Results 81 to 90 of about 2,234,030 (304)

The Beam Plasma Interactions Experiment: An Active Experiment Using Pulsed Electron Beams

Frontiers in Astronomy and Space Sciences, 2020
The 1970s and 1980s were heydays for using active electron beam experiments to probe some of the fundamental physical processes that occur throughout the heliosphere and in astrophysical contexts.
Geoffrey D. Reeves, Gian Luca Delzanno, Philip A. Fernandes, Kateryna Yakymenko, Bruce E. Carlsten, John W. Lewellen, Michael A. Holloway, Dinh C. Nguyen, Robert F. Pfaff, William M. Farrell, Douglas E. Rowland, Marilia Samara, Ennio R. Sanchez, Emma Spanswick, Eric F. Donovan, Vadim Roytershteyn   +15 more
doaj   +1 more source

Versatile vector tools for efficient protein screening across multiple expression systems

FEBS Open Bio, EarlyView.
A unified vector toolkit enables rapid protein expression screening across E. coli, insect, and mammalian cells. A single primer pair amplifies the target gene, which is inserted into any vector via a standardized interface. This streamlined workflow eliminates repeated cloning steps, accelerating the identification of optimal expression conditions for
Zhimin Zhu, Yaqing Liu, Lei Qin, Feng Yu, Qisheng Wang, Yahui Liu   +5 more
wiley   +1 more source

Compact source of positron beams with small thermal emittance

Physical Review Accelerators and Beams, 2023
We investigate electrostatic traps as a novel source of positron beams for accelerator physics applications. Penning-Malmberg (PM) traps are commonly employed in low-energy antimatter experiments.
Rafi Hessami, Spencer Gessner
doaj   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

FEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova, Andrej Mirossay, Erik Sedlak   +2 more
wiley   +1 more source

Comparative assessment of crystallographic and cryo‐EM models in the Protein Data Bank

FEBS Open Bio, EarlyView.
Raw data obtained by X‐ray crystallography or cryo‐EM result in experimental maps, ultimately fitted by atomic models. Although the physical principles are different, the final results can be viewed, compared, and evaluated in the same way. With cryogenic electron microscopy (cryo‐EM) on track to surpass X‐ray crystallography as the preferred method ...
Alexander Wlodawer, Pawel Rubach, Zbigniew Dauter, Wojciech Dec, Dariusz Brzezinski, Marta Kulik, Wladek Minor, Mariusz Jaskolski   +7 more
wiley   +1 more source

Characterization of the key membrane protein cytochrome Cyc2 from Ghiorsea bivora

FEBS Open Bio, EarlyView.
This study reports the first detailed biochemical analysis of Cyc2TAG1_1, a cytochrome protein involved in microbial iron oxidation. We produced and purified this enzyme in E. coli, then measured its iron‐oxidizing efficiency, and characterized its electrical and structural properties.
Josiane Azizi, Alain Dolla, Frauke Baymann, Celine Rommevaux, Latifa Elantak, Helene Gaussier, Matthieu Nouailler   +6 more
wiley   +1 more source

CAS - CERN Accelerator School: Advanced Accelerator Physics Course

, 2014
This report presents the proceedings of the Course on Advanced Accelerator Physics organized by the CERN Accelerator School. The course was held in Trondheim, Norway from 18 to 29 August 2013, in collaboration with the Norwegian University of Science and
Herr, W, Herr, W., FERRARIO, MASSIMO, MIGLIORATI, Mauro, PALUMBO, Luigi   +4 more
core   +1 more source

Subradiant spontaneous undulator emission through collective suppression of shot noise

Physical Review Special Topics. Accelerators and Beams, 2015
The phenomenon of Dicke’s subradiance, in which the collective properties of a system suppress radiation, has received broad interest in atomic physics.
D. Ratner, E. Hemsing, A. Gover, A. Marinelli, A. Nause   +4 more
doaj   +1 more source

Searches for decays of new particles in the DUNE Multi-Purpose near Detector

Journal of High Energy Physics, 2020
One proposed component of the upcoming Deep Underground Neutrino Experiment (DUNE) near detector complex is a multi-purpose, magnetized, gaseous argon time projection chamber: the Multi-Purpose Detector (MPD).
Jeffrey M. Berryman, André de Gouvêa, Patrick J. Fox, Boris J. Kayser, Kevin J. Kelly, Jennifer L. Raaf   +5 more
doaj   +1 more source

Hydrogel platforms for 3D cardiac tissue engineering and fibrotic disease modelling

FEBS Open Bio, EarlyView.
Hydrogel‐based cardiac tissue models are advancing our understanding of heart health and disease. By incorporating electrical conductivity, aligned structures, and tunable mechanical properties, these platforms better replicate the complex environment of native heart tissue.
Harrison Porritt, Annika Winbo, Jenny Malmström   +2 more
wiley   +1 more source