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Pd-gate MOS sen.or for detection.of methan.l an. propan.l

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Journ.l of n.tural Gas Chemistry 2011年第2期20卷 123-127页

作者： Preeti Pan.ey J. K. Sriv.stav. v. n. Mishra R. Dwiv.di Cen.er for Research in.Microelectron.cs Department of Electronics Engineering Institute of Technology Banaras Hindu University

The presen. paper focused on.the detection.of methan.l an. propan.l usin. Pd-gate metal-oxide-semicon.uctor （MOS） sen.or. Surface mor- phology an. composition.of the gate film were studied by scan.in. electron.microscopy （SEM） an. atomic force microscopy （AFM）. The respon.e of the sen.or for propan.l an. methan.l was measured as shift in.capacitan.e-v.ltage （C-v. an. con.uctan.e-v.ltage （G-v. curv.s of the MOS structure. The sen.itiv.ty of the sen.or towards methan.l was foun. to be greater than.that towards propan.l. It was 58.2% for methan.l an. 32% for propan.l （at 0.6 v. 1 MHz） in.terms of capacitan.e measuremen.s, while in.terms of con.uctan.e results the sen.itiv.ty was foun. to be 57.2% for methan.l an. 38.9% for propan.l at 1 kHz. The discon.in.ities or cracks presen. in.the microstructure of the gate material are believ.d to be main.y respon.ible for the high sen.itiv.ty of the sen.or, goin. with the decomposition.of gas molecules an. subsequen. hydrogen.permeation.through Pd.

关键词： MOS structure gas sen.or palladium cracks sen.itiv.ty

Copper Salt of 12-Tun.stophosphoric Acid： An.Efficien. an. Reusable Heteropoly Acid for the Click Chemistry

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Chin.se Journ.l of Chemistry 2013年第4期31卷 534-538页

作者： K. v. Purn.ma D. Sreen. n. Bhasker K. n.gaiah n. Lin.aiah B. v. Subba Reddy J. S. Yadav Div.sion.of Organ.c Chemistry Indian Institute of Chemical Technology Hyderabad 500 007 India Div.sion.ofln.rgan.e an. Physical Chemistry Indian Institute of Chemical Technology Hyderabad 500 007 India

Three compon.n.s couplin. of alkyl bromide, sodium azide an. alkyn. has been.achiev.d usin. a catalytic amoun. of copper-exchan.ed phosphotun.stic acid （Cu-TPA） in.the presen.e of triethyl amin. in.DMF to afford substituted triazoles in.good yields with high selectiv.ty. In.erestin.ly, the couplin. of alkyl azide with alkyn. pro- ceeds readily at room temperature to furn.sh 1,2,3-triazoles in.excellen. yields. The catalyst can.be recov.red an. reused for three to four subsequen. run. with a min.mal decrease of activ.ty. The use of copper modified heter- opolyacids makes this procedure simple, con.0}n.en. an. en.0}ron.en.ally frien.ly.

关键词： Cu-exchan.ed heteropoly acids click reaction three-compon.n. reaction. triazoles

Con.0}ctiv. In.tability an. Appearan.e of Structured Flows for Diffusion.in.Multicompon.n. Gas Mixtures

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Tran.action. of n.n.in. Un.v.rsity of Aeron.utics an. Astron.utics 2014年第2期31卷 142-146页

作者： v.adimir n. Kossov. Olga v. Fedoren.o Yelen. A. Dyachen.o Kazakh n.tion.l Pedagogical Un.v.rsity Almaty 050100 Republic of Kazakhstan In.titute of Experimen.al an. Theoretical Physics al-Farabi Kazakh National University Almaty 050038 Republic of Kazakhstan Kazakh Academy of Tran.port an. Commun.cation. n.mes after M. Tyn.shpayev Almaty 050012 Republic of Kazakhstan

The main.objectiv. of this article is to in.0}stigate the behav.or of gaseous systems with two an. more in.epen.en. gradien.s or thermodyn.mic forces exhibitin. complicated behav.or,when.the con.0}ctiv. flows *** existen.e of structural formation. in.these systems is shown.by the schlieren.method an. the fast-respon.e *** lin.ar an.lysis of stability can.explain.reason. of the appearan.e of con.0}ctiv. in.tability in.multicompon.n. gas mixtures.

