Sentence examples for unstable occurrence from inspiring English sources

We speculate that the strictly vertical evolution, the rare and unstable occurrence of nhe copies and high sequence conservation may be evidence for an additional function of Nhe.

The highly unstable occurrence of ycf66 suggests that it seems unessential for the fern plastid function, or it has been transferred to nuclear genome.

To study the specific behavior of LocARNAscan, we compared the performance of LocARNAscan and Infernal on a designed target containing a series of thermodynamically stable and (presumably) unstable occurrences.

Moreover, in patients with recent myocardial infarction or unstable angina, the occurrence of silent ischemia is a poor prognostic factor and is associated with a significant increase (relative risk ~ 3 4) in major cardiac events and death (Cohn et al. 2003).

Under the second model, the metapopulation model, the degree of genetic structuring depends on the temporal stability of habitats, so in an unstable environment the occurrence of locally adapted gene pools can be curtailed because of local extinctions (and subsequent recolonizations, reviewed in Beebee and Rowe 2004; McQuinn 1997; Rieman and Dunham 2000).

Consequently, for a heat flux density of 1 MW/m2 a parameter chart could be generated, showing the possible occurrence of "unstable" or "stable" thermal and fluid mechanical behaviour.

The numerical study has been performed to investigate the occurrence of unstable flow in heated ceramic foam materials.

Engineering planning also needs to take into account the occurrence of unstable units such as, low-cohesive bedrock (large landslides) and unconsolidated littoral deposits (liquefaction).

Such techniques are somewhat limited in their ability to predict all of the dynamic characteristics, including bifurcations leading to the occurrence of unstable, subharmonic, quasi-periodic and/or chaotic solutions.

With increasing the applied load this delamination is propagated up to the occurrence of unstable delamination growth or the first fiber breakage known as the final failure of the component.

Eroded uplands are marked by the occurrence of unstable rocky slopes and outcrops of bedrock.