Results 111 to 120 of about 1,478,276 (282)

Structure and Propagation of Mesoscale Cyclonic Eddies in the Brazil–Malvinas Confluence

open access: yesInternational Journal of Climatology, EarlyView.
Between 1993 and 2022, 1386 cyclonic eddies were identified in the Brazil–Malvinas Confluence, one of the most energetic regions of the South Atlantic. While most eddies dissipated locally, a smaller number of individuals, more energetic, and longer lived propagated predominantly south‐westward and north‐eastward, driven by topographic constraints and ...
Rafaella Oliveira Santos   +2 more
wiley   +1 more source

Electron probe microanalysis of extremely fine‐grained tephras: new protocols and insights for analyses at the 1 μ ${\rm{\mu }}$m scale

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Volcanic ash (tephra) provides an important chronostratigraphic framework for correlating Quaternary records. In ultra‐distal ( > $\gt $1500 km) settings such as ice cores and marine sediments, deposits are typically preserved as cryptotephra composed of glass shards ≤ 20 μ $\le 20\,\mu
Celeste Smith   +6 more
wiley   +1 more source

Counting curves in surfaces: the tropical and the Fock space approach

open access: yes, 2016
Tropical geometry can be viewed as an efficient tool to organize degenerations. The techniques to count curves in surfaces via tropical geometry are related to the Fock space approach initiated by Cooper-Pandharipande, via floor diagrams (which can be ...
Markwig, Hannah
core   +1 more source

Stronger and prolonged El Niño-Southern Oscillation in the Early Eocene warmth

open access: yesNature Communications
The El Niño Southern Oscillation (ENSO) during the Early Eocene Climatic Optimum (EECO, 56–48 million years ago) is investigated using a multi-model ensemble of deep-time climate simulations. We reveal that ENSO sea surface temperature variability during
S. Abhik   +11 more
doaj   +1 more source

Zeta function rigidity : a view from noncommutative geometry [PDF]

open access: yes, 2011
In this thesis we study the zeta function formalism of finitely summable spectral triples in noncommutative geometry introduced by Alain Connes in 1995.
de Jong, J.W.W.   +2 more
core   +1 more source

Genus 0 characteristic numbers of tropical projective plane

open access: yes, 2014
50 pages, 21 figuresInternational audienceFinding the so-called characteristic numbers of the complex projective plane $CP^2$ is a classical problem of enumerative geometry posed by Zeuthen more than a century ago. For a given $d$ and $g$ one has to find
Bertrand, Benoît   +2 more
core   +1 more source

Cross‐regional and temporal generalizability of portable visible spectroscopy for olive maturity classification

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Olive maturity governs lot destination and the yield–quality trade‐off in olive oil production, yet it is still monitored by subjective visual scoring of the Jaén index. Spectroscopic alternatives have relied mainly on near‐infrared instruments, with scarce evidence from Brazilian orchards and almost no evaluation of spatial or ...
David Mojaravscki   +1 more
wiley   +1 more source

Corrosion Performance of Steel and Zinc‐Based Materials in Diverse Unsaturated Soils: Insights From a 2‐Year Field Exposure

open access: yesMaterials and Corrosion, EarlyView.
The present study generated the corrosion performance of C‐steel, zinc, and galvanized steel in different global unsaturated soil environments for 2 years. Acceptable matching was observed between corrosion rates and identified corrosion products. To properly predict soil corrosion, the results showed that DIN 50929 should include a drainage‐capability
Abdelkader Meroufel   +4 more
wiley   +1 more source

Prevalence and Associations of Abnormal Levels of Vitamin B6 in People with Parkinson's Disease

open access: yesMovement Disorders Clinical Practice, EarlyView.
Abstract Background In people with Parkinson's disease, abnormal levels of vitamin B6 may be associated with polyneuropathy and epileptic seizures, including medication‐refractory status epilepticus. Objectives To estimate the prevalence and explore associations of abnormal levels of vitamin B6 in people with Parkinson's disease.
Karlo J. Lizarraga   +7 more
wiley   +1 more source

Feature Selection and Interpretability in Satellite-Based Solar Irradiance Estimation: Optimizing GEO-KOMPSAT-2A Multispectral Inputs for Tropical Environments

open access: yesEngineered Science
Accurate solar irradiance estimation is critical for solar energy development in tropical regions, yet it remains challenging due to complex atmospheric dynamics in maritime climates.
Rial Arifin Rajagukguk   +11 more
doaj   +1 more source

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