276,017 research outputs found
Sytze van der Veen, Groot-Nederland & Groot-Colombia 1815-1830. De droom van Willem I
No full textSytze van der Veen, Groot-Nederland & Groot-Colombia 1815-1830. De droom van Willem I (Hilversum: Verloren, 2015, 272 pp., isbn 978 90 8704 545 6)
The AM Canum Venaticorum binary SDSS J173047.59+554518.5
No full textThe AM Canum Venaticorum (AM CVn) binaries are a rare group of hydrogen-deficient, ultrashort period, mass-transferring white dwarf binaries and are possible progenitors of Type Ia supernovae. We present time-resolved spectroscopy of the recently discovered AM CVn binary SDSS J173047.59+554518.5. The average spectrum shows strong double-peaked helium emission lines, as well as a variety of metal lines, including neon; this is the second detection of neon in an AM CVn binary, after the much brighter system GP Com. We detect no calcium in the accretion disc, a puzzling feature that has been noted in many of the longer period AM CVn binaries. We measure an orbital period, from the radial velocities of the emission lines, of 35.2 ± 0.2 min, confirming the ultracompact binary nature of the system. The emission lines seen in SDSS J1730 are very narrow, although double-peaked, implying a low-inclination, face-on accretion disc; using the measured velocities of the line peaks, we estimate i ≤ 11°. This low inclination makes SDSS J1730 an excellent system for the identification of emission lines
van der Veen (Sytze). Groot-Nederland & Groot-Colombia 1815-1830. De droom van Willem I, 2015
No full textTamse C. A. van der Veen (Sytze). Groot-Nederland & Groot-Colombia 1815-1830. De droom van Willem I, 2015. In: Revue belge de philologie et d'histoire, tome 94, fasc. 2, 2016. Histoire Médiévale, Moderne et Contemporaine – Middleleeuwse, Moderne en Hedendaagse Geschiedenis. pp. 574-575
Live Observations of Catalysts Using High-Pressure Scanning Probe Microscopy
No full textRecently it has become clear that essential discrepancies exist between the behavior of catalysts under industrial conditions and the (ultra)high vacuum conditions of traditional laboratory experiments. Differences in structure, composition, reaction mechanism, activity, and selectivity have been observed. These differences indicated the presence of the “pressure gap”, and made it clear that meaningful results can only be obtained at high pressures and temperatures. This chapter focuses on the development of scanning probe microscopy for operando observations of active model catalysts. We have developed instrumentation that combines an ultrahigh vacuum environment for model catalyst preparation and characterization with a high-pressure flow reactor cell, integrated with either a scanning tunneling microscope or an atomic force microscope. We combine the structural observations obtained under high-pressure, high-temperature conditions with time-resolved mass spectrometry measurements on the gas mixture leaving the reactor. In this way, we can correlate structural changes of the catalyst due to the gas composition with its catalytic performance. This chapter provides an overview of the instruments we developed and illustrates their performance with results obtained for different model catalysts and reactions.</p
Survey on Rules on Loss of Nationality in International Treaties and Case Law. CEPS Paper in Liberty and Security in Europe No. 57, 30 August 2013
No full textThis paper offers a picture of the obligations existing under international and European law in respect of the loss of nationality. It describes international instruments including obligations in this field with direct relevancy for the loss of nationality of Member States of the European Union, but also obligations regarding loss of nationality in regional non-European treaties. Attention is given to two important judicial decisions of the European Court of Justice (Janko Rottmann) and the European Court of Human Rights (Genovese v Malta) regarding nationality. Special attention is devoted to Article 15 of the Universal Declaration of Human Rights, which forbids the arbitrary deprivation of nationality. A survey is provided of possible sub-principles that can be derived from this rule. Finally, some observations are made on the burden of proof in cases of loss of nationality
The trunk in neuromuscular disorders: a neglected part of the chain
No full textContains fulltext :
207777.pdf (Publisher’s version ) (Open Access)Radboud University, 23 oktober 2019Promotores : Geurts, A.C.H., Dieën, J.H. van Co-promotores : Groot, I.J.M. de, Kingma, I
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
The IPHAS catalogue of H alpha emission-line sources in the northern Galactic plane
No full textWe present a catalogue of point-source H alpha emission-line objects selected from the INT/WFC Photometric Ha Survey (IPHAS) of the northern Galactic plane. The catalogue covers the magnitude range 13 <= r' <= 19.5 and includes Northern hemisphere sources in the Galactic latitude range -5 degrees < b < 5 degrees. It is derived from similar to 1500 deg(2) worth of imaging data, which represents 80 per cent of the final IPHAS survey area. The electronic version of the catalogue will be updated once the full survey data become available. In total, the present catalogue contains 4853 point sources that exhibit strong photometric evidence for Ha emission. We have so far analysed spectra for similar to 300 of these sources, confirming more than 95 per cent of them as genuine emission-line stars. A wide range of stellar populations are represented in the catalogue, including early-type emission-line stars, active late-type stars, interacting binaries, young stellar objects and compact nebulae.
