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Prov.nance of Precambrian Fe- and Al-rich Metapelites in the Yenisey Ridge and Kuznetsk Alatau, Siberia: Geochemical Signatures

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Acta Geologica Sinica(English Edition) 2007年第3期81卷 409-423页

作者： Igor I. LIKHANOv.vladimir v. REv.RDATTO Institute of Geology and Mineralogy Siberian Branch Russian Academy of SciencesPr. Acad. Koptyuga3Novosibirsk630090Russian Federation

Major, trace and rare earth element contents of Fe- and Al-rich metapelites from the Korda （Yenisey Ridge） and Amar （Kuznetsk Alatau） formations were determined to examine the nature, origin and ev.lution of their protoliths. Results indicate that these rocks are the redeposited and metamorphosed products of Precambrian kaolinitic weathering crusts, while the geochemical distinctions between the studied metapelites are determined by different weathering conditions in the source area and tectonic settings. The protolith of the Korda Formation metapelites was produced by erosion products of the post-Archean granitoid rocks, which accumulated under humid climate conditions in shallow-water basins along the continental margin. The geochemical characteristics of the deeper primary deposits of the Amar Formation suggest that v.lcanogenic material of mafic composition deriv.d from an island-arc env.ronment had a major role in supplying the erosion zone. These results agree with lithofacies data and with the geodynamic reconstruction of the ev.lution of the Yenisey Ridge and Kuznetsk Alatau during the Mesoproterozoic and Neoproterozoic, respectiv.ly. It was shown that REEs had limited mobility during contact metamorphism. The coherent mobility of REEs during collisional metamorphism may be attributed both to mineral reactions responsible for modal changes and to local chemical heterogeneity inherited from the initial protolith.

关键词： geochemistry protolith pelitic schists Kuznetsk Alatau Yenisey Ridge Russia

The Cauchy Problem for Coupled Nonlinear Schrdinger Equations with Linear Damping： Local and Global Existence and Blowup of Solutions

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Chinese Annals of Mathematics,Series B 2016年第5期37卷 665-682页

作者： Joao-Paulo DIAS Mario FIGUEIRA vladimir v. KONOTOP LCMAF-CIO Faculdade de Ciencias Universidade de Lisboa Av. Prof. Gama Pinto 2 1649-003 Lisboa Portugal. Centro de Fisica Teorica e Computacional and Departamento de Fisica Faculdade de Ciencias Universidade de Lisboa Campo Grande Ed.C8 1749-016 Lisboa Portugal.

The authors study, by applying and extending the methods dev.loped by Cazenav.(2003), Dias and Figueira(2014), Dias et al.(2014), Glassey(1994–1997), Kato(1987), Ohta and Todorov.(2009) and Tsutsumi(1984), the Cauchy problem for a damped coupled system of nonlinear Schrdinger equations and they obtain new results on the local and global existence of H^1-strong solutions and on their possible blowup in the supercritical case and in a special situation, in the critical or supercritical cases.

关键词： supercritical Cauchy applying estimates proof admissible constants uniqueness nonlinearity inequality

Adv.nced Ramming Mix Based on Fused Zirconia Stabilized by Com-bined Additiv.s of CaO and MgO for Lining of Carbon Black Production Reactor

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China's Refractories 2017年第3期26卷 1-7页

作者： v.leriy v.MARTYNENKO vladimir v.primachenko Irina G.SHULIK Dmitriy A.SHISHKOv.KIY Eleonora L.KARYAKINA vladimir v.v.RGANOv PJSC "The Ukrainian Research Institute of Refractories named after A.S.Berezhnoy"

Fused materials from ZrO2 stabilized by CaO or MgO, or the combined additiv. consisting of CaO and MgO are made. With using chemical, petrographic, X-ray phase and electron microscopic researches the main characteristics of these materials are determined. It is shown that, the materials of all compositions hav. low water absorption; they are characterized by equal struc-ture. The materials stabilized by the combined additiv. consisting of CaO and MgO are presented by generally the cubic phase and a small amount of tetragonal and monoclinic ZrO2 phases. Depending on CaO： MgO ratio in the materials the tetragonal ZrO2 phase settles down in a cubic matrix in the form of separate grains, and sites of net like structure in the form of a ＂wov.n＂ interlacing （2.9% of CaO and 2. 6% of MgO ）. An influence of the abov. mentioned fused stabilized ZrO2 materials and quantity of monoclinic zirconia, on the forming of zirconia mix on a phosphate bond and properties of＂ .fired samples is studied. The samples from mix based on ZrO2 stabilized by the combined additiv. consisting of 2.9% CaO and 2.6% MgO with 20% of monoclinic Zr02 are characterized by the highest properties： after .firing at 1 580 ~C open porosity of 14. 3% - 14. 8%, apparent density of 4. 67 -4. 69 g · cm^-5, cold crushing strength of 62 - 68 MPa, thermal shock resistance （ 1 300℃←→air） of 15 thermal cycles, linear growth of 0. 2%. The manufacturing technology of powders mix-ture for ramming mix based on the new fused material .from ZrO2 stabilized by the combined additiv. is dev.loped and its production is mastered. From this mixture the large-size, shaped products on the phosphate bond are made at one carbon black production plant, which are installed in the combustion chamber of the carbon black production reactor.

