Results 91 to 100 of about 5,179,678 (338)

In vivo laser Doppler holography of the human retina

open access: yes, 2018
The eye offers a unique opportunity for non-invasive exploration of cardiovascular diseases. Optical angiography in the retina requires sensitive measurements, which hinders conventional full-field laser Doppler imaging schemes.
Atlan, M.   +4 more
core   +1 more source

Outflow boundary conditions for 3D simulations of non-periodic blood flow and pressure fields in deformable arteries [PDF]

open access: yes, 2010
The simulation of blood flow and pressure in arteries requires outflow boundary conditions that incorporate models of downstream domains. We previously described a coupled multidomain method to couple analytical models of the downstream domains with 3D ...
Figueroa, C. A.   +3 more
core   +5 more sources

A Soft Robotic Jellyfish with Decoupled Actuators for Agile 3D Locomotion

open access: yesAdvanced Intelligent Systems, EarlyView.
This study presents a soft robotic jellyfish featuring a functionally decoupled actuation architecture. By separating propulsion, steering, and vertical regulation into independent modules, the robot overcomes conventional coupled‐motion limitations. Utilizing a passive‐valve‐based differential drag strategy and lateral water jets, it achieves agile 3D
Zhuoheng Li   +6 more
wiley   +1 more source

Postoperative association between impaired renal function and vascular dysfunction in liver transplant recipients

open access: yes, 2022
Liver Transplantation, EarlyView.
Domenico A. Chavez   +8 more
wiley   +1 more source

An Interactive Data Acquisition and Control System Coupled on a Pulsatile Pipe Flow Test Rig

open access: yesMeasurement + Control, 2002
A test rig to be used for time-dependent static pressure and velocity distribution measurements in a pulsatile pipe flow with laminar, transitional and turbulent regimes was initially designed and constructed.
Mehmet Yaşar Gündoğdu   +1 more
doaj   +1 more source

Mathematical Analysis of Carreau Fluid Model for Blood Flow In Tapered Constricted Arteries [PDF]

open access: yes, 2017
The pulsatile blood flow in tapered asymmetrically constricted narrow artery is investigated, treating the blood as Carreau fluid model. The expressions obtained by Sankar (2016) for various flow quantities are used to analyze the flow in different ...
Lee, Usik   +3 more
core  

Transition to turbulence in pulsating pipe flow

open access: yes, 2017
Fluid flows in nature and applications are frequently subject to periodic velocity modulations. Surprisingly, even for the generic case of flow through a straight pipe, there is little consensus regarding the influence of pulsation on the transition ...
Hof, Björn   +4 more
core   +1 more source

Increased erythrocyte adhesion to VCAM-1 during pulsatile flow: Application of a microfluidic flow adhesion bioassay

open access: yesClinical Hemorheology and Microcirculation, 2015
Sickle cell disease (SCD) is characterized by microvascular occlusion mediated by adhesive interactions of sickle erythrocytes (SSRBCs) to the endothelium. Most in vitro flow adhesion assays measure SSRBC adhesion during continuous flow, although in vivo
J. White   +3 more
semanticscholar   +1 more source

Lymphatic Abnormalities in Noonan Syndrome Extend Beyond Clinically Apparent Disease

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Lymphatic disease represents a well‐described manifestation of Noonan syndrome (NS), yet the full phenotypic spectrum remains incompletely characterized, especially in asymptomatic individuals. We conducted a cross‐sectional study including 10 individuals with NS (four with peripheral lymphedema and six without) and 10 age‐ and sex‐matched ...
Inger Norlyk Sheyanth   +7 more
wiley   +1 more source

Performance evaluation of a pulsatile ventricular assist device under non physiologic pumping frequencies by means FEM and 2D approach [PDF]

open access: yes, 2017
A ventricular assist device (VAD) is a blood pump that works in parallel with heart. It is used as a mechanical assistance for patients that suffer cardiac insufficiency: as a therapy, as a bridge to transplant or to extend life.
Di Paolo, José, Fríes, Exequiel R.
core  

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