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Composite electronic orders induced by orbital Kondo effect

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Science Bulletin 2016年第20期61卷 1563-1582页

作者： yoshio Kuramoto Institute of Materials Structure Science High Energy Accelerator Research Organization

In a large number of rare-earth and actinide systems,Kondo effect tends to suppress magnetic orders by making the spin singlet between localized and conduction electron *** the presence of orbital degrees of freedom,however,there emerge exotic electronic orders induced by Kondo *** orbital Kondo effect can collectively make diagonal and off-diagonal(superconducting) *** the particle-hole symmetry in conduction bands,these orders are all degenerate,forming a macroscopic SO(5) *** paper discusses recent theoretical development on these electronic orders which are relevant to Pr^(3+) and U^(4+) systems with even number of f electrons per *** the superconducting order,each conduction–electron pair is coupled with local degrees of freedom,forming a composite entity with a staggered spatial *** quasi-particle spectrum is best interpreted as virtual hybridization with resonant states at the Fermi *** order parameter for URu_2Si_2 in the hidden order state is discussed in the context of composite *** discussed are related issues such as homogeneous odd-frequency pairing and SO(5) theory for hightemperature superconductors.

关键词： Orbital Kondo effect Composite orderOdd-frequency order S0(5) symmetry -Non-Kramers states

Dimethyltyrosine, the Viagra of Opioids

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Chemical Research in Chinese Universities 2006年第2期22卷 258-262页

作者： Lawrence H. Lazarus Sharon D. Bryant Severo Salvadori Remo Geurrini Gianfranco Balboni Yuko tsuda yoshio Okada Peptide Neurochemistry LCBRA National Institute of Environmental Health Sciences Research Triangle Park NC 27709 USA Department of Pharmaceutical Science University of Ferrara I-44100 Ferrara Italy Department of Pharmaceutical Science University of Ferrara I-44100 Ferrara Italy Department of Toxicology University of Cagliary Cagliary 109126 Italy Faculty of Pharmaceutical Science Kobe Gakuin University Nishi-ku Kobe 651-2180 Japan

Introduction The introduction of 2＇ ,6＇-dimethyl-L＇tyrosine （Dmt） at the N-terminus of Tyr-Tic （1,2,3,4-tetra-hydroisoquinoline-3-carboxylic acid ）-containing δ-opioid antagonists enhances receptor affinity and in vitro bioactivity to several orders of magnitude and its application in the formation of ligands with new properties, such as potent inverse agonism. For example, the δ2 agonist,

关键词： Dimethyltryrosine Opioid Agonist

Recent Progress in One-dimensional ZnS Nanostructures:Syntheses and Novel Properties

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Journal of Materials Science & Technology 2008年第4期24卷 512-519页

作者： yoshio BANDO Dmitri GOLBERG Nanoscale World Premier International Center for Materials Nanoarchitectonics and Nanoscale Materials Center National Institute for Materials ScienceNamiki 1-1TsukbaIbaraki 305-0044Japan

In this review, the progress made during the last two years with respect to the syntheses and novel properties of one-dimensional （1D） ZnS nanostructures is presented. Primarily the research on 1D ZnS nanostructures has been of growing interest owing to their promising applications in nanoscale optoelectronic devices. Diverse 1D ZnS nanostructures with delicately-tuned morphologies, sizes, and microstructures have been synthesized through relatively simple and well-controlled techniques. Some novel properties of the nanomaterials have been explored and the relationships between their structural features and functions have been understood gradually.

关键词： Semiconductors ZnS Nanomaterlals Nanostructures Filed-emitters

On a conjecture of Chowla and Walum

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Science China Mathematics 2010年第10期53卷 2755-2771页

作者： TANIGAWA yoshio Graduate School of of Mathematics Nagoya University

We show the asymptotic behaviour of the mean square of the sum n c√x naPk(x/n),where Pk(x) = Bk({x}) and Bk(x) denotes the Bernoulli polynomial of degree k and c > 0 is a real number such that c2 is *** result implie... 详细信息

关键词： the Dirichlet divisor problem error term mean square the Bernoulli polynomial the Vorono formula Chowla and Walum’s conjecture.

Markov decision processes associated with two threshold probability criteria

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控制理论与应用（英文版） 2013年第4期11卷 548-557页

作者： Masahiko SAKAGUCHI yoshio OHTSUBO Department of Mathematics Faculty of ScienceKochi University

This paper deals with Markov decision processes with a target set for nonpositive rewards. Two types of threshold probability criteria are discussed. The first criterion is a probability that a total reward is not greater than a given initial threshold value, and the second is a probability that the total reward is less than it. Our first （resp. second） optimizing problem is to minimize the first （resp. second） threshold probability. These problems suggest that the threshold value is a permissible level of the total reward to reach a goal （the target set）, that is, we would reach this set over the level, if possible. For the both problems, we show that 1） the optimal threshold probability is a unique solution to an optimality equation, 2） there exists an optimal deterministic stationary policy, and 3） a value iteration and a policy space iteration are given. In addition, we prove that the first （resp. second） optimal threshold probability is a monotone increasing and right （resp. left） continuous function of the initial threshold value and propose a method to obtain an optimal policy and the optimal threshold probability in the first problem by using them in the second problem.

