Results 61 to 70 of about 665,193 (301)

On the dimension of partially ordered sets

open access: yesDiscrete Mathematics, 1981
AbstractWe study the topic of the title in some detail. The main results are summarized in the first four paragraphs of this paper.
openaire   +2 more sources

The multidrug and toxin extrusion (MATE) transporter DTX51 antagonizes non‐cell‐autonomous HLS1–AMP1 signaling in a region‐specific manner

open access: yesFEBS Letters, EarlyView.
The Arabidopsis mutants hls1 hlh1 and amp1 lamp1 exhibit pleiotropic developmental phenotypes. Although the functions of the causative genes remain unclear, they act in the same genetic pathway and are thought to generate non‐cell‐autonomous signals.
Takashi Nobusawa, Makoto Kusaba
wiley   +1 more source

Special matchings in Coxeter groups

open access: yes, 2016
Special matchings are purely combinatorial objects associated with a partially ordered set, which have applications in Coxeter group theory. We provide an explicit characterization and a complete classification of all special matchings of any lower ...
Caselli, Fabrizio, Marietti, Mario
core   +1 more source

Ergothioneine supplementation improves pup phenotype and survival in a murine model of spinal muscular atrophy

open access: yesFEBS Letters, EarlyView.
Spinal muscular atrophy (SMA) is a genetic disease affecting motor neurons. Individuals with SMA experience mitochondrial dysfunction and oxidative stress. The aim of the study was to investigate the effect of an antioxidant and neuroprotective substance, ergothioneine (ERGO), on an SMNΔ7 mouse model of SMA.
Francesca Cadile   +8 more
wiley   +1 more source

Ramsey numbers of partial order graphs (comparability graphs) and implications in ring theory

open access: yesOpen Mathematics, 2020
For a partially ordered set (A,≤)(A,\le ), let GA{G}_{A} be the simple, undirected graph with vertex set A such that two vertices a≠b∈Aa\ne b\in A are adjacent if either a≤ba\le b or b≤ab\le a.
Badawi Ayman, Rissner Roswitha
doaj   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Correlation in partially ordered sets

open access: yesDiscrete Applied Mathematics, 1992
Basic results concerning correlation within ordered sets that focus on distributive lattices, systems of subsets ordered by proper inclusion and the family of linear extensions of an arbitrary finite ordered set are reviewed in this paper. Let us quote some interesting results: the Ahlswede-Daykin theorem, the FKG theorem, the universal correlation ...
openaire   +3 more sources

Structural dynamics of the plant hormone receptor ETR1 in a native‐like membrane environment

open access: yesFEBS Letters, EarlyView.
The present study unveils the structural and signaling dynamics of ETR1, a key plant ethylene receptor. Using an optimized nanodisc system and solution NMR, we captured full‐length ETR1 in a native‐like membrane environment. Our findings reveal dynamic domain uncoupling and Cu(I)‐induced rigidification, providing the first evidence of metal‐triggered ...
Moritz Lemke   +2 more
wiley   +1 more source

Quasimartingales on partially ordered sets

open access: yesJournal of Multivariate Analysis, 1984
This paper contains those results of the author's thesis, Eidgenössische Technische Hochschule Zürich (1982; Zbl 0523.60042) that concern quasimartingales with a partially ordered index set.
openaire   +3 more sources

Distributive partially ordered sets [PDF]

open access: yesFundamenta Mathematicae, 1984
The authors investigate distributive lower (i.e. meet-) semilattices: defined so that the meet is distributive over all existing joins. They generalize the results of \textit{W. H. Cornish} and \textit{R. C. Hickman} [Acta Math. Acad. Sci. Hung. 32, 5-16 (1978; Zbl 0497.06005)], to some extent.
G. P. Monro, R. C. Hickman
openaire   +3 more sources

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