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Nano Research 2023年第7期16卷 10222-10233页

作者： vadim I.Avilov Roman V.Tominov Zakhar E.Vakulov Lev g.Zhavoronkov Vladimir A.Smirnov Research Laboratory Neuroelectronics and Memristive Nanomaterials(NEUROMENA Lab) Southern Federal UniversityTaganrog 347922Russia Institute of Nanotechnologies Electronics and Electronic Equipment EngineeringSouthern Federal UniversityTaganrog 347922Russia

The paper shows the results of the mathematical model development and the numerical simulation of the oxygen vacancies,and the distribution of TiO,Ti_(2)O_(3),and TiO_(2)oxides in the titanium oxide nanostructure obtained by local anodic oxidation(anodization).The effect of the anodization voltage pulse duration and amplitude on the titanium oxide composition distribution and the conduction channel formation was *** device prototypes based on electrochemical titanium oxide are fabricated and *** was shown that forming free resistive switching between the low resistances state(LRS)1.43±0.54 kΩand the high resistance state(HRS)28.75±9.75 kΩwere observed during 100,000 switching cycles and LRS 1.49±0.23 kΩwas maintained for 10,000 *** resistive switching of the synaptic device prototype was *** was shown that increasing Uset from 0.5 to 1.5 V leads to different LRS from 3.96±0.19 to 0.71±0.10 kΩ.The results obtained can be used in the development of technological foundations for the formation of high-performance multilevel artificial synapses for elements of neuroelectronics and hardware neural networks.

关键词： artificial intelligence neuromorphic systems memristive cross bar resistive switching scanning probe microscopy titanium oxide

Effect of spring grass fires on vegetation patterns and soil quality in abandoned agricultural lands at local and landscape scales in Central European Russia

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Ecological Processes 2018年第1期7卷 448-466页

作者： Larisa g.Khanina vadim E.Smirnov Michael S.Romanov Maxim V.Bobrovsky Institute of Mathematical Problems of Biology RAS branch of the M.V.Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences1 Prof.Vitkevich StPushchinoMoscow Region 142290Russia Center for Forest Ecology and Productivity of the Russian Academy of Sciences 84/32 bldg.14 Profsoyuznaya StMoscow 117997Russia Institute of Physico-Chemical and Biological Problems in Soil Science of the Russian Academy of Sciences 2 Institutskaya StPushchinoMoscow Region 142290Russia

Introduction:Abandonment of agricultural land is often happening all over the world and widespread in *** lands are subject to successional changes in vegetation and it seems necessary to provide effective methods for a sustainable ecosystem management of those ***,factors which determine successional processes,especially fires,have not been studied in *** aim of this article is to reveal how spring grass fires affect the abandoned arable lands in the study area at the landscape and local ***:A region of 265.5 km2 located in the south of Moscow was *** the landscape scale,we analyzed the spatial characteristics of the area in relation with a 30-year history of spring fire events extracted from the Landsat archive,and climatic *** regression was *** the local scale,we sampled soil and vegetation at two sites and in three biotopes at each site:mature forest and two neighboring biotopes affected and unaffected by *** species diversity,soil quality,and relationship between soil and vegetation were assessed by ANOVA,v test,NMDS,and ***:Abandoned lands covered 39%of the study area and not less than 72% of these were affected by grass fires,happening mainly between 1998 and *** causes the ignition of the field layer accidentally,but the area over which the fire spreads is determined by climatic factors and the presence of flammable material(dry grass and litter)for *** March temperatures and low precipitation values in April increase the inflammability of dry grasses which are abundant on the former *** a result,burnt areas are steadily expanding in abandoned lands where trees are *** abandoned lands that were either affected or unaffected by fires,two different plant communities developed,respectively:grassy vegetation mainly dominated by Calamagrostis epigeios and young forest of pioneer trees with high crown *** all soil variables were statistically diffe

关键词： soil forest landscape

甲烷浓度对CVD金刚石薄膜晶体学生长过程的影响

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无机材料学报 2007年第3期22卷 570-576页

作者：朱宏喜毛卫民冯惠平吕反修 Vlasov I I Ralchenko V g.khomich A V 北京科技大学材料学系 general Physics Institute Russia Academy of SciencesMoscow 119991 Russia Institute of Radio Engineering & Electronics Russia Academy of SciencesFryazino 141190 Russia

