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Le dépôt numérique grenier du savoir du Burundi est une collection de documents scientifiques produits par les chercheurs de l'Université du Burundi, y compris des mémoires, des thèses, des revues, des articles, des rapports techniques, etc. Il s'agit du dépôt institutionnel officiel de l'Université du Burundi

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Grenier du Savoir du Burundi

Recent Submissions

Mécanismes de réguralisation des conflits dans une zone multi-éthnique et multi-culturelle : Le cas de à zone Buyenzi
(UB, FLSH, 2003-11)
Niyondiko, Désiré
;
Sous la direction de : Professeur Julien Nimubona
De la décision à l’exécution d’une politique linguistique. Cas de la publicité au Burundi
(Edition Observatoire europeen du plurilinguisme, 2021-07)
Bigirimana, Clément
;
Nduwingoma, Pierre
;
Ntiranyibagira, Constantin
In Burundi, legislation clearly specifies the status of each of the languages involved. However, users of these languages do not respect the law, as it specifies, although it is often said that "no one is supposed to ignore the law". The transgression of the law on the status of languages in Burundi is generally noticeable in advertising posters/signs, sometimes with spelling, syntactic or even semantic shortcomings or complexities. These posters being intended for everyone, therefore open to any criticism, leaves the observer or any informed person to ask himself the question of the languages in use in Burundi and their degrees of "mastery" by the authors of the advertisements. It is then through some posters / advertising signs found in the city of Bujumbura that we will demonstrate the inconsistency between the decision and the execution of language policy.
Effect of media additives on biomineralization in primary cultures of mantle cells of Paphia malabarica
(European Journal of Biotechnology and Bioscience, Volume 9, Page No. 29-34, 2021-07)
Niyoyitungiye, Lambert
;
Ndayisenga, Marc
;
Buhungu, Simon
;
Bararunyerets, Prudence
Media additives are believed to influence biomineralization in vitro mediated by mantle cells of P. malabarica. CaCl2 and MgCl2 were tested as media additives in the present study using 2 x L-15 solution to establish primary cultures for evaluation of their effect on biomineralization. Primary culture inoculated with media composition without additives was also designed to serve as control experiment. Results were collected through an inverted microscope-Olympus (Model no. CKX41). Our results demonstrate that both CaCl2 and MgCl2 additives influence biomineralization by increasing the rate of crystal deposition and the number of crystals in mantle cells primary cultures of Paphia malabarica.
Effect of wastewater phytoremediation process on the chemical composition of Eichhornia crassipes and Pistia stratiotes.
(IJGHC, Vol.10, No.4, 301-312, 2021-09)
Ntakiyiruta, Pierre
;
Ossey Clovis Seka
;
Bi Gouessé Henri Briton
;
Nahimana, David
;
Kouassi, Edmond Konan
Eichhornia crassipes and Pistia stratiotes are known for their ability to remove pollutants from wastewater. However, the latter often represent an external aggression towards these two plants. The objective of this study is to investigate the variation in the elemental and secondary metabolite composition that are secreted by these two plants to deal with external aggressions. The different secondary metabolites were identified and quantified, according to the standard procedure, in Pistia stratiotes and Eichhornia crassipes species from two countries (Burundi and Côte d’Ivoire). The results of the phytochemical screening revealed the presence of flavonoids, tannins and polyphenols and the absence of sterols, alkaloids and terpenoids. The quantitative analysis revealed a high concentration of total flavonoids compared to tannins and polyphenols, regardless of the plant used (Eichhornia crassipes or Pistia stratiotes) or the country in which it was harvested. Moreover, the species harvested in Burundi are richer in these metabolites than those harvested in Côte d'Ivoire. Elemental analysis revealed the presence of macroelements (S, Na, Mg, Cl, P and K), microelements (Fe, Zn and Br) and trace elements (Mn, Si and Al).
La conquête du Ruanda et de l'Urundi ( 1916 )
(UB, FLSH, 1976)
Mpfubusa David
;
Sous la direction du : Professeur J. Stengers