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Global Geology 2006年第2期9卷 150-155页

作者： Masaho Yoshida masaru Tonoo Masakatsu Miyajima masaru kitaura Fukui National College of Technology GeshiSabaeFukui 916-8507Japan Kanazawa University Kakuma-machiKanazawaIshikawa 920-1192Japan

The 2004 Niigata-ken Chuetsu earthquake in Japan caused serious damage to sewage facilities such as uplift of manholes and settlement of pavement above backfill soil for *** paper deals with shake table tests in a 1 g gravity field on application of recycled materials for ground improvement to mitigation of liquefaction-induced flotation of manhole during *** recycled materials used in tests were tire chips made of waste tires and crushed gravels made of waste reinforced concrete,and they were packed in *** the test results,it was confirmed that the recycled materials packed in sandbags could be treated as one of the countermeasures to restrain the flotation of manholes and settlement of ground surrounded by sandbags.

关键词： recycled material sandbag liquefaction manhole shake table test

SEISMIC INTENSITY ESTIMATION THROUGH QUESTIONNAIRE SURVEY IN THE 2008 WENCHUAN EARTHQUAKE,SICHUAN,CHINA Paper No.393

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SEISMIC INTENSITY ESTIMATION THROUGH QUESTIONNAIRE SURVEY IN...

Searching for the earliest galaxies in the 21cm forest

ISRM-Sponsored International Symposium on Rock Mechanics:"Rock Characterisation,Modelling and Engineering Design Methods"(SINOROCK2009)

作者： Masakatsu Miyajima masaru kitaura Akira Murata Toshikazu Laboratory of Earthquake Engineering Kanazawa University

Seismic intensity around the epicentral area of the 2008 Wenchuan,Sichuan Province of China earthquake is estimated using a questionnaire survey conducted one month after the *** survey results show that the seismic intensity of Chengdu city is aboutⅦ,Beichuan County and Pengzhou Longmenshan Town aboutⅩ,and Dujiangyan City aboutⅨin MMI scale,above all are basically in agreement with the survey results of Chinese Earthquake Administration(CEA).The analysis results show that there are two subjective factors affecting the survey results of seismic intensity:one is the sexuality and the other is *** seismic intensity value by survey of men is often lower than the women'*** the surveyed people is elder than 60 years or younger than 19 years,the seismic intensity value by surveyed those people usually is higher than the others'.In general,the questionnaire survey is a good method to estimate the seismic intensity near to the populated area,but it is unsuitable in an unpopulated area.

关键词： Wenchuan Earthquake Seismic Intensity Questionnaire Survey

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Science China(Physics,Mechanics & Astronomy) 2010年第6期53卷 1124-1129页

作者： Andrea FERRARA Francisco S. kitaura Scuola Normale Superiore Piazza dei Cavalieri 756126 PisaItaly

We use a model developed by Xu,Ferrara,and Chen(Mon Not Roy Astron Soc,submitted) to compute the 21 cm line absorption signatures imprinted by star-forming dwarf galaxies(DGs) and starless minihalos(MHs). The method,based on a statistical comparison of the equivalent width(W ν ) distribution and flux correlation function,allows us to derive a simple selection criteria for candidate DGs at very high(z ≤ 8) redshift. We find that ≈18% of the total number of DGs along a line of sight to a target radio source(GRB or quasar) can be identified by the condition W ν0.37 kHz instead selects ≈11% of MHs. Selected candidate DGs could later be re-observed in the near-IR by the JWST with high efficiency,thus providing a direct probe of the most likely reionization sources.

关键词： cosmology dwarf galaxies high-redshift galaxies radio absorption lines

Synthesis and TEM structural characterization of C60-flattened carbon nanotube nanopeapods

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Nano Research 2014年第12期7卷 1843-1848页

作者： Qing Wang Ryo kitaura Yuta Yamamoto Shigeo Arai Hisanori Shinohara Department of Chemistry & Institute for Advanced Research Nagoya University Nagoya 464-8602 Japan High Voltage Electron Microscope Laboratory Ecotopia Science Institute Nagoya University Nagoya 464-8602 Japan

A fully flattened carbon nanotube （FNT）, a graphene nanoribbon （GNR） analogue, provides a hollow space at edges for endohedral doping. Due to the unique shape of the hollow space of FNTs, novel types of low-dimensional arrangements of atoms and molecules can be obtained through endohedral doping into FNTs, which provides a new type of nanopeapods. FNT-based nanopeapods have been synthesized through endohedral doping of C60, and their structural characterization with transmission electron microscopy （TEM） performed. The doping of C60 into the inner hollow space of FNTs has been carried out via the gas-phase filling method, where open-ended FNTs are sealed in a glass ampoule and heated at 723-773 K for two days. TEM observations show that most of the encapsulated C60 molecules align as single molecular chains along the edges of FNTs and that some of the C60 forms two-dimensional close-packed structures inside FNTs.

