2,769 research outputs found
Sermon, que en la misa votiva solemne, que ofreciò a Dios en honor de la SS. Virgen Maria : (en accion de gracias por el feliz alumbramiento de la ... Princesa de Asturias ... nacimiento de los dos infantes Carlos, y Phelipe, y ... la paz con la nacion britanica) la santa iglesia de Lerida, el dia 23 de Noviembre de 1783 ...
Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-2010Fecha tomada del textoSign.: (A-C)4, D3Notas a pie de págin
Atomic Processes in Planetary Nebulae and H II Regions
Spectroscopic studies of Planetary Nebulae (PNe) and H {\sc ii} regions have
driven much development in atomic physics. In the last few years the
combination of a generation of powerful observatories, the development of ever
more sophisticated spectral modeling codes, and large efforts on mass
production of high quality atomic data have led to important progress in our
understanding of the atomic spectra of such astronomical objects. In this paper
I review such progress, including evaluations of atomic data by comparisons
with nebular spectra, detection of spectral lines from most iron-peak elements
and n-capture elements, observations of hyperfine emission lines and analysis
of isotopic abundances, fluorescent processes, and new techniques for
diagnosing physical conditions based on recombination spectra. The review is
directed toward atomic physicists and spectroscopists trying to establish the
current status of the atomic data and models and to know the main standing
issues.Comment: 9 pages, 1 figur
Technical Evolution of Ceramic Tile Printing
[EN] Ceramic tile decorating techniques have evolved significantly in recent years. Digital inkjet printing technology has enabled digital systems to be used for the direct decoration of ceramic tiles, revolutionizing ceramic tile decoration and providing many advantages over traditional decoration techniques. It was the formulation of inks with soluble and vitrifiable stains that allowed inkjet printing technology to be introduced into ceramic tile decoration. The incorporation of milled inorganic pigments into the inks broadened the available color palette. However, the colloidal instability of these inks and the constraints of the printing heads themselves made it necessary to reduce pigment particle size, thus limiting color saturation and the color gamut. In order to increase color saturation and obtain a set of pigmented inks with colors more closely resembling CMYK colors, pigments with larger particle sizes need to be used. Indeed, other digital decorating techniques, such as xerography, allow larger particle sizes to be used, while also providing the advantages associated with digital decoration. However, the implementation of this technique for ceramic tile decoration requires the development of appropriate ceramic toners and adaptation of printing machines. This article reviews the technical evolution of ceramic tile printing and describes the development of a prototype, based on xerographic printing, that is able to print ceramic tiles directly and provides greater color intensity and a wider color gamut.40140756
From Scattering in Black Hole Backgrounds to Higher-Spin Amplitudes: Part I
The scattering of massless waves of helicity in Schwarzschild and Kerr backgrounds is revisited in the long-wavelenght regime. Using a novel description of such backgrounds in terms of gravitating massive particles, we compute classical wave scattering in terms of QFT amplitudes in flat space, to all orders in spin. The results are Newman-Penrose amplitudes which are in direct correspondence with solutions of the Regge-Wheeler/Teukolsky equation. By introducing a precise prescription for the point-particle limit, in Part I of this work we show how both agree for at finite values of the scattering angle and arbitrary spin orientation. Associated classical observables such as the scattering cross sections, wave polarizations and time delay are studied at all orders in spin. The effect of the black hole spin on the polarization and helicity of the waves is found in agreement with previous analysis at linear order in spin. In the particular limit of small scattering angle, we argue that wave scattering admits a universal, point-particle description determined by the eikonal approximation. We show how our results recover the scattering eikonal phase with spin up to second post-Minkowskian order, and match it to the effective action of null geodesics in a Kerr background. Using this correspondence we derive classical observables such as polar and equatorial scattering angles. This study serves as a preceding analysis to Part II, where the Gravitational Wave () case will be studied in detail
Strategies in Maximizing the Use of Existing Technology in Philippine Schools
One of the challenges that continue to confront teachers in Philippine schools is the accessibility of technology for the study and learning of mathematics. In this paper, we will look at several situations and actual experiences happening in Philippine schools. Strategies on how existing technological tools are to be maximized will be discussed, including the creation of lesson plans and classroom activities. The use of technology-based manipulatives in mathematics learning as alternatives to unavailable technology will also be looked at
Introducción
La versión en PDF se generó a partir de los archivos editables de Indesign CC2020 correspondientes a la primera edición digital
Consideraciones finales: integrar. Defender el reino, conservar la monarquía
La versión en PDF se generó a partir de los archivos editables de Indesign CC2020 correspondientes a la primera edición digital
Escalas migratorias en la configuración imperial ibérica
Con base en el cruce de fuentes que dan cuenta de la actividad de indianos residentes en la corte de Madrid durante la primera mitad del siglo XVII, esta contribución tiene por objetivo estudiar formas de movilidad que se interrelacionaron en las capitales de las monarquías ibéricas. Se propone el empleo de una herramienta analítica para describir y comparar “confluencias migratorias” que tuvieron como epicentros la corte de Madrid, Sevilla, la ciudad de México, el real minero de Zacatecas y algunas otras ciudades de la América española. Se apuesta por considerar que las formas de movilidad laboral, local y regional, las tramas de intereses indianos en la corte de Madrid y la acción política resultante, de carácter transatlántico, fueron determinantes, en sus diversas escalas, en la configuración imperial de la monarquía española
Movilidad indiana en la corte de Madrid durante el siglo XVII: mercedes de hábito, “Patria común” y entramados clientelares
El presente artículo se aproxima al papel de la movilidad de los indianos y su lugar en el conjunto de la monarquía durante el siglo XVII. A partir de las pruebas de Juan de Cervantes y Cervantes, descendiente de una de las principales familias del patriciado urbano mexicano, para ingresar a la orden de caballería de Santiago en 1670, se revisa el entramado transatlántico de sus testigos, los cambios en la movilidad indiana con respecto a su padre y abuelo, también caballeros de Santiago, y la centralidad de sus agentes en los negocios de las Indias en la corte de Madrid
Gobernar: la Audiencia Real de México en 1624
La versión en PDF se generó a partir de los archivos editables de Indesign CC2020 correspondientes a la primera edición digital
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