記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Geophysical Union  

Elastic properties of B2-Fe0.67Ni0.06Si0.27 (15 wt.% Si) alloy have been investigated by combined high-resolution inelastic x-ray scattering and powder x-ray diffraction in diamond anvil cells up to 100 GPa at room temperature. Densities (ρ), compressional (VP) and shear (VS) wave velocities were extrapolated to inner core conditions to enable comparison with the preliminary reference Earth model. The modeled aggregate compressional and shear wave velocities and densities of the two-phase mixture of B2-Fe0.67Ni0.06Si0.27 and hcp-Fe-Ni are consistent with inner core PREM values of VP, VS, and ρ based on a linear mixing model with 30(5) vol % B2-Fe0.67Ni0.06Si0.27 and 70(5) vol % hcp Fe-Ni, which corresponds to ~3-5 wt.% Si and ~5-12 wt.% Ni.

DOI： 10.1029/2021gl096405

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MDPI  

The density and sound velocity structure of the Earth's interior is modeled on seismological observations and is known as the preliminary reference Earth model (PREM). The density of the core is lower than that of pure Fe, which suggests that the Earth's core contains light elements. Carbon is one plausible light element that may exist in the core. We determined the equation of state (EOS) of Fe3C based on in situ high-pressure and high-temperature x-ray diffraction experiments using a diamond anvil cell. We obtained the P-V data of Fe3C up to 327 GPa at 300 K and 70-180 GPa up to around 2300 K. The EOS of nonmagnetic (NM) Fe3C was expressed by two models using two different pressure scales and the third-order Birch-Murnaghan EOS at 300 K with the Mie-Gruneisen-Debye EOS under high-temperature conditions. The EOS can be expressed with parameters of V0 = 148.8(±1.0) A3, K0 = 311.1(±17.1) GPa, K0' = 3.40(±0.1), γ0 = 1.06(±0.42), and q = 1.92(±1.73), with a fixed value of θ0 = 314 K using the KBr pressure scale (Model 1), and V0 = 147.3(±1.0) A3, K0 = 323.0(±16.6) GPa, K0' = 3.43(±0.09), γ0 = 1.37(±0.33), and q = 0.98(±1.01), with a fixed value of θ0 = 314 K using the MgO pressure scale (Model 2). The density of Fe3C under inner core conditions (assuming P = 329 GPa and T = 5000 K) calculated from the EOS is compatible with the PREM inner core.

DOI： 10.3390/min9120744

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

Spin crossover plays a central role in the structural instability, net magnetic moment modification, metallization, and even in superconductivity in corresponding materials. Most reports on the pressure-induced spin crossover with a large volume collapse have so far focused on compounds with a single transition metal. Here we report a comprehensive high-pressure investigation of a mixed Fe-Mn perovskite La2FeMnO6. Under pressure, the strong coupling between Fe and Mn leads to a combined valence/spin transition: Fe3+(S=5/2)→Fe2+(S=0) and Mn3+(S=2)→Mn4+(S=3/2), with an isostructural phase transition. The spin transitions of both Fe and Mn are offset by ~20 GPa of the onset pressure, and the lattice collapse occurs in between. Interestingly, Fe3+ ion shows an abnormal behavior when it reaches a lower valence state (Fe2+) accompanied by a +0.5 eV energy shift in the Fe K-absorption edge at 15 GPa. This process is associated with the charge-spin-orbital state transition from high spin Fe3+ to low spin Fe2+, caused by the significantly enhanced t2g-eg crystal field splitting in the compressed lattice under high pressure. Density functional theory calculations confirm the energy preference of the high-pressure state with charge redistribution accompanied by spin state transition of Fe ions. Moreover, La2FeMnO6 maintains semiconductor behaviors even when the pressure reached 144.5 GPa as evidenced by the electrical transport measurements, despite the huge resistivity decreasing seven orders of magnitude compared with that at ambient pressure. The investigation carried out here demonstrates high flexibility of double perovskites and their good potentials for optimizing the functionality of these materials.

