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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

Development of High Quality Tungsten Coating as Plasma Facing Materials and Components

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southwestern Institute of Physics Annual Report 2002年第1期 57-61页

作者： LIUXiang XUZengyu LIUYong GEChangchun s.tamura N.Yoshida 不详 BeijingscienceandTechnologyUniversity Beijing ResearchInstituteofAppliedMechanics KyushuUniversityJapan

The control of core plasma and impurity level of edge plasma has been greatly improved with the development of controlled fusion technology. Refractory metal tungsten or its alloy was paid more attentions owing to its... 详细信息

关键词：钨镀层等离子体防面材料聚变控制 CVD 热力匹配

一种采用介质谐振器的X波段GaAsFET振荡器

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宇航计测技术 1985年第S1期 226-230页

作者： K.wakino T.NishiKawa s.tamura H.tamura 李自忠

一种采用介质谐振器的高稳定X波段GaAsFET振荡器已经研制出来。这种振荡器的频率稳定度低于±1MHz(-40℃～85℃),其外形尺寸大大地缩小了(20.3mm×12.6mm×8.8mm)。为介质谐振器研制了一种新材料Ba(NiTa)为O3—Ba(ZrZnTa)为O3,这种新型... 详细信息

一种采用介质谐振器的高稳定X波段GaAsFET振荡器已经研制出来。这种振荡器的频率稳定度低于±1MHz(-40℃～85℃),其外形尺寸大大地缩小了(20.3mm×12.6mm×8.8mm)。为介质谐振器研制了一种新材料Ba(NiTa)为O3—Ba(ZrZnTa)为O3,这种新型材料具有非常高的Q值和高的温度稳定性。在10GHz和Tf=0ppm/℃时,谐振器的特性为K=29,Q=10000。

关键词：介质谐振器振荡器电子设备 GaAsFET 波段

sahara’s surface transformation forced an abrupt hydroclimate decline and Neolithic culture transition in northern China

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The Innovation 2024年第1期5卷 70-79页

作者： Yandong Hou Hao Long sumiko Tsukamoto Zhengyao Lu Jie Chen Daniel EIbarra Toru tamura Qiong Zhang Weiyi sun Jingran Zhang Lei Gao Manfred Frechen Ji shen state Key Laboratory of Lake science and Environment Nanjing Institute of Geography and LimnologyChinese Academy of Sciences(NIGLAS)Nanjing 210008China Leibniz Institute for Applied Geophysics(LIAG) Department of Geochronology30655 HannoverGermany Department of Physical Geography and Ecosystem science Lund University22100 LundSweden Key Laboratory of Western China’s Environmental systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China College of Atmospheric sciences Lanzhou UniversityLanzhou 730000China Institute at Brown for Environment and society and Department of Earth Environmentaland Planetary SciencesBrown UniversityProvidenceRI 02912USA Geological survey of Japan National Institute of Advanced Industrial Science and TechnologyTsukubaIbaraki 305-8567Japan Graduate school of Frontier sciences University of TokyoKashiwaChiba 277-8561Japan Department of Physical Geography and Bolin Centre for Climate Research Stockholm University10691 StockholmSweden school of Geography Nanjing Normal UniversityJiangsu Centre for Collaborative Innovation in Geographical Information Resource Development and ApplicationKey Laboratory of Virtual Geographic EnvironmentMinistry of Education of ChinaNanjing 210023China school of Geography and Ocean science Nanjing UniversityNanjing 210023China

The remote forcing from land surface changes in the sahara is hypothesized to play a pivotal role in modulating the intensity of the East Asian summer monsoon(EAsM)through ocean-atmospheric *** modulation has far-reaching consequences,particularly in facilitating societal shifts documented in northern ***,we present a well-dated lake-level record from the Daihai Lake Basin in northern China,providing quantitative assessments of Holocene monsoonal precipitation and the consequent migrations of the northern boundary of the *** reconstruction,informed by a water-and-energy balance model,indicates that annual precipitation reached700 mm during 8–5 ka,followed by a rapid decline to tween 5 and 4 *** shift coherently aligns with a signi550 mm be-ficant300 km northwestward movement of the EAsM northern boundary during the Middle Holocene(MH),in contrast to its current *** findings underscore that these changes cannot be entirely attributed to orbital forcing,as corroborated by simulation *** model simulations deployed in our study suggest that the presence of the Green sahara during the MH significantly strengthened the EAsM and led to a northward shift of the monsoon rainfall ***,the sahara’s reversion to a desert landscape in the late Holocene was accompanied by a corresponding southward retraction of monsoon *** dramatic hydroclimate changes during5–4 ka likely triggered or at least contributed to a shift in Neolithic cultures and societal transformation in northern *** decreasing agricultural productivity,communities transitioned from millet farming to a mixed rainfed agriculture and animal husbandry ***,our findings elucidate not only the variability of the EAsM but also the profound implications of a remote forcing,such as surface transformations of the sahara,on climatic changes and cultural evolution in northern China.

