28 research outputs found
The Treasured Hunt: Collecting Medieval and Renaissance Manuscripts, Past, Present, and Future
Welcome and Opening Remarks: E. Ann Matter, University of Pennsylvania, and Lynn Ransom, Free Library of Philadelphia
Session 1. Beginnings: Collecting in the Middle Ages and Renaissance
Session Chair: Emily Steiner, Department of English, University of Pennsylvania
Claire Richter Sherman, Center for Advanced Study in the Visual Arts at the National Gallery of Art, The Manuscript Collection of King Charles V of France: The Personal and the Political
David Rundle, History Faculty and Corpus Christi College, Oxford University, The Butcher of England and the Renaissance Arts of Book-Collecting
Session 2: Civic Service: The Legacies of Philadelphia-Area Collectors
Chair: Peter Stallybrass, Department of English, University of Pennsylvania
James Tanis, Director of Libraries and Professor of History Emeritus, Bryn Mawr College, Migrating Manuscripts
Derick Dreher, Director, The Rosenbach Museum & Library, Of Private Collectors and Public Libraries: Dr. A. S. W. Rosenbach and John Frederick Lewis
Session 3: Keynote address
Welcome: H. Carton Rogers, Vice Provost & Director of Libraries, University of Pennsylvania
Chair: Robert Maxwell, Department of the History of Art, University of Pennsylvania
Christopher de Hamel, Gaylord Donnelley Fellow Librarian, Corpus Christi College, Cambridge University, The Manuscript Collection of C. L. Ricketts (1859-1941)
Session 4: The Hunters and the Hunted: A Roundtable Discussion with Private and Institutional Collectors
Chair: David Wallace, Department of English, University of Pennsylvania
Moderator: Richard Linenthal, Bernard Quaritch Ltd.
Panelists:
Lawrence J. Schoenberg, Private Collector
Gifford Combs, Private Collector
Toshiyuki Takamiya, Private Collector, Keio University
Consuelo Dutschke, Curator of Medieval and Renaissance Manuscripts, Columbia University
William Noel, Curator of Manuscripts and Rare Books, The Walters Art Museu
Orthogonalities and functional equations
In this survey we show how various notions of orthogonality appear in the theory of functional equations. After introducing some orthogonality relations, we give examples of functional equations postulated for orthogonal vectors only. We show their solutions as well as some applications. Then we discuss the problem of stability of some of them considering various aspects of the problem. In the sequel, we mention the orthogonality equation and the problem of preserving orthogonality. Last, but not least, in addition to presenting results, we state some open problems concerning these topics. Taking into account the big amount of results concerning functional equations postulated for orthogonal vectors which have appeared in the literature during the last decades, we restrict ourselves to the most classical equations
Disrupting Circadian Homeostasis of Sympathetic Signaling Promotes Tumor Development in Mice
and why disruption of circadian rhythm may lead to tumorigenesis. oncogenic potential, leading to tumor development in the same organ systems in wild-type and circadian gene-mutant mice. is a clock-controlled physiological function. The central circadian clock paces extracellular mitogenic signals that drive peripheral clock-controlled expression of key cell cycle and tumor suppressor genes to generate a circadian rhythm in cell proliferation. Frequent disruption of circadian rhythm is an important tumor promoting factor
Liver lipid peroxidation and antioxidant capacity in cerulein-induced acute pancreatitis
Robust estimation of bacterial cell count from optical density
Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data