DOI： 10.1103/physrevb.99.195115

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Geophysical Union  

We investigated the phase relations of the Fe-H2O system at high pressures based on in situ x-ray diffraction experiments and first-principles calculations and demonstrate that FeHx and FeO are present at pressures less than ~78 GPa. A recently reported pyrite-structured FeO2 was identified in the Fe-H2O system at pressures greater than ~78 GPa after laser heating. The phase observed in this study has a unit cell volume 8%-11% larger than that of FeO2, produced in the Fe-O binary system reported previously, suggesting that hydrogen might be retained in a FeO2Hx crystal structure. Our observations indicate that H2O is likely introduced into the deep Earth through reaction between iron and water during the accretion and separation of the metallic core. Additionally, reaction between Fe and H2O would occur at the core-mantle boundary, given water released from hydrous subducting slabs that intersect with the metallic core. Accumulation of volatile-bearing iron compounds may provide new insights into the enigmatic seismic structures observed at the base of the lower mantle.

DOI： 10.1002/2017gl075720

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Institute of Physics  

The structure of liquid aluminum is measured up to 6.9 GPa and 1773 K using a multi-angle energy-dispersive x-ray diffraction method in a Paris-Edinburgh press. The effect of pressure and temperature on the structure and density of liquid aluminum is analyzed by means of the hard sphere model. Peak positions in the structure factor of liquid aluminum show a nearly constant value with varying temperatures at ~1-2 GPa and slightly change with varying pressures up to 6.9 GPa at 1173-1773 K. In contrast, the height of the first peak in the structure factor significantly changes with varying pressures and temperatures. Hard sphere model analysis shows that the structure of liquid aluminum in the pressure-temperature range of this study is controlled mostly by the packing fraction with only a minor change in hard sphere diameters. The obtained packing fractions and hard sphere diameters are used to calculate densities of liquid aluminum at high pressure-temperature conditions.

DOI： 10.1063/1.4963278

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Taylor & Francis  

Pressure and temperature dependence of the structure of liquid Sn has been measured up to 5.3 GPa and 1373 K using multi-angle energy-dispersive x-ray diffraction in Paris-Edinburgh cell. Under nearly isobar condition at ~1 GPa, liquid Sn displays a normal behavior with gradual structural changes with temperature up to 1373 K. Under isothermal compressions at 850 and 1373 K, however, the structure factors of liquid Sn both show a turn-over at ~3 GPa in the height of the first diffraction peak. According to the hard sphere cluster model, the structure of liquid Sn may be viewed as two different types of clusters. Below ~3 GPa, it is shown that the packing fraction of the dominant cluster (occupying ~0.94 fraction) changes with compression, while above ~3 GPa, the packing fractions and the hard sphere diameters of both clusters start to influence the structure, causing significant changes with increasing pressure. Our results suggest that the compression behavior of liquid Sn changes from localized densification only in one cluster below ~3 GPa to homogeneous structural changes in both clusters above ~3 GPa.

DOI： 10.1080/08957959.2016.1185520

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：National Academy of Sciences  

Knowledge of pressure-induced structural changes in glasses is important in various scientific fields as well as in engineering and industry. However, polyamorphism in glasses under high pressure remains poorly understood because of experimental challenges. Here we report new experimental findings of ultrahigh-pressure polyamorphism in GeO2 glass, investigated using a newly developed double-stage large-volume cell. The Ge-O coordination number (CN) is found to remain constant at ~6 between 22.6 and 37.9 GPa. At higher pressures, CN begins to increase rapidly and reaches 7.4 at 91.7 GPa. This transformation begins when the oxygen-packing fraction in GeO2 glass is close to the maximal dense-packing state (the Kepler conjecture = ~0.74), which provides new insights into structural changes in network-forming glasses and liquids with CN higher than 6 at ultrahigh-pressure conditions.

