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Materials Sciences and Applications 2016年第5期7卷 247-256页

作者： Sergey Guk daria Plotnikova Rudolf Kawalla Institute for Metal Forming TU Bergakademie Freiberg Freiberg Germany

A commercially available laser marking system based on diode-pumped Nd:YVO4 laser was used for creating grid patterns for forming strain analysis of a dual-phase steel. The aim was to determine and analyze the influence of laser working parameters on the formability of sheet material by means of an in-depth characterization of this induced microstructural and geometric inhomogeneity. The electrochemical etching served as the reference method without the negative effect of generating inhomogeneity. The formability was evaluated using the cupping test according to Erichsen. While the quantification of geometric inhomogeneity was based on the determination of the notch factor, light microscopy and microhardness measurement were used for the evaluation of microstructural inhomogeneity. Furthermore, on the basis of the results an empirical regression model was established which described in terms of quantity the relationship between the examined factors such as laser power, pulse frequency and scanning speed as well as the command variable and the mark depth. The results showed that microstructural inhomogeneity in the used marking parameters due to their locally very limited formation did not have an appreciable influence on the mechanical properties. In contrast to this, the induced geometric inhomogeneity had a marked influence on the material formability.

关键词： Laser Grid Marking Deformation Analysis Inhomogeneity Sheet Metal Formability

Directly addressable GaN-based nano-LED arrays: fabrication and electro-optical characterization

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Microsystems & Nanoengineering 2020年第1期6卷 275-284页

作者： daria D.Bezshlyakh Hendrik Spende Thomas Weimann Peter Hinze Steffen Bornemann Jan Gulink Joan Canals Joan Daniel Prades Angel Dieguez Andreas Waag Institute of Semiconductor Technology Technische Universitat BraunschweigHans-Sommer Str.6638106 BraunschweigGermany Laboratory for Emerging Nanometrology Langer Kamp 6 a/b38106 BraunschweigGermany Epitaxy Competence Center ec2 Technische Universitat BraunschweigHans-Sommer Str.6638106 BraunschweigGermany Nanostructuring and Clean Room Center Infrastructure Physikalisch-Technische BundesanstaltBundesallee 10038116 BraunschweigGermany Department of Electronic and Biomedical Engineering University of BarcelonaCarrer Marti i Franques 108028 BarcelonaSpain

The rapid development of display technologies has raised interest in arrays of self-emitting,individually controlled light sources atthe *** nitride(GaN)micro-light-emitting diode(LED)technology meets this ***,the current technology is not suitable for the fabrication of arrays of submicron light sources that can be controlled *** approach is based on nanoLED arrays that can directly address each array element and a self-pitch with dimensions below the wavelength of *** design and fabrication processes are explained in detail and possess two geometries:a 6×6 array with 400 nm LEDs and a 2×32 line array with 200 nm *** nanoLEDs are developed as core elements of a novel on-chip super-resolution *** technology,based on its physical properties,is an ideal platform for such nanoLEDs.

关键词： arrays GaN optical

Asymmetry ratio as a parameter of Eu^3＋ local environment in phosphors

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Journal of Rare Earths 2018年第5期36卷 474-481页

作者： Ilya E. Kolesnikov Alexey V. Povolotskiy daria V. Mamonova Evgeny Yu. Kolesnikov Alexey V. Kurochkin Erkki Lahderanta Mikhail D. Mikhailov Saint Petersburg State University 7/9 Universitetskaya nab. 199034 St.petersburg.Russia Lappeenranta University of Technology LUT Skinnarilankatu 34 53850 Lappeenranta Finland Scientific and Technological Institute of Optical Material Science VNTs S. I. Vavilov State Optical Institute Babushkina 36-1 192171 St. Petersburg Russia Volga State University of Technology Lenin Sq. 3 424000 Yoshkar-Ola Russia

Study of the local environment of certain ion is quite a complex problem. Due to the unique luminescent properties, Eu^3＋ ions can be used as a structural probe. In this paper, effect of doping concentration,excitation wavelength and excitation mechanism on asymmetry ratio was systematically studied using Y3Al5O12：Eu^3＋, YVO4：Eu^3＋ and Y2O3：Eu^3＋nanophosphors. The asymmetry ratio gives information about the local surrounding and environmental changes around the Eu^3＋ ions. Asymmetry ratios of YAG：Eu^3＋and YVO4：Eu^3＋ nanopowders were calculated using standard technique and the obtained average values were found to be 0.75 and 8.2, respectively. However, it is found that standard method of asymmetry ratio calculation is suitable only for samples where all Eu^3＋ ions occupy one site. The ＂multisite model＂ of asymmetry ratio calculation was developed and used for Y2O3：Eu^3＋ nanocrystalline powders. Average value of asymmetry ratio for Eu^3＋ ions occupied ＂normal＂ sites is 6.0 and for Eu^3＋ ions occupied ＂defect＂sites is 2.3.

