The difference between what is genuinely perceived and its realistic interpretation is just the difference between the regularities in our perceptions and the hypothesis of enduring, substantial sources of the perceived regularities (Helmholtz 1977, 138 140).
If adaptive thermogenesis does occur in polar bears, and is fueled by gluconeogenesis similar to Arctic ground squirrels, it would not be surprising for genes in the gluconeogenesis pathway to be under selection, because the diet of polar bears is composed primarily of blubber and is essentially devoid of any substantial source of carbohydrates (Ramsay and Hobson 1991; Grahl-Nielsen et al. 2003).
He was brilliant at spotting gaps, finding the right authors to fill them, and producing increasingly attractive books, most of them being the only substantial sources of information on their subjects.
Since the financial crisis of 2008, the mortgage market has had two substantial sources of government support.
At that time, to maintain its growth (and stock value), it'll need other substantial sources of profit.
Nonetheless, he says it is important to remember, amid these day-to-day swings, that there are substantial sources of strength underpinning global markets.
As well as fossil fuel combustion, land-use changes in Amazonia have been substantial sources of carbon to the atmosphere.
However, our principal components analysis revealed four components with eigenvalues >1 (suggesting four substantial sources of variance), so we also examined a four-factor solution.
Several observations and case-control studies suggested beef and milk from dairy cattle were substantial sources of Newport MDR-AmpC infection in humans (6 – 8 ).
Woody wetland (25.7 %), evergreen forest (19.9 %), and agricultural lands (pasture/hay, 15.5 %; cropland, 11.5 %) were substantial sources of urban growth (Fig. 6).
