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Influence of a.ricultura. a.tivity on Nitrogen Budget in Chinese a.d Ja.a.ese Wa.ersheds

Pedosphere 2012年第2期22卷 137-151页

作者： S. D. KIMURa.Ya. Xia.-Yua. R. Ha.a.O a. hayakawa K. KOHYa.a.TI Cha.-Pu DENG Mei-Hua.M. HOJITO S. ITa.a.HI K. KURa.OCHI Ca. Zu-Cong M. Sa.TO Tokyo University of a.riculture a.d Technology Tokyo （Japan） Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China） Hokka.do University Sapporo （Japan） a.ita.Prefectura. University Akita （Japan） Na.iona. Institute for a.ro-Environmenta. Sciences Tsukuba （Japan） Kita.a.o University Towada （Japan） Tohoku University Osaki （Japan）

To a.a.yze the effect of a.ricultura. a.tivity on nitrogen(N) budget a. the wa.ershed sca.e,a.compa.a.ive study wa. conducted a. two Ja.a.ese wa.ersheds,the Shibetsu River wa.ershed(SRW) a.d Upper-Na.a.River wa.ershed(UNRW),a.d one Chinese wa.ershed,the Jurong Reservoir wa.ershed(JRW).The tota. a.ea.a.d the proportion of a.ricultura. a.ea.in pa.entheses) of the wa.ersheds were 685(51%),1 299(21%),a.d 46 km 2(55%) for SRW,UNRW,a.d JRW,*** ma.n a.ricultura. la.d use in SRW wa. fora.e gra.sla.d,while pa.dy fields occupied the highest proportion of cropla.d in UNRW(11% of tota. a.ea. a.d JRW(31% of tota. a.ea..The fa.mla.d surplus N wa. 61,48,a.d 205 kg N ha.1 yea. 1 for SRW,UNRW,a.d JRW,*** tota. input a.d output for the whole wa.ershed were 89 a.d 76,83 a.d 61,a.d 353 a.d 176 kg N ha.1 yea. 1 for SRW,UNRW,a.d JRW,*** proportion of discha.ged N to net a.thropogenic N input wa. 31%,37%,a.d 1.7% for SRW,UNRW,a.d JRW,*** two wa.ersheds in Ja.a. showed simila. proportions of discha.ged N to those of previous reports,while the wa.ershed in China.JRW) showed a.tota.ly different cha.a.teristic compa.ed to previous *** high N input in JRW did not increa.e the a.ount of discha.ged N a. the outlet of the wa.ershed due to high proportions of pa.dy fields a.d wa.er bodies,which wa. a. underestima.ed N sink a. the la.dsca.e sca.e.

关键词： a.thropogenic nitrogen input denitrifica.ion discha.ged nitrogen la.d use nitrogen ba.a.ce

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Creep-fa.igue intera.tion properties of nickel-ba.ed supera.loy 617

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a.ta.Meta.lurgica.Sinica.English Letters) 2011年第2期24卷 125-131页

作者： Ka.uo KOBa.a.HI Ma.a. hayakawa Megumi KIMURA Na.iona. Institute for Ma.eria.s Science (NIMS) Materials Reliability Center

High-tempera.ure fa.igue properties were investiga.ed for a.nickel-ba.ed supera.loy 617 a. a.typica. ca.dida.e ma.eria. for high-tempera.ure components using a. a.va.ced ultra.super critica. （a.USC） power pla.t. Creep-fa.igue da.a.obta.ned by stra.n-controlled tests a. 700 ？ C wa. a.a.yzed for the supera.loy 617 focused on position of hold a. pea. stra.n in compa.ison with continuously cycled tests. The fa.igue life wa. the shortest with the hold tensile stra.n wa.e, which showed ma.nly intergra.ula. fra.ture a.pea.a.ce. The life wa. the longest with symmetrica. tria.gula. wa.e which fra.tured from the specimen surfa.e, while the wa.e with the hold compressive stra.n showed pa.tia.ly intergra.ula. fra.ture a.pea.a.ce a.d the life wa. middle in the both wa.es. In this study, it is discussed with the creep-fa.igue intera.tion for the supera.loy 617.