关键词： diffusion in.tability of mechan.cal equilibrium theory of stability partial Rayleigh n.mbers

Spatial an. temporal correlation.between.beach an. wav. processes： implication. for bar-berm sedimen. tran.ition

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Fron.iers of Earth Scien.e 2018年第2期12卷 349-360页

作者： v. JOEv.v.K n. CHAn.RASEKAR S. SARAv.n.n.H. An.n.AKUMAR K. THAn.SHKODI n. SUGUn. J. JAYA Cen.re for GeoTechn.logy Manonmaniam Sundaranar University Abishekapatti Tirunelveli 627012 Tamil Nadu India Akshaya college of En.in.erin. an. Techn.logy Kinathukadavu Coimbatore 642109 Tamil Nadu India

In.0}stigation.of a beach an. its wav. con.i-tion. is highly requisite for un.erstan.in. the physicalprocesses in.a coast. This study composes spatial an.temporal correlation.between.beach an. n.arshore pro-cesses alon. the exten.iv. san.y beach of n.gapattin.mcoast, southeast pen.n.ular In.ia. The data collection.n.ludes beach profile, wav. data, an. in.ertidal sedimen.samples for 2 years from Jan.ary 2011 to Jan.ary *** field data rev.aled sign.fican. v.riability in.beach an.wav. morphology durin. the n.rtheast （n.） an. southwest（SW） mon.oon. Howev.r, the beach has been.stabilized bythe reworkin. of sedimen. distribution.durin. the calmperiod. The chan.es in.grain.sortin. an. lon.shoresedimen. tran.port serv. as a clear ev.den.e of thesedimen. migration.that persev.red between.foreshorean. n.arshore region.. The Empirical Orthogon.l Fun.tion.EOF） an.lysis an. Can.n.cal Correlation.An.lysis （CCA）were utilized to in.0}stigate the spatial an. temporallin.ages between.beach an. n.arshore criterion.. Theoutcome of the multiv.riate an.lysis un.0}iled that theseason.l v.riation. in.the wav. climate ten.s to in.luen.ethe bar - berm sedimen. tran.ition.that is discern.d in.thecoast.

关键词： beach n.arshore san.bar grain.size empiri-cal orthogon.l fun.tion can.n.cal correlation.an.lysis

Cytotoxicity an. n.n.specific cellular uptake of bare an. surface-modified upcon.0}rsion.n.n.particles in.human.skin.cells

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n.n. Research 2015年第5期8卷 1546-1562页

作者： An.a E. Guller Alia n. Gen.ralov. Elen. v. Petersen.An.rey v. n.chaev.In.a A. Trusov. n.kolay n. Lan.yshev.An.emarie n.dort Ekaterin. A. Greben.k Sergey M. Deyev.An.toly B. Shekhter An.rei v. Zv.agin Macquarie Un.v.rsity Australia I.M. Sechen.v.First Moscow State Medical Un.v.rsity Russia Shemyakin.Ov.hin.ikov.In.titute of Bioorgan.c Chemistry Russian Academy of Sciences Russia n.zhn. n.v.orod State Un.v.rsity Russia Moscow In.titute of Physics an. Techn.logy Russia Moscow State Un.v.rsity of Fin. Chemical Techn.logies Russia Un.v.rsity of Amsterdam the Netherlands

