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Electronic structure and effective mass of pristine and Cl-doped CsPbBr_(3)

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Chinese Physics B 2024年第5期33卷 167-171页

作者：魏志远魏愉昊徐申东彭舒婷 makoto hashimoto 路东辉潘旭匡泯泉肖正国何俊峰 Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics University of Science and Technology of ChinaHefei 230026China Chongqing Key Laboratory of Micro & Nano Structure Optoelectronics and School of Physical Science and TechnologySouthwest UniversityChongqing 400715China Key Laboratory of Photovoltaic and Energy Conservation Materials Institute of Applied TechnologyHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Stanford Synchrotron Radiation Lightsource and Stanford Institute for Materials and Energy Sciences SLAC National Accelerator LaboratoryMenlo ParkCalifornia 94025USA

Organic–inorganic lead halide perovskites(LHPs) have attracted great interest owing to their outstanding optoelectronic ***,the underlying electronic structure would determinate the physical properties of *** as for now,limited studies have been done to reveal the underlying electronic structure of this material system,comparing to the huge amount of investigations on the material *** effective mass of the valance band is one of the most important physical parameters which plays a dominant role in charge transport and photovoltaic *** pristine CsPbBr_(3),the Fr?hlich polarons associated with the Pb–Br stretching modes are proposed to be responsible for the effective mass *** this regard,it would be very interesting to explore the electronic structure in doped ***,we report high-resolution angle-resolved photoemission spectroscopy(ARPES) studies on both pristine and Cl-doped CsPbBr_(3).The experimental band dispersions are extracted from ARPES spectra along both ■ and ■ high symmetry *** calculations are performed and directly compared with the ARPES *** results have revealed the band structure of Cl-doped CsPbBr_(3) for the first time,which have also unveiled the effective mass renormalization in the Cl-doped CsPbBr_(3) *** dependent measurements indicate that the chlorine doping could moderately tune the renormalization *** results will help understand the physical properties of LHPs as a function of doping.

关键词： lead halide perovskites electronic structure effective mass

Itinerant to relocalized transition of felectrons in the Kondo insulator CeRu_(4)Sn_(6)

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Frontiers of physics 2023年第5期18卷 153-160页

作者： Fan-Ying Wu Qi-Yi Wu Chen Zhang Yang Luo Xiangqi Liu Yuan-Feng Xu Dong-Hui Lu makoto hashimoto Hao Liu Yin-Zou Zhao Jiao-Jiao Song Ya-Hua Yuan Hai-Yun Liu Jun He Yu-Xia Duan Yan-Feng Guo Jian-Qiao Meng School of Physics and Electronics Central South UniversityChangsha 410083China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Center for Correlated Matter and School of Physics Zhejiang UniversityHangzhou 310058China Stanford Synchrotron Radiation Lightsource SLAC National Accelerator LaboratoryMenlo ParkCA 94025USA Beijing Academy of Quantum Information Sciences Beijing 100085China ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China

The three-dimensional electronic structure and the nature of Ce 4f electrons of the Kondo insulator CeRu_(4)Sn_(6)are investigated by angle-resolved photoemission spectroscopy,utilizing tunable photon *** results reveal(i)the three-dimensional k-space nature of the Fermi surface,(ii)the localized-to-itinerant transition of f electrons occurs at a much high temperature than the hybridization gap opening temperature,and(iii)the“relocalization”of itinerant f-electrons below 25 K,which could be the precursor to the establishment of magnetic order.

关键词： Kondo insulator heavy fermion ARPES electronic structure relocalization

Regenerative medicine strategies for chronic complete spinal cord injury

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Neural Regeneration Research 2024年第4期19卷 818-824页

作者： Shogo hashimoto Narihito Nagoshi Masaya Nakamura Hideyuki Okano Department of Orthopedic Surgery Keio University School of Medicine Department of Physiology Keio University School of Medicine

Spinal cord injury is a condition in which the parenchyma of the spinal cord is damaged by trauma or various *** rapid progress has been made in regenerative medicine for spinal cord injury that was previously untreatable,most research in this field has focused on the early phase of incomplete ***,the majority of patients have chronic severe injuries;therefore,treatments for these situations are of fundamental *** reason why the treatment of complete spinal cord injury has not been studied is that,unlike in the early stage of incomplete spinal cord injury,there are various inhibitors of neural ***,we assumed that it is difficult to address all conditions with a single treatment in chronic complete spinal cord injury and that a combination of several treatments is essential to target severe ***,we established a combination therapy of cell transplantation and drug-releasing scaffolds,which contributes to functional recovery after chronic complete transection spinal cord injury,but we found that functional recovery was limited and still needs further ***,for the further development of the treatment of chronic complete spinal cord injury,we review the necessary approaches to the different pathologies based on our findings and the many studies that have been accumulated to date and discuss,with reference to the literature,which combination of treatments is most effective in achieving functional recovery.

