Zobrazeno 1 - 10 of 27 pro vyhledávání: '"Enide Andrade Martins"'
1
Evaluation of the biocompatibility and skin hydration potential of vitamin E-loaded lipid nanosystems formulations: in vitro and human in vivo studies
Autor: Ana Catarina Silva, Enide Andrade Martins, J.M. Sousa Lobo, Renata Silva, S. Vaz, Maria Helena Amaral
Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Lipid-based nanosystems, such as nanostructured lipid carriers (NLC) and nanoemulsions (NE) have been described as promising alternatives to conventional formulations for increase skin hydration. Besides, these systems have been used as efficient veh
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::faf650821aa3c187d2e54942422b0848
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3
Ky Fan theorem applied to Randić energy
Autor: María Robbiano, Ivan Gutman, Enide Andrade Martins, Bernardo San Martín
Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Let G be a simple undirected graph of order n with vertex set V ( G ) = { v 1 , v 2 , … , v n } . Let d i be the degree of the vertex v i . The Randic matrix R = ( r i , j ) of G is the square matrix of order n whose ( i , j ) -entry is equal to 1
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edd9edc3ca1c3d049d3f8bd8827e7bba
https://doi.org/10.1016/j.laa.2014.06.051
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4
The skeleton of acyclic Birkhoff polytopes
Autor: Liliana Costa, Nair Maria Maia de Abreu, Geir Dahl, Enide Andrade Martins
Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
For a fixed tree T with n vertices the corresponding acyclic Birkhoff polytope Ω n ( T ) consists of doubly stochastic matrices having support in positions specified by T. This is a face of the Birkhoff polytope Ω n (which consists of all n × n do
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8c2f5dbd5813f32e872491cc1c35ee8
https://doi.org/10.1016/j.laa.2014.05.021
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5
On complementary coverage ofΩn(T)
Autor: Liliana Costa, Nair Maria Maia de Abreu, Enide Andrade Martins
Publikováno v: Linear Algebra and its Applications. 442:135-144
Every acyclic Birkhoff polytope is represented by a bicolored tree. In this paper we use the concept of T-component of a tree in order to cover it. In addition, the definitions of T-edge cover (respectively, T-vertex cover) subgraphs and of complemen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53126d2cbfac9d41de73a33e58444fc2
https://doi.org/10.1016/j.laa.2013.08.011
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6
A generalization of Fiedler's lemma and some applications
Autor: María Robbiano, Domingos M. Cardoso, Enide Andrade Martins, Ivan Gutman
Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
LINEAR & MULTILINEAR ALGEBRA
Artículos CONICYT
CONICYT Chile
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In a previous paper [M. Robbiano, E.A. Martins, and I. Gutman, Extending a theorem by Fiedler and applications to graph energy, MATCH Commun. Math. Comput. Chem. 64 (2010), pp. 145-156], a lemma by Fiedler was used to obtain eigenspaces of graphs, an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c16e3371ddc1e6355c6b086644189fb
https://doi.org/10.1080/03081087.2010.536982
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7
Energy of line graphs
Autor: Domingos M. Cardoso, Ivan Gutman, María Robbiano, Enide Andrade Martins, Oscar Rojo, Luis Medina
Publikováno v: LINEAR ALGEBRA AND ITS APPLICATIONS
Artículos CONICYT
CONICYT Chile
instacron:CONICYT
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Submitted by Enide Martins (enide@ua.pt) on 2011-10-11T16:25:45Z No. of bitstreams: 1 Energy of line graphs.pdf: 209439 bytes, checksum: 1ad10311eb1ec19c2d442b39aa24d5ab (MD5) Made available in DSpace on 2011-10-31T12:50:33Z (GMT). No. of bitstreams:
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9dffa06795a3be5c8c0bf347e98675d9
https://doi.org/10.1016/j.laa.2010.05.009
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8
Faces of faces of the tridiagonal Birkhoff polytope
Autor: Enide Andrade Martins, Liliana N. Costa
Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The tridiagonal Birkhoff polytope, Ω n t , is the set of real square matrices with nonnegative entries and all rows and columns sums equal to 1 that are tridiagonal. This polytope arises in many problems of enumerative combinatorics, statistics, com
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53e53d000cd89f0ce2c28cb9175f5d37
https://doi.org/10.1016/j.laa.2009.10.030
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9
Face counting on an Acyclic Birkhoff polytope
Autor: Enide Andrade Martins, Liliana N. Costa, C.M. da Fonseca
Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Submitted by Enide Martins (enide@ua.pt) on 2011-10-11T16:32:19Z No. of bitstreams: 1 Face counting on an acyclic Birkhoff polytope.pdf: 231509 bytes, checksum: d2a33d57e50c6871d4aafbd359661735 (MD5) Made available in DSpace on 2011-10-31T14:52:06Z (
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5afffce77eed6a8a2121fdfe106f47a2
https://doi.org/10.1016/j.laa.2008.10.015
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10
Some results on the Krein parameters of an association scheme
Autor: Luís António de Almeida Vieira, Enide Andrade Martins, Vasco Moço Mano
Publikováno v: CIM Series in Mathematical Sciences ISBN: 9783319161174
We consider association schemes with d classes and the underlying Bose-Mesner algebra, \(\mathcal{A}\). Then, by taking into account the relationship between the Hadamard and the Kronecker products of matrices and making use of some matrix techniques
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1743b7fc391dac4e2a420f09fc330de
http://hdl.handle.net/10773/15014
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