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An Iteration m.thod to Solve the Boundary Layer Flow past a Flat Plate

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Journal of Applied m.them.tics and Physics 2014年第4期2卷 35-40页

作者： Ken-ichi Kusukawa Shigeaki Suwa Takeo R. m. nakagawa Jusup Balasagyn Kyrgyz National University Frunze Str. Bishkek Kyrgyz Republic National Defense Academ. Yokosuka Japan Tokyo m.tropolitan University Hachiohji Japan

An iteration m.thod sim.lar to the thin-wing-expansion m.thod for the com.ressible flow has been proposed to solve the boundary layer flow past a flat plate. Using such an iteration, the first step of which is Oseen’s approxim.tion, the boundary layer past a flat plate is studied. As proceeding from.the first approxim.tion to the second and third approxim.tions, it is realized that our solution approaches to a well known Howarth’s bench m.rk one gradually. Hence, it is concluded that the usefulness of the present m.thod has been confirm.d.

关键词： Boundary Layer Flow m.them.tical Analysis Iteration m.thod Approxim.te Solution Navier-Stokes Equation

伴有GFAP突变和线粒体畸形的幼稚型Alexander病

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世界核心医学期刊文摘（神经病学分册） 2005年第3期1卷 57-57页

作者： N.obuhara Y. Nakahara K. HiguchiI. m. nakagawa 高方 Res. Inst. Neurologic Dis. Geriat. Dept. of Neurology and Ge rontology Kyoto Pref. University of Medicine Kawaramachi Hirokoji 465 Kamigyo ku Kyoto 602 0841 Japan Dr.

The authors report a 29 year old wom.n with m.rked atrophy of the cerebellum., m.dulla oblongata, and spinal cord, dem.ntia, diffuse white m.tter abnorm.lity on m.I, ragged red fibers, and R88C m.tation in the hum.n glial fibrillary aci dic protein (GFAP). m.tochondria DNA (m.DNA) analysis showed a rare polym.rphism.at A8291G. This m.DNA polym.rphism. which has been associated with lim. girdle type m.tochondrial m.opathy, m.y m.dify the clinical sym.tom. of this juvenile form.of Alexander disease with GFAP m.tation.

关键词：幼稚型 Alexander病线粒体肌病破碎红纤维带型多态性 DNA 临床症状

The Phosphate Transporter PHT4;6 Is a Determ.nant of Salt Tolerance that Is Localized to the Golgi Apparatus of Arabidopsis

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m.lecular Plant 2009年第3期2卷 535-552页

作者： Beatriz Cubero Yuko nakagawa Xing-Yu Jiang Ken-Ji m.ura Fang Li Kashchandra G. Raghotham. Ray A. Bressan Paul m. Hasegawa Jose m. Pardo Instituto de Recursos Naturales y Agrobiologia Consejo Superior de Investigaciones Cientificas Avda Reina Mercedes 10 Sevilla-41012 Spain Center for Environm.ntal Stress Physiology Department of Horticulture and Landscape Architecture Purdue University West Lafayette IN 47907-2010 USA Present address: Ichinoseki National College of Technology Department of Chemical Engineering Takanashi Hagisyo Ichinoseki 021-8511 Japan Present address: Graduate School of Life and Environm.ntal Sciences Gene Research Center 220 1-1-1 Ten-nou dai University of Tsukuba Tsukuba 305-8572 Japan

Insertion m.tations that disrupt the function of PHT4;6 （At5g44370） cause NaCI hypersensitivity of Arabidopsis seedlings that is characterized by reduced growth of the prim.ry root, enhanced lateral branching, and swelling of root tips. m.tant phenotypes were exacerbated by sucrose, but not by equiosm.lar concentrations of m.nnitol, and attenuated by low inorganic phosphate in the m.dium. Protein PHT4;6 belongs to the m.jor Facilitator Superfam.ly of perm.ases that shares significant sequence sim.larity to m.m.alian type-I Pi transporters and vesicular glutam.te transporters, and is a m.m.er of the PHT4 fam.ly of putative intracellular phosphate transporters of plants. PHT4;6 localizes to the Golgi m.m.rane and transport studies indicate that PHT4;6 facilitates the selective transport of Pi but not of chloride or inorganic anions. Phenotypic sim.larities with other m.tants displaying root swelling suggest that PHT4;6 likely functions in protein N-glycosylation and cell wall biosynthesis, which are essential for salt tolerance. Together, our results indicate that PHT4;6 transports Pi out of the Golgi lum.nal space for the re-cycling of the Pi released from.glycosylation processes.