DOI： 10.1073/pnas.1524304113

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担当区分：最終著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Geophysical Union  

Iron carbide Fe7C3 has recently emerged as a potential host of reduced carbon in Earth's mantle and a candidate component of the inner core, but the equation of state of Fe7C3 is still uncertain, partly because the nature of pressure-induced magnetic transitions in Fe7C3 and their elastic effects remain controversial. Here we report the compression curve of hexagonal Fe7C3 in neon medium with dense pressure sampling and in comparison with pure iron in the same loading. The results revealed elastic softening between 7 GPa and 20 GPa, which can be attributed to noncollinear alignment of spin moments in a state between the ferromagnetic and paramagnetic phases, as expected for Invar-type alloys. The volume reduction associated with the softening would enhance the stability of Fe7C3 in the deeper part of the upper mantle and transition zone. As a result of subsequent spin crossover at higher pressures, Fe7C3 at inner core conditions likely occurs as the nonmagnetic phase, which remains a candidate for the major component of the Earth's central sphere.

DOI： 10.1002/2015jb012701

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Institute of Physics  

The monochromator and focusing mirrors of the 16-BM-D beamline, which is dedicated to high-pressure research with micro-X-ray diffraction (micro-XRD) and x-ray absorption near edge structure (XANES) (6-45 keV) spectroscopy, have been recently upgraded. Monochromatic x-rays are selected by a Si (111) double-crystal monochromator operated in an artificial channel-cut mode and focused to 5 μm × 5 μm (FWHM) by table-top Kirkpatrick-Baez type mirrors located near the sample stage. The typical x-ray flux is ~5×10^8 photons/s at 30 keV. The instrumental resolution, Δq/qmax, reaches to 2×10^-3 and is tunable through adjustments of the detector distance and x-ray energy. The setup is stable and reproducible, which allows versatile application to various types of experiments including resistive heating and cryogenic cooling as well as ambient temperature compression. Transmission XANES is readily combined with micro-XRD utilizing the fixed-exit feature of the monochromator, which allows combined XRD-XANES measurements at a given sample condition.

DOI： 10.1063/1.4926893

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Chemical Society  

The high-pressure structural and vibrational properties of Bi2S3 have been probed up to 65 GPa with a combination of experimental and theoretical methods. The ambient-pressure Pnma structure is found to persist up to 50 GPa; further compression leads to structural disorder. Closer inspection of our structural and Raman spectroscopic results reveals notable compressibility changes in specific structural parameters of the Pnma phase beyond 4-6 GPa. By taking the available literature into account, we speculate that a second-order isostructural transition is realized near that pressure, originating probably from a topological modification of the Bi2S3 electronic structure near that pressure. Finally, the Bi3+ lone-electron pair (LEP) stereochemical activity decreases against pressure increase; an utter vanishing, however, is not expected until 1 Mbar. This persistence of the Bi3+ LEP activity in Bi2S3 can explain the absence of any structural transitions toward higher crystalline symmetries in the investigated pressure range.

DOI： 10.1021/jp4124666

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

We combine high-pressure x-ray diffraction, high-pressure Raman scattering, and optical microscopy to investigate a series of (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-xPT) solid solutions (x=0.2, 0.3, 0.33, 0.35, 0.37, 0.4) in diamond anvil cells up to 20 GPa at 300 K. The Raman spectra show a peak centered at 380 cm-1 starting above 6 GPa for all samples, in agreement with previous observations. X-ray diffraction measurements are consistent with this spectral change indicating a structural phase transition; we find that the triplet at the pseudocubic (220) Bragg peak merges into a doublet above 6 GPa. Our results indicate that the morphotropic phase boundary region (x=0.33-0.37) with the presence of monoclinic symmetry persists up to 7 GPa. The pressure dependence of ferroelectric domains in PMN-0.32PT single crystals was observed using a polarizing optical microscope. The domain wall density decreases with pressure and the domains disappear at a modest pressure of 3 GPa. We propose a pressure-composition phase diagram for PMN-xPT solid solutions.