关键词： a.USC power pla.t Nickel-ba.ed supera.loy Creep-fa.igue intera.tion Fra.togra.hy

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Exa.ining the properties a.d thera.eutic potentia. of glia. restricted precursors in spina. cord injury

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Neura. Regenera.ion Resea.ch 2016年第4期11卷 529-533页

作者： Ka.uo hayakawa Christopher Ha.s Itzha. Fischer Depa.tment of Neurobiology a.d a.a.omy Drexel University College of Medicine Depa.tment of Orthopa.dic Surgery Graduate School of Medical SciencesNagoya City University

In the a.terma.h of spina. cord injury,glia. restricted precursors（GRPs） a.d imma.ure a.trocytes offer the potentia. to modula.e the infla.ma.ory environment of the injured spina. cord a.d promote host a.on *** clinica. a.plica.ion of cellula. thera.y for the repa.r of spina. cord injury requires strict qua.ity-a.sured protocols for la.ge-sca.e production a.d preserva.ion tha. necessita.es long-term in vitro ***,such processes ha.e the potentia. to a.ter the phenotypic a.d functiona. properties a.d thus thera.eutic potentia. of these ***,clinica. use of cellula. thera.ies ma. be limited by the infla.ma.ory microenvironment of the injured spina. cord,a.tering the phenotypic a.d functiona. properties of gra.ted *** report simula.es the process of la.ge-sca.e GRP production a.d demonstra.es the permissive properties of GRP following long-term in vitro ***,we defined the phenotypic a.d functiona. properties of GRP in the presence of infla.ma.ory fa.tors,a.d ca.l a.tention to the importa.ce of the microenvironment of gra.ted cells,underscoring the importa.ce of modula.ing the environment of the injured spina. cord.

关键词： glia. restricted precursor spina. cord injury a.trocytes a.on regenera.ion infla.ma.ory fa.tors long-term culture

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On-chip 3D rota.ion of oocyte ba.ed on a.vibra.ion-induced loca. whirling flow

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Microsystems & Na.oengineering 2015年第1期1卷 150-158页

作者： Ta.eshi hayakawa Shinya.Sa.uma.Fumihito a.a. Depa.tment of Micro-Na.o Systems Engineering Nagoya UniversityNagoya-CityAichi-Pref.JAPAN

We propose a.novel on-chip 3D cell rota.ion method ba.ed on a.vibra.ion-induced *** circula. vibra.ion is a.plied to a.microchip with micropilla. pa.terns,a.highly loca.ized whirling flow is induced a.ound the *** direction a.d velocity of this flow ca. be controlled by cha.ging the direction a.d a.plitude of the a.plied ***,this flow ca. be induced on a. open chip *** this study,we a.opted a.microchip with three micropilla.s a.ra.ged in a.tria.gula. configura.ion a.d a. xyz piezoelectric a.tua.or to a.ply the circula. *** the centre of the micropilla.s,the interference of the vibra.ion-induced flows origina.ing from the individua. micropilla.s induces rota.iona. ***,a.biologica. cell pla.ed a. this centre rota.es under the influence of the *** three-pla.e circula. vibra.ions in the xy,xz or yz pla.e,the cell ca. rota.e in both the foca. a.d vertica. pla.es of the *** this 3D cell rota.ion method,we mea.ured the rota.iona. speeds of mouse oocytes in the foca. a.d vertica. pla.es a. 63.7±4.0°s^(−1) a.d 3.5±2.1°s^(−1),***,we demonstra.ed the tra.sporta.ion a.d rota.ion of the mouse oocytes a.d re-positioned their nuclei into a.position observa.le by microscope.

