Results 161 to 170 of about 1,195 (209)

Non-fasting versus fasting before percutaneous cardiac procedures: a systematic review and meta-analysis of randomized controlled trials. [PDF]

Perioper Med (Lond)
Balbaa E, Ibrahim AA, Bazzazeh M, Tabassum S, Ramadan S, Gadelmawla AF, Elshimy A, Altobaishat O, Abuelazm M.   +8 more
europepmc   +1 more source

Importance of environmental signals for cardiac morphological development in Atlantic salmon.

J Exp Biol
Vindas MA, Engdal VA, Kavaliauskiene S, Folkedal O, Höglund E, Moyano M, Øverli Ø, Frisk M, Johansen IB.   +8 more
europepmc   +1 more source

Left Ventricular Diastolic Function in Children with Atrial Septal Defects Improves After Closure by Means of Increased Hydraulic Force. [PDF]

Pediatr Cardiol
Sjöberg P, Clausen H, Arheden H, Steding-Ehrenborg K, Liuba P, Hedström E.   +5 more
europepmc   +1 more source

Excess Conventional Ultrafiltration Volume Increases Risk for Postoperative Cardiac Surgery-Associated Acute Kidney Injury. [PDF]

Kidney Dis (Basel)
Zhang H, Wang J, Wang T, Zhang J, Bian L, Li Z, Zhang Q, Liu G, Wang J, Teng Y, Yan S, Ji B.   +11 more
europepmc   +1 more source

Cardiac Myofibroblast-Derived Small Extracellular Vesicles Moderate Fibrotic Responses via piRNA-62788/PIWIL2-Mediated SRF Silencing. [PDF]

J Extracell Vesicles
Li S, Su S, Xian G, Li S, Zhong G, Wen L, Xu D, Zeng Q.   +7 more
europepmc   +1 more source

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Dynamics Modeling and Bifurcation Analysis for Valve-Controlled Hydraulic Cylinder System Containing Counterbalance Valves

Journal of Vibration Engineering & Technologies, 2021
The pilot ratio is a critical parameter of the hydraulic system containing counterbalance valves, which has an important influence on the dynamic characteristics and energy consumption. Generally, these two aspects are contradictory. That is, a high pilot ratio is easy to cause the poor dynamic characteristics of the system, while a low pilot ratio ...
Hao Sun, Jianfeng Tao, Chengjin Qin, Honggan Yu, Chengliang Liu   +4 more
openaire   +1 more source

Control Strategy of Adjustable Pilot Counterbalance Valves for Efficient Hydraulic Actuation

BATH/ASME 2022 Symposium on Fluid Power and Motion Control, 2022
Abstract Counterbalance Valves (CBVs) are commonly adopted in load handling machines such as cranes, winches, and telehandlers. Besides their load-holding and relief functionality, they allow establishing a counterpressure so that simple meter-in control approaches can properly operate in case of overrunning loads.
Annalisa Sciancalepore, Andrea Vacca, Steven Weber   +2 more
openaire   +1 more source

CFD Assisted Steady-State Modelling of Restrictive Counterbalance Valves

International Journal of Fluid Power, 2020
The counterbalance valve is an important component in many hydraulic applications and its behaviour hugely impacts system stability and performance. Despite that, CBVs are rarely modelled accurately due to the effort required to obtain basic model parameters and the complexity involved in identifying expressions for flow forces and friction. This paper
Jannik H. Jakobsen, Michael R. Hansen
openaire   +1 more source

Sliding Mode Analysis of a Counterbalance Valve Induced Instability in an Electrohydraulic Drive

Journal of Dynamic Systems, Measurement, and Control, 2022
Abstract This paper analyzes the dynamic effects of an electrohydraulic drive that uses a counterbalance valve for rod volume compensation. It shows that local stability analysis is not sufficient in this particular case to get general statements of the system's chattering properties.
Philipp Zagar, Rudolf Scheidl
openaire   +1 more source