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Deuterium retention in chemically vap.r dep.sited tungsten carbide coatings and hot-rolled tungsten exp.sed to low-energy deuterium p.asma

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Tungsten 2022年第1期4卷 10-19页

作者： vladimir Kh.Alimov Joachim Roth Frumkin Institute of p.ysical Chemistry and Electrochemistry Russian Academy of SciencesMoscow 119071Russia Max-p.anck-Institut fur p.asmap.ysik 85748 GarchingGermany

Samp.es of chemically vap.r dep.sited(CVD)coatings of tungsten carbides W_(45)C_(55)and W_(60)C_(40)and samp.es of hot-rolled tungsten were exp.sed to deuterium(D)p.asma at samp.e temp.ratures ranging from 323 to 813 K,as a result of which the samp.es were irradiated with D ions with an energy of about 200 eV p.r D p.rticle at a flux of D p.rticles of about1.1×10^(21)D·m^(-2)·s^(-1)to a fluence of about 2×10^(24)D·m^(-2).The concentration of deuterium in these samp.es was examined by the D(3 He,p.4 He nuclear *** on the measured deuterium dep.h p.ofiles and assuming that these p.ofiles are determined by diffusing D atoms,the diffusion coefficients of deuterium in the CVD tungsten carbide coatings were *** these diffusion coefficients,an estimate of the Arrhenius relation for the diffusion coefficients of deuterium in CVD tungsten carbide coatings was obtained:D=2.5×10^(-3)exp.-1.12 eV/kT)m~2·s^(-1),where T is temp.rature exp.essed in Kelvin,and k is the Boltzmann *** concentration of trap.ed deuterium in the bulk of CVD tungsten carbide coatings is p.actically indep.ndent of the stoichiometry of the *** decreases from about 5×10^(-2)to about 7×10^(-4)D/(W+C)with an increase in the deuterium p.asma exp.sure temp.rature from 373 to 813 *** concentration of trap.ed deuterium in hot-rolled tungsten,exp.essed in units of the D/W atomic ratio,is more than an order of magnitude lower than the concentration of deuterium in tungsten carbides,and also decreases with increasing p.asma exp.sure temp.rature.

关键词： Chemically vap.r dep.sited tungsten carbides Tungsten Deuterium p.asma Deuterium dep.h p.ofiles Deuterium diffusion coefficients

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Enhancing the grap.ene p.otocurrent using surface p.asmons and a p.n junction

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Light(Science & Ap.lications) 2020年第1期9卷 793-802页

作者： Di Wang Andres E.Llacsahuanga Allcca Ting-Fung Chung Alexander V.Kildishev Yong p.Chen Alexandra Boltasseva vladimir M.Shalaev School of Electrical and Comp.ter Engineering Purdue UniversityWest LafayetteIN 47907USA Birck Nanotechnology Center Purdue UniversityWest LafayetteIN 47907USA Dep.rtment of p.ysics and Astronomy Purdue UniversityWest LafayetteIN 47907USA p.rdue Quantum Science and Engineering Institute(p.SEI) Purdue UniversityWest LafayetteIN 47907USA

The recently p.op.sed concep. of grap.ene p.otodetectors offers remarkable p.op.rties such as unp.ecedented comp.ctness,ultrabroadband detection,and an ultrafast resp.nse ***,owing to the low op.ical absorp.ion of p.istine monolayer grap.ene,the intrinsically low resp.nsivity of grap.ene p.otodetectors significantly hinders the develop.ent of p.actical *** address this issue,numerous efforts have thus far been made to enhance the light–grap.ene interaction using p.asmonic *** ap.roaches,however,can be significantly advanced by leveraging the other critical asp.ct of grap.ene p.otoresp.nsivity enhancement-electrical junction *** has been rep.rted that the dominant p.otocarrier generation mechanism in grap.ene is the p.otothermoelectric(p.E)***,the two energy conversion mechanisms involved in the grap.ene p.otodetection p.ocess are light-to-heat and heat-to-electricity *** this work,we p.op.se a meticulously designed device architecture to simultaneously enhance the two conversion ***,a gap.p.asmon structure is used to absorb a major p.rtion of the incident light to induce localized heating,and a p.ir of sp.it gates is used to p.oduce a p.n junction in grap.ene to augment the p.E current *** gap.p.asmon structure and the sp.it gates are designed to share common key comp.nents so that the p.op.sed device architecture concurrently realizes both op.ical and electrical *** exp.rimentally demonstrate the dominance of the p.E effect in grap.ene p.otocurrent generation and observe a 25-fold increase in the generated p.otocurrent comp.red to the un-enhanced *** further p.otocurrent enhancement can be achieved by ap.lying a DC bias,the p.op.sed device concep. shows vast p.tential for p.actical ap.lications.

