The numerical solution of the Navier-Stokes equations for laminar incompressible flow past a paraboloid of revolution

A numerical method is presented for the solution of the Navier-Stokes equations for flow past a paraboloid of revolution. The flow field has been computed for a large range of Reynolds numbers. Results are presented for the skinfriction and the pressure together with their respective drag coefficients. The total drag has been checked by means of an application of the momentum theorem.

Process for making a noble metal on tin oxide catalyst

A quantity of reagent grade tin metal or compound, chloride-free, and high-surface-area silica spheres are placed in deionized water, followed by deaerating the mixture by boiling and adding an oxidizing agent, such as nitric acid. The nitric acid oxidizes the tin to metastannic acid which coats the spheres because the acid is absorbed on the substrate. The metastannic acid becomes tin oxide upon drying and calcining. The tin-oxide coated silica spheres are then placed in water and boiled. A chloride-free precious metal compound in aqueous solution is then added to the mixture containing the spheres, and the precious metal compound is reduced to a precious metal by use of a suitable reducing agent such as formic acid. Very beneficial results were obtained using the precious metal compound tetraammine platinum(II) hydroxide

The Cool Accretion Disk in ESO 243-49 HLX-1: Further Evidence of an Intermediate Mass Black Hole

With an inferred bolometric luminosity exceeding 10^42 erg/s, HLX-1 in ESO 243-49 is the most luminous of ultraluminous X-ray sources and provides one of the strongest cases for the existence of intermediate mass black holes. We obtain good fits to disk-dominated observations of the source with BHSPEC, a fully relativistic black hole accretion disk spectral model. Due to degeneracies in the model arising from the lack of independent constraints on inclination and black hole spin, there is a factor of 100 uncertainty in the best-fit black hole mass M. Nevertheless, spectral fitting of XMM-Newton observations provides robust lower and upper limits with 3000 Msun < M < 3 x 10^5 Msun, at 90% confidence, placing HLX-1 firmly in the intermediate-mass regime. The lower bound on M is entirely determined by matching the shape and peak energy of the thermal component in the spectrum. This bound is consistent with (but independent of) arguments based solely on the Eddington limit. Joint spectral modelling of the XMM-Newton data with more luminous Swift and Chandra observations increases the lower bound to 6000 Msun, but this tighter constraint is not independent of the Eddington limit. The upper bound on M is sensitive to the maximum allowed inclination i, and is reduced to M < 10^5 Msun if we limit i < 75 deg.Comment: 10 pages, 7 figures, accepted for publication in Ap

Home at Grasmere: A Conversation with Richard Wordsworth

A conversation between Judith Miller and Richard Wordsworth, an actor and descendant of William Wordsworth who came to Sacred Heart University in April 1988 to give a performance of his dramatic monologue, The Bliss of Solitude, based on the life of his ancestor. He speaks about his ancestors and his life today in the community of Grasmere. Lecture given at the Romanticism Past and Present Institute for secondary school faculty, sponsored by Sacred Heart University and the Connecticut Humanities Council. The writers of these essays had the specific task of selecting and presenting their material with secondary school faculty and their students in mind

A follow-up study of families referred from a child psychiatric clinic

Thesis (M.S.)--Boston Universit

Feeder Cattle Basis in South Carolina 2000-2004

Livestock Production/Industries,

Preface (Special Issue, The Greeks Institute)

The essays in this selection explore the roots of classicism in 5th century B.C. Greece. The articles are based on The Greeks Institute, a series of lectures presented to secondary school teachers in the Bridgeport Public Schools during the spring of 1989. Co-sponsored by the Connecticut Humanities Council, Sacred Heart University, and the Bridgeport Public Schools, the purpose of the institute has been to provide teachers with an interdisciplinary exploration of classical Greece for the purposes of professional enrichment and curriculum development. The institute will culminate with teachers and their students attending The Greeks, a lecture/performance presented by the Humanities Touring Group that brings the glories of classical Greece to life on the stage. The essays in this collection, drawn from the disciplines of art and architecture, history, literature and drama, philosophy, and religious studies, explore the origins, dominant manifestations, and influence of the Greek classical phenomenon

Your Lawn

PDF pages: 3

Hydrostatic pressure study of single-crystalline UNi0.5Sb2

We studied single-crystals of the antiferromagnetic compound UNi0.5Sb2 (TN ~ 161 K) by means of measurements of magnetic susceptibility (chi), specific heat (Cp), and electrical resistivity (rho) at ambient pressure, and resistivity under hydrostatic pressures up to 20 kbar, in the temperature range from 1.9 to 300 K. The thermal coefficient of the electrical resistivity (drho/dT) changes drastically from positive below TN to negative above, reflecting the loss of spin-disorder scattering in the ordered phase. Two small features in the rho vs T data centered near 40 and 85 K correlate well in temperature with features in the magnetic susceptibility and are consistent with other data in the literature. These features are quite hysteretic in temperature, i.e., the difference between the warming and cooling cycles are about 10 and 6 K, respectively. The effect of pressure is to raise TN at the approximate rate of 0.76 K/kbar, while progressively suppressing the amplitude of the small features in rho vs T at lower temperatures and increasing the thermal hysteresis.Comment: 9 pages, 3 figues, 2007-mmm conferenc