Publications (5632)
ARTICLE
Antioxidant and antimicrobial activities of Canarium schweinfurthii Engl. Essential oil from Centrafrican Republic
Louis Clément Obame , Jean Koudou , Brice S. Kumulungui , Ismael H.N. Bassolé , Prosper Edou , Aboubakar S. Ouattara and Alfred S. Traoré
The antioxidant activity of the essential oil was investigated using 2,2-diphenylpicrylhydrazyl (DPPH) radical scavenging assay and the -carotene bleaching test. Butylated hydroxytoluene (BHT) was employed as a positive control. The essential oil showed antioxidant and DPPH radical scavenging activities, and it displayed the inhibi(...)
Canarium schweinfurthii, Burceraceae, essential oil, antimicrobial
ARTICLE
Alopecia in consultations in the dermatology department at Burkina Faso: Epidemiologic, clinical, and etiologic aspects
Adama Traore MD, Salam Sawadogo MD, Fatou Barro MD, Pascal Niamba MD
Background Hair loss, or alopecia, in a man or woman can have major psychologic repercussions.
Aim The aim of this study was to describe the epidemiologic, clinical, and etiologic aspects of alopecia in our service.
Materials and Methods A retrospective study was performed over two years. All patients of both sexes, who consulted a derma(...)
Mots clés non renseignés
ARTICLE
Haemoglobin C and S role in acquired immunity against Plasmodium falciparum malaria
K. SIMPORE
A recently proposed mechanism of protection for haemoglobin C (HbC; β6Glu→ Lys) links an abnormal display of Pf EMP1, an antigen involved in malaria pathogenesis, on the surface of HbC infected erythrocytes together with the observation of reduced cytoadhesion of parasitized erythrocytes and impaired rosetting in vitro. We investigated the imp(...)
Mots clés non renseignés
ARTICLE
« Pacéré as the Demiurge of Orature »
André Kaboré
Not all unwritten literatures are oral literatures. They would more appropriately be referred to as “spoken literatures”, in the wider sense of literatures that use different means of communication (mouth, gestures, body movement, instruments). The dumb “speak” with signs. Pio Zirimu proposed the term “orature” to palliate the alleged contradi(...)
Orature, written and spoken literatures, Pacéré
ARTICLE
Réduction du PAPR par Ajout de Signal hors bande dans un contexte de Signaux Multiporteuses
Désiré Guel , Jacques Palicot , Yves Louët
Dans cet article il est question de la mise en oeuvre d'une technique de réduction du rapport puissance maximale à puissance moyenne (PAPR) pour des systèmes OFDM par ajout de signal artificiel. Nous présentons une nouvelle technique de réduction du PAPR par ajout de signal pour des signaux multiporteuses, nous étudions ensuite sa complexité a(...)
PAPR, Signaux Multiporteuses
ARTICLE
A Geometric Method for PAPR Reduction in a Signal Adding Context for OFDM Signals
Desire Guel; Yves Louet; Jacques Palicot
This paper presents a new technique for OFDM signal PAPR reduction by adding an artificial signal in order to restrict the envelope of the resulting signal. The algorithm is presented, some simulation results and a complexity study are given. According to these results, the new method outperforms the conclusions presented in [1]. The PAPR is r(...)
OFDM, PAPR, HPA
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
Angeli's Salt (Na2N2O3) is a Precursor of HNO and NO: a Voltammetric Study of the Reactive Intermediates Released by Angeli's Salt Decomposition
I. TAPSOBA
Under physiological conditions, it is usually accepted that the aerobic decomposition of Angeli's salt produces nitrite (NO2−) and nitroxyl (HNO), which dimerizes and leads to N2O. No consensus has yet been established on the formation of nitric oxide (NO) and/or peroxynitrite (ONOO−) by Angeli's salt. Because this salt has recently been shown(...)
Mots clés non renseignés
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
Influence d’additifs sur le mécanisme de l’électrodéposition du cuivre en milieu acide : étude en courant alternatif.
Lucien Bonou, Marielle Eyraud, Souleymane Kologo, Boubié Guel
Les travaux présentés dans cet article ont été faits
en utilisant des méthodes électrochimiques en courant alternatif. L’effet du PEG et des ions chlorures sur
l’électrodéposition du cuivre a donc été étudié par la spectrométrie d’impédance électrochimique (SIE) couplé
avec une étude ellipsométrique au potentiel à courant nul.
Les solution(...)
additifs PEG+Cl-, électrodéposition du cuivre, spectroscopie d'impédance électrochimique
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
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