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Suppressing small-scale self-focusing of high-power femtosecond pulses

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High Power Laser Science and Engineering 2023年第2期11卷 103-109页

作者： Mikhail Martyanov vladislav Ginzburg Alexey Balakin Sergey Skobelev Dmitry Silin Anton Kochetkov Ivan Yakovlev Alexey Kuzmin Sergey Mironov Ilya Shaikin Sergey Stukachev Andrey Shaykin Efim Khazanov Alexander Litvak Institute of Applied Physics of the Russian Academy of Sciences Nizhny NovgorodRussia

It was shown experimentally that for a 65-fs 17-J pulse,the effect of filamentation instability,also known as small-scale self-focusing,is much weaker than that predicted by stationary and nonstationary theoretical models for high B-integral *** this discrepancy has been left unexplained at the moment,in practice no signs of filamentation may allow a breakthrough in nonlinear pulse post-compression at high laser energy.

关键词： B-integral cubic Kerr nonlinearity filamentation instability high-power femtosecond laser nonlinear post-compression

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非洲猪瘟在欧洲传播的巨大风险

国外畜牧学（猪与禽） 2015年第3期35卷 16-18页

作者：毛慧 vladislav Vorotnikov Vincent ter Beek

虽然许多人都知道非洲猪瘟已侵入欧盟,但只有少数人对此引发的危害发出警告。现在首个非洲猪瘟病例已经在立陶宛和波兰得到了确诊,由此引出了2个问题:非洲猪瘟会对经济造成怎样的影响?如何才能阻断其传播?

关键词：非洲猪瘟经济损失野猪危险警告

Mechanism of Chalcopyrite Leaching in Oxidative Sulphuric Acid Solution

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Journal of Chemistry and Chemical Engineering 2011年第1期5卷 37-41页

作者： Miroslav D. Sokic Branislav R. Markovic vladislav Lj. Matkovic Nada D. Strbac Dragana T. Zivkovic Institute for Technology of Nuclear and Other Mineral Raw Materials 86 Franchet d ＇Esperey Street Belgrade 11000 Serbia Technical Faculty at Bor University of Belgrade Bor 19210 Serbia

The mechanism of the leaching process of chalcopyrite concentrate with sodium nitrate in sulphuric acid solution were studied and discussed. Chemical reactions of leaching and their thermodynamic probabilities are predicted based on the calculated Gibbs energies and analysis of E-pH diagrams. Experimental data, thermodynamic analysis, chemical, XRD, and SEM/EDX analyses of concentrate and the leach residues, were performed to develop a better understanding of the chemical reactions that took place in the system. Elemental sulphur was formed as the main leaching product, precipitated at the particle surfaces and tended to inhibit the leaching rate.

关键词： Chalcopyrite leaching mechanism sulpruric acid sodium nitrate.

Large-diameter indium antimonide microwire based broadband and robust optical switch

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Science China(Physics,Mechanics & Astronomy) 2023年第2期66卷 68-78页

作者： Fei Lou Xiangpeng Cui Xinyue Sheng Chunyan Jia Shuaiyi Zhang Xia Wang vladislav Khayrudinov Baitao Zhang Shande Liu Wing Yim Tam Harri Lipsanen He Yang Jingliang He Shandong Advanced Optoelectronic Materials and Technologies Engineering Laboratory of Qingdao School of Mathematics and PhysicsQingdaoUniversityof Scienceand TechnologyQingdao266061China School of Instrumenation and Optoeletronic Engineering Beihang University Beijing 100191China Department of Electronics and Nanoengineering Aalto Universiy EspooFl-0o076Finland State Key Laboratory of Crystal Materials Institute of Novel Semiconductors Shandong University.Jinan 250100China College of Electronic and Information Engineering Shandong University of Science and TechnologyQingdao 266590China Depariment of Physics and Wiliam Mong Institute of Nano Science and Technology Hong Kong University of Science and Technology.HongKongChina

Various nanophotonic devices based on semiconductor wires with a diameter of several ten nanometers have been ***,studying the optoelectronics properties and performance of such devices based on large-diameter wires is interesting and ***,we successfully grew the micronsized indium antimonide(InSb) wires,and examined their nonlinear optical properties by Z-scan and I-scan(power-dependent) methods within the wavelength range of 0.8-2.8 μ***,we demonstrated InSb micro wires(MWs) working as an effective and robust optical switch within 1-2.8 μm *** findings can open possibilities for research on more large-diameter MWs made from other semiconductor materials for photonic and electronic devices.

