Mars500, however, involved postural loading unlike microgravity, which perhaps provided sufficient stimulus to prevent loss of strength, although interpretation of data from so few subjects is challenging.
Mercury porosimeter experiments have been traditionally used to investigate the pore structure of oil bearing rocks, although interpretation based upon the oversimplified parallel-bundle model is inadequate to explain many practical aspects of oil recovery.
Spectroscopic measurements of solvatochromic and fluorescent probe molecules in room temperature ionic liquids provide insights into solvent intermolecular interactions although interpretation of the different and generally uncorrelated "polarity" scales is sometimes ambiguous.
Gallup (1970) developed an experimental test of mirror self-recognition that has become widely used as a test of self-awareness, although interpretation of the test remains controversial (see the section on self-consciousness and metacognition below).
Further, by comparing trends in nutrient attenuation within the context of diel changes in high frequency oxygen data from different compartments, it was demonstrated that changes in dissolved oxygen were related to changes in nutrient concentration across the CW, although interpretation of this was complicated by changing hydro-climatological conditions.
Mendelian randomization studies generally do not support a causal role of serum urate in kidney disease, hypertension, or diabetes, although interpretation is complicated by nonhomogeneous populations, a failure to consider environmental interactions, and a lack of understanding of how the genetic polymorphisms affect biological mechanisms related to urate.
Although interpretation of the RF results can be challenging on the surface, this type of data cannot be obtained by traditional electrophysiological techniques and may prove useful in understanding membrane-bound protein dynamics.
First, spike width has been used to distinguish excitatory from inhibitory neurons, although interpretation is complicated because not all interneurons have narrow spikes and some narrow spiking neurons are not interneurons [1], [2], [3], [4], [5].
Focusing instead on the dispersion of node traits in a bidimensional plot aims at capturing more of the tree's features [72], although interpretation of such analysis is also difficult [3], [10].
Further analysis by organization into core versus accessory subunits permits additional insight, although interpretation is limited by sample size of core subunits in which complex I content was quantified (Figure S4).
Although interpretation of mass spectra using de novo tools has made considerable progress, the approach remains challenged by the shear number of possible amino acid sequence interpretations for measured fragmentation mass spectrum [3], [4].