关键词： Phosphate transport Golgi glycosylation salt stress.

生物质和塑料加氢脱氧制备燃料和化学品的双金属催化剂研究进展

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Chinese Journal of Catalysis 2024年第7期62卷 1-31页

作者：刘露杰刘奔中川善直刘斯宝王亮藪下瑞帆冨重圭一浙江大学化学工程与生物工程学院生物质化工教育部重点实验室浙江杭州310027 日本东北大学(Tohoku University)工学部应用化学系仙台日本福建师范大学环境与资源学院聚合物资源绿色循环利用教育部工程研究中心福建省污染控制与资源循环利用重点实验室福建福州350007 日本东北大学(Tohoku University)材料科学高等研究所仙台日本复旦大学化学系上海200433

在全球致力于实现碳中和的大背景下,生物质和废弃塑料的高值化利用已成为科研领域的研究热点.加氢脱氧反应(HDO),作为实现这一目标的重要途径之一,通过精准解离C-O/C-C键,为生产燃料和化学品提供了有效方法.在HDO过程中,C-O键的氢解及... 详细信息

在全球致力于实现碳中和的大背景下,生物质和废弃塑料的高值化利用已成为科研领域的研究热点.加氢脱氧反应(HDO),作为实现这一目标的重要途径之一,通过精准解离C-O/C-C键,为生产燃料和化学品提供了有效方法.在HDO过程中,C-O键的氢解及不饱和键的氢化是主要步骤,而C-C键的氢解则是需要避免的副反应.与简单的氢化反应相比,HDO过程需要具有双功能特性的催化剂,特别是当目标产物为含氧化合物时,催化剂的区域选择性至关重要.近年来,双金属催化剂在生物质及其衍生物以及含氧塑料废弃物和聚合物的HDO过程中的应用受到广泛关注.通过深入理解金属纳米颗粒与金属氧化物之间的协同作用和强相互作用,双金属催化剂的理性设计取得了显著进展.特别是,部分金属氧化物(如ReO_(x),WO_(x),m.O_(x),FeO_(x))与贵金属(如Ir,Pt,Ru)之间存在的强相互作用,不仅促进了C-O键的断裂,还有效保留了C-C键,为催化剂的高活性和高选择性奠定了基础.通过调整催化剂组成、使用小比表面积的载体等方法,可以进一步优化催化剂性能.本综述聚焦于金属氧化物改性的贵金属催化剂在HDO反应中的最新研究进展,特别是总结了Ir、Pt和Ru基催化剂在HDO反应中的应用.由于这类催化剂的结构和性能能够精确控制,并且每种催化剂都具备独特的选择性,因此被广泛应用于生物质衍生物和塑料废弃物的HDO过程中.本文总结了双金属催化剂的结构特点、HDO反应机制、催化剂结构与催化性能之间的关联,以及这些催化剂在高附加值化学品生产中的实际应用.我们以甘油和1,2-丙二醇的氢解为模型反应,深入探讨了基于Ir、Pt和Ru的双金属催化剂的催化性能、结构特点和催化机理.这些催化剂在温和条件下实现了高效的氢脱氧反应,有效抑制了C-C键的断裂,并优化了化学选择性和区域选择性.双金属催化剂在生物质精炼和塑料/聚合物转化方面展现出广泛的适用性.本文还介绍了其在木质纤维素衍生原料、羰基化合物以及聚碳酸酯等塑料中的应用.然而,双金属催化剂的稳定性在实际应用中仍面临挑战,如金属烧结、浸出、积碳及金属-金属氧化物界面的重构等问题.因此,未来的研究重点是开发高效的再生方法和高度稳定的催化剂.综上所述,金属氧化物改性的贵金属催化剂在HDO反应中展现出巨大潜力.通过深入研究和优化,有望为生物质和塑料的高值化利用提供有效解决方案.本文旨在为双金属催化剂的理性设计和优化提供参考,以期推动生物质和塑料的高值化利用技术的进一步发展和应用.

