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Low temperature properti.s of organi.i.organi. Ag/p-CuPc/n-GaAs/Ag photoelectri. sensor

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Sci.nce Chi.a(Technologi.al Sci.nces) 2008年第2期51卷 153-161页

作者： Kh. S. KARi.OV i. QAZi.T. A. KHAN M. i. FEDOROV Physi.al Techni.al i.sti.ute of Academy of Sci.nces Gi. i.sti.ute of Engi.eeri.g Sci.nce and Technology State Techni.al Uni.ersi.y

A thi. organi. fi.m of p-type semi.onducti.g copper phthalocynani.e (CuPc) was deposi.ed by vacuum evaporati.n on an n-type GaAs si.gle-crystal semi.onductor substrate. The fabri.ated Ag/p-CuPc/n-GaAs/Ag sensor was carri.d through an agei.g process to stabi.i.e the parameters. Voltage-current characteri.ti.s and photoelectri.al response of the sensor were i.vesti.ated at a wi.e temperature range of 82 to 350 K. Photoelectri. characteri.ti.s were measured under non-modulated fi.ament-lamp i.lumi.ati.n. i. was observed that such sensor parameters as recti.i.ati.n rati.,threshold voltage,juncti.n,shunt and seri.s resi.tances,open-ci.cui. voltage and short ci.cui. current are temperature-dependent. i. was found that wi.e-range voltage-current characteri.ti.s of the sensor may be de-scri.ed si.i.arly to that of a Schottky barri.r di.de. Usi.g the experi.ental data on voltage-current characteri.ti.s and absorbance of the CuPc fi.ms,the energy-band di.gram of the p-CuPc/n-GaAs heterojuncti.n was developed. i. was shown that data obtai.ed from si.ulati.n of an equi.alent ci.cui. of photoelectri. sensor agreed wi.h experi.ental results.

关键词： organi. solar cell organi.-i.organi. heterojuncti.n temperature dependent i.V characteri.ti.s

Effect of Carbon Properti.s on Melti.g Behavi.r of Mold Fluxes for Conti.uous Casti.g of Steels

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Journal of i.on and Steel Research i.ternati.nal 2006年第2期13卷 22-26页

作者： i. D. Sommervi.le A. McLean Department of Materi.ls Sci.nce and Engi.eeri.g University of Toronto Toronto M5S-3E4 Ontario Canada

Duri.g conti.uous casti.g of steel, the properti.s of mold fluxes strongly affect the casti.g performance, steel quali.y and envi.onment of casti.g operati.n. The hi.h temperature mi.roscopy techni.ue was used to i.vesti.ate the melti.g behavi.ur of mold fluxes, and dri. test method was used to determi.e thei. melti.g rate. The results showed that free carbon i. a domi.ant factor i. governi.g the melti.g behavi.ur of fluxes, and the melti.g rate i. i.creased wi.h i.creasi.g carbon reacti.i.y and decreasi.g carbon content.

关键词： conti.uous casti.g carbon reacti.i.y mold flux flux melti.g rate steel

Multi.ensory mechani.ms of gai. and balance i. Parki.son’s di.ease:an i.tegrati.e revi.w

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Neural Regenerati.n Research 2025年第1期20卷 82-92页

作者： Sti.en Roytman Rebecca Paalanen Gi.li. Carli.Uros Marusi. Prabesh Kanel Teus van Laar Ni.o i.Bohnen Department of Radi.logy University of MichiganAnn ArborMIUSA Department of Neurology University of MichiganAnn ArborMIUSA Morri. K.Udall Center of Excellence for Parki.son’s Di.ease Research University of MichiganAnn ArborMIUSA i.sti.ute for Ki.esi.logy Research Science and Research Centre KoperKoperSlovenia Department of Health Sci.nces Alma Mater Europaea–ECMMariborSlovenia Parki.son’s Foundati.n Research Center of Excellence University of MichiganAnn ArborMIUSA Department of Neurology University of GroningenUniversity Medical Center GroningenGroningenThe Netherlands Neurology Servi.e and GRECC VA Ann Arbor Healthcare SystemAnn ArborMIUSA

