Results 121 to 130 of about 11,888,948 (254)

Alpha‐adrenergic mediated changes in blood pressure variability after hypoxia‐ischaemia in preterm fetal sheep

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Clinical detection of brain injury in preterm infantsremains a significant challenge. We investigated whether evolving brain injuryafter severe hypoxia‐ischaemia (HI) in chronically instrumented preterm fetalsheep is associated with dynamic changes in arterial blood pressure variability(BPV) and tested the hypothesis that post‐HI
Simerdeep K. Dhillon   +9 more
wiley   +1 more source

Theory of multivariable Bessel functions and elliptic modular functions

open access: yesLe Matematiche, 1998
The theory of multivariable Bessel functions is exploited to establish further links with the elliptic functions. The starting point of the present investigations is the Fourier expansion of the theta functions, which is used to derive an analogous ...
G. Dattoli, A. Torre, S. Lorenzutta
doaj  

Jointly Learned 3D Non‐Cartesian Sampling With Wave Encoding and Reconstruction for Neurovascular Phase Contrast MRI

open access: yesMagnetic Resonance in Medicine, Volume 95, Issue 5, Page 2554-2567, May 2026.
ABSTRACT Purpose To develop accelerated 3D phase contrast (PC) MRI using jointly learned wave encoding and reconstruction. Methods Pseudo‐fully sampled neurovascular 4D flow data (N = 40) and a simulation framework were used to learn phase encoding locations, wave readout parameters, and model‐based reconstruction network (MoDL) for a rapid 3D PC scan (
Chenwei Tang   +7 more
wiley   +1 more source

Repeatability of Rapid Human Cardiac Phosphorus MRSI (31P‐MRSI) Using Concentric Ring Trajectory Readouts at 7 T

open access: yesMagnetic Resonance in Medicine, Volume 95, Issue 5, Page 2508-2514, May 2026.
ABSTRACT Purpose PCr/ATP ratio is determined at 7 T typically using Fourier‐transform based magnetic resonance spectroscopic imaging sequences (FT‐MRSI). These sequences require acquisition times longer than desirable for inclusion in cardiac clinical trials. Concentric ring trajectory (CRT‐MRSI) has been described as an accelerated alternative k‐space
Ferenc E. Mózes   +8 more
wiley   +1 more source

ОБОБЩЕННЫЕ СДВИГИ БЕССЕЛЯ И НЕКОТОРЫЕ ОБРАТНЫЕ ТЕОРЕМЫ ТЕОРИИ ПРИБЛИЖЕНИЯ ФУНКЦИЙ НА ПОЛУПРЯМОЙ

open access: yesПроблемы анализа, 2007
The generalized translations of Bessel and the harmonic analysis of Bessel may be used for study some problems of approximations of functions on the half-line [0, +?] in the weighted Lp spaces.
ПЛАТОНОВ С. С.
doaj  

Influence of Variations in Gravity Wave Properties on Cirrus Ice Number Concentrations Produced by Homogeneous Freezing in the Tropical Tropopause Layer

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract In this study, we examine the impact of variations in gravity wave properties on the ice crystal number concentrations in the tropical tropopause layer (TTL). Analysis of quasi‐Lagrangian superpressure balloon measurements from the Stratéole‐2 campaign shows that high‐frequency waves dominate the occurrence of relatively large vertical wind ...
E. J. Jensen, M. Corcos, B. Kärcher
wiley   +1 more source

Stabilization of the Benzene Radical Trianion in an Inverse‐Sandwich Yttrium Complex

open access: yesAngewandte Chemie, Volume 138, Issue 13, 23 March 2026.
A new type of benzene anion state is born: The unprecedented benzene radical trianion embedded in an inverse‐sandwich yttrium complex was synthesized by a one‐electron chemical reduction of its benzene dianion precursor using potassium graphite in the presence of [2.2.2]‐cryptand.
Weiqing Mao   +5 more
wiley   +2 more sources

Real‐Time Monitoring of Enzyme Conformational Transitions During Substrate Inhibition via Nanopipettes

open access: yesChemElectroChem, Volume 13, Issue 7, 1 April 2026.
A label‐free nanopipette platform is used to monitor acetylcholinesterase (AChE) at the single‐molecule level during substrate inhibition. Distinct ionic current signatures reveal a nonmonotonic transition corresponding to mono‐ and bisubstrate binding, directly linking substrate occupancy to real‐time enzyme conformational expansion and compaction ...
Wen‐Long Chen   +7 more
wiley   +1 more source

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