Difficulty in selection of a suitable animal model to simulate the actual mechanical loading and unloading conditions the implant might undergo in a human body environment.
The limitations to such experiments may be attributed to any of the following reasons: Difficulty in selection of a suitable animal model to simulate the actual mechanical loading and unloading conditions the implant might undergo in a human body environment.
The nonvolatile components present difficulties in solvent selection while the volatile components give rise to solvent recovery challenges.
Web Collage fosters the consideration of assessments as a crucial aspect of CSCL scripts and tries to overcome the difficulties in their selection and configuration.
However, the importance and difficulties in the selection of weighting functions of these approaches and the pole-zero cancellation phenomenon associated with it produces closed loop poles.
Another source of difficulties in the selection of the design amplitudes for PBD occurs when the standard spectrum shape is not capable of describing excitation by large, distant earthquakes.
Of course, the main research challenges and difficulties in materials selection stem from the requirement of reversibility and efficiency in both discharge and charge processes.
In stand-alone case-control studies, which are not nested within a cohort, the bias is likely to be somewhat greater because of difficulties in control selection when there is no roster of the underlying population producing the cases.
