Aluminum Dust Explosion Suppression Performance and Mechanism of a New Mesoporous Composite Explosion Suppressant.

In this paper, using a 20 L spherical explosive device and a Hartmann device, we carried out explosion suppression experiments on 19 and 30 μm aluminum powders (500 g/m) with different concentrations of the new explosive suppressants (MCM41@CS-APP) and CaCO and elaborated on the suppression mechanism of the explosion of MCM41@CS-APP on aluminum powder. The experimental results show that when the concentration of the explosion suppressor is 50 g/m, the maximum explosion pressure ( ) produced by the explosion of mixed dust is higher than that of the explosion of aluminum powder, and with the increase of the concentration of the deflagration suppressant, the of the mixed dust decreases. When the concentrations of MCM41@CS-APP and CaCO reached 400 g/m, the of the mixed dust (Al = 19 μm) was 0.

Study on the Law of True Triaxial Hydraulic Fracturing by Acoustic Emission Monitoring.

Hydraulic fracturing generates fractures in a coal seam, which has been extensively used in coal mining and disaster management. To study the influences of water injection pressure and time on the propagation of hydraulic fracture, we conducted true triaxial hydraulic fracturing experiments under acoustic emission monitoring. Five briquette specimens were prepared by molding the mixture of coal powder, cement, river sand, and distilled water under 60 MPa to simulate the properties of coal seam.

Online application for the diagnosis of atherosclerosis by six genes.

Background: Atherosclerosis (AS) is a primary contributor to cardiovascular disease, leading to significant global mortality rates. Developing effective diagnostic indicators and models for AS holds the potential to substantially reduce the fatalities and disabilities associated with cardiovascular disease. Blood sample analysis has emerged as a promising avenue for facilitating diagnosis and assessing disease prognosis.