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南-岩手工厂的热回收系统

铁合金 1992年第5期23卷 54-58页

作者： K.KOSAKA H.OTA y.tamura 索淑芬日本重化工公司

1979年以来研制的一台硅铁半封闭电炉(32MVA)发电的热回收系统,目前正在日本满意地运行着。本文对这项新技术过去11年的运行给予说明。 (1)产生的电力与电炉负荷相比平均回收率已达19。3%,但目前是20%或更高。 (2)与回收和发电有关的系... 详细信息

1979年以来研制的一台硅铁半封闭电炉(32MVA)发电的热回收系统,目前正在日本满意地运行着。本文对这项新技术过去11年的运行给予说明。 (1)产生的电力与电炉负荷相比平均回收率已达19。3%,但目前是20%或更高。 (2)与回收和发电有关的系统平均作业率是99.3%。

关键词：硅铁半封闭电炉热回收系统发电

低比转速混流式水轮机尾水管空化涡不稳定现象的理论与试验研究

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国外大电机 2022年第1期 58-64页

作者： [日本]y.tamura 郭全宝(译) 赵越(校) 不详

1引言性能良好的水轮机应有很宽的运行范围。特别是低比转速混流式水轮机,由于其比高比转速混流式水轮机流量变化范围更宽,且高水头电站会要求从部分负荷到满负荷都具有高效率和高稳定性。一般情况下,低比速混流式水轮机在最优点时转轮... 详细信息

1引言性能良好的水轮机应有很宽的运行范围。特别是低比转速混流式水轮机,由于其比高比转速混流式水轮机流量变化范围更宽,且高水头电站会要求从部分负荷到满负荷都具有高效率和高稳定性。一般情况下,低比速混流式水轮机在最优点时转轮出口的周向流动分量很小。在远离最优点的工况点,转轮出口周向流动产生的不稳定空化旋涡是造成压力脉动、厂房振动和噪声的原因之一。

关键词：高水头电站空化混流式水轮机不稳定现象压力脉动高比转速部分负荷低比转速

异烟肼耐药突变katGS315T与日本大阪地区MDR-/XDR-TB患病率的相关性

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国际结核病与肺部疾病杂志 2009年第1期4卷 17-22页

作者： H.Ano T.Matsumoto T.Suetake T.Nagai y.tamura I.Takamatsu T.Iwasaki H.Matsuoka S. Sasada S. Tetsumoto I. Tsuyuguchi y. Kusunoki T. Takashima 黄海荣(译) Department of Clinical Research and Development Osaka Prefectural Medical Centre for Respiratory and AllergicDiseases Osaka Research and Development Laboratory NIPRO Corporation Osaka Japan 不详

目的:研究异烟肼耐药的结核分枝杆菌中katGS315T突变的发生情况,并探讨katGS315T突变与耐多药结核病(MDR-TB)患病率之间的相关性。设计:收集了从2001年到2004年间所有到大阪市呼吸与过敏性疾病医学中心就诊的新登记病人的临床分离株1 65... 详细信息

目的:研究异烟肼耐药的结核分枝杆菌中katGS315T突变的发生情况,并探讨katGS315T突变与耐多药结核病(MDR-TB)患病率之间的相关性。设计:收集了从2001年到2004年间所有到大阪市呼吸与过敏性疾病医学中心就诊的新登记病人的临床分离株1 655株,并进行了药物敏感性分析。对1 655株菌株中的1 629株(98.4%)应用插入序列(IS)6110-限制性片段长度多态性(RFLP)法进行了基因分型。对所有耐异烟肼的145个临床分离株,包括耐多药菌株,都进行了katGS315T的突变情况检测。结果:560(34.4%)株临床分离株有相同的RFLP图谱。在145个INH耐药的分离株中,18/48(37.5%)属于有katGS315T突变的RFLP簇,23/97(23.7%)没有发生此突变。在66个耐多药结核病病例中,18/29(62.1%)属于有katGS315T突变的RFLP簇,11/37(29.7%)没有发生此突变。在29例广泛耐药病例(XDR)中,17/21(80.9%)属于有katGS315T突变的RFLP簇,3/8(37.5%)没有发生此突变。结论:发生katGS315T突变的MDR-/XDR-TB分离株中应用IS-RFLP分析获得的成簇率非常高。我们的研究表明katGS315T突变与MDR-TB,尤其是XDR-TB的传播动力学高度相关。

关键词： MDR—TB XDR—TB 异烟肼耐药 katG IS6110-RFLP

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

降低体部CT成像金属弹簧圈伪影:新的单能降低金属伪影算法的效果

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国际医学放射学杂志 2016年第4期 451-451页

作者： M.Kidoh D.Utsunomiya O.Ikeda y.tamura S.Oda y.Funama 戴群瑶 Department of Diagnostic Radiology Faculty of Life Sciences Kumamoto University

摘要目的评价单能降低金属伪影(SEMAR)算法减少体部CT成像中金属弹簧圈伪影的效果。方法对30例[男10例,女20例,平均年龄(67.9±11)岁]体内有金属弹簧圈的病人行CTA检查。非SEMAR影像只进行迭代法重建,而SEMAR影像进行迭代法及SEMAR算法... 详细信息

