Results 31 to 40 of about 1,259,007 (299)
X-ray Variability Characteristics of the Seyfert 1 Galaxy NGC 3783 [PDF]
, 2005 We have characterized the energy-dependent X-ray variability properties of the Seyfert~1 galaxy NGC 3783 using archival XMM-Newton and Rossi X-ray Timing Explorer data.
A. Markowitz +9 more
core +1 more source
Frontiers in Water, 2022 Rates of nitrogen (N) cycling processes like denitrification and dinitrogen (N2) fixation, which together are the primary contributors to N2 flux rates from surface waters, may change at different time scales from seasons to weeks to days.
Kevin C. Nevorski, Amy M. Marcarelli
doaj +1 more source
Hot-Moments of Soil CO2 Efflux in a Water-Limited Grassland [PDF]
, 2018 The metabolic activity of water-limited ecosystems is strongly linked to the timing and magnitude of precipitation pulses that can trigger disproportionately high (i.e., hot-moments) ecosystem CO2 fluxes.
Curiel Yuste, Jorge +6 more
core +4 more sources
A modal logic with temporal variables. [PDF]
Notre Dame Journal of Formal Logic, 1978 There appear thus far to have been five general methods suggested in the literature for formalizing indeterministic tense-modal logics. The first consists in the introduction of a third truth-value, but this has the absurb consequence that the law of non-contradiction must be denied since the conjunction of any two propositions having the indeterminate
openaire +2 more sources
The place of the Sun among the Sun-like stars [PDF]
, 2013 Context. Monitoring of the photometric and chromospheric HK emission data series of stars similar to the Sun in age and average activity level showed that there is an empirical correlation between the average stellar chromospheric activity level and the ...
Cessateur, G. +3 more
core +1 more source
OENO One, 2019 Aim: While it is well recognised that climate can vary spatially so that grapevine phenology significantly varies within a winegrowing region, the magnitude of temporal variability in climate determining factors to engender a significant difference in ...
Andrew Hall, John Blackman
doaj +1 more source
Temporal-spatial dynamic functional connectivity analysis in schizophrenia classification
Frontiers in Neuroscience, 2022 With the development of resting-state functional magnetic resonance imaging (rs-fMRI) technology, the functional connectivity network (FCN) which reflects the statistical similarity of temporal activity between brain regions has shown promising results ...
Cong Pan +4 more
doaj +1 more source
Frontiers in Neuroscience, 2022 ObjectiveA number of studies in adults and children with generalized tonic-clonic seizure (GTCS) have reported the alterations in morphometry, functional activity, and functional connectivity (FC) in the thalamus.
Yongxin Li +5 more
doaj +1 more source
Temporal variability in snow distribution [PDF]
Annals of Glaciology, 2004 AbstractSnow-courses data have been collected in order to investigate the temporal variability of snow distribution in two catchments in southern Norway during the 2002 melt season. The profiles represent different elevations, aspects and terrain types.
Alfnes, Eli +4 more
openaire +2 more sources
Quantification and Qualification of Floral Patterns of Coffea arabica L. in Colombia
Plants, 2023 The phenological patterns of coffee flowering in Colombia have typically been studied in a descriptive way, with knowledge from an inferential perspective being scarce.
Carlos Andres Unigarro +3 more
doaj +1 more source