1. Synthesis of TiO2/ZnO photoanodes on FTO conductive glass for photovoltaic applications

Abstract For oxide semiconductors for application in dye-sensitized solar cells (DSSCs), titanium dioxide conjugated with zinc oxide thin films was synthesized and characterized. The UV (ultraviolet) spectrum characterization showed a peak of absorbance at around 355 nm, with a band gap of 3.25 eV and reflectance around 85%. Such characteristics allowed the

Cerâmica. Publicado em: 2023

2. Characterization and mechanical properties of one-part geopolymer based on a pure metakaolin

Abstract Geopolymers are amorphous silicate polymers that have been extensively studied due to their applications, scientific and technical relevance, and their potential as cement in substitution to Portland. Much of the focus has been in the use of precursors and aggregates that are rarely pure and homogeneous with the use of tailings being very common. Th

REM - International Engineering Journal. Publicado em: 2022

3. Titanium prostheses versus stapes columella type 3 tympanoplasty: a comparative prospective study

Resumo Introdução: A timpanoplastia é um procedimento cirúrgico que visa reconstruir os mecanismos de transmissão do som na orelha média. Objetivo: Analisar, do ponto de vista audiológico, pacientes com otite média crônica submetidos à timpanoplastia tipo 3 com columela maior, com prótese de reconstituição ossicular total de titânio, ou com c

Brazilian Journal of Otorhinolaryngology. Publicado em: 2022

4. Enhancement of Visible Light-Responsive Photocatalytic Efficiency by Using a Laccaic Acid-Modified Titanium Dioxide Photocatalyst

In this study, a laccaic acid-modified TiO2 photocatalyst (Lac-TiO2) was prepared via an impregnation method with 0.50, 1.00, 2.50, and 5.00 wt.% laccaic acid. The products’ physical properties were examined through X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), X-ray photoemission spectroscopy (XPS), UV-Vis diffused

Journal of the Brazilian Chemical Society. Publicado em: 2022

5. Emerging titanium surface modifications: The war against polymicrobial infections on dental implants

Resumo Implantes dentários em titânio (Ti) são reconhecidos como principal modalidade terapêutica para a reabilitação oral de pacientes edêntulos, demonstrando uma alta taxa de sucesso e longevidade clínica. No entanto, após inserção no ambiente bucal, os implantes dentários agem como substrato para adesão e acúmulo microbiano. A formação de

Brazilian Dental Journal. Publicado em: 2022

6. Effects of titanium prepared platelet rich fibrin on facial nerve regeneration: an experimental study

Resumo Introdução: A lesão do nervo facial é uma condição que causa problemas funcionais, psicológicos e cosméticos e os métodos de tratamento precisam ser melhorados. Objetivo: Investigamos a eficácia da fibrina rica em plaquetas preparada com titânio como um intensificador de cura na transecção do nervo facial. Método: Vinte e sete coelhos

Brazilian Journal of Otorhinolaryngology. Publicado em: 2022

7. Preparation of SAPO-34-Based Catalyst for Conversion of Fructose to 5-Hydroxymethylfurfural

Solid acid-catalyzed dehydration of fructose to produce 5-hydroxymethylfurfural (5-HMF) has been a hotspot in biomass conversion research in recent years. In this study, a novel SAPO-34-based catalyst was prepared by consecutive steps of titanium doping, sulfuric acid impregnation, and sulfonic acid functionalization. Characterization of the catalyst with X-

J. Braz. Chem. Soc.. Publicado em: 2021-08

8. Effect of a boomerang-shaped Conchal cartilage graft for Type three Tympanoplasty on Hearing

Abstract Introduction Chronic suppurative otitis media atticoantral disease (CSOM-AAD) is often associated with ossicular erosion resulting in significant hearing loss. Absence of the stapes suprastructure is a poor prognostic indicator of hearing outcome, which necessitates an effective reconstruction technique for ossicular continuity and restoration of m

Int. Arch. Otorhinolaryngol.. Publicado em: 2021-04

9. Endodontic Retreatment Using a Single Instrument from four Nickel-Titanium Systems - A Micro-CT Study

Resumo Este estudo laboratorial avaliou por meio de micro-CT a eficiência do uso de um único instrumento de três sistemas rotatórios em retratamentos endodônticos, comparados a um instrumento único reciprocante. Sessenta caninos extraídos foram preparados usando o sistema ProTaper Universal (F2) e obturados. Após 30 dias de armazenamento a 37 ºC e 1

Braz. Dent. J.. Publicado em: 2020-11

10. Evaluation of zinc-oxide nanocoating on the characteristics and antibacterial behavior of nickel-titanium alloy

RESUMO Objetivos: Avaliar o efeito do nanorrevestimento de óxido de zinco (ZnO) sobre as propriedades mecânicas e propriedades antibacterianas de fios ortodônticos de NiTi. Métodos: Fios 0,016” x 0,022” de NiTi foram revestidos com nanopartículas de ZnO por meio de um método de deposição eletroquímica com um sistema de três eletrodos a 0,1M

Dental Press J. Orthod.. Publicado em: 2020-08

11. Implant Volume Loss, Misfit, Screw Loosening, and Stress In Custom Titanium and Zirconia Abutments

Resumo O objetivo neste estudo foi verificar o efeito da diminuição de volume do implante, desajuste vertical entre o pilar e plataforma protética, torque de afrouxamento do parafuso protético e distribuição da tensão no parafuso em pilares de titânio e zircônia. Dez pilares personalizados de cada material foram fresados e conectados aos implantes d

Braz. Dent. J.. Publicado em: 2020-08

12. Effect of Growth Parameters on the Photocatalytic Performance of TiO2 Films Prepared by MOCVD

The present study evaluated the main factors that influence the photocatalytic activity of titanium dioxide (TiO2) films grown by metalorganic chemical vapor deposition (MOCVD) at 400 and 500 °C, in different growth times. The photocatalytic behavior was analyzed by measuring the methyl orange dye degradation at different pH values. Structural and morpholog

J. Braz. Chem. Soc.. Publicado em: 2020-06