Nowadays, in power systems, we still lack the existence of standardized test systems that can be used to benchmark the performance and solution quality of proposed optimization techniques.
However, direct evidence is lacking for the existence of geofluid in the postulated reservoir.
Therefore, even if some annotated plant miRNAs deposited in the miRbase were proved to have TE origins, evidences are still lacking for the existence of bona fide TE derived miRNAs that match the updated plant miRNA annotation rules.
The reductive shift noted upon ER calcium depletion is significantly attenuated but not completely lost in cells lacking CRT, indicating the existence of other contributory factors.
In other words, Islamist victories in recent elections in the middle east may reflect the lack, not the existence, of true democracy, because any candidates advocating other values are brutally repressed.
Voting games over redistributive tax schedules lack in general the existence of a static equilibrium (see Marhuenda and Ortuño-Ortin [1], Hindriks [2], De Donder and Hindriks [3]).
At present, we lack evidence for the existence of toxic oligomeric structures and thus the model we present is speculative.
For instance, obatoclax-induced cytotoxicity is still observed in some cell systems lacking BAK and BAX expression, suggesting the existence of complementary activities acting on alternative pathways.
The type of the skeletal deformities observed in this study were the lack of or the existence of atrophic operculum, snout/mouth dysplasia, lack of dorsal fin and hypoplasia of the caudal fin, with the last two of them being of significant commercial importance (Chatain and Corrao 1992; Morretti et al. 1999).
If I think about the future, the challenges ahead could include the lack of security, the existence of bullies, the government's lack of power and management capability to attract specialists and to establish efficient institutions, widespread administrative corruption, reprehensible customs and traditions, and unemployment amongst the young, educated population.
