199,290 research outputs found

    The Mayhew-Hite Report: Volume 3, Issue 3 (2004-2005)

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    Created by the Ohio State Journal on Dispute Resolution at the Moritz College of Law at The Ohio State University for the Alternative Dispute Resolution Community and made possible by a deferred gift from Harold E. and Betty W. Hite in honor of Kimberly Hite Mayhew

    Henry Mayhew

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    To what extent are the retinal capillaries ensheathed by Muller cells? A stereological study in the tree shrew Tupaia belangeri

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    The cellular ensheathment of capillaries in the 3 outer capillary layers of the central retina of the adult tree shrew Tupaia belangeri was studied quantitatively by transmission electron microscopy. Using a stereological approach, the relative surface of capillary basal lamina ensheathed by Muller cells and by nonmacroglial cells (collectively termed non-Muller cells) was estimated in 5 animals. The participation of Muller cells was distinctly different in the 3 capillary layers studied. In the outermost capillary layer 1, the mean (standard deviation) percentage surface coverage by non-Muller cell processes was 46.8 (15.3)%. Much less of the capillary basal lamina was ensheathed by non-Muller cells in capillary layers 2 and 3 (3.0 (2.1)% and 0.3 (0.3)% respectively). The observed total variation of the stereological estimates for the surface fraction of Muller cells (expressed as the between-subject coefficient of variation) was significantly higher in capillary layer 1 (28.8%) compared with capillary layers 2 (2.2%) and 3 (0.3%). In capillary layer 1, the high observed total variation was due to a high biological variation among animals for the fractions of both Muller cell and non-Muller cell ensheathment. The rare occurrence of direct contacts between the capillary basal lamina and the perikarya of either microglial cells (capillary layer 3) or amacrine cells (capillary layer 2) corresponded well to the low stereological values obtained for the relative capillary surface ensheathed by non-Muller cells in these capillary layers. Previously, extensive and frequent contacts between the basal lamina of capillaries belonging to capillary layer 1 and horizontal cells had been observed in single sections. The present study quantitatively demonstrates a marked paucity of macroglial investment of capillaries located in capillary layer 1 of Tupaia. It can be concluded that horizontal cells ensheath most of the capillary surface not invested by Muller cells

    The Mayhew-Hite Report: Volume 3, Issue 2 (2004-2005)

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    Created by the Ohio State Journal on Dispute Resolution at the Moritz College of Law at The Ohio State University for the Alternative Dispute Resolution Community and made possible by a deferred gift from Harold E. and Betty W. Hite in honor of Kimberly Hite Mayhew

    A chain theorem for internally 4-connected binary matroids

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    This is the post-print version of the Article - Copyright @ 2011 ElsevierLet M be a matroid. When M is 3-connected, Tutte’s Wheels-and-Whirls Theorem proves that M has a 3-connected proper minor N with |E(M) − E(N)| = 1 unless M is a wheel or a whirl. This paper establishes a corresponding result for internally 4-connected binary matroids. In particular, we prove that if M is such a matroid, then M has an internally 4-connected proper minor N with |E(M) − E(N)| at most 3 unless M or its dual is the cycle matroid of a planar or Möbius quartic ladder, or a 16-element variant of such a planar ladder.This study was partially supported by the National Security Agency

    Law and democracy in an interdependent world

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    A consideration of the implications for law and democracy of changes in international relations and communications in the 1990s.Text of the inaugural lecture given by the Rt Hon Sir Patrick Mayhew, QC, MP as H M Attorney General to the Friends of the Institute of Advanced Legal Studies on Saturday 19th May 1990. Originally published in the Bulletin / Institute of Advanced Legal Studies. University of Londo

    The Mayhew-Hite Report: Volume 8, Issue 2 (2010)

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    Created by the Ohio State Journal on Dispute Resolution at the Moritz College of Law at The Ohio State University for the Alternative Dispute Resolution Community and made possible by a deferred gift from Harold E. and Betty W. Hite in honor of Kimberly Hite Mayhew

    Internally 4-connected binary matroids with cyclically sequential orderings

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    We characterize all internally 4-connected binary matroids M with the property that the ground set of M can be ordered (e0,…,en−1) in such a way that {ei,…,ei+t} is 4-separating for all 0≤i,t≤n−1 (all subscripts are read modulo n). We prove that in this case either n≤7 or, up to duality, M is isomorphic to the polygon matroid of a cubic or quartic planar ladder, the polygon matroid of a cubic or quartic Möbius ladder, a particular single-element extension of a wheel, or a particular single-element extension of the bond matroid of a cubic ladder

    Diet Coding Table

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    Includes dietary coding and tip names linking to Rainford, J. L., M. Hofreiter, D. B. Nicholson, and P. J. Mayhew. 2014. Phylogenetic Distribution of Extant Richness Suggests Metamorphosis Is a Key Innovation Driving Diversification in Insects. PLoS ONE 9:e109085. [Phylogeny used for analysis
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