Ma Fe
Mostrando 1-12 de 143 artigos, teses e dissertações.
-
1. Qual é a conduta profissional frente a lesões de mancha branca em dentição de bebês até três anos?
Crianças até três anos de idade que apresentam lesões de mancha branca são consideradas de alto risco para a doença cárie. Neste caso, o tratamento proposto é a escovação com dentifrício fluoretado, duas vezes ao dia, a investigação sobre o acesso à água fluoretada e a aplicação de produtos de uso profissional a cada três meses
. V
Núcleo de Telessaúde Espírito Santo. Publicado em: 12/06/2023
-
2. Boosting the Photocurrent of the WO3/BiVO4 Heterojunction by Photoelectrodeposition of the Oxy-Hydroxide-Phosphates Based on Co, Fe, or Ni
Here we investigated the photoelectrodeposition of oxygen-evolving catalysts (OECs) based on oxy-hydroxides-phosphates of Co, Fe, or Ni (CoPi, FePi, and NiPi) on the WO3/BiVO4 heterojunction and their activity in water oxidation. The OECs were deposited by cycles of (i) open-circuit potential (OCP) and (ii) applying a potential positive enough to oxidize the
Journal of the Brazilian Chemical Society. Publicado em: 2022
-
3. Microwave Assisted Ultra-Fast Method to Synthesize Carbonate-Phosphates, Na3MCO3PO4 (M = Mn, Fe, Co, Ni) - Relevant Materials Applied in Sodium-Ion Batteries
Although largely used in mobiles and electric vehicles applications, insertion batteries based on Li-ion technology are high-cost devices. These applications require high-performance energy storage systems with high-energy and high-power densities, which are better attained by Li-ion technology. However, stationary applications such as power plants and unint
J. Braz. Chem. Soc.. Publicado em: 2020-01
-
4. Pseudosection modeling and U-Pb geochronology on Piranga schists: role of Brasiliano Orogeny in the Southeastern Quadrilátero Ferrífero, Minas Gerais, Brazil
ABSTRACT In the Southeastern Quadrilátero Ferrífero, a package of metapelitic rocks previously attributed to the Archean Rio das Velhas Supergroup crops out in Piranga locality. This study presents the mineral chemistry and U-Pb-Hf zircon geochronology on foliated staurolite-garnet mica schists. Garnet and staurolite index minerals are syn- to post-kinemat
Braz. J. Geol.. Publicado em: 21/10/2019
-
5. Depicting the 3D geometry of ore bodies using implicit lithological modeling: An example from the Horto-Baratinha iron deposit, Guanhães block, MG
Abstract The definition of geological domains is essential for mineral exploration and is traditionally done manually, section by section, in a laborious, time consuming and subjective process, to construct a 3D model. The technique referred to as implicit modeling is an option to model deposits in a fast and practical manner. This article presents the litho
REM, Int. Eng. J.. Publicado em: 19/06/2019
-
6. Influence of CaO Addition, FeO/SiO2 , and MgO/SiO2 on the Melting Characteristic Temperatures of FeO-SiO2-MgO-CaO System
In order to decrease the oxidation temperature of fayalite in molten nickel slags, the influence of CaO addition, FeO/SiO2, and MgO/SiO2 on melting characteristic temperatures of FeO-SiO2-MgO-CaO system were investigated. The melting characteristic temperatures, including softening temperature (Ts), hemispherical temperature (Th), and flow temperature (Tf),w
Mat. Res.. Publicado em: 08/04/2019
-
7. Transport Properties of Polycrystalline Mixed Copper-Zinc Ferrites
Polycrystalline mixed Cu-Zn spinel ferrites with general formula Cu1-xZnxFe2O4 (x = 0.0, 0.1, 0.3, 0.5 and 0.7) have been prepared by solid-state reaction method. The effect of Zn2+ ions on transport properties such as DC and AC resistivity, dielectric constant and dielectric loss tangent has been presented in this paper. The resistivity increases with Zn co
Mat. Res.. Publicado em: 19/04/2018
-
8. Association between type of feeding at discharge from the hospital and nutritional status of very low birth weight preterm infants
The ideal feeding for premature babies has been the source of extensive debate. The aim of this study was to assess the association between type of feeding at discharge and the nutritional status of very low birth weight infants. This was a retrospective cohort of preterm babies with birth weight ≤1500 g, born between January 2006 and December 2013. The in
Braz J Med Biol Res. Publicado em: 01/03/2018
-
9. Efeito do amortecimento de nutrientes nos índices de germinação e nas características fisiológicas da plântula de stevia sob o estresse de salinidade
Resumo: A má germinação e o baixo crescimento das mudas de stevia (Stevia rebuadiana Bertoni) são problemas comuns no cultivo da planta. Por outro lado, a salinidade é um dos estresses ambientais abióticos que reduzem o desempenho do produto. O objetivo deste estudo foi avaliar o efeito do selênio (Se), ferro (Fe) e boro (B) nos índices de germinaç�
J. Seed Sci.. Publicado em: 2017-12
-
10. Estudos de mineralogia, isótopos estáveis (δ 18 O e δ 34 S) e geocronologia 40 Ar- 39 Ar sobre a carapaça hidrotermal do depósito de W-Sn Igarapé Manteiga, Rondônia
RESUMO: O depósito de W-Sn Igarapé Manteiga é formado por um stock granítico intrusivo no embasamento Paleoproterozóico. A mineralização está encapsulada em uma carapaça hidrotermal alumino-silicosa formada por greisen, veios-vênulas e brecha, desenvolvidos na zona apical do stock granítico. Os minerais de minério (wolframita ± cassiterita) e mi
Braz. J. Geol.. Publicado em: 2017-12
-
11. Parâmetros ecocardiográficos em cães saudáveis tratados com acepromazina, meperidina e sua associação
RESUMO Objetivou-se avaliar os efeitos da tranquilização com meperidina, acepromazina e de sua associação sobre os parâmetros ecocardiográficos em cães. Foram utilizados 12 cães adultos, da raça Rottweiler, submetidos ao exame ecocardiográfico sem utilização de sedação (controle - TC) e a três protocolos de tratamento, utilizando-se meperidina
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2017-11
-
12. Effect of PVA Concentration on Structure and Performance of Precipitated Iron-Based Catalyst for Fischer-Tropsch Synthesis
Fe2O3 catalysts were prepared by co-precipitation method with the assistance of polyvinyl alcohol (PVA) for Fischer-Tropsch synthesis. Effects of PVA concentration on structure and performance of the catalyst were investigated in a fixed reactor at 230-310 °C, 1.5 MPa, 2000 h-1, and syngas H2/CO = 2.0. The catalysts were characterized by N2 adsorption, scan
J. Braz. Chem. Soc.. Publicado em: 2017-08