Skip to main content

9 Result(s)

within M.H. Sousa Remove this filter

and

  1. No Access

    Article

    Effect of iron oxide nanoparticles functionalization by citrate analyzed using Mössbauer spectroscopy

    Comparison of the Mössbauer spectra of the as-prepared native iron oxide nanoparticles (IONs) and the citrate-functionalized IONs demonstrates differences in the spectral shapes at room temperature and variati...

    Michael V. Ushakov, M. H. Sousa, Paulo C. Morais, Ernő Kuzmann… in Hyperfine Interactions (2020)

  2. Article

    Open Access

    Gold-decorated magnetic nanoparticles design for hyperthermia applications and as a potential platform for their surface-functionalization

    The integration of noble metal and magnetic nanoparticles with controlled structures that can couple various specific effects to the different nanocomposite in multifunctional nanosystems have been found inter...

    L. León Félix, B. Sanz, V. Sebastián, T. E. Torres, M. H. Sousa… in Scientific Reports (2019)

    Download PDF (6782 KB) View Article

  3. Article

    Open Access

    Structural and magnetic properties of core-shell Au/Fe3O4 nanoparticles

    We present a systematic study of core-shell Au/Fe3O4 nanoparticles produced by thermal decomposition under mild conditions. The morphology and crystal structure of the nanoparticles revealed the presence of Au co...

    L. León Félix, J. A. H. Coaquira, M. A. R. Martínez, G. F. Goya… in Scientific Reports (2017)

    Download PDF (2134 KB) View Article

  4. Article

    Open Access

    Severe maternal morbidity due to respiratory disease and impact of 2009 H1N1 influenza A pandemic in Brazil: results from a national multicenter cross-sectional study

    The aim of this study was to assess the burden of respiratory disease, considering the influenza A pandemic season (H1N1pdm09), within the Brazilian Network for Surveillance of Severe Maternal Morbidity, and f...

    L. C. Pfitscher, J. G. Cecatti, R. C. Pacagnella, S. M. Haddad… in BMC Infectious Diseases (2016)

    Download PDF (495 KB) View Article

  5. No Access

    Article

    Forearm bone mineral density changes during postpartum and the effects of breastfeeding, amenorrhea, body mass index and contraceptive use

    Prospective cohort study performed to evaluate bone mineral density (BMD) changes up to 12 months postpartum of healthy women and its association with breastfeeding, contraceptive methods, amenorrhea, and body...

    M. L. Costa, F. G. Krupa, P. M. Rehder, M. H. Sousa… in Osteoporosis International (2012)

  6. No Access

    Chapter and Conference Paper

    Surface spin disorder in nickel ferrite nanomagnets studied by in-field Mössbauer spectroscopy

    The magnetic structure of NiFe2O4 nanoparticles has been investigated by means of Mössbauer spectra at T = 4.2 K in applied fields up to 12 T. Four samples were studied, with mean particle diameters ranging from ...

    H. R. Rechenberg, E. C. Sousa, J. Depeyrot, M. H. Sousa, R. Aquino… in ICAME 2007 (2009)

  7. No Access

    Article

    Surface spin disorder in nickel ferrite nanomagnets studied by in-field Mössbauer spectroscopy

    The magnetic structure of NiFe2O4 nanoparticles has been investigated by means of Mössbauer spectra at T = 4.2 K in applied fields up to 12 T. Four samples were studied, with mean particle diameters ranging from ...

    H. R. Rechenberg, E. C. Sousa, J. Depeyrot, M. H. Sousa… in Hyperfine Interactions (2008)

  8. No Access

    Chapter and Conference Paper

    Synthesis and room temperature magnetic and magneto-optical characterization of size-controlled nickel nanoferrite based ferrofluids

    Nickel ferrite nanoparticles are synthesized bottom up and then peptized in aqueous media resulting in stable magnetic fluids. X-ray powder diffraction and transmission electronic microscopy permit the investi...

    M. H. Sousa, F. A. Tourinho, J. Depeyrot, E. Dubois… in Surface and Colloid Science (2004)

  9. No Access

    Article

    Nanoparticle chain-like formation in electrical double-layered magnetic fluids evidenced by small-angle X-ray scattering

    Small-angle X-ray scattering (SAXS) was performed on a series of Electric Double-Layered Magnetic Fluids (EDL-MF) composed of ferrite type-- CoFe2O4, MnFe2O4, ZnFe2O4, NiFe2O4 and CuFe2O4--nanoparticles of differ...

    R. Itri, J. Depeyrot, F.A. Tourinho, M.H. Sousa in The European Physical Journal E (2001)