Results 101 to 110 of about 38,940 (240)

Experimental study of bullet-proofing capabilities of Kevlar, of different weights and number of layers, with 9 mm projectiles

open access: yesDefence Technology, 2019
Kevlar is the most commonly used material as armour for protection against bullets used in hand guns because of its impact resistance, high strength and low weight.
Riaan Stopforth, Sarp Adali
doaj   +1 more source

Twitching Motility of Bacteria with Type IV Pili: Fractal Walks, First passage time and their Consequences on Microcolonies

open access: yes, 2017
A human pathogen, \textit{Neisseria gonorrhoeae} (NG), moves on surfaces by attaching and retracting polymeric structures called Type IV pili. The \textit{tug-of-war} between the pili results in a two-dimensional stochastic motion called \textit ...
Banerjee, Varsha   +3 more
core   +1 more source

The Microstructure and High‐temperature Cycle Oxidation Mechanism of the Nickel‐Based Superalloy Surface Treated by Laser Shock Processing and Ion Implantation at 1100 °C

open access: yesAdvanced Materials Interfaces, Volume 13, Issue 3, 3 February 2026.
Laser shock processingcombination with Hf ion implantation results in dual modification on the surface of GH202 nickel‐based superalloy, which induces a large number of crystal defects, providing channels for the diffusion of metal cations. Hf ion implantation forms an amorphous HfO2 layer.
Jiangdong Cao   +7 more
wiley   +1 more source

A Facile Synthesis Route of Hybrid Polyurea-Polyurethane-MWCNTs Nanocomposite Coatings for Ballistic Protection and Experimental Testing in Dynamic Regime. [PDF]

open access: yesPolymers (Basel), 2021
Toader G   +10 more
europepmc   +1 more source

Advanced Ceramics in Aerospace and Defense: The Interrelationship between Traditional and Additive Manufacturing Approaches

open access: yesAdvanced Materials Technologies, Volume 11, Issue 3, 5 February 2026.
Additive manufacturing revolutionizes production by enabling on‐demand, customized, and sustainable manufacturing with streamlined supply chains. While metal and polymer AM are well‐established, advanced ceramic AM is rapidly emerging, overcoming traditional material challenges.
Kateryna Oleksandrivna Shvydyuk   +2 more
wiley   +1 more source

Ballistic Head Protection in the Light of Injury Criteria in the Case of the Wz.93 Combat Helmet

open access: yesApplied Sciences, 2019
This paper discusses the general conditions relating to ballistic head protection, analyzing the risks that may occur on contemporary battlefields. A thorough literature review has enabled us to present development trends for helmets used in the largest ...
Krzysztof Jamroziak   +6 more
doaj   +1 more source

The current state, problems and future of Germany's air and missile defence. OSW Commentary No. 105, 2013-04-10 [PDF]

open access: yes, 2013
From German point of view, air and missile defence systems are of little relevance for the protection of Germany’s territory. However, they are seen as important for conducting ‘out of area’ operations, providing military assistance to allies, and for ...
Gotkowska, Justyna
core  

Recent Advances in Integrating Graphene into Polymeric Nanocomposite Hydrogels for Biomedical Applications

open access: yesMacromolecular Bioscience, Volume 26, Issue 2, February 2026.
This review explores recent progress in graphene‐based polymeric nanocomposite hydrogels and how they enhance mechanical strength, electrical conductivity, and biocompatibility. It outlines key fabrication strategies and highlights applications in drug delivery, tissue engineering, and photothermal therapy, while also discussing the emerging role of ...
Abrar Hussain   +7 more
wiley   +1 more source

Biological Flora of Britain and Ireland: Geranium sylvaticum*

open access: yesJournal of Ecology, Volume 114, Issue 2, February 2026.
Geranium sylvaticum is a perennial forb of upland grasslands, woodlands and riverbanks in northern Britain, with scattered native occurrences also in Wales, central England and Northern Ireland. It has an extensive native range in Europe and Asia. The species is gynodioecious, with individual plants typically female or hermaphrodite.
Markus Wagner   +6 more
wiley   +1 more source

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