期刊文献+
共找到7篇文章
< 1 >
每页显示 20 50 100
Petrography of Bethampudi Anorthosites Layered Complex from the Khammam Schist Belt, Telangana, India
1
作者 Thallapalli Brahmaiah Chinthala Ravi +2 位作者 Kandukuri Sai Krishna Gugulothu Papanna Katta Satya Sai Prasad 《Open Journal of Geology》 2016年第11期1434-1456,共24页
The Bethampudi layered anorthosite complex at the border zone of Archaean supracrustal rocks of Khammam district, Eastern Ghats shows normal stratification predominantly in the form of rhythmic layering and often exhi... The Bethampudi layered anorthosite complex at the border zone of Archaean supracrustal rocks of Khammam district, Eastern Ghats shows normal stratification predominantly in the form of rhythmic layering and often exhibits of zebra layering. Graded bedding and cumulate structures are also noticed. The rocks of the study area are classified based on petrography into anorthositic rocks, gabbroic rocks and ultramafic rocks and amphibolites. The field relations and major element composition suggest that these anorthosite rocks are of calc-alkaline in nature and petrogenitically related to the gabbroic rocks by the fractional crystallization at ℃. 展开更多
关键词 Bethampudi layered Anorthosite complex Petrographic Classification Calc Alkaline Nature Fractional Crystallization of Gabbroic Rocks
下载PDF
A Layered Vanadium Oxide with Cobalt(Ⅱ) Coordination Complex: Hydrothermal Synthesis and Crystal Structure of (py)_5Co_2(H_2O)_3[V_4O_(12)]
2
作者 王艳艳 代纪香 张千峰 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2009年第10期1187-1189,共3页
A novel layered mixed metal vanadium-cobadt complex, (py)5Co2(H2O)3[V4O12] 1 (py = pyridine), was hydro(solvo)thermally synthesized and characterized by single-crystal X-ray diffraction. It crystallizes in ort... A novel layered mixed metal vanadium-cobadt complex, (py)5Co2(H2O)3[V4O12] 1 (py = pyridine), was hydro(solvo)thermally synthesized and characterized by single-crystal X-ray diffraction. It crystallizes in orthorhombic, space group Pca21 with a = 17.473(4), b = 11.447(2), c = 17.509(4)A^°, V = 5005.3(7)A^°3, Z = 4, Mr = 3502.1(12), Z = 4, Dc = 1.827 g/cm^3,μ(MoKα) = 2.023 mm^-1, F(000) = 1928, S = 1.020, the final R = 0.0400 and wR= 0.1063 for 6035 observed reflections with I 〉 2σ(I) and 460 variables. Complex 1 consists of tetrahedral VO4 groups to form the large layers which are alternately bonded by two cobalt complex species Co(py)2(H2O)2 and Co(py)3(H2O). 展开更多
关键词 POLYOXOMETALATE layered complex hydrothermal synthesis crystal structure
下载PDF
U-Pb SHRIMP-II Baddeleyite and Zircon Dating of the Early Proterozoic Monchegorsk Layered Mafite-Ultramafite Complex(Kola Peninsula): Evidence of Synchronous Magmatism
3
作者 Nickolay V.Rodionov Anton A.Antonov +1 位作者 Boris V.Belyatsky Sergey A.Sergeev 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第S1期79-80,共2页
The Early Paleoproterozoic Monchegorsk Complex is exposed over an area of 550 km;and comprises two layered mafite–ultramafite intrusions:the Monchepluton of ultramafic and mafic rocks and the predominantly gabbroid
关键词 SHRIMP U-Pb SHRIMP-II Baddeleyite and Zircon Dating of the Early Proterozoic Monchegorsk layered Mafite-Ultramafite complex Pb Kola Peninsula Evidence of Synchronous Magmatism II
下载PDF
Evolutionary dynamics analysis of complex network with fusion nodes and overlap edges 被引量:1
4
作者 YANG Yinghui LI Jianhua +2 位作者 SHEN Di NAN Mingli CUI Qiong 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2018年第3期549-559,共11页
Multiple complex networks, each with different properties and mutually fused, have the problems that the evolving process is time varying and non-equilibrium, network structures are layered and interlacing, and evolvi... Multiple complex networks, each with different properties and mutually fused, have the problems that the evolving process is time varying and non-equilibrium, network structures are layered and interlacing, and evolving characteristics are difficult to be measured. On that account, a dynamic evolving model of complex network with fusion nodes and overlap edges(CNFNOEs) is proposed. Firstly, we define some related concepts of CNFNOEs, and analyze the conversion process of fusion relationship and hierarchy relationship. According to the property difference of various nodes and edges, fusion nodes and overlap edges are subsequently split, and then the CNFNOEs is transformed to interlacing layered complex networks(ILCN). Secondly,the node degree saturation and attraction factors are defined. On that basis, the evolution algorithm and the local world evolution model for ILCN are put forward. Moreover, four typical situations of nodes evolution are discussed, and the degree distribution law during evolution is analyzed by means of the mean field method.Numerical simulation results show that nodes unreached degree saturation follow the exponential distribution with an error of no more than 6%; nodes reached degree saturation follow the distribution of their connection capacities with an error of no more than 3%; network weaving coefficients have a positive correlation with the highest probability of new node and initial number of connected edges. The results have verified the feasibility and effectiveness of the model, which provides a new idea and method for exploring CNFNOE's evolving process and law. Also, the model has good application prospects in structure and dynamics research of transportation network, communication network, social contact network,etc. 展开更多
