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利用远震波形反演和宽频带地震波正演模拟推断2008年汶川地震的破裂过程

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地壳构造与地壳应力 2014年第1期 24-39页

作者： Takeshi Nakamura seiji tsuboi Yoshiyuki Kaneda Yoshiko Yamanaka 付萍杰 Earthquake and Tsunami Research Project for Disaster Prevention Japan Agency for Marine-Earth Science and Technology Data Research Center for Marine-Earth Sciences and Institute for Research on Earth Evolution Japan Agency for Marine-Earth Science and Technology Research Center for Seismology Volcanology and Disaster Mitigation Graduate School of Environmental Studies Nagoya University

本文利用远震波形探讨了2008年5月12日汶川地震的震源过程。我们将震源分成西南段和东北段，并通过反演的波形残差分析推测了东北段可能的倾角。滑动分布的结果表明：震中附近表现为逆冲运动，而从震中东北方向110km附近至断层的东北端... 详细信息

本文利用远震波形探讨了2008年5月12日汶川地震的震源过程。我们将震源分成西南段和东北段，并通过反演的波形残差分析推测了东北段可能的倾角。滑动分布的结果表明：震中附近表现为逆冲运动，而从震中东北方向110km附近至断层的东北端主要表现为走滑运动。推断的最大滑移量和地震矩分别高达11．0m和1．2×10刭Nm（MWw8．0）。此外，我们假定了一个三维地球结构，采用谱元法，通过宽频带地震波的模拟验证了该震源模型。在20～150s的频率范围内，无论是体波还是面波，模拟得到的合成波形和观测到的波形都具有较好的吻合度。本模型中，东北段高倾角的走滑机制所对应的面波拟合残差在60～500s范围内，该残差总体小于其他东北段为逆冲或低倾角走滑机制的模型。使用本文模型计算得到的库仑应力分布表明：西南段的破裂使得东北段的库仑应力发生大幅度的增加。本文认为2008年汶川地震的震源断裂至少包括两个主要的分段：一段为低倾角，以走滑运动为主；另一段为高倾角，以逆冲运动为主。另外，我们还认为汶川主震震源过程中，破裂在这两个分段中发生转换。

关键词：波形反演破裂过程模拟推断地震波宽频带汶川远震利用

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北极地区的地震活动、结构和构造

世界地震译丛 2016年第1期47卷 1-21页

作者： Masaki Kanao Vladimir D. Suvorov Shigeru Toda seiji tsuboi 刘伟(译) 吕春来(校) 不详国家海洋技术中心中国地震局地球物理研究所

"北极"地区,即北极点位于北冰洋的中心。一直以来,北极地区影响着地球从地质时期到现在的环境变化。然而,该地区的地震活动并未得到足够的监测。因此,通过对地震现象进行长期监测并将其作为可持续参数,我们可以更深入地理解地球的构造... 详细信息

"北极"地区,即北极点位于北冰洋的中心。一直以来,北极地区影响着地球从地质时期到现在的环境变化。然而,该地区的地震活动并未得到足够的监测。因此,通过对地震现象进行长期监测并将其作为可持续参数,我们可以更深入地理解地球的构造演化和地球表层的低温层与岩石层之间的动态相互作用。本文研究了北极地区地震活动与结构的联系,特别着眼于欧亚大陆及其周围海洋,以及其与地球历史时期地区演化的关系。目标区涵盖了北极欧亚区有代表性的构造区,例如西伯利亚的广袤地区、贝加尔裂谷带、俄罗斯远东地区、北冰洋,以及格陵兰和加拿大北部。基于对地震活动特征等的讨论,本文总结了北极地球表面的地壳和上地幔的非均匀结构、大地构造史和最近的动力学特征。

关键词：北极地区地震活动构造地质学地球结构全球网络冰川地震

Highly Efficient Hybrid White Tandem Organic Light-Emitting Diodes with MoO3 Layer

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Chinese Journal of Chemistry 2015年第8期33卷 859-864页

作者： Lian Duan Taiju tsuboi Yong Qiu Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of Chemistry Tsinghua University Beijing 100084 China Kyoto Sangyo University Kamigamo Kita-ku Kyoto 603-8555 Japan Institute of Advanced Materials Nanjing Tech University Nanjing Jiangsu 210009 China

Electroluminescence （EL） characteristics have been studied for a hybrid tandem white organic light emitting diode （OLED） with a blue emitting fluorescent EL1 unit based on BCzVBi and a yellow emitting phosphorescent EL2 unit based on （fbi）2Ir（acac）, where a MoO3 layer is inserted between EL1 and EL2 units as charge generation layer （CGL）. Maximum current and power efficiencies of 68.1 cd/A and 29.2 lm/W were obtained, respectively, while the current and power efficiencies at luminance of 1000 cd/m2 were 68.0 cd/A and 24.6 lm/W. The yellow emission appears from about 4.5 V firstly, while the blue emission starts to appear from about 5.4 V. It was found that charge generation from CGL of MoO3/NPB bilayer occurred at high voltages of above 5.4 V but not at low voltages below 5.2 V.

