Abstract The newly prepared and stored highly active aluminum powder were mixed with common nitramine explosives HMX CL-20 at a mass ratio of 1:1, respectively. effects the two kinds high on thermal decomposition properties investigated by differential scanning calorimetry (DSC). explosion critical temperature mixture explosive was calculated. result shows that after joining aluminium powder, a...

6-Amino-1,2,4-triazolo[4,3-b][1,2,4,5]tetrazine (ATTz)is an explosive material, that has been synthesized from the reaction of 3,6-diaminotetrazine , with nitrous acid and then sodium azide. In the simplest terms, an explosive is defined as a substance, which on initiation by friction, impact, shock, spark, flame, heating, or any simple application of an energy pulse, undergoes a rapid chemical...

[1] A mechanism for explosive volcanic eruptions based on multicomponent phase equilibria modelling of four explosive volcanic systems is proposed. In each system, either isochoric or isobaric crystallization, where either crystals or crystals and exsolved fluid are chemically fractionated from melt, leads inevitably to near-solidus dynamical instability culminating in violent explosive eruptio...

The analysis of explosive force, through rate of force development (RFD) and contractile impulse (CI), from handgrip strength data seems to be useful and promising information to study the aging of musculoskeletal system and health status. We aimed to test the hypothesis that, in elderly women, the handgrip explosive force could be better associated to the functional mobility than maximum handg...

Density functional theory (DFT) was used to understand the shock sensitivity on the properties of high energy density materials (HEDMs) using 1-(2-nitro2-azapropyl)-5H-tetrazole as a test molecule due to its small size and similar explosive properties to more common explosive compounds such as hexahydro-1,3,5-trinitro1,3,5-triazine (RDX), octahydro-1,3,5,7-tetranitro-1,3,5,7-tetraazocine (HMX)....

Explosive shock compaction was used to consolidate powders obtained from melt-spun Pr2Fe14B/ –Fe nanocomposite ribbons, to produce fully dense cylindrical compacts of 17–41-mm diameter and 120-mm length. Characterization of the compacts revealed refinement of the nanocomposite structure, with approximately 15 nm uniformly sized grains. The compact produced at a shock pressure of approximately 1...

The relative elastic energy partitioning during Strombolian eruptions can be estimated from acoustic pressure and seismic velocity records. We outline methods for determining acoustic and seismic energies for sensors deployed within several kilometers of erupting vents. We use these energies to introduce the concept of the volcano acoustic–seismic ratio (g, or VASR), which is the ratio of elast...

The explosive growth in the size of data centers, coupled with the wide-spread use of virtualization technology has brought power and energy consumption as major concerns for data center administrators. Provisioning decisions must take into consideration not only target application performance but also the power demands and total energy consumption incurred by the hardware and software. Failure...