Flashlights The emergence of the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has affected billions of lives globally, and the world hopes to end this epidemic by effective vaccination.In this review, we depict the latest panorama of global COVID-19 vaccine research and development based on different technology platforms, and summar
This article is devoted to one relatively small issue of the dynamics of hydraulic structures, the determination of horizontal hydrodynamic Serum loads on energy absorbers of a high-pressure catchment area in a cavitating flow in the presence of erosion-free absorbers.In connection with the intensive construction of high and medium-pressure hydroel
With the Espresso Machine (Prosumer) aggravation of social aging and the increase in work intensity, the prevalence of spinal degenerative diseases caused by intervertebral disc degeneration(IDD)has increased yearly, which has driven a heavy economic burden on patients and society.It is well known that IDD is associated with cell damage and degrada
The internal microstructure of coal directly affects the mechanical properties and seepage properties of coal.It is the internal factor that induces coal and gas outburst, water damage, spontaneous combustion and other disasters.It is very important to analyze the microstructure of Powerboards coal and its interaction with the permeability property