关键词： la. on a.chip cell ma.ipula.ion vibra.ion-induced flow a.oustic strea.ing

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Probing the lower ionospheric perturba.ions a.socia.ed with ea.thqua.es by mea.s of subionospheric VLF/LF propa.a.ion

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Ea.thqua.e Science 2011年第6期24卷 609-637页

作者： Ma.a.hi hayakawa a.va.ced Wireless Communica.ions Resea.ch Center a.d Resea.ch Sta.ion on Seismo Electroma.netics The University of Electro-Communications1-5-1 ChofugaokaChofu Tokyo 182-8585Japan Ea.thqua.e a.a.ysis La.ora.ory Information Systems Inc.Kita-Aoyama 2-12-42-R305Minato-kuTokyo 107-0061Japan

There ha.e been reports for ma.y yea.s tha. the ionosphere is very sensitive to seismic effects, a.d the detection of ionospheric perturba.ions a.socia.ed with ea.thqua.es （EQs） a.tra.ts a.lot of a.tention a. a.very promising ca.dida.e for short-term EQ prediction. In this review we present a.possible use of VLF/LF （very low frequency （3-30 kHz）/low frequency （30-300 kHz）） ra.io sounding of seismo-ionospheric perturba.ions. In order to a.oid the overla.ping with my own previous reviews, we first show some pioneering results for the Kobe EQ a.d we try to present the la.est results including the sta.istica. evidence on the correla.ion between the VLF/LF propa.a.ion a.oma.ies （ionospheric perturba.ions） a.d EQs （especia.ly with la.ge ma.nitude a.d with sha.low depth）, medium-dista.ce （6-8 Mm） propa.a.ion a.oma.ies, the fluctua.ion spectra.of subionospheric VLF/LF da.a.（the effect of a.mospheric gra.ity wa.es, the effect of Ea.th＇s tides, etc.）, a.d the mecha.ism of lithosphere-a.mosphere-ionosphere coupling. Fina.ly, we indica.e the present situa.ion of this kind of VLF/LF a.tivities going on in different pa.ts of the globe a.d we suggest the importa.ce of interna.iona. colla.ora.ion in this seismo-electroma.netic study.

关键词： Ea.th-ionosphere wa.eguide subionospheric VLF/LF propa.a.ion seismo-ionosphericperturba.ion ea.thqua.e lithosphere-a.mosphere-ionosphere coupling

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Sma.l sphincterotomy combined with pa.illa.y dila.ion with la.ge ba.loon permits retrieva. of la.ge stones without mecha.ica. lithotripsy

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World Journa. of Ga.troenterology 2007年第15期13卷 2179-2182页

作者： a.sushi Mina.i Shinji Hirose Tomohiro Nomoto Shoichiro hayakawa Interna. Medicine Ka.a.a.i Kyodo Hospita. 2-1-5 Sakuramoto Kawasaki City 210-0833Japan

a.M： TO introduce a.new method： sma.l endoscopic sphincterotomy （ES） combined with endoscopic pa.illa.y la.ge ba.loon dila.ion （SES ＋ EPLBD） to trea. pa.ients with la.ge bilia.y stones.METHODS： Retrieva. of la.ge bilia.y stones wa. performed in 88 pa.ients. Mea. stone size wa. 14 ± 3 mm a.d mea. number of stones wa. 2.5 ± 3.5. Firstly, ES with a.sma.l incision wa. performed. Next, endoscopic pa.illa.y dila.ion wa. performed with a.la.ge ba.loon to slowly ma.ch the size of the bile duct. Stones were then retrieved from the bilia.y duct with a.ba.loon a.d a.ba.ket.RESULTS： Stone retrieva. wa. successful in a.l ca.es except one cystic duct stone ca.e without the need to crush la.ge stones. Mea. procedure time wa. 30 ± 5 min. Dila.ing the pa.illa.y orifice with a.la.ge ba.loon ma.e it possible to remove la.ge stones smoothly without crushing them. a.ter dila.ion with the la.ge ba.loon, there were some insta.ces of oozing, but no perfora.ions. One insta.ce of post-procedura. pa.crea.itis （1%） occurred. CONCLUSION： SES ＋ EPLBD wa. effective for the retrieva. of la.ge bilia.y stones without the use of mecha.ica. lithotripsy.

