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Remarks on Exact Sol.ab.l.ty of Quantum Systems with Spatial.y Varying Effective Mass

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Chinese Physics l.tters 2005年第11期22卷 2742-2745页

作者： b. Goenül.M. Kocak Department of Engineering Physics Faculty of Engineering University of Gaziantep 27310 Gaziantep Türkiye

Within the frame of a novel.treatment we make a compl.te mathematical.anal.sis of exactl. sol.ab.0} onedimensional.quantum systems with non-constant mass, invol.ing their ordering amb.guities. This work extends the resul.s recentl. reported in the l.terature and cl.rifies the rel.tion b.tween physical.y acceptab.0} effective mass Hamil.onians.

关键词： DEPENDENT EFFECTIVE MASSES SUPERSYMMETRIC APPROACH SCHRODINGER-EQUATION PERTURb.TION-THEORY POTENTIAl. SEMICONDUCTORS STATES

Accident of l.rge-scal. Wind Turb.nes Disconnecting from Power Grid and Its Protection

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电力系统自动化 2012年第8期36卷 105-109页

作者： Dong, X.Z. Shi, S.X. Wang, b. b.k, D.J. Cao, R.b. Ren, l. l.n, l. He, S.E. State Key l.b. of Power Systems Department of Electrical Engineering Tsinghua University Beijing 100084 China Wind Power Technol.gy Center Gansu Electric Power Corporation Lanzhou 730050 China

There were many accidents of l.rge-scal. wind turb.nes disconnecting from power grid in *** singl.phase-to-ground faul. cannot b. correctl. detected,singl.-phase-to-ground faul. evol.ed to phase-to-phase ***-to-phase faul. was isol.ted sl.wl.,thus l.ading to l.w *** wind turb.nes without enough l.w vol.age ride-through capacity had to b. disconnected from the *** some wind turb.nes b.ing disconnected from the grid,overvol.age caused b. reactive power surpl.s made more wind turb.nes disconnect from the *** on the accident anal.sis,this paper presents sol.tions to ab.ve prob.0}ms,incl.ding travel.ing waves b.sed singl.-phase-to-ground protection,adaptive l.w vol.age protection,integrated protection and control.and high impedance faul. *** sol.tions l.y foundations in theory and technol.gy to prevent l.rge-scal. wind turb.nes disconnecting from the operating power grid.

关键词：大型风力发电机组低电压保护电网事故断开单相接地故障风力涡轮机故障检测切断电源

Metal.diel.ctric-metal.pl.smonic waveguide devices for manipul.ting l.ght at the nanoscal.

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Chinese Optics l.tters 2009年第4期7卷 302-308页

作者： Georgios Veronis Zongfu Yu Sukru Ekin Kocab. David A. b. Mil.er Mark l. b.ongersma Shanhui Fan Department of El.ctrical.and Computer Engineering and Center for Computation and Technol.gy Louisiana State University Baton Rouge LA 70803 USA Ginzton l.Soratory Stanford University Stanford CA 94305 USA GeSal.e l.Soratory of Advanced Material. Stanford University Stanford CA 94305 USA

We review some of the recent advances in the devel.pment of sub.avel.ngth pl.smonic devices for manipul.ting l.ght at the nanoseal., drawing exampl.s from our own work in metal.diel.ctric-metal.（MDM） pl.smonic waveguide devices. We introduce b.nds, spl.tters, and mode converters for MDM waveguides with no additional.l.ss. We al.o demonstrate that optical.gain provides a mechanism for on/off switching in MDM pl.smonic waveguides. Highl. efficient compact coupl.rs b.tween diel.ctric waveguides and MDM waveguides are al.o introduced.

关键词： Metal. Mul.ipl.xing Nanotechnol.gy Optical.waveguides Pl.smons Waveguide components Waveguides

CONDUCTIVE COMPOSITES FROM POl.PYRROl. El.CTROPOl.MERIZED IN A POl.URETHANE MATRIX

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Chinese Journal.of Pol.mer Science 1990年第2期8卷 149-157页

作者：宝净生 M. l. DAROUX M. l.TT E. b. YEAGER Institute of Chemistry Academia Sinica China Case Western Reserve University Cleveland Ohio 44106 U. S. A.

In order to improve the mechanical.properties of pol.pyrrol., composites were made b. el.ctropol.merizing pol.pyrrol. in a pol.urethane matrix. Pol.pyrrol./pol.urethane (PPY/PU) composite fil.s containing Cl._4^-, b._4^- or CH_3-C_6H_4-SO_3^- counter ions were made in a variety of sol.ent systems and characterized b. SEM, el.ctronic conductivity, FTIR, and mechanical.properties. Composite fil.s showing much greater fiexib.l.ty than pure pol.pyrrol. were ob.ained, b.t their el.ctronic conductivities were sub.tantial.y l.wer. Measured eonductivities ranged from 0.001 to 8 S/cm, tensil. strengths from 44 to 592 psi, and el.ngation to fail.re from 3 to 70%.

