Search results for "Earth"
showing 10 items of 12204 documents
Digitaalinen diskurssi työelämän kontekstissa – menetelmällisiä haasteita ja ratkaisuehdotuksia
2020
Digital technologies have become an inseparable part of most workplace activities. In this article, we discuss the study of digital work in the context of complex organizational practices. We lay out some methodological challenges and suggest some possible solutions to them. Firstly, we contend that we should take into consideration the multimedial nature of organizational practices. Secondly, several kinds of data – such as video-recordings of face-to-face encounters, screenshots from digital platforms, ethnographic observation and interviews – may be needed to gain an understanding of such practices. Thirdly, the analyst needs to pay attention to the affordances of the media that the part…
Photocatalytic nano-composite architectural lime mortar for degradation of urban pollutants under solar and visible (interior) light
2017
Abstract Recent advances in nano-technology and nano-additives can give enhanced properties to natural hydraulic lime (NHL), creating a multifunctional material. We have prepared a novel nanocomposite, made of a commercial mortar with 1 wt% and 5 wt% added titania nanoparticles (NPs). These TiO 2 NPs are themselves doped with 1 mol% silver, to give the material enhanced photocatalytic and antimicrobial properties. The Ag-doped TiO 2 NPs were made from a simple, costs effective, aqueous green nanosynthesis process, and the end material only contains 0.01–0.05% Ag. As this mortar is intended to both combat atmospheric pollution, and create more durable/lower maintenance building facades (plas…
Analysis of the Potential of an Increase in Yeast Output Resulting from the Application of Additional Process Wastewater in the Evaporator Station
2019
This paper reports the results of an analysis of process wastewater streams in the context of an increase in yeast production. This research is based on the analysis of data from the biggest yeast factory in Europe. The research presented in this paper involves the analysis of the influence of direction of additional wastewater into the evaporator station on yeast production. In the process wastewater, nitrogen is mainly present in organic forms. The analysis reported in this paper involves the concentration of total nitrogen in wastewater streams, as it is the main parameter applied to determine the amount of wastewater that can be applied in agricultural fields. Directing additional waste…
Förståelighetsperspektiv på finlandssvenskars vanliga uttalsdrag i engelska
2022
The present investigation addresses the gravity of mispronunciation for the intelligibility of English spoken by L1 Finland-Swedish teenagers. Previous research on the topic has been scarce, and even though there is some knowledge about the typical pronunciation challenges faced by this learner group, there is hardly any empirical research on the extent to which the typical mispronunciations actually cause misunderstandings. To investigate this, speech samples were elicited from teenaged L1 Finland-Swedish learners of English, demonstrating typical mispronunciations. Then, an intelligibility test was arranged with L1 English listeners (n = 48) matching the speakers’ age. Results suggest tha…
Mise en évidence d'un Sénonien gypseux sous la série phosphatée du bassin des Ouled Abdoun: un nouveau point de départ pour l'origine des zones déran…
2013
In the Ouled Abdoun sedimentary basin (Morocco), the phosphatic series is composed of regular interbedded phosphatic and marly limestone layers. Exploitation of the phosphate in some deposits in this basin collides frequently with problems bound to the existence, in the phosphatic series, of disturbed areas (sterile bodies) qualified as derangements by the mining engineers of the Office Cherifian Phosphate Group (OCP). Their presence in the phosphatic layers causes two kinds of problems: (1) since the whole phosphatic sequence is overlain by a Quaternary cover, we do not know their volume proportion in the phosphatic layers, and therefore the reserves estimations can be wrong (2) they are g…
Long-term changes in pigmentation of arctic Daphnia provide potential for reconstructing aquatic UV exposure
2016
Abstract Despite the biologically damaging impacts of solar ultraviolet radiation (UV) in nature, little is known about its natural variability, forcing mechanisms, and long-term effects on ecosystems and organisms. Arctic zooplankton, for example the aquatic keystone genus Daphnia (Crustacea, Cladocera) responds to biologically damaging UV by utilizing photoprotective strategies, including pigmentation. We examined the preservation and content of UV-screening pigments in fossil Daphnia remains (ephippia) in two arctic lake sediment cores from Cornwallis Island (Lake R1), Canada, and Spitsbergen (Lake Fugledammen), Svalbard. The aims were to document changes in the degree of UV-protective p…
Expansión urbana del Área Metropolitana de Valencia en el periodo 1984-2011 a partir de imágenes Landsat TM y ETM+
2015
La expansión urbana acelerada producida en décadas recientes en las grandes áreas metropolitanas como Valencia conlleva importantes impactos ambientales, entre ellos la impermeabilización o "sellado antropogénico" del suelo y la pérdida de espacios naturales de gran valor paisajístico. Este trabajo analiza la evolución de la cobertura artificial en el Área Metropolitana de Valencia (AMV) en el periodo 1984-2011 a partir de imágenes Landsat TM y ETM+, validadas a partir de datos SIOSE de mayor resolución espacial. Los resultados muestran, con una precisión del 71%, un aumento de la superficie artificial en el AMV de 8000 ha en dicho periodo, lo que supone un incremento del 10% del suelo sell…
Comment et pour qui cartographier l’îlot de chaleur urbain (ICU) ?
2022
Le réseau MUSTARDijon offre la possibilité de procéder à une cartographie fine des températureshoraires sur Dijon Métropole. La méthode proposée ici repose sur des régressions linéaires multiplesmobilisant deux familles de prédicteurs : des descripteurs du relief et des descripteurs de l’occupation dusol. L’application porte sur la canicule de l’été 2020 (6-9 août). Deux configurations sont comparées. L’une,en mode recherche, laisse la possibilité aux descripteurs de varier dynamiquement en fonction de leurpertinence statistique, l’autre, en mode opérationnel, impose les 5 mêmes descripteurs en entrée. Entermes de performance statistique ou de structure spatiale, l’impact de la méthode n’es…
Projet Collectif de Recherche triennal 2020-2022 : la confluence Saône / Doubs à l’âge du Fer (VIe s. av. J.-C. au Ier s. de notre ère)
2022
Le présent rapport livre les résultats obtenus dans la cadre d’un projet collectif de recherche triennal dont l’objectif visait à relancer une dynamique de recherche sur un secteur géographique clé pour l’étude des mécanismes d'organisation territoriale durant l’âge du Fer : la confluence de la Saône et du Doubs.Combinant recherches documentaires sur l’ensemble des données produites depuis les années 70 à de nouvelles opérations de terrain, ce projet a pour objectif de renouveler nos connaissances sur un certain nombre de thématiques renseignant les processus d’urbanisation durant la protohistoire à travers l’étude des deux sites majeurs que sont Bragny-sur-Saône et Verdun-sur-le-Doubs. Une…
Journée Scientifique de l'Unité Mixte de Recherche Microbiologie des Sols - Géochimie des Interfaces Sol-Eau
2001
International audience; Sessions : CARBONE, GAZ À EFFET DE SERRE, PESTICIDES, ÉCOLOGIE MICROBIENNE, MÉTAUX ET QUALITÉ DES SOLS