Results 81 to 90 of about 153,264 (305)
Spectral variability in NGC 1042 ULX1 [PDF]
, 2022 We report X-ray spectral variability in an ultraluminous X-ray source NGC 1042 ULX1, using archival XMM-Newton and recent NuSTAR observations. In long-term evolution, the source has shown a trend of variation in spectral hardness.
Ghosh, Tanuman, Rana, Vikram
core +2 more sources
Spectral and Photometric Studies of NGC 4151 in the Optical Range: Current Results
UniverseWe present the results of long-term photometric and spectroscopic monitoring of the Seyfert galaxy NGC 4151 based on new observational data complemented by archival material spanning several decades. NGC 4151 is one of the most extensively studied active
Nazim Huseynov +7 more
doaj +1 more source
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo +5 more
wiley +1 more source
A New Extended Linear Mixing Model to Address Spectral Variability [PDF]
, 2014 International audienceSpectral variability is a phenomenon due, to a grand extend, to variations in the illumination and atmospheric conditions within a hyperspectral image, causing the spectral signature of a material to vary within a image.
Drumetz, Lucas +13 more
core +1 more source
Remote SensingHyperspectral target detection (HTD) is a crucial aspect of remote sensing applications, aiming to identify targets in hyperspectral images (HSIs) based on their known prior spectral signatures.
Xiaodian Zhang +7 more
doaj +1 more source
Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?
FEBS Letters, EarlyView.This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes +3 more
wiley +1 more source
Tropical ocean-atmosphere controls on inter-annual climate variability in the Cretaceous Arctic [PDF]
, 2011 The first annually resolved sedimentary record from the Cretaceous is used to develop time series of inter-annual and decadal scale climate variability from the Arctic Ocean.
Kemp, Alan E.S. +5 more
core +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingSpectral variability and nonlinear mixing interactions critically degrade spectral unmixing accuracy, especially in heterogeneous environments. To address these challenges, this study proposes a robust nonlinear spectral variability-aware unmixing model,
Jie Yu +9 more
doaj +1 more source
The spectral analysis of motion: An "open field" activity test example [PDF]
Acta Veterinaria, 2013 In this work we have described the new mathematical approach, with spectral analysis of the data to evaluate position and motion in the „„open field““ experiments.
Obradović Z. +7 more
doaj +1 more source
On the Fast Spectral Variability of GRBs [PDF]
, 2003 3 pages with 2 figures; to appear in the Proceedings of the workshop "Gamma-Ray Bursts in the Afterglow Era: 2nd Workshop", held in Rome, October 17-20 ...
Mazets, E. P. +7 more
openaire +2 more sources