As mentioned above, the high thermal conductivity of sodium makes it difficult to achieve vigorous flows with a thermal gradient, so this device was modified to have a differentially rotating inner sphere (Kelly et al. 2006, 2007, 2010).
Part of what makes that difficult is how vigorous both the Election Commission and the Supreme Court are in vetting — and disqualifying — candidates.
Within the PF scale, the most difficult item (PF1: vigorous exercise) had the lowest mean and the easiest item (PF10: bathing and dressing) had the highest mean.
In the case of chain-growth reactions, which are generally exothermic, the heat evolved may cause the reaction to become too vigorous and difficult to control unless efficient cooling coils are installed in the reaction vessel.
Similarly, lambs from a prolonged and difficult birth were significantly less vigorous after birth, as they had taken more time to stand, reach the udder and to suck successfully.
During CPB, adverse effects triggered by acetate exposure would be difficult to detect amongst the vigorous metabolic and host defence responses to surgery [ 18, 27], hypothermia, and non-pulsatile blood flow [ 1].
The vigor with which Hamas is responding to this challenge (perhaps too vigorous), ironically, would be difficult, if not impossible, by the US-trained Palestinian forces under General Dayton's instruction in the West Bank.
This past week, I made many souffles and discovered that despite my efforts to challenge the classic recipe with loose liquid bases and vigorous folding, it is difficult to fail.
Second, a longer time spent walking may be a reflection of performing more vigorous activity, making it difficult to distinguish the impact of walking from other types of physical activity.
The lack of support for a retroflexed endoscope in the peritoneal cavity makes it hard to reach remote structures and makes vigorous retraction of tissues and organs difficult.
