Search Results - "de Carvalho, H. B."

Sleep time and cardiovascular risk factors in adolescents: The HELENA (Healthy Lifestyle in Europe by Nutrition in Adolescence) study by Rey-López, J.P, de Carvalho, H.B, de Moraes, A.C.F, Ruiz, J.R, Sjöström, M, Marcos, A, Polito, A, Gottrand, F, Manios, Y, Kafatos, A, Molnar, D, Widhalm, K, De Henauw, S, Moreno, L.A

“…Highlights • Adolescents’ sleep time was not associated with cardiometabolic risk factors. • European adolescents reported a sleep time of 8 h per day…”
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Preparation and structural-optical characterization of dip-coated nanostructured Co-doped ZnO dilute magnetic oxide thin films by Valério, L. R, Mamani, N. C, de Zevallos, A. O, Mesquita, A, Bernardi, M. I. B, Doriguetto, A. C, de Carvalho, H. B

“…ZnO-based materials are one of the most studied systems. Their applicability spans over several research areas and industries, like optoelectronics, catalysis…”
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Evidence of defect-mediated magnetic coupling on hydrogenated Co-doped ZnO by de Godoy, M.P.F., Mesquita, A., Avansi, W., Neves, P.P., Chitta, V.A., Ferraz, W.B., Boselli, M.A., Sabioni, A.C.S., de Carvalho, H.B.

“…► High-quality Co-doped ZnO samples were prepared by solid state reaction method. ► Structural defects were introduced by a post-annealing (Ar-95%+H2-5%,…”
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Transport and Magnetotransport transition of thin Co films grown on Si by de Carvalho, H. B., Brasil, M. J. S. P., Denardin, J. C., Knobel, M.

“…Thin Co films deposited onto p‐type Si substrates show a marked transition on their transport properties for temperatures around 250 K. For temperatures higher…”
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Room temperature ferromagnetism promoted by defects at zinc sites in Mn-doped ZnO by de Almeida, V.M., Mesquita, A., de Zevallos, A.O., Mamani, N.C., Neves, P.P., Gratens, X., Chitta, V.A., Ferraz, W.B., Doriguetto, A.C., Sabioni, A.C.S., de Carvalho, H.B.

“…The nature of the room temperature ferromagnetism in dilute magnetic oxides is still a matter of debate. However, there is a consensus that structural point…”
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Defect induced room temperature ferromagnetism in high quality Co-doped ZnO bulk samples by de Godoy, M.P.F., Gratens, X., Chitta, V.A., Mesquita, A., de Lima, M.M., Cantarero, A., Rahman, G., Morbec, J.M., de Carvalho, H.B.

“…The nature of the often reported room temperature ferromagnetism in transition metal doped oxides is still a matter of huge debate. Herein we report on room…”
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Preparation and characterization of palladium-doped titanium dioxide for solar cell applications by Oliveira, A.F., Silva, S.A.M., Rubinger, C.P., Ider, J., Rubinger, R.M., Oliveira, E.T.M., Doriguetto, A.C., Carvalho, H.B. de

“…The syntheses of TiO2 and Pd/TiO2 nanoparticles were carried by hydrolysis of alkoxide precursors using the reverse micelles method using titanium…”
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Second‐trimester soft markers: relation to first‐trimester nuchal translucency in unaffected pregnancies by Miguelez, J., De Lourdes Brizot, M., Liao, A. W., De Carvalho, M. H. B., Zugaib, M.

“…Objective Genetic sonography following first‐trimester combined screening appears to increase substantially detection rates for Down syndrome but it relies on…”
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Spin Transport in (110) GaAs-Based Cavity Structures by Biermann, K., Couto, O. D. D., Cerda, E., de Carvalho, H. B., Hey, R., Santos, P. V.

“…The anisotropic spin dephasing of optically generated electrons in an undoped (110) GaAs quantum well inside a microcavity structure is investigated by means…”
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Predicting preterm delivery in asymptomatic patients with prior preterm delivery by measurement of cervical length and phosphorylated insulin‐like growth factor‐binding protein‐1 by Bittar, R. E., da Fonseca, E. B., de Carvalho, M. H. B., Martinelli, S., Zugaib, M.

