Miaoyue Wang

Chinese Academy of Sciences

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Qingyun Di

Chinese Academy of Sciences

Ruo Wang

Fuzhou University

Changmin Fu

Chinese Academy of Sciences

Ruo Wang

Chinese Academy of Sciences

Meigen Zhang

Chinese Academy of Sciences

Zhiguo An

Chinese Academy of Sciences

Diquan Li

Central South University

Da Lei

University of Chinese Academy of Sciences

Guangjie Wang

Soochow University

Lili Shu

Shenyang Agricultural University

Cooperative Institutions

Chinese Academy of Sciences

Institute of Geology and Geophysics

University of Chinese Academy of Sciences

Ministry of Education of the People's Republic of China

Shenyang Agricultural University

Peking University

Sun Yat-sen University

Central South University

Zhejiang University

Northwest A&F University

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Transcriptome Analysis Revealed the Mechanism of Inhibition of Saprophytic Growth of Sparassis latifolia by Excessive Oxalic Acid

Cells (2022)

Zhiheng Qiu Xinyi Wang Shuang Wang Nuo Cai Jing Huang

Sparassis latifolia, a highly valued edible fungus, is a crucial medicinal and food resource owing to its rich active ingredients and pharmacological effects. Excessive oxalic acid secreted on a pine-sawdust-dominated substrate inhibits its mycelial growth, and severely restricts the wider development of its cultivation. However, the mechanism underlying the relationship between oxalic acid and slow mycelial growth remains unclear. The present study reported the transcriptome-based response of S. latifolia induced by different oxalic acid concentrations. In total, 9206 differentially expressed genes were identified through comparisons of three groups; 4587 genes were down-regulated and 5109 were up-regulated. Transcriptome analysis revealed that excessive oxalic acid mainly down-regulates the expression of genes related to carbohydrate utilization pathways, energy metabolism, amino acid metabolism, protein synthesis metabolism, glycan biosynthesis, and signal transduction pathways. Moreover, genes encoding for wood-degrading enzymes were predominantly down-regulated in the mycelia treated with excessive oxalic acid. Taken together, the study results provide a speculative mechanism underlying the inhibition of saprophytic growth by excessive oxalic acid and a foundation for further research on the growth of S. latifolia mycelia.

Oxalic Acid

10.3390/cells11223636

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Prospecting possibility with electric method for thin water-bearing rock layer upper the coal layers

Progress in geophysics (2003)

Miaoyue Wang

One always worries about the thin water-bearing rock layer upper on the coal layers, because this thin earth layer can cause the water disaster to the coal mineral. The paper introduces theoretically that electric method can prospect the water-bearing earth layer upper on the coal layers, and then shows the CSAMT forward modeling results for a fault thin water-bearing model that are produced by finite element method, it tells us: the response for the thin water-bearing which is on a certain depth is very clear on CSAMT profiles, even the thin layer is about 20 meters. The theoretical and forward modeling results both show that it is possible to prospect the thin water-bearing earth layer with electric methods.

Thin layers

Prospecting

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Determining areas of leakage in the Da Ye Dam using multi-electrode resistivity

Bulletin of Engineering Geology and the Environment (2009)

Qingyun Di Miaoyue Wang

Bedrock

Leakage (economics)

Electrical Resistivity Tomography

Marl

10.1007/s10064-009-0222-1

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Citations (28)

TIME-DOMAIN FINITE-ELEMENT WAVE FORM INVERSION OF ACOUSTIC WAVE EQUATION

Journal of Computational Acoustics (2004)

Qingyun Di Meigen Zhang Miaoyue Wang

The paper derives the finite element equation for acoustic wave in time domain and presents a transparent-plus-attenuation boundary condition. Forward modeling demonstrates that the boundary condition absorbs boundary reflection wave very well. On these bases, we derive the equation satisfied by elements of Jacobi matrix used in the inversion of the physical property parameters of acoustic media. In fact, the equation is the same as that of forward modeling in form. Only the right force item is different. So with the same method of forward modeling, we can get the elements of Jacobi matrix. Because the elements are variable with time and the present inversion does not permit too many unknowns. We integrate the finite elements with the same physical property as one unknown structure unit (for example, a horizontal layer or an oblique layer, etc.) and inverse the physical property parameters of these unknown structure units instead all element's unknown parameters. The method greatly reduces calculation time and saves computer memory. Also, it improves the accuracy of the inversion results and improves the stability of the solving process. The inversion equations are solved with QR decomposition method. Model results prove that the full wave equation inversion method in time domain is effective.

