Finite size effects in ferromagnetic spin chains and quantum corrections to classical strings

N=4 supersymmetric Yang-Mills operators carrying large charges are dual to semiclassical strings in AdS_5xS^5. The spectrum of anomalous dimensions of very large operators has been calculated solving the Bethe ansatz equations in the thermodynamic limit, and matched to energies of string solitons. We have considered finite size corrections to the Bethe equations, that should correspond to quantum effects on the string side.Comment: 18 pages. Latex. v2: Misprints corrected, expanded discussions with comments on end point effects, and updated referenc

Extension of the Theory of Planned Behavior to predict the intention to consume insect-based products : The moderating effect of food neophobia

Treballs Finals del Màster de Recerca en Empresa, Facultat d'Economia i Empresa, Universitat de Barcelona, Curs: 2016-2017, Tutor: Josep Maria Argilés BoschThe purpose of this paper is to investigate the determinants of the adoption of insectbased products in the province of Barcelona. The aim is to explain the effect of attitude, subjective norm and perceived behavioral control on consumption intention towards insect-based products. Since insect-based products are a novel food, and thus it is unfamiliar, relatively as compared to conventional food, food neophobia will be incorporated into the model to assess its moderation effect

Metamorphosis of the Modern: the Greco in the Poetry between Ages

El presente artículo analiza la presencia del Greco en la literatura hispánica de entresiglos y, más concretamente, en la poesía modernista. Su aportación más característica es el poema breve que realiza una écfrasis de un retrato del Greco, siguiendo, con mayor o menor fidelidad la manera parnasiana. El óleo casi siempre representado es El caballero de la mano al pecho. En segundo lugar, otro tipo de poema es el que trata de sugerir el misterio de la ciudad de Toledo, donde El Greco aparece como ingrediente indispensable. Otras apariciones del pintor son su empleo comparativo o su consideración como elemento decadente y grotesco, característico de una “España negra”.This paper analyses the presence of El Greco in Hispanic literature at the turn of the century and, in particular, in the modernist poetry. Its most distinctive contribution is a type of short poem that makes an ekphrasis of a portrait by El Greco and follows, more or less accurately, the Parnassian manner. The most represented painting is El caballero de la mano al pecho. Secondly, other poems try to suggest the mystery of the city of Toledo, where El Greco appears as an essential element. Other appearances of the painter include being used as a comparative or its conception as a decadent and grotesque characteristic of “la España negra”

Integrated geomechanics and geological characterization of the Devonian-Mississippian Woodford Shale

Thesis (M.S.)--University of Oklahoma, 2011.Includes bibliographical references (leaves 91-101).In this thesis, preserved Woodford Shale samples of different mineralogy compositions were obtained from a shallow research well in Oklahoma and prepared for various laboratory mechanical characterizations including the Ultrasonic Pulse Velocity (UPV) measurements, the unconfined compressive test, and the Inclined Direct Shear Testing Device (IDSTD™). In addition, the Woodford Shale fracture propertie, including anisotropic tensile strength and fracture toughness, were investigated through a suite of Brazilian Tensile and Chevron tJotched Semicircular Bend (CNSCB) tests with acoustic emission (AE) recorded during testing. The geomechanics characteristics of the Woodford Shale were modeled with correlation to mineralogy and micro-fabric on its effects on the mechanical properties were also studied with results from thin sections and XRD analysis performed on tested samples. The UPV and Brazilian test results show a clear anisotropic nature of Woodford Shale poroelastic properties and tensile strength. Investigations on the effects of shale mineralogy and morphology on its anisotropic mechanical properties show correlation between the degrees of anisotropy with clay packing density variation. Despite the limited number of tests reported, an increasing trend of Woodford Shale tensile strength with carbonate content could be observed. This proportional increase of tensile strength with carbonate content may suggest the strength-increasing nature of carbonate minerals in the Woodford Shale. CNS CB test results showed that the fracture toughness of the quartz-rich Upper Woodford samples is significantly higher (up to 57%) than the fracture toughness of samples from the more clay-rich Middle and Lower Woodford. This will lead to a lot of variability in hydraulic fracture planning and design. Also, the acoustic emissions prior to the fracture propagation in CNSCB tests could only be observed for the lower clay samples belonging to the Upper Woodford. Furthermore, the integration of these results with the previously defined sequence stratigraphic framework resulted in the definitions of brittle and ductile couplets at the parasequence scale, which might be valuable for well placement and completion designs

Analysis of the offensive tactical situations used by the Spanish men handball team in numerical inequality during the European Championships of Serbia 2012 and Denmark 2014

