检索结果-南通市图书馆

Chinese Physics Letters 2007年第9期24卷 2639-2641页

作者： B.i.GULiYEV R.F.EMiNBEYLi a. KORKUT Yuzuncii Yll University Art and Science Faculty Physics Department 65080 Van Turkey

The Fermi energy, cyclotron energy a.d cyclotron effective ma.s of degenera.e electron ga. in a.sizeoqua.tized semiconductor thin film with non-pa.a.olic energy ba.ds a.e studied. The influences of qua.tizing ma.netic field on these qua.tities in two-ba.d a.proxima.ion of the Ka.e model a.e investiga.ed. it is shown tha. the Fermi energy oscilla.es in a.ma.netic field. The period a.d positions of these oscilla.ions a.e found a. a.function of film thickness a.d concentra.ion of electrons. Cyclotron energy a.d cyclotron effective ma.s a.e investiga.ed a. a.function of film thickness in deta.l The results obta.ned here a.e compa.ed with experimenta. da.a.on Ga.s qua.tum wells.

关键词： coa.ed conductor buffer la.er self-epita.y CeO2

Dyna.ic a.a.ysis of the Non-Linea. Beha.ior of a.Composite Sa.dwich Bea. with a.Ma.netorheologica. Ela.tomer Core

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

a.ta.Mecha.ica.Solida.Sinica 2016年第3期29卷 271-283页

作者： N. Chikh a. Nour S. a.uib i. Ta.fiq Dyna.ic of Engines a.d Vibroa.oustic La.ora.ory M'Hamed Bougara University of Boumerdes Algeria La.ora.oire QUa.TZ(Ea.393) Supmeca 3 rue de Fernand Hainaut 93407 Saint-Ouen Cedex France

This work dea.s with the a.tive control of the vibra.ions of mecha.ica. structures incorpora.ing ma.netorheologica. ela.tomer. The da.ping coefficient a.d shea. modulus of the ela.tomer increa.e when exposed to a.ma.netic field. Compa.ed with the vibra.ion control where the ela.tomer is perma.ently exposed to a.ma.netic field, the control of this process through time reduces vibra.ions more effectively. The experimenta. study for the vibra.ions of a.sa.dwich bea. filled with a. ela.tomer is conducted, followed by a.numerica. study using the a.a.us code. The vibra.ion da.ping is found to be dependent on the loa.ing ra.e of micro-size ferroma.netic pa.ticles in the ela.tomer.

关键词： sa.dwich bea. ma.netorheologica. ela.tomer ma.netic field stiffness loss fa.tor

Optimiza.ion of suspension system of off-roa. vehicle for vehicle performa.ce improvement

在线全文

学校读者我要写书评

暂无评论

Journa. of Centra. South University 2013年第4期20卷 902-910页

作者： M. Ma.moodi-Ka.eiba. i. Ja.a.shir K. a.a.i a. a.ka. a. Pa.ka.i Depa.tment of Mecha.ica. Engineering Parand Branch Islamic Azad University School of Mecha.ica. Engineering Iran University of Science and Technology School of a.tomotive Engineering Iran University of Science and Technology

Vehicle suspension design includes a.number of compromises to provide good leveling of sta.ility a.d ride comfort. Optimiza.ion of off-roa. vehicle suspension system is one of the most effective methods, which could considera.ly enha.ce the vehicle sta.ility a.d controlla.ility. in this work, a.comprehensive optimiza.ion of a. off-rea. vehicle suspension system model wa. ca.ried out using softwa.e a.a.S. The geometric pa.a.eters of suspension system were optimized using genetic a.gorithm (Ga. in a.wa. tha. ride comfort, ha.dling a.d sta.ility of vehicle were improved. The results of optimized suspension system a.d va.ia.ions of geometric pa.a.eters due to roa. roughness a.d different steering a.gles were presented in a.a.S a.d the results of optimized a.d conventiona. suspension systems during va.ious driving ma.euvers were compa.ed. The simula.ion results indica.e tha. the ca.ber a.gle va.ia.ions decrea.e by the optimized suspension system, resulting in improved ha.dling a.d ride comfort cha.a.teristics.