Understandi.g the neural underpi.ni.g of human gai. and balance i. one of the most perti.ent challenges for 21st-century translati.nal neurosci.nce due to the profound i.pact that falls and mobi.i.y di.turbances have on our agi.g *** and gai. control does not happen automati.ally,as previ.usly beli.ved,but rather requi.es conti.uous i.volvement of central nervous *** effecti.ely exert control over the body,the brai. must i.tegrate multi.le streams of sensory i.formati.n,i.cludi.g vi.ual,vesti.ular,and somatosensory *** mechani.ms whi.h underpi. the i.tegrati.n of these multi.ensory si.nals are the pri.ci.al topi. of the present *** multi.ensory i.tegrati.n theori.s focus on how fai.ure of cogni.i.e processes thought to be i.volved i. multi.ensory i.tegrati.n leads to falls i. older *** emphasi.,however,has been placed on speci.i. contri.uti.ns of i.di.i.ual sensory modali.i.s to multi.ensory i.tegrati.n processes and cross-modal i.teracti.ns that occur between the sensory modali.i.s i. relati.n to gai. and *** the present work,we revi.w the contri.uti.ns of somatosensory,vi.ual,and vesti.ular modali.i.s,along wi.h thei. multi.ensory i.tersecti.ns to gai. and balance i. older adults and pati.nts wi.h Parki.son’s *** also revi.w evi.ence of vesti.ular contri.uti.ns to multi.ensory temporal bi.di.g wi.dows,previ.usly shown to be hi.hly perti.ent to fall ri.k i. older ***,we relate multi.ensory vesti.ular mechani.ms to potenti.l neural substrates,both at the level of neurobi.logy(concerni.g posi.ron emi.si.n tomography i.agi.g)and at the level of electrophysi.logy(concerni.g electroencephalography).We hope that thi. i.tegrati.e revi.w,drawi.g i.fluence across multi.le subdi.ci.li.es of neurosci.nce,paves the way for novel research di.ecti.ns and therapeuti. neuromodulatory approaches,to i.prove the li.es of older adults and pati.nts wi.h neurodegenerati.e di.eases.

关键词： agi.g balance encephalography functi.nal magneti. resonance i.agi.g gai. multi.ensory i.tegrati.n Parki.son’s di.ease posi.ron emi.si.n tomography somatosensory vesti.ular vi.ual

Li.e after the bi.th of the mi.ochondri.l Na^+/Ca^(2+) exchanger,NCLX

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Sci.nce Chi.a(Li.e Sci.nces) 2015年第1期58卷 59-65页

作者： Ni.A Luli. i. HERSHFi.KEL Mi.hal SEKLER i.rael Department of Physi.logy and Cell Bi.logy Faculty of Health SciencesBen-Gurion University of the Negev

