Zobrazeno 1 - 10
of 40
pro vyhledávání: '"G. B. Ventura"'
The structure of the electronic nonlinear optical conductivity is elucidated in a detailed study of the time-reversal symmetric two-band model. The nonlinear conductivity is decomposed as a sum of contributions related with different regions of the F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc966fb6c4634d45b47a3c4563f44990
http://arxiv.org/abs/2102.07629
http://arxiv.org/abs/2102.07629
Publikováno v:
Physical review letters. 126(25)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::edeedaface7749212ac1c8949f71a916
https://pubmed.ncbi.nlm.nih.gov/34241522
https://pubmed.ncbi.nlm.nih.gov/34241522
Publikováno v:
EPJ Web of Conferences, Vol 233, p 03001 (2020)
One important feature of two dimensional (2D) materials is that they possess an exceptional nonlinear optical (NLO) response to light, with conduc¬tivities that are several orders of magnitude larger than their 3D counterparts. The theoretical descr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::694afda8e8e1389b9ce78970fa62299d
https://www.epj-conferences.org/articles/epjconf/pdf/2020/09/epjconf_cmpnc2019_03001.pdf
https://www.epj-conferences.org/articles/epjconf/pdf/2020/09/epjconf_cmpnc2019_03001.pdf
In this work, we present numerical results for the second and third order conductivities of the plain graphene and gapped graphene monolayers associated with the second and third harmonic generation, the optical rectification and the optical Kerr eff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70e1f03993401e5d4dbdbb62b821a07c
Autor:
J. M. Viana Parente Lopes, Nuno M. R. Peres, D. J. Passos, J. M. B. Lopes dos Santos, G. B. Ventura
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
In this work, the difficulties inherent to perturbative calculations in the velocity gauge are addressed. In particular, it is shown how calculations of nonlinear optical responses in the independent particle approximation can be done to any order an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f3db2214d8b80880fc7f42d063f4e15
Autor:
Ana C.P. Ornellas, Karen L. Furie, Roque Aras, Jamary Oliveira-Filho, Jonathan Rosand, Valéria M. Borges, Laís M. G. B. Ventura, André Maurício Souza Fernandes, Luciana M.B. Oliveira, Steven M. Greenberg, Théo Araújo-Santos, Francisco José Farias Borges dos Reis, Natalia S. Rost, Cathy R. Zhang
Publikováno v:
Journal of Stroke and Cerebrovascular Diseases. 24:1817-1822
Background: To investigate the effect of COX-2 polymorphism and its product, prostaglandin E2 (PGE2), on stroke risk in an endemic area for Chagas disease. In a separate cohort, to investigate the effect of COX-2 polymorphisms on the total burden of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::311acfe1354ccd545ecc09a94e5ede6e
https://doi.org/10.1016/j.jstrokecerebrovasdis.2015.04.018
https://doi.org/10.1016/j.jstrokecerebrovasdis.2015.04.018
Autor:
J. M. B. Lopes dos Santos, J. M. Viana Parente Lopes, G. B. Ventura, D. J. Passos, Nuno M. R. Peres
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The formalism of the reduced density matrix is pursued in both length and velocity gauges of the perturbation to the crystal Hamiltonian. The covariant derivative is introduced as a convenient representation of the position operator. This allow us to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b18a54a4e358c5a11c0e14cc08998a7e
Autor:
Iara Maso, Elen Beatriz Pinto, Mayra Castro, Jamary Oliveira-Filho, Ilana Oliveira, Maiana Monteiro, Camila Marinho, Antonio Alberto Lopes, Carla Ferreira Nascimento, Paula Myllane-Fernandes, Laís M. G. B. Ventura
Publikováno v:
Topics in Stroke Rehabilitation. 21:220-227
Individuals with stroke have a high risk of falling, and their fall predictors may differ from those of other populations.To estimate fall frequency and identify factors related to fall occurrence in a sample of patients with stroke residing in the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b1ba23ab8f46898bb8fafb5b6030496
https://doi.org/10.1310/tsr2103-220
https://doi.org/10.1310/tsr2103-220
Autor:
Nestor J Barreto-Neto, Jamary Oliveira-Filho, Luana F Fonseca, Mila C. Mueller, Alisson L Andrade, Alexandre D. Barros, Pedro Antônio Pereira de Jesus, Isadora L Ferreira, Carolina C Reis, Morgana L. Jesus, Rodrigo D Fernandes, Adriano A Jesus, Lucas L Resende, Beatriz M Gonçalves, Laís M. G. B. Ventura
Publikováno v:
Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association. 25(6)
Background The investigation of ischemic stroke etiology is commonly limited to the heart and extracranial vessels. Nevertheless, the diagnosis of intracranial stenosis may carry important therapeutic implications. The aims of this study were to dete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09d381a4442b436ada7dac682d9025b4
https://pubmed.ncbi.nlm.nih.gov/27021041
https://pubmed.ncbi.nlm.nih.gov/27021041
Autor:
Meirelayne B. Duarte, Philip G. Glass, Jamary Oliveira-Filho, Nádja N. Negreiros, Guilherme T. Valenca, Laís M. G. B. Ventura, Mila C. Mueller
Publikováno v:
Parkinsonism & Related Disorders. 19:698-700
Background: Previous studies have described the association between dopamine replacement therapy in Parkinson’s disease and impulse control disorders. Methods: A caseecontrol study was performed to establish the prevalence of four of these behavior
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6097bc25003a7fbea96460d914b6d82d
https://doi.org/10.1016/j.parkreldis.2013.03.004
https://doi.org/10.1016/j.parkreldis.2013.03.004