Abstract The rubber material produced by waste tires greatly pollute the environment. Adding it to asphalt mixture can improve its performance of mixture. elastic pavement paved with has strong durability and reduce noise hazard a certain extent. large-diameter particles into materials inhibit icing probability traffic accidents caused skidding in winter. results show that increase content part...

Heavy aircraft main landing gear tyres skid immediately after touchdown as result of the high slip ratio between the tyres and runway, which lead to tyre wear and smoke. In this paper, the tyre wear is modelled on the Archard theory using ANSYS mechanical transient, to reveal the wheel’s dynamic and the tyre tread wear. The wheel’s dynamic and the amount of wear are calculated for initially sta...

A graph of size n is said to be graceful when is possible toassign distinct integers from {0, 1, . . . , n} to its verticesand {|f(u)−f(v)| : uv ∈ E(G)} consists of n integers. Inthis paper we present broader families of graceful graphs; these families are obtained via three different operations: the third power of a caterpillar, the symmetric product of G and K2 , and the disjoint union of G a...

background and objective: ovarian tumors are among the most frequent pathologic conditions in gynecologic practice and a frequent cause of hospitalization and surgery. the aim of this study was to determine histologic distribution of benign operated masses especially functional ovarian cysts. material and methods: benign ovarian files of operated patients (2961 cases) in 20 tertiary and seconda...

The frequent impulse collisions and wear between the ball cage pocket not only affect bearing stability but also significantly impact deterioration of service life. A comprehensive dynamic model for analyzing stability, skidding degree, ball–cage collision, distribution, rate four types is proposed. series tests whirling conducted on self-lubricating test bench using high-speed photographic tec...