“…Objective To evaluate the efficacy of cervical length measurement in combination with a bedside assessment of phosphorylated insulin‐like growth factor‐binding…”
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Performance of a Multiplex Nested Polymerase Chain Reaction in Detecting 7 Pathogens Containing DNA in Their Genomes Associated With Congenital Infections by Yamamoto, Lidia, Filho, Antonio G Amorim, Queiroz, Joelma A, de Carvalho, Mario H B, Rodrigues, Jonatas C, Kanunfre, Kelly A, Francisco, Rossana P V, Okay, Thelma Suely

“…Infections are the leading cause of perinatal and infant mortality in low-income and low-resource countries, which have a higher prevalence of infections…”
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Magnetic and Magnetotransport Properties of Co Thin Films on Si by Knobel, M., Denardin, J.C., de Carvalho, H.B., Brasil, M.J.S.P., Pakhomov, A.B., Missell, F.P.

“…A systematic study of magnetic and magnetotransport properties of thin Co films on Si is reported in this work. The Co films of thicknesses 30, 160 and 440 Å…”
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Effects of Reducing Heat Treatment on the Structural and the Magnetic Properties of Mn:ZnO Ceramics by Lage, V. M. Almeida, da Silva, R. T, Mesquita, A, de Godoy, M. P. F, Gratens, X, Chitta, d V. A, de Carvalho, H. B

“…Journal of Alloys and Compounds 863 (2021) 158320 Polycrystalline bulk Mn:ZnO ceramics with Mn nominal concentrations of 6, 11, 17 and 22 at.% were prepared…”
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Defect Induced Room Temperature Ferromagnetism in High Quality Co-doped ZnO Bulk Samples by de Godoy, M. P. F, Gratens, X, Chitta, V. A, Mesquita, A, LimaJr, M. M de, Cantarero, A, Rahman, G, Morbec, J. M, de Carvalho, H. B

“…Journal of Alloys and Compounds 859 (2021) 157772 The nature of the often reported room temperature ferromagnetism in transition metal doped oxides is still a…”
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Magnetization of Zn1−xCoxO nanoparticles: single-ion anisotropy and spin clustering by Gratens, X., de Abreu Silva, B., Bernardi, M.I.B., de Carvalho, H.B., Franco Jr, A., Chitta, V.A.

“…The magnetization of Zn1−xCoxO (0.0055 ≤ x ≤ 0.073) nanoparticles has been measured as a function of temperature T (1.7 K ≤ T ≤ 10 K) and for magnetic field up…”
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Green-assisted synthesis of highly defective nanostructured Fe-doped SnO2: Magnetic and photocatalytic properties evaluation by da Silva Ribeiro, M.H., Marques, G.N., Moreira, A.J., Oliveira, M.M., Oliveira, R.C., da Silva, R.T., Krohling, A.C., Macedo, W.A.A., Bernardi, M.I.B., Mascaro, L.H., Rangel, J.H.G., de Carvalho, H.B.

“…Here we present a comprehensive characterization of the properties of undoped and Fe-doped SnO2 nanoparticles prepared with Syzygium cumini leaves extract. The…”
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A comprehensive study on the processing of Co:ZnO nanostructured ceramics: Defect chemistry engineering and grain growth kinetics by da Silva, R.T., Morbec, J.M., Rahman, G., de Carvalho, H.B.

“…•A structural characterization delivered the Co apparent incorporation activation energy and the grain growth parameters.•The Ar atmosphere promotes the ZnO…”
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Magnetotransport and electric properties of Co–SiO2–Si structure by de Carvalho, H.B., Brasil, M.J.S.P., Knobel, M., Denardin, J.C.

“…We present an investigation on the transport and magnetotransport properties of thin Co films deposited onto Si substrates with a thin native oxide layer. We…”
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Influence of reducing heat treatment on the structural and magnetic properties of MnO:ZnO ceramics by Lage, V.M. Almeida, da Silva, R.T., Mesquita, A., de Godoy, M.P.F., Gratens, X., Chitta, V.A., de Carvalho, H.B.

“…•Mn:ZnO ceramics were prepared by solid-state reaction method.•Defects (oxygen vacancies) was introduced in system via heat treatments under reducing…”
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Structural, optical, and magnetic evaluation of Co-, Ni-, and Mn-modified multiferroic BiFeO3 ceramics by Sales, J.N.B., da Silva, R.T., Lara, L.R.S., Ramos, S.L.L.M., Soares, J.S., Soares, T.A.S., Machado, G., Manhabosco, S.M., de Oliveira, A.B., de Carvalho, H.B., Batista, R.J.C., Stumpf, H.O., Manhabosco, T.M.

“…Co-, Ni-, and Mn-doped BiFeO3 (BFO) ceramics were synthesized herein through a solid-state reaction. All doped BFO samples exhibit visible-light response, and…”
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