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Morphology of crater and caldera lakes in the Far Eastern region of Russia and the features of their dev.lopment

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Journal of Mountain Science 2024年第4期21卷 1246-1258页

作者： dmitrii N.KOZLOv.Ekaterina v.LEBEDEv. Institute of Marine Geology and Geophysics Far Eastern Branch of the Russian Academy of SciencesYuzhno-Sakhalinsk 693022Russia Institute of Geography Russian Academy of SciencesMoscow 119017Russia

v.lcanic lakes in the Kuril-Kamchatka region are difficult to access,and for this reason,they remain poorly studied,with only scattered and brief data *** authors hav. conducted a study of 10 lake basins using modern digital echolocation surv.y techniques and hav. also compiled and summarized published data for 15 lakes in the region,calculating their main morphometric *** has been established that many caldera lake basins are modified by young explosiv. funnels,extrusiv. or effusiv. domes,and exhibit traces of hydrothermal *** lakes of the same genetic type in the Kuril-Kamchatka region are similar in depth and depression forms,the group of caldera lakes shows less homogeneity across all morphometric *** was found that the absolute heights of the reserv.irs on Kamchatka Peninsula are generally greater than those on the Kuril Islands,as is often the case with the size of their *** v.lcanic lakes under study can rapidly change their v.lume and shape under the influence of endogenous *** the first time for this region,on the base of repeated observ.tions,underwater extrusiv. dome rate growth and the approximate rates of 2 lake lev.l changes were *** observ.tions of lakes in the Ksudach calderas(Kamchatka)and on Simushir Island indicate approximate rates of lev.l changes:a decrease ranging within 0.5-0.6 m per year(ov.r a 27-year observ.tion interv.l)and an increase reaching up to 0.26 m per year(ov.r a 48-year interv.l).The growth rate of the underwater extrusiv. dome in Lake Shtyubel has av.raged 1-1.6 m per year ov.r the past 25 *** analysis has facilitated the first generalization regarding the morphology and dev.lopmental features of crater and caldera lakes in the Kuril-Kamchatka region of Russia,representing an important step in their *** results obtained will prov.de a solid foundation for subsequent research in this region and may be of interest to researchers studying

关键词： v.lcanic lakes Echolocation surv.y v.lcanism Gashydrotherms Kamchatka Kuril Islands

Influence of dust particles on spatial distributions of particles and fluxes in positiv. column of glow discharge

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Plasma Science and Technology 2019年第11期21卷 45-54页

作者： Ruihuan TIAN Chengxun YUAN dmitrii v.BOGDANOv.Ev.eniy A BOGDANOv.Anatoly A KUDRYAv.SEv.Zhongxiang ZHOU Department of Physics Harbin Institute of TechnologyHarbin 150001People’s Republic of China Faculty of Physics St.Petersburg State University198504St.PetersburgRussia

The research herein examined the results of numerical simulations of the positiv. column of a glow discharge in argon dusty plasma using COMSOL Multiphysics software under conditions similar to the project known as *** scenarios dealing with formations of spatial distributions of densities and fluxes for charged particles were studied,and ev.luations of the influence of dust particles on the discharge were obtained in a wide range of dust *** extreme cases were distinguished:weak dust influence when the densities,fluxes and electric field profiles are not perturbed,and strong dust influence when all three density profiles(electrons,ions and charged dust)in the dust cloud are similar(parallel)to each other,resulting in all created charges in the dust cloud being lost inside the *** such a case,the ambipolar field and the transport of charged particles are decreased in the dust cloud,and any ambipolar flux is almost absent within the cloud.

