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The Snap Ii Power Conversion System Topical Report No. 12. Boiler Development

Description: The SNAP II boilers which were designed are summarized. As shown by test results from the three boilers which were tested, a continuous progress in design was achieved. These designs were based on test data from both the SNAP I and SNAP II programs. As the quantity of data increased, physical models describing the heat transfer process were developed. These physical models provide the necessary correlation parameters which permit the extension of existing data to advanced design. Preliminary test sections were designed on the assumption that an allvapor nmodel which ignores the presence of the liquid phase during forced convection boiling could be used to describe the process quantitatively. The conventional Dittus-Boelter equation was applied with the increase in the vapor flow along the tube being ascribed to liquid evaporation. The assumption led to a design that fell short by about an order of magnitude since the exit qualities were only in the range of 10%, far less than required for complete vaporization. As a result, a revision in the concept of the mechanics of boiling was found necessary and a theoretical analysis was formulated, based on a dry wall'' or dropwise'' type boiling phenomenon. The test results of the preliminary test sections and the SNAP I boiler were plotted on the basis of dry-wall boiling parameters containing the area mean temperature difference and mass velocity. A conservative design curve was established and used to design the thirteen tube boiler. The design was found by test to be conservative, and the measured performance and the degree of conservatism were found to be within the expected spread in earlier test data. Dropwise boiling pictures the heat transfer as occurring directly from the wall to the drop through a film created by the vapor being ejected from the underside of the drop. …
Date: July 17, 1961
Creator: Gido, R. G.; Koestel, A.; Haller, H. C.; Huber, D. D. & Deibel, D. L.
Partner: UNT Libraries Government Documents Department
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New Solutions of the Boltzmann Equation for Monoenergetic Neutron Transport in Spherical Geometry

Description: Solutions of the Boltzmann equation for monoenergetic neutron transport in spherical geometry are derived which are respectively singular and regular at the center of the sphere. A few specific partial singular solutions are presented. The regular solutions in spherical geometry are constructed by superposition of solutions in plane geometry which belong to the same k. Finally, the solutions are compared with their representations by a series of spherical harmonics. (D. L.C.)
Date: November 17, 1961
Creator: Kofink, W.
Partner: UNT Libraries Government Documents Department
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NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

Description: The primary objective of the project is to examine the relations between the catalytic and magnetic properties of the copper-cobalt higher alcohol synthesis catalysts. We have undertaken to investigate the magnetic character by studying the Nuclear Quadrupole resonance of copper and (Zerofield) Nuclear Magnetic Resonance of cobalt in copper cobalt catalysts.
Date: December 17, 1991
Partner: UNT Libraries Government Documents Department
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Analytical Chemistry of the Polyphosphates

Description: Additional data were obtained on the separation of linear polymers from cyclic polymers by precipitation with barium chloride. An unexpected peak was observed in the anion-exchange chromatography of a sodium poly-phosphate of n-bar average degree of polymerization) = 6, and the compound represented by this peak was isolated. An end-group titration of this compound by microtechnique proved unequivocally that it is a cyclic phosphate. Although the identification (number of phosphorus atoms per molecule) is not completed, evidence from its position in the elution graph by ion-exchange chromatography' and from paper chromatography indicate that it is probable pentametaphosphate, Na/sub 5/P/sub 5/O/sub 15/, or the boat form of tetrametaphosphate, Na/sub 4/P/sub 4/O/sub 12/. (P.C.H.)
Date: October 17, 1961
Creator: Rieman, W., III & Rothbart, H. L.
Partner: UNT Libraries Government Documents Department
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AN IBM 7090 FORTRAN PROGRAM FOR ASME UNFIRED PRESSURE VESSEL DESIGN AND PRELIMINARY COST ESTIMATION

Description: An IBM 7090 FORTRAN program was written for the preliminary design and cost estimation of unfired pressure vessels with or without a jacket. Both vessel and jacket designs conform to the 1959 ASME Boiler and Pressure Vessel Code, Section VIII, Unfired Pressure Vessels. Vessels and jackets from 5 in. pipe through 84 in. o.d. and 1/4 in. through 1 1/2 in. in metal thickness may be designed by this program as written. Total vessel cost is the sum of metal and fabrication costs, each on a weight basis. (auth)
Date: October 17, 1962
Creator: Prince, C. E. & Milford, R. P.
Partner: UNT Libraries Government Documents Department

