Results 1 to 10 of about 1,552 (151)

Itrax micro X-ray fluorescence (μXRF) for soft biological tissues [PDF]

open access: yesMethodsX, 2018
Determination of the elemental composition of soft biological tissue is a time-consuming and tedious process when using traditional analytical techniques.
Patricia Gadd   +5 more
doaj   +4 more sources

A core-based XRF scanning workflow for continuous measurement of mineralogical variations in clastic reservoirs [PDF]

open access: yesMethodsX, 2022
Clastic reservoir core is routinely characterized using conventional, destructive spot sampling techniques. Whilst spot sampling provides useful textural and compositional information, the samples are typically widely spaced (∼ 25 cm), and hence ...
Arif Hussain, Khalid Al-Ramadan
doaj   +2 more sources

Coal seam in-situ inorganic analysis based on least angle regression and competitive adaptive reweighted sampling algorithm by XRF–visNIR fusion [PDF]

open access: yesScientific Reports, 2022
The fusion of X-ray fluorescence spectroscopy (XRF) and visible near infrared spectroscopy (visNIR) has been widely used in geological exploration. The outer product analysis (OPA) has a good effect in the fusion.
Lei Zhu   +4 more
doaj   +2 more sources

New multiproxy data obtained from the sedimentary fill of the Ría de Ferrol, NW Iberia [PDF]

open access: yesData in Brief, 2022
Several gravity cores and vibro-cores were recovered from selected sites in the inner sector of Ría de Ferrol, NW Iberia (Muñoz Sobrino et al., 2021) [1].
C. Muñoz Sobrino   +4 more
doaj   +2 more sources

Practical guidelines and recent advances in the Itrax XRF core-scanning procedure [PDF]

open access: yesQuaternary International, 2018
XRF core scanning has evolved to become a standard analytical technique for the rapid assessment of elemental, density and textural variations in a wide range of sediments and other materials, with applications ranging from palaeoceanography ...
Bloemsma, Menno   +21 more
core   +6 more sources

Dendrochemical Challenge in Climate Science: Whether Chemical Elements in Wood Reflect the Fluctuations in Weather Parameters [PDF]

open access: yesPlants, 2022
The aim of this study was to find consistent correlations between weather parameters and elemental content of tree rings in four widely distributed Siberian conifers: Siberian spruce (Picea obovata Ledeb.), Scots pine (Pinus sylvestris L.), Siberian ...
Vladimir Gavrikov   +4 more
doaj   +2 more sources

Signal-to-noise ratios, instrument parameters and repeatability of Itrax XRF core scan measurements of floodplain sediments [PDF]

open access: yesQuaternary International, 2018
This study used signal-to-noise ratios to assess the effects of increasing Itrax XRF instrument parameters, namely tube voltage, tube current and exposure time, on XRF spectra and measurement repeatability.
Daly, Stephen   +4 more
core   +4 more sources

Sedimentary climatic record in the Galician Internal Basin: sediment provenance, transport time and hydrodynamics over the last 60.000 years. [PDF]

open access: yesFrontiers in Marine Science, 2014
The sediments of the Galician Interior Basin are influenced by the Atlantic Meridional Overturning Circulation (AMOC) and by their proximity to the Western Iberia continental landmass , and thus provide an adequate archive to study the peculiarities of ...
Maider Plaza Morlote   +2 more
doaj   +4 more sources

The ITRAX core scanner, a useful tool to distinguish anthropic vs. climatic influences in lagoon of Aveiro (N Portugal) [PDF]

open access: yesJournal of Coastal Research, 2013
The main goal of this work is to distinguish anthropic and climatic influences in sediments from the lagoon of Aveiro (Portugal). This study is based on a core (240-cm long) collected in Murtosa Channel.
Amaral, Paula G. C.   +18 more
core   +4 more sources

Investigation of Adequate Calibration Methods for X-ray Fluorescence Core Scanning Element Count Data: A Case Study of a Marine Sediment Piston Core from the Gulf of Alaska

open access: yesJournal of Marine Science and Engineering, 2021
X-ray fluorescence (XRF) core scanner elemental count data are useful for high-resolution paleoceanographic studies. However, because several factors, such as changes in physical core properties, significantly affect element count intensities, the ...
Md Nurunnabi Mondal   +6 more
doaj   +1 more source

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