2,170 research outputs found
Does OO sync with the way we think?
No full textGiven that corrective-maintenance costs already dominate the software life cycle and look set to increase significantly, reliability in the form of reducing such costs should be the most important software improvement goal. Yet the results are not promising when we review recent corrective-maintenance data for big systems in general and for OO in particular-possibly because of mismatches between the OO paradigm and how we think
[Letter from Representative Hatton W. Sumners to T. N. Carswell - December 11, 1941]
No full textA letter written to Mr. T. N. Carswell, Parramore Post No. 57, American Legion, Abilene, Texas, from Hatton W. Sumners, House of Representatives, Washington, D. C., dated December 11, 1941. Hatton W. Sumners defines Americanism and handwrites in a postscript, "Am sending another address also.
Photochemical oxidation of dimethylsulphide to dimethylsulphoxide in estuarine and coastal waters
No full textDimethylsulphide (DMS) photo-oxidation and dimethylsulphoxide (DMSO) photoproduction were estimated in 26 laboratory irradiations of coastal samples from NE England (Tyne estuary) and W Scotland (Loch Linnhe and River Nant at Taynuilt). Pseudo-first order rate constants of DMS photo-oxidation (0.038 h−1 to 0.345 h−1) and DMSO photo-production (0.017 h−1 to 0.283 h−1) varied by one order of magnitude and were lowest in the coastal North Sea. Estuarine samples (salinity S 30) to be most reactive with respect to DMS photo-oxidation. Estimates of water column averaged DMS photo-oxidation rate constants, obtained by scaling to mean daily irradiance (July, NE England) and mid-UV underwater irradiance, were 0.012 d−1, 0.019 d−1, and 0.017 d−1 for upper estuary (S 30), at the lower end of previous observations. Comparing our water column averaged DMS photo-oxidation rate constants with estimated DMS losses via air-sea gas exchange and previously reported biological consumption implies that DMS photochemical removal is of only minor importance in our study area
Was John Hatton's Widow Ann His Only Wife?
No full textThe article corrects two often repeated errors about John Hatton (d. 1815, Baltimore County, Maryland). One states that his widow Ann was the mother of all of his children. The other states that his birth year was c. 1743.
After identifying John Hatton's widow as Ann Holland, the article presents evidence that they married in 1793 or later. All but one of his children had a mother other than Ann.
Indirect evidence pertinent to John's birth year is discussed. The range of possible years is narrowed to 1752-60. Support for estimating his birth year as c. 1756 concludes the article
[Night letter from T. N. Carswell to Representative Hatton W. Sumners - October 27, 1942]
No full textA letter written to Honorable Hatton W. Sumners, House of Representatives, Washington, D. C., from T. N. Carswell, Chairman from T. N. Carswell, Chairman, dated October 27, 1942. Carswell issues an invitation to Sumners from the American Legion to visit Abilene and speak to a "great gathering of West Texans" for an Armistice Day program that is in the making
Real-space imaging of confined magnetic skyrmion tubes
No full textThis repository contains the scripts and notebooks to reproduce the figures, simulations and numerical data shown in Real-space Imaging of Confined Magnetic Skyrmion Tubes by M. T. Birch, D. Cortés-Ortuño, L. A. Turnbull, M. N. Wilson, F. Groß, N. Träger, A. Laurenson, N. Bukin, S. H. Moody, M. Weigand, G. Schütz, H. Popescu, R. Fan, P. Steadman, J. A. T. Verezhak, G. Balakrishnan, J. C. Loudon, A. C. Twitchett-Harrison, O. Hovorka, H. Fangohr, F. Ogrin, J. Gräfe and P. D. Hatton.
Both simulation and experimental data analysis are performed using Python with the Matplotlib, Jupyter, Scipy, Numpy and h5py libraries.
Jupyter notebooks are provided to process the experimental data and reproduce the STXM, X-Ray Holography and LTEM images, which are shown as Figures 3, 4 and 5 in the paper.
Simulation scripts are based on the finite difference micromagnetic code OOMMF with the extension to simulate DMI for materials with symmetry class T: [oommf-extension-dmi-t](https://github.com/joommf/oommf-extension-dmi-t)
The analysis of OOMMF's output files, which are in the `OMF` format, are processed using the [OOMMFPy](https://github.com/davidcortesortuno/oommfpy) library, which can calculate the topological charge in a 2D slice.
Three-dimensional visualisations of the magnetic states are performed using Paraview. In order to get VTK files for visualisation, convert the `OMF` files into `.vtk` using the `OOMMFPy` library.
