Results 111 to 120 of about 7,177 (282)

Hitting a bullet with a bullet: an analysis of colliding bullets using experimental data and explicit simulation methods [PDF]

Royal Society Open Science
A method to simultaneously fire and achieve a nose-to-nose collision of two bullets was created and compared to simulated results. This research focused on symmetric Taylor impact test techniques applied to 45-caliber Hornady 45177 full metal jacket (FMJ)
Destin Wilson Sandlin, Jason Cassibry
doaj   +1 more source

Recent Advances in Exosome‐Based Nanodelivery Systems for Traumatic Brain Injury Treatment

Med Research, EarlyView.
An overview of functional modification, therapeutic effects, molecular composition, and delivery strategies for exosomes. ABSTRACT Traumatic brain injury (TBI) is a highly heterogeneous neurological condition with extremely high rates of mortality and disability.
Jue Zhu, Weiquan Liao, Ziqi Lian, Mengdan Zhang, Chenxing Wang, Xingjia Zhu, Lin Zhang, Jian Chen, Zhichao Lu, Peipei Gong   +9 more
wiley   +1 more source

Prandial Effects on Intravoxel Incoherent Motion Quantification in the Liver

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the feasibility of detecting prandial (i.e., meal) induced changes in microvascular flow in the liver, including changes in the spatial distribution of flow velocities, using intravoxel incoherent motion (IVIM) MRI. Methods Thirteen (n = 13) healthy volunteers underwent two liver MR exams: one preprandial after fasting and ...
Gregory Simchick, A. M. K. Muntasir Shamim, Alexandra Anagnostopoulos, Kevin M. Johnson, Diego Hernando   +4 more
wiley   +1 more source

Stim‐CODE: PNS and CNS Constraint Optimized Diffusion‐Encoding for Neuroimaging on 200 mT/m Whole‐Body Gradients

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Ultra‐high‐performance whole‐body MRI gradients (Gmax$$ {G}_{\mathrm{max}} $$ ≥$$ \ge $$ 200mT/m, Smax$$ {S}_{\mathrm{max}} $$ ≥$$ \ge $$ 200 T/m/s) can reduce echo times (TE) in diffusion‐weighted imaging (DWI), improving SNR. However, full hardware utilization is limited by cardiac (CNS) and peripheral (PNS) nerve stimulation ...
Ariel J. Hannum, Michael Loecher, Qingping Chen, Eric Arbes, Kawin Setsompop, Maxim Zaitsev, Daniel B. Ennis   +6 more
wiley   +1 more source

Dynamic Performance Enhancement of a High‐Agility Hypersonic Mechanical System via a Learning‐Augmented Robust Control Architecture

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori, Seyed Hossein Sadati   +1 more
wiley   +1 more source

Asymmetric transferability of trait–environment relationships between native and exotic plant species in Singaporean forests differing in land‐use history

Oikos, EarlyView.
Functional traits allow ecologists to synthesise general rules of community assembly. In joint species distribution modelling, traits are increasingly used to explain species–environment relationships, with the intention of being able to generalise predictions to other species in other systems.
Hao Ran Lai, Kwek Yan Chong, Louise Neo, David A. Wardle, Peter A. Vesk   +4 more
wiley   +1 more source

Multiscale Modeling of Hole Damage Evolution During Dynamic Installation of Interference Bushings in CFRP

Polymer Composites, EarlyView.
Multiscale modeling for dynamic installatioin. ABSTRACT The dynamic installation of metal interference bushings has demonstrated significant potential for improving the mechanical performance of carbon fiber‐reinforced polymer (CFRP) joints. However, the underlying mechanisms governing the remaining life enhancement remain insufficiently understood ...
Yingjiang Guo, Zengqiang Cao, Dayou Ma, Lubin Huo, Andrea Manes   +4 more
wiley   +1 more source

Mechanical and Ballistic Performance of Composites Containing Aramid/EVA/Graphene‐Clay Nanostructured HDPE Laminates

Polymer Composites, EarlyView.
Ballistic tests using a novel composite configuraion. ABSTRACT Aramid fibers are extensively utilized in personal protective equipment owing to their lightweight and superior properties. This study proposes a novel composite structure comprising aramid fabric, EVA hotmelt films, and graphene‐clay nanostructured HDPE laminate, totalizing 20 repeated ...
Vagner Grison, Heitor Luiz Ornaghi Júnior, Rafael Rodrigues Dias, Iaci Pereira Miranda, Clarisse Rufino, Caio Bittencourt, Daiane Romanzini, Ademir José Zattera, Diego Piazza   +8 more
wiley   +1 more source

Design and Development of a Modular Ballistic Pendulum for High‐Impulse Measurement in Contact and Near‐Field Explosive Loading

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Measuring impulse from explosive charges in contact and near‐field configurations presents practical challenges due to wide variation in impulse magnitude. Ballistic pendula are widely used for impulse measurement, but many existing designs are limited to narrow operating envelopes or are poorly suited to repeated contact testing and tamped ...
R. Alford, R. Hazael, R. Critchley, L. Humphreys   +3 more
wiley   +1 more source

Strategy for One‐Step Optimization of Metal Oxide Passivating Contact Materials for Si Heterojunction Solar Cells through Growth Angle Variation

Small, EarlyView.
A one‐step oblique angle reactive sputtering approach enables simultaneous tuning of bulk and interfacial stoichiometry in a metal oxide/ silicon heterojunction. In case of vanadium oxides, growth angle variation controls the formation of stoichiometric SiO2, ternary SiOx(V) interlayer, and phase purity of vanadium oxide, considerably simplifying the ...
Aparajita Mandal, Alexis Franquet, Hans Hofsäss, Tapobrata Som   +3 more
wiley   +1 more source