DOI： 10.1103/physrevb.86.224111

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Physical Society  

Detailed knowledge of atomic-scale structural change is essential for understanding the process and mechanism of phase transitions in solids. We present the direct experimental evidence of a precursor lattice in silicon at high pressures. The precursor lattice may appear to coexist dynamically with the host lattice over a large pressure range through rapid lattice fluctuations. The first-principles calculations are used to elucidate a dynamic lattice-fluctuation mechanism that accounts for the experimental observations. This precursor lattice-fluctuation mechanism for the phase transition goes beyond previously considered reconstructive or displacive processes and provides a novel picture of the underlying dynamics.

DOI： 10.1103/physrevlett.109.205503

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer  

The crystal structure of chromite FeCr2O4 was investigated to 13.7 GPa and ambient temperature with single-crystal x-ray diffraction techniques. The unit-cell parameter decreases continuously from 8.3832(5) to 8.2398(11) A up to 11.8 GPa. A fit to the Birch-Murnaghan equation of state (EoS) based on the P-V data gives: K0 = 209(13) GPa, K' = 4.0 (fixed), and V0 = 588(1) A3. The FeO4 tetrahedra and CrO6 octahedra are compressed isotropically with pressure with their Fe-O and Cr-O bond distances decreasing from 1.996(6) to 1.949(7) A and from 1.997(3) to 1.969(7) A, respectively. The tetrahedral site occupied by the Fe2+ cation is more compressible than the octahedral site occupied by the Cr3+ cation. The resulting EoS parameters for the tetrahedral and the octahedral sites are K0 = 147(9) GPa, K' = 4.0 (fixed), V0 = 4.07(1) A3 and K0 = 275(24) GPa, K' = 4.0 (fixed), V0 = 10.42(2) A3, respectively. A discontinuous volume change is observed between 11.8 and 12.6 GPa. This change indicates a phase transition from a cubic (space group Fd-3m) to a tetragonal structure (space group I41/amd). At the phase transition boundary, the two Cr-O bonds parallel to the c-axis shorten from 1.969(7) to 1.922(17) A and the other four Cr-O bonds parallel to the ab plane elongate from 1.969(7) to 1.987(9) A. This anisotropic deformation of the octahedra leads to tetragonal compression of the unit cell along the c-axis. The angular distortion in the octahedron decreases continuously up to 13.7 GPa, whereas the distortion in the tetrahedron rises dramatically after the phase transition. At the pressure of the phase transition, the tetrahedral bond angles along the c-axis direction of the unit cell begin decreasing from 109.5° to 106.6 (7)°, which generates a "stretched" tetrahedral geometry. It is proposed that the Jahn-Teller effect at the tetrahedrally coordinated Fe2+ cation becomes active with compression and gives rise to the tetrahedral angular distortion, which in turn induces the cubic-to-tetragonal transition. A qualitative molecular orbital model is proposed to explain the origin and nature of the Jahn-Teller effect observed in this structure and its role in the pressure-induced phase transition.

DOI： 10.1007/s00269-011-0468-6

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：Institute of Electrical and Electronics Engineers  

We combine high-pressure x-ray diffraction, high-pressure Raman scattering, and optical microscopic methods to investigate a series of PMN-xPT solid solutions (x=0.2, 0.3, 0.33, 0.35, 0.37, 0.4) in diamond anvil cells up to 20 GPa at 300 K. The Raman spectra show a new peak centered at 380 cm-1 above 6 GPa for all samples, consistent with previous observations. X-ray diffraction measurements are consistent with this spectral change indicating a structural phase transition. For example, we find that the triplet at the pseudocubic [220] Bragg peak merges into a doublet above 6 GPa. The analyzed results indicate that the morphotropic phase boundary (x=0.33 to 0.37) with monoclinic symmetry persists up to 7 GPa. The pressure dependence of ferroelectric domains in PMN-0.32PT single crystals was observed with a polarizing optical microscope. The domain wall density decreases with pressure and the domains disappears at modest pressure of 3 GPa. This indicates that the high pressure phase of PMN-PT is not a macroscopic polar state. We suggest a phase diagram for the PMN-xPT solid solutions.

