Results 21 to 30 of about 28,693 (158)

Binding of metals to macromolecular organic acids in natural waters [PDF]

open access: yes, 2008
Trace metal speciation and bioavailability have become keys to current day toxicity and risk assessments. For many metals, macromolecular organic acids constitute the major ligand in fresh water and soil solution.
van Schaik, Joris W. J.
core   +1 more source

On the selective aerobic oxidation of benzyl alcohol with Pd/Au-nanoparticles in batch and flow

open access: yesNanotechnology Reviews, 2014
Nanoparticles (NP) have specific catalytic properties, which are influenced by parameters like their size, shape, or composition. Bimetallic NPs, composed of two metal elements can show an improved catalytic activity compared to the monometallic NPs. We,
Alex Hannes   +4 more
doaj   +1 more source

EDA: EXAFS data-analysis software package [PDF]

open access: yes, 2021
The EXAFS data-analysis software package EDA consists of a suite of programs running under a Windows operating system environment that is designed to perform all steps of conventional EXAFS data analysis such as extraction of the XANES/EXAFS parts of the
Alexei Kuzmin, Kuzmin, Alexei
core   +1 more source

Investigation of temperature and pressure effects on thermodynamic parameters of intermetallic alloy in EXAFS

open access: yesCogent Engineering, 2020
This work advances the anharmonic correlated Einstein model to investigate how pressure and temperature affect the Debye–Waller factor and thermodynamic parameters of an intermetallic alloy. By using the anharmonic correlated Einstein model in extended X-
Nguyen Ba Duc
doaj   +1 more source

Coupling X-ray Absorption and Raman Spectroscopies to Characterize Iron Species in a Karst Pedosedimentary Record

open access: yesSoil Systems, 2022
The identification of iron (Fe) forms throughout a sediment sequence was investigated by X-ray Absorption Near Edge Spectroscopy (XANES) and Extended X-ray Absorption Fine Structure (EXAFS) at the Fe K-edge, paired with Raman micro-spectroscopy.
Beatrice Giannetta   +5 more
doaj   +1 more source

Open-source electrochemical cell for in situ X-ray absorption spectroscopy in transmission and fluorescence modes

open access: yesJournal of Synchrotron Radiation
X-ray spectroscopy is a valuable technique for the study of many materials systems. Characterizing reactions in situ and operando can reveal complex reaction kinetics, which is crucial to understanding active site composition and reaction mechanisms.
Hiram Lopez-Astacio   +4 more
doaj   +1 more source

Theory of x-ray absorption spectroscopy: A microscopic Bloch equation approach for two-dimensional solid states

open access: yesPhysical Review Research, 2023
We develop a self-consistent Maxwell-Bloch formalism for the interaction of x-rays with two-dimensional crystalline materials by incorporating the Bloch theorem and Coulomb many-body interaction. This formalism is illustrated for graphene, by calculating
Dominik Christiansen   +3 more
doaj   +1 more source

30 years of Journal of Synchrotron Radiation and synchrotron science

open access: yesJournal of Synchrotron Radiation
Journal of Synchrotron Radiation (JSR) came into being with the publication of its inaugural issue in October 1994 that contained 15 full articles comprising 100 pages. Thirty years of JSR has coincided with several Nobel Prizes that have arisen from the
S. Samar Hasnain
doaj   +1 more source

Combining EXAFS and Computer Simulations to Refine the Structural Description of Actinyls in Water

open access: yesMolecules, 2020
EXAFS spectroscopy is one of the most used techniques to solve the structure of actinoid solutions. In this work a systematic analysis of the EXAFS spectra of four actinyl cations, [UO2]2+, [NpO2]2+, [NpO2]+ and [PuO2]2+ has been carried out by comparing
Sergio Pérez-Conesa   +3 more
doaj   +1 more source

Quantitative analysis of EXAFS data sets using deep reinforcement learning

open access: yesScientific Reports
Extended X-ray absorption fine structure (EXAFS) serves as a unique tool for accurately characterizing the local structural properties surrounding specific atoms. However, the quantitative analysis of EXAFS data demands significant effort.
Eun-Suk Jeong   +2 more
doaj   +1 more source

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