采用X射线衍射技术、电子背散射衍射技术和扫描电镜分别观察了不同甲烷浓度条件下沉积的CVD自支撑金刚石薄膜的宏观织构、微区晶界分布和表面形貌．研究了金刚石晶体{100}面和{111}面生长的晶体学过程．研究表明,{100}面通过吸附活性基... 详细信息

采用X射线衍射技术、电子背散射衍射技术和扫描电镜分别观察了不同甲烷浓度条件下沉积的CVD自支撑金刚石薄膜的宏观织构、微区晶界分布和表面形貌．研究了金刚石晶体{100}面和{111}面生长的晶体学过程．研究表明,{100}面通过吸附活性基团CH2 2-,而{111}面通过交替吸附活性基团CH3 -和CH3-后脱氢堆积碳原子．低甲烷浓度时,{111}面表面能低于{100}面,使{111}面生长略快于{100}面．甲烷浓度升高,动力学作用增强使{100}面生长明显快于{111}面,使金刚石薄膜产生{100}纤维织构;同时显露的{100}面平行于薄膜表面,竞争生长使位于晶体侧面的{111}面由于相互覆盖而减小,形成了不同于单晶体自由生长的薄膜表面形貌组织．

关键词：金刚石薄膜织构晶体生长表面形貌组织

Xiamen after 20 Years of Ecological Transformation

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China Today 2025年第1期74卷 66-68页

作者： ZACHARY g.LUNDQUIST 不详

The efforts Xiamen has made in ecological protection over the last 20 years have helped it become a beautiful and clean *** years ago,I had the opportunity to travel to the city of Xiamen in southeastern China’s Fujian ***,due to the fact that I was in a rush,I did not have the chance to see the whole *** memory of Xiamen was its pleasant climate and unforgettable beauty-I knew if I ever got the opportunity,I would revisit this *** years went by until I was able to return to this city *** emerging from the airport,I realized that I had grown older,while Xiamen was becoming increasingly youthful and *** exactly had given this city such vitality?

关键词： Ecological Xiamen Transformation

Peculiarities of Ethylene Polymerization Reactions with Bis(imino)pyridyl Complexes of CoCl_(2) and FeCl_(2)

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Chinese Journal of Polymer Science 2024年第4期42卷 492-500页

作者： Laura A.Rishina Yury V.Kissin Svetlana S.Lalayan Artem A.Antonov vadim g.Krasheninnikov Alexander A.gulin N.N.Semenov Federal Research Center for Chemical Physics Russian Academy of Sciences4 Kosygin St.Moscow119991Russia Department of Chemistry and Chemical Biology RutgersThe State University of New Jersey123 Bevier Rd.PiscatawayNJ08854USA Boreskov Institute of Catalysis Russian Academy of Sciences5 Lavrentieva Prosp.Novosibirsk630090Russia

The article describes ethylene polymerization reactions with transition metal catalysts based on complexes of CoCl_(2) and FeCl_(2) with an N,N,N-tridentate ligand 2,6-bis[1-(2,6-dimethylphenylimino)ethyl]pyridine. The complexes are converted into polymerization catalysts by reacting them either with polymethylalumoxane (MAO) or with a combination of Al(C2H5)2Cl and Mg(C4H9)2 at an [Al]:[Mg] ratio of ~3. Both MAO-activated complexes readily polymerize ethylene at 35 ℃ with the formation of linear, low molecular weight polymers with a narrow molecular weight distribution. The same complexes, when activated with the Al(C2H5)2Cl-Mg(C4H9)2 combination, form multi-center catalysts and generate polyethylenes with a broad molecular weight distribution.

