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  1. 621

    Use of hazardous barium slag as a supplementary cementitious material in calcium aluminate cement: Evolution of engineering properties and microstructure by Chen-xi Dong, Zhao Duan, Jiang-shan Li, Xin Chen, Wei Zhang, Haitao Cao, Nianqin Wang

    Published 2025-07-01
    “…In this study, incorporating BS at a replacement ratio of up to 20 % improved the fluidity of a CAC slurry by 16 % and increased its 3-d and 90-d unconfined compressive strengths by 2.5 % and 42 %, respectively, compared to pure CAC. …”
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  2. 622

    Critical technologies and geology-engineering integration practices for deep CBM production in the Yanchuannan CBM field by Zhenlong CHEN, Yunhai WANG, Xiao LIU, Bin CUI, Song YANG, Xin LI, Qilong FANG

    Published 2025-01-01
    “…Based on these achievements, the average cycle for acquiring gas shows was shortened from 240 d to 30 d, and the single-well production was significantly enhanced, with the daily gas production of directional and horizontal wells reaching 2.0×104 m3 and 6.5×104 m3, respectively. …”
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  18. 638

    Three-dimensional omnidirectional characterization methods of rock anisotropic wave velocity and acoustic emission location optimization by Shengjun MIAO, Wenxuan YU, Mingchun LIANG, Pengjin YANG, Conghao LI, Zejing LIU

    Published 2025-03-01
    “…In the damage stage, the horizontal, oblique longitudinal and average wave velocities decrease rapidly, signifying that the fractures have propagated. A 3D ellipsoid characterization method for rock anisotropic wave velocity using the Rodrigues matrix is proposed in accordance with the characteristics of rock wave velocity evolution in different directions. …”
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  19. 639

    PENERAPAN MODEL PROJECT BASED LEARNING UNTUK MENINGKATKAN LITERASI SAINS MAHASISWA PENDIDIKAN IPA by Indra Sakti, nirwana nirwana, Eko Swistoro

    Published 2021-04-01
    “…At the planning stage, several activities were carried out as the initial product design, namely: (1) developing learning tools, namely (a) RPP (b) teaching materials (c) LKPD (d) Scientific Literacy test instruments. (2) Expert validation (content validity) of learning tools. …”
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