Therefore, it is important to determine whether the PPARγ binding potency of contaminants changes with metabolism.
The minimum contamination index versus yield plot is especially suitable for cases where the product and impurity are expressed in different units and shows how the extent of contaminant removal changes relative to product yield.
Contaminants may exert direct effects on keystone facilitator and foundation species, and contaminant-induced changes in nutrient and oxygen dynamics may alter ecosystem function.
Scientists hope to learn more about soil contaminants, land changes, water flow, invasive species, ocean cycles, continent formation, the places atmospheric carbon are stored, the reasons that volcanoes erupt and the ways viruses and gene fragments move through the environment.
There are still big uncertainties, above all in how much of the obesity epidemic might be attributable to these chemical contaminants versus changes in diet and exercise, but this flurry of research supported by NIH should over time help us answer these questions.
Genetic techniques offer a powerful approach to assess contaminant-induced changes in populations.
Contaminant-induced changes in behavior, competition and predation/grazing rate can alter species abundances or community composition, and enhance, mask or spuriously indicate direct contaminant effects.
Increasing the contaminant concentration changed the fracture surface morphology from ductile-to-brittle failure mode, driven by diminished plasticity within the adhesive layer.
To determine whether contaminant concentrations change in response to storms, and if they therefore might act as tracers of focused recharge, samples were collected from Barton Springs at closely spaced intervals following three storms.
We used a suite of complementary biomarkers to signal contaminant-induced changes in the DNA structure and cellular physiology of the livers and gills of English sole (Parophrys vetulus).
