Results 41 to 50 of about 54,060 (306)

Circular Polarization in two Active Repeating Fast Radio Bursts

open access: yes, 2022
Fast radio bursts (FRBs) are bright millisecond radio bursts at cosmological distances. Only a small fraction of FRBs apparently repeat. Polarization, a fundamental property of electromagnetic signals, often carries critical information about the ...
Feng, Yi   +7 more
core   +1 more source

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

open access: yesMolecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce   +11 more
wiley   +1 more source

The optical singularities of birefringent dichroic chiral crystals

open access: yes, 2003
Using a new formalism involving projection from the sphere of directions to the stereographic plane, and associated complex variables, explicit formulae are obtained for the two refractive indices and polarizations in optically anisotropic crystals that ...
Dennis, MR   +7 more
core   +1 more source

Optical circular polarization in quasars

open access: yes, 2018
We present new optical circular polarization measurements with typical uncertainties 3σ) circular polarization in two blazars with high linear polarization and discuss the implications of this result for quasar physics.
Hutsemékers, D.   +4 more
core   +2 more sources

Dispersion Analysis of Twist-Symmetric Dielectric Waveguides

open access: yesPhotonics, 2021
We propose a circular twist-symmetric dielectric waveguide that is polarization-selective. In the practical implementation of optical fibers, a selective circular polarization is more convenient than its linearly polarized counterpart where previous ...
Pilar Castillo-Tapia   +5 more
doaj   +1 more source

On the Circular Polarization of Pulsar Radiation

open access: yesAstrophysics and Space Science, 1998
11 pages ...
Lyubarskii, Y. E., Petrova, S. A.
openaire   +3 more sources

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

open access: yesMolecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source

A New Kind of Circular Polarization Leaky-Wave Antenna Based on Substrate Integrated Waveguide

open access: yesInternational Journal of Antennas and Propagation, 2015
A new kind of circular polarization leaky-wave antenna with N-shaped slots cut in the upper side of substrate integrated waveguide (SIW) is investigated and presented.
Chong Zhang   +4 more
doaj   +1 more source

First M87 Event Horizon Telescope Results. IX. Detection of Near-horizon Circular Polarization

open access: yesThe Astrophysical Journal Letters, 2023
Event Horizon Telescope (EHT) observations have revealed a bright ring of emission around the supermassive black hole at the center of the M87 galaxy. EHT images in linear polarization have further identified a coherent spiral pattern around the black ...
The Event Horizon Telescope Collaboration   +283 more
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

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