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Potash–Forming Regularity of the Ordovician Marine Northern Shaanxi Salt Basin: Insight from Review and Prospect of the Deep Geology of the Ordos Basin

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Acta Geologica Sinica(English Edition) 2018年第4期92卷 1627-1644页

作者： wang zhentao ZHENG Mianping Ministry of Natural Resources Key Laboratory of Saline Lake Resources and Environments Institute of Mineral Resources China Academy of Geological Sciences

The Ordovician Northern Shaanxi Salt Basin （ONSSB）, located in the east-central Ordos Basin, western North China Craton （NCC）, is one of the largest marine salt basins yet discovered in China. A huge amount of halite deposited in the Mid-Ordovician Majiagou Formation, and potash- containing indication and local thin layer of potash seam were discovered in O2m^65 （6th submember, 5th member of the Majiagou Formation）. This makes ONSSB a rare Ordovician potash-containing basin in the world, and brings new hope for prospecting marine solid potash in this basin. However, several primary scientific problems, such as the coupling relationship between ONSSB and the continent nucleus, how the high-precision basement fold controls the ONSSB, and how the basement faults and relief control ONSSB, are still unclear due to the limitations of the knowledge about the basement of the Ordos Basin. This has become a barrier for understanding the potash-forming regularity in the continental nucleus （CN） area in marine salt basin in China. Up to now, the material accumulation has provided ripe conditions for the answers to these questions. Latest zircon U-Pb ages for the basement samples beneath the Ordos Basin reveal that there exists a continental nucleus （Yi-Meng CN） beneath the northern Ordos Basin. And this brings light into the fact that the ONSSB lies not overlying on the Yi- Meng CN but to south Yi-Meng CN. Both do not have superimposed relationship in space. And borehole penetrating into the basement reached Palaeoproterozoic meta-sedimentary rocks, which suggests the ONSSB is situated in the accretion belt of Yi-Meng CN during geological history. Basement relief beneath the ONSSB area revealed by seismic tomography and aeromagnetic anomaly confirms the existence of basement uplift and faults, which provides tectonic setting for sedimentary center migration of the ONSSB. Comparative research with various data sources indicates that the expanding strata in the ONSSB adopted the

关键词： Ordos Basin Northern Shaanxi Salt Basin continental nucleus aeromagnetic anomaly coupling relationship

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Characteristics of the crystalline basement beneath the Ordos Basin:Constraint from aeromagnetic data

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Geoscience Frontiers 2015年第3期6卷 465-475页

作者： zhentao wang Hongrui Zhou Xunlian wang Xiuchun Jing School of Earth Sciences and Resources China University of Geosciences

Aeromagnetic anomaly zonation of the Ordos Basin and adjacent areas was obtained by processing high-precision and large-scale aeromagnetic anomalies with an approach of reduction to the pole upward continuation. Comparative study on aeromagnetic and seismic tomography suggests that aeromagnetic anomalies in this area are influenced by both the magnetic property of the rock and the burial depth of the Precambrian crystalline basement. Basement depth might be the fundamental control factor for aeromagnetic anomalies because the positive and negative anomalies on the reduction to the pole- upward-continuation anomaly maps roughly coincide with the uplifts and depressions of the crystalline basement in the basin. The results, together with the latest understanding of basement faults, SHRIMP U-Pb zircon dating of metamorphic rock and granite, drilling data, detrital zircon ages, and gravity data interpretation, suggest that the Ordos block is not an entirety of Archean.

