Results 41 to 50 of about 97,661 (176)

An exploratory, in‐field, multimodal assessment of cervical function in adults following to high‐altitude trekking with light backpack

open access: yesPhysiological Reports, Volume 14, Issue 16, August 2026.
This study investigates the impact of a high‐altitude expedition (1400 m to 5000 m) on cervical spine dynamics using an integrated approach: kinematics (IMU), surface electromyography (sEMG), and infrared (IR) thermography. The findings highlight a progressive increase in cervical range of motion (RoM) during flexion‐extension and lateral tilting ...
David Perpetuini   +5 more
wiley   +1 more source

A New Framework for Active Galactic Nucleus Accretion and Jet Feedback in Numerical Simulations

open access: yesThe Astrophysical Journal Supplement Series
Accurate modeling of active galactic nucleus (AGN) feedback, especially due to relativistic jets, is crucial for understanding the cool-core problem in galaxy clusters.
Ying-He Celeste Lü, Paul M. Ricker
doaj   +1 more source

Neurophysiological Differentiation of Conversion to Alzheimer's Disease: Longitudinal Changes in P300 Amplitude as an Indicator of Mild Cognitive Impairment Progression

open access: yesBrain and Behavior, Volume 16, Issue 7, July 2026.
Longitudinal EEG recordings showed reduced P300 amplitudes in mild cognitive impairment, with the lowest values observed in individuals who progressed to Alzheimer's disease. Central P300 measures demonstrated strong discriminative performance and may represent an accessible electrophysiological marker associated with disease progression.
Yağmur Özbek, Görsev G. Yener
wiley   +1 more source

Spherically Symmetric Accretion with Self-gravity: Analytical Formulae and Numerical Validation

open access: yesThe Astrophysical Journal
Spherically symmetric accretion incorporating self-gravity constitutes a three-point boundary value problem (TPBVP) governed by constraints at the outer boundary, sonic point, and accretor surface.
Cheng-Liang Jiao   +3 more
doaj   +1 more source

Jet Formation in 3D GRMHD Simulations of Bondi–Hoyle–Lyttleton Accretion

open access: yesThe Astrophysical Journal, 2023
A black hole (BH) traveling through a uniform, gaseous medium is described by Bondi–Hoyle–Lyttleton (BHL) accretion. If the medium is magnetized, then the black hole can produce relativistic outflows.
Nicholas Kaaz   +4 more
doaj   +1 more source

Soil Diversity and Climate: An Overview of Profile Data and Acquisition With the WoSIS Global Legacy Dataset

open access: yesEuropean Journal of Soil Science, Volume 77, Issue 4, July/August 2026.
ABSTRACT Soil profiles are the primary field evidence from which pedogenesis, soil classification and land‐use effects are interpreted, yet their availability remains uneven across climates and land‐cover contexts. Here, we analyse the World Soil Information Service (WoSIS) 2023 snapshot together with Copernicus Global Land Cover 2015 and the global ...
Calogero Schillaci   +33 more
wiley   +1 more source

Bridging Scales in Black Hole Accretion and Feedback: Magnetized Bondi Accretion in 3D GRMHD [PDF]

open access: yes
Fueling and feedback couple supermassive black holes (SMBHs) to their host galaxies across many orders of magnitude in spatial and temporal scales, making this problem notoriously challenging to simulate. We use a multi-zone computational method based on
Su, Kung-Yi   +6 more
core   +1 more source

A Unified Dark-matter-driven Relativistic Bondi Route to Black Hole Growth from Stellar to Supermassive Scales

open access: yesThe Astrophysical Journal Letters
Observations of luminous quasars at z  ≳ 7 reveal supermassive black holes (SMBHs) with inferred masses M _BH  ∼ 10 ^9 M _⊙ formed within the first ∼700 Myr of cosmic history.
Chian-Shu Chen, Feng-Li Lin
doaj   +1 more source

Fully analytical solutions for Bondi accretion in galaxies with a central Black Hole

open access: yes, 2020
The fully analytical solution for isothermal Bondi accretion on a black hole (MBH) at the center of JJ two-component Jaffe (1983) galaxy models is ...
Pellegrini S., Ciotti L.
core   +1 more source

Myths and methodologies: Exposure and measurements under normobaric hypoxia

open access: yesExperimental Physiology, Volume 111, Issue 7, Page 3130-3136, 1 July 2026.
Abstract Usually, settings of normobaric hypoxia underestimate the environmental hypoxia they are supposed to reproduce. The likely steady state of water vapour pressure within the human airways keeps the partial pressure of inspired oxygen very close to the assumed value, but this does not apply to the calculation of environmental hypoxia or ...
Danilo Bondi
wiley   +1 more source

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