Results 51 to 60 of about 2,473,071 (281)

Two-dimensionally localized modes of a nano-scale gap plasmon waveguide [PDF]

, 2005
We report numerical analysis and experimental observation of two-dimensionally localized plasmonic modes guided by a nano-gap in a thin metal film. Dispersion, dissipation and field structure of these modes are analyzed using the finite-difference time ...
K. Yamaguchi, D. F. P. Pile, Gramotnev, Dmitri K., Haraguchi, Masanobu, T. Ogawa, T. Okamoto, Matsuzaki, Y., Vernon, Kristy C., Ogawa, Takeshi, Fukui, Masuo, Yamaguchi, K., M. Fukui, Y. Matsuzaki, Okamoto, Toshihiro, D. K. Gramotnev, M. Haraguchi, Pile, David F.P., K. C. Vernon   +17 more
core   +2 more sources

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Topological bands and localized vibration modes in quasiperiodic beams

New Journal of Physics, 2019
We investigate a family of quasiperiodic continuous elastic beams, the topological properties of their vibrational spectra, and their relation to the existence of localized modes.
Raj Kumar Pal, Matheus I N Rosa, Massimo Ruzzene   +2 more
doaj   +1 more source

Inter-ELM pedestal localized fluctuations in tokamaks: Summary of multi-machine observations

Nuclear Materials and Energy, 2019
A variety of experimental studies on pedestal localized fluctuations appearing in between crashes of edge localized modes (ELMs) across several tokamaks have been reviewed and summarized.
F.M. Laggner, A. Diallo, M. Cavedon, E. Kolemen   +3 more
doaj   +1 more source

Nonlinear localized modes in one-dimensional nanoscale dark-state optical lattices

Nanophotonics, 2022
Optical lattices (OLs) with conventional spatial periodic λ/2, formed by interfering the counterpropagating laser beams with wavelength λ, are versatile tools to study the dynamical and static properties of ultracold atoms. OLs with subwavelength spatial
Chen Zhiming, Zeng Jianhua
doaj   +1 more source

On the onset of type I edge localized modes [PDF]

Nuclear Fusion, 2009
The affiliation of the first author should be corrected to read G.Y. Antar, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA, Present address: American University of Beirut, Riad El-Solh, Beirut 1107 2020, Lebanon.The following Acknowledgment should be added: This work was supported in part by the US Department of Energy ...
Antar, G. Y., Krasheninnikov, S. I., Snyder, P. B., Moyer, R. A., Pugno, R., Gray, D. S.   +5 more
openaire   +3 more sources

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Anatomy of localized edge modes in laterally coupled waveguides [PDF]

We present a systematic micromagnetic study of standing spin-wave modes in infinitely long Permalloy strips with rectangular cross-section. Using a finite-element dynamic-matrix method, we first calculate the eigenfrequencies and the corresponding ...
Iurchuk, Vadym, Stienen, Sven, Lindner, Jürgen, Kákay, Attila   +3 more
core   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

RNA‐related functions of BRCA2 in transcription, replication, and genome stability

FEBS Letters, EarlyView.
Beyond its role in homologous recombination, BRCA2 regulates R‐loop homeostasis, DNA–RNA hybrid resolution, RNA polymerase II dynamics, and transcriptional activation. Disruption of any of these functions can contribute to genome instability, inflammatory signaling, and tumorigenesis. BRCA2 is a central tumor suppressor protein best known for its roles
Lucia Alvaro‐Aranda, Sreerama Chaitanya Sridhara, Aura Carreira   +2 more
wiley   +1 more source