Results 41 to 50 of about 3,858,273 (345)

Multiwavelength Observations of the BL Lacertae Object PKS 2155-304 with XMM-Newton [PDF]

open access: yes, 2006
The optical-UV and X-ray instruments on-board XMM-Ndewton provide an excellent opportunity to perform simultaneous observations of violently variable objects over a broad wavelength range.
Bai, J. M.   +5 more
core   +2 more sources

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

open access: yesFEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii   +8 more
wiley   +1 more source

MHz X-ray photon correlation spectroscopy using an acoustic levitator at the European XFEL

open access: yesJournal of Synchrotron Radiation
The structural and dynamical properties of soft-matter systems play an important role in crystallization and nucleation theory. Despite their significance, the dynamical properties are still poorly understood because of experimental constraints and the ...
Wonhyuk Jo   +10 more
doaj   +1 more source

Crystallization behavior of ion beam sputtered HfO2 thin films and its effect on the laser-induced damage threshold

open access: yesJournal of the European Optical Society-Rapid Publications, 2021
In this work, we present our results about the thermal crystallization of ion beam sputtered hafnia on 0001 SiO2 substrates and its effect on the laser-induced damage threshold (LIDT).
Zoltán Balogh-Michels   +8 more
doaj   +1 more source

The anti‐CRISPR protein AcrIE8.1 inhibits the type I‐E CRISPR‐Cas system by directly binding to the Cascade subunit Cas11

open access: yesFEBS Letters, EarlyView.
In this study, we present the structure of AcrIE8.1, a previously uncharacterized anti‐CRISPR protein that inhibits the type I‐E CRISPR‐Cas system. Through a combination of structural and biochemical analyses, we demonstrate that AcrIE8.1 directly binds to the Cas11 subunit of the Cascade complex to inhibit the CRISPR‐Cas system.
Young Woo Kang, Hyun Ho Park
wiley   +1 more source

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

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

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

X-ray observations of Be/X-ray binaries in the SMC

open access: yes, 2003
(shortened) Fifteen Be/X-ray binaries and candidates in the SMC were observed serendipitously with the EPIC instruments of XMM-Newton during two observations of SNR 0047-73.5 and SNR 0103-72.6 in October 2000.
Apparao   +56 more
core   +1 more source

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