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Geochemistry of the Paleocene Clastic Rocks in Lishui Sag, East China Sea Shelf Basin： Implications for Tectonic Background and Provenance

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Acta Geologica Sinica(English Edition) 2016年第1期90卷 166-181页

作者： LI Deyong jiang Xiaodian XU fa LIU Jinshui HOU Guowei College of Marine Geosciences Ocean University of ChinaQingdao 266100ShandongChina Key Lab of Submarine Geosciences and Prospecting Techniques Ministry of EducationQingdao 266100ShandongChina Shanghai Branch China National Offshore Oil Co.Ltd.Shanghai 200030China

The Lishui Sag, in the East China Sea Shelf Basin, is rich in hydrocarbons, with the major hydrocarbon-bearing layers being the Paleocene Mingyuefeng clastic rocks. Analysis of the implicit geologic background information of these Paleocene clastic rocks using petrological and geochemical methods has significant practical importance. These Paleocene sandstones are mainly lithic arenite, lithic arkose and greywacke, composed of K-feldspar, plagioclase, authigenic clays, silica and carbonates. As continental deposits, Yueguifeng clastic rocks have high aluminosilicate and mafic detritus contents, while the Lingfeng and Mingyuefeng Formations are rich in silica due to an oscillating coastal marine depositional environment. The major element contents of these Paleocene sandstones are low and have a concentrated distribution, indicating that the geochemical composition is non-epigenetic, transformed by sedimentary processes and diagenesis. The Yueguifeng detritus comprises recycled sediments, controlled by moderate weathering and erosion, while the Lingfeng and Mingyuefeng detritus is interpreted as primarily first-cycle materials due to low chemical weathering. In the Late Cretaceous to Early Paleocene, the Pacific Plate began subducting under the Eurasian Plate, causing an orogeny by plate collision and magma eruption due to the melting of subducted oceanic crust. This resulted in the dual tectonic settings of ＂active margin＂ and ＂continental island arc＂ in the East China Sea Shelf Basin. During the Late Paleocene, the Pacific Plate margin migrated eastward along with development of the Philippine Ocean Plate, and the tectonic setting of the Lishui Sag gradually turned into a passive continental margin. Detrital sources included both orogenic continental blocks and continental island arcs, and the parent rocks are primarily felsic volcanic rocks and granites.

关键词： geochemistry Paleocene tectonic background provenance Lishui sag

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Recent Advances in Base-Metal-Catalyzed Carbonylation of Unactivated Alkyl Electrophiles

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Chinese Journal of Chemistry 2023年第23期41卷 3419-3432页

作者： Wei Li Donghao jiang cheng Wang Li-Jie cheng State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangshaHunan410082 China State Key Laboratory of Elemento-Organic Chemistry Nankai UniversityTianjin300071 China

Transition metal-catalyzed carbonylation reactions represent a direct and atom-economical approach to synthesize carbonyl compounds or their derivatives by using CO as a cheap and readily available C1 *** carbonylation of C(sp^(2))-hybridized electrophiles (e.g.,aryl halides) is well developed,carbonylation of less reactive unactivated alkyl electrophiles remains ***,the use of earth-abundant base metals including Cu,Co,Mn,Fe,Ni as catalysts has enabled advances in carbonylative coupling of alkyl electrophiles for approaching diverse carbonyl compounds or their derivatives,notably,some of which are of synthetic importance but difficult to be synthesized through previous reported ***,we have summarized and discussed these recent achievements in base-metal-catalyzed carbonylative C—C,C—N,C—O,C—X coupling and other carbonylation reactions of unactivated alkyl electrophiles using CO as C1 source.

关键词： Base-metal catalyst Carbonylation Unactivated alkyl electrophiles Radical Carbon monoxide(CO)

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Angle-resolved spectra of the direct above-threshold ionization of diatomic molecule in IR + XUV laser fields

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Chinese Physics B 2019年第2期28卷 185-191页

作者： Shang Shi fa-cheng Jin Bing-Bing Wang Laboratory of Optical Physics Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences faculty of Science Xi'an Aeronautical University

The direct above-threshold ionization(ATI) of diatomic molecules in linearly-polarized infrared and extreme ultraviolet(IR+XUV) laser fields is investigated by the frequency–domain theory based on the nonperturbative quantum electrodynamics. The destructive interference fringes on the angle-resolved ATI spectra, which are closely related to the molecular structure, can be well fitted by a simple predictive formula for any alignment of the molecular axis. By comparing the direct ATI spectra for monochromatic and two-color laser fields, we found that the XUV laser field can both raise the ionization probability and the kinetic energy of the ionized electron, while the infrared(IR) laser field can broaden the energy distribution of the ionized electron. Our results demonstrate that, by using IR+XUV two-color laser fields, the angle-resolved spectra of the direct ATI can image the structural information of molecules without considering the recollision process of the ionized electron.