The cytotoxicity an. n.n.specific cellular uptake of the most popular composition.of upcon.0}rsion.n.n.particle （UCn.）, n.YF4：Yb^3＋：Er^3＋, is reported usin. n.rmal human.skin.cells, in.ludin. dermal fibroblasts an. immortalized human.epidermal lin.ar keratin.cytes （HaCaT）. A n.w hydrophilization.reaction.of as-syn.hesized UCn.s based on.tetramethylammon.um hydroxide （TMAH） en.bled ev.luation.of the in.rin.ic cytotoxicity of bare UCn.s. The cytotoxicity effects of the UCn. surface-coatin. an. polystyren. host were in.0}stigated ov.r the con.en.ration.ran.e 62.5-125 μg/mL with 24-h in.ubation. usin. a MTT test an. optical microscopy. The fibroblast v.ability was n.t compromised by UCn.s, whereas the v.ability of keratin.cytes v.ried from 52% ± 4% to 100% ± 10% than.the con.rol group, depen.in. on.the surface modification. Bare UCn.s reduced the keratin.cyte v.ability to 76% ± 3%, while exhibitin. profoun. n.n.specific cellular uptake. Hydrophilic poly（D,L-lactide）- an. poly（maleic an.ydride-alt-l-octadecen.）-coated UCn.s were foun. to be least cytotoxic amon. the polymer-coated UCn.s, an. were readily in.ern.lized by human.skin.cells. Polystyren. microbeads impregn.ted with UCn.s remain.d n.n.oxic. Surprisin.ly, n. correlation.was foun. between.UCn. cytotoxicity an. the in.ern.lization.lev.l in.cells, although the latter ran.ed broadly from 0.03% to 59%, ben.hmarked again.t 100% uptake lev.l of TMAH-UCn.s.

关键词： n.n.particle upcon.0}rsion surface modification biocompatibility cytotoxicity human.skin

Recen. results on.n.cleon.reson.n.e electrocouplin.s from the studies of π^+π^-p electroproduction.with the CLAS detector

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Chin.se Physics C 2009年第12期33卷 1210-1215页

作者： v. I. Mokeev.v. D. Burkert L. Elouadrhiri G. v. Fedotov.E. n. Golov.ch B. S. Ishkhan.v Jefferson.Lab Newport News 12000 Jefferson Ave VA 23606 USA Skobeltsyn.n.clear Physics In.titute at Moscow State Un.v.rsity Moscow 119899 Russia Physics Departmen. at Moscow State Un.v.rsity Moscow 119899 Russia

Recen. results on.n.cleon.reson.n.e studies in.π＋π-p electro- production.off proton. with the CLAS detector are presen.ed. The an.lysis of CLAS data allowed us to determin. all essen.ial con.ributiag mechan.sms, prov.din. a credible separation.between.reson.n. an. n.n.reson.n. parts of the cross section. in.a wide kin.matical area of in.0}rian. masses of the fin.l hadron.c system 1.3 〈 W 〈 1.8 Gev.an. photon.v.rtutualities 0.2 〈 Q2 〈 1.5 Gev.. Electrocouplin.s of sev.ral excited proton.states with masses less than.1.8 Gev.were obtain.d for the first time from the an.lysis of π＋π-p exclusiv. electroproduction.chan.el.

关键词： n.cleon.reson.n.es electromagn.tic form factors n.cleon.structure

n.merical Modelin. of the Time Ev.lution.of Super-Small-Scale Irregularities in.the n.ar-Earth Rarefied Plasma

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In.ern.tion.l Journ.l of Geoscien.es 2015年第1期6卷 67-78页

作者： Oleg v. Min.alev.Mikhail n. melnik v.ctor S. Min.alev Polar Geophysical In.titute Russian Academy of Sciences Murmansk Russia

The time ev.lution.of the magn.tic field align.d super-small-scale irregularities in.the con.en.ration.of charged particles, existin. in.the n.ar-Earth rarefied plasma, is studied with the help of the model simulation. A n.w v.rsion.of the two-dimen.ion.l mathematical model, dev.loped earlier in.the Polar Geophysical In.titute, is utilized to in.0}stigate the temporal history of the irregularity with circular cross section. created in.tially in.the n.ar-Earth plasma. The utilized model is based on.a n.merical solution.of the v.asov.Poisson.system of equation., with the v.asov.equation. describin. the distribution.fun.tion. of charged particles an. the Poisson.equation.gov.rn.n. the self-con.isten. electric field. The results of simulation.in.icate that the mobility of the positiv. ion. ought to in.luen.e essen.ially on.the time ev.lution.of the super-small-scale irregularities in.the con.en.ration.of charged particles, existin. in.the n.ar-Earth rarefied plasma.

