Results 81 to 90 of about 12,818 (227)

Spatial and Temporal Variation in Drivers of Saltmarsh Eco‐Geomorphic Evolution: Field Insights From the St. Lawrence Estuary, Canada

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 9, September 2026.
Field campaigns establish a novel hydro‐eco‐geomorphic database for St. Lawrence Estuary saltmarshes; foundations to predict ecosystem evolution in an understudied region. Documented spatial and temporal variability in vegetation traits, inundation dynamics and sediment supply warrants further investigation in saltmarsh modelling frameworks.
Acacia Markov   +3 more
wiley   +1 more source

Dois planos de amostragem para análise de fumonisinas em milho Two sampling plans for fumonisins analysis in maize

open access: yesCiência Rural, 2013
O objetivo deste trabalho foi avaliar a eficiência de dois planos de amostragem para análise de fumonisinas (B1+B2) em 11 lotes de milho. Empregaram-se o plano de amostragem manual em grãos inteiros, através do calador graneleiro e o plano de Amostragem ...
Adriano Olnei Mallmann   +7 more
doaj  

Morphological Changes and Alterations in Erosion–Accretion Patterns in a Semiarid Brazilian River

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 9, September 2026.
Flow regulation by the Castanhão Dam significantly altered discharge dynamics and reduced sediment transport in the Jaguaribe River. Long‐term analysis (1958–2025) reveals attenuated flood peaks, decreased channel migration and progressive downstream stabilisation, highlighting persistent geomorphic adjustments in a regulated semiarid fluvial system ...
Andrea Almeida Cavalcante   +2 more
wiley   +1 more source

Image processing for granulometry analysis via neural networks

open access: yes, 2008
The analysis of granulometry of substances is relevant in a great variety of the research and industrial applications as such as the pharmaceutical sector, the food sector, the basic materials production and in the concrete and wood panel industries ...
Fabio Scotti   +5 more
core   +1 more source

Composition and Provenance of Victoria Group Sandstones in Southern North Victoria Land, Antarctica

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
Three distinct source areas contributed to sandstones of the Victoria Group within the Transantarctic Basin in southern North Victoria Land. During the Permian, quartzose sandstones were derived from erosion of the local Ross Orogen, likely from an uplifted swell in the area of today's Ross Sea, the Ross High.
Martin Elsner   +6 more
wiley   +1 more source

Pretreated methods on loess-palaeosol samples granulometry

open access: yes, 1998
Twenty representative samples were collected from the Chinese loess plateau and each sample was prepared in 6 different ways respectively in order to test the influences of pretreated methods on grain size measurement. The results show that (i) different
An, ZS, Lu, HY
core   +1 more source

EXACT EQUATIONS FOR SOIL PARTICLE-SIZE ANALYSIS BY GAMMA-RAY ATTENUATION

open access: yesScientia Agricola, 1999
Soil particle-size analysis by gamma-ray attenuation was first suggested in 1992 and improved in 1997 by diminishing the measurement time and adapting it for automation.
Elimoel Abraão Elias   +2 more
doaj  

Mineralogical Characterization of the Grot Lead and Zinc Mine Tailings from Aspects of Their Further Use as Raw Material

open access: yesApplied Sciences
The possibility of using waste tailings produced by flotation in the lead and zinc mine of Grot, Serbia as a potential source of secondary mineral raw materials was examined.
Jelena Gulicovski   +6 more
doaj   +1 more source

Differential growth dynamics of common salt marsh species Spartina alterniflora and Juncus roemerianus under varied sediment amendments

open access: yesRestoration Ecology, Volume 34, Issue 7, September 2026.
Abstract Introduction Many coastal wetlands are at high risk of degradation or loss due to sea‐level rise. Restoration techniques for maintaining coastal marshes are paramount, with thin‐layer placement (TLP) emerging as one feasible solution. Despite TLP's utilization, additional research is needed on species‐ and sediment‐specific responses ...
Caitlin Hemphill   +2 more
wiley   +1 more source

Changes in food‐web pathways and ecosystem functions after sidearm re‐connection in a large river (Danube, Austria)

open access: yesRestoration Ecology, Volume 34, Issue 7, September 2026.
Abstract Introduction River regulation schemes generally led to changes in riverine assemblage composition and their trophic status, which often is reflected in a general loss or decrease of characteristic species and a concomitant increase or dominance of generalist species.
Hubert Keckeis   +7 more
wiley   +1 more source

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