关键词： above-threshold ionization IR+XUV laser fields molecular structure

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Snake Model for the Extraction of Loess Shoulder-line from DEMs

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Journal of Mountain Science 2014年第6期11卷 1552-1559页

作者： YAN Shi-jiang TANG Guo'an LI fa-yuan ZHANG Lei Key laboratory of Virtual Geographic Environment Ministry of Education Nanjing Normal University School of Resource and Environmental Engineering Anhui University

Shoulder lines are the most important landform demarcations for geographical analysis,soil erosion modeling and land use planning in the Loess Plateau area of *** paper proposes an automatic,effective and accurate method of determining loess shoulder line from DEMs by integrating a hydrological D8 algorithm and a snake *** watershed boundary line is adopted as the initial contour which evolves to identify the exact position of loess shoulder-line by the guidance of an external force of snake model from *** show that the method overcomes the difficulties in both threshold selection for edge detection and the disconnecting issues in former extraction *** accuracy evaluation of shoulder-line maps from the two test sites of the loess plateau area show obvious improvements in the *** average contour matching distance of the new method is 12.0 m on 5 m resolution DEM,and shows improvement in the accuracy and *** comparisons of accuracy evaluations of the two test sites show that the snake model method performs better in the loess plain area than in the area with high gully density.

关键词： Snake model DEM loess shoulder-line

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Effects of Mineral Composition and Microstructure on Crack Resistance of Sintered Ore

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Journal of Iron and Steel Research International 2006年第4期13卷 9-12页

作者： YING Zi-wei jiang Mao-fa XU Li-xian School of Materials and Metallurgy Northeastern University Shenyang 110004 Liaoning China

Vickers indentation test was used to study the effects of mineral composition and microstructure on crack resistance of sintered ore, and the initiation and propagation of cracks in different minerals contained in sintered ore were examined. The results indicate that the microstructure of calcium ferrites is a major factor influencing crack resistance of sintered ore. Finer grain size of calcium ferrite will lead to higher cracking threshold and better crack resistance of sintered ore. The formation of calcium ferrite with fine grain size during sintering process is favorable for crack resistance of sintered ore.

关键词： calcium ferrite crack fracture toughness cracking threshold

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Scheme for Generation of Maximally Entangled States via Entanglement Swapping

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Communications in Theoretical Physics 2006年第3X期46卷 553-555页

作者： WU Zhen-Zhen faNG Mao-fa jiang Chun-Lei College of Physics and Information Science Hunan Normal University Changsha 410081 China

Based on two atoms and two cavities initially in two pairs of atom-photon nonmaximally entangled states, we propose a relatively simple scheme to create maximally entangled photon-photon and atom-photon states via entanglement swapping using techniques of cavity QED inspired by the scheme proposed in [Phys. Rev. A 71 （2005） 044302] and [Phys. Rev. A 71 （2005） 034312]. Our scheme does not involve the measurement in Bell basis, we only require detecting the states of atoms.

关键词： quantum entanglement entanglement swapping cavity QED

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Dissolution of Al_2TiO_5 inclusions in CaO-SiO_2-Al_2O_3 slags at 1823 K

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International Journal of Minerals,Metallurgy and Materials 2011年第6期18卷 646-651页

作者： De-yong Wang Jun Liu Mao-fa jiang Fumitaka Tsukihashi Hiroyuki Matsuura School of Materials and Metallurgy Northeastern University Shenyang 110004 China Department of Advanced Materials Science Graduate School of Frontier Sciences Tokyo University Chiba 277-8561 Japan

Al-Ti-O inclusions always clog submerged nozzles in Ti-bearing Al-killed steel.A typical synthesized Al2TiO5 inclusion was immersed in a CaO-SiO2-Al2O3 molten slag for different durations at 1823 *** Al2TiO5 dissolution paths and mechanism were revealed by scanning electron microscopy （SEM） and energy dispersive spectroscopy （EDS）.Decreased amounts of Ti and Al and increased amounts of Si and Ca at the dissolution boundary prove that inclusion dissolution and slag penetration simultaneously ***2 diffuses or penetrates the inclusion more quickly than CaO,as indicated by the w（CaO）/w（SiO2） value in the reaction region.A liquid product （containing 0.7-1.2 w（CaO）/w（SiO2）,15wt%-20wt% Al2O3,and 5wt%-15wt% TiO2） forms on the inclusion surface when Al2TiO5 is dissolved in the ***2TiO5 initially dissolves faster than the diffusion rate of the liquid product toward the bulk *** increasing reaction time,the boundary reaches its largest distance,the Al2TiO5 dissolution rate equals the liquid product diffusion rate,and the dissolution process remains stable until the inclusion is completely dissolved.