摘要目的评价单能降低金属伪影(SEMAR)算法减少体部CT成像中金属弹簧圈伪影的效果。方法对30例[男10例,女20例,平均年龄(67.9±11)岁]体内有金属弹簧圈的病人行CTA检查。非SEMAR影像只进行迭代法重建,而SEMAR影像进行迭代法及SEMAR算法重建。比较非SEMAR

关键词：弹簧圈伪影体部算法 CT

Increasing spatial coverage in rough terrain and vegetated areas using InSAR optimized pixel selection:application to Tohoku,Japan

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Geo-Spatial Information Science 2022年第2期25卷 295-311页

作者： Tamer ElGharbawi Masayuki tamura Civil and Earth Resources Engineering Department Kyoto UniversityKyotoJapan

One of the major limitations of using Interferometric Synthetic Aperture Radar(InSAR)in time series analysis is the low-phase coherence associated with rough terrain and vegetated areas,which results in limited spatial coverage in such *** scatterers technique was introduced to overcome this limitation using time-series ***,identifying major scatterers within a pixel requires the single-looked pixels oversampling which can be a demanding process especially with large interferometric stacks and vast study ***,using multilooked temporal coherent pixels was proposed to increase processing efficiency and coverage by utilizing distributed targets,but this technique may exclude pixels with reliable phase returns because of their temporal varying neighboring *** this paper,we propose a technique to identify multilooked temporal stable pixels with reliable phase returns independent of their neighboring *** conduct a simulation analysis to relate the spatial coherence of a pixel with its expected temporal correlation in the time series analysis *** found that a liberal temporal correlation threshold of 0.53 in multilooked pixels stack is equivalent to a spatial coherence threshold of 0.2 when using number of looks of 9,which is considered acceptable in temporal coherent pixels,in terms of phase standard *** these findings to study the 2011 Tohoku earthquake in the northeastern part of Japan resulted in increasing the number of usable pixels and spatial coverage index by nearly 50.4%and 36.8%,respectively,compared to the temporal coherent ***,we propose an approach to integrate GPS observations with InSAR time series analysis,which resulted in deformation maps of the megathrust 2011 Tohoku earthquake with mean RMSE of 11.4 mm and a correlation of 98%in comparison to GPS observations.

关键词： 2011 Tohoku earthquake temporal stable pixels coherence phase noise GPS coverage index

Pediatric kidney transplantation during the COVID-19 pandemic

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World Journal of Clinical Cases 2022年第34期10卷 12494-12499页

作者： Hiroshi tamura Department of Pediatrics Kumamoto UniversityKumamoto 860-8556Japan

A waiting list for non-emergency transplant medical care was recommended in the first half of 2020 due to the coronavirus disease 2019(COVID-19)***,the number of kidney transplants temporarily ***,the waiting list for transplant medical care was lifted in the latter half of 2020 with the establishment of a polymerase chain reaction test system and the spread of infection *** basic stance is to recommend vaccination to posttransplant recipients,recipients,and donors who are scheduled to undergo transplantation,and their families,with the start of vaccine therapy in *** mortality rate of patients undergoing kidney transplants who had COVID-19 is slightly higher than healthy persons,and acute kidney injury was reported to lead to graft ***,pediatric cases of severe disease are rare and without *** transplantation medical care will be continuously provided by implementing infection prevention and treatments based on the latest evidence,promoting donated kidney transplantation,and hoping that pediatric patients with renal failure will grow up healthy,both physically and mentally,and become independent members of society,just like healthy children.

关键词： Kidney transplantation COVID-19 pandemic Children

IMPROVEMENT OF BUBBLE MODEL FOR CAVITATING FLOW SIMULATIONS

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Journal of Hydrodynamics 2009年第1期21卷 41-46页

作者： tamura y. MATSUMOTO y. Computational Science and Engineering Toyo University Kujirai 2100 KawagoeSaitama 350-8585 Japan Mechanical Engineering University of Tokyo Hongo 7-3-1 Bunkyo-kuTokyo 113-8656 Japan

In the present research, a bubble dynamics based model for cavitating flow simulations is extended to higher void fraction region for wider range of applications. The present bubble model is based on the so-called Rayleigh-Plesset equation that calculates a temporal bubble radius with the surrounding liquid pressure and is considered to be valid in an area below a certain void fraction. The solution algorithm is modified so that the Rayleigh-Plesset equation is no more solved once the bubble radius （or void fraction） reaches at a certain value till the liquid pressure recovers above the vapor pressure in order to overcome this problem. This procedure is expected to stabilize the numerical calculation. The results of simple two-dimensional flow field are presented compared with the existing bubble model.

关键词： cavitation model Computational Fluid Dynamics (CFD) cavitation flow Rayleigh-Plesset equation

Protein phase separation of plant nuclear pore complex

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Molecular Plant 2023年第6期16卷 973-974页

作者： Kentaro tamura Masaya Koide School of Food and Nutritional Sciences Department of Environmental and Life SciencesUniversity of ShizuokaShizuoka 422-8526Japan

The nuclear pore complex(NPC)is an evolutionally conserved channel that controls the exchange of macromolecules between the nucleus and *** pores of the NPC form a permeability barrier that allows free permeability of... 详细信息

关键词： separation overcome pores