Results 51 to 60 of about 4,183,562 (324)

Frequency Vectoralization and Frequency Birefringence

open access: yes, 2017
In view of momentum continuity at a temporal slab, it is shown that instantaneous switching of an isotropic medium to an anisotropic medium offers the incident frequency a directional property- a counterintuitive process which is called frequency vectoralization.
Akbarzadeh, Alireza   +2 more
openaire   +2 more sources

Signatures of odd-frequency correlations in the Josephson current of superconductor/ferromagnet hybrid junctions [PDF]

open access: yesPhys. Rev. B 92, 094509 (2015), 2015
Contacting a bilayer ferromagnet with a singlet even-frequency superconductor allows for the realization of an effective triplet odd-frequency superconductor. In this work, we investigate the Josephson effect between superconductors with different symmetries (e.g. odd- versus even-frequency). In particular, we study the supercurrent flowing between two
arxiv   +1 more source

Leveraging current insights on IL‐10‐producing dendritic cells for developing effective immunotherapeutic approaches

open access: yesFEBS Letters, EarlyView.
In vivo IL‐10 produced by tissue‐resident tolDC is involved in maintaining/inducing tolerance. Depending on the agent used for ex vivo tolDC generation, cells acquire common features but prime T cells towards anergy, FOXP3+ Tregs, or Tr1 cells according to the levels of IL‐10 produced. Ex vivo‐induced tolDC were administered to patients to re‐establish/
Konstantina Morali   +3 more
wiley   +1 more source

A circular switched parasitic array with directors for LoRa applications at 868 MHz

open access: yesElectronics Letters
The integration of directive elements into a circular switched parasitic array at 868 MHz is presented. The typical usage of reflective parasitic monopoles is supplemented with additional, shorter monopole elements which are positioned closer to the ...
Lukas Reinhold   +2 more
doaj   +1 more source

Size-Prior-Oriented Target Detection and Recognition for Automotive SAR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Automotive SAR target detection, which involves interpreting scenes or distinguishing different objects from SAR images, is a fundamental and critical problem in intelligent driving. An increasing number of methods have been proposed in airbone-SAR image
Zekang Fan   +5 more
doaj   +1 more source

High gain frequency scanning antenna using dumbbell‐shaped inclined slots and parallel plate waveguide polariser

open access: yesIET Microwaves, Antennas & Propagation, 2022
A high gain vertically polarised travelling‐wave frequency scanning array antenna fed by a meander rectangular waveguide is presented for Ku‐band operation.
Taher Badawy   +3 more
doaj   +1 more source

Effect of Build Orientation and Laser Power on Microwave Loss in Metal Additive Manufactured Components

open access: yesIEEE Access, 2021
The adoption of metal additive manufacturing into the production of passive microwave components is still in its relative infancy. However, it is of increasing interest due to the offer of geometrical design freedom and significant weight reduction.
Richard Gumbleton   +3 more
doaj   +1 more source

Parametric frequency mixing in the magneto-elastically driven FMR-oscillator [PDF]

open access: yesPhys. Rev. B 95, 060409 (2017), 2016
We demonstrate the nonlinear frequency conversion of ferromagnetic resonance (FMR) frequency by optically excited elastic waves in a thin metallic film on dielectric substrates. Time-resolved probing of the magnetization directly witnesses magneto-elastically driven second harmonic generation, sum- and difference frequency mixing from two distinct ...
arxiv   +1 more source

FoxO1 signaling in B cell malignancies and its therapeutic targeting

open access: yesFEBS Letters, EarlyView.
FoxO1 has context‐specific tumor suppressor or oncogenic character in myeloid and B cell malignancies. This includes tumor‐promoting properties such as stemness maintenance and DNA damage tolerance in acute leukemias, or regulation of cell proliferation and survival, or migration in mature B cell malignancies.
Krystof Hlavac   +3 more
wiley   +1 more source

Radius-to-frequency Mapping and FRB Frequency Drifts [PDF]

open access: yesThe Astrophysical Journal, 2020
Abstract We build a model of radius-to-frequency mapping in magnetospheres of neutron stars and apply it to frequency drifts observed in fast radio bursts (FRBs). We assume that an emission patch propagates along the dipolar magnetic field lines, producing coherent emission with frequency, direction, and polarization defined by the local
openaire   +3 more sources

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