关键词： Eu3+ Oxide powders Luminescence Asymmetry ratio Structural probe Rare earths

Blood coagulation factors and platelet response to drug-induced hepatitis and hepatosis in rats

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Animal Models and Experimental Medicine 2023年第1期6卷 66-73页

作者： daria Korolova Viktoriya Gryshchenko Tamara Chernyshenko Oleh Platonov Olha Hornytska Volodymyr Chernyshenko Pavlo Klymenko Yevdokiia Reshetnik Tetyana Platonova Department of Structure and function of proteins Palladin Institute of Biochemistry of NAS of UkraineKyivUkraine National University of Life and Environmental Sciences of Ukraine KyivUkraine SI“D.F.Chebotarev Institute of Gerontology of the National Academy of Medical Sciences of Ukraine ”KyivUkraine Taras Shevchenko National University of Kyiv KyivUkraine

Background:Knowing the variability of blood coagulation responses to liver damage of different origins can provide a key to curing liver tissues or to mitigating treatment side *** aim of the present work was to compare the changes in the main components of hemostasis under experimental drug-induced hepatosis and hepatitis in ***:We modeled diclofenac-induced hepatitis and tetracycline-induced *** response was gauged by measuring fibrinogen,factor X,protein C(PC),and prothrombin in *** decarboxylated form of prothrombin was de-tected by measuring prothrombin index and ecamulin *** reactivity was studied using ***:Both hepatitis and hepatosis decreased the synthesis of fibrinogen,factor X,and ***,protein carboxylation was not disrupted in hepatosis but was much impaired in *** decreased in both models as a consequence of its consumption possibly during inflammatory *** aggregation rate was lower in hepatosis but higher in ***:Our findings imply the need for a thorough monitoring of the hemostasis system in liver diseases to avoid possible thrombotic *** state indicates the disorder's rate and character.

关键词： hemostasis hepatitis hepatosis platelets prothrombin

In-situ study of the microstructure evolution during tension of a Mg-Y-Zn-Al alloy processed by rapidly solidified ribbon consolidation technique

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Journal of Magnesium and Alloys 2024年第5期12卷 2024-2040页

作者： Jeno Gubicza Kristián Máthis Péter Nagy Péter Jenei Zoltán Hegedus Andrea Farkas Jozef Vesely Shin-ichi Inoue daria Drozdenko Yoshihito Kawamura Department of Materials Physics Faculty of ScienceEotvos Loránd UniversityPázmány P.sétány 1/ABudapest H-1117Hungary Department of Physics of Materials Faculty of Mathematics and PhysicsCharles UniversityKe Karlovu 512116 Praha 2Czech Republic Deutsches Elektronen-Synchrotron DESY Notkestr.85Hamburg 22603Germany Magnesium Research Center Kumamoto University2-39-1 KurokamiChuo-kuKumamoto 860-8555Japan

Mg-Y-Zn-Al alloys processed by rapidly solidified ribbon consolidation(RSRC)technique exhibit an exceptional mechanical performance indicating promising application *** material has a bimodal microstructure consisting of fine recrystallized and coarse non-recrystallized grains with solute-rich stacking faults forming cluster arranged layers(CALs)and nanoplates(CANaPs),or complete long period stacking ordered(LPSO)*** order to reveal the deformation mechanisms,in-situ synchrotron X-ray diffraction line profile analysis was employed for a detailed study of the dislocation arrangement created during tension in Mg-0.9%Zn-2.05%Y-0.15%Al(at%)*** uncovering the effect of the initial microstructure on the mechanical performance,additional samples were obtained by annealing of the as-consolidated specimen at 300 and 400℃ for 2 *** heat treatment at 300℃ had no significant effect on the initial microstructure,its evolution during tension and,thus,the overall deformation behavior under tensile *** the other hand,annealing at 400℃ resulted in a significant increase of the recrystallized grains fraction and a decrease of the dislocation density,leading to only minor degradation of the mechanical *** maximum dislocation density at the failure of the samples corresponding to the plastic strain of 10-25% was estimated to be about 16-20×10^(14)m^(-2).The diffraction profile analysis indicated that most dislocations formed during tension were of non-basal and pyramidal types,what was also in agreement with the Schmid factor values revealed independently from orientation *** was also shown that the dislocation-induced Taylor hardening was much lower below the plastic strain of 3% than above this value,which was explained by a model of the interaction between prismatic dislocations and CANaPs/LPSO plates.

