Results 41 to 50 of about 302,537 (306)

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Surface morphologies, chemical compositions and luminescent properties of ZnO thin films flattened by ion milling procedure

Results in Surfaces and Interfaces, 2023
The luminescent properties of ZnO thin films have been developed to form a nanometric light source for an electron beam-excitation assisted optical microscope.
Kei Hosomi, Wataru Inami, Yoshimasa Kawata   +2 more
doaj   +1 more source

Electronic and atomic kinetics in solids irradiated with free-electron lasers or swift-heavy ions

, 2015
In this brief review we discuss the transient processes in solids under irradiation with femtosecond X-ray free-electron-laser (FEL) pulses and swift-heavy ions (SHI).
Medvedev, N., Volkov, A. E., Ziaja, B.
core   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

The investigation of the carbon on irradiation hardening and defect clustering in RPV model alloy using ion irradiation and OKMC simulation

Nuclear Engineering and Technology
The precipitation of solutes is a major cause of irradiation hardening and embrittlement limiting the service life of reactor pressure vessel (RPV) steels. Impurities play a significant role in the formation of precipitation in RPV materials.
Yitao Yang, Jianyang Li, Chonghong Zhang
doaj   +1 more source

Investigation of the effect of low energy ion beam irradiation on mono-layer graphene

AIP Advances, 2013
In this paper, the effect of low energy irradiation on mono-layer graphene was studied. Mono-layer graphene films were irradiated with B, N and F ions at different energy and fluence. X-ray photoelectron spectroscopy indicates that foreign ions implanted
Yijun Xu, Kun Zhang, Christoph Brüsewitz, Xuemei Wu, Hans Christian Hofsäss   +4 more
doaj   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

Deuterium retention in heavy-ion and helium-ion sequentially irradiated tungsten

Nuclear Fusion
Neutron irradiation as well as the presence of helium (He) significantly affects fuel inventory in plasma-facing materials. To investigate the synergistic effects of neutron and He irradiation on deuterium (D) retention behaviors in tungsten, heavy- and ...
Hong Zhang, Xuexi Zhang, Yuhong Li, Peng Wang, Li Qiao   +4 more
doaj   +1 more source

Ion Accelerator Facility of the Wakasa Wan Energy Research Center for the Study of Irradiation Effects on Space Electronics

Quantum Beam Science, 2021
The core facility of the Wakasa Wan Energy Research Center (WERC) consists of three ion accelerators: a synchrotron, a tandem accelerator and an ion-implanter.
Satoshi Hatori, Ryoya Ishigami, Kyo Kume, Kohtaku Suzuki   +3 more
doaj   +1 more source

The influence of Ga$^+$-irradiation on the transport properties of mesoscopic conducting thin films

, 2010
We studied the influence of 30keV Ga$^+$-ions -- commonly used in focused ion beam (FIB) devices -- on the transport properties of thin crystalline graphite flake, La$_{0.7}$Ca$_{0.3}$MnO$_3$ and Co thin films.
A Molle, Bridoux G Barzola-Quiquia J Bern F Böhlmann W Esquinazi P Ziese M, de la Pierre M, F Bern, Fernández-Pacheco A, G Bridoux, Inagaki M, J Barzola-Quiquia, Matsui S, P Esquinazi, S Dusari, Stroud R M Browing V M Byers J M Chrisey D B Fuller-Mora W W Grabowski K S Horwitz J S Kim J Knies D L Osofsky M S, Ziegler J F, Ziegler J F   +13 more
core   +1 more source