Buscar
Mostrando ítems 61-70 de 937
Assessment of the chemical composition in different dental implant types: An analysisthrough EDX system
(MDPI AG, 2020-09-14)
The use of dental implants has been increasing in the last years; however, their chemical composition is an important issue due to the fact that the implant surface may suffer a corrosion process, allowing the possibility ...
Modificação superficial de óxidos : proposta de um modelo simples e sua aplicação em sistema aluminazircônia
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2008-07-18)
In this study a model that makes possible to foresee the limit of modifier oxide of surface that results in the complete support coating with a unit cells monolayer was proposed. From such limit, the lattice of the modifying ...
Produção de carbeto de molibdênio a partir de mineral encontrado no interior do Rio Grande do Norte
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA QUÍMICA, 2019-01-28)
This work proposed a new alternative route of synthesis of nanostructured
molybdenum carbide from the base mineral extracted from the city Carnaúba dos Dantas
- RN, through gas - solid reactions at low temperature, as ...
Caracterização de membrana nafion usando espectroscopia fotoacústica: monitoramento da hidratação
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilPrograma de Pós-Graduação em Engenharia MecânicaUTFPR, 2016-03-22)
Nafion membranes are films developed by DuPont, a perfluorosulfonic acid/polytetrafluoroethylene copolymer. These membranes are hydrophilic and preferably water is absorbed into the clusters due to the hydrophobic character ...
Co0superparamagnetic nanoparticles stabilized by an organic layer coating with antimicrobial activity
(Royal Society of Chemistry, 2020-09-18)
Cobalt (Co) is one of the most promising materials in nanotechnology due to its superior magnetic properties. However, due to the high cytotoxicity of cobalt, the activity in biological systems has been little studied. In ...
Co°superparamagnetic nanoparticles stabilized by an organic layer coating with antimicrobial activity
(Royal Society of Chemistry, 2020-09)
Cobalt (Co) is one of the most promising materials in nanotechnology due to its superior magnetic properties. However, due to the high cytotoxicity of cobalt, the activity in biological systems has been little studied. In ...
Raman characterization of CuCr2-xSnxS4 spinels
(Sociedad Chilena de Quimica, 2019)
Polycrystalline thiospinels CuCr2-xSnxS4 (x = 0.4, 0.8, 1.0 and 1.4) were synthesized via conventional solid-state reaction. The samples were characterized by powder X-ray diffraction (XRD), energy-dispersive X-ray analysis ...