Más allá

Universidad de Sevilla. Grado en Comunicación Audiovisua

Mapping and assessing ecosystem services: Methods and practical applications

The EU Biodiversity Strategy to 2020 called on EU member states to map and assess the state of ecosystems and their services in their national territory (European Commission 2011). This knowledge-base should be designed to be a primary resource for developing Europe’s green infrastructure, to identify areas for ecosystem restoration and to set a baseline against which the goal of ‘no net loss” of biodiversity and ecosystem services can be evaluated. Thus, appropriate methods, information and data are needed to know where and how, for example, food, water, clean air, other materials and recreation are provided, and how climate, nutrients, natural disasters, pests and diseases are regulated. Information and data on actual ecosystem services (ES) demands, beneficiaries and potential mismatches with their supply location as well as ES quality and quantity are essential to make informed decisions for appropriate management of natural resources. ES are a very complex topic and their integrative assessment and implementation asks for truly transdisciplinary approachesThe ESMERALDA project received funding from the European Union’s Horizon 2020 research and innovation programme: grant agreement No 64200

Estudio clínico de la isquemia mesenterica no oclusiva

Tesis inédita de la Universidad Complutense de Madrid, Facultad de Medicina, leída en 1984.Fac. de MedicinaTRUEProQuestpu

Characterization of the keratinolytic activity of three streptomyces strains and impact of their co-cultivation on this activity

Producción CientíficaIn this study, we describe the characterization of three efficient chicken feather-degrading Streptomyces bacteria isolated from honeybee samples and assess the impact of their co-cultivation on this activity and antistaphylococcal activity. Streptomyces griseoaurantiacus AD2 was the strain showing the highest keratinolytic activity (4000 U × mL−1), followed by Streptomyces albidoflavus AN1 and Streptomyces drozdowiczii AD1, which both generated approximately 3000 U × mL−1. Moreover, a consortium constituted of these three strains was able to use chicken feathers as its sole nutrient source and growth in such conditions led to a significant increase in antibiotic production. S. griseoaurantiacus AD2 was the only strain that exhibited weak antimicrobial activity against Staphylococcus aureus. UPLC analyses revealed that a significant number of peaks detected in the extracts of co-cultures of the three strains were missing in the extracts of individual cultures. In addition, the production of specialized metabolites, such as undecylprodigiosin and manumycin A, was clearly enhanced in co-culture conditions, in agreement with the results of the antimicrobial bioassays against S. aureus. Our results revealed the benefits of co-cultivation of these bacterial species in terms of metabolic wealth and antibiotic production. Our work could thus contribute to the development of novel microbial-based strategies to valorize keratin waste.Fondo Europeo de Desarrollo Regional (FEDER), (grant TCUE 2021–2023) - (project 067/229111)Unión Europea, H2020-MSCA-IF-2016 - (grant UE-18-VANRESTREP-740080

Optimization of unequal error protection AL-FEC scheme via adapted simulated annealing

We adapt simulated annealing for speeding up the search of optimal configurations for protecting video transmission over IP networks. The considered protection scheme is a version of the Pro-MPEG COP3 FEC codes, consisting in using several matrices of unequal size per FEC block

Adaptive protection scheme for MVC-encoded stereoscopic video streaming in IP-based networks

We present an adaptive unequal error protection (UEP) strategy built on the 1-D interleaved parity Application Layer Forward Error Correction (AL-FEC) code for protecting the transmission of stereoscopic 3D video content encoded with Multiview Video Coding (MVC) through IP-based networks. Our scheme targets the minimization of quality degradation produced by packet losses during video transmission in time-sensitive application scenarios. To that end, based on a novel packet-level distortion model, it selects in real time the most suitable packets within each Group of Pictures (GOP) to be protected and the most convenient FEC technique parameters, i.e., the size of the FEC generator matrix. In order to make these decisions, it considers the relevance of the packet, the behavior of the channel, and the available bitrate for protection purposes. Simulation results validate both the distortion model introduced to estimate the importance of packets and the optimization of the FEC technique parameter values

Oligosacáridos utilizados para inhibir la mitosis de los astrocitos y de las células tumorales del sistema nervioso; y procedimiento de obtención de estos oligosacáridos

Traducción de Patente Europea E92923821 (fecha de solicitud, 13/11/1992).-- Prioridad: ES199111139102522.-- Titular: Consejo Superior de Investigaciones Científicas (CSIC).La invención se refiere a oligosacáridos y a preparaciones medicinales que contienen ingredientes orgánicos activos.Peer reviewe

Identifying past social-ecological thresholds to understand long-term temporal dynamics in Spain

A thorough understanding of long-term temporal social-ecological dynamics at the national scale helps to explain the current condition of a country’s ecosystems and to support environmental policies to tackle future sustainability challenges. We aimed to develop a methodological approach to understand past long-term (1960-2010) social-ecological dynamics in Spain. First, we developed a methodical framework that allowed us to explore complex social-ecological dynamics among biodiversity, ecosystem services, human well-being, drivers of change, and institutional responses. Second, we compiled 21 long-term, national-scale indicators and analyzed their temporal relationships through a redundancy analysis. Third, we used a Bayesian change point analysis to detect evidence of past social-ecological thresholds and historical time periods. Our results revealed that Spain has passed through four socialecological thresholds that define five different time periods of nature and society relationships. Finally, we discussed how the proposed methodological approach helps to reinterpret national-level ecosystem indicators through a new conceptual lens to develop a more systems-based way of understanding long-term social-ecological patterns and dynamicsThis work was supported by the Biodiversity Foundation (http://www.fundacion-biodiversidad.es/) of the Spanish Ministry of Agriculture, Food and Environment. Partial financial support was also provided by the Ministry of Economy and Competitiveness of Spain (project CGL2014-53782-P: ECOGRADIENTES). The Spanish National Institute for Agriculture and Food Research and Technology (INIA) funded Marina García-Llorente as part of the European Social Fund. Blanca González García-Mon participated in this article as a “la Caixa” Banking Foundation scholar. The funders had no role in the study design, data collection and analysis, preparation of the report, or the decision to submit the study for publicatio

Perceptual distortion modeling for side-by-side 3D video delivery

A frame-level distortion model based on perceptual features of the human visual system is proposed to improve the performance of unequal error protection strategies and provide better quality of experience to users in Side-by-Side 3D video delivery systems

ViCoCoS-3D: Videoconferencing common scenes

This paper presents a 3D video dataset containing sequences with typical content from videoconferencing scenarios. The objective of this dataset is to provide freely-available sequences for the research community to support the develop-ment and evaluation of processing techniques applicable to 3D videoconferencing systems. Therefore, a detailed description of the generation process and the content characteristics is provided, together with insights of possible applications of the datase