The morphofunctional implications of the glenoid labrum of the glenohumeral joint in hominoids

Objectives: a morphocline of the glenoid cavity has been used to infer differences in locomotor behaviors; however, the glenoid cavity is surrounded by the glenoid labrum, a fibrocartilaginous structure that could influence the functionality of the glenoid. The objectives of this study are to explore the effects of the glenoid labrum on the area, depth, and morphology of the glenoid cavity in primates. - Materials and Methods : photogrammetry was used to build 3D models of the glenoid, with and without the labrum, and three- (3D) and two-dimensional (2D) geometric morphometrics (GM) was applied. 2D areas were collected from zenithal images for glenoids with and without labrum to evaluate the availability of articular surface area. - Results: in the 2D GM the morphocline is present in the dry-bone sample but not with the presence of the glenoid labrum. In the 3D GM there are differences between species mainly concerning the depth of the glenoid cavity. 2D areas reveal that the amount of articular area of the glenoid cavity increases with the presence of the labrum, particularly in humans. - Discussion: the glenoid labrum changes the shape, increases the depth and the surface area of the glenoid cavity, particularly in humans. Therefore, the glenoid labrum might hold a functional role, increasing the stability of the glenohumeral joint of primates in general, and especially in humans

Fuentes de información en Políticas y Sociología. Plan de formación de doctores

Presentació dels principals recursos digitals en ciències polítiques i sociologia que es poden consultar a la UAB: cercador (catàleg UAB i biblioteca digital), revistes i llibres digitals, bases de dades especialitzades i d'altres multidisciplinars, tesis doctorals i altres eines i recursos d'especial interès (dipòsits digitals, serveis de referència, etc.

The radial head of the Middle Miocene ape Nacholapithecus kerioi : Morphometric affinities, locomotor inferences, and implications for the evolution of the hominoid humeroradial joint

Altres ajuts: CERCA Programme/Generalitat de Catalunya and Margarita Salas postdoctoral fellowship funded by the European Union-NextGenerationEU to A.U

Decapitation in the long-necked Triassic marine reptile Tanystropheus

Altres ajuts: CERCA Programme/Generalitat de CatalunyaExtreme neck elongation was a common evolutionary strategy among Mesozoic marine reptiles, occurring independently in several lineages1,2. Despite its evolutionary success, such an elongate neck might have been particularly susceptible to predation1, but direct evidence for this possibility has been lacking. Composed of only 13 hyperelongate vertebrae and associated strut-like ribs, the configuration of the long neck of the Triassic archosauromorph Tanystropheus is unique among tetrapods. It was probably stiffened and used to catch prey through an ambush-strategy2. Here, we show that the neck was completely severed in two Tanystropheus specimens (Figure 1), most likely due to a predatory attack, providing vivid evidence of predator-prey interactions among Mesozoic marine reptiles that are rarely preserved in the fossil record. The recurring incidence of decapitation suggests that the elongate neck was a functional weak spot in Tanystropheus, and possibly the long-necked marine reptile bauplan more generally

Number of limit cycles for planar systems with invariant algebraic curves

For planar polynomials systems the existence of an invariant algebraic curve limits the number of limit cycles not contained in this curve. We present a general approach to prove non-existence of periodic orbits not contained in this given algebraic curve. When the method is applied to parametric families of polynomial systems that have limit cycles for some values of the parameters, our result leads to effective algebraic conditions on the parameters that force non-existence of the periodic orbits. As applications we consider several families of quadratic systems: the ones having some quadratic invariant algebraic curve, the known ones having an algebraic limit cycle, a family having a cubic invariant algebraic curve and other ones. For any quadratic system with two invariant algebraic curves we prove a finiteness result for its number of limit cycles that only depends on the degrees of these curves. We also consider some families of cubic systems having either a quadratic or a cubic invariant algebraic curve and a family of Liénard systems. We also give a new and simple proof of the known fact that quadratic systems with an invariant parabola have at most one limit cycle. In fact, what we show is that this result is a consequence of the similar result for quadratic systems with an invariant straight line

Distillation of secret key and GHZ states from multipartite mixed states

We consider two related problems of extracting correlation from a given multipartite mixed quantum state: the first is the distillation of a conference key when the state is shared between a number of legal players and an eavesdropper; the eavesdropper, apart from starting off with this quantum side information, also observes the public communication between the players. The second is the distillation of Greenberger-Horne-Zeilinger (GHZ) states by means of LOCC from the given mixed state. These problem settings extend our previous paper [FS & AW, IEEE Trans. Inf. Theory 68(2):976-988, 2022], and we generalise its results: using a quantum version of the task of communication for omniscience, we derive a novel lower bound on the distillable secret key from any multipartite quantum state by means of a so-called non-interacting communication protocol. Secondly, by making the secret key distillation protocol coherent, we derive novel lower bounds on the distillation rate of GHZ states. Full details in the long version [1]

On the limit cycles of the piecewise differential systems formed by a linear focus or center and a quadratic weak focus or center

While the limit cycles of the discontinuous piecewise differential systems formed by two linear differential systems separated by one straight line have been studied intensively, and up to now there are examples of these systems with at most 3 limit cycles. There are almost no works studying the limit cycles of the discontinuous piecewise differential systems formed by one linear differential system and a quadratic polynomial differential system separated by one straight line. In this paper using the averaging theory up to seven order we prove that the discontinuous piecewise differential systems formed by a linear focus or center and a quadratic weak focus or center separated by one straight line can have 8 limit cycles. More precisely, at every order of the averaging theory from order one to order seven we provide the maximum number of limit cycles that can be obtained using the averaging theory

Policías locales. Jubilación. La regulación de la jubilación "anticipada" de los policías locales

El objetivo de este trabajo es analizar el alcance de la nueva regulación de la anticipación de la edad ordinaria de la jubilación de los miembros de los cuerpos de policía local. Esta nueva vía de jubilación se encuentra regulada en el reciente Real Decreto 1449/2018.The objective of this paper is to analyze the scope of the new regulation of the anticipation of the ordinary retirement age of the members of the local police forces. This new retirement path is regulated in the recent Royal Decree 1449/201

La traducción al chino de las poetas de la Generación del 27

Treball acceptat per publicar al proper volum 65 de la revista "Onomázein : Revista de Lingüística, Filología y Traducción" al tercer trimestre de 2024.Desde la campaña de Reforma y apertura iniciada en China en 1978, se ha despertado en este país el interés por la poesía española y han sido publicadas numerosas antologías poéticas. Sin embargo, la poesía femenina, muy destacable en el conjunto de la producción poética española, no había sido recopilada de manera sistemática hasta la publicación en 2001 de Antología de la poesía femenina española del siglo XX, obra del traductor Zhao Zhenjiang. El presente artículo se centra en cinco poetas españolas de la Generación del 27 incluidas en dicha antología y analiza las normas y las técnicas aplicadas en el proceso traductor.Since China's economic reform in 1978, people's interest in Spanish poetry has begun to awake and a large number of anthologies of poems have been published. However, female poetry, which has attracted worldwide attention in Spanish poetry creation, was not systematically compiled until 2001 when the translator Zhao Zhenjiang's Anthology of Spanish Female Poetry in the 20th Century was published. This paper focuses on five Spanish poetesses of the 27 Generation included in this collection of poems, and analyzes the principles and techniques used in the process of translatio

Recensiones

Obra ressenyada: AA.VV. (GUTIÉRREZ GILSANZ, Andrés, dir.). Derecho preconcursal y concursal de sociedades mercantiles de capital. Madrid : La Ley, 201