Results 31 to 40 of about 59,811 (258)

Data acquisition system of a von Hamos X-ray emission spectrometer based on PILATUS detector

open access: yesHe jishu, 2022
BackgroundHigh energy resolution X-ray emission spectroscopy (XES) has higher energy resolution than conventional X-ray absorption fine structure spectroscopy (XAFS), hence a powerful tool to explore the fine electronic structure of matter.
GU Songqi   +3 more
doaj   +1 more source

XAFS analysis of Arsenic bound in holocellulose extracted from organic-rich contaminated sediments [PDF]

open access: yesE3S Web of Conferences, 2019
The arsenic bound in holocellulose, a precursor of humic substances extracted from organic contaminated sediments, was investigated using XANES (x-ray adsorption near-edge structure) and EXAFS (extended x-ray absorption fine structure) with fluorescence ...
Hara Junko, Norota Susumu
doaj   +1 more source

Fine Structure of X-Ray Absorption Edges [PDF]

open access: yesNature, 1924
IN the issue of the Zeitschrift fur Physik for July 2, 1924, Dr. Coster reports the existence of a white line on the long wave-length side of the absorption edge in the case of the higher valence forms of various elements. Evidence has been obtained in this laboratory that iodic acid and potassium permanganate, two of the substances for which he ...
openaire   +2 more sources

Gallium Selenide and Rubidium Iodide Filling of Single-Walled Carbon Nanotubes as p, and n-Dopant Chemical Compounds

open access: yesEngineering Proceedings, 2023
I filled the single-walled carbon nanotubes (SWCNTs) with gallium selenide (GaSe) and rubidium iodide (RbI) as p- and n-dopant chemical compounds. The filling was confirmed by high-resolution transmission electron microscopy.
Marianna V. Kharlamova
doaj   +1 more source

Dispersive X-ray absorption spectroscopy using independent grazing-incidence focusing and convexly bent Bragg-crystal dispersing optics

open access: yesJournal of Synchrotron Radiation
We present a modular instrument for dispersive X-ray absorption spectroscopy (DXAS) developed for the Advanced Spectroscopy Beamline at Sector 25 of the Advanced Photon Source.
Juanjuan Huang   +7 more
doaj   +1 more source

Combined X-ray absorption and SEM–EDX spectroscopic analysis for the speciation of thorium in soil

open access: yesScientific Reports, 2023
Mobility and bioavailability of radionuclides in the environment strongly depend on their aqueous speciation, adsorption behavior and the solubility of relevant solid phases. In the present context, we focus on naturally occurring Th-232 at a location in
Sanduni Ratnayake   +8 more
doaj   +1 more source

Influence of polyethylene glycol on the physical properties of Co0.2Fe2.8O4 nanoparticles used as MRI contrast agent; synchrotron radiation Fe K-edge XAFS

open access: yesJournal of Materials Research and Technology, 2021
We have synthesized and characterized the surface-modified nanoparticles (NPs) of Co0.2Fe2.8O4/x polyethylene glycol (PEG) (x = 0, 10, 20, 30, and 40%).
N.G. Imam   +5 more
doaj   +1 more source

X-ray absorption spectroscopy of Mn doped ZnO thin films prepared by rf sputtering technique

open access: yesAIP Advances, 2015
A set of r.f. sputter deposited ZnO thin films prepared with different Mn doping concentrations have been characterised by Extended X-ray Absorption Fine Structure (EXAFS) and X-ray Absorption Near Edge Spectroscopy (XANES) measurements at Zn, Mn and O K
Ashok Kumar Yadav   +5 more
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

open access: yesFEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno   +3 more
wiley   +1 more source

The dissection of atomic clusters with local structure in Ga-Sn alloy melts

open access: yesAIP Advances, 2018
The statistic short-range order (SRO) structure parameters of the Ga-Sn alloy melt are obtained with the X-ray diffractometer. The local atomic and electronic structures around the absorption atoms of Ga and Sn elements are detected by X-ray absorption ...
Xiaolin Zhao   +5 more
doaj   +1 more source

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