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Durability and microstructure analysis of the road base material prepared from red mud and flue gas desulfurization fly ash

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International Journal of Minerals,Metallurgy and Materials 2020年第4期27卷 555-568页

作者： Emile Mukiza ling-ling Zhang Xiao-ming Liu School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China

The present study aimed to investigate the durability and microstructure evolution of road base materials(RBM)prepared from red mud and flue gas desulfurization fly *** durability testing showed that the strength of RBM with the blast furnace slag addition of 1wt%,3wt%and 5wt%reached 3.81,4.87,and 5.84 MPa after 5 freezing–thawing(F–T)cycles and reached 5.21,5.75,and 6.98 MPa after 20 weting–drying(W–D)cycles,*** results also indicated that hydration products were continuously formed even during W–D and F–T exposures,resulting in an increase of the strength and durability of *** observed increase of macropores(>1μm)after F–T and W–D exposures suggested that the mechanism of RBM deterioration is pore enlargement due to cracks that develop inside their ***,the F–T exposure showed a greater negative effect on the durability of RBM compared to the W–D *** leaching tests showed that sodium and heavy metals were solidified below the minimum requirement,which indicates that these wastes are suitable for use as a natural material replacement in road base construction.

关键词： red mud road base material durability microstructure damage mechanism

Research of ERP model system of spatial data warehouse

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重庆邮电学院学报（自然科学版） 2004年第5期16卷 84-88页

作者： CHENXue-long wangyan-zhang DUT InstituteofInformationandDecisionTechnologyDalian116023P.R.China

The broad sharing of spatial information is demanded in the infrastructure construction of spatial data in our country. And the spatial data warehouse realizes the effective management and sharing of spatial information serving as an efficient tool. This article proposes ERP model system that of general decision oriented for constructing spatial data warehouse from the aspect of decision application. In the end of article, the construction process of spatial data warehouse based on ERP model system is discussed.

关键词：空间数据仓库 ERP 模型系统空间数据模型 GIS

Some Results on Cohomology of Twisted Smash Coproduct

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Acta Mathematica Sinica,English Series 2022年第8期38卷 1484-1492页

作者： ling JIA Department of Mathematics and Statistics Ludong UniversityYantai 264025P.R.China

With the main motivation to present some alternatives to the cosemisimplicity of twisted Smash coproduct,this paper first gives some basic constructions which make sense to consider the derived functors of some left exact functors from the category of comodules to vector ***,the Hochschild–Serre spectral sequence for twisted Smash coproduct coalgebras is obtained,which extends some results on homological properties given in the category of comodules over Smash coproduct in the literature.

关键词： Twisted Smash coproduct bicomodule coalgebra Hopf algebra spectral sequence

Microbial control of the carbon cycle in the ocean

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National Science Review 2018年第2期5卷 287-291页

作者： ling Wang The organization is unknown

The oceans cover 71%of the area of our planet and serve as a major repository for anthropogenic *** amount of dissolved organic carbon(DOC)in the ocean is comparable to the amount of CO2 in the *** all this DOC were to be respired,it would double the CO2 level in the atmosphere and result in catastrophic *** the past few decades,scientists have increasingly begun to understand the vital role that

关键词： Carbon dioxide

Layering of subcontinental lithospheric mantle

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Science Bulletin 2017年第14期62卷 1030-1034页

作者： ling Chen State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences CAS Center for Excellence in Tibetan Plateau Earth Sciences University of Chinese Academy of Sciences

Recent seismic studies reveal a sharp velocity drop mostly at^70–100 km depth within the thick mantle keel beneath cratons, termed the mid-lithosphere discontinuity(MLD). The common presence of the MLD in cratonic regions indicates structural and property layering of the subcontinental lithospheric mantle(SCLM). The nature and origin of the MLD, and many issues associated with the layering of the SCLM are essential to understand the formation and evolution of continents, and have become frontier subjects in the Earth sciences.

