The free vibrations of cantilever slender beams polymers, which are viscoelastic materials, theoretically described using the simple Euler–Bernoulli assumption. comparison between theory and experimental data collected for a thermoplastic elastomer, polyether block amide, shows very satisfactory results. Consequently, is used thoughtful analysis impact material parameters beam geometry on its v...

The paper presents the results of a study dilatometric properties thermoplastic elastomer nanocomposites based on mixtures random polypropylene, nitrile butadiene rubber, compatibilizer - copolymer polypropylene with maleic anhydride. Nanosized bentonite particles were used as filler. concentration nanoparticles was varied in range 1.0-20 wt %. values free and occupied specific volumes determin...

In Saccharomyces cerevisiae, genes placed near telomeres are transcriptionally repressed (telomere position effect, TPE). Although telomeric DNA sequence is the same at all chromosome ends, the subtelomeric elements (STEs) and level of TPE vary from telomere to telomere. We tested whether STEs determine TPE levels. STEs contributed to TPE, as deleting the X element from the VI-R telomere modest...