Results 31 to 40 of about 1,873,571 (345)
Using a high-pressure water jet-assisted tunnel boring machine to break rock
Advances in Mechanical Engineering, 2020 The concept of tunnel boring machine (TBM) disc cutter rock breaking coupled with high-pressure water jets has been proposed to overcome the difficulties that occur when TBMs encounter extremely hard rocks.
Jinliang Zhang +5 more
doaj +1 more source
On the puzzling feature of the silence of precursory electromagnetic emissions [PDF]
, 2013 It has been suggested that fracture-induced MHz-kHz electromagnetic (EM) emissions, which emerge from a few days up to a few hours before the main seismic shock occurrence permit a real-time monitoring of the damage process during the last stages of ...
Chelidze, T. +2 more
core +2 more sources
Study of the plasma flow interaction with the borehole surface in the process of its thermal reaming [PDF]
, 2018 Purpose. Study of the plasma flow interaction with the borehole surface in the process of its thermal reaming for determination of transient temperature distribution along the borehole surface and the average coefficient of heat transfer from the plasma ...
Horiachkin, V +7 more
core +1 more source
Strength through diversity: how cancers thrive when clones cooperate
Molecular Oncology, EarlyView.Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken +3 more
wiley +1 more source
Numerical Simulation of Rotary Impact Rock-Breaking Process of a Full-Size Drill Bit
Shiyou jixie, 2023 As the key fundamental aspect of rotary impact drilling technology, the mechanism of rock breaking has not been well demonstrated, which limits the application of this technology.To illustrate the rotary impact rock-breaking process, the numerical ...
Yan Yan +5 more
doaj
Experimental Studies of Electrical Fields on a Breaking Rock Sample [PDF]
, 2001 When a rock sample is pressed by a force, the pressure on the crystal lattice generates an electrical field around the quart grains due to the piezoelectric effect.
Marone, Chris J. +3 more
core
, 2018 The hypothesis of critical failure relates the presence of an ultimate stability point in the structural constitutive equation of materials to a divergence of characteristic scales in the microscopic dynamics responsible for deformation. Avalanche models
Baró, Jordi, Davidsen, Jörn
core +1 more source
Frontiers in Earth Science, 2023 In order to improve the digging efficiency of tunnel boring machine (TBM) in high-strength and highly abrasive formations, high-pressure water jet-assisted tunnel boring machine rock breaking technology has been developed and applied in steps.
Yalong Jiang +4 more
semanticscholar +1 more source
Molecular Oncology, EarlyView.Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice +16 more
wiley +1 more source
Numerical Simulation Study on Characteristics of Tight Hard Sand Broken by Axe-shaped PDC Cutter
Shiyou jixie, 2021 The study on the specific rock breaking mechanism of axe-shaped PDC cutter in the existing literatures is relatively less, the rock breaking characteristic test data are mostly for field application data, and there is short of theoretical basis of tooth ...
Zhao Runqi +5 more
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