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Temporal variation in modal properties of a base-isolated building during an earthquake

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第1期11卷 1-8页

作者： Izuru TAKEWAKI Mitsuru nakamura Department of Urban and Environmental Engineering Graduate School of EngineeringKyoto University Technical Research Institute Obayashi Corporation

Temporal variation of dynamical modal properties of a base-isolated building is investigated using earthquake records in the building. A batch processing least-squares estimation method is applied to segment-wise time-series data. To construct an input-output system,an auto-regressive model with exogenous input (ARX) of second-order including a forgetting coefficient as a weighting coefficient is used for the estimation of modal parameters. The fundamental and second natural frequencies and the damping ratios of the fundamental and second natural modes of the base-isolated building are identified in the time domain. The identified results are consistent with the results obtained from the micro-tremor vibration data,forced-vibration test data and earthquake records in the present base-isolated building in the case of taking into account the amplitude-dependency of the isolators and viscous dampers. It is finally pointed out that several factors,e.g.,amplitude dependency of the isolator and damper system and special characteristics of the series-type viscous damper system,may be related complicatedly with the temporal variation in modal properties of the above-mentioned system.

关键词： System identification Shear building model Modal parameters Batch processing least-squares estimation method Forgetting coefficient Auto-regressive model with exogenous input (ARX) model

Modern Biotechnology—Current Standards in Japan

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Biomedical and Environmental Sciences 2001年第1期14卷 40-43页

作者： YASUHISA nakamura DeputyDirector StandardsDivisionDepartmentofFoodSanitationMinistryofHealth

In the past few years, a new technology, biotechnology, has come into practical use internationally. It is prospective that application of biotechnology in the field of food production may lead to improved food quality and productivity.　　Modern biotechnology, through the use of recombinant DNA techniques, has been used for food production for some time now. Therefore, particular attention should be paid to the safety of foods and food additives produced by recombinant DNA techniques. For this reason, Japan set out the “Guideline for Safety Assessment of Foods and Food Additives Produced by Recombinant DNA Techniques” and “Guideline for Manufacturing Foods and Food Additives Produced by Recombinant DNA Techniques,” in 1991.

关键词： food additives food production Safety Assessment new technology food quality

Special Issue for some new progress made by AMSS and Kyoto University on mathematical methods for informatics,engineering and management

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Journal of Systems Science & Complexity 2010年第1期23卷 1-2页

作者： Yoshimasa nakamura Kyoto University

This special issue presents some new progress in mathematical methods for informatics, engineeringand management that is expected to trigger thought and deepen further research. Forthis purpose, 14 papers were selected mainly from the invited talks at the CAS-Kyoto UniversityJoint Workshop on Mathematical Methods for Informatics, Engineering and Management,

关键词： Special Issue for some new progress made by AMSS and Kyoto University on mathematical methods for informatics,engineering and management

Impairment of innate immune responses in cirrhotic patients and treatment by branched-chain amino acids

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World Journal of Gastroenterology 2014年第23期20卷 7298-7305页

作者： Ikuo nakamura Department of Gastroenterology Tokyo Medical UniversityTokyo 160-0023Japan Department of Gastroenterology Saitama Medical CenterJichi Medical UniversitySaitama 330-8503Japan

It has been reported that host defense responses, such as phagocytic function of neutrophils and natural killer (NK) cell activity of lymphocytes, are impaired in cirrhotic patients. This review will concentrate on the impairment of innate immune responses in decompensated cirrhotic patients and the effect of the treatment by branched-chain amino acids (BCAA) on innate immune responses. We already reported that phagocytic function of neutrophils was significantly improved by 3-mo BCAA supplementation. In addition, the changes of NK activity were also significant at 3 mo of supplementation compared with before supplementation. Also, Fisher’s ratios were reported to be significantly increased at 3 mo of BCAA supplementation compared with those before oral supplementation. Therefore, administration of BCAA could reduce the risk of bacterial and viral infection in patients with decompensated cirrhosis by restoring impaired innate immune responses of the host. In addition, it was also revealed that BCAA oral supplementation could reduce the risk of development of hepatocellular carcinoma in cirrhotic patients. The mechanisms of the effects will also be discussed in this review article.

关键词： Branched-chain amino acids Liver cirrhosis Innate immunity Natural killer cell activity of lymphocytes Phagocytic function of neutrophils

Pattern sourcebook : around the world : 250 patterns for projects and designs / Shigeki nakamura.

