Publications (5614)
ARTICLE
Electrochemical reduction of N-thioamidoimidates: application to the synthesis of thiazolo[5,4-d]thiazoles
I. TAPSOBA
The reduction of N-thioamidoimidates (1) has been examined in aprotic media at a mercury electrode. As shown by cyclic voltammetry at fast scan rates and controlled potential electrolysis, an overall irreversible one electron transfer is followed by a rapid second order chemical reaction leading to a dimer which involves to thiazolo [5, 4-d] t(...)
Mots clés non renseignés
ARTICLE
Perception paysanne de la dégradation de l'environnement sur le pourtour du lac du barrage de la Kompienga (Burkina Faso)
DIPAMA Jean-Marie
L'implantation du barrage hydroélectrique sur le cours de la Kompienga a engendré une dégradation de l'environnement sur l'ensemble du bassin versant. Par ailleurs, la présence d'un important plan d'eau et les potentialités agro-écologiques sont à l'origine d'important flux migratoires vers la zone de la Kompienga. La plupart des migrants, don(...)
Burkina Faso, Kompienga, barrage, environnement, perception paysanne
ARTICLE
Les impacts environnementaux des scenarios d'approvisionnement du centre régional de Ouagadougou en énergie électrique
DIPAMA Jean-Marie
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Mots clés non renseignés
ARTICLE
SILICON SOLAR CELL RECOMBINATION PARAMETERS DETERMINATION UNDER FREQUENCY MODULATED WHITE LIGHT USING THE SHORT CIRCUIT CURRENT PHASE
I. Zerbo, Z. Koalaga, F. I. Barro, F. Zougmore, A.L.Ndiaye, A. Diao, G. Sissoko
The purpose of this work is to present a new technique for determining recombination parameters of excess minority
carrier in a multicristallin silicon solar cell under frequency modulated multispectral light.
The complex photocurrent density Jph (ω, L) is presented as a calibrated function of the diffusion length L. Taking the junction reco(...)
Frequency modulation, Solar cell, Recombination parameters, Amplitude, Phase
ARTICLE
Prévalence du déficit en Glucose-6-Phosphate Déshydrogénase (G6PD) et de la Drépanocytose chez les nouveau-nés à Ouagadougou (Burkina Faso)
E. Kafando, M. Sawadogo, E. Youl, E. Kabré, E. Nacoulma
Le déficit en G6PD et la drépanocytose sont deux pathologies héréditaires du globule rouge responsables d'anémie hémolytiques. ces deux affections souvent associées sont fréquentes dans la population africaine où elles se superposent aux zones d'endémie palustre. l'objectif de notre étude était de déterminer la prévalence de ces deux pathologi(...)
déficit en G6PD, drépanocytose
ARTICLE
Chemical composition and antibacterial activities of the essential oils of Lippia chevalieri and Lippia multiflora from Burkina Faso
I.H.N. Bassole , A.S. Ouattara , R. Nebie , C.A.T. Ouattara , Z.I. Kabore , S.A. Traore
The chemical composition of the essential oils of Lippia chevalieri and Lippia multiflora obtained from the air-dried leaves by hydrodistillation were analysed using GC and GC–MS. L. chevalieri and L. multiflora belonged to thymol/p-cymene/2-phenyl ethylpropionate and thymol/p-cymene/thymyl acetate chemotypes, respectively. The essential oils we(...)
Lippia chevalieri; Lippia multiflora; Verbenaceae; Essential oils; Antibacterial
ARTICLE
Les implications écologiques du barrages de la Kompienga sur le bassin versant
DIPAMA Jean-Marie
Pour réduire sa consommation de produits pétroliers et améliorer son potentiel énergétique, le Burkina Faso a entrepris, en 1985, la construction d'un barrage hydroélectrique sur la Kompienga. Le bassin versant couvre 5 945 km² et la végétation y est du type savanicole, avec des forêts galeries assez denses le long des principaux axes de drain(...)
