Results 211 to 220 of about 14,479 (296)

Impact and Compressive Performance of 3D‐Printed PA6/Functionalized Graphene Nanoplatelet Sandwich Structures With Auxetic Cores

open access: yesPolymer Composites, Volume 47, Issue 18, Page 16425-16441, 20 September 2026.
Schematic of PA6/functionalized graphene nanoplatelet compounding and filament extrusion to 3D printing, sandwich panel fabrication, and mechanical characterization. ABSTRACT This study examines the impact and compressive behavior of additively manufactured polyamide 6 (PA6) nanocomposite sandwich panels reinforced with amine‐functionalized graphene ...
Russo Swart   +3 more
wiley   +1 more source

Fast Breakdowns Observed in the Initial Leaders of Two Energetic Compact Strokes

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract We have observed 1 fast positive breakdown (FPB) and 20 fast negative breakdowns (FNBs) for the first time in the initial leader of two energetic compact strokes (ECSs) using a broadband interferometer. It was found that the FPB propagated upward over a distance of 30 m with a speed of 1.2×107m/s $1.2\times {10}^{7}\mathrm{m}/\mathrm{s ...
Qingliu Yang   +5 more
wiley   +1 more source

Advancements in DOI-capable TOF-PET modules using a multi-channel high-frequency readout. [PDF]

open access: yesEJNMMI Phys
Terragni G   +5 more
europepmc   +1 more source

Impacts of Mid‐Latitude Ionospheric Dynamics on RF Applications During the November 2025 Superstorm Event

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study demonstrates the intriguing and complex interplay among auroral precipitation, enhanced TEC, density irregularities, and amplitude scintillations observed during the November 2025 superstorm. For the first time, we present observations of strong amplitude scintillation across continental United States (CONUS)—nearly from coast to ...
E. Yizengaw   +7 more
wiley   +1 more source

A High-Performance Self-Collimation SPECT for Small Animal Imaging. [PDF]

open access: yesIEEE Trans Med Imaging
Zhang D   +17 more
europepmc   +1 more source

Mid‐Infrared on‐Chip Dichroic Filters Enabled by Adiabatic Evolution and Dispersion‐Engineered Subwavelength Grating Waveguides

open access: yesNanophotonics, Volume 15, Issue 17, 11 September 2026.
An on‐chip mid‐infrared dichroic filter is demonstrated using an asymmetric directional coupler theory comprising a longitudinally segmented subwavelength‐grating waveguide and a strip waveguide. Suppressed slot‐like scattering loss and precise dispersion engineering yield flat‐top responses over 3.3–3.7 μm, ∼0.9 dB insertion loss, ∼1 dB/nm roll‐off ...
Yuheng Liu   +6 more
wiley   +1 more source

Identifying transcription factors controlling the basal expression of human MRP4 highlights a substantial role for Sp1

open access: yesFEBS Open Bio, Volume 16, Issue 9, Page 1825-1839, September 2026.
The MRP4 transporter exports several drugs and signaling molecules. Here, we identified key promoter elements regulating basal MRP4 expression. Using reporter assays, we defined a conserved region with essential Sp1 and contributory Ets sites, which controlled basal MRP4 expression.
Debora Singer   +7 more
wiley   +1 more source

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