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Passive seismic in.estigation.of in.raplate earthquakes epicen.ral zon.s in.the n.rth of Russia as on. of the ways to un.erstan. their source mechan.cs

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Journ.l of Earth Scien.e 2024年

作者： konstantin Dan.lov Galin. An.on.vskaya Irin. Basakin. Eugen.a Shakhova n.talia Kapustian n.Laverov Federal Cen.er for In.egrated Arctic Research of the Ural Bran.h of the Russian.Academy of Scien.es

Studyin. the in.er structure of in.raplate earthquakes origin.tin. in.aseismic areas， which are poorly covered by seismic n.tworks or as historical earthquakes is usually the on.y way to get kn.wledge about their source mechan.sms that is partially importan. to deeper un.erstan. in.raplate geodyn.mics. The epicen.ral zon.s of earthquakes are situated in.hard-to-reach areas， so， usin. active seismic methods for such purposes is un.eason.ble or even.impossible because of high cost an. logistical difficulties. We are presen.in. a way to join.usin. differen. passive seismic methods， which allows us to get sufficien. in.ormation.about geological en.iron.en. structure for such task solution.. As an.example， we in.estigated the in.er structure of platform earthquake epicen.ral zon. origin.ted up n.rth of Russia. We used four passive seismic methods: microseismic soun.in. method， passive seismic in.erferometry， HVSR method， an. microseismic activity method. We show that passive seismic data， recoded in.the same in.tallation.an. processed by these differen. methods， can.provide sufficien. in.ormation.about structure of studied en.iron.en.， n.eded to explain.source mechan.sm. In.sum， the hypocen.er zon. is presen.ed by in.ersection.of vertical faults an. a lateral fractured zon. in.the middle crust. Results were con.irmed by comparison.with results by active seismic methods.

关键词：

Machin.-learn.d in.eratomic poten.ials for alloys an. alloy phase diagrams

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n.j Computation.l Materials 2021年第1期7卷 139-147页

作者： Con.ad W.Rosen.rock konstantin Gubaev Alexan.er VShapeev Livia B.Pártay n.am Bern.tein.Gábor Csán.i Gus L.W.Hart Departmen. of Physics an. Astron.my Brigham Young UniversityProvoUTUSA84602 Skolkovo In.titute of Scien.e an. Techn.logy Skolkovo Innovation CenterNobel Str.3Moscow 143026Russia Departmen. of Chemistry University of ReadingWhiteknightsReading RG66ADUK Departmen. of Chemistry University of WarwickCoventry CV47ALUK US n.val Research Laboratory Center for Computational Materials ScienceWashingtonDC 20375USA Departmen. of En.in.erin. University of CambridgeTrumpington StreetCambridge CB21PZUK

We in.roduce machin.-learn.d poten.ials for Ag-Pd to describe the en.rgy of alloy con.iguration. over a wide ran.e of *** compare two differen. *** ten.or poten.ials(MTPs)are polyn.mial-like fun.tion. of in.eratomic distan.es an. *** Gaussian.approximation.poten.ial(GAP)framework uses kern.l regression.an. we use the smooth overlap of atomic position.SOAP)represen.ation.of atomic n.ighborhoods that con.ist of a complete set of rotation.l an. permutation.l in.arian.s provided by the power spectrum of the spherical Fourier tran.form of the n.ighbor *** types of poten.ials give excellen. accuracy for a wide ran.e of composition.,competitive with the accuracy of cluster expan.ion.a ben.hmark for this *** both models are able to describe small deformation. away from the lattice position.,SOAP-GAP excels at tran.ferability as shown.by sen.ible tran.formation.paths between.con.iguration.,an. MTP allows,due to its lower computation.l cost,the calculation.of composition.l phase *** the fact that both methods perform n.arly as well as cluster expan.ion.but yield off-lattice models,we expect them to open.n.w aven.es in.computation.l materials modelin. for alloys.

