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Miniature of Application of the Landau-Zener Model and Fermi's Golden Rule to Estimate Triplet Quantum Yield for Organic Molecules
Application of the Landau-Zener Model and Fermi's Golden Rule to Estimate Triplet Quantum Yield for Organic Molecules
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      Date: 2014-05-01

      Creator: Nathan D Ricke

      Access: Access restricted to the Bowdoin Community



        Report of the President, Bowdoin College 1943-1944

        Date: 1944-01-01

        Access: Open access



        Report of the President, Bowdoin College 1942-1943

        Date: 1943-01-01

        Access: Open access



        Nontranscribed spacer sequences promote in vitro transcription of Drosophila ribosomal DNA

        Date: 1982-11-11

        Creator: Bruce D. Kohorn, Peter M.m. Rae

        Access: Open access

        Tandem repeats of ribosomal RNA transcription units in Drosophila melanogaster are separated by a nontranscribed spacer that is comprised in part of serial repeats of a 0.24 kb sequence. DNA sequence analysis shows that such repeats are imperfect copies of a region that includes the site of in vivo rRNA transcription initiation (ca. -240 to +30). Subclones of the rDNA spacer that are copies of the sequence extending from -34 through the initiation site support detectable in vitro transcription in a mixture involving a Drosophila cell-free extract, but accurate in vitro transcription is considerably enhanced when a nontranscribed spacer template includes a copy of the sequence extending upstream of -34. From a comparison of the sequence and transcription template-effectiveness of various rDNA subclones, we infer that a major promoter of RNA polymerase I activity lies between -150 and -30 in the rDNA nontranscribed spacer. The nontranscribed spacer copies of the initiation region are less effective templates for transcription than is the region of in vivo initiation and there are differences between spacer repeates and the authentic sequence downstream of -240 that may account for this. © 1982 IRL Press Limited.


        Report of the President, Bowdoin College 1946-1947

        Date: 1947-01-01

        Access: Open access



        Balancing Survival and Extinction in Nonautonomous Competitive Lotka-Volterra Systems

        Date: 1995-06-01

        Creator: F. Montes de Oca, M. L. Zeeman

        Access: Open access

        We generalise and unify some recent results about extinction in nth-order nonautonomous competitive Lotka-Volterra systems. For each r ≤ n, we show that if the coefficients are continuous, bounded by strictly positive constants, and satisfy certain inequalities, then any solution with strictly positive initial values has the property that n - r of its components vanish, whilst the remaining r components asymptotically approach a canonical solution of an r-dimensional restricted system. In other words, r of the species being modeled survive whilst the remaining n - r are driven to extinction. © 1995 Academic Press, Inc.


        Bowdoin College - Medical School of Maine Catalogue (1915-1916)

        Date: 1916-01-01

        Access: Open access

        Bowdoin College Bulletin no. 61


        Miniature of Rehab, Restitution, or Reform? Drug Policy, Race, and Swing Voters in Ohio Politics, 1983-2015
        Rehab, Restitution, or Reform? Drug Policy, Race, and Swing Voters in Ohio Politics, 1983-2015
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            Date: 2020-01-01

            Creator: Grace Louise Cawdrey

            Access: Access restricted to the Bowdoin Community



              Miniature of Metabolic Inhibitors Induce Species-Specific Defects in Bacterial Glycosylation
              Metabolic Inhibitors Induce Species-Specific Defects in Bacterial Glycosylation
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                  Date: 2020-01-01

                  Creator: Ilana R. Olin

                  Access: Access restricted to the Bowdoin Community



                    Free limits of Thompson's group F

                    Date: 2011-12-01

                    Creator: Azer Akhmedov, Melanie Stein, Jennifer Taback

                    Access: Open access

                    We produce a sequence of markings Sk of Thompson's group F within the space Gn of all marked n-generator groups so that the sequence (F, Sk) converges to the free group on n generators, for n ≥ 3. In addition, we give presentations for the limits of some other natural (convergent) sequences of markings to consider on F within G3, including (F, {x0, x1, xn}) and (F, {x0, x1, x0n}) © 2011 Springer Science+Business Media B.V.