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Model of tunnelling through periodic array of quantum dots in a magnetic field

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Chinese Physics B 2012年第11期21卷 412-415页

作者： I.yu.popov S.A.Osipov St.Petersburg National Research University of Information Technologies Mechanics and OpticsKronverkskiy49St.Petersburg 197101Russia

A two-dimensional periodic array of quantum dots with two laterally coupled leads in a magnetic field is considered. The model of electron transport through the system based on the theory of self-adjoint extensions of symmetric operators is suggested. We obtain the formula for the transmission coefficient and investigate its dependence on the magnetic field.

关键词： tunnelling nanostructure operator extension theory

Dirac operator on the sphere with attached wires

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Chinese Physics B 2016年第4期25卷 335-338页

作者： E N Grishanov D A Eremin D A Ivanov I yu popov Ogarev Mordovia State University Bolshevistskaya Str. 68 Saransk Russia ITMO University Kroverkskiy pr. 49 St. Petersburg 197101 Russia

An explicitly solvable model for tunnelling of relativistic spinless particles through a sphere is suggested. The model operator is constructed by an operator extensions theory method from the orthogonal sum of the Dirac operators on a semi- axis and on the sphere. The transmission coefficient is obtained. The dependence of the transmission coefficient on the particle energy has a resonant character. One observes pairs of the Breit-Wigner and the Fano resonances. It correlates with the corresponding results for a non-relativistic particle.

关键词： Dirac operator nanostructure tunnelling solvable model

A Model of Irregular Impurity at the Surface of Nanoparticle and Catalytic Activity

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Communications in Theoretical Physics 2012年第7期58卷 55-58页

作者： I.V.Blinova V.V.Gusarov I.yu.popov St.Petersburg National Research University of Information Technologies Mechanics and OpticsKronverkskiy49St.Petersburg 197101Russia St.Petersburg State Technological Institute (Technical University) Moskovskiy26St.Petersburg 190013Russia

A problem of nanocatalyst improvement is considered. The existence of irregularities at the surface of nanoparticle leads to the increasing of the surface/volume ratio and, correspondingly, to the improvement of the catalytic activity. But this impurity gives one an additional effect due to the change of the electronic density at the surface. We suggest simple model for the description of this effect. The model allows one to find the discrete spectrum of the Schrdinger operator for nanoparticle. Due to this impurity induced bound states the electron density increases near the surface. It leads to the increase of the catalytic activity of nanoparticles with surface impurities.

关键词：表面杂质纳米粒子催化活性模型描述电子密度纳米催化剂薛定谔方程离散频谱

Web service for biodiversity estimation using remote sensing data

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International Journal of Digital Earth 2008年第4期1卷 367-376页

作者： Mikhail A.popov Nataliia N.Kussul Sergey A.Stankevich Anna A.Kozlova Andrii yu.Shelestov Oleksii M.Kravchenko Mykhailo B.Korbakov Serhiy V.Skakun Scientific Centre for Aerospace Research of the Earth KievUkraine Department of Space Information Technologies and Systems Space Research Institute NASU-NSAUKievUkraine

This paper presents a technique for the assessment and mapping of land biodiversity by using remote sensing *** proposed approach uses a fuzzy model that encapsulates different ecological factors influencing *** imple... 详细信息

关键词： potential biodiversity index remote sensing data product pre-Black Sea region of the Ukraine web service

Measurement of Angular Distribution and Cross Section for ^(58)Ni(n,α)^(55)Fe Reaction at 5.1 MeV

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Chinese journal of nuclear physics 1995年第1期17卷 45-48页

作者： Tang Guo-you Bai Xin-hua Shi Zhao-min Chen Jin-xiang (Institute of Heary Ion Physics.Peking University.Beijing 100871)yu.M.Gledenov G.Khuuhenhuu yu.P.popov (Joint Institute for Nuclear Research,Dubna 141980.Russia) 北京大学重离子物理所北京 Joint Institute for Nuclear Research 俄罗斯

The α-particle angular distribution of 58Ni（n,α）55Fe was measured at incidentneutron energy 5.1 MeV using a grid ionization *** fluence was deter-mined by fission of 238*** present results were compared with the t... 详细信息

