Results 51 to 60 of about 164,228 (329)

X-ray Phase Contrast Imaging from Synchrotron to Conventional Sources: A Review of the Existing Techniques for Biological Applications

Applied Sciences, 2022
Since the seminal work of Roentgen, X-ray imaging mainly uses the same physical phenomenon: the absorption of light by matter. Thanks to third-generation synchrotrons that provide a high flux of quasi-coherent X-rays, we have seen in recent years new ...
Laurene Quenot, Sylvain Bohic, Emmanuel Brun   +2 more
doaj   +1 more source

Short-Wavelength Free-Electron Lasers

IEEE Photonics Journal, 2010
This paper presents a short review of the development of and the motivation for short-wavelength free-electron lasers. The first observation of coherent X-ray production was reported from the Linac Coherent Light Source in April 2009.
Keith A. Nugent, William A. Barletta
doaj   +1 more source

SUPERLUMINAL SYNCHROTRON RADIATION

Resource-Efficient Technologies, 2018
To avoid complex computations based on wide Fourier expansions, the electromagnetic field of synchrotron radiation (SR) was analyzed using Lienard–Wiechert potentials in this work. The retardation equation was solved for ultrarelativistic movement of rotating charge at distances up to the trajectory radius.
Aginian, M. A., Arutunian, S. G., Lazareva, E. G., Margaryan, A. V.   +3 more
openaire   +3 more sources

The use of synchrotron edge topography to study polytype nearest neighbour relationships in SiC [PDF]

, 1995
A brief review of the phenomenon of polytypism is presented and its prolific abundance in Silicon Carbide discussed. An attempt has been made to emphasise modern developments in understanding this unique behaviour. The properties of Synchrotron Radiation
Amelinckx, Barnes, Baumhauer, Bogdan, Bogdan, Burton, Cheng, Cheng, Durovic, Farkas-Jahnke, Fisher, Fisher, Fisher, Fisher, Frank, G.R. Fisher, Gasilova, Golightly, Goodby, Haag, Hayashi, Inoue, J.F. Kelly, Jagodzinski, Jagodzinski, Jagodzinski, Jepps, Kabra, Kelly, Knippenburg, Kozielski, Krishna, Kumar, Kuo, Lang, Lely, Loubser, Mardix, Mardix, Mitchell, Mitchell, Moore, P. Barnes, Pandey, Pandey, Pandey, Pandey, Price, Price, Ramasesha, Ramasesha, Ramsdell, Ramsdell, Schaffer, Schneer, Singh, Smith, Trigunayat, Van Loan, Verma, Verma, Yeomans, Zhdanov, Zhdanov, Zvyagin, Zvyagin   +65 more
core   +1 more source

Performance comparison of Nuclear Magnetic Resonance and FerriMagnetic Resonance field markers for the control of low-energy Synchrotrons

Journal of Physics: Conference Series, 2018
A field marker is a magnetic field sensor used in synchrotrons, which provides a digital trigger when the magnetic field reaches a pre-set threshold. This paper describes the results of an in-situ measurement performed on the Extra Low ENergy Antiproton (
Christian Grech, Anthony Beaumont, M. Buzio, N. Sammut   +3 more
semanticscholar   +1 more source

Nonlinear Longitudinal Waves in High Energy Stored Beams [PDF]

, 1999
We solve the Vlasov equation for the longitudinal distribution function and find stationary wave patterns when the distribution in the energy error is Maxwellian.
Tzenov, Stephan I.
core   +4 more sources

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

FEBS 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, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Linear accelerators

, 2013
Radio-frequency linear accelerators are used as injectors for synchrotrons and as stand-alone accelerators for the production of intense particle beams, thanks to their ability to accelerate high beam currents at high repetition rates.
Vretenar, Maurizio
core   +2 more sources

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

New Physics at the International Facility for Antiproton and Ion Research (FAIR) Next to GSI

, 2007
The project of the international Facility for Antiproton and Ion Research (FAIR), co-located to the GSI facility in Darmstadt, has been officially started on November 7, 2007.
Augustin, I., Gutbrod, H. H., Kraemer, D., Langanke, K., Stoecker, H.   +4 more
core   +1 more source