A new model of dg-categories

In this article, we develop a new model for the category of dg-categories. Following Rezk's example in the case of classic Segal spaces, we define dg-Segal spaces: functors between free dg-categories of finite type and simplicial spaces to which we add certain properties. We define also complete dg-Segal spaces, and make their relationship to classic Segal spaces explicit. With the help of two new hypercover constructions, and up to a certain hypothesis, we prove that there exists an equivalence between the homotopy category of dg-categories and the homotopy category of functors defined above with a model structure making the complete dg-Segal spaces into its fibrant objects.Comment: 41 page

Descripción codicológica de un manuscrito recuperado con dos obras del Marqués de Santillana: Ms. Add. 9305, Cambridge University Library

Este estudio es una descripción del manuscrito recuperado (add. 9305) de la Cambridge University Library, de sus aspectos externos e internos. El manuscrito contiene dos obras: una de Íñigo López de Mendoza, Marqués de Santillana, los "Proverbios" con sus glosas; y la otra también de Íñigo López de Mendoza, Marqués de Santillana y de Alonso de Cartagena: "La cuestión sobre el acto de la caballería". Consecuentemente se modifica el listado de testimonios de los "Proverbios" que ofrece "El cancionero del siglo XV (c. 1360-1520)" de Brian Dutton.This article analises the manuscript recovered at the Cambridge University Library (add. 9305), its external and internal aspects. The manuscript contains two works: one of Iñigo López de Mendoza, Marquis of Santillana, ‘Proverbios’ with its glosses; and the other also of Íñigo López de Mendoza, Marquis of Santillana and Alonso of Cartagena: "The question about the act of chivalry". Consequently, the list of testimonials of the ‘Provebios’ offered in "El cancionero del siglo XV (c. 1360-1520)" by Brian Dutton is rather changed

El cuerpo de los números p-ádicos. Propiedades algebraicas y topológicas.

A lo largo de este trabajo hemos estudiado el cuerpo de los números p-ádicos, compleción de los números racionales para la norma p-ádica. Así, estudiaremos las propiedades algebraicas y topológicas de éste, comparando en los casos pertinentes con el cuerpo de los números reales. Para ello, veremos la formación de la compleción de un cuerpo normado genérico, para luego poder construir la estructura que nos interesa. Una vez hecho esto, veremos el desarrollo en forma de serie de los números p-ádicos, que llamaremos "desarrollo canónico", y que nos permitirá definir los enteros p-ádicos. Después, trataremos las raíces de los polinomios con coeficientes en los enteros p-ádicos a través del Lema de Hensel, así como otras propiedades algebraicas de los enteros p-ádicos. Por último, tras una pequeña digresión sobre límites proyectivos, veremos las propiedades topológicas de los p-ádicos, algunas de ellas, como la homeomorfía, a través del conjunto triádico de Cantor.Grado en Matemática

Descripción codicológica de un manuscrito recuperado con dos obras del Marqués de Santillana: Ms. Add. 9305, Cambridge University Library

Este estudio es una descripción del manuscrito recuperado (add. 9305) de la Cambridge University Library, de sus aspectos externos e internos. El manuscrito contiene dos obras: una de Íñigo López de Mendoza, Marqués de Santillana, los "Proverbios" con sus glosas; y la otra también de Íñigo López de Mendoza, Marqués de Santillana y de Alonso de Cartagena: "La cuestión sobre el acto de la caballería". Consecuentemente se modifica el listado de testimonios de los "Proverbios" que ofrece "El cancionero del siglo XV (c. 1360-1520)" de Brian Dutton.This article analises the manuscript recovered at the Cambridge University Library (add. 9305), its external and internal aspects. The manuscript contains two works: one of Iñigo López de Mendoza, Marquis of Santillana, ‘Proverbios’ with its glosses; and the other also of Íñigo López de Mendoza, Marquis of Santillana and Alonso of Cartagena: "The question about the act of chivalry". Consequently, the list of testimonials of the ‘Provebios’ offered in "El cancionero del siglo XV (c. 1360-1520)" by Brian Dutton is rather changed