[Matt Ruen at LPF Conference]

Description: Photograph of Matt Ruen, Scholarly Communications Outreach Coordinator, Grand Valley State University. Ruen is speaking at the Library Publishing Forum 2016 Conference. The theme of the conference was Amplifying Scholarship: More Choices, More Voices.
Date: 2016-03-17/2016-03-19
Creator: Clark, Junebug
Partner: UNT Libraries Special Collections

[Pamela Andrews, Allyson Rodriguez, Sian Brannon at LPF Conference]

Description: Photograph of (L-R) Pamela Andrews, Repository Librarian, University Libraries Digital Curation Unit. Allyson Rodriguez, Electronic Resources Librarian, University Libraries Collection Development , and Sian Brannon, Associate Dean for Collection Management, University Libraries Collection Management. They're attending a power point lecture, at the Library Publishing Forum 2016 Conference. The theme of the conference was Amplifying Scholarship: More Choices, More Voices.
Date: 2016-03-17/2016-03-19
Creator: Clark, Junebug
Partner: UNT Libraries Special Collections

[Sarah Lippincott Speaking at LPF Conference]

Description: Photograph of Sarah Lippincott, Independent Scholarly Communication and Digital Scholarship Consultant at University of North Carolina at Chapel Hill, attending the Library Publishing Forum 2016 Conference. The theme of the conference was Amplifying Scholarship: More Choices, More Voices.
Date: 2016-03-17/2016-03-19
Creator: Clark, Junebug
Partner: UNT Libraries Special Collections

[UNT staff member hangs signs to direct students]

Description: Photograph of a member of the UNT staff standing on top of a ladder and hanging up signs to indicate to students where they need to stand. The sign in his hand says "Journalism 2628-2682" and the one already on the line says "Journalism 2683-2736". On the floor are roped off sections and Bachelor's students are standing around them.
Date: December 17, 2016
Creator: Clark, Junebug
Partner: UNT Libraries Special Collections

[Library Publishing Forum Conference Attendees]

Description: Photograph of (L - R) Amy Filiatreau, Director of the Library at Lynn University. Jordan Chussler, Academic Editor at Lynn University. Karen Bjork, Head of Digital Initiatives at Portland State University. Marilyn Billings, Communication & Special Initiatives Librarian at the University of Massachusetts Amherst. Allison Brown and Kate Pitcher, Director of the Library, Archives, and Media Center at St. Mary’s College of Maryland. They're given a presentation at the Library Publishing Forum 2016 Conference. The theme of the conference was Amplifying Scholarship: More Choices, More Voices.
Date: 2016-03-17/2016-03-19
Creator: Clark, Junebug
Partner: UNT Libraries Special Collections

[Katherine Skinner on her laptop]

Description: Photograph of Katherine Skinner, Author and Executive Director of the Educopia Institute. Skinner is attending the Library Publishing Forum 2016 Conference, where she was photographed using her laptop. The theme of the conference was Amplifying Scholarship: More Choices, More Voices.
Date: 2016-03-17/2016-03-19
Creator: Clark, Junebug
Partner: UNT Libraries Special Collections

[UNT Provost Finley Graves on the stage during the Bachelor's Commencement ceremony]

Description: Photograph of the University of North Texas Provost Finley Graves standing at a podium on the stage during the Bachelor's Commencement ceremony. He appears to be preparing to give a speech, there are papers on the podium in front of him.
Date: December 17, 2016
Creator: Clark, Junebug
Partner: UNT Libraries Special Collections

[Sarah Lynn Fisher Giving Digital Newspaper Lab Tour]

Description: Photograph of Sarah Lynn Fisher, (center front) giving a tour of the Digital Newspaper Unit to (L-R) Kelly Visnak, UTA's Associate University Librarian. Marcia Stockham, Associate Dean and Professor at Kansas State University. Annie K. Johnson, Library Publishing and Scholarly Communications Specialist at Temple University. An unidentified woman in a red striped shirt standing next to Jody Bailey, Director of Publishing at UTA's Library. They're all attending the Library Publishing Forum 2016 Conference.
Date: 2016-03-17/2016-03-19
Creator: Clark, Junebug
Partner: UNT Libraries Special Collections
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