Results 81 to 90 of about 161,960 (313)

Estimation of the characteristic energy of electron precipitation [PDF]

, 2002
International audienceData from simultaneous observations (on 13 February 1996, 9 November 1998, and 12 February 1999) with the IRIS, DASI and EISCAT systems are employed in the study of the energy distribution of the electron precipitation during ...
delPozo, C. F., del Pozo, C. F., Kosch, M. J., M. J. Kosch, F. Honary, Honary, F., C. F. del Pozo   +6 more
core   +1 more source

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

FEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty, Kelsi R. Hall, Zachary D. Tillett, Liam S. Turk, James S. Davies, Michael J. Currie, Hamish G. Brown, Sepideh Valimehr, Peter D. Mace, Andrew E. Whitten, Santosh Panjikar, Eric Hanssen, Rachel A. North, Renwick C.J. Dobson   +13 more
wiley   +1 more source

Ce doped SiO₂ optical fibers for remote radiation sensing and measurement [PDF]

, 2009
Scintillating materials, able to efficiently operate the conversion of energy absorbed in the form of ionizing radiation into light in the visible UV interval, are presently used in a wide class of applications as medical imaging, industrial inspection ...
Marco Brambilla, Marie Claire Cantone, Anna Vedda, Giampiero Tosi, Cannillo, Barbara, Cantone, Marie Cantone, Gilberto Brambilla, Eleonora Mones, M. Brambilla, G. Brambilla, Marco Petrovich, A. Vedda, B. Cannillo, Brambilla, Gilberto, Barbara Cannillo, Norberto Chiodini, Tosi, Gaimpiero, Vedda, Anna, I. Veronese, Fasoli, Mauro, Mauro Fasoli, Mones, Eleonora, E. Mones, M. Fasoli, A. Lauria, M. Petrovich, G. Tosi, Ivan Veronese, Lauria, Alessandro, Brambilla, Marco, Alessandro Lauria, M.C. Cantone, N. Chiodini, Petrovich, Marco, F. Moretti, Chiodini, Norberto, Moretti, Federico, Veronese, Ivan, Federico Moretti   +38 more
core   +1 more source

Stable ultrafast graphene hot-electron source on optical fiber

Nature Communications
A stable and durable ultrafast electron source is highly desirable for sophisticated vacuum electron technologies. However, free-space excitations based on ultrahigh-power or deep-ultraviolet pulsed lasers usually cause cathode material damage and ...
Guangjie Yao, Hao Hong, Xu Zhou, Kaifeng Lin, Huazhan Liu, Yilong You, Chang Liu, Ke Chen, Chi Li, Jianbo Yin, Zhujun Wang, Xuewen Fu, Qing Dai, Dapeng Yu, Kaihui Liu   +14 more
doaj   +1 more source

Near-field imaging of optical diffraction radiation generated by a 7-GeV electron beam

Physical Review Special Topics. Accelerators and Beams, 2007
We report the first unambiguous demonstration of near-field imaging of optical diffraction radiation (ODR). The source of the ODR was an aluminum metal reflective surface with a 7-GeV electron beam passing nearby its single edge.
A. H. Lumpkin, W. J. Berg, N. S. Sereno, D. W. Rule, C.-Y. Yao   +4 more
doaj   +1 more source

Super‐Refractory Status Epilepticus (SRSE) in a Patient With Compound Heterozygous OPA1 Variants: Case Report and Literature Review

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Super‐Refractory Status Epilepticus (SRSE) is a rare, life‐threatening neurological emergency with unclear etiology in many cases. Mitochondrial dysfunction, often due to disease‐causing genetic variants, is increasingly recognized as a cause, with each gene producing distinct pathophysiological mechanisms.
Pouria Mohammadi, Lara Basovic, Christopher Michael McGraw   +2 more
wiley   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Spectral studies of small-scale auroral structure and plasma instability in the high-latitude ionosphere [PDF]

, 2008
Optical measurements of small-scale auroral structures are here combined with spectrographic data in order to study the relationship between auroral morphology and the energy characteristics of the precipitating population. It is shown that rayed auroral
Sullivan, Joanna Mary
core  

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source