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Wear and fatigue of wheels have a great effect on the maintenance of railway vehicles and running safety.In the case of an urban railway where no rail lubrication system is installed, it is reported that the risk of wheel damage is high in curved sections.In the present study, we intended to present a method of click here designing a wheel profile
In this paper, the conditions under which the occurrence of the local bifurcation (such as saddle-node (SN), transcritical (TC), and pitchfork (PT)) of all stable points of a food web model have been investigated.Fear and anti-predator responses involving the Holling-type IV and Growly-Martin functional responses have been found.It has been att nig
It is required for many women participating in Hadj rituals to use some methods to postpone their menstruation, because some of the Hadj assignment rites are performed inside the Mecca Holly Mosque (Masjid-al-haram) and in case the woman pilgrim is menstruating, her arrival to Masjid-al-haram is according to the religous law."nThis survey is t