Thesis (Ph.D.)--University of California, Irvine, 2008. / Adviser: Donald Dabdub. Includes bibliographical references.

Thesis (M.S.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains v, 90 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 78-80).

Thesis (Ph. D.)--Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution, 1987. / Funding was provided by the National Science Foundation under grant Number OCE 84-17106 ...

Inertial and interceptive .impaction of spherical particles on circular cylinders was investigated theoretically. The particles were considered to be suspended in a fluid moving steadily through a random array of parallel cylinders. Fluid flowfields around the cylinders were obtained by numerically solving the Navier-Stokes Equation subject to Kuwabara's zero vorticity boundary condition. These solutions were subsequently utilized in calculating particle trajectories and impaction efficiencies. The latter are presented as functions of Reynolds number (0.2 ≤ Rec ≤ 40), particle inertial parameter (0 ≤ P ≤ 1000), particle to cylinder size ratio (0.001 ≤ K ≤ 1.) and cylinder concentration (10 ̄⁴ ≤ c ≤ 0.111). The impaction efficiencies and critical inertial parameters differ significantly from earlier theoretical predictions. The discrepancies are primarily attributable to the inaccurate flowfield representations used by previous authors. The agreement between Subramanyam and Kuloor's experimental work and present theory is satisfactory. / Applied Science, Faculty of / Chemical and Biological Engineering, Department of / Graduate

No description available.

Thesis (PH.D.) -- Syracuse University, 2004. / Adviser: Stone, Sheldon. "Publication number AAT 3160384."

Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Over the past couple of decades interest in particle-stabilised emulsions or Pickering emulsions has greatly increased. When using particles as stabilisers, as opposed to surfactants, the interface becomes more rigid and this can lead to interesting physical properties. In addition, the resulting emulsions are found to be longer-lived garnering commercial interest. This thesis aims to explore the mechanical properties of some specific systems containing particle-stabilised interfaces. The main system investigated was the bicontinuous interfacially jammed emulsion gel or bijel. The bijel has two continuous interpenetrating liquid phases separated by a particle-stabilised interface. Therefore, the structure has a very large interface in a fairly small volume and the pore size is under the experimentalist's control giving it promise in a variety of applications, particularly those based on catalysis. The response of bijels stabilised by either spherical particles or anisotropic rod-shaped particles to centrifugal compression has been investigated in this thesis. It was found that, in both cases, the structure was distorted to create anisotropic particle-stabilised sheets orientated perpendicular to the force. The original method for fabricating bijels involves the arrested spinodal decomposition of partially miscible liquids. This method requires partially miscible liquid pairs and particles that are equally wetted by each phase. Due to these requirements, a new method for making bijels using mixing was developed by others and the bijel made by mixing has been tested with oscillatory rheology combined with imaging and squeeze flow experiments. It was found that at low strain the bijel displayed solid-like behaviour and the structure remained intact until well past the yielding point. In addition, two further systems were investigated. The first system was rod-shaped particle-stabilised emulsion droplets that stick together by particle bridging. Bridging is where one particle can stabilise two droplet interfaces, preventing coalescence and leading to droplet clusters. Particle bridging was found to occur regardless of shear rate, particle volume fraction and to some extent aspect ratio with these anisotropic rod-shaped particles. This behaviour is hypothesised to be a consequence of the charged nature of the silica surface above pH 2. The second system was large particle-stabilised water droplets that can sprout tubes by the partitioning of solute from a bath into the droplet. By using different solutes and mixtures of different alcohols, the key requirements for sprouting behaviour have been ascertained. The most important requirement was found to be achieving the correct balance between the interfacial tension and the amount of solute partitioning into the droplet.

The production of the neutral strange particles Λ, Λ[bar] and K⁰_s at HERA has been studied with the ZEUS detector, using an integrated luminosity of 121pb^-1 . Differential cross-sections are measured in a High Q² DIS sample (Q² ≥ 25GeV²), a Low Q² DIS sample (5 ≤ Q² ≤ 25GeV² ) and a photoproduction sample. The photoproduction sample has Q² <= 1GeV² and at least two jets that satisfy E_T^jet > 5GeV and |η^jet| < 2.4. Cross-sections are measured as a function of the particle P_T and η, and additionally as a function of the event Q² and x in the DIS samples, and as a function of x_γ in the photoproduction sample. The DIS cross-sections are compared to the ARIADNE Monte Carlo, which broadly describes the data. The photoproduction cross-sections are compared to PYTHIA, where the agreement is less good, particularly at low x_γ. The baryon-antibaryon asymmetry, defined as (Λ-Λ[bar])/(Λ+Λ[bar]), is measured and always found to be consistent with zero, indicating little transfer of the Baryon Number from the beam proton to the Λ system in the detector region. The polarization of Λ and Λ[bar] is measured and also found to be always consistent with zero, indicating that there is no preferred frame in Λ production. The baryon-meson ratio (Λ + Λ[bar])/K⁰_s is studied, and is found to generally agree with ARIADNE in DIS, but give an excess over PYTHIA in photoproduction. The excess is particularly prominent at low x_γ in events with no clear jet structure. This is interpreted as hadron production in this region depending on a more-than-one-dimensional overlap of quark wave functions. An excess of strangeness in this region at low x_γ with no high E_T jets would be significant. It is investigated by taking the ratio of strange particles to charged tracks but no excess is seen.

Thesis (Ph.D.)--University of California, Berkeley, 1963. / "UC-34 Physics" -t.p. "TID-4500 (19th Ed.)" -t.p. Includes bibliographical references (p. 35-37).