Publications (5632)
ARTICLE
Validation of gentamicin congeners using HPLC with electrochemical detection: Comparison with fluorimetric detection
Touridomon Issa Some, Rasmané Semdé, Moustapha Ouedraogo, Karim Amighi, Pierre I. Guissou, Pierre Duez and Jacques Dubois
OPA is often used as an off-line derivatisation agent for fluorimetric detection in gentamicin analysis. As, in general, electrochemical detection is more sensitive than fluorimetric detection, the analysis of gentamicin as its OPA derivatives by high-performance liquid chromatography and electrochemical detection is proposed. The derivatisati(...)
Mots clés non renseignés
ARTICLE
Validation d'une méthode de dosage des caroténoïdes par CLHP: application à la détermination de teneur en caroténoïdes dans dix variétés de patates douces (Ipo...
Issa T. Somé , Marie-Noël Zagré , Patrick E. Kafando , Mohamed Ag Bendech , Shawn K. Baker , Hélène Deslile , Pierre I. Guissou
Résumé La carence en vitamine A (CVA) concerne plus de 250 millions d'enfants âgés de moins de cinq ans dans le monde. Cette carence et ses conséquences sanitaires sont surtout ressenties dans les pays en voie de développement. Trois approches complémentaires sont préconisées pour remédier aux conséquences de la carence en vitamine A: la suppl(...)
Mots clés non renseignés
ARTICLE
Electroxidation of ortho-substituted aromatic amines mechanistic investigation
I. TAPSOBA
The anodic oxidation of ortho-substituted aromatic amines has been investigated at a platinum electrode in aprotic solvent by cyclic voltammetry and controlled potential coulometry. In neutral medium, the radical cation stemming from the electron transfer undergoes deprotonation and a head-to-head coupling reaction leading to a dimer, which ev(...)
Mots clés non renseignés
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
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