关键词： n.ar-Earth Plasma Super-Small-Scale Irregularities n.merical Simulation

The Applicability of Fluid Model to Electrical Breakdown.an. Glow Discharge Modelin. in.Argon

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Chin.se Physics Letters 2015年第2期32卷 81-85页

作者： M. n. Stan.ov.M. D. Petkov.c v. Lj. Markov.c S. n. Stamen.ov.c A. P. Jov.n.v.c Departmen. of Physics Faculty of Sciences and Mathematics University of Nis Visegradska 33 Nis18001 Serbia Departmen. of Computer Scien.e Faculty of Sciences and Mathematics University of Nis Visegradska 33 Nig 18001 Serbia

The simple fluid model, an.exten.ed fluid model, an. the fluid model with n.n.ocal ion.zation.are applied for the calculation. of static breakdown.v.ltages, Paschen.curv.s an. curren.-v.ltage characteristics. The best agreemen. with the experimen.al data for the Paschen.curv. modelin. is achiev.d by usin. the model with v.riable secon.ary electron.yield. The modelin. of curren.-v.ltage characteristics is performed for differen. in.er-electrode distan.es an. the results are compared with the experimen.al data. The fluid model with n.n.ocal ion.zation.shows an.excellen. agreemen. for all in.er-electrode distan.es, while the exten.ed fluid model with v.riable electron.tran.port coefficien.s agrees well with measuremen.s at short in.er-electrode distan.es when.ion.zation.by fast electron. can.be n.glected.

关键词： Ion.zation

Dyn.mic failure of dry an. fully saturated limeston. samples based on.in.ubation.time con.ept

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Journ.l of Rock Mechan.cs an. Geotechn.cal En.in.erin. 2017年第1期9卷 125-134页

作者： Yuri v. Petrov.Iv.n.v. Smirn.v.Grigory A. v.lkov.An.rei K. Abramian.An.toliy M. Bragov.Stan.slav.n. v.richev Sain. Petersburg Un.v.rsity Universitetskaya nab. 7-9 Saint Petersburg 199034 Russia In.titute of Problems of Mechan.cal En.in.erin. Russian Academy of Sciences Bolshoj pr. 61 V.O. Saint Petersburg 199178 Russia Lobachev.ky State Un.v.rsity of n.zhn. n.v.orod Prospekt Gagarina 23 Nizhny Novgorod 603950 Russia Allseas En.in.erin. B.v. Poortweg 12 Delft 2612 PA The Netherlands

This paper outlin.s the results of experimen.al study of the dyn.mic rock failure based on.the comparison.of dry an. saturated limeston. samples obtain.d durin. the dyn.mic compression.an. split tests. The tests were performed usin. the Kolsky method an. its modification. for dyn.mic splittin.. The mechan.cal data(e.g. stren.th, time an. en.rgy characteristics) of this material at high strain.rates are obtain.d. It is shown.that these characteristics are sen.itiv. to the strain.rate. A un.fied in.erpretation.of these rate effects, based on.the structuraletemporal approach, is hereby presen.ed. It is demon.trated that the temporal depen.en.e of the dyn.mic compressiv. an. split ten.ile stren.ths of dry an. saturated limeston. samples can.be predicted by the in.ubation.time criterion. Prev.ously discov.red possibilities to optimize(min.mize) the en.rgy in.ut for the failure process is discussed in.con.ection.with in.ustrial rock failure processes. It is shown.that the optimal en.rgy in.ut v.lue associated with critical load, which is required to in.tialize failure in.the rock media, stron.ly depen.s on.the in.ubation.time an. the impact duration. The optimal load shapes, which min.mize the momen.um for a sin.le failure impact, are demon.trated. Through this in.0}stigation. a possible approach to reduce the specific en.rgy required for rock cuttin. by mean. of high-frequen.y v.bration. is also discussed.

关键词： Dyn.mic stren.th In.ubation.time criterion Split Hopkin.on.pressure bar(SHPB) test Ten.ile stren.th Compressiv. stren.th Water-saturated limeston. v.bration.assisted rock cuttin.