Results 11 to 20 of about 65,793 (137)
Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain
Advanced Materials, EarlyView.A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha +14 more
wiley +1 more source
Helmet assembly and latch means therefor Patent [PDF]
, 1970 Transparent polycarbonate resin, shell helmet and latch design for high altitude and space ...
Jones, R. L.
core +1 more source
Origins of Graphite Resistivity: Decoupling Stacking Fault and Rotational Misorientation
Advanced Science, EarlyView.Interfacial dislocations critically influence interlayer transport in van der Waals (vdW) materials, yet quantifying their individual contributions remains challenging. We measure graphite's c‐axis resistivity and develop a decoupling strategy, revealing a resistivity ratio of ∼4507:74:1 for rotational misorientations, stacking faults, and AB stacking,
Weipeng Chen +6 more
wiley +1 more source
Focal plane transport assembly for the HEAO-B X-ray telescope [PDF]
, 1979 The High Energy Astronomy Observatory - Mission B (HEAO-B), an earth orbiting X-ray telescope facility capable of locating and imaging celestial X-ray sources within one second of arc in the celestial sphere, is considered.
Allard, P. D. +4 more
core +1 more source
Towards a CPT Invariant Quantum Field Theory on Elliptic de Sitter Space
, 2007 Consequences of Schr\"{o}dinger's antipodal identification on quantum field theory in de Sitter space are investigated. The elliptic $\mathbb{Z}_2$ identification provides observers with complete information.
Bousso R. +9 more
core +3 more sources
Field Cooled Annular Josephson Tunnel Junctions
, 2020 We investigate the physics of planar annular Josephson tunnel junctions quenched through their transition temperature in the presence of an external magnetic field.
Koshelets, Valery P. +2 more
core +1 more source
A Novel Milli‐Scale Magnetic Robot Exploiting Rotation for Controlled Magnetic Particles Release
Advanced Intelligent Systems, EarlyView.Delivering magnetic particles can become a game changer in minimally invasive medicine. To cope with this challenge, a magnetically actuated milli‐scale carrier leveraging rotation to perform on‐demand tunable release of magnetic particles across multiple release events is presented.
Giordano De Angelis +3 more
wiley +1 more source
From Empire to Aid: Analysing Persistence of Colonial Legacies in Foreign Aid to Africa
Journal of International Development, EarlyView.ABSTRACT For decades now, Western development agencies and donors have been castigated for their colonial biases in providing aid to Africa. It is well established that donors provide considerably more foreign aid to their former colonies relative to other countries.
Swetha Ramachandran
wiley +1 more source
Laser &Photonics Reviews, EarlyView.In randomly distributed Cu2O octahedron particles on a glass substrate, the absence of particles in certain areas generates a distinct “void‐particle induced interference” phenomenon. This effect results in notable reflection and transmission dichroism, characterized by two reflection peaks within the visible spectrum, but only a single transmission ...
Yaqun Han +5 more
wiley +1 more source
Successive Radii and Ball Operators in Generalized Minkowski Spaces [PDF]
, 2015 We investigate elementary properties of successive radii in generalized Minkowski spaces (that is, with respect to gauges), i.e., we measure the "size" of a given convex set in a finite-dimensional real vector space with respect to another convex set ...
Jahn, Thomas
core