Results 101 to 110 of about 207,262 (276)

Impact of the initial disk mass function on the disk fraction

, 2015
The disk fraction, the percentage of stars with disks in a young cluster, is widely used to investigate the lifetime of the protoplanetary disk, which can impose an important constraint on the planet formation mechanism.
Ohsawa, Ryou, Onaka, Takashi, Yasui, Chikako   +2 more
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Approximate Inference for Constructing Astronomical Catalogs from Images

, 2019
We present a new, fully generative model for constructing astronomical catalogs from optical telescope image sets. Each pixel intensity is treated as a random variable with parameters that depend on the latent properties of stars and galaxies.
Adams, Ryan P., McAuliffe, Jon D., Miller, Andrew C., Prabhat, Regier, Jeffrey, Schlegel, David   +5 more
core   +1 more source

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

Advanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi, Jamal Alhourani, Yury Gogotsi, Mohammad H. Zarifi   +3 more
wiley   +1 more source

Active Galactic Nuclei at All Wavelengths and from All Angles

Frontiers in Astronomy and Space Sciences, 2017
AGN are quite unique astronomical sources emitting over more than 20 orders of magnitude in frequency, with different electromagnetic bands providing windows on different sub-structures and their physics.
Paolo Padovani
doaj   +1 more source

High‐Transmission Mid‐Infrared Bandpass Filters using Hybrid Metal‐Dielectric Metasurfaces for CO2 Sensing

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This article presents a hybrid metal‐dielectric metasurface in transmission mode for mid‐infrared (MIR) spectroscopy. Composed of germanium on aluminium cylinders atop a calcium fluoride substrate, the metasurface achieves 80% transmission efficiency at λ = 2.6 µm with a narrow full‐width‐half‐maximum of 0.4 µm.
Amr Soliman, C Williams, Richard Hopper, Florin Udrea, Haider Butt, Timothy D. Wilkinson   +5 more
wiley   +1 more source

Shadows of rotating Hayward–de Sitter black holes with astrometric observables

European Physical Journal C: Particles and Fields, 2020
Motivated by recent work on rotating black hole shadow (Chang and Zhu in Phys Rev D 101:084029, 2020), we investigate the shadow behaviours of rotating Hayward–de Sitter black hole for static observers at a finite distance in terms of astronomical ...
Peng-Zhang He, Qi-Qi Fan, Hao-Ran Zhang, Jian-Bo Deng   +3 more
doaj   +1 more source

Improved Disorder Resilience in Small‐Footprint Photonic Cavities with Periodicity Breaking

Advanced Optical Materials, EarlyView.
Compact photonic crystal cavities with engineered aperiodicity are demonstrated to sustain high quality factormodes and enhanced reproducibility within a minimal footprint. Combining numerical optimization and near‐field measurements, the study reveals how controlled periodicity breaking improves disorder resilience, offering a robust and scalable ...
Nicoletta Granchi, Camilla Gonzini, Matteo Lodde, Gabriele Calusi, René P. J. van Veldhoven, Andrea Fiore, Guillermo Arregui, Francesca Intonti   +7 more
wiley   +1 more source

Reduced Solar Quadrupole Moment Compensates for Lack of Asteroids in Long-term Solar System Integrations

The Astronomical Journal
State-of-the-art long-term solar system integrations include several second order effects such as the Sun’s quadrupole moment J _2 and a contribution from asteroids (plus the Moon and general relativity).
Richard E. Zeebe, Ilja J. Kocken
doaj   +1 more source

Study of conceptual metaphors of Russian astronomical terms

Modern scientist
настоящая научная работа посвящена изучению понятийных метафор русских астрономических терминов. Астрономия, как наука, обладает богатым набором терминологии, которая часто отражает метафорическое мышление и представления людей о космосе. В научной работе исследуются ключевые смысловые метафоры, применяемые в русской астрономической лексике, и ...
openaire   +1 more source