The common-mode antenna (CMA) model and the equivalent differential-mode (DM) circuit are based on imbalance difference theory. theory describes mode conversion between common (CM) differential by focusing difference. CMA has been proven to provide excellent estimations of CM radiated emission. In this work, is combined with DM extend practical applications that include in both directions radia...

In this study, the upcycling and recycling applications for management of waste printed circuit boards (PCBs) were compared through sequential application Streamlined Life Cycle Assessment (S-LCA) Multi-Criteria Decision Making (MCDM) techniques. Upcycling determined as gold, copper-tin alloy, lead, copper recovery activated carbon production. And, portland cement, aggregate, sawdust, fiberglas...

Due to growing concern over environmental impacts and the pressure lower carbon footprints in metals industry, hydrogen (H2) has gained attention as a promising alternative for replacement of reductant fuel. This paper evaluates potential use an energy source reducing agent during processing waste printed circuit boards (waste PCBs) from e-waste through black copper smelting. The effect reducti...

This paper deals with a proposal for joint modeling and process optimization split-plot designs analyzed through mixed response surface models. It addresses the following main issues: i) building of responsesurface model multiple situation, by defining only one which specific coefficients areincluded studying association among responses; ii) considering fixed as well random effects within conte...

Measurements and simulations of thermal neutron attenuation by printed circuit boards (PCBs) are compared. Attenuation coefficients in typical epoxy-resin/glass-fiber substrate material can be as high 2 cm -1 , corresponding to 27% 1.6 mm the substrate. is attributed scattering off hydrogen resi...

This paper proposes a technique to enhance the quality factor (Q) of resonator, which can then be used realise bandpass filters (BPFs) with reduced insertion loss (IL) and improved passband selectivity. The main idea behind this is introduce negative resistance through parametric amplification effect, compensate losses from non-ideal passive components (e.g. capacitors, inductors, microstrips)....

Bioleaching was used to mobilize Cu, Zn and Ni from waste printed circuit boards (WPCBs) and eliminate hazardous metal species from these wastes. Pulp density (PD) and medium culture are two effective factors which have been optimized in this paper. The bacteria Acidithiobacillus ferrooxidans (A. ferrooxidans) and Acidithiobacillus thiooxidans (A. thiooxidans) and their mixture were grown and a...

The goal of this work is to find a solution for disposal of Vitroplast FR4, a material found in waste printed circuit boards. In this study, the influence of addition of Vitroplast, generated by mechanical treatment of printed circuit boards waste on concrete properties such as compressive strength was investigated in laboratory conditions. By substitution of filler (i.e. sand) in a mass ratio ...