68 research outputs found

    Кодикография и Компьютер

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    This paper was presented at the "International Data Bases for Medieval Manuscript Studies" conference at Katholieke Universiteit, Nijmegen, September 1987.Albert Gruijs, professor of Ancillary Historical Disciplines, Katholieke Universiteit (Catholic University), Nijmegen; William R. Veder, professor of Slavic Philology, Katholieke Universiteit (Catholic University), NijmegenA. Gruijs and J. van Krieken - Katholieke Universiteit (Catholic University), NijmegenOn 1 August 1980, a research team was formed at the Catholic University (Nijmegen) to create a system for description and cataloguing of manuscripts, the PCC (= Producing Codicological Catalogues with the Aid of Computers) project under the direction of professors Albert Gruijs (Ancillary Historical Disciplines) and Cees Koster (Informatics); at the end of 1981, they were joined by professor William Veder (Slavic Philology). They reviewed all extant methods of manuscript description and cataloguing including all experiences in electronic recording and processing of the relevant data, and decided to create a comprehensive system that would satisfy certain requirements.... At the end of 1983, a Dutch version of the SDDR recording software was produced for use on Philips P 2000 and the portable Osborne M 1 PC's under the CP/M operating system; also, a Dutch user's manual for this part of the system was produced. At the same time, an extensive description of the codicological side of the system was published, the book "Codicografie en computer" (= Nijmeegse codicologische cahiers 1) Nijmegen (AI fa) 1983, the essentials of which are rendered here in parallel English and Russian text, the examples from Latin and Low German manuscripts being replaced simultaneously by examples from Slavic manuscripts.A brief summary of the project is given, followed by a long list of descriptive elements desirable for encoding manuscript descriptions. The article provides parallel text in both English and Russian

    Slavonic Translations of Saint Basil’s Works

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    This feature "ЛѢТОПИСЬ" ('Chronicle') reports on recent events in the field of Early Slavic studies, e.g., celebrations, conferences, symposia, announcements of forthcoming colloquia, and past study groups, etc.On March 21-24 1981, in Birmingham, the Fifteenth Spring Symposium of Byzantine Studies held a conference on Byzantium and the Slavs. This announcement gives a summary of presentations by Faith C.M. Wigzell, Danica Petrović, Dimitrije Stefanović, William R. Veder, and Francis J. Thomson on the following topics: hagiographical writing among the Orthodox Slavs, the importance of the Chilendari Music Manuscripts for the history of Serbian church music, the melodic origin of a sticheron in honor of Prince Lazar, the imitation of Byzantine models in translations, and Slavonic translations of St. Basil's works

    Solid-state reference electrodes based on carbon nanotubes and polyacrylate membranes

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    A novel potentiometric solid-state reference electrode containing single-walled carbon nanotubes as the transducer layer between a polyacrylate membrane and the conductor is reported here. Single-walled carbon nanotubes act as an efficient transducer of the constant potentiometric signal originating from the reference membrane containing the Ag/AgCl/Cl− ions system, and they are needed to obtain a stable reference potentiometric signal. Furthermore, we have taken advantage of the light insensitivity of single-walled carbon nanotubes to improve the analytical performance characteristics of previously reported solid-state reference electrodes. Four different polyacrylate polymers have been selected in order to identify the most efficient reservoir for the Ag/AgCl system. Finally, two different arrangements have been assessed: (1) a solid-state reference electrode using photo-polymerised n-butyl acrylate polymer and (2) a thermo-polymerised methyl methacrylate:n-butyl acrylate (1:10) polymer. The sensitivity to various salts, pH and light, as well as time of response and stability, has been tested: the best results were obtained using single-walled carbon nanotubes and photo-polymerised n-butyl acrylate polymer. Water transport plays an important role in the potentiometric performance of acrylate membranes, so a new screening test method has been developed to qualitatively assess the difference in water percolation between the polyacrylic membranes studied. The results presented here open the way for the true miniaturisation of potentiometric systems using the excellent properties of single-walled carbon nanotubes

