Fluid replacement mainly occurs in the early period of imbibition. Macropores contribute most of the imbibition recovery, mesopores have a weak contribution, and the contribution of micropores and pinholes can be ignored. For the reservoirs with low permeability, capillary force ...
Transitioning to the fracture formation stage, shear stress surpasses the shear strength in weak areas of the rock mass, triggering the formation and propagation of micro-cracks under increasing driving force. This process is accompanied by the emission of small elastic waves and the gradual ...
To investigate the effect of water on the mechanical properties and acoustic emission (AE) characteristics of coal in the failure and deformation processes. Coal samples of different content were subjected to uniaxial compression tests and AE signals wer
Inside the Party, there were many issues with respect to upholding the Party's leadership, including a lack of clear understanding and effective action as well as a slide toward weak, hollow, and watered-down Party leadership in practic...
In consideration of the constraints of actual working fluids on theoretical study of organic Rankine cycle (ORC), a trapezoidal cycle (TPC) with theoretical model to simulate ORC was proposed in previous works. In this study, mathematical models of working fluids including model of simulated saturat...
which may be due to the increased exposure of active groups such as hydroxyl groups of PLP after ultrasound. Further investigation showed that PLPs not only increased Nrf2 phosphorylation and its nuclear translocation, thereby activating Nrf2/Keap1 signaling pathway, but also enhanced HO-1, NQO-1...
Generally, the bedding fractures developed along weak laminar planes under the strike-slip stress are a common fracture type in the shale, with aperture of several mm to dozens of mm, few nanometer (Fig. 4f and g).The interlaminar fractures are usually filled with organic matter with yellow ...
Surface water samples had pH values of 8.1–8.7 (mean = 8.4) and TDS concentrations of 102–413 mg/L (mean = 253 mg/L). Both groundwater and surface water samples displayed weak alkaline affinity in nature and large variation in TDS concentration. The concentration of major ions ...
The microwave-assisted rock breaking technology has been proven to be feasible, and has received considerable attention in the field of civil and mining engineering. A copper foil was used to wrap basalt to simulate rock excavation of practical applicati
Since JH-1, JH-2, JH-9, and JH-10 have relatively strong recirculation strengths near the air inlet when Rsj = 0.05, they are able to withstand the wall shear force that is produced in this situation. Because they are weak and unable to withstand the shear stress, the gyres JH-...