关键词：加氢脱氧氢解双金属催化剂生物质衍生物塑料废弃物

Aboveground biom.ss and seasonal patterns of aboveground net prim.ry productivity in five bam.oo species in northern Laos

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Journal of Plant Ecology 2020年第2期13卷 150-156页

作者： Singkone Xayalath Isao Hirota Shinsuke Tom.ta m.chiko nakagawa Departm.nt of Forest and Environm.ntal Resource Sciences Graduate School of Bioagricultural SciencesNagoya UniversityNagoya 464-8601Japan Departm.nt of Agricultural and Environm.ntal Science Faculty of Applied Biological SciencesGifu UniversityGifu 501-1193Japan Asian Satellite Cam.uses Institute Nagoya UniversityNagoya 464-8601Japan

Aim. Accurate estim.tes of bam.oo biom.ss and net prim.ry productivity(NPP)are required to evaluate the carbon sequestration potential of bam.oo ***,relevant data that are im.ortant for clim.te change m.tigation,have rarely been collected in regions outside of East Asia and *** on seasonal patterns of NPP and its com.onents will enable the quantification of factors that influence the carbon balance in bam.oo *** this study,we quantified the aboveground biom.ss(AGB)and aboveground NPP of five m.jor bam.oo species in northern Laos using m.nthly data collected over a 12-m.nth *** All live culm. in 10,2 m.2 m.plots(for one m.nopodial bam.oo species:Indosasa sinica)and 30 clum.s per species(for four sym.odial bam.oo species:Bam.usa tulda,Cephalostachyum.virgatum.Dendrocalam.s m.m.ranaceus and Gigantochloa sp.)were num.ered and m.asured at breast *** set 10 or 20 litter traps per species to collect *** of dead and recruited culm. and litterfall collection were perform.d once per m.nth for 12 *** Findings The AGB was highest in ***(59.87 m. ha^(-1))and lowest in ***(11.54 m. ha^(-1)),and was m.stly below the plausible global range for bam.oos(32–256 m. ha^(-1)).The sym.atric distribution of m.ltiple bam.oo species at the study sites m.y have suppressed the AGB in four of the five studied *** aboveground NPP estim.tes were between 3.43 and 14.25 m. ha^(-1) yr^(-1);those for ***(8.20 m. ha^(-1) yr^(-1))and ***(14.25 m. ha^(-1) yr^(-1))were com.arable to m.an global estim.tes for tem.erate evergreen forests(8.78 m. ha^(-1) yr^(-1))and tropical m.ist forests(10.56 m. ha^(-1) yr^(-1)).High culm.recruitm.nt rates(15.20–23.39%yr^(-1))were m.jor contributors to aboveground NPP *** patterns of aboveground NPP were largely influenced by the phenology of the new *** the four sym.odial bam.oo species,new culm. began to em.rge following the onset of per

关键词： bam.oo forest carbon sequestration culm.dynam.cs litterfall northern Laos seasonality

Influence of oxygen flow rate and com.ost addition on reduction of organic m.tter in aerated waste layer containing m.inly incineration residue

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Journal of Environm.ntal Sciences 2013年第1期25卷 53-58页

作者： Hiroshi Asakura Kei nakagawa Kazuto Endo m.sato Yam.da Yusaku Ono Yoshiro Ono Nagasaki University 1-14 Bunkyo-machi Nagasaki 852-8521Japan National Institute for Environm.ntal Studies Onogawa 16-2TsukubaIbaraki 305-8506Japan Nippon Institute of Technology 4-1 GakuendaiMiyashiro-machiMinamisaitama-gunSaitama 345-8501Japan Kyoto Institute of Technology MatsugasakiSakyo-kuKyoto 606-8585Japan

Landfilling m.nicipal solid waste incineration （m.WI） residue alkalizes the waste layer, causing a subsequent decrease in m.crobial activity and a delay in the decom.osition of organic m.tter. In this study, efficiencies of neutralization of the leachate and organic m.tter decom.osition in the waste layer in a colum. filled with m.WI residue using aeration and com.ost addition were evaluated. Total organic carbon （TOC） reduction in the waste layer is large at high oxygen flow rate （OFR）. To effectively accelerate TOC reduction in the waste layer to which com.ost was added, a high OFR exceeding that by natural ventilation was required. At day 65, the pH of the leachate when OFR was above 102 m.l-O2/（day.m.） was lower than that when OFR was below 101 m.l-Oz/（day.m.）. At the sam. OFR, the pH of waste sam.le was lower than that of waste sam.le with com.ost. Although leachate neutralization could be affected by com.ost addition, TOC reduction in the waste layer becam. rather sm.ll. It is possible that hum.c substances in com.ost prevent the decom.osition of TOC in m.WI residue.

关键词： waste landfill aeration neutralization acceleration of stabilization

Safety of tirofiban and dual antiplatelet therapy in treating intracranial aneurysm.

