Results 61 to 70 of about 3,229 (238)

Activatable smart contrast agents for photoacoustic imaging

open access: yesSmart Molecules, EarlyView.
This review highlights recent advances in smart activatable photoacoustic imaging (PAI) contrast agents, which dynamically modulate their optical properties in response to external stimuli or microenvironmental cues. It discusses their molecular design, activation mechanisms, biomedical applications, and future prospects for clinically tailored use ...
Donghyeon Oh   +5 more
wiley   +1 more source

The Collision of Tradition, Technology, and Capitalism in American Hunting Culture 美国狩猎文化中传统、技术与资本的碰撞

open access: yesWildlife Letters, EarlyView.
This essay describes the context of big game hunting in the western United States in the twenty‐first century from a sociological perspective. Using Ogburn's theory of cultural lag as a guide, it explores the relationship of technology and capitalism to hunting.
Stephen L. Eliason
wiley   +1 more source

Ballistic composites – protecting the protectors

open access: yesReinforced Plastics, 2017
It seems scarcely credible that thin polymer fibers, bound together in resin, can stop projectiles ranging from a hand-gun bullet to a high-power rifle round, but they can and have done so, saving many lives in the process. Composite body armor protects a wide range of civilians from security guards to police officers and from bailiffs to VIPs.
openaire   +1 more source

Optimisation of ballistic protection systems based on impact test/simulation correlation [PDF]

open access: diamond, 2021
Yohan Cosquer   +3 more
openalex   +1 more source

The Unintended Consequences of German Deterrence

open access: yesGlobal Policy, EarlyView.
ABSTRACT Germany's evolving deterrence posture boils down to continued participation in NATO nuclear sharing and an ambitious conventional rearmament program. Due to its non‐nuclear status and a result of decades of underinvestment, Germany prioritizes modern conventional weapons.
Ulrich Kühn
wiley   +1 more source

Biomimetic design and impact simulation of Al2O3/Al composite armor based on armadillo shell

open access: yesScientific Reports
The advancement of lightweight protective armors holds critical importance for enhancing the maneuverability and combat capabilities of helicopters. Leveraging insights from bionics, it provides a new idea for high-performance armor design. In this study,
Fulong Zhang   +5 more
doaj   +1 more source

Fiber-reinforced polymer matrix composites for improved defence armor - A comprehensive review

open access: yesSmart Materials in Manufacturing
Fiber-reinforced polymer (FRP) matrix composites are prominent defensive armor materials owing to their excellent strength-to-weight ratio and design flexibility.
Nilesh S. Gaikwad   +2 more
doaj   +1 more source

Ballistic Impact Resistance of Plain Woven Kenaf/Aramid Reinforced Polyvinyl Butyral Laminated Hybrid Composite

open access: yesBioResources, 2016
Traditionally, the helmet shell has been used to provide protection against head injuries and fatalities caused by ballistic threats. In this study, because of the high cost of aramid fibres and the necessity for environmentally friendly alternatives, a ...
Suhad D. Salman   +4 more
doaj   +1 more source

A remotely operated blood sampling and sedative administration device in freely moving pinnipeds

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract A remotely operated device for use with freely moving pinnipeds was designed and successfully developed for the collection of blood samples and the administration of sedatives via an indwelling, venous catheter. The performance of the sampler, called the ‘Mossquito’, was demonstrated on six wild caught, young‐of‐the‐year grey seals ...
Joanna L. Kershaw   +10 more
wiley   +1 more source

Influence of surface polyurea coating on the ballistic performance of kevlar fabric

open access: yesHeliyon
With the increasing lethality of modern weapons, the development of body armor has become increasingly important. The main objective of current research is to make protective gear lighter and increase material ballistic performance.
Xing Li   +3 more
doaj   +1 more source

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