Results 51 to 60 of about 6,490,412 (293)

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

SPECTRAL THEORY FOR STRUCTURED PERTURBATIONS OF LINEAR OPERATORS

open access: yes, 2018
We characterize the spectrum (and its parts) of operators which can be represented as "G=A+BC" for a "simpler" operator A and a structured perturbation BC.
Adler, Martin, ENGEL, KLAUS JOCHEN OTTO
core   +1 more source

Spectral Theory of Infinite Quantum Graphs [PDF]

open access: yes, 2018
We investigate quantum graphs with infinitely many vertices and edges without the common restriction on the geometry of the underlying metric graph that there is a positive lower bound on the lengths of its edges. Our central result is a close connection
Kostenko, Aleksey   +8 more
core   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

High Performance multivariable spectral estimator with Bounded McMillan Degree [PDF]

open access: yes, 2010
Spectral estimation is a prominent issue with applications in a widespread variety of fields, from signal processing to biology. To the present, multivariable spectral estimation with complexity constraints on the acceptable solutions is a challenging ...
Masiero, Chiara
core  

A LIBS Spectral Self-Absorption Correction Method Using Voigt Profile Fitting for the Application of Magnesium Analysis in Phosphorus Ore

open access: yes, 2020
The concentration of MgO is one of the most important parameters in the phosphate ore flotation. The fast detection of the concentration of MgO has great significance for the optimization of the flotation, the improvement of the efficiency and the ...
Sun Lan-xiang   +4 more
core   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Characterizing degenerate Sturm-Liouville problems

open access: yesElectronic Journal of Differential Equations, 2004
Consider the Dirichlet eigenvalue problem associated with the real two-term weighted Sturm-Liouville equation $$-(p(x)y')' = lambda r(x)y$$ on the finite interval [a,b].
Angelo B. Mingarelli
doaj  

Pseudospectra and eigenvalue asymptotics for disordered non-selfadjoint operators in the semiclassical limit

open access: yesFrontiers in Applied Mathematics and Statistics
The purpose of this note is to review certain recent results concerning the pseudospectra and the eigenvalues asymptotics of non-selfadjoint semiclassical pseudo-differential operators subject to small random perturbations.
Martin Vogel
doaj   +1 more source

Geary’s c and Spectral Graph Theory

open access: yesMathematics, 2021
Spatial autocorrelation, of which Geary’s c has traditionally been a popular measure, is fundamental to spatial science. This paper provides a new perspective on Geary’s c.
Hiroshi Yamada
doaj   +1 more source

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