Results 21 to 30 of about 1,495 (192)
Data‐Driven Review on Aerogels and Polymeric Aerogels
Angewandte Chemie International Edition, Accepted Article.Thoroughly data‐driven review on chemistry–properties–applications of aerogels is provided. Aerogel is a category of solid materials having homogeneous, highly porous nanostructures. Unique physicochemical properties of aerogels have attracted much attention in wide fields due to their potentials for energy/environmental issues in the 21st century ...
Satoru Takeshita +2 more
wiley +1 more source
Angewandte Chemie International Edition, Accepted Article.We describe the identification of an active Ti(salen)‐catalyst for the radical arylation of epoxides by a CV study of mechanism‐based predictors, such as the redox potentials of the complexes and their EqCr‐equilibria, for the success of catalysis. Surprisingly, the by far most active catalyst features an uncommon tetrasubstituted ligand backbone that ...
Andreas Gansäuer +6 more
wiley +1 more source
Te Vacancy‐Driven Anomalous Transport in ZrTe5 and HfTe5
Advanced Physics Research, EarlyView.Less is more! Recent discoveries in topological quantum materials have rekindled excitement for direct observation of quantum anomalies in a condensed matter physics laboratory, which is historically intractable in particle and cosmological physics. Using atomistic modeling this study sheds light on the source of the anomalous transport properties that
Elizabeth A. Peterson +2 more
wiley +1 more source
A Multifaceted Spatial Analysis of Tomb Distribution in Blemmyan Berenike (Eastern Desert of Egypt)
Archaeological Prospection, EarlyView.ABSTRACT This study examines the spatial and visual organisation of tombs in the post–Roman Berenike located in Egypt's Eastern Desert. Archaeological surveys, remote sensing, geophysical methods, excavations and GIS‐based analyses are used for a comprehensive understanding of the spatial patterns and cultural significance behind the positions and ...
Mariusz Gwiazda +4 more
wiley +1 more source
Stellar Physics and General Relativity
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT The general theory of relativity is currently established as the most precise theory of gravity supported by observations, and its application is diverse ranging from astronomy to cosmology, while its application to astrophysics has been restricted only to compact stars due to the assumption that the Newtonian approximation is sufficient for ...
Shuichi Yokoyama
wiley +1 more source
Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge +3 more
wiley +1 more source
Dark Energy From the Gravitational Wave Background With Scalar Field Dark Matter
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Recent observational results, such as those from pulsar timing arrays (PTA), suggest a low‐frequency Gravitational Wave Background (GWB) permeates our universe. This opens the possibility that gravitational waves could span a broader spectrum, potentially impacting cosmological scales.
Edwin L. Pérez‐Ochoa, Tonatiuh Matos
wiley +1 more source
COSMOLOGICAL OBSERVATIONS AND BACKREACTION [PDF]
, 2014 Since the very beginning the Friedmann-Robertson-Walker metric has played one of the most important roles in developing cosmology. The underlying assumptions of maximal symmetry have simplified our general view of the Universe but recent developments in observational cosmology, like the discovery of cosmic acceleration, have demonstrated that a more ...
openaire +1 more source
Observational consequences of quantum cosmology [PDF]
Nuclear Physics B, 2007 12 pages, harvmac; refs.
openaire +2 more sources
Knowledge acquisition in science and the blurred boundary between perception and cognition
British Educational Research Journal, EarlyView.Abstract This paper provides a critical and detailed study of what researchers in the fields of contemporary cognition and neuroscience have revealed about the blurred boundary between perception and cognition. We set out the arguments with a view to what researchers and teachers should now consider regarding the subtleties of their interrelationship ...
T. G. K. Bryce, E. J. Blown
wiley +1 more source