The literature shows that pyrite framboids containing sulfur can be oxidized and replaced by iron (hydroxy) oxides over time, leading to a complete loss of sulfur but maintaining the original framboidal structure [7], [8] including those found in dinosaur bones [9].
Figure 3 Variation of total oxide monolayer over time for the six different oxidation temperatures.
Second, macrophage activity may alter over time as a consequence of tumour-induced immune dysfunction, since nitric oxide production, which is a major effector molecule for tumour cell killing, was suppressed in macrophages of tumour-bearing mice [ 32].
"People change over time.
However, the ethylene oxide chains are, over time, auto-oxidized in aqueous solutions, resulting in cleavage of ethylene oxide units and formation of aldehyde-terminated chains.
Independently of the suspension composition, no significant increase in the amount of zinc oxide dissolved was observed over time.
The reason for the delay in the peak flow rate of the original samples was due to the thick aluminium oxide layer that developed over time.
Although initially deficient in Fe(III) oxide reduction, the omcE-deficient mutant adapts over time to reduce Fe(III) oxide [24].
Center characteristics (number of subjects enrolled from the center, geographical location, learning over time, nitrous oxide, and temporary clipping use) did not predict outcome, but subject and disease characteristics did.
In these settings, separating the influence of major roadways from activities on the airport grounds may be particularly challenging, given that aircrafts and ground-based mobile sources (i.e., cars, buses and trucks) both emit nitrogen oxides and often co-vary over time.
Smalt, a cheap alternative to ultramarine, contains cobalt oxide and glass, and discolours badly over time.
