Results 51 to 60 of about 949,044 (283)
Hydrogen maser - Measurement of wall shift with a flexible bulb [PDF]
, 1970 Flexible bulb is squeezed to change mean free path of hydrogen atoms, and to change bulb's volume without changing its surface area. Volumes in the different configurations are measured to learn the change in mean free path and calculate wall shift ...
Brenner, D.
core +1 more source
Laser-free slow atom source [PDF]
Physical Review A, 1999 A slow atom source, which does not rely on lasers, has been developed and characterized. The device, acting as an atomic low-pass velocity filter, utilizes permanent magnets to passively select the slow atoms present in a thermal atomic beam. Slow atoms are guided along a curved, conduction-limited tube by an octupole magnetic field, while fast atoms ...
Ghaffari, B. +5 more
openaire +2 more sources
Cell wall target fragment discovery using a low‐cost, minimal fragment library
FEBS 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
Error correction in ensemble registers for quantum repeaters and quantum computers
, 2007 We propose to use a collective excitation blockade mechanism to identify errors that occur due to disturbances of single atoms in ensemble quantum registers where qubits are stored in the collective population of different internal atomic states.
E. Brion +4 more
core +1 more source
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Resonance interaction energy between two entangled atoms in a photonic bandgap environment
Scientific Reports, 2018 We consider the resonance interaction energy between two identical entangled atoms, where one is in the excited state and the other in the ground state. They interact with the quantum electromagnetic field in the vacuum state and are placed in a photonic-
Valentina Notararigo +2 more
doaj +1 more source
Structural biology of ferritin nanocages
FEBS 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
Atomic Floquet physics revealed by free electrons
Physical Review Research, 2022 We theoretically investigate the ability of free electrons to probe the nonlinear Floquet dynamics of atoms under intense illumination. We observe multiple features in the electron energy-loss spectra associated with electron-photon exchanges and Floquet resonances.
Arqué López, Eduardo +2 more
openaire +3 more sources
Tau acetylation at K331 has limited impact on tau pathology in vivo
FEBS Letters, EarlyView.We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto +3 more
wiley +1 more source
Quantum communication and the creation of maximally entangled pairs of atoms over a noisy channel [PDF]
, 1997 We show how to create maximally entangled EPR pairs between spatially distant atoms, each of them inside a high-Q optical cavity, by sending photons through a general, noisy channel, such as a standard optical fiber.
Briegel, H. -J. +4 more
core +1 more source