Results 231 to 240 of about 218,762 (405)

Microplastics Identification in Remote Aquatic Environments Using Raman Spectroscopy: A Case Study for Mt. Tymfi's Alpine Lake

open access: yesJournal of Raman Spectroscopy, EarlyView.
This work contributes to the literature on the detection of MPs in Greece, proposes a method for MPs extraction in remote environments taking into account fieldwork constraints of an expedition in the Greek Alps, and takes a step forward in MPs analysis by Raman spectroscopy. ABSTRACT Water samples from the alpine lake of Mt.
Christos Salmas   +4 more
wiley   +1 more source

Resonance Raman Effect in Copper Carbonate Minerals Azurite and Malachite

open access: yesJournal of Raman Spectroscopy, EarlyView.
This study employs Raman spectroscopy to examine the vibrational characteristics of azurite and malachite, specifically focusing on the stretching modes of the carbonate anion present in their structures. The results reveal a potential resonance Raman effect, characterized by an unexpected enhancement of the asymmetric stretching mode compared to the ...
Julliana F. Alves   +2 more
wiley   +1 more source

Determine the Elemental Composition of Minerals From Complex Solid‐Solution Series by Raman Spectroscopy: Implications for Mars Exploration Missions

open access: yesJournal of Raman Spectroscopy, EarlyView.
This study presents a hierarchical Raman‐based classification model for determining the elemental composition of garnets within complex solid‐solution systems. The workflow combines spectral preprocessing, dimensionality reduction, and two‐level classification: first distinguishing between pyralspite and ugrandite groups, and then classifying ...
Sofia Julve‐Gonzalez   +17 more
wiley   +1 more source

RECOVERY OF CRYSTALLINITY IN GROUND CALCITE

open access: green, 1976
R.B. Gammage, D. R. Glasson
openalex   +2 more sources

Carbon sedimentation in shallow floodplain lakes

open access: yesLimnology and Oceanography, EarlyView.
Abstract Shallow lakes are increasingly recognized as important sites for organic carbon (OC) storage. However, the drivers of OC deposition in shallow floodplain lakes remain unclear due to complex terrestrial and aquatic interactions. Using 8 yr of monthly sediment trap data in a cross‐ecosystem experiment on six UK shallow lakes of varying riverine ...
Belén Franco‐Cisterna   +7 more
wiley   +1 more source

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