关键词 complex network with fusion nodes and overlap edges(CNFNOEs) interlacing layered complex networks(ILCN) local world dynamic evolvement split saturation attraction factor
下载PDF
Formation of transgressive anorthosite seams in the Bushveld Complex via tectonically induced mobilisation of plagioclase-rich crystal mushes 被引量:2
5
作者 Wolfgang D.Maier Bartosz T.Karykowski Sheng-Hong Yang 《Geoscience Frontiers》 SCIE CAS CSCD 2016年第6期875-889,共15页
The formation of anorthosites in layered intrusions has remained one of petrology's most enduring enigmas. We have studied a sequence of layered chromitite, pyroxenite, norite and anorthosite overlying the UG2 chromi... The formation of anorthosites in layered intrusions has remained one of petrology's most enduring enigmas. We have studied a sequence of layered chromitite, pyroxenite, norite and anorthosite overlying the UG2 chromitite in the Upper Critical Zone of the eastern Bushveld Complex at the Smokey Hills platinum mine. Layers show very strong medium to large scale lateral continuity, but abundant small scale irregularities and transgressive relationships. Particularly notable are irregular masses and seams of anorthosite that have intrusive relationships to their host rocks. An anorthosite layer locally transgresses several 10 s of metres into its footwall, forming what is referred to as a "pothole" in the Bushveld Complex. It is proposed that the anorthosites formed from plagioclase-rich crystal mushes that originally accumulated at or near the top of the cumulate pile. The slurries were mobilised during tectonism induced by chamber subsidence, a model that bears some similarity to that generally proposed for oceanic mass flows. The anorthosite slurries locally collapsed into pull-apart structures and injected their host rocks. The final step was down-dip drainage of Fe-rich intercumulus liquid, leaving behind anorthosite adcumulates. 展开更多
关键词 Anorthosite layered intrusion Bushveld complex South Africa Chromitite
下载PDF
Novel hybrids of Cu^(2+) ternary complexes of salicylidene-amino acid Schiff base with phenanthroline(or bipyridine) intercalated in Mg/Al-NO_3-layered double hydroxide 被引量:2
6
作者 Ming-Zhao Wang Ying Li +4 位作者 Jin-Jin Ji Gai-Ling Huang Xin Zhang Si-Hui Li Xiao-Jing Yang 《Chinese Chemical Letters》 SCIE CAS CSCD 2013年第7期593-596,共4页
Four Cu2+ complexes of salicylidene-amino acid Schiff base with 1,10-phenanthroline (Phen) or 2,2'- bipyridine (Bipy) were successfully intercalated in interlayer galleries of Mg/AI-NO3-1ayered double hydroxide ... Four Cu2+ complexes of salicylidene-amino acid Schiff base with 1,10-phenanthroline (Phen) or 2,2'- bipyridine (Bipy) were successfully intercalated in interlayer galleries of Mg/AI-NO3-1ayered double hydroxide (LDH) by the swelling-restored method. The hybrids were characterized by elemental analysis, X-ray diffraction, FT-IR spectra, UV-vis DRS, TG-DTA and SEM observation. Good protection of the complexes by LDH in neutral and weak acidic solutions was revealed by UV spectra, cyclic voltammograms and luminescence spectra. 展开更多
关键词 layered double hydroxides Ternary copper complexes Intercalation Characterization Stability in solution
原文传递
Higher order implicit CNDG-PML algorithm for left-handed materials
7
作者 CHEN Yanfang WANG Liwei 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2021年第1期31-37,共7页
By incorporating the higher order concept,the piecewise linear recursive convolution(PLRC)method and CrankNicolson Douglas-Gunn(CNDG)algorithm,the unconditionally stable complex frequency shifted nearly perfectly matc... By incorporating the higher order concept,the piecewise linear recursive convolution(PLRC)method and CrankNicolson Douglas-Gunn(CNDG)algorithm,the unconditionally stable complex frequency shifted nearly perfectly matched layer(CFS-NPML)is proposed to terminate the left-handed material(LHM)domain.The proposed scheme takes advantages of CFSNPML formulation,the higher order concept PLRC method and the unconditionally stable CNDG algorithm in terms of absorbing performance,computational efficiency,calculation accuracy and convenient implementation.A numerical example is carried out to demonstrate the effectiveness and efficiency of the proposed scheme.The results indicate that the proposed scheme can not only have considerable absorbing performance but also maintain the unconditional stability of the algorithm with the enlargement of time steps. 展开更多
关键词 complex frequency shifted nearly perfectly matched layer(CFS-NPML) Crank-Nicolson Douglas-Gunn(CNDG) left-handed material(LHM) piecewise linear recursive convolution(PLRC)
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部