Regarding composition evolution, aging at the lower temperatures yields Q-phase precipitates that are Cu-rich, yet deficient in Mg and Si: 44Al 22Cu 16Mg 16.5Si at.%.
The evolution age of proto-planetary nebulae is ~103 years and the lifetimes of planetary nebulae is about 20 000 to 40 000 yr.
In the middle of this quintessentially Hollywood carnival ride where rote religion is in a memetic competition with the reasoning of Galileo, pesky science struck us where we sat with a tectonic reminder of the evolution, age and fragility of the earth on which we reside.
Here we offer a general description of the emerging "new biology", and illustrate it with examples drawn from research on molecular evolution, aging, sex, and development.
Since the amount of food intake alters the metabolism, physiology and the aging process itself, generating different phenotypes, it is crucial for biological studies mainly associated with evolution, aging and age-related diseases to take food into account.
As DNA homeostasis would seem to require a continual state of DNA repair, its involvement in error-prone processes even at a low frequency would have important implications for the mutational mechanisms that could underlie evolution, aging, and disease.
As stated by Guillemot et al. (22), the observed increase in respiratory tract infections with a presumed viral cause cannot be explained by demographic evolution, age distribution, or by the occurrence of large epidemics in France.
Shapes of landforms and regularities of their spatial distribution, their origin, evolution, and ages are the subject of geomorphology.
To investigate the evolution of aging, we created conditions where the age-distribution was biased to young age, and most cells died before reaching advanced age.
Understanding the evolution of aging requires experiments that provide information about mutational effects on aging.
