Results 71 to 80 of about 6,757,521 (349)
DOA estimation for different frequency with different angles based on wideband co-prime array
The Journal of Engineering, 2019 Most of the signals received in the field of wireless communication, radar, and sonar are wideband, so there is an active research on wideband direction-of-arrival (DOA).
Geng Wang +5 more
doaj +1 more source
Air Force nickel-hydrogen flight experiment [PDF]
A gas leakage test, a capacity test, a charge retention test, and an electrolyte leakage test were among the tests conducted on a nickel hydrogen battery in a flight environment.
Miller, L.
core +1 more source
Advanced Engineering Materials, EarlyView.Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello +5 more
wiley +1 more source
Bifunctional Anticaries Ionic Liquids With Antibacterial And Remineralizing Effects
International Dental JournalAim or purpose: Effective caries control relies on reducing cariogenic bacteria and promoting remineralization. This study aimed to develop bifunctional anticaries ionic liquids (ILs) that integrate antibacterial and remineralizing properties.
Hongwei Chen +7 more
doaj +1 more source
Rate dependence of electrical and mechanical properties of conductive polymer nanocomposites
EPJ Web of Conferences, 2015 Conductive polymer nanocomposites with enhanced electrical and thermal properties show promise as an alternative solution for electronic materials. For example, electronic interconnect materials will have comparable electrical and thermal conductivity to
Foley J.R. +6 more
doaj +1 more source
The Effects of Pattern Loadings on Reinforced Concrete Floor Slabs [PDF]
, 1963 Reinforced Concrete Reserach CouncilOffice of the Chief of Engineers, U.S. Army.General Services Administration, Public Buildings ServiceHeadquarters, U.S. Air Force, Directorate of Civil Engineering.U.S. Navy, Engineering Division.
Jirsa, J.O., Siess, C.P., Sozen, M.A.
core
Rendering volumetric haptic shapes in mid-air using ultrasound:Proceedings of ACM SIGGRAPH Asia 2014 [PDF]
, 2014 We present a method for creating three-dimensional haptic shapes in mid-air using focused ultrasound. This approach applies the principles of acoustic radiation force, whereby the non-linear effects of sound produce forces on the skin which are strong ...
Carter, Tom +3 more
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Advanced Engineering Materials, EarlyView.Excellent combinations of strength and impact toughness are obtained in a bilayer composite of high‐strength carbide‐free bainitic (CFB) steel and high‐ductility twinning‐induced plasticity (TWIP) steel. The composite absorbs energy at small strains when the notch is placed on the TWIP side and at high strains when the notch is placed on the CFB side ...
Kendra Hawke +5 more
wiley +1 more source
Air Force Cambridge Research Laboratories balloon operations [PDF]
The establishment and functions of the AFCRL balloon operations facility are discussed. The types of research work conducted by the facility are defined. The facilities which support the balloon programs are described.
Danaher, T. J.
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Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation
Advanced Engineering Materials, EarlyView.This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley +1 more source