Two-phase flow through capillary channels is considerably different from two-phase flow through larger channels: viscous (μu/d) and interfacial (γ/d) stresses, both inversely proportional to the diameter, are more important than inertial (ρu) and gravitational (ρgH) stresses. A reasonable definition of the term capillary might be obtained by requiring the dominance of surface tension forces ove...

1. Neurovascular inflammation is impaired in patients suffering from diabetic neuropathy. The aim of our study was to evaluate the distribution of nutritive and total skin blood flow in diabetic patients with and without neuropathy after neurovascular stimulation with acetylcholine. 2. Twenty patients with Type I diabetes, 10 with and 10 without neuropathy, and 10 age-matched non-diabetic contr...

accurate permeability estimation has always been a concern in determining flow units, assigning appropriate capillary pressure andrelative permeability curves to reservoir rock types, geological modeling, and dynamic simulation.acoustic method can be used as analternative and effective tool for permeability determination. in this study, a four-step approach is proposed for permeability estimati...

This review elucidates the roles of capillary haemodynamics, nitric oxide (NO) and vascular endothelial growth factor (VEGF) in the remodelling of skeletal muscle microcirculation in response to increased (electrical stimulation) or decreased (chronic ischaemia) blood flow. During early stages of stimulation-induced angiogenesis, up-regulation of VEGF and its receptor VEGF receptor 2 is depende...

Modeling of interstitial fluid flow involves processes such as fluid diffusion, convective transport in extracellular matrix, and extravasation from blood vessels. To date, majority of microvascular flow modeling has been done at different levels and scales mostly on simple tumor shapes with their capillaries. However, with our proposed numerical model, more complex and realistic tumor shapes a...

In this study we consider the problem of the interface motion under the capillary–gravity and an external electric force. The infinitely deep fluid layer is assumed to be viscous, perfectly conducting and the flow to be incompressible. The weak viscous effects are introduced using the Helmholtz–Leray decomposition and the visco-potential flow approach. The electric charge distributions above an...

Residual gas saturation is one of the most important parameter in determining recovery factor of water-drive gas reservoir. Visual observation of processes occurring at the pore level in micromodels can give an insight to fluid displacements at the larger scale and also help the interpretation of production performance at reservoir scale. In this study experimental tests in a glass micromod...

Displacement of oil and water in porous media of reservoir rocks is described by relative                      permeability curves, which are important input data for reservoir performance simulation and drive mechanism studies. Many core studies, such as multiphase relative permeability, capillary pressure and saturation exponent determination, depend on the volume fractions of multiphase flui...

Objective Argon plasma coagulation (APC) and helium plasma coagulation (HPC) are electrosurgical techniques that provide noncontact monopolar electrothermal haemostasis. Although these techniques have been widely used clinically during the last three decades, their in vivo effects on liver tissue remain unclear. Methods We investigated the effects of different power levels (10-100 W) of APC and...

OBJECTIVE/HYPOTHESIS Age-associated muscular changes and fatigue have been shown to affect phonatory function. Reductions in blood flow with aging could translate to reductions in oxidative capacity within laryngeal muscles and increased fatigability. We tested the hypothesis that there would be increased capillary red blood cell (RBC) velocity and a reduction of capillary density in the thyroa...