¡Ay, qué dolor! (1701) de Antonio de Salazar: contextos para un villancico barroco transcrito por Manuel M. Ponce

22 páginas.Capítulo incluido en el libro: De Nueva España a México: el universo musical mexicano entre centenarios (1517-1917). Javier Marín-López (ed. lit.). Sevilla, Universidad Internacional de Andalucía, 2020. Pags.: 569-589. Enlace: http://hdl.handle.net/10334/538

Propuesta desarrollo del sistema de distribución en la cadena de abastecimiento y política de inventarios de Randys Ltda.

Ingeniero (a) IndustrialPregrad

Quemador poroso

Quemador poroso adaptado para ser alimentado con diferentes tipos de gases, que comprende un soporte que incluye un conducto a través del cual entra una mezcla de aire/gas en el quemador poroso, y una estructura cerámica, soportada por el soporte, que comprende una esponja inicialmente polimérica que se impregna con una barbotina, comprendiendo dicha barbotina al menos un material cerámico. La estructura cerámica tiene una porosidad final de entre aproximadamente 50 ppi hasta aproximadamente 70 ppi, y una densidad final de entre aproximadamente 0.45 hasta aproximadamente 0.65 g/cm3.Peer reviewedConsejo Superior de Investigaciones Científicas (España), P.I. Prosider Ibérica S.A, Ikerlan S COOPB1 Patente sin examen previ

Using one-dimensional modeling to analyse the influence of the use of biodiesels on the dynamic behavior of solenoid-operated injectors in common rail systems: Detailed injection system model

A combined experimental and computational investigation has been performed in order to evaluate the influence of physical properties of biodiesel on the injection process in a common-direct injection system with second generation solenoid injectors. For that purpose, after a complete characterization of the system, which involved mechanical and hydraulic characterization, a one-dimensional model has been obtained and extensively validated. Simulations have then been performed with a standard diesel and a 100% rape methyl ester (RME) biodiesel which allowed a comparison and analysis of the dynamic response of the injector to be done. Different injection strategies involving main injection and main plus post-injection have been used to explore the impact of the use of biodiesel on the performance and stability of solenoid injectors. As far as the dynamic response of the injector is concerned, the results obtained have clearly shown that the use of biodiesel affects the dynamic response of the needle, especially at low injection pressures. The behavior of the system under multi-injection strategies (main plus post-injection) has been also evaluated determining for different operating conditions (injection pressures and backpressures) the minimum dwell time between injections to assure a stable behavior in the injection process (mass flow rate). Important differences have been found between biodiesel and standard diesel in this critical parameter at low injection pressures, becoming less important at high injection pressure. Finally, a modification on the injector hardware has been proposed in order to compensate these differences.This research has been funded by "Ministerio de Ciencia e Innovacion" in the frame of the project "Estudio teorico experimental de la influencia del combustible sobre la cavitacion y el desarrollo del chorro evaporative (FlexiFuel)", Reference TRA2010-17564.Payri Marín, R.; Salvador Rubio, FJ.; Marti Aldaravi, P.; Martínez López, J. (2012). Using one-dimensional modeling to analyse the influence of the use of biodiesels on the dynamic behavior of solenoid-operated injectors in common rail systems: Detailed injection system model. Energy Conversion and Management. 54(1):90-99. https://doi.org/10.1016/j.enconman.2011.10.004S909954

Effect of turbulent model closure and type of inlet boundary condition on a Large Eddy Simulation of a non-reacting jet with co-flow stream

