One of the most important factors influencing the track maintenance is the transitions between parts of the track with different vertical stiffness. The dynamic...

this paper deals with the threshold radius that warrants the use of single restraining rail for transit and railroads. different railways use different threshold radius from 91m to 365m to provide restraining rail. these threshold figures are probably experience driven choices. the need for restraining rail may be related to a so-called derailment alarm coefficient of 1.2 sustained over 2m leng...

Etched tracks of apatite and zircon are both widely used for the determination of the thermal history of Earth’s crust. The present understanding of the annealing process is largely limited to mathematical fits to data for etched track-lengths as a function of temperature and time. Details of the annealing of unetched, latent tracks at the atomic scale have remained elusive, as the original tra...

ALICE is the dedicated heavy-ion experiment at CERN Large Hadron Collider (LHC). Its main tracking and particle-identification detector a large volume Time Projection Chamber (TPC). The TPC has been designed to perform well in high-track density environment created high-energy collisions. In this proceeding, we describe track reconstruction procedure ALICE. particular, focus on two challenges t...

Many properties of nanoparticles (NPs) are closely tied to their size, shape, surface, and internal structures [1, 2]. Different synthesis methods can produce an array of NP sizes and shapes, but it is also desirable to have methods to modify existing NPs. Extensive research on ion beam induced surface modification of bulk materials [3] has led to a strong understanding of ion-solid interaction...

One of the most important challenges in the development of urban railways network is the effects of railway vibrations on human and adjacent structures. Although various investigations into the sources of railway vibrations have been conducted, very few research works have been reported on the influences of track geometry parameters on the level of vibrations. This is addressed in this resea...