At the production of superconductors the compaction of powderform raw materials can be made by means of HERF (H~gh Energy Rate Forming) "powder in tube" techniques, too. The compacting processes of the powders in the metal tubes fitted with metal cores were tested by the authors in the cases of explosive and electromagnetic formings. In order to compare the compacted material structures in the ...

Abstract To explore the application of micro-sized B-Al (boron-aluminum) compound powder in enhanced blast explosive(EBX) and thermobaric explosive(TBX), three HMX-based explosives containing (PF-1, PF-2 PF-3)were designed prepared. The ignition combustion characteristics various samples (micro- nano-sized B, powders without with HMX) under different pressures atmospheres were studied by a lase...

We speculate that the universe is filled with stars composed of electromagnetic and dilaton fields. We calculate soliton-like solutions of these fields and show that their energy can be converted into a relativistic plasma in an explosive way whioch produces strong gamma-ray bursts observed in the universe. The conversion proceeds as in classical detonation theory by a relativistic self-similar...

We designed a dynamic optimization model to examine anuran-breeding phenologies. We evaluated the fitness consequences for males adopting one of four alternative strategies: calling, satelliting, foraging, or hiding. Various factors potentially influence male behavior, including energy reserves, predation risk, cost of calling, probability of finding food, distribution of male energy states in ...

Research on lithium-ion secondary batteries began in the 1980s because of the growing demand for power sources for portable electronic devices. After the early 1990s, the demands for higher capacities and even smaller sizes energy systems significantly increased. Further, the explosive growth in the use of limited fossil fuels and their associated environmental issues and economical aspects are...

In this study explosive substance [2.4.6] three Nitro Toluene (TNT) was attached with nanostructures of fullerene (C24) and boron nitride nano-cages (B12N12). After that using B3LYP (Becke, three-parameter, Lee-Yang-Parr), a method from density functional theory (DFT), thermodynamic parameters of TNT with foregoing nanostructures, in different conditions of temperature, were computed. To this a...

Despite the widespread use of pulsed lasers in biomedical applications, the physicochemical mechanisms and dynamics of ablation processes remain unclear. The role of chromophore on pulsed infrared laser ablation of porcine dermis was investigated by performing mass removal and thermal injury experiments. A tunable Transversely Excited Atmospheric (TEA) CO 2 laser was selected for this study bec...