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Evaluation of seismic residual capacity ratio for reinforced concrete structures

Resilient Cities and Structures 2023年第1期2卷 28-45页

作者： Alex v.Shegay Kota Miura Kisho Fujita yu Tabata Masaki Maeda Matsutaro Seki Tokyo Institute of Technology 4259 NagatsutaMidori-kuYokohamaJapan Obayashi Technical Research Institute 4-640 ShimokiyotoKiyoseJapan Obayashi Corporation 2-15-2 KonanMinato-ku TokyoJapan Kume Sekkei Co.Ltd 2-1-2 ShiomiKoto-ku TokyoJapan Tohoku University 12206-6-11 Aramaki AobaAoba-kuSendaiJapan Building Research Institute Tsukuba-shiTachihara 1Japan

Use of indices that quantify the seismic residual capacity of buildings damaged in earthquakes is one way to draw judgements on the building’s safety and possibility of future *** Japanese damage assessment guidelines,several approximate calculation methods exist to evaluate the residual capacity of buildings based on visually observed damage and simplifying assumptions on the nature of the building’s response mechanism and member *** these methods provide a useful residual capacity ratio that enables a‘relative’comparison be-tween buildings,the exact relationship to a physically meaningful residual capacity is *** aim of this study is to benchmark the‘approximations’of residual *** do so,a shake-table test was conducted on a 14 scale 4-storey RC structure and a residual capacity evaluation was undertaken based on observed damage *** the help of a numerical model,a benchmark residual capacity at each of the damage states is determined and compared to the approximate residual capacity calculation results via *** was found that approx-imate methods are generally accurate prior to yield but can become overly conservative *** assumptions of equal member deformation capacity used in the residual capacity ratio calculation was found to be suitable given constraints of rapid field evaluations.

关键词： Seismic residual capacity ratio Reinforced concrete Earthquake engineering Shake-table test Damage evaluation Numerical modeling

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The Analysis of Zirconium (Ⅳ) Oxide (ZrO_(2)) Nanoparticles for Peroxidase Activity

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Journal of Analysis and Testing 2019年第3期3卷 246-252页

作者： Christopher W.Smith yu-Sheng Chen Nidhi Nandu Mahera Kachwala Mehmet v.Yigit Department of Chemistry University at AlbanyState University of New York1400 Washington AvenueAlbanyNY 12222USA The RNA Institute University at AlbanyState University of New York1400 Washington AvenueAlbanyNY 12222USA

In this study,the peroxidase-like activity of zirconium(Ⅳ)oxide nanoparticles(nZr)is *** catalyze the oxidation of their substrate in the presence of peroxide species.3,3′,5,5′-tetramethylbenzidine(TMB)is a peroxidase substrate,and we have demonstrated that nZr oxidizes the TMB in the presence of hydrogen peroxide resulting in a colored(TMBox)*** reaction was tested in various buffers,and sodium acetate with pH 4 was observed to be an ideal buffer for the enzymatic reaction and the dispersity of the nZr in the *** nanozyme behavior was studied systematically at three different temperatures(25,35 and 45℃)and a wide range of H_(2)O_(2) *** dependence of the enzymatic reaction on temperature,nZr content and H_(2)O_(2) concentration was *** enzymatic reaction was tested in different protein solutions and no noticeable interference was observed with these ***,we demonstrate that nZr,which is often used for industrial applications,mimics peroxidase enzyme and catalyzes oxidation of its substrate in the presence of peroxide species.

