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中华结核和呼吸杂志 1997年第Z1期20卷 106-106页

作者： Kimura H Kang J Niijima M Edo H Sakabe H Shinozaki T Masuyama S okada o Tatsumi K Kuriyama T 费贵军(译) DepartmentofChestMedicine ChibaUniversitySchoolofMedicineChiba260Japan DepartmentofChestMedicine ChibaUniversitySchoolofMedicineChJapan

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慢性血栓栓塞性肺动脉高压病人的诊断线索和治疗途径

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中华结核和呼吸杂志 1997年第Z1期 109页

作者： okada o Tanabe N Katoh K Yasuda J Yamamoto T Hayashi A Mori N Sugimoto N Kasahara Y Kuriyama T 刘震宇(译) ChibaUniversitySchoolofMedicine Chiba Japan DepartmentofChestMedicine ChibaUniversitySchoolofMedicine Chiba Japan DepartmentofChestMedicine ChibaUniversitySchoolofMedicine Chiba DepartmentofChestMedicine Japan DepartmentofChestMedicine ChibaUniversitySchoolofMedicine Chiba Japan DepartmentofChestMedicine ChibaUniversitySchoolofMedicine Chiba Japan DepartmentofChestMedicine ChibaUniversitySchoolofMedicine ChibaUniversitySchoolofMedicine Chiba Japan DepartmentofChestMedicine ChibaUniversitySchoolofMedicine Chiba Japan DepartmentofChestMedicine ChibaUniversitySchoolofMedicine Chiba Chiba Japan Japan DepartmentofChestMedicine ChibaUniversitySchoolofMedicine Chiba Japan DepartmentofChestMedicine

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慢性血栓栓塞性肺动脉高压病人的诊断线索和治疗途径

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中华结核和呼吸杂志 1997年第ZK期20卷 109-109页

作者： okada o Tanabe N Katoh K Yasuda J Yamamoto T Hayashi A Mori N Sugimoto N Kasahara Y Kuriyama T 刘震宇(译) DepartmentofChestMedicine ChibaUniversitySchoolofMedicineChibaJapan

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Adaptive Process for SMART Community Governance under Persistent Disruptive Risks

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International Journal of Disaster Risk Science 2018年第4期9卷 454-463页

作者： Norio okada Institute of Disaster Area Revitalization Regrowth and Governance Kwansei Gakuin University

This article addresses the increasing need for participatory approaches to disaster reduction at the community level. Based on the author's 30-year engagement in the mountainous community Chizu Town, Tottori Prefecture, Japan, a unique participatory approach called ‘‘Zeroto-one Movement'' has been strategically studied. The study areas are found to have adaptively increased their coping capacity. Their unique participatory process is shown to be an adaptive process for SMART community governance under persistent disruptive risks—‘‘S'' represents small-sized and survivability-minded, ‘‘M'' modestscale and multiple-stakeholder involved, ‘‘A'' anticipatory and adaptive, ‘‘R'' risk-concerned and responsive, and ‘‘T''is transformative. Finally, the Case Station-Field Campus scheme is proposed to serve as a platform for studying the adaptive processes over a long period of time.

关键词： Case Station-Field Campus scheme Japan Persistent disruptive risks SMART governance Zero-to-one movement

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Novel synthesis of single-crystalline TbCu_(7)-type Sm-Fe powder by low-temperature reduction-diffusion process using molten salt

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Journal of Rare Earths 2022年第7期40卷 1126-1133页

作者： Shusuke okada Kenta Takagi Magnetic Powder Metallurgy Research Center National Institute of Advanced Industrial Science and Technology(AIST)2266-98 AnagahoraShimoshidami MoriyamaNagoya463-8560Japan

In this study,molten salt was used as a solvent for calcium(Ca)to let a reduction-diffusion(R-D)reaction occur below the melting point of Ca(1115 K),which is the lower limit temperature of the co nventional RD *** the R-D reaction is conducted below 923 K with LiCl molten salt,submicron-sized TbCu_(7)-type Sm-Fe powder is *** c/a ratio of the powder estimated by a synchrotron X-ray diffraction pattern is 0.8456,which is consistent with the Sm_(0.67)Fe_(5.667)(SmFe_(8.5))*** electron backscatter diffraction analysis reveals that single-crystalline TbCu_(7)-type SmFe_(8.5) powder was synthesized for the first time.

关键词： Reduction-diffusion TbCu_(7) Molten salt Permanent magnet Rare earths

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Lepton mass matrix from double covering of A_(4) modular flavor symmetry

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Chinese Physics C 2022年第12期46卷 162-171页

作者： Hiroshi okada Yuta orikasa Asia Pacific Center for Theoretical Physics(APCTP)-Headquarters San 31 Hyoja-dongNam-guPohang 790-784Korea Department of Physics Pohang University of Science and TechnologyPohang 37673Republic of Korea Institute of Experimental and Applied Physics Czech Technical University in PragueHusova 240/511000 Prague 1Czech Republic

We study a double covering of modular A_(4)flavor *** this end,we construct lepton models for canonical and radiative seesaw *** irreducible doublet representations,heavier Majorana fermion masses are characterized by one free parameter that would differentiate from A_(4)***χsquare numerical analysis,we demonstrate that both scenarios produce some predictions in case of normal hierarchy reproducing neutrino oscillation ***,no solution satisfies the neutrino oscillation data in case of radiative seesaw of inverted hierarchy.

