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An.overview of progress in.Mg-based hydrogen.storage films

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Chin.se Physics B 2019年第9期28卷 68-77页

作者： Lyu Jin.he andrey M Lider Viktor n.Kudiiarov Division.for Experimen.al Physics School of Nuclear Science & Engineering National Research Tomsk Polytechnic University

Mg-based hydrogen.storage materials are con.idered to be on. of the most promisin. solid-state hydrogen.storage materials due to their large hydrogen.storage capacity an. low cost. However, slow hydrogen.absorption.desorption.rate an. excessive hydrogen.absorption.desorption.temperature limit the application.of Mg-based hydrogen.storage *** presen. paper reviews the advan.es in.the research of Mg-based hydrogen.storage film in.recen. years, in.ludin. the advan.age of the film, the fun.tion.theory of fabricatin. method an. its fun.tion.l theory, an. the in.luen.in. factors in.the techn.logical process. The research status worldwide is in.roduced in.detail. By comparin. pure Mg, Pd-caped Mg, n.n.alladium capped Mg, an. Mg alloy hydrogen.storage films, an.ideal ten.en.y for producin. Mg-based film is poin.ed out,for example, lookin. for a cheap metal elemen. to replace the high-priced Pd, compositin. Mg film with other hydrogen.storage alloy of catalytic elemen.s, an. so on.

关键词： Mg-based hydrogen storage film Pd-caped Mg film Mg alloy film in.erlayer in.ermetallic cooperative effect

Microperforation.of the human.n.il plate by radiation.of erbium lasers

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Fron.iers of Optoelectron.cs 2017年第3期10卷 299-307页

作者： andrey V. BELIKOV andrey n. SERGEEV Sergey n. SMIRn.V An.stasia D. TAVALIn.KAYA Departmen. of Laser Techn.logies an. Systems Saint-Petersburg National Research University of Information Technologies Mechanics and Optics (ITMO University) Saint Petersburg 197101 Russia

The n.il plate forms a barrier that limits the effectiven.ss of drug delivery in.the treatmen. of n.il diseases an. preven.s the outflow of fluid in.the case of subun.ual hematoma formation. Microperforation.of the n.il plate through laser radiation.can.in.rease the effectiven.ss of drug delivery an. en.ure the possibility of blood outflow. This study detected an. iden.ified the type an. threshold of effects that arise from exposin. the n.il plate to Yb,Er： Glass （λ = 1.54 μm） an. Er：YLF （λ= 2.81 μm） laser radiation. The rate an. efficien.y of n.il plate ablation.by the radiation.of these lasers were studied. The effect of the storage time of a freshly extracted n.il plate in.open.air on.its ablation.rate by Er：YLF （ λ=2.81 μm） laser radiation.was also in.estigated. The impact of the Yb,Er：Glass an. Er：YLF laser pulses on.the n.il plate caused bleachin., carbon.zation. ablation.with microcrater formation. an. microperforation. The laser en.rgy den.ities WE （thresholds） required for these effects were determin.d. The maximum ablation.rate for Yb,Er：Glass laser radiation.was 8 μm/pulse at WE = 91 ±2 J/cm2, whereas that for Er：YLF laser radiation.was 12 μm/ pulse at WE= 10.5＋0.5 J/cm2. The maximum ablation.efficien.y for Yb,Er：Glass laser radiation.was 0.1 μm/mJ at Ws = 10.5±0.5 J/cm2, whereas that for Er：YLF laser radiation.was 4.6 μm/mJ at WE = 5.3±0.3 J/cm2. The laser ablation.rate depen.s on.the storage time an. con.ition. of the freshly extracted n.il plate. For example, when.exposed to Er：YLF laser radiation. the laser ablation.rate decreased by half from the in.tial maximum value in.96 h of air storage an. return.d to the in.tial value after 1 h of storage in.distilled water.

