Results 31 to 40 of about 71,216 (249)

Interacting coronae of two T Tauri stars: first observational evidence for solar-like helmet streamers [PDF]

open access: yes, 2007
Context {The young binary system V773 Tau A exhibits a persistent radio flaring activity that gradually increases from a level of a few mJy at apoastron to more than 100 mJy at periastron.
A. Boden   +32 more
core   +2 more sources

Perceptions of Safety and Support among High School Football Players Utilizing a Helmet Impact Detection System

open access: yesGraduate Medical Education Research Journal, 2019
Introduction: Concussions are common in high school football athletes and can have short and long-term health impacts. New football helmets furnished with accelerometers that detect rate and location of impact have recently emerged.
Chris Snyder   +4 more
doaj   +1 more source

Primary blast wave protection in combat helmet design: A historical comparison between present day and World War I.

open access: yesPLoS ONE, 2020
Since World War I, helmets have been used to protect the head in warfare, designed primarily for protection against artillery shrapnel. More recently, helmet requirements have included ballistic and blunt trauma protection, but neurotrauma from primary ...
Joost Op 't Eynde   +3 more
doaj   +1 more source

What Do Large Language Models Know About Materials?

open access: yesAdvanced Engineering Materials, EarlyView.
If large language models (LLMs) are to be used inside the material discovery and engineering process, they must be benchmarked for the accurateness of intrinsic material knowledge. The current work introduces 1) a reasoning process through the processing–structure–property–performance chain and 2) a tool for benchmarking knowledge of LLMs concerning ...
Adrian Ehrenhofer   +2 more
wiley   +1 more source

Electrode construction Patent [PDF]

open access: yes, 1970
Electrode attached to helmets for detecting low level signals from skin of living ...
Westbrook, R. M., Zuccaro, J. J.
core   +1 more source

Evaluating Energy Absorption Performance of Filled Lattice Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Maximum stress must be considered to robustly evaluate energy absorber designs. This approach was applied to compare all types of absorbers in a single Ashby diagram and determine the utility of filling lattice voids with a second material. High‐performance fillers can improve the performance of lattices that are limited by buckling or catastrophic ...
Christian Bonney   +2 more
wiley   +1 more source

D‐HAT: A Diatom‐Inspired Structure for a Helmet Concept Against Trauma

open access: yesAdvanced Intelligent Systems
Helmets are critical for minimizing the risk of traumatic brain injuries in road accidents and sports. Traditional designs feature a rigid outer shell and a deformable inner liner of foam for energy absorption.
Ludovico Musenich   +3 more
doaj   +1 more source

Fighters pilot helmet design for 5th generation aircraft [PDF]

open access: yes, 2013
Fighter pilots’ helmets have become more complex and heavier resulting in long term implications to pilots musculoskeletal systems as they fly and experience high g-load.
Little, Andrew   +2 more
core   +1 more source

Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites

open access: yesAdvanced Functional Materials, EarlyView.
Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles   +16 more
wiley   +1 more source

Terrain park injuries and risk factors in western Canadian resorts, 2008–2009 to 2017–2018: insights for risk management

open access: yesFrontiers in Sports and Active Living
Terrain parks (TP) are popular attractors to snowsport resorts for both skiers and snowboarders, however there is some concern about the risk of severe injury. TP risk management needs to balance the business case against the human cost of injury.
Tracey J. Dickson
doaj   +1 more source

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