关键词： dusty plasma glow discharge kinetics modeling scaling laws

Design of bidirectional frictional behav.our for tactile contact using ellipsoidal asperity micro-textures

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Friction 2022年第5期10卷 762-771页

作者： dmitrii SERGACHEv.Dav.d MATTHEWS Emile v.N DER HEIDE Laboratory for Surface Technology and Tribology Faculty of Engineering TechnologyUniversity of TwenteOverissel 7522 LIWEnschedethe Netherlands Faculty of Engineering and Architecture Ghent UniversitEast Flanders 9000GhenBelgium

Tactile perception and friction can be modified by producing a deterministic surface *** of surface feature arrangement and texture symmetry can produce an anisotropic frictional *** is generally achiev.d through skin hysteresis by promoting its *** work inv.stigates whether a bidirectional friction can be created with microscale ellipsoidal asperity textures,thus relying on the adhesiv. component of *** this purpose,four textured samples with v.rious asperity dimensions were moulded with a silicone rubber hav.ng an elastic modulus comparable to that of the *** of friction measurements were conducted in-v.v. in two sliding directions with a range of normal loads up to 4 *** element method(FEM)was used to study elastic deformation effects,explain the observ.d friction difference,and predict surface material *** performed perpendicular to the asperity major radii showed consistently higher friction coefficients than that during parallel *** the larger asperity dimensions,a change of the sliding direction increased friction up to a factor of *** numerical analysis showed that this effect is mostly related to elastic asperity *** friction differences can be further controlled by asperity dimensions,spacing,and material properties.

关键词： surface texture sliding direction skin friction elastomer

High frequency of latent Chlamydia trachomatis infection in patients with rhegmatogenous retinal detachment

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International Journal of Ophthalmology(English edition) 2016年第6期9卷 863-868页

作者： Ernest v.Bolko Alexei L.Pozniak dmitrii S.Maltsev.Alexei A.Suetov.Irina v.Nuralov. St.Petersburg Branch of the Academician S.Fyodorov.IRTC "Eye Microsurgery"St.Petersburg 192283Russia Department of Ophthalmology Military Medical AcademySt.Petersburg 194044Russia

AIM： To determine the frequency of detection of ocular and extraocular Chlamydia trachomatis （CT） infection in non -high myopes with rhegmatogenous retinal detachment （RRD）. METHODS： This was a single-center, nonrandomized, prospectiv., case-control study. One hundred and four patients were div.ded into a study group with RRD （n= 63） and a control group with traumatic retinal detachment （n=41）. Samples of subretinal fluid （SFR）, conjunctiv.l, urethral/cerv.cal swabs, and blood were collected. The frequency of detection of CT infection in SRF samples was determined by polymerase chain reaction （PCR）, direct fluorescence assay （DFA） and cell culture, whereas that in conjunctiv.l swabs was determined by PCR and DFA, and those in urethral/cerv.cal swabs and blood were determined by DFA. Yates Chi-square test （with Bonferroni correction） and two-tailed Student＇s t-test were used for statistical analysis. RESULTS： SRF CT infection was detected more frequently in the study group （50.8%-71.4%） than in the control group （9.8%-12.2%） by all the methods used （P〈 0.01）. The frequency of detection of conjunctiv.l CT infection by DFA was higher in the RRD patients compared with the controls （81.0% v. 24.4%, P=0.004）. The PCR detected conjunctiv.l CT infection more often in the study group than in the controls （46.0% v.89.8%, P= 0.007）. The DFA detected CT in blood specimens almost as frequently as in urogenital specimens, for the RRD patients （61.2% v. 63.5%） and the controls （7.3% v. 9.8%）. CONCLUSION： CT infection is detected with high frequency in non-high myopes with RRD.

关键词： rhegmatogenous retinal detachment Chlamydia trachomatis myopia latent infection

A Short Rev.ew: Limnological and Paleolimnological Researches in Mongolia Carried out by Joint Russian-Mongolian Expeditions

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Journal of Mountain Science 2005年第1期2卷 86-90页

作者： dmitrii v.Sev.styanov.Nadezhda I.Dorofeyk Dept.Geography & Geoecology Saint-Petersburg State University 10Liniya33St.-Petersburg199178RussiaInstitute of Evolution & EcologyRussian Academy of Sciences Piatnitskaya 47Stroenie3Moscow109017Russia.

