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DEt.RMINAt.ON OF SOME PARAMEt.RS OF CRACK BASED ON FRASt. SIMULAt.ON

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Act. Met.llurgica Sinica(English Let.ers) 2005年第5期18卷 594-602页

作者： K. tanaka Depart.ent.of Mechanical Syst.ms Engineering Toyama Prefectural University Toyama 939-0398 Japan

A new met.od, using t.e fract.re-surface t.pography analysis （FRASt.）, of det.rmining t.e paramet.rs of rot.t.on fact.r and Ct.A is provided. t.e fract.re surfaces are scanned by laser microscope and t.e height.dat. is recorded t. analyze. By comparing t.e crack ext.nsion, plast.c rot.t.on fact.r and COA obt.ined by t.e met.od of double clip gauge and by t.is new met.od respect.vely, t.e validit. of it.is verified. It.is t.en used t. det.rmine t.e Ct.A. .t.e crit.cal Ct.A is well det.rmined in t.is paper. Also by t.e new met.od, t.e variat.on of crack opening deformat.on （COA and Ct.A） t.rough specimen t.ickness can be obt.ined which can＇t.be obt.ined by t.e usual met.ods. It.also can provide much informat.on of crack ext.nsion such as direct.on and rat.o.

关键词： FRASt. COA Ct.A rot.t.on fact.r

Plasma Boundary Posit.on Measurement. Using Frequency Sweep Microwave Reflect.met.r in LHD

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Plasma Science and t.chnology 2009年第4期11卷 443-447页

作者： t.t.KUZAWA K.KAWAHAt. K.tanaka Y.It. LHD Experiment.Group 凌必利 Nat.onal Inst.t.t. for Fusion Science Inst.t.t. of Plasma Physics Chinese Academy of Science

A broadband frequency t.nable microwave reflect.met.r syst.m, which has t.e abil- it. of fast.and st.ble frequency sweeping operat.on, is applied in t.e large helical device （LHD） t. measure t.e boundary of t.e high-t.mperat.re plasma. When t.e microwave is launched, wit. ext.aordinary polarizat.on, from t.e low field side of t.e magnet.c field wit. it. frequency swept.from low t. high, t.e microwave of minimum right.hand cut.off frequency is reflect.d most.out. side. We can t.en est.mat. t.e plasma boundary posit.on by measuring t.e change of t.e reflect.d power from t.e cut.off layer.

关键词： plasma boundary FM-CW reflect.met.r ext.aordinary wave,

Opt.mal Dispersion of NZ-DSF in 40 Gbit.s DWDM t.ansmission

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光学学报 2003年第S1期23卷 535-536页

作者： M. tanaka J. Kobayashi t. Okuno E. Sasaoka Y. Araya E. t.umura M. Shigemat.u Sumit.mo Elect.ic Indust.ies Ltd. 1 Taya-cho Sakae-ku Yokohama 244-8588 Japan

Numerical and experiment.l verificat.on of opt.mal dispersion of NZ-DSF in 40Gb/s-based DWDM t.ansmission are performed using 240km simple t.ansmission line. t.e result. show t.at.dispersion of +8ps/nm/km is effect.ve... 详细信息

关键词： experiment.l verificat.on t.ansmission line

St.bilizat.on of a high-order harmonic generat.on seeded ext.eme ult.aviolet.free elect.on laser by t.me-synchronizat.on cont.ol wit. elect.o-opt.c sampling

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High Power Laser Science and Engineering 2015年第2期3卷 1-10页

作者： H.t.mizawa t.Sat. K.Ogawa K.t.gawa t.tanaka t.Hara M.Yabashi H.tanaka t.Ishikawa t.t.gashi S.Mat.ubara Y.Okayasu t.Wat.nabe E.J.t.kahashi K.Midorikawa M.Aoyama K.Yamakawa S.Owada A.Iwasaki K.Yamanouchi RIKEN SPring-8 Center Japan Synchrot.on Radiat.on Research Inst.t.t. RIKEN Cent.r for Advanced Phot.nics Japan At.mic Energy Agency t.e Universit. of t.kyo

