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Phase composition.con.uctivity,an. sen.or properties of cerium-doped in.ium oxide

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n.n. Materials Scien.e 2024年第2期6卷 193-200页

作者： M.I.Ikim G.n.Gerasimov V.F.Gromov O.J.Ilegbusi L.I.Trakhten.erg n.n.semenov Federal Research Cen.er for Chemical Physics of RAS MoscowRussia Un.versity of Cen.ral Florida OrlandoFLUSA Moscow In.titute of Physics an. Techn.logy(State Un.versity) DolgoprudnyMoscow RegionRussia Lomon.sov Moscow State Un.versity MoscowRussia

The hydrothermal syn.hesis of In.(2)O_(3)an. CeO_(2)–In.(2)O_(3)is in.estigated as well as the properties of sen.or layers based on.these compoun.s.Durin. the syn.hesis of In.(2)O_(3),in.ermediate products In.OH)_(3)an. In.OH are formed,which are the precursors of stable cubic(c-In.(2)O_(3))an. metastable rhombohedral(rh-In.(2)O_(3))phases,respectively.A tran.ition.from c-In.(2)O_(3)to rh-In.(2)O_(3)is observed with the addition.of CeO_(2).The in.roduction.of cerium in.o rh-In.(2)O_(3)results in.a decrease in.the sen.or respon.e to hydrogen.while it in.reases in.composites based on.c-In.(2)O_(3).The data on.the sen.or activity of the composites correlate with XPS results in.which CeO_(2)causes a decrease in.the con.en.ration. of chemisorbed oxygen.an. oxygen.vacan.ies in.rh-In.(2)O_(3).The reverse situation.is observed in.composites based on.c-In.(2)O_(3).Compared to In.(2)O_(3)an. CeO_(2)–In.(2)O_(3)obtain.d by other methods,the syn.hesized composites demon.trate maximum respon.e to H_(2)at low temperatures by 70–100℃,an. have short respon.e time(0.2–0.5 s),short recovery time(6–7 s),an. lon.-term stability.A model is proposed for the depen.en.e of sen.itivity on.the direction.of electron.tran.fer between.In.(2)O_(3)an. CeO_(2).

关键词： Cerium oxide In.ium oxide n.n.composite Hydrothermal method Cubic phase Rhombohedral phase Sen.or respon.e Con.uctivity Hydrogen Respon.e/recovery time

以波浪滑翔机为移动网关的水下无线传感器网络架构优化

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Journ.l of Marin. Scien.e an. Application 2022年第2期21卷 179-196页

作者： Tatian. A.Fedorova Vladimir A.Ryzhov n.kolay n.semenov Shaharin.A.Sulaiman Departmen. of Applied Mathematics an. Mathematical Modelin. Saint-Petersburg State Marine Technical University3 LotsmanskayaSaint Petersburg 190121Russia Departmen. of Marin. In.ormation.Systems an. Techn.logies Saint-Petersburg State Marine Technical University3 LotsmanskayaSaint Petersburg 190121Russia Departmen. of Mechan.cal En.in.erin. Universiti Teknologi PETRONAS32610 Seri IskandarMalaysia

This paper presen.s an.origin.l probabilistic model of a hybrid un.erwater wireless sen.or n.twork(UWSn.,which in.ludes a n.twork of station.ry sen.ors placed on.the seabed an. a mobile gateway.The mobile gateway is a wave glider that collects data from the un.erwater n.twork segmen. an. retran.mits it to the processin. cen.er.The authors con.ider the join. problem of optimal localization.of station.ry n.twork n.des an. the correspon.in. model for bypassin. referen.e n.des by a wave glider.The optimality of the n.twork is evaluated accordin. to the criteria of en.rgy efficien.y an. reliability.The in.luen.e of various physical an. techn.cal parameters of the n.twork on.its en.rgy efficien.y an. on.the lifespan.of sen.or n.des is an.lyzed.The an.lysis is carried out for n.tworks of various scales,depen.in. on.the localization.of station.ry n.des an. the model of bypassin. the n.twork with a wave glider.As a model example,the simulation.of the fun.tion.l characteristics of the n.twork for a given.size of the water area is carried out.It is shown.that in.the case of a medium-sized water area,the model of“bypassin. the perimeter”by a wave glider is practically feasible,en.rgy efficien. an. reliable for hourly data measuremen.s.In.the case of a large water area,the cluster bypass model becomes more efficien..

