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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 73 for “"Particle Number"”.
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Modeling Size-Resolved Particle Number Emissions From Advanced Technology And Alternative Fueled Vehicles In Real-Operating Conditions
Two particle number emission datasets were analyzed in detail. The first data set contained particle number emissions from four transit buses, including two hybrid diesel-electric buses, under a variety of driving conditions and technological/fuel treatments including: diesel oxidation catalysts, …
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Centrality dependence of two-particle number and transverse momentum correlations in 200 gev au+au collisions at rhic
<p>We present plots of the pattern of particle formation in $sqrt{s_{NN}}=200$ GeV Au+Au heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) using three different two-particle correlation measurements of number and transverse momentum as a function of relative azimuth, pseudorapidity …
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Examining mean-field approximations and Bogoliubov-de Gennes (BdG) equations for topological quantum computing - some considerations on the conceptual basis of Majorana zero modes in p+ip superconductors
… solutions to BdG equations. In this framework, particle number conservation is broken and non-interacting fermion Hamiltonian is used to describe physics of interest. We argue that these features in the current framework may make it insufficient for studying topological properties of MZM …
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ASSESSMENT OF THE RELATIONSHIP BETWEEN OUTDOOR AND INDOOR CONCENTRATIONS OF AIRBORNE PARTICULATES IN RESIDENTIAL BUILDINGS IN SINGAPORE
… comprehensive indoor, outdoor and personal particle characterization study was conducted in a non-smoking apartment for a period of 2 to 10 days during April, 2003 to May, 2003. Concurrent indoor, outdoor and personal particle number measurements were recorded using a handheld condensation …
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Impact of Road Proximity and other Determinants of Air Quality along Multi-Use Trails in the National Capital Region
… I collected pollutant concentrations of PM2.5, particle number, and black carbon using mobile monitoring on an e-bike. I identified five trail routes that run parallel to an interstate highway, principal arterial, and local roads for this study and collected pollutant concentrations during …
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An Experimental Study of Soot Formation in Dual Mode Laminar Wolfhard-Parker Flames
… with temperature using Thermocouple Particle Densitometry (TPD). Soot volume fraction, particle size and particle number density fields were measured using laser light scattering and extinction. Gas velocities were measured using Particle Imaging Velocimetry (PIV) on the non-premixed …
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Bauschinger effect in Nb and V microalloyed line pipe steels
… The dislocation density and (Ti,Nb,V,Cu)-rich particle diameter, volume fraction and number density were measured for as-rolled and annealed (30 min. at 400 \(^0\)C and 550 \(^0\)C) steels. The Bauschinger effect was measured during compression-tension testing for the same steel conditions. The …
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The application of low-cost sensors to monitor and characterise particulate matter air pollution
… networks have been established to record particle mass concentrations under fixed conditions. However, monitoring sites are sparsely distributed due to the expense, size and calibration requirements of regulatory-grade instruments. Very limited information is available on the particle …
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The effects of secondary air injection on particulate matter emissions
… temperature. A TSI Model 3934 Scanning Mobility Particle Sizer (SMPS) was used to measure particle emissions at various engine operating conditions and secondary air rates. PM reductions were observed for the engine conditions and SAI flow rates that were tested. The maximum particle number …
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Assessment of nanoparticle emission of polypropylene, polyester and epoxy nanocomposites during automated drilling process.
… exposure, or the impact of embedded nanoparticles in commercial composites when they are released during machining processes. In this thesis, four groups of nanocomposites are identified as being used within industry and having potentially-harmful nanoparticles - the nanocomposites …
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Improving the Dispersive Optical Model toward a Dispersive Self-energy Method
… state properties, such as the charge density, particle number, and the energy per particle. Comparison of these quantities with data suggests additional ways in which the dispersive optical model can be improved. For example, a better treatment of short-range correlations is needed, and …
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Numerical multiphysics modelling of Wick-Boiling in a crud with porosity variations to determine local Nickel Ferrite depositions within crud due to deep bed filtration
… performance, solute concentration levels and particle number density distribution are examined through a two-dimensional model. The multi-physics model is described by a coupled system of a thermal model, a momentum transfer model, a solute concentration transport model and a particle …
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Modeling person-to-person contaminant transport in enclosed environments
… models. In the aircraft cabin, the transient particle concentrations were measured at the breathing zones of each passenger. The experimental data were used for evaluating the transient particle models in this study. ^ When applying the CFD models, most of the existing studies assumed that the …
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Characterisation of Microphysical and Optical Properties of Atmospheric Aerosols in a High Arctic environment: Villum Research Station, NE Greenland
Atmospheric aerosols are solid or liquid phase particles which are suspended in ambient air. These particles have an impact on the climate through direct and indirect radiative forcing, and their measurement presents challenges in high latitude environments where concentrations may fall under the …
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Fabrication and characterization of advanced materials using laser metal deposition from elemental powder mixture
… elemental powder mixture, comparative close particle number for Ti, Al and V powder could easily get industry qualified Ti-6Al-4V components. The particle number for each element in powder blends has been proved to be a key factor for composition control in the final deposit part. The second …
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Existence and stability of solutions to the equations of fibre suspension flows
… the problem is wellposed provided that the particle number, a material constant, is less than a critical value. The work by Galdi and Reddy made of a model in which rotary diffusivity is a function of the flow. This thesis re-examines these issues in two different ways. First, the second law …
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Holographic view of non-relativistic physics
… symmetry along this direction corresponds to the particle number transformation. This solution can be embedded into string theory by performing a set of operations (known as the Null-Melvin twist) on AdS5 x S' solution of type IIB supergravity. This method also provides a way of finding a black …
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Statistical distributions in the thermal model
… use the thermal model to determine statistical particle number fluctuations in the presence of exact conservation laws. A basis is provided, which will be useful to extend the range of applications of the thermal model with both a large number of conserved charges as well as quantum statistics. …
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VEHICLES¿ NON-EXHAUST EMISSIONS: SETUP OF EXPERIMENTAL APPROACHES FOR ON-ROAD CHARACTERIZATION OF TIRE WEAR AND ROAD DUST PARTICLES
… particularly those from tire and road wear particles (TRWPs), have emerged as a dominant and under-investigated source of airborne particulate matter. TRWPs are mechanically generated, chemically complex, and highly variable, posing challenges for both environmental monitoring and regulatory …
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Solving sign problems with meron cluster algorithms : simulating field theories at non-zero chemical potential
… in the two models for, respectively, the particle number as a function of the chemical potential and magnetization as a function of the external field. These results are in agreement with corresponding analytic predictions.
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