ProGRES

ARTICLE

ÉTUDE MORPHOLOGIQUE AU MICROSCOPE ELECTRONIQUE A BALAYAGE DE QUELQUES MICROALGUES DULÇAQUICOLES DU RESERVOIR DE BAGRE (PROVINCE DU BOULGOU, BURKINA FASO)

Frédéric ZONGO, Bilassé ZONGO, Adama OUÉDA, Joseph I. BOUSSIM, Gérard MASCARELL Alain COUTÉ

L’observation au microscope électronique à balayage des microalgues du réservoir de Bagré a permis d’observer des détails morphologiques de 12 espèces rencontrées. Ces informations morphologiques permettent de compléter celles obtenues au microscope photonique. À partir de nos observations au microscope photonique et au microscope électron(...)

micro-algues, microscope électronique à balayage, Réservoir de Bagré, Burkina Faso

ARTICLE

NOUVEAUX TAXA DE MICRO-ALGUES DULÇAQUICOLES POUR LE BURKINA FASO (AFRIQUE DE L’OUEST) : II - Cyanophyta, Heterokontophyta, Euglenophyta

Frédéric ZONGO, Bilassé ZONGO, Adama OUÉDA, Joseph I. BOUSSIM, Alain COUTÉ

L’étude taxonimique des micro-algues échantillonnées dans le réservoir de Bagré (Burkina Faso, Afrique de l’Ouest), a permis de signaler, 44 taxa de micro-algues dulçaquicoles appartenant aux Euglenophyta, Heterokontophyta et Cyanophyta. Les Euglenophyta sont représentées par 28 taxa (63,6%). Les Cyanophyta comprennent 14 taxa (31,8%) et les H(...)

micro-algues, dulçaquicoles, taxinomie, réservoir, Burkina Faso

ARTICLE

Electrochemical detection in a microfluidic device of oxidative stress generated by macrophage cells

Christian Amatore, Stéphane Arbault, Yong Chen, Cécile Crozatier and Issa Tapsoba

The release of reactive oxygen species (ROS) or reactive nitrogen species (RNS), ie, the initial phase of oxidative stress, by macrophage cells has been studied by electrochemistry within a microfluidic device. Macrophages were first cultured into a detection chamber containing the three electrodes system and were subsequently stimulated by th(...)

Mots clés non renseignés

ARTICLE

Continuous dependence of solutions to nonlinear elliptic-parabolic-hyperbolic problem in one dimension

S. Ouaro, B. K. Bonzi

We consider a nonlinear elliptic-parabolic-hyperbolic equation of the form: b(u)t−a(u,φ(u)x)x=f. We show the continuous dependence of the “mild solution” of the associated Cauchy problem with respect to the data a, f and v0 without Alt and Luckhaus structure condition.

Cauchy problem

ARTICLE

Carotenoids Content of Some Locally Consumed Fruits and Yams in Cameroon

Gouado Inocent, Aba Richard Ejoh, Touridomon Issa Some, Florian J Schweigert, Tchouanguep M.F

Vitamin A deficiency constitutes a public health problem in Cameroon. Data on provitamin A content of fruits locally consumed are scarce. To solve this nutritional problem, it is important to promote the consumption of yellow/orange fruits or green leafy vegetables which are rich sources of provitamin A. In order to achieve this, the carotenoi(...)

Mots clés non renseignés

ARTICLE

Changing Transition to Adulthood in Urban Burkina Faso

Calvès, Anne-Emmanuèle, Jean-François Kobiané et Edith Martel

Based on a unique retrospective survey conducted in 2000 with several cohorts of men and women in Burkina Faso, the study analyzes how the transition to adulthood in the two largest urban centers of the country has evolved over the past twenty years. Results show that both the timing and the nature of important social steps in the lives of mal(...)

Mots clés non renseignés

ARTICLE

Microfluidic modulus for convenient cell culture and screening experiments

I. TAPSOBA

We report on a microfluidic set-up for convenient biological experiments involving cell culture. The strategy is to use a patterned microfluidic cover plate, which can be reversibly bonded to a cell culture substrate, to achieve both long-term cell culture in parallel chambers and control of culture parameters in each chamber. The design is fu(...)

Mots clés non renseignés

ARTICLE

Contribution à l’étude des plantes médicinales utilisées dans les soins infantiles en pays San, Burkina Faso

Zerbo P., Millogo-RasolodimbyJ., Nacoulma-Ouédraogo O.G. et Van Damme P.

La présente étude synthétisée en 13 pages renfermant 04 tableaux, une figure et 42 références, a consisté à recenser les plantes médicinales et les recettes médicamenteuses utilisées dans les soins infantiles au Burkina Faso. À la suite d’enquêtes ethnobotaniques, 50 tradipraticiens de santé, ayant au moins 15 ans d’expérience ont été interrog(...)

