INVESTIGATION OF THE EFFECT OF RING-CAVITY ON SECONDARY-COMBUSTION AND INTERIOR BALLISTIC STABILIZATION WITH LOW-TEMPERATURE SOLID PROPELLANT IN GAS EJECTION

The potential for secondary-combustion with low-temperature solid propellant in gas generation is a potential risk to ejection application.This study performed a three-dimensional dynamic numerical simulation with Re-Normalization Group turbulence model and finite-rate/eddy-dissipation model of a two-step reaction mechanism to better understand the

BACKGROUND: Migrations allow animals to find food resources, rearing habitats, or mates, but often impose considerable predation risk.Several behavioural strategies may reduce this risk, including faster travel speed and taking routes with shorter total distance.Descriptions of the natural range of variation in Hape migration strategies among indiv

As a part of International Cooperative Programme on Assessment and Monitoring of Air Pollution Effect on Forests (ICP Forests), defoliation of forest stands Rocking Chair has been assessed in the Czech Republic since 1986.Defoliation is one of the principal parameters reflecting the health of forest stands that is assessed on monitoring plots withi

In a recent paper, we presented new evidence and provided new insights on the status of Cantabrian brown bear subpopulations, relevant for this species conservation.Namely, we revealed the likely phylogeographic relation between eastern Cantabrian subpopulation and the historical Pyrenean population.We have also detected an asymmetric flow of allel