Results 81 to 90 of about 2,243,701 (264)

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang   +3 more
wiley   +1 more source

Experimental Investigation of Thin-Walled UHPFRCC Modular Barrier for Blast and Ballistic Protection

open access: yesApplied Sciences, 2020
The static response of ballistic panels and also its resistance to blast and ballistic impact is investigated in the framework of this study. By connecting individual ballistic panels together, the protective barrier can be constructed.
M. Mára   +6 more
semanticscholar   +1 more source

Graphdiyne as a Hole‐Transport Channel in Carbon Nitride Heterojunctions for Synergistic CO2 Reduction and γ‐Butyrolactone Synthesis

open access: yesAngewandte Chemie, Volume 138, Issue 28, 6 July 2026.
A fully metal‐free heterojunction constructed from graphdiyne (GDY) and polymeric carbon nitride (PCN) enables efficient coupling of CO2 reduction and tetrahydrofuran oxidation. GDY serves as a hole‐transport channel, establishing a built‐in electric field that drives spatial charge separation. The optimized catalyst achieves near‐unity selectivity for
Xuan Zhang   +7 more
wiley   +2 more sources

The Use of Resistant Glass in Special Agricultural Machinery and the Logistic Support Depending on Operating Temperatures

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2017
The paper is concerned with quality assessment of bullet‑resistant glass in relation to ambient temperatures. The measurement results provided below may be drawn on in the field of logistics when transport, special as well as special agricultural ...
Tomáš Binar   +4 more
doaj   +1 more source

Crash Behavior of DP800–DP1000 Advanced High‐Strength Steel’s Dissimilar Resistance Spot Welded Joints Under Quasi‐static and High Strain Rates

open access: yessteel research international, EarlyView.
The high‐strain‐rate behavior of resistance spot‐welded DP800–DP1000 joints is investigated. Results show that microstructural gradients across BM–HAZ–FZ govern hardness, strain rate sensitivity, and failure modes. While strength increases with strain rate, energy absorption is controlled by ductility, with DP800–DP800 joints showing superior ...
Pankaj Shrivastava, Velaphi Msomi
wiley   +1 more source

Sharp force trauma analysis without animal bones: A proposal for sustainable and ethical bone proxies

open access: yesJournal of Forensic Sciences, EarlyView.
Abstract Sharp force trauma has been the leading cause of homicide in England and Wales for more than a decade. Experimental research on sharp force trauma frequently relies on animal bone as a substitute for human remains, yet their ethical acceptability and comparability to human bone remain contested.
Beth Lawrence   +2 more
wiley   +1 more source

Survivability of integrated fiber Bragg grating sensors in ballistic protection fabrics for high velocity impact testing

open access: yesOptical fiber technology (Print), 2020
This research demonstrates that fiber Bragg grating (FBG) strain sensors can survive and provide useful strain information when integrated into a woven fabric subjected to ballistic impact testing.
D. Hackney   +5 more
semanticscholar   +1 more source

The Dual‐Use Conundrum of the Lisbon Treaty Regarding Space Governance: Solutions Through International Legal Interpretation?

open access: yesGlobal Policy, EarlyView.
ABSTRACT An inherent divide features within the Lisbon Treaty between civilian and military/security competences; something previously more obvious via the ‘pillar system's’ separations. This division follows the Member States (MS) (natural) protection of their military/defence autonomy; their core sovereign powers.
Charlie J. P. Bennett
wiley   +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

A Thoracic Mechanism of Mild Traumatic Brain Injury Due to Blast Pressure Waves

open access: yes, 2008
The mechanisms by which blast pressure waves cause mild to moderate traumatic brain injury (mTBI) are an open question. Possibilities include acceleration of the head, direct passage of the blast wave via the cranium, and propagation of the blast wave to
Michael Courtney, Amy Courtney
core   +1 more source

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