La revelación como "Locuto Dei" en la obra de Santo Tomás

El estudio de la Revelación entonca con la más antigua tradición teológica y, al mismo tiempo, hace frente a las preguntas que en nuestros tiempos se plantean sobre la naturaleza de nuestro conocimiento de Dios, su origen, relaciones entre fe y razón, etc. El estudio de esta acción de Dios reveladora, sin entrar en la consideración detallada de lo que El nos ha dicho, se presenta con cierto carácter de tema básico para la teología, especialmente por resaltar el origen divino y el carácter sobrenatural de la doctrina cristiana, enseñada por la Iglesia, acogida por la fe, contenida en la Sagrada Escritura y en la Tradición divina

Discretization-related issues in the KPZ equation: Consistency, Galilean-invariance violation, and fluctuation--dissipation relation

In order to perform numerical simulations of the KPZ equation, in any dimensionality, a spatial discretization scheme must be prescribed. The known fact that the KPZ equation can be obtained as a result of a Hopf--Cole transformation applied to a diffusion equation (with \emph{multiplicative} noise) is shown here to strongly restrict the arbitrariness in the choice of spatial discretization schemes. On one hand, the discretization prescriptions for the Laplacian and the nonlinear (KPZ) term cannot be independently chosen. On the other hand, since the discretization is an operation performed on \emph{space} and the Hopf--Cole transformation is \emph{local} both in space and time, the former should be the same regardless of the field to which it is applied. It is shown that whereas some discretization schemes pass both consistency tests, known examples in the literature do not. The requirement of consistency for the discretization of Lyapunov functionals is argued to be a natural and safe starting point in choosing spatial discretization schemes. We also analyze the relation between real-space and pseudo-spectral discrete representations. In addition we discuss the relevance of the Galilean invariance violation in these consistent discretization schemes, and the alleged conflict of standard discretization with the fluctuation--dissipation theorem, peculiar of 1D.Comment: RevTex, 23pgs, 2 figures, submitted to Phys. Rev.

Perfiles de identidad en ovinos de raza Chamarita

publishedTomo I . Sección: Sistemas Ganaderos-Economía y Gestión. Sesión: Economía II. Ponencia nº 1

Phase transition in the Sznajd model with independence

We propose a model of opinion dynamics which describes two major types of social influence -- conformity and independence. Conformity in our model is described by the so called outflow dynamics (known as Sznajd model). According to sociologists' suggestions, we introduce also a second type of social influence, known in social psychology as independence. Various social experiments have shown that the level of conformity depends on the society. We introduce this level as a parameter of the model and show that there is a continuous phase transition between conformity and independence

Impact of soft-hydrothermal pre-treatments on the olive mill solid waste characteristics and its subsequent amaerobic digestion

The aim of this study was to investigate the effect of a soft-hydrothermal pre-treatment (SHP) on olive mill solid waste (OMSW) and its subsequent anaerobic digestion (AD). OMSW was pre-treated in an autoclave at temperatures of 121 ºC and 133 ºC and excess pressures of 1.1 and 2.1 bars, respectively at heating times of 15, 20 and 30 minutes. The digestibility of pre-treated and untreated OMSW was determined in terms of methane potential through using biochemical methane potentials tests (BMP). An important solubilisation of high valuable compounds such us hydroxytyrosol, and 3,4-dihydroxyphenylglycol was observed after pre-treatments. SHP showed a significant reduction on fiber length and width (p < 0.05). A higher polysaccharides solubilisation was observed in treatment at 121 ºC comparing with that observed at 133 ºC. SHP carried out at 121 ºC, 1.1 bar (30 min) (pre-treatment A1), allowed obtaining the highest methane yield (380 ± 5 mL CH4/g VS), which was 12.3% higher than that obtained for untreated OMSW. Pearson correlation (PEC) and Principal Component Analysis (PCA) were carried out. PEC showed a positive correlation with phenol vanillic acid and PCA grouped pre-treatment A1 with polysaccharides solubilization. The influence of the SHP conditions on the AD of OMSW was assessed through the monitoring of process performance and calculation of kinetic parameters by using the Transference Function model

