Results 61 to 70 of about 276,074 (303)

The role and implications of mammalian cellular circadian entrainment

FEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

A Generalized Neutrosophic Metric Space and Coupled Coincidence Point Results

, 2021
This work introduces the notion of J-Neutrosophic Metric Space using the concept of Neutrosophic Sets. We analyze and extend some coupled coincidence point results on θJN -coupled and compatible mappings G : A × A → A and h : A → A where G has the mixed h-monotone property. We support the proposed result with suitable example.
Jeyaraman Mathuraiveeran, Suganthi Mookiah   +1 more
openaire   +1 more source

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

Coupled Coincidence Point Results for (ψ,α,β)-Weak Contractions in Partially Ordered Metric Spaces

Journal of Applied Mathematics, 2012
In this paper coupled coincidence points of mappings satisfying a nonlinear contractive condition in the framework of partially ordered metric spaces are obtained. Our results extend the results of Harjani et al. (2011).
A. Razani, V. Parvaneh
doaj   +1 more source

Reconfigurable controlled two-qubit operation on a quantum photonic chip [PDF]

, 2011
Integrated quantum photonics is an appealing platform for quantum information processing, quantum communication and quantum metrology. In all these applications it is necessary not only to be able to create and detect Fock states of light but also to ...
Laing, A., Li, H. W., Lobino, M., Matthews, J. C. F., Niskanen, A. O., O'Brien, J. L., Politi, A., Przeslak, S., Shadbolt, P., Thompson, M. G.   +9 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

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

Coupled Fixed Point Theorems with Rational Type Contractive Condition in a Partially Ordered G-Metric Space

Journal of Mathematics, 2014
Coupled fixed point theorems for a map satisfying mixed monotone property and a nonlinear, rational type contractive condition are established in a partially ordered G-metric space.
K. Chakrabarti
doaj   +1 more source

DeWitt-Schwinger Renormalization and Vacuum Polarization in d Dimensions

, 2009
Calculation of the vacuum polarization, $$, and expectation value of the stress tensor, $$, has seen a recent resurgence, notably for black hole spacetimes. To date, most calculations of this type have been done only in four dimensions.
A. L. Fetter, B. L. Hu, B. S. DeWitt, I. Gradshteyn, José P. S. Lemos, M. Abramowitz, M. S. Fawcett, N. D. Birrell, P. B. Gilkey, R. T. Thompson, R. M. Wald, S. A. Fulling, S. G. Mamaev   +12 more
core   +1 more source

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