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Electronic structure and exotic exchange splitting in spin-density-wave states of BaFe2As2

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Electronic structure and exotic exchange splitting in spin-d...

Competition between axial anomaly and ferromagnetic ordering in Bi_(2-x)Fe_(x)Se_(3-x)S_(x) topological insulator:A study of magnetic and magnetotransport properties

中国真空学会2008年学术年会

作者： M.Arita k.shimada M.Taniguchi

The magnetic properties in the parent compounds are often intimately related to the microscopic mechanism of *** we report the first direct measurements on the electronic structure of a parent compound of the newly discovered iron-based superconductor,BaFe2As2,which provides a foundation for further *** show that the energy of the spin density wave (SDW) in BaFe2As2 is lowered through exotic exchange splitting of the band structure,rather than Fermi surface nesting of itinerant *** clearly demonstrates that a metallic SDW state could be solely induced by interactions of local magnetic moments,resembling the nature of antiferromagnetic order in cuprate parent compounds.

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Journal of Materiomics 2022年第3期8卷 669-677页

作者： Rahul Singh Shiv kumar A.Jain Mahima Singh Labanya Ghosh A.Singh Soma Banik A.Lakhani S.Patil E.F.Schwier k.shimada S.M.Yusuf Sandip Chatterjee Solid State Physics Division Bhabha Atomic Research CenterTrombayMumbai400085India Hiroshima Synchrotron Radiation Center HiroshimaJapan Homi Bhabha National Institute AnushaktinagarMumbai400094India Department of Physics Indian Institute of Technology(BHU)Varanasi221005India Synchrotrons Utilization Section Raja Ramanna Centre for Advanced TechnologyIndore452013India UGC-DAE Consortium for Scientific Research IndoreMadhya Pradesh452017India Department of CMP&MS Tata Institute of Fundamental ResearchMumbai400005India

The topological insulators Bi_(2-x)Fe_(x)Se_(3-x)S_(x) have been investigated by the dc-magnetization,magnetotransport and angle resolved photoemission spectroscopy(ARPES)*** doping of Fe and S,a negative giant magneto-resistance(MR)is observed for parallel electric and magnetic fields(H||E).The MR behavior at lower magnetic field can be explained with the semi-classical theory whereas the MR behavior at higher field has been attributed to the axial ***,the system reached to the quantum limit at low magnetic field(~4.5T).The magnetic ordering can be explained with the presence of both the RkkY(surface)and van-Vleck(bulk)*** ARPES study reveals that a surface gap is suppressed when the magnetic ordering changes from ferromagnetic to anti-ferromagnetic *** ARPES study and the appearance of quantum oscillations(SdH)in the resistivity pattern reveal that the topological surface property is preserved with the co-doping of Fe and S.

关键词： Spintronics Magnetoresistance Magnetism Topological insulators RkkY interaction ARPES study

Integrity and Life Satisfaction in Middle-Aged and Older Adults

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Integrity and Life Satisfaction in Middle-Aged and Older Adu...

The 8th Asia/Oceania Regional Congress of Gerontology and Geriatrics

作者： F.Ishihara N.Hattori k.shimada A.Nakazawa H.Osada Graduate School of International Studies J.F.Oberlin University College of Nursing in the School of Medicine Yokohama City University College of Nursing in the School of Medicine Yokohama City University kyoritsu Women’s Junior College（Nursing） Graduate School of International Studies J.EOberlin University

＜正＞Purpose:The purpose of this study is to examine factors influencing integrity and life satisfaction in middle-aged and older adults. Methods:Questionnaires were distributed to130 older adults,and 111 of them（85...

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煤在压力流化床中碳化生产煤气

煤炭转化 1985年第1期 46-52页

作者： k.shimada 师新玉

在间歇式压力流化床中研究煤的碳化,考察操作条件对焦油炭和煤气的产率及组成的影响。煤气的产率,随着碳化温度和碳化压力的提高而增加。在碳化温度为800℃、压力为10kgf/cm2（表压）时,对于流化气中含有20%的氢气和不含氢气的两种情况... 详细信息

在间歇式压力流化床中研究煤的碳化,考察操作条件对焦油炭和煤气的产率及组成的影响。煤气的产率,随着碳化温度和碳化压力的提高而增加。在碳化温度为800℃、压力为10kgf/cm2（表压）时,对于流化气中含有20%的氢气和不含氢气的两种情况,所产生的煤气的总热值分别为1.5千卡/克和1.3千卡/克。这个差值是因为炭和焦油吸附了一些氢后,气化产生的煤气组成有所改变,特别是其中CH4数量的增加及CO2,数量的减少。

关键词：煤气产率总热值可燃气体碳化压力流化气碳化温度流化床沸腾床化工机械

Development of Passive Neutron Dosimeter with Good Energy Response

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Development of Passive Neutron Dosimeter with Good Energy Re...

