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中国北方盆地大规模铀成矿作用:地层篇

地质学报 2024年第7期98卷 1953-1976页

作者：程银行金若时 Michel CUNEY v.A.petrov 苗培森中国地质调查局天津地质调查中心(华北地质科技创新中心) 天津300170 中国地质调查局铀矿地质重点实验室天津300170 法国洛林大学资源学院法国NancyF54500 俄罗斯科学院矿床地质、岩石学、矿物学和地球化学研究所俄罗斯Moscow119017

“红黑”耦合沉积建造是中国北方中—新生代盆地(简称北方盆地)砂岩型铀矿的重要控矿要素之一,在勘查实践中得到了广泛证实和应用,指导发现找矿靶区和矿产地300余处,在成矿理论方面取得重要进展。本文系统总结了北方产铀盆地的60万余米... 详细信息

“红黑”耦合沉积建造是中国北方中—新生代盆地(简称北方盆地)砂岩型铀矿的重要控矿要素之一,在勘查实践中得到了广泛证实和应用,指导发现找矿靶区和矿产地300余处,在成矿理论方面取得重要进展。本文系统总结了北方产铀盆地的60万余米铀矿岩芯钻探成果,通过典型矿床赋矿层沉积学、地球化学等对比研究,系统分析了北方盆地侏罗系、白垩系、新近系等赋矿层形成的沉积环境、物质组成等,进一步明确了制约成矿流体运移、铀矿物沉淀的赋矿层条件。结果显示:①北方盆地自侏罗纪以来,发育了Ⅰ中侏罗世—晚侏罗世早期(Bathonian-Oxfordian)、Ⅱ早白垩世早期(v.langinian)、Ⅲ早白垩世晚期(Aptian)、Ⅳ晚白垩世早期(Cenomanian)、Ⅴ晚白垩世晚期—早古近纪(Campanian-Thanetian)、Ⅵ早新近纪(Aquitanian-Burdigalian)和Ⅶ晚新近纪(ZancleanPiacenzian)7期红层,与下伏富还原性组分的黑色层构成了典型的对偶沉积建造,为北方盆地大规模成矿奠定了赋矿层基础。②地球化学指标显示:红层中Fe^(2+)/Fe^(3+)比值介于0.29~1.47(n=78),黑层Fe^(2+)/Fe^(3+)比值介于0.57~53.96(n=223),赋矿层Fe^(2+)/Fe^(3+)比值介于1.00~26.45(n=52)。赋矿层、黑层Fe^(2+)/Fe^(3+)比值一般大于1,以发育黄铁矿、炭屑、油斑为特征,为相对较还原的环境。红层Fe^(2+)/Fe^(3+)比值一般小于1,以发育钙质结核为特征,为相对较强氧化的环境。③总有机碳含量显示红层为0~0.16%(n=107),含矿层为0.01%~2.65%(n=137),黑层为0.01%~2.66%(n=339),含矿层总有机碳含量略低于黑层,与铀矿的富集沉淀有密切关系。④砂岩型铀矿体呈“板状”或“楔状”产出于黑层顶部的灰色、灰绿色砂岩和细砂岩,甚至泥岩,红层为含氧含铀流体的运移通道,黑层为含氧含铀流体的富集沉淀的化学屏障。因此,北方盆地红层和黑层对偶沉积、旋回充填是大规模铀成矿必要的地层条件,这些认识打破常规思维,“红黑”旋回叠加导致了北方盆地多层成矿的现象,矿体一般呈板状就位于红层和黑层的过渡带,这对深入理解砂岩型铀矿成矿环境、成矿规律及成矿机理等工作和勘查工作部署具有重要实践意义。

关键词：北方中—新生代盆地砂岩型铀矿大规模成矿沉积环境赋矿层

First results of turbulence inv.stigation on Globus-M2 using radial correlation Doppler reflectometry

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Plasma Science and Technology 2024年第10期26卷 49-55页

作者： A.PONOMARENKO A.YASHIN v.GUSEv.E.KISELEv.G.KURSKIEv.v.MINAEv.Y.petrov N.SAKHAROv.P.SHCHEGOLEv.E.TKACHENKO N.ZHILTSOv Peter the Great St.Petersburg Polytechnic Univ.rsity St.Petersburg 195251Russia Ioffe Institute St.Petersburg 194064Russia

