Results 101 to 110 of about 1,383,288 (303)

Viscous Dark Energy Models with Variable G and Lambda

open access: yes, 2007
We consider a cosmological model with bulk viscosity ($\eta$) and variable cosmological $(\Lambda\propto \rho^{-\alpha}, \alpha=\rm const.$) and gravitational ($G$) constants. The model exhibits many interesting cosmological features.
Arbab A I   +4 more
core   +1 more source

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

open access: yesFEBS 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   +2 more
wiley   +1 more source

Multiple ETS family transcription factors bind mutant p53 via distinct interaction regions

open access: yesFEBS Letters, EarlyView.
Mutant p53 gain‐of‐function is thought to be mediated by interaction with other transcription factors. We identify multiple ETS transcription factors that can bind mutant p53 and found that this interaction can be promoted by a PXXPP motif. ETS proteins that strongly bound mutant p53 were upregulated in ovarian cancer compared to ETS proteins that ...
Stephanie A. Metcalf   +6 more
wiley   +1 more source

Effect of dimensionality on the charge-density-wave in few-layers 2H-NbSe$_2$

open access: yes, 2009
We investigate the charge density wave (CDW) instability in single and double layers, as well as in the bulk 2H-NbSe$_{2}$. We demonstrate that the density functional theory correctly describes the metallic CDW state in the bulk 2H-NbSe$_{2}$. We predict
Francesco Mauri   +5 more
core   +3 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS 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

Engineering properties of Gbafilo (Chrysobalanus icaco) fruits and kernels preparatory to primary processing

open access: yesAgricultura Tropica et Subtropica, 2012
The aim of the study was to determine the physical properties of gbafi lo fruit and kernel, namely, axial dimension, geometrical and arithmetic mean diameter, sphericity, aspect ratio, 1000 unit mass, surface area, true and bulk density, porosity angle ...
Davies Rotimi Moses   +1 more
doaj   +1 more source

Modification of Bulk Density, Flow Property and Crystallinity of Microcrystalline Cellulose Prepared from Waste Cotton. [PDF]

open access: yesMaterials (Basel), 2023
Tasnim S   +7 more
europepmc   +1 more source

Correlation of the scaling exponent of the diffusivity-density function in viscous liquids with their elastic properties

open access: yes, 2010
Fundamental thermodynamical concepts and a solid-state point defect elastic model are used to formulate a diffusivity-density scaling function for viscous liquids.
Papathanassiou, Anthony N.   +1 more
core   +1 more source

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