Now showing items 31-34 of 34
New possibilities for the gauging of chiral bosons
(Physical Review D, 2003-02-15) [Artigo]
We study a new mechanism for the electromagnetic gauging of chiral bosons showing that new possibilities emerge for the interacting theory of chiral scalars. We introduce a chirally coupled gauge field necessary to mod out ...
Influence of aged Ti-15V-3Cr-3Sn-3Al alloy microstructure on chemical and electrochemical behavior in the Kroll reagent for metallographic etching
(Praktische Metallographie = Practical Metallography, 2003-01-01) [Artigo]
The chemical and electrochemical behaviour of the Ti-1 5V-3Cr-3Sn-3Al alloy in Kroll reagent has been studied after ageing at 350-600degreesC, to optimise metallographic etching. Etching tests and polarisation curves showed ...
An image analysis study of pit formation on Ti-6Al-4V
(Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 2003-01-20) [Artigo]
Metallographic techniques and digital image processing have been used to investigate heat-treated Ti-6Al-4V pitting corrosion, often used as aircraft components. LM and SEM metallography of 'as received', annealed (heating ...
A techno-economic analysis for MCFC cogeneration system
(American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES, 2003-12-01) [Trabalho apresentado em evento]
In this paper, a methodology for the study of a fuel cell cogeneration system and applied to a university campus is developed. The cogeneration system consists of a molten carbonate fuel cell associated to an absorption ...