关键词： optical antimonide InSb

Photon retention in coherently excited nitrogen ions

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Science Bulletin 2021年第15期66卷 1511-1517,M0003页

作者： Jinping Yao Luojia Wang Jinming Chen Yuexin Wan Zhihao Zhang Fangbo Zhang Lingling Qiao Shupeng Yu Botao Fu Zengxiu Zhao Chengyin Wu vladislav VYakovlev Luqi Yuan Xianfeng Chen Ya Cheng State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science Shanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China University of Chinese Academy of Sciences Beijing 100049China School of Physical Science and Technology ShanghaiTech UniversityShanghai 200031China Department of Physics National University of Defense TechnologyChangsha 410073China State Key Laboratory for Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China Texas A&M University College StationTX 77843USA Shanghai Research Center for Quantum Sciences Shanghai 201315China Jinan Institute of Quantum Technology Jinan 250101China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan 250358China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Quantum coherence in quantum optics is an essential part of optical information processing and light *** metal vapors,despite the numerous shortcomings,are traditionally used in quantum optics as a working medium due to convenient near-infrared excitation,strong dipole transitions and long-lived ***,we proposed and experimentally demonstrated photon retention and subsequent re-emittance with the quantum coherence in a system of coherently excited molecular nitrogen ions(N_(2)^(+))which are produced using a strong 800 nm femtosecond laser *** photon retention,facilitated by quantum coherence,keeps releasing directly-unmeasurable coherent photons for tens of picoseconds,but is able to be read out by a time-delayed femtosecond pulse centered at 1580 nm via two-photon resonant absorption,resulting in a strong radiation at 329.3 *** reveal a pivotal role of the excited-state population to transmit such extremely weak re-emitted photons in this *** new finding unveils the nature of the coherent quantum control in N_(2)^(+)for the potential platform for optical information storage in the remote atmosphere,and facilitates further exploration of fundamental interactions in the quantum optical platform with strong-field ionized molecules.

关键词： Quantum coherence Photon retention Coherent quantum control Strong-field ionized molecules

Kinetics of the Chlorination of Copper （I） Sulphide by Calcium Chloride in the Presence of Oxygen

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Journal of Chemistry and Chemical Engineering 2011年第3期5卷 264-268页

作者： Branislav R. Markovie Miroslav D. Sokie vladislav Lj. Matkovic Dragana T. Zivkovic Dragan M.Manasijevic Institute for Technology of Nuclear and Other Mineral Raw Material 86 Franchet d＇Esperey Street Belgrade 11000 Serbia Technical Faculty University of Belgrade 12 VJ Street Bor 19210 Serbia

The chemism of the chlorination of copper （I） sulphide by calcium chloride in the presence of oxygen has been determined based on the thermodynamic analysis in the Cu2S-CaCl2-O2 system as well as characterization of used raw materials and obtained products. The influence of temperature （from 473 to 773 K）, time （from 2 to 120 min）, oxygen flow （from 20 to 100 L/h） and calcium chloride quantity （from 5 to 40%） on the chlorination degree has been investigated. Kinetic analysis and the activation energy values of 20.89 kJ/mol showed that the chlorination of copper （I） sulphide by calcium chloride in the presence of oxygen is diffusion controlled.

关键词： Chemism kinetic chlorination copper (I) sulphide calcium chloride oxygen.

Novel materials for solid oxide fuel cells cathodes and oxygen separation membranes:Fundamentals of oxygen transport and performance

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Carbon Resources Conversion 2020年第1期3卷 112-121页

作者： vladislav A.Sadykov Ekaterina M.Sadovskaya Nikita F.Eremeev Elena Yu.Pikalova Nina M.Bogdanovich Elena A.Filonova Tamara A.Krieger Yulia E.Fedorova Alexey V.Krasnov Pavel I.Skriabin Anton I.Lukashevich Robert Steinberger-Wilckens Izaak C.Vinke Federal Research Center Boreskov Institute of Catalysis SB RAS 630090 NovosibirskRussia Novosibirsk State University 630090 NovosibirskRussia Institute of High Temperature Electrochemistry UB RAS 620137 YekaterinburgRussia Ural Federal University 620002 YekaterinburgRussia University of Birmingham EdgbastonBirmingham B152TTUK Forschungszentrum Jülich GmbH 52425 JülichGermany