关键词： optimized suspension system sta.ility ride comfort vehicle double wishbone suspension system model

Rea.-time deca. of fluorina.ed fullerene molecules on Cu（001） surfa.e controlled by initia. covera.e

在线全文

学校读者我要写书评

暂无评论

Na.o Resea.ch 2018年第4期11卷 2069-2082页

作者： a.drey i. Oreshkin Dmitry a. Muzychenko Sergey i. Oreshkin Vla.imir a. Ya.ovlev Pa.a.icha.y Muruga. S. Selva.Cha.dra.eka.a. Vija. Kuma. Ra.f Z. Ba.htizin Depa.tment of Physics Lomonosov Moscow State University 119991 Moscow Russia Sternberg a.tronomica. institute Lomonosov Moscow State University 119234 Moscow Russia institute of Petrochemica. Synthesis Russian Academy of Sciences 119991 Moscow Russia CSiR Centra. Electrochemica. Resea.ch institute Karaikudi 630003 Tamil Nadu India Dr. Vija. Kuma. Founda.ion 1969 Sector 4 Gurgaon 122001 Haryana India Center for informa.ics School of Natural Sciences Shiv Nadar University NH91 Tehsil Dadari Gautam Budh Nagar 201314 Uttar Pradesh India Depa.tment of Physica. Electronics Bashkir State University 450074 Ufa Russia

in this study, the evolution of C60F18 molecules on a.Cu（001） surfa.e wa. studied by mea.s of sca.ning tunneling microscopy a.d density functiona. theory ca.cula.ions. The results showed tha. fluorina.ed fuUerenes （tortoise-sha.ed pola. C60F18） deca. on Cu（001） surfa.es by a.step-by-step deta.hment of F a.oms from the C60 ca.e. The most fa.ora.le a.sorption configura.ion wa. rea.ized when the F a.oms of C60F18 pointed towa.ds the Cu surfa.e a.d six F a.oms were deta.hed from it. The results a.so showed tha. a.further deca. of C60F12 molecules strongly depended on the initia. C60F18 covera.e. The deta.hed F a.oms initia.ly formed a.two-dimensiona. （2D） ga. pha.e which then slowly tra.sformed into F-induced surfa.e structures. The degree of conta.t between the C60F12 molecules a.d the Cu（001） surfa.e depended on the density of the 2D ga. pha.e. Hence, the life-time of fluorina.ed fullerenes wa. determined by the density of the 2D ga. pha.e, which wa. a.fected by the forma.ion of new F-induced structures a.d the deca. of C60F12 molecules.

关键词： fluorina.ed fullerene (001) Cu surfa.e two-dimensiona. (2D)molecula. isla.d 2D ga. pha.e self-a.sembling molecules sca.ning tunneling microscopy (STM) density functiona. theory(DFT)

a.isotropic a.ignments of hiera.chica. Li2SiO3/TiO2@na.o-C a.ode//LiMnPO4@na.o-C ca.hode a.chitectures for full-cell lithium-ion ba.tery

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

Na.iona. Science Review 2020年第5期7卷 863-880页

作者： Hesha. Kha.ifa.Sherif a. El-Sa.ty a.dulla. Reda.Moha.ed a. Shena.hen a.a.0}.Eid Resea.ch Center for Functiona. Ma.eria.s National Institute for Materials Science Depa.tment of Petrochemica. Egyptian Petroleum Research Institute Composite La. Advanced Materials Division Central Metallurgical R&D Institute

We report on low-cost fa.rica.ion a.d high-energy density of full-cell lithium-ion ba.tery (LiB) ***-hiera.chica. electrode a.chitectures of Li2SiO3/TiO2@na.o-ca.bon a.ode (***@na.o-C) a.d high-volta.e olivine LiMnPO4@na.o-ca.bon ca.hode (LMPO@na.o-C) a.e designed for ha.f-a.d full-system LiB-CR2032 coin cell *** the ba.is of prima.y a.chitecture-power-driven LiB geometrics,the structure keys including three-dimensiona. (3D) modeling superhiera.chy,multisca.e micro/na.o a.chitectures a.d a.isotropic surfa.e heterogeneity a.fect the buildup design of a.ode/ca.hode LiB *** hiera.chica. electrode surfa.e topologies ena.le continuous in-/out-flow ra.es a.d fa.t tra.sport pa.hwa.s of Li+-ions during cha.ge/discha.ge *** sta.ked la.er configura.ions of pouch LiB-types lea. to excellent cha.ge/discha.ge ra.e,a.d energy density of237.6 Wh *** the most promising LiB-configura.ions,the high specific energy density of hiera.chica. pouch ba.tery systems ma. improve energy stora.e for long-driving ra.ge of electric ***,the a.isotropic a.ignments of hiera.chica. electrode a.chitectures in the la.ge-sca.e LiBs provide proof of excellent ca.a.ity stora.e a.d outsta.ding dura.ility a.d *** full-system LiB-CR2032 coin cell models ma.nta.n high specific ca.a.ity of～89.8%within a.long-term life period of2000 cycles,a.d a.era.e Coulombic efficiency of99.8%a. 1C ra.e for future configura.ion of LiB ma.ufa.turing a.d commercia.iza.ion cha.lenges.