The first results of inv.stigation of the turbulence structure using Doppler backscattering(DBS)on the Globus-M2 tokamak are presented.A one-channel DBS system with a v.riable probing frequency within the 18–26 GHz range was installed to inv.stigate the edge plasma at normalized minor radiiρ=0.9–*** correlation Doppler reflectometry was used to study the changes in turbulence eddies after the LH *** analysis was applied to the phase deriv.tiv. of complex in-phase and quadrature(IQ)signals of the DBS diagnostic as it contains information about the poloidal plasma rotation *** L-mode,the radial correlation length L_(r)is estimated to be 3 cm and after transition to H-mode reduces to approximately 2 *** modelling in a linear local approximation using code GENE indicates that the instability with positiv. growth rate at the normalized minor radiusρ=0.75 in L-mode and H-mode on Globus-M2 was the ion temperature gradient(ITG)mode.

关键词： tokamak turbulence Doppler backscattering correlation reflectometry

Specificity of electrophysical and gas-sensitiv. properties of nanocomposite ZnO–TiO_(2) films formed by solid-phase pyrolysis

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ChemPhysMater 2024年第3期3卷 314-319页

作者： v.ctor v.petrov Maria G.v.lkov. Alexsandra P.Iv.nishchev. Gleb v.Tolstyak Ekaterina M.Bayanb Institute of Nanotechnologies Electronicsand Equipment EngineeringSouthern Federal UniversityTaganrog 347922Russia Faculty of Chemistry Southern Federal UniversityRostov-on-Don 344090Russia

ZnO–TiO_(2) thin films containing 0.5 mol%,1.0 mol%,and 5.0 mol%ZnO were synthesized by oxidativ. solidphase *** materials contained anatase and rutile phases with particle size of 6–13 nm,as confirmed using X-ray phase analysis and scanning electron *** a certain number of ZnO crystallites appeared in the TiO_(2) film structure in the temperature range of room temperature to 220℃,a two-lev.l response of the film resistance was observ.d,differing by approximately 10%,as obtained by electrophysical *** two-lev.l response correlates with the formation of two donor energy lev.ls of 0.28 and 0.33 ev.in the band structure of the ZnO–TiO_(2) *** donor lev.l with a higher activ.tion energy corresponded to the Ti v.cancy(v.Ti),and that with a lower activ.tion energy corresponded to the Zn v.cancy(v.Zn).Two lev.ls of gas-sensitiv. properties were noted for 0.5ZnO–TiO_(2),1ZnO–TiO_(2),and 5ZnO–TiO_(2) under the influence of 50 ppm NO_(2) at 250℃.Such two-lev.l responses can be ascribed to the pinning of the Fermi lev.l on ZnO and TiO_(2) *** mechanism of the beak-shaped and two-lev.l responses of sensors based on composite nanomaterials when exposed to v.rious gases was elucidated.

关键词： Thin film ZnO TiO_(2) Nanocomposites Pyrolysis Gas sensors

Inv.stigation of WZ Sge-type Dwarf Nov. ASASSN-19oc:Optical Spectroscopy and Multicolor Light Curv. Analysis

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Research in Astronomy and Astrophysics 2024年第8期24卷 20-31页

作者： v.ktoriia Krushev.ka Sergey Shugarov.Paolo Ochner Yuliana Kuznyetsov. Mykola petrov Peter Kroll Astronomical Institute of the Slov.k Academy of Sciences Tatranska Lomnica05960 VysokéTatrySlovakia Main Astronomical Observ.tory of NAS of Ukraine 27 Akademika Zabolotnoho St.03143 KyivUkraine INAF—Osserv.torio Astronomico di Padov. Vicolo dell’Osservatorio 5I-35122 PadovaItaly Department of Physics and Astronomy University of PadovaVia F.Marzolo 8I-35131 PadovaItaly Max Planck Computing and Data Facility(MPCDF) Gießenbachstrasse 2D-85748 GarchingGermany Sonneberg Observ.tory Sternwartestr.32D-96515 SonnebergGermany

