Publications (188)
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Impact of sheet erosion mechanisms on organic carbon losses from crusted soils in the Sahel
S.B. Maïga-Yaleu, P. Chivenge, H. Yacouba, I. Guiguemde, H. Karambiri, O. Ribolzi, A. Bary, V. ChaplotSoil surface crusting influences water infiltration and runoff but its impact on soil organic carbon (SOC) losses by sheet erosion is largely unknown. Because there are different mechanisms of sheet erosion, from raindrop detachment and transport by raindrops interacting with flow (RIFT), to...
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Propriétés technologiques de carreaux céramiques à base d’argiles : influence d’un talc nature
Moustapha Sawadogo, Lamine Zerbo, Mohamed Seynou, Brahima Sorgho, Raguilnaba OuedraogoLocal clay from Burkina Faso has been used as a basic
raw material in the formulation of ceramic tile with a natural talc (0 - 4%
wt) as a flux. The used sintering temperatures are between 950 and 1100 °C
with one hour as hold at heating rate of 5 °C·min-1. The different
technological...
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Caractérisations physico-chimiques des ustensiles de cuisine (marmites artisanales) fabriqués au Burkina Faso.
Jacques Sawadogo1*, Moussa Bougouma1, Tambi Ramdé1,Guel Boubié1, Lucien Désiré Bonou1, Marie-Paule Delplancke Ogletree2, Jean Boukari LegmaDans le cadre de la valorisation des matériaux d’origine artisanale du Burkina Faso, quelques échantillons d’ustensiles de cuisine (marmites artisanales) prélevés dans les différentes zones de la ville de Ouagadougou ont subi une série d’analyses chimiques et physico-chimiques. Les...
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Inhibition of the Cu65/Zn35 brass corrosion by natural extract of Camellia sinensis
Tambi Ramdé, Stefano Rossi, Caterina ZanellaIn this work, the corrosion inhibition of brass was studied using natural plant extract, Camellia sinensis, in 0.1 M Na2SO4 solutions with pH 7 and pH 4. Electrochemical techniques (potentiodynamic polarization, electrochemical impedance spectroscopy) and scanning electron microscopy (SEM) were...
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Étude d’une série de phtalocyanines de cobalt et de zinc par chronoampérométrie et chronocoulométrie
Seydou Ouedraogo, Mabinty Bayo-Bangoura, Bertrand Ouemega,Karifa Bayo, Boubié GuelNous avons étudié une série de complexes de la phtalocyanine (Pc) : CoPc, biCoPc, CoPcF8, F12biCoPc,
ZnPc, biZnPc, ZnPcF8 et F12biZnPc par chronoampérométrie et chronocoulométrie sur une électrode de carbone vitreux dans le DMSO. Cette étude confirme les résultats déjà en notre...
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Ageing of clay and clay–tannin geomaterials for building
I. Keita a, B. Sorgho b, C. Dembele a, M. Plea a, L. Zerbo b, B. Guel b, R. Ouedraogo b, M. Gomina c, P. Blanchart d,Clay geomaterials for building are clay sand mixture with controlled microstructural characteristics. The macroscopic strength mostly results from the binding property of clays and can be increased with the addition of various additives as tannins from plants. Such an improvement is due to the...
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Etude de l’adsorption d’ions fluorures par une bentonite du Niger
Marou Gourouza , Ibrahim Natatou, Karifa Bayo , Anne BoosRésumé : Nous avons étudié la capacité de défluoruration d’une argile de Sabon-karré de la région de Tahoua en
République du Niger. L’argile brute n’adsorbe pas les fluorures, il en libère au contraire. La calcination de cette argile, à
700°C pendant 6 h, a permis la...
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Refractory bricks based on Tikaré (Burkina Faso) kaolinitic raw clay material
Mohamed Seynou, Pierre Flament, Moustapha Sawadogo, Jacques Tirlocq, Raguilnaba OuedraogoA raw clay material deposit in Burkina Faso has been used for refractory bricks production in the lab. The
extruded raw clay material has been fired at 1400°C to produce a chamotte grog that has been crushed into different
particle sizes. These have been mixed with 14%.wt of the raw clay...
