Publications (5607)
ARTICLE
Indications et apports de l’endoscopie au tube rigide dans l’exploration des voies aérodigestives en ORL
OUOBA K, GYEBRE YMC, OUEDRAOGO BP, SERME M, ELOLA A, OUEDRAOGO I, OUATTARA M, DIALLO, SANOU J.
Résumé
Introduction : L’endoscopie au tube rigide des voies aéro-digestives hautes est une exploration encore courante
dans les pays en développement. Le but de cette étude était de préciser ses indications et ses résultats dans le
service d’ORL du CHU de Ouagadougou (Burkina-Faso).
Méthodologie : Il s’agissait d’une étude rétrospectiv(...)
Mots clés non renseignés
ARTICLE
Rates of coverage and determinants of complete vaccination of children in rural areas of Burkina Faso
Sia, Drissa, Pierre Fournier, Jean-François Kobiané et Blaise Sondo
Burkina Faso's immunization program has benefited regularly from national and international support. However, national immunization coverage has been irregular, decreasing from 34.7% in 1993 to 29.3% in 1998, and then increasing to 43.9% in 2003. Undoubtedly, a variety of factors contributed to this pattern. This study aims to identify both in(...)
Mots clés non renseignés
ARTICLE
FFT/IFFT Pair Based Digital Filtering for the Transformation of Adding Signal PAPR Reduction Techniques in Tone Reservation Techniques
Guel Désiré and Palicot Jacques
Orthogonal Frequency Division Multiplexing (OFDM) suffers from a high Peak-to-Average Power Ratio (PAPR). Tone Reservation (TR) is a popular PAPR reduction technique that uses a set of reserved subcarriers to carry the peak reducing signal. The major advantages of TR technique include no transmission performance degradation, no transmission of(...)
Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), FFT/IFFT pair Based Digital Filtering
ARTICLE
A Figure-of-Merit for Evaluating the Overall Performance of OFDM PAPR Reduction Techniques in the Presence of High Power Amplifier
Guel Désiré and Palicot Jacques
One of the major drawbacks of Orthogonal Frequency-Division Multiplexing (OFDM) is the large envelope fluctuations which either require an inefficient use of High Power Amplifiers (HPA) or decrease the system performance. Peak to-Average Power Ratio (PAPR) is a very well known measure of the envelope fluctuations and has become the cost functi(...)
Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Overall Performance (OP), High Power Amplifier (HPA)
ARTICLE
Study of floristic diversity and structural dynamics of some species providers of non woody products in the vegetable formations of the Centre East Region of Burkina Faso.
Ky K.J.M., Gnoula C., Zerbo P., Simporé J., Nikiéma J-B. et Millogo-Rasolodimby J.
Cet article de 08 pages, 03 tableaux, 06 figures et 36 références, avait pour but de contribuer à une meilleure connaissance de certaines espèces fournissant des Produits Forestiers Non Ligneux (PFNL) dans le Centre-Est du Burkina Faso. Cette étude vise à déterminer l'état des ressources en Vitellaria paradoxa, Balanites aegyptiaca, Tamarindus(...)
Produits Forestiers Non Ligneux, Régénération, Gestion durable, Burkina Faso
ARTICLE
[Ceramic clay from Burkina Faso used in building construction]: Céramiques d'argile du Burkina Faso utilisées en construction immobilière
D. BATHIEBO
2 raw clays samples from Burkina Faso were analyzed in order to improve the ceramic process of roof tiles and small bricks manifacture. The major phases etected by X-ray diffraction in the 2 samples are kaolinite, illite, orthose and quartz. In addition, feeble quantities of albite and montmorillonite are also detected. The thermal behavior be(...)
Mots clés non renseignés
ARTICLE
Transformation grâce à un Filtrage Numérique des techniques "Ajout de Signal" en techniques "Tone Reservation" pour la Réduction du PAPR des Signaux OFDM
Désiré GUEL, Jacques PALICOT
L'OFDM (Orthogonal Frequency Division Multiplexing) souffre d'une grande variation d'amplitude caractérisée par un PAPR (Peak-to-Average Power Ratio) élevé. La "Réservation Tone" (TR) est une technique de réduction de PAPR qui utilise un ensemble de porteuses réservées pour transmettre le "signal de réduction du PAPR". Du f(...)
PAPR, Tone Reservation, Signaux OFDM
ARTICLE
In vitro Antibacterial Properties of Total Alkaloids Extract from Mitragyna Inermis (Willd.) O. Kuntze, a West African Traditional Medicinal Plant
Cheikna Zongo, Etienne-Francois O. Akomo, A. Savadogo, Louis Clement Obame, Jean Koudou and Alfred S. Traore
The antimicrobial activity of the total alkaloids from the leaves of Mitragyna inermis (Willd.) O. Kuntze (Rubiaceae) From Burkina Faso was evaluated using disc diffusion essay and broth microdilution assay. The extract was used against ten (10) reference bacterial strains and three (3) clinical isolates including Gram(+) and Gram(-) strains.(...)
Mots clés non renseignés
ARTICLE
Biodepollution of wastewater containing phenolic compounds from leather industry by plant peroxidases
Mamounata Diao • Nafisse´tou Oue´draogo • Lamine Baba-Moussa • Paul W. Savadogo • Amani G. N’Guessan • Imael H. N. Bassole´ • Mamoudou H. Dicko
This study deals with the use of peroxidases (POXs) from Allium sativum, