Quantum Moment Map and Invariant Integration Theory on Quantum Spaces

It is shown that, on the one hand, quantum moment maps give rise to examples for the operator-theoretic approach to invariant integration theory developed by K.-D. Kürsten and the second author, and that, on the other hand, the operator-theoretic approach to invariant integration theory is more general since it also applies to examples without a well-defined quantum moment map

Soluciones periódicas para un modelo de población celular sujeto a una radiación periódica general

En este trabajo consideramos modelos con tratamiento de radiaciónperiódico contra el cáncer que describen la dinámica de las poblaciones celulares en un tumor. Establecemos la existencia de órbitas periódicas, utilizandola teoría de los sistemas cooperativos. Damos condiciones suficientes parala unicidad de la solución periódica, también para que esta sea un atractorglobal. Realizamos simulaciones numéricas utilizando funciones de radiaciónespecíficas para ilustrar nuestros resultados analíticos.In this work, we considered models with periodic radiation can-cer treatment which describe the dynamics of cell populations in a tumor.This may also be used to consider dynamics of healthy tissue under periodic radiation exposure. We establish the existence of periodic orbits, byusing theory of cooperative systems. We give sufficient conditions for theuniqueness of the periodic solution which then becomes a global attractor.Numerical simulations are performed using specific radiation functions to illustrate our analytical findings

Knocking down some assumptions about the effectos of evaluation systems on publications

In 1989 the Spanish Government established an individual retrospective research evaluation system (RES) for public researchers. This system was voluntary but involved the incentive of a permanent salary bonus. Policy makers have associated the establishment of this evaluation system with the signifi cant increase in the volume of scientifi c publications attributed to Spain over the last decades. In a similar vein to the analyses of other country cases, some scholars have also claimed that the growth of Spain’s international scientifi c publications is a result of the establishment of the new evaluation system. In this paper, we provide a methodological revision of the validity threats in previous research, including some interrupted time series analyses and control groups to investigate the effects of this policy instrument on the number of papers produced by Spanish authors. In the years following the establishment of the evaluation system, the results indicate a considerable increase in the number of papers attributed to Spanish authors among those eligible for evaluation (the “treated” group), but also in the control publications cannot be attributed indisputably to the effect of the establishment of the RES, but rather to the increase of expenditure and number of researchers in the Spanish R&D system along with some maturation effects. We take this case as an example of the need to improve and refi ne methodologies and to be more cautious when attributing effects to research evaluation mechanisms at the national level.Peer reviewe

La autoficción entre los géneros literarios y periodísticos : representación de la violencia en Chicas muertas de Selva Almada

El objetivo del presente artículo es analizar las formas discursivas que atraviesan las fronteras de los géneros literarios y periodísticos para forjar nuevas narrativas sobre la violencia machista y sus efectos. En Chicas muertas de Selva Almada el cruce entre géneros surge como un recurso eficiente que contribuye en la humanización de las víctimas de feminicidio. Mediante una narradora que vive de cerca el sufrimiento de quienes padecen la violencia contra las mujeres y buscan dar voz y visibilidad a los casos, sus descripciones se empeñan en la configuración de personajes con un rostro, un nombre y una historia.L'objectiu del present article és analitzar les formes discursives que travessen les fronteres dels gèneres literaris i periodístics per a forjar noves narratives sobre la violència masclista i els seus efectes. En Chicas muertas de Selva Almada l'encreuament entre gèneres sorgeix com un recurs eficient que contribueix a la humanització de les víctimes de feminicidi. Mitjançant una narradora que viu de prop el sofriment dels qui pateixen la violència contra les dones i busquen donar veu i visibilitat als casos, les seves descripcions s'obstinen en la configuració de personatges amb un rostre, un nom i una història.The objective of this article is to analyze the discursive forms that cross the borders of literary and journalistic genres to create new narratives about sexist violence and its effects. In Selva Almada's Chicas muertas, the crossover between genres emerges as an efficient resource that contributes to the humanization of victims of femicide. Through a narrator who lives closely the suffering of those who suffer violence against women and seeks to give voice and visibility to their cases, her descriptions insist on the configuration of characters with a face, a name and a story

Conductividad eléctrica en función de la temperatura de compuestos de 3YTZP con nano-plaquetas de grafeno

En este proyecto se ha estudiado la conductividad eléctrica y su dependencia con la temperatura en compuestos cerámicos de circona con 3%mol de itria (3YTZP, Yttria Tetragonal Zirconia Polycrystals) con tres contenidos distintos de nano-plaquetas de grafeno (GNPs, Graphene Nano Platelets), todas ellas (5, 10, 20%vol. de GNPs), por encima del límite de percolación eléctrica. Estos compuestos fueron sometidos a presión uniaxial durante la sinterización, por lo que el estudio se ha realizado en dos direcciones: la perpendicular y la paralela al eje de presión durante sinterización. En primer lugar, se ha realizado un análisis de la conductividad eléctrica a temperatura ambiente de estos compuestos donde se ha puesto de manifiesto la anisotropía eléctrica de los compuestos, reflejada en el factor de anisotropía eléctrica . La dependencia de la conductividad eléctrica con el contenido de GNPs se ha modelado mediante la regla de las mezclas obteniéndose un parámetro de conectividad de las fases (n), el cual sólo depende de la dirección en la que se mide la conductividad, siendo independiente de la cantidadde GNPs. En segundo lugar, se ha llevado a cabo el estudio de la conductividad eléctrica en función de la temperatura para estos compuestos mediante espectroscopía de impedancia compleja para determinar los distintos comportamientos (tipo metálico o semiconductor) que poseen los compuestos en función de la cantidad de GNPs y la dirección en la que se mida laconductividad . Se ha obtenido un comportamiento tipo semiconductor en algunos casos y en otros, el comportamiento es de tipo metálico. El comportamiento de tipo semiconductor se ha modelado utilizando el modelo bidimensional de salto de rango variable (2D-VRH, Two Dimensional Variable Range Hopping). Finalmente, haciendo uso de la espectroscopía Raman se ha puesto de manifiesto que no se han producido daños estructurales en las GNPs al someterlas a altas temperaturas (hasta 450℃). Haciendo un estudio de las bandas características de los espectros se ha puesto de manifiesto la anisotropía estructural de los compuestos, indicando una mayor cantidad de defectos en las secciones transversales de los compuestos .Universidad de Sevilla. Grado en Físic

