an irreversible engine

Cornu Copia : A Miscellaneum of lucriferous and most fructiferous Experiments, Observations, and Discoveries, immethodically distributed ; to be really demonstrated and communicated in all Sincerity.

[…] the first pair of legs in Ixodids functions rather as antennae than as gressorial limbs. In the hungry tick it is a frequent occurrence for the first pair of legs to be raised up, thrust forwards towards approaching objects […]

It is possible that the GSH-Px level or activity may have been adversely affected by increased SOD level or activity after a person is exposed to cigarette smoke. 21,26 This accumulation of undetoxified H 2 O 2, which belongs to the ROS group, may act as a constant source of oxidative stress and increase periodontal destruction in smokers.