Sentence examples for chemical clock from inspiring English sources
noun
Any mixture of compounds whose relative concentrations oscillate, and in which such change is marked by a visible rhythmic change in colour
Once the product is exposed to the elements, a chemical clock starts ticking, turning the disc black and making it unreadable by a DVD player's laser after the designated time has elapsed.
Now, astronomers have used a chemical clock to date a dense part of this cloud that has given birth to a star system named IRAS 16293-2422 (see box in image above).
This correlation suggests that Shaw somehow affects chemical signaling between clock neurons in non-PDF cells.
Samsung also said that in 2007, it implemented a round-the-clock chemical monitoring system, and that out of an "abundance of caution," chemical levels were kept to one-tenth of legal limits.
In New York City, technicians stare through microscopes at any organisms they find, and pore through computer printouts of chemicals around the clock, making sure nothing out of the ordinary appears.
New circadian therapies might arise from large-scale chemical screens looking for clock-improving molecules231,232,233 (Fig. 9).
Thermodynamics is time's arrow, while chemical kinetics is time's clock.
The moving parts of the clock consist of chemical tags on DNA molecules that control whether genes are active in cells.
"While we can't literally turn back time, turning carbon dioxide back into coal and burying it back in the ground is a bit like rewinding the emissions clock," Torben Daeneke, a chemical engineer at the Royal Melbourne Institute of Technology RMITT) and coauthor of the new study, said in a statement.
Now, Gallardo et al. have shown that mice need dopamine a neurotransmitter that is often called the brain's 'feel-good chemical' to maintain the internal clock that supports food anticipatory activity.
DURING World War II, as factories ran around the clock, they spilled chemicals into the river, Mr. Nelsen said.
