The methods that are commonly used to measure weathering include electrical, impact echo, Schmidt rebound, penetration-obstruction, hardness tester, and ultrasonic methods [3 12].
This section presents NDE methods including electrical resistivity (ER), impact-echo (IE) and ultrasonic surface waves (USW).
There's even an echo of the electrical generator problem.
Keywords used were needle placement, botulinum toxin type-A, cerebral palsy, muscle, electrical stimulation, children, spasticity, injections, echo and ultrasound.
Nine subjects (seven males and two females), already considered to be affected at first evaluation, showed disease progression in terms of ECG, SAECG, two-dimensional echo abnormalities, and electrical instability.
Several decades later, Representative Tauzin, 57, moves with ease through the ornate halls and bistros of Capitol Hill, though he insists a simple pledge not to embarrass his father, a poor electrical worker now dead, still echoes in his ears.
Ed Boyden, a chemist and physicist turned electrical engineer who co-developed optogenetics, echoes that sentiment.
Women of all stripes have walked these echoing hallways: Alvin Ailey dancers, electrical engineers, former prisoners, retired teachers and an actress on the HBO series "The Wire".
Massimini and his colleagues record the brain's "echo" with electroencephalography, a measure of electrical activity, and then turn that data into a numerical score between 0 and 1.
A number of NDE technologies are currently used in bridge deck evaluation, including impact-echo (IE), ground penetrating radar (GPR), electrical resistivity (ER), ultrasonic surface waves (USW) testing, visual inspection, etc. (Gucunski et al. 2010; Wang et al. 2011).
