Results 11 to 20 of about 52 (52)

Serum concentrations of IL‐31 in dogs with nonpruritic mast cell tumours or lymphoma

open access: yesVeterinary Dermatology, Volume 31, Issue 6, Page 466-e124, December 2020., 2020
Background The aim of this study was to compare serum interleukin (IL)‐31 concentrations in dogs with lymphoma and mast cell tumours (MCT) without pruritus to those of healthy dogs. Hypothesis/Objectives To determine if IL‐31 plays a role in tumour pathogenesis and if IL‐31 could be a biological marker for disease progression.
Nataliia Ignatenko   +8 more
wiley   +1 more source

In vitro antimicrobial activity of a gel containing antimicrobial peptide AMP2041, chlorhexidine digluconate and Tris‐EDTA on clinical isolates of Pseudomonas aeruginosa from canine otitis

open access: yesVeterinary Dermatology, Volume 27, Issue 5, Page 391-e98, October 2016., 2016
Background– Pseudomonas aeruginosa (PA) may cause suppurative otitis externa with severe inflammation and ulceration in dogs. Multidrug resistance is commonly reported for this organism, creating a difficult therapeutic challenge. Objective– The aim of this study was to evaluate the in vitro antimicrobial activity of a gel containing 0.5 µg/mL of ...
Giovanni Ghibaudo   +6 more
wiley   +1 more source

Matrix measure and application to stability of matrices and interval dynamical systems

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 2, Page 75-85, 2003., 2003
Using some properties of the matrix measure, we obtain a general condition for the stability of a convex hull of matrices that will be applied to study the stability of interval dynamical systems. Some classical results from stability theory are reproduced and extended.
Ziad Zahreddine
wiley   +1 more source

The Dittert′s function on a set of nonnegative matrices

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 13, Issue 4, Page 709-716, 1990., 1990
Let Kn denote the set of all n × n nonnegative matrices with entry sum n. For X ∈ Kn with row sum vector (r1, …, rn), column sum vector (c1, …, cn), Let ϕ(X)=∏iri+∏jcj−perX. Dittert′s conjecture asserts that ϕ(X) ≤ 2 − n!/nn for all X ∈ Kn with equality iff X = [1/n]n×n. This paper investigates some properties of a certain subclass of Kn related to the
Suk Geun Hwang, Mun-Gu Sohn, Si-Ju Kim
wiley   +1 more source

Means of positive matrices [PDF]

open access: yes
Means of positive numbers are well-know but the theory of matrix means due to Kubo and Ando is less known. The lecture gives a short introduction to means, the emphasis is on matrices.
Petz, Dénes
core  

and

open access: yes, 2008
A sign pattern matrix is a matrix whose entries are from the set {+, −, 0}. The minimum rank of a sign pattern matrix A is the minimum of the ranks of the real matrices whose entries have signs equal to the corresponding entries of A.
Marina Arav   +4 more
core  

Solving Euclidean Distance Matrix Completion Problems Via Semidefinite Programming

open access: yes, 1997
. Given a partial symmetric matrix A with only certain elements specified, the Euclidean distance matrix completion problem (EDMCP) is to find the unspecified elements of A that make A a Euclidean distance matrix (EDM).
Abdo Y. Alfakih, Henry Wolkowicz
core  

ESTIMATING THE CONSUMPTION MATRIX FROM INEXACT DATA IN THE LEONTIEF MODEL

open access: yes, 2008
. The Leontief model, originally developed for describing an economic system in terms of mutually interrelated and structurally conditioned simultaneous flows of commodities and services, has important applications to wide ranging disciplines.
Moody   +4 more
core  

Combinatorial aspects of generalized complementary basic matrices

open access: yesOpen Mathematics, 2013
Fiedler Miroslav, Hall Frank
doaj   +1 more source

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