Results 131 to 140 of about 42,367 (255)

Filling a Gap in Materials Mechanics: Nanoindentation at High Constant Strain Rates up to 105 s−1

Small, EarlyView.
A piezoelectric nanoindentation platform enables constant strain‐rate testing up to 105 s−1, extending experimental capabilities to extreme deformation regimes. Distinct hardness upturns are revealed across crystalline and amorphous materials, verified as intrinsic responses through quasi‐static reloading.
Lalith Kumar Bhaskar, Dipali Sonawane, Hendrik Holz, Jeongin Paeng, Peter Schweizer, Jing Rao, Bárbara Bellón, Damian Frey, Aloshious Lambai, Laszlo Pethö, Johann Michler, Jakob Schwiedrzik, Gaurav Mohanty, Gerhard Dehm, Rajaprakash Ramachandramoorthy   +14 more
wiley   +1 more source

Energy dissipation mechanism and ballistic characteristic optimization in foam sandwich panels against spherical projectile impact

Defence Technology
This study systematically examines the energy dissipation mechanisms and ballistic characteristics of foam sandwich panels (FSP) under high-velocity impact using the explicit non-linear finite element method.
Jianqiang Deng, Tao Liu, Liming Chen, Xin Pan, Jingzhe Wang, Shaowei Zhu, Weiguo Li   +6 more
doaj   +1 more source

Diffusion at constant speed in a model phase space

, 2002
We reconsider the problem of diffusion of particles at constant speed and present a generalization of the Telegrapher process to higher dimensional stochastic media ($d>1$), where the particle can move along $2^d$ directions.
Anantha Ramakrishna S., Boguñá M., Lemieux P. A., N. KUMAR, Porrà J. M., S. ANANTHA RAMAKRISHNA, van Kampen N. G.   +6 more
core   +3 more sources

Effect of Material and Structure of UHMWPE Body Armor on Ballistic Limit Velocity: Numerical Simulation

The material properties and structural characteristics of ballistic composites are crucial to their ballistic performance. Investigation for the influence of the material and structural parameters of UHMWPE body armor on anti-fragmentation penetration performance has been made by numerical simulation in this paper, with a numerical modeling simulating ...
Jiang Bian, Kaida Dai, Xiaojiang Lv, Zilu Huang, Guangrun Wu, Yuan Zhang   +5 more
openaire   +1 more source

Activatable smart contrast agents for photoacoustic imaging

Smart 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, Jihye Lee, Suyoung Park, Juyoung Yoon, Won Jong Kim, Chulhong Kim   +5 more
wiley   +1 more source

Towards improving the PF1B beamline McStas model through simulations of a beam characterization experiment

Journal of Applied Crystallography, EarlyView.
McStas simulations of a recent time‐of‐flight characterization of the PF1B instrument at the Institut Laue–Langevin show good agreement with the current beamline model, while also highlighting opportunities to refine some parameters of the simulation using the collected time‐of‐flight data as a benchmark.The PF1B instrument at the Institut Laue ...
Clément Desalme, Jason Pioquinto, Valentin Czamler, Stefan Baeßler, Kazimierz Bodek, Valery Nesvizhevsky, Dagmara Rozpędzik, Katharina Schreiner, Torsten Soldner   +8 more
wiley   +1 more source

The Unintended Consequences of German Deterrence

Global 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

Microspherules Formed by Lightning Strikes

Meteoritics &Planetary Science, EarlyView.
Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
wiley   +1 more source

How to make people do things with words

Noûs, EarlyView.
Abstract Sometimes we do what other people tell us to. A natural thought is that the motivation to act on an instruction comes about rationally as the result of interpreting an imperative and deciding to act on it; that is, by updating on information that gets mediated through belief‐desire reasoning.
Henry Schiller, Shaun Nichols
wiley   +1 more source

Isometric training at longer muscle–tendon complex lengths: A potential countermeasure to impaired neuro‐muscle–tendon function during space travel

Experimental Physiology, EarlyView.
Abstract Manned space exploration to distant destinations, including Mars, continues to be an aspiration of humankind. Space travel does, however, present many challenges to the body, amongst which adaptation to microgravity is perhaps the largest. For instance, both short and long manned spaceflight missions have shown substantial deleterious effects ...
Gerard McMahon, Andy Sanderson, Hans Degens   +2 more
wiley   +1 more source