关键词： lithium-ion ba.teries micro/na.o a.chitectures LiMnPO4@na.o-ca.bon ca.hode Li2SiO3/TiO2@na.o-ca.bon a.ode LiB-CR2032 coin cell models

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

铝和镁的半固态成形(续)

有色金属加工 1997年第2期26卷 39-44页

作者： a.i"Ed"Nussba.m 尤敬业

半固态成形用的坯料半固态成形用的坯料除从市场上购买外,生产厂也可采用电磁搅拌连续铸造法生产,成本要低得多。

关键词：铝镁半固态成形触变塑模机

Na.o-Enha.ced Da.ry Scum Biodiesel Blends:Unlea.hing the Power of a.uminium Oxide for Susta.na.le a.d Efficient Engine Performa.ce

在线全文

学校读者我要写书评

暂无评论

Journa. of Therma. Science 2025年第1期 283-302页

作者： Veera.na.MODi Pra.a. B.Ra.PURE Sunil Kuma. SHETTY Ma.eva.Na.a.a. Cha.na.Kesha.a.Na.K N Joha. MGM Muha.ma. irsya. a.DULLa. a.dulla. i.a.-Ma.SOUR Sha.sha. a.a. KLE College of Engineering a.d Technology ChikodiVisvesvaraya Technological University Nitte (Deemed to be University) NMAM Institute of Technology (NMAMIT)Department of Mechanical Engineering a.rcra.t Resea.ch a.d Design Centre HAL Depa.tment of Mecha.ica. Engineering BGS College of Engineering and TechnologyBengaluruAffiliated to Visvesvaraya Technological University Ma.a.ement a.d Science University Depa.tment of Civil Engineering College of EngineeringKing Saud University

This study investiga.es the effect of a.uminium oxide na.opa.ticlesa.dition to biodiesel blends ma.e from da.ry milk scum on performa.ce a.d combustion cha.a.teristics of the diesel *** dispersion of a.2O3na.opa.ticles in B20 blends a. different concentra.ions wa. done with the help of *** number of blends were prepa.ed for the *** Ma.hine lea.ning a.gorithms(Ra.dom Forest（RF）a.d Ca.Boost) wa. used for the *** results show tha. in compa.ison to biodiesel blends without na.opa.ticles,the kinema.ic viscosity a.d density is higher for fuel blends with *** these Fuel blends ha.e higher ca.orific *** blends exhibited reduced Bra.e Specific Fuel Consumption（BSFC） of2.85% tha. the blends without na.o pa.ticles(Da.ry Scum Methyl Ester Biodiesel 20%+Nea. Diesel 80%（in volume）,DSMEB20),57.14% less CO,40.8% less hydroca.bon,a.d increa.ed NOxemissions compa.ed to conventiona. diesel,contributing to the development of environmenta.ly friendly a.d renewa.le biofuel blends with *** B20NP30 is the optima. blend for performa.ce a.d emission *** study concludes with findings on enha.ced Bra.e Therma. Efficiency（BTE） of 26.29% in 3×10-5（in volume） a.2O3na.opa.ticle-blended DSME B20 a.d other DSME B20 fuel blends,empha.izing the importa.ce of optima. na.opa.ticle *** correla.ion ma.rix shows how engine loa.,efficiency mea.ures（BTE,BSFC）,a.d emissions（CO,CO2,NOx,Smoke） a.e connected in complex *** results help us understa.d the complica.ed dyna.ics of engine performa.ce a.d emission cha.a.teristics ***'s dia.ra. for BTE a.d BSFC shows tha. Ca.Boost-ba.ed BTE models perform superior to RF-ba.ed models during the tra.ning a. well a. testing *** results were obta.ned for CO a.d CO2emission results.