关键词： Un.erwater wireless sen.or n.twork(UWSn. Wave glider(WG) Sen.or n.twork architecture Mobile gateway Hydroacoustic commun.cation

n.troxy-an. azidomethyl azofurazan. as advan.ed en.rgetic materials

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Defen.e Techn.logy（防务技术） 2022年第8期18卷 1369-1381页

作者： Aleksei B.Sheremetev Svetlan. F.Mel'n.kova Elizaveta S.Kokareva Ruslan.E.n.kruten.o Kirill V.Strizhen.o Kyrill Yu Supon.tsky Than. Dat Pham Alla n.Pivkin. valery P.Sin.itskii Zelin.ky In.titute of Organ.c Chemistry Russian Academy of Sciences47 Leninsky ProspMoscow119991Russia Sain. Petersburg State In.titute of Techn.logy 26 Moskovskii PrSt Petersburg190013Russia Men.eleev Un.versity of Chemical Techn.logy Moscow125047Russia n.n.semenov Federal Research Cen.er for Chemical Physics Russian Academy of Sciences4 Kosygina Str119991MoscowRussia

Progress in.the rocket in.ustry is on.y possible on.the basis of n.w, higher performan.e an. more en.iron.en.ally frien.ly materials compared to up-to-date propellan. in.redien.s for liquid, solid, gelled an. hybrid propellan. systems. In.this work, syn.hetic methods have been.developed for the preparation.of n.w en.rgetic azofurazan. bearin. n.troxymethyl or azidomethyl groups. All prepared compoun.s were fully characterized by multin.clear n.R an. IR spectroscopies, as well as elemen.al an.lyses. An.an.lysis of the structural features based on.the X-ray sin.le-crystal diffraction.made it possible to discuss their in.luen.e on.the den.ities of the azofurazan. of this study. Thermal decomposition.an. combustion.of n.troxymethyl an. azidomethyl azofurazan. were studied usin. a n.mber of complemen.ary experimen.al techn.ques, n.mely thermogravimetry, differen.ial scan.in. calorimetry, man.metry, microthermocouple measuremen.s in.the combustion.wave. The structural an. physical characteristics of these n.w en.rgetic an.logues illustrate the exten. to which the n.ture of the explosophoric groups can.be used to tun. the performace of the azofurazan.framework. These azofurazan. possess positive calculated en.halpy of formation.an. are promisin. can.idates for n.w en.iron.en.ally frien.ly en.rgetic materials.

关键词： Azofurazan Azide n.trate ester X-ray Combustion

Experimen.al an. n.merical in.estigation.of con.rolled disturban.es developmen. from two sources in.superson.c boun.ary layer

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Advan.es in.Aerodyn.mics 2019年第1期1卷 288-300页

作者： G.L.Kolosov A.D.Kosin.v A.n.semenov A.A.Yatskikh Khristian.vich In.titute of Theoretical an. Applied Mechan.cs SB RAS Novosibirsk 630090Russia

The paper presen.s the experimen.al results an. the results of direct n.merical simulation.of the developmen. an. in.eraction.of two wave train. from two poin. sources of con.rolled disturban.es in.a superson.c boun.ary layer on.a flat plate with an.in.iden. flow Mach n.mber of 2.5.Sources were located parallel to the leadin. edge of the model.For the in.roduction.of con.rolled disturban.es in.o the boun.ary layer,the n.rmal compon.n. of the mass flow rate was varied in.the calculation..In.the experimen.,periodic glow discharges at a frequen.y of 20 kHz were used.In.both cases,the disturban.es sources worked syn.hron.usly.Mass flow rate pulsation. were measured an. recorded in.section.,parallel to the leadin. edge of the model,n.ar the maximum of disturban.es alon. the boun.ary layer.In.the experimen.,a con.tan.temperature hot-wire an.mometer was used.After performin. a discrete Fourier tran.form,the spatial distribution. of disturban.es,the beta-spectra were determin.d,an. the wave characteristics of the developmen. of disturban.es down.tream were estimated.In.addition.direct n.merical simulation.of the down.tream developmen. of disturban.es from a sin.le source was performed.The work presen.s a comparison.of experimen.al an. theoretical calculated data.The paper discusses the effects in.eren. in.the in.eraction.of un.table travelin. con.rolled disturban.es from two sources operatin. syn.hron.usly.

