Exact(18)
So, chemical pheophytinization was the primary mechanism of degradation.
Even so, chemical weapons were deployed in Europe during the first world war by both sides.
But large doses of resveratrol are required to show any effect, so chemical mimics like SRT-1720 were developed to activate sirtuin at much lower doses.
In the same way that a complex plant can be divided into basic unit operations, so chemical reactions involved in the process industries can be classified into certain groups, or unit processes (e.g., polymerizations, esterifications, and nitrations), having common characteristics.
Fluorescence is attractive because the dye is highly oil soluble and non-polar and can be detected at very low concentrations, so chemical interference between dye and drilling mud is minimized.
BY THE middle of June, if the latest pronouncements are to be believed, a draft version of the human genome in other words a list, in order, of the 3 billion or so chemical bases that form the letters of the genetic message needed to assemble and run a human being will be complete.
Similar(42)
Even the Oxford Dictionary defines a chemical as "a distinct compound or substance, especially one which has been artificially prepared or purified". So "chemical-free" products are adhering to a recognised usage.
This is the frontier region, so chemicals that are banned in Brazil can be smuggled in from Bolivia and Paraguay," says da Cunha.
Almost all were caused by the 60 or so chemicals in cigarette smoke that stick to DNA and deform it.
Of the 80,000 or so chemicals that go into the products of daily life, the vast majority have never been thoroughly tested for harmful effects.
The 3,000 or so chemicals that qualify as new must be registered with public authorities in the country where the manufacturer is based.
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