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A Newly Developed Non-Destructive tritium measurement technique and Its Application to V-4Cr-4ti Alloy

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Plasma Science and technology 2006年第6期8卷 741-744页

作者：刘翔陈学 H.homma Y.HAtANO m.mAtSUYAmA Southwestern Institute of Physics Chengdu 610041China Sichuan General Fire Brigade Chengdu 610072China Hydrogen Isotope Research Centre Toyama UniversityGofuku 3190Toyama 930-8555Japan

A non-destructive and in-situ technique for the measurement of tritium in materials, namely β-ray-induced X-ray spectrometry （BIXS）, has been developed recently. In the present study a V-4Cr-4ti alloy was pre-heated at 1000℃ for 2 h to form a recrystallization structure before the tritium absorption experiments were conducted. Firstly the hydrogen isotope gas was charazterized by means of a quadrupole mass spectrometer （QmS） and a small-sized ionization chamber. then hydrogen isotope absorption tests of V-4Cr-4ti alloy were performed at 400 ℃ and the atomic concentration of hydrogen isotope in V-4Cr-4ti alloy was estimated as 0.17% with a tritium content of approximately 2.5 ppm. Experimental results indicate that BIXS is a quite useful tool for quantitatively measuring the tritium content and tritium distribution in the surface layers of vanadium alloys and no strong trapping effects of tritium exist in the pre-heated V-4Cr-4ti alloy.

关键词： tritium V-4Cr-4ti β-ray-induced X-ray spectrometry tritium measurements

Improvement of aerodynamic stability of suspension bridges with H-shaped simplified stiffening girder

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Frontiers of Structural and Civil Engineering 2016年第1期10卷 93-102页

作者： Hiroshi KAtSUCHI Hitoshi YAmADA mayuko NISHIO Yoko okazaki Department of Civil Engineering Yokohama National University Yokohama 240-8501 Japan

Wind-tunnel study on the improvement of aerodynamic stability of simplified suspension-bridge girder structures was conducted with using a 1/40-scaled section model. Objective of the study is the development of an economically superior suspension bridge with 500-1,000 m center span length. the wind-tunnel test showed that an edge-girder type cross section exhibited large amplitude torsional vortex-induced vibration as well as torsional flutter at a low wind speed. Accordingly, aerodynamic countermeasures of open grating deck and triangular fating, and structural countermeasures of center stay, diagonal bracing and mass increase were tried to improve the aerodynamic stability. Finally, feasibility of the best combination to a full-scale bridge was examined by structural analysis.

关键词： suspension bridge aerodynamics simplified girder wind-tunnel test

添加元素对Sm_2Fe_(17)C_x熔淬带材磁性能的改善

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电工合金 1993年第4期 25-30页

作者： S.Sugimoto K.Kurihara H.Nakamura m.Okada m.homma 喻承寅

经过对熔淬前合金铸锭显微组织的研究,确认了在Sm_2(Fe_(0.9)Cr_(0.1))_(17)C_(1.6)合金中,Sm_2Fe_(17)相的构成,具有th_2Zn_(17)类型的结构。Sm_2(Fe_(0.9)Cr_(0.1))_(17)C_(1.6)熔淬带材经温度为750℃退火30分钟后,显示出了672KAm^(-1)(8.4KOe)的矫顽力。对显微结构的研究表明,该带材的晶粒直径为50～150nm。使用X-射线衍射分析,并研究了各种材料的磁滞回线之后,发现随着退火温度的增加,导致相结构从tbCu_(17)类型向th_2Zn_(17)类型转变。含Ga的Sm_2(Fe_(0.9)Ga_(0.1))_(17)C_(1.6)带材,在退火之后获得了680KAm^(-1)(8.5KOe)的矫顽力。进一步在Sm_2(Fe,Cr)_(17)C_(1.6)和Sm_2(Fe,Ga)_(17)C_(1.6)合金中添加Co、mn等,也使其磁性能得到了改善.特别是合金Sm_2(Fe_(0.85)Ga_(0.1)Co_(0.05))_(17)C_(1.6)带材,经650℃、30分钟的退火处理后,获得了高达1008KAm^(-1)(12.6KOe)的矫顽力以及(BH)_(max)为62.4KJm^(-3)(7.8mGOe)的磁能积。这是到目前为止所报导过的、Sm_2Fe_(17)C_x熔淬带材获得的最高磁性能。