关键词： North China Craton Ordos Basin Aeromagnetic anomaly Continental nucleus Basement

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Formation of mono-dispersed droplets with electric periodic dripping regime in electrohydrodynamic(EHD) atomization

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Chinese Journal of Chemical Engineering 2020年第5期28卷 1241-1249页

作者： zhentao wang Qisi wang Yaosheng Zhang Yimin Jiang Lei Xia School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013China

The formation of controllable size and dripping frequency in electrohydrodynamic(EHD)atomization with electric periodic dripping regime are of much interest and importance because of significant and wide applications,such as micro-encapsulation and *** the present study,the experimental and theoretical works were carried out to explore droplet formation in periodic dripping regime in presence of an electric *** dimensionless electric charge carried by each droplet produced is smaller than the 50%of critical value of the Rayleigh limit,where charge-to-mass ratio of droplets was obtained through the deflection distance in the presence of an electric *** droplet in electric periodic dripping regime usually undergoes oscillating deformation,and finally forms a spherical droplet below the tip no more than ten times out diameter of *** droplet size tens of microns to one hundreds of microns decreases with an increase in applied *** the electric dripping mode,droplets size is independent of flow rate and affected by flow rate due to adsorption of surface active species in *** simplified model to predict droplets size was derived from the balance of electric,surface tension and gravity *** droplets size calculated in good agreement with the ***,the dripping frequency of droplets with rang of a few to several hundred hertz obtained from timeresolved images is highly dependent of liquid flow rate and electric *** largest dripping frequency was predicted and in reasonable agreement with the experimental *** electric periodic dripping regime drop-on-demand droplets in size and dripping frequency further our understanding on the formation of identical droplets and are beneficial to many practical applications.

关键词： Electric field Electric periodic dripping Formation Diameter Dripping frequency

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Machine learning assisted derivation of minimal low-energy models for metallic magnets

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npj Computational Materials 2023年第1期9卷 353-364页

作者： Vikram Sharma zhentao wang Cristian D.Batista Department of Physics and Astronomy The University of TennesseeKnoxvilleTN 37996USA School of Physics and Astronomy University of MinnesotaMinneapolisMN 55455USA Quantum Condensed Matter Division and Shull-Wollan Center Oak Ridge National LaboratoryOak RidgeTN 37831USA Present address:Center for Correlated Matter and School of Physics Zhejiang UniversityHangzhou 310058China

We consider the problem of extracting a low-energy spin Hamiltonian from a triangular Kondo Lattice Model(KLM).The non-analytic dependence of the effective spin-spin interactions on the Kondo exchange excludes the use of perturbation theory beyond the second *** then introduce a Machine Learning(ML)assisted protocol to extract effective two-and four-spin *** resulting spin model reproduces the phase diagram of the original KLM as a function of magnetic field and single-ion anisotropy and reveals the effective four-spin interactions that stabilize the field-induced skyrmion crystal ***,this model enables the computation of static and dynamical properties with a much lower numerical cost relative to the original KLM.A comparison of the dynamical spin structure factor in the fully polarized phase computed with both models reveals a good agreement for the magnon dispersion even though this information was not included in the training data set.

关键词： Kondo dynamical derivation

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Visualization on electrified micro-jet instability from Taylor cone in electrohydrodynamic atomization

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Chinese Journal of Chemical Engineering 2022年第4期35卷 456-465页

作者： Shiqi Yang zhentao wang Qian Kong Bin Li Junfeng wang School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013China

The cone-jet in electrohydrodynamic atomization has been widely applied into numerous industrial fields owing to micro-sized drops with narrow distribution and high *** electrified jet emits from a single capillary sheathed with quartz tube is visualized versus operating parameters and physical properties,and breakup instabilities are also *** range of operating parameters for a steady conejet broadens,as well as the minimum flow *** cone angle decreases with an increase in flow rate,while increases as electric potential *** jet breakup length decreases with an increase in flow rate and conductivity,while increases as electric potential *** diffusion angle increases as flow rate increasing,while decrease as electric potential and conductivity *** clearer whipping instabilities are observed with an increase in“electro-Weber”number and *** completion in disturbance or/and suppression from axial and radial stresses,drag force dominates the ***,for a large flow rate,the transition from varicose instabilities to whipping instabilities is *** whipping instabilities are clearly observed for high conductivity due to much more free ions in *** much higher conductivity,an intermittent electrified jet appears and shows an umbrella plume,and breakup length sharply shortens.