关键词： Holocene monsoon abrupt

Congenital diaphragmatic hernia survival in an English regional ECMO center

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World Journal of Pediatric surgery 2023年第2期6卷 77-84页

作者： Elizabeth O'connor Ryo tamura Therese Hannon sundeep Harigopal Bruce Jaffray Paediatric surgery The Great North Children's HospitalNewcastle upon TyneTyne&WearUK Fetal medicine and obstetrics Royal Victoria InfirmaryNewcastle upon TyneTyne&WearUK Neonatal medicine Royal Victoria InfirmaryNewcastle upon TyneTyne&WearUK

Introduction Congenital diaphragmatic hernia(CDH)remains a cause of neonatal *** aims are to describe contemporary rates of survival and the variables associated with this outcome,contrasting these with our study of two decades earlier and recent *** and methods A retrospective review of all infants diagnosed in a regional center between January 2000 and December 2020 was *** outcome of interest was *** explanatory variables included side of defect,use of complex ventilatory or hemodynamic strategies(inhaled nitric oxide(iNO),high-frequency oscillatory ventilation(HFOV),extracorporeal membrane oxygenation(ECMO),and Prostin),presence of antenatal diagnosis,associated anomalies,birth weight,and *** changes were studied by measuring outcomes in each of four consecutive 63-month *** A total of 225 cases were *** was 60%(134 of 225).Postnatal survival was 68%(134 of 198 liveborn),and postrepair survival was 84%(134 of 159 who survived to repair).Diagnosis was made antenatally in 66%of *** associated with mortality were the need for complex ventilatory strategies(iNO,HFOV,Prostin,and ECMO),antenatal diagnosis,right-sided defects,use of patch repair,associated anomalies,birth weight,and *** has improved from our report of a prior decade and did not vary during the study *** survival has improved despite fewer *** multivariate analysis,the need for complex ventilation was the strongest predictor of death(OR=50,95%CI 13 to 224,pssociated anomalies ceased to be *** survival has improved from our earlier report,despite reduced numbers of *** may be related to increased use of complex ventilatory strategies.

关键词： survival termination sided

IgA nephropathy associated with Crohn's disease

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World Journal of Methodology 2023年第3期13卷 67-78页

作者： Hiroshi tamura Department of Pediatrics Kumamoto UniversityKumamoto 8608556Japan

The relationship between IgA nephropathy(IgAN)and Crohn’s disease was *** is the most common primary glomerulonephritis and one of the leading causes of chronic kidney disease and end-stage renal failure,and up to 50%of cases progressed to end-stage renal disease within 25 years after IgAN ***,specific and effective therapeutic strategies are still *** this review,we discuss the possibility of the mechanism involved in IgAN associated with Crohn’s disease based on the findings of basic and clinical *** the etiology of IgAN associated with Crohn’s disease is not permanent and various factors are thought to be involved,the stabilization of the disease condition of Crohn’s disease is believed to help treat IgAN.

关键词： Crohn’s disease IgA nephropathy Immunological abnormalities Mucosalassociated lymphoid tissue Gut-associated lymphoid tissue Nasopharynx-associated lymphoid tissue

Origin and Evolution of Ultramafic Rocks along the sagaing Fault, Myanmar

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Journal of Earth science 2023年第1期34卷 122-132页

作者： Tomoaki Morishita Hnin Min soe Hla Htay Than Htut Lwin Juan Miguel Guotana Akihiro tamura Tomoyuki Mizukami Khin Zaw 无 Faculty of Geosciences and Civil Engineering Kanazawa UniversityKanazawa920-1192Japan Lamont-Doherty Earth Observatory Columbia UniversityPalisadesNY10964USA Volcanoes and Earth’s Interior Research Center Japan Agency for Marine-Earth Science and Technology2-15 NatsushimaKanagawa237-0061Japan Geology Department University of MandalayMandalay05092Myanmar Geology Department Dagon UniversityNorth Dagon11422Myanmar Taunggoke Degree College TaunggokeTaunggoke Township07161Myanmar Graduate school of Natural science and Technology Kanazawa UniversityKanazawaIshikawa920-1192Japan CODEs ARC Centre of Excellence in Ore Deposits University of TasmaniaTasmania7001Australia

