Results 101 to 110 of about 166,028,825 (289)
ACT data and positive running of the spectral index for scalar theory and modified gravity
Physics Letters BIn this work we address the possibility of having a positive running of the spectral index in inflationary theories. The recent ACT data indicate mildly that the running of the spectral index might be positive, and several other physical indications ...
S.D. Odintsov, V.K. Oikonomou
doaj +1 more source
Modulation of miR‐23b Wnt/β‐catenin Axis Strengthens Endothelial Barrier Properties
Advanced Science, EarlyView.Early blood‐brain barrier (BBB) disruption contributes to stroke and CNS disease pathology. miR‐23b was identified as a regulator of BBB integrity in brain endothelial cells. Inhibition of miR‐23b enhanced barrier‐associated properties, promoted repair‐related signaling, and reduced BBB leakage in experimental stroke models, supporting further ...
Victor Anthony Martinez +16 more
wiley +1 more source
Inconsistency of modified gravity in cosmology
Physics Letters BWe show that there is a fundamental flaw in the application of modified gravity theories in cosmology, taking f(R) gravity as a paradigmatic example. This theory contains a scalar degree of freedom that couples to the matter stress-energy tensor but not ...
Pablo A. Cano
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EPJ Web of Conferences, 2018 The current accelerating expansion of the Universe is explained either by dark energy or by modified gravity theories. Both of them can explain exactly the same background evolution of the Universe, however this degeneracy may be broken when the ...
Hyun Young-Hwan +2 more
doaj +1 more source
Gravity's rainbow: A bridge between LQC and DSR
Physics Letters B, 2017 The doubly special relativity (DSR) theories are constructed in order to take into account an observer-independent length scale in special relativity framework. Gravity's rainbow is a simple generalization of DSR theories to incorporate gravity.
M.A. Gorji, K. Nozari, B. Vakili
doaj +1 more source
Ethical Precision in Nanoscale Brain Interfacing
Advanced Science, EarlyView.As brain interfaces approach the nanoscale, precision no longer only measures—it knows, predicts, and potentially reshapes the mind. This work argues that traditional ethics fails under such conditions and proposes a shift toward continuous, operation‐based governance using the recovery–discovery framework to track, constrain, and responsibly steer ...
Guilherme Wood
wiley +1 more source
Modified Theories of Gravity [PDF]
, 2020 Ali Chamseddine (Advisor); Constantin Bachas (Chair, directeur de recherche, CNRS-ENS, Paris); Prof. Viatcheslav Mukhanov (Ludwig Maximilian University of Munich); Jihad Touma (AUB); Mounib El Eid (AUB)This dissertation is composed of three parts.
Saghir, Chireen Ahmad
core
Interacting Parallel Fluidic Hysterons
Advanced Science, EarlyView.The parallel coupling of fluidic hysterons is introduced, establishing advanced functionalities in inflatable soft systems. A pressure–volume framework reveals how preset volumes Δv∗${\Delta }v^*$ tune nonlinear interactions between hysterons and actuation sequences without changing architecture. Experiments validate the predictions, opening new routes
Katrien Stinissen +2 more
wiley +1 more source
Time delay predictions in a modified gravity theory [PDF]
Classical and Quantum Gravity, 2006 5 pages, LaTex file, no figures.
openaire +2 more sources
Advanced Science, EarlyView.Wearable‐derived diurnal alignment between physical activity and device temperature, decomposed into 24 h coupling strength (M24), phase deviation (D24), and 12 h harmonic magnitude (M12), is examined in approximately 90,000 UK Biobank participants.
Han Chen +6 more
wiley +1 more source