关键词： carbon nanotubes nanopeapods endohedral doping electron microscopy

Rayleigh scattering studies on inter-layer interactions in structure-defined individual double-wall carbon nanotubes

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Nano Research 2014年第10期7卷 1548-1555页

作者： Sihan Zhao Tomoya Kitagawa Yuhei Miyauchi Kazunari Matsuda Hisanori Shinohara Ryo kitaura Department of Chemistry & Institute forAdvanced Research Nagoya University Nagoya 464-8502 Japan Institute of Advanced Energy Kyoto University Uji Kyoto 511-0011 Japan Japan Science and Technology Agency PRESTO Saitama 332-0012 Japan

Although the inter-layer coupling in layered materials has attracted considerable interest due to its importance in determining physical properties of two- dimensional systems, studies on the inter-layer coupling in one-dimensional systems have so far been limited. Double-wall carbon nanotubes （DWCNTs） are one of the most fundamental and ideal model systems to study the interqayer coupling in one-dimensional systems. In this work, Rayleigh scattering spectroscopy and transmission electron microscopy are used to characterize the electronic transition between inner-and outer-nanotubes of the exactly same individual DWCNT. We find that the interqayer coupling is strong, leading to downshifts in most of the optical transition energies （up to -0.2 eV） compared to isolated CNTs. We also find that the presence of metallic tubes lead to stronger shifts. The inter-layer screening of Coulomb interactions is one of the key factors in explaining the observed results.

关键词： inter-layer coupling one-dimensional system electronic properties double-wall carbonnanotubes (DWCNTs) dielectric screening

Length-Sorted Semiconducting Carbon Nanotubes for High-Mobility Thin Film Transistors

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Nano Research 2011年第10期4卷 963-970页

作者： Yasumitsu Miyata Kazunari Shiozawa Yuki Asada Yutaka Ohno Ryo kitaura Takashi Mizutani Hisanori Shinohara Department of Chemistry and Institute for Advanced Research Nagoya University Nagoya 464-8602 Japan Department of Quantum Engineering Nagoya University Nagoya 464-8603 Japan

We have developed a process for chemical purification of carbon nanotubes for solution-processable thin-film transistors （TFTs） having high mobility. Films of the purified carbon nanotubes fabricated by simple drop coating showed carrier mobilities as high as 164 cm2V-1s -1 normalized transconductances of 0.78 Sm-1 and on/off current ratios of 10^6. Such high performance requires the preparation of a suspension of micrometer-long and highly purified semiconducting single-walled carbon nanotubes （SWCNTs）. Our purification process includes length and electronic-type selective trapping of SWCNTs using recycling gel filtration with a mixture of surfactants. The results provide an important milestone toward printed high-speed and large-area electronics with roll-to-roll and ink-jet device fabrication.

关键词： Single-walled carbon nanotubes separation thin-film transistors gel filtration dispersion optical absorption carrier mobility

Quantitative evaluation of perceived depth of transparently-visualized medical 3D data presented with a multi-view 3D display

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International Journal of Modeling, Simulation, and Scientific Computing 2018年第3期9卷 115-130页

作者： Yuichi Sakano Yurina kitaura Kyoko Hasegawa Roberto Lopez-Gulliver Liang Li Hiroshi Ando Satoshi Tanaka Center for Information and Neural Networks(CiNet)National Institute of Information and Communications Technology and Osaka University 2B6CiNet1-4 Yamadaoka SuitaOsaka 565-0871Japan Graduate School of Frontier Biosciences Osaka University 1-4 YamadaokaSuitaOsaka565-0871Japan Graduate School of Information Science and Engineering Ritsumeikan University 1-1-1 Noji-higashi KusatsuShiga 525-8577Japan College of Information Science and Engineering Ritsumeikan University 1-1-1 Noji-higashi KusatsuShiga 525-8577Japan

Transparent visualization is used in many fields because it can visualize not only the frontal object but also other important objects behind *** in many situations,it would be very important for the 3D structures of the visualized transparent images to be perceived as they are simulated,little is known quantitatively as to how such transparent 3D structures are *** address this question,in the present study,we conducted a psychophysical experiment in which the observers reported the perceived depth magnitude of a transparent object in medical images,presented with a multiview 3D *** the visualization,we employed a stochastic point-based rendering(SPBR)method,which was developed recently as a technique for efficient *** depth of the transparent object was smaller than the simulated *** found,however,that such depth underestimation can be alleviated to some extent by(1)applying luminance gradient inherent in the SPBR method,(2)employing high opacities,and(3)introducing binocular disparity and motion parallax produced by a multi-view 3D display.

关键词： Transparent visualization automultiscopic 3D image psychophysics.

High Yield Synthesis and Characterization of the Structural and Magnetic Properties of Crystalline ErCl_(3) Nanowires in Single-Walled Carbon Nanotube Templates

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Nano Research 2008年第2期1卷 152-157页

作者： Ryo kitaura Daisuke Ogawa keita Kobayashi Takeshi Saito Satoshi Ohshima Tetsuya Nakamura Hirofumi Yoshikawa Kunio Awaga Hisanori Shinohara Department of Chemistry and Institute for Advanced Research Graduate School of ScienceNagoya UniversityNagoya 464-8602Japan Nanotube Research Center National Institute of Advanced Industrial Science and TechnologyTsukuba 305-8565Japan PRESTO JapanScience and Technology Agency4-1-8 Honcho kawaguchiSaitama 332-0012Japan Japan Synchrotron Radiation Research Institute Hyogo 679-5198Japan

Crystalline ErCl_(3) nanowires have been fabricated in single-walled carbon nanotubes(SWCNTs)with high yield(~90%),and the structural and magnetic properties of the resulting ErCl_(3) nanowires encapsulated in SWCNTs(ErCl_(3)@SWCNTs)*** under high temperature and vacuum using high quality SWCNTs results in a high fi lling-ratio of ErCl_(3) nanowires in the *** high fi lling-ratio of ErCl_(3) nanowires and the use of highly pure SWCNTs with only a small amount of residual Fe catalyst nanoparticles enabled us to observe the magnetic properties of ErCl_(3)@*** determination based on simulated annealing calculations and high-resolution transmission electron microscope(HRTEM)image simulations revealed that the structure of the ErCl_(3) nanowires is unusual with respect to the coordination environment of the Eu3+*** work opens up new possibilities to fabricate various metal complex nanowires with high yield and may also be of more general importance in understanding and exploring magnetic properties in low-dimensional magnetic systems.

关键词： Low-dimensional nanomaterials carbon nanotubes magnetic properties crystal structure transmission electron microscope

The Fragment Molecular Orbital Method: Practical Applications to Large Molecular Systems Har/Cdr

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Fabrication and characterization of novel nanotube-based hybrid materials

2009年

作者： Dmitri Fedorov, Kazuo kitaura

ISBN: (纸本)1420078488;9781420078480

Answering the need to facilitate quantum-chemical calculations of systems with thousands of atoms, Kazuo kitaura and his coworkers developed the Fragment Molecular Orbital (FMO) method in 1999. Today, the FMO method can be applied to the study of whole proteins and protein–ligand interactions, and is extremely effective in calculating the properties of biological systems and molecular clusters. Providing a unique and accessible approach, The Fragment Molecular Orbital Method: Practical Applications to Large Molecular Systems is for those researchers eager to obtain useful information from electronic structure calculations of large systems, and for those who wish to know what can be elucidated with the calculations at present and in the near future. The text emphasizes the practical aspects, with as little mathematical detail as possible and in language that is easy to understand. The free modeling software Facio, in which FMO-related functions are implemented, is provided on the accompanying CD-ROM, which also provides input file samples, usage hints, annotated output from typical calculations, easy-to-follow tutorial material, and AppliGuide movies that show the sequence of mouse operations for data processing. The book encourages readers to perform their own calculations — describing the features of the freely available FMO programs (GAMESS and ABINIT-MP) and reviewing many successful applications of the FMO method to practical problems. Filled with practical advice from the inventors of the method and from world-renowned contributors, this reference provides general scientists with the foundation required to use FMO computational methods in a wide range of biomolecular applications, including drug design, protein–ligand binding, enzyme reactivity, and light-driven processes. Developers interested in extending FMO capabilities or in advancing their own methods will find sufficient information and mathematical detail to encourage method development

关键词： molecular applications large practical method orbital fragmentInternal Medicine Medicine Medical Professional & Technical

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Fabrication and characterization of novel nanotube-based hyb...