关键词： EHDA Cone-jet regime Electrified jet Conductivity instability

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Thermally removable in-situ formed ZnO template for synthesis of hierarchically porous N-doped carbon nanofibers for enhanced electrocatalysis

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Nano Research 2016年第8期9卷 2270-2283页

作者： Shuguang wang zhentao Cui Jinwen Qin Minhua Cao Key Laboratory of Cluster Science Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic ConversionMaterials Department of Chemistry Beijing Institute of Technology Beijing 100081 China

Rational design and simple synthesis of one-dimensional nanofibers with high specific surface areas and hierarchically porous structures are still challenging. In the present work, a novel strategy utilizing a thermally removable template was developed to synthesize hierarchically porous N-doped carbon nanofibers （HP-NCNFs） through the use of simple electrospinning technology coupled with subsequent pyrolysis. During the pyrolysis process, ZnO nanoparticles can be formed in situ and act as a thermally removable template due to their decomposition and sublimation under high-temperature conditions. The resulting HP-NCNFs have lengths of up to hundreds of micrometers with an average diameter of 300 nm and possess a hierarchically porous structure throughout. Such unique structures endow HP-NCNFs with a high specific surface area of up to 829.5 m2-g 1, which is 2.6 times higher than that （323.2 m2.g 1） of conventional N-doped carbon nanofibers （NCNFs）. Compared with conventional NCNFs, the HP-NCNF catalyst exhibited greatly enhanced catalytic performance and improved kinetics for the oxygen reduction reaction （ORR） in alkaline media. Moreover, the HP-NCNFs even showed better stability and stronger methanol crossover effect tolerance than the commerdal Pt-C catalyst. The optimized ORR performance can be attributed to the synergetic contribution of continuous and three-dimensional （3D） cross-linked structures, graphene-like structure on the edge of the HP- NCNFs, high specific surface area, and a hierarchically porous structure.

关键词： zinc oxide hierarchically porousstructure thermally removable formed in situ oxygen reduction reaction

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Pollutant concentrations and pollution loads in stormwater runoff from different land uses in Chongqing

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Journal of Environmental Sciences 2013年第3期25卷 502-510页

作者： Shumin wang Qiang He Hainan Ai zhentao wang Qianqian Zhang Key Laboratory of Eco-Environment of Three Gorges Region of Ministry of Education Chongqing University Key Laboratory of Water Environmental Restoration Chongqing University of Arts and Science Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

To investigate the distribution of pollutant concentrations and pollution loads in stormwater runoff in Chongqing,six typical land use types were selected and studied from August 2009 to September *** analysis on the distribution of pollutant concentrations in all water samples shows that pollutant concentrations fluctuate greatly in rainfall-runoff,and the concentrations of the same pollutant also vary greatly in different rainfall *** addition,it indicates that the event mean concentrations （EMCs） of total suspended solids （TSS） and chemical oxygen demand （COD） from urban traffic roads （UTR） are significantly higher than those from residential roads （RR）,commercial areas （CA）,concrete roofs （CR）,tile roofs （TRoof）,and campus catchment areas （CCA）;and the EMCs of total phosphorus （TP） and NH3-N from UTR and CA are 2.35-5 and 3 times of the class-III standard values specified in the Environmental Quality Standards for Surface Water （GB 3838-2002）.The EMCs of Fe,Pb and Cd are also much higher than the class-III standard *** analysis of pollution load producing coefficients （PLPC） reveals that the main pollution source of TSS,COD and TP is *** analysis of correlations between rainfall factors and EMCs/PLPC indicates that rainfall duration is correlated with EMCs/PLPC of TSS for TRoof and TP for UTR,while rainfall intensity is correlated with EMCs/PLPC of TP for both CR and *** results of this study provide a reference for better management of non-point source pollution in urban regions.

