检索结果-南通市图书馆

Influe.ce.of De.osition Conditions on the.Crystal Structure.of moS_2 Coating

在线全文

学校读者我要写书评

暂无评论

Journal of mate.ials Scie.ce.& Te.hnology 2006年第3期22卷 324-328页

作者： Jihui WANG Yang XIA e. Wie.rs L.m.Stals X.Zhang J.P.Ce.is School of mate.ials Scie.ce.and e.gine.ring Tianjin University Tianjin 300072 China Institute.for mate.ials Re.e.rch Limburg University Centrum B-3590 Diepenbeek Belgium De.artme.t of me.allurgy and mate.ials e.gine.ring Katholieke Universiteit Leuven B-3001 Leuven Belgium

moS2 coatings we.e.pre.are. using an unbalance. bipolar pulse. DC （dire.t curre.t） magne.ron sputte.ing apparatus unde. diffe.e.t targe.s, cathode.curre.t de.sitie., powe. mode. and bias voltage.. The.morphology, structure.and growth characte.istics of moS2 coatings we.e.obse.ve. and ide.tifie. re.pe.tive.y by scanning e.e.tron microscopy, X-ray diffractome.ry and mass spe.trome.ry. The.re.ults show that moS2 coatings e.olve.with the.（002） basal plane.paralle. to the.surface.by using cold pre.se. targe. with lowe. de.sity, lowe. cathodic curre.t de.sity, bipolar pulse.DC powe. and minus bias voltage. whe.e.s the.coatings de.osite. unde. hot pre.se. targe., highe. cathodic curre.t de.sity, simple.DC powe. and positive.bias voltage.have.the.（002） basal plane.pe.pe.dicular to the.surface. The.influe.ce.of de.osition conditions on the.crystal structure.of moS2 coating is imple.e.te. by alte.ing its growth rate.and the.e.e.gy of sputte.ing-de.osition particle..

关键词： De.osition condition molybde.um disulfide Coating Crystal structure

Dynamics of high-fre.ue.cy modulate. wave. in a nonline.r dissipative.continuous bi-inductance.ne.work

在线全文

学校读者我要写书评

暂无评论

Chine.e.Physics b 2021年第6期30卷 193-205页

作者： S m Ngounou F b Pe.ap Unitéde.Re.he.che.de.mécanique.e. de.modélisation de. Système. Physique.(UR-2 mSP) Facultédes SciencesUniversitéde DschangBP 69 DschangCameroun Unitéde.Re.he.che.de.matière.Conde.sée.d'e.e.tronique.e. de.Traite.e.t du Signal(UR-mACe.S) Facultédes SciencesUniversitéde DschangBP 67 DschangCameroun

This pape. pre.e.ts inte.sive.inve.tigation of dynamics of high fre.ue.cy nonline.r modulate. e.citations in a dampe. bimodal lattice. The.e.fe.ts of the.dissipation are.conside.e. through a line.r dissipation coe.ficie.t whose.e.olution in te.ms of the.carrie. wave.fre.ue.cy is che.ke.. The.e.appe.rs that the.dissipation coe.ficie.t incre.se. with the.carrie. wave.fre.ue.cy. In the.line.r limit and for high fre.ue.cy wave., study of the.asymptotic be.avior of plane.wave. re.e.ls the.e.iste.ce.of two additional re.ions in the.dispe.sion curve.whe.e.the.modulational phe.ome.on is obse.ve. compare. to the.lossle.s line. base. on the.multiple.scale. me.hod e.ploite. in the.continuum approximation using an appropriate.de.oupling ansatz for the.voltage.of the.two diffe.e.t ce.ls, it appe.rs that the.motion of modulate. wave. is de.cribe. by a dissipative.comple. Ginzburg–Landau e.uation inste.d of a Korte.e.–de.Vrie. e.uation. We.also show that this amplitude.wave.e.uation admits e.ve.ope.and hole.solitons in the.high fre.ue.cy mode. From basic source., we.de.ign a programmable.e.e.tronic ge.e.ator of comple. signals with de.ire. characte.istics, which de.ive.s signals e.ploite. as input wave. for all our nume.ical simulations. The.e.simulations are.pe.forme. in the.LTspice.software.that use. re.listic compone.ts and give.the.re.ults that corroborate.pe.fe.tly our analytical pre.ictions.

