Aqueous nanolubricants containing ZrO2 nanoparticles, graphene oxide (GO) nanosheets, or hybrid nanoparticles of ZrO2 and GO were formulated using Peeler a cost-effective ultrasonication de-agglomeration method.The friction and wear characteristics of these water-based nanolubricants were systematically investigated using a block-on-ring testing co
The variation trends and characteristics of polar mesospheric clouds (PMCs) are important for studying the evolution of atmospheric systems and understanding various atmospheric dynamic processes.Through observation and analysis of PMCs, we can gain a comprehensive understanding of the mechanisms driving atmospheric processes, providing a scientifi
Dental trauma is a very frequent occurrence in children and adolescents, which creates a great impact on the esthetics, functions, and phonetics.Traumatic dental injuries can range from simple enamel fractures to permanent tooth loss.This case report presents an eight-year-old patient with an uncomplicated crown fracture of Dresser tooth 21, and 30