DOI： 10.1109/isaf.2011.6014105

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記述言語：英語   掲載種別：論文集(書籍)内論文   出版者・発行元：Elsevier  

In the Plesovice peridotite, several lines of evidence suggesting an ultradeep condition are found. All of these facts suggest that the Plesovice peridotite once resided in the diamond-stability field, which could not be identified by the previous geothermobarometric studies. This suggests that diamond was stable in the rock before Stage I (high-temperature spinel6garnet peridotite stage), which is the oldest generation of mineral assemblage previously recognized in the Plesovice peridotite. Furthermore, the presence of pyroxene exsolution lamellae in the earlier generation of spinel (Stage I) implies the preexisting high-pressure stage before Stage I. If graphite in MS inclusions were originally crystallized as diamond, parental fluids responsible for MS inclusion was most likely entrapped in the host mineral before Stage I, and they should have crystallized daughter minerals during the cooling/exhumation trajectory from the diamond-stability field, through Stage I, to the chlorite peridotite stage. For MS inclusions within Spinel-I, there is a good possibility original fluid/melt was entrapped in the diamond-stability field, if host Spinel-I was originally its high-pressure polymorph, Ca-ferrite, or Ca-titanite. On the other hand, one could not find the typical pyroxene exsolution texture in garnet. This probably suggests that most garnet was secondary formed at the expense of Spinel-I at relatively low-pressure condition. Therefore, if graphite in garnet was originally diamond, it is most likely that the diamond was graphitized before the entrapment within garnet crystal.

DOI： 10.1016/b978-0-12-385144-4.00002-3

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Mineralogical Society of America  

A new superstructure was found in mordenite (Na5.59Ca1.80Al9.19Si38.81O96・nH2O) from Challis Valley, Idaho-a zeolite widely used in previous studies. The occurrence of the superstructure reflections were observed in 12 specimens from two rock samples, at the midpoint of layers in the oscillation photographs around the a* and b* axes, but not around the c* axis. The apparent 2a, 2b, and c axes are orthogonal. In spite of yielding an apparent orthorhombic cell, careful observation of the intensities revealed that the superstructure is monoclinic with twice the volume of the orthorhombic cell: a' = 27.356(9), b' = 27.356(9), c' = 7.517(2) A, γ' = 97.14(4)°, and V' = 5582(4) A3. The presence of the superstructure was examined for specimens from ten other localities and a synthetic sample but there was no evidence for extra spots of the superstructure, indicating that the occurrence is not common. The large displacement factors of O8 oxygen, and its associated 180° T-O-T angle that is energetically unfavorable, are basic to the mordenite structure. In the monoclinic superstructure the O8 oxygen is decomposed into several asymmetric O atoms by the symmetry reduction. The large displacement smearing of O8 oxygen perpendicular to the straight T-O-T, are explained by the superposition of decomposed O atoms. The extra spots are predominantly observed in the reciprocal planes with l = odd in the same way as diffuse streaks. The observation of extra spots and diffuse streaks suggests that there are three kinds of domains in the mordenite, one in the ordered form and two others in the random form of c/2 linear displacements. The domain in the ordered form represents the superstructure. Thus, we propose a model for the superstructure in which the c/2 displacement occurs alternatively in the two basic unit cells slightly modified in the superstructure, yielding the periodic arrangements.