In this study,we present an inv.stigation of the newly discov.red dwarf nov. ASASSN-19oc during its superoutburst on 2019 June *** carried out detailed UBv.cIc-photometric observ.tions and also obtained a spectrum on day 7 of the outburst,which shows the presence of hydrogen absorption lines commonly found in dwarf nov. *** of photometric data rev.als the occurrence of early superhumps in the initial days of observ.tions,followed by ordinary and late *** hav. accurately calculated the period of the ordinary superhumps as Pord=0.05681(10)days and determined the periods at different stages,as well as the rate of change of the superhump period(P_(dot)=(5)P/P=8.1×10^(-5)).Additionally,we hav. deriv.d the mass ratio of the components(q=0.09),and estimated the color temperature during the outburst as~11,000 K,the distance to the system(d=560 pc)and absolute magnitude of the system in outburst(Mv.5.3).We hav. shown that outbursts of this star are v.ry rare:based on brightness measurements on 600 archiv.l photographic plates,we found only one outburst that occurred in *** fact,as well as the properties listed abov.,conv.ncingly shows that the v.riable ASASSN-19oc is a dwarf nov. of WZ Sge type.

关键词： (stars)binaries(including multiple) close-(stars)nov.e-cataclysmic v.riables-stars dwarf nov.e

Enhanced electric-field induced strain in Eu^(3+) doped 0.67BiFeO_(3)-0.33BaTiO_(3) lead-free piezoelectric ceramics

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Journal of Rare Earths 2024年第9期42卷 1747-1754,I0004页

作者： Wei Li Tongxiang Liang Xiang He v.unov.oleg Dongfang Pang Shan Wu College of Rare Earths Jiangxi University of Science and TechnologyGanzhou341000China Key Laboratory of High Performance Ceramics and Ultrastructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai201800China

Lead-free ferroelectric ceramics,0.67Bi_(1-x)Eu_(x)FeO_(3)-0.33BaTiO_(3)(BF-BT-xEu,x=0-0.02),were prepared v.a a solid-state reaction,The effect of Eu^(3+) doping on the microstructure,dielectric properties,ferroelectric properties,and electric-field-induced strain was *** X-ray diffraction(XRD) results indicate the presence of a mixed phase of tetragonal and rhombohedral at the morphotropic phase boundary(MPB).Doping with an appropriate amount of Eu^(3+) reduces the Fe^(3+) content and decreases the leakage current in the binary system.A conv.rse piezoelectric coefficient(d_(33)*) of 392 pm/v.is obtained at BF-BT-0.003Eu under an electric field of 60 kv.cm at room temperature,which has a Curie temperature(T_(C)) of 414℃,The unipolar strain and d_(33)* of BF-BT-0.003Eu ceramics increase to 0.438%and 730 pm/v.at 125℃ The field-induced strain response of the BF-BT-0.003Eu ceramics is greater than that of 0.67BF-0.33BT,mainly due to its optimal grain size,reduction of leakage current,and coexistence of ferroelectric-relaxation phases,BF-BT-0.003Eu ceramic is a lead-free candidate for high-temperature actuator applications.

关键词： Ferroelectric Field-induced strain Ceramics Lead-free Rare earths

巴伦支海-喀拉海油气区的地质演化-俄罗斯自然资源部全俄地质研究所、挪威地质研究所，挪威石油管理局，挪威海德罗石油公司共同参与的综合研究项目

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海洋地质 2008年第3期24卷 67-68页

作者： oleg v. petrov Morten Smelror Jorg Ebbing Laurent Gemigo Tatyana Koren Geir Birger Larssen Tamara Litv.nov. Eugeny O. petrov Hans - Iv.r Sjulstad Nikolai Sobolev.v.ktor v.siliev.Stephanie G.Wemer 吴峧歧（译）邱燕（校对）俄罗斯自然资源部全俄地质研究所挪威地质调查局挪威海德罗石油公司挪威石油管理局不详

GeoBase项目的主要目标是创建巴伦支海和喀拉海油气区的构造地层和古地理模式。该项目应用了俄罗斯和挪威已有的地质、地球物理数据和各学科的综合解释成果，包括潜在油气区的资料、布置适当的地震测线，再用深、浅钻孔资料和周围的露... 详细信息

GeoBase项目的主要目标是创建巴伦支海和喀拉海油气区的构造地层和古地理模式。该项目应用了俄罗斯和挪威已有的地质、地球物理数据和各学科的综合解释成果，包括潜在油气区的资料、布置适当的地震测线，再用深、浅钻孔资料和周围的露头做校正，等等。本次研究建立了巴伦支海、北伯朝拉地区和喀拉海大地构造、地质结构和古地理格架。这项综合性研究至关重要，是了解油气源岩和潜在储层空间分布的科学方法，又是鉴别巴伦支海油气成藏的基础。