关键词： Ethylene polymerization Bis(imino)pyridyl complexes of CoCl_(2)and FeCl_(2) Molecular-weight distribution Polymer chain structure

Deep Metallogenic Speciality of Lithosphere in Amur Province, Russia

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global geology 2003年第2期8卷 166-174页

作者： A.M.Petryshchevsky V.g.khomich N.g.Boriskina Regional Problem Institute of Complex Analysis FEB RAS Birobidzan 679016 RussiaRegional Problem Institute of Complex Analysis FEB RAS Birobidzan 679016 RussiaGeological Institute of FEB RAS Vladivostok 690022 Russia

The spatial connections of endogenous deposits with anomalies of the vertical density gradient in lithosphere, calculated on the formulas for the spherical gravity sources are analyzed for Amur Province. The spatial parameters of tin-bearing, tungsten-bearing and gold-bearing regional ore-magmatic systems (ore regions, belts, zones and areas) are characterized by correlation of deep gradient density anomalies in the crust and upper mantle with the extensivity of superficial ore mineralization. Tin-ore deposits are mainly connected with density heterogeneities of the upper crust layer (up to a depth of 20 km), and tungsten, molibdenium and polymetallic deposits-with anomalies of the density gradient in the low crust layer (at a depth of 30 km) and in the upper mantle (at a depth of 60～70 km). gold-ore regions are characterized by the greatest vertical range of fluid-magmatic systems (about 100 km from the surface) and arethrough ones in relation to mantle and crust tectonic structures. Opportunity is shown for the 3D density gradient model of the Amur Province lithosphere to be applied for constructing the forecast metallogenic models.

关键词： spatial parameters, Tin-bearing, 3D density gradient model, lithosphere, Amur Province, heterogeneitic

gold and tin of fluid-magmatic systems:causes of combination-separation of concentration elements

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global geology 2009年第3期12卷 134-144页

作者： I.I. Fatyanov V.g. khomich Far East geological Institute Far Eastern Branch of Russian Academy of Sciences

The aim of the investigation is to reveal possible causes of isolation and co-occurrence of the economically significant concentrations of gold and tin. Comparative analysis of the different-rank factors that influenced migration and concentration of these elements show that different geochemical properties of Au and Sn are responsible for isolation of their big concentrations giving rise to independent metallogenic provinces, zones, and ore nodes. These differences resulted in individualization of the element migration ways to the level of ore concentration within the fluid-magmatie columns. Three main factors influenced the Au and Sn migration activity： different patterns of metal connection with the meh structure, different relation with oxygen, and different relation with other strong oxidizers. By the moment when ore-bearing fluid became isolated from magmas, the metallogenic signature of the melts, contrasting in redox-potential, had already been defined that was confirmed by the fact that tin ores associate predominantly with the granitoids of ilmenite series and gold ores - with those of magnetite series. The fluid-magmatic systems with an intermediate degree of the melt reduction-oxidation may be considered the potential producers of the combined metal concentrations. In these cases, the combined con- centrating of tin and gold is plagued by an opposite direction of the oxidation-reduction reactions when their most common minerals are formed： the main migration form of Sn^＋2 must be oxidized （with cassiterite portioning） , and the forms of Au^＋ or Au^＋3 must be reduced （with native gold portioning）. Probably, because of this the combined tin and gold concentrations are dominated by one of the metals with a tendency of accumulation in different-stage mineral complexes.

关键词： gold tin migration concentrating fluid-magmatic systems redox-potential

Deep-seated structure and gold content of Russia and China contiguous territories

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global geology 2010年第1期13卷 33-40页

作者： V.g. khomich YANg Yanchen N.g. Boriskina YAN Hongquan Far East geological Institute FEB of RAS Vladivostok 690022 Russia College of Earth Sciences Jilin University Changchun 130061 China

On the contiguous territories of southeastern Russia and northeastern China,many gold-bearing areas are conjugate in space with the gradient zones of the gravity *** gold-ore districts,defining in many respects the metallogenic signature of the region,are located on the joints of differently oriented gradient *** the best-studied districts,the Precambrian protrusions,staged distribution of magmatic chambers (by vertical) above the Mohorovicic discontinuity and restriction to the peripheral parts of intrusive massifs have been ***-type gold deposits in the studied ore-placer districts and nodes are often located on the areas of joint of the granitoid massifs and subvolcanic bodies with *** of areals of metasomatic alterations of rocks,placers,and ore occurrences of precious metals on such but poorly studied areas can serve as the basis for the revision and detailed forecasting-prospecting works to develop the mineral-raw material base of the region for precious metals.