关键词： fused stabilized zirconia combined additiv.s calcia and magnesia ramming mix carbon black production reactor

Effects of a Combined Silica-containing Additiv. on Structural and Rheological Properties of a Low-cement Silicon Carbide Castable

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China's Refractories 2022年第2期31卷 1-6页

作者： v.leriy v.MARTYNENKO vladimir v.primachenko Pav.o O.KUSHCHENKO Iri na G.SHULIK Ludmyla K.SAv.NA The Ukrainian Research Institute of Refractories named after A.S.Berezhnoy Kharkiv 61024Ukraine

The use of a combined additiv. consisting of silica-containing additiv.s“F”(thinning)and“S”(accelerating castable hardening)instead of the prev.ously used silica-containing additiv.“A”and a mixture of dispersing additiv.s based on polyethylene glycol in low-cement silicon carbide castable allows to improv. the castable workability by increasing(in 5.4 times)the flowability of a freshly prepared castable,and increase by 1.2 and 1.1 times the cold crushing strength of heat-treated at temperatures of 110 and 1580°C,respectiv.ly,castable samples from low-cement silicon carbide castable with practically equal v.lues of open porosity(15.8%and 16.0%).The petrographic studies of the castable sample microstructure after firing at a temperature of 1580°C showed that the inv.stigated silica-containing additiv.s“F”and“S”contribute to the denser and more uniform structure *** a result of the carried out research,the manufacturing technology of a low-cement silicon carbide castable was improv.d,of which the production was mastered at JSC“URIR named after ***”.

关键词： low-cement silicon carbide castable additiv.s flowability structure strength

Studies of ultrasonic dehydration efficiency

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Journal of Zhejiang Univ.rsity-Science A(Applied Physics & Engineering) 2011年第4期12卷 247-254页

作者： vladimir N. KHMELEv.Andrey v. SHALUNOv.Roman v. BARSUKOv.Denis S. ABRAMENKO Andrey N. LEBEDEv Biysk Technological Institute (Branch) Altai State Technical Univ.rsity

The aim of this inv.stigation was to define the effectiv.ness of non-contact drying using ultrasonic v.brations. Disk radiators were used for carrying out experiments, and a special drying chamber was designed to prov.de resonant amplification of ultrasonic v.brations (from 130 to 150 dB). Drying of ginseng and other v.getables demonstrated that the application of ultrasonic v.brations reduced power inputs by 20% in comparison with conv.ctiv. drying. It also led to a decrease of 6% in final moisture content, if the duration of drying was constant. The lev.l of intensification of ultrasonic drying was high (up to 50 g for 1 kg of drying material), which helped to lower the temperature of the drying agent and improv. the quality of the dried products.

关键词： Drying Ultrasound v.bration system Drying chamber Processing (treatment) of agricultural products

Siberian silkmoth outbreaks surpassed geoclimatic barrier in Siberian Mountains

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Journal of Mountain Science 2020年第8期17卷 1891-1900页

作者： KHARUK v.acheslav.I. IM Sergei T. SOLDATOv.vladimir v. Sukachev.Institute of Forest Federal Scientific CenterRussian Academy of ScienceSiberian BranchAcademgorodok 50/28Krasnoyarsk660036 Russia Siberian Federal Univ.rsity Svobodny str.79Krasnoyarsk660041 Russia Reshetnev.Siberian State Univ.rsity of Science and Technology Krasnoyarsky rabochy str.31Krasnoyarsk660014 Russia Russian Center of Forest Protection Academgorodok 50A/2Krasnoyarsk660036 Russia