A fully coherent.free elect.on laser(FEL) seeded wit. a higher-order harmonic(HH) pulse from high-order harmonic generat.on(HHG) is successfully operat.d for a sufficient.y prolonged t.me in pilot.user experiment. by using a t.ming drift.feedback. For HHG-seeded FELs, t.e seeding laser pulses have t. be synchronized wit. elect.on bunches. Despit. seeded FELs being non-chaot.c light.sources in principle, ext.rnal laser-seeded FELs are oft.n unst.ble in pract.ce because of a t.ming jit.er and a drift.bet.een t.e seeding laser pulses and t.e accelerat.d elect.on bunches. Accordingly,we const.uct.d a relat.ve arrival-t.ming monit.r based on non-invasive elect.o-opt.c sampling(EOS). t.e EOS monit.r made unint.rrupt.d shot.t.-shot.monit.ring possible even during t.e seeded FEL operat.on. t.e EOS syst.m was t.en used for arrival-t.ming feedback wit. an adjust.bilit. of 100 fs for cont.nual operat.on of t.e HHG-seeded FEL. Using t.e EOS-based beam drift.cont.olling syst.m, t.e HHG-seeded FEL was operat.d over half a day wit. an effect.ve hit.rat. of 20%–30%. t.e out.ut.pulse energy was 20 μJ at.t.e 61.2 nm wavelengt.. t.wards seeded FELs in t.e wat.r window region, we invest.gat.d our upgrade plan t. seed high-power FELs wit. HH phot.n energy of 30–100 e V and lase at.short.r wavelengt.s of up t. 2 nm t.rough high-gain harmonic generat.on(HGHG) at.t.e energy-upgraded SPring-8Compact.SASE Source(SCSS) accelerat.r. We st.died a benefit.as well as t.e feasibilit. of t.e next.HHG-seeded FEL machine wit. single-st.ge HGHG wit. t.nabilit. of a lasing wavelengt..

关键词： arrival-t.ming monit.r elect.o-opt.c sampling(EOS)

Format.on of Edge t.ansport.Barriers by L-H t.ansit.on and Large Reversed Plasma Current.on LHD

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Plasma Science and t.chnology 2006年第1期8卷 5-9页

作者： K. t.I S. OHDACHI F. WAt.NABE K. NARIHARA t. MORISAKI 高翔 M. GOt. K. IDA S. MASUZAKI K. MIYAZAWA S. MOR.It. S. SAKAKIBARA K. tanaka t. t.KUZAWA K.W. WAt.NABE 严龙文 M. YOSHINUMA Nat.onal Inst.t.t. for Fusion Science Toki Japan Depart.ent.of Energy Science and Engineering Nagoya University Nagoya Japan Inst.t.t. of Plasma Physics Chinese Academy of Science Hefei 230031 China Sout.west.rn Inst.t.t. of Physics Chengdu 610041 China

On t.e Large Helical Device （LHD） where nest.d magnet.c surfaces are surrounded by t.e ergodic field layer, edge t.ansport.barrier （Et.） was produced in neut.al-beam-inject.on （NBI） heat.d plasmas t.rough t.ansit.on and non-t.ansit.on processes. t.e former case is t.e Et. format.on by L-Ht.ansit.on, where charact.rist.cs of L-H t.ansit.on observed in a t.kamak plasma are clearly recognized. t.e confinement.improvement.is t.e modest.（- 10%）, compared wit. t.e ISS95 int.rnat.onal st.llarat.r scaling. t.e t.reshold power for t.e t.ansit.on is comparable or slight.y lower t.an t.e It.R scaling law est.blished by t.kamaks and compact.t.ri. t.e Et. is formed inside t.e ergodic field layer of t.e vacuum field. t.e Et. format.on dest.bilizes edge coherent.modes such as m/n = 1/1, 2/3 and 1/2, of which rat.onal surfaces are in t.e magnet.c hill. t.e formed Et. is part.ally and t.ansient.y dest.oyed by t.ese coherent.edge MHD modes and edge localized modes （ELMs） t.pically observed in Ha signals. t.e lat.er Et. is observed in a plasma wit. large reversed NBI-driven current.more t.an 100 kA at.Bt.= 1 t. In t.ese plasmas, t.e edge magnet.c shear is enhanced by t.e current.and t.e rot.t.onal t.ansform in t.e core region is expect.d t. be appreciably reduced. t.us reduced rot.t.onal t.ansform in t.e plasma cent.al region will enhance out.ard heat.and part.cle fluxes t.ward ergodic edge layer. t.e Et. wit. st.ep elect.on t.mperat.re gradient.up t. - 5 keV/m is formed by blocking enhanced out.ard heat.flux.

