13 documents found, page 1 of 2
Assessing the relaxation mechanisms contributions on magnetoimpedance effect in...
Santos, J. G. S.; Silva, E. F.; Gamino, M.; Ferreira, Armando José Barros; Vaz, F.; Bohn, F.; Correa, M. A.Damping parameter plays a key role in the magnetization dynamics of ferri/ferromagnetic materials with potential technological applications. Experimentally the damping parameter can be estimated from the linewidth of the ferromagnetic resonance experiment, which is altered by distinct mechanisms associated with extrinsic contributions, such as spin pumping and two-magnon scattering mechanisms. Here we perform a...
Investigation of large enhancement of spin hall angle in heterostructures of Ag...
Santos, O. A.; Silva, E. F.; Gamino, M.; Mendes, J. B. S.; Rezende, S. M.; Azevedo, A.The spin Hall angle (SHA) represents the efficiency of the conversion between spin current into charge current and vice-versa. In this paper, we report the experimental detection of large enhancement of the effective SHA in heterostructures of yttrium iron garnet (YIG)/[Pt-Ag]/Pt and YIG/[Pt-Ag], when compared with measurements in YIG/Pt bilayers. The notation [Pt-Ag] represents the nanoparticles island formati...
The role of metallic nanoparticles in the enhancement of the spin Hall magnetor...
Mendes, J. B. S; Gamino, M.; Silva, E. F.; Santos, O. Alves; Rodríguez-Suárez, R. L.; Machado, F. L. A.; Azevedo, A.; Rezende, S. M.Enhancements in the spin Hall magnetoresistance (SMR) close to one order of magnitude in bilayers of yttrium iron garnet (YIG) and platinum with embedded metallic nanoparticles of Ag and Cu are reported. The en hancement in the electrical detection of the back reflected spin current in YIG/Pt-MP(t MP )-Pt relative to YIG/Pt is eff attributed to the increase in the effective spin Hall angle ( θ^eff SHA) due to t...
Association of the Occurrence of Ant Species (Hymenoptera: Formicidae) with Soi...
Silva, E. F.; Cora, J. E. [UNESP]; Harada, A. Y.; Sampaio, I. B. M.Made available in DSpace on 2018-11-26T15:46:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-12-01; Foundation for Research and Scientific and Technological Development of Maranhao (FAPEMA); Ants occur in all tropical forest strata by nesting, foraging, and interacting with plants and other residents from these habitats. Most ants build their nests in the soil. Selecting the proper soil for nesting de...
DNA interaction with hoechst 33258: stretching experiments decouple the differe...
Silva, E. F.; Ramos, E. B.; Rocha, M. S.By performing single molecule stretching experiments with optical tweezers, we have studied the DNA interaction with the ligand Hoechst 33258. The mechanical properties of the complexes formed as a function of ligand concentration were directly determined from these measurements by fitting the force × extension curve to the WormLike Chain model of semiflexible polymers. In addition, the physicochemical paramete...
Assessing the potential of six common brazilian crops for gold phytoextraction ...
Novo, L. A. B.; Silva, E. F.; Mahler, C. F.; Tavares, C. R. G.; Peréz, D. V.
DNA-doxorubicin interaction: New insights and peculiarities
Silva, E. F.; Bazoni, R. F.; Ramos, E. B.; Rocha, M. S.We have investigated the interaction of the DNA molecule with the anticancer drug doxorubicin (doxo) by using three different experimental techniques: single molecule stretching, single molecule imaging, and dynamic light scattering. Such techniques allowed us to get new insights on the mechanical behavior of the DNA-doxo complexes as well as on the physical chemistry of the interaction. First, the contour leng...
Tracing of aerosol sources in an urban environment using chemical, Sr isotope, ...
Duarte, R. M. B. O.; Matos, J. T. V.; Paula, A. S.; Lopes, S. P.; Santos, J. F.; Patinha, C.; Silva, E. F.; Soares, R.; Duarte, A. C.In the framework of two national research projects (ORGANOSOL and CN-linkAIR), fine particulate matter (PM2.5) was sampled for 17 months at an urban location in the Western European Coast. The PM2.5 samples were analyzed for organic carbon (OC), water-soluble organic carbon (WSOC), elemental carbon (EC), major water-soluble inorganic ions, mineralogical, and for the first time in this region, strontium isotope ...
The fogo volcano (Cape Verde) 2014 eruption: impacts on human health
Candeias, Carla; Ávila, P. F.; Alves, C.; Silva, E. F.; Rocha, F.; Pio, C; Teixeira, J. P.Volcanic eruptions disturb directly and indirectly the ecosystems and the health of the exposed populations. Hazards include, among others, toxic volcanic ashes with diameters <10 μm (PM10). During volcanic eruptions and their immediate aftermath, increased respiratory system morbidity has been observed as well as mortality among those affected by volcanic eruptions. Unfavorable health effects could partly be p...
Morphological alterations in the kidney of rats with natural and experimental l...
Faria, M. Tucunduva de; Athanazio, Daniel Abensur; Ramos, Eduardo Antônio Gonçalves; Silva, E. F.; Reis, M. G.; Ko, A. I.; Faria, M. Tucunduva deTexto completo: acesso restrito. p. 231-238; Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-07T16:30:38Z No. of bitstreams: 1 1-s2.0-S0021997507001338-main.pdf: 1419911 bytes, checksum: 782e1299445c48fa0874714687c6f544 (MD5); Approved for entry into archive by Rodrigo Meirelles (rodrigomei@ufba.br) on 2014-09-09T15:55:59Z (GMT) No. of bitstreams: 1 1-s2.0-S0021997507001338-main.pdf: 1419911 bytes, ...