Plantes médicinales, Ethnopharmacopée, Pédiatrie traditionnelle, Burkina Faso

ARTICLE

Influence of malaria on the serum levels of vitamin A, zinc and calcium of children in Douala-Cameroon

Gouado Inocent, A. O. Adebiyi, Leopold G Lehman,Touridomon Issa Some, Yolande Mbouyap, Joel Bertand Pankoui Mfonkeu, Aba Richard Ejoh, Felicité Tchouanguep Mbiapo

Malaria is an endemic parasitic disease that prevails particularly in warm tropical regions of the world. Micronutrient malnutrition such as vitamin A and iron deficiencies which is a public health problem in Cameroon is usually highly prevalent in malaria endemic areas. Characterizing the relationship between micronutrient status(...)

Malaria, vitamin A, zinc, calcium

ARTICLE

Influence of malaria on the serum levels of vitamin A, zinc and calcium of children in Douala-Cameroon

Gouado Inocent, Lehman Leopold Gustave, Some Issa T., Mbouyap Yolande, PankouiMfonkeu Joel Bertand, Ejoh Aba Richard and Tchouanguep Mbiapo Felicité

Malaria is an endemic parasitic disease that prevails particularly in warm tropical regions of the world. Micronutrient malnutrition such as vitamin A and iron deficiencies which is a public health problem in Cameroon is usually highly prevalent in malaria endemic areas. Characterizing the relationship between micronutrient status (vitamin A,(...)

Mots clés non renseignés

ARTICLE

Structure and emplacement of granite plutons in the Paleoproterozoic crust of Eastern Burkina Faso: rheological implications

Vegas, N., Naba, S., Bouchez J.L., Jessell, M

The Fada N′Gourma area in Burkina Faso is underlain by Paleoproterozoic rocks that make the northeastern West-African Craton. This region is composed of NE-trending volcano-sedimentary belts and foliated tonalites, affected by several shear zones. A generation of younger, ∼2100 Ma-old, non-foliated biotite-bearing granites intrudes the former(...)

Burkina Faso ; Paleoproterozoic ; Granite emplacement ; Crust rheology ; Magnetic fabrics

ARTICLE

E´ tude voltame´trique des sels de styryl-2 et styryl-4 pyrylium. 1re partie

Boubie´ Guel*, Dihourahouni Tountian, Yvonne Bonzy-Coulibaly, H. Traore´, Faustin Sie´ Sib

Voltammetric study of styryl-2 and styryl-4 pyrylium salts. Part 1. The redox properties of diphenyl-2,6 styryl-4 and diphenyl-4,6 stryl-2 pyrylium salts have been studied by means of cyclic voltammetry. These salts disclose irreversible reduction and oxidation steps that are characterised by one reduction peak and two oxidation peaks, respec(...)

Cyclic voltammetry; Diphenyl-2, 6 styryl-4 and diphenyl-4

ARTICLE

Carbon and nitrogen enhancement in Cambisols and Vertisols by Acacia spp. in eastern Burkina Faso: Relation to soil respiration and microbial biomass

S. TRAORE

The current study tested the contribution of native Acacia species of the Sudano-Sahelian zone to improving organic carbon and nitrogen level in Cambisols and Vertisols with specific focus on variation in microbial biomass (C mic), soil basal respiration (C resp) and metabolic quotient (qCO 2). The results show enrichment in total organic carb(...)

Mots clés non renseignés

ARTICLE

Traitements insecticides et dynamique des populations de Bemisia tabaci Gennadius en culture cotonnière au Burkina Faso

Résumé Considéré dans le passé comme un ravageur secondaire, Bemisia tabaci Gennadius (Homoptera: Aleyrodidae) est devenu depuis la campagne agricole 1997-1998 un des ravageurs importants en culture cotonnière au Burkina Faso. La mise en place d'une méthode de lutte efficace contre B. tabaci passe nécessairement par une meilleure connaissance(...)

Mots clés non renseignés

ARTICLE

Étude des interactions intramoléculaires dans les bimétallophtalocyanines par électrochimie et par spectroélectrochimie

Karifa Bayo, Mabinty Bayo-Bangoura, Mireille Mossoyan-Deneux, Doris Lexa, Guy Venance Ouédraogo.

Nous avons préparé´ et isole´ sous forme solide une série de complexes de la phtalocyanine (Pc) de zinc : ZnPc, F8ZnPc, biZnPc, F12biZnPc. Ces composés ont été´ étudiés par voltamétrie cyclique et par spectroélectrochimie. Les résultats mettent en évidence une relation de dépendance entre la structure électronique et la nature des substituants(...)

Zinc ; Phtalocyanine ; Binucle´aire ; Voltame´trie cyclique ; Spectroe´lectrochimie

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