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Seepage characteristics of fractured sandstone under deep high-confined water and mining-induced stress. [PDF]

Sci Rep
Tu H, Wu R, Jia S, Fang S, Zhang C.
europepmc   +1 more source

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Controller for an Axial Flow Blood Pump

Artificial Organs, 1996
Abstract: A rotary blood pump inherently provides only one noninvasive “observable‘” parameter (motor current) and allows for only one “controllable” parameter (pump speed). To maintain the systemic circulation properly, the pump speed must be controlled to sustain appropriate outlet Hows and perfusion pressure while preventing pulmonary damage caused
H, Konishi, J F, Antaki, D V, Amin, J R, Boston, J P, Kerrigan, W A, Mandarino, P, Litwak, K, Yamazaki, M, Macha, K C, Butler, H S, Borovetz, R L, Kormos   +11 more
openaire   +3 more sources

Axial Flow Catheter Pump for Circulatory Support

Biomedizinische Technik/Biomedical Engineering, 2002
The development of a percutaneously insertable catheter pump for temporary left ventricular and circulatory support in patients with acute ischemic cardiomyopathy.The expandable axial flow pump (introduction diameter 9-F, expanded diameter 6.5 mm) is mounted at the tip of a catheter, designed to be placed in aortic transvalvular position.
T, Schmitz-Rode, J G, Pfeffer, S, Graf, F, Buss, C, Brücker, T, Siess, R W, Günther   +6 more
openaire   +2 more sources

Advanced Suction Detection for an Axial Flow Pump

Artificial Organs, 2006
Abstract:  An automatic detection system for ventricular collapse was developed and tested in a first clinical trial as part of a physiological speed control concept for axial flow pumps. From this clinical experience, and based on the acquired data during this trial, an optimization of the developed system was performed.
Michael, Vollkron, Heinrich, Schima, Leopold, Huber, Robert, Benkowski, Gino, Morello, Georg, Wieselthaler   +5 more
openaire   +2 more sources

Development of an Axial Flow Blood Pump LVAS

ASAIO Journal, 1992
Nimbus, Inc., (Rancho Cordova, CA) and the University of Pittsburgh (Pittsburgh, PA) are collaborating to develop an implantable rotary blood pump that can be used as a left ventricular assist system (LVAS). The short-term goal of this project is to show that an LVAS based on this pump can operate safely and reliably during chronic implantations in ...
K C, Butler, T R, Maher, H S, Borovetz, R L, Kormos, J F, Antaki, M, Kameneva, B P, Griffith, T, Zerbe, F D, Schaffer   +8 more
openaire   +2 more sources

Suction Reverse Flow in an Axial-Flow Pump

Journal of Fluids Engineering, 1991
Experiments are carried out to determine the effects of different inlet geometries on the onset of suction recirculation and its associated power consumption in an axial-flow pump. The critical flow rate is determined by both the “string” visual technique and “pressure” method.
K. Alpan, W. W. Peng
openaire   +1 more source