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Combined Action of Lysozymes of Fresh-Water Bivalve Mollusks and Antibacterial Preparations against Some Clinical Strains of Microorganisms

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Journal of Pharmacy and Pharmacology 2014年第2期2卷 123-128页

作者： victoria v. Minakova alexey v. Pryakhin Galina N. Solovykh Irina v. Karnauldaova Department of Chemistry Department of Biomedical Sciences University of Dodoma Dodoma Tanzania Department of Chemistry Orenburg State Pedagogical University Orenburg 460000 Russia Department of Biology Orenburg State Medical Academy Orenburg 460000 Russia

The aim of the present study was to determine the MICs using broth microdilution method and their combination effect by （minimum inhibitory concentrations） of selected antibiotic agents determination of FICindex （fractional inhibitory concentrations）. Lysozyme Anodonta cygnea was more active than Lysozyme Uniopictorum, especially against Gram-negative bacterias. Combination of Macropen and Lysozyme Unio pictorum has a synergistic effect, while a separation of these antibacterial agents was not active against some of the strains of microorganisms.

关键词： Macrolide antibiotics lysozyme of bivalve fresh-water mollusks minimum inhibitory concentration synergy fractional inhibitory concentration.

Franson interferometry with a single pulse

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Frontiers of Optoelectronics 2018年第2期11卷 148-154页

作者： Eric Y. ZHU Costantino CORBARI alexey v. GLADYSHEv Peter G. KAZANSKY Li QIAN Department of Electrical and Computer Engineering University of Toronto Toronto ON M5S 3G4 Canada Optoelectronics Research Centre University of Southampton Southampton SO 17 1B J UK Fiber Optics Research Center of the Russian Academy of Sciences Moscow 119333 Russia

In classical optics, interference occurs between two optical fields when they are indistinguishable from one another. The same holds true in quantum optics, where a particular experiment, the Franson interferometer, involves the interference of a photon pair with a time-delayed version of itself. The canonical version of this interferom- eter requires that the time delay be much shorter than the coherence length of the pump used to generate the photon pair, so as to guarantee indistinguishability. However, when this time delay is comparable to the coherence length, conventional wisdom suggests that interference visibility degrades significantly. In this work, though, we show that the interference visibility can be restored through judicious temporal post-selection. Utilizing correlated photon pairs generated by a pump whose pulsewidth （460 ps） is shorter than the interferometer＇s time delay （500 ps）, we are able to observe a fringe visibility of 97.4＋4.3%. We believe this new method can be used for the encoding of high-dimensional quantum information in the temporal domain.

关键词： quantum optics quantum interference non-linear optics optical fibers

Chevron-type graphene nanoribbons with a reduced energy band gap:Solution synthesis,scanning tunneling microscopy and electrical characterization

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Nano Research 2020年第6期13卷 1713-1722页

作者： Ximeng Liu Gang Li alexey Lipatov Tao Sun Mohammad Mehdi Pour Narayana R.Aluru Joseph W.Lyding Alexander Sinitskii Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-ChampaignUrbanaIL61801USA Department of Electrical and Computer Engineering University of Illinois at Urbana-ChampaignUrbanaIL61801USA Department of Chemistry University of Nebraska-LincolnLincolnNE68588USA Department of Mechanical Science and Engineering University of Illinois at Urbana-ChampaignUrbanaIL61801USA Nebraska Center for Materials and Nanoscience University of Nebraska-LincolnLincolnNE68588USA

