Results 41 to 50 of about 1,999 (143)

Rehabilitation guidelines after autograft anterior cruciate ligament reconstruction need more graft‐specific exercise recommendations—A scoping review

open access: yesKnee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose Autografts for anterior cruciate ligament reconstruction (ACLR) are primarily harvested from the quadriceps, patellar, and semitendinosus tendons. The purpose of this scoping review was to describe available recommendations for exercise‐based rehabilitation following primary ACLR with a quadriceps tendon (QT), semitendinosus tendon (ST)
Kristín Briem   +4 more
wiley   +1 more source

Discrete Chiral Ballistic Polariton Laser

open access: yesLaser &Photonics Reviews, EarlyView.
Planar microcavities in the strong light–matter coupling regime exhibit exciton‐polariton modes with a strong chiral response toward circularly polarized light. This feature is exploited alongside inherent spin‐orbit coupling of cavity light to generate giant discrete optical vortices in polygonal arrays of exciton‐polariton condensates.
Zuzanna Werner   +5 more
wiley   +1 more source

Kevlar/Basalt and Kevlar/Glass Intra‐Ply Reinforced Hybrid Composites: Influence of Basket Weave Fabric Structure on Thermal Properties, Flammability, and Impact Performance

open access: yesMacromolecular Materials and Engineering, EarlyView.
This research explores the effect of basket weave fabric structure and fiber combinations in hybrid composites, focusing on impact resistance, thermal stability, and flammability. The findings demonstrate that Kevlar‐glass laminates offer superior thermal stability and impact strength compared to Kevlar‐basalt laminates.
Mahdi Hosseini   +10 more
wiley   +1 more source

A method for optimizing a helicopter gun system lead computing optical sight through simulation [PDF]

open access: yes, 1996
This research explores the use of simulation to optimize a lead computing sight for a helicopter gun system. Basic research into air-to-air gunnery, air-to-air combat, and helicopter gun accuracy improvement programs involving lead computing sights was ...
Allen, Travis M.
core   +1 more source

Investigation of the Mechanical Behaviors of Waterborne Polyurethane: The Critical Influence of Hard Segment Content Over Various Strain Rates

open access: yesMacromolecular Materials and Engineering, EarlyView.
This study explores how hard segment content (HS) modulates waterborne polyureathane's (WPU's) dynamic mechanical properties under low/high strain rates. Increasing HS enhances hydrogen bonding and microphase separation, with abundant hard domains acting as physical crosslinks.
Mingping Zhou   +8 more
wiley   +1 more source

Elaboration of mathematical model of flight trajectory of material point in atmosphere [PDF]

open access: yes, 2018
In the article, the flight trajectory of a material point in the atmosphere is considered. For its calculation the Runge-Kutta method and the system of the equations of external ballistics are used.
A. E. Mayshev   +2 more
core   +1 more source

Mechanical performance of bio‐based fiber reinforced polymer composites: A review

open access: yesPolymer Composites, EarlyView.
Applications of bio‐based fiber reinforced polymer composites in various sectors. Abstract Natural fiber‐reinforced polymeric composites (NFRCs) offer a sustainable solution at the intersection of environmental consciousness and materials engineering. These composites address plastic pollution and industrial material demands by utilizing natural fibers
Daksh Shelly   +5 more
wiley   +1 more source

Capability of NOL ballistics ranges for obtaining sphere drag coefficient data [PDF]

open access: yes
Ballistic ranges for measuring drag coefficients of ...
Lyons, W. C., Jr.
core   +1 more source

Matrix‐Modified Aramid Fiber‐Reinforced Composites With Enhanced Out‐of‐Plane Properties for Advanced Structural Applications

open access: yesPolymer Composites, EarlyView.
Enhanced Aramid Composites via Epoxy Matrix Modification with GNP and MWCNT. ABSTRACT This study aims to increase out‐of‐plane mechanical properties of aramid‐reinforced composites via epoxy/nanoparticle mixtures containing different weight fractions (0.1, 0.2, and 0.3 wt.%) of carboxyl‐functionalized multi‐walled carbon nanotubes (COOH‐MWCNT ...
Serkan Bati, Yahya Hisman Celik
wiley   +1 more source

Effects of Tank Gun Structural Components on the First Shot Hit Probability [PDF]

open access: yes, 2018
Fire power for a main battle tank is one of the most important performance parameters like survivability and mobility. Fire power effectiveness is directly related to the first shot hit probability, performance of main gun, second armament, gun and ...
Dursun, Tolga   +2 more
core   +2 more sources

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