223,049 research outputs found

    Tres discursos de D. J. M. Rivas Groot

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    Compilación de discursos pronunciados por José María Rivas Groot, en calidad de Ministro de Instrucción Pública, publicados en la Revista de Instrucción Pública de Colombia.- Tercer contenido del “Quijote” / Discurso del Sr. José M. Rivas en nombre del Gobierno y de la Junta organizadora. -Voto nacional / Discurso pronunciado en 1901 por el Sr. José M. Rivas Groot en la peregrinación al templo del Sagrado Corazón de Jesús. -Discurso sobre instrucción pública / pronunciado por el Sr. José M. Rivas Groot en el Senado de 1903

    Plangebied Veilingterrein te Bleiswijk (Klappolder), gemeente Lansingerland; archeologisch vooronderzoek: een bureau- en inventariserend veldonderzoek.

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    Coordinaten:97.310/449.259 Datum einde onderzoek:21 maart 2008, rapportage: juni 2008 Projectmedewerkers:drs. R. den Boer & drs. M. Rietkerk Complextype(n):xxx Datering:xxx Diversen: Groot, R.W. de en M. Rietkerk, Plangebied Veilingterrein te Bleiswijk (Klappolder), gemeente Lansingerland; archeologisch vooronderzoek: een bureau- en inventariserend veldonderzoek. RAAPnotitie 2744 (WEESP, 2008

    Humans and nature : public visions on their interrelationship

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    Contains fulltext : 81997.pdf (Publisher’s version ) (Open Access)Radboud Universiteit Nijmegen, 08 september 2010Promotor : Groot, W.T. de Co-promotor : Arts, B.J.M.168 p

    Het Puberbrein

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    De Groot, R. H. M. (2010, September). Het puberbrein. Gepresenteerd in de Obenbare Bibliotheek Nuth, Nuth, Nederland.Waarom staan pubers nou zo laat op? Waarom blijft hun huiswerk altijd tot het laatste liggen? Is het zo moeilijk om een realistische planning te maken? In deze presentatie wordt op interactieve wijze ingegaan op bovenstaande onderwerpen. Er wordt verteld hoe het brein zich ontwikkelt en wat er met het brein gebeurt tijdens de puberteit. Ook wordt ingegaan op verschillen tussen jongens en meisjes. Op basis van nieuw wetenschappelijk onderzoek wordt getoond dat het niet raar is dat veel adolescenten nog niet zelfstandig kunnen plannen en organiseren. Er wordt aangeven dat de omgeving, u dus ook, een belangrijke rol kan spelen bij verdere uitrijping van de hersenen tijdens de adolescentie

    Self-aligned silicidation of surround gate vertical MOSFETs for low cost RF applications

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    We report for the first time a CMOS-compatible silicidation technology for surround-gate vertical MOSFETs. The technology uses a double spacer comprising a polysilicon spacer for the surround gate and a nitride spacer for silicidation and is successfully integrated with a Fillet Local OXidation (FILOX) process, which thereby delivers low overlap capacitance and high drive-current vertical devices. Silicided 80-nm vertical n-channel devices fabricated using 0.5-?m lithography are compared with nonsilicided devices. A source–drain (S/D) activation anneal of 30 s at 1100 ?C is shown to deliver a channel length of 80 nm, and the silicidation gives a 60% improvement in drive current in comparison with nonsilicided devices. The silicided devices exhibit a subthreshold slope (S) of 87 mV/dec and a drain-induced barrier lowering (DIBL) of 80 mV/V, compared with 86 mV/dec and 60 mV/V for nonsilicided devices. S-parameter measurements on the 80-nm vertical nMOS devices give an fT of 20 GHz, which is approximately two times higher than expected for comparable lateral MOSFETs fabricated using the same 0.5-?m lithography. Issues associated with silicidation down the pillar sidewall are investigated by reducing the activation anneal time to bring the silicided region closer to the p-n junction at the top of the pillar. In this situation, nonlinear transistor turn-on is observed in drain-on-top operation and dramatically degraded drive current in source-on-top operation. This behavior is interpreted using mixed-mode simulations, which show that a Schottky contact is formed around the perimeter of the pillar when the silicided contact penetrates too close to the top S/D junction down the side of the pillar

    The AM Canum Venaticorum binary SDSS J173047.59+554518.5

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    The 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

    Asymmetric gate induced drain leakage and body leakage in vertical MOSFETs with reduced parasitic capacitance

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    Vertical 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

    Plangebied Middelweg-Noord te Rockanje, gemeente Westvoorne; archeologisch vooronderzoek: een bureau- en inventariserend veldonderzoek

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    Datum einde onderzoek: mei 2008 Groot, R.W. de, Plangebied Middelweg-Noord te Rockanje, gemeente Westvoorne; archeologisch vooronderzoek: een bureau- en inventariserend veldonderzoek, RAAPrapport 1738 (Weesp, 2008) Ivm met maaiveldverlaging binnen verschillende zones heeft een archeologisch onderzoek plaatsgevonden. Deze melding betreft de deelgebieden 1 t/m 3

    Dataset for Antenna-assisted picosecond control of nanoscale phase-transition in vanadium dioxide

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    Otto L Muskens, Luca Bergamini, Yudong Wang, Jeffrey M Gaskell, Nerea Zabala, CH de Groot, David W Sheel and Javier Aizpurua. Antenna-assisted picosecond control of nanoscale phase-transition in vanadium dioxide. Light: Science &amp; Applications Volume 6, 2016; doi: 10.1038/lsa.2016.173.</span

    Divorce amongst the Sotho of Groot Spelonken

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    Divorce amongst the Sotho of Groot Spelonken by M. Sehlodimela (written in Noord-Sotho). Forms part of van Warmelo Collection housed at the University of Pretoria
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