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Postglacial incision-infill cycles at the Borisoglebsk Upland: Correlations between interfluve headwaters and fluvial network

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International Soil and Water Conservation research 2019年第2期7卷 184-195页

作者： Yuliya V.Shishkina Ekaterina V.Garankina vladimir r.belyaev Ilya G.Shorkunov Pavel V.Andreev Aleksey I.Bondar Viktoria I.Potapova Tatiana A.Verlova Faculty of Geography Department of Geomorphology and Palaeogeography and Laboratory for Soil Erosion and Fluvial ProcessesLomonosov Moscow State UniversityLeninskie Gory1Moscow 119991Russia Institute of Geography Department of Soil Geography and EvolutionRussian Academy of SciencesStaromonetnyj Lane29Moscow 119017Russia Institute of Earth Sciences of Saint-Petersburg State University St.PetersburgUniversitetskaya nab.7-9 199034Russia

The article discusses postglacial landscape transformation in the Northern Hemisphere Middle Pleistocene glaciation area located in the center of the russian *** attempted to verify the regional paleogeographic model by reconstructing the Late Pleistocene incision-infill cycles at the Eastern Borisoglebsk Upland based on a comparison of inactive interfluves headwaters and actual fluvial network *** study was also aimed to determine the past extent of fluvial *** research of the actual and buried topography,Ethology and pedogenic properties of surface deposits was carrid out with remote sensing data interpretation,DGPS survey,and detailed description of geological cores *** study was followed by analysis of grain size,chemical and organic contents,microstructure,and numerical *** the available results,we propose a scenario of the fluvial network transformation at the Eastem Borisoglebsk Upland over the last 150 *** least four fluvial incision stages were determined while network extent has significantly changed through the Late *** can be generally associated with the regional base level decrease-Late Moscow,Late Valdai and Late Holocene and accompanying isolation of the Nero Lake terraces of 130 m,100-105 m and 95-98 *** stages were separated by landscape stability or aggradation periods those were asynchronous at the middle and upper parts of the fluvial *** main agent of initial valley infill appears to be local lacustrine sedimentation altered by alluvial and colluvial deposition towards the second half of *** landscape conditions variability emphasize the importance of comprehensive local correlations for regional retrospective models.

关键词： Interfluve headwaters Fluvial Incision-Infill Cycle Pleistocene

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The history and assessment of effectiveness of soil erosion control measures deployed in russia

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International Soil and Water Conservation research 2013年第2期1卷 26-35页

作者： Valentin Golosov Vladimir.belyaev Faculty of Geography Lomonosov Moscow State LniversitvGSP-1Moscow Russia Lomonosov Moscow State Lniversity GSP-1Moscow Russia

research activities aimed at design and application of soil conservation measures for reduction of soil losses from cultivated fields started in russia in the last quarter of the 19th century.A network of"zonal agrofor-estry melioration experimental stations"was organized in the different landscape zones of russia in the first half of the 20th *** main task of the experiments was to develop effective soil conservation measures for russian climatic,soil and land use *** most widespread and large-scale introduction of coun-termeasures to cope with soil erosion by water and wind into agricultural practice supported by serious governmental investments took place during the Soviet Union period after the Second World *** the Soviet Union collapse in 1991,general deterioration of the agricultural economy sector and the absence of investments resulted in cessation of organized soil conservation measures application at the nation-wide ***,some of the long-term erosion control measures such as forest shelter belts,artificial slope terracing,water diversion dams above formerly active gully heads survived until the *** the case study of sediment redistribution within the small cultivated catchment presented in this paper an attempt was made to evaluate average annual erosion rates on arable slopes with and without soil conservation measures for two time *** has been found that application of conservation measures on cultivated slopes within the experimental part of the case study catchment has led to a decrease of average soil loss rates by at least 2.52.8 *** figures obtained are in good agreement with previously published results of direct monitoring of snowmelt erosion rates,reporting approximately a 3-fold decrease of average snowmelt erosion rates in the experimental sub-catchment compared to a traditionally cultivated control sub-catchment.A substantial decrease of soil erosion rates on arable slopes has been equall