Latest version of this Data Set can be found at the Github repository:
https://github.com/davidcortesortuno/paper-2020_real-space_imaging_of_confined_magnetic_skyrmion_tubes</p
Synthesis of non glycosidic nucleobase-sugar mimetics
No full textBiologically active organic molecules acting as nucleoside mimics are frequently encountered in pharmaceutical research. They are either synthetic heterocycles, which miss the sugar-derived interactions with the active site of the nucleoside-binding protein, or natural products containing a glycosidic linkage, which may cause bioavailability and metabolic stability problems. We report here the concept of synthetic full nucleoside mimics, including both a N-containing nucleobase-like portion and a sugar-like moiety, where the latter consists of 5- and 6-membered carbacycles connected by a more stable and drug-like C-N bond to the nucleobase mimic. Compounds 14,16 (indolinones), 21 and 23 (benzimidazolones) have been prepared as model compounds. (C) 2009 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved
Simon the cellarer : song /
No full textC. 203 (Publisher number). Popular edition with tonic sol-fa and music lesson.In D. For baritone voice and piano. Includes tonic sol-fa notation.; Cover title.; Includes performance notes inside front cover.; Plate number: C. 203.; National Library of Australia's copy signed and stamped by former owner, J. Torpy. Tears have been reinforced with paper by former owner. ANL; Also available online http://nla.gov.au/nla.mus-vn6815944
Oxford, Bodelian Library, Hatton 116 (5136): Ælfric, from "Catholic Homilies" I, other Homilies, "Life of St. Chad"
No full text386. Oxford, Bodleian Library, Hatton 116 (5136)
Ælfric, from "Catholic Homilies" I, other Homilies,
"Life of St. Chad"
[Ker 333, Gneuss-]
HISTORY: The single scribe is dated to the first half of the 12c by Ker, who characterizes the hand as "a type found commonly in West of England manuscripts of s. xii" ( Cat., p. 403). The contents, predominantly by JElfric, provide a clue to place of origin. They are, first, a collection of homilies for saints' days from an augmented version of the first series of Catholic Homilies (a similar sequence occurs in Cambridge, Corpus Christi College 188 [37]), then a collection of homilies on general themes (a similar sequence occurs in Cambridge, Corpus Christi College 178 [35], with which Hatton 116 shares a distinctive form of two homilies, items 19 and 20, one of which is also shared by London, Lambeth Palace Library 487 [317]). Pope (1967-68: 68-69) infers that Hatton 116 draws the second part of its text from an ancestor of Cambridge, Corpus Christi College 178, itself a manuscript of unknown place of origin but with a Worcester provenance and concludes cautiously of Hatton 116, "Its relation to R [ Cambridge, Corpus Christi College 178] suggests that it was written in the neighbourhood of Worcester, but not necessarily at Worcester itself " (1967-68: 70). Subsequently, Hatton 116 was certainly at Worcester by the 13c, for it received extensive glosses throughout by the "tremulous hand:' It was still at Worcester in 1622-23, since it was included in Young's catalogue of the Cathedral manuscripts, no. 320 (Young, ed. Atkins and Ker 1944).
The manuscript belonged to Christopher, Lord Hatton, in 1644 (Ker, Cat., p. 406). The present binding, dated by Ker to the 17 /18c ( Cat., p. 406), associates the manuscript with Oxford, Bodleian Library Hatton 113+114 [ 384a/b] ( a related pair of manuscripts) and Oxford, Bodleian Library Hatton 115 [385], with which it was acquired by the Bodleian from Sir Christopher Hatton in 1675 (Madan 1922: 968). This association may explain the inscription on p. 1, "Saxon | Homiles | tōm 3" in what Ker characterizes as "an uneducated title-writing hand which occurs in other Hatton manuscripts" (Cat., p. 406). Page 1 is headed 'D' and the manuscript is referred to by this siglum in 17c cross-references in other Hatton manuscripts (Ker, Cat., pp. 403-4). Occasional early modern annotations within the manuscript also reflect this association: at p, 327/14, there is a note in an early modern hand, with a cross-reference to 'C. 131. b' (= Hatton 115, f. 131v). Another such cross-reference occurs at p. 373, at the beginning of item 22, DE SEPTI.FORMI SPIRITU, where 'A. 23: is written in the margin, alluding to another copy in Hatton 113, f. 27r, while a note in the margin of p. 374 indicates Ælfric's authorship and points to the preface of "On the Old Testament:' An annotation at the end, at the foot of p. 395, is by Thomas Barlow.
The manuscript formerly bore the Bodleian designation Junius 24, as remains in the ink inscription on p. i ('MS Junii | 24' struck through in pencil [not on film]) and in the ink designation, '24; written at the head of p. 1 beside the 'D'. It is number 5136 in Madan 1922, as is noted by a sticker on the inside front cover with the designation 'S.C. 5136'. The current classification, 'MS. Hatton | 116; is also cleanly inked on the inside front cover. The Bodleian Library's mark of ownership is stamped on the lower margin of pp. 1, 116, 207, 333, and 375, and in the center of pp. 396,398,400, and 402
Understanding domain symmetry in vanadium oxide phthalocyanine monolayers on Au (111)
No full textUnderstanding the growth of organic semiconductors on solid surfaces is of key importance for the field of organic electronics. Non planar phthalocyanines have shown great promise in organic photovoltaic (OPV) applications, but little of the fundamental surface characterization to understand their structure and properties has been performed. Acquiring a deeper understanding of the molecule/substrate interaction in small molecule systems is a vital step in controlling structure/property relationships. Here we characterize the vanadium oxide phthalocyanine (VOPc)/Au (111) surface using a combination of low energy electron diffraction (LEED) and scanning tunneling microscopy (STM), obtaining complex diffraction patterns which can be understood using two dimensional fast Fourier transform (2D-FFT) analysis of STM images. These measurements reveal coexistence of three symmetrically equivalent in-plane orientations with respect to the substrate, each of which is imaged simultaneously within a single area. Combining scanning probe and diffraction measurements allows symmetrically related domains to be visualized and structurally analyzed, providing fundamental information useful for the structural engineering of non-planar phthalocyanine interfaces
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