关键词： steelmaking aluminium titante molten slag inclusions dissolution

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Inversion of UEP signatures induced by ships based on PSO method

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Defence Technology（防务技术） 2020年第1期16卷 172-177页

作者： Yu Peng Jin-fang cheng Run-xiang jiang Military Key Laboratory for Military Target Characteristics Naval University of EngineeringWuhan 430033PR China College of Weaponry Engineering Naval University of EngineeringWuhan 430033PR China

To model the underwater electric potential(UEP) of ships,a multiple point-electrodes method is commonly ***,it is difficult to determine the total number of point-electrodes,their respective positions and current *** this paper,the particle swarm optimization(PSO) method is applied to solve the number,positions and current values of these point-electrodes according to the UEP distribution at a known depth below the keel of a ship.A scaled ship model experiment is carried out to determine the effectiveness of the *** results show that for hulls in a latural corrosion or cathodic protection state,the UEP inversion accuracy can reach 85% at different depths below the *** method is suitable for software implementation and can help the simulation and prediction of UEP signatures.

关键词： UEP PSO Inversion Point-electrode

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Influence of urban morphological parameters on the distribution and diffusion of air pollutants: A case study in China

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Journal of Environmental Sciences 2021年第7期33卷 163-172页

作者： Zhiwen jiang Haomiao cheng Peihao Zhang Tianfang Kang Key Laboratory of Beijing on Regional Air Pollution Control Faculty of Environment and LifeBeijing University of TechnologyBeijing 100124China College of Architecture and Urban Planning Beijing University of TechnologyBeijingChina

Air pollution has a serious fallout on human health,and the influences of the different urban morphological characteristics on air pollutants cannot be *** this study,the relation-ship between urban morphology and air quality(wind speed,CO,and PM_(2.5))in residential neighborhoods at the meso-microscale was *** changes in the microclimate and pollutant diffusion distribution in the neighborhood under diverse weather conditions were simulated by Computational Fluid Dynamics(CFD).This study identified five key urban morphological parameters(Building Density,Average Building Height,Standard Deviation of Building Height,Mean Building Volume,and Degree of Enclosure)which significantly im-pacted the diffusion and distribution of pollutants in the *** findings of this study suggested that three specific strategies(*** of a single building should be re-duced,DE should be increased)and one comprehensive strategy(the width and height of the single building should be reduced while the number of single buildings should be in-creased)could be illustrated as an optimized approach of urban planning to relief the air *** result of the combined effects could provide a reference for mitigating air pollution in sustainable urban environments.

关键词： Air pollution Urban form index CFD Residential planning PM_(2.5) CO

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Information manifold and fault detection of multi-agent systems

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Chinese Journal of Aeronautics 2024年第10期37卷 410-423页

作者： Ruotong QU Bin jiang Yuehua cheng Xiaodong HAN College of Automation Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China China Academy of Space Technology Beijing 100098China

With the increase of the number of agents in multi-agent systems and the rapid increase of the complexity of the overall structure of the system,the fault detection and diagnosis work has brought great *** have carried out considerable research work on fault detection and diagnosis of multi-agent systems,but there is no research on fault state estimation and diagnosis based on the information and state of the whole multi-agent *** on the global perspective of information geometry theory,this paper presents two new physical quantities of the information manifold of multi-agent systems,as Lagrangian and energy–momentum tensor,to express the state of the overall information of multi-agent systems,and to characterize the energy state and development trend of *** this paper,two new physical parameters are introduced into the research of multi-agent fault detection and diagnosis,and the fault state and trend of multi-agent system are evaluated from the global perspective,which provides more comprehensive theoretical support for designing more scientific and reasonable fault diagnosis and fault recovery *** of the application example confirms the competitive performance of the proposed method.

关键词： Multi-Agent Systems(MASs) fault information manifold Lagrangian fault detection Energy-momentum Tensor

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