Search Results - "Almeida, N.S"

Thermodynamic properties of an electron gas on a curved surface by Batista, F.F., Farias, G.A., Almeida, N.S.

“…We report a study on thermodynamic properties of a two-dimensional electron gas confined in a sector of a circular cylinder immersed in a dc magnetic field…”
Get full text

Magnetocaloric effect of thin Terbium films by Mello, V.D., Anselmo, D.H.A.L., Vasconcelos, M.S., Almeida, N.S.

“…We report a theoretical study of the magnetocaloric effect of Terbium (Tb) thin films due to finite size and surface effects in the helimagnetic phase,…”
Get full text

Hydrocarbon generation in the Permian Irati organic-rich shales under the influence of the early cretaceous Paraná Large Igneous Province by Teixeira, C.A.S., Bello, R.M.S., Almeida, N.S., Pestilho, A., Brochsztain, S., de Queiroz, T.B., Andrade, L.S., Júnior, D.F. Gregório, Sawakuchi, A.O.

“…The increasing global demand for natural gas and petroleum byproducts is turning organic-rich shales into an important target for hydrocarbon exploration and…”
Get full text

Propagation of magnetostatic modes on aperiodic rare-earth multilayers by Santiago, F.A.L., Anselmo, D.H.A.L., Almeida, N.S., Vasconcelos, M.S., Cottam, M.G., Mello, V.D.

“…The localization behavior and scaling properties of magnetostatic modes propagating on magnetic aperiodic superlattices made up by rare-earth materials is…”
Get full text

Magnetic properties of crystalline nanoparticles with different sizes and shapes by Lima, Ana T.A., Dantas, Ana L., Almeida, N.S.

“…The effects of shape and finite size on the physical behavior of nanostructured antiferromagnetic particles are investigated. They were modeled as ellipsoidal…”
Get full text

Characterization of the magnetic phases of holmium nanofilms via magnetic neutron scattering by Mello, V.D., Santiago, F.A.L., Anselmo, D.H.A.L., Vasconcelos, M.S., Almeida, N.S.

“…•Magnetic phases of Ho films are associated to magnetic neutron scattering intensity.•Spin-spin correlation functions impel the shape of the neutron scattering…”
Get full text

Biogenic methane and carbon dioxide generation in organic-rich shales from southeastern Brazil by Bertassoli, D.J., Sawakuchi, H.O., Almeida, N.S., Castanheira, B., Alem, V.A.T., Camargo, M.G.P., Krusche, A.V., Brochsztain, S., Sawakuchi, A.O.

“…Brazilian shale formations are potential biogenic gas systems that are still poorly understood. Organic-rich shales from Ponta Grossa (Devonian, Paraná Basin),…”
Get full text

Thermodynamics of a quasi-two-dimensional electron gas: Effects of magnetic fields, temperature and finite width by Ramos, A.C.A., Farias, G.A., Almeida, N.S.

“…The effects of nonzero temperature, finite thickness and magnetic fields on an electron gas confined in a quasi-two-dimensional (Q2DEG) region are studied…”
Get full text

Transport and thermodynamic properties of a 2DEG in the presence of tilted magnetic field: the influence of Dresselhauss interaction by Alves, T. F. A., Ramos, A. C. A., Farias, G. A., Costa Filho, R. N., Almeida, N. S.

“…The effect of Dresselhauss spin-orbit coupling on transport and thermodynamic properties of a non-interacting two-dimensional electron gas (2DEG) is…”
Get full text

Dynamical behavior of coupled magnetic bilayers by Lima, Ana T.A., Costa Filho, R.N., Farias, G.A., Almeida, N.S.

“…We obtain the magnetic susceptibility of systems constituted of two coupled magnetic layers. We consider that the coupling of the films is well described by a…”
Get full text

Evaluation of the kinetics of low intensity ultrasound-assisted sulfuric acid hydrolysis to obtain cellulose nanocrystals (CNCs) from microcrystalline cellulose (MCC) by Chagas, Jéssica S., Almeida, Júlia N. S., Pereira, Anderson C. L., Silva, Natália F. I., Raimundo, Rafael A., Medeiros, Eliton S., Lima, Bruno A. S. G., Galvão, Luciana S., Santos, Amélia S. F., Silva, F. I.

“…Cellulose-based materials have been extensively investigated due to their abundance, renewable nature, and low abrasiveness and density. Cellulose nanocrystals…”
Get full text

2DEG in the presence of tilted magnetic field at finite temperature by Ramos, A.C.A., Alves, T.F.A., Farias, G.A., Costa Filho, R.N., Almeida, N.S.

“…The effects of finite temperature on a two-dimensional electron gas (2DEG) in the presence of a tilted dc magnetic field are studied. The depolarization…”
Get full text

BCS: A Binary Cuckoo Search algorithm for feature selection by Rodrigues, D., Pereira, L. A. M., Almeida, T. N. S., Papa, J. P., Souza, A. N., Ramos, C. C. O., Xin-She Yang

“…Feature selection has been actively pursued in the last years, since to find the most discriminative set of features can enhance the recognition rates and also…”
Get full text

Influence of transverse fields on surface and bulk polaritons in antiferromagnetic films by Carriço, A.S., Almeida, N.S.

“…We study the behavior of surface and bulk polaritons in thin antiferromagnetic films when a dc magnetic field is applied perpendicular to the easy axis…”
Get full text

On the physical behavior of magnetic ribbons by Puça, A.A., Almeida, N.S.

“…The frequency dependent magnetic susceptibility of an infinite ribbon is calculated. The ribbon is modeled by a collection of unit cells, which have two…”
Get full text

Temperature dependence of the interfilm magnetic interaction in Fe/Cr/Fe trilayers by Chesman, C, Almeida, N.S, Azevedo, A, de Aguiar, F.M, Rezende, S.M

“…The behavior of the interfilm magnetic interaction in Fe(40 Å)/Cr( t Cr)/Fe(40 Å) trilayers ( t Cr=11, 13 and 15 Å), grown on MgO(1 0 0), is investigated…”
Get full text

Urinary symptoms and urodynamic findings in patients with Machado–Joseph disease by Musegante, André F. A., Almeida, Priscila N. S., Barboza, André L., Barroso, Ubirajara

“…The study evaluated the prevalence of clinical and urodynamic findings in the lower urinary tract of patients with Machado–Joseph (MJ) disease. One hundred…”
Get full text

Effective-medium theory of long-wavelength spin waves in magnetic superlattices by ALMEIDA, N. S, MILLS, D. L

Get full text