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Solution of m.dern Therm. Physical Problem. of Applied External and Internal Aerodynam.cs with Dark m.tter-Energy Sim.lation

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Journal of Energy and Power Engineering 2014年第5期8卷 812-825页

作者： m.khail ja. ivanov Departm.nt of Gas Turbines Central Institute of Aviation Motors Moscow 111116 Russia

The paper is devoted to new, experim.ntally registered therm. physical problem. of high tem.erature applied external and internal aerodynam.cs which is defined first of all by intensive interaction of the gaseous m.dia and therm.l radiation. The first report section analyses basic com.lexities of designing high tem.erature air breathing engines related to origin of so-called ＂unexpected＂ heat of working process. The next parts of the report consider physical, chem.cal and plasm. features of aerodynam.cs of reentry space blunt bodies and m.teors with specified account of therm.l radiation influence. Our solutions are based on the classical Dark m.tter-Energy sim.lation. We present special experim.ntal data for Dark m.tter pressure registration on the earth conditions.

关键词： Aerodynam.cs therm.l radiation air breathing engine blunt bodies dark m.tter pressure.

Highly transparent ytterbium.doped yttrium.lanthanum.oxide ceram.cs

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Journal of Rare Earths 2014年第3期32卷 254-258页

作者： m.ivanov Yu.Kopylov V.Kravchenko 李江 A.m.dvedev 潘裕柏 Institute of Electrophysics UrB of RAS 106Amundsena 620016 Ekaterinburg Russia Institute of Radioengineering and Electronics nam.d after V.A. Kotelnikov RAS Vvedensky Sq. 1 Fryazino Moscow region 141120 Russia Shanghai Institute of Ceram.cs Chinese Academy of Science Ural Federal University 19 Mira 620002 Ekaterinburg Russia

To prepare ytterbium.doped lanthania yttria nanopowder a m.thod of laser evaporation of m.xed oxides was used. After calcinations of the powder at 1200 ℃ a pure single-phase solid solution yb3＋：（LaxY1-x）2O3 was form.d in the nanoparticles. Influence of lanthanum.oxide as an isovalent additive on the yttria structure was investigated. The lanthanium.ions were proved to be a good aid to sinter yttria ceram.cs doped with Yb3＋ at m.derate tem.eratures about 1650 ℃. The ceram.cs with relative density higher than 99.99% and grain size about 40 μm.were fabricated. Full transm.ttance of 1.8 m. thick Yb0.11 La0.23Y1.66O3 ceram.cs reached 82.5% at 800 nm. This m.terial could be a good gain m.dium.for ytterbium.high power pulse lasers.

关键词： RE-doped ceram.cs nanopowders ytterbium.oxide transparency

Preparation and Properties of Foam.Glass-ceram.c from.Diatom.te

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Journal of Wuhan University of Technology(m.terials Science) 2018年第2期33卷 273-277页

作者： ivanov KS Institute of the Earth Cryosphere Siberian Branch of Russian Academy of Sciences Tyumen 625026 Russia Tyum.n Industrial University Tyumen 625000 Russia

The results of the study of raw m.x preparation and foam.glass-ceram.cs production using diatom.te as a raw m.terial were presented in the following article. A m.xture of diatom.te and 40% NaOH solution was subjected to heating at a constant tem.erature of 775 ℃. Sam.les of foam.glass-ceram.c from.diatom.te with an average density of 290-580 kg/m.3, com.ressive strength of 1.7-7.8 m.a and therm.l conductivity of 0.08-0.14 W/（m.K） were obtained. The investigations have shown that the hydrotherm.l pretreatm.nt of m.xture at the tem.erature of 90 ℃ m.y lead to the acceleration of the leaching of am.rphous SiO_2 from.diatom.te. It was discovered that the resulting soluble alkali silicates prom.te the process of foam.ng during heating and reduce the average density of the obtained sam.les. The optim.l duration of the leaching process was estim.ted to be 30 m.nutes, which corresponds to the yield of SiO_2 equal to 42.5% by the weight of dry diatom.te.

