all of living organisms,such as individual killing,carcinogenesis,and/or genital disorders. the action mechanism might be based on the DNA damage leading to genetic ***,the detailed character of radiation DNA damage,especially the difference between radiation damage and other damage,has been *** the present study,we suppose that clustered DNA damage is a unique radiation damage,and estimate quantity and quality of clustered DNA damage

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Conformational Change of tryptophanase on the Basis of Comparison withγ-tryptophanase

Conformational Change of Tryptophanase on the Basis of Compa...

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作者： A.Shimada N.Fujii t.saito Sustainable Environmental Studies Graduate School of Life and Environment SciencesUniversity of Tsukuba

INtRODUCtION:Enzyme stereospecificity on optical isomers is generally considered absolute,which is the basic principle for birth of *** is also known as one of the enzymes with extremely rigid stereospecificity, cleaving L-tryptophan into indole,pyruvate and ammonium by catalyzing hydrolyticβ-elimination,or synthesizing L-tryptophan from indole and L-serine byβ-*** completely has no activity on either D-tryptophan or D-serine in ordinary reaction ***,when tryptophanase is in am-

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Numerical investigations of volcanic eruption and prodution of hazard maps

Numerical investigations of volcanic eruption and prodution ...

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the 24th International Symposium on Shock Waves

作者： H.Yamashita t.saito K.takayama Shock Wave Reserch Center Institute of Fluid ScienceTohoku UniversitySendai980-8577 Japan

A series of three-dimensional numerical simulations of imaginary volcanic eruptions was carried out. the numerical simulations take detailed terrain of the interested area into account. Based upon the database for the correlation of the blast wave strength and the degree of hazardous damage, hazard maps of the volcanic eruption were produced. two different eruption models were tried to investigate the effect of the way how the energy is released on the degree of the damages. the usefulness of the current numerical simulation to establish the safety measures against eruptions of any particular volcanoes.

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Radiation-Induced Luminescence for Applying to Retrospective Dosimetry

Radiation-Induced Luminescence for Applying to Retrospective...

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作者： H.Fujita Y.Nakano t.saito Nuclear Fuel Cycle Engineering Laboratories JAEA

INtRODUCtION:It is well known that natural quartz exposed to prior ionizing radiation emits luminescence by subsequent exposure to heat or light,i.e.,thermoluminescence (tL) or optically stimulated luminescence (OSL),respectively(e.g.).these luminescence signals have been widely applied to dating and retrospective *** characteristics of natural quartz are dependent on their origins, thermal histories,impurity contents,***, emission mechanism of luminescence from Japanese quartz has not been explained,so far.

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Activation Analysis of Metals in Hair from Animals Dosed Natural Medicines and Health Foods

Activation Analysis of Metals in Hair from Animals Dosed Nat...

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作者： M.Kawase S.Morimoto t.saito Faculty of Bioscience Nagahama Institute of Bio-science and Technology Department of Pharmacy Osaka Ohtani University Radioisotope Research Center Osaka University

INtRODUCtION:the plant is one of important raw material of the herbal ***,the effect of the herbal medicine is largely affected by the home and the quality of a used *** trace elements are considered to be related with the quality of herbal medicine, but the study about the trace elements in plant is not done ***,the role of trace elements in herbal medicine is little clarified. We confirmed that the polyphenol promotes the exhaust

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Large Scale Preparation of Bio-Macromolecules with a Jar-Fermentor System to Deuterium treatments

Large Scale Preparation of Bio-Macromolecules with a Jar-Fer...

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作者： t.Chatake t.saito N.Fujii Y.Morimoto Research Reactor Institute Kyoto University

INtRODUCtION:It is very important to treat biological materials into a deuterium condition to decrease incoherent scattering of the hydrogen including an intact living cell under the neutron scattering ***, a large-scale culture of bacterium is an essential technique for X-ray and neutron diffraction *** these experiments,large amounts of purified proteins are necessary. the most popular method for obtaining these proteins is overexpression of proteins in bacteria,yeast or insect *** the present study,we accomplished overexpessions of 20S proteasome from a yeast and mito-

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ICRF Experiments and Potential Formation on the GAMMA 10 tandem Mirror

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Plasma Science and technology 2006年第1期8卷 87-90页

作者： M.ICHIMURA t.CHO H.HIGAKI M.HIRAtA H.HOJO t.IMAI K.ISHII M.K.ISLAM A.ItAKURA I.KAtANUMA J.KOHAGURA Y.NAKASHIMA t.NUMAKURA t.saito Y.tAtEMAtSU M.WAtANABE M.YOSHIKAWA Plasma Research Center University of TsukubaTsukubaIbaraki 305-8577Japan

target plasmas, on which the formation of the electrostatic potentials and the improvement of the confinement are studied, are produced with ICRF in the GAMMA 10 tandem mirror. the ion temperature of more than 10 keV has been achieved in relatively low density plasmas. When the strong ICRF heating is applied, it is observed that the high frequency and the low frequency fluctuations are excited and suppress the increase of the plasma parameters. Recently, a new high power gyrotron system has been constructed and the ECRH power in plug extends up to 370 kW. the improvement of the confinement due to the formation of the potential in the axial direction and the strong radial electric field shear has been observed.

关键词： tandem mirror ICRF plasma production fluctuations potential formation

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RCNP Cyclotron techniques for Producing Ultra-Precise Beams

RCNP Cyclotron Techniques for Producing Ultra-Precise Beams

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the Second Asian Particle Accelerator Conference

作者： S.Ninomiya t.saito H.tamura K.Sato Research Center for Nuclear Physics（RCNP） Osaka Univ.Japan Research Center for Nuclear Physics（RCNP） Osaka Univ.Japan Research Center for Nuclear Physics（RCNP） Osaka Univ.Japan Research Center for Nuclear Physics（RCNP） Osaka Univ.Japan

＜正＞ the Research Center for Nuclear Physics（RCNP）in Osaka University has a *** main accelerator and the injector of the complex are a large-sized ringcyclotron and an AVF cyclotron,*** RCNP cyclotron complex has suppliedbeams mainly for nuclear physics and high-quality beams in momentum spread have beenstrongly ***,we have succeeded in producing"ULtRA-PRECISE BEAMS

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Magnetic Anisotropy in Sm_2Fe_(17-x)M_x(M=Al, Ga) and (Sm_(1-x)tm_x)_2Fe_(14)Al_3

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Journal of Materials Science & technology 2000年第2期16卷 113-117页

作者： t. tsushima (the Society of Non-traditional technology, 1-2-8, toranomon, Minato-Ku, tokyo, 105-0001 Japan) t. Urakabe, t.saito and K.Shinagawa (Dept. of Physics, Faculty of Science, toho University, 2-2-1, Miyama, Funabashi City, Chiba, 274-8510 Japan) Society of Non-traditional technology 1-2-8 Toranomon Minato-Ku Tokyo 105-0001 Japan Dept. of Physics Faculty of Science Toho University 2-2-1 Miyama Funabashi City Chiba 274-8510 Japan

In Sm_2Fe_17-_***(M=Al, Ga), there was observed a kind of spin-reorientation with temperature. and in (Sm1_-xtm_x)_2Fe_14Al_3, the anisotropy field HA increases as high as 20% from 5.4 up to 6.5 kOe with t_m.

关键词： M M=Al and x)M_x x)tm_x Magnetic Anisotropy in Sm2Fe Sm Ga tm

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