关键词： alloy alloys phase

Gas-Phase Con.ersion.of the U(VI), Sr, Mo, an. Zr Oxides in.n.tratin. Atmosphere

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Journ.l of Applied Mathematics an. Physics 2016年第8期4卷 1475-1481页

作者： Sergey A. Kulyukhin.Yurii M. n.voin.n.talya A. Kon.valova An.rey V. Gordeev Alexey A. Besson.v Margarita P. Gorbacheva An.rey Yu. Shadrin.konstantin n. dv.eglazov Frumkin.In.titute of Physical Chemistry an. Electrochemistry Russian Academy of Sciences Moscow Russia Open.Join.-Stock Compan. Vn.In. Moscow Russia

The gas-phase con.ersion.of U3O8, MoO3, SrO, an. their mechan.cal mixtures, an. also of ZrO2 in.o water-soluble compoun.s in.the atmosphere of (n.x + vapor H2O) or Hn.3 (vapor) was studied. In.the course of gas-phase con.ersion. U3O8 an. SrO tran.form in.o water-soluble compoun.s (n.trates, hydroxon.trates), whereas MoO3 an. ZrO2 un.ergo n. chan.es. The prin.ipal possibility of separatin. U from Mo an. Zr by gas-phase con.ersion.of the oxides in.the atmosphere of (n.x + vapor H2O) or Hn.3 (vapor) was demon.trated.

关键词： Metal Oxides n.trates Gas-Phase Con.ersion n.trogen.Oxides

The Mg-carbon.te-Fe in.eraction.Implication.for the fate of subducted carbon.tes an. formation.of diamon. in.the lower man.le

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Geoscien.e Fron.iers 2019年第4期10卷 1449-1458页

作者： n.ira S.Martirosyan.konstantin D. Litasov Sergey S. Loban.v Alexan.er F. Gon.harov An.on.Shatskiy Hiroaki Ohfuji Vitali Prakapen.a Sobolev In.titute of Geology an. Min.ralogy Russian Academy of ScienceKoptyuga ave.3Novosibirsk630090Russia Geophysical Laboratory Carnegie Institution for ScienceWashingtonDC20015USA n.vosibirsk State Un.versity Pirogova st.2Novosibirsk630090Russia Geodyn.mic Research Cen.er Ehime UniversityMatsuyamaEhime790-8577Japan Cen.er for Advan.ed Radiation.Sources University of ChicagoChicagoIL60637USA

The fate of subducted carbon.tes in.the lower man.le an. at the core-man.le boun.ary was modelled via experimen.s in.the MgCO3-Fe^0 system at 70-150 GPa an. 800-2600 Kin.a laser-heated diamon. an.il *** in.situ syn.hrotro n.X-ray diffraction.an. ex situ tran.mission.electron.microscopy we show that the reduction.of Mg-carbon.te can.be exemplified by:6 MgCO3+19 Fe=8 FeO+10(Mg0.6Fe^0.4)O+Fe7 C3+3 *** presen.ed results suggest that the in.eraction.of carbon.tes with Fe^0 or Fe^0-bearin. rocks can.produce Fe-carbide an. diamon.,which can.accumulate in.the D"region.depen.in. on.its carbon.to Fe *** to the sluggish kin.tics of the tran.formation.diamon. can.remain.metastable at the core-man.le boun.ary(CMB)un.ess it is in.a direct con.act with *** addition.it can.be remobilized by redox meltin. accompan.in. the gen.ration.of man.le plumes.

关键词： Deep carbon.cycle Carbon.te Carbide High pressure Redox reaction

The REMO Ocean.Data Assimilation.System in.o HYCOM(RODAS_H):Gen.ral Description.an. Prelimin.ry Results

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Atmospheric an. Ocean.c Scien.e Letters 2014年第5期7卷 464-470页

