In this article, we combined a search-based technique with model-based mutation testing to
overcome the inherent computational cost that comes with the test-case generation of the …

Acidification is a common method for removing minerals from coal. In this study, four groups
of acidification samples were evaluated: raw coal (Raw), hydrofluoric acid (HF), hydrochloric …

Coal mining in China has gradually entered deep levels. With the continuous increase in
mining depth, the outburst risk of coal seam has significantly increased, with both the frequency …

To construct a molecular model of coal and study the adsorption characteristics from the
perspective of microscopic molecules, the microstructure of coal samples from Pingdingshan …

Real-time monitoring is essential for safeguarding infrastructure in extreme environments,
particularly in remote areas with abundant wind resources where sustained strong winds are …

Using a self-constructed microwave radiation experimental setup, microwave thermal radiation
experiments were conducted on Shanxi anthracite coal. This investigation delved into the …

This study presents a triboelectric-piezoelectric hybrid nanogenerator for harvesting rotational
energy based on a bistable cantilever beam. The nonlinear bistable behavior effectively …

The stress relief mechanism and the limitation of a borehole drilling are pointed out by
theoretical and numerical analysis. The stress is relieved around the borehole wall, and the gas …

We propose a snap-through triboelectric nanogenerator with magnetic coupling and buckled
bistable mechanism to harvest rotational energy (ST-RTENG). The buckled bistable beam …

The vibration characteristics and control capabilities of a cantilever sandwich beam with
electrorheological (ER) elastomers subjected to different electric fields are investigated in this …