El objetivo de este trabajo es identificar y analizar las situaciones tácticas ofensivas de la selección española masculina de balonmano en desigualdad numérica, determinando la eficacia táctica y la relevancia de cada situación en los Campeonatos de Europa de Serbia 2012 y de Dinamarca 2014. El análisis se llevó a cabo mediante una metodología observacional. Se registraron las situaciones en inferioridad y en superioridad por separado, anotando el tiempo de desigualdad, la situación táctica ejecutada, su eficacia táctica y su resultado En inferioridad numérica, se utilizaron más situaciones tácticas en 2014 que en 2012 siendo las principales el cruce de extremos, el desdoblamiento del extremo, las fijaciones de la primera línea combinadas con desmarques del pivote y el cruce lateral con extremo. En superioridad numérica se utilizaron el mismo número de situaciones en los dos europeos, siendo las principales el desdoblamiento del central y las fijaciones con pivote entre los defensores central y lateral. En 2014 se combinaron situaciones nuevas con algunas ya utilizadas en 2012. La eficacia táctica fue similar en ambos campeonatos.The aim of this work is to identify and to analyze the offensive tactical situations used by the Spanish men handball team in numerical inequality, determining tactical efficiency and tactical relevance in each situation during the European Championships of Serbia 2012 and Denmark 2014. This process was carried out by an observational methodology. Inferiority and superiority situations were analyzed separately, registering the inequality period, the tactical situation played, its tactical efficiency and its result. In numerical inferiority, more situations were taken in 2014 than in 2012, being the main ones the wing crossing, the wing sweeping, the moves combined between the first line players and the line player and the crossing between back and wing players. In numerical superiority, the same number of situations was taken in the two championships, being the main ones the playmaker sweeping and the first line moves with pivot player positioned between the second and third defenders. In 2014 new situations were combined with old ones already used in 2012. Tactical efficiency was similar in both championships.peerReviewe

Molecular mechanisms of acquired resistance to tyrosine kinase targeted therapy

In recent years, tyrosine kinases (TKs) have been recognized as central players and regulators of cancer cell proliferation, apoptosis, and angiogenesis, and are therefore considered suitable potential targets for anti-cancer therapies. Several strategies for targeting TKs have been developed, the most successful being monoclonal antibodies and small molecule tyrosine kinase inhibitors. However, increasing evidence of acquired resistance to these drugs has been documented, and extensive preclinical studies are ongoing to try to understand the molecular mechanisms by which cancer cells are able to bypass their inhibitory activity. This review intends to present the most recently identified molecular mechanisms that mediate acquired resistance to tyrosine kinase inhibitors, identified through the use of in vitro models or the analysis of patient samples. The knowledge obtained from these studies will help to design better therapies that prevent and overcome resistance to treatment in cancer patients

Linking cosmic ray intensities to cutoff rigidity through multifractal detrented fluctuation analysis

We use multifractal detrented fluctuation analysis (MFDFA) to investigate the relationship between magnetic rigidity or ”cutoff rigidity” and the variability and multifractal behavior in the time series of the cosmic ray flux on Earth, which is detected by neutron monitors on the Earth's surface. Because the cutoff rigidity depends strongly on the geographical latitude of the detectors, not all detectors produce equal cosmic ray counts. Our results indicate that there is some bias in the chaotic nature of the cosmic ray series associated with the latitude of the monitoring stations. We obtain an important relationship between the cutoff rigidity (R) for different behaviors and the Hurst exponent of the series corresponding to the counts at the neutron monitor stations. In particular, an inverse relationship is observed with higher rigidity corresponding to a lower Hurst exponent (H(q=a)=maR+Ba). In particular, for q=−10, considering all time series, the correlation coefficient is approximately 0.80, whereas the R-squared is 0.638, and the coefficients of the linear regression for this case are m=−0.0425±0.006 and b=0.8703±0.025. © 2022 Elsevier B.V

Finite size effects in ferromagnetic spin chains and quantum corrections to classical strings

N = 4 supersymmetric Yang-Mills operators carrying large charges are dual to semiclassical strings in AdS5 × S 5 . The spectrum of anomalous dimensions of very large operators has been calculated solving the Bethe ansatz equations in the thermodynamic limit, and matched to energies of string solitons. We have considered finite size corrections to the Bethe equations, that should correspond to quantum effects on the string side

‘Visión de Sevilla’ de Miguel Hernández: guerra y tradición lírica

Este artículo analiza el funcionamiento estético, retórico y didáctico del poema de Miguel Hernández 'Visión de Sevilla', de Viento del pueblo , en su contexto belico, político e histórico. La composición se suma a la propaganda republicana contra Queipo de Llano a la vez que muestra la vitalidad del árbol de la tradición intertextual, desde los romances moriscos a los escritos en la Guerra Civil española, de Federico García Lorca a Pascual Pla y Beltrán