Results 41 to 50 of about 143,672 (309)
Impact of age, sex and body mass index on cortisol secretion in 143 healthy adults
Endocrine Connections, 2017 Context: Studies on 24-h cortisol secretion are rare. The impact of sex, age and adiposity on cortisol levels, often restricted to one or a few samples, are well recognized, but conflicting. Objective: To investigate cortisol dynamics in 143 healthy men
Ferdinand Roelfsema +5 more
doaj +1 more source
Frontiers in Neuroimaging, 2023 Functional magnetic resonance imaging (fMRI) has revolutionized human brain research. But there exists a fundamental mismatch between the rapid time course of neural events and the sluggish nature of the fMRI blood oxygen level-dependent (BOLD) signal ...
Soukhin Das +6 more
doaj +1 more source
Deconvolution with Correct Sampling [PDF]
The Astrophysical Journal, 1998 A new method for improving the resolution of astronomical images is presented. It is based on the principle that sampled data cannot be fully deconvolved without violating the sampling theorem. Thus, the sampled image should not be deconvolved by the total Point Spread Function, but by a narrower function chosen so that the resolution of the ...
Magain, Pierre +2 more
openaire +3 more sources
Ma-Weber/Tutorial-Deconvolution: Initial release
, 2020 Tutorial for the deconvolution of hydrophone measurement ...
Ma-Weber
core +1 more source
Impulse Feature Extraction of Bearing Faults Based on Convolutive Nonnegative Matrix Factorization
IEEE Access, 2020 The detection of bearing faults is of great significance for the stable operation of rotating machinery. Apart from detection by analysing the vibration response, another powerful strategy is to extract the periodic impulse excitation directly induced by
Lin Liang +5 more
doaj +1 more source
Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network
FEBS Letters, EarlyView.Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley +1 more source
Deblurring, artifact-free optical coherence tomography with deconvolution-random phase modulation
Opto-Electronic ScienceDeconvolution is a commonly employed technique for enhancing image quality in optical imaging methods. Unfortunately, its application in optical coherence tomography (OCT) is often hindered by sensitivity to noise, which leads to additive ringing ...
Xin Ge +6 more
doaj +1 more source
Application of the nanoindentation technique for the characterization of varved clay
Open Geosciences, 2018 Nanoindentation is a test carried out in a small scale, during which a rigid indenter (of known hardness and geometry) is pressed into the tested material.
Tankiewicz Matylda
doaj +1 more source
Ma-Weber/Tutorial-Deconvolution: Update to correct spelling errors
, 2020 This tutorial presents and explains examples of the deconvolution of hydrophone measurement data. The motivation for performing deconvolution is that, in many cases, measurements of ultrasonic signals are performed with a hydrophone that is (more or less)
Martin Weber +2 more
core +1 more source
Random Action of Compact Lie Groups and Minimax Estimation of a Mean Pattern [PDF]
, 2011 This paper considers the problem of estimating a mean pattern in the setting of Grenander's pattern theory. Shape variability in a dataset of curves or images is modeled by the random action of elements in a compact Lie group on an infinite dimensional ...
Gadat, Sébastien +3 more
core +1 more source