关键词： Soil erosion Soil conservation Sediment redistribution ^(137)Cs European russia

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NiTi形状记忆合金在恒定应力和温度下保温过程中马氏体相变诱发的可恢复应变

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Transactions of Nonferrous Metals Society of China 2023年第9期33卷 2687-2697页

作者： Sergey belyaev Natalia rESNINA Elena DEMIDOVA Aleksei IVANOV Artur GABrIELYAN Alexander SHELYAKOV vladimir ANDrEEV Saint-Petersburg State University 7/9 Universitetskaya nab.Saint-Petersburg 199034Russia National research Nuclear University MEPhI(Moscow Engineering Physics Institute) 31 Kashirskoe shosseMoscow 115409Russia Baikov Institute of Metallurgy and Materials Science RAS49 Leninskii pr.Moscow 119334Russia

研究NiTi形状记忆合金在应力下等温保温过程中的应变变化。为了研究可恢复应变,对Ni_(51)Ti_(49)和Ti_(40.7)Hf_(9.5)Ni_(44.8)Cu_(5)合金进行3种制度的保温处理,分别是:应力下冷却后在应力下保温(制度1);无应力和载荷下冷却后在应力下... 详细信息

研究NiTi形状记忆合金在应力下等温保温过程中的应变变化。为了研究可恢复应变,对Ni_(51)Ti_(49)和Ti_(40.7)Hf_(9.5)Ni_(44.8)Cu_(5)合金进行3种制度的保温处理,分别是:应力下冷却后在应力下保温(制度1);无应力和载荷下冷却后在应力下保温(制度2);具有双向形状记忆效应的样品在应力下保温(制度3)。结果表明,所有制度中,在应力下保温后样品均会发生应变变化。该应变在后续热处理或卸载后能恢复,因此表明应变变化是由等温马氏体相变引起的。这种等温应变取决于合金的化学成分、等温保温制度、应力和保温温度。Ti_(40.7)Hf_(9.5)Ni_(44.8)Cu_(5)合金(制度1)和Ni_(51)Ti_(49)合金(制度2)的最大等温应变分别为3.4%和6.1%。制度3中的保温伴随着较小的应变(小于0.3%)。讨论储存弹性能对等温马氏体相变的影响,结果表明,当相变伴随着较小的储存弹性能时,等温应变较大。

关键词：等温马氏体相变可恢复应变超弹性应变 NiTi形状记忆合金保温

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Applicability of high-temperature cooling systems in different European countries from the view of the condensation risk

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Building Simulation 2021年第5期14卷 1453-1466页

作者： vladimir Zmrhal Martin Bartak Czech Technical University in Prague Faculty of Mechanical EngineeringDepartment of Environmental Engineering Technicka 416000 Prague 6Czech Republic

Due to the different approaches in determining the ventilation airflow rate per person for workspaces,where high-temperature air conditioning systems are used for air conditioning,problems with the condensation of water vapour on the cold surfaces of the system can *** article analyses the risk of condensation in various European cities using the available climatic *** with cooling ceilings and cooling beams with a ventilation device operating in parallel are taken into *** ventilation airflow rates per person were *** the example of a room equipped with high-temperature cooling,an energy simulation calculation is performed,which includes a ventilation and air-conditioning system with the possibility of capacity *** is clear from the results that the condensation of water vapour can be prevented by technical measures at the cost of reducing the cooling capacity,which can affect the achievement of the thermal comfort of those *** the end,suitable solutions are discussed,which should already be adopted at the time the device is designed so that the risk of condensation is not a major obstacle in the operation of these energy-efficient *** irreplaceable role in the operation of high-temperature cooling systems is played by a measurement and control system with a suitable algorithm to prevent condensation.