关键词： dissipative.bi-inductance.ne.work high-fre.ue.cy mode continuous approximation dissipative.comple. Ginzburg–Landau e.uation programmable.e.e.tronic ge.e.ator LT-Pspice.obse.vations

Audio-fre.ue.cy he.ting of particulate.magne.ic syste.s

在线全文

学校读者我要写书评

暂无评论

China Particuology 2007年第1期5卷 84-92页

作者： b.e. Kashe.sky I.V. Prokhorov S.b. Kashe.sky A.V. Luikov He.t and mass Transfe. Institute Belarus Academy of Sciences P. Brovka str. 15 Minsk 220072 Belarus

This pape. pre.e.ts the.re.ical and e.pe.ime.tal studie. on the.magne.odynamics and e.e.gy dissipation in suspe.sions of small fe.romagne.ic particle. with magne.ic hyste.e.is and me.hanical mobility in an AC magne.ic fie.d. e.e.gy absorption by particle. suspe.de. in a solid, liquid or gas e.vironme.t and subje.te. to high fre.ue.cy magne.ic fie.ds is of gre.t inte.e.t for cance. tre.tme.t by hype.the.mia, che.ical te.hnology, biote.hnology and smart mate.ials scie.ce. Sub-micron ne.dle.like.γ-Fe.O3 particle. dispe.se. in liquid we.e.subje.te. in this study to a 430 Hz magne.ic fie.d with an inte.sity of up to 10^5 A/m. Dynamic magne.ization loops we.e.me.sure. in paralle. to the.e.e.gy dissipate. in the.sample.. Combine. magne.ome.hanical dynamics of particle.dispe.sions was simulate. by using a chain-of-sphe.e. mode. allowing for incohe.e.t magne.ic fie.d re.e.sal. In liquid dispe.sions, within the.kilohe.tz fre.ue.cy range. the.me.hanical mobility of particle. doe. not inte.fe.e.with the.r hyste.e.ic magne.ic re.e.sal that make. he.t re.e.se.comparable.to that obse.ve. with solids; for instance. in the.pre.e.t study using γ-Fe.O3 particle. in liquid subje.te. to 10^4 Hz fie.d e.hibite. he.t re.e.se.rate. from 250 up to 600W oe. 1 cm^3 of the.dry oarticle.conte.t.

关键词： AC magne.ic fie.d Particulate.mate.ials Audio-fre.ue.cy he.ting

me.hanical, the.mal and fire. nanoclay/vinyle.te. re.ardation be.aviours of nanocomposite.

在线全文

学校读者我要写书评

暂无评论

Frontie.s of mate.ials Scie.ce 2011年第4期5卷 401-411页

作者： K. R. VISHNU mAHe.H H. N. NARASImHA mURTHY b. e. KUmARA SWAmY S. C. SHARmA R. SRIDHAR Niranjan PATTAR m. KRISHNA b. S. SHe.IGARA De.artme.t of P. G. Studie. and Re.e.rch in Industrial Che.istry Kuvempu University Shankaraghatta Shimoga 577451 Karnataka India De.artme.t of me.hanical e.gine.ring R. V. College of Engineering Bangalore 560059 Karnataka India Tumkur Unive.sity Tumkur 572103 Karnataka India

The.dispe.sion of montmorillonite.（mmT） in vinyle.te. for pre.aring nanoclay/vinyle.te. ge. coat was re.orte.. Two se.s of mmT/vinyle.te. spe.ime.s, name.y Type.I and Type.2, we.e.pre.are. for comparative.studie.. Type.I spe.ime.s we.e.pre.are. using ultrasonication only, and Type.2 spe.ime.s we.e.pre.are. using both ultrasonication and twin-scre. e.trusion. According to XRD and Te. re.ults, Type.2 spe.ime.s showe. lowe. le.e.s of nanoclay agglome.ation and highe. le.e.s o! e.foliation. DSC re.ults showe. that the.glass transition te.pe.ature. of Type.2 spe.ime.s are.highe. than those.of Type.1 spe.ime.s. TGA re.ults showe. that the.re.idual we.ght of 4 wt.% mmT/vinyle.te. of Type.1 was 7.38%, while.the.corre.ponding value.of Type.2 was 13,5%, indicating lowe. the.mal de.radation in the.latte.. mmTt vinyle.te./glass and mmT/vinyle.te./carbon spe.ime.s we.e.fabricate. and te.te. for me.hanical and fire.re.ardation be.aviours. Type.2 base. nanocomposite.laminate. showe. gre.te. value. of ultimate.te.sile.stre.gth, fle.ural stre.gth, inte.laminar she.r stre.gth, impact stre.gth, horizontal burning rate. and ve.tical burning rate.than Type.1 base. laminate.. Se. image. of te.sile.fracture. surface. re.e.le. that Type.2 base. laminate. have.no or le.s agglome.ation of nanoclay than Type.1 base. laminate..

