Search results for "valorisation"
showing 10 items of 94 documents
Microbiological, chemical and sensory aspects of bread supplemented with different percentages of the culinary mushroom Pleurotus eryngii in powder f…
2018
Pleurotus eryngii (DC.) Quél. powder was used in bread production. Three dough trials (0, 5 and 10% of mushroom) were obtained with commercial baker's yeast. P. eryngii powder was first tested against several yeast species; 10% P. eryngii trial was characterised by the highest pH and total titratable acidity. P. eryngii did not influence negatively the fermentation process, since all trials reached yeast levels of 10 8 CFU g −1 . Mushroom powder decreased bread height and softness, increased crust redness and crumb void fraction and cell density and, although the breads were scored diverse, the overall assessment was comparable. The final breads provided higher concentrations of thiamin, ri…
The Averinga’s Edicola and the Cult of Water in Palermo. From Knowledge to Valorisation
2018
Si descrive un approccio multidisciplinare allo studio di un singolare monumento storico, l’Edicola dell’Averinga, che versa attualmente in gravi condizioni di degrado; questa costruzione fu realizzata nel 1587 dal Senato Palermitano a protezione delle acque della sorgente Ayn Rutah (nome arabo di Averinga) che sgorgavano proprio al suo interno e che da qui venivano raccolte e incanalate verso i fertili giardini, le abitazioni che si trovavano in prossimità delle mura cittadine e alcune delle più importanti fontane della città storica. La più antica descrizione a noi pervenuta della zona in cui è sita l'Edicola, la cosiddetta depressione Danisinni, appartiene al geografo iracheno Al-Qaim Mu…
Sphères privée et professionnelle chez les enseignants du premier degré : comment priorisent-ils ?
2019
Private and professional lives among primary teachers: how they prioritize? Being a teacher in primary school seems far from allowing the articulation of work and private life in such a comfortable manner as seen in collective beliefs. In order to deconstruct the belief considering teachers as privileged, this contribution proposes, based on empirical results (an online survey with 21,642 responses), to report, first, how primary teachers prioritize their private or professional lives. Second, this paper highlights the reasons which lead them to favour one of the two fields, notably when priority is given to private life at the expense of professional life. Referring to the issue of work-fa…
Retour en formation et parcours d'études atypiques : déterminants et valorisation sur le marché du travail
2019
Life long learning appears as a major concern for our societies. After leaving the educational system, learning can imply returning to school or continuing education. Academic careers in France seem less and less linear. Young peopleare encouraged to make the most of college breaks in order to diversify their experiences. During their career, they are to be trained to « be free to choose their professional future », as mentions a new law. This thesis, then, aims atidentifying the reasons why people go back to training and at stuying how such returns are seen by the labor market.This work includes a preliminary chapter and three other chapters, each with specific data. Based on a literature …
Optimization of acetate production from citrus wastewater fermentation
2021
Abstract Citrus wastewater is a sugar-rich waste stream suitable for the recovery of energy of material from its treatment. In this study, fermentation of citrus wastewater was carried out to assess the optimal conditions to maximize the bioconversion of the organic substrate into acetate. Unbalanced nutrient (C: N: P 200:0.1:0.1) enabled the highest acetate production. The presence of the particulate organic fraction enabled to obtain a higher acetate concentration regardless the initial COD concentration. Initial pH values higher than 5 did not cause substantial differences on the maximum bioconversion of COD into acetate in Trial 3, whereas pH lower than 5 hindered the hydrolysis process…
Catalytic valorisation of Chlorella sp. algae to obtain 5-Hydroxymethylfurfural in the presence of Nb2O5 or NbOPO4
2023
Microalgae are interesting biomass able to growth in not-arable lands, in wastewaters or seawaters. There are plenty of species of microalgae and several of them find application in various industrial sectors because they are source of several products in an integrated biorefinery view. In this work two acidic heterogeneous catalysts, namely Nb2O5 and NbOPO4 have been used. Both are commercial products provided by CBMM and they have been physico-chemically characterised. The isomerisation/dehydration reactions proceed through a tandem pathway involving the Lewis and Brønsted acid sites provided by the surface of the acidic solids giving rise to the isomerization of glucose to fructose, foll…
Démocratisation de l'enseignement supérieur et emprise des parcours
2014
This article looks at how the organization of the education system and the pathways leading to higher education enable social mobility or on the contrary the reproduction of inequalities. We thus compare three countries: France, Switzerland, and Canada. The results using panel data in these three countries show two different situations. The more higher education is valued rather than vocational training, the more inequalities tend to increase. The competition is such that it is the youth with a privileged social background who benefit more from its expansion. On the other hand, when the vocational education and training is more valued, inequalities in higher education could tend to be more …
Valorisation of Cashew Nut Shell Liquid Phenolics in the Synthesis of UV Absorbers
2019
Valorisation of industrial iron oxide waste to produce magnetic barium hexaferrite
2016
Barium M-type hexagonal ferrite (BaM, BaFe12O19) is an immensely important magnetic material, which we have successfully made from the simple valorisation of Fe-rich industrial waste from steel wire drawing, with addition of BaCO3 and heating in air to 1000 degrees C. The optimum ratio of Fe. Ba (producing 86 wt% BaM) was found to be 11: 1 (non-stoichiometric), and secondary phases of alpha-Fe2O3 (non-magnetic) and ZnFe2O4 (poorly antiferromagnetic) were always present. This material consisted of small submicron platelets. A hard magnetic ferrite was produced with Ms=48.6 A m(2) kg(-1) and H-c=211.5 kA m(-1). The highest density was achieved by sintering samples with Fe: Ba ratios of 11: 1 …