Results 81 to 90 of about 3,543 (266)

Unveiling Bubble Dynamics of Proton Exchange Membrane Water Electrolysis at Elevated Temperatures

EcoEnergy, EarlyView.
This work directly visualizes bubble dynamics in a proton‐exchange membrane water electrolyzer operated at temperatures up to 120°C and pressures up to 100 bar. Elevated‐temperature operation beyond the atmospheric boiling point markedly reduces bubble coverage, leading to lower bubble‐related voltage losses and enhancing cell performance.
Andre Chambers, Muhammad Yousuf, Mengran Li, Glen Farivar, Michael J. Brear   +4 more
wiley   +1 more source

A New Way to Discover Strong Gravitational Lenses: Pairwise Spectroscopic Search from DESI DR1

The Astrophysical Journal Supplement Series
We present a new method to search for strong gravitational-lensing systems by pairing spectra that are close together on the sky in a spectroscopic survey. We visually inspect 26,621 spectra in the Dark Energy Spectroscopic Instrument (DESI) Data Release
Yuan-Ming Hsu, Xiaosheng Huang, Christopher J. Storfer, Jose Carlos Inchausti, David Schlegel, John Moustakas, J. Aguilar, S. Ahlen, A. Anand, S. Bailey, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, A. Cuceu, A. de la Macorra, J. Della Costa, Arjun Dey, Biprateep Dey, P. Doel, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, D. Huterer, R. Joyce, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin, O. Lahav, M. Landriau, L. Le Guillou, M. Manera, A. Meisner, R. Miquel, S. Nadathur, N. Palanque-Delabrouille, W. J. Percival, F. Prada, I. Pérez-Ràfols, G. Rossi, E. Sanchez, M. Schubnell, J. Silber, D. Sprayberry, G. Tarlé, B. A. Weaver, R. Zhou, H. Zou, (DESI Collaboration)   +50 more
doaj   +1 more source

Velocity effects on second order contributions to gravitational frequency shift by a moving Kerr–Newman black hole

European Physical Journal C: Particles and Fields, 2019
The significance of the radial velocity effects on the leading-order gravitational frequency shift in some special cases was reported recently. This paper investigates the gravitational shift of frequency of light propagating in the equatorial plane of a
Guansheng He, Chaohong Pan, Wenbin Lin
doaj   +1 more source

Closing the Loop in Agrivoltaics: A Radiative Cooling Coating for Synergistic Self‐Cleaning and Water Harvesting

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A nanostructured photonic‐thermal coating enables radiative‐cooling‐induced condensation and water harvesting, establishing a self‐sustaining agrivoltaics microclimate loop that transforms PV panels into active climate regulators. The integration of photovoltaic (PV) panels into agricultural landscapes (i.e., agrivoltaics) offers a promising path for ...
Saichao Dang, Abdul Rahim Siddiqui, Murali Gedda, Yuxuan Huang, Shakeel Ahmad, Jehad K. El‐Demellawi, Dan Daniel, Osman M. Bakr, Stefaan De Wolf, Hussam Qasem, Husam N. Alshareef, Qiaoqiang Gan   +11 more
wiley   +1 more source

Learning Rocking Dynamics From Sparse Shake‐Table Data With Interpretable Physics‐Informed Neural Networks

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT We present a hybrid interpretable Physics‐Informed Neural Network Long‐Short Term Memory (Hybrid PINN LSTM) framework for predicting the seismic response of rocking blocks. Existing analytical models rely on uncertain idealizations, while purely data‐driven and machine‐learning approaches lack physical consistency and interpretability.
Shirley Shen, Christian Málaga‐Chuquitaype   +1 more
wiley   +1 more source

microJAX: A Differentiable Framework for Microlensing Modeling with GPU-accelerated Image-centered Ray Shooting

The Astrophysical Journal
We introduce microJAX , the first fully differentiable implementation of the image-centered ray shooting algorithm for gravitational microlensing. Built on JAX and its XLA just-in-time compiler, microJAX exploits GPU parallelism while providing exact ...
Shota Miyazaki, Hajime Kawahara
doaj   +1 more source

Materials and Music: Selective Imperfection as a Generative Framework for Analysis, Creativity and Discovery

Interdisciplinary Materials, EarlyView.
Vibrations in matter, from spider webs to molecules, water to flames, share a grammar with music. We propose that creativity emerges when constraints force expansion beyond existing possibilities. Selective imperfection restores balance, enabling invention.
Markus J. Buehler
wiley   +1 more source

Cosmological Gravitational Lens Equation [PDF]

Progress of Theoretical Physics, 1993
Based on the geometric optics in curved spacetime, we investigate the validity and limitation of the cosmological gravitational lens equation in detail. We first review the conventional derivation of the lens equation which relies on an intuitive construction of the lens geometry, and point out ambiguities in the resulting formula when applied to ...
openaire   +1 more source

Sequelae of child maltreatment: Umbrella synthesis of 148 meta‐analyses on the mental health correlates

JCPP Advances, EarlyView.
Our umbrella synthesis found strong, often equivalent, associations between child maltreatment and all examined mental health difficulties. Different types of maltreatment appear to have comparably negative effects on mental health. If replicated, these findings may cause us to reconsider conventional wisdom that suggests some forms of CM are less ...
Barry Coughlan, Robbie Duschinsky, Marian J. Bakermans‐Kranenburg, Lianne Bakkum, Guy C. M. Skinner, Alfred Markham, Helen Beckwith, Marinus H. van Ijzendoorn   +7 more
wiley   +1 more source

Periglacial Puzzles: Unravelling Environmental Controls on Alpine Solifluction Lobe Dimensions and Shape

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Freeze–thaw processes cause periglacial creep (otherwise known as solifluction) which forms solifluction lobes. These are lobate features characterized by a steep riser (front) and a smooth tread (body). Despite the widespread occurrence of these lobes, the controls on their morphometry remain poorly understood. Research into solifluction lobe
Jil S. van Etten, Jana Eichel, Daniel Draebing   +2 more
wiley   +1 more source