The fracture development of the overlying strata after coal mining is an important guarantee of efficient gas drainage.In order to explore the fracture evolution characteristics close to a mined coal seam group, the F15.16-24130 working face in the Pingdingshan No.10 coal mine was taken as the research background.The FLAC3D numerical simulation sof
The former Soviet Union disintegrated three decades ago.That momentous 1991 was not only the starting point for independence of the countries FIDGITS of the post-Soviet space but also the starting point for their transformation from centrally planned economy to capitalism, often with local specificities.At the moment of writing this article aiming
This in-vitro study aimed to evaluate the changes in color stability and surface roughness of a universal single-shade dental composite, Omnichroma on immersion in different alcoholic beverages.Eighty-four Palfique Omnichroma (Tokuyama Dental Corporation, Japan) dental composite discs were fabricated and categorized into three groups Accent Chair a