关键词： Yb Er:Glass laser Er:YLF laser n.il plate microperforation ablation.rate ablation.efficien.y dehydration

Graviton. in.o Gravitation.l Field

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Journ.l of High En.rgy Physics, Gravitation.an. Cosmology 2018年第4期4卷 695-715页

作者： andrey n. Volobuev Departmen. of Medical Physics Samara State Medical University Samara Russia

The problems con.ected to propagation.of a gravitation.l field are con.idered. The con.tan. homogen.ous gravitation.l field is in.estigated. The law of electromagn.tic radiation.frequen.y chan.e in.this gravitation.l field is shown. On.the basis of the solution.of the Ein.tein.s equation.for a weak gravitation.l field, the flux of gravitation.l radiation.en.rgy from system of cooperatin. masses is foun.. The equation.for gravitation.l waves is foun.. On.the basis of refusal from a stresses ten.or in.o en.rgy-impulse ten.or an. use of a quan.um gravitation.l eikon.l, the quan.um form of the en.rgy-impulse ten.or in.Ein.tein.s equation.is foun.. The equation.for a graviton.propagatin. in.a gravitation.l field of a double star is foun.. Reson.n. in.eraction.of a graviton.an. a gravitation.l field of a double star are in.estigated. It is shown.that such in.eraction.allows registerin. the graviton..

关键词： A Gravitation.l Eikon.l Metric Ten.or Ein.tein.s Equation En.rgy Flux Gravitation.l Waves En.rgy-Impulse Ten.or Registration of Graviton.

Gas-phase hydrogen.tion.in.luen.e on.defect behavior in.titan.um-based hydrogen.storage material

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Progress in.n.tural Scien.e:Materials In.ern.tion.l 2017年第1期27卷 105-111页

作者： Roman.S.Laptev Viktor n.Kudiiarov Yuri S.Bordulev andrey A.Mikhaylov andrey M.Lider Departmen. of Gen.ral Physics Institute of Physics and Technology National Research Tomsk Polytechnic University

Titan.um an. its alloys are promisin. materials for hydrogen.storage. However, hydrogen.pen.tration.accompan.es the exploitation.of hydrogen.storage alloys. In.particular, hydrogen.pen.tration.an. accumulation.in.titan.um alloys chan.es their mechan.cal properties. Therefore, the research works of such materials are main.y focused on.improvin. the reversibility of hydrogen.absorption.liberation.processes, in.reasin. the thermodyn.mic characteristics of the alloys, an. augmen.in. their hydrogen.storage capacity. In.the process of hydrogen.tion.dehydrogen.tion. the formed defects both sign.fican.ly reduce hydrogen.storage capacity an. can.also be used to create effective traps for hydrogen. Therefore, the in.estigation.of hydrogen.in.eraction.with structural defects in.titan.um an. its alloys is very importan.. The presen. work, the hydrogen.in.uced formation.of defects in.the alloys of commercially pure titan.um un.er temperature gas-phase hydrogen.tion.873 K） has studied by positron.lifetime spectroscopy an. Doppler broaden.n. spectroscopy. Based on.the evolution.of positron.an.ihilation.parameters τ_f, τd, their correspon.in. in.en.ities If, Idan. relative chan.es of parameters S/S0an. W/W0, the peculiarities of hydrogen.in.eraction.with titan.um lattice defects were in.estigated in.a wide ran.e of hydrogen.con.en.ration. from 0.8at% to 32.0at%.

关键词： Titan.um Hydrogen Lattice defects Positron.an.ihilation Positron.lifetime Doppler broaden.n.

In.luen.e of frost weatherin. on.the recession.of surfaces of techn.gen.c lan.forms in.Yakutia

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Research in.Cold an. Arid Region. 2019年第4期11卷 257-266页

作者： andrey E.Meln.kov n.kolay n.Grib Meln.kov Permafrost In.titute of the Siberian.Bran.h of the Russian.Academy of Scien.es Yakutsk 677010Russia Techn.cal In.titute(bran.h)of M.K.Ammosov n.rth-eastern.Federal Un.versity Neryungri 678960Russia

The article assesses the in.luen.e of permafrost weatherin. on.the rate of destruction.of techn.gen.c lan. forms,as exhibit ed on.as illustrated by the railway emban.men. of the Amur Yakut main.in. in.the Sakha Republic(Yakutia).Studies were carried out on.a railway section.more than.375 km *** subsiden.e rate of the emban.men. slopes an. structur al excavation. was determin.d usin. laboratory methods that simulate various mechan.sms of temperature(with a tran.i tion.through 0℃)impact on.*** the first time,a quan.itative assessmen. of the in.luen.e of cryogen.c weatherin. on.the stability of the railway in.the region.belon.in. to the n.rthern.buildin. climatic zon. is *** the territory un.der con.ideration.emban.men. rocks were experimen.ally determin.d to un.ergo more than.100 freezin. an. thawin. cy cles durin. a *** the existin. climatic con.ition.,cryogen.c weatherin. actively affects the emban.men. of the railway to a depth of 30 *** of the emban.men. deformation. detected durin. field observation. are due to defects in.the in.egrity of this particular *** size of the disin.egratin. layer of particular types of rock comprisin. the rail way emban.men. has been.established as reachin. 10 cm per *** 5 years followin. the formation.of emban.men.s comprisin. the upper structure of the railroad tracks,the physical an. mechan.cal properties of rocks,which in.tially had a ten.ile stren.th for un.axial compression.in.the ran.e of 40 70 MPa,were reduced by more than.50%.Accordin. to the authors,the establishmen. of region.l cryohypergen.sis features is un.versal in.n.ture an. can.be applied to solvin. a wide ran.e of tasks related to the assessmen. an. prediction.of the degree of cryogen.c tran.formation.of rocks havin. differen. structural properties.

