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Microstructure and Texture Changes of Tungsten-Rhenium coated on Carbon Fiber Composite during Annealing

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Southwestern Institute of Physics Annual Report 2002年第1期 66-69页

作者： LIUXiang XUZengyu S.tamura N.Yoshida 不详 ResearchInstituteforAppliedMechanics KyushuUniversity6-1KasugakoenKasugaFukuoka816-8580Japan

Since tungsten was chose as the divertor tiles of 1TER, the investigation of tungsten and its coating as plasma facing material (PFM) have been paid more attentions by fusion scientists all over the world. Recent year... 详细信息

关键词：钨-铹镀层微观结构碳素纤维退火处理等离子体防面材料聚变反应堆

Coffee Modulates the Function of Brain-Derived Neurotrophic Factor (BDNF) in Human Neuroblastoma SH-SY5Y Cells

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Neuroscience & Medicine 2015年第4期6卷 165-174页

作者： Shota Kakio Yosuke Nakazawa Megumi Funakoshi-Tago Hiroomi tamura Graduate School of Pharmaceutical Sciences Keio University Tokyo Japan

Recent epidemiological studies showed that daily coffee consumption is associated with a lower risk for several neurological disorders such as Alzheimer’s disease and Parkinson’s disease;however, the molecular mechanisms responsible for the protective effect of coffee against neurological disorders have not been elucidated. As brain-derived neurotrophic factor (BDNF) promotes neuronal survival and protects against neuronal damage, we investigated the effects of coffee on BDNF signaling using human neuroblastoma SH-SY5Y cells. We found that brewed coffee exerted an inhibitory effect on the autophosphorylation of tropomyosin receptor kinase B (TrkB), a BDNF receptor. Additionally, coffee reduced the phosphorylation of Akt in BDNF-treated SH-SY5Y cells. Treatment with coffee did not affect the TrkB receptor on the cell surface. The major constituents of coffee, such as caffeine, caffeic acid, chlorogenic acid, and trigonelline had no effect on TrkB phosphorylation induced by BDNF. In addition, coffee reduced the BDNF-induced increase in BDNF gene expression and the neurite outgrowth promoted by BDNF. Our data suggest that the protective effect of coffee reported in epidemiological studies against neurological disorders may not be associated with BDNF signaling through TrkB.

关键词： BDNF Coffee Neuroprotection TrkB

Surfactant Protein D for Pathological Evaluation of Infant Acute Respiratory Distress Syndrome Caused by Respiratory Syncytial Virus Infection

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Open Journal of Pediatrics 2020年第4期10卷 652-660页

作者： Daisuke tamura Shun Inoue Takatoshi Oishi Ayafumi Ozaki Takanori Yamagata Department of Pediatrics Jichi Medical University Tochigi Japan

Pediatric respiratory syncytial viral infection (RS) usually shows relatively good outcome;however, when it accompanies acute respiratory distress syndrome (ARDS), this becomes fatal. We experienced three pediatric patients with RS + ARDS, with all showing good outcome with steroid pulse therapy. We wish to emphasize;1) steroid pulse therapy may become an option for this condition, and 2) plasma KL-6 and surfactant protein D levels may become a biomarker reflecting the disease progression/condition. Patients were, aged 1 month, 1 year 5 months, and 1 year 11 months. In all three, the respiratory condition deteriorated rapidly, requiring invasive ventilator management. Although the effectiveness of steroid treatment for ARDS is controversial, very severe condition prompted us to employ steroid pulse therapy, after which, oxygenation rapidly improved without adverse events. Plasma KL-6 and surfactant protein D levels were measured during exacerbations of ARDS, steroid pulse therapy, and recovery. Surfactant protein D levels were closely associated with oxygenation, suggesting this substance level might be a biomarker of ARDS caused by the disruption of the alveolar epithelial lining and to understand oxygenation without time lag.

关键词： Infants Respiratory Syncytial Virus Acute Respiratory Distress Syndrome Surfactant Protein D KL-6

Difference in Structural Relaxation Times of Inner Surface and Inner Bulk Region of Silica Glass Arc Tube

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New Journal of Glass and Ceramics 2013年第1期3卷 48-52页

作者： Takuya Honma Nobuhiro tamura Kazuya Saito Edson Sekiya Protection & Material Engineering Department Toshiba Lighting & Technology Corporation Yokosuka Japan Research Center for Advanced Photon Technology Toyota Technology Institute Nagoya Japan

The fictive temperature and structural relaxation of a silica glass arc tube were investigated to elucidate the origin of cracking in the arc tubes used in high-intensity discharge lamps for vacuum ultraviolet light sources. The structural relaxation time near the inner surface was decreased much more than that in the inner bulk region, resulting in a large difference in the fictive temperature between these two areas at high-intensity discharge lamp operating temperatures. This difference should induce strain in the silica glass network. On the basis of our results, we suggest ways to avoid cracking and extend the lifetime of high-intensity discharge lamps.

关键词： Structural Relaxation Time Fictive Temperature High-Intensity Discharge Lamps

ROBUST CONTROL OF NONLINEAR SYSTEMS WITH DISTURBANCE ATTENUATION

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ROBUST CONTROL OF NONLINEAR SYSTEMS WITH DISTURBANCE ATTENUA...

