Results 61 to 70 of about 1,009,075 (346)

Microscopic models of hardness [PDF]

Journal of Superhard Materials, 2010
Recent developments in the field of microscopic hardness models have been reviewed. In these models, the theoretical hardness is described as a function of the bond density and bond strength. The bond strength may be characterized by energy gap, reference potential, electron-holding energy or Gibbs free energy, and different expressions of bond ...
Gao, F.M., Gao, L.H.
openaire   +2 more sources

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Transport of polymer particles in a oil-water flow in porous media: enhancing oil recovery [PDF]

, 2018
We study a heuristic, core-scale model for the transport of polymer particles in a two phase (oil and water) porous medium. We are motivated by recent experimental observations which report increased oil recovery when polymers are injected after the ...
Keilegavlen, Eirik, Kokubun, Max A. Endo, Kumar, Kundan, Radu, Florin A., Spildo, Kristine   +4 more
core   +2 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Effective macroscopic dynamics of stochastic partial differential equations in perforated domains

, 2006
An effective macroscopic model for a stochastic microscopic system is derived. The original microscopic system is modeled by a stochastic partial differential equation defined on a domain perforated with small holes or heterogeneities.
Allaire G., Brahim‐Otsmane S., Briane M., Cioranescu D., Cioranescu D., Daomin Cao, Jinqiao Duan, Maso G. D., Timofte C., Wei Wang, Zhikov V. V., Zhikov V. V.   +11 more
core   +2 more sources

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Doping Effects on the Multiferroic Properties of KNbO₃ Nanoparticles

Magnetochemistry
The magnetization, polarization, and band-gap energy in pure and ion-doped KNbO3 (KNO) bulk and nanoparticles (NPs) are investigated theoretically using a microscopic model and Green’s function theory. It is shown that KNO NPs are multiferroic.
A. T. Apostolov, I. N. Apostolova, J. M. Wesselinowa   +2 more
doaj   +1 more source

Universal spectral correlations of the Dirac operator at finite temperature [PDF]

, 1997
Using the graded eigenvalue method and a recently computed extension of the Itzykson-Zuber integral to complex matrices, we compute the $k$-point spectral correlation functions of the Dirac operator in a chiral random matrix model with a deterministic ...
Abramowitz, Akemann, Banks, Bohigas, Brézin, Dyson, Dyson, Dyson, Dyson, Efetov, Guhr, Guhr, Guhr, Guhr, Haake, Halasz, Halasz, Halasz, Halasz, Jackson, Jackson, Jackson, Jackson, Janik, Janik, Janik, Jurkiewicz, Leutwyler, Mehta, Nagao, Nagao, Nishigaki, Nowak, Nowak, Nowak, Shuryak, Simonov, Slevin, Smilga, Stephanov, Stephanov, Thomas Guhr, Tilo Wettig, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Verbaarschot, Wettig, Wigner   +54 more
core   +3 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

A Theoretical Study of the Effects of Co-Doping Ions at K and Nb Sites on the Properties of KNbO₃ Nanoparticles

Nanomaterials
Using a microscopic model and Green’s function theory, we have investigated the co-doping effect on ferroelectric KNbO3 nanoparticles. Let us emphasize that while the doping with transition metal ions at the Nb site leads an increase in the ...
Angel T. Apostolov, Iliana N. Apostolova, Julia M. Wesselinowa   +2 more
doaj   +1 more source