The spatial distribution of catalogue objects shows overdensities near sites of recent or current star formation, as well as possible evidence for the warp of the Galactic plane. Photometrically, the incidence of Ha emission is bimodally distributed in (r' - i'). The blue peak is made up mostly of early-type emission-line stars, whereas the red peak may signal an increasing contribution from other objects, such as young/active low-mass stars. We have cross-matched our H alpha-excess catalogue against the emission-line star catalogue of Kohoutek & Wehmeyer, as well as against sources in SIMBAD. We find that fewer than 10 per cent of our sources can be matched to known objects of any type. Thus IPHAS is uncovering an order of magnitude more faint (r' > 13) emission-line objects than were previously known in the Milky Way
Asymmetric gate induced drain leakage and body leakage in vertical MOSFETs with reduced parasitic capacitance
No full textVertical MOSFETs, unlike conventional planar MOSFETs, do not have identical structures at the source and drain, but have very different gate overlaps and geometric configurations. This paper investigates the effect of the asymmetric source and drain geometries of surround-gate vertical MOSFETs on the drain leakage currents in the OFF-state region of operation. Measurements of gate-induced drain leakage (GIDL) and body leakage are carried out as a function of temperature for transistors connected in the drain-on-top and drain-on-bottom configurations. Asymmetric leakage currents are seen when the source and drain terminals are interchanged, with the GIDL being higher in the drain-on-bottom configuration and the body leakage being higher in the drain-on-top configuration. Band-to-band tunneling is identified as the dominant leakage mechanism for both the GIDL and body leakage from electrical measurements at temperatures ranging from ?50 to 200?C. The asymmetric body leakage is explained by a difference in body doping concentration at the top and bottom drain–body junctions due to the use of a p-well ion implantation. The asymmetric GIDL is explained by the difference in gate oxide thickness on the vertical (110) pillar sidewalls and the horizontal (100) wafer surface
Hanseatic Commerce in Textiles from the Low Countries and England during the Later Middle Ages:
No full textThis paper analyses the major changes in textile products, production costs, prices, and market orientations during the era when the �draperies� or cloth industries of the late-medieval Low Countries and England had become increasingly dependent upon northern markets and the German Hanseatic League as the major vehicle in marketing their textiles. In several previous articles, I had examined the major factors that had led to the industrial and commercial reorientations of the these cloth industries during the 14th and 15th centuries. In brief, the spreading stain of widespread warfare, piracy, and general insecurity, especially in the Mediterranean basin, from the 1290s (to the 1460s), led to a rise in transport and transaction costs that, in turn, had three major consequences for the Low Countries� and England�s textile-based economies: (1) to cripple the export-oriented production of the very cheap and light fabrics, most of which had been sent to Mediterranean markets and had comprised the bulk of northern textile shipments to this region; (2) to encourage most draperies in the Low Countries and England to re-orient their export-oriented cloth production more and more towards high-priced ultra-luxury quality woollens, woven almost exclusively from the finer English wools, but wools that came to be burdened with high export taxes; and (3) to force these northern cloth industries, facing increasing difficulties in Mediterranean commerce, to become far more dependent on Hanseatic merchants and German towns for their cloth sales, certainly by the mid-14th century. But in effecting these industrial and commercial orientations, the Low Countries� draperies encountered a new and even more dangerous challenge from expanding English competition in textiles, which enjoyed the signal advantage of control over high quality wools, which, for the domestic cloth industry, were tax-free and much cheaper. Nevertheless, for reasons outlined in this and earlier papers, the English took well more than a century to achieve final victory in the woollen broadcloth trade, though one that came to be fundamentally based upon German commercial forces, along with other commercial, monetary, and industrial factors outlined in this paper. Obeying the law of comparative advantage, the textile industries of the Low Countries responded to this English victory by once more re-orienting production to cheaper cloths, especially cheap, light worsted-says; but they were able to do so only when structural changes in European markets and trading networks, with falling transaction costs, from the later 15th century, once more favoured the export-oriented production of such cheap textiles. The major contributions of this paper, however, also lie in analysing production, product, cost, and prices changes in textiles, both cheap worsted and luxury woollens, in terms of 15 tables: (1) English wool and broadcloth exports, 1281-1550; (2) Production indices for the woollen cloth industries of the southern Low Countries, 1316-1575; (3) Production indices for the Hondschoote sayetterie and Leiden woollen industry, 1376-1570; (4 - 7) Prices and relative values of Ghent woollens: in terms of values of commodity baskets and a mason�s daily wage: 1331-1570 (no. of days� wages to buy one cloth); (8) Prices of English woollen cloths at Cambridge and Winchester: and values in terms of a mason�s daily wage; and mean values of English cloth exports in pounds sterling, groot Flemish, and florins; (9) Prices of various Flemish woollen broadcloths, compared to the Flemish composite price index: 1351-1550; (10) Prices of various Brabantine woollen cloths, compared to the Brabant composite price index; and the no. of days� wages for a master mason to buy one Mechelen broadcloth, 1351-1520; (11) Prices of Hondschoote Says and Ghent Dickedinnen Woollens, in pounds groot Flemish, compared with the purchasing power an Antwerp master mason's daily wages; (12) Purchase prices of Ghent woollens: by rank order of values, 1360-69: in pounds groot Flemish, units of Commodity Baskets of equivalent value, and the number of a master mason�s day�s wages required to purchase each cloth (from the cheapest to highest priced); (13) Dimensions, composition, and weights of selected Flemish and English textiles, 1456-1579; (14) Prices of and taxes on exported English wools (sacks), 1211-1500: (15) Prices of English Wools (48 grades) sold at the Calais Staple, in 1475 and 1499.Germany, the Low Countries, England, Hanseatic League, woollens, worsteds, wools, dyestuffs, prices, wages, inflation, deflation, monetary changes
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