关键词： Artificial enzyme Nanozyme Peroxidase Sensor Zirconium(Ⅳ)oxide(ZrO_(2))

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Analysis of heat transfer processes for sapphire growth by horizontal directed crystallization method

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Journal of Advanced Dielectrics 2020年第1期10卷 2-8页

作者： yu.v.Klunnikova S.P.Malyukov A.v.Filimonov N.Zhang Institute of Nanotechnology Electronics and Electronic Equipment Engineering Southern Federal University Shevchenko 2Taganrog 347928Russia Department of Physical Electronics Peter the Great St.Petersburg Polytechnic University St.Petersburg 195251 Politekhnicheskaya 29Russia Electronic Materials Research Laboratory Xi’an Jiaotong University 710049

This research summarizes the analytical and experimental results of heat-transfer processes influence on defects formation during sapphire crystal growth by horizontal directed crystallization method(HDC).The shape of solid-melt interface significantly influences the process of sapphire crystals growth by this *** receive the Stefan problem solution for sapphire crystals *** allows investigating the crystal growth process and the related factors(thermal stresses on different stages of growth process),their influence on defects *** investigate the main reasons for the formation of defective structures of the solid phase of sapphire crystals and the influence of thermal unit construction,the crystal geometry on the quality of the resulting sapphire *** study the structure formation process,impurity distribution,and the nature of the defects in the crystal during it growth.

关键词： Crystal growth directional crystallization defects internal stresses analytical methods

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Electrochemical synthesis of boron-containing coatings on Mg alloy for thermal neutron shielding

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Journal of Magnesium and Alloys 2023年第10期11卷 3779-3789页

作者： K.v.Nadaraia S.N.Suchkov N.S.Markin I.M.Imshinetskiy S.I.Ivannikov D.v.Mashtalyar A.yu.Ustinov S.L.Sinebryukhov S.v.Gnedenkov Institute of Chemistry FEB RAS 159 Pr.100-Letiya VladivostokaVladivostok 690022Russia

The work provides the results of the one-step formation of boron-containing coatings on an Mg–Mn–Ce alloy by plasma electrolytic oxidation. The results of studies of the composition, structure and morphology of heteroxide coatings are presented. It was established that the boron is contained in the coating mainly in the form of B or B_(2)O_(3). The introduction of B changes the color of coatings, and also helps to increase their porosity. The method of determining the full cross section of the interaction of thermal neutron absorption efficiency by samples material using the installation of neutron-activation analysis based on ^(252)Cf was developed. It was shown that the introduction of boron into the formed coatings allows to increase the macroscopic cross-section of the interaction of samples with thermal neutrons by 3.8 times. This effect opens the potential for the use of synthesized material in the field of nuclear technologies and aerospace industry.

关键词： Plasma electrolytic oxidation Boron Neutron capture Neutron shielding Protective coatings

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Carbon dioxide reforming of methane on monolithic Ni/Al_2O_3-based catalysts

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Journal of Natural Gas Chemistry 2011年第2期20卷 184-190页

作者： S. O. Soloviev A. yu. Kapran S. N. Orlyk E. v. Gubareni L. v. Pisarzhevskii Institute of Physical Chemistry National Academy of Sciences of Ukraine

Nickel-alumina catalysts supported on cordierite monoliths of honeycomb structure surpass essentially the conventional granulated ones with respect to the output in carbon dioxide reforming of methane. Adjusting the surface acid-base properties of catalysts by introduction of alkali metal （Na, K） oxides inhibits the carbonization and as a result, improves the operational stability of these catalysts. An effect of promotion of nickel-alumina based composite doped by lanthanum oxide is found. This effect, caused by an additional route for the CO2 activation on Ni-La2O3/Al2O3/cordierite catalyst, is displayed in increase of methane conversion under conditions of an oxidant excess.

关键词： methane carbon dioxide reforming hydrogen syngas Ni/Al2O3 catalysts cordierite monolithic supports honeycomb structure sodium and potassium lanthanum oxide modifying additives

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About the Features of Transient to Steady State Deformation of Solids

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Journal of Materials Science & Technology 1997年第1期13卷 69-72页

作者： S. G.Psakhie A. yu.Smolin E. v.Shilko S.yu.Korostelev, A.I.Dmitriev and S. v.Alekseev (Institute of Strength Physics and Materials Science of the Russian Academy of Sciences,Siberian Branch 634055, Tomsk, Russia) Institute of Strength Physics and Materials Science Russian Academy of Sciences Siberian Branch 634055 Tomsk Russian Federation

The features of transient to steady state deformation of solids are theoretically *** of various types of loading was carried out by the Movable Cellular Automata method.A stress state of material at the stage of transient to a steady state is shown to be essentially non-uniform, that may in its turn result in stable structures in velocity field of particles of the material. It may also influence development of deformation at the further stages.

