Results 11 to 20 of about 1,543,308 (302)

A novel roller pump for physiological flow. [PDF]

Artif Organs, 2020
AbstractHaving physiological correct flow waveforms is a key feature for experimental studies of blood flow, especially in the process of developing and testing a new medical device such as stent, mechanical heart valve, or any implantable medical device that involves circulation of blood through the device.
Chong A, Sun Z, van de Velde L, Jansen S, Versluis M, Reijnen MMPJ, Groot Jebbink E.   +6 more
europepmc   +5 more sources

LES of non-Newtonian physiological blood flow in a model of arterial stenosis [PDF]

Medical Engineering and Physics, 2012
Large Eddy Simulation (LES) is performed to study the physiological pulsatile transition-to-turbulent non-Newtonian blood flow through a 3D model of arterial stenosis by using five different blood viscosity models: (i) Power-law, (ii) Carreau, (iii ...
Ahmed, Bate, Berger, Carreau, Casson, Cross, Fry, Fung, Gonzalez, Hron, Huang, Johnston, Ku, Ku, Lees, Loudon, M.C. Paul, M.M. Molla, Merrill, Milnor, Molla, Neofytou, Paul, Piomelli, Quemada, Smagorinsky, Stein, Sutera, Tu, Valencia, Walburn, Womersley   +31 more
core   +3 more sources

Sleep Alters the Velocity of Physiological Brain Pulsations in Humans [PDF]

Advanced Science
Introduction: The clearance of brain metabolites increases during sleep, in association with increased spectral power of the three main cerebrospinal fluid (CSF) flow drivers: cardiovascular, respiratory, and vasomotor brain pulsations.
Ahmed Elabasy, Heta Helakari, Tommi Väyrynen, Zalán Rajna, Niko Huotari, Lauri Raitamaa, Ville Isokoski, Matti Järvelä, Mika Kaakinen, Johanna Piispala, Mika Kallio, Vesa Korhonen, Tapio Seppänen, Vesa Kiviniemi   +13 more
doaj   +2 more sources

Heat Transfer Attributes of Gold–Silver–Blood Hybrid Nanomaterial Flow in an EMHD Peristaltic Channel with Activation Energy

Nanomaterials, 2022
The heat enhancement in hybrid nanofluid flow through the peristaltic mechanism has received great attention due to its occurrence in many engineering and biomedical systems, such as flow through canals, the cavity flow model and biomedicine.
Basma Souayeh, Katta Ramesh, Najib Hdhiri, Essam Yasin, Mir Waqas Alam, Kawthar Alfares, Amina Yasin   +6 more
doaj   +1 more source

Physiologic blood flow is turbulent [PDF]

Scientific Reports, 2020
AbstractContemporary paradigm of peripheral and intracranial vascular hemodynamics considers physiologic blood flow to be laminar. Transition to turbulence is considered as a driving factor for numerous diseases such as atherosclerosis, stenosis and aneurysm.
Saqr, Khalid M., Tupin, Simon, Rashad, Sherif, Endo, Toshiki, Niizuma, Kuniyasu, Tominaga, Teiji, Ohta, Makoto   +6 more
openaire   +2 more sources

Simulation of Gold Nanoparticle Transport during MHD Electroosmotic Flow in a Peristaltic Micro-Channel for Biomedical Treatment

Micromachines, 2022
The study of gold nanoparticles (AuNPs) in the blood flow has emerged as an area of interest for numerous researchers, due to its many biomedical applications, such as cancer radiotherapy, DNA and antigens, drug and gene delivery, in vitro evaluation ...
Muneerah Al Nuwairan, Basma Souayeh
doaj   +1 more source

Electrochemical Approach to Measure Physiological Fluid Flow Rates

Frontiers in Chemistry, 2021
In vivo measurement of the flow rate of physiological fluids such as the blood flow rate in the heart is vital in critically ill patients and for those undergoing surgical procedures.
Srivats Sarathy, Marco A. Nino, Abdulsattar H. Ghanim, Srinivasan Rajagopal, Syed Mubeen, M. L. Raghavan   +5 more
doaj   +1 more source

Endothelial Cell Targeting by cRGD-Functionalized Polymeric Nanoparticles under Static and Flow Conditions

Nanomaterials, 2020
Since αvβ3 integrin is a key component of angiogenesis in health and disease, Arg-Gly-Asp (RGD) peptide-functionalized nanocarriers have been investigated as vehicles for targeted delivery of drugs to the αvβ3 integrin-overexpressing neovasculature of ...
Lucía Martínez-Jothar, Arjan D. Barendrecht, Anko M. de Graaff, Sabrina Oliveira, Cornelus F. van Nostrum, Raymond M. Schiffelers, Wim E. Hennink, Marcel H. A. M. Fens   +7 more
doaj   +1 more source

Physiological non-Newtonian blood flow through single stenosed artery [PDF]

Theoretical and Applied Mechanics, 2016
A numerical simulation to investigate the Non-Newtonian modeling effects on physiological flows in a three dimensional idealized artery with a single stenosis of 85% severity is given. The wall vessel is considered to be rigid.
Mamun Khairuzzaman, Akhter Most. Nasrin, Ali Mohammad   +2 more
doaj   +1 more source

Physiologic Data-Driven Iterative Learning Control for Left Ventricular Assist Devices

Frontiers in Cardiovascular Medicine, 2022
Continuous flow ventricular assist devices (cfVADs) constitute a viable and increasingly used therapy for end-stage heart failure patients. However, they are still operating at a fixed-speed mode that precludes physiological cfVAD response and it is ...
Konstantinos Magkoutas, Philip Arm, Mirko Meboldt, Marianne Schmid Daners   +3 more
doaj   +1 more source