Since bitter taste is thought to help prevent the intake of toxic substances, diversity at TAS2R genes could reflect the action of natural selection on the ability to recognize some bitter compounds rather than others.
The students' diverse objects provide intimate windows on these cultures, and in the process, show how understanding the very substance of diversity actually reveals a more concrete sense of our shared New York and American identity.
Availability and supply analysis of novel psychoactive substances (NPS) is complicated by sheer substance variety, the introduction of ever-newer compounds, linguistic diversity, evolving usage patterns in various nationalities or communities, and a shifting regulatory and legal landscape.
'Human reason is a tincture infused in about equal strength in all our opinions and ways, whatever their form: infinite in substance, infinite in diversity'[22] says the chapter on custom.
This could be due to their ability to utilize a wide array of organic-often refractory substances, their metabolic diversity, and their ability to grow in oligotrophic conditions, with the latter being more obvious in the marine environment.
Chalcones are ubiquitous substances found in a diversity of plants.
Boyle's chemical theory attempts to explain the diversity of substances, including the elements, in terms of variations of shape and size and mechanical arrangements of what would now be called sub-atomic atoms or corpuscles.
Microorganisms produce a range of chemical substances representing a vast diversity of fascinating molecular architectures not available in any other system.
However, this development is hampered by the difficulties that accompany the assessment of molecular mechanisms and pharmacological actions of multicomponent preparations that contain an enormous chemical diversity of substances [ 1- 3].
In recent years, a growing body of evidence has shown that herbs, fruits, nuts, and a wide diversity of substances commonly used in daily diets have definitive effects upon the metabolic pathway of inflammation, with consequent inhibition of prostaglandins synthesis.