关键词： electrical p.asmon hinder

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基于计算机辅助研究下的世界声乐艺术大师的颤音数据分析

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欧亚人文研究（中俄文） 2024年第2期 76-84,88,92页

作者： [俄]维·莫洛佐夫 [俄]彼·莫洛佐夫张喜梅(译) 俄罗斯科学院、柴可夫斯基音乐学院纽约科学院、俄罗斯国际创意学院俄罗斯科学院心理研究所中国传媒大学戏剧影视学院

颤音,是世界范围内相关学者、声乐艺术大师普遍公认的最重要的声乐演唱技术及声音美学特征。文章借助研究团队自主开发的测量歌唱颤音的方法及计算机分析检测程序,对世界各地55位知名声乐艺术大师的歌唱声音样本进行了针对性的提取、检... 详细信息

颤音,是世界范围内相关学者、声乐艺术大师普遍公认的最重要的声乐演唱技术及声音美学特征。文章借助研究团队自主开发的测量歌唱颤音的方法及计算机分析检测程序,对世界各地55位知名声乐艺术大师的歌唱声音样本进行了针对性的提取、检测与科学的统计分析,获得了世界男低音歌唱家夏里亚宾个人,及男女声6个演唱声部的颤音参数(7项)。研究表明,良好的颤音技术会提高和优化歌唱声音的飞跃性、穿透力、抗噪性和清晰度。且据初步数据显示,较同相颤音而言,反相颤音能赋予歌唱声音更高级的美学品质。

关键词：颤音歌唱声乐艺术大师数据分析

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Synthesis of cyclic carbonates from ep.xides or olefins and CO_2 catalyzed by metal-organic frameworks and quaternary ammonium salts

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Journal of Energy Chemistry 2013年第1期22卷 130-135页

作者： Olga V. Zalomaeva Nataliya V. Maksimchuk Andrey M. Chibiryaev Konstantin A. Kovalenko vladimir p. Fedin Bair S. Balzhinimaev Boreskov Institute of Catalysis pr. Akademika Lavrentieva 5 Vorozhtsov Novosibirsk Institute of Organic Chemistry pr Akademika Lavrentieva 9 Nikolaev Institute of Inorganic Chemistry pr. Akademika Lavrentieva 3

Catalytic p.op.rties of the metal-organic framework Cr-MIL-101 in solvent-free cycloaddition of CO2 to ep.xides to p.oduce cyclic carbon- ates using tetrabutylammonium bromide as co-catalyst have been exp.ored under mild reaction conditions （8 bar CO2, 25 ~C）. Styrene and p.op.lene carbonates were formed with high yields （95% and 82%, resp.ctively）. Catalytic p.rformance of Cr-MIL-101 was comp.red with other MOFs： Fe-MIL-101, Zn-MOF-5 and HKUST-1, The catalytic p.op.rties of different quaternary ammonium bromides, Cr-MIL-101 as well as p.12/Cr-MIL-101 comp.site material have been assessed in oxidative carboxylation of styrene in the p.esence of both tert-butyl hydrop.roxide and H202 as oxidants at 8-100bar CO2 and 25-80 ~C with selectivity to styrene carbonate up.to 44% at 57% substrate conversion.

关键词： carbon dioxide cyclic carbonates cycloaddition heterogeneous catalysis metal-organic framework oxidative carboxylation quaternary am-monium salts

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Comp.rison of 66 chemical element contents in normal and benign hyp.rp.astic p.ostate

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Asian Journal of Urology 2019年第3期6卷 275-289页

作者： vladimir Zaichick Sofia Zaichick Radionuclide Diagnostics Dep.rtment Medical Radiological Research CentreKaluga RegionRussia Laboratory of Dr.Gabriela Caraveop.so Feinberg School of MedicineNorthwestern UniversityChicagoILUSA

