Results 41 to 50 of about 3,397 (172)

Correcting field determination of elemental contents in soils via portable X-ray fluorescence spectrometry

Ciência e Agrotecnologia
Portable X-ray fluorescence (pXRF) spectrometry has been useful worldwide for determining soil elemental content under both field and laboratory conditions.
Thaís Santos Branco Dijair, Fernanda Magno Silva, Anita Fernanda dos Santos Teixeira, Sérgio Henrique Godinho Silva, Luiz Roberto Guimarães Guilherme, Nilton Curi   +5 more
doaj   +1 more source

Wari Lithic Technology on the Northern Coast of the Andes: Geochemical, 2D Geometric Morphometric, and Technological Analyses of Obsidian Bifaces From San José de Moro

Archaeometry, Volume 68, Issue 5, Page 994-1008, October 2026.
ABSTRACT This study examines Wari obsidian production in a cache of 39 bifaces found at the Late Moche site of San José de Moro (Jequetepeque Valley, North Coast of Peru, 700–850 ad). Portable X‐ray fluorescence, geometric morphometric, and technological analyses were used to investigate raw material provenance and bifacial production.
Antonio Pérez‐Balarezo, Luis Jaime Castillo, Jalh Dulanto   +2 more
wiley   +1 more source

Undersøkelse av egnetheten til pXRF-metoder i geokjemisk kartlegging [PDF]

, 2018
Håndholdt røntgenfluorescens (pXRF) er en rask, hendig og relativt billig analysemetode for bestemmelse av totalinnholdet til en rekke elementer i faste prøvemedier.
Hougen, Magnus Eikeland
core   +1 more source

A Multi‐Analytical Approach for the Compositional Characterization and Chronological Discrimination of Benin (Nigeria) Metal Sculptures

Archaeometry, Volume 68, Issue 5, Page 1022-1036, October 2026.
ABSTRACT This study presents a multi‐analytical archaeometric approach for the compositional characterization and chronological discrimination of Benin metal sculptures in relation to the 1897 Punitive Expedition. The methodology integrates elemental composition (XRF and ICP), stable lead isotope ratios (MC‐ICP‐MS) for alloy system characterization ...
I. Torraba, D. A. Ahumada, H. Bagán, A. Tarancón, S. Eisenhofer, J. F. García   +5 more
wiley   +1 more source

Portable X-ray fluorescence (pXRF) applications in tropical Soil Science

, 2017
The X-ray fluorescence (XRF) is an analytical technique for determination of elemental composition of different materials. In soils, the XRF has many pedological, environmental and agronomic applications, mainly after the emergence of portable equipments
Bruno Teixeira Ribeiro, Luiz Roberto Guimarães Guilherme, Sérgio Henrique Godinho Silva, Elen Alvarenga Silva   +3 more
core   +2 more sources

Portable X-ray fluorescence (pXRF) spectrometry applied to the prediction of chemical attributes in Inceptisols under different land uses

Ciência e Agrotecnologia
Portable X-ray fluorescence (pXRF) spectrometry has been increasingly adopted for varying studies worldwide. This work aimed at characterizing effects of soil management on the content of chemical elements detected by pXRF in managed and unmanaged areas ...
Anita Fernanda dos Santos Teixeira, David C. Weindorf, Sérgio Henrique Godinho Silva, Luiz Roberto Guimarães Guilherme, Nilton Curi   +4 more
doaj   +1 more source

Multi‐proxy sequence stratigraphy of a mixed carbonate–siliciclastic shelf across the Jurassic–Cretaceous transition

The Depositional Record, Volume 12, Issue 4, September 2026.
An integrated facies, MS and XRF‐based approach applied to the Tithonian–Berriasian Sidi Khalif Formation (central Tunisia) resolves five Tithonian and eight Berriasian third‐order sequences, showing how mixed carbonate–siliciclastic shelves record coupled eustatic, climatic and tectonic controls and providing a transferable template for similar mud ...
Hamdi Omar, Adnene Lafi, Chokri Yaich
wiley   +1 more source

Reconnaissance Investigation of Sedimentation Patterns in a Small Modern Anthropogenically Influenced Inlet, Otūwhero Estuary, Abel Tasman National Park, New Zealand

New Zealand Journal of Marine and Freshwater Research, Volume 60, Issue 3, September 2026.
The structurally controlled Otūwhero estuary on the SE boundary of Abel Tasman National Park is a small partially filled incised valley. The small size, limited number of fluvial inputs, accessibility and surrounding land use made it an ideal candidate on which to investigate potential climate‐induced estuarine behaviour. Surficial sediment samples and
Mark J. F. Lawrence, Henry J. L. Gard, Barbara Lyndsell, Salman Ashraf, Steven Rosenberg   +4 more
wiley   +1 more source

Energy Crop Cultivation of Miscanthus × giganteus on Biochar‐Amended Marginal Soils With Conventional and Waste‐Derived Fertilization: Biomass Allocation and Nutrient Dynamics Toward Closing Nutrient Loops

GCB Bioenergy, Volume 18, Issue 9, September 2026.
Biochar and spent coffee grounds supported Miscanthus × giganteus cultivation on marginal soil by improving biomass production, modifying root‐shoot biomass allocation, and enhancing nutrient retention. Nutrient‐rich, low‐contaminant phyto‐ashes further highlight the circular reuse potential of this bioenergy crop system.
Nicole Nawrot, Joanna Strycharz, Muhammad Mohsin, Suvi Kuittinen, Karolina Matej‐Łukowicz, Jacek Kluska, Ari Pappinen, Emil Jespersen, Carlos A. Arias, Jarosław Borowiak, Katarzyna Tarasewicz, Ewa Wojciechowska   +11 more
wiley   +1 more source

Einsatz der PXRF-Analytik zur petrographischen Klassierung eines umfassenden Fundinventars an Gesteinsartefakten [PDF]

, 2019
Archaeological rock artefacts are often very fine-grained and an unequivocal visual classification may thus be difficult, even for geologists. Geoscientific analytical methods would allow an unambiguous classification; however, they are not free of ...
Eggenberger, Urs, Widmer, Anna Barbara, Burri, Thomas, Hofmann, Beda, Diamantopoulou, Despoina   +4 more
core