第二十届中国控制会议

作者： Kazuhisa Itou Yasuhiko Mutoh Katsutoshi tamura Sophia University Kioicho 7-1Chiyoda-kuTokyo 102-8554Japan Sophia University Kioicho 7-1Chiyoda-kuTokyo 102-8554Japan Sophia University Kioicho 7-1Chiyoda-kuTokyo 102-8554Japan

＜正＞For SISO uncertain nonlinear system, we show how the problem of global robust stabilization via recursive design can be solved by using less conservative bounding functions. The system is assumed to have gain bounded unknown nonlinear functions with a semi-strict feedback structure. Moreover, by modifying a Lyapunov-like function, we extend the obtained controller to have a disturbance attenuation property.

关键词： nonlinear systems robust stabilization robust L2 gain disturbance attenuation Lyapunov-based recursive design

基于风洞试验的单层网壳结构有效风荷载分布估计

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基于风洞试验的单层网壳结构有效风荷载分布估计

第十一届全国结构风工程学术会议

作者：李元齐 Yukio tamura 沈祖炎同济大学建筑工程系 WERC Tokyo Polytechnic Univ Atsugi 243-0297Japan 同济大学建筑工程系

单层网壳结构对外部荷载分布极为敏感,且稳定问题是其结构设计中的主要问题, 因此,具有随机特性的风荷载分布对其结构分析显得非常重要。目前,这类结构的抗风分析仍采用等效静力分析方法,但分析中所采用的等效静风荷载分布很可能并不能... 详细信息

单层网壳结构对外部荷载分布极为敏感,且稳定问题是其结构设计中的主要问题, 因此,具有随机特性的风荷载分布对其结构分析显得非常重要。目前,这类结构的抗风分析仍采用等效静力分析方法,但分析中所采用的等效静风荷载分布很可能并不能反映出脉动分量对结构稳定性的实际影响。本文首先简单回顾了目前单层网壳结构抗风分析的方法,之后介绍了一种基于风洞试验结果进行有效风荷载分布估计的分析方案。在此基础上,从稳定分析的角度提出了一种新的方法,可用来简单高效地估计单层网壳结构的有效风荷载分布,同时还可以对风荷载对结构的影响进行保守地分析。最后,采用一个单层球面网壳和一个单层柱面网壳作为算例,基于风洞试验的结果,比较考察了不同估计方法在分析这类结构的极限承载能力及稳定性问题时的效率。结果表明,本文提出的分析策略和方法在估计单层网壳结构有效风荷载分布时具有很大的优点。

关键词：单层网壳结构稳定风荷载风洞试验有效风荷载分布

Block Copolymer Composed of Caprolactone and Methylacrylate as a Compatibilizer to Blend Poly（lactic acid） with Oly（caprolactone）

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Block Copolymer Composed of Caprolactone and Methylacrylate ...

2006中日纺织学术交流会

作者： Tomoyuki Kasemura Shinya Takahashi Naohisa tamura Faculty of Engineering Department of Applied Chemistry Gifu University1-1 YanagidoGifu City 501-1193 Japan Faculty of Engineering Department of Applied Chemistry Gifu University1-1 YanagidoGifu City 501-1193 Japan Faculty of Engineering Department of Applied Chemistry Gifu University1-1 YanagidoGifu City 501-1193 Japan

＜正＞1 Introduction Aliphatic polyesters such as poly（L-lactic acid）（PLLA）, poly（ε-caprolactone）（PCL）, poly（butylenesuccinate）（PBS） and so on have been noticed because of their bio-degradability. However, these polymers do not have enough properties for practical application. For example, PLLA is too rigid and brittle, PCL has too low melting temperature and PBS is too flexible. Therefore, many

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Estimating the Fluid Core Resonance Based on Strain Observation

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Estimating the Fluid Core Resonance Based on Strain Observat...

作者： Yoshiaki tamura Koji Matsumoto Tadahiro Sato National Astronomical Observatory 2-12 Hoshigaoka Mizusawa Iwate 023-0861 Japan

Esashi Earth Tides Station has been operated for tidal observations from 1979. Among the observations, a long term extensometer data for 3 components of both free end point recorders and middle point

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Methods of <i>N</i>-acetylated chitosan scaffolds and its <i>In-vitro</i>biodegradation by lysozyme

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Journal of Biomedical Science and Engineering 2012年第1期5卷 15-23页

作者： Thazin Han Nitar Nwe Tetsuya Furuike Seiichi Tokura Hiroshi tamura 不详

Generally, the lysozyme degradation on chitosan (CTS) is slower than that of chitin (CT). The CTS can be fabricated in scaffold form but it is difficult to fabricate CT scaffold under mild conditions. The method for the preparation of scaffold from N-acetylated CTS (N-CTS) was investigated in this research. By using this method, the scaffolds could be fabricated chitosan to chitin with the degree of acetylation (DA) 18% - 70%. Among these scaffolds, the highest degradation of scaffold by lysozyme was observed on the N-CTS scaffold with DA 60%, which determined by examination of the reducing end contents in the degradation media and by measuring the weight loss of scaffolds. Moreover, the best condition for the degradation of N-CTS scaffold with DA70% by lysozyme was also investigated. The maximum degradation rate of the scaffold was observed on the treatment with lysozyme 500 mg/l of acetate buffer at pH 4.5, 37°C, 100 rpm and for 7 days.

关键词： N-Acetylated Chitosan Scaffold Lysozyme Degradation