Flow in a torsionally oscillating filled cylinder

The flow of a liquid in a completely filled cylinder undergoing torsional oscillations about its longitudinal symmetry axis was studied analytically and experimentally. The objective of the studies was to determine the efficacy of the torsional oscillations in mixing the confined liquid. Flow was found to be confined primarily to toroidal cells at the ends of the cylinder. Cell thickness was about equal to the cylinder radius. The use of baffles at the end walls was shown to enhance the mixing process

Observed and Calculated Values of the Magnetic Intensity over a Major Geologic Structure

The authors compare the observed and calculated values of the vertical and horizontal components of the magnetic field along a profile across the Los Angles Basin. A structural geologic cross section compiled from seismic, gravity and geologic data was used as a basis for calculating the magnetic field. In the San Pedro Hills portion of the cross section the calculated and observed values disagree, indicating that the granitic basement rocks lie at greater depths then shown in the structure section

Mixing and Demixing Processes in Multiphase Flows With Application to Propulsion Systems

A workshop on transport processes in multiphase flow was held at the Marshall Space Flight Center on February 25 and 26, 1988. The program, abstracts and text of the presentations at this workshop are presented. The objective of the workshop was to enhance our understanding of mass, momentum, and energy transport processes in laminar and turbulent multiphase shear flows in combustion and propulsion environments

A technique to correct for sample thickness variations for use with IDAPS X-ray radiograph analysis

The Image Data Processing System (IDAPS) at the Marshall Space Flight Center is used to analyze radiographs of metal samples to qualitatively and quantitatively map compositional variations across the samples. When the X-ray radiographs are of samples having thickness variations, corrections must be made to accomplish compositional analysis. A correction technique is described for cylindrical samples and is applied to radiographs of SPAR Experiment 74-18. Uncorrected and corrected images are shown

Charged kaon condensation in high density quark matter

We show that at asymptotically high densities the ``color-flavor-locked + neutral kaon condensate'' phase of QCD develops a {\it charged} kaon condensate through the Coleman-Weinberg mechanism. At densities achievable in neutron stars a charged kaon condensate forms only for some (natural) values of the low energy constants describing the low-lying excitations of the ground state.Comment: 11 pages, 3 figures, new reference adde

Analysis of SPAR 8 single-axis levitation experiment

The melting and resolidification of SPAR 8 payload melting and resolidification of a glass specimen from the in a containerless condition and the retrieval and examination of the specimen from the. The absence of container contact was assured by use of a single-axis acoustic levitation system. However, the sample contacted a wire cage after being held without container contact by the acoustic field for only approximately 87 seconds. At this time, the sample was still molten and, therefore, flowed aroung the wire and continued to adhere to it. An analysis of why the sample did not remain levitated free of container contact is presented. The experiment is described, and experimental observations are discussed and analyzed

Leadership Role Expectations and Relationships of Principals and Pastors in Catholic Parochial Elementary Schools: Part I

Parish Elementary schools in the United States have a governance structure that often precipitates conflict. The principal is the designated leader of the school, the educational administrator, and the supervisor of the faculty and students. By canon law, however, the pastor of the parish remains ultimately responsible for the spiritual and temporal welfare of the entire parish.This review addresses the relationship of pastors and principals in parish schools. After a brief review of general governance in the Catholic Church, the review analyzes the roles of pastor and principal respectively, and concludes with some preliminary advice about role expectations