Results 131 to 140 of about 256,877 (297)

On the Square Speed of Sound in High‐Energy Collisions: Range of Values and How to Understand It

open access: yesAdvances in High Energy Physics, Volume 2025, Issue 1, 2025.
After reviewing the sound speeds in various forms and conditions of matter, we investigate the sound speed of hadronic matter that has decoupled from the hot and dense system formed during high‐energy collisions. We comprehensively consider factors such as energy loss of the incident beam, rapidity shift of leading nucleons, and the Landau hydrodynamic
Ting-Ting Duan   +3 more
wiley   +1 more source

Impact of Carbonization Temperature on the Structure and Li Deposition Behavior of 3D Dual Metal Carbon Fibers

open access: yesSmall Structures, Volume 5, Issue 12, December 2024.
A detailed investigation of the structural evolution of 3D lithiophilic (Ag)–lithiophobic (Cu) carbon fibers at different carbonization temperatures and the corresponding correlation between the structural features and Li deposition is performed. Particular emphasis is placed on understanding how changes in the carbon structure, along with the size and
Dana Schmidt   +13 more
wiley   +1 more source

Perspectives for Cosmological Reionization From Future CMB and Radio Projects

open access: yesFrontiers in Astronomy and Space Sciences, 2018
In spite of the great recent results from the Planck satellite supporting cosmological reionization scenarios almost compatible with astrophysical models for the evolution of structure, galaxy and star formation, the full understanding of the ...
Tiziana Trombetti   +4 more
doaj   +1 more source

A Mystery of the Inconsistency Between Microwave Polarimetric Observations and Radiative Transfer Simulations

open access: yesGeophysical Research Letters, Volume 51, Issue 21, 16 November 2024.
Abstract A factor of 2 difference is found between microwave brightness temperature (TB) observations and simulations from vector radiative transfer models. A physical explanation of this difference is related to the calibration process. In principle, for the calibration of polarimetric instruments of a total power radiometer, the radiation should be ...
Ziqiang Zhu, Fuzhong Weng
wiley   +1 more source

Image Sensors and Photodetectors Based on Low‐Carbon Footprint Solution‐Processed Semiconductors

open access: yesAdvanced Sensor Research, Volume 3, Issue 11, November 2024.
This figure provides a comprehensive overview of fabrication techniques for solution‐processed photodetectors and image sensors, including inkjet printing and electrophoretic deposition. It also evaluates the carbon footprint of these methods compared to industry standards.
William Solari   +5 more
wiley   +1 more source

Can f(R) gravity relieve $$H_0$$ H 0 and $$\sigma _8$$ σ 8 tensions?

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
To investigate whether f(R) gravity can relieve current $$H_0$$ H 0 and $$\sigma _8$$ σ 8 tensions, we constrain the Hu-Sawicki f(R) gravity with Planck-2018 cosmic microwave background and redshift space distortions observations. We find that this model
Deng Wang
doaj   +1 more source

The lensing and temperature imprints of voids on the cosmic microwave background. [PDF]

open access: yes, 2016
We have searched for the signature of cosmic voids in the cosmic microwave background (CMB), in both the Planck temperature and lensing-convergence maps; voids should give decrements in both.
Yan-Chuan Cai   +5 more
semanticscholar   +1 more source

Constraints on Dark Matter Interactions with Standard Model Particles from Cosmic Microwave Background Spectral Distortions. [PDF]

open access: yesPhysical Review Letters, 2015
We propose a new method to constrain elastic scattering between dark matter (DM) and standard model particles in the early Universe. Direct or indirect thermal coupling of nonrelativistic DM with photons leads to a heat sink for the latter.
Yacine Ali-Haïmoud   +2 more
semanticscholar   +1 more source

Genetic Alterations in Chromatin Regulatory Genes in Upper Tract Urothelial Carcinoma and Urothelial Bladder Cancer

open access: yesCancer Medicine, Volume 13, Issue 21, November 2024.
ABSTRACT Purpose Upper tract urothelial carcinoma (UTUC) and urothelial carcinoma of the bladder (UCB) share histomorphological and therapeutic features but distinct epidemiologic and clinicopathologic characteristics. We examined alterations of chromatin regulatory genes in molecular subtypes, clonal relatedness, and T‐cell receptor (TCR) diversity in
Shuo Wang   +19 more
wiley   +1 more source

Analysis of cosmic microwave background radiation in the presence of Lorentz violation [PDF]

open access: yesarXiv, 2007
We examine the effects Lorentz violation on observations of cosmic microwave background radiation. In particular, we focus on changes in polarization caused by vacuum birefringence. We place stringent constraints on previously untested violations.
arxiv  

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