关键词： Markov decision process Minimizing risk model Threshold probability Policy space iteration

Analytical study of performance evaluation for seismic retrofitting of reinforced concrete building using 3D dynamic nonlinear finite element analysis

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Earthquake Engineering and Engineering Vibration 2011年第2期10卷 291-302页

作者： Yuichi Sato Shinichi Kajihara yoshio Kaneko Department of Architecture and Architectural Engineering Kyoto University Technology Center Taisei Corporation

This paper presents three-dimensional finite element （FE） analyses of an all-frame model of a three-story reinforced concrete （RC） building damaged in the 1999 Taiwan Chi-Chi Earthquake. Non-structural brick walls of the building acted as a seismic resistant element although their contributions were neglected in the design. Hence, the entire structure of a typical frame was modeled and static and dynamic nonlinear analyses were conducted to evaluate the contributions of the brick walls. However, the results of the analyses were considerably overestimated due to coarse mesh discretizations, which were unavoidable due to limited computer resources. This study corrects the overestimations by modifying （1） the tensile strengths and （2） shear stiffness reduction factors of concrete and brick. The results indicate that brick walls improve frame strength although shear failures are caused in columns shortened by spandrel walls. Then, the effectiveness of three types of seismic retrofits is evaluated. The maximum drift of the first floor is reduced by 89.3%, 94.8%, and 27.5% by Steel-confined, FuI1-RC, and Full-brick models, respectively. Finally, feasibility analyses of models with soils were conducted. The analyses indicated that the soils elongate the natural period of building models although no significant differences were observed.

关键词： reinforced concrete 1999 Taiwan Chi-Chi earthquake nonlinear finite element analysis seismic retrofit brick wall

Semi-polar GaN LEDs on Si substrate

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Science China(Technological Sciences) 2011年第1期54卷 38-41页

作者： Nobuhiko SAWAKI yoshio HONDA Department of Electrical and Electronic Engineering Aichi Institute of Technology Department of Electronics and Akasaki Research Center Nagoya University

Growth of semi-polar （1-101）GaN has been attempted on a patterned （001） silicon substrate adopting selective area MOVPE. The growth was initiated on （111） facets of the Si, which had been prepared by anisotropy etching in a KOH solution. A uni- form semi-polar layer was achieved by coalescence of stripes. Since the growth was performed on facets, the surface was atomically fiat in AFM surface analyses. By using a high temperature grown A1N nucleation layer, we achieved low threading dislocation density at the top most surface. Moreover, by tilting the c-axis of the GaN on the Si substrate, the effect of the thermal expansion coefficient mismatch was much reduced. As the result, we achieved a crack free （1-101）GaN template on （001）Si. On the thus prepared （1-101）GaN, a GalnN/GaN LED was fabricated, which showed excellent performance with weak quantum confined Stark effect.

关键词： GaN selective epitaxy semi-polar GaN MOVPE LED

On a Kaehler Hypersurface with the Cyclic Ricci Semi-symmetric Tensor

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Acta Mathematica Sinica,English Series 2009年第10期25卷 1591-1594页

作者： Norifumi YOKOYAMA yoshio MATSUYAMA Department of Mathematics Chuo University

The purpose of the present paper is to prove that a Kaehler hypersurface with the cyclic Ricci semi-symmetric tensor is locally symmetric.

关键词： Kaehler hypersurfaces cyclic Ricci semi-symmetric tensor locally symmetric

Helicobacter pylori Bab A in adaptation for gastric colonization

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World Journal of Gastroenterology 2017年第23期23卷 4158-4169页

作者： Shamshul Ansari yoshio Yamaoka Department of Environmental and Preventive Medicine Oita University Faculty of Medicine Department of Medicine-Gastroenterology Baylor College of Medicine

Helicobacter pylori(H. pylori) as a causative agent of gastric complications, is well adapted for the colonization of gastric mucosa. Although the infectious process depends on several factors, the adhesion to the gastric mucosa is the first and important step. Among several outer membrane proteins, Bab A is one of the significant protein involving in many inflammatory processes in addition to its role in the attachment for the persistent colonization. We performed a Pub Med search using the key words: "bab A ", "pylori", "gastric complications", "homologous recombination", "slipped strand mispairing"; a total of 249 articles were displayed. Of these we mainly focused on articles with the full text in English and published between 2005 and 2016. H. pylori Bab A is involved in binding with receptors; however, its synthesis is regulated by phase variation. In this review we confirm that H. pylori bab A can be modulated at the molecular and functional levels to adapt to the stress within the gastro-intestinal tract.

关键词： BabA Gastric complications Helicobacter pylori Homologous recombination Slipped strand mispairing