Results 21 to 30 of about 14,248 (263)

Selective Rapid Eye Movement Sleep Deprivation Affects Cell Size and Number in Kitten Locus Coeruleus

open access: yesFrontiers in Neurology, 2012
Cells in the locus coeruleus (LC) constitute the sole source of norepinephrine (NE) in the brain, and change their discharge rates according to vigilance state.
James P Shaffery   +3 more
doaj   +1 more source

Determination of Anti Colon Cancer Drug, Irinotecan by Fast Fourier Transforms Continuous Cyclic Voltammetry

open access: yesInternational Journal of Electrochemical Science, 2009
In this work a novel method for the determination of irinotecan, an anti colon cancer drug, in flow-injection systems has been developed. The fast Fourier transform continuous cyclic voltammetry (FFTCV) at gold microelectrode in flowing solution system ...
Parviz Norouzi   +3 more
doaj   +1 more source

REVISED FAST FOURIER TRANSFORM

open access: yesRadio Electronics, Computer Science, Control, 2014
The problem of realisation of the Discrete Fourier Transform in on-line is analysed because of non-efficient consuming a time for a new recalculation of spectrum samples if one discrete-time signal sample or even some small portion of samples in period are replaced by new sample or by new samples, respectively.
openaire   +4 more sources

Dataset of quantitative structured office measurements of movements in the extremities

open access: yesData in Brief, 2020
A low-cost quantitative structured office measurement of movements in the extremities of people with Parkinson's disease [1,2] was performed on people with Parkinson's disease, multiple system atrophy, and age-matched healthy volunteers.
Timothy P. Harrigan   +13 more
doaj   +1 more source

Comparative structural vibration analysis of machinery and GFRP with Al7075

open access: yesMATEC Web of Conferences, 2018
The current scenario of the industries is that the major losses in efficiency of a machine are due to vibration and friction. To reduce the detrimental effects of vibration we need to decrease the frequency and amplitude of vibration or completely ...
Vinoth Kumar K.   +4 more
doaj   +2 more sources

A Fast Hybrid Pressure-Correction Algorithm for Simulating Incompressible Flows by Projection Methods

open access: yesAlgorithms, 2023
To enforce the conservation of mass principle, a pressure Poisson equation arises in the numerical solution of incompressible fluid flow using the pressure-based segregated algorithms such as projection methods.
Jiannong Fang
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

A computational insight into cardiac beat-to-beat intervals variability: from normal to pathological

open access: yesStudia Universitatis Babeș-Bolyai. Biologia, 2018
Over the past 100 years, electrocardiography (ECG) has provided essential information for diagnosing patients with cardiovascular diseases. Despites the large clinical usefulness of classic paper printed 12-lead ECG, along with the accelerated ...
Ștefan-Claudiu Mirescu   +2 more
doaj   +1 more source

Fast Complexified Quaternion Fourier Transform [PDF]

open access: yesIEEE Transactions on Signal Processing, 2008
A discrete complexified quaternion Fourier transform is introduced. This is a generalization of the discrete quaternion Fourier transform to the case where either or both of the signal/image and the transform kernel are complex quaternion-valued. It is shown how to compute the transform using four standard complex Fourier transforms and the properties ...
Salem Said   +2 more
openaire   +3 more sources

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