Results 101 to 110 of about 715,950 (248)

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

Impact d'itinéraires culturaux du maïs sur les transferts d'herbicides par ruissellement

Sciences, Eaux & Territoires, 2001
L'incidence de différents itinéraires techniques de la culture du maïs sur les transferts d'herbicides a été analysée à l'échelle parcellaire, sur deux types de sol, sous pluies simulées et naturelles. Le désherbage mixte, comparativement à un traitement
D. HEDDADJ, C. GASCUEL-ODOUX
doaj  

An extensive analysis of SOL properties in high-δ plasmas in ASDEX Upgrade

Nuclear Fusion
A set of dedicated H-mode discharges with constant heating power combining Neutral Beam Injection and Electron Cyclotron Resonance Heating have been executed at the ASDEX Upgrade tokamak using a high triangularity magnetic geometry in order to ...
A. Redl, T. Eich, N. Vianello, J. Adamek, M. Bernert, G. Birkenmeier, D. Brida, P. David, M. Faitsch, R. Fischer, G. Grenfell, R. Ochoukov, V. Rohde, B. Tal, M. Dreval, the ASDEX Upgrade Team, the EUROfusion Tokamak Exploitation Team   +16 more
doaj   +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

Operation of a Grid-Forming Converter Controlled by the Flux Vector

IEEE Access
The electric power system is undergoing a significant transition. Renewable energy generation capacity has increased, leading to the displacement of synchronous generators (SG) and a growing concern about grid stability due to the decrease of rotating ...
Juan Dolado Fernandez, Eduardo Rausell Navarro, Jose Luis Rodriguez Amenedo, Joaquin Eloy-Garcia, Santiago Arnaltes Gomez   +4 more
doaj   +1 more source

Prospecting the protein design landscape

FEBS Letters, EarlyView.
This review outlines the current state of various protein design approaches. We discuss the current possibilities enabled by recently released tools, highlight future avenues to pursue in protein design, and underscore the crucial role of key databases and resources for successful protein design workflows.
Jakob R. Riccabona, Katharina T. Stonig, Jens Meiler, Clara T. Schoeder, Monica L. Fernández‐Quintero   +4 more
wiley   +1 more source

Analysis of energy dissipation in resistive superconducting fault-current limiters for optimal power system performance [PDF]

, 2011
Fault levels in electrical distribution systems are rising due to the increasing presence of distributed generation, and this rising trend is expected to continue in the future.
Burt, Graeme, Bright, C.G., Blair, Steven Macpherson, Booth, Campbell, Singh, Nand   +4 more
core  

First observation of beta-induced Alfvén eigenmode inside the edge magnetic island on the J-TEXT tokamak

Nuclear Fusion
Experiments conducted on the J-TEXT tokamak have provided the first evidence that the Beta-induced Alfvén Eigenmode (BAE) is localized inside the isolated helical flux tube of its edge m / n = 3/1 magnetic island. The observations show that the BAE forms
J. Yang, Y. Liang, N.C. Wang, P. Shi, S. Zhou, Z.P. Chen, Z.H. Jiang, F.Y. Mao, J.K. Hua, C.K. Li, Q.H. Yang, D. Li, P. Drews, A. Knieps, E. Wang, S. Xu, H.M. Xiang, J.Q. Cai, J. Huang, Y.C. Gao, J.W. Liu, Y. Luo, L. Liao, Y.T. Yang, W. Xie, Z.Y. Chen, Y.H. Ding, the J-TEXT Team   +27 more
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Experimental characteristics of lost fast negative ions on EAST tokamak

Nuclear Fusion
It is the first time that fast negative-ion loss signals are observed by Fast-ion Loss Detector (FILD) and analyzed in EAST neutral beam injection experiment.
Z.X. Zhang, J. Huang, J.F. Chang, C.R. Wu, J. Galdon-Quiroga, A. Snicker, M. Isobe, K. Ogawa, K.Y. He, S.S. Wang, Y.X. Sun, X.H. Wang, the EAST Team   +12 more
doaj   +1 more source