5,552 research outputs found

    Synthesis optimization and charge carrier transfer mechanism in LiLuSiO<sub>4</sub>:Ce, Tm storage phosphor

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    LiLuSiO4:Ce and LiLuSiO4:Ce, Tm show very efficient charge carrier storage properties upon beta irradiation after samples have received treatment in vacuum. They outperform the commercial storage phosphor BaFBr(I):Eu2+ in many aspects. The influence of the synthesis conditions, Ce and Tm concentration, nonstoichiometry and codoping with Ca, Hf, Al and Ge are reported. Based on the results of the synthesis optimization, thermoluminescence (TL) emission and TL excitation spectra a mechanism of charge carrier transfer, storage, and recombination during irradiation and thermal or optical readout is proposed.Accepted Author ManuscriptRST/Fundamental Aspects of Materials and EnergyRST/Luminescence Material

    Micro-structured Er 3+-tm 3+ Co-doped Tellurite Fiber For Broadband Optical Amplifier Around 1550nm

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    Micro-structured Er 3+-Tm 3+ co-doped tellurite fiber with three rings of holes was fabricated using a soft glass drawing tower by a stack-and-draw technique. Amplified spontaneous emission (ASE) around 1550nm band were observed when pumped with both, 980nm and 790nm, lasers.6314Russell, P., Photonic crystal fibers (2003) Science, 299, pp. 358-362Knight, J.C., Photonic crystal fibers (2003) Nature, 424, pp. 847-851Kumar, V.V.R.K., George, A.K., Reeves, W.H., Knight, J.C., Russell, P.St.J., Omenetto, F.G., Taylor, A.J., Extruded soft glass photonic crystal fiber for ultrabroad supercontinuum generation (2002) Opt. Exp, 10 (25), pp. 1520-1525Chillcce, E.F., Cordeiro, C.M.B., Barbosa, L.C., Cruz, C.H.B., Er 3+-Tm 3+ co-doped tellurite fibers for broadband optical fiber amplifier around 1550nm band (2006) Opt. Fiber Technol., 12, pp. 185-195Chillcce, E.F., Rodriguez, E., Neves, A.A.R., Moreira, W.C., Cesar, C.L., Barbosa, L.C., Cruz, C.H.B., Tellurite photonic crystal fiber by a stack-and-draw technique (2006) J. Non-cryst. Solids, , accepted to publicationWhite, T.P., McPhedran, R.C., De Sterke, C.M., Botten, L.C., Steel, M.J., Confinement losses in microstructured optical fibers (2001) Opt. Lett, 26 (21), pp. 1660-1663Barbosa, L.C., Cruz, C.H.B., Cesar, C.L., Cordeiro, C.M.B., Chillcce, E.F., Production process of tellurite glass tubes, capillaries and rods Brazilian pending Patent No 018050002734Chillcce, E.F., Cordeiro, C.M.B., Rodriguez, E., Cruz, C.H.B., Cesar, C.L., Barbosa, L.C., Tellurite photonic crystal fiber with Er 3+-Tm 3+ for broadband optical amplifier in 1550nm (2006) Proc. of SPIE, 6116, p. 61160

    Synthesis, structural and magnetic properties of TM22+[MOIV(CN)(8)]center dot nH(2)O

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    Octacyanomolybdates (OCMs) TM2 divided by[Mo(CN)(8)]center dot nHO, where TM is Mn, Fe, Co, Ni, Cu were synthesised and characterised by IR spectroscopy and UV-VIS spectroscopy. The UV-VIS spectrum showed the intervalence charge transfer (IVCT) band between Mo-IV-CN-Cu-II and Mo-V-CN-Cu-I around 510 nm. Studied OCMs adopt tetragonal crystal structure. The H-1 NMR signals reflect the magnetic moment of the TM2- ions (mu(P)). The decay rates of free induction decay (FID) signals increase as pp and the applied static rf-field increases. The spin-lattice relaxation times at 27.7 MHz vary from 0.0187 ins (Mn) up to 0.45 ms (Cu). Magnetization measurements indicate long-range magnetic ordering of Mn- and Co- OCMs with the Curie temperature T-c = 4 K. The remaining OCMs (TM is Fe, Ni, Cu) are paramagnetic down to T = 1.9 K

    El hombre de mi vida: análisis de la traducción de los culturemas del ámbito gastronómico