作者： Clemen.e Augusto Souza TAn.JURA Alex n.vaes SAn.An. Davi MIGn.C Leon.rdo n.scimen.o LIMA konstantin BELYAEV XIE Ji-Pin. Physics In.titute Federal University of Bahia (UFBA) Salvador 40170-280 Brazil Ocean.graphic Modelin. an. Observation.n.twork (REMO) Center for Research in Geophysics and Geology Federal University of Bahia (UFBA) Salvador 40170-280 Brazil Ocean.Scien.es Departmen. University of California Santa Cruz (UCSC) USA Graduate Program in.Geophysics Federal University of Bahia (UFBA) Salvador Brazil Shirshov In.titute of Ocean.logy Russian Academy of Sciences (SHIRSHOV/RAS) Moscow Russia In.titute of Atmospheric Physics(IAP) Chinese Academy of Sciences (CAS)

The first version.of the Brazilian.Ocean.- graphic Modelin. an. Observation.n.twork （REMO） ocean.data assimilation.system in.o the Hybrid Coordi- n.te Ocean.Model （HYCOM）（RODAS H） has recen.ly been.con.tructed for research an. operation.l purposes. The system is based on.a multivariate En.emble Optimal In.erpolation.（En.I） scheme an. con.iders the high fre- quen.y variability of the model error co-varian.e matrix. The En.l can.assimilate sea surface temperature （SST）, satellite alon.-track an. gridded sea level an.malies （SLA）, an. vertical profiles of temperature （T） an. salin.ty （S） from Argo. The first observin. system experimen. was carried out over the Atlan.ic Ocean.（78°S-50°n. 100°W-20°E） with HYCOM forced with atmospheric rean.lysis from 1 Jan.ary to 30 Jun. 2010. Five in.egra- tion. were performed, in.ludin. the con.rol run.without assimilation. In.the other four, differen. observation. were assimilated： SST on.y （A SST）; Argo T-S profiles on.y （AArgo）; alon.-track SLA on.y （A_SLA）; an. all data employed in.the previous run. （A_All）. The A_SST, A_Argo, an. A_SLA run. were very effective in.improv- in. the represen.ation.of the assimilated variables, but they had relatively little impact on.the variables that were n.t assimilated. In.particular, on.y the assimilation.of S was able to reduce the deviation.of S with respect to ob- servation.. Overall, the A_All run.produced a good an.ly- sis by reducin. the deviation.of SST, T, an. S with respect to the con.rol run.by 39%, 18%, an. 30%, respectively, an. by in.reasin. the correlation.of SLA by 81%.

关键词： ocean.data assimilation en.emble optimalin.erpolation observin. system experimen. HYCOM Atlan.ic Ocean

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气体动力学方程系统的数值方法

气体动力学方程系统的数值方法

作者： Bushuev konstantin 华东师范大学

学位级别：硕士

在现代科学和技术的许多领域中,许多问题涉及气体动力学方程组。气体动力学方程组的强烈的非线性使得数值方法成为求解方程组最有效和最通用的方法之一。本文将给出在拉格朗日坐标下对于一维气体动力学方程组系统的一类数值解法,同...

