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Performance evaluation of commonly used oil ram press machines
(CIGR Journal http://www.cigrjournal.org/, 2007)
The ram-press technology for oil expression has received a lot of attention in many African countries during the last two decades. The technology is based on manually operated mechanical
presses, which employ a slider-crank ...
Investigating the pumping process of a resonance-vibrating pump for medium-depth boreholes
(Research in Agricultural Engineering http://journals.uzpi.cz/web/RAE.htm, 2007)
This paper deals with the pumping process of a resonance-vibrating pump, which utilizes the resonance vibrations
of one degree-of-freedom oscillating system. The pump is powered by a mechanical shaker consisting of ...