关键词： About the Features of Transient to Steady State Deformation of Solids

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Long-Term Trends of Carbon Monoxide Total Columnar Amount in Urban Areas and Background Regions:Ground-and Satellite-based Spectroscopic Measurements

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Advances in Atmospheric Sciences 2018年第7期35卷 785-795页

作者： Pucai WANG N.F.ELANSKY yu.M.TIMOFEEv Gengchen WANG G.S.GOLITSYN M.v.MAKAROvA v.S.RAKITIN yu.SHTABKIN A.I.SKOROKHOD E.I.GRECHKO E.v.FOKEEvA A.N.SAFRONOv Liang RAN Ting WANG LAGEO Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China A.M.Obukhov Institute of Atmospheric Physics Russian Academy of SciencesMoscow 119017Russia St.Petersburg State University Saint-Petersburg 198904Russia

A comparative study was carried out to explore carbon monoxide total columnar amount（CO TC） in background and polluted atmosphere, including the stations of ZSS（Zvenigorod）, ZOTTO（Central Siberia）, Peterhof, Beijing, and Moscow,during 1998–2014, on the basis of ground-and satellite-based spectroscopic measurements. Interannual variations of CO TC in different regions of Eurasia were obtained from ground-based spectroscopic observations, combined with satellite data from the sensors MOPITT（2001–14）, AIRS（2003–14）, and IASI Met Op-A（2010–13）. A decreasing trend in CO TC（1998–2014） was found at the urban site of Beijing, where CO TC decreased by 1.14% ± 0.87% yr^（-1）. Meanwhile, at the Moscow site, CO TC decreased remarkably by 3.73% ± 0.39% yr^（-1）. In the background regions（ZSS, ZOTTO, Peterhof）, the reduction was 0.9%–1.7% yr^（-1） during the same period. Based on the AIRSv6 satellite data for the period 2003–14, a slight decrease（0.4%–0.6% yr^（-1）） of CO TC was detected over the midlatitudes of Eurasia, while a reduction of 0.9%–1.2% yr^（-1） was found in Southeast Asia. The degree of correlation between the CO TC derived from satellite products（MOPITTv6 Joint, AIRSv6 and IASI Met Op-A） and ground-based measurements was calculated, revealing significant correlation in unpolluted *** in polluted areas, IASI Met Op-A and AIRSv6 data underestimated CO TC by a factor of 1.5–2.8. On average, the correlation coefficient between ground-and satellite-based data increased significantly for cases with PBL heights greater than 500 m.

关键词： carbon monoxide trend spectroscopic measurement MOPITT AIRS IASI

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Measurement of yields and angular distributions ofγ-quanta from the interaction of 14.1 Mev neutrons with oxygen,phosphorus,and sulfur

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Chinese Physics C 2024年第3期48卷 79-92页

作者： D.N.Grozdanov N.A.Fedorov S.B.Dabylova yu.N.Kopatch I.N.Ruskov v.R.Skoy T.yu.Tretyakova C.Hramco P.I.Kharlamov G.v.Pampushik P.G.Filonchik A.v.Andreev Joint Institute for Nuclear Research(JINR) DubnaRussia Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of SciencesSofiaBulgaria Faculty of Physics Lomonosov Moscow State UniversityMoscowRussia L.N.Gumilyov Eurasian National University AstanaKazakhstan Skobeltsyn Institute of Nuclear Physics Moscow State UniversityMoscowRussia Institute of Chemistry of Moldova ChisinauRepublic of Moldova Moscow Institute of Physics and Technology MoscowRussia

