检索结果-南通市图书馆

Chinese Physics B 2015年第4期24卷 467-474页

作者： A.E.Ershov A.P.Gavrilyuk S.V.Karpov P.N.Semina L.V.Kirensky institute of Physics Russian Academy of Sciences institute of Computational Modeling Russian Academy of Sciences Siberian State Aerospace University Siberian Federal University

Interactions of pulsed laser radiation with resonance domains of multiparticle colloidal aggregates having an increasingly complex local environment are studied via an optodynamic model. The model is applied to the simplest configurations, such as single particles, dimers, and trimers consisting of mono- and polydisperse Ag nanoparticles. We analyze how the local environment and the associated local feld enhancement by surrounding particles affect the optodynamic processes in domains, including their photomodification and optical properties.

关键词： nanoparticle surface plasmon colloid aggregate optodynarnics

Distribution and diversity of microbial communities in meromictic soda Lake Doroninskoe(Transbaikalia,Russia) during winter

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 2015年第6期33卷 1378-1390页

作者： Evgeniya MATYUGINA Natalia BELKOVA institute of Natural Resources Ecology and CryologySiberian Branch of the Russian Academy of Sciences Limnological institute Siberian Branch of the Russian Academy of Sciences Irkutsk State University

Meromictic soda and saline lakes are unique ecosystems characterized by the stability of physical,chemical and biological parameters,and they are distributed all over the *** located in regions with average annual negative air temperature are of particular interest because of the presence of two periods with intensive and dynamic processes:the so-called biological summer and the long ice season with the biological *** Lake Doroninskoe is located in Eastern Transbaikalia(51°14′N,112°14′E) in the permafrost zone in an extreme continental climate,and is covered by ice for seven months per *** structure and diversity of the microbial communities throughout the water column of the lake was studied by 16 S r RNA gene amplicon *** species with specific functions were found to dominate at different *** flexible bacteria with a capacity to switch between anoxygenic photosynthesis and aerobic chemotrophic metabolism dominate in soda Lake Doroninskoe.

关键词：微生物群落外贝加尔地区多样性碱湖俄罗斯冬季物理稳定性大陆性气候

Late Paleozoic alkaline magmatism in Western Transbaikalia,Russia:Implications for magma sources and tectonic settings

在线全文

学校读者我要写书评

暂无评论

Geoscience Frontiers 2020年第4期11卷 1289-1303页

作者： Ivan Izbrodin Anna Doroshkevich Mikhail Rampilov Alexey Elbaev German Ripp Geological institute Siberian Branch of the Russian Academy of SciencesRussia V.S.Sobolev institute of Geology and Mineralogy Siberian Branch of the Russian Academy of SciencesRussia

This paper presents the results of geochronological(40Ar-39Ar,U-Pb SHRIMP Ⅱ),petrological and geochemical studies of the Late Paleozoic complexes of alkaline rocks(Zimovechinsky,Tuchinsky and Koma) located within the Vitim Plateau(the western part of the Mongol-Okhotsk Orogenic Belt).The rocks were formed at 310-280 *** is coeval with Late Paleozoic magmatism within the Central Asian Orogenic *** εNd(T) values show large variations from-2.1 to +3.3 as well as the initial Sr(I) isotopic ratios from 0.7042 to 0.7138,that demonstrate strong isotopic heterogeneity of the magmatic *** geochemical characteristics of the rocks show pronounced positive Pb and negative Ti,Zr-Hf anomalies that can be explained by involvement of the subducted component in primary *** rocks intruded in a setting of extension at the active continental margin of the Siberian Craton during subduction of Mongol-Okhotsk oceanic crust under the Siberian Craton.

关键词： Nepheline-bearing and nepheline-free syenites Geochronological and isotope data Late paleozoic magmatism Sources Central Asian orogenic belt

Theoretical simulation of high-voltage discharge with runaway electrons in sulfur hexafluoride at atmospheric pressure

在线全文

学校读者我要写书评

暂无评论

Matter and Radiation at Extremes 2016年第5期1卷 264-268页

作者： Andrey V.Kozyrev Vasily Yu.Kozhevnikov Natalia S.Semeniuk National Research Tomsk State University Tomsk 634050Russia institute of High Current Electronics Russian Academy of SciencesSBTomsk 634055Russia

The results of theoretical simulation of runaway electron generation in high-pressure pulsed gas discharge with inhomogeneous electric field are *** and kinetic approaches are used simultaneously to describe the dynamics of different components of low-temperature discharge *** of coaxial diode occurs in the form of a dense plasma region expanding from the *** this background there is a formation of runaway electrons that are initiated by the ensemble of plasma electrons generated in the place locally enhanced electric field in front of dense *** is shown that the power spectrum of fast electrons in the discharge contains electron group with the so-called“anomalous”energy.

