Results 1 to 10 of about 56 (50)

Environmental and health implications of Pb-bearing particles in settled urban dust from an arid city affected by Pb–Zn factory emissions [PDF]

open access: yesScientific Reports, 2023
Metal-rich particles originating from non-ferrous metallurgical activities are the primary source of atmospheric metals in urban environments. These particles vary in size, morphology, and elemental compositions and they undergo weathering processes that
M. F. Soto-Jiménez   +4 more
doaj   +2 more sources

Non-power positional number representation systems, bijective numeration, and the Mesoamerican discovery of zero [PDF]

open access: yesHeliyon, 2021
Pre-Columbian Mesoamerica was a fertile crescent for the development of number systems. A form of vigesimal system seems to have been present from the first Olmec civilization onwards, to which succeeding peoples made contributions.
Berenice Rojo-Garibaldi   +3 more
doaj   +2 more sources

Apolar compounds in seaweeds from fernando de noronha archipelago (northeastern coast of Brazil). [PDF]

open access: yesInt J Anal Chem, 2012
Hyphenated techniques of gas chromatography coupled to mass spectrometer were used to determine fatty acids in eleven species of seaweeds from Fernando de Noronha archipelago. The main compounds detected in all studied species were the alcohol phytol and the fatty acids 14 : 0; 15 : 0; 16 : 0; 18 : 0; 18 : 1 n9; 18 : 2 Δ9,12; 20 : 4; 20 : 5.
Ferreira Lde S   +6 more
europepmc   +2 more sources

Vulnerability of marine megafauna to global at-sea anthropogenic threats. [PDF]

open access: yesConserv Biol
Abstract Marine megafauna species are affected by a wide range of anthropogenic threats. To evaluate the risk of such threats, species’ vulnerability to each threat must first be determined. We build on the existing threats classification scheme and ranking system of the International Union for Conservation of Nature (IUCN) Red List of Threatened ...
VanCompernolle M   +312 more
europepmc   +2 more sources

On the Non‐Linear Nature of Long‐Term Sea Surface Temperature Global Trends

open access: yesEarth and Space Science
The year‐to‐year rate and acceleration of the changes in global sea surface temperatures (SSTs) for 1870–2022 are determined using non‐linear techniques. Our methodology identifies the non‐linear, long‐term tendencies of the warming, revealing subtle but
B. Martinez‐Lopez   +3 more
doaj   +2 more sources

Comparación de métodos de detección del inicio y término de la estación lluviosa basado en datos de precipitación

open access: yesTecnología en Marcha, 2022
Diferentes metodologías han sido propuestas para la detección del inicio y término de la estación lluviosa que incluyen el área de América Central.
Pablo Ureña-Mora, Eric J. Alfaro
doaj   +1 more source

Nonlinear time series analysis of coastal temperatures and El Niño–Southern Oscillation events in the eastern South Pacific [PDF]

open access: yesEarth System Dynamics, 2023
We carry out a nonlinear time series analysis motivated by dynamical systems theory to investigate the links between temperatures on the eastern South Pacific coast, influenced by the Humboldt Current System, and El Niño–Southern Oscillation (ENSO ...
B. Rojo-Garibaldi   +6 more
doaj   +1 more source

Spatio‐temporal downscaling emulator for regional climate models

open access: yesEnvironmetrics, Volume 34, Issue 7, November 2023., 2023
Abstract Regional climate models (RCM) describe the mesoscale global atmospheric and oceanic dynamics and serve as dynamical downscaling models. In other words, RCMs use atmospheric and oceanic climate output from general circulation models (GCM) to develop a higher resolution climate output.
Luis A. Barboza   +4 more
wiley   +1 more source

Expert perspectives on global biodiversity loss and its drivers and impacts on people

open access: yesFrontiers in Ecology and the Environment, Volume 21, Issue 2, Page 94-103, March 2023., 2023
Despite substantial progress in understanding global biodiversity loss, major taxonomic and geographic knowledge gaps remain. Decision makers often rely on expert judgement to fill knowledge gaps, but are rarely able to engage with sufficiently large and diverse groups of specialists.
Forest Isbell   +65 more
wiley   +1 more source

Metamorphosis of spiny lobsters (Panulirus argus and Panulirus guttatus) in the Yucatan Current as inferred from the distribution of pueruli and final stage phyllosomata

open access: yesLimnology and Oceanography, Volume 66, Issue 9, Page 3421-3438, September 2021., 2021
Abstract For spiny lobsters (Palinuridae), the co‐occurrence of final‐stage larvae (phyllosomata) and postlarvae (pueruli) in sampling stations over oceanic waters is indicative of metamorphosis zones, some of which have been found in boundary currents. We hypothesized that metamorphosis of Panulirus argus and P.
Patricia Briones‐Fourzán   +9 more
wiley   +1 more source

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