Results 61 to 70 of about 117,776 (291)

A Walk through AGN Country—For the Somewhat Initiated!

open access: yesGalaxies, 2023
Key issues in AGN and galaxy formation are discussed. Very successful Unified Models explain much of the variety of AGN with orientation effects; the ingredients are shadowing by a dusty “torus” and relativistic beaming.
Robert R. J. Antonucci
doaj   +1 more source

Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies [PDF]

open access: yesJournal of High Energy Astrophysics, 2022
E. Abdalla   +202 more
semanticscholar   +1 more source

Revisiting CN− Formation Mechanisms in Electron Collisions with Benzonitrile

open access: yesChemPhysChem, EarlyView.
This study explores negative ion formation via electron attachment, revealing CN− formation at 3.0 and 7–10 eV. Dissociation pathways are analyzed using G4(MP2) and CASPT2 calculations, highlighting the coupling between the π4* and σ* resonances critical for interstellar chemistry. Radiation‐induced processes in the aromatic cyano compound benzonitrile
Rodrigo Rodrigues   +8 more
wiley   +1 more source

The Euler’s harmonic holomorphic regenerative universe [PDF]

open access: yesINCAS Bulletin
The Cartesian dualism is a precursor to Euler’s complex theory, that completes the Descartes-Leibnitz monadic conception using the natural quanta (non-splitting e, π) along with their topological torsion in the form of dual isomorphism.
Horia DUMITRESCU   +2 more
doaj   +1 more source

Aspects of Quantum Gravity Phenomenology and Astrophysics

open access: yesUniverse, 2023
With the discovery of gravitational waves, the search for the quantum of gravity, the graviton, is imminent. We discuss the current status of the bounds on graviton mass from experiments as well as the theoretical understanding of these particles.
Arundhati Dasgupta   +1 more
doaj   +1 more source

Phenomenology, astrophysics and cosmology of theories with submillimeter dimensions and TeV scale quantum gravity [PDF]

open access: yes, 1998
We recently proposed a solution to the hierarchy problem not relying on low-energy supersymmetry or technicolor. Instead, the problem is nullified by bringing quantum gravity down to the TeV scale.
N. Arkani-Hamed, S. Dimopoulos, G. Dvali
semanticscholar   +1 more source

Metal‐Induced Tuning of Fullerene Reactivity: Application to Nucleophile Addition

open access: yesChemPhysChem, EarlyView.
A textbook case of how encapsulating an atom in a carbon cage can tune assembly reactivity based on partial charge distribution–exemplified by the classic nucleophilic attack. Endohedral metallofullerenes (EMFs) are a unique class of hybrid molecules formed by encapsulating metal atoms within carbon cages (fullerenes), giving rise to distinctive ...
Corentin Rossi   +3 more
wiley   +1 more source

Temperature‐Dependent Kinetics of Plasma‐Based CO2 Conversion: Interplay of Electron‐Driven and Thermal‐Driven Chemistry

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
The transformation of CO2 into chemical building blocks is essential for a net‐zero energy future. Plasma‐chemical processing offers promising potential to achieve this. Here, we explore a temperature‐dependent plasma‐chemical reaction mechanism, revealing a shift from electron‐driven to thermal‐driven CO2 conversion regimes.
Aswath Mohanan   +2 more
wiley   +1 more source

Literature Review Strategies: A Case of Current Applications of Artificial Intelligence in Science, Technology, Engineering and Mathematics Education

open access: yesFuture in Educational Research, EarlyView.
ABSTRACT Students and novice researchers in education struggle with conducting meaningful, thorough and efficient literature reviews. This challenge is particularly relevant today as the number of publications is increasing exponentially. Even with the assistance of artificial intelligence (AI), researchers must make crucial decisions that ...
Mohosina Jabin Toma   +1 more
wiley   +1 more source

Exploring the Effects of Reduced Gravitational Field Impacts on Convective Heat Transfer: A Comprehensive Review

open access: yesHeat Transfer, EarlyView.
ABSTRACT This review explores the impact of gravitational instability on convective heat transfer, integrating existing research results and theoretical models. Gravitational instability is vital in promoting or hindering convective actions in different systems, such as atmospheric events, ocean currents, and industrial processes.
Hossam A. Nabwey   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy