DSpace Collection:https://hdl.handle.net/20.500.12177/992024-03-28T12:53:15Z2024-03-28T12:53:15ZExtraction et Identification de Quelques Polyphénols du Chocolat Noir Commercial (Cote d’or)Kouamé, Bosson AntoineBoua, Boua BensonMamyrbékova-békro, Janat AkhanovnaBekro, Yves-Alainhttps://hdl.handle.net/20.500.12177/107102023-07-05T03:05:48Z2013-03-01T00:00:00ZTitle: Extraction et Identification de Quelques Polyphénols du Chocolat Noir Commercial (Cote d’or)
Authors: Kouamé, Bosson Antoine; Boua, Boua Benson; Mamyrbékova-békro, Janat Akhanovna; Bekro, Yves-Alain
Abstract: A partir de 300 g de chocolat noir commercial à 86% de cacao de la marque Côte d‘or, nous avons obtenu un concentré de polyphénols (Cp) de masse 1,37 g soit un rendement de 0,45 %. L‘analyse de Cp au moyen de CLHP (phase inverse) en mode analytique, suivi d‘une co-injection avec quelques références nous a permis d‘identifier des composés phénoliques naturels telles que la (-)-épicatéchine, la (+)-catéchine, les procyanidines B2 et B5. Un composé non natif à savoir la (-)-catéchine a été également identifié.; Abstract :
From 300 g of commercial dark chocolate with 86% cocoa from the Côte d'Or brand, we obtained a concentrate of polyphenols (Cp) with a mass of 1.37 g, i.e. a yield of 0.45%. The analysis of Cp by means of HPLC (reverse phase) in analytical mode, followed by a co-injection with some references allowed us to identify natural phenolic compounds such as (-)-epicatechin, (+) -catechin, procyanidins B2 and B5. A non native compound namely (-)-catechin has also been identified.2013-03-01T00:00:00ZExistence and uniqueness of a hybrid system with variable coefficientsYapi, Serge Alain JoresseYoro, GozoBomisso, G. Jean-MarcTouré, K. Augustinhttps://hdl.handle.net/20.500.12177/62012021-12-07T03:00:31Z2021-09-01T00:00:00ZTitle: Existence and uniqueness of a hybrid system with variable coefficients
Authors: Yapi, Serge Alain Joresse; Yoro, Gozo; Bomisso, G. Jean-Marc; Touré, K. Augustin
Abstract: In this paper we consider a long flexible Euler-Bernoulli beam with boundary conditions imposed at the two ends, the resulting model being called hybrid system. The beam is hybrid in the sense that it holds both rigid and elastic motions. Our main result is to show the existence and uniqueness of the weak solution of close-loop system. The closed-loop system stability is shown through Lyapunov-based analysis2021-09-01T00:00:00ZClassification and Reduction of BifiltrationsIdrissa, Yayahttps://hdl.handle.net/20.500.12177/53842021-10-08T03:00:27Z2018-11-15T00:00:00ZTitle: Classification and Reduction of Bifiltrations
Authors: Idrissa, Yaya
Abstract: In this paper, we define the classes of bifiltrations and we make
their classification. We characterize (I; J)-good bifiltrations, a concept
of β-reduction of bifiltrations is introduced.2018-11-15T00:00:00ZOn a reduction criterion for bi ltrations in terms of their generalized Rees ringsYaya, IdrissaDaouda, Sangarehttps://hdl.handle.net/20.500.12177/53832021-10-08T03:00:27Z2017-01-01T00:00:00ZTitle: On a reduction criterion for bi ltrations in terms of their generalized Rees rings
Authors: Yaya, Idrissa; Daouda, Sangare
Abstract: In this paper, a concept of reduction of bifiltrations is introduced.
Similarly to the case of ltrations, a reduction criterion for bifiltrations in some
class in terms of their generalized Rees rings is given.2017-01-01T00:00:00Z