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Surface study of vitreous carbon obtained from glassy carbon powder
(2012-05-22)
This work presents a surface study of monolithic vitreous (or glassy) carbon - MVC - obtained from vitreous carbon powder. Defective MVC pieces are crushed in a ball mill and size classified by sifting. The MVC powder is ...
Using the electrochemical impedance spectroscopy to characterize carbon steel in biodiesel medium
(2012-12-01)
Electrochemical impedance spectroscopy measurements using two carbon steel electrodes in soybean biodiesel medium, produced by methylic route, were performed in an electrochemical cell that allows positioning the two ...
The sequestration and storage model of atmospheric carbon dioxide
(2009-01-01)
Carbon dioxide (CO2) is the most important greenhouse gas. A gradual increase on its atmospheric concentration threatens significantly the climate. One of the main challenges of environment planning is to identify a model ...
Screen-printed carbon electrode modified with poly-L-histidine applied to voltammetric determination of chromium (VI)
(2006-12-01)
The present work reports the use of a screen-printed carbon electrode (SPCE) modified by poly-L-histidine film to determine chromium (VI). Stable films can be formed by direct addition of PH solution 1 % (w/v) on the ...
Preparation and structural characterization of hybrid composites of semiconductor oxides with amorphous carbon
(2018-01-01)
Organic/inorganic hybrids composites type have been reported as an alternative for the preparation of multifunctional materials with superior properties to those of individual constituents. In this work, hybrid composites ...
Production of thermoplastic composites from carbon fibers treated by dielectric barrier discharge
(2012-01-01)
This study deals with the production and characterization of carbon-reinforced polypropylene (CF/PP) composites from carbon fibers (CFs) treated by an atmospheric pressure dielectric barrier discharge (DBD). Following the ...
Polypropylene composites manufactured from recycled carbon fibers from aeronautic materials waste
(2017-01-01)
Carbon fiber composites are used in several industries such as, aerospace, automotive, civil engineering, sports goods and technical applications due to its low-weight, strength and stiffness. However, the technology of ...
The first Brazilian Field Lab fully dedicated to CO2 MMV experiments: From the start-up to the initial results
(2014-01-01)
Currently one of the main challenges in CO2 storage research is the development, testing and validation of accurate and efficient Measuring, Monitoring and Verification (MMV) techniques to be deployed at geological ...
New additive type amorphous-carbon/Zn modifier of the thermal conductivity of alcohol fuel
(2015-01-01)
A functional inorganic-additive modifier of the thermal conductivity of biofuel type alcohol anhydrous was developed based on an amorphous carbon nanocomposite containing dispersed zinc. Dispersion and modification of ...