关键词：铁磁材料添加元素磁性

meV-and Sub-meV-photon Sources Based on Compton Backscattering at SPring-8 and KPSI-JAEA

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原子核物理评论 2009年第S1期26卷 94-99页

作者： K.Kawase m.Kando t.Hayakawa I.Daito S.Kondo t.homma t.Kameshima H.Kotaki Y.Fukuda A.Faenov t.Shizuma S.V.Bulanov t.Kimura t.tajima m.Shoji S.Suzuki K.tamura H.Ohkuma Y.Arimoto t.Yorita m.Fujiwara S.Okajima Kansai Photon Science Institute Japan Atomic Energy Agency Japan Synchrotron Radiation Research Institute Department of Physics Osaka University Research Center for Nuclear Physics Osaka University

Recently we have constructed two facilities for generating photon beams in the meV and sub-meV energy regions by means of the Compton backscattering with a laser and an electron beam at SPring-8 and at Kansai Photon Science Institute of Japan Atomic Energy Agency(KPSI-JAEA). the meV-photon source at SPring-8 consists of a continuous-wave optically-pumped far infrared laser with a wavelength of 118.8 μm and an 8 GeV stored electron beam. Present meV-photon flux is estimated to be 1.3×103 photons/s. On the other hand,the sub-meV-photon source at KPSI-JAEA consists of a pulse Nd∶YAG laser with a wavelength of 1 064 nm and a 150 meV electron beam accelerated by microtron. In the first trial of the photon production in this source,backscattered photon flux is estimated to be 20 photons/pulse. Both the Compton backscattered photon sources have possibilities to be used for new tools in various fields such as nuclear physics,materials science,and astronomy.

关键词： laser Compton backscattering polarized γ-ray polarized X-ray

A body mass index ≥25 kg/m2 is associated with a poor prognosis in patients with acute pancreatitis: a study of Japanese patients

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Hepatobiliary & Pancreatic Diseases International 2017年第6期16卷 645-651页

作者： tsukasa Ikeura Kota Kato makoto takaoka masaaki Shimatani masanobu Kishimoto Kenichiro Nishi Shuji Kariya Kazuichi okazaki Department of Gastroenterology and Hepatology Kansai Medical University 2-5-1 Shinmachi Hirakata Osaka 5731010 Japan Department of Emergency and Critical Care medicine Kansai Medical University 2-5-1 Shinmachi Hirakata Osaka 5731010 Japan Department of Anesthesiology Kansai Medical University 2-5-1 Shinmachi Hirakata Osaka 5731010 Japan Department of Radiology Kansai Medical University 2-5-1 Shinmachi Hirakata Osaka 5731010 Japan

BACKGROUND:In Asian population, there is limited infor mation on the relevance between obesity and poor outcomes in acute pancreatitis(AP). the objective of this study was to examine the clinical impact of obesity based on body mass index(BmI) on prognosis of AP in Japanese ***:A total of 116 patients with AP were enrolled in this study. Univariate and multivariate logistic regression analyses were performed to examine relations between BmI and patients’ outcomes. Additionally, to investigate whether including obesity as a prognostic factor improved the predic tive accuracy of a Japanese prognostic factor score(PF score)a receiver-operating characteristic(ROC) curve analysis of mortality was ***:multiple logistic regression analyses revealed that BmI ≥25 kg/m2was associated with a significant higher mor tality [odds ratio(OR)=15.8; 95% confidence interval(CI):1.1-227; P=0.043]. the area under the ROC curve(AUC) for the combination of PF score and BmI ≥25 kg/m2(AUC=0.881;95% CI:0.809-0.952) was higher than that for the PF score alone(AUC=0.820; 95% CI:0.713-0.927)(P=0.034).CONCLUSIONS:the negative impact of a high BmI on the prognosis of AP was confirmed in a Japanese population Including BmI ≥25 kg/m2 as an additional parameter to PF score enhanced the predictive value of the PF score for AP-related mortality.