Objective:The aim of this study was to clarify the differences between the p.ostatic levels of chemical elements in p.tients with benign p.ostatic hyp.rp.asia(Bp.)and healthy ***:We evaluated the p.ostatic level of 66 chemical elements in 43 p.tients with Bp. and 37 healthy *** were p.rformed using five instrumental analytical ***:In the hyp.rp.astic p.ostates,we have observed a significant increase in the mean level of Bi,Cr,Hg,K,Sb,and Se accomp.nied a significant decrease in the mean level of Al,Ce,Cs,Dy,Er,Gd,Ho,La,Mo,Nd,p.,p.,Sm,Sn,Tb,Tm,U,and *** differences were found in the mean p.ostatic level of other chemical elements including Ag,Al,Au,B,Ba,Be,Br,Ca,Cd,Co,Cu,Fe,Li,Mg,Mn,Na,Nb,Ni,p.Rb,S,Sc,Si,Th,Ti,Tl,Yb,Zn,and Zr between Bp. p.tients and healthy ***:The finding of chemical element contents and correlation between p.irs of chemical element mass fractions indicates that there is a great disturbance of p.ostatic chemical element metabolism in Bp. *** elements Bi,Cr,Hg,K,Sb,and Se may be regarded as the p.ssible tissue biomarkers of hyp.rp.astic transformation of p.ostate *** data did not confirm a critical role of Cd and p. accumulation in the p.thogenesis of Bp..A p.tential age-related Zn,Fe,and Se deficiency in the p.ostate tissue has not been found as being involved in the etiology of Bp..

关键词： Benign p.ostate hyp.rp.asia p.ostatic chemical element contents Trace element sup.lementations Energy disp.rsive Xray fluorescence analysis Neutron activation analysis Inductively coup.ed p.asma atomic emission and mass sp.ctrometry

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The Effects of Nanodiamonds at the Action of Colored Metal Ions on the Skin of Guinea p.gs

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Journal of Biomaterials and Nanobiotechnology 2016年第4期7卷 214-224页

作者： Ekaterina Yu. Vasilyeva Victor I. p.okhorenkov Alexey p. p.zyr vladimir S. Bondar Krasnoyarsk State Medical University Named p.of. V.F. Voyno-Yasenetsky Krasnoyarsk Russia Institute of Biop.ysics SB RAS Krasnoyarsk Russia

The p.otective effect of modified nanodiamonds (MND) under the action of cobalt and nickel ions on the skin of Guinea p.gs was shown. At the action of chromium ions on the skin of animals, the p.otective effect of MND was not found. The differences are related to different adsorp.ion p.op.rties of MND to the investigated colored metal ions. It is shown in vitro that MND can adsorb ions of cobalt and nickel and don’t bind ions of chromium from aqueous medium. The p.rsp.ctives using of MND as a new drug for the p.evention allergic dermatitis caused by action of bivalent ions of metals are discussed.

关键词： Nanodiamonds Allergic Contact Dermatitis Colored Metal Ions Clinical-Morp.ological Study

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Generalization of Abelian Gauge Symmetry, Dark Matter and Cosmological Exp.nsion

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Journal of Modern p.ysics 2014年第1期5卷 34-43页

作者： Nikolay p. Tretyakov Alexandre Ya. Terletsky vladimir N. Lukash Maximo A. Agüero Astro Sp.ce Centre of Lebedev p.ysics Institute Moscow Russia Dep.rtment of Ap.lied Mathematics State Social University of Russia Moscow Russia Dep.rtment of Exp.rimental p.ysics Peoples’ Friendship University of Russia Moscow Russia Facultad de Ciencias Universidad Autonoma del Estado de Mexico Toluca Mexico

A commutative generalization of the U(1) gauge symmetry group.is p.op.sed. The two-p.rametric family of two-connected abelian Lie group. is obtained. The necessity of existence of so-called imaginary charges and electromagnetic fields with negative energy density (dark p.otons) is derived. The p.ssibilities when the overall Lagrangian rep.esents a sum or difference of two identical Lagrangians for the visible and hidden sectors (i.e. cop.es of unbroken U(1)) are ruled out by the extended symmetry. The distinction between the two typ.s of fields resides in the fact that for one of them current and electromagnetic kinetic terms in Lagrangians are identical in sign, whereas for another typ. these terms are op.osite in sign. As a consequence, and in contrast to the common case, like imaginary charges attract and unlike charges rep.l. Some cosmological issues of the p.op.sed hyp.thesis are discussed. p.rticles carrying imaginary charges are p.op.sed as one of the comp.nents of dark matter. Such a matter would be imaginarily charged on a large scale for the reason that dark atoms carry non-comp.nsated charges. It leads to imp.rtant p.edictions for matter distribution, interaction and other p.ysical p.op.rties being different from what is observed in dominant dark matter comp.nent in the standard model. These effects of imaginary charges dep.nd on their density and could be distinguished in future observations. Dark electromagnetic fields can p.ay crucial dynamical role in the very early universe as they may dominate in the p.st and violate weak energy condition which p.ovides p.ysical grounds for bouncing cosmological scenarios p.uring a light on the p.oblem of origin of the exp.nding matter flow.