关键词： cell transplantation chronic phase complete transection regenerative medicine spinal cord injury

Deciphering the enigmatic spikelet traits:Resolving trade-offs for enhancing rice yield

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Molecular Plant 2024年第5期17卷 694-695页

作者： Hideki Yoshida makoto Matsuoka Institute of Fermentation Sciences Fukushima UniversityFukushima 960-1248Japan

Increasing the yield is one of the most important goals of crop *** the beginning of rice cultivation thousands of years ago,many efforts have been made to increase rice *** of the successes in this history was the Green *** tremendous improvement in the 1960s was achieved by increasing rice and wheat production through the development and widespread adoption of semi-dwarf varieties with the extensive use of fertilizers(Hedden,2003).Dwarfism in crops lowers the center of gravity of the plant body,reducing the risk of lodging and enabling farmers to use more fertilizer to increase ***-dwarf mutations in both rice and wheat created during the Green Revolution are related to the plant growth hormone gibberellin(GA).Although other mechanisms cause dwarf mutants,only GA-related semi-dwarf mutants were selected during the Green Revolution(Wang et al.,2021).While GA-related abnormalities only make plants shorter,most cases caused by other mechanisms involve not only dwarfism but also other morphological abnormalities.

关键词： dwarf crops traits

Ubiquitin self-aggregation and interaction with α-synuclein

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Ubiquitin self-aggregation and interaction with α-synuclein

Improvement of the FP Gas Discharge Quantification Method Preparing for Reactor Accident

中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： makoto hashimoto Department of Chemistry and Metabolism Tokyo Metropolitan Institute for NeuroscienceTokyo 183-8526Japan

＜正＞Objective Parkinson’s disease（PD） and dementia with Lewy bodies（DLB） are characterized by the accumulation of abnormal a-synuclein and ubiquitin in protein aggregates conforming Lewy bodies and Lewy *** proteinaceous intracellular aggregates may contribute to subsequent dopaminergic neurodegeneration. The a-synuclein is a natively unfolded protein that is capable of self-aggregation to form both oligomers and fibrillar polymers with amyloid-like *** is an extremely conserved,8.5 kD,76 residue protein found in all *** has multiple functions but it is primarily involved in a pathway that regulates the bulk of intracellular protein *** demonstrates that ubiquitin plays an important role in alpha-synuclein ***,the feature and mechanism among ubiquitin and synuclein proteins in neurodegeneration are not *** present study is to investigate the characteristic of ubiquitin and interaction with *** The aggregation features and the interaction between ubiquitin and synuclein was identified by immunobloting and morphological *** （1） Ubiquitin protein is aggregated and fibrillated under certain conditions,i.e.,increasing time lag,high temperature, low pH and ferrous iron oxidation in vitro.（2）α-Synuclein WT appears bamboo-like longer fibril,while ubiquitin looks thin twisted thread,and can fuse and hybrid with a-synuclein filaments by immunoelectron microscopy assay. （3） In stable synuclein B103 neuroblastoma cells,ubiquitin colocalized with synuclein in inclusion bodies and could accumulate and ubiquitinate with synuclein in certain *** These results suggest that ubiquitin could self-aggregate and might interact with a-synuclein in neurodegeneration.

关键词： ubiquitin synuclein aggregation neurodegeneration dementia with lewy bodies(DLB)

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Improvement of the FP Gas Discharge Quantification Method Pr...

The optimal stent pusher position to achieve successful ureteral stent insertion under fluoroscopic guidance

The Second Asian and Oceanic Congress for Radiation Protection

作者： makoto hashimoto Toshihide USUI Facility Radiation Protection 1 O-arai Research＆Development CenterJapan Atomic Energy Agency4002NaritaO-araiIbaraki311-1393Japan Facility Radiation Protection 1 O-arai Research＆Development CenterJapan Atomic Energy Agency4002NaritaO-araiIbaraki311-1393Japan

The gas monitors at stack of nuclear reactor facilities are applied for continuous monitoring of radioactive gas *** the monitors are set for expected discharge,they are not enough ready to evaluate the gaseous fission product discharge on an *** is necessary to know the actual lineup and the actual abundance of the *** gas configuration evaluation method and the conversion factors of gas monitors for gaseous FP nuclides are *** gas configuration estimation can be achieved by sampling and *** gas sampling jug,of which the structure was suitable for low energy gamma ray detection and for gamma ray calibration,was *** property of the jug was verified by Monte-Carlo calculation and some *** has enough measurement *** conversion factors for gaseous FP nuclides,which are hard to obtain by actual radioactive sources,were derived by simulations with Monte-Carlo calculation *** calculated results were confirmed *** combination of the analysis of the gas in the jug and the monitoring data of the gas monitors with calculated conversion factors were made it practically available to monitor and evaluate the gaseous FP discharge.

