Results 71 to 80 of about 1,348,566 (296)
The Astronomical JournalThe MIRI Excesses Around Degenerates (MEAD) Survey is a Cycle 2 JWST program designed to image nearby white dwarfs with MIRI at 10 and 15 μ m. This survey targeted 56 white dwarfs within 25 pc to search for mid-infrared excesses, flux deficits from ...
Sabrina Poulsen +16 more
doaj +1 more source
Kinetics‐Controlled Architecture of Binder‐Free Organic Electrodes for Enhanced Ion Transport
Advanced Functional Materials, EarlyView.Pulse reverse electrodeposition controls nucleation and growth to create hierarchically porous Py‐derived oligomeric electrodes with enhanced ionic accessibility and reduced transport resistance. The resulting binder‐free architectures translate these transport advantages into practical sodium‐storage functionality.
Satendra Kumar +1 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Rapid microwave plasma torch engineering tunes crystal phases, carbon graphitization and oxygen‐vacancy defects in HfO2/C@C core‐shell fibrous membranes. Synergistic multi‐loss effects optimize impedance matching to deliver −65.75 dB reflection loss and a 7.37 GHz effective bandwidth for flexible electromagnetic wave absorption.
Qichao Ding +14 more
wiley +1 more source
A Search for Asymmetric Kinematic Components in Circumstellar Envelopes Using OH Main Line Masers
The Astrophysical JournalCircumstellar OH maser lines are useful for studying the dynamics of the circumstellar envelope (CSE) around evolved stars. This study aims to identify CSEs around cold stars, which exhibit deviations from the spherical expansion, by comparing the ...
Jia-Yong Xie +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Inspired by metal‐free carbonic anhydrases (CAs) that achieve efficient catalysis without metal cofactors, we herein report a sequence‐defined supramolecular peptoid platform that mimics metal‐free CAs and exhibits hydrolytic activity via a supramolecular assembly‐mediated proton‐transfer mechanism.
Progyateg Chakma +8 more
wiley +1 more source
Optical and Near-Infrared Imaging of Infrared-Excess Palomar-Green Quasars
The Astronomical Journal, 2001 Ground-based high spatial resolution (FWHM 0.46). In all cases, the host galaxies of the QSOs were detected, and most have discernible two-dimensional structure. The QSO host galaxies and the QSO nuclei are similar in magnitude at H band. H-band luminosities of the hosts range from 0.5–7.5 L*, with a mean of 2.3 L*, and are consistent with those ...
Jason A. Surace +2 more
openaire +3 more sources
A sample of 554 white dwarfs showing infrared excess from
Context. White dwarfs (WDs) are generally intrinsically faint in the infrared (IR). Excess emission in the infrared results from low-mass companions or dusty material, potentially linked to the on-going accretion of planetary material. Aims.
Cristina Madurga Favieres +3 more
core +1 more source
IRTF observations of white dwarfs with possible near-infrared excess [PDF]
, 2009 Near-infrared photometry and spectroscopy are obtained for a heterogeneous sample of nearby white dwarfs with possible excess flux as identified primarily in the Two Micron All Sky Survey.
Farihi, J
core
Electrical‐Programming‐Free Neural Crossbars Enabled by Photochemical Weight Patterning
Advanced Functional Materials, EarlyView.A flexible neural‐crossbar hardware system enabled by electrical‐programming‐free, mask‐defined, array‐parallel photochemical weight patterning is demonstrated. Trained weights are physically implemented across the array, supporting multilevel programming, bending‐stable operation and reconfiguration, substrate reuse, and low‐energy readout while ...
Hyo‐Bin Jang +5 more
wiley +1 more source
The Astrophysical JournalDetecting active galactic nuclei (AGNs) in dwarf galaxies is crucial for probing low-mass black hole demographics, yet remains intrinsically and observationally challenging because most diagnostics are calibrated for massive systems.
Yuan Xu +6 more
doaj +1 more source