La enfermera escolar y su comunicación con el niño y adolescente

Recoge una breve descripción del perfil y funciones de la enfermera escolar e incluye recomendaciones prácticas para una adecuada comunicación con el niño y adolescente en este context

Estrategias de afrontamiento

Recoge brevemente una aproximación teórica a las estrategias de afrontamiento, su relación con los rasgos de personalidad y sus efectos sobre la salud. Además, incluye una propuesta sobre el desarrollo de estrategias de afrontamiento adaptativas a través de la agilidad emocional y el mindfulness

Dunas fijas descalcificadas atlánticas (Calluno-Ulicetea)

Este tipo de hábitat, tal y como aparece descrito dunas terciarias o fijas de territorios más o menos lluviosos y con suelos lavados en las que se instalan brezales de sustratos ácidos, correspondería con las dunas estabilizadas por matorral mediterráneo, prácticamente exclusivo de la costas del Golfo de Cádiz. Se trata de dunas evolucionadas bajo ambientes climáticos húmedos, que permiten el lavado y lixiviación de bases en el suelo (especialmente calcio) y su consiguiente acidificación, lo que posibilita el desarrollo de brezales acidófilos. La comunidad de plantas característica contiene: Calluna vulgaris, Carex arenaria, C. trinervis, Erica ciliaris, E. cinerea, E. scoparia, Festuca vasconcensis, Pseudoarrhenatherum longifolium (Arrhenatherum thorei) y Ulex australis

2250. Dunas litorales con Juniperus spp.

Dunas estabilizadas del interior del sistema dunar, cubiertas con matorrales de vegetación madura de porte arbustivo alto dominadas por enebro marítimo y sabina (Juniperus), típicos de la costa termoatlántica y de algunos sectores del litoral mediterráneo

Nutraceutical profiles of apricots (Prunus armeniaca L.) as a source of fruit quality traits for breeding

Aim of study: In a social context of increasing concern about healthy diets, the development of new varieties with enhanced content in nutraceutical compounds is an important objective of the fruit breeding programs currently developed. In this sense, apricot is a fruit crop very appreciated by consumers worldwide due to its organoleptic characteristics, but also plays an important role in human nutrition due to its content of phytocompounds as sugars, organic acids, vitamins and polyphenols. Area of study: The identification of sources of variation for these traits could be useful for apricot breeding worldwide. Material and methods: New selections from the apricot breeding program carried out at the Instituto Valenciano de Investigaciones Agrarias (IVIA, Spain) and traditional varieties have been analysed aimed at identifying sources of genetic variation for fruit quality. For this purpose, sugar content, organic acids and ascorbic acid were studied during three crop years. Main results: Results revealed sucrose and glucose as the major sugars, malic and citric acid as the main organic acids, and diverse ascorbic acid content among the cultivars studied. Research highlights: Some accessions point as potential sources to increase fruit quality. In addition, the study showed that apricot peel is an excellent source of nutraceutical compounds. Moreover, this study opens up new possibilities to study the genetic control of these traits in apricot in the future

Living Alone: Associations with Diet and Health in the Spanish Young Adult Population

Eating together as a family has important health benefits, as the diet is more balanced and of a higher quality. Eating together is also a factor in the prevention of diet-related diseases. The promotion of family and shared meals is currently a public health strategy. The aim of this research was to study the eating habits of the Spanish young adult population and their impact on health. An observational, descriptive, cross-sectional study was carried out using surveys. A questionnaire was designed and validated to explore a set of variables related to food and health. The dissemination was carried out through social networks by means of an online form, using non-probabilistic snowball sampling to obtain a sample of 17,969 subjects aged between 18 and 45 years. We found statistically significant differences between people living in a family home compared to people living outside a family home in the healthy eating index for the Spanish population, fish consumption, and fried food consumption. This suggests that the nutrition of people living in a family home is healthier, although their BMI is higher. People living together have a statistically higher healthy eating index value than people living alone; consume fast food, fried food, and ultra-processed food less frequently; and eat fish more often. On the other hand, people who live in a family home or are accompanied are more likely to have a sedentary lifestyle and are less physically active. It was concluded that people living alone have a worse healthy eating index than those living with company, which seems to indicate that nutritional interventions should pay attention to people living alone as a variable to be taken into account in future analyses.Medicin