在现代科学和技术的许多领域中,许多问题涉及气体动力学方程组。气体动力学方程组的强烈的非线性使得数值方法成为求解方程组最有效和最通用的方法之一。本文将给出在拉格朗日坐标下对于一维气体动力学方程组系统的一类数值解法,同时给出几个数值算例。对气体动力学方程组的相关科学论文数量与日俱增,这个现象说明人们对于相关的科学计算领域的兴趣越来越浓厚。气体动力学方程组的数值解法目前仍是一个热门的数学研究分支。一维气体动力学方程的数值解的发展得益于文献[1],[2],[3],[4],[5]和[17],完整的概述也可以在[10]找到。一些气体动力学方程可以考虑拉格朗日方法（如爆炸的问题、气流的问题等）,所以许多的论文致力于构建拉格朗日变量的数值解法（[9],[16]）。对于一维问题,通常不只是考虑拉格朗日变量方法,也有使用拉格朗日质量坐标法（[17]）。然而拉格朗日质量坐标法对于高维问题只能用于圆柱或球对称的情况。许多有限差分方案的另一个缺点：算法仅适用于解是光滑的情况;在解不光滑处,采用的算法必须有所改变。这些问题的精确计算中,一个关键的问题是如何保证气体动力学方程组近似解在不连续处的实际逼近精度。克服困难的方法之一是在气体不连续的位置采用显格式（[4],[7]）。然而,虽然这种方法提供了必要的精度,但实现太过于复杂,特别是在多维的情况下,实际应用很难找到所有的不连续性（[1]）。另一种方法是使用同种的差分格式（[3],[14]）,其允许算法单独进行光滑解和间断解的计算。一个最基本的原则是由A. Tikhon.v和A. A. Samarskiy提出的守恒型差分格式。[18]指出,在计算中,这一原则的违反可能会导致误差,这种误差即使网格细化也不会消失的。因此,目前只讨论守恒型的差分格式。然而,同种（尽管是守恒的）差分格式经常处理以下情况：控制方程的直接近似导致间断点附近的强烈振荡（s[17]）。一种常用的消除这个缺陷的方法是引入所谓的人工粘性的项（[15]）,即在带黏性和其它系数随网格细化而趋于零的耗散过程的近似解的差分方程中引入附加项。这种方法已经在用拉格朗日变量解决气体动力学问题中广泛应用（[8]）,因为拉格朗日坐标的广泛使用实际上在显式格式中分配了接触不连续性,只保留了如冲击波的不连续性,这有利于人工粘性系数的正确选择。在欧拉和欧拉-拉格朗日变量中,最重要的参数是耗散传播接触边界。因此,由于算法格式的高要求性和现有的算法的不足,对于气体动力学方程组会出现新的差分格式。本文所提出的算法在解的光滑区域具有二阶逼近精度,并同时具有单调性。有限差分格式建立在积分插值法上,所以差分格式自然满足原问题的守恒定律。算法在不做修改的情况下可以建立不同的解。它同样可推广用于n.的情况,并进一步得到拉格朗日变量和欧拉变量的解。

关键词：

Molybden.m Carbide n.n.-Powder for Production.of Mo-99 Radion.clides

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World Journ.l of n.clear Scien.e an. Techn.logy 2012年第2期2卷 58-63页

作者： Vladimir D. Risovan. konstantin V. Rotman.v Gen.dy I. Maslakov Yury D. Gon.haren.o Grigory A. Shiman.ky Aleksan.r I. Zvir Irin. M. Smirn.va Irin. n. Kuchkin. Join. Stock Compan. State Scientific Center—Research Institute of Atomic Reactors Dimitrovgrad Russia

At presen., there are two ways to produce 99Mo in.a reactor: 1) fission.process—from U fission.product by reaction.235U (n. f) 99Mo an. 2) activation.process—by radiation.capture reaction.98Mo (n. γ) 99Mo. This paper presen.s the results of experimen.s performed with molybden.m carbide n.n.-powder to produce 99Mo. These results show the implemen.ation.of the above idea in.practice.

关键词： Carbide n.n.-Powder Molybden.m-99 Activation Process Fission Process

Spectral In.estigation. of Hybrid n.n.structures In.ludin. Modified Fulleren. C60 an. Carbazole-Derivative Fluorophore

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Advan.es in.n.n.particles 2014年第3期3卷 77-82页

作者： Evgen. P. Greben.ikov Grigory E. Adamov Valery n. Charushin.konstantin S. Levchen.o Gen.ady L. Rusin.v Evgen. V. Zin.viev Roman.A. Irgashev Pavel S. Shmelin In.titute of Organ.c Syn.hesis Urals Branch of Russian Academy of Sciences Ekaterinburg Russia OJSC “CSRIT Techn.mash” Moscow Russia

Hybrid n.n.structures in.ludin. modified fulleren. C60 an. fluorophoric (E)-2-Cyan.-3-(9-ethyl-9Н-carbazole-3-yl)-acrylic acid (cyan.acrylic acid I) were created. Spectral properties (absorption.an. lumin.scen.e spectra) of the hybrid n.n.structures were in.estigated. It was established what molecules C60 stron.ly affected spectral properties of cyan.acrylic acid I in.the hybrid n.n.structures. Lumin.scen.e quen.hin. of fluorophore an. a chan.e of lumin.scen.e features were observed in.the hybrid n.n.structures.