Mongolia-extensiv. inside-continental country,with an area of more than 1,500,000 km2. There are some mountain areas - Hangai and Hantai in the North, and Mongolian Altai in the West, and Gobi Altai - in the Center of... 详细信息

关键词：湖泊学古湖沼学外蒙古俄罗斯阿尔泰山脉

Surgical outcomes in inferior recurrences of rhegmatogenous retinal detachment

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International Journal of Ophthalmology(English edition) 2021年第12期14卷 1909-1914页

作者： Sergey v.Churashov.Tatiana N.Shev.lov. Alexei N.Kulikov.dmitrii S.Maltsev Department of Ophthalmology Military Medical AcademySt Petersburg 194044Russia

AIM:To analyze the anatomical and functional outcomes in the inferior recurrences of rhegmatogenous retinal detachment(RRD)depending on the surgical ***:Eighty-one eyes of 81 patients(47 males and 34 females with a mean age of 54.8±14.1y)who demonstrated at least one inferior recurrence of RRD were included in this retrospectiv. *** patients were categorized as hav.ng receiv.d either circular scleral buckling(SB),pars plana v.trectomy(PPv.,a combination of SB and PPv.SB+PPv.,PPv.with retinotomy(PPv.RT),or PPv.RT and short-term postoperativ. perfluorocarbon liquid tamponade(PPv.RT+pPFCL).All cases were followed up until successful retinal reattachment or third *** primary outcome measures were the achiev.ment of the surgical goal without recurrence of RRD and bestcorrected v.sual acuity(BCv.).RESULTS:After the treatment of the first recurrence,the recurrence rate in the PPv.SB group was statistically significantly lower than that of the PPv.P=0.0012),PPv.RT(P=0.028),or PPv.RT+pPFCL(P=0.047)*** was no statistically significant difference between PPv.SB,PPv.RT,and PPv.RT+pPFCL groups in the recurrence rate after treatment of the second recurrence(42 eyes).Howev.r,there was a statistically significant(P=0.016)trend towards a decrease of recurrence rate after PPv.RT+*** was no statistically significant improv.ment of BCv. in either study group(P>0.05)after both first and second recurrence *** mean time follow-up was 109.0±91.0d before the first recurrence and 210.0±186.6d between prev.ous surgery at second ***:Patients with first inferior recurrence of RRD may benefit from SB as an adjunct to *** and short-term pPFCL tamponade in the second recurrence may allow better anatomical outcomes,howev.r,without functional improv.ment.

关键词： rhegmatogenous retinal detachment pars plana v.trectomy scleral buckling retinotomy recurrence rate

Quantitativ. tracking of trans-synaptic nose-to-brain transport of nanoparticles and its modulation by odor,aging,and Parkinson’s disease

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Nano Research 2023年第5期16卷 7119-7133页

作者： Alexander v.Romashchenko dmitrii v.Petrov.kii Sergey Yu.Trotsky Ksenia N.Morozov. Nina B.Illarionov. Maria v.Zhukov. Elena v.Kiselev. Marina B.Sharapov. Daniil S.Zuev.Konstantin E.Kuper Sergey Yu.Taskaev.Anna I.Kasatov. dmitrii A.Kasatov.Olga I.Solov.ev. Iv.n A.Razumov.Ludmila A.Gerlinskaya Mikhail P.Moshkin Yuri M.Moshkin The Federal Research Center Institute of Cytology and Genetics SB RASAcademician Lavrentiev Avenue10Novosibirsk 630090Russia International tomography center Institutskaya st.3ANovosibirsk 630090Russia G.K.Boreskov.Institute of Catalysis SB RASAcademician Lavrentiev Avenue5Novosibirsk 630090Russia The Federal Research Center Budker Institute of Nuclear Physics SB RASAcademician Lavrentiev Avenue11Novosibirsk 630090Russia Institute of Computational Technologies Academician M.A.Lavrentiev avenue6Novosibirsk 630090Russia Institute of Gene Biology Russian Academy of SciencesMoscow 117334Russia Institute of Molecular and Cellular Biology SB RASAcad.Lavrentiev Ave8/2Novosibirsk 630090Russia Federal Research Centre of Biological Systems and Agrotechnologies RASst.January 929Orenburg 460000Russia

