Abstract: the article provides a calculation justification of proposed railway structure on reinforced concrete sleeper-free base, for which an analysis existing methodology calculating track strength is carried out, according to dynamic loads acting from rolling stock are determined. The applied sleeper-less structures and results measurements emerging stresses in substructure, measured depth ...

A private-key cryptosystem may be viewed as a means by which a trusted dealer privately conveys a large, shared pseudo-random object to a pair of players, using little communication. Alternatively, the messages distributed by the dealer may be viewed as a secure compression of a pair of large identical random pads (or random functions) into a shorter shared “key” or “seed”. We pose the question...

The purpose of the research was to study condition prestressed monoblock concrete sleeper (PMCS) under dynamic loading experimentally and through site investigation. From this research, value deflection base on acceleration sleepers have been obtained. This showed possible correlation relation PCS located a railway track. includes experimentation process which experimental investigations for (P...

To determine if helmet removal causes a significant increase in lordosis of the cervical spine in ice hockey players, we radiographically assessed the position of the cervical spine in subjects immobilized to a standard spine backboard wearing shoulder pads both with and without a helmet. Ten adult male volunteers (ages, 18 to 28 years) with no previous history of cervical spine injuries were f...

The peptidylarginine deiminases (PADs) are a family of posttranslational modification enzymes that catalyze the conversion of positively charged protein-bound arginine and methylarginine residues to the uncharged, nonstandard amino acid citrulline. This enzymatic activity is referred to as citrullination or, alternatively, deimination. Citrullination can significantly affect biochemical pathway...

The problem of damping the noise on track, arising from movement train, is solved sufficiently but it simple, if rail with spacers laid inside longitudinally located band sleeper-mechanism. result a layered thread, consisting belts: tape elastic three sides, tie-mechanism and ballast layer. unity layers carried out due to their own mass. This static track without external load. Rail compression...

OBJECTIVE To evaluate vertical forces in the pads of German Shepherd dogs by relative percentage among total limb vertical forces using a pressure sensitive walkway. PROCEDURE A pressure sensitive walkway was used to collect vertical force data for each pad of the limbs of 16 healthy client-owned German Shepherd dogs used for kinetic gait analysis. The vertical force for each pad was evaluate...

Animals using adhesive pads to climb smooth surfaces face the problem of keeping their pads clean and functional. Here, a self-cleaning mechanism is proposed whereby soiled feet would slip on the surface due to a lack of adhesion but shed particles in return. Our study offers an in situ quantification of self-cleaning performance in fibrillar adhesives, using the dock beetle as a model organism...