Buscar
Mostrando ítems 31-40 de 868
Preparation of PVP hydrogel nanoparticles using lecithin vesicles
(Sociedade Brasileira de Química, 2010)
Hydrogels micro, sub-micro and nanoparticles are of great interest for drug encapsulation and delivery or as embolotherapic agents. In this work it is described the preparation of nano and sub-microparticles of pre-formed, ...
Antimicrobial Activity and pH of Calcium Hydroxide and Zinc Oxide Nanoparticles Intracanal Medication and Association with Chlorhexidine
(2015-08-01)
AIM: To evaluate pH and antibacterial activity of pastes with calcium hydroxide [Ca(OH)2] and zinc oxide (ZnO) microparticles (micro) or nanoparticles (nano) and association with 0.4% chlorhexidine against Enterococcus ...
Influence of micro- and nanoparticles of zirconium oxides on the dielectric properties of CaCu3Ti4O12
(2017)
This work presents the results of Zr oxide doping of a CaCu3Ti4O12 (CCTO) ceramic prepared by a solid-state reaction. Different stoichiometries (ZrO and ZrO2) and grain sizes (micro- and nanoparticles) were added as dopants ...
Estudo da obtenção de nitreto de boro hexagonal por rotas de síntese assistidas por micro-ondas
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ciência e Engenharia de Materiais - PPGCEMCâmpus São Carlos, 2018-02-05)
Boron nitride (h-BN) is an attractive ceramic material that combines
excellent thermal, electrical and chemical properties. The combination of these
properties makes h-BN useful in the manufacturing of lubricants, ...
ZnO nanoparticle/poly(vinyl alcohol) nanocomposites via 2 microwave-assisted sol−gel synthesis for structural materials, UV 3 shielding, and antimicrobial activity
(American Chemical Society, 2021-06-09)
Polymer nanocomposites based on poly(vinyl alcohol) (PVA) and ZnO hold a privileged position in the development of organic/inorganic hybrid multifunctional materials for applications ranging from food packing to biotechnological ...
Physico-chemistry of a successful micro-reactor: Random coils of chitosan backbones used to synthesize size-controlled silver nanoparticles
(Elsevier, 2019-12)
The synthetic system to produce silver nanoparticles (AgNP) based on the thermally activated reduction of aqueous silver ions by chitosan (CS) polysaccharide is investigated to unravel the physicochemical processes controlling ...
Use of nanoparticulate zinc oxide as intracanal medication in endodontics: pH and antimicrobial activity
(2013)
The aim of this study was to evaluate the pH and antimicrobial activity of micro or nanoparticulate zinc oxide (ZnO) pastes with or without calcium hydroxide (CH). The following medications were evaluated: microparticulate ...
An inhalable powder formulation based on micro-and nanoparticles containing 5-fluorouracil for the treatment of metastatic melanoma
(2018-02-01)
Melanoma is the most aggressive and lethal type of skin cancer, with a poor prognosis because of the potential for metastatic spread. The aim was to develop innovative powder formulations for the treatment of metastatic ...