关键词： gas monitor gaseous fission product monitoring reactor plant discharge discharge evaluation

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Asian Journal of Urology 2024年第2期11卷 311-315页

作者： makoto Taguchi Kaneki Yasuda Hidefumi Kinoshita Department of Urology Osaka Saiseikai Izuo Hospital Based on Social Welfare Organization“Saiseikai”Imperial Gift Foundation Inc.OsakaJapan Department of Urology and Andrology Kansai Medical UniversityHirakataOsakaJapan

Objective: To examine factors to predict the optimal stent pusher position when inserting ureteral stents under ***: We retrospectively reviewed 327 patients who underwent ureteral stent insertion. We considered the pubic bone as a useful anatomical landmark to insert ureteral stents under fluoroscopic guidance. Thus, we categorized patients into three groups (proximal, middle, and distal groups) according to the position of the radiopaque tip of the push catheter when inserting the ureteral stent. Success was defined as a completely curled ureteral stent tail. We compared stent insertion success rates among the three groups. A multivariate analysis was performed to identify the factors affecting stent insertion ***: In men, 36 (63.2%) cases were deemed successful in the proximal group compared with 40 (80.0%) cases in the middle group and 12 (20.7%) cases in the distal group (p<0.001). In women, 26 (45.6%) cases were deemed successful in the proximal group compared with 54 (98.2%) cases in the middle group and 38 (76.0%) cases in the distal group (p<0.001). With the multivariate analysis, the stent pusher position was the most significant factor influencing successful stent insertion (men: odds ratio 6.00, 95% confidence interval 2.66-13.51, p<0.001;women: odds ratio 37.80, 95% confidence interval 4.94-289.22, p<0.001).Conclusion: The position of the stent pusher affects stent insertion success. The middle of the pubic symphysis is the optimal position for the radiopaque tip of the pusher when inserting ureteral stents under fluoroscopic guidance.

关键词： Stent Cystoscopy Fluoroscopy Ureter

Humanoid robot heads for human-robot interaction:A review

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Science China(Technological Sciences) 2024年第2期67卷 357-379页

作者： LI Yi ZHU LiXiang ZHANG ZiQian GUO MingFei LI ZhiXin LI YanBiao hashimoto Minoru Key Laboratory of Special Purpose Equipment and Advanced Processing Technology of Ministry of Education Zhejiang University of TechnologyHangzhou 310023China Zhejiang Provincial Key Laboratoryof Special Purpose Equipment and Advanced Processing Technology Zhejang Universityof Technology Hangzhou 310023 China Faculy of Textile Science and Technology Shinshu UniversityUeda 386-8567Japan

The humanoid robot head plays an important role in the emotional expression of human-robot interaction(HRI).They are emerging in industrial manufacturing,business reception,entertainment,teaching assistance,and tour *** recent years,significant progress has been made in the field of humanoid ***,there is still a lack of humanoid robots that can interact with humans naturally and *** review comprises a comprehensive survey of state-of-the-art technologies for humanoid robot heads over the last three decades,which covers the aspects of mechanical structures,actuators and sensors,anthropomorphic behavior control,emotional expression,and human-robot ***,the current challenges and possible future directions are discussed.

关键词： humanoid robot head anthropomorphic behaviors emotional expression human-robot interaction

Quantitative Determination of Click Reaction in the Presence of Glycine Derivatives and in Dilute Solution

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International Journal of Organic Chemistry 2012年第3期2卷 302-304页

作者： Yui Ogasawara Yuta Murai Yasuko Sakihama Yasuyuki Hashidoko makoto hashimoto Graduate School of Agriculture Hokkaido University Sapporo Japan

The click reaction is one of the latest techniques for the functional analysis of bioactive compounds and the analysis makes novel concepts and strategies for medicinal chemistry. N-methylated glycine derivatives have inhibitory activity for the click reaction in direct Cu(I) system because of decrease of Cu(I) concentration. The Cu(I) concentration recovered effectively by sodium ascorbate. Quantitative determination of click reaction at various ligand concentrations revealed that the decrease in reaction yields was observed in a substrate concentration-dependent manner.

关键词： Click Chemistry Quantitative Determination Propargylglycine Cu(I) Buffer