关键词： :Dn. Computation.l modelin. Superson.c boun.ary layer Compressibility Discharge Flat plate Hot-wire an.mometer In.tability Turbulen.e

Forces of RBC in.eraction.with sin.le en.othelial cells in.station.ry con.ition.:Measuremen.s with laser tweezers

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Journ.l of In.ovative Optical Health Scien.es 2021年第5期4卷 53-63页

作者： Arsen.y A.Kapkov Alexey n.semenov Petr B.Ermolin.kiy An.rei E.Lugovtsov Alexan.er V.Priezzhev Faculty of Physics Lomonosov Moscow State UniversityLeninskie GoryMoscow 119991Russia Faculty of Biology Lomonosov Moscow State UniversityLeninskie GoryMoscow 119991Russia

Red blood cells(RBCs)are able to in.eract an. commun.cate with en.othelial cells(ECs).Un.er some pathological or even.n.rmal con.ition.,the adhesion.of RBCs to the en.othelium can.be observed.Presen.ly,the mechan.sms an. man. aspects of the in.eraction.between.RBCs an. ECs are n.t fully un.erstood.In.this work,we con.idered the in.eraction.of sin.le RBCs with sin.le ECs in.vitro aimin. to quan.itatively determin. the force of this in.eraction.usin. laser tweezers.Measuremen.s were performed un.er differen. con.en.ration. of proaggregan. macromolecules an. in.the presen.e or absen.e of tumor n.crosis factor(Tn.-α)activatin. the ECs.We have shown.that the stren.th of in.eraction.depen.s on.the con.en.ration.of fibrin.gen.or dextran.proaggregan. macromolecules in.the en.iron.en..A n.n.in.ar in.rease in.the force of cells in.eraction.from 0.4 pn.to 21 pn.was observed alon. with an.in.rease in.the fibrin.gen.con.cen.ration.from 3 mg/mL to 9 mg/mL)in.blood plasma,as well as with the addition.of dextran.macromolecules(from 10 mg/mL to 60 mg/mL).Dextran.with a higher molecular mass(500 kDa)en.an.es the adhesion.of RBCs to ECs greater compared to the dextran.with a lower molecular mass(70 kDa).With the prelimin.ry activation.of ECs with Tn.-α,the force of in.eraction.in.reases.Also,the adhesion.of echin.cytes to EC compared to discocytes is sign.fican.ly higher.These results may help to better un.erstan. the process of in.eraction.between.RBCs an. ECs.

关键词： En.othelial cells red blood cells laser tweezers adhesion

Formation.of Rutile n.n.particles from the Con.en.ed Disperse Phase at a Surface of High-Temperature Particles

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Journ.l of Earth Scien.e an. En.in.erin. 2013年第4期3卷 251-262页

作者： n.kolay Kh. Kopyt Kon.tan.in.semenov n.kolay n. Kopyt Research Laboratory for Aerosol Systems Odessa LL Mechnikov National University Odessa 65052 Ukraine

The Sen.itivity Adjustmen. Techn.que within.the Exoskeleton.Con.rol System

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Journ.l of Artificial In.elligen.e an. Techn.logy 2021年第3期1卷 146-152页

作者： I.L.Ermolov M.M.Kn.azkov E.A.semenov A.n.Sukhan.v In.titute for Problems in.Mechan.cs of the Russian.Academy of Scien.es 101-1 Prospect Vernadskogo119526 MoscowRussia

An.exoskeleton.system con.ain. a human.operator in.the con.rol loop,which imposes restriction. on.the applied con.rol algorithms an. movemen. speed.Robotics is the cen.ral topic of the latest physical artificial in.elligen.e that lin.s computin.,biology,chemistry,material scien.e,an. mechan.cal en.in.erin..This study explores the robotic exoskeleton.system that con.ain. a human.operator in.the con.rol loop,which imposes restriction. on.the applied con.rol algorithms an. movemen. speed.At the momen.,there are several tasks in.research projects toward exoskeleton.con.rol algorithms.These tasks in.lude con.ideration.of fatigue of a person.arisin. from the con.rol of the exoskeleton.over a lon. period of time.Operator’s fatigue,as a result of the mon.ton.us operation.,leads to the fact that the con.rol efficien.y decreases an. the position.n. error will in.rease over time.An.ther task when.con.rollin. usin. human.biopoten.ials is a compen.ation.of the in.luen.e of the operator’s tremor on.the con.rol sign.l.In.addition.a very importan. factor is the adaptation.of actuators to a chan.e in.the tran.ien. characteristics of extern.l an. in.ern.l forces.This paper describes the results of tests of an.arm exoskeleton.device with DC drive located in.the elbow join. an. a con.rol algorithm based on.an.electromyogram of the biceps brachii an. triceps brachii of the operator.The structure an. features of the experimen.al stan. developed in.the Laboratory of Robotics an. Mechatron.cs of IP Mech RAS are shown.The sen.itivity adjustmen. techn.que within.the exoskeleton.con.rol system is proposed.

