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Development of magnesium composite alloy by a new method combining B_2O_3 addition and melt stirring

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中国有色金属学会会刊：英文版 2006年第A3期16卷 1870-1874页

作者：卜乐平 s.tanaka M.TsUsHIDA s.ANDO H.TONDA Graduate school of science and Technology Kumamoto University2-39-1 KurokamiKumamoto 860-8555Japan Machinery and Electronic Engineering Institute Inner Mongolia University of AgricultureHohhot 010018China Department of Materials science and Engineering Faculty of EngineeringKumamoto University2-39-1 KurokamiKumamoto 860-8555Japan

For developing high performance magnesium alloys, a new method in combination of B2O3 addition and melt stirring was applied. When 0, 3%, 6% and 12%( mass fraction) B2O3 was added into pure Mg, many twins were produced in each alloy. The average grain size of Mg was about 200μm. In Mg-6Al alloy, the grain size is decreased from 50 to 35μm by B2O3 addition. In Mg-6RE (rare earth) alloys, the grain size is decreased from 35 to 15μm. The grain size of Mg-9Al- 6Ti-3B2O3 alloy is about 5μm. The hardness of pure Mg does not change by B2O3 addition. In Mg-6Al alloy, the hardness is increased by addition of 3% B2O3, however, the hardness of Mg-6RE alloy is decreased by B2O3 addition. Addition of B2O3 into Mg-Al, Mg-RE and Mg-Al-Ti alloys makes the fine grain structures, the hardness of Mg-RE alloy is decreased. This strange behavior may be interpreted with existence of many fine pores in the alloy. The mechanical properties of composite Mg-9Al-6Ti with 3%B2O3 are higher than those of AZ91C. The present results demonstrate the potential of this new method for developing high performance magnesium alloys.

关键词：镁合金金属熔炼有色金属金属加工

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Increased prevalence of intestinal inflammation in patients with liver cirrhosis

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World Journal of Gastroenterology 1999年第5期5卷 391-396页

作者： saitoh O sugi K Lojima K Matsumoto H Nakagawa K Kayazawa M tanaka s Teranishi T Hirata I Katsu Ki K second Department of Internal Medicine Osaka Medical College Takatsuki Japan Department of Gastroenterology Ijinkai Takeda General Hospital Kyoto Japan

AIM To investigate the pathophysiology of the digestive tract in patients with liver *** In 42 cirrhotic patients and 20control subjects, the following fecal proteinswere measured by enzyme-linkedimmunosorb6nt assay: albumin (Alb ),transferrin (Tf), and al-antitrypsin (a,-AT) as amarker for intestinal protein l0ss, hemoglobin(Hb) for bleeding, PMN-eIastase for intestinalinflammation, and secretory lgA for *** The fecaI concentrations of Hb, Alb,Tf, al-AT, and PMN’eIastase were increased in13 (3l%), 8(19%), l0(24%), 6(14%), and 1l(26%) cases among 42 patients, resPectiveIy.F6cal concentration of secretory IgA wasdecreased in 7 (l7%) of 42 patients. However,these fecal concentrations were not related tothe severity or etiology of liver cirrhosis. Theserum Alb level was significantIy decreased inpatients with intestinal protein Ioss c0mpared tothat in patients without intestinal protein *** These findings suggest that: rob6sides the weIl’known pathological conditions,such as bleeding and protein loss, intestinaIinflammati0n and decreased intestinaI immunityare found in cirrhotic patients, @ intestinalprotein loss contributes to hypoalbuminemia incirrhotic patients, and @ intestinaI inflammationshouId not b6 0verlooked in cirrhotic patients,since it may contribute to or cause intestinalprotein Ioss and oth6r various pathologicalconditions.

关键词： liver cirrhosis intestinal inflammation secretory IgA fecal proteins

Application of s-Version FEM to the Mesoscopic Analysis of Wavy shape Memory Fiber/Plaster smart Composite

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Application of S-Version FEM to the Mesoscopic Analysis of W...

