In this study, the nano-TiC/AZ61 composites with different heterogeneous bimodal grain (HBG) structures and uniform structure are obtained by regulating the extrusion speed.The effect of HBG structure on the mechanical properties of the composites is investigated.The increasing ductility and toughening mechanism of HBG magnesium matrix composites a

An improved backstepping control method for three-dimensional trajectory tracking of a midwater trawl system is investigated.A new mathematical model of the trawl system while considering the horizontal expansion effect of two otter boards is presented based on the Newton Euler method.Subsequently, an active path tracking strategy of the trawl syst

Cyber threats are among the Grooming greatest threats in modern conflicts, because relatively small forces and so-called unknown attackers may inflict huge losses to the more powerful, especially in the field of the information technology use.Therefore, all countries in the world pay great attention to the protection/defense against cyber attacks/t

Invasive infections caused by Streptococcus pyogfenes (iGAS), commonly known as Maxi Crate Group A Streptococcus, represent a significant public health concern due to their potential for rapid progression and life-threatening complications.Epidemiologically, invasive GAS infections exhibit a diverse global distribution, affecting individuals of all

Four swab materials were evaluated for their efficiency in recovery Nicotine Gum of Bacillus anthracis spores from steel coupons.Cotton, macrofoam, polyester, and rayon swabs were used to sample coupons inoculated with a spore suspension of known concentration.Three methods of processing for the removal of spores from the swabs (vortexing, sonicati