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Decomposição térmica do ácido oleico na presença de sais de ferro para obtenção de biocombustíveis e outros produtos de interesse industrial
(Universidade Federal de Minas GeraisUFMG, 2019-03-13)
In this work, the thermal decomposition of oleic acid (OA) wasinvestigated in the presence of iron compounds, in order to obtain biofuels and other high added-value products. For such, iron and OA based precursors were ...
Desenvolvimento do processo de sopro com lança de 3 furos no convertedor AOD-L da ArcelorMittal Inox Brasil
(Universidade Federal de Minas GeraisUFMG, 2011-03-18)
The AOD converter is the main equipment used on the stainless steels production. The production of stainless steel in AOD-L occurs through injection of a mixture of oxygen and inert gas by tuyères and blowing oxygen by one ...
Modelamento matemático do escoamento de fluidos no processo RH para previsão da taxa de circulação do aço
(Universidade Federal de Minas GeraisUFMG, 2011-05-25)
The RH process is a refining process used in the production of interstitial free steels. In this process, vacuum and inert gas injection promote the refining reactions (removal of C, H and N). The vacuum chamber is connected ...
Análise sensitiva aplicada à solução de problemas diretos e inversos em química
(Universidade Federal de Minas GeraisUFMG, 2016-02-25)
Problems in science are usually addressed in a direct scheme in which the output data (effects) are determined from an input (cause). However, studies can be done inverting the causality logic, and this approach is so ...
Problemas diretos e inversos no estudo de estrutura de sistemas líquidos e gasosos
(Universidade Federal de Minas GeraisUFMG, 2014-02-25)
This work has as main objective the study of microscopic properties oftwo systems, clusters of noble gases and pure liquids. In both the property aimed is the internal structure, but in each case it is approached differently. ...
Obtenção de solventes para hidroformilação a partir de matéria-prima biorrenovável
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE QUÍMICAPrograma de Pós-Graduação em QuímicaUFMG, 2021-04-30)
Dipentene and turpentine oil are co-products of the cellulose industry used as solvents in industrial processes. The presence of alkenes in the components of these oils makes them unsuitable as solvents for various reactions, ...
Análise da influência dos metais de adição na soldagem de chapas de aço microligado galvanizadas soldadas pelo processo GMAW robotizado
(Universidade Federal de Minas GeraisBrasilENG - DEPARTAMENTO DE ENGENHARIA MECÂNICACurso de Especialização em SoldagemUFMG, 2016-12-07)
The addition of alloying elements has the main purpose to control the microstructure of the
material, reflecting in its microscopic, macroscopic, physical, mechanical and electrical
properties, allowing the material to ...
Treatment of PVC using an alternative low energy ion bombardment procedure
(Elsevier B.V., 2011-12-15)
In many applications, polymers have progressively substituted traditional materials such as ceramics, glasses, and metals. Nevertheless, the use of polymeric materials is still limited by their surface properties. Frequently, ...
Optical and electrical properties of polymerizing plasmas and their correlation with DLC film properties
(Springer, 2004-03-01)
Diamond-like carbon (DLC) films were grown from radiofrequency plasmas of acetylene-argon mixtures, at different excitation powers, P. The effects of this parameter on the plasma potential, electron density, electron ...
On Ti-18Si-6B and Ti-7.5Si-22.5B powder alloys prepared by high-energy ball milling and sintering
(ABM, ABC, ABPol, 2012-12-01)
Recently, a new ternary phase was discovered in the Ti-Si-B system, located near the Ti6Si2B composition. The present study concerns the preparation of titanium alloys that contain such phase mixed with α-titanium and other ...