[EN] In this paper, the behavior and turbulence structure of a non-reacting jet with a co-flow stream is described by means of Large Eddy Simulations (LES) carried out with the computational tool OpenFoam. In order to study the influence of the sub-grid scale (SGS) model on the main flow statistics, Smagorinsky (SMAG) and One Equation Eddy (OEE) approaches are used to model the smallest scales involved in the turbulence of the jet. The impact of cell size and turbulent inlet boundary condition in resulting velocity profiles is analyzed as well. Four different tasks have been performed to accomplish these objectives. Firstly, the simulation of a turbulent pipe, which is necessary to generate and map coherent turbulence structure into the inlet of the non-reacting jet domain. Secondly, a structured mesh based on hexahedrons has been built for the jet and its co-flow. The third task consists on performing four different simulations. In those, mapping statistics from the turbulent pipe is compared with the use of fluctuating inlet boundary condition available in OpenFoam; OEE and SMAG approaches are contrasted; and the effect of changing cell size is investigated. Finally, as forth task, the obtained results are compared with experimental data. As main conclusions of this comparison, it has been proved that the fluctuating boundary condition requires much less computational cost, but some inaccuracies were found close to the nozzle. Also, both SGS models are capable to simulate this kind of jets with a co-flow stream with exactitude.This research was performed in the frame of the project "Estudio de la interaccion chorro-pared en condiciones realistas de motor" reference TRA2015-67679-c2-1-R from Ministerio de Economia y Competitividad (Spanish Ministry of Economy). The equipment used in this work has been partially supported by FEDER Project funds "Dotacion de infraestructuras cientifico tectinas para el Centro Integral de Mejora Energetica y Medioambiental de Sistemas de Transporte (CiMeT), (FEDER-ICTS-2012-06)", framed in the operation program of unique scientific and technical infrastructure of the Ministry of Science and Innovation of Spain. Jhoan S. Giraldo was supported by a research grant from Generalitat Valenciana (Programa Santiago Grisolia, GRISOLIA/2013/007).Payri Marín, R.; López Sánchez, JJ.; Marti-Aldaravi, P.; Giraldo Valderrama, JS. (2016). Effect of turbulent model closure and type of inlet boundary condition on a Large Eddy Simulation of a non-reacting jet with co-flow stream. International Journal of Heat and Fluid Flow. 61:545-552. https://doi.org/10.1016/j.ijheatfluidflow.2016.06.016S5455526

Pathological Characterization Of IFNAR(-/-) Mice Infected With Bluetongue Virus Serotype 4

Bluetongue virus (BTV) replicates in lymphoid tissues where infected mononuclear leukocytes secrete proinflammatory and vasoactive mediators that can contribute to bluetongue (BT) pathogenesis. Using the well-characterized IFNAR(-/-) mice animal model, we have now studied the histopathology and dynamics of leukocyte populations in different target tissues (spleen, thymus, and lung) during BTV-4 infection by histological and immunohistochemical techniques. The spleen and thymus of BTV-4 infected mice showed severe lymphoid depletion on H&E stained sections. This finding was confirmed by IHC, showing moderate decreased immunopositivity against CD3 in the thymus, and scarce immunoreactivity against CD3 and CD79 in the rest of the white pulp in the spleen, together with an increase in MAC387 immunostaining. BTV-4 infection also induced the expression of active caspase-3 in the spleen, where apoptotic debris was observed by H&E. A dramatic increase in iNOS immunoreactivity associated to necrotic areas of the white pulp was observed, being less noticeable in the thymus and the lung. The induction of pro-inflammatory cytokines in tissues where BTV replicates was evaluated by measuring transcript levels by RT-qPCR. BTV-4 infection led to enhance transcription of IFN-γ, TNF, IL-6, IL-12-p40, and IL-1β mRNA in the thymus, spleen and lung, correlating with the level of virus replication in these tissues. Disease progression and pathogenesis in IFNAR(-/-) mice closely mimics hallmarks of bluetongue disease in ruminants. IFNAR(-/-) mice are a good choice to facilitate a faster advance in the field of orbiviruses.This work was supported by grants from the Comisión Interministerial de Ciencia y Tecnología (CICYT) (AGL2011-23506 and AGL-2014-57430-R)S

Compact Modeling of Multi-layered MoS2 FETs including Negative Capacitance Effect