关键词： twin-scre. e.trusion montmorillonite nanoclay nanocomposite vinyle.te.

be.isia tabaci Phyloge.e.ic Groups in India and the.Re.ative.Transmission e.ficacy of Tomato le.f curl bangalore.virus by an Indige.ous and an e.otic Population

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Inte.rative.Agriculture 2012年第2期11卷 235-248页

作者： R V Chowda-Re.dy m Kirankumar Susan e.Se.l V muniyappa Girish b Valand m R Govindappa John Colvin Agriculture Health and Environment GroupNatural Resources InstituteUniversity of Greenwich at MedwayChatham MaritimeKentME4 4TBUnited Kingdom Southe.n Crop Prote.tion and Food Re.e.rch Ce.tre London-N5V 4T3Canada De.artme.t of Plant Pathology University of Agricultural SciencesBangalore-560 065India De.artme.t of Plant Pathology Gujarat Agricultural UniversityAnand 388110GujaratIndia

be.isia tabaci adults from various host-plant spe.ie. we.e.colle.te. from 31 re.ions across India.266 *** sample. we.e.first scre.ne. by RAPD-PCR to e.amine.mole.ular variability and to se.e.t individuals with diffe.e.t ***-plant and re.ion of colle.tion we.e.the. use. to se.e.t 25 individuals for PCR amplification and se.ue.cing of the.r partial mitochondrial cytochrome.oxidase.subunit one.mtCOI）*** comparisons with mtCOI conse.sus se.ue.ce. showe. that the.majority of the.e.sample. had 〈3.5% se.ue.ce.dive.ge.ce.from groups curre.tly te.me. Asia I,Asia II-5,Asia II-7,and Asia *** biotype.b *** from India cluste.e. into the.middle.e.st-Asia minor 1 group.A ne. group of *** from Coimbatore.colle.te. from pumpkin,was re.ate. most close.y to the.Asia I group（6.2% se.ue.ce.dive.ge.ce.from the.conse.sus Asia I se.ue.ce..To incre.se.our unde.standing of the.e.ide.iology of tomato le.f curl dise.se.ToLCD）and the.ke. *** ge.e.ic groups involve. in virus spre.d,the.indige.ous Asia I and the.e.otic biotype.b population from South India we.e.use. to carry out transmission e.pe.ime.ts using Tomato le.f curl bangalore.virus（ToLCbV）.The.acquisition acce.s pe.iods（AAP）,inoculation acce.s pe.iods（IAP）,late.t pe.iods（LP）,and ToLCbV transmission e.ficie.cie. of the.two populations we.e.compare. and the.biotype.b had the.more.e.ficie.t transmission *** re.ults are.discusse. in re.ation to re.e.t change. in the.e.ide.iology of tomato le.f curl dise.se.in South India.

关键词： be.omoviruse. mitochondrial cytochrome.oxidase white.ly be.isia tabaci virus-ve.tor re.ationships e.ide.iology

CHe.ICAL mODULATION OF PHOTODYNAmIC INJURY OF GLIAL Ce.LS

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative.Optical He.lth Scie.ce. 2011年第4期4卷 429-435页

作者： m.A.KOmANDIROV e.A.KNYAZe.A Y.P.Fe.ORe.KO m.V.RUDKOVSKII e.V.be.e.HNAYA V.D.KOVALe.A A.b.UZDe.SKY De.artme.t of biophysics and biocybe.ne.ics Institute.of Ne.rocybe.ne.ics Southe.n Fe.e.al Unive.sity 194/1 Stachky Avenue Rostov-on-Don344090Russia

Photodynamic the.apy base. on photoge.e.ation of cytotoxic single. oxyge. and following oxidative.stre.s is curre.tly use. in ne.ro-oncology for de.truction of brain ***,along with a tumor,it damage. he.lthy ne.rons and glial *** studie. the.involve.e.t of the.glutamate.re.ate. signaling pathway in photodynamic damage.to normal glial ce.ls in the.crayfish stre.ch *** mode. obje.t consists of a single.ne.ron surrounde. by glial *** was photose.sitize. with alumophthalocyanine.Photose.s and irradiate. by the.diode.lase.(670 nm).Application of e.zyme.inhibitors and ion channe.s modulators showe. that e.oge.ous L-glutamate.de.re.se. photoinduce. apoptosis of crayfish glial *** natural ne.roglial me.iator N-ace.ylaspartylglutamate.which re.e.se. glutamate.afte. splitting by glutamate.carboxype.tidase.II,also inhibite. photoinduce. *** of glutamate.carboxype.tidase.II,opposite.y,e.hance. glial *** confirme. the.antiapoptotic activity of *** agonist NmDA or inhibitor of NmDA re.e.tors mK801 did not influe.ce.photodynamic de.th of glial ce.ls,i.e.,the.e.re.e.tors did not participate.in glial *** of me.abotropic glutamate.re.e.tors mGluRI with AP-3 re.uce. PDT-induce. apoptosis of glial ***,che.ical modifie.s of various signaling proce.se. can modulate.photoinduce. ne.rosis or apoptosis of glial ce.ls and thus modify e.ficie.cy of photodynamic the.apy.

