In the modern world, when problems of environment are most acutely associated with climate change, amphibians considered to be vulnerable group anamniotes as an indicator state wetlands. Along a decrease numbers among in Europe, nowadays newts especially suffer from impact invasive species, particular predators such Chinese sleeper, Perccottus glenii. This predatory fish species has recently sp...

The load generated during train operation is transmitted to sleepers through rails, and then from trackbeds. As one of the important components track structure, are very service-life safety railways. running speed will produce different frequencies on rails. To explore response under cyclical loads, this research used discrete element method simulate rails sleepers, realizes loading by applying...

Tubulin modifications are emerging as interesting mechanisms to regulate microtubule dynamics. A new study shows that phosphorylation of α-tubulin by the atypical kinase PHS1 leads to rapid disassembly of cortical microtubules in plant cells that are under hyperosmotic stresses.

This contribution adopts the taxonomic concept annotation and alignment approach. Accordingly, and where indicated, previous and newly inferred meanings of taxonomic names are individuated according to one specific source. Articulations among these concepts and pairwise, logically consistent alignments of original and revisionary classifications are also provided, in addition to conventional no...

Railway switches and crossings (S&C, turnouts) connect different track sections create a railway network by allowing trains to change tracks. This functionality comes at cost as the load-inducing rail discontinuities in switch crossing panels cause much larger degradation rates for S&C compared regular plain line The high make remote condition monitoring an interesting prospect infrastructure m...

A new output structure for class E power amplifier (PA) is proposed in this paper. A series LC resonator circuit, tuned near the second harmonic of the operating frequency is added to the output circuit. This resonator causes low impedance at the second harmonic. The output circuit is designed to shape the switch voltage of the class E amplifier and lower the voltage stress of the transistor. T...