Rugosity
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. Electroanalytical Method for Determination of Trace Metals in Struvite Using Electrochemically Treated Screen-Printed Gold Electrodes
We present an electroanalytical method using square-wave anodic stripping voltammetry on electrochemically-treated screen-printed gold electrodes to the simultaneous determination of lead(II), copper(II) and mercury(II) in struvite (natural fertilizer produced from urine). Electrochemical treatment via cyclic voltammetry of the working electrodes increased s
J. Braz. Chem. Soc.. Publicado em: 2020-09
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2. Chemically Reduced Graphene Oxide on Gold Electrodes from Recordable CDs: Characterization and Potential Sensing Applications
This work presents the development and characterization of a new chemically modified electrode exploiting recordable Au-rewritable compact discs (AuCDs) as substrate for drop casting of a chemically-reduced graphene-oxide slurry focusing on simple and low-cost electrochemical sensors. Increase in electrochemical responses in cyclic voltammetric and amperomet
J. Braz. Chem. Soc.. Publicado em: 2020-03
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3. A dinosaur ilium from the Late Triassic of Brazil with comments on key-character supporting Saturnaliinae
Abstract: Discoveries in Carnian-aged rocks are establishing a rich and diverse dinosaurian fauna at the so-called ‘dawn of the age of dinosaurs’ in the Late Triassic of Western Gondwana. Accordingly, Brazilian strata from the Candelária Sequence have contributed extensively to this trend. Here, we present a new dinosaurian specimen (CAPPA/UFSM 0200) fr
An. Acad. Bras. Ciênc.. Publicado em: 08/08/2019
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4. Abiotic effects on the cover and richness of corticolous lichens on Araucaria angustifolia trunks
ABSTRACT Lichens play a key role in natural ecosystems, as they can function as primary producers, recycle minerals and fix nitrogen. Despite their environmental importance, little is known about lichen ecology in Brazil, and especially about how abiotic factors may influence their spatial distribution. In this study, we aimed to verify how the cover and ric
Acta Bot. Bras.. Publicado em: 21/09/2018
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5. Development and characterization of pullulan-polymethacrylate free films as potential material for enteric drug release
ABSTRACT Free films of pullulan-polymethacrylate associations were produced by casting process to develop a novel target-specific material. For characterization, tests of water vapor permeability, swelling index, infrared absorption spectroscopy, thermogravimetric analysis, scanning electron microscopy and mechanical analysis were performed. The polysacchari
Braz. J. Pharm. Sci.. Publicado em: 31/07/2017
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6. Can regional and local filters explain epiphytic bryophyte distributions in the Atlantic Forest of southeastern Brazil?
ABSTRACT Environmental conditions in distinct tropical rainforest phytophysiognomies can act as regional filters in determining the distribution of montane bryoflora likewise, local filters inherent to phorophyte species can have modulating influences. We analyzed the bryophyte communities in three phytophysiognomies of Atlantic Forest, in order to examine t
Acta Bot. Bras.. Publicado em: 05/09/2016
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7. Titanium bioactivity surfaces obtained by chemical/electrochemical treatments
There are various surface treatments used to modify titanium surfaces to render it bioactive. In this study commercially pure titanium surfaces (cp Ti), grade 2 were modified by acid etching (AE) and anodic oxidation (OA) in order to evaluate the bioactivity in vitro of these surfaces using the simulated body fluid (SBF). The AE was realized using a mixture
Matéria (Rio J.). Publicado em: 2014-03
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8. Benefits of oxygen and nitrogen plasma treatment in Vero cell affinity to poly(lactide-co-glycolide acid)
Cell adhesion on materials surface is critical because this phenomenon occurs before other events, as cell spreading, cell migration and cell differentiation. it is commonly accepted that the adhesion of cells on solid substrate is influenced by several substratum surface properties, such as wettability, surface charge, roughness and topography. plasma techn
Mat. Res.. Publicado em: 23/04/2013
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9. Fabricação e caracterização de filmes automontados de PAH/BSA / Fabrication and characterization of LbL films of PAH / BSA
In the last years techniques have been developed for the development of science and technology concerning all science fields, such as physics, chemistry and biology. The study of the protein adsorption processes on the solid surfaces is of great importance in the development of biocompatible materials. The Layer-by-Layer deposition technique, where self-asse
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/08/2010
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10. Influência da rugosidade gerada pelo tratamento superficial do substrato de concreto na aderência do revestimento de argamassa / Influence of the rugosity produced by concrete substrate treatment in the adherence of mortar coverings
O maior uso do concreto de alta resistência, o uso de desmoldante e/ou o emprego de fôrmas plastificadas são fatores que cada vez mais contribuem para a superfície do concreto tornar-se lisa e de baixa porosidade superficial. Dessa forma, há prejuízo da absorção capilar que deve existir na camada superficial da base, de modo a permitir a penetração
Publicado em: 2010
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11. Assessment of superficial rugosity of cast titanium in fluoride solutions and artificial salive
The purpose of this study was to investigate the superficial rugosity of commercially pure titanium cast, under the action of different fluoride dental solutions and synthetic saliva. All specimens received the standard metallography procedure for titanium and were divided in groups: Group 1) synthetic saliva pH 7.0; Group 2) 1.23% APF gel pH 3.5;, Group 3)
Materials Research. Publicado em: 2009-06
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12. Avaliação da rugosidade superficial do solo utilizando técnicas de sensoriamento remoto e análise de imagens / Evaluation of soil surface roughness using remote sensing techniques and analysis of image
To study the top-soil rugosity using the remote sense techniques, we used one area of 1.200 m, divided on three blocks with five treatments each one, where the dimensions of the parcels were from 20 m of length by 3 m of wideness and 1 m between each parcel, and each block had an area of 20 x 18 m. In every block it was made an assortment of the localization
Publicado em: 2009