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Pattern sourcebook : around the world : 250 patterns for pro...

Pattern sourcebook : Chinese style : 250 patterns for projects and designs / Shigeki nakamura.

2008年

作者： Shigeki nakamura.

Title translated: 图案资料集: 世界各地 Originally published in Japan by MdN Corporation, Tokyo, Japan.

ISBN: (纸本)9781592534968

Title translated: 图案资料集: 世界各地 Originally published in Japan by MdN Corporation, Tokyo, Japan.

关键词： Decoration and ornament Repetitive patterns (Decorative arts)

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Pattern sourcebook : Chinese style : 250 patterns for projec...

The relationship between formate adsorption energy and electronic properties: A first principles density functional theory study

2008年

作者： Shigeki nakamura.

Title translated: 图案资料集: 中国风格 Originally published in Japan by MdN Corporation, Tokyo, Japan.

ISBN: (纸本)9781592534975

Title translated: 图案资料集: 中国风格 Originally published in Japan by MdN Corporation, Tokyo, Japan.

关键词： Decoration and ornament China.

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Science China Chemistry 2009年第9期52卷 1427-1433页

作者： MORIKAWA Yoshitada nakamura Junji The Institute of Scientific and Industrial Research (ISIR) Osaka University Research Institute for Computational Sciences (RICS) National Institute of Advanced Industrial Science and Technology (AIST) Institute of Materials Science University of Tsukuba

First principles density functional theory calculations have been performed for the chemisorption of formate adsorption on some metal surfaces. For the most stable adsorption site of short-bridge, the calculated formate adsorption energy follows the order of Au(110) < Ag(110) < Cu(110) < Pd(110) < Pt(110) < Ni(110) < Rh(110) < Fe(100) < Mo(100), and a clear linear correlation exists between the adsorption energy and the corresponding heat of formation of metal oxides. Moreover, it has been found that the formate adsorption energy for the transition metals can be correlated well with its d-band center (εd), and the IB Group metals can be described by the coupling matrix element square (Vad2).

关键词： formate metal DFT-GGA slab model adsorption energy d-band center

Identification of shared and unique gene families associated with oral clefts

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International Journal of Oral Science 2017年第2期9卷 104-109页

作者： Noriko Funato Masataka nakamura Department of Signal Gene Regulation Research Center for Medical and Dental SciencesTokyo Medical and Dental University1-5-45 YushimaBunkyo-kuTokyoJapan

Oral clefts, the most frequent congenital birth defects in humans, are multifactorial disorders caused by genetic and environmental factors. Epidemiological studies point to different etiologies underlying the oral cleft phenotypes, cleft lip(CL),CL and/or palate(CL/P) and cleft palate(CP). More than 350 genes have syndromic and/or nonsyndromic oral cleft associations in humans. Although genes related to genetic disorders associated with oral cleft phenotypes are known, a gap between detecting these associations and interpretation of their biological importance has remained. Here, using a gene ontology analysis approach, we grouped these candidate genes on the basis of different functional categories to gain insight into the genetic etiology of oral clefts. We identified different genetic profiles and found correlations between the functions of gene products and oral cleft phenotypes. Our results indicate inherent differences in the genetic etiologies that underlie oral cleft phenotypes and support epidemiological evidence that genes associated with CL/P are both developmentally and genetically different from CP only, incomplete CP, and submucous CP. The epidemiological differences among cleft phenotypes may reflect differences in the underlying genetic causes. Understanding the different causative etiologies of oral clefts is important as it may lead to improvements in diagnosis, counseling, and prevention.

关键词： cleft palate epidemiology gene ontology mutations soft palate syndrome

TC10 as an essential molecule in axon regeneration through membrane supply and microtubule stabilization

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Neural Regeneration Research 2022年第1期17卷 87-88页

作者： Takeshi nakamura Shingo Koinuma Division of Cell Signaling Research Institute for Biomedical SciencesTokyo University of ScienceNodaJapan

Mammalian central nervous system(CNS)neurons lose axon regenerative ability as they *** failure to regenerate shows a clear contrast to a remarkable potential of axon growth during embryonic development and after an injury in the peripheral nervous system(PNS)(Hilton and Bradke,2017).The absence of regeneration in the mature CNS neurons is caused by an inhibitory influence of the environment of the injured axons and the deficit of intrinsic factors that enable regeneration in the PNS(He and Jin,2016).

关键词： stabilization enable axon