Results 61 to 70 of about 87,663 (288)
Birkhoff's order-convergence in partially ordered sets
Topology and its Applications, 2016 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sun, Tao, Li, Qingguo, Guo, Lankun
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Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
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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
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An extended inequality approach for evaluating decision making units with a single output
Journal of Inequalities and Applications, 2017 In this work, an extended evaluation approach for decision making units (DMUs) with a single output is proposed. Firstly, the input and output data for each DMU are changed in the same proportion until all the outputs are equal, and then the coordinate ...
Xiao-Li Meng, Fu-Gui Shi
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Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer
FEBS Letters, EarlyView.Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani +4 more
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Advances in Difference Equations, 2019 In this research work, the necessary and sufficient conditions of a coupled coincidence point of certain type of generalized contractions are explored. These results are considered under JS-metric spaces equipped with a partial order.
A. H. Ansari +3 more
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Best Proximity Point for the Sum of Two Non-Self-Operators
Journal of Mathematics, 2020 In the present paper, we focus our attention on the existence of the fixed point for the sum of the cyclic contraction and the noncyclic accretive operator. Also, we study the best proximity point for the sum of two non-self-mappings.
V. Pragadeeswarar, R. Gopi, M. De la Sen
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Shaprly transitive partially ordered sets
Discrete Mathematics, 1986 If \(\Lambda\) is a p.o. set, \(A=Aut(\Lambda,\leq)\) will denote its group of automorphisms. If for each \(\lambda_ 1,\lambda_ 2\in \Lambda\) there is a unique \(a\in A\) such that \(\lambda_ 1a=\lambda_ 2\), we say that \(\Lambda\) is sharply transitive. It is easily seen that any sharply transitive p.o. set is connected or has just 2 elements.
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Asymptotic enumeration of partially ordered sets [PDF]
Pacific Journal of Mathematics, 1980 The author define the entropy function S( ρ)=Lim n- ∞ 2n −2 lnN (n, ρ ), where N(n, ρ ) is the number of distinct partial order relations which may be defined on a set of n elements such that a fraction ρ of the possible n(n−1)/2 pairs are comparable.We derive upper bounds to S(ρ) to show that S(ρ) .699.
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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
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