关键词： gradient zone gravity field intrusive massif gold-bearing area gold content

Liver regeneration is associated with lipid reorganization in membranes of the endoplasmic reticulum

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Frontiers in Biology 2016年第5期11卷 396-403页

作者： Anatoly I. Bozhkov Natalia g. Menzyanova vadim V. Davydov Natalia I. Kurguzova vadim I. Sidorov Anastasia S. Vasilieva Research Institute of Biology of V.N. Karazin Kharkov National University sq. Svobody 4 61022 Kharkov Ukraine Institute of Fundamental Biology and Biotechnology of Siberian Federal University pr. Svobodny 79 660041 Krasnoyarsk Russia Ryazan State Medical University named after academician I.P.. Pavlov Visokovoltnaya 9 390026 Ryazan Russia

BACKgROUND： In recent years, an adaptive endoplasmic reticulum （ER） stress response has been actively investigated. The ER membrane, isolated from the intact and regenerating liver, may be an appropriate model for investigating the association between structural and functional characteristics of ER in vivo and their corresponding behavioral characteristics in vitro. The rate of lipid synthesis and that of intracellular lipid exchange between the ER and cytosol were investigated in the intact and regenerating liver （13 h after partial hepatectomy）. Particularly, membrane characteristics, surface potential, and glucose 6- phosphatase （g6Pase） activity were investigated, along with the degradation rate of g6Pase in vitro, which was estimated by the loss of g6Pase activity, formation of lipid peroxides, and size of excreted membrane vesicles. METHODS： The rate of lipid synthesis was determined by measuring the intensity of radioactive precursor （C^14-sodium acetate） in different fractions of lipids （phospholipids, non-esterified fatty acids, and triacylglycerides） after 30 min exposure. The rate of lipid metabolism was assessed by measuring the quantity oflipids with radioactive labels emerging in the cytosol of hepatocytes （CPM）. Viscosity and surface potential were determined by fluorescent probes. RESULTS： It was observed that after 13 h of partial hepatectomy, the rate of lipid synthesis in the ER of hepatocytes in the regenerating liver was 3 times lower than that in ER ofhepatocytes in the intact liver, wherein the rate of incorporation of newly synthesized lipids in cytosol was several times higher in the regenerating liver. Increase in the rate of exchange of neutral lipids in cells of the regenerating liver was accompanied by lipid reconstruction in the ER, changing the structural and functional characteristics of the membrane. Such membrane rebuilding also contributed to the rate of degradation of the ER in vitro, which that must be taken into account during d

关键词： regeneration neutral lipids microsomes in vitro

gold-Platinoid Mineralization of Metasomatically Altered Ultramafites in Precambrian Protrusions of Mamynsky geoblok

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global geology 2003年第2期8卷 160-165页

作者： V.g.khomich V.P.Molchanov N.g.Boriskina geological Institute of the Far Eastern Branch Russian Academy of Sciences Vladivostok 690022 RussiaGeological Institute of the Far Eastern Branch Russian Academy of Sciences Vladivostok 690022 RussiaGeological Institute of the Far Eastern Branch Russian Academy of Sciences Vladivostok 690022 Russia

On the contiguous territories of Russia and China, along the left and right banks of the Amur River (Heilongjiang Province of China, and Amur Oblast’ of Russia), several Precambrian protrusions (gonzhinsk, Mamynsk, Amurkhe, and Khumakhe) are known. On the Russian territory, along the setting and on the area of the protrusions, lode manifestations, precious-metal deposits, and gold-platinoid placers are known having the industrial importance. Ultramafites are metasomatically altered more likely by the action of the Late Paleozoic intrusions and produced by them hydrothermae, and are transformed into listvenites. It can be concluded that as one of the sources of precious metals in the placers were the aureoles of listvenitization. This is evidenced by the presence of talc (typomorphic mineral of apoultrabasites) inclusions together with Pt-, Pd- and Ir-bearing gold in the corrosive coatings of the primary platinoids. This conclusion requires the revision of the work strategy of prospecting the lode gold and PgE manifestations within the ore-placer node because apoultrabasites before were considered non-promising for precious metals.

关键词： ultramafites, gold-platinoid, mineralization, Precambrian, AmurRiver