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Effect of lubricant degradation on the tribological performance of a wheel-rail system
(2014-09-08)
Abstrac: In this work lubricant degradation and its relationship with tribological behavior was studied. Commercial grease (Sintono Terra HLK) and three versions of a newly developed product (Tribolub) for the Metro system ...
Hydrodynamic Parameters of Strelitzia Gum
(MDPI, 2018-10)
The flower of Strelitzia reginae generates abundant and viscous mucilage as exudate, which is purified in periods of heating–cooling, and finally precipitated with ethanol, obtaining strelitzia gum (StrG). By means of ...
Starch Consolidation Casting of Cordierite Precursor Mixtures - Rheological Behavior and Green Body Properties
(Wiley Blackwell Publishing, Inc, 2015-10)
The rheology of suspensions and mechanical properties of green bodies with cordierite composition (raw materials 37 wt% kaolin, 41 wt% talc, 22 wt% alumina, resulting in 46.6 wt% SiO2, 38.1 wt% Al2O3, 13.6 wt% MgO) and two ...
New copolymers of a tautomerizable beta-ketonitrile monomer: synthesis, characterization and solution tautomerism
(Wiley, 2012-10)
The monomer 2-methyl-3-oxo-5-phenyl-4-pentenonitrile (MOP) was prepared by reaction of ethyl cinnamate and propionitrile in alkaline mixture. This monomer exhibits three possible tautomeric forms. The tautomeric equilibria ...
Caracterização de poliacrilamida parcialmente hidrolisada em regime concentrado
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em QuímicaFísico-Química; Química, 2011-12-20)
A partially hydrolyzed polyacrylamide (HPAM) is a copolymer composed of
acrylamide and sodium acrylate. Due to its wide range of applications there are different
methods for its quantification and characterization in ...
Reometria de suco concentrado de frutas
([s.n.], 1996)