The active sagaing fault in Myanmar defines the boundary between the Indian Plate and the Eurasian Plate and causes seismic damage in the major cities of Myanmar. small bodies of serpentinite occur along the fault. We for the first time investigated the highly sheared serpentinite bodies in the sheinmagar area and Yega Inn area along the sagaing fault. Extensively sheared/brecciated serpentinites and related rocks, such as talc and/or chlorite-bearing rocks contains small rock fragments of serpentinites. serpentine texture and mineral chemistry indicate that the protolith of these serpentinites were mainly harzburgite with minor amounts of dunite, some of which are cut by gabbroic veins. No shape-preferred orientation of the antigorite is present, indicating that the serpentinization was occurred under relatively static conditions. Protolith and serpentine minerals are similar to those of the jadeitite-bearing serpentinites in the north of the sagaing fault(the Jade Mine belt). Chemical variations of spinels in the studied area are within the compositional range of forearc peridotites and those in the mantle section of nearby ophiolites. After the formation of antigorite serpentinite under static conditions, these serpentinites were subsequently, but locally deformed, probably due to the activity of the sagaing fault, resulting in the formation of serpentinite schist/brecciated rock. The presence of the less-deformed antigorite serpentinite in the sheared/brecciated zone indicates the strain localization mainly along the surrounding serpentine-talc(±chlorite) schistose rocks, which is probably formed by the reaction between serpentinite and country rocks. Further studies are needed to better understand whether the distribution of serpentinized peridotites cause variations in the activity of the sagaing fault.

关键词： sagaing fault serpentinite deformation ophiolite

Hot-Dip Coating of Lead-free Aluminum on steel substrates with Ultrasonic Vibration

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Journal of Materials science & Technology 2008年第1期24卷 41-44页

作者： Y. Tsunekawa s. tamura M. Okumiya N.Ishihara Toyota Technological Institute Tempaku Nagoya 468-8511 Japan

Hot-dip coating has been practically employed in manufacturing zinc alloy coated steel ***,it is difficult to coat aluminum alloy on a bulky steel substrate without sufficient preheating,because a rapidly solidified layer containing gas babbles is formed on a substrate surface.A variety of iron-aluminides are also formed at the interface of a steel and aluminum hot-dip coating system,which is the main difficulty in joining of steel with *** vibration was applied to a steel substrate during hot-dip coating of aluminum alloy to control a rapidly solidified layer and a brittle reaction *** dipping of columnar steel substrates into molten aluminum alloy （Al-2.7 mass fraction si-4.6 mass fraction sn） was carried out through the use of a Langevin oscillator with resonant frequency of 19.5 *** application of ultrasonic vibration is quite effective to control a rapidly solidified layer and a surface oxide layer from a substrate surface by the sonocapillary effect based on a cavitation phenomenon,so that the intimate contact is achieved at the beginning of hot-dip *** application of ultrasonic vibration to hot-dipping is effective to control a reaction layer with less than 5 #m in *** impact test exhibits that the good adhesive strength is approved in hot-dipped aluminum coatings with a thin reaction layer of approximately 5μm.

关键词： Ultrasonic vibration Cavitation sono-Capillary effect Hot-dip coating

simulation study on High Energy Cosmic Electron Detection by shower Image

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Chinese Journal of Astronomy and Astrophysics 2007年第6期7卷 839-844页

作者： Rong Xu Jin Chang s. Torii K. Kasahara T. tamura K. Yoshida Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 Graduate school of Chinese Academy of sciences Beijing 100049 National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 Institute of Physics Kanagawa University Yokohama Kanagawa Japan shibaura Institute of Technology Omiya Saitama Japan

Many projects have recently been carried out and proposed for observing high energy electrons since it is realized that cosmic ray electrons are very important when studying the dark matter particles and the acceleration mechanism of cosmic rays. An imaging calorimeter, BETs （Balloon-borne Electron Telescope with scintillator fiber）, has been developed for this purpose. Using pattern analysis of the shower development, the electrons can be selected from those primary cosmic ray proton events with flux heights one-tenth that of the electrons. The Monte-Carlo simulation is indispensable for the instrument design, the signal trigger and the data analysis. We present different shower simulation codes and compare the simulation results with the beam test and the flight data of BETs. We conclude that the code FLUKA2002 gives the most consistent results with the experimental data.

关键词： methods analytical -- Monte-Carlo simulation -- cosmic rays