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    Es opinión compartida que en la producción de Manuel Vázquez Montalbán (MVM) la gastronomía es un elemento narrativo importante y el conjunto de su obra lo demuestra sobradamente. El polifacético autor barcelonés (Barcelona, 1939-Bangkok, 2003) concibe la gastronomía en un sentido amplio como el “arte de preparar y apreciar una buena comida” (2002: 51), así pues no sólo la afición a comer bien, sino también la capacidad de seleccionar los mejores ingredientes, prepararlos y servirlos. Atendiendo a las reflexiones de Newmark (2004: 137) sobre la traducción de las ‘palabras culturales’ en el ámbito de la cultura material, la comida, como subraya este autor, “es para muchos la expresión más delicada e importante de la cultura nacional”, en consecuencia, “los términos alimentarios están expuestos a la gama más variada de procedimientos de traducción”. Nosotros, en este artículo, que se plantea como continuación ideal de uno anterior donde habíamos centrado nuestro análisis en la identificación y catalogación de las diferentes soluciones traductoras adoptadas para trasladar los culturemas del ámbito gastronómico presentes en La soledad del manager, nos proponemos, en primer lugar, al igual que en el precedente, identificar el método traductor empleado sirviéndonos, en parte, de los datos que nos proporcione el inventario recopilatorio de las técnicas de traducción utilizadas en el texto meta (TM). En segundo lugar, mediante la comparación y evaluación de las técnicas translativas utilizadas en cada novela, trataremos de determinar si efectivamente, como es lógico pensar, se ha producido una evolución en el tiempo del método traductor adoptado. El presupuesto del que partimos es el de que las áreas culturales no actúan como depósitos perennemente estancos. Porque es evidente que tanto el contexto de recepción de la traducción como el del texto original evolucionan, cambian. Así pues, a nuestro modo de ver, visto el éxito y el número de traducciones de este autor al italiano, consideramos que el grado de familiaridad del lector italiano con la cultura española-catalana y con la obra de Vázquez Montalbán en el año 2000, año de publicación de L’uomo della mia vita, era probablemente mayor que en 1993, año en el que ve la luz en Italia La solitudine del manager

    GA Landsat 5 TM Analysis Ready Data Collection 3

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    Maintenance and Update Frequency: asNeededStatement: This product is derived from the USGS Landsat Collection 1 archive. The Moderate Resolution Imaging Spectroradiometer (MODIS) MCD43A1 Version 6 Bidirectional Reflectance Distribution Function and Albedo (BRDF/Albedo) Model Parameters dataset was provided by the National Aeronautics and Space Administration (NASA). It was produced daily using 16 days of Terra and Aqua MODIS data at 500 m resolution. The ozone data was provided by Environment Canada. The Aerosol Optical Thickness data was provided by the Commonwealth Scientific and Industrial Research Organisation (CSIRO). The Precipitable Water for Entire Atmosphere data was provided by the National Oceanic and Atmospheric Administration (NOAA) / Earth System Research Laboratory (ESRL) / Physical Sciences Division (PSD). The baseline Digital Surface Model (DSM) data produced from the Shuttle Radar Topography Mission (SRTM) was provided by the National Geospatial-Intelligence Agency (NGA). Level 1 Collection 1 data was provided by the United States Geological Survey (USGS)'s Earth Resources Observation and Science (EROS) Center.&lt;b&gt;BACKGROUND&lt;/b&gt;&lt;br/&gt;&lt;p&gt;&lt;br/&gt;&lt;p&gt;The United States Geological Survey's (USGS) Landsat satellite program has been capturing images of the Australian continent for more than 30 years. This data is highly useful for land and coastal mapping studies. &lt;br/&gt;&lt;p&gt;In particular, the light reflected from the Earth’s surface (surface reflectance) is important for monitoring environmental resources – such as agricultural production and mining activities – over time. &lt;br/&gt;&lt;p&gt;We need to make accurate comparisons of imagery acquired at different times, seasons and geographic locations. However, inconsistencies can arise due to variations in atmospheric conditions, sun position, sensor view angle, surface slope and surface aspect. These need to be reduced or removed to ensure the data is consistent and can be compared over time. &lt;br/&gt;&lt;p&gt;&nbsp&lt;/p&gt;&lt;br/&gt;&lt;b&gt;WHAT THIS PRODUCT OFFERS&lt;/b&gt;&lt;br/&gt;&lt;p&gt;&lt;br/&gt;&lt;p&gt;GA Landsat 5 TM Analysis Ready Data Collection 3 takes Landsat 5 Thematic Mapper (TM) imagery captured over the Australian continent and corrects for inconsistencies across land and coastal fringes. The result is accurate and standardised surface reflectance data, which is instrumental in identifying and quantifying environmental change. &lt;br/&gt;&lt;p&gt;&lt;br/&gt;&lt;p&gt;The TM instrument is an advanced, multispectral scanning, Earth resources sensor which is designed to categorise the Earth's surface. It is particularly useful for agricultural applications and identification of land use. &lt;br/&gt;&lt;p&gt;&lt;br/&gt;&lt;p&gt;This product is a single, cohesive Analysis Ready Data (ARD) package, which allows you to analyse surface reflectance data as is, without the need to apply additional corrections. &lt;br/&gt;&lt;p&gt;&lt;br/&gt;&lt;p&gt;It contains three sub-products that provide corrections or attribution information:&lt;br/&gt;&lt;p&gt;&lt;br/&gt;&lt;p&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1) GA Landsat 5 TM NBAR Collection 3 &lt;br/&gt;&lt;p&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2) GA Landsat 5 TM NBART Collection 3&lt;br/&gt;&lt;p&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3) GA Landsat 5 TM OA Collection 3&lt;br/&gt;&lt;p&gt;&lt;br/&gt;&lt;p&gt;The resolution is a 30 m grid based on the USGS Landsat Collection 1 archive

