Results 41 to 50 of about 93,124 (261)

Integral transforms characterized by convolution [PDF]

, 2022
Mateusz Krukowski
openalex   +1 more source

The role of lipid metabolism in neuronal senescence

FEBS Open Bio, EarlyView.
Disrupted lipid metabolism, through alterations in lipid species or lipid droplet accumulation, can drive neuronal senescence. However, lipid dyshomeostasis can also occur alongside neuronal senescence, further amplifying tissue damage. Delineating how lipid‐induced senescence emerges in neurons and glial cells, and how it contributes to ageing and ...
Dikaia Tsagkari, Eleftheria Panagiotidou, Nektarios Tavernarakis   +2 more
wiley   +1 more source

A fractional generalization of the Lauwerier formulation of the temperature field problem in oil strata

Revista Técnica de la Facultad de Ingeniería, 2010
In the present paper we give a fractional generalization of the Lauwerier formulation of the boundary value problem of the temperature field in oil strata.
Mridula Garg
doaj  

Lesion Location and Functional Connections Reveal Cognitive Impairment Networks in Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Cognitive impairment, fatigue, and depression are common in multiple sclerosis (MS), potentially due to disruption of regional functional connectivity caused by white matter (WM) lesions. We explored whether WM lesions functionally connected to specific brain regions contribute to these MS‐related manifestations.
Alessandro Franceschini, Paolo Preziosa, Paola Valsasina, Damiano Mistri, Monica Margoni, Federica Esposito, Massimo Filippi, Maria A. Rocca   +7 more
wiley   +1 more source

Necessery and Sufficient Condition for Extention of Convolution Semigroup [PDF]

, 2007
Let and be real - valued continuous functions and ( ptf,(qtg,p and q be cons-tants, where denotes a set of positive rational numbers. Convolution of +Q+Q()fpt, and , denoted by ()q,tg()()qtgp,∗tf, is defined by ()()()()∫−=∗tdvqvtgpvfqtgptf0,,,,, where
Mohd Jaffar, Mai Zurwatul Ahlam
core  

Convolution products for hypercomplex Fourier transforms

, 2013
Hypercomplex Fourier transforms are increasingly used in signal processing for the analysis of higher-dimensional signals such as color images. A main stumbling block for further applications, in particular concerning filter design in the Fourier domain,
Bujack, Roxana, De Bie, Hendrik, De Schepper, Nele, Scheuermann, Gerik   +3 more
core   +1 more source

Analysis of Time-Fractional Delay Partial Differential Equations Using a Local Radial Basis Function Method

Fractal and Fractional
Delay partial differential equations have significant applications in numerous fields, such as population dynamics, control systems, neuroscience, and epidemiology, where they are required to efficiently model the effects of past states on current system
Kamran, Kalsoom Athar, Zareen A. Khan, Salma Haque, Nabil Mlaiki   +4 more
doaj   +1 more source

CSF Levels of NPTX2 Are Associated With Less Brain Atrophy Over Time in Cognitively Unimpaired Individuals

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Neuronal pentraxin 2 (NPTX2) is a synaptic protein involved in synaptic plasticity and regulation of neuronal excitability. Lower baseline cerebrospinal fluid (CSF) NPTX2 levels have been shown to be associated with an earlier onset of mild cognitive impairment (MCI), a pre‐dementia syndrome, even after CSF Alzheimer's Disease (AD)
Juan P. Vazquez, Corinne Pettigrew, Yuxin Zhu, Claire Anderson, Guray Erus, Christos Davatzikos, Michael Miller, Abhay Moghekar, Sungtaek Oh, Chan‐Hyun Na, Marilyn Albert, Paul Worley, Anja Soldan   +12 more
wiley   +1 more source

Dispersive Bounds for the three-dimensional Schrodinger equation with almost critical potentials

, 2004
We prove a dispersive estimate for the time-independent Schrodinger operator H = -\Delta + V in three dimensions. The potential V(x) is assumed to lie in the intersection L^p(R^3) \cap L^q(R^3), p < 3/2 < q, and also to satisfy a generic zero-energy ...
Goldberg, Michael
core   +2 more sources

Calderón Strategies for the Convolution Quadrature Time-Domain Electric Field Integral Equation

IEEE Open Journal of Antennas and Propagation
In this work, we introduce new integral formulations based on the convolution quadrature method for the time-domain modeling of perfectly electrically conducting scatterers that overcome some of the most critical issues of the standard schemes based on ...
Pierrick Cordel, Alexandre Dely, Adrien Merlini, Francesco P. Andriulli   +3 more
doaj   +1 more source