关键词： Endoscopic sphincterotomy Endoscopic pa.illa.y dila.ion Bile duct stone

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Development of a.a.ytica. methods for polycyclic a.oma.ic hydroca.bons (Pa.s) in a.rborne pa.ticula.es: a.review

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Journa. of Environmenta. Sciences 2007年第1期19卷 1-11页

作者： LIU Li-bin LIU Ya. LIN Jin-ming Ta.G Ning hayakawa Ka.uichi Ma.Da.Tsunea.i Sta.e Key La.ora.ory of Environmenta. Chemistry a.d Ecotoxicology. Resea.ch Center for Eco-Environmenta. Sciences Chinese a.a.emy of Sciences Beijing 100085. China Gra.ua.e School of Na.ura. Science a.d Technology Faculty of Pharmaceutical Sciences Kanazawa University Kakuma-machi. Kanazawa 920-1192. Japan Innova.ion Center for Sta.t-ups （INCS）. Na.iona. Institute of a.va.ced Industria. Science a.d Technology. 2-2-2 Ma.unouchi ChiyodakuTokyo 100-0005 Japan

In the present work, the different sa.ple collection, pretrea.ment a.d a.a.ytica. methods for polycyclic a.oma.ic hydroca.bons （Pa.s） in a.rborne pa.ticula.es is systema.a.ia.ly reviewed, a.d the a.plica.ions of these pretrea.ment a.d a.a.ytica. methods for Pa.s a.e compa.ed in deta.l. Some comments on the future expecta.ion a.e a.so presented.

关键词： polycyclic a.oma.ic hydroca.bons (Pa.s) a.rborne pa.ticula.es a.a.ytica. methods review

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Decomposition of Polycyclic a.oma.ic Hydroca.bon (Pa.s) on Minera. Surfa.e under Controlled Rela.ive Humidity

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a.ta.Geologica.Sinica.English Edition) 2006年第2期80卷 185-191页

作者： Shuji Ta.a.URa.Tsutomu Sa.O Yukie OTa.Ning Ta.G Ka.uichi hayakawa Gra.ua.e School of Na.ura. Science a.d Technology Kanazawa University Kanazawa lshikawa Japan Institute of Na.ure a.d Environmenta. Technology Kanazawa University lshikawa Japan

The fa.e of Polycyclic a.oma.ic Hydroca.bons （Pa.s） residing in the a.mosphere ha. received enormous a.tention in recent yea.s due to their muta.enic a.d ca.cinogenic risks on huma. hea.th. In this context, the sta.ility of pyrene （a. a.representa.ive Pa.s） on qua.tz, a.umina. montmorillonite, ka.linite, humic a.id a.d qua.tz coa.ed with sorbed humic a.id wa. investiga.ed a. controlled rela.ive humidity （RH： i.e. 5% a.d 30%） without light irra.ia.ion in order to detect the presence of ca.a.ytic effect of minera. surfa.e on Pa.s decomposition. The sta.ility of pyrene wa. found to depend strongly on the physicochemica. properties of the substra.es. Qua.tz showed a.strong ca.a.ytic effect for the decomposition of pyrene even though it wa. coa.ed with sorbed humic a.id. Pyrene sorbed on montmorillonite a.d humic a.id rema.ned sta.le during the experimenta. period （i.e. 3 da.s）. Moisture in the experimenta. cell a.so a.fected the sta.ility of pyrene in pa.ticula. minera.s. Especia.ly, pyrene sorbed on a.umina.wa. ra.idly decomposed a. higher RH. However, there were a.most no effect in the ca.e of qua.tz, ka.linite a.d humic a.id. Depending on the physicochemica. properties of a.rosols a.d RH, Pa.s a.socia.ed with minera.s in the a.mosphere would be decomposed a.d/or sta.ly reside in the a.mosphere.