DOI： 10.2138/am.2007.2345

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Mineralogical Society of America  

To ensure the presence of coesite and its transformed polymorph, quartz, in ultrahigh-pressure (UHP) rocks and to examine the relic of the phase transformation, crystal structures were analyzed by single-crystal x-ray diffraction (XRD) directly using the rock thin section mounted on a slide glass. The rock sample used is a coesite-bearing eclogite from the Sulu UHP terrain, eastern China. The crystal structures were determined successfully by this new method and the presence of coesite and quartz in UHP rocks was identified for the first time by XRD. The R-factor [R(F)] converged to 0.046 for coesite and 0.087 for quartz. The displacement ellipsoids for coesite and quartz are larger than those previously reported for these two phases, which is consistent with expected effects of trapped strain due to the phase transformation from coesite to quartz during exhumation from the Earth's mantle. This paper is the first report of single-crystal XRD of a rock thin section on a glass slide and establishes the technique, and provides proof-of-concept of the method. Although the mineral species included in a thin section can often be identified by other methods, such as Raman spectroscopy, an advantage of the reported method is that it can be applied to any mineral in a thin section, and not just to the UHP minerals. Moreover, it is applicable to an unknown or new mineral in a thin section, discarding the spots of known minerals and constructing a lattice from the residual spots to find the structure of the unknown phase.

DOI： 10.2138/am.2007.2228

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開催年月日： 2022年12月13日 - 2022年12月15日

記述言語：日本語   会議種別：ポスター発表  

開催地：Ibaraki, Osaka  

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開催年月日： 2022年9月17日 - 2022年9月19日

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：Niigata  

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開催年月日： 2022年5月22日 - 2022年6月3日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Chiba  

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開催年月日： 2022年5月22日 - 2022年6月3日

記述言語：英語   会議種別：ポスター発表  

開催地：Chiba  

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開催年月日： 2022年5月20日 - 2022年6月3日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Chiba  

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開催年月日： 2021年10月18日 - 2021年10月20日

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：Himeji, Hyogo  

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開催年月日： 2021年10月18日 - 2021年10月20日

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：Himeji, Hyogo  

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開催年月日： 2021年10月18日 - 2021年10月20日

記述言語：日本語   会議種別：ポスター発表  

開催地：Himeji, Hyogo  

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開催年月日： 2021年9月16日 - 2021年9月18日

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：Online  

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開催年月日： 2021年5月30日 - 2021年6月6日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Online  

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開催年月日： 2021年5月30日 - 2021年6月6日

記述言語：英語   会議種別：ポスター発表  

開催地：Online  

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開催年月日： 2021年3月1日 - 2021年3月3日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（公募）  

開催地：Online  

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開催年月日： 2020年7月12日 - 2020年7月16日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Online  

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開催年月日： 2020年7月12日 - 2020年7月16日

記述言語：英語   会議種別：ポスター発表  

開催地：Online  

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開催年月日： 2020年5月3日 - 2020年5月8日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Online  

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開催年月日： 2019年12月9日 - 2019年12月13日

記述言語：英語   会議種別：ポスター発表  

開催地：San Francisco  

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開催年月日： 2019年10月23日 - 2019年10月25日

記述言語：日本語   会議種別：ポスター発表  

開催地：Sapporo, Hokkaido  

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開催年月日： 2019年9月20日

記述言語：日本語   会議種別：ポスター発表  

開催地：Fukuoka  

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開催年月日： 2019年6月23日 - 2019年6月28日

記述言語：英語   会議種別：口頭発表（招待・特別）  

開催地：Stony Brook  

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開催年月日： 2019年5月26日 - 2019年5月30日

記述言語：英語   会議種別：ポスター発表  

開催地：Chiba  

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開催年月日： 2019年5月26日 - 2019年5月30日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Chiba  

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開催年月日： 2019年5月26日 - 2019年5月30日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Chiba  

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開催年月日： 2019年5月26日 - 2019年5月30日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Chiba  

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開催年月日： 2019年4月7日 - 2019年4月12日

記述言語：英語   会議種別：ポスター発表  

開催地：Vienna  

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開催年月日： 2018年12月10日 - 2018年12月14日

記述言語：英語   会議種別：ポスター発表  

開催地：Washington, D.C.  

