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Hace 4 días · Abstract Nanocrystalline NiFe thin films of 11 μm thickness have been deposited on Cu wire using an electrochemical technique in galvanostatic mode with a sodium gluconate (SG) additive in the plating solution. The SG concentration is systematically varied from 0 g/L to 80 g/L, which results in a substantial enhancement in the soft magnetic characteristics and magnetoimpedance (MI) ratio of ...
Hace 5 días · Electrochemical steps are increasingly attractive for green chemistry. Understanding reactions at the electrode–solution interface, governed by kinetics and mass transport, is crucial. Traditional insights into these mechanisms are limited, but our study bridges this gap through an integrated approach combining voltammetry, electrochemical impedance spectroscopy, and electrospray ionization ...
Hace 4 días · Arsenic is the 53rd most abundant element in the Earth's crust, comprising about 1.5 parts per million (0.00015%). [43] Typical background concentrations of arsenic do not exceed 3 ng/m 3 in the atmosphere; 100 mg/kg in soil; 400 μg/kg in vegetation; 10 μg/L in freshwater and 1.5 μg/L in seawater. [44]
Hace 3 días · The hydroxyl complexes PbOH +, Pb 4 (OH) 4 4+, Pb 2 OH 3+, Pb(OH) 3 −, Pb 3 (OH) 4 2+, and Pb 6 (OH) 8 4+ are less common forms of Pb that can exist in addition to precipitate (Pb(OH) 2) that is more readily known. Therefore, examining at a pH of 4 ensures that the bulk of heavy metals are present in their ionized forms.
Hace 5 días · Measuring the chemical speciation of trace metals that are dominated by organic complexation, such as iron, copper, nickel, cobalt, and zinc, thus requires the characterization of metal-binding organic ligands, which comprise a small fraction of the much larger, heterogeneous, and largely uncharacterized pool of dissolved organic matter (DOM) that exists in seawater (Gledhill and Buck, 2012 ...
Hace 4 días · The calculations exhibit binding energies of about 40 kJ/mol, a value within the known range of hydrogen bond energies, especially toward anionic species 55 and the similar cobalt clusters. 32,33 In contrast, these values are significantly lower than the binding energies in cationic nickel–ethanol clusters. 26 Since a wavenumber of 3300 cm −1 equals an energy of ∼39 kJ/mol, we can assume ...
Hace 4 días · What is Cobalt Strike malware. Cobalt Strike is a licensed penetration software package developed by Forta (previously Help Systems), that helps red teams simulate an adversary in red-vs-blue games. While the software itself is completely legal and designed for cybersecurity testing, over the years, many versions of it have been cracked and ...