Treatment of halogenated organic compounds and monitoring of microbial dynamics in up-flow fixed bed reactors under sequentially alternating pollutant scenarios

Two up-flow fixed bed reactors (UFBR) were operated for 8 months treating a model synthetic wastewater containing 2-fluorobenzoate (2-FB) and dichloromethane (DCM). The stability of the reactors under dynamic conditions, that is, sequentially alternating pollutants (SAP), shock loads, and starvation periods was assessed. Two support materials were used: expanded clay (EC) that does not adsorb 2-FB or DCM, and granular-activated carbon (GAC) that adsorbs 180 mg gg⁻¹ of 2-FB and 390 mg gg⁻¹ of DCM. The reactors were inoculated with a 2-FB-degrading strain (FB2) and a DCM degrader (TM1). 2-FB was fed at organic loads ranging from 0 to 800 mg L⁻¹ d⁻¹, while DCM was fed at 0–250 mg L⁻¹ d⁻¹. 2-FB or DCM were never detected at the outlet of the GAC reactor, while in the EC reactor outlet small amounts were observed. Nevertheless, the highest biological elimination capacity was observed in the EC reactor (over 700 mg L⁻¹ d⁻¹ of 2-FB). DGGE analysis revealed a fairly stable bacterial community with the largest shifts occurring during starvation periods and changes in feed composition. Several bacterial strains isolated from the reactors showed capacity for 2-FB degradation, while only strain TM1 degraded DCM

Biotreatment of industrial wastewaters under transient-state conditions: process stability with fluctuations of organic load, substrates, toxicants, and environmental parameters

Biotreatment of industrial wastewater is often challenged by operation under transient states with respect to organic loads, pollutants, and physical characteristics. Furthermore, the potential presence of inhibitory compounds requires careful monitoring and adequate process design. This review describes difficulties encountered in biological treatment of wastewater with highly variable influent characteristics. Typical design aspects of biological processes are presented and discussed with respect to their success in treating highly fluctuating wastewaters. In general, biomass retention is a key factor for dealing with highly fluctuating and/or inhibitory wastewater, but the how it operates also affects the stability of performance, as it was shown that dynamic operation instead of operation at a constant flow enhances biodegradation onset and more evenly distributed activity. Although ultimately stable effluent quality must be achieved, the microbial population stability is not necessarily high, as it was shown that microbial diversity and flexibility may play a critical role in functional stability.info:eu-repo/semantics/acceptedVersio

Influence of Quaternary Benzophenantridine and Protopine Alkaloids on Growth Performance, Dietary Energy, Carcass Traits, Visceral Mass, and Rumen Health in Finishing Ewes under Conditions of Severe Temperature-humidity Index.

Twenty Pelibuey×Katahdin ewes (35±2.3 kg) were used to determine the effects of the consumption of standardized plant extract containing a mixture of quaternary benzophenanthridine alkaloids and protopine alkaloids (QBA+PA) on growth performance, dietary energetics, visceral mass, and ruminal epithelial health in heat-stressed ewes fed with a high-energy corn-based diet. The basal diet (13.9% crude protein and 2.09 Mcal of net energy [NE] of maintenance/kg of dry matter) contained 49.7% starch and 15.3% neutral detergent fiber. Source of QBA+PA was Sangrovit RS (SANG) which contains 3 g of quaternary benzophenathridine and protopine alkaloids per kg of product. Treatments consisted of a daily consumption of 0 or 0.5 g SANG/ewe. Ewes were grouped by weight and assigned to 10 pens (5 pens/treatment), with two ewes per pen. The experimental period lasted 70 days. The mean temperature humidity index during the course of this experiment was 81.7±1.0 (severe heat stress). There were no treatment effects on water intake. Dry matter intake was not affected (p = 0.70) by treatments, but the group fed SANG had a numerically (11.2%) higher gain in comparison to the control group, SANG improved gain efficiency (8.3%, p = 0.04), dietary NE (5.2%, p<0.01) and the observed-to-expected NE (5.9%, p<0.01). Supplemental SANG did not affect (p≥0.12) carcass characteristics, chemical composition of shoulder, and organ weights (g/kg empty body weight) of stomach complex, intestines, and heart/lung. Supplemental SANG decreased liver weight (10.3%, p = 0.02) and increased visceral fat (16.9%, p = 0.02). Rumen epithelium of ewes fed SANG had lower scores for cellular dropsical degeneration (2.08 vs 2.34, p = 0.02), parakeratosis (1.30 vs 1.82, p = 0.03) and neutrophil infiltration (2.08 vs 2.86, p = 0.05) than controls. It is concluded that SANG supplementation helped ameliorate the negative effects of severe heat on growth performance of feedlot ewes fed high-energy corn-based diets. Improvement in energetic efficiency may have been mediated, in part, by anti-inflammatory effects of supplemental SANG and corresponding enhancement of nutrient uptake