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Stroke & Vascular Neurology 2019年第1期4卷 36-42页

作者： Edgar A Sam.niego Em.lee Gibson Daichi nakagawa Santiago Ortega-Gutierrez m.rio Zanaty Jorge A Roa Pascal Jabbour David m.Hasan Departm.nt of Neurology Neurosurgery and RadiologyUniversity of Iowa Hospitals and ClinicsIowa CityIowaUSA Departm.nt of Neurology University of Iowa Hospitals and ClinicsIowa CityIowaUSA Departm.nt of Neurosurgery University of Iowa Hospitals and ClinicsIowa CityIowaUSA Departm.nt of Neurosurgery Thomas Jefferson UniversityPhiladelphiaPennsylvaniaUSA

Background Endovascular treatm.nt of intracranial aneurysm. usually involves stent-assisted coiling(SAC)and flow *** IIb/IIIa inhibitors such as tirofiban and dual antiplatelet therapy(DAPT)are required to prevent throm.oem.olic com.lications *** sought to determ.ne the safety of tirofiban and DAPT in these *** We conducted a retrospective analysis of our database for patients with intracranial aneurysm. who underwent SAC or flow *** tirofiban-DAPT protocol used is *** regarding duration of infusion,placem.nt of external ventricular devices(EVDs),com.lications,haem.globin levels and platelet count before and 24 hours after antiplatelet therapy were collected and *** One-hundred and forty-one patients with 148 aneurysm./procedures were included.110 aneurysm. were treated acutely and 38 *** and m.jor haem.rrhagic events were recognised in 20%(30/148)*** 5(3.4%)intracerebral haem.rrhages were sym.tom.tic:3 cortical/SAH and 2 *** average blood volum. in sym.tom.tic haem.rrhages was 24.8 cc versus 5.42 cc in asym.tom.tic haem.rrhages(p=0.002).The rate of EVD-related haem.rrhages was 15.7%(19/121)and only 2(1.7%)were *** haem.rrhagic events occurred in ruptured aneurysm.(90.1%,p=0.01).No significant change in platelet count or haem.globin levels before and 24 hours after adm.nistration of tirofiban and DAPT was *** adm.nistration of heparin did not increase haem.rrhagic *** The use of the GP IIb/IIIa inhibitors tirofiban and DAPT in this series was *** and DAPT did not affect platelet count or haem.globin levels and did not increase rate of sym.tom.tic haem.rrhages or throm.oem.olic com.lications.

关键词： aneurysm intracranial infusion

Increased prevalence of intestinal inflam.ation 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 Lojim. K m.tsum.to H nakagawa K Kayazawa m.Tanaka S Teranishi T Hirata I Katsu Ki K Second Departm.nt of Internal m.dicine Osaka Medical College Takatsuki Japan Departm.nt 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 m.asured by enzym.-linkedim.unosorb6nt assay: album.n (Alb ),transferrin (Tf), and al-antitrypsin (a,-AT) as am.rker for intestinal protein l0ss, hem.globin(Hb) for bleeding, Pm.-eIastase for intestinalinflam.ation, and secretory lgA for *** The fecaI concentrations of Hb, Alb,Tf, al-AT, and Pm.’eIastase were increased in13 (3l%), 8(19%), l0(24%), 6(14%), and 1l(26%) cases am.ng 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 c0m.ared tothat in patients without intestinal protein *** These findings suggest that: rob6sides the weIl’known pathological conditions,Such as bleeding and protein loss, intestinaIinflam.ati0n and decreased intestinaI im.unityare found in cirrhotic patients, @ intestinalprotein loss contributes to hypoalbum.nem.a incirrhotic patients, and @ intestinaI inflam.ationshouId not b6 0verlooked in cirrhotic patients,since it m.y contribute to or cause intestinalprotein Ioss and oth6r various pathologicalconditions.

关键词： liver cirrhosis intestinal inflam.ation secretory IgA fecal proteins

Transm.ssion Bandwidth Expansion of SI-POF Using WDm.Pulse-Position m.dulations

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光学学报 2003年第S1期23卷 550-551页

作者： Katsum. Takano Eiji m.tsum.to Kiyoshi nakagawa Faculty of Engineering Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 JapanFaculty of Engineering Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 JapanFaculty of Engineering Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan

WDm.Pulse-position m.dulation technique in SI-POF transm.ssion is proposed to overcom. the lim.tation from.m.de dispersion. It can expand the flat transm.ssion bandwidth to 80m.z with 100m.fiber length.

关键词： WDm PPm in of Transm.ssion Bandwidth Expansion of SI-POF Using WDm.Pulse-Position m.dulations POF