Showing 4,241 - 4,260 results of 18,314 for search 'significantly ((((((a decrease) OR (largest decrease))) OR (mean decrease))) OR (teer decrease))', query time: 0.74s Refine Results
  1. 4241

    The amplitude curve. by Ruocheng Zhang (20442445)

    Published 2024
    “…As the ultrasonic vibration frequency (20–40kHz) increases, the mechanical specific energy (MSE) initially decreases and then increases. The MSE reaches a minimum value at a frequency of 20–25 kHz, representing a decrease of 15.52%–22.24% compared with conventional rock breaking, which can significantly improve the rock breaking efficiency and reduce the drilling cost. …”
  2. 4242

    The stress-strain curve in rock failure process. by Ruocheng Zhang (20442445)

    Published 2024
    “…As the ultrasonic vibration frequency (20–40kHz) increases, the mechanical specific energy (MSE) initially decreases and then increases. The MSE reaches a minimum value at a frequency of 20–25 kHz, representing a decrease of 15.52%–22.24% compared with conventional rock breaking, which can significantly improve the rock breaking efficiency and reduce the drilling cost. …”
  3. 4243

    Finite element modeling of PDC cutter with rock. by Ruocheng Zhang (20442445)

    Published 2024
    “…As the ultrasonic vibration frequency (20–40kHz) increases, the mechanical specific energy (MSE) initially decreases and then increases. The MSE reaches a minimum value at a frequency of 20–25 kHz, representing a decrease of 15.52%–22.24% compared with conventional rock breaking, which can significantly improve the rock breaking efficiency and reduce the drilling cost. …”
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  5. 4245

    The relationship between HBV antigens deposition in kidneys and renal prognosis in IgA nephropathy patients infected with HBV by Yun Guo (135103)

    Published 2024
    “…The primary outcome was a composite of 30% decrease in eGFR from the baseline, kidney failure and all-cause mortality. …”
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  20. 4260

    Table 1_Trends and projections of Hepatitis A incidence in eastern China from 2007 to 2021: an age-period-cohort analysis.docx by Hui Peng (116756)

    Published 2024
    “…</p>Conclusion<p>The incidence of Hepatitis A in Jiangsu Province has significantly decreased from 2007 to 2021, primarily due to public health measures and vaccination programs. …”