Results 31 to 40 of about 401,467 (301)

Direct observation of oxygen-vacancy formation and structural changes in Bi2WO6 nanoflakes induced by electron irradiation

open access: yesBeilstein Journal of Nanotechnology, 2019
The prominent role of oxygen vacancies in the photocatalytic performance of bismuth tungsten oxides is well recognized, while the underlying formation mechanisms remain poorly understood.
Hong-long Shi   +4 more
doaj   +1 more source

Parametric resonance of a two-dimensional electron gas under bichromatic irradiation

open access: yes, 2004
In an ultrahigh mobility 2D electron gas, even a weak nonparabolicity of the electron dispersion, by violating Kohn's theorem, can have a drastic effect on dc magnetotransport under ac drive. We study theoretically the manifestation of this effect in the
Joas, C., Raikh, M. E., von Oppen, F.
core   +1 more source

Secondary electron yield of Cu technical surfaces: Dependence on electron irradiation

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2013
The secondary emission yield (SEY) properties of colaminated Cu samples for LHC beam screens are correlated to the surface chemical composition determined by x-ray photoelectron spectroscopy. The surface of the as-received samples is characterized by the
R. Larciprete   +4 more
doaj   +1 more source

Stone-Wales--type transformations in carbon nanostructures driven by electron irradiation

open access: yes, 2011
Observations of topological defects associated with Stone-Wales-type transformations (i.e., bond rotations) in high resolution transmission electron microscopy (HRTEM) images of carbon nanostructures are at odds with the equilibrium thermodynamics of ...
Kaiser, U.   +5 more
core   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

Effect of heat load on microstructural development in an irradiated low alloy steel

open access: yesNuclear Materials and Energy, 2018
To investigate the influence of heat load on microstructure change, we conducted in-situ experiments of annealing and irradiation for a model alloy (Fe-0.75Mn-0.47Mo-0.45Ni) using a multi-beam high voltage electron microscope.
Shunta Goto, N. Hashimoto
doaj   +1 more source

Effects of Electronic Irradiation on the Characteristics of the Silicon Magnetic Sensitive Transistor

open access: yesMicromachines, 2023
This work researched the effects of irradiation on the current-voltage characteristics and voltage magnetic sensitivity of the silicon magnetic sensitive transistor (SMST). The 1-MeV electron irradiation source was used to irradiate the SMST.
Zhipeng Yu   +6 more
doaj   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Comparative Effects of Electron Beam Irradiation and Ultra-high Pressure Treatment on the Flavor of Jujube pulp [PDF]

open access: yesShipin Kexue
This study investigated the effects of pasteurization (80 ℃ for 30 min), electron beam irradiation (3, 5 and 7 kGy) and ultra-high pressure treatment (400, 500 and 600 MPa for 6 min) on the flavor of jujube pulp.
CHEN Meiling, JIAN Lei, YUAN Qiuyan, JIA Mingyue, GUI Xiangru, XU Huaide
doaj   +1 more source

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