Graphene nanoribbons(GNRs)attract a growing interest due to their tunable physical properties and promise for device applications.A variety of atomically precise GNRs have recently been synthesized by on-surface and solution *** on-surface GNRs can be conveniently visualized by scanning tunneling microscopy(STM),and their electronic structure can be probed by scanning tunneling spectroscopy(STS),such characterization remains a great challenge for the solution-synthesized ***,we report solution synthesis and detailed STM/STS characterization of atomically precise GNRs with a meandering shape that are structurally related to chevron GNRs but have a reduced energy band *** ribbons were synthesized by Ni0-mediated Yamamoto polymerization of specially designed molecular precursors using triflates as the leaving groups and oxidative cyclodehydrogenation of the resulting polymers using Scholl *** ribbons were deposited onto III-v semiconducting InAs(110)substrates by a dry contact transfer ***-resolution STM/STS characterization not only confirmed the GNR geometry,but also revealed details of electronic structure including energy states,electronic band gap,as well as the spatial distribution of the local density of *** experimental STS band gap of GNRs is about 2 ev,which is very close to 2.35 ev predicted by the density functional theory simulations with GW correction,indicating a weak screening effect of InAs(110)***,several aspects of GNR-InAs(110)substrate interactions were also probed and analyzed,including GNR tunable transparency,alignment to the substrate,and manipulations of GNR position by the STM *** weak interaction between the GNRs and the InAs(110)surface makes InAs(110)an ideal substrate for investigating the intrinsic properties of *** of the reduced energy band gap of these ribbons,the GNR thin films exhibit appreciably high electrical conductivity and on/off ratios of about 1

关键词： graphene nanoribbons bottom-up synthesis electronic structure dry contact transfer scanning tunneling microscopy scanning tunneling spectroscopy

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氧化铁矿选矿工艺的理论进展和实验研究

国外金属矿选矿 1978年第1期 24-34页

作者： G.v.gubin 陈祥涌

报告中报道了制订克里沃依罗克和库尔斯克磁力异常区矿床的氧化铁矿选矿工艺的研究结果。研究了金属矿物和非金属矿物在强磁场中分离的规律性和凝聚的规律性。在研究的基础上制定了矿石分类法,从而可以根据物质组成来选择有效的工艺。... 详细信息

报告中报道了制订克里沃依罗克和库尔斯克磁力异常区矿床的氧化铁矿选矿工艺的研究结果。研究了金属矿物和非金属矿物在强磁场中分离的规律性和凝聚的规律性。在研究的基础上制定了矿石分类法,从而可以根据物质组成来选择有效的工艺。研究表明,在氧化矿磨矿时生成的大量的金属矿物细泥不经预先处理,在强磁场中不能回收。为了强化含大量氢氧化铁的细粒嵌布的矿石的分迭,建议应用选择性凝聚。在报告中列举了半工业试验结果和制订了各种物质组成的氧化矿的选矿流程,并附有技术经济评价。

关键词：假象赤铁矿矿石细粒嵌布岩相特征选择性凝聚库尔斯克磁力异常区连生体铁矿物金属矿物氧化铁矿微细矿粒磁选机磁力分选机选矿机械选矿工艺

Cyberbullying and Cyberstalking as a Moral and Legal Concept

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Cyberbullying and Cyberstalking as a Moral and Legal Concept

Phase-matched third-harmonic generation via doubly resonant optical surface modes in 1D photonic crystals

作者： Ivan Y.Lapshin alexey v.Klimakov Department of Ethics Faculty of Humanities and Social Sciences Peoples’ Friendship University of Russia (RUDN University)

Modern digital life can be characterized by both new possibilities and challenges. However, if we assume that digital life has its own natural course which establishes a balance between threats and promises, human culture always tends to reflect upon new experiences, communication methods and ways of behavior, some of them attract more attention and concern — problematic behavior and crimes in the first place. Some cybercrimes are just a new method to commit the offences already laid down in criminal codes. Cyberbullying and cyberstalking, on the other hand, offer new questions and challenges to courts and legislature. Nevertheless, the problem of cyberbullying and cyberstalking is among the most evident and maybe the least studied, and it is the problem that involves both law and ethics. Our study is an attempt to review the traditional concepts of stalking and bullying, to trace their transitions and to summarize the related problems.

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Light(Science & Applications) 2016年第1期5卷 424-429页

作者： valery N Konopsky Elena v Alieva Sergey Yu Alyatkin alexey A Melnikov Sergey v Chekalin vladimir M Agranovich Institute of Spectroscopy Fizicheskaya5TroitskMoscow 142190Russia Moscow Institute of Physics and Technology Institutskiy per.9Dolgoprudny 141700Russia