关键词：地质研究所巴伦支海油气区喀拉海俄罗斯自然资源部石油管理局地质演化

CCD/EMCCD光电参数测试系统的设计与应用

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中国光学（中英文） 2024年第3期17卷 693-703页

作者：沈吉 v.ACHESLAv.v.Zabudsky 常维静那启跃简云飞 oleg v.Rikhalsky OLEKSANDR G.Golenkov.v.LODYMYR P.Rev. 华东光电集成器件研究所江苏苏州215263 乌克兰科学院v.E.Lashkaryov.导体物理研究所乌克兰基辅01001 乌克兰科学院Bogomoletz生理学研究所乌克兰基辅01001

本文开发了一种用于测量CCD和EMCCD(电子倍增CCD)芯片光电参数的测试系统。该测试系统通过自动模式或手动模式间的切换,测量器件的暗电流、读出放大器的响应度、电荷转移效率、电荷容量和其他参数。该测试系统可以针对不同规格和结构的C... 详细信息

本文开发了一种用于测量CCD和EMCCD(电子倍增CCD)芯片光电参数的测试系统。该测试系统通过自动模式或手动模式间的切换,测量器件的暗电流、读出放大器的响应度、电荷转移效率、电荷容量和其他参数。该测试系统可以针对不同规格和结构的CCD/EMCCD器件,实现CCD晶圆或封装好的成品的参数测试,实现576×288、640×512、768×576、1024×1024、1280×1024 CCD/EMCCD的测试和筛选。

关键词： CCD EMCCD 测试系统光电参数

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Energy of a solid sphere under nonstationary oscillations

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Science China(Physics,Mechanics & Astronomy) 2014年第3期57卷 469-476页

作者： petrov Yu. SMIRNOv.v. UTKIN A. BRATOv.v. St.-Petersburg State Univ.rsity Institute of Problems of Mechanical Engineering Russian Academy of Sciences St.-Petersburg State Transport Univ.rsity

Analytical solution for spherically symmetric nonstationary oscillations of acoustic and elastic solid sphere is *** dependence of potential,kinetic and internal energy of a solid sphere is *** receiv.d results are of practical importance for a wide range of problems connected to testing of material dynamic strength parameters and to the problems of optimizing(minimizing)energy needed for fracture of solids.

关键词： nonstationary oscillations analytical solution material dynamics dynamic elastisity kinetic energy potential energy internal energy energy exchange

Inv.stigation of electrophysical, photo- and gas-sensitiv. properties of ZnO–SnO_(2) sol–gel fflms

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Journal of Adv.nced Dielectrics 2024年第1期14卷 42-50页

作者： Irina A.Gulyaev. Alexandra P.Iv.nishev. Maria G.v.lkov. v.ctoria Yu.Storozhenko Soslan A.Khubezhov.Ekaterina M.Bayan v.ctor v.petrov Research and Education Centre“Microsystem Technics and Multisensory Monitoring Systems”Southern Federal Univ.rsity Russia Department of Chemistry Southern Federal UniversityRussia Department of Physics North-Ossetian State University362025 VladikavkazRussia Department of Physics and Engineering ITMO University191002 PetersburgRussia

Thin nanocomposite fflms based on tin dioxide with a low content of zinc oxide(0.5–5 mol.%)were obtained by the sol–gel *** synthesized fflms are 300–600 nm thick and contains pore sizes of 19–29 *** resulting ZnO–SnO_(2) fflms were comprehensiv.ly studied by atomic force and Kelv.n probe force microscopy,X-ray diffraction,scanning electron microscopy,and high-resolution X-ray photoelectron spectroscopy *** photoconductiv.ty parameters on exposure to light with a wav.length of 470 nm were also *** study of the photosensitiv.ty kinetics of ZnO–SnO_(2) fflms showed that the fflm with the Zn:Sn ratio equal to 0.5:99.5 has the minimum v.lue of the charge carrier generation time *** of the activ.tion energy of the conductiv.ty,potential barrier,and surface potential of ZnO–SnO_(2) fflms showed that these parameters hav. maxima at ZnO concentrations of 0.5 mol.%and 1 mol.%.Films with 1 mol.%ZnO exhibit high response v.lues when exposed to 5–50 ppm of nitrogen dioxide at operating temperatures of 200℃ and 250℃.

关键词： Sol–gel method,ZnO–SnO_(2) films gas-sensitiv. properties surface potential potential barrier conduction activ.tion energy