Results 51 to 60 of about 11,568 (266)

Numerical Analysis of a High-Velocity Projectile’s Impact on Shallow Steel Tunnels in Soft Sandstone

open access: yesInfrastructures
Tunnels are underground infrastructures intended for diverse community applications as well as military applications. During impact loading due to high-velocity projectiles such as ballistic missiles, materials experience a high strain rate.
Rupali Sarmah   +2 more
doaj   +1 more source

Impact of Concave and Convex Solid Surfaces By Liquid-Like Projectiles

open access: yesTikrit Journal of Engineering Sciences, 2007
A theoretical and experimental investigation of the normal impact of a flat-ended liquid slug onto ductile cylindrical solid targets is presented. The liquid slug is simulated by wax which is known to behave as a liquid in high speed impact situations ...
Riyadh N. Kiter, Sabah A. L. Salem
doaj   +1 more source

PROJECTILES IN THE CEREBRAL VENTRICLES [PDF]

open access: yesThe Journal of Nervous and Mental Disease, 1921
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openaire   +2 more sources

ZnO Nanowires by Chemical Bath Deposition: A Review on Doping and Functional Devices

open access: yesElectron, EarlyView.
This review reports the most recent and well‐established state‐of‐the‐art and scientific challenges related to the doping of ZnO nanowires by chemical bath deposition, encompassing native point and hydrogen‐related defects, as well as extrinsic dopants.
Clément Lausecker   +3 more
wiley   +1 more source

Projectile Seating Depth Influence on a Small Arms Cartridge Performance

open access: yesTechnologia i Automatyzacja Montażu
In the world of small-arms ammunition, precision reigns supreme. The most significant feature of ammunitionfor shootersis undoubtedly the repeatability from one shot to the next. This study exploresthe detailedassembly process of small arms
Krzysztof Piasta   +3 more
doaj   +1 more source

Cratering for Impact of Hypervelocity Projectiles into Granite Targets within a Velocity Range of 1.91–3.99 km/s: Experiments and Analysis

open access: yesApplied Sciences, 2020
To understand and analyze crater damage of rocks under hypervelocity impact, the hypervelocity impact cratering of 15 shots of hemispherical-nosed cylindrical projectiles into granite targets was studied within the impact velocity range of 1.91−3 ...
Xiaofeng Wang   +6 more
doaj   +1 more source

Psychological stress during wartime and its association with seizure‐related emergency department utilization

open access: yesEpilepsia, EarlyView.
Abstract Objective Psychological stress is commonly reported as a seizure precipitant in epilepsy, yet evidence from major crises remains limited and inconsistent. We examined whether the October 2023 Israel–Hamas conflict affected acute seizure‐related healthcare utilization among adults with epilepsy. Methods We conducted a retrospective cohort study
Anda Eilam   +6 more
wiley   +1 more source

Iron Energy Carrier: Experimental Characterisation, Combustion Diagnostic and Benchmarking with Other Clean Metal Fuels

open access: yesEnergy Science &Engineering, EarlyView.
This study investigates how iron particles burn across a wide size range, revealing late‐stage nanoparticle release and a previously unrecognised shift in combustion behaviour near 118 µm. High‐speed imaging, PMT diagnostics and SEM analyses have been conducted.
Zakaria Mansouri
wiley   +1 more source

Numerical analysis of the penetration process of a 30mm armor-piercing fin-stabilized discarding sabot projectile

open access: yesVojnotehnički Glasnik
Introduction/purpose: In recent times, with the tendency to develop new types of armor-piercing ammunition, constant investments in the development of new types of armored obstacles is necessary.
Predrag R. Pantović   +4 more
doaj   +1 more source

Modeling of Dual-Spinning Projectile with Canard and Trajectory Filtering

open access: yesInternational Journal of Aerospace Engineering, 2018
The article establishes a seven-degree-of-freedom projectile trajectory model for a new type of spinning projectile. Based on this model, a numerical analysis is performed on the ballistic characteristics of the projectile, and the trajectory of the dual-
Jun Guan, Wenjun Yi
doaj   +1 more source

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