A study of the inelastic scattering of neutrons with an energy of 14.1 Mev on the nuclei of oxygen,phosphorus,and sulfur was performed at the TANGRA facility at JINR(Dubna).The experiment aimed to refine existing data and obtain new data on the yields and angular distributions ofγ-quanta emitted by the studied nuclei due to neutron-induced nuclear reactions using the tagged neutron *** types of detector systems were used to registerγ-***γ-ray yields were measured using a high-purity germanium(HPGe)*** angular distributions ofγ-rays were obtained using a system of 18 scintillation detectors based on bismuth germanite Bi_(4)Ge_(3)O_(12)(BGO)located around the *** performed experiments measured the yields of two transitions for the reaction of tagged neutrons with 16O,nine transitions for the reaction with ^(31)P,and nine transitions for the reaction with ^(32)S for the first *** angular anisotropy of theγ-radiation accompanying the inelastic scattering of neutrons with an energy of 14.1 Mev on ^(31)P nuclei was also measured for the first time.

关键词： tagged neutron method yields of gamma-quanta high-resolution gamma-spectrometry neutron-nuclear reactions neutron scattering

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Low-agglomerated yttria nanopowders via decomposition of sulfate-doped precursor with transient morphology

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Journal of Rare Earths 2014年第4期32卷 320-325页

作者： R.P.Yavetskiy D.yu.Kosyanov v.N.Baumer A.G.Doroshenko A.I.Fedorov N.A.Matveevskaya A.v.Tolmachev O.M.vovk Institute for Single Crystals of NAS of Ukraine State Scientific Institution"Institute for Single Crystals"of NAS of Ukraine

The fabrication peculiarities of low-agglomerated yttria （Y2O3） nanopowders via thermal decomposition of sulfate-doped precursor with transient morphology were studied. It was determined that Y2（OH）5（NO3）x（CO2）y（SO4）z·nH2O （n=1-2） crystalline precursor underwent fragmentation and decomposition into isolated quasi-spherical Y2O3 particles upon calcination. Effect was con-nected with minimizing the free energy of the plate-like crystallites via reducing the contact surface until to the moment of spheroidi-zation and attainment of isolation that occurred atТ=1100 °С. Residual sulfate ions slowed down the surface diffusion during heat treatment thus retaining quasy-spherical morphology and low aggregation degree of Y2O3 nanopowders. Sulfate-doped yttria nanopowders with medium particle size of 53±13 nm possessed improved sinterability in comparison with undoped ones arising from finer particle size, narrower particle distribution and lower agglomeration degree.

关键词： precursor transient morphology sulfate-ions yttria nanopowders particle size sinterability rare earths

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用NMR研究洋葱碳吸附水后的抗磁性（英文）

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新型炭材料 2014年第5期29卷 392-397页

作者： A M Panich v yu Osipov2 K Takai Department of Physics Ben-Gurion University of the Negev P. 0. Box 653 Be&#39 er Sheva 84105 Israel Ioffe Physical-Technical Institute Polytechnicheskaya 26 St. Petersburg 194021 Russia Department of Chemical Science and Technology Hosei University 3-7-2 Kajino Koganei Tokyo 184-8584 Japan

对洋葱状碳缺陷位吸附水分子的1H化学位移进行测试,并比较块状水和石墨烯、氧化石墨烯和纳米金刚石吸附水的化学位移。纳米金刚石和氧化石墨烯绝缘体的1H共振位置与块状水接近,然而石墨烯和洋葱碳吸附水呈现明显的化学位偏移,这是由导... 详细信息

对洋葱状碳缺陷位吸附水分子的1H化学位移进行测试,并比较块状水和石墨烯、氧化石墨烯和纳米金刚石吸附水的化学位移。纳米金刚石和氧化石墨烯绝缘体的1H共振位置与块状水接近,然而石墨烯和洋葱碳吸附水呈现明显的化学位偏移,这是由导电的石墨烯片层抗磁屏蔽效应所致。质子的化学位移和抗磁性之间存在显著的相关性。

关键词：洋葱碳石墨烯反磁性核磁共振

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