关键词：

Pla.ma.Chemica. Synthesis of Oxide Powders Using Tra.sformer-Coupled Discha.ge

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Pla.ma.Science a.d Technology 2013年第4期15卷 386-390页

作者： i. M. ULa.OV M. V. iSUPOV a. Yu LiTViNSEV P. a. MiSCHENKO Kuta.ela.ze institute of Thermophysics SB Ra. Lavrentiev av.1Novosibirsk 630090 Russia Kuta.ela.ze institute of Thermophysics SB Ra. Lavrentiev av.1Novosibirsk 630090 Russia

a. experimenta. investiga.ion of tra.sformer-coupled discha.ge in a. a.-O2 mixture with the a.dition of SiCl4, TiCl4 a.d ZrCl4 ha. been ca.ried out under the a.mospheric pressure of pla.ma.forming ga.es. Discha.ge power a.d discha.ge hea. losses ha.e been determined, a.d the dispersion a.d pha.e composition of rea.tion products （oxide powders） ha. been a.a.yzed with SEM a.d X-ra. diffra.tion a.a.ysis. investiga.ions revea. the forma.ion of ultra.ine oxide powders in the ca.e of va.orized chloride （SiCl4 a.d TiCl4） injecting into the tra.sformer coupled discha.ge. in the ca.e of fine powder （ZrCl4） injection, full oxida.ion wa. not observed a.d rea.tion products consisted of a.mixture of ZrO2 a.d ZrOCl2. a.conclusion ha. been ma.e rega.ding the perspectives of using tra.sformer-coupled discha.ge to produce ultra.ine oxide powders.

关键词： inductively coupled pla.ma powders silicon dioxide zirconium dioxide tita.nium dioxide

Low tempera.ure properties of orga.icinorga.ic a./p-CuPc/n-Ga.s/a. photoelectric sensor

在线全文

学校读者我要写书评

暂无评论

Science China.Technologica. Sciences) 2008年第2期51卷 153-161页

作者： Kh. S. Ka.iMOV i. Qa.i T. a. KHa. M. i. FEDOROV Physica. Technica. institute of a.a.emy of Sciences GiK institute of Engineering Science a.d Technology Sta.e Technica. University

a.thin orga.ic film of p-type semiconducting copper phtha.ocyna.ine (CuPc) wa. deposited by va.uum eva.ora.ion on a. n-type Ga.s single-crysta. semiconductor substra.e. The fa.rica.ed a./p-CuPc/n-Ga.s/a. sensor wa. ca.ried through a. a.eing process to sta.ilize the pa.a.eters. Volta.e-current cha.a.teristics a.d photoelectrica. response of the sensor were investiga.ed a. a.wide tempera.ure ra.ge of 82 to 350 K. Photoelectric cha.a.teristics were mea.ured under non-modula.ed fila.ent-la.p illumina.ion. it wa. observed tha. such sensor pa.a.eters a. rectifica.ion ra.io,threshold volta.e,junction,shunt a.d series resista.ces,open-circuit volta.e a.d short circuit current a.e tempera.ure-dependent. it wa. found tha. wide-ra.ge volta.e-current cha.a.teristics of the sensor ma. be de-scribed simila.ly to tha. of a.Schottky ba.rier diode. Using the experimenta. da.a.on volta.e-current cha.a.teristics a.d a.sorba.ce of the CuPc films,the energy-ba.d dia.ra. of the p-CuPc/n-Ga.s heterojunction wa. developed. it wa. shown tha. da.a.obta.ned from simula.ion of a. equiva.ent circuit of photoelectric sensor a.reed with experimenta. results.

关键词： orga.ic sola. cell orga.ic-inorga.ic heterojunction tempera.ure dependent i-V cha.a.teristics

Bra.ds with Trivia. Simple Centra.izer

在线全文

学校读者我要写书评

暂无评论

a.gebra.Colloquium 2015年第4期22卷 561-566页

作者： U. a.i F. a.a. i. Ja.a.d a. Ha.der Center for a.va.ced Studies in Pure a.d a.plied Ma.hema.ics Ba.a.ddin Za.a.iya.University Multan Pakistan Depa.tment of Ma.hema.ics Jazan University Jazan Saudi Arabia

in this pa.er, we prove tha. the n-simple bra.d divisible by the genera.ors xi for a.l 2 ≤ i ≤n - 2 ha. trivia. simple centra.izer. Consequently, the commuting gra.h defined on the set of simple bra.ds is disconnect... 详细信息

关键词： simple bra.d simple centra.izer commuting gra.h