关键词： cryogen.c weatherin. emban.men. railway subsiden.e rate Republic of Sakha Yakutia

Gen.ration.of dual an. quad‑optical frequen.y combs in.the in.ected radiation.free mode‑locked frequen.y‑shifted feedback laser

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Fron.iers of Optoelectron.cs 2023年第3期16卷 43-56页

作者： Sergey n.Man.sevich Ekaterin. I.Kostyleva andrey n.Dan.lin.Vladimir S.Khorkin Physics Departmen. M.V.Lomonosov Moscow State UniversityMoscow 119991Russia Russian.Quan.um Cen.er(RQC) Skolkovo 143026Russia

The results of an.optoelectron.c system—frequen.y-shifted feedback(FSF)laser experimen.al examin.tion.are *** con.idered FSF laser is seeded on.y with optical amplifer spon.an.ous emission.ASE)an. operates in.the mode-locked regime,whereby the output radiation.is sequen.e of short pulses with a repetition.rate determin.d by the delay time in.its optical feedback *** the frequen.y domain.the spectrum of such a pulse sequen.e is an.optical frequen.y comb(OFC).These OFCs we call *** con.ider the possibility of tun.ble acousto-optic(AO)dual an. quad-comb frequen.y spacin. down.on.ersion.in.the FSF laser seeded with ASE an. operatin. in.the mode-locked *** examin.d system applies a sin.le frequen.y shiftin. loop with sin.le AO tun.ble flter as the frequen.y shifter that is fed with several radio frequen.y sign.ls *** in.tial OFCs with frequen.y spacin. of about 6.5 MHz may be obtain.d in.the wide spectral ran.e an. their width,en.elope shape an. position.in.the optical spectrum may be *** dual-combs are obtain.d with a pair of in.tial OFCs aroused by two various ultrasoun. waves in.the acousto-optic tun.ble flter(AOTF).The dual-combs frequen.y spacin. is determin.d by the frequen.y diferen.e of the sign.ls applied to the AOTF piezoelectric tran.ducer an. can.be tun.d *** quad-combs are obtain.d with three in.tial OFCs,formin. a pair of dual-combs,appearin. when.three ultrasoun. frequen.ies feed the AOTF *** quad-combs frequen.y spacin. is defn.d by the diferen.e between.the frequen.y spacin. of ***-combs with more than.5000 spectral lin.s an. tun.ble frequen.y spacin. are *** successive frequen.y down.on.ersion.gives the possibility to reduce the OFC frequen.y spacin. form several MHz for in.tial OFC to ten. of kHz for quad-combs.

关键词： Frequen.y-shifted feedback laser Optical frequen.y combs Acousto-optics Dual-combs Quad-combs

Sociability an. pair-bon.in. in.gerbils: a comparative experimen.al study

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Curren. Zoology 2019年第4期65卷 363-373页

作者： andrey V. TCHABOVSKY Ludmila E. SAVIn.tsKAYA n.talia L. OVCHIn.IKOVA Alexan.ra SAFOn.VA Olga n. ILCHEn.O Svetlan. R. SAPOZHn.KOVA n.n. A. VASILIEVA Departmen. of Vertebrate Zoology A.N. Severtsov Institute of Ecology and Evolution Moscow Russia Laboratory for Population.Ecology Lomonosov Moscow State University Russia Moscow Zoo Russia

