Search results for "sostenible"
showing 10 items of 293 documents
Kinetic modeling of autotrophic microalgae mainline processes for sewage treatment in phosphorus-replete and -deplete culture conditions
2021
[EN] A kinetic model of autotrophic microalgal growth in sewage was developed to determine the biokinetic processes involved, including carbon-, nitrogen- and phosphorus-limited microalgal growth, dependence on light intensity, temperature and pH, light attenuation and gas exchange to the atmosphere. A new feature was the differentiation between two metabolic pathways of phosphorus consumption according to the availability of extracellular phosphorus. Two scenarios were differentiated: phosphorus-replete and -deplete culture conditions. In the former, the microalgae absorbed phosphorus to grow and store polyphosphate. In the latter the microalgae used the stored polyphosphate as a phosphoru…
Production of microalgal external organic matter in a Chlorella-dominated culture: influence of temperature and stress factors
2020
[EN] Although microalgae are recognised to release external organic matter (EOM), little is known about this phenomenon in microalgae cultivation systems, especially on a large scale. A study on the effect of microalgae-stressing factors such as temperature, nutrient limitation and ammonium oxidising bacteria (AOB) competition in EOM production by microalgae was carried out. The results showed non-statistically significant differences in EOM production at constant temperatures of 25, 30 and 35 degrees C. However, when the temperature was raised from 25 to 35 degrees C for 4 h a day, polysaccharide production increased significantly, indicating microalgae stress. Nutrient limitation also see…
The Inclusion of Socially Irresponsible Companies in Sustainable Stock Indices
2019
Social rating agencies implement complex filters to identify the companies with the best sustainable and social performance and help investors select the companies for their sustainable portfolios. This study analysed whether companies that are defined as ethical, sustainable and socially responsible by those agencies actually deserve this label. More specifically, the inclusion in the prestigious Dow Jones Sustainability Index (DJSI) World of companies that have been involved in controversies according to the Thomson Reuters Eikon database was studied. The results show that the inclusion of irresponsible companies in the DJSI Index is a fact. This outcome is in line with previous studies t…
Assessing the Effect of the Economy for the Common Good System on Business Performance
2023
Extant literature has pointed to organizational hybridity to lever sustainable business transformation. Moreover, some authors hold that there is a possible trade-off between sustainability and performance. However, there is still little empirical evidence on the impact that such sustainability-driven hybridization systems have on performance. Thus, the present study’s main goal is to fill this gap by providing empirical evidence on the impact of the implementation of the Economy for the Common Good, as a sustainability-driven organizational system, on business performance. To do so, the authors relied on a sample of 206 businesses from five European countries. Then, the authors follo…
Utilización de sistemas informáticos para el diseño de estaciones de tratamiento de aguas residuales
1994
Los sistemas informáticos para el diseño de Estaciones de Tratamiento de Aguas Residuales (ETAR) resultan de gran utilidad para la toma de decisiones relacionadas con la gestión de la calidad del agua en el medio natural. En este artículo se presenta el sistema DATAR, desarrollado para el diseño completo y riguroso de una ETAR que cumpla las especificaciones impuestas al vertido. Para ello se han desarrollado modelos matemáticos que describen los procesos que tienen lugar en los distintos elementos de tratamiento considerando los parámetros de calidad demanda biológica de oxígeno a los 5 días (DBO5), demanda química de oxígeno (DQO), sólidos suspendidos (SS), nitrógeno Kjeldhal (NKT) y fósf…
Innocampus Explora: Una aproximación multidisciplinar a la problemática ambiental
2020
[ES] Presentamos las actividades del proyecto de innovación Innocampus Explora desarrollado en el campus de Burjassot-Paterna de la Universitat de València y cuyo objetivo principal es mostrar la interrelación existente entre los diferentes grados científicos y técnicos del campus. En la presente anualidad, el equipo de trabajo integrado por estudiantes y profesores de todos las facultades y escuelas del campus de Burjassot-Paterna, ha desarrollado actividades en torno a la problemática medioambiental. Una visión transversal e interdisciplinar de los problemas de los usos del plástico y de la energía nuclear que enlaza con varios de los Objetivos de Desarrollo Sostenible (ODS) dictados por …
Emprendimiento Social en Ciencias de la Salud: Creación del Aula ApS-Salud en la Facultad de Farmacia de la Universitat de València.
2021
[EN] Service-Learning (SL) aligned to Sustainable Development Goals (SDG) is an educational tool that is used in the Faculty of Pharmacy of the University of Valencia in an interdisciplinary way. The Study Plans of the five Degrees taught in this center do not explicitly cover subjects or content in entrepreneurship, business creation and / or development of projects that may originate business.However, there are certain contents that are oriented in a different way could be used to promote these abilities in students. SL-Health Classroom aims to cover this aspect and has been created with the aim of designing, planning and executing SL projects that serve as a driving idea for a subsequent…
La competencia Aprender a Aprender en el marco de las competencias transversales clave de los Objetivos del Desarollo Sostenible en las Universidades.
2019
[EN] The communication offers the possibilities of educational innovation that are raised from the research carried out to deepen the development of the competence learning to learn in university contexts. The results of the discussion groups are analyzed through the prism of the transversal key competences that are proposed to help achieve the Objectives of Sustainable Development through teaching. It ends with a few brief conclusions.
Inteligencia artificial, responsabilidad y compromiso cívico y democrático
2020
Este artículo parte del reconocimiento de los profundos cambios que la inteligencia artificial está provocando en diversas esferas de la vida humana e invita a una reflexión sobre la necesidad de incorporar criterios éticos de responsabilidad en la práctica tecnológica. Para ello se toma como punto de partida el terreno político, por entender que es un terreno fértil desde el que formular el concepto de inteligencia artificial responsable. Este concepto de responsabilidad tecnológica se expresa desde la preocupación por los asuntos políticos humanos relativos a los derechos humanos y los objetivos de desarrollo sostenible y concibe que los avances en materia de inteligencia artificial deben…
Irrigation water saving strategies in Citrus orchards: Analysis of the combined effects of timing and severity of soil water deficit
2021
[EN] The knowledge of the crop response to soil water deficit is essential to predict the actual crop water requirements under limited soil water conditions. The mathematical schematization of the crop response under RDI can allow identifying the exact irrigation timing. The threshold of soil water status below which crop transpiration decreases represents a key parameter for the water stress functions. The main objective of this paper was to investigate the effects of several RDI treatments, applied during the three stages of fruit growth, on soil-plant-water relations of drip-irrigated mandarin trees. Experiments were carried out in seven irrigation treatments: a control, irrigated at 125…