Zobrazeno 1 - 10
of 14
pro vyhledávání: '"C. V. Morais"'
Autor:
Wersângela C. Duaví, Allyne F. Gama, Pollyana C. V. Morais, André H. B. de Oliveira, Ronaldo F. do Nascimento, Rivelino M. Cavalcante
Publikováno v:
Química Nova, Vol 38, Iss 5, Pp 622-630 (2015)
Pesticides are used mostly in rural areas for agriculture, but urban pest control, public health campaigns, and household and veterinary products can also be important sources of these contaminants. This aim of this study was to estimate household pe
Externí odkaz:
https://doaj.org/article/ae51b38adb944fefb54c6c8b1b4d9e7e
Autor:
Ivanildo S. Souza, Felipe R. Santos, Davi A. Martins, Pollyana C. V. Morais, Allyne F. Gama, Ronaldo F. Nascimento, Rivelino M. Cavalcante, Denis M. S. Abessa
Publikováno v:
Environmental Monitoring and Assessment. 194
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1f70e31c410069edb20adb630d711a14
https://doi.org/10.1007/s10661-022-10238-x
https://doi.org/10.1007/s10661-022-10238-x
Autor:
Ivanildo S, Souza, Felipe R, Santos, Davi A, Martins, Pollyana C V, Morais, Allyne F, Gama, Ronaldo F, Nascimento, Rivelino M, Cavalcante, Denis M S, Abessa
Publikováno v:
Environmental monitoring and assessment. 194(8)
The Jundiaí-Potengi Estuary (EJP) is located on the semi-arid coast of northeastern Brazil and is influenced by multiple sources of contamination. The sediment quality of EJP was assessed by using a multi-geochemical approach during the dry and wet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5c2ed700bdc47665c924500d113eb575
https://pubmed.ncbi.nlm.nih.gov/35792964
https://pubmed.ncbi.nlm.nih.gov/35792964
Publikováno v:
Physical Review B. 99
We study magnetic properties of spin glass SG systems under a random field (RF), beased on the suggestion that RFs can be induced by a weak transverse field in the compound LiHo$_x$Y$_{1-x}$F$_4$. We consider a cluster spin model that allows long-ran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a1a1797a2a306bc581c4e63646bbae5
https://doi.org/10.1103/physrevb.99.014203
https://doi.org/10.1103/physrevb.99.014203
Publikováno v:
Physical Review B. 95
The interplay between quantum fluctuations and disorder is investigated in a spin-glass model, in the presence of a uniform transverse field $\Gamma$, and a longitudinal random field following a Gaussian distribution with width $\Delta$. The model is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0abe4dbefc9fda76a527b0e20ffe0ae
https://doi.org/10.1103/physrevb.95.064201
https://doi.org/10.1103/physrevb.95.064201
The behavior of the nonlinear susceptibility $\chi_3$ and its relation to the spin-glass transition temperature $T_f$, in the presence of random fields, are investigated. To accomplish this task, the Sherrington-Kirkpatrick model is studied through t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64cc2e565d5caea498cc2ba1af3c2086
Publikováno v:
Physics Letters A. 375(3):689-697
The Hopfield fermionic Ising spin glass (HFISG) model in the presence of a magnetic transverse field Γ is used to study the inverse freezing transition. The mean field solution of this model allows introducing a parameter a that controls the frustra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4cc935c83eabf55eb1430ddc4c6fe98
Publikováno v:
Physics Letters A. 374:3554-3560
In the present work it is studied the fermionic van Hemmen model for the spin glass (SG) with a transverse magnetic field $\Gamma$. In this model, the spin operators are written as a bilinear combination of fermionic operators, which allows the analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1948e0dfe42501550fbca5a116d51daa
https://doi.org/10.1016/j.physleta.2010.06.051
https://doi.org/10.1016/j.physleta.2010.06.051
Publikováno v:
Physical review. E. 93(1)
The interplay between geometrical frustration (GF) and inverse freezing (IF) is studied within a cluster approach. The model considers first-neighbor (J_{1}) and second-neighbor (J_{2}) intracluster antiferromagnetic interactions between Ising spins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7855965dc1e87b16a518b7c5e707949d
https://pubmed.ncbi.nlm.nih.gov/26871062
https://pubmed.ncbi.nlm.nih.gov/26871062
Publikováno v:
Physical review. E, Statistical, nonlinear, and soft matter physics. 89(1)
The goal of the present work is to investigate the role of trivial disorder and nontrivial disorder in the three-state Hopfield model under a Gaussian random field. In order to control the nontrivial disorder, the Hebb interaction is used. This provi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c6162ec4c53218080d176494e4c60a1
https://pubmed.ncbi.nlm.nih.gov/24580211
https://pubmed.ncbi.nlm.nih.gov/24580211