关键词： Mid-lithosphere discontinuity Lithosphere-asthenosphere boundary Subcontinental lithospheric mantle Formation and evolution of continents

A novel ternary JK flip-flop using the resonant tunneling diode literal circuit

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Journal of Zhejiang University-Science C(Computers and Electronics) 2012年第12期13卷 944-950页

作者： Mi LIN ling-ling SUN School of Electronics and Information Hangzhou Dianzi University Hangzhou 310018 China

A literal circuit with a three-track-output structure is presented based on resonant tunneling diodes(RTDs).It can be transformed conveniently into a single-track-output structure according to the definition and properties of the literal operation.A ternary resonant tunneling JK flip-flop is created based on the RTD literal circuit and the module-3 operation,and the JK flip-flop also has two optional types of output *** design of the ternary RTD JK flip-flop is verified by *** RTD literal circuit is the key design component for achieving various types of multi-valued logic(MVL) *** can be converted into ternary D and JK flip-flops,and the ternary JK flip-flop can also be converted simply and conveniently into ternary D and ternary T flip-flops when the input signals satisfy certain logical *** these types of flip-flops can be realized using the traditional Karnaugh maps combined with the literal and module-3 *** approach offers a novel design method for MVL resonant tunneling flip-flop circuits.

关键词： Resonant tunneling diode(RTD) Ternary logic Literal circuit Module-3 operation JK flip-flop

Contour reconstruction of three-dimensional spiral CT damage image

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Journal of Innovative Optical Health Sciences 2018年第5期11卷 42-50页

作者： Cui ling-ling Zhang Hui The First Affiliated Hospital of Jinzhou Medical University Jinzhou 121001 P.R.China

In order to improve the diagnosis and analysis ability of 3D spiral CT and to reconstruct the contour of 3D spiral CT damage image,a contour reconstruction method based on sharpening template enhancement for 3D spiral CT damage image is *** method uses the active contour LasSO model to extract the contour feature of the 3D spiral CT damage image and enhances the information by sharpening the template *** technique and makes the noise separation of the 3D spiral CT damage *** spiral CT image was procesed with ENT,and the statistical shape model of 3D spiral CT damage image was *** algorithm is used to decompose the feature to realize the analysis and reconstruction of the contour feature of the 3D spiral CT damage image,so as to improve the adaptive feature matching ability and the ability to locate the abnormal feature *** simulation results show that in the 3D spiral CT damage image contour reconstruction,the proposed method performs well in the feature matching of the output pixels,shortens the contour reconstruction time by 20/ms,and provides a strong ability to express the image *** normalized reconstruction error of CES is 30%,which improves the recognition ability of 3D spiral CT damage image,and increases the signal-to noise ratio of peak output by 40 dB over other methods.

关键词： Spiral CT three dimensional image contour feature extraction sharpening template en hancement

Grbner-Shirshov Basis and the Minimal Projective Resolution of U_q^+(G_2)

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Acta Mathematica Sinica,English Series 2016年第2期32卷 213-226页

作者： ling ling MAO Abdukadir OBUL College of Mathematics and System Sciences Xinjiang UniversityUrumqi 830046P.R.Chin

Abstract In this paper, by using the Anick＇s resolution and Grobner-Shirshov basis for quantized enveloping algebra of type G2, we compute the minimal projective resolution of the trivial module of Uq＋（G2） and as... 详细信息

关键词： Anick resolution minimal projective resolution Grobner-Shirshov basis

Study on threshold segmentation of multi-resolution 3D human brain CT image

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Journal of Innovative Optical Health Sciences 2018年第6期11卷 78-86页

作者： ling-ling Cui Hui Zhang The First Hospital A±liated to Jinzhou Medical University Jinzhou 121001 P.R.China

In order to effectively improve the pathological diagnosis capability and feature resolution of 3D human brain CT images,a threshold segmentation method of multi-resolution 3D human brain CT image based on edge pixel grayscale feature decomposition is proposed in this *** this method,first,original 3D human brain image information is collected,and CT image filtering is performed to the collected information through the gradient value decomposition method,and edge contour features of the 3D human brain CT image are ***,the threshold segmentation method is adopted to segment the regional pixel feature block of the 3D human brain CT image to segment the image into block vectors with high-resolution feature points,and the 3D human brain CT image is reconstructed with the salient feature point as *** results show that the method proposed in this paper can provide accuracy up to 100%when the signal-to-noise ratio is 0,and with the increase of signal-to-noise ratio,the accuracy provided by this method is stable at 100%.Comparison results show that the threshold segmentation method of multi-resolution 3D human brain CT image based on edge pixel grayscale feature decomposition is signicantly better than traditional methods in pathological feature estimation accuracy,and it effectively improves the rapid pathological diagnosis and positioning recognition abilities to CT images.

关键词： Multi-resolution 3D human brain CT image segmentation feature extraction recognition