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In vitro antifungal activity of flavonoid diglycosides of Menthapiperita and their oximes derivatives against two cereals fungi
Ousmane Ilboudo, Schémaeza Bonzi, Issa Tapsoba, Irénée Somda, Yvonne L. Bonzi-CoulibalyFlavonoids due to their various interesting biological properties such as antifungal activity were investigated in Mentha piperita leaves. The butanolic fraction obtained from the hydro-alcoholic crude extract of M. piperita is rich in flavonoids; it reduced in vitro the mycelium growth of Phoma...
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Soil crusting impact on soil organic carbon losses by water erosion
S. Maïga-Yaleu, I. Guiguemde, H. Yacouba, H. Karambiri, O. Ribolzi, A. Bary, R. Ouedraogo, V. ChaplotThe Sahelian region, characterized by erratic, heavy rainfalls and low soil organic carbon (SOC) stocks, is highly vulnerable to land degradation. While water erosion is recognized as being a main mechanism of SOC losses, little research has yet been done to investigate the role which soil...
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Comportement thermique de céramiquesà base d’argiles naturelles du Burkina Faso
Lamine Zerbo1*, Brahima sorgho1 , Sié Kam2 , Julien Soro3 , Younoussa Millogo1 , Boubié Guel4 , Karfa Traoré1 , Moussa Gomina5 , Philippe Blanchart3Le comportement thermiquede céramiques élaborées à partir d’argiles locales du Burkina Faso a été caractérisé dans cette étude. L’argile SIT est composée majoritairement de montmorillonite,de quartz, d’albite de kaolinite et d’illite, tandis que l’argile GAR contient les...
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Growth and characterization of large, high quality MoSe2 single crystals
Moussa Bougouma ,Abdelkrim Batan , Boubie´ Guel , Tiriana Segato , Jean B. Legma , Francois Reniers , Marie-Paule Delplancke-Ogletree , Claudine Buess-Herman , Thomas Doneux ,MoSe2 single crystals were grown by chemical vapor transport using TeCl4 as transport agents in the
temperature gradient 1020–980 1C. They were characterized by scanning electron microscopy (SEM),
optical microscopy, image analysis coupled with SEM, microanalysis by SEM-EDX, X-ray...
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Growth and characterization of large, high quality MoSe2 single crystals
Moussa Bougouma ,Abdelkrim Batan , Boubie´ Guel , Tiriana Segato , Jean B. Legma , Francois Reniers , Marie-Paule Delplancke-Ogletree , Claudine Buess-Herman , Thomas Doneux ,MoSe2 single crystals were grown by chemical vapor transport using TeCl4 as transport agents in the
temperature gradient 1020–980 1C. They were characterized by scanning electron microscopy (SEM),
optical microscopy, image analysis coupled with SEM, microanalysis by SEM-EDX, X-ray...
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Analysis of flavonoid diglycosides in leaves of Mentha piperita L by MALDI-MS/MS and LC-MS
Ousmane Ilboudo, Issa Tapsoba, Igor W Ouedraogo, Pascal Gerbaux Yvonne L. Bonzi-CoulibalyFlavonoids represent a large group of natural compounds with an impressive variety of biological activities, such as antioxidant [1], anti-inflammatory [2], antiallergic [3], antiplasmodial [4], anti-cancer [5], antimicrobial [6], antifungal [7], and neuroprotective [8] properties. Many...
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CYCLIC VOLTAMMETRY AND REDUCTION MECHANISTIC STUDIES OF STYRYLPYRYLIUM PERCHLORATES
Jean Claude W. Ouédraogo1, Issa Tapsoba1, Boubié Guel2, Faustin Sié Sib1 and Yvonne Libona Bonzi-Coulibaly1*The reduction and oxidation potentials of methylated 4-styrylpyrylium and 6-styrylpyrylium perchlorates have been evaluated using cyclic voltammetry, in comparison to their non-methylated derivatives values. The reduction peak of all studied compounds remained chemically irreversible. The...