Unlike Venezuela's leader, fighting cancer and suffering the attrition of two decades in power, Mr Correa is fresh-faced and still in his first term.
In this work, we have investigated the attrition of two limestones used in a system of two interconnected circulating fluidized bed reactors operating in continuous mode as carbonation and calciner reactors.
This paper compares the attrition of two types of crystals having different mechanical and physico-chemical properties: laboratory made cubic sodium chloride crystals, used as model particles and elongated industrial sodium glutamate crystals.
The attrition of two potential oxygen-carriers for chemical-looping, 100 wt% mechanically-mixed, unsupported iron oxide (400 600 μm diameter) and 25 wt% copper oxide impregnated on alumina (600 900 μm diameter), has been studied.
Attrition tests of three fluid catalytic cracking (FCC) catalyst samples, named here as sample A, B and C, were carried out in an ASTM (American Society for Testing and Materials) design fluidized bed test unit.
These changes (increased attrition) may occur over time within the same country or as differences between the attrition rates of two similar countries and their populations of professionals.
The normalization of behaviour in children with severe problems may have been overestimated, because there was selective attrition of the two most impaired classes, a commonly observed phenomenon in this type of research [ 41].
The start was delayed, and the first 17 laps were run as a procession behind a safety car — with a more than 40-minute break because even that was too dangerous — and then the race became one of attrition, taking out two of the four title-contending drivers.
But despite the apparent calm at the front of the pack, the race quickly turned into one of attrition, with nine of the 24 cars that started failing to finish as several accidents and breakdowns brought out the safety car on two occasions.
They also needed to take inventory of injuries and attrition: two concussions and two blackouts (Davis and Marquis Daniels) and one ejection (Kendrick Perkins).