关键词： ventilation air-conditioning cooled ceilings chilled beams low energy cooling risk of condensation

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Heterogeneity of Mantle Peridotites from the Polar Urals (russia): Evidence from New LA-ICP-MS Data

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Journal of Earth Science 2019年第3期30卷 431-450页

作者： vladimir r.Shmelev Shoji Arai Akihiro Tamura Institute of Geology and Geochemistry Ural Branch Russian Academy of Sciences Yekaterinburg 620075 Russia Earth Science Department Kanazawa University Kanazawa 920-1192 Japan

To discuss the nature of the compositional heterogeneity of the peridotite massifs of the Polar Urals(russia), the geochemical study by LA-ICP-MS of pyroxenes and amphiboles from these mantle formations was performed. The trace element compositions in clinopyroxenes indicate the existence of the mantle protolith of two types. The first protolith type, represented by lherzolites and diopside harzburgites,was originated from the partial melting(5%–10%) under the spinel facies conditions, while the second one,represented by diopside harzburgites, was formed under the polybaric partial melting(17%–19%) under garnet and spinel facies conditions. Subsequently, the mantle peridotite protolith was subject to fluidinduced partial melting in the suprasubduction setting that was resulted in the formation of *** affected by penetrating melts and fluids peridotites experienced the refertilization(LrEE enrichment of clinopyroxenes) and high-temperature hydratation with subsequent development of pargasite and Mg amphibole. The high-T fluid-induced metamorphism at the subduction zone was accompanied by the formation of metaperidotites with clinochlore and rEE-depleted tremolite.

关键词： pyroxene amphibole peridotite LA-ICP-MS Polar Urals russia

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Incubation time fracture criterion for FEM simulations

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Acta Mechanica Sinica 2011年第4期27卷 541-549页

作者： vladimir Bratov Institute for Problem in Mechanical Engineering of the russian Academy of Sciences Bolshoj pr.V.O.61199178St.-PetersburgRussia

The paper is discussing problems connected with embedment of the incubation time criterion for brittle fracture into finite element computational schemes. Incubation time fracture criterion is reviewed; practical questions of its numerical implementation are extensively discussed. Several examples of how the incubation time fracture criterion can be used as fracture condition in finite element computations are given. The examples include simulations of dynamic crack propagation and arrest, impact crater formation （i.e. fracture in initially intact media）, spall fracture in plates, propagation of cracks in pipelines. Applicability of the approach to model initiation, development and arrest of dynamic fracture is claimed.

关键词： Fracture dynamics Incubation time Crack dy-namics Finite element method Fracture arrest

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Features of Electroplastic Effect in Alloys with Martensite Transformation

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Acta Metallurgica Sinica(English Letters) 2018年第12期31卷 1305-1310页

作者： vladimir Stolyarov Mechanical Engineering research Institute RussianAcademy of SciencesM.Kharitonievsky4MoscowRussia 101990 National research Nuclear University MEPhI MoscowRussia

Influence of different electric current modes （pulse and direct） on occurrence of the electroplastic effect under uniaxialtension in the coarse-grained alloys with martensite transformations is investigated. The materials are shape memoryTi49.3Niso.7 alloy and metastable austenite transformation-induced plasticity （TrIP） steel. The paper contains experimentalresults of current impact on the ＂stress-strain＂ curves of the material. It has been taken an experimental measurement ofthe sample temperature during the test. It is shown that the shape of a stress-strain curves and type of the serrate plasticflow, connected with the martensitic transformation and electroplastic effect, depend on the current modes. Impact of pulsecurrent and direct current suppresses shape memory and TrIP effect.

