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15.310  Articles
1 of 1.531 pages  |  10  records  |  more records»
Roads and railways, as the main parts of traffic infrastructure, represent geometrically rigid elements which are hard to adapt to certain kinds of landscapes without making large changes to the terrain itself. Today, thanks to modern technology and a lar... see more

Context. The problem of geometric modelling of transitional curves, which are placed between rectilinear and circular sections of railway tracks, can be considered solved sufficiently. However, there are a number of factors that contribute to the developm... see more

The paper focuses on assessing the usability of fatigue pre-cracked Charpy type specimens when evaluating the resistance of steel with ferritic-pearlitic structure to the initiation of unstable fractures. The suitability of using the specimens is eva... see more

Welded products of quenched and tempered (QT) structural steels are used from ambient to moderately low design/service temperatures. Therefore, besides base metal, a weld also must possess required minimal design impact toughness (KV) at temperatures lowe... see more

Purpose. When locomotives move in curved sections of the railway track, horizontal forces arise, which lead to pressing the ridge of the wheel pair to the railway track. The article is aimed to develop a method for determining the frame force acting on th... see more

The melting curves of rhenium and osmium to megabar pressures are obtained from an extensive suite of ab initio quantum molecular dynamics (QMD) simulations using the Z method. In addition, for Re, we combine QMD simulations with total free energy calcula... see more

Transition and smooth flows are often encountered during experiments in the laboratory and even sometimes in the field. The transition domain occupies a fairly large space in Moody's diagram while the smooth flow is reduced to a curve which represents the... see more

Objective: To determine diagnostic accuracy of NMP 22 and urine cytology in the detection of transitional cell carcinoma (TCC) urinary bladder taking cystoscopy as a gold standard in patients having provisional diagnosis of bladder cancer (BC).Methods: Th... see more

The results of studies of motion of the rail transport facilities on circular and transition curves are prersented. In particular the questions of vibrations, stationary modes, stability and safety of coach, locomotive and transporter motion not only on s... see more

1 of 1.531 pages  |  10  records  |  more records»