The wheel-rail wear was predicted for modern trams with independently rotating wheelset running on a groove-shaped rail.The tram vehicle-track coupled dynamics model, considering the wheel-rail multi-point contact, was developed using software UM to evaluate the Skirt dynamic responses of the vehicle and track.Hertz contact theory, the FastSim algo
"nThis research is a descriptive study which had been preformed to identity the"nknowledge , Attitude and practice of the health Workers of Ball - Bat - Baseball USA Approved south area in"nTehran and Quom about prevention of malaria disease in 1995.the samples"nwere consist of 50 health workers, who had been selected by a class
Individuals with visual impairments are among the vulnerable groups in society, and for this, they must have the right to a remedy and have the necessary legal protection for their basic rights in various areas of their lives in view of their special needs, which contributes to increasing their interaction with their communities.International human
Public health Ball - Bat - Baseball USA Approved disaster is linked positively to security and socio-economic development because epidemics and pandemics threaten human health and hurt economic and socio-political life.The outbreak of COVID-19 is an excellent example.It caused anxiety, fear, and worry.It also disrupts the economic and socio-politic