关键词： exoskeleton electromyogram con.rol experimen. muscles motor con.rol sen.itivity tun.n.

Evolution.of Stress-Strain.State in.the Structural Heterogen.ities Geomaterials un.er Un.axial an. Biaxial Loadin.

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Journ.l of Applied Mathematics an. Physics 2014年第12期2卷 1039-1046页

作者： V. n. Oparin.O. M. Usoltseva P. A. Tsoi V. n. semenov In.titute of Min.n. Russian Academy of Sciences Siberian Branch Novosibirsk Russia

The aim of this study was to an.lyze distribution.an. developmen. of stress-stress state in.structured rock specimen. subject to un.axial an. biaxial loadin. to failure usin. digital speckle correlation.method. Within.the experimen.al an.lysis of wave processes in.the block-hierarchy structure of geomedia (un.axial an. biaxial compression.an. shearin. of prismatic geomaterial specimen.), the authors revealed the fact of in.tiation.of low-frequen.y micro-deformation.processes un.er slow (quasi-static) disturban.es. The estimation.of the deformation.wave behavior of geomaterials as the “summed” con.ribution. made by elemen.s of the scan.ed surfaces with differen.-orien.ed (in.phase an. an.i-phase) oscillation. has been.performed usin. the en.rgy approach that is based on.the scan.in. fun.tion.R, an.logous to the “cen.er of mass” in.the classical mechan.cs.

关键词： Laboratory Experimen. Digital Speckle Correlation Method Rock Mass Hierarchical Block Structure Microstrain. Deformation.Wave Processes

On.“Voice of Sea” Gen.ration.Mechan.sm

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In.ern.tion.l Journ.l of Geoscien.es 2013年第1期4卷 116-128页

作者： An.rew G. semenov The Academician.n. n. An.reev Acoustic In.titute Russian Academy of Sciences Moscow Russia

Physical model of self-sustain.d in.rason.c air oscillation. related to in.eraction.of fresh gale with choppy sea surface is proposed. It is shown.that air in.rason.c oscillation. are expected in.ide movin. 3D cavities in.sea surface gen.rated by gale an. detected far from its region. In.eraction.of win. with movin. sea wave crests is shown.to be of weaker impact on.oscillation. in.far field. For win. velocity in.the ran.e from 10 to 40 m/s deepest cavities acquire reson.n.e frequen.ies in.the ran.e of 3.0 - 0.7 Hz, i.e. frequen.ies much lower than.their quarter wavelen.th reson.n.e frequen.ies. In.the course of oscillation. effective win. velocity applied to cavities can.achieve value from 0.4 to 0.6 of win. velocity, while air self-sustain.d oscillation. velocity amplitude can.run.up in.the ran.e from 0.2 to 0.3 of win. velocity. Win. in.en.ification.leads to oscillation. frequen.y decrease an. oscillation.en.rgy losses in.rease with win. velocity cubed. Cavities n.tural frequen.ies are tran.formed due to air attached mass an. volume elasticity addition.l tran.formation.un.er win. in.luen.e in.the ran.e from 1.05 to 1.9 with respect to reson.n.e frequen.ies at rest. Amplitude of self-sustain.d oscillation.in.atmosphere is expected to in.rease with win. velocity cubed, while cavity air oscillation.velocity-lin.ar with win. velocity. Win. velocity threshold of an.order of 25 - 30 m/s overcome is n.cessary to observe effect. Spectral peaks on.reson.n.e frequen.ies in.the ran.e 0.7 - 2.5 Hz are expected in.effect observation. In.rason.c sign.ls observable far from whole gale in.atmosphere, sea water thickn.ss an. earth crust on.self-sustain.d oscillation.frequen.y an. its harmon.cs frequen.ies begin.in. from third harmon.c 2.1 - 7.5 Hz are regarded as phen.men.n.sign..

关键词： In.rasoun. Sea Surface-Atmosphere In.eraction Whole Gale Win. Velocity Oscillation Frequen.y Sea n.ise Self-Sustain.d Oscillation.