It is generally considered that hydraulic machines offer superior lysing ability, especially when processing harder to break samples such as yeast or Gram-positive bacteria, due to their ability to maintain constant pressure throughout the piston stroke.
32.
But even this was almost an'accident', as the locomotive was intended to be a petrol hydraulic machine but the transmission components were held up because of the 1914-18 war, so it was converted to a steam engine.
33.
The white marble lighthouse was built in 279 B . C . under the reign of Ptolemy II . It stood in a colonnaded court and was equipped with a hydraulic machine to raise fuel to the roof.
34.
Locomotive design was similar to German diesel-hydraulic machines such as the DB Class V 200-the machine had a pair of high-speed diesel engines, each driving a separate hydraulic torque converter based transmission resulting in low mass compared to contemporary diesel-electric machines.
35.
For instance, to complement the arguments in his doctoral thesis, he built an elaborate hydraulic machine with pumps and levers, allowing him to demonstrate visually how the equilibrium prices in the market adjusted in response to changes in supply or demand.
36.
In 1773, Jouffroy d'Abbans met with the Perier brothers and studied in their workshop the " " ( Fire pump ), which had been used as a motive force for the hydraulic machine developed by Chaillot, in order to apply to ship propulsion.
37.
His interest in the working of the Griff engine brought him into contact with J . T . Desaguliers and contributed details and illustrations of hydraulic machines for the second volume of the latter's " Course of Experimental Philosophy ", eventually published in 1744.
38.
Destroyed in 1817, it was replaced by a " machine temporaire " during 10 years and then a steam engine entered in service from 1827 to 1859 . From 1859 to 1963, the pumping at Marly was assumed by another hydraulic machine conceived by the engineer Xavier Dufrayer.
39.
Proving more difficult will be the lighthouse, built around 279 B . C . during the reign of Ptolemy II . In its glory, it stood 400 feet ( 130 meters ) high in a colonnade court and was equipped with a hydraulic machine to raise fuel to the roof.
40.
One of the earliest hydraulic machines, the water clock was used in the early 2nd millennium BC . Other early examples of using gravity to move water include the Qanat system in ancient Persia and the very similar Turpan water system in ancient China as well as irrigation canals in Peru.