Consumer Attitudes Toward Animal Welfare-Friendly Products and Willingness to Pay: Exploration of Mexican Market Segments

The study aim was to identify consumer segmentation based on nonhuman animal welfare (AW) attitudes and their relationship with demographic features and willingness to pay (WTP) for welfare-friendly products (WFP) in Mexico. Personal interviews were conducted with 843 Mexican consumers who stated they purchased most of the animal products in their home. Respondents were selected using a quota sampling method with age, gender, education, and origin as quota control variables. The multivariate analysis suggested there were three clusters or consumer profiles labeled "skeptical, " "concerned, " and "ethical, " which helped explain the association between AW attitudes, some demographic variables, and WTP for WFP. This study is one of the first to address consumer profiling in Latin America, and the findings could have implications for the commercialization of WFP. Hence, customers should receive information to consider welfare innovations when deciding to purchase animal products. The growth of the WFP food market establishes an element of a far more multifaceted phenomenon of sustainable consumption and support of a new paradigm called responsible marketing in emerging markets such as Mexico

Effects of alternative bedding substrates on lamb welfare, productive performance, and meat quality during the finishing phase of fattening

The study analyzed the effect of using sawdust, cellulose, straw, and rice husk bedding on the welfare, performance and meat quality of lambs during the finishing phase of fattening. Ninety-six lambs (fed ad libitum with concentrate) were assigned to pens containing 1 of 4 bedding materials in groups of 12 for 14 days. Live weight and feed consumption were recorded to estimate daily gain and conversion index, and carcass and meat quality variables were measured. Stereotypies, exploratory interactions with bedding material, and agonistic and affiliative interactions between animals were recorded by continuous sampling techniques using video recording. The substrates affected behavior and stress response variables. There were more stereotypies and agonistic interactions at the beginning of the experiment in all treatments (P ≤ 0.05). The lambs fattened on cellulose bedding interacted more with the substrate throughout the finishing stage (P ≤ 0.05), where there were also more affiliative interactions (P ≤ 0.05). Stress levels were lower in lambs on straw, followed by cellulose. No significant differences in production or carcass and meat quality traits were observed between treatments. The results suggest that all substrates evaluated could be efficiently incorporated into the system as bedding material without affecting productivity or product quality

Factores asociados al síndrome de fragilidad en adultos mayores que acuden a consulta externa de Geriatría del Hospital Nacional Hipólito Unanue, Lima-Perú

Objetivo: Determinar los factores asociados al síndrome de fragilidad (SF) en los adultos mayores atendidos en el consultorio externo de Geriatría del Hospital Nacional Hipólito Unanue (Lima-Perú) durante el mes de febrero del 2019. Materiales y métodos: se realizó un estudio observacional, analítico, transversal. Para la detección del SF se empleó el cuestionario de FRAIL. Se recogieron datos demográficos y clínicos, se realizó una valoración funcional, cognitiva, afectiva, nutricional y social, de los pacientes incluidos en el estudio, utilizando los componentes de la valoración geriátrica integral. Se obtuvieron medidas de frecuencia, de asociación y de significancia estadística, entre la variable dependiente SF y las variables independientes. Se calcularon los OR con IC al 95%, considerándose un valor p 80 años (OR = 11,65; IC 95%: 3,64-37,24, p < 0,001), deterioro cognitivo (OR = 9,23; IC 95%: 2,48-34,27, p = 0,001), depresión (OR = 3,37; IC 95%: 1,22-9,29, p = 0,010) y desnutrición (OR = 2,97; IC 95%: 1,05 – 6,55, p = 0,023). Conclusiones: el SF es una condición frecuente en la consulta externa de Geriatría y en nuestro estudio se asoció con una edad mayor de 80 años, deterioro cognitivo, depresión y desnutrición. Un grupo significativo de pacientes tuvo la condición de prefrágiles