Abstract—In this paper, we present a channel thickness dependent analytical model for MoS2 symmetric double-gate FETs including negative capacitance (NC) effect. In the model development, first thickness dependent model of the baseline 2D FET is developed, and later NC effect is included in the model using the Landau-Khalatnikov (L-K) relation. To validate baseline model behavior, density functional theory (DFT) calculations are taken into account to obtain numerical data for the K and valley dependent effective masses and differences in the energy levels of N-layer (N = 1, 2, 3, 4, and 5) MoS2. The calculated layer dependent parameters using DFT theory are further used in a drift-diffusion simulator to obtain electric characteristics of the baseline 2D FET for model validation. The model shows excellent match for drain current and total gate capacitance of baseline FET and NCFET against the numerical simulation. Index Terms—Metal-oxide-semiconductor field-effect transistor (MOSFET), Compact modeling, molybdenum disulfide (MoS2), transition metal dichalcogenide (TMD), Double Gate (DG), Negative Capacitance FET (NCFET).Swarnajayanti FellowshipFIST Scheme of Department of Science and Technology (DST), Government of IndiaSpanish Government Grant FPU16/04043Juan de la Cierva Incorporación (MINECO/AEI) IJCI-2017-3229

Niveles de consanguinidad y sus efectos sobre la expresión fenotípica en ganado Holstein

The objective of the present study was to calculate the inbreeding levels in the Holstein population of Mexico and to evaluate their effect on the production of milk, fat, protein and final conformation points. The pedigree information was made up of 326,238 animals, to which inbreeding was calculated through the modified recursive algorithm (INBUPGF90). Inbreeding trends of animals born from 1990 to 2018 were obtained through a regression analysis, and the effect of inbreeding on productive characteristics was evaluated with an analysis of variances, for which phenotypic information from 68,779 animals was included. Six groups were formed according to the level of inbreeding (1= <1%, 2= ≥1 and <2%, 3= ≥2 and <3%, 4= ≥3 and <4%, 5= ≥4 and <5%, and 6≥ 5%). The results showed that, for each percentage point of increase in inbreeding, the production of milk, fat and protein decrease by 88, 3.16 and 2.57 kg (P<0.0001). At low levels of inbreeding (<5%), no effect on fat and protein production was detected. However, when inbreeding increased to more than 5 %, the loss in production was 12 kg of fat and 9 kg in protein. It was also observed that the animals with the lowest average conformation have low levels of inbreeding (<1%) and the highest levels did not show significant differences between them, which confirms that functional conformation is less sensitive to the effects of inbreeding than other characteristics of economic interest. It is recommended to promote selection programs based on optimal contributions to maximize genetic gains and control inbreeding levels.El objetivo del presente estudio fue calcular los niveles de consanguinidad en la población Holstein de México y evaluar su efecto sobre la producción de leche, grasa, proteína y puntos finales de conformación. La información de pedigrí constó de 326,238 animales, a los cuales se les calculó la consanguinidad a través del algoritmo recursivo modificado (INBUPGF90). Se obtuvieron tendencias de consanguinidad de animales nacidos de 1990 a 2018 a través de un análisis de regresión, y se evaluó el efecto de la consanguinidad sobre caracteres productivos con un análisis de varianzas, para lo cual se incluyó información fenotípica de 68,779 animales. Se formaron seis grupos de acuerdo al nivel de consanguinidad (1= <1%, 2= ≥1 y <2%, 3= ≥2 y <3%, 4= ≥3 y <4%, 5= ≥4 y <5%, y 6= ≥5%). Los resultados mostraron que, por cada punto porcentual de aumento en la consanguinidad, se disminuye la producción de leche, grasa y proteína en 88, 3.16 y 2.57 kg (P<0.0001). A niveles bajos de consanguinidad (<5%), no se detectó ningún efecto sobre la producción de grasa y proteína. Sin embargo, cuando la consanguinidad aumentó a más de 5%, la pérdida en producción fue de 12 kg de grasa y de 9 kg en proteína. También se observó que los animales con menor promedio de conformación, presentan bajos niveles de consanguinidad (<1%) y los niveles más elevados, no mostraron diferencias significativas entre ellos; lo que ratifica que la conformación funcional es menos sensible a los efectos de la consanguinidad que otras características de interés económico. Se recomienda promover programas de selección basados en contribuciones óptimas para maximizar las ganancias genéticas y controlar los niveles de consanguinidad