Acoustic wave equation

10.1142/s0218396x04002341

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The contrast of response characteristics between large power long bipole and circle current source

Cheng Xu Qingyun Di Miaoyue Wang

For electromagnetic (EM) fields exited by dozens of kilometers long bipole or large diameter circle current sources, the effect on EM field by ionosphere cannot be ignored. In this case, we call it "earth‐ionosphere" model which includes ionosphere, atmosphere and earth media. In order to discuss the EM field with these two sources, we modeled the frequency responses and attenuation characteristics of EM fields for three layers earth‐ionosphere and half‐space model. The results show that for the long bipole source the ionosphere has an enhancement effect on the fields, and the fields in the earth‐ionosphere model decay slower than half‐space with given frequency. However, we draw an inverse conclusion for the circle current source.

10.1190/1.3659105

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A simulation system of seismogeny, occurrence and development of earthquakes

Acta Seismologica Sinica (1999)

Miaoyue Wang Meigen Zhang Qingyun Di Jing Chen Ling Zhu

Graphical display

10.1007/s11589-999-0009-2

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An application of CSAMT for detecting weak geological structures near the deeply buried long tunnel of the Shijiazhuang-Taiyuan passenger railway line in the Taihang Mountains

Engineering Geology (2020)

Qingyun Di Changmin Fu Zhiguo An Ruo Wang Guangjie Wang

Lithology

Electrical Resistivity Tomography

Magnetotellurics

10.1016/j.enggeo.2020.105517

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Citations (25)

Pre-stack full wavefield inversion for elastic parameters of TI media

Journal of Geophysics and Engineering (2006)

Meigen Zhang Zhongyu Huang Xiaofan Li Miaoyue Wang Xu Guangyin

Pre-stack full wavefield inversion for the elastic parameters of transversely isotropical media is implemented. The Jacobian matrix is derived directly with the finite element method, just like the full wavefield forward modelling. An absorbing boundary scheme combining Liao's transparent boundary condition with Sarma's attenuation boundary condition is applied to the forward modelling and Jacobian calculation. The input data are the complete ground-recorded wavefields containing full kinematic and dynamic information for the seismic waves. Inversion with such data is desirable as it should improve the accuracy of the estimated parameters and also reduce data pre-processing, such as wavefield identification and separation. A scheme called energy grading inversion is presented to deal with the instability caused by the large energy difference between different arrivals in the input data. With this method, parameters in the shallow areas, which mainly affect wave patterns with strong energy, converge before those of deeper media. Thus, the number of unknowns in each inversion step is reduced, and the stability and reliability of the inversion process is greatly improved. As a result, the scheme is helpful to reduce the non-uniqueness in the inversion. Two synthetic examples show that the inversion system is reliable and accurate even though initial models deviate significantly from the actual models. Also, the system can accurately invert for transversely isotropic model parameters even with the introduction of strong random noise.

Transverse isotropy

10.1088/1742-2132/3/1/010

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Insight into skywave theory and breakthrough applications in resource exploration

National Science Review (2021)

Qingyun Di Changmin Fu Guoqiang Xue Miaoyue Wang Zhiguo An

Skywave refers to the electromagnetic wave reflected or refracted from the ionosphere and propagated in the form of a guided wave between the ionosphere and the Earth's surface. Since the skywave can propagate over large distances, it has been widely used in long-distance communication. This paper explores and demonstrates the feasibility of skywave for deep resource and energy exploration at depths of up to 10 km. Theoretical and technical advancements were accomplished in furthering skywave applications. A new solution method based on Green's function has been developed to study skywave propagation in a fully coupled lithosphere-air-ionosphere full space model. For the first time, the model allows one to study skywave distribution characteristics in the lithosphere containing inhomogeneity such as ore deposits or oil and gas reservoirs. This model also lays a foundation for skywave data processing and interpretation. On a parallel line, we have developed a multi-channel, broadband, low-noise, portable data acquisition system suitable for receiving skywave signals. Using the skywave field excited by a high-power fixed source located in central China, actual field surveys have been carried out in some areas in China including the Biyang depression of Henan Province. The initial results appear encouraging-the interpreted resistivity models prove to be consistent with those of seismic exploration and known geological information, and the exploration cost is only ∼1/4 to 1/10 that of seismic surveys. These initial successful applications of the skywave theory lay a solid foundation for further verification of the new method.

Skywave

Schumann resonances

10.1093/nsr/nwab046

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Citations (7)

2D TM DATA INTEGRATED INVERSION

Progress in geophysics (2001)

Ruo Wang Miaoyue Wang Di Qing yun

Form first and second of Maxwell's equations and after uariable substitution, the TM problem become lenear. A inversion equations are obtained which integrate the different surface points and different frequencys influences with variable of small conductivity varcation. We use Gauss Seidel iteration method to solve the above inversion equations and the integrated invesion are realized. Because the integrated inversion method are used we over came the disadvantages in ousing 1D inversion method to sbstitute 2D inversion method. A series of model tests are given in the paper which includes the different noises and different initial models.

Inverse transform sampling

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