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Showing 1 to 20 of 286 for “"Particle tracking"”.
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Charged-particle tracking for neutron-deuteron breakup
Particle tracking software has been developed to measure the energy of protons scattered in the breakup process d(n, np)n. The nd breakup experiment is performed at the Weapons Neutron Research facilities at Los Alamos Neutron Science Center. In order to fully define breakup kinematics for the …
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Four dimensional particle tracking in biological dynamic processes
Hiermit wird ein allgemeiner Annährungsversuch zur Bildanalyse in multidimensionalen Raum vorgelegt, der des run lenght encoding Prozesses und volume field methode sich bedient. Die Forschung über die volume field methode wurde durchgeführt, um die Grenzen der Methode nachzuprüfen und, um die …
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Three-dimensional particle tracking velocimetry for turbulence applications
Three-dimensional particle tracking velocimetry (3D-PTV) is a flow measure- ment technique that tracks the Lagrangian paths of a set of particles using photogrammetric principles. This technique allows to investigate complex fluid flows by measuring velocity and acceleration along particle …
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Multiple particle tracking in PEPT using Voronoi tessellations
… experimental data set, a custom multiple target tracking algorithm is used to associate identical tracers from frame to frame. Since there are no physical properties to distinguish the tracers from one another, the tracking algorithm uses velocity and position to extrapolate the locations of …
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3D particle tracking velocimetry using synthetic aperture imaging
… currently used to visualize flow fields, particle image velocimetry (PIV) offers great advantages because of the high resolution quantitative results it provides. The feasibility of using synthetic aperture (SA) imaging to conduct 3D Particle Image Velocimetry (PIV) has been previously …
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Robust three-dimensional particle tracking for small-scale dynamics
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Robust three-dimensional particle tracking for small-scale dynamics
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Three-Dimensional Single Particle Tracking on the Two -Photon Microscope
We have developed a 3D single-particle-tracking (SPT) system based around the two-photon laser-scanning fluorescence microscope that can track particles in all three dimensions and at a high frequency response. We have implemented two different techniques to achieve this goal. Both techniques …
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Lagrangian dynamics of turbulence: Applications with 3D particle tracking velocimetry
… for a distinct characterization of the motion of particles. It is particularly useful in the understanding of dispersion, mixing, and transport phenomena. Due to the complexity and difficulty in quantifying Lagrangian properties, experimental studies on turbulence-driven phenomena in the …
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Vision systems in agriculture – Lagrangian particle tracking and field robotics
… techniques in computer vision -- a Lagrangian particle tracking (LPT) system and a high-throughput phenotyping system. Both systems have important application in in agricultural engineering. Lagrangian particle tracking (LPT) enables investigation of turbulence in the Lagrangian reference frame …
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Advances in volumetric super-resolution microscopy and single-particle tracking
… of T cells. Chapter 6 applies SMLFM in a single-particle tracking modality to quantify the diffusive states of Golgi-localised proteins, RAB6 and ACBD3, and reports on a biophysical investigation into the effect of transmembrane domain length on protein secretion.
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Development of 18F radiochemistry for positron emission particle tracking (PEPT)
Positron emission particle tracking (PEPT) is a non-invasive tracer-based measurement technique used to obtain dynamic information about multiphase systems. The basis of the technique is to radiolabel a phase-representative tracer particle with a positron emitting radionuclide. Electron-positron …
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Multiple particle tracking to assess the microstructure of biological fluids
Tracking the Brownian motion of colloids was first used about a hundred years ago to demonstrate the molecular nature of matter. Today's colloidal scientists perform particle tracking experiments to assess the structural and mechanical properties of complex materials at a micron length scale. …
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Observing flow using fast neutron radiography and positron emission particle tracking
… neutron radiography (FNR) and positron emission particle tracking (PEPT). A new fast neutron imaging system was commissioned at The South African Nuclear Energy Corporation, Pretoria, as part of this study, although FNR measurements were ultimately performed at PhysikalischTechnische …
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Three-dimensional particle tracking velocimetry study of marine organism wake behavior
Three-dimensional particle tracking velocimetry (3D-PTV) is a flow measurement technique that tracks Lagrangian trajectories of passive tracer particles using stereoscopic imaging. The technique allows for detailed analysis of the velocities along particle trajectories in unsteady flows. The …
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Particle-Tracking Studies for Solids Motion in a Gas Fluidized Bed
… development of a technique, based on radioactive particle tracking, to study the solids motion in fluidized beds. The principle, design and fabrication of the facility are described in detail in this dissertation. Data reduction schemes are also presented.
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Sub-Millimetre Positron-Emission Particle Tracking Using a CdZnTe Semiconductor Array
The Positron Emission Particle Tracking (PEPT) technique has been in development in Cape Town since 2009, and typically allows the tracking of a 1 mm diameter positron-emitting source travelling at 1 m/s with precision around 1 mm at kHz rates. Conventionally, PEPT utilises large, high efficiency …
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Particle tracking for understanding the properties and dynamics of bacterial biofilms
… can reach a surface to which they adhere. Particle tracking is a technique in which probe particles are placed in a material and observed using microscopy. The observed trajectories can be analyzed in various ways, for example to determine physical properties and structure of the material …
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Simulation, design and construction of a gas electron multiplier for particle tracking
The biological effects of charged particles is of interest in particle therapy, radiation protection and space radiation science and known to be dependent on both absorbed dose and radiation quality or LET. Microdosimetry is a technique which uses a tissue equivalent gas to simulate microscopic …
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