关键词： organic light emitting diode white emission tandem device

Optical-transition Probability of Tm^(3+) Ions in Tm^(3+)/Er^(3+):YVO_4 Crystal

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Chinese Journal of Structural Chemistry 2004年第4期23卷 381-385页

作者：张莉珍王国富 Taiju tsuboi Fujian Institute of Research on the Structure of Matter The Chinese Academy of SciencesFuzhouFujian 350002ChinaGraduate School of the Chinese Academy of SciencesBeijing 100039China Graduate School of the Chinese Academy of Sciences Beijing 100039China Faculty of Engineering Kyoto Sangyo UniversityKamigamoKita-KuKyoto 603-8555Japan

The polarized absorption spectra of Tm3+/Er3+:YVO4 crystal were measured at room temperature. Based on the Judd-Ofelt theory, the spectral parameters were obtained: the intensity parameters Wl of Tm3+ in Tm/Er:YVO4 crystal: W2 = 10.69×10-20, W4 = 0.604×10-20, W6 = 2.05×10-20 cm2 for the (100) face and W2 = 10.43×10-20, W4 = 0.13×10-20, W6 = 1.83×10-20 cm2 for the (001) face. Based on these values, the oscillator strength, radioactive lifetime and fluorescence branch ratio were calculated for Tm3+ in Tm/Er:YVO4 crystal.

关键词： spectral parameters Tm^(3+)/Er^(3+):YVO_4 crystal Judd-Ofelt theory

Simultaneous enhancement of efficiency and stability of OLEDs with thermally activated delayed fluorescence materials by modifying carbazoles with peripheral groups

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Science China Chemistry 2019年第3期62卷 393-402页

作者： Yunge Zhang Dongdong Zhang Taiju tsuboi Yong Qiu Lian Duan Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of Chemistry Tsinghua University Department of Polymer Science and Engineering Zhejiang University

Albeit their high efficiencies, the operational stability of the organic light emitting diodes(OLEDs) based on thermally activated delayed fluorescence(TADF) emitters is still far from satisfaction, and few strategies have been proposed to improve their stability. Here, we show that by modifying the carbazole unit, one of the most commonly used donors in TADF emitters, with peripheral groups, both the device efficiency and operational stability can be greatly improved. Awell-known TADF molecule—4,5-di(9H-carbazol-9-yl)phthalonitrile(2CzPN) was chosen as the prototype and modified by introducing peripheral tert-butyl and phenyl groups to the 3,6-positions of the carbazole(named 2tBuCzPN and 2PhCzPN, respectively). The introduced groups not only improve the compounds' electrochemical stabilities referred to the cyclic voltammetry multi-sweep results, but also promote their photoluminescence quantum yields. Furthermore, reduced singlet-triplet energy gaps are observed, leading to the shortened exciton lifetimes which are benefit to suppress the exciton annihilations. Besides, the steric hindrance of introduced phenyl groups can partly restrain the concentration quenching of the TADF emitter. Consequently, OLEDs based on 2tBuCzPN and 2PhCzPN achieved improved maximum external quantum efficiencies(EQEs) of 17.0% and 14.0%, respectively(compared to 8.5% for 2CzPN). Meanwhile, 2PhCzPN based OLED showed reduced roll-off characteristics and a longer lifetime of 7.8 times higher than that of 2CzPN, testifying the effectiveness of subtle modification of the unstable moieties in simultaneous enhancement of efficiency and stability of OLEDs based on TADF emitters.

关键词： TADF OLED stability carbazole peripheral group

Method for the proposal and evaluation of urban structures for compact cities using an expert system

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Frontiers of Architectural Research 2016年第4期5卷 403-411页

作者： Shirou tsuboi Shinji Ikaruga Takeshi Kobayashi Graduate School of Science and Engineering Yamaguchi University Yamaguchi-shi 753-8511 Japan

The world population is continually increasing, but the Japanese population is decreasing. By 2050, the Japanese population is calculated to be close to 100 million people, and by 2060, 40% of the Japanese are estimated to be aged 65 years or more. Data show an increase in the declining birth and aging rates of the population. The development of high-concentration urban structures will be needed to solve such problems. However, a detailed vision of the future is yet to be clarified and in the process of consideration. In this study, we developed an instrument called ＂Population Migration Tool,＂ which is based on plural planning and policy, after we formed a future population distribution model. In addition, We also established a high- concentration urban structure model with this tool with the aim of considering the kind of urban structure local cities should target in the future.

