Disadvantages of US include: the operator-dependent nature, difficulty related to the detection of isoechoic hepatic lesions and those <1 cm in size, as well as limitations in the characterization of hepatic lesions, which are not always metastatic, even in cancer patients [ 14, 15].
The other limitation is computational in nature; numerical difficulties arise when calculating natural frequencies, modes of vibration and dynamic stiffness of continuous models at high frequency.
Given the nature of difficulties experienced by children with severe SLI, it was pre-empted that there may be general difficulties in administering a questionnaire to this cohort of children.
Patenting of life forms is however different from that of mechanical inventions and pose unique problems such as establishing the "inventive" nature and difficulties in preventing infringements due to the ability of the organism to self-replicate.
Nevertheless, a dispassionate look at what occurred in the election is useful in understanding the nature and difficulties of the path ahead, including problems that transcend mere policies.
This fact is the nature of difficulties in feature extraction.
This depauperate history of collection apparently reflects the rarity of P. chromatophora in nature and difficulties in its culture.
Sampling methods, although not necessarily a limiting factor in identifying the wide range of these viruses circulating in nature, pose difficulties in discerning the usefulness of a report and comparing fluctuations in subtype virus prevalence between years or areas.
The technique of BAMPS TwPdi remains a method that is not applicable to a large population of patients because of the fairly invasive nature, technical difficulties, and limitations concerning patients' condition and tolerance.