关键词： Mg-Zn-Y-Al alloy Long period stacking ordered(LPSO)phase Cluster arranged nanoplates(CANaPs) Annealing Tension Dislocation density Hardening

The influence on biotissue laser resection of a strongly absorbing layer at the optical fiber tip

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Journal of Innovative Optical Health Sciences 2016年第5期9卷 15-21页

作者： daria Kuznetsova Vadim Elagin Maria Karabut Maria Shakhova Vladimir Bredikhin Liudmila Snopova Andrei Shakhov Natalia Sapogova Nikita Bityurin Victor Bagratashvili Vladislav Kamensky Institute of Biomedical Technologies Nizhny Novgorod State Medical Academy 10/1 Minin and Pozharsky Sq. Nizhny Novgorod 603005Russia Lobachevsky State University of Nizhni Novgorod 23 Gagarin Avenue BLDG 2 Nizhny Novgorod 603950Russia Nizhny Novgorod State Medical Academy 10/1 Minin and Pozharsky Sq. Nizhny Novgorod 603005Russia Institute of Applied Physics Russian Academy of Sciences 46 Ul'yanov StreetNizhny Novgorod 603950Russia Institute on Laser and Information Technologies Russian Academy of Sciences 2 Pionerskaya St. Troitsk 142092Russia

In this paper,we consider a method of laser resection using the silica glass core from which the cladding layer has been removed as the cutting part of a laser *** absorbing layer coating the silica fiber tip markedly alters its biotissue cutting character *** results of histological studies of skin after exposure to a laser scalpel with and without a strongly absorbing coating(SAC)at a wavelength of 097μm show that resection using a coated scalpel is more *** an uncoated scalpel was used,skin injury was more apparent in both its surface spread and the depth of structural damage,resulting in poorer tissue regeneration.

关键词： Laser surgery silica fibers strongly absorbing coating histology

Isochronous singing in 3 crested gibbon species(Nomascus spp.)

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Current Zoology 2024年第3期70卷 291-297页

作者： Chiara De Gregorioa Teresa Raimondi Valeria Bevilacqua Chiara Pertosa daria Valente Filippo Carugati Francesca Bandoli Livio Favaro Brice Lefaux Andrea Ravignani Marco Gamba Department of Life Sciences and Systems Biology University of Turinvia Accademia Albertina 13Torino 10125Italy Department of Biology University of PaduaVia VIII Febbraio2Padova 35122Italy Giardino Zoologico di Pistoia Via Pieve a Celle160/APistoia 5110Italy Botanical and Zoological Garden of Mulhouse 11 Av.de la 1ère Division BlindéeMulhouse 68100France Comparative Bioacoustics Group Max Planck Institute for PsycholinguisticsWundtlaan 1Nijmegen 6525 XDThe Netherlands Center for Music in the Brain Department of Clinical MedicineAarhus UniversityBuilding 1710Universitetsbyen 38000AarhusDenmark Department of Human Neuroscience Sapienza University of RomeViale Regina Elena 334Rome 00185Italy

The search for common characteristics between the musical abilities of humans and other animal species is still taking its frst *** of the most promising aspects from a comparative point of view is the analysis of rhythmic components,which are crucial features of human communicative performance but also well-identifable patterns in the vocal displays of other ***,the study of rhythm is becoming essential to understand the mechanisms of singing behavior and the evolution of human *** fndings provided evidence that particular rhythmic structures occur in human music and some singing animal species,such as birds and rock hyraxes,but only 2 species of nonhuman primates have been investigated so far(Indri indri and Hylobates lar).Therefore,our study aims to consistently broaden the list of species studied regarding the presence of rhythmic *** investigated the temporal organization in the singing of 3 species of crested gibbons(Nomascus gabriellae,Nomascus leucogenys,and Nomascus siki)and found that the most prominent rhythmic category was ***,we found slight variation in songs’tempo among species,with *** and *** singing with a temporal pattern involving a gradually increasing tempo(a musical accelerando),and *** with a more regular ***,we show how the prominence of a peak at the isochrony establishes itself as a shared characteristic in the small apes considered so far.

关键词： accelerando isochrony music rhythm singing primates song tempo

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华为在俄罗斯的营销适应：文化视角

华为在俄罗斯的营销适应：文化视角

作者： Babich daria 北京邮电大学

学位级别：硕士

华为技术有限公司是电信领域的领先公司之一。它提供电信和网络设备,并已进入智能手机行业,且在该行业中居于榜首。华为在全球范围内以优质的服务和生产获得了认可,并通过成功融入国外市场来扩大业绩,从而在潜在消费者中获得更多认可并... 详细信息