关键词： Local city Compact city Future population Visualization Concentration urbanstructure

Neuronal guidance genes in health and diseases

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Protein & Cell 2023年第4期14卷 238-261页

作者： Junichi Yuasa-Kawada Mariko Kinoshita-Kawada Yoshio tsuboi Jane Y.Wu Department of Neurology Fukuoka University7.451 NanakumaJohnan.kuFukuoka 814-0180Japan Department of Neurology Center for Genetic MedicineLurie Cancer CenterNorthwestern University Feinberg School of MedicineWard Building Box 6117303E.Chicago AvenueChicagoIlinois 60611.USA

Neurons migrate from their birthplaces to the destinations,and extending axons navigate to their synaptic targets by sensing various extracellular cues in spatiotemporally controlled *** evolutionally conserved guidance cues and their receptors regulate multiple aspects of neural development to establish the highly complex nervous system by mediating both short-and long-range cell-cell *** guidance genes(encoding cues,receptors,or downstream signal transducers)are critical not only for development of the nervous system but also for synaptic maintenance,remodeling,and function in the adult *** emerging theme is the combinatorial and complementary functions of relatively limited classes of neuronal guidance genes in multiple processes,including neuronal migration,axonal guidance,synaptogenesis,and circuit ***,neuronal guidance genes also regulate cell migration and cell-cell communications outside the nervous *** are just beginning to understand how cells integrate multiple guidance and adhesion signaling inputs to determine overall cellular/subcellular behavior and how aberrant guidance signaling in various cell types contributes to diverse human diseases,ranging from developmental,neuropsychiatric,and neurodegenerative disorders to cancer *** review classic studies and recent advances in understanding signaling mechanisms of the guidance genes as well as their roles in human ***,we discuss the remaining chalienges and therapeutic potentials of modulating neuronal guidance pathways in neural repair.

关键词： axon guidance neuronal migration synaptogenesis neural circuit formation neural mapping cell-cell communications angiogenesis organogenesis cancermetastasis

Detonation Propagation in Narrow Gaps with Various Configurations

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Journal of Thermal Science 2007年第3期16卷 283-288页

作者： M.Monwar ynu.ac.jp) Y.Yamamoto K.Ishii T.tsuboi Department of Mechanical Engineering Yokohama National University79-5 TokiwadaiHodogaya-kuYokohama 240-8501Japan.(Email address:d05sb192

In general all detonation waves have cellular structure formed by the trajectory of the triple points. This paper aims to investigate experimentally the propagation of detonation in narrow gaps for hydrogen-oxygen-argon mixtures in terms of various gap heights and gap widths. The gap of total length 1500 mm was constructed by three pair of stainless plates, each of them was 500 mm in length, which were inserted in a detonation tube. The gap heights were varied from 1.2 mm to 3.0 mm while the gap widths were varied from 10 mm to 40 mm. Various argon dilution rates were tested in the present experiments to change the size of cellular structure. Attempts have been made by means of reaction front velocity, shock front velocity, and smoked foil to record variations of cellular structure inside the gaps. A combination probe composed of a pressure and an ion probe detected the arrival of the shock and the reaction front individually at one measurement point. Experimental results show that the number of the triple points contained in detonation front decreases with decrease in the gap heights and gap widths, which lead to larger cellular structures. For mixtures with low detonability, cell size is affected by a certain gap width although conversely cell size is almost independent of gap width. From the present result it was found that detonation propagation inside the gaps is strongly governed by the gap height and effects of gap width is dependent on detonability of mixtures.

关键词： Detonation cellular structure gap configuration triple point

Degradation Mechanisms in Blue Organic Light-Emitting Diodes

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CCS Chemistry 2020年第4期2卷 1278-1296页

作者： Dan Wang Cong Cheng Taiju tsuboi Qisheng Zhang MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027

An organic light-emitting diode(OLED)is required to exhibit long-time operation without degradation as an inorganic *** long operation time has been demonstrated for green-and red-emitting ***,a blue device that is important for full-color display and lighting exhibits a much shorter operational lifetime than the other color *** short lifetime is mainly attributed to the molecular dissociation and the defects and radical species formation through various unimolecular and bimolecular processes,including direct photolysis,exciton–exciton interaction,and exciton–polaron interaction,and so on.

关键词： fluorescent organic light-emitting diodes phosphorescent organic light-emitting diodes thermally activated delayed fluorescence device degradation operational lifetime molecular dissociation