Search results for "Environment"
showing 10 items of 28487 documents
Ympäristövirkamies viestijänä : vuorovaikutuksen edellytykset kansalais- ja tietoyhteiskunnassa
2002
The Negotiated Cultural Environment
2020
The Master’s Programme in Cultural Environment Studies (KUOMA), at the University of Jyväskylä’s Department of Music, Art, Culture Studies, is an educational innovation founded upon ‘cultural environment’ as a concept and as a framework (as a concept of agency), as well as analysis of the current state of the field of cultural environments. This article takes a look at some of the starting points and foundations for the research within the Master’s Programme in Cultural Environment Studies, as well as expounding teaching and research practices using two case examples. The Mätäsvaara project was created for developing multidisciplinary, interdisciplinary pedagogy for the university setting b…
Évolutions récentes de l'agriculture française. Analyse géographique des tendances régionales et de la mise en place d'un nouveau dispositif d'aménag…
2005
The recent transformations in French agriculture and the emergence of the concept of sustainable development in the last decade have pushed politicians to defining new measures, of which most concern agriculture. The analysis of agricultural systems leads nowadays to studies on interactions with the physical, economical or social environment. The subject of this thesis is related to this context. Firstly, we propose to analyze the recent evolutions in French agriculture, particularly in the last mandate during which the most radical transformations occurred. It is of particular interest to identify, besides the general situation of French agriculture, the differences in evolution between th…
Economical evaluation of ecological benefits of the demand side management
2014
Environmental pollution and over-exploitation of non-renewable sources to find energy are current topics for the modern world that is now at having to deal with several issues such as the greenhouse effect, acid rain and climate change. In this study, the economical estimate of the savings in carbon dioxide obtained with a careful management of electrical loads is presented. Four particular scenarios are designed as case studies: Italy, France, United Kingdom and Germany. A comparison is presented with a similar study, made in 2007, when green energies were not yet very developed.
Wybrane problemy zrównoważonej intensyfikacji rolnictwa na przykładzie badań w województwie opolskim
2017
Celem opracowania jest identyfikacja problemów związanych z wdrażaniem w gospodarstwach rolnych województwa opolskiego strategii zrównoważonej intensyfikacji. Materiał pierwotny do badań zebrano w 2014 roku metodą wywiadu kwestionariuszowego w 100 celowo dobranych gospodarstwach rolnych o powierzchni powyżej 10 ha UR w subregionach reprezentatywnych dla rolnictwa regionu. Na podstawie badań stwierdzono, że rolnicy najczęściej wybierają trajektorię rozwojową, polegającą na powiększaniu areału posiadanej ziemi, przy jednoczesnym dostarczaniu dodatkowych usług środowiskowych. W opinii badanych rolników regulowana normami środowiskowymi intensyfikacja produkcji rodzi potrzebę ciągłego uczenia s…
Preliminary Evaluation of Plasmix Compound from Plastics Packaging Waste for Reuse in Bituminous Pavements
2021
Finding an appropriate technical solution for reusing waste plastics is crucial for creating a circular plastic economy. Although mechanical recycling is the best option for recycling post-consumer plastics, some heterogeneous mixed plastics cannot be recycled to produce secondary material due to their very low properties. In this case, alternative routes should be considered in order to limit their disposal as much as possible. Therefore, in order to solve the environmental problems in the landfills of plastic waste recycling, and to improve the mechanical performance of bitumen for road pavement, the reuse of these post-consumer plastic wastes are preliminarily evaluated for the modificat…
Control of the Development of Swirling Airflow Dynamics and Its Impact on Biomass Combustion Characteristics
2017
Abstract The development of the swirling flame flow field and gasification/ combustion dynamics at thermo-chemical conversion of biomass pellets has experimentally been studied using a pilot device, which combines a biomass gasifier and combustor by varying the inlet conditions of the fuel-air mixture into the combustor. Experimental modelling of the formation of the cold nonreacting swirling airflow field above the inlet nozzle of the combustor and the upstream flow formation below the inlet nozzle has been carried out to assess the influence of the inlet nozzle diameter, as well primary and secondary air supply rates on the upstream flow formation and air swirl intensity, which is highly …
Nutrition et protection de la vigne par la symbiose mycorhizienne à arbuscule
2021
National audience; La vigne, comme la majorité des espèces de plante d’intérêt agronomique, forme une symbiosemutualiste avec les Champignons Mycorhiziens à Arbuscules (CMA). En contrepartie deproduits issus de la photosynthèse, les CMA soutiennent leur(s) plante(s) hôte(s) dansl’acquisition de nutriments et la lutte contre leur(s) pathogène(s). En tant que biofertilisants, cessymbiontes obligatoires représentent une alternative de choix à l’égard des pratiques agricolesconventionnelles pour le développement d’une agriculture, et notamment d’une viticulturedurable. Les échanges entre les deux partenaires sont permis par la mise en place de structuresfongiques spécialisées appelées arbuscule…
Effects of arbuscular mycorrhizal symbiosis on nitrogen dynamics in Mediterranean agro-ecosystems
2010
Le simbiosi arbuscolo micorriziche (AM) sono formate dai funghi appartenenti al phylum Glomeromicota e piante superiori. Le simbiosi (AM) sono caratterizzate dalla penetrazione attiva del fungo dentro negli spazi intercellulari della cortaccia radicale e dalla formazione di strutture di scambio (chiamate ‘arbuscoli’) all’interno della parere cellulare. Gli arbuscoli sono strutture ramificate formate dal fungo AM all’interno della cellula vegetale invasa e sono indubbiamente gli organi chiave della simbiosi. Durante la loro formazione, la cellula vegetale si trasforma radicalmente. In particolare, la membrana cellulare si invagina e una membrana periarbuscolare con una ampia superficie di sc…