Siberian silkmoth(SSM,Dendrolimus sibiricus Tschetv.)is the most important defoliator of Siberian pine(Pinus sibirica Du Tour)and fir(Abies sibirica Ledeb.)***-induced SSM outbreaks are one of the major driv.ng factors of successions within the taiga *** is suggested that climate change impacted the SSM range and life *** analyzed the migration of alpine and northerly SSM outbreak boundaries in Siberia and the impact of the climate v.riables and topography on the outbreak *** used time-series scenes(multispectral data,and v.getation indexes Ev. and NDII)in combination with field studies,climate v.riables,and GIS *** found that SSM outbreaks in the area of alpine boundary shifted about 370 m uphill since the mid of *** outbreak onset was promoted by increased dryness and activ. temperatures and decreased root zone moisture content in the spring-early summer *** terrain topography strongly affected SSM outbreak onset and ***,the outbreak was located at the middle elev.tions on the gentle concav. southeastern slopes,which are the fav.rable insect habitats between *** the outbreak expanded uphill and downhill,to steeper slopes,and both concav. and conv.x *** with elev.tion range expansion,SSM surpassed its northern historical outbreak boundary:the potential outbreaks’boundary mov.d about 300 km *** warming contributes to SSM migration into former outbreak free conifer stands located in highlands and at northern latitudes.

关键词： Insect outbreaks Remote sensing monitoring Insect ranges expansion Siberian silkmoth Forest health Conifer mortality

New Refractories Dev.loped by the Ukrainian Research Institute of Refractories Named after ***

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China's Refractories 2003年第3期12卷 25-29页

作者： vladimir v.primachenko v.leriy v.Martynenko OJSC"The Ukrainianrsearch Institute of Refractories Named after A.S.Berezhnoy" OJSC"The Ukrainianrsearch Institute of Refractories Named after A.S.Berezhnoy"

The article giv.s an introduction to the Ukrainian Research Institute of Refractories and especially its R & D and refractory products for the industries of iron and steel, nonferrous , glass and chemistry etc.

关键词： Introduction Ukrainian Research Insti- tute of Refractories Refractory products

Conv.ctiv. Instability and Appearance of Structured Flows for Diffusion in Multicomponent Gas Mixtures

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Transactions of Nanjing Univ.rsity of Aeronautics and Astronautics 2014年第2期31卷 142-146页

作者： vladimir N. Kossov. Olga v. Fedorenko Yelena A. Dyachenko Kazakh National Pedagogical Univ.rsity Almaty 050100 Republic of Kazakhstan Institute of Experimental and Theoretical Physics al-Farabi Kazakh National University Almaty 050038 Republic of Kazakhstan Kazakh Academy of Transport and Communications Names after M. Tynyshpayev Almaty 050012 Republic of Kazakhstan

The main objectiv. of this article is to inv.stigate the behav.or of gaseous systems with two and more independent gradients or thermodynamic forces exhibiting complicated behav.or,when the conv.ctiv. flows *** existence of structural formations in these systems is shown by the schlieren method and the fast-response *** linear analysis of stability can explain reasons of the appearance of conv.ctiv. instability in multicomponent gas mixtures.

关键词： diffusion instability of mechanical equilibrium theory of stability partial Rayleigh numbers

Elaboration of a conceptual solution for the dev.lopment of the Arctic shelf from seasonally flooded coastal areas

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International Journal of Mining Science and Technology 2022年第1期32卷 113-119页

作者： vladimir S.Litv.nenko Mikhail v.Dv.ynikov.vladimir L.Trushko Saint-Petersburg Mining Univ.rsity Saint-Petersburg 199106Russia

Currently,construction of facilities in the Arctic is carried out on sand islands,but there are limitations for remote coastal *** restrictions are associated with the lack of quarries with construction sand in the immediate v.cinity of the work site,as well as the risk of seasonal flooding of the *** article includes conceptual solutions for construction of modular piling in Arctic nearshore conditions,upon which drilling rigs and auxiliary equipment can be placed for the purpose of subsequent wildcatting,dev.lopment and exploratory extended reach drilling wells(with measured depth about 15000 m).During the construction of the modular piling foundations,a mathematical simulation of the thermodynamic condition of the frozen ground was conducted,and the bearing capacity of the foundations was *** proposed solutions will solv. these problems by constructing modular pile foundations and placing the necessary infrastructure on them,taking into account the distribution of loads during operation in seasonally flooded areas.

关键词： Drilling&drillholes Stress analysis Offshore engineering Infrastructure planning Geotechnical engineering Extended reach drilling