Results 41 to 50 of about 371,957 (287)

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Shannon Wavelets Theory [PDF]

open access: yesMathematical Problems in Engineering, 2008
Shannon wavelets are studied together with their differential properties (known as connection coefficients). It is shown that the Shannon sampling theorem can be considered in a more general approach suitable for analyzing functions ranging in multifrequency bands. This generalization coincides with the Shannon wavelet reconstruction of L2(ℝ) functions.
openaire   +2 more sources

Oversampling of wavelet frames for real dilations [PDF]

open access: yes, 2012
We generalize the Second Oversampling Theorem for wavelet frames and dual wavelet frames from the setting of integer dilations to real dilations. We also study the relationship between dilation matrix oversampling of semi-orthogonal Parseval wavelet ...
Bownik, Marcin, Lemvig, Jakob
core   +3 more sources

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Robust Load Frequency Control in Cyber-Vulnerable Smart Grids with Renewable Integration

open access: yesEnergies
Frequency regulation (FR) constitutes a fundamental aspect of power system stability, particularly in the context of the growing integration of intermittent renewable energy sources (RES) and electric vehicles (EVs).
Rambaboo Singh   +3 more
doaj   +1 more source

UVB solar radiation climatology for Mexico

open access: yesGeofísica Internacional, 2013
La medición de la radiación solar ultravioleta B de banda (UVB) debe considerarse como una prioridad debido a las implicaciones de este tipo de radiación en la salud pública en todo el país (población nacional total, 108 millones), pero esto no se lleva ...
Mauro Valdés-Barrón   +5 more
doaj   +1 more source

A Novel Method to Estimate the Damage Severity Using Spatial Wavelets and Local Regularity Algorithm

open access: yesFracture and Structural Integrity, 2020
In the process of structural damage detection using continuous wavelet transform (CWT), the perturbation or damage is located by identifying the defects locally in the input signal data.
Arun Kumar K, Mallikarjuna Reddy D
doaj   +1 more source

Efecto de la incertidumbre de la política económica internacional sobre los mercados financieros latinoamericanos

open access: yesEstudios Gerenciales, 2022
El objetivo de este estudio fue analizar la relación entre los mercados financieros latinoamericanos y el índice de incertidumbre de política económica de Estados Unidos y China, a través de la coherencia de Wavelet.
Erik Muñoz Henríquez   +1 more
doaj   +1 more source

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

open access: yesMolecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat   +8 more
wiley   +1 more source

Wavelet design by means of multi-objective GAs for motor imagery EEG analysis [PDF]

open access: yes, 2011
Wavelet-based analysis has been broadly used in the study of brain-computer interfaces (BCI), but in most cases these wavelet functions have not been designed taking into account the requirements of this field.
Asensio-Cubero, J   +3 more
core  

Home - About - Disclaimer - Privacy