Powered by the mi.ochondri.l membrane potenti.l,Ca2+ permeates the mi.ochondri. vi. a Ca2+ channel termed Ca2+ uni.orter and i. pumped out by a Na+/Ca2+ exchanger,both of whi.h are located on the i.ner mi.ochondri.l *** Ca2+ transi.nts are cri.i.al for metaboli. acti.i.y and regulati.g global Ca2+ *** the other hand,fai.ure to control mi.ochondri.l Ca2+ i. a hallmark of i.chemi. and neurodegenerati.e *** thei. i.portance,i.enti.yi.g the uni.orter and exchanger remai.s elusi.e and thei. i.hi.i.ors are *** revi.w wi.l focus on the mi.ochondri.l exchanger,i.i.i.lly descri.i.g how i. was molecularly i.enti.i.d and li.ked to a novel member of the Na+/Ca2+ exchanger superfami.y termed *** control of NCLX expressi.n provi.es a selecti.e tool to determi.e i.s physi.logi.al role i. a vari.ty of cell *** lymphocytes,NCLX i. essenti.l for refi.li.g the endoplasmi. reti.ulum Ca2+ stores requi.ed for anti.en-dependent *** of NCLX wi.h the store-operated channel i. astrogli. controls Ca2+ i.flux and thereby neuro-transmi.ter release and cell *** refi.li.g of the Ca2+ stores i. the sarcoplasmi. reti.ulum,whi.h i. controlled by NCLX,determi.es the frequency of acti.n potenti.l and Ca2+ transi.nts i. *** i. emergi.g as a hub for i.tegrati.g glucose-dependent Na+ and Ca2+ si.nali.g i. pancreati. β cells,and the speci.i. molecular control of NCLX expressi.n resolved the controversy regardi.g i.s role i. neurons and β *** studi.s on an NCLX knockdown mouse model and i.enti.i.ati.n of human NCLX mutati.ns are expected to determi.e the role of mi.ochondri.l Ca2+ efflux i. organ acti.i.y and whether NCLX i.acti.ati.n i. li.ked to i.chemi. and/or neurodegenerati.e ***-functi.n analysi. and protei. analysi. wi.l i.enti.y the NCLX mode of regulati.n and i.s partners i. the i.ner membrane of the mi.ochondri..

关键词： NCLX MCU mi.ochondri.l Ca^2+ si.nali.g Na^+/Ca^2+ exchanger Na+ si.nali.g

Provenance of Precambri.n Fe- and Al-ri.h Metapeli.es i. the Yeni.ey Ri.ge and Kuznetsk Alatau, Si.eri.: Geochemi.al Si.natures

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Acta Geologi.a Si.i.a(Engli.h Edi.i.n) 2007年第3期81卷 409-423页

作者： i.or i. Li.HANOV Vladi.i. V. REVERDATTO i.sti.ute of Geology and Mi.eralogy Si.eri.n Branch Russian Academy of SciencesPr. Acad. Koptyuga3Novosibirsk630090Russian Federation

Major, trace and rare earth element contents of Fe- and Al-ri.h metapeli.es from the Korda （Yeni.ey Ri.ge） and Amar （Kuznetsk Alatau） formati.ns were determi.ed to exami.e the nature, ori.i. and evoluti.n of thei. protoli.hs. Results i.di.ate that these rocks are the redeposi.ed and metamorphosed products of Precambri.n kaoli.i.i. weatheri.g crusts, whi.e the geochemi.al di.ti.cti.ns between the studi.d metapeli.es are determi.ed by di.ferent weatheri.g condi.i.ns i. the source area and tectoni. setti.gs. The protoli.h of the Korda Formati.n metapeli.es was produced by erosi.n products of the post-Archean grani.oi. rocks, whi.h accumulated under humi. cli.ate condi.i.ns i. shallow-water basi.s along the conti.ental margi.. The geochemi.al characteri.ti.s of the deeper pri.ary deposi.s of the Amar Formati.n suggest that volcanogeni. materi.l of mafi. composi.i.n deri.ed from an i.land-arc envi.onment had a major role i. supplyi.g the erosi.n zone. These results agree wi.h li.hofaci.s data and wi.h the geodynami. reconstructi.n of the evoluti.n of the Yeni.ey Ri.ge and Kuznetsk Alatau duri.g the Mesoproterozoi. and Neoproterozoi., respecti.ely. i. was shown that REEs had li.i.ed mobi.i.y duri.g contact metamorphi.m. The coherent mobi.i.y of REEs duri.g colli.i.nal metamorphi.m may be attri.uted both to mi.eral reacti.ns responsi.le for modal changes and to local chemi.al heterogenei.y i.heri.ed from the i.i.i.l protoli.h.

关键词： geochemi.try protoli.h peli.i. schi.ts Kuznetsk Alatau Yeni.ey Ri.ge Russi.

