However, a self-excited vibration induced by the inherent non-linear characteristics of valve spool motion coupled with the fluid dynamics can be generated during the working state of hydraulic systems due to inappropriate system parameters, which causes sustaining instability in the system and leads to unexpected performance deterioration and hardware damage.
The transgenerational continuous occurrence of multiple phenotypic variations, i.e., sustained phenotypic instability, from a single individual is characteristic of a "mutator-phenotype", as originally reported in Drosophila [ 28].
These positive findings are in contrast to the present findings of sustained haemodynamic instability and increased infections (bacteraemia and urinary tract infections) in patients subjected to the low blood glucose target (3.5 to 6.5 mmol/l versus 5 to 8 mmol/l).
For example, men may be more likely to sustain an instability event during contact with a sporting opponent.
Given this argument, there is a major flaw in their support of President Bush for re-election: he has conducted a failed, halfhearted operation in Afghanistan, created sustained and deadly instability in Iraq and the region, and fostered a schism with our traditional foreign allies.
These findings reveal that patients in the DS group sustained more anterior instability.
In certain conditions they may sustain hydrodynamic instabilities.
Under grazing flow they may sustain hydrodynamic instabilities and these are studied using a stability analysis, based on a simplified model: the liner is a mass spring damper system, the base channel flow is piecewise linear, and the inviscid, incompressible Rayleigh equation is used.
Animals were euthanized after 76 h of invasive MV or when severe respiratory or hemodynamic instability was sustained, irrespective of maximal ventilatory (inspiratory fraction of oxygen of 1 and PEEP ≥15 cm H2O) or hemodynamic support (fluid challenge ≥1.5 L and norepinephrine ≥3 µg/kg/min).