    Bilateral multifocal Warthin's tumors in upper neck lymph nodes. report of a case and brief review of the literature

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    Cystadenolymphomas (Warthin's tumors) are the second most frequent lesions of the parotid gland. Due to their benign clinical behavior, the low rates of recurrence and malignant transformation they were classified as tumor-like lesions. In addition, a polyclonal growth of the epithelial components of the tumor could be detected. Warthin's tumors occur bilateral in 7-10%, whereas a multifocal appearance is extremely rare. Even if the pathogenesis is still unclear a heterotopia of salivary tissue during embryogenesis is the most likely explanation for the origin of these tumors in the upper neck and periparotideal region. Here we present a rare case of bilateral, multifocal, extraglandular Warthin's tumors in lymph nodes of the upper neck and give a brief review of the literature. If a primary malignancy can be excluded by a careful staging procedure prior to the operation an isolated excision of the lesions of the neck is the adequate treatment

    Bar Dates. Een rechtsvergelijkende verkenning

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    Development of an improved ligand mimetic calibration system for the analysis of iron(III) in seawater using the iron(III) chalcogenide glass ion selective electrode: A combined mechanistic and analytical study

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    © 2014 Elsevier B.V. All rights reserved. Further to previous work on a seawater ligand mimetic calibration system for the electroanalysis of iron(III) in seawater using the iron chalcogenide glass ion-selective electrode (ISE), this study utilized alternative blends of synthetic ligands, in order to fine-tune and optimize the calibration response characteristics of this sensor for the electroanalysis of free iron(III) in seawater. Herein, an alternative calibration system (ACS) was derived using a mixture of 10-4 M iron(III) chloride, 10-4 M ethylenediaminetetraacetic acid (EDTA), 10-3 M copper(II) sulphate, 5 × 10-3 M ethylenediamine (EN) and 0.60 M sodium chloride yielding a Nernstian response of about 30 mV decade-1. The electroanalysis of free iron(III) in seawater using the ACS generated a free iron(III) level commensurate with the predicted organic and inorganic speciation of iron(III) in seawater. Furthermore, electrochemical impedance spectroscopy (EIS), synchrotron radiation X-ray photoelectron spectroscopy (SR-XPS) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy have demonstrated that the surface reaction processes of this membrane in the ACS are comparable to those experienced in a natural seawater matrix. Ultimately, this study demonstrated that the ACS can mimic the surface chemistry and concomitant potentiometric response characteristics of the iron(III) sensor in seawater, enabling reliable electroanalyses of free iron(III) in seawater

    Annealing impacts on microstructural, optical, mechanical properties of sputtered CrN thin film coatings: Experimental studies and finite element modeling

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    Chromium nitride (CrN) coatings were deposited by magnetron sputtering onto Si(100) substrates. The coatings were then annealed at different temperatures (500–800 °C in steps of 100 °C) in air for 1 h. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), UV–Vis spectroscopy, nanoindentation tests and finite element modeling (FEM) were conducted in order to investigate their structural, morphological, optical and mechanical properties. XRD patterns show that the crystallinity of the CrN phase increases with the rise in annealing temperatures together with its preferred orientations along (111) and (200) diffraction planes. The lattice constants were slightly reduced from 4.19 to 4.11 nm at 800 °C. The lattice micorstrains and residual stresses were also reduced as the annealing temperatures rose as a result of reduced defects, dislocations and vacancies. Smooth grain-like surfaces with grain sizes ranging between ∼50 and 250 nm were confirmed by FESEM micrographs. XPS studies indicated the existence of Cr and N on the coating systems. Optical studies showed that with the rise in annealing temperature of up to 700 °C, the solar absorptance of CrN coatings is increased from 61% to 89% and slightly decreased at 800 °C, while the optical band-gap energy dropped from 2.62 to 1.38 eV and slightly increased to 1.48 eV at 800 °C. A gradual increase of dielectric constants of CrN films were realized with the subsequent annealing progression. Nanoindentation results indicated that as the annealing progresses, the hardness and elastic modulus values are lowered
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