Heat Transfer and Performance Characteri.ti.s of Axi.l Cooli.g Fans wi.h Downstream Gui.e Vanes

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Journal of Thermal Sci.nce 2012年第2期21卷 162-171页

作者： Alexandros Terzi. i.anni. Styli.nou Anesti. i. Kalfas Peter Ott Group of Thermal Turbomachi.ery (GTT) School of Engi.eeri.g EPFL-SCI-STI-PO CH-1015 Lausanne Switzerland Laboratory of Flui. Mechani.s and Turbomachi.ery Dept. of Mechani.al Engi.eeri.g School of Engineering Aristotle University of Thessaloniki (AUTH) GR-54124 Thessaloniki Greece

Thi. study exami.es experi.entally the effect of stators on the performance and heat transfer characteri.ti.s of small axi.l cooli.g fans. A si.gle fan i.peller, followed by ni.e stator blades i. the case of a complete stage, was used for all the experi.ental confi.urati.ns. Performance measurements were carri.d out i. a constant speed stage performance test ri. whi.e the transi.nt li.ui. crystal techni.ue was used for the heat transfer measurements. Full surface heat transfer coeffi.i.nt di.tri.uti.ns were obtai.ed by recordi.g the temperature hi.tory of li.ui. crystals on a target plate. The experi.ental data i.di.ated that the results are hi.hly affected by the flow condi.i.ns at the fan outlet. Stators can be benefi.i.l i. terms of pressure drop and effi.i.ncy, and thus more economi.al operati.n, as well as, i. the local heat transfer di.tri.uti.n at the wake of the stator blades i. the fan i. i.stalled very close to the cooli.g object. However, as the separati.n di.tance i.creases, enhanced heat transfer rate i. the order of 25% i. observed i. the case of the fan i.peller.

关键词： axi.l fans stators performance thermochromi. li.ui. crystals transi.nt heat transfer

Electromechani.al coupli.g effect on electroni. properti.s of double-walled boron ni.ri.e nanotubes

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Acta Mechani.a Si.i.a 2012年第6期28卷 1532-1538页

作者： Zhu-Hua Zhang Wan-Li. Guo Bori. i. Yakobson Department of Mechani.al Engi.eeri.g and Materi.ls Sci.nce Rice University Key Laboratory for i.telli.ent Nano Materi.ls and Devi.es of Mi.i.try of Educati.n and i.sti.ute of Nano Sci.nce Nanjing University of Aeronautics and Astronautics

We report on a fi.st-pri.ci.les study of a novel band modulati.n i. zi.zag double-walled boron ni.ri.e nan- otubes （DBNNTs） by applyi.g radi.l strai. and coupled ex- ternal electri. fi.ld. We show that the band ali.nment be- tween the i.ner and outer walls of the DBNNTs can be tuned from type i.to type i. wi.h i.creasi.g radi.l strai., accompa- ni.d wi.h a di.ect to i.di.ect band gap transi.i.n and a sub- stanti.l gap reducti.n. The band gap can be further si.ni.i. cantly reduced by applyi.g a transverse electri. fi.ld. The coupli.g of electri. fi.ld wi.h the radi.l strai. makes the fi.ld-i.duced gap reducti.n bei.g ani.otropi. and more re- markable than that i. undeformed DBNNTs. i. parti.ular, the gap vari.ti.n i.duced by electri. fi.ld perpendi.ular to the radi.l strai. i. the most remarkable among all the modu-lati.ns. These tunable properti.s by electromechani.al cou- pli.g i. DBNNTs wi.l greatly enri.h thei. versati.e appli.a- ti.ns i. future nanoelectroni.s.

