Results 61 to 70 of about 11,147,788 (335)

Operation of Photo Electron Spectrometers for Non-Invasive Photon Diagnostics at the European X-Ray Free Electron Laser

open access: yesApplied Sciences
Angle-resolved photoelectron spectrometers with microchannel plate detectors and fast digitizer electronics are versatile and powerful devices for providing non-invasive single-shot photon diagnostics at a MHz repetition rate X-ray free-electron lasers ...
Joakim Laksman   +11 more
doaj   +1 more source

IMAGING TECHNIQUES IN THE DIFFERENTIAL DIAGNOSIS OF PARASITIC LUNG DISEASES AND LUNG CANCER

open access: yesСибирский онкологический журнал, 2016
We analyzed imaging findings of 18 patients with atypical manifestations of parasitic diseases of the lung, who were admitted to the hospital with suspected lung cancer or metastatic lung cancer.
P. M. Kotlyarov, N. I. Sergeev
doaj   +1 more source

Diffuse X-ray scattering from polished silicon: application of the distorted wave Born approximation

open access: yesJournal of Synchrotron Radiation, 2022
Measured diffuse X-ray scattering data for a `smooth' as well as for a `rough' silicon sample were fit to theoretical expressions within the distorted wave Born approximation (DWBA).
Albert Macrander   +3 more
doaj   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

Efficient overall water splitting in acid with anisotropic metal nanosheets

open access: yesNature Communications, 2021
Ru is one of the most active metals for oxygen evolution reaction, but it quickly dissolves in acidic electrolyte particularly in nanosized form. Here, the authors show that coral-like solid-solution Ru‒Ir consisting of 3 nm-thick sheets with only 6 at ...
Dongshuang Wu   +16 more
doaj   +1 more source

X-rays from Blue Compact Dwarf Galaxies

open access: yes, 2011
We measured the X-ray fluxes from an optically-selected sample of blue compact dwarf galaxies (BCDs) with metallicities
Calzetti   +25 more
core   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Local structure of Amorphous carbon investigated by X-ray total scattering and RMC modeling

open access: yesScientific Reports
Amorphous carbon is a promising candidate as an energy storage material. In this paper, we performed an X-ray total scattering measurement, RMC modeling, and persistent homology analysis for amorphous carbon samples fabricated at two different heat ...
Masatsugu Yoshimoto   +2 more
doaj   +1 more source

Novel correction procedure for compensating thermal contraction errors in the measurement of the magnetic field of superconducting undulator coils in a liquid helium cryostat

open access: yesJournal of Synchrotron Radiation
Superconducting undulators (SCUs) can offer a much higher on-axis undulator field than state-of-the-art cryogenic permanent-magnet undulators with the same period and vacuum gap.
Barbara Marchetti   +4 more
doaj   +1 more source

Star Formation in Orion's L1630 Cloud: an Infrared and Multi-epoch X-ray Study

open access: yes, 2014
X-ray emission is characteristic of young stellar objects (YSOs) and is known to be highly variable. We investigate, via an infrared and multi-epoch X-ray study of the L1630 dark cloud, whether and how X-ray variability in young stellar objects is ...
Grosso, Nicolas   +6 more
core   +1 more source

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