Search results for "change"
showing 10 items of 6163 documents
Experimental Constraints on the Deep Magma Feeding System at StromboliVolcano, Italy
2009
International audience; New experiments have been performed on a high-K basalt (PST-9) from Stromboli volcano, Italy, to constrain the physical conditions of golden pumice magmas at their storage level and discuss their petrogenesis. Fluid-present, H2O- and CO2-bearing, near-liquidus experiments were performed at 11508C between 100 and 400MPa and under oxidizing conditions. Glasses were analyzed by Fourier transform IR spectroscopy and their H2O and CO2 concentrations compared with those in glass inclusions.Most glass inclusions cluster near the 200MPa isobar, suggesting entrapment at a depth of ~8 km. Golden pumice magmas have viscosities of 7.9 Pa s and densities of 2.48-2.57 g/cm3. Compo…
Submerged macrophytes as key players in aquatic ecosystems under global change: a multiscale experimental approach
2020
El actual cambio global está causando alteraciones en los ecosistemas de todo el mundo a través de cambios interactivos en los principales factores ambientales (e.g. la temperatura, la concentración de nutrientes y la radiación ultravioleta). Los ecosistemas acuáticos continentales son altamente vulnerables ante estos cambios y, específicamente, en la región mediterránea, la situación es peor ya que la mayoría de estos sistemas son someros y están expuestos a las perturbaciones ambientales y antrópicas. Las praderas de macrófitos sumergidos y, particularmente, los carófitos, son un elemento conspicuo de estos sistemas con un papel fundamental en su funcionamiento. Estos organismos proveen d…
Negative emotional consequences of labour market activation policies for long-term unemployed young adults in Finland
2021
PurposeThis article deals with the negative emotional consequences of active labour market policies (ALMPs) for long-term unemployed young adults in Finland. Although such policies may have positive effects, an exploration of their negative impacts reveals their problematic side effects. We explore various aspects of ALMP interventions that prevent individuals from gaining such positive outcomes and thus reduce their motivation to invest in the policies.Design/methodology/approachDrawing on the affect theory of social exchange, we understand that individuals seek positive rewards from social interactions. Our data is taken from life course interviews with unemployed people aged 20–31 in cen…
Observation of the Early Structural Changes Leading to the Formation of Protein Superstructures.
2014
Formation of superstructures in protein aggregation processes has been indicated as a general pathway for several proteins, possibly playing a role in human pathologies. There is a severe lack of knowledge on the origin of such species in terms of both mechanisms of formation and structural features. We use equine lysozyme as a model protein, and by combining spectroscopic techniques and microscopy with X-ray fiber diffraction and ab initio modeling of Small Angle X-ray Scattering data, we isolate the partially unfolded state from which one of these superstructures (i.e., particulate) originates. We reveal the low-resolution structure of the unfolded state and its mechanism of formation, hi…
Er det forskjell i barns inntak av frukt og grønnsaker og drikke ved 12, 24 eller 48 måneders alder mellom barn av mødre som har deltatt eller ikke d…
2019
Masteroppgave folkehelsevitenskap ME516 - Universitetet i Agder 2019 Background: Women's intake of fruits and vegetables and drinks during pregnancy can affect both mother and child health.Aim: The purpose of this study is to investigate whether the dietary intervention in pregnant women in the Fit for Delivery study has had an effect on what their child is eating and drinking at 12, 24 and 48 months of age.Method: Pregnant women were recruited up to week 20 of pregnancy and were randomized to either a control or intervention group. Participants responded to food frequencyquestionnaires at different time points. Independent sample t-tests were used to analyze the difference in intake of fru…
Crossing borders without travel : virtual exchange practices for students
2019
Virtual Exchange (VE) offers unique educational experiences at the intersection of the digital, the social, and the intercultural. It re-situates learning by creating an inclusive transnational learning space, where the participants move across and beyond cultural, curricular and individual boundaries. nonPeerReviewed
PROGETTARE L’ADATTAMENTO. Resilienze di agricoltura urbana nel contesto europeo
2022
I crescenti fenomeni legati al cambiamento climatico spingono le città a sviluppare piani di resilienza che possano rispondere in termini di sostenibilità ambientale, sociale ed economica. Le strategie nature-based possono rappresentare una soluzione; tra queste l’agricoltura urbana può contribuire ad aumentare la resilienza dei tessuti urbani europei. Questa attività è stata più volte oggetto di interesse in periodi di crisi come impegno comunitario dai caratteri sociali, oltre che produttivi ed educativi. Attraverso un excursus storico e una successiva analisi di casi studio contemporanei, il paper fornisce strumenti progettuali per intervenire nel costruito con strategie che spaziano dal…
Rigenerazione urbana e transizione ecologica. Il ripristino del sistema fluviale dell'Østerå come servizio ecosistemico di Aalborg (DK)
2023
I principi della Carta di Aalborg (1994) hanno ispirato e guidato la rigenerazione della città danese, sede della Prima Conferenza Europea sulle Città Sostenibili, verso un modello di sviluppo urbano sostenibile. Le politiche urbane hanno affrontato i temi della transizione energetica, del recupero delle aree urbane dismesse e della conservazione della natura e della biodiversità in una prospettiva olistica. Per aumentare la resilienza della città nei confronti dei cambiamenti climatici e per migliorare l’equilibrio ecosistemico degli ambienti urbanizzati, Aalborg ha puntato sul rafforzamento delle infrastrutture verdi e blu, avviando progetti di riattivazione dei cicli naturali interrotti …
Reciprocal relations between autonomous motivation from self-determination theory and social cognition constructs from the theory of planned behavior…
2020
Objectives The present study examined reciprocal relations between autonomous motivation from self-determination theory (SDT) and constructs from the theory of planned behavior (TPB) in a sport injury context. Methods The study adopted a three-wave longitudinal cross-lagged panel design. Physical education students in China (N = 4414; Mage = 14.42, SD = 1.75) completed self-report measures of autonomous motivation, attitude, subjective norm, and perceived behavioral control with respect to sport injury prevention at baseline (T1) and at two follow-up occasions one (T2) and three (T3) months later. Proposed reciprocal relations between autonomous motivation and the TPB constructs controlling…
Automatic evaluation of information provider reliability and expertise
2013
Published version of an article in the journal: World Wide Web. Also available from the publisher at: http://dx.doi.org/10.1007/s11280-013-0249-x Q&A social media have gained a lot of attention during the recent years. People rely on these sites to obtain information due to a number of advantages they offer as compared to conventional sources of knowledge (e.g., asynchronous and convenient access). However, for the same question one may find highly contradicting answers, causing an ambiguity with respect to the correct information. This can be attributed to the presence of unreliable and/or non-expert users. These two attributes (reliability and expertise) significantly affect the quality o…