关键词： Grid ionization chamber Fission chamber Angular distribution Cross section

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俄罗斯东部地区的能源业:地区特征与脱碳

西伯利亚研究 2024年第3期51卷 5-18页

作者： [俄]Б.I.萨涅耶 A.Д.索科洛夫 И.IO.伊万诺娃 A.I.科尔涅耶夫 Γ.Γ.拉奇科夫 E.Л.马苏克 P.И.穆兹丘克 C.Л.波波夫 Л.H.塔卡什维利杨欣玥(译) 俄罗斯科学院西伯利亚分院Д.A.梅连季耶夫能源系统研究所俄罗斯科学院西伯利亚分院Д..A.梅连季耶夫能源系统研究所实验室俄罗斯科学院西伯利亚分院Д.A.梅连季耶夫能源系统研究所“亚洲能源基础设施”国际研究中心吉林大学东北亚研究院

鉴于俄罗斯燃料动力综合体技术的演进态势,俄联邦东部地区能源发展状况研究呈现出显著的复杂性与综合性。在地缘政治局势和对俄制裁压力带来的新挑战下,俄东部地区的特殊性和重要性愈发凸显。面对国际社会及俄联邦政府的经济脱碳要求,... 详细信息

鉴于俄罗斯燃料动力综合体技术的演进态势,俄联邦东部地区能源发展状况研究呈现出显著的复杂性与综合性。在地缘政治局势和对俄制裁压力带来的新挑战下,俄东部地区的特殊性和重要性愈发凸显。面对国际社会及俄联邦政府的经济脱碳要求,需对燃料动力综合体及能源系统发展的评估进行相应调整。深入分析俄联邦东部能源系统运行的地区特征,确定影响燃料动力综合体地区生产结构发展、能源消耗、交通基础设施建设、向亚太地区国家出口能源,以及向偏远地区用户供应能源效率的关键因素。明确俄东部地区能源系统在经济社会、基础设施、部门、燃料动力平衡及环境气候方面的关联性特征,并在制定能源低碳转型发展策略进程中予以充分考量。原文发表于俄罗斯《地区:经济学与社会学》杂志2023年第4期①,经作者同意在《西伯利亚研究》以中文刊发。

关键词：燃料动力综合体能源基础设施燃料动力平衡国内生产总值能耗燃料动力资源消耗污染物排放温室气体能源合作

THE USES OF APPLICATION OF SULFUR ORGANIC APROTIC SOLVENTS IN LITHIUM ENERGETICS

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THE USES OF APPLICATION OF SULFUR ORGANIC APROTIC SOLVENTS I...

The Paleogeographic Reconstruction for the Central Regions of the Western Siberian Basin in the Middle Jurassic Epoch

5th International Meeting on Lithium Batteries

作者： V.S.Kolosnitsyn A.V.popov yu.E.Nikitin Institute of Chemistry Bashkirian Research CentreUSSR Acad.Sci.Ural DepartmentUfaU.S.S.R.

＜正＞This paper is a brief summary of systematic investigations carried out to study the physico-chemical and electrochemical characteristics of the known and some new sulfur organic aprotic solvents and their electrolyte systems and,besides,to clear up the regularities of transport and electrode events and the energy properties of some model lithium batteries with liquid and solid ***,sulfones, and sulfates were selected the subjects of research.

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地学前缘 2009年第S1期16卷 193-193页

作者： Aleksey yu.popov Lyudmila G.Vakulenko Valeriy A.Kazanenkov Ilicha-21 Str. Novosibirsk 630090Russia

The complex investigation of the Bathonian sedimentary deposits in central regions of the WestSiberian basin was *** the basis both of lithofacial analysis of core clefts and the geophysical investigation data and taking into account the tectonic features of the Jurassic structural storey the sedimenttological model of deposits was built and the main regularities of its building were *** the initial stage the framework of alluvial lower plain

关键词： paleogeography lithology sediment-tary environments Middle Jurassic Western Siberia

A modification of Faddeev–popov approach free from Gribov ambiguity

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Communications in Theoretical Physics 2020年第12期72卷 137-144页

作者： Chong-yao Chen Fei Gao yu-Xin Liu Department of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China Center for High Energy Physics Peking UniversityBeijing 100871China Institut fur Theoretische Physik Universitaet HeidelbergPhilosophenweg 1669120 HeidelbergGermany

We propose a modified version of the Faddeev–popov(FP)quantization approach for nonAbelian gauge field theory to avoid Gribov *** show that by means of introducing a new method of inserting the correct identity into the Yang–Mills generating functional and considering the identity generated by an integral through a subgroup of the gauge group,the problem of Gribov ambiguity can be removed *** by handling the absolute value of the FP determinant with the method introduced by Williams and collaborators,we lift the Jacobian determinant together with the absolute value and obtain a local *** new Lagrangian will have a nilpotent symmetry which can be viewed as an analog of the Becchi–Rouet–Stora–Tyutin symmetry.

关键词： QCD quantization scheme Gribov copy non-Abelian field theory