Results 31 to 40 of about 139,468 (284)

Application of gurney and flight of fragment calculations for water jet velocities in explosive applications

Defence Technology
This study investigates the application of Gurney and flight of fragment equations, typically used to predict metal fragment velocities, in modeling the water jet behavior. Three shotgun cartridge sizes were used as the energy source: 2.59 g, 5.83 g, and
Rachel L. Bauer, Tate B. Friedrich, Catherine E. Johnson   +2 more
doaj   +1 more source

Investigation on energy output structure of explosives near-ground explosion

Defence Technology, 2020
In order to give the energy output structure of typical explosives near-ground explosion in real ground conditions, the free-field shockwave, ground reflection shockwave and Mach wave overpressure time history of composition B explosive, RDX explosive ...
Wen-long Xu, Cheng Wang, Jian-ming Yuan, Wei-liang Goh, Tao Li   +4 more
doaj   +1 more source

Intensification of technological processes in drilling and blasting operations during open-cut mining in Kyzylkum region [PDF]

, 2018
Purpose. It is found that for long term standing, the pit bench profile is close to the boundary of the disturbed zone. Therefore, long stability of the bench can be estimated in respect to the size of the disturbed area and the boundary of residual ...
Karimov, Sh, Ravshanova, M, Zairov, Sh
core   +1 more source

Enhancing Safety in U.S. Coal Mines Through a Rib Support Recommendation Tool

Geosciences
Despite ongoing efforts to enhance coal rib stability, the underground coal mining sector continues to face incidents of rib failure, leading to injuries and fatalities.
Alper Kirmaci, Dakshith Ruvin Wijesinghe, Dogukan Guner, Kutay E. Karadeniz, Cameron Mitchell, Taghi Sherizadeh   +5 more
doaj   +1 more source

Development of a Molecular-Imprinted-Polymer based sensor for the electrochemical determination of Triacetone Triperoxide (TATP) [PDF]

, 2014
.The explosive triacetone triperoxide (TATP), which can be prepared from commercially readily available reagents following an easy synthetic procedure, is one of the most common components of improvised explosive devices (IEDs).
Ansari, Belluck, Burks, Buttigieg, Jose Gonzalez-Rodriguez, Kende, Laine, Li, Lin, Lubczyk, Lubczyk, Oxley, Riskin, Samuel Mamo, Schulte-Ladbeck, Sharma, Walter, Widmer, Xie, Yan   +19 more
core   +2 more sources

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

FEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point, Wafaa Achache, Janïs Laudouze, Eliana Sepulveda Ramos, Mickaël Maziero, Céline Crauste, Stéphane Canaan, Pierre Santucci   +7 more
wiley   +1 more source

Experimental determination of TNT equivalence values for binary energetic materials

Scientific Reports
TNT equivalency quantifies the impact of energetic materials relative to TNT, aiding in safety guidelines and performance evaluations. Despite widespread use in industry, military, and research, many binary energetics lack published TNT equivalence ...
Gracie May M. James, Rachel L. Bauer, Emily M. Johnson, Catherine E. Johnson   +3 more
doaj   +1 more source

Permanent wire splicing by an explosive joining process [PDF]

, 1991
The invention is an apparatus and method for wire splicing using an explosive joining process. The apparatus consists of a prebent, U-shaped strap of metal that slides over prepositioned wires.
Bement, Laurence J., Kushnick, Anne C.
core   +1 more source

Process‐Informed Analysis of As‐Built Metal Additive Surface Features

Advanced Engineering Materials, EarlyView.
This article introduces a novel method for feature‐based surface texture characterisation directly incorporating manufacturing variables into the feature extraction workflow. This marks a major step towards identifying process‐specific surface properties and their influence on part function and hence a holistic understanding of process–structure ...
Theresa Buchenau, Adam Thompson, Hauke Brüning, Marc Amkreutz, Bernd Mayer, Samanta Piano   +5 more
wiley   +1 more source

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

Advanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen, Anastasiya Toenjes, Annika Bohlen, Thomas Seefeld   +3 more
wiley   +1 more source