Mission of the National Cancer Center Hospital in Japan to promote clinical trials for precision medicine

作者： T.Iimoto k.shimada M.Hirota T.Ogawa T.Tran L.Thiem k.Yamazaki T.Takahashi Devision for Environment Health and SafetyThe University of Tokyo Graduate School of Engineering The University of Tokyo

INTRODUCTION:A passive personal neutron dosimeter consists usually a combination of CR-39 (Poly-Allyl digricol carbonate) and one millimeter thickness polyethylene sheet(PE1).It is hard to measure neutron energy using only CR-39 with *** dosimeter could not follow changes on radiation weighting factor. In order to adjust energy response for neutron,many types of radiator have been designed here and those energy responses have been checked.

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Cancer Biology & Medicine 2024年第1期21卷 1-3页

作者： kazuaki shimada kenichi Nakamura Noboru Yamamoto Department of Hepatobiliary and Pancreatic Surgery National Cancer Center HospitalTokyo 104-0045Japan Clinical Research Support Offce National Cancer Center HospitalTokyo 104-0045Japan Department of Experimental Therapeutics National Cancer Center HospitalTokyo 104-0045Japan

Precision medicine is a growing field *** its potential benefit to many patients,several major obstacles must be overcome before precision medicine can be more widely used in clinical *** main obstacles are associated... 详细信息

关键词： clinical Cancer overcome

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血管造影显示冠状动脉全闭塞病人的T1WMRI上高信号与冠状动脉闭塞持续时间的关系

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国际医学放射学杂志 2017年第6期 737-737页

作者： k.Matsumoto S.Ehara T.Hasegawa M.Sakaguchi k.shimada 张毓婧 Department of Cardiovascular Medicine Osaka City University Graduate School of Medicine

摘要目的评估血管造影显示冠状动脉全闭塞（CTO）的病人冠状动脉闭塞持续时间与1.5 T T1W MRI上高信号（HIS）的关系。方法测量冠状动脉目标区的信号强度与邻近

关键词：冠状动脉 CTO T1WMRI 血管造影慢性完全闭塞持续时间

比较Gd-EOB-DTPA增强MRI与扩散加权成像对肝内小转移灶的检出

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国际医学放射学杂志 2011年第1期34卷 93-页

作者： k.shimada H.Isoda Y.Hirokawa S.Arizono T.Shibata k.Togashi 程悦 Department of Diagnostic Imaging and Nuclear Medicine Kyoto University Graduate School of Medicine

目的比较Gd-EOB-DTPA增强MRI与扩散加权成像(DWI)检出肝内小转移灶(2cm或更小)的准确性。方法 45例病人行腹部3TMRI检查。

关键词： MR Gd-EOB-DTPA 扩散加权成像肝转移肝

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A Comparative Study of Two Tree-Based Models for Predicting Flyrock Velocity at Open Pit Bench Mining

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Open Journal of Applied Sciences 2024年第2期14卷 267-287页

作者： Ezatullah Rawnaq Bassir Esmatyar Akihiro Hamanaka Takashi Sasaoka Hideki shimada Department of Earth Resources Engineering Kyushu University Fukuoka Japan Department of Mining and Mineral Engineering Suleyman Demirel University Isparta Türkiye

Blasting is a cost-effective technique to break hard rock volumes by using explosives in the mining and civil engineering realms. Moreover, although blasting is a designed process and plays an indispensable role in these industries, it can also have multiple adverse environmental impacts. One such effect is flyrock, which poses risks to nearby machinery, and residential structures, and can even lead to injuries or fatalities. To optimize blasting efficiency as well as restrict side effects, prediction of the blast aftereffects is vital. Therefore, the present work focuses on using two machine learning methods to predict the velocity of flyrock in the open pit mine. To address this issue, a comprehensive dataset was gathered from the open pit mine. Then, Decision Tree and Random Forest algorithms were employed to predict flyrock velocity. The Random Forest model demonstrated superior performance compared to the Decision Tree model. Nonetheless, the performance of the Decision Tree model was deemed satisfactory, as evidenced by its coefficient of determination value of 0.83, mean squared error (MSE) of 4.2, and mean absolute percentage error (MAPE) of 5.6%. Considering these metrics, it is reasonable to conclude that tree-based algorithms can be effective in predicting flyrock velocity.

关键词： Flyrock Machine Learning Bench Blasting Coefficient of Determination