Results 21 to 30 of about 169,039 (185)
Evolution and Nucleosynthesis of Metal-Free Massive Stars [PDF]
, 1999 We calculate presupernova evolutions and supernova explosions of massive stars (M=13-25 Mo) for various metallicities. We find the following characteristic abundance patterns of nucleosynthesis in the metal-free (Pop III) stars.
Nakamura, Takayoshi +2 more
core +2 more sources
Applied scientific and systemic problems of the related ore-dressing plants interaction in the event of decommissioning the massif that separates their quarries [PDF]
, 2020 Purpose. Determining the possible and substantiating expedient alternate design and engineering decisions regarding the stage of spacial union of the adjacent quarries belonging to various owners by mining the rock pillar between the No. 3 quarry of PJSC
Azarian, Volodymyr +5 more
core +1 more source
AIP Advances, 2018 To control the explosion energy output by optimizing explosive components is a key requirement in a number of different application areas. The effect of different Al/O Ratio on underwater explosion of aluminized explosives has been studied detailedly ...
Qingjie Jiao +5 more
doaj +1 more source
Zhongguo Jianchuan Yanjiu, 2019 [Objectives]In order to analyze the deformation and energy absorption characteristics of the stiffened plate under explosive impact loads,[Methods]the finite element analysis software LS-DYNA is used to simulate and calculate the deformation and energy ...
Chen Pengyu +3 more
doaj +1 more source
Multiple changes in persistence vs. explosive behaviour: the Dotcom bubble [PDF]
, 2012 Based on a method developed by Leybourne, Kim and Taylor (2007) for detecting multiple changes in persistence, we test for changes in persistence in the dividend-price ratio of the NASDAQ stocks.
de Medeiros, OR, Leone, V
core +1 more source
Effect of CH4–Air Ratios on Gas Explosion Flame Microstructure and Propagation Behaviors [PDF]
Energies, 2012 To reveal the inner mechanism of gas explosion dynamic behavior affected by gas equivalent concentration, a high speed Schlieren image system and flow field measurement technology was applied to record the gas explosion flame propagation and flame structure transition. The results show that a flame front structure transition occurs, followed by a flame
Xianfeng Chen, Yin Zhang, Ying Zhang
openaire +3 more sources
Design of a novel instrument for active neutron interrogation of artillery shells. [PDF]
PLoS ONE, 2017 The most common explosives can be uniquely identified by measuring the elemental H/N ratio with a precision better than 10%. Monte Carlo simulations were used to design two variants of a new prompt gamma neutron activation instrument that can achieve ...
Camille Bélanger-Champagne +5 more
doaj +1 more source
The quest for explosive bubbles in the Indonesian Rupiah/US exchange rate: Does the uncertainty trinity matter? [PDF]
Decision Science LettersThe Generalized Supremum Augmented Dickey-Fuller (GSADF) technique is performed to resolve whether the Indonesian Rupiah/US exchange rate has experienced multiple explosive bubbles.
Abdul Khaliq +3 more
doaj +1 more source
Advances in Materials Science and Engineering, 2021 Antiknock research of reinforced concrete (RC) slabs is often carried out with spherical or nearly spherical explosives, although many explosives used in engineering and military are cylinder shaped.
Xiaohua Zhao +4 more
doaj +1 more source
Modes of Growth in Dynamic Systems [PDF]
, 2012 Regardless of a system's complexity or scale, its growth can be considered to be a spontaneous thermodynamic response to a local convergence of down-gradient material flows.
de Groot S. R. +8 more
core +2 more sources