In.a study of gerbils with con.rastin. social an. matin. systems (group-livin. mon.gamous Mon.olian.gerbil Merion.s un.uiculatus, solitary n.n.erritorial promiscuous midday jird M. meridian.s, an. solitary territorial promiscuous pale gerbil Gerbillus perpallidus), we employed part n.r pref ere n.e tests (PPts) to assess amon.-species variation.in.sociability an. pair-bon.in. pattern. an. tested whether the n.ture of con.act between.in.ividuals: direct con.act (DC) versus n.n.irect con.act (n.C) affected our results. We measured male pref ere n.es as the time: 1) spe n. alon., 2) with familiar (partn.r), an. 3) un.amiliar (stran.er) female in.the 3-chambered apparatus. Gerbil species differed stron.ly in.sociability an. male partn.r preferen.es. The time spen. alon. was a reliable in.icator of species sociability in.epe n.en. of the n.ture of con.tact, whereas the pattern.an. level of betwee n.species differe n.es in.male partn.r preferen.es depen.ed on.con.tact type: DC PPts, un.like n.C-tests, discrimin.ted well betwee n.mon.gamous an. promiscuous species. In.the DC-tests, stran.er-directed aggression.an. stran.er avoidan.e were observed both in.the highly social mon.gamous M. un.uiculatus an. the solitary territorial promiscuous G. perpallidus, but n.t in.the n.n.territorial promiscuous M. meridian.s. In.M. un.uiculatus, stran.er avoidan.e in.the DC-tests in.reased the time spen. with the partn.r, thus providin. eviden.e of a partn.r preferen.e that was n.t foun. in.the n.C-tests, whereas in.G. perpallidus, stran.ger avoidan.e in.creased the time spe n. alon.. This first comparative experimen.al study of partn.r prefere n.es in.gerbils provides n.w in.sights in.o the in.terspecific variation.in.gerbil sociality an. matin. systems an. sheds light on.behavioral mechan.sms un.derlyi n. social fidelity an. pair-b on.din..

关键词： gerbils matin. systems partn.r preferen.e test partn.r fidelity social systems stran.er-directed aggression

n.n.particles Tran.port in.Ceramic Matriсes: A n.vel Approach for Ceramic Matrix Composites Fabrication

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Journ.l of Modern.Physics 2013年第8期4卷 1041-1049页

作者： andrey n. rybyan.ts An.stasia A. n.umen.o Southern.Federal Un.versity Rostov on Don Russia

The results of practical implemen.ation.of a n.w method for porous piezoceramics, an. ceramic matrix piezocomposites fabrication.were presen.ed. The method was based on.n.n.particles tran.port in.ceramic matrices usin. a polymer n.n.gran.les coated or filled with a various chemicals, with successive porous ceramics fabrication.processes. Differen. types of polymer microgran.les filled an. coated by metal-con.ain.n. n.n.particles were used for a pilot samples fabrication. Polymer microgran.les were examin.d usin. tran.mission.an. scan.in. electron.microscopy as well as by EXAFS an. X-ray emission.spectroscopy. Pilot samples of n.n.- an. microporous ceramics an. composites were fabricated usin. differen. piezoceramics composition. (PZT, lead potassium n.obate an. lead titan.te) as a ceramic matrix bases. Resultin. ceramic matrix piezocomposites were composed by super lattices of closed or open.pores filled or coated by n.n.particles of metals, oxides, ferromagn.tics etc. embedded in.piezoceramic matrix. Dielectric an. piezoelectric parameters of pilot samples were measured usin. piezoelectric reson.n.e an.lysis method. n.w family of n.n.- an. microporous piezoceramics an. ceramic matrix piezocomposites are characterized by a un.que spectrum of the electrophysical properties un.chievable for stan.ard PZT ceramic composition. an. fabrication.methods.

关键词： n.n.particles Polymer n.n.gran.les Porous Ceramics Ceramic Matrix Composites

An.ular Distribution.of Photoelectron. Durin. Irradiation.of Metal Surface by HElectromagn.tic Waves

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Journ.l of Modern.Physics 2011年第8期2卷 780-786页

作者： andrey n. Volobuev Eugen. S Petrov 不详

An.ular distribution.of photoelectron. is in.estigated durin. the in.er photoemissive effect for two varian.s: quan.um of light basically reveals wave an. basically corpuscular properties in.eractin. with orbital electron. Distin.tion.in.an.ular distribution.of photoelectron. for these varian.s is demon.trated. An.ular distribution.in.the secon. varian. is in.estigated for the n.n.elativistic an. relativistic cases.

关键词： Photoeffect Photoelectron. An.ular Distribution Ein.tein.s Formula