A5074736312- Fire dynamics and safety research
- Evacuation and Crowd Dynamics
- Cerebrospinal fluid and hydrocephalus
- Fluid Dynamics and Vibration Analysis
- Combustion and Detonation Processes
- Wind and Air Flow Studies
- Fluid Dynamics and Heat Transfer
- Spinal Dysraphism and Malformations
- Atomic and Subatomic Physics Research
- Aerodynamics and Fluid Dynamics Research
- Fluid Dynamics and Turbulent Flows
- Advanced Neuroimaging Techniques and Applications
- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Fluid Dynamics and Mixing
- Fire Detection and Safety Systems
- Advanced MRI Techniques and Applications
- Fire effects on ecosystems
- Lattice Boltzmann Simulation Studies
- Risk and Safety Analysis
- Geothermal Energy Systems and Applications
- Fetal and Pediatric Neurological Disorders
- Fire effects on concrete materials
- Innovative Microfluidic and Catalytic Techniques Innovation
- Atmospheric aerosols and clouds
Universidad de Jaén
2015-2024
Instituto Andaluz de Ciencias de la Tierra
2023
Cambridge University Press
2011
Abstract. Field studies in polluted areas over the last decade have observed large formation of secondary organic aerosol (SOA) that is often poorly captured by models. The study SOA using ambient data confounded effects advection, vertical mixing, emissions, and variable degrees photochemical aging. An oxidation flow reactor (OFR) was deployed to real-time during California Research at Nexus Air Quality Climate Change (CalNex) campaign Pasadena, CA, 2010. A high-resolution mass spectrometer...
Abstract. Ambient pine forest air was oxidized by OH, O3, or NO3 radicals using an oxidation flow reactor (OFR) during the BEACHON-RoMBAS (Bio–hydro–atmosphere interactions of Energy, Aerosols, Carbon, H2O, Organics and Nitrogen – Rocky Mountain Biogenic Aerosol Study) campaign to study biogenic secondary organic aerosol (SOA) formation (OA) aging. A wide range equivalent atmospheric photochemical ages sampled, from hours up days (for O3 NO3) weeks OH). processed OFR typically sampled every...
Radionuclide scanning images published in Nature by Di Chiro 1964 showed a downward migration along the spinal canal of particle tracers injected brain ventricles while also showing an upward flow lumbar region canal. These observations, since then corroborated many radiological measurements, have been basis for hypothesis that there must be active circulation mechanism associated with transport cerebrospinal fluid (CSF) deep down into and subsequently returning portion back to cranial...
The monitoring of intracranial pressure (ICP) fluctuations, which is needed in the context a number neurological diseases, requires insertion sensors, an invasive procedure with considerable risk factors. Intracranial fluctuations drive wave-like pulsatile motion cerebrospinal fluid (CSF) along compliant spinal canal. Systematically derived simplified models relating ICP resulting CSF flow rate can be useful enabling indirect evaluations former from non-invasive magnetic resonance imaging...
We report the results of global mode analysis to characterize onset unsteadiness in a circular pipe flow through an axisymmetric sudden expansion inlet-to-outlet diameter ratio d/D=0.5. find that state becomes linearly unstable at significantly higher critical Reynolds number than one reported previous experimental works. This corresponds oscillatory bifurcation with wavenumber |m|=1 located end recirculation region.
<h3>BACKGROUND AND PURPOSE:</h3> Recent flow dynamics studies have shown that the eccentricity of spinal cord affects magnitude and characteristics slow bulk motion CSF in subarachnoid space, which is an important variable solute transport along canal. The goal this study was to investigate how anatomic differences among subjects affect flow. <h3>MATERIALS METHODS:</h3> T2-weighted images were obtained 4 repeated 1 subject after repositioning. velocity calculated from phase-contrast MR for 7...
Forced respirations reportedly have an effect on CSF movement in the spinal canal. We studied respiratory-related motion during normal respiration.Six healthy subjects breathed at their rate with a visual guide to ensure unchanging rhythm. Respiratory-gated phase-contrast MR flow images were acquired 5 selected axial planes along spine. At each level, we computed voxelwise canal, together associated stroke volume. From these data, periodic volume changes of segments. A phantom was used...
We study the aerodynamics of a blunt-based body with rear flexibly-hinged rigid flaps, subject to turbulent flow Reynolds number Re=12000, under aligned and cross conditions yaw angle β=0° β=4°. To that aim, different values equivalent torsional stiffness are considered, cover range reduced velocity U∗=(0,3.48] in water tank experiments. The effect angular deflection plates on drag near wake is analyzed, experimentally numerically. results show that, U∗ herein undergo an inwards...
This paper investigates the transport of drugs delivered by direct injection into cerebrospinal fluid (CSF) that fills intrathecal space surrounding spinal cord. Because small drug diffusivity, dispersion neutrally buoyant has been shown in previous work to rely mainly on mean Lagrangian flow associated with CSF oscillatory motion. Attention is given here effects buoyancy, arising when density differs from density. For typical differences found applications, Richardson number be order unity,...