Results 31 to 40 of about 601,668 (305)

Laser plasma x-ray source for ultrafast time-resolved x-ray absorption spectroscopy

open access: yesStructural Dynamics, 2015
We describe a laser-driven x-ray plasma source designed for ultrafast x-ray absorption spectroscopy. The source is comprised of a 1 kHz, 20 W, femtosecond pulsed infrared laser and a water target.
L. Miaja-Avila   +8 more
doaj   +1 more source

Calcite Nanocrystals Investigated Using X-ray Absorption Spectroscopy

open access: yesCrystals, 2021
For the present work, calcite nanocrystals were grown by annealing precursors at 500 °C. These precursors were obtained by three different thermal schemes. Among these schemes, two involve heating at 100 °C for 16 h and 16 + 24 h, respectively.
Varsha Singh   +7 more
doaj   +1 more source

Soft X-Ray Spectroscopy of Low-Valence Nickelates

open access: yesFrontiers in Physics, 2021
Low-valence nickelates—including infinite-layer (IL) and trilayer (TL) compounds—are longstanding candidates for mimicking the high-temperature superconductivity of cuprates. A recent breakthrough in the field came with the discovery of superconductivity
Matthias Hepting   +2 more
doaj   +1 more source

Introduction to X-Ray Absorption Spectroscopy

open access: yes, 2016
X-ray Absorption Spectroscopy (XAS) is a well-established analytical technique used extensively for the characterization of semiconductors in solid or liquid, crystalline or amorphous, bulk or nanoscale form.
Ridgway, Mark C, Schnohr, Claudia
core   +1 more source

PINK: a tender X-ray beamline for X-ray emission spectroscopy

open access: yesJournal of Synchrotron Radiation
A high-flux beamline optimized for non-resonant X-ray emission spectroscopy (XES) in the tender X-ray energy range has been constructed at the BESSY II synchrotron source.
Sergey Peredkov   +5 more
doaj   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

open access: yesFEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas   +6 more
wiley   +1 more source

X-Ray Absorption Spectroscopy

open access: yesActa Physica Polonica A, 1994
X-ray absorption spectroscopy, today widely used as a tool for structural investigations, is described. Theoretically it is shown that above an absorption edge the absorption coefficient is well approximated by a sum of terms, each one describing a particular path followed by the photoelectron outgoing from the atom.
openaire   +2 more sources

Quantitative chemical analysis of pickling solutions by x-ray fluorescence spectrometry

open access: yes, 2019
A quantitative analytical method of chlorine and iron in hydrochloric pickling solutions by x-ray spectrometry in atmospheric He mode is proposed. This work is concerned with the replacement of the wet chemical analyses of pickling solutions with rapid ...
Na, HG, Min, DJ, Jung, SM, Cho, YM
core   +1 more source

Effect of gamma irradiation on cytotoxicity and drug delivery applications of borosilicate bioactive glasses

open access: yesDiscover Applied Sciences
This study investigates the synthesis and characterization of borosilicate bioactive glass with the composition [50 B2O3–5 SiO2–15 ZnO–30 CaO], focusing on the effects of gamma irradiation on its properties and drug delivery capabilities.
Taha M. Tiama   +4 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

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