Efficient nonlinear conversion requires that interacting optical waves maintain a consistent phase relationship when traveling in a medium despite its *** phase-matching,which is often used to compensate for the dispersion,is not applicable to optically isotropic nonlinear ***,we present a one-dimensional photonic crystal structure that allows the propagation of optical surface waves,both at the fundamental and third-harmonic frequencies,as an efficient medium for phasematched third-harmonic generation.A unique advantage of this structure is that the effective refractive indices for the surface waves are similar to the refractive index of air at both *** allows phase-matching between the first and third harmonics,and a visible collinear beam of the third harmonic is produced at the prism-coupled ***,these optical surface waves propagate over long distances even if a lossy nonlinear nanofilm is deposited onto the photonic crystal *** provide experimental results for third-harmonic generation at a wavelength of 410 nm for a bare dielectric Ta2O5/SiO2 multilayer structure and for the same structure coated with a 15-nm GaAs film.

关键词： nonlinear optics optical surface waves photonic crystals

The Impact of Aluminum-Containing Set Accelerators on Sulfate Resistance of Portland Cement Compositions

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Materials Sciences and Applications 2013年第12期4卷 29-34页

作者： alexey S. Brykov Andrey S. vasiliev Maxim v. Mokeev Department of Technology of Constructional and Special Binders Faculty of Chemistry of Substances and Materials Saint Petersburg State Institute of Technology Saint Petersburg Russia Institute of Macromolecular Compounds Russian Academy of Sciences Saint Petersburg Russia

This study contains comparative research of sulfate resistance of ordinary Portland cement pastes with addition of basic aluminum sulfate (hydroxosulfate, Al(OH)1.78(SO4)0.61) and amorphous Al(OH)3. Over 3 months of storing in sodium sulfate solution, the most significant expansion and deterioration occur in case of samples with aluminum hydroxide. During sulfate resistance test, the ratio between aluminum nuclei in AFt (ettringite) and AFm phases was studied by 27Al-MAS NMR, and the impact of aluminum-containing admixtures on this ratio was specified. In accordance with NMR data, in samples with Al(OH)3, the rate of secondary ettringite formation becomes noticeable after one month of storing in sulfate solution. For samples with Al(OH)1.78(SO4)0.61, the rate of elongation and temper of changes in molar ratio between sulfoaluminate phases were comparable with reference samples without admixtures.

关键词： Portland Cement Hydration Set Accelerator Basic Aluminum Sulfate Aluminum Hydroxide Sulfate Resistance MAS NMR Spectroscopy

A Study of the Thermal Decomposition of CH3131I in a Gas Flow in the Presence of “Fizkhmin”TM Granulated Materials

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Journal of Applied Mathematics and Physics 2016年第8期4卷 1522-1527页

作者： alexey A. Bessonov Sergey A. Kulyukhin Lubov v. Mizina Igor A. Rumer Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences Moscow Russia

Thermal decomposition of a volatile organic compound of radioactive iodine, methyl iodide CH3131I, in a gas flow in the presence of various modifications of “Fizkhmin”TM granulated materials based on silica gel impregnated with d-elements was studied. Under comparable experimental conditions, 97% - 99% decomposition of CH3131I is achieved at ~770?C without sorbents and at ~540?C and ~465?C in the presence of straight silica gel and of the material based on it, impregnated with compounds of Ni or its mixture with Cu (8 - 10 wt%), respectively.

关键词： Iodine-131 Trapping Methyl Iodide Thermal Decomposition Sorption

Synthesis of Hollow Nanoparticles γ-Al2O3

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Advances in Nanoparticles 2013年第2期2卷 120-124页

作者： Dmitry v. Smovzh Nikolay A. Kalyuzhnyi alexey v. Zaikovsky Sergey A. Novopashin Kutateladze Institute of Thermophysics of Siberian Branch of Russian Academy of Sciences Novosibirsk Russia

The formation of hollow nanoparticles of alumina was detected when nanostructured carbon–aluminum material, synthesized by composite electrode sputtering in an electric arc, was annealed in oxygen. The synthesized material was characterized by the methods of transmission electron microscopy, thermogravimetry, and roentgen-phase analysis. It is shown that the alumina is the γ-phase;the typical size of particles is 6 - 12 nm and they have a wall thickness of 2 - 3 nm. The mechanism of formation of the hollow nanoparticles of alumina is suggested.

关键词： Hollow Nanoparticles Аlumina Arc Discharge