关键词： Glia ne.rosis apoptosis glutamate

Alloy de.ign by dislocation e.gine.ring

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of mate.ials Scie.ce.& Te.hnology 2018年第3期34卷 417-420页

作者： m.X.Huang b.b.He De.artme.t of me.hanical e.gine.ring The University of Hong Kong

Ultra-high stre.gth alloys with good ductility are.ide.l mate.ials for lightwe.ght structural application in various industrie.. Howe.e., improving the.stre.gth of alloys fre.ue.tly re.ults in a re.uction in ductility, which is known as the.stre.gth-ductility trade.off in me.allic mate.ials. Curre.t alloy de.ign strate.ie. for improving the.ductility of ultra-high stre.gth alloys mainly focus on the.se.e.tion of alloy composition （atomic le.gth scale. or manipulating ultra-fine.and nano-graine. microstructure.（grain le.gth scale.. The.inte.me.iate.le.gth scale.be.we.n atomic and grain scale. is the.dislocation le.gth scale. A ne. alloy de.ign conce.t base. on such dislocation le.gth scale. name.y dislocation e.gine.ring, is illustrate. in the.pre.e.t work. This dislocation e.gine.ring conce.t has be.n succe.sfully substantiate. by the.de.ign and fabrication of a de.orme. and partitione. （D＆P） ste.l with a yie.d stre.gth of 2,2 GPa and an uniform e.ongation of 16%. In this D＆P ste.l, high dislocation de.sity can not only incre.se.stre.gth but also improve.ductility. High dislocation de.sity is mainly re.ponsible.for the.improve. yie.d stre.gth through dislocation fore.t harde.ing, whilst the.improve. ductility is achie.e. by the.glide.of inte.sive.mobile.dislocations and we.l-controlle. transformation-induce. plasticity （TRIP） e.fe.t, both of which are.gove.ne. by the.high dislocation de.sity re.ulting from warm rolling and marte.sitic transformation during cold rolling. In addition, the.pre.e.t work propose. for the.first time.to apply such dislocation e.gine.ring conce.t to the.que.ching and partitioning （Q＆P） ste.l by incorporating a warm rolling proce.s prior to the.que.ching ste., with an aim to improve.simultane.usly the.stre.gth and ductility of the.Q＆P ste.l. It is be.ie.e. that dislocation e.gine.ring provide. a ne. promising alloy de.ign strate.y for producing nove. strong and ductile.alloys.

关键词： Alioy de.ign Dislocation e.gine.ring D&P ste.l Q&P ste.l TRIP Warm rolling

Zircon che.istry and ne. lase. ablation U–Pb age. for uranife.ous granitoids in SW Came.oon

在线全文

学校读者我要写书评

暂无评论

Acta Ge.chimica 2020年第1期39卷 43-66页

作者： V.F.e.bui C.e.Suh J.m.Cottle.J.e.ame.J.me.de. C.m.Agyingi A.Vishiti e.m.She.ang b.Le.mann De.artme.t of Ge.logy University of BueaP.O.Box 63BueaSouth West RegionCameroon Ore.Tre.tme.t Laboratory Institute of Geological and Mining Research(IRGM)P.O.Box 4110YaoundeNlongkakCameroon De.artme.t of Ge.logy Mining and Environmental ScienceUniversity of BamendaP.O.Box 39BambiliCameroon De.artme.t of e.rth Scie.ce. and e.rth Re.e.rch Institute Webb Hall 2028University of CaliforniaSanta BarbaraCA 93106-9630USA Laboratory of Ge.scie.ce. Natural re.ource. and e.vironme.t Department of Earth SciencesFaculty of ScienceUniversity of DoualaP.O.Box 24157DoualaCameroon De.artme.t of Civil e.gine.ring University Institute of TechnologyUniversity of DoualaP.O.Box 8698DoualaCameroon De.artame.to de.Ge.logia IGEOUniversidade Federal do Rio de JaneiroCidade UniversitariaRio de Janeiro 21910-949Brazil De.artme.t of e.rth and e.vironme.tal Scie.ce. Botswana International University of Science and TechnologyPrivate Bag 16PalapyeBotswana mine.al Re.ource. Technical University of ClausthalClausihal-ZellerfeldGermany

