Results 51 to 60 of about 4,511,459 (292)

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Scope-bounded multistack pushdown systems: fixed-point, sequentialization, and tree-width [PDF]

open access: yes, 2012
We present a novel fixed-point algorithm to solve reachability of multi-stack pushdown systems restricted to runs of bounded-scope. The followed approach is compositional, in the sense that the runs of the system are summarized by bounded-size interfaces.
Gennaro, Parlato, La Torre, Salvatore
core   +2 more sources

Invertibility and Fredholm Property of Fock Toeplitz Operators

open access: yesMathematics, 2023
We characterize some necessary and sufficient conditions of invertible Toeplitz operators acting on the Fock space. In particular, we study the Fredholm properties of Toeplitz operators with BMO1 symbols, where their Berezin transforms are bounded ...
Chunxu Xu, Tao Yu
doaj   +1 more source

Bounds for the Kirchhoff Index of Bipartite Graphs [PDF]

open access: yesJournal of Applied Mathematics, 2012
A (m, n)‐bipartite graph is a bipartite graph such that one bipartition has m vertices and the other bipartition has n vertices. The tree dumbbell D(n, a, b) consists of the path Pn−a−b together with a independent vertices adjacent to one pendent vertex of Pn−a−b and b independent vertices adjacent to the other pendent vertex of Pn−a−b.
openaire   +4 more sources

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

open access: yesFEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto   +3 more
wiley   +1 more source

The classification of symmetry protected topological phases of one-dimensional fermion systems

open access: yesForum of Mathematics, Sigma, 2021
We introduce an index for symmetry-protected topological (SPT) phases of infinite fermionic chains with an on-site symmetry given by a finite group G. This index takes values in $\mathbb {Z}_2 \times H^1(G,\mathbb {Z}_2) \times H^2(G, U(1)_{\mathfrak {p}
Chris Bourne, Yoshiko Ogata
doaj   +1 more source

Bounded disorder: The effect of the index

open access: yesTheoretical Computer Science, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

A Bound on the Strong Chromatic Index of a Graph

open access: yesJournal of Combinatorial Theory, Series B, 1997
The strong chromatic index \(s\chi'(G)\) of a graph \(G\) is the minimum number of colors in a proper edge coloring of a graph in which no edge is adjacent to an edge of the same color. It is proved that \(s\chi'(G)\leq 1.998\Delta^2\), where \(\Delta\) is the maximum degree of a vertex of \(G\). This answers a question of Erdös and Nešetřil, which was
Molloy, M., Reed, B.
openaire   +3 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Well-bounded semigroups in connected groups [PDF]

open access: yes, 1977
Poguntke D. Well-bounded semigroups in connected groups. Semigroup Forum.
Poguntke, Detlev, Detlev Poguntke
core   +1 more source

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