83,502 research outputs found
Shaw, P J, VX27329
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/416365Surname: SHAW. Given Name(s) or Initials: P J. Military Service Number or Last Known Location: VX27329. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 29060.238518
Item: [2016.0049.48626] "Shaw, P J, VX27329
Hele-Shaw Flow Near Cusp Singularities
No full textThis thesis discusses the radial version of the Hele-Shaw problem. Different from the channel version, traveling-wave solutions do not exist in this version. Under algebraic potentials, in the case that the droplets expand, in finite time, cusps will appear on the boundary and classical solutions may not exist afterwards. Physicists have suggested that for (2p+1,2)-cusps, that near cusp singularities of Hele-Shaw flow, after scaling X, Y by some powers of time t respectively, the main part of Y(X, t) is a one-parameter family and does not depend on time t. They have also suggested that the solutions of the Hele-Shaw problem are connected with dispersionless KdV (dKdV) hierarchy. In this study, we rigorously proved that this is the case for (3,2)-cusps when the droplets are simply connected and the external potentials are algebraic. We gave exact solutions and showed that the main parts of the exact solutions are some special solutions of the dispersionless string equation. More over, borrowed from the physical paper\cite{Teo} with a little more details, we showed the arguments of how these special solutions are related to dKdV hierarchy
The Saffman-Taylor problem for an extremely shear-thinning fluid
No full textWe consider a steady flow driven by pushing a finger of gas into a highly shear-thinning power-law fluid, with exponent n, in a Hele-Shaw channel. We formulate the problem in terms of the streamfunction , which satisfies the p-Laplacian equation (with ), and investigate travelling wave solutions in the large-n (extreme shear-thinning) limit. We take a Legendre transform of the free-boundary problem for , which reduces it to a linear problem on a fixed domain. The solution to this problem is found by using matched asymptotic expansions and the resulting shape of the finger deduced (being, to leading order, a semi-infinite strip). The nonlinear problem for the streamfunction is also treated using matched asymptotic expansion in the physical plane. The finger-width selection problem is briefly discussed in terms of our results. <br/
Hele-Shaw rheometry
No full textIn this paper, we describe a novel approach to determine the flow behavior index of a power-law fluid by means of a microfluidic device. The concept of this method is based on a mathematical analysis by Aronsson and Janfalk [Eur. J. Appl. Math. 3, 343–366 (1992)] of Hele-Shaw flow of power-law liquids. We implement this approach by driving a non-Newtonian fluid through a glass microfluidic chip with a 100:1 contraction. The flow in this chip satisfies the Hele-Shaw flow conditions in most of the device. Two conjugate p-Laplace equations describe the pressure and stream function in such flows. These equations depend on the flow behavior index, n. Therefore, by fitting the p-Laplace equation to the velocity field obtained from a micro particle image velocimetry measurement of the flow, the flow behavior index of the fluid in the chip can be determined. Because in practice, fluids rarely show perfectly inelastic power-law behavior, conditions under which the assumption of inelastic flow is valid were derived by analyzing Hele-Shaw flow of an Oldroyd-B fluid. The concept was tested using three different classes of model fluids, a Newtonian fluid, an inelastic power-law fluid, and a Boger fluid. In all three cases, satisfactory results were obtained, with values of n deviating at most 4% from values measured using conventional rheometry. The method presented here is expected to be potentially useful in online quality control in, for example, polymer or food processing.Process and EnergyMechanical, Maritime and Materials Engineerin
The effect of pH, dissolved humic substances, and ionic composition on the transfer of iron and phosphate to particulate size fractions in epilimnetic lake water.