关键词： urban land uses stormwater runoff pollution load pollutant concentration distribution

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Luminescence properties of rare earth complexes bonded to novel mesoporous spherical hybrid materials

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Journal of Rare Earths 2023年第1期41卷 60-66页

作者： Lin Huang Juan wang Haipeng Zhang Guannan Zu zhentao wang Yonghong Fu Shaanxi Key Laboratory of Nanomaterials and Nanotechnology Xi'an University of Architecture and TechnologyXi'an 710055China

YVO_(4):Eu^(3+) phosphors have been widely used in optoelectronic integration fields of its chemical and thermal ***,the excitation spectrum band of VO_(4)^(3-) is too narrow for high-efficiency luminescence,restricting its further ***,flower-like and linear-like YVO_(4):Eu^(3+) hollow mesoporous spheres were synthesized and connected with Eu organic ligand,to obtain a new hybrid luminescent *** characterization shows that the pores of microspheres are in size of about 2-50 nm,sticked with regular morphology,well crystallized,and in uniform *** emission intensity of hybrid luminescent material is higher than that of single YVO_(4):Eu^(3+) and single Eu co mplexes realizing the purpose of mutually reinforcing luminesce *** paper provides a new idea to connect rare earth complexes for a new non-silicon-based mesoporous spherical matrix.

关键词： YVO_(4):Eu^(3+) Mesoporous spheres Hybrid material Luminescence Rare earths

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Characterization and Identification of NPK Stress in Rice Using Terrestrial Hyperspectral Images

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Plant Phenomics 2024年第3期6卷 638-654页

作者： Jinfeng wang Yuhang Chu Guoqing Chen Minyi Zhao Jizhuang Wu Ritao Qu zhentao wang College of Engineering Northeast Agricultural UniversityHarbin 150000China Yantai Agricultural Technology Popularization Center Yantai 261400China College of Life Sciences Northwest A&F UniversityYangling 712100China

Due to nutrient stress,which is an important constraint to the development of the global agricultural sector,it is now vital to timely evaluate plant *** sensing technology,especially hyperspectral imaging technology,has evolved from spectral response modes to pattern recognition and vegetation *** study established a hyperspectral library of 14 NPK(nitrogen,phosphorus,potassium)nutrient stress conditions in *** terrestrial hyperspectral camera(SPECIM-IQ)collected 420 rice stress images and extracted as well as analyzed representative spectral reflectance curves under 14 stress *** canopy spectral profile characteristics,vegetation index,and principal component analysis demonstrated the differences in rice under different nutrient stresses.A transformer-based deep learning network SHCFTT(SuperPCA-HybridSN-CBAM-Feature tokenization transformer)was established for identifying nutrient stress patterns from hyperspectral images while being compared with classic support vector machines,1D-CNN(1D-Convolutional Neural Network),and *** total accuracy of the SHCFTT model under different modeling strategies and different years ranged from 93.92%to 100%,indicating the positive effect of the proposed method on improving the accuracy of identifying nutrient stress in rice.

关键词： identification stress rice character hyperspectral images terrestrial using

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Study of Seismic P Wave in Mesoscale Fracture-Induced Arbitrary Anisotropic Media

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Journal of Earth Science 2024年第2期35卷 717-721页

作者： Han Xiao Xinmin Shang zhentao wang Xiping wang Geophysical Research Institute SINOPEC Shengli Oilfield CompanyShandong 257022China Working Station for Postdoctoral Scientific Research Shengli OilfieldShandong 257000China

Mesoscale fracture controls the permeability of shale res ervoirs,it is one of the main research objectives of natural frac *** length of the mesoscale fracture is less than 1/4 of the seismic eigen wavelength and greater than 1%of the seis mic eigen wavelength,they cannot be identified in actual seis mic data and are usually displayed by the azimuthal anisotropy of seismic *** this paper,we propose a calculation process from fracture properties to seismic P-wave velocity and traveltime in anisotropic media induced by multiple sets of arbitrary occurring mesoscale *** on this process,the variations of the media’s Anisotropic(A-)parameters with fracture properties are ***,variation of P-wave NMO elliptical principle axis with the relative fracture density is studied according to the arbitrary anisotropic theory based on A-parameters.

关键词： seismic mesoscale shale

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