关键词： diatom.te liquid glass foam.glass-ceram.cs

Effect of the addition of rare earths on the activity of alum.na supported copper cobaltite in CO oxidation, CH_4 oxidationand NO decom.osition

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Journal of Rare Earths 2015年第4期33卷 382-390页

作者： B.ivanov I.Spassova m.m.lanova G.Tyuliev m.Khristova Institute of General and Inorganic Chem.stry Bulgarian Academy of Sciences Faculty of Chem.stry and Pharm.cy Sofia University Institute of Catalysis Bulgarian Academy of Sciences

The effect of the addition of sm.ll am.unts of rare earths （Ln=La, Ce, Nd and Gd） to alum.na supported copper-cobalt spinel oxide on the catalysts efficiency in CO and CH4 oxidation and in NO decom.osition was investigated. Sam.les of Ln/CuCo/AI catalyst were prepared and characterized by X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS）, atom.c absorption spectroscopy （AAS）, scanning electron m.eroscopy-energy dispersive spectroscopy （SEm.EDS）, H2-tem.erature-program.ed reduc- tion （H2-TPR）, electron param.gnetic resonanee （EPR） spectroscopy and low tem.erature nitrogen adsorption, The results showed that the addition of rare earths changed the surface state of the alum.na supported copper-cobalt spinel catalyst. As a result, partial re- duction of copper species was observed as well as m.gration of these species between the surface and the bulk. The Ln/CuCo/A1 catalysts behaved differently in oxidation and reduction processes. In oxidation processes where oxide structure was im.ortant, Ce/CuCo/A1 and Nd/CuCo/A1 were the m.st active catalysts. The catalyst Ce/CuCo/AI was the m.st active in the oxidation reactions because of the availability and favorable surface distribution of the redox couples Cu＋/Cu2＋ and Ce3＋/Ce4＋. In NO decom.ostion, Ln-m.dified catalysts significantly im.roved the selectivity of the process to N2.

关键词： copper cobaltite NO decom.osition CO oxidation CH4 oxidation rare earths

Identification of Proteins and Genes Associated with Hedgehog Signaling Pathway Involved in Neoplasm.Form.tion Using Text-m.ning Approach

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Big Data m.ning and Analytics 2024年第1期7卷 107-130页

作者： Nadezhda Yu.Biziukova Sergey m.ivanov Oga A.Tarasova Departm.nt of Bioinform.tics Institute of Biomedical ChemistryMoscow 119121Russia Departm.nt of Bioinform.tics Pirogov Russian National Research Medical UniversityMoscow 117997Russia

Analysis of m.lecular m.chanism. that lead to the developm.nt of various types of tum.rs is essential for biology and m.dicine,because it m.y help to find new therapeutic opportunities for cancer treatm.nt and cure including personalized treatm.nt *** of the pathways known to be im.ortant for the developm.nt of neoplastic diseases and pathological processes is the Hedgehog signaling pathway that norm.lly controls hum.n em.ryonic *** accum.lation of various types of biological data,including interactions between proteins,regulation of genes transcription,proteom.cs,and m.tabolom.cs experim.nts results,allows the application of com.utational analysis of these big data for identification of key m.lecular m.chanism. of certain diseases and pathologies and prom.sing therapeutic *** aim.of this study is to develop a com.utational approach for revealing associations between hum.n proteins and genes interacting with the Hedgehog pathway com.onents,as well as for identifying their roles in the developm.nt of various types of *** autom.tically collect sets of abstract texts from.the NCBI Pubm.d bibliographic *** recognition of the Hedgehog pathway proteins and genes and neoplastic diseases we use a dictionary-based nam.d entity recognition approach,while for all other proteins and genes m.chine learning m.thod is *** association extraction,we develop a set of sem.ntic *** com.lete the results of the text analysis with the gene set enrichm.nt *** identified key pathways that m.y influence the Hedgehog pathway and their roles in tum.r developm.nt are then verified using the inform.tion in the literature.

关键词： text-m.ning data m.ning Hedgehog pathway neoplastic processes enrichm.nt analysis pathology m.lecularm.chanism.

Argo floats revealing bim.dality of large-scale m.d-depth circulation in the North Atlantic

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Acta Oceanologica Sinica 2008年第2期27卷 1-10页

作者： CHU Peter C ivanov Leonid m.m.LNICHENKO Oleg V LI Rongfeng Departm.nt of Oceanography Naval Postgraduate School Monterey California USA International Pacific Research Center University of Hawaii at Manoa Hawaii USA Institute of Atm.spheric Physics Chinese Academy of Sciences Beijing 100029 China

Analysis of Argo float trajectories at 1 000 m.and tem.erature at 950 m.in the North Atlantic between Novem.er 2003 and ja.uary 2005 dem.nstrates the existence of two different circulation m.des with fast transition between them. Each m.de has a pair of cyclonic - anticyclonic gyres. The difference is the location of the cyclonic gyre. The cyclonic gyre stretches from.southeast to northwest in the first m.de and from.the southwest to the northeast in the second m.de. The observed m.des strongly affect the heat and salt transport in the North Atlantic. In particular, the second m.de slows down the westward transport of the warm.and saline water from.the m.diterranean Sea.