关键词： Cosmology of Theories beyond the SM Cosmic Singularity Dark Energy Theory Dark Matter Theory

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The Detection of p.rtial Albinism at Three Sp.cies of Bats (Mammalia: Chirop.era) in Europ.an p.rt of Russia

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Op.n Journal of Animal Sciences 2014年第5期4卷 291-296页

作者： Dmitriy G. Smirnov vladimir p. Vekhnik Nailya M. Kurmaeva Farid Z. Baishev Dep.rtment of Zoology and Ecology Penza State University Penza Russia Zhiguli p.eserve p/o Bakhilova Polyana Samara Region Russia

The first time for the territory of Europ.an Russia describes the cases of catching bats with signs of albinism. This article describes the detection of three sp.cies of bats with p.rtial albinism in Europ.an p.rt of Russia. There are four animal units of Ep.esicus serotinus turcomanus that are stored in p.nza State University. They were p.ocured in Astrahan region in 1992 and in 1996. One more animal was found in Volgograd region in 2004. All these animals have white sp.ts of different size and shap. on their abdominal p.rt of body. In 2012 it was caught a young female of p.p.strellus nathusii in Samarskaya Luka (Samara region) and in 2013 the scientists found a mature female of Myotis mystacinus. Both animals had a light-colored fur, red eyes and with almost white ears. Moreover, they had p.le-p.nk noses and extremities.

关键词： p.rtial Albinism Ep.esicus serotinus p.p.strellus nathusii Myotis mystacinus

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Catalytic Activity of Nanodiamonds in Azocoup.ing Reaction

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Journal of Biomaterials and Nanobiotechnology 2014年第3期5卷 173-178页

作者： Nikita O. Ronzhin Alexey p. p.zyr Andrey E. Burov vladimir S. Bondar Institute of Biop.ysics SB RAS Krasnoyarsk Russia Sp.cial Design-Technology Bureau “Nauka” SB RAS Krasnoyarsk Russia

The catalytic efficiency of modified nanodiamonds (MND) in reactions of interaction between organic comp.unds was demonstrated on the examp.e of azocoup.ing reaction (hydrogen p.roxide-4-aminoantip.rine-p.enol). It was found that catalytic action of MND was caused by redox active metal ions of Fe and Cu located on the MND surface. The neutralization of the ions significantly decreased catalytic p.op.rties of MND.

关键词： Diamond Nanop.rticles Catalytic Activity Metal Ions Organic Reaction

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p.olonged hyp.rvolemic hemodilution decreases functional cap.llary density of ileal mucosa in p.gs revealed by sidestream dark-field imaging

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第10期12卷 867-874页

作者： Zdenek TUREK vladimir CERNY Renata p.RIZKOVA Jindrich SAMEK Martin OBERREITER Dep.rtment of Anesthesiology and Intensive Care University Hospital Hradec KraloveCharles University in PragueHradec Kralove 500 05Czech Republic Dep.rtment of Surgery University Hospital Hradec KraloveCharles University in PragueHradec Kralove 500 05Czech Republic

Objective： Hemodilution changes the p.ysical p.op.rties of blood by reducing its hematocrit and blood viscosity. We tested whether p.olonged hyp.rvolemic hemodilution （HHD） imp.irs functional cap.llary density （FCD） of ileal mucosa in healthy mechanically-ventilated p.gs and if there is any correlation between changes in FCD of ileal and sublingual mucosas during HHD. Methods： Sixteen domestic female p.gs were anesthetized, mechanically-ventilated, and randomly assigned to the HHD （20 ml/（kg.h） Hartmann＇s solution for 3 h） or fluid restrictive （5 ml/（kg-h） Hartmann＇s solution for 3 h） group. Microcirculations of sublingual and ileal mucosas via ileostomy were visualized using sidestream dark-field （SDF） imaging at baseline conditions （t=0 h） and at selected time intervals of fluid therap. （t=-l, 2, and 3 h）. Results： A significant decrease of ileal FCD （285 （278-292） cm/cm^2） in the HHD group.was observed after the third hour of HHD when comp.red to the baseline （360 （350-370） cm/cm2）（p.0.01）. This trend was not observed in the restrictive group. where the ileal mucosa FCD was significantly higher after the third hour of fluid therap. as comp.red to the HHD group.（p.0.01）. No correlation between microhemodynamic p.rameters obtained from sublingual and ileal mucosas was found throughout the study. Conclusions： p.olonged HHD established by crystalloid solution significantly decreased ileal villus FCD when comp.red to restrictive fluid regimen. An inap.rop.iate degree of HHD can be harmful during uncomp.icated abdominal surgery.

关键词： Hyp.rvolemic hemodilution Intestinal microcirculation Sidestream dark-field imaging

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