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  1. 8981

    Differential equations and recursive solutions for cosmological amplitudes by Song He, Xuhang Jiang, Jiahao Liu, Qinglin Yang, Yao-Qi Zhang

    Published 2025-01-01
    “…In this note, we revisit the computation of these “cosmological amplitudes” associated with any tree or loop graph for conformal scalars with time-dependent interactions in the power-law FRW universe, directly in terms of iterated time integrals. …”
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  2. 8982

    Study on Impact Tendency of Coal and Rock Mass Based on Different Stress Paths by Chengliang Zhang, Danyong Ye, Ping Yang, Shunchuan Wu, Chao Wang

    Published 2020-01-01
    “…Laboratory tests and numerical tests were used to study the impact tendency of coal and roof strata, including the deformation characteristics, failure characteristics, and bending energy index of the coal and rock mass of different sizes, the failure law and energy evolution characteristics of tlhe coal and rock mass under the same size, and the unloading characteristics of the coal and rock mass under the same size and different confining pressures. …”
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  3. 8983
  4. 8984

    Study on cracking mechanism and key parameters of roof in gob-side entry retaining by pre-split blasting roof in deep mine by Xiao Liu, Xueqiu He, Yuntao Liang, Xinzhu Hua, Chen Li

    Published 2025-01-01
    “…The key parameters of pre-splitting cracks are the hole spacing and charge length. The crack propagation law of two holes blasting at the same time with different blasting methods, different linear charge density, and different hole spacing is studied. …”
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  5. 8985

    Mathematical Model and Numerical Simulation of Coalbed Methane Migration Considering the Adsorption Expansion Effect by Jianlin Xie, Shaoqiang Yang, Pengwei Li

    Published 2022-01-01
    “…At the same time, coal volume strain changes with coal gas content in accordance with exponential law ε = ε0(eϒc-1). Based on the experimental results, considering the coupling effects of heat transfer, water seepage, coal and rock mass deformation, and coalbed methane desorption and seepage, a mathematical model of heat transfer–deformation–seepage coupling coalbed methane migration was established, and a numerical simulation study was carried out on the heat injection-enhanced coalbed methane mining project. …”
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  6. 8986
  7. 8987
  8. 8988

    The Time-Varying Variation Characteristics of Methane during Nitrogen Injection Process: An Experimental Study on Bituminous Coals by Aoxiang Zhang, Longyong Shu, Zhonggang Huo, Xin Song

    Published 2023-01-01
    “…Given the above problems, the experiment system was used to study the gas migration evolution law and time-varying characteristics of CH4 displacement by N2 in coal under different injection pressures. …”
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  9. 8989
  10. 8990

    ν-point energy correletors with FastEEC: Small-x physics from LHC jets by Ankita Budhraja, Hao Chen, Wouter J. Waalewijn

    Published 2025-02-01
    “…We have implemented this in an update to FastEEC and conducted an initial study of power-law scaling in the perturbative regime as a function of ν, using CMS Open Data on jets. …”
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    Article
  11. 8991

    Global support at the click of a button: How digital remittances help Ukraine during crises by Yevheniia Polishchuk, Yana Valko, Olena Shuplat, Yurii Vasylyshen

    Published 2025-01-01
    “…The data were taken from the open sources of the National Bank of Ukraine, Statista, the European Commission, Migration Data Portal, World Bank, and CoinLaw. The results showed that the share of informal remittance channels, although present, tends to decrease compared with the official ones. …”
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  12. 8992
  13. 8993

    Cosmic rays escape from their sources by A. Marcowith

    Published 2025-01-01
    “…Fermi acceleration mechanisms built a power-law distribution controlled by the ratio of the acceleration to escape timescales in the acceleration site. …”
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  14. 8994

    Energy-space random walk in a driven disordered Bose gas by Zhang, Yansheng, Martirosyan, Gevorg, Ho, Christopher Junhong, Etrych, Jiří, Eigen, Christoph, Hadzibabic, Zoran

    Published 2024-02-01
    “…Motivated by the experimental observation [1] that driving a non-interacting Bose gas in a 3D box with weak disorder leads to power-law energy growth, $E \propto t^{\eta }$ with $\eta =0.46(2)$, and compressed-exponential momentum distributions that show dynamic scaling, we perform systematic numerical and analytical studies of this system. …”
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  15. 8995

    Analysis of the Outer Contour Characteristics of Roadway Forming under the Influence of Cutting Head Vibration by Zhixiang Liu, Shuai Wang, Miao Xie, Chunxue Xie

    Published 2021-01-01
    “…Considering that the trajectory of the cutting head of the longitudinal axis roadheader directly affects the surface morphology of the roadway, the formation mechanism of the outer profile of the roadway obtained by the cutting head is analyzed, and the dynamic model of the cutting part was constructed. The variation law of the vibration swing angle of the cutting head under different working conditions was obtained, and the coordinate of the cutting head of the roadheader in the roadway space coordinate system was determined by using the robot kinematics analysis method. …”
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  16. 8996

    Prediction of the critical stress to crack initiation associated to the investigation of fatigue small crack by D. Marhabi, N. Benseddiq, G. Mesmacque, Z. Azari, J.M. Nianga

    Published 2016-10-01
    “…Small crack and critical stress are illustrated here in as resulting from pure bending approach expressed by Bazant law [7]. It’s reproduces well the Kitagawa diagram [6] (Fig. 3). …”
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  17. 8997

    Experimental Study on the Fractal Features and Permeability Characteristics of Low Metamorphic Coal Pore Structure under Thermal Damage by Zhen Liu, Mingrui Zhang, Shijian Yu, Lin Xin, Gang Wang, Liutao Sun

    Published 2020-01-01
    “…Underground coal gasification and exploitation of geothermal mine resources can effectively improve coal conversion and utilization efficiency, and the basic theory of the above technologies generally relies on the change law of the coal pore structure under thermal damage. …”
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