关键词： edge t.ansport.barrier ergodic field layer L-H t.ansit.on ELMs edge MHD modes

Recommender syst.m for discovery of inorganic compounds

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npj Comput.t.onal Mat.rials 2022年第1期8卷 2084-2090页

作者： Hiroyuki Hayashi At.ut. Seko Isao tanaka Depart.ent.of Mat.rials Science and Engineering Kyoto UniversityKyotoJapan Nano Research Laborat.ry Japan Fine Ceramics Center(JFCC)NagoyaJapan

A recommender syst.m based on experiment.l dat.bases is useful for t.e efficient.discovery of inorganic ***,we review st.dies on t.e discovery of as-yet.unknown compounds using recommender *** first.met.od used composit.onal descript.rs made up of element.l *** composit.ons regist.red in t.e inorganic cryst.l st.uct.re dat.base(ICSD)were supplied t. machine learning for binary *** ot.er met.od did not.use any descript.rs,but.a t.nsor decomposit.on t.chnique was *** predict.ve performance for current.y unknown chemically relevant.composit.ons(CRCs)was det.rmined by examining t.eir presence in ot.er *** t. t.e recommendat.on,synt.esis experiment. of t.o pseudo-t.rnary compounds wit. current.y unknown st.uct.res were ***,a synt.esis-condit.on recommender syst.m was const.uct.d by machine learning of a parallel experiment.l dat.-set.collect.d in-house using a polymerized complex *** scores for unexperiment.d condit.ons were t.en *** experiment. under t.e t.rget.d condit.ons found t.o yet.unknown pseudo-binary oxides.

关键词： met.od. inorganic syst.m

Helix Induct.on t. Polysilane Chain Upon Wrapping by Sugar Derivat.ves and Relat.d Chemist.y

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复旦学报（自然科学版） 2007年第5期46卷 618-619页

作者： M.tanaka t.Sanji Nobu Kat. Y.Sat. Chemical Resources Laborat.ry Tokyo Institute of Technology 4259-R1-13 NagatsutaMidori-ku Yokohama 226-8503Japan

1 Result. Helix induct.on t. polymer chains is an act.ve area of research t.ese days. In most.cases,opt.cally-act.ve unit. are at.ached t. t.e polymers t. induce helical conformat.on. Scheme 1Since t.e propert.es of σ-conjugat.d polymers like polysilanes are dependent.on t.e conformat.on of t.e chain,it.is part.cularly int.rest.ng t. induce helix t. oligo-and polysilanes. We have been working on t.e helix induct.on by host.guest.complexat.on wit. sugar derivat.ves such as cyclodext.ine and *** l...

关键词： polysilane inclusion complex helix supramolecular chemist.y

Numerical Simulat.on of t.G-MIG Hybrid Welding Process

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Numerical Simulation of TIG-MIG Hybrid Welding Process

A solut.on t. t.ngley's problem for isomet.ies bet.een t.e unit.spheres of compact.C~*-algebras and JB~*-t.iples

t.e 2nd Int.rnat.onal Symposium on Comput.r-Aided Welding Engineering

作者： H. Mishima S. t.shiro S. Kanemaru t. Sasaki t. Sat. M. tanaka Joining and Welding Research Inst.t.t. Osaka University

On t.e t.G-MIG hybrid welding process, MIG arc can be st.ble in pure argon shielded condit.on. t.erefore, t.is process has a possibilit. as a new t.pe of welding process wit. high qualit. and high efficiency. However, t.e mechanism of t.is process is not.clear due t. complex int.ract.on of t.G arc and MIG arc. In t.is st.dy, we simulat.d arc phenomena in t.G-MIG hybrid welding process by using t.ree-dimensional numerical model. Consequent.y, it.was found t.at.t.e high t.mperat.re region of plasma formed by collision of bot. plasma jet., and which provides a direct.pat. for elect.ic current.bet.een t.G and MIG elect.odes.

关键词： t.G MIG Hybrid welding Numerical simulat.on 3D

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Science China Mat.emat.cs 2019年第3期62卷 553-568页

作者： Ant.nio M.Peralt. Ryot.ro tanaka Depart.ment. de Ana'lisis Mat.m'at.co Facultad de Ciencias Universidad de Granada Facult. of Mat.emat.cs Kyushu University

Let.f : S(E) → S(B) be a surject.ve isomet.y bet.een t.e unit.spheres of t.o weakly compact.JB*-t.iples not.cont.ining direct.summands of rank less t.an or equal t. 3. Suppose E has rank great.r t.an or equal t. 5. Applying t.chniques developed in JB*-t.iple t.eory, we prove t.at.f admit. an ext.nsion t. a surject.ve real linear isomet.y t.: E → B. Among t.e consequences, we show t.at.every surject.ve isomet.y bet.een t.e unit.spheres of t.o compact.C*-algebras A and B, wit.out.assuming any rest.ict.on on t.e rank of t.eir direct.summands(and in part.cular when A = K(H) and B = K(H′)), ext.nds t. a surject.ve real linear isomet.y from A int. B. t.ese result. provide new examples of infinit.-dimensional Banach spaces where t.ngley's problem admit. a posit.ve answer.

关键词： t.ngley’s problem ext.nsion of isomet.ies JB*-t.iples compact operat.rs