Search results for "Risa"
showing 10 items of 788 documents
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 …
Junceosides A-C, new triterpene saponins from Arenaria juncea.
2002
Three novel triterpenoid saponins, junceosides A (1), B (2), and C (3), together with two known saponins have been isolated from the roots of Arenaria juncea. Their structures were elucidated using a combination of homo- and heteronuclear 2D NMR techniques (COSY, TOCSY, NOESY, HSQC, and HMBC) and by FABMS. The new compounds were characterized as 3-O-alpha-L-arabinopyranosyl-(1-->2)-[beta-D-galactopyranosyl-(1-->3)]-beta-D-glucuronopyranosylgypsogenin-28-O-beta-D-glucopyranosyl(1-->3)-[beta-D-xylopyranosyl-(1-->4)]-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-fucopyranoside (1), 3-O-alpha-L-arabinopyranosyl-(1-->2)-[beta-D-galactopyranosyl-(1-->3)]-beta-D-glucuronopyranosylgypsogenin-28-O-beta-D-x…
L'appropriation par l'entreprise partenaire des résultats d'une thèse CIFRE : exemple d'une recherche portant sur la formation initiale des sapeurs-p…
2023
Innovative “Green” and Novel Strategies for the Extraction of Bioactive Added Value Compounds from Citrus Wastes—A Review
2017
Citrus is a major processed crop that results in large quantities of wastes and by-products rich in various bioactive compounds such as pectins, water soluble and insoluble antioxidants and essential oils. While some of those wastes are currently valorised by various technologies (yet most are discarded or used for feed), effective, non-toxic and profitable extraction strategies could further significantly promote the valorisation and provide both increased profits and high quality bioactives. The present review will describe and summarize the latest works concerning novel and greener methods for valorisation of citrus by-products. The outcomes and effectiveness of those technologies such a…
The identity type weak factorisation system
2008
We show that the classifying category C(T) of a dependent type theory T with axioms for identity types admits a non-trivial weak factorisation system. We provide an explicit characterisation of the elements of both the left class and the right class of the weak factorisation system. This characterisation is applied to relate identity types and the homotopy theory of groupoids.
Comprehensive analysis of forty yeast microarray datasets reveals a novel subset of genes (APha-RiB) consistently negatively associated with ribosome…
2014
Background The scale and complexity of genomic data lend themselves to analysis using sophisticated mathematical techniques to yield information that can generate new hypotheses and so guide further experimental investigations. An ensemble clustering method has the ability to perform consensus clustering over the same set of genes from different microarray datasets by combining results from different clustering methods into a single consensus result. Results In this paper we have performed comprehensive analysis of forty yeast microarray datasets. One recently described Bi-CoPaM method can analyse expressions of the same set of genes from various microarray datasets while using different cl…
Quelles nuits, pour quels territoires ?
2015
International audience; Quelles nuits, pour quels territoires ?
La valorisation des compétences de base sur le marché du travail français
2013
D’après la théorie du capital humain, les individus sont rémunérés selon leur productivité, productivité qui dépend elle-même du niveau de diplôme ou du nombre d’années d’études. Mais à l’heure où l’éducation certifiée est discutée comme filtre, qu’en est-il de la valorisation des compétences, notamment de base, sur le marché du travail français ? Alors que de nombreuses recherches ont déjà été réalisées à ce sujet (dans les pays anglo-saxons principalement), aucune n’a encore été conduite sur cette thématique en France. Cette présente étude cherche alors à déterminer, via un modèle d’Heckman en deux étapes, dans quelle mesure l’accès à l’emploi et les salaires sont expliqués par le niveau …
«Nomina sunt consequentia rerum» anche nella controversia sul danno al concepito per malformazioni genetiche. Il punto dopo le Sezioni unite, 22 dice…
2016
La nota commenta la sentenza delle Sezioni unite del 22 dicembre 2015, n. 25767 sulla controversia questione del danno c.d. da nascita indesiderata e del c.d. danno da vita indesiderata. L'autore sottopone ad analisi la sentenza alla luce dei precedenti della medesima corte, soffermandosi sul problema della distribuzione dei temi di prova in sede di giudizio di responsabilità per violazione da parte del medico dell'obbligo di informare la paziente, sul dilemma dello status giuridico del concepito e infine sul tema delicatissimo della sussistenza o meno di un danno da malformazioni genetiche, indicato anche come c.d. danno da vita indesiderata.
Concilio Vaticano II e progetto urbano. Le chiese di San Raffaele Arcangelo e San Giovanni Evangelista a Palermo
2015
To begin once again a moral and economic duty. Italy, after Second World War: according to Fanfani and Tupini’s laws (1949), INA-casa and its procuring enti- ties’ ventures made a motor of urban renewal from the enthusiasm and the commitment of many entrepreneurs and public administrators. In Palermo, the agricultural lands began to include new neighbourhoods designed as part of the reconstruction after the bombardment of the old city, which had to be restored. Soon big private capital had been involved also coming from «people until that time unrelated to building entre- preneurship» «many landowners located in the surroun- dings of the historic city sold the farthest part of it, applying …