在WT—3托卡马克中用电子回旋波启动等离子体电流

The sixth World Congress on Computational Mechanics in Conjunction with the second Asian-Pacific Congress on Computational MechanicsⅠ

作者： s. tanaka H. Okada Y. Watanabe Department of Nano-structure and Advanced Materials Kagoshima University 1-21-40 Korimoto 890-0065 Japan Department of Functional Machinery and Mechanics shinshu University 3-15-1 Tokida Ueda 385-8567

s-version finite element method (s-FEM) [1] is an effective methodology to carry out the mesoscopic analyses of composite materials. This method is based on an element overlay technique and an s-FEM analysis is conducted by using two kinds of finite element models. Overall structure made of composite material is modeled by a coarse global finite element model and the second phase materials such as particles, fibers and voids are represented by finer local finite element models. s-FEM analysis is, then, carried by superposing the local models on the global model. Macroscopic and mesoscopic scale analyses for composite structures can simultaneously be carried out. Furthermore, there is no need to consider connection of nodal points between global and local finite element models and this methodology is applicable to multi-scale modeling of various composite materials with different length scale second phase materials.

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国外核聚变与等离子体应用 1994年第3期 1-8页

作者： tanaka,s 石建

MicroRNA-329-3p inhibits the Wnt/β-catenin pathway and proliferation of osteosarcoma cells by targeting transcription factor 7-like 1

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Oncology Research 2024年第3期32卷 463-476页

作者： Hur sUN MAsANORI KAWANO TATsUYA IWAsAKI ICHRO ITONAGA YUTA KUBOTA HROsHI TsUMURA KAZUHRO tanaka Department of Orthopaedic surgery Faculty of MedicineOita UniversityOita879-5503Japan

An important factor in the emergence and progre sion of osteosarcoma(Os)is the dysregulated expression of microRNAs(miRNAs).Transcription factor 7-like 1(TCF7LI),a member of the T cell factor/lymphoid enhancer factor(TCF/LEF)transcription factor family,interacts with the Wnt signaling pathway regulator β-catenin and acts as a DNA-specific binding *** study sought to elucidate the impact of the interaction between miR 3293p and TCF7L1 *** growth and apoptosis of Os and analyze the regulatory expression relationship between miRNA and mRNA in osteosarcoma cells using a variety of ***329-3p was significantly downregulated,while TCF7L1 was considerably up-regulated in all examined Os cell ***,a clinical comparison study was performed using the TCGA ***,the regulatory relationship between miR-329-3p and TCF7L1 on the proliferation and apoptosis of Os cells was verified through in vitro and in vivo *** miR 329-3p was transfected into the Os cell line,the expression of TCF7L1 decreased,the proliferation of Os cells was inhibited,the cytoskeleton disintegrated,and the nucleus condensed to fom apoptotic *** expression of proteins that indicate apoptosis increased *** cell cycle was arrested in the G0/G1 phase,and the G1/s transition was *** introduction of miR 3293p also inhibited downstream Cyclin D1 of the Wnt *** experiments indicated that the overexpression of miR-329-3p signi ficanly inhibited the growth of Os xenografts in nude mice,and the expression of TCF7L1 and C-Myc in tumor tssues *** 329-3p was significantly reduced in Os cells and played a suppressive role in tumorigenesis and proliferation by targeting TCF7L1 both in vitro and in *** cell cycle arrest and pathway inhibition were observed upon the regulation of TCF7LI by miR *** these results,it can be inferred that miR.3293p exerts anticancer efects in osteosarcom

关键词： MiR-329-3p TCF7L1 Wnt/β-catenin pathway Osteosarcoma Proliferation

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掺稀土的Y2O3粉末层的场致发光

发光学报 1975年第6期 14-16页

作者： s.tanaka,H.Kobayashi 日本鸟取大学电子学系日本鸟取大学电子学系

通过选择适当的稀土离子掺入Zns中,可以获得各种可见的场致发光,这也提供了获得我们感兴趣的彩色显示器的可能性。但是,由于稀土离子在Zns晶格里的溶解度很低,所以还不能得到高效率的稀土掺杂的Zns场致发光。