关键词： Pulsed gas discharge High-pressure gas breakdown Fast electron in gas discharge Runaway electron in plasma

To observe mistakes of two schools of old jingxue and to build up pre-sinology as a new branch of sciences

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

To observe mistakes of two schools of old jingxue and to bui...

A Study of Sediments and Radioactive Particles of the Yenisei River Using a Variety of Analytical Methods

纪念孔子诞生2555周年国际学术研讨会

作者：丽·伊·戈洛瓦乔娃 russian academy of sciences Far Eastern Branch The Institute of HistoryArchaeology and Ethnography of Far Eastern Nationalities

＜正＞More than two thousand years long history of Chinese traditional jingxue has been full of struggle of two different academic schools. But divergence between so called School of new writing and School of

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Geoscience and Environment Protection 2014年第3期2卷 153-158页

作者： A. Bolsunovsky M. Melgunov institute of Biophysics sb russian academy of sciences Krasnoyarsk Russia institute of Geology and Mineralogy sb russian academy of sciences Novosibirsk Russia

The Yenisei River, one of the largest rivers in the world, is contaminated with artificial radionuclides released by a russian nuclear facility producing weapon-grade plutonium, which has been in operation for many years. Examination of Yenisei River sediment samples revealed the presence of artificial radionuclides typical of radioactive discharge from the Mining-and-Chemical- Combine (MCC) nuclear facility: isotopes of europium (152Eu, 154Eu, and 155Eu), cesium (137Cs and 134Cs), 60Co, 90Sr, and transuranium elements. The MCC is also a source of radioactive particles in the Yenisei. New data on radionuclide concentrations in sediments and radioactive particles in the Yenisei River were obtained using a wide range of analytical methods. Sequential extraction performed on samples of sediment cores showed different degrees of potential environmental availability of artificial radionuclides and uranium. In a few samples, 241Am was present in the unextractable form, which may be accounted for by the presence of microparticles of the reactor fuel. These microparticles were investigated using scanning electron microscopy, and their reactor origin was confirmed.

关键词： Yenisei River Sediments Artificial and Natural Radionuclides Radioactive Particles Sequential Extraction Radionuclide Composition and Speciation Analytical Methods

Development and testing of a high-power S-band klystron at BINP sb RAS

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第7期35卷 58-67页

作者： A.Levichev A.Barnyakov S.Samoylov D.Nikiforov V.Ivanov M.Arsentyeva D.Chekmenev O.Pavlov I.Pivovarov Budker institute of Nuclear Physics Lavrentyeva Av.11NovosibirskRussia630090 Novosibirsk State University Pirogova Str.2NovosibirskRussia630090

This paper details the development and testing of the first working prototype of the S-band high-power klystron,accomplished at the Budker institute of Nuclear Physics,Siberian Branch,russian academy of sciences(BINP sb RAS).Upon testing,the klystron demonstrated the following parameters:an operating frequency of 2856 MHz and a peak power output of 50 *** paper presents the klystron's design,its constituent units,and pertinent processing procedures,along with discussions on the measurement of its parameters.

关键词： Klystron Linear accelerator Electron beam

Influence of Features of Interphase Boundaries on Mechanical Properties and Fracture Pattern in Metal-Ceramic Composites

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2013年第11期29卷 1025-1034页

作者： Sergey Psakhie Vladimir Ovcharenko Baohai Yu Evgeny Shilko Sergey Astafurov Yury Ivanov Alexey Byeli Alexey Mokhovikov institute of Strength Physics and Materials Science Siberian Branch of the Russian Academy of Sciences institute of High Technology Physics Tomsk Polytechnic University Shenyang National Laboratory for Materials Science institute of High Current Electronics Siberian Branch of the Russian Academy of Sciences Physical-Technical institute Yurga Technological institute Tomsk Polytechnic University

The results of a theoretical study on the influence of strength of interphase boundaries in metal-ceramic composite on macroscopical characteristics of composite response such as strength, deformation capacity, fracture energy and fracture pattern are presented. The study was conducted by means of computer-aided simulation by means of movable cellular automaton method taking account of a developed ＂mesoscopical＂ structural model of particle-reinforced composite. The strength of interphase boundaries is found to be a key structural factor determining not only the strength properties of metal-ceramic composite, but also the pattern and rate of fracture. The principles for achievement of the high-strength values of particle/binder interfaces in the metal-ceramic composition due to the formation of the wide transition zones （areas of variable chemical composition） at the interphase boundaries are discussed. Simulation results confirm that such transition zones provide a change in fracture mechanism and make the achievement of a high-strength and a high deformation capacity of metal-ceramic composite possible.