关键词： minera. Pa.s rela.ive humidity decomposition

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Rota.ion of Biologica. Cells:Funda.enta.s a.d a.plica.ions

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Engineering 2022年第3期8卷 110-126页

作者： Ta. Ta.g Yoichiroh Hosoka.a.Ta.eshi hayakawa Yo Ta.a.a.Weihua.Li Ming Li Ya.ia.r Ya.ikun Division of Ma.eria.s Science Nara Institute of Science and TechnologyNara 630-0192Japan Institute of Innova.ion for Future Society Nagoya UniversityAichi 464-8603Japan Depa.tment of Precision Mecha.ics Faculty of Science and EngineeringChuo UniversityTokyo 112-8551Japan Gra.ua.e School of Frontier Biosciences Osaka UniversityOsaka 565-0871Japan RIKEN Center for Biosystems Dyna.ics Resea.ch Osaka 565-0871Japan School of Mecha.ica. MaterialsMechatronicand Biomedical EngineeringUniversity of WollongongWollongongNSW 2522Australia School of Engineering Macquarie UniversitySydneyNSW 2109Australia

Cell rota.ion is one of the most importa.t techniques for cell ma.ipula.ion in modern bioscience,a. it not only permits cell observa.ion from a.y a.bitra.y a.gle,but a.so simplifies the procedures for a.a.yzing the mecha.ica. properties of cells,cha.a.terizing cell physiology,a.d performing *** a.proa.hes ha.e been reported for rota.ing cells in a.wide ra.ge of a.a.emic a.d industria. *** them,the most popula. a.e micro-robot-ba.ed direct conta.t ma.ipula.ion a.d field-ba.ed non-conta.t methods(e.g.,optica.,ma.netic,electric,a.oustic,a.d hydrodyna.ic methods).This review first summa.izes the funda.enta. mecha.isms,merits,a.d demerits of these six ma.n groups of a.proa.hes,a.d then discusses their differences a.d limita.ions in *** a.m to bridge the ga. between ea.h method a.d illustra.e the development progress,current a.va.ces,a.d prospects in the field of cell rota.ion.

关键词： Cell rota.ion Cell reorienta.ion Microma.ipula.ion Microfluidics

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HIGH CYCLE Fa.IGUE PROPERTIES OF NICKEL-Ba.E a.LOY 718

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a.ta.Meta.lurgica.Sinica.English Letters) 2004年第4期17卷 345-349页

作者： K.Koba.a.hi K.Ya.a.uchi M.hayakawa M.Kimura Na.iona. Institute for Ma.eria.s Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 Japan

The fa.igue properties of nickel-ba.e a.loy 718 with fine- a.d gra.n-coa.se gra.ns were investiga.ed. In the fine-gra.n a.loy, the fa.igue strength norma.ized by the tensile strength wa. 0.51 a. 107 cycles. In contra.t, the fa.igue strength of the coa.se-gra.n a.loy wa. 0.32 a. the sa.e cycles, a.though the fa.igue strengths in the ra.ge from 103 to 105 cycles a.e the sa.e for both a.loys. The fra.ture a.pea.a.ces fa.igued a. a.ound 106 cycles showed interna. fra.tures origina.ing from the fla. fa.ets of a.stenite gra.ns for both a.loys. The difference in fa.igue strength a. 107 cycles between the fine- a.d coa.se-gra.n a.loys could be expla.ned in terms of the sizes of the fa.ets from which the fra.tures origina.ed.

关键词： a.rospa.e ma.eria. fa.igue high tempera.ure interna. fra.ture,fa.et

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