The existence of explosive phase transitions in random (Erdös Rényi-type) networks has been recently documented by Achlioptas, D'Souza, and Spencer [Science 323, 1453 (2009)] via simulations. In this Letter we describe the underlying mechanism behind these first-order phase transitions and develop tools that allow us to identify (and predict) when a random network will exhibit an explosive tran...

Abstract The characteristics of wet micro burst are more complex, which will cause some deviation on the artillery range, side and other parameters, have a great influence shooting accuracy. Taking 155 mm explosive shell as research object, based vortex ring principle fluid mechanics, micro-downburst raindrop motion model was established, integrated into suitable for ballistic analysis calculat...

This paper concerns a new method for projectile disposal by emptying the explosives in projectiles with electromagnetic heating. It explains basic principles of technology via A multiphysical analysis model coupled an electromagnetic, thermal, fluid and phase transition is established, explosive melting simulation conducted based on this model. The dynamic process from solid to liquid simulated...

Electrospun aggregation-induced emission (AIE)-active polyhedral oligomeric silsesquioxane (POSS)-based copolymer films exhibit an approximately 9-fold increase in response to explosive vapors compared to dense films although porous copolymer films have a thickness as high as 560 ± 60 nm.

Improvised explosive devises (IEDs) represent the greatest threat to personnel deployed to combat zones. Improvements in the capacity to detect and neutralize these threats are therefore a crucial concern. Although technology can provide better protection against explosions and, perhaps, improve detection, IED detection will for the foreseeable future be dependent on the capacity of mounted and...

Extended multireference configuration interaction with singles and doubles (MR-CISD) calculations of nitroethylene (H2C═CHNO2) were carried out to investigate the photodynamical deactivation paths to the ground state. The ground (S0) and the first five valence excited electronic states (S1-S5) were investigated. In the first step, vertical excitations and potential energy curves for CH2 and NO2...

The detection of explosives and explosive-related compounds has become a heightened priority in recent years for homeland security and counter-terrorism applications. There has been a huge increase in research within this area-through both the development of new, innovative detection approaches and the improvement of existing techniques. Developments for miniaturisation, portability, field-rugg...