关键词： Hybrid n.n.structures Water-Soluble Fulleren. C60 Lumin.scen.e Quen.hin.

Fin.-n.edle aspiration.techn.que un.er en.oscopic ultrasoun. guidan.e:A techn.cal approach for Rn. profilin. of pan.reatic n.oplasms

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World Journ.l of Gastroin.estin.l On.ology 2024年第6期16卷 2663-2672页

作者： Sabin. Sherafedin.vn. Seyfedin.va Olga Aleksan.rovn. Freylikhman.Polin. Sergeevn. Sokoln.kova konstantin Aleksan.rovich Samochern.kh An.a Aleksan.rovn. Kostareva Olga Viktorovn. Kalin.n. Evgen.y Gen.adievich Solon.tsyn Research Laboratory of Digestive Can.er Almazov Medical Research CentreSaint-Petersburg 197341Russia Research Laboratory of Molecular an. Cellular Modelin. an. Gen. Therapy Almazov Medical Research CentreSaint-Petersburg 197341Russia Head of Russian.n.urosurgical In.titute n.med after Prof.A.L.Polen.va Russian Neurosurgical Institute Named after Prof.A.L.PolenovaSaint-Petersburg 191014Russia Head of In.titute of Molecular Biology an. Gen.tics Almazov National Medical Research CentreSaint-Petersburg 197341Russia Research Laboratory of Autoimmun. an. Autoin.lammatory Diseases Almazov National Medical Research CentreSaint-Petersburg 197341Russia

BACKGROUn. Early diagn.sis of pan.reatic ductal aden.carcin.ma(PDAC)has been.a lon.stan.in. *** progn.sis of patien.s with PDAC depen.s on.the stage at *** is n.cessary to iden.ify biomarkers for the detection.an. differen.iation.of pan.reatic tumors an. optimize PDAC sample preparation.procedures for Dn. an. Rn. *** molecular studies are don. usin. paraffin.embedded blocks;however,the in.egrity of Dn. an. Rn. is often.compromised in.this ***,Rn. isolated from human.pan.reatic tissue samples is gen.rally of low quality,in.part,because of the high con.en.ration.of en.ogen.us pan.reatic Rn.se activity *** To assess the poten.ial of en.oscopic ultrasoun.-guided fin.-n.edle aspiration.EUS-Fn.)to obtain.specimen. from pan.reatic n.oplasms for subsequen. Rn. molecular profilin.,in.ludin. n.xt-gen.ration.sequen.in.(n.S).METHODS Thirty-four EUS-Fn. samples were in.luded in.this study:PDAC(n.15),chron.c pan.reatitis(n.5),pan.reatic cysts(n.14),mucin.us cysts(mucin.us cystic n.oplasia/in.raductal papillary mucin.us n.oplasia)n.7,serous cystic n.oplasms n.5,an. pseudocysts n.*** material con.isted of cyst fluid an. cyst wall samples obtain.d by through-the-n.edle biopsy(TTn.).Samples were stored at -80℃ un.il *** purity(A260/230,A260/280 ratios),con.en.ration.an. in.egrity(RIn.were ***-time polymerase chain.reaction.was con.ucted on.all samples,an. small Rn. libraries were prepared from solid mass *** Rn. was successfully extracted from 29/34(85%)EUS-Fn. samples:100% pan.reatic aden.carcin.ma samples,100% chron.c pan.reatitis samples,70% pan.reatic fluid cyst samples,an. 50%TTn. *** relative expression.of GAPDH an. HPRT were obtain.d for all successfully extracted Rn. samples(n.29)in.ludin. lowquality Rn. *** con.en.ration.an. n.n.ptimal RIn.values(n. less than.3)of Rn. extracted from EUS-Fn. samples did n.t preven. n.S library *** suitability of cyst fluid samples

关键词： En.oscopic ultrasoun.-guided,fin.-n.edle aspiration Pan.reatic can.er Pan.reatic cysts Rn. extraction Through-the-n.edle biopsy n.xt-gen.ration.sequen.in.