Results 51 to 60 of about 648,162 (256)

Symmetric Hubbard Systems with Superconducting Magnetic Response

, 2003
In purely repulsive, $C_{4v}$-symmetric Hubbard clusters a correlation effect produces an effective two-body attraction and pairing; the key ingredient is the availability of W=0 pairs, that is, two-body solutions of appropriate symmetry.
Callegari, Agnese, Cini, Michele, Perfetto, Enrico, Stefanucci, Gianluca   +3 more
core   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

GINZBURG-LANDAU THEORY OF VORTICES IN $d$-WAVE SUPERCONDUCTORS

, 1995
Ginzburg-Landau theory is used to study the properties of single vortices and of the Abrikosov vortex lattice in a $d_{x^2-y^2}$ superconductor. For a single vortex, the $s$-wave order parameter has the expected four-lobe structure in a ring around the ...
A. A. Abrikosov, A. J. Berlinsky, A. L. Fetter, A. Maeda, B. Keimer, C. C. Tsuei, C. Kallin, G. E. Volovik, K. A. Moler, M. Franz, M. M. Doria, P. I. Soininen, P. I. Soininen, P. Kumar, R. Joynt, T. K. Worthington, W. H. Kleiner, W. N. Hardy, Y. Hidaka, Y. Ren   +19 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

On Weakly 2-Invo Clean Rings With Some Properties in Graph Theory

International Journal of Mathematics and Mathematical Sciences
The concept of a weakly two-involution clean ring is presented; it is a generalization of two-involution clean ring, which allows the addition of more elements to a ring, which will be observed in its graph theoretic representation.
Salim Ghadeer Salim, Raida Dawood Mahmood, Ahmed Mohammed Ali   +2 more
doaj   +1 more source

Deep neural network-based automatic metasurface design with a wide frequency range

Scientific Reports, 2021
Beyond the scope of conventional metasurface, which necessitates plenty of computational resources and time, an inverse design approach using machine learning algorithms promises an effective way for metasurface design.
Fardin Ghorbani, Sina Beyraghi, Javad Shabanpour, Homayoon Oraizi, Hossein Soleimani, Mohammad Soleimani   +5 more
doaj   +1 more source

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, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Non-circular Gas Kinematics and Star Formation in the Ringed Galaxy NGC 4736

, 2000
We analyze the gas kinematics and star formation properties of the nearby RSab galaxy NGC 4736 using interferometric and single-dish CO(1-0) data and previously published Halpha and HI data.
Aalto S., Athanassoula E., Begeman K. G., Block D. L., Block D. L., Bloemen J. B. G. M., Bosma A., Braun R., Buta R., Combes F., Dahmen G., Elmegreen B. G., Friedli D., Friedli D., Gerin M., Heckman T. M., Huchtmeier W. K., Kimura T., Kotilainen J. K., Laine S., Leo Blitz, Louis P. D., Mollenhoff C., Mulder P. S., Mulder P. S., Roche P. F., Shioya Y., Steer D. G., Strong A. W., Tony Wong, van der Kruit P. C., van der Kruit P. C.   +31 more
core   +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

Crystal structure and optical spectroscopic analyses of (E)-3-(1H-indol-2-yl)-1-(4-nitrophenyl)prop-2-en-1-one hemihydrate

Acta Crystallographica Section E: Crystallographic Communications, 2018
The asymmetric unit of the title compound, 2C17H12N2O3·H2O comprises two molecules of (E)-3-(1H-indol-2-yl)-1-(4-nitrophenyl)prop-2-en-1-one and a water molecule. The main molecule adopts an s-cis configuration with respect to the C=O and C=C bonds.
Muhamad Fikri Zaini, Ibrahim Abdul Razak, Wan Mohd Khairul, Suhana Arshad   +3 more
doaj   +1 more source