关键词： Electroplastic effect TrIP effect Pulse current Deformation Martensite transformation Tension

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Thermoelectric and electrical characteristics of SmS ceramic samples after exposure to a pulsed magnetic field

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Journal of rare Earths 2022年第11期40卷 1778-1784,I0004页

作者： Ivan Volchkov Evgeniy Baskakov vladimir Strelov vladimir Kanevskii FSrC"Crystallography and Photonics"rAS Leninskiy Prospekt 59119333MoscowRussia

Samarium monosulfide(SmS)is a promising material for creating thermoelectric generators(TEG),gas sensors and strain *** the high values of the generated thermo electromotive force(TEMF)(α≈170-350μV/K),methods for increasing the efficiency of TEGs based on SmS are of considerable *** of these methods can be short-term effects of magnetic fields,including pulsed ones,on these *** action of a pulsed magnetic field(PMF)leading to an increase in TEMF(U)of SmS ceramic samples is *** that are not subjected to high frequency currents(HFC)annealing show an increase in UT of 44.54%-62.18%(from 11.9 to 17.2-19.3 mV).The conductivity(σ)of the samples is~22 Q/cm and is insensitive to short-term exposure to a *** that undergo HFC annealing show an increase in Uof 23.47%-41.31%(from 21.3 to 26.3-30.1 mV)after exposure to a *** conductivity of the samples is~15Ω^(-1)/cm and after a short exposure to the PMF is changing nonmo notonically,with an increase in the overall *** difference in the values of Uand a can be explained by presence of an ordered grain structure and a significant amount of the Sm_(2)O_(2)S phase in the samples subjected to HFC *** mechanisms of the observed changes are discussed.

关键词： rare earths Thermoelectric Electric properties Magnetically induced changes Samarium monosulfide

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Mesh-supported V2O5-WO3/TiO2 nanosheet array catalysts for efficient removal of NOx

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Tungsten 2025年第1期 100-111页

作者： Zhi-Qi Zhang Liu Yang Wen Luo vladimir An Jing Li Bao-Dan Liu School of Materials Science and Engineering Northeastern University Foshan Graduate School of Innovation Northeastern University Kizhner research Center School of Advanced Manufacturing Technologies Tomsk Polytechnic University

The design and synthesis of vanadium-based denitration catalysts with low-temperature activity pose significant challenges in the field of toxic gas *** this study,we have developed a novel approach to fabricate highly efficient V2O5-WO3/TiO2monolithic mesh catalysts for NOxreduction at low ***,TiO2nanosheets with strong adhesion and large surface area were grown on Ti mesh using plasma electrolytic oxidation technology and hydrothermal ***,super-small traces of WO3and V2O5active nano-species were subsequently deposited on TiO2nanosheets using the deposition-precipitation *** to traditional ceramic-based V2O5-WO3/TiO2catalysts,our V2O5-WO3/TiO2monolithic mesh catalyst exhibits superior mechanical performance,excellent thermal conductivity,lower pressure drop,higher utilization of active components,and stronger synergistic ***,the V2O5-WO3/TiO2monolithic mesh catalysts exhibited excellent low-temperature catalytic activity with 98% of NOxconversion at 220℃,and remarkable long-term SO2tolerance and water resistance in the selective catalytic reduction（SCr） of NOxwith *** SCr reaction of tiny V2O5and WO3active species supported on TiO2nanosheets directly demonstrated to follow the Eley-rideal mechanism by in situ infrared spectra.

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Integer Codes Correcting Single Errors and random Asymmetric Errors within a Byte

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Journal of Systems Science & Complexity 2020年第6期33卷 2103-2113页

作者： rADONJIC Aleksandar VUJICIC vladimir Institute of Technical Sciences of the Serbian Academy of Sciences and Arts BelgradeSerbia

In optical networks without optical amplifiers(ONWOAs) photons may fade or fail to be detected, but new photons cannot be generated. Hence, under normal conditions, only 1 → 0 errors can occur. However, in some situations, the photodetector may generate a false 0 → 1 error. This mostly occurs in cases when the dark current is higher than specified. With this in mind, in this paper,the authors present a class of codes suitable for use in ONWOAs using self-synchronous *** presented codes can correct single errors and random asymmetric(1 → 0) errors within a b-bit byte. Unlike classical codes, these codes use integer and lookup table operations. As a result, their interleaved version, implemented on a dual-core 3.0 GHz processor, achieves the theoretical throughput above the operating rate of 10 G networks.

关键词： Asymmetric errors decoding throughput integer codes optical networks single errors

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