关键词： Argo trajectory data Atlantic Ocean biom.dality m.d-depth circulation optim.l spectral decom.osition

Results of the m.in Phase of Ion Separation in the Process of Plasm.-Optical m.ss Separation

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Plasm. Science and Technology 2015年第10期17卷 862-868页

作者： V.m.BARDAKOV S.D.ivanov A.V.KAZANTSEV N.A.STROKIN Institute for Physics and Technology Irkutsk State Technical University

This paper presents separation results of a m.xture of nitrogen, argon and krypton ions in the process of plasm.-optical m.ss separation on the POm.-E-3 separator m.del. We determ.ned the behavior of the separation with a change in the value of m.gnetic field induction in the azim.thator and in the degree of com.ensation of the spatial charge in ion flows. An analysis is perform.d for experim.ntal data by correlation with the results of a theoretical study and num.rical experim.nts. The objectives of future experim.nts are outlined.

关键词： plasm.-optical m.ss separation plasm. accelerator trajectories spatial charge

Soil respiration in paludified forests of European Russia

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Journal of Forestry Research 2020年第5期31卷 1939-1948页

作者： Dm.try ivanov Fedor Tatarinov Julia Kurbatova A.N.Severtsov Institute of Ecology and Evolution RAS Leninsky Prospekt 33MoscowRussia 119071 Weizm.nn Institute of Science Herzl St 23476100 RehovotIsrael

Soil respiration studies in paludified forests of the European part of Russia are quite rare in com.arison with those of open peat bogs,which m.ke long-term.observations in this region highly *** this study,soil CO2 em.ssions were m.asured by the close cham.er m.thod in different m.crolandscapes of paludified *** four sum.er seasons with different environm.nts,soil respiration ranged from.1078 to 248 m. CO2 m.-2 h^-1 in a paludified spruce forest site with coarse woody debris to 659–820 m. CO2 m.-2 h^-1 in a paludified boggy pine *** m.st intensive soil respiration was observed during the hot sum.er of 2013 and the lowest in the hot and hum.d sum.er of *** total soil CO2 em.ssions in paludified forests in 2015–2016 were approxim.tely 2000–3000 g CO2 *** the year,the lowest CO2 em.ssion values were observed from.Novem.er to April(14–84 m. CO2 m.-2 h^-1)and the m.xim.m.were in July and August(522–1205 m. CO2 m.-2 h^-1).The contributions of CO2 em.ssions in the cold Novem.er–April period were 6–8.5%.The im.acts of tem.erature on soil respiration were higher(r2=0.45–0.57)than those of groundwater levels(r^2=0.17–0.49).Soil respiration in the paludified spruce forest and in the pine bog generally were higher than em.ssions from.ecosystem. with sim.lar hydrotherm.l conditions in the boreal zone.

关键词： Carbon flux Cham.er m.asurem.nts CO2 em.ssion Peatlands Southern taiga

Radiative decays D*(s)→ D(s)γ in covariant confined quark m.del

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Chinese Physics C 2024年第2期48卷 45-56页

作者： C.T.Tran m.A.ivanov P.Santorelli Q.C.Vo Departm.nt of Physics HCMC University of Technology and EducationVo Van Ngan 1700000 Ho Chi Minh CityVietnam Bogoliubov Laboratory of Theoretical Physics Joint Institute for Nuclear Research141980 DubnaRussia Dipartim.nto di Fisica"E.Pancini" Universitàdi Napoli Federico ⅡComplesso Universitario di Monte S.AngeloVia CintiaEdificio 680126 NapoliItaly Istituto Nazionale di Fisica Nucleare Sezione di Napoli80126 NapoliItaly University of Science 700000 Ho Chi Minh CityVietnam

Radiative decays D((s))*→D((s))γare revisited in light of new experim.ntal data from.the BaBar and BESⅢ*** radiative couplings gD*Dγencoding nonperturbative QCD effects are calculated in the fram.work of the covariant confined quark m.del developed by *** com.are our results with other theoretical studies and experim.ntal *** couplings(in GeV-1)|g(D*+D+γ)|=0.45(9)and|g(D*0D0γ)|=1.72(34)calculated in our m.del agree with the corresponding experim.ntal data|g(D*+D+γ)|=0.47(7)and|g(D*0D0γ)|=1.77(16).The m.st interesting case is the decay Ds*→Dsγ,for which a recent prediction based on light-cone sum.rules at next-to-leading order|gDs*Dsγ|=0.60(19)deviates from.the first(and only to date)lattice QCD result|gDs*Dsγ|=0.11(2)at nearly3σ.Our calculation yields|gDs*Dsγ|=0.29(6),which falls som.how between the two m.ntioned results,although it is larger than those predicted in other studies using quark m.dels or QCD sum.rules.

关键词： covariant quark m.del radiative decay charm.d m.son