In this work, the synthesis of bimetallic Ag and Cu particles on carbon vulcan (AgCu/C) is reported, synthesized by a simple galvanic displacement method using citrate tribasic hydrate as co-reducing agent commercial material based Cu/C template. The materials were characterized several physicochemical techniques, including TGA, ICP-OES, XRD, SEM, BET. catalysts evaluated cathodic for oxygen re...

This work reports a study carried out on the design and performance of galvanic and polarization resistance sensors to be embedded in concrete systems for permanent monitoring of the corrosion condition of reinforcing steel, aiming to establish a correlation between the galvanic currents, I(gal), and the corrosion currents, I(corr), estimated from the polarization resistance, R(p). Sensors have...

We investigated changes of postural responses to repeated bipolar galvanic vestibular stimulation on 5 consecutive days and once again after 3 months. Subjects consisted of 21 healthy volunteers. Except for the first day did the induced torque variance in response to galvanic vestibular stimulation not decrease within each test session, but there was a major reduction from day to day (p< 0.001)...

A finite element model of the protection mechanisms offered by Mg-based organic coatings was developed. The predicted change in corrosion potential AA2024-T351 as a function pH, water layer thickness, and inhibition oxygen reduction reaction. pH solution calculated taking into account Mg dissolution, precipitation Mg(OH) 2 , Al hydrolysis 3+ ions. critical value at which sharply decreases to va...

objective: the present study compares the efficacy of two most commonly used biofeedback relaxation techniques in the treatment of generalized anxiety disorder. method: 45 individuals with generalized anxiety disorder were randomly assigned to three groups (n=15): group i received electromyographic biofeedback relaxation training, group ii received alpha-electroencephalographic biofeedback rela...