Burkina Faso, Kompienga, bassin versant, impact environnemental, sol, végétation, faune
ARTICLE
Antimalarial activity of Sida acuta Burm. f. (Malvaceae) and Pterocarpus erinaceus Poir. (Fabaceae)
KAROU, D., Mamoudou H. DICKO, Sanon, S., Jacques, SIMPORE, Traoré, A. S
Among strategies to combat malaria, the search for new antimalarial drugs appears to be a priority. Sheering for new antimalarial activities, four plants of the traditional medicine of Burkina Faso: Combretum micranthum, Khaya senegalensis, Pterocarpus erinaceus and Sida acuta, were tested in vitro on fresh clinical isolates of Plasmodium falc(...)
Malaria, ,Plasmodium falciparum, ,Sida acuta, , Pterocarpus erinaceus
ARTICLE
Antimalarial activity of Sida acuta Burm. f.(Malvaceae) and Pterocarpus erinaceus Poir.(Fabaceae)
K. SIMPORE
Among strategies to combat malaria, the search for new antimalarial drugs appears to be a priority. Sheering for new antimalarial activities, four plants of the traditional medicine of Burkina Faso: Combretum micranthum, Khaya senegalensis, Pterocarpus erinaceus and Sida acuta, were tested in vitro on fresh clinical isolates of Plasmodium falc(...)
Mots clés non renseignés
ARTICLE
Pregnancy-associated glycoprotein concentrations during pregnancy and the postpartum period in Azawak Zebu cattle
Moussa Zongo, Were Pitala, Hamidou Boly, Laya Sawadogo, Jean-FrancËois Beckers , Noelita Melo de Sousa, Jose Ricardo de Figueiredo, Paulo Bayard Dias GoncËalves, Bouchra El Amiri, Zsolt PereÁnyi, Jean-FrancËois Beckers
RIA systems were developed and used to measure pregnancy-associated Glycoprotein (PAG) concentrations during gestation and the postpartum period in Azawak Zebu cows. Twelve females were palpated per rectum and diagnosed as pregnant. Blood samples were taken at 5±10-day intervals from approximately Week 8 of gestation until Week 10 postpartum ((...)
Azawak Zebu; PAG; RIA; Gestation; Postpartum
ARTICLE
Directional spectral emissivities of clear skies
D. BATHIEBO
From the total spectral emissivities determined for clear skies in a preceding paper their directional values are obtained. The Bliss formulation still used for this doing is justified. The results point out the inefficiency of a large band around the horizon for cooling purposes. As an application, a natural focusing system to obtain dew is e(...)
Mots clés non renseignés
ARTICLE
Numerical study of natural convection drying of coffee grains contained in a vertical channel with constant heat flux on walls
D. BATHIEBO
We present a numerical study of the drying by natural convection of coffee grains contained between two vertical walls subjected to a uniform heat flux. The coffee grains bed is assumed to be in a porous medium, heat and mass transfers which are described by the classical natural convection equations and the Darcy-Brinkman momentum equation. T(...)
Mots clés non renseignés
ARTICLE
Bosea minatitlanensis sp. nov., a strictly aerobic bacterium isolated from an anaerobic digester
Aboubakar S. Ouattara, Essokazi A. Assih, Sebastien Thierry, Jean-Luc Cayol, Marc Labat, Oscar Monroy and Herve´ Macarie
A strictly aerobic, mesophilic bacterium, strain AMX 51T, was isolated from anaerobic digester sludge. Cells were Gram-negative, motile, non-sporulating, straight to curved rods with one polar flagellum. The isolate had phenotypic traits of the genus Bosea, including cellular fatty acid and substrate utilization profiles. Physiological charact(...)
Bosea minatitlanensis sp. nov., strictly aerobic bacterium, anaerobic digester, cellular fatty acids, Mexico
ARTICLE
Electrochemical synthesis of [1, 2, 4] oxadiazol-3-one derivatives: anodic oxidation of N-amidoimidates
I. TAPSOBA
Anodic oxidation of N-amidoimidates was performed in acetonitrile+ lithium perchlorate as the electrolyte solution at platinum using controlled potentials. The products, isolated in good yield after oxidation of the amide group followed by deprotonation and intramolecular cyclization reactions, were identified as [1, 2, 4] oxadiazol-3-one deri(...)
Mots clés non renseignés