Results 1 to 10 of about 59,622 (239)

Comparison of different methods to assess the distribution of alien plants along the road network and use of Google Street View panoramas interpretation in Sicily (Italy) as a case study [PDF]

open access: yesBiodiversity Data Journal, 2021
The survey by foot in the field is compared to the survey from a car, the photo-interpretation of Google Street View (GSV) panoramas continuously and at intervals of 1.5 km and the photo-interpretation of Google Earth aerial images on a 10 km stretch of ...
Giulio Barone   +2 more
doaj   +3 more sources

Hydrothermal plumes as hotspots for deep-ocean heterotrophic microbial biomass production

open access: yesNature Communications, 2021
Hydrothermal vents are biogeochemically important, but their contribution to the carbon cycle is poorly constrained. Here the authors build a biogeochemical model that estimates autotrophic and heterotrophic production rates of microbial communities ...
Cécile Cathalot   +11 more
doaj   +1 more source

An Asymmetrical Hypothesis for the NREM-REM Sleep Alternation—What Is the NREM-REM Cycle?

open access: yesFrontiers in Neuroscience, 2021
Since the discovery of rapid eye movement (REM) sleep (Aserinsky and Kleitman, 1953), sleep has been described as a succession of cycles of non-REM (NREM) and REM sleep episodes.
Olivier Le Bon
doaj   +1 more source

Indicators of economic crises: a data-driven clustering approach

open access: yesApplied Network Science, 2020
The determination of reliable early-warning indicators of economic crises is a hot topic in economic sciences. Pinning down recurring patterns or combinations of macroeconomic indicators is indispensable for adequate policy adjustments to prevent a ...
Maximilian Göbel, Tanya Araújo
doaj   +1 more source

Evaluation of Pain Tolerance Threshold Following Administration of Anti-TNF-α in REM Sleep-deprived Male Wistar Rats [PDF]

open access: yesIranian Journal of Neurosurgery, 2021
Background and Aim: The level of Tumor Necrosis Factor-alpha (TNF-α) changes by REM sleep deprivation. TNF-α is a known biomarker of REM sleep deprivation (RSD).
Mohammadjavad Hoseinpourfard   +4 more
doaj   +1 more source

Exploring Environmental DNA (eDNA) to Assess Biodiversity of Hard Substratum Faunal Communities on the Lucky Strike Vent Field (Mid-Atlantic Ridge) and Investigate Recolonization Dynamics After an Induced Disturbance

open access: yesFrontiers in Marine Science, 2020
Deep ocean hydrothermal vent ecosystems face physical disturbances from naturally occurring volcanic and tectonic activities and are at increasing risk of mineral resource exploitation, raising concerns about the resilience of endemic biological ...
Dominique A. Cowart   +4 more
doaj   +1 more source

Estimating brown bear population density and abundance using camera traps in the Central Forest State Nature Reserve (west of European Russia)

open access: yesNature Conservation Research: Заповедная наука, 2023
This paper presents the results of estimating the population density and abundance of Ursus arctos (hereinafter – brown bear) in the Southern Forestry of the Central Forest State Nature Biosphere Reserve (CFNR), West of European Russia, in 2021 based on ...
Sergey S. Ogurtsov
doaj   +1 more source

Crustal structure of the East African Limpopo margin, a strike-slip rifted corridor along the continental Mozambique Coastal Plain and North Natal Valley [PDF]

open access: yesSolid Earth, 2021
Coincident wide-angle and multi-channel seismic data acquired within the scope of the PAMELA Moz3-5 project allow us to reconsider the formation mechanism of East African margins offshore of southern Mozambique.
M. Evain   +9 more
doaj   +1 more source

Cold-Water Coral Habitats in Submarine Canyons of the Bay of Biscay

open access: yesFrontiers in Marine Science, 2017
The topographical and hydrological complexity of submarine canyons, coupled with high substratum heterogeneity, make them ideal environments for cold-water coral (CWC) habitats.
Inge M. J. van den Beld   +8 more
doaj   +1 more source

Determination of the parameters of thermodynamic stability constants of bromide complexes of rare earth metals for modeling the optimal regimes of hydrometallurgical extraction

open access: yesArab Journal of Basic and Applied Sciences, 2022
Determination of the thermodynamic parameters of complex compounds of rare earth metals in aqueous solutions is of considerable interest for understanding the hydrometallurgical processes associated with the extraction and separation of yttrium and ...
Fialkovsky Igor Sergeevich   +3 more
doaj   +1 more source

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