关键词： acute pancreatitis obesity body mass index severity criteria prognostic factor score

DESIGN OF LIGHt-DIFFUSING SKYLIGHtS BASED ON OPtICAL PROPERtIES-EStImAtION AND mEASUREmENt OF LIGHtING QUALItY AND ENERGY SAVINGS-

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DESIGN OF LIGHT-DIFFUSING SKYLIGHTS BASED ON OPTICAL PROPERT...

the modulation of co-stimulatory molecules by circulating exosomes in primary biliary cirrhosis

Lighting Quality & Energy Efficiency

作者： Suzuki,t. Kato,t. Ono,m. toyama,t. Koga,Y. Nishimura,S. Sasaki t. homma,A. Shizuoka Industrial Institute of Shizuoka Prefecture ShizuokaShizuokaJAPAN. Sky Planning Inc. HamamatsuShizuokaJAPAN. Faculty of Human-Environment Studies Kyushu UniversityFukuokaFukuokaJAPAN. toshiba Lighting & technology Corporation YokosukaKanagawaJAPAN. ItO ARCHItECtS & ENGINEERS INC. Chiyoda-kuTokyoJAPAN.

＜正＞Objective: to reduce the amount of electricity used for lighting with an appropriate illumination environment using light-diffusing skylights,we endeavored to establish design methods to achieve the required uniform *** that purpose,we derived luminous intensity distributions of skylights under the CIE standard clear sky by an optical simulation based on the optical properties of the

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Cellular & molecular Immunology 2017年第3期14卷 276-284页

作者： takashi tomiyama Guo-Xiang Yang ming Zhao Weici Zhang Hajime tanaka Jing Wang Patrick SC Leung Kazuiclli okazaki Xiao-Song He Qianjin Lu Ross L Coppel Christopher L Bowlus m Eric Gershwin Division of Rheumatology Allergy and Clinical Immunology University of California at Davis Davis CA 95616 USA third Department of Internal medicine Division of Gastroenterology and Hepatology Kansai Medical University Osaka 573-1191 Japan Hunan Key Laboratory of medical Epigenomics Department of Dermatology The Second Xiangya Hospital Central South University Changsha Hunan 410011 People's Republic of China Department of Gastroenterology and metabolism Nagoya City University Graduate School of Medical Sciences Nagoya 467-8601 Japan Department of microbiology Monash University Melbourne Australia Division of Gastroenterology and Hepatology University of California at Davis School of Medicine. Sacramento. CA 95817. USA

Exosomes are nanoparticles of endocytic origin, secreted by a myriad of cell populations that are attracting increased attention by virtue of their ability to modulate cell-to-cell communications. they are also attracting attention in a variety of immunological issues, including autoimmunity and, in particular, their ability to regulate cytokine and chemokine activation. Primary biliary cirrhosis （PBC） is considered a model autoimmune disease, which has a highly focused cytotoxic response against biliary epithelial cells. We have isolated exosomes from plasma from 29 patients with PBC and 30 healthy controls （HCs）, and studied the effect of these exosomes on co-stimulatory molecule expression and cytokine production in mononuclear cell populations using an ex vivo system. We also identified the microRNA （miRNA） populations in PBC compared to HC exosomes. We report herein that although exosomes do not change cytokine production, they do significantly alter co-stimulatory molecule expression on antigen-presenting populations. Further, we demonstrated that CD86 up-regulated expression on CD14＋ monocytes, whereas CD40 up-regulated on CD11c＋ dendritic cells by exosomes from patients with PBC. In addition, there were differences of miRNA expression of circulating exosomes in patients with PBC. these data have significant importance based on observations that co-stimulatory molecules play a differential role in the regulation of t-cell activation. Our observation indicated that aberrant exosomes from PBC selectively induce expression of co-stimulatory molecules in different subset of antigen-presenting cells. these alterations may involve in pathogenesis of autoimmune liver disease.

关键词： autoimmunity exosome microRNA primary biliary cirrhosis

A Newly Developed Non-destructive tritium measurement technique and Its Application to a V-4Cr-4ti Alloy

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Southwestern Institute of Physics Annual Report 2006年第1期 154-155页

作者： LIU Xiang CHEN Xue homma H. Hatano Y. matsuyama m. 不详 Sichuan General Fire Brigade Chengdu 610041 China Hydrogen Isotope Research Center Toyama University Gofuku 3190 Toyama 930-8555 Japan

Development of a High-Intensity Neutron monochromator

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Development of a High-Intensity Neutron Monochromator