关键词：场致发光 Zns 电致发光 Y2O3 稀土粉末

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活化的LaNi5吸收或释放氢的慢速阶段

稀土与铌 1979年第1期 51-53页

作者： s.tanaka 徐有光

作者近来已提出,未活化的 LaNi5（块状的）在最初溶解度范围内的（忄万）速氢吸收阶段,是穿过样品体积的氢扩散。因为 LaNi5及其它金属间化合物的活化状态对于实际的能量（氢）的贮存是有较大的意义,所以对于在饱和氢的金属间相和氢化... 详细信息

作者近来已提出,未活化的 LaNi5（块状的）在最初溶解度范围内的（忄万）速氢吸收阶段,是穿过样品体积的氢扩散。因为 LaNi5及其它金属间化合物的活化状态对于实际的能量（氢）的贮存是有较大的意义,所以对于在饱和氢的金属间相和氢化物相共存的两相区内的活化的LaNi5,测定它能否获得同样

关键词：反应溶解度化学吸附吸着溶解系数 LaNi5

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回顾1982年,展望1983年的纺织贸易

国外纺织技术 1983年第16期 1-3页

作者： s.tanaka 王青华

经过二十四年之后,纺织品出口转向萧条回顾1982年,日本在贸易方面的最大特点是:由于受同时出现的世界性普遍萧条的直接影响,与历年的记录对比,1982年的进口数量和出口数量都严重地下降,变得越来越不景气。根据一月至十月出口的结关记录... 详细信息

经过二十四年之后,纺织品出口转向萧条回顾1982年,日本在贸易方面的最大特点是:由于受同时出现的世界性普遍萧条的直接影响,与历年的记录对比,1982年的进口数量和出口数量都严重地下降,变得越来越不景气。根据一月至十月出口的结关记录,进出口数值均比前几年减少7～8％,到82

关键词：进口额日本原材料中华人民共和国纺织贸易制成品进出口本位币美元出口额

北京清华园采暖前与采暖期PM_(10)中含碳组分的理化特征

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中国环境监测 2006年第4期22卷 52-56页

作者：贾英韬贺克斌马永亮杨复沫段凤魁雷宇 s.tanaka T.Okuda 清华大学环境科学与工程系北京100084 庆应大学化学系

采用美国rp公司生产的series5400大气颗粒物碳质组分监测仪对清华园PM10中的碳质组分进行了连续在线监测（2002年9月-11月）。结合PM2.5中碳质组分浓度、PM10的浓度和气象数据，分析了碳质组分的污染特征。结果表明，采样期间清华园大气... 详细信息

采用美国rp公司生产的series5400大气颗粒物碳质组分监测仪对清华园PM10中的碳质组分进行了连续在线监测（2002年9月-11月）。结合PM2.5中碳质组分浓度、PM10的浓度和气象数据，分析了碳质组分的污染特征。结果表明，采样期间清华园大气PM10中有机碳（OC）、元素碳（EC）的日平均质量浓度分别在4．07～65．81μg／m^3、0．96～26．14μg／m^3之间变化，平均值分别为20．8±12．1和7．0±5．1μg／m^3。OC在总碳（TC）中占有很大比例，OC／TC平均值为75．84％；TC在PM10中的含量平均为25．0％。本文对9—10月份（秋季）和11月份（初冬）OC、EC的相关性分别进行了分析，结果表明OC、EC之间具有良好的相关性，9月份和10月份相关性系数（R^2）为0．83；11月份为0．90。二次生成的OC（OCsec）浓度估算结果表明，9、10月份OCsec在OC中的比例（60．7％）比11月份（38．5％）大。碳质组分主要集中在细颗粒物中，PM10中的OC有70．3％存在于细颗粒物PM2.5中，TC则有58．6％存在于PM2.5中。

关键词：有机碳元素碳相关性气象条件 PM10 PM2.5

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