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Mostrando ítems 1-10 de 2026
Labmade metallizer: Deposition of aluminum film on glass substrate and subsequent anodization to obtain aluminum oxideMetalizadora construída em laboratório: Deposição de filme de alumínio sobre substrato de vidro e posterior anodização para obtenção de óxido de alumínio
(2021-01-01)
In this work, the assembly of a low-cost metallizer is presented, based on physical vapor deposition, to obtain metallic aluminum film d eposited o ver a g lass s ubstrate. L ater, t he A l fi lm is an odized an d converted ...
A homogeneous and low-cost biosorbent for Cd, Pb and Cu removal from aqueous effluents
(Taylor & Francis Ltd, 2011-08)
Heavy metal pollution of aqueous effluents is a matter of widespread concern. The use of low-cost materials for the adsorption of heavy metals seems to be a suitable choice for waste water treatment. Polyporus tenuiculus, ...
Nanosized magnetite in low cost materials for remediation of water polluted with toxic metals, azo- and antraquinonic dyes
(Springer, 2015-10)
Nanosized magnetite has emerged as an adsorbent of pollutants in water remediation. Nanoadsorbents include magnetic iron oxide and its modifiers/stabilizers, such as carbon, silica, clay, organic moieties (polymers, ...
Stabilized Metal Nanoparticles from Organometallic Precursors for Low Temperature Fuel Cells
(Recent Patents on Nanotechnology, 2013, 7, 13-25 13, 2012-07-16)
In this work, a review of articles and patents related to the utilization of colloidal metal nanoparticles produced by the decomposition of organometallic precursors as supported electrocatalysts in different electrochemical ...
Polyphenol-SiO2 hybrid biosorbent for heavy metal removal. Yerba mate waste (Ilex paraguariensis) as polyphenol source: Kinetics and isotherm studies
(Elsevier Science, 2013-02)
A low-cost biosorbent hybrid material ready for application was obtained in this work. Yerba mate (Ilex paraguariensis) milling residual dust was used as a polyphenol source by ethanolic extraction. Polyphenols were ...
3.4/4.0 GHz Tunable Resonant Cavity in SIW Technology Using Metal Post and PIN Diode on a Low-Cost Biasing Network for 5G Applications
(Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2020)
This paper presents a dual-band resonant cavity in Substrate Integrated Waveguide (SIW) technology to operate in the range from 3.3 GHz to 4.2 GHz, spectrum considered for the Fifth Generation (5G) network. The cavity was ...
The Use of 3D Printing Technology for Manufacturing Metal Antennas in the 5G/IoT Context
(Sensors (Basel), 2021)
With the rise of 5G, Internet of Things (IoT), and networks operating in the mmWave frequencies, a huge growth of connected sensors will be a reality, and high gain antennas will be desired to compensate for the propagation ...
Artigo revisão: avanços recentes em brasagem metal-cerâmica
(ABCERAM, 2003)
Metal-ceramic joining has slowly but steadily become an important manufacturing step. The evolution of joining processes has allowed ceramics to be used in combination with metals in a number of hybrid devices from traditional ...