The group of strong Galois objects associated to a cocommutative Hopf quasigroup

Let H be a cocommutative faithfully flat Hopf quasigroup in a strict symmetric monoidal category with equalizers. In this paper we introduce the notion of (strong) Galois H-object and we prove that the set of isomorphism classes of (strong) Galois H-objects is a (group) monoid which coincides, in the Hopf algebra setting, with the Galois group of H-Galois objects introduced by Chase and Sweedler

Ultra High Resolution Transmission Electron Microscopy of Matrix Mineral Grains in CM Chondrites: Preaccretionary or Parent Body Aqueous Processing?

CM chondrites are highly hydrated meteorites associated with a parent asteroid that has experienced significant aqueous processing. The meteoritic evidence indicates that these non-differentiated asteroids are formed by fine-grained minerals embedded in a nanometric matrix that preserves chemical clues of the forming environment. So far there are two hypothesis to explain the presence of hydrated minerals in the content of CM chondrites: one is based on textural features in chondrule-rim boundaries [1-3], and the other ‘preaccretionary’ hypothesis proposes the incorporation of hydrated phases from the protoplanetary disk [4-6]. The highly porous structure of these chondrites is inherited from the diverse materials present in the protoplanetary disk environment. These bodies were presumably formed by low relative velocity encounters that led to the accretion of silicate-rich chondrules, refractory Ca- and Al-rich inclusions (CAIs), metal grains, and the fine-grained materials forming the matrix. Owing to the presence of significant terrestrial water in meteorite finds [7], here we have focused on two CM chondrite falls with minimal terrestrial processing: Murchison and Cold Bokkeveld. Anhydrous carbonaceous chondrite matrices are usually represented by highly chemically unequilibrated samples that contain distinguishable stellar grains. Other chondrites have experienced hydration and chemical homogeneization that reveal parent body processes. We have studied CM chondrites because these meteorites have experienced variable hydration levels [8-10]. It is important to study the textural effects of aqueous alteration in the main minerals to decipher which steps and environments promote bulk chemistry changes, and create the distinctive alteration products. It is thought that aqueous alteration has particularly played a key role in modifying primordial bulk chemistry, and homogenizing the isotopic content of fine-grained matrix materials [7, 11, 12]. Fortunately, the mineralogy produced by parent-body and terrestrial aqueous alteration processes is distinctive [5, 11]

Ancient Martian Floods in a Plausible Variable Climatic Environment as Revealed from the Sequential Growth of Allan Hills 84001 Carbonate Globules

No abstract available

Aportaciones al conocimiento de la estructura del sinclinorio de Verín

Resumen] Los materiales precámbricos, ordovícicos y silúricos del Sinclinorio de Ver!n están afectados por una deformación polifásica, acompañada de un metamorfismo regional de presión intermedia-baja durante el hercínico. Los datos estructurales obtenidos indican una disposición subhorizontal para la esquistosidad primaria, en toda la sucesión metasedimentaria, antes de ser afectada por las fases posteriores. Este hecho, difiere de lo considerado anteriormente en el sentido de la existencia de una importante fase de deformación a comienzos del Silúrico, atestiguada por la existencia de una esquistosidad primaria en abanico, a escala del sinclinorio, afectando únicamente a los materiales presilúricos. La verticalización de la esquistosidad primaria en los flancos del sinclinorio, sus suaves buzamientos en el sector S de la zona de charnela central y el desarrollo de una esquistosidad de crenulación muy.penetrativa en el sector N de la misma, son hechos explicables teniendo en cuenta el papel que ha jugado el basamento granítico irregular y el macizo básico de Braganza su-oprayacente.[Abstract] The precambrian, ordovician and silurian materials outcropping in the Verín sinclyne have undergone the effects of a poliphase deformation during the Hercynian cycle. The deformation is synchronous with an intermediate low pressure type regional metamorphism. The existence of·a pre-silurian deformation phase is discarded. It is shown that the sttitude of the cleavages within the sinclyne is controlled by the irregular granitic basement and the overlying Braganza massi

Managerialism and fiction, or the fiction of managerialism: From Ayn Rand to novels for executives

The aim of management books is to propagate new theories in the field among company executives. Such publications are one of the pillars of managerialism. Perhaps the oddest manifestation of the phenomenon is novels focussing on senior executives heroically battling for business excellence through the application of a managerial technique. In this paper, we put this curious, rarely-explored literary genre under the spotlight. We not only analyse the salient features of such literature and its main ingredients but also highlight the major stylistic influence of Ayn Rand's works. The novels of this influential neo-Liberal writer foreshadowed the new narrative form.Los libros sobre management tienen como objetivo propagar nuevas teorías de gestión entre los directivos y ejecutivos de las empresas, y representa uno de los pilares del gerencialismo. Una de sus manifestaciones más peculiares es la ficción, esto es, novelas que se centran en historias de profesionales de corporaciones en las que estos tratan de alcanzar la excelencia en los negocios mediante una técnica gerencial. Este artículo se centra en este género literario peculiar y poco explorado. Se analizan sus características y se describen sus elementos más significativos, además de destacar la importante influencia estilística de las novelas de la escritora neoliberal Ayn Rand, auténtica precursora de este tipo de narrativ

Advanced architectural descriptors in foams: novel 3D computational methods

This work presents 3D computational strategies aimed at providing foam de-structuration of the basic components of a cellular material (struts and cell walls) offering the possibility of analysing separately the structural elements that play an important role in the physical properties of thee materials. Two different methodologies have been used depending on the topological similarities existing between the struts and cell walls: 3D erosion-dilation procedure (thick struts) and solid classification algorithm (thin struts). In a second step, analysis of cell walls is performed in order to show the advantages of analysing separately the two foams components. Particularly, cell wall thickness distribution reveals differences that could not be found prior to the de-structuration

Debt and sacrifice: the role of scapegoats in the economic crises

Despite the process of secularization and modernization, in contemporary societies, the role of sacrifice is still relevant. One of the spaces where sacrifice actually performs a critical role is the realm of modern economy, particularly in the event of a financial crisis. Such crises represent situations defined by an outrageous symbolic violence in which social and economic relations experience drastic transformations, and their victims end up suffering personal bankruptcy, indebt-edness, lower standards of living or poverty. Crises show the flagrant domination present in social relations: this is proven in the way crises evolve, when more and more social groups marred by a growing vulnerability are sacrificed to appease financial markets. Inspired by the theoretical framework of the French anthropologist René Girard, our intention is to explore how the hegemonic nar-rative about the crisis has been developed, highlighting its sacrificial aspects.This research was funded by the Spanish Ministry of Science and Innovation, grant number PGC2018-097200-B-I00