- A
vacuum ejector, or
simply ejector, or aspirator, is a type of
vacuum pump,
which produces vacuum by
means of the
Venturi effect. In an ejector, a working...
- Papin's
working model of the
steam digester in 1679 and
Thomas Savery's
steam pump in 17th-century England. In 1712,
Thomas Newcomen's
atmospheric engine became...
- on both ends and
extended through the cylinder,
unlike the
cantilevered borers then in use.
Boulton wrote in 1776 that "Mr.
Wilkinson has
bored us several...
- many
years they were married. The
trouble started when
Oliver found corn
borers in his
terrace garden and he
starts to panic. He
calls the
Department of...
- the
field of zoomusicology, with her work on soft song in the
Asian corn
borer moth (Ostrinia furnacalis) and its
relationship to the
initiation of mating...
- 8,
Adams wrote to Wright: The day
after the
image was
thrown up by the
borer, Mr. ****ming, the
general manager of the
Union Pacific lines in that district...
-
horizontal wood and a
flywheel to
maintain accuracy and momentum. The hollow-
borer tip,
first used
around the 13th century,
consisted of a
stick with a tubular...
-
Historical marker on Elfreth's
Alley "The City of Philadelphia,
Emerald Ash
Borer Management Plan" (PDF). dcnr.state.pa.us. The City of Philadelphia. 2012...
- due to
decreased po****tions of
their pest host
European corn
borer;
European corn
borer is a
target of
Lepidoptera active Bt maize.
Biogeochemical parameters...
-
syndrome caused by an
impairment in the heart's
ability to fill with and
pump blood.
Although symptoms vary
based on
which side of the
heart is affected...
