Results 211 to 220 of about 54,946 (273)

Advances in solid handling for continuous flow synthesis of specialty chemicals and pharmaceuticals. [PDF]

open access: yesCommun Chem
Johnston Z   +6 more
europepmc   +1 more source

The Influence of Operating Pressure Oscillations on the Machined Surface Topography in Abrasive Water Jet Machining. [PDF]

open access: yesMaterials (Basel)
Veljković DŽ   +5 more
europepmc   +1 more source

Physiological Control of Realheart Total Artificial Heart. [PDF]

open access: yesArtif Organs
Perra E   +7 more
europepmc   +1 more source
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Modelling a Double Piston Pump

Proceedings of SPE International Thermal Operations and Heavy Oil Symposium and International Horizontal Well Technology Conference, 2002
Abstract The idea of using serial arrangements of sucker rod pumps to efficiently produce heavy oil wells with high gas to oil ratio has been analyzed in Venezuela since 1996. However, models to calculate the dimensions of the required plungers have not been presented in previous literature. An analytical model is presented in this work,
Becerra, Oscar, Kenyery Frank
openaire   +2 more sources

A mercury piston pump

Journal of Scientific Instruments, 1966
A hydrocarbon-free backing pump is described in which only stainless steel, tungsten carbide and mercury are exposed to the vacuum system. The pumping speed is approximately 41. min-1 and the lowest pressure measured using the pump in conjunction with a cold trap was approximately 20 μtorr.
A J Davis, G J Ogilvie
openaire   +1 more source

Experimental Simulation of Piston Leakage in an Axial Piston Pump

Fluid Power Systems and Technology, 2005
A method used to introduce “artificial leakage” into an axial piston pump to simulate leakage from a worn piston is described in this paper. A pressure control servo valve with a very high frequency response was employed to divert flow from the pump outlet in a prescribed waveform directly to tank.
Zeliang Li   +2 more
openaire   +1 more source

The Pumping Dynamics of Swash Plate Piston Pumps

Journal of Dynamic Systems, Measurement, and Control, 1989
This paper describes a study of the cylinder pressure and flow in an oil hydraulic axial piston pump. A comparison is made between a theoretical model based on the effects of fluid compliance within the cylinder, and an improved model which accounts for the influence of oil momentum in the port plate region.
K. A. Edge, J. Darling
openaire   +1 more source

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