No full textTransformations of dissolved iron and phosphate to particulate material (>0.2 \mu m) were investigated by adding ^55 FeCl_3, and ^32 PO_4^3- to pH adjusted epilimnetic lake water samples of contrasting ionic strengths and dissolved humic substances (DHS) concentrations. The distributions of these tracers between particulate size fractions in samples without appreciable DHS after 24 h of dark incubation varied markedly over the pH range 4-8. The effect of pH on the movement of ^55 Fe and ^32 P to particulate size fractions in clear-water samples depended on the ionic strength. Over the same pH range, the presence of DHS suppressed the movement of ^55 Fe and ^32 P to particulate size fractions. There was little difference between low and high ionic strength DHS-rich samples. The capability of DHS to maintain added ^55 Fe and ^32 P in solution (<0.2 \mu m) was confirmed by simultaneous measurements of precipitation losses.<br/
Shaw and Feminisms On Stage and Off
No full textWhen offstage actions contradict a playwright's onstage message, literary study gets messy. In his personal relationships, George Bernard Shaw was often ambivalent toward liberated women--surprisingly so, considering his reputation as one of the first champions of women's rights. His private attitudes sit uncomfortably beside his public philosophies that were so foundational to first-wave feminism. Here, Shaw's long-recognized influence on feminism is reexamined through the lens of twenty-first-century feminist thought as well as previously unpublished primary sources. New links appear between Shaw's writings and his gendered notions of physicality, pain, performance, nationalism, authorship, and politics. The book's archival material includes previously unpublished Shaw correspondence and excerpts from the works of his feminist playwright contemporaries. Shaw and Feminisms explores Shaw's strong female characters, his real-life involvement with women, and his continuing impact on theater and politics today.Cover -- Contents -- Foreword -- Acknowledgments -- Introduction -- PART I. THE WOMESN IN SHAW'S PLSYS -- 1. Shaw's Athletic-Minded Women -- 2. Shaw and Cruelty -- 3. Shutting Out Mother: Vivie Warren as the New Woman -- 4. The Politics of Shaw's Irish Women in John Bull's Other Island -- PATE II. SHAW'S RELATIONSHIP WITH WOMEN -- 5. Bernard Shaw and the Archbishop's Daughter -- 6. Writing Women: Shaw and Feminism behind the Scenes -- 7. Feminist Politics and the Two Irish "Georges": Egerton versus Shaw -- 8. The Passionate Anarchist and Her Idea Man -- PART III. SHAVLAN FEMINISM IN THE LARGER WORLD -- 9. Mrs Warren's Profession and the Development of Transnational Chinese Feminism -- 10. Shaw's Women in the World -- 11. The Energy behind the Anomaly: In Conversation with Jackie Maxwell -- Bibliography -- Contributors -- Index -- A -- B -- C -- D -- E -- F -- G -- H -- I -- J -- K -- L -- M -- N -- O -- P -- Q -- R -- S -- T -- V -- W -- X -- Y -- ZWhen offstage actions contradict a playwright's onstage message, literary study gets messy. In his personal relationships, George Bernard Shaw was often ambivalent toward liberated women--surprisingly so, considering his reputation as one of the first champions of women's rights. His private attitudes sit uncomfortably beside his public philosophies that were so foundational to first-wave feminism. Here, Shaw's long-recognized influence on feminism is reexamined through the lens of twenty-first-century feminist thought as well as previously unpublished primary sources. New links appear between Shaw's writings and his gendered notions of physicality, pain, performance, nationalism, authorship, and politics. The book's archival material includes previously unpublished Shaw correspondence and excerpts from the works of his feminist playwright contemporaries. Shaw and Feminisms explores Shaw's strong female characters, his real-life involvement with women, and his continuing impact on theater and politics today.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
Free boundary problems in a Hele-Shaw cell
No full textThe motion of a free boundary separating two immiscible fluids in an unbounded Hele-Shaw cell is considered. In the one-phase problem, a viscous fluid is separated from an inviscid fluid by a simple closed boundary. Preliminaries for a complex variable technique are presented by which the one-phase problem can be solved explicitly via conformal mappings. The Schwarz function of the boundary plays a major role giving rise to the so called Schwarz function equation which governs the evolution of exact solutions. The Schwarz function approach is used to study the stability of a translating elliptical bubble due to a uniform background flow, and the stability of a blob (or bubble) subject to an external electric field. The one-phase problem of a translating free boundary and of a free boundary subject to an external field are studied numerically. A boundary integral method is formulated in the complex plane by considering the Cauchy integral formula and the complex velocity of a fluid particle on the free boundary. In the case of a free boundary subject to an external electric field due to a point charge, it is demonstrated that a stable steady state is achieved for appropriate charge strength. The method is also employed to study breakup of a single translating bubble in which the Schwarz function singularities (shown to be stationary) of the initial boundary play an important role. The two-phase problem is also considered, where the free boundary now separates two viscous fluids, and the construction of exact solutions is studied. The one-phase numerical model is enhanced, where a boundary integral method is formulated to accommodate the variable pressure in both viscous phases. Some numerical experiments are presented with a comparison to analytical results, in particular for the case where the free boundary is driven by a uniform background flow
Joan of Arc in Shakespeare, twain and shaw
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Florianópolis, 1983
Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
No full textThe prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
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