关键词： Metal--ceramic composites Particle-reinforced composite Interphase boundaries Discrete element based analysis Strength and fracture energy Fracture pattern

Restructuring of plasmonic nanoparticle aggregates with arbitrary particle size distribution in pulsed laser fields

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2016年第11期25卷 563-570页

作者： A E Ershov A P Gavrilyuk S V Karpov S P Polyutov institute of Computational Modeling Russian Academy of SciencesKrasnoyarsk 660036Russia L.V.Kirensky institute of Physics of the russian academy of sciences Krasnoyarsk 660036Russia Siberian Federal University Krasnoyarsk 660028Russia Siberian State Aerospace University Krasnoyarsk 660037Russia

We have studied processes of interaction of pulsed laser radiation with resonant groups of plasmonic nanoparticles（resonant domains） in large colloidal nanoparticle aggregates having different interparticle gaps and particle size *** processes are responsible for the origin of nonlinear optical effects and photochromic reactions in multiparticle *** describe photo-induced transformations in resonant domains and alterations in their absorption spectra remaining after the pulse action,we introduce the factor of spectral *** on calculation of changes in thermodynamic,mechanical,and optical characteristics of the domains,the histograms of the spectrum photomodification factor have been obtained for various interparticle gaps,an average particle size,and the degree of *** in spectra have been analyzed depending on the intensity of laser radiation and various combinations of size characteristics of *** obtained results can be used to predict manifestation of photochromic effects in composite materials containing different plasmonic nanoparticle aggregates in pulsed laser fields.

关键词： resonant arbitrary pulsed dipole manifestation alterations extinction remaining aggregate colloidal

Chapter 4 Cosmic-Ray Physics

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2022年第3期46卷 85-125页

作者： Benedetto D’Ettorre Piazzoli 刘四明 Domenico della Volpe 曹臻 Andrea Chiavassa Benedetto D’Ettorre Piazzoli 郭义庆 Leonid T.Ksenofontov Olivier Martineau-Huynh Diane Martraire 马玲玲马欣华 Yuri Stenkin 袁强曾厚敦张寿山张毅朱辉 Dipartimento di Fisica dell’Universitàdi Napoli“Federico II” Complesso Universitario di Monte Sant’Angelo80126 NaplesItaly School of Physical Science and Technology Southwest Jiaotong University611756 ChengduSichuanChina Département de Physique Nucléaire et Corpusculaire Facultéde SciencesUniversitéde Genève1211 GenevaSwitzerland Key Laboratory of Particle Astrophyics Institute of High Energy PhysicsChinese Academy of Sciences100049 BeijingChina TIANFU Cosmic Ray Research Center ChengduSichuanChina Dipartimento di Fisica Universitàdegli Studi di TorinoVia Pietro Giuria 1Torino10125Italy Yu.G.Shafer institute of Cosmophysical Research and Aeronomy sb RAS 677027 YakutskRussia Laboratoire de Physique Nucléaire et des Hautes Energies CNRS-IN2P3Universités Paris VI et VIIParisFrance institute for Nuclear Research of russian academy of sciences 117312 MoscowRussia Moscow institute of Physics and Technology 141700 MoscowRussia Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of Sciences210023 NanjingChina National Astronomical Observatories Chinese Academy of Sciences100101 BeijingChina

In the first part of this Chapter the present state of knowledge from the observations of cosmic rays between 10^(13) and 10^(20) eV is *** is not intended to be a complete review,but rather a broad overview of the relevant processes involving cosmic rays,including the astrophysical environments in which they take *** overview mainly concerns experimental results and phenomenological aspects of their interpretation,therefore experiments’description is not given but references to the vast bibliography are provided in the *** attempt is made to address the most popular explanations offered by theoretical *** second part is devoted to the description of the LHAASO performance and of its capability to provide a response to several open questions,still unanswered,concerning cosmic rays above 10^(13) eV,highlighting which major steps forward in this field could be taken from LHAASO observations.

关键词： airshower astroparticle physics cosmic rays particle acceleration and transport Multi-messengers