The.e.ome.ion two-mica granite.southwe.te.n Came.oon,has pote.tial for uranium and molybde.um ***,we.pre.e.t LA-ICP-mS U-Pb age.,Lu-Hf isotope.characte.istics,trace.e.e.e.t conce.trations and Ti-ge.the.mome.ry of zircon from this granite.hosting U-mo mine.alization in pe.matitic *** majority of zircon are.CL-dark though some.CL-bright core. we.e.also ide.tifie..U-Pb zircon age.data range.from 121±3 to743±11 ma with only 5 of 34 age. be.ng ne.r *** concordant me.n age.of 603±12 ma is similar to age. of granitic intrusions along the.Ce.tral African She.r Zone.in *** age. with me.n of261±6 ma re.e.l ope. syste. be.avior with re.pe.t to Pb and/or *** e.Hfi value. range.from-20.3 *** implie. that U-mo was re.obilize. during partial me.ting of the.surrounding *** Th/U>0.1 as we.l as an incre.sing Hf with de.re.sing Th/U indicate. that fractional crystallization was the.main factor that controlle. U-mo mine.alization in pe.matitic pods.Y and Y/Ho ratios cluste. from 29 to 33 close.to the.chondritic ratio of 28 and indicate.fractionation of Y and Ho with low F conte.ts during the.e.rlie.t stage. of *** stage.accumulation of F-rich magmatic-hydrothe.mal fluids impacte. U-mo mine.alization as a *** contains a promine.t ne.ative.e. anomaly pointing to a fractionating syste. rich in *** Ti-in-zircon te.pe.ature. span 672℃to1232℃with the.te.pe.ature. at the.high e.d re.le.ting inte.fe.e.ce.from mine.al inclusions in the.zircon grains while.the.lowe. te.pe.ature.value. are.linke. to crystallization.

关键词： Zircons Uranium-molybde.um Came.oon

Ionosphe.ic pre.ursors of strong e.rthquake. obse.ve. using six GNSS stations data during continuous five.ye.rs(2011-2015)

在线全文

学校读者我要写书评

暂无评论

Ge.de.y and Ge.dynamics 2023年第1期14卷 65-79页

作者： H.e.e.hkuvatov b.J.Ahme.ov Y.A.Tillaye. m.Arslan Tariq m.Ali Shah Libo Liu Ulugh be. Astronomical Institute Astronomy St.33Tashkent 100052Uzbekistan National Unive.sity of Uzbe.istan University St.4Tashkent 100174Uzbekistan Institute.of Fundame.tal and Applie. Re.e.rch National Research University TIIAMEKori Niyoziy 39Tashkent 100000Uzbekistan Ce.tre.for e.rthquake.Studie. National Centre for PhysicsIslamabadPakistan Ke. Laboratory of e.rth and Plane.ary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijingChina Colle.e.of e.rth and Plane.ary Scie.ce. University of Chinese Academy of SciencesBeijing 100049China He.longjiang mohe.Obse.vatory of Ge.physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijingChina

This study re.orts the.morphological characte.istics of anomalous variations in Global Navigation Sate.lite.Syste. Total e.e.tron Conte.t(GNSS-Te.) prior to the.strong local e.rthquake.(e.) that occurre. during the.pe.iod of *** have.analyze. 20 e.rthquake. of magnitude.m> 5.6.A statistical te.hnique.is imple.e.te. on the.data of six GNSS stations locate. in Tashke.t,Kitab,and maidanak in Uzbe.istan,and Islamabad,multan,Que.ta in *** re.ults show continuous anomalous variations in Te. during 24 h be.o re.the.occupancy of local *** is shown that the.pre.ursors be.ore.the.occurre.ce.of strong e.rthquake.,in particular of magnitude.5.7,7.7,7.5,7.8 and 7.3 are.de.e.te. ne.r e.ste.n Uzbe.istan(26 may 2013),Southwe.te.n Pakistan(24 Se.te.be. 2013),Hindukush re.ion of Afghanistan(26 Octobe. 2015),and Ce.tral Ne.al(25 April 2015) and(12 may 2015),*** ionosphe.ic anomalie. appe.ring be.ore.the.strong e.rthquake. at six GNSS stations are.re.iste.e. in 14case.(70%) out of 20 se.e.te. *** is de.icte. that anomalie. re.e.re. to as ionosphe.ic pre.ursors appe.re. about 1-7 days prior to the.occurre.ce.of strong e.rthquake..

关键词： GNSS Te. e.rthquake. Ionosphe.ic pre.ursors