Results 221 to 230 of about 25,872 (267)
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Multidepth Pumping Tests in Deep Aquifers
Groundwater, 2014Abstract Multidepth pumping tests ( MDPTs ), in which different sections of a screen are pumped in sequence, are not being used by hydrogeologists, despite the capability of such tests to resolve uncertainties in the estimation of aquifer characteristics.
N, Alam, T N, Olsthoorn
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Test of Coal Slime Pumping by Single-Screw Pump
Advanced Materials Research, 2013Previous research on thick pastes such as coal slime was using two-cylinder piston pump as power equipment.Since the pressure fluctuation was big,flow measurement was not that accurate. In order to solve the problem, this paper will presents a feasibility study on conveying coal slime by single-screw pump. We used a single-screw pump as power equipment
Hua Xu Yang +4 more
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Testing of pumping speed of miniature sputtering ion pump
2010 8th International Vacuum Electron Sources Conference and Nanocarbon, 2010This paper discusses about testing of pumping speed. A sputtering ion pump consists basically of two electrodes, anode and cathode, and a magnet. The method for testing pumping speed is called dynamic flow conductance.
null Tian Liang +2 more
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Analysis and Test of a Viscous Pump with Radial Pumping Grooves
Tribology Transactions, 1994A new disk-type viscous pump utilizing multi-radial pumping grooves on its stator has been designed, analyzed and subsequently fabricated and tested. Analyses show that this new design pump exhibits higher flow rate characteristics than the recently reported multi-lobe design for the same pump size and rotor-stator clearances.
Winoto, S.H., Yohanand, K.
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Testing of turbomolecular pumps
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1992Turbomolecular pumps (TMPs) are used to provide clean pumping to attain pressures down into the 10−10 Torr range. Some of our data indicated that the pumping speeds and compression ratios claimed by some manufacturers of TMPs were greatly overstated. To measure these parameters, an apparatus was constructed following AVS recommended practices. Hydrogen,
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Drill Stem Testing with Jet Pump
SPE Latin America Petroleum Engineering Conference, 1990ABSTRACT While DST is not new to the oil industry, some of the methods of augmenting flow are changing. One of the more recent changes to be accepted is the use of the Jet Pump to improve producing capabilities and make DST more meaningful and more accurate.
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Development of a numerical pump testing framework.
Artificial organs, 2014It has been shown that left ventricular assist devices (LVADs) increase the survival rate in end-stage heart failure patients. However, there is an ongoing demand for an increased quality of life, fewer adverse events, and more physiological devices. These challenges necessitate new approaches during the design process.
Kaufmann, Tim A. S. +4 more
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An overview on the effect of pumping on concrete properties
Cement and Concrete Composites, 2022Xiang Hu, Zhuguo Li, Qiang Yuan
exaly
Prediction of nonlinear pumping pressure loss of concrete induced by rheological property changes
Cement and Concrete Research, 2023Qiang Yuan, Lilin Lao, Fumin Li
exaly