Search results for "RISA"

Synthesis of mesoporous silica nanoparticles (MSNs) and encapsulation of cisplatin for targeted cancer therapies

2014

The aim of this PhD thesis is to elaborate mesoporous silica nanoparticles (MSNs) able to sustain the release of cisplatin into the intracellular compartments of solid tumors. The parametric study shows that morphological, structural and textural properties of MSNs-MCM-41, synthesized by sol-gel reaction by using TEOS as a silica source and CTAB as a structure-directing agent, depend on pH, stirring speed, temperature and extraction process of CTAB. The synthesis atmosphere has to be controlled in order to avoid the presence of ethanol and carbonate species which are responsible of necks between particles generating unstable suspensions of MSNs.MSNs were functionalized in order to control t…

Temporal dynamic of biofilms enhances the settlement of the central-Mediterranean reef-builder Dendropoma cristatum (Biondi, 1859).

2021

Abstract Research on marine invertebrate settlement provides baseline knowledge for restoration technique implementation, especially for biogenic engineers with limited dispersion ability. Previously, we determined that the maturity of a biofilm strongly enhances the settlement of the vermetid reef-builder Dendropoma cristatum. To elucidate settlement-related biofilm features, here we analyse the structure and composition of marine biofilms over time, through microscopic observations, eukaryotic and prokaryotic fingerprinting analyses and 16S rDNA Illumina sequencing. The vermetid settlement temporal increase matched with the higher biofilm coverage on the substratum and the reduction of th…

How bright are the Nordic Lights? : job quality trends in Nordic countries in a comparative perspective

2017

Nordic countries stand out from the rest of the Europe in terms of job quality. Comparative research literature sought to explain the distinctiveness of Nordic countries with diverse sets of institutional frameworks. However, global competition, technological revolution and deregulation are common developments throughout the industrial world – processes which are seen to erode the meaning of institutions and nation states as protective mechanisms. This dissertation discusses the question on the existence and persistence of the Nordic working life model through the concept of job quality, which are investigated using surveys on working conditions. The study draws from both universal and inst…

Cambio de acomodo

2008

Impact of textual data augmentation on linguistic pattern extraction to improve the idiomaticity of extractive summaries

2021

International audience; The present work aims to develop a text summarisation system for financial texts with a focus on the fluidity of the target language. Linguistic analysis shows that the process of writing summaries should take into account not only terminological and collocational extraction, but also a range of linguistic material referred to here as the "support lexicon", that plays an important role in the cognitive organisation of the field. On this basis, this paper highlights the relevance of pre-training the CamemBERT model on a French financial dataset to extend its domainspecific vocabulary and fine-tuning it on extractive summarisation. We then evaluate the impact of textua…

La science aux chansons : réflexions sur un objet médiatique-populaire en vulgarisation scientifique

2012

International audience

Characterisation and Anaerobic Batch Degradation of Materials Accumulating in Anaerobic Digesters Treating Poultry Slaughterhouse Waste

2001

We characterised materials accumulating in two failed mesophilic semi-continuous anaerobic digesters treating poultry slaughterhouse waste and, for reference, materials in the two well-performing digesters, to find the anaerobic degradability of these materials and the factors affecting their degradation. We also studied materials accumulating and stratifying in various layers in one of the two well-performing digesters. The material from the most severely failed digesters produced methane sluggishly and did not improve appreciably even with 33 percent dilution suggesting that the recovery of failed process is slow. The methane production was apparently affected by the accumulated long-chai…

Influence of biotic and abiotic factors on soil organic matter dynamics assessed by the biogeochemical characterisation of soluble organic matter

2014

Soils are the greatest reservoir of C on the continents, and organic matter mineralisation bymicrobial activity represents the major part of the CO2 emitted by terrestrial ecosystems.In this work, we studied water-extractable organic matter (WEOM), which corresponds to themore reactive fraction of soil organic matter (SOM). Our objectives were (i) to identify therelationships of WEOM dynamics with bacterial communities, and with soil physico-chemicalparameters; (ii) to provide a precise chemical characterisation of WEOM.There is a strong link between SOM solubility and the structure of bacterial communities, andan erosion of their diversity has an impact on SOM and WEOM dynamics, and leads …

Consolidation of waterlogged woods by in-situ polymerisation of isoeugenol

2008

Semantic and perceptive organisation of Sauvignon blanc wine characteristics: Influence of Expertise.

2011

Abstract The influence of expertise on hierarchical organisation of knowledge about Sauvignon blanc wine sensory properties was investigated. Sixteen wine professionals (‘experts’) and 16 wine consumers in New Zealand organised 67 experimenter-provided descriptors of Sauvignon blanc wine by building an hierarchical tree with the sensory properties (see Urdapilleta, Giboreau, Manetta, Houix, & Richard, 2006 ). Each participant organised the Sauvignon blanc sensory properties under two conditions, a Semantic condition (memory-based) and a Perceptive condition (experiential). The Perceptive condition followed the Semantic condition and involved participants tasting three Sauvignon blanc wines,…