Results 161 to 170 of about 9,812 (256)

On the Possibility of Searching for Quarks by Radio-Astronomical Techniques

The Astrophysical Journal, 1967
G. G. Fazio, B. Zuckerman
openaire   +1 more source

Optical‐to‐Microcomb Stability Transfer for Ultrastable Timing and Microwave/Millimeter‐Wave Generation

Laser &Photonics Reviews, EarlyView.
This work demonstrates a high‐fidelity stability transfer from an optical reference to a high‐repetition‐rate microcomb using a mode‐locked laser bridge. By employing electro‐optic sampling timing detection, femtosecond‐level synchronization and 10−18‐level fractional frequency stability are achieved.
Changmin Ahn, Junyong Choi, Daewon Suk, Hansuek Lee, Jungwon Kim   +4 more
wiley   +1 more source

High-Precision Time Synchronization and Autonomous Maintenance for LEO Satellite Constellations Based on High-Stability Crystal Oscillators. [PDF]

Sensors (Basel)
Mu L, Hu X, Wu M, Li J.
europepmc   +1 more source

Revealing the Resonant Physics of Open Photonic Time Crystals

Laser &Photonics Reviews, EarlyView.
ABSTRACT Photonic time crystals (PTCs) are media whose permittivity is modulated periodically in time, enabling momentum bandgaps and parametric amplification of light. Their realization at the nanoscale can revolutionize the study of light‐matter interactions.
Adrià Canós Valero, Sergei Gladyshev, David Globosits, Stefan Rotter, Egor A. Muljarov, Thomas Weiss   +5 more
wiley   +1 more source

Temperature Dependence of Electronic Transport Mechanisms in rGO-Based Photodetectors. [PDF]

Nanomaterials (Basel)
Bonavolontà C, Vettoliere A, Ruggiero B, Granata C, Valentino M.   +4 more
europepmc   +1 more source

Four Directions, One Solution: Enabling Rapid Diffusion Tensor MRI for Ultra‐Low Field Using Deep Learning

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose This study revisits the tetrahedral encoding strategy originally proposed to accelerate Diffusion Tensor Magnetic Resonance Imaging (DT‐MRI) by reducing the requisite number of diffusion‐weighted measurements to four. We examine its practical limitations and explore how artificial intelligence (AI) can extend its utility. Specifically,
Joshua Mawuli Ametepe, James Gholam, Leandro Beltrachini, Mara Cercignani, Derek Kenton Jones   +4 more
wiley   +1 more source

Achieving GPT-4o level performance in astronomy with a specialized 8B-parameter large language model. [PDF]

Sci Rep
de Haan T, Ting YS, Ghosal T, Nguyen TD, Accomazzi A, Wells A, Ramachandra N, Pan R, Sun Z.   +8 more
europepmc   +1 more source

Patterns of wild meat and other protein consumption in the periphery of Salonga National Park, Democratic Republic of the Congo

People and Nature, EarlyView.
Abstract In Central Africa, human activities are severely impacting terrestrial and aquatic wildlife, threatening the food security of millions of people. Accordingly, sustainable use of wildlife is crucial for the nutrition and livelihoods of many rural communities in the region.
Zolo Admettons, Mattia Bessone, Josué Ausse Baraka, Josué Engombe Botomia, Espérance Miezi, Bénédicte Nsilu, Jonathan Nkamisha Mukole, Michel Opelele Omeno, Jean Semeki Ngabinzeke, Barbara Fruth   +9 more
wiley   +1 more source

High-resolution in situ imaging reveals size-specific moonlight responses in zooplankton diel vertical migration. [PDF]

Sci Rep
Dickerson AL, Jechow A, Nößler M, Walles TJW, Berger SA, Hölker F, Nejstgaard JC.   +6 more
europepmc   +1 more source

The Need for Fundamental Photovoltaics Research to Ensure Energy Security

Progress in Photovoltaics: Research and Applications, EarlyView.
The center of this graphic focuses on the core of this paper—that fundamental research is central to the continued development of the photovoltaic (PV) industry. To the left, we have depictions of what is being studied—PV materials, PV cell structures, and PV module structures.
Rebecca Saive, Gavin Conibeer, Lisanne M. Einhaus, Jean‐François Guillemoles, Koami Soulemane Hayibo, Karin Hinzer, Jacob J. Krich, Martha Lenio, Michael P. Nielsen, Frederick U. Nitta, Ian R. Sellers, Daniel Suchet, Eric Tervo, Tom Tiedje, Jelle Westerhof   +14 more
wiley   +1 more source