    The dependence of light extraction improvement on optimized surface microstructure for AlGaN-based UVC-LEDs considering TM-polarized emission

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    In order to improve the light extraction of AlGaN-based short wavelength ultraviolet light emitting diodes (DUC-LEDs), a type of microstructure with high aspect ratio is introduced and optimized on the AlN substrate surface. And, particle swarm optimization (PSO) algorithm is used to inverse design of the surface microstructure to maximize the light extraction efficiency (LEE). Considering that the propagation characteristics of TM-polarized light are different from that of TE-polarized light, the optical field distribution and LEE is analyzed for the UVC-LEDs with different TE-polarized component when the optimized surface microstructure is applied. Furthermore, the preparation process tolerance of the high aspect ratio structure is discussed by calculating the LED's LEE when the structural deviation occurs or morphology changes. Simulation results show that, by using the optimized surface microstructure based on parabola cone array, the LEDs' LEE is increased from 4.4% to 8.7% and from 0.4% to 3.7% for TE-polarized and TM-polarized emission, respectively. In addition, it is demonstrated that the light extraction improvement by the surface microstructure has a good tolerance to the structural deviation and morphology. The results are significant for improving light extraction and realizing high efficient short wavelength AlGaN-based UVC-LEDs by designing surface microstructures.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.ImPhys/Esmaeil Zadeh grou

    Rigor and relevance in empirical TM research: Key issues and challenges Author links open overlay panel

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    This paper aims to offer a critical reflection on the way Talent Management (TM) is investigated in practice, by addressing the key issues regarding the quality (in terms of rigor and relevance) of academic empirical TM research and therefore the critical scrutiny of TM scholars’ work. We will argue that despite the growth in the quantity, the quality of many empirical TM papers is lagging behind and hindering the progress of the academic field of TM. Based on a content analysis of 174 peer-reviewed articles published between 2006 and 2017, the paper outlines nine critical issues regarding the quality of the existent empirical TM research. In order to improve the positioning of the field as well as the impact of TM research on practice itis absolutely necessary for TM scholars to secure the quality of academic empirical TM research. Also, the collaboration between practitioners and scholars should increase.Peer ReviewedPostprint (author's final draft

    Rigor and relevance in empirical TM research: Key issues and challenges Author links open overlay panel

    No full text
    This paper aims to offer a critical reflection on the way Talent Management (TM) is investigated in practice, by addressing the key issues regarding the quality (in terms of rigor and relevance) of academic empirical TM research and therefore the critical scrutiny of TM scholars’ work. We will argue that despite the growth in the quantity, the quality of many empirical TM papers is lagging behind and hindering the progress of the academic field of TM. Based on a content analysis of 174 peer-reviewed articles published between 2006 and 2017, the paper outlines nine critical issues regarding the quality of the existent empirical TM research. In order to improve the positioning of the field as well as the impact of TM research on practice itis absolutely necessary for TM scholars to secure the quality of academic empirical TM research. Also, the collaboration between practitioners and scholars should increase.Peer Reviewe

    Dalla Biblioteca Comunale di Urbania: due raccolte musicali per un interprete

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    In the Library of Urbania (Marche, Italy) six musical manuscripts containing seventeenth century arias and cantatas are preserved. They belonged to an aristocratic family of Apecchio, (Marche), the Ubaldini. This article investigates two of them containing cantatas by Cossoni, Giovanni Bonaventura Viviani, Legrenzi Bassani and others, and in which there is the note “ex libris Antonij Barbarini”. This article reconstructs the origin of these two manuscripts, for whom the author individuated the probable owner, the singer Ippolito Fusai, by means the repertory identified in it. A thorough investigation of this hitherto little-known manuscripts may shed new light on the diffusion and transmission of music in Italy during the Seventeenth and early-Eighteenth centurie

    Author Correction: Differential epigenetic reprogramming in response to specific endocrine therapies promotes cholesterol biosynthesis and cellular invasion

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    This Article omits a declaration from the Competing Interests statement, which should have included the following: ‘One of the authors, Y.L., is an editor on the staff of Nature Communications, but was not in any way involved in the journal review process. The other authors declare no competing interests.’ Also, the Article contains an error in the name of the author Alba Rodriguez-Meira, which is incorrectly given as Alba Meira. These errors have not been corrected in either the PDF or HTML versions of the Article. © 2019, The Author(s)
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