In the field of modern hydrogen energy,obtaining pure hydrogen and syngas and then being able to use them for green energy production are significant *** solid oxide fuel cells(SOFC)and catalytic membranes for oxygen separation as well as materials for these devices is one of the most likely ways to solve these *** this work,the authors’recent studies in this field are reviewed;the fundamentals of developing materials for SOFC cathodes and oxygen separation membranes’permselective layers based on research of their oxygen mobility and surface reactivity are ***-Popper phases Ln_(2-x)Ca_(x)NiO_(4+δ)(LnCNO)and perovskite-fluorite nanocomposites PrNi_(0.5)Co_(0.5)O_(3-δ)-Ce_(0.9)Y_(0.1)O_(2-δ)(PNC-YDC)were studied by isotope exchange of oxygen with C_(18)O_(2)and^(18)O_(2)in flow and closed *** LnCNO a high oxygen mobility was shown(D*~10^(-7)cm^(2)/s at 700℃),being provided by the cooperative mechanism of oxygen migration involving both regular and highly-mobile interstitial *** PNC-YDC dominated a wide fast diffusion channel via fluorite phase and interphases due to features of the redistribution of cations resulting in superior oxygen mobility(D*~10^(-8)cm^(2)/s at 700℃).After optimization of composition and nanodomain structure of these materials,as cathodes of SOFC they provided a high power density,while for asymmetric supported oxygen separation membranes-a high oxygen permeability.

关键词： Solid oxide fuel cells Oxygen separation membranes Oxygen mobility Perovskites Nanocomposites Ruddlesden-Popper phases

“Weaponizing”Humor in Bulgarian Political Rhetoric:Limits of Political Speech in National and Transnational Perspectives

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Chinese Business Review 2022年第4期21卷 132-151页

作者： vladislav Vasilev Sofia University St.Kliment OhridskiBulgaria

In the wake of internet spoiling global audiences with memes and political satire,humor established itself as an intrinsic part of contemporary political rhetoric.A universal notion of humor and free speech,however,yet remain an abstract concept as the national context and the meta-narrative allow partisan interpretation,thus drawing the line between laughter and ***,the clichéd view of the satirist as a rebel,“speaking truth to power”is struggling to fit the image of the right-wing populists,using humor as a tool to aid marketing political ideas both nationally and *** respect to political speech,while humor is an eligible means for singling out political allies globally,it is the national state that is the agora on which standards and limits of free speech,ergo what is humor,are *** article tackles how humor in Bulgarian election campaign in 2021-2022 is used to serve the populist right-wing agenda in pursuit of political advantages over opponents and how the usage of global context fits in the local *** a field of political distrust and competing polar ideologies,the problem resides in how the national nuances of defining humor affect political meanings,identity,and the local discourse on culture *** article also takes a transnational comparative approach to political humor in the context of its partisan exploit for populist political purposes in European democracies.

关键词： free speech Bulgaria political humor populism elections far-right populism

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“专业+俄语”培养模式下的俄语口语教学

林区教学 2018年第10期 64-67页

作者：刘倩 Янченко Владислав Дмитриевич 黑龙江大学中俄学院哈尔滨150080 莫斯科国立师范大学语言系莫斯科119435

在中俄两国各领域合作日益加强的今天,社会急需既懂人文科学或自然科学专业知识,又能熟练运用俄语的复合型人才。论文界定"俄语口语教学"的范围,阐明黑龙江大学中俄学院在"专业+俄语"培养模式下法学、金融学、应用物理学、生物技术、化... 详细信息

在中俄两国各领域合作日益加强的今天,社会急需既懂人文科学或自然科学专业知识,又能熟练运用俄语的复合型人才。论文界定"俄语口语教学"的范围,阐明黑龙江大学中俄学院在"专业+俄语"培养模式下法学、金融学、应用物理学、生物技术、化学工程与工艺、数学与应用数学等六个专业开设的"俄语口语教学"的重要性及必要性,归纳总结"专业+俄语"培养模式下的俄语口语教学的特点,提出在"专业+俄语"培养模式下的俄语口语教学所面临的任务。

关键词：中俄合作 “专业+俄语”培养模式俄语口语教学