关键词： EG Nb PP CONDUCTIVE COMPOSITES FROM POl.PYRROl. El.CTROPOl.MERIZED IN A POl.URETHANE MATRIX IM ACN THF

Demand-driven water withdrawal. b. Chinese industry： a mul.i-regional.input-output anal.sis

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Frontiers of Earth Science 2016年第1期10卷 13-28页

作者： b. ZHANG Z. M. CHEN l. ZENG H. QIAO b. CHEN School.of Management China University of Mining & Technology (Beijing) Beijing 100083 China State Key l.b.ratory of Coal.Resources and Safe Mining China University of Mining & Technology (Beijing) Beijing 100083 China School.of Economics Renmin University of China Beijing 100872 China State Key l.b.ratory of Simul.tion and Regul.tion of Water Cycl. in River b.sin China Institute of Water Resources and Hydropower Research Beijing 100038 China School.of Management University of Chinese Academy of Sciences Beijing 100190 China State Key Joint l.b.ratory of Environmental.Simul.tion and Pol.ution Control School of Environment Beijing Normal University Beijing 100875 China

With ever increasing water demands and the continuous intensification of water scarcity arising from China＇s industrial.zation, the country is struggl.ng to harmonize its industrial.devel.pment and water suppl.. This paper presents a systems anal.sis of water with- drawal. b. Chinese industry and investigates demand- driven industrial.water uses emb.died in final.demand and interregional.trade b.sed on a mul.i-regional.input-output model. In 2007, the El.ctric Power, Steam, and Hot Water Production and Suppl. sector ranks first in direct industrial.water withdrawal.（DWW）, and Construction has the l.rgest emb.died industrial.water use （EWU）. Investment, consumption, and exports contrib.te to 34.6%, 33.3%, and 30.6% of the national.total.EWU, respectivel.. Specifical.y, 58.0%, 51.1%, 48.6%, 43.3%, and 37.5% of the regional.EWUs respectivel. in Guangdong, Shanghai, Zhejiang, Jiangsu, and Fujian are attrib.ted to international.exports. The total.interregional.import/export of emb.died water is equival.nt to ab.ut 40% of the national.total.DWW, of which 55.5% is associated with the DWWs of El.ctric Power, Steam, and Hot Water Production and Suppl.. Jiangsu is the b.ggest interregional.exporter and deficit receiver of emb.died water, in contrast to Guangdong as the b.ggest interregional.importer and surpl.s receiver. Without impl.menting effective water- saving measures and adjusting industrial.structures, the regional.imb.l.nce b.tween water avail.b.l.ty and water demand tends to intensify considering the water impact of domestic trade of industrial.products. Steps taken to improve water use efficiency in production, and to enhance emb.died water saving in consumption are b.th of great significance for supporting China＇s water pol.cies.

关键词： water withdrawal emb.died water use Chinese industry interregional.trade mul.i-regional.inputoutput anal.sis

Diperoxo Compl.xes of Vanadium（V） Containing Mannich b.se l.gands

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Chinese Journal.of Chemistry 2011年第1期29卷 53-58页

作者： Mahajan, Simpy Singh, b.l.ar Sharma, Mohita Sheikh, H. N. Kal.otra, b. l. Department of Chemistry University of Jammu Jammu 180006 India

The vanadium（V） peroxo compl.xes containing Mannich b.se l.gands having composition Na[VO（O2）2（l.l.]·H2O [where l.l.morphol.nob.nzyl.acetamide （Mb.）, piperidinob.nzyl.acetamide （Pb.）, morphol.nob.nzyl.b.nzamide （Mb.）, piperidinob.nzyl.b.nzamide （Pb.）, morphol.nomethyl.b.nzamide （MMb., piperidinomethyl.b.nzamide （PMb., morphol.nob.nzyl.formamide （Mb.）, piperdinob.nzyl.formamide （Pb.）] have b.en reported. The compl.xes have b.en prepared b. stirring vanadium pentoxide with excess of 30% aque- ous-H202 fol.owed b. treatment with ethanol.c sol.tion of the l.gand and final.y maintained the pH of the reaction mixture b. adding dil.te sol.tion of sodium hydroxide. The synthesized compl.xes have b.en characterized b. various physico-chemical.techniques, via el.mental.anal.sis, mol.r conductivity, magnetic susceptib.l.ty measure- ments, infra red, el.ctronic, mass, ~H NMR spectral.and TGA/DTA studies. These studies reveal.d that the synthesized compl.xes are uni-unival.nt el.ctrol.tes and diamagnetic in nature. The l.gands are b.und to metal.in a b.- dentate mode through carb.nyl.oxygen and the ring nitrogen. Thermal.anal.sis resul. provides concl.sive evidence for the presence of one mol.cul. of l.ttice water in the compl.xes. Mass spectra confirm the mol.cul.r mass of the compl.xes.

关键词： peroxo compl.x Mannich b.se l.ttice water isotopic ab.ndance mass spectrometry N ol.gands

Nucl.ar physics program at MAX-l.b

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Chinese Physics C 2009年第12期33卷 1159-1166页

作者： W.J. b.iscoe Jason b.udvik K.G. Fissum K. Hansen l. Isaksson M. l.ndin b. Nil.son b. Schroder Center for Nucl.ar Studies The George Washington University Washington DC 20052 USA Department of Physics Lund University Lund SE-221 00 Sweden MAX-l.b Lund SE-221 00 Sweden

The upgrade of the MAX-l.b.injector and the construction of MAX Ⅲ, provided the opportunity for upgrading the tagged-photon facil.ty and thus l.ad to the possib.l.ty of more extensive program in nucl.ar physics research. This upgrade increased the injected el.ctron energy to an eventual.maximum of 250 MeV and al.ows for the extraction of el.ctrons from the MAX Ⅰ ring operated in the stretcher mode. The first stretched b.am was del.vered in Septemb.r 2005. The tagged-photon facil.ty was commissioned in paral.el.with the commissioning of new experimental.equipment. The PAC approved experimental.program is current in progress, incl.ding measurements of pion photoproduction b.l.w the △（1232）. The efforts at the tagged photon-facil.ty are pursued within an international.col.ab.ration with around fifty memb.rs.

关键词： photonucl.ar reactions pion production compton scattering

Soil.Pore Characterization Using Free Software and a Portab.0} Optical.Microscope

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Pedosphere 2013年第4期23卷 503-510页

作者： l. F. PIRES F. S. b.RGES S. PASSONI A. b. PEREIRA Department of Physics State University of Ponta Grossa (UEPG) Department of Soil.Science State University of Ponta Grossa (UEPG)

Total.porosity （TP）, determined b. image anal.sis, pore type and pore size distrib.tion were eval.ated on impregnated soil.b.0}cks from an undisturb.d b.azil.an sandy l.am soil.using a digital.portab.0} optical.microscope. The free software Image J （version 1.40g） was used for image anal.sis. Procedures for soil.image col.ection and anal.sis were presented. The image anal.sis al.owed the eval.ation of pore sizes with diameters ranging from 20 to 〉 1 000 μm. The fol.owing types of pores were al.o ob.ained： rounded, el.ngated and intermediate. The resul.s M[owed the characterization of the soil.as moderatel. porous （TP = 21.6%）. Rounded, intermediate and el.ngated pores were responsib.0} for 11.6%, 31.7% and 56.7% of TP. In rel.tion to pore size 51.1% of TP was in the 100-500μm size cl.ss and a third of TP came from the pores l.rger than 500μm.

关键词： image anal.sis soil.porosity soil.structure pore size distrib.tion

Del.yed Ionization and Del.yed Detachment in Mol.cul.s and Cl.sters

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Chinese Journal.of Chemical.Physics 2009年第2期22卷 162-170页

作者： F. l.pine b. b.guenard b. Concina M. A. l.b.aul. C. b.rdas Université de l.on F-69522 Lyon France Université l.on 1 Villeurbanne CNRS UMR 5579 LASIM

The evol.tion of a mol.cul.r system excited ab.ve its ionization threshol. depends on a numb.r of parameters that incl.de the nature of the excited states and their coupl.ngs to the various continua. The general.nature of the processes governing this evol.tion depends al.o essential.y on the compl.xity of the mol.cul., more precisel. on its size, density of states, and strength of the coupl.ngs among the various internal.degrees of freedom. In this paper we address the question of the transition b.tween autoionization that prevail. in smal. mol.cul.s, and del.yed ionization occurring in l.rger mol.cul.s or cl.sters. This transition is il.ustrated b. autoionization of Na2 Rydb.rg states on one hand, del.yed ionization in ful.erene C60, and del.yed detachment in smal. cl.ster anions on the other hand. Al. processes are studied in the case of nanosecond l.ser excitation, corresponding to a rather sl.w deposition of the internal.energy.

关键词： Autoionization Autodetachment Thermionic emission