Publications (5607)
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
ARTICLE
Préparation et caractérisation par Rayons X, par spectrométries UV- visible, IR, Mössbauer et RPE de composés thiolates de la phtalocyanine de fer
M. BAYO-BANGOURA, K. BAYO, G. V. OUEDRAOGO, J. C. MOSSAYAN, G. TERZIAN, D. BENLIAN.
Iron(II) phthalocyanine complexes with SR (R = CH3, CH2C6H5, C6H5, C6H4-pNO2) have been prepared in solid form. These complexes have been characterised by X-Ray diffraction, infrared, electronic, Mössbauer and EPR spectrometries.
The X-Ray diffraction of powder spectre show the characteristic lines of Fe-S entity. In infrared spectre, the com(...)
Iron(II) phthalocyanine, thiolates complexes, characterisation
ARTICLE
Preparation and analysis by UV-Vis of zinc phthalocyanine complexes
K. Bayo, J.C. Mossoyan , G.V. Ouedraogo
We have prepared and isolated a series of zinc phthalocyanine complexes (ZnPc, ZnPcF8, biZnPc, F12biZnPc). These compounds have been
analyzed by electronic spectrometry. The analysis of results demonstrates that the importance of intramolecular interactions in the binuclear
species depends on the nature of the peripheral substituents.
Keywo(...)
Keywords: Zinc; Phthalocyanine; Binuclear complexes; UV-Vis
ARTICLE
"The Folktale Archetype in Ama Aidoo’s No Sweetness Here and Other Stories"
KIEMA, Alfred
En utilisant la structure du conte selon le modèle de Vladimir Propp. , Ama Ata Aidoo allie oralité et écriture pour traiter des thématiques contemporaines dans un monde contemporain et ce faisant créer une esthétique de la nouvelle originale
Folktale, , narrative, , plot, , orality, , archetype
ARTICLE
Spectres IR de monophtalocyanines et de biphtalocyanines de zinc et de cobalt et de leurs dérivés halogénés.
K. BAYO , G. V. OUEDRAOGO, K. BENIHYA, G. TERZIAN, J.C. MOSSOYAN
Nous avons préparé et étudié une série de complexes de la
phtalocyanine par spectrométrie d'absorption infra-rouge. Les composés
étudiés sont: MPc, biMPc, MPc(X)8, MPc(X)16, (X)12biMPc et biH2Pc
avec M = Zn ou Co et X = F, Cl ou CN. Du fait du haut degré de symétrie
de la molécule de la phtalocyanine et des analogies de structure entre
mo(...)
Phthalocyanine; biphthalocyanine; zinc; cobalt; infrared spectra
ARTICLE
Plasma chitotriosidase activity in acute Plasmodium falciparum malaria
K. SIMPORE
Background: Chitotriosidase is a functional chitinase secreted by activated macrophages. It is encoded by a gene located on chromosome 1q31-32, whose mutations may be responsible for chitotriosidase deficiency, encountered in almost 6% of Caucasian population. Objective: This study reports firstly plasma chitotriosidase activity in African chi(...)
Mots clés non renseignés
ARTICLE
A New Route of Synthesis of 3a, 6a-Dihydro-oxazolo [5, 4-d] oxazole Derivatives
I. TAPSOBA
The electrochemical reduction of N-acylated imidates of a typical structure has been investigated by cyclic voltammetry and controlled potential electrolysis at mercury electrode in aprotic solvent. Electrodimerization occurs at the first wave and leads to the formation of 3a, 6a-dihydro-oxazolo [5, 4-d] oxazole 2 in good yields. Scheme 1.
Mots clés non renseignés
ARTICLE
Zymography of Monophenolase and o-Diphenolase Activities of Polyphenol Oxidase
DICKO Mamoudou. H., HILHORST, R., GRUPPEN, H., LAANE, C., van BERKEL, W. J. H. and VORAGEN, A. G. J
A new procedure for the zymography of monophenolase and o-diphenolase activities of polyphenol oxidase (PPO), and peroxidase (POX) is proposed using a highly sensitive, chromogenic nucleophile 3-methyl-2-benzothiazolinone hydrazone (MBTH), which traps quinones. The procedure allowed the distinction between PPO isoenzymes from sorghum and mushr(...)
polyphenol oxidase, peroxidase, zymography, activity staining, isoenzymes, mushroom