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開催年月日： 2018年11月26日 - 2018年11月28日

記述言語：日本語   会議種別：ポスター発表  

開催地：Okayama  

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開催年月日： 2018年9月19日 - 2018年9月21日

記述言語：日本語   会議種別：ポスター発表  

開催地：Yamagata  

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開催年月日： 2018年5月20日 - 2018年5月24日

記述言語：英語   会議種別：ポスター発表  

開催地：Chiba  

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開催年月日： 2017年11月8日 - 2017年11月10日

記述言語：日本語   会議種別：ポスター発表  

開催地：Nagoya, Aichi  

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開催年月日： 2017年9月24日 - 2017年9月28日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Saint Malo  

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開催年月日： 2017年9月24日 - 2017年9月28日

記述言語：英語   会議種別：ポスター発表  

開催地：Saint Malo  

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開催年月日： 2017年9月12日 - 2017年9月14日

記述言語：日本語   会議種別：口頭発表（一般）  

開催地：Matsuyama, Ehime  

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開催年月日： 2017年9月12日 - 2017年9月14日

記述言語：日本語   会議種別：ポスター発表  

開催地：Matsuyama, Ehime  

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開催年月日： 2017年5月20日 - 2017年5月28日

記述言語：英語   会議種別：ポスター発表  

開催地：Chiba  

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開催年月日： 2015年12月14日 - 2015年12月18日

記述言語：英語   会議種別：ポスター発表  

開催地：San Francisco  

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開催年月日： 2015年12月14日 - 2015年12月18日

記述言語：英語   会議種別：ポスター発表  

開催地：San Francisco  

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開催年月日： 2014年12月15日 - 2014年12月19日

記述言語：英語   会議種別：ポスター発表  

開催地：San Francisco  

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開催年月日： 2014年9月25日 - 2014年9月27日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（指名）  

開催地：Argonne  

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開催年月日： 2014年9月25日 - 2014年9月27日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（指名）  

開催地：Argonne  

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開催年月日： 2012年10月10日 - 2012年10月12日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（指名）  

開催地：Argonne  

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開催年月日： 2012年10月10日 - 2012年10月12日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（指名）  

開催地：Argonne  

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開催年月日： 2012年10月10日 - 2012年10月12日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（公募）  

開催地：Argonne  

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開催年月日： 2012年10月10日 - 2012年10月12日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（指名）  

開催地：Argonne  

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開催年月日： 2012年10月10日 - 2012年10月12日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（指名）  

開催地：Argonne  

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開催年月日： 2012年10月10日 - 2012年10月12日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（公募）  

開催地：Argonne  

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開催年月日： 2012年10月10日 - 2012年10月12日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（公募）  

開催地：Argonne  

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開催年月日： 2012年10月10日 - 2012年10月12日

記述言語：英語   会議種別：シンポジウム・ワークショップ パネル（公募）  

開催地：Argonne  

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開催年月日： 2012年9月23日 - 2012年9月27日

記述言語：英語   会議種別：ポスター発表  

開催地：Mito, Ibaraki  

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開催年月日： 2012年2月27日 - 2012年3月2日

記述言語：英語   会議種別：口頭発表（一般）  

開催地：Boston  

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開催年月日： 2011年8月20日 - 2011年8月30日

記述言語：英語   会議種別：ポスター発表  

開催地：Madrid  

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開催年月日： 2010年12月13日 - 2010年12月17日

記述言語：英語   会議種別：口頭発表（招待・特別）  

開催地：San Francisco  

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開催年月日： 2006年9月16日 - 2006年9月18日

記述言語：日本語   会議種別：ポスター発表  

開催地：Kochi  

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開催年月日： 2006年7月23日 - 2006年7月28日

記述言語：英語   会議種別：ポスター発表  

開催地：Kobe, Hyogo  

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開催年月日： 2006年7月23日 - 2006年7月28日

記述言語：英語   会議種別：ポスター発表  

開催地：Kobe, Hyogo  

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