华为技术有限公司是电信领域的领先公司之一。它提供电信和网络设备,并已进入智能手机行业,且在该行业中居于榜首。华为在全球范围内以优质的服务和生产获得了认可,并通过成功融入国外市场来扩大业绩,从而在潜在消费者中获得更多认可并提升品牌知名度。本文研究了华为在俄罗斯市场的增长、进入模式、营销适应和产品推广。本文还探究了华为在俄罗斯运营的二十四年间可能面临的文化挑战。基于现有关于标准化与适应性营销策略、品牌和文化方面的学术研究,本文重点描绘了华为在俄罗斯市场中的优势、劣势,以及机遇与威胁。本文从文化视角提出了有关公司开展营销活动时的可能解决方案。这些解决方案和建议旨在促进华为在俄罗斯的业务并吸引更多的本地客户。

关键词：华为在俄罗斯电信行业营销适应文化适应

社会表征理论的争议：2013-2017乌克兰俄罗斯冲突

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社会表征理论的争议：2013-2017乌克兰俄罗斯冲突

作者： daria Malinina 上海外国语大学

学位级别：硕士

俄乌关系破裂所引发的深刻和危险的混乱已经发展成为一场危机,现在影响到区域和全球关系。基于此,本文以社会代表理论为研究视角,分析了2013年至2016年期间有关乌克兰-俄罗斯冲突的文本媒体中的有关报道,探讨了乌克兰和俄罗斯媒体社会... 详细信息

俄乌关系破裂所引发的深刻和危险的混乱已经发展成为一场危机,现在影响到区域和全球关系。基于此,本文以社会代表理论为研究视角,分析了2013年至2016年期间有关乌克兰-俄罗斯冲突的文本媒体中的有关报道,探讨了乌克兰和俄罗斯媒体社会表征的不同因素在特定维度上是否存在差异,在此基础上阐述并探究了这一社会事件在两个国家的感知和反应中的表征。论证过程中,作者以乌克兰和俄罗斯媒体之间的冲突表征为主要研究对象,从乌俄的民族特点、文化观念等角度,对冲突报道进行了梳理和分析,同时论述了媒体报道的议程设置对于影响舆论导向的重要性和关键作用。研究方向,价值观是影响人们对国家社会发展的观点和看法,从一定程度上,乌克兰-俄罗斯冲突也是价值观冲突的结果。文中发现较多的语言表述错误和论文格式规范问题,建议作者在正式提交之前务必逐一加以认真的复核和修正。全文立意较新,分析过程较严谨,逻辑性较强,研究方法比较科学,研究内容对于如何科学理性地分析地区冲突的相关报道和研究有一定的参考意义,达到了新闻学专业硕士学位论文的要求。

关键词：社会表征乌克兰俄罗斯麦丹广场革命冲突媒体犯罪顿巴斯

在俄罗斯社交网络Vkontakte中中国国家形象分析 ——以“老外的故事”为例

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在俄罗斯社交网络Vkontakte中中国国家形象分析 ——以“老外的故...

作者： YUDAKOVA daria 上海外国语大学

学位级别：硕士

随着中国经济的持续增长和国际影响力的持续提升,中国在国际中的地位也随之提升,这些变化都深深地受到中国在政治领域、经济领域、文化领域乃至社会生活领域等方面影响。回顾中国近年来的发展,发现从1978年的改革开放,到过2013年一带一... 详细信息

随着中国经济的持续增长和国际影响力的持续提升,中国在国际中的地位也随之提升,这些变化都深深地受到中国在政治领域、经济领域、文化领域乃至社会生活领域等方面影响。回顾中国近年来的发展,发现从1978年的改革开放,到过2013年一带一路倡议的提出,到现如今的“新常态”,中国的国家形象发生了翻天覆地的变化。中国国家形象的变化受到越来越多的国内外相关领域学者的关注。本文通过阐述国家形象和社交网络两个重要概念,梳理了国内外研究学者在中国国家形象领域的研究,发现中国国家形象在历史发展的过程中共经历了三个重要阶段。,分别为:最初对中国的描述多基于作者自身的想象,以赞美和正面标书居多,以及工业革命时期,中国发展逐步落后西方国家,中国形象也随之一落千丈。与一直到2000年左右,中国发展再一次进入到加速轨道中,“中国威胁论”和“中国崩溃论”不断被宣扬,中国的积极正面形象也不断被掩盖。在前人的研究基础上,本文针对中国国家形象研究进行了目的、方法和内容的设计,并采用文本分析方法,综合运用定量分析法和定性分析法,选取了2016年11月至2018年11月二年间的俄罗斯VK网上的新闻资讯,从报道数量、议题、篇幅、倾向性、转发量等方面着手,兼顾图片、视频等其他表现形式,分析研究了新闻图片和视频中的中国国家形象,概括其二年间中国形象在社交媒体中的呈现特点和规律。针对中国国家形象展开了综合分析,提出影响中国国家形象的四个因素,政治、经济、文化和社会,得到塑造中国国家形象的有效措施,为未来在外国传媒领域完善中国国家形象提供了有效的参考与支持。

关键词：中国形象社交网络国家形象分析内容分析法