关键词： flavor physics neutrino and Lepton mass beyond the standard model

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Low-temperature synthesis of Sm-Fe binary compounds by reduction-diffusion process using an eutectic salt solvent

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Rare Metals 2023年第5期42卷 1724-1731页

作者： Jungryang Kim Shusuke okada Kenta Takagi Magnetic Powder Metallurgy Research Center National Institute of Advanced Industrial Science and Technology(AIST)NagoyaAichi463-8560Japan

In this study,the temperature of the low-temperature reduction-diffusion(LTRD)process was successfully decreased to below 600℃by introducing LiClKCl eutectic molten salt with a low eutectic point(352℃)as a solvent for Ca ***,the Sm-Fe binary compounds,which were synthesizable at previously-unexplored low temperatures by the LTRD process using LiCl-KCl eutectic molten salt,were investigated,including whether a new metastable or ThMn_(12)-type Sm-Fe binary phase was *** Sm-Fe phase transitions of the SmFe binary compounds at a low temperature were identified,and it was found that MgCu_(2)-type Sm-Fe,PuNi_(3)-type SmFe and TbCu_(7)-type Sm-Fe phases were synthesized and stable at 400,500 and 550℃*** no new metastable Sm-Fe and ThMn_(12)-type Sm-Fe compounds were discovered in this study,this work can demonstrate that it is possible to synthesize the Sm-Fe phase at very low temperatures by the LTRD process for the first time.

关键词： Low-temperature synthesis Reductiondiffusion process Molten salts Hard magnet Sm-Fe compounds

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Linear seesaw model with a modular S_(4)flavor symmetry

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Chinese Physics C 2022年第5期46卷 11-19页

作者： Takaaki Nomura Hiroshi okada College of Physics Sichuan UniversityChengdu 610065China Asia Pacific Center for Theoretical Physics(APCTP)-Headquarters San 31 Hyoja-dongNam-guPohang 790-784Korea Department of Physics Pohang University of Science and TechnologyPohang 37673Korea

We discuss a linear seesaw model with a field content as minimum as possible,introducing a modular S_(4)using gauged U(1)_(B−L) *** to the rank two neutrino mass matrix,we obtain a vanishing neutrino mass eigenvalue,and only the normal mass hierarchy of neutrinos is favored via the modular S_(4)*** our numericalΔχ^(2)analysis,we especially determine a relatively sharp prediction on the sum of neutrino masses to be approximately 60 meV,in addition to other predictions.

关键词： neutrino mass linear seesaw mechanism modular S_(4)flavor symmetry

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A new model for evaluating the dynamic shear strength of rocks based on laboratory test data for earthquake-resistant design

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Journal of Rock Mechanics and Geotechnical Engineering 2019年第5期11卷 979-989页

作者： Tetsuji okada Tomohiro Naya Central Research Institute of Electric Power Industry ChibaJapan Dia Consultants Co. Ltd.SaitamaJapan

The dynamic shear strength of rocks is required for the earthquake-resistant design of nuclear power plants in *** research aims to propose a mathematical model for estimating the dynamic strength and to validate the *** different types of specimens were prepared for the model validation,and the monotonic and cyclic loading tests were conducted to obtain the mathematical model ***,multistep cyclic loading tests were performed,followed by simulations using the mathematical *** test results demonstrated that the dynamic shear strength exceeded the static shear strength,which agreed with previous ***,the dynamic shear strength calculated using the mathematical model was generally consistent with that obtained from the experimental data.

关键词： Dynamic shear strength Static shear strength Cyclic loading Strain rate Fatigue Mathematical model

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Phase transition in Pd_(40)Ni_(10)Cu_(30)P_(20) bulk metallic glass under HP & HT

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Science China(Physics,Mechanics & Astronomy) 2005年第6期48卷 716-722页

作者： Utsumi Wataru okada Taku Synchrotron Radiation Research Center Japan Atomic Energy Research Institute 1-1-1 Kout Mikasuki Sayo Hyogo 679-5148 Japan

The phase transitions in Pd40Ni10Cu30P20 bulk metallic glass (BMG) have been studied under high pressure and high temperature (HP & HT) by X-ray diffraction measurements with synchrotron radiation source. We found that the BMG underwent a phase transitions of amorphous-crystalline-amorphous at 10 GPa upon heating. The parallel experiments were carried out at 7 GPa, while we did not observe the amorphous-crystalline-amorphous transitions by increasing temperature. Quenching the melted BMG at 7 GPa, it was found that the phase crystallized from the melt differed from the primary phase crystallized from the starting amorphous solid upon heating, suggesting there existed a distinct mechanism in two cases.

关键词： phase transition, Pd40Ni10Cu30P20, high pressure and high temperature.

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