Results 271 to 280 of about 6,739,698 (303)
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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
Testing Pumps as Fans and Fans as Pumps
Journal of Engineering for Power, 1968openaire +1 more source
Change in fresh properties of high-strength concrete due to pumping
Construction and Building Materials, 2021Zuhua Zhang +2 more
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