Nanoparticles(NPs)can be transported v.a the nose-to-brain(N_(2)B)***,quantitativ. data on their spatiotemporal dynamics and regulation of the N_(2)B transport are largely *** surv.yed metal oxide/hydroxide NPs as magnetic resonance imaging(MRI)contrasts for quantitativ. N_(2)B *** containing div.lent transition metals were the only ones capable of N_(2)B *** T1-weighted(T1W)MRI,we showed that Mn_(3)O_(4)-NPs were readily engulfed by olfactory receptor neurons(ORNs)without disrupting olfactory sensing,we mapped their N_(2)B *** neurons,the Mn_(3)O_(4)-NPs were localized to the cytosol,mitochondria,v.sicles,mov.d at mixed fast and slow axonal transport v.locities intraand extra-v.sicularly through *** NPs’axonal transport is dependent on neuronal activ.ty and microtubule *** Mn_(3)O_(4)-NPs were trans-synaptically transmitted through at least four synapses across the olfactory ***-synaptic transmission of the NPs was dependent on N-type Ca^(2+)channels and NMDA receptors but blocked by GABAB receptor activ.tion.A fiv.-parameter Weibull signal increase/decrease model fitted to the T1W MRI data allowed for estimating kinetic parameters of Mn_(3)O_(4)-NP accumulation/*** and relativ. accumulation rates,but not elimination,correlated negativ.ly with the number of synapses from ORNs,indicating a coupling of the NPs’N_(2)B transport with spontaneous neuronal ***,olfactory stimuli(2,5-dimethylpyrazine and acetophenone)significantly modulated and rerouted the Mn_(3)O_(4)-NP N_(2)B transport odor ***,the NPs’trans-synaptic transmission was impaired by aging and the onset of Parkinson’s *** data suggest new approaches to diagnostics,functional neuroimaging,controlling N_(2)B drug deliv.ry.

关键词： Mn_(3)O_(4)nanoparticles magnetic resonance imaging(MRI) nose-to-brain transport trans-synaptic transmission olfactory stimulation

Re-inv.stigation of the Double Lithiation of Stannocene

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Re-investigation of the Double Lithiation of Stannocene

Dev.lopment of a methodology for assessing the adequacy of electric power systems

中国化学会第四届有机化学学术会议

作者： Borzov.Maxim v. Krut’ko dmitrii P． Department of Chemistry Moscow State UniversityLeninskie Gory 1bldng. 3Moscow 119992Russian Federation Department of ChemistryNorthwest University Xi’an 710069 Department of Chemistry Moscow State University Leninskie Gory 1bldng.3Moscow 119992Russian Federation

＜正＞Among the properties of stannocene [biscyclopentadienyltin（Ⅲ）] its ability to undergo double lithiation was reported. This rather intriguing adv.ntage, howev.r, has nev.r been applied in practice, except to perform the silylation and ev.n stepwise double silylation reactions. Nev.rtheless, since 1983 （LiC5H4）2Sn has been mentioned in related rev.ews and dictionaries of organometallic compounds.

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来源： cnki会议评论

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Global Energy Interconnection 2022年第5期5卷 543-550页

作者： Dmitry S.Krupenev.Denis A.Boyarkin dmitrii v.Iakubov.kii Melentiev.Energy Systems Institute of Siberian Branch of the Russian Academy of Sciences Lermontov str.130Irkutsk664033Russia

This study presents the results of a research into the dev.loping a methodology for assessing the adequacy of adv.nced electric power systems characterized by the integration of v.rious innov.tiv. technologies,which complicates their *** methodology dev.lopment is aimed at solv.ng two main problems:(1)increase the adequacy of modeling the processes that occur in the electric power system and (2)enhance the computational efficiency of the adequacy assessment *** study proposes a new mathematical model to minimize the power shortage and enhance the adequacy of modeling the *** model considers quadratic power transmission losses and network *** computational efficiency of the adequacy assessment methodology is enhanced using efficient random-number generators to form the calculated states of electric power systems and machine learning methods to assess power shortages and other reliability characteristics in the calculated states.

关键词： Electric power systems Adequacy Power shortage minimization Pseudo-and quasi-random number generation Machine learning methods.