关键词： Boron ni.ri.es nanotubes Radi.l deformati.n Electri. fi.ld Band gap

A reali.ti. topologi.al p-n juncti.n at the Bi.Se3 （0001） surface based on planar twi. boundary defects

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Nano Research 2017年第5期10卷 1784-1793页

作者： Hugo Aramberri.M. Carmen Munoz Jorge i. Cerda i.sti.uto de Ci.nci. de Materi.les de Madri. (i.MM-CSi.) Cantoblanco Madrid 28049 Spain

We propose a reali.ti. topologi.al p-n juncti.n （TPNJ） by matchi.g two Bi.Se3 （0001） slabs wi.h opposi.e arrangements of planar twi. boundary defects. The atomi.ti. modeli.g of such a devi.e leads to di.locati.n defects i. the hexagonal latti.e i. several qui.tuple layers. Nevertheless, total energy calculati.ns reveal that the i.terface relaxes, yi.ldi.g a smooth geometri.al transi.i.n that preserves the nearest-nei.hbors fcc-type geometry throughout these defect layers. The electroni., magneti., and transport properti.s of the juncti.n have then been calculated at the ab i.i.i. level under open boundary condi.i.ns, i.e., employi.g a thi.-fi.m geometry that i. i.fi.i.e along the electron transport di.ecti.n. i.deed, a p-n juncti.n i. obtai.ed wi.h a bui.t-i. potenti.l as large as 350 meV. The calculati.ns further reveal the spi. texture across the i.terface wi.h unprecedented detai.. As the mai. result, we obtai. non-negli.i.le transmi.si.n probabi.i.i.s around the F poi.t, whi.h i.volve an electron spi.-fli. process whi.e crossi.g the i.terface.

关键词： topologi.al i.sulators p-n juncti.ns spi.troni.s electroni. devi.es twi. boundari.s

Effect of (Ba_(0.6)Sr_(0.4))Ti._3(BST) Dopi.g on Di.lectri. Properti.s of CaCu_3Ti.4O_(12)(CCTO)

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Journal of Materi.ls Sci.nce & Technology 2012年第12期28卷 1137-1144页

作者： i. Norezan A.K. Yahya M.K. Talari Faculty of Appli.d Sci.nces Universiti Teknologi MARAShah Alam Selangor Malaysia

The effect of （Ba（0.6）Sr（0.4））Ti.3（BST） addi.i.n on di.lectri. properti.s of CaCu3Ti.O（12）（CCTO） cerami. was i.vesti.ated. Cerami. samples wi.h the chemi.al formula （1-x）CaCu3Ti.O（12）＋ x（Ba（0.6）,Sr（0.4））Ti.3 （x=0, 0.05, 0.1, and 0.2） were synthesi.ed from hi.h puri.y oxi.e powders by the conventi.nal soli.-state synthesi. method. X-ray di.fracti.n （XRD） analysi. showed the exi.tence of BST as a secondary phase alongsi.e CCTO. Scanni.g electron mi.roscopy （SEM） i.vesti.ati.n showed a sli.ht decrease i. grai. si.e of doped CCTO samples. Densi.y measurements showed that porosi.y content i.creased wi.h i.creasi.g BST addi.i.n i.di.ati.g low densi.i.ati.n due to hi.h melti.g poi.t secondary phase addi.i.n. Di.lectri. constant of undoped CCTO （x=0） showed lack of stabi.i.y wi.h frequency whi.h dropped drasti.ally between 104 and 105Hz and accompani.d by hi.h di.lectri. loss. Addi.i.n of BST i.to CCTO caused the di.lectri. constant to sli.htly decrease but i.proved stabi.i.y wi.h frequency compared to the undoped sample. The decrease i. di.lectri. constant of doped CCTO samples was suggested to be partly due to the decrease i. average grai. si.e and i.crease i. porosi.y wi.h BST addi.i.n. Nevertheless, a hi.h value of di.lectri. constant was sti.l mai.tai.ed around ～104 range for all doped samples. The di.lectri. loss （tanδ） of all BST-doped samples was lower than that of pure CCTO sample at the frequency range of 103 to 105 Hz probably due to the i.crease of grai.s boundary resi.ti.i.y. The acti.ati.n energy of grai.s boundary （E（gb）） showed hi.her values as compared to the acti.ati.n energy of grai.s （Eg ） for all samples and conforms to the i.ternal barri.r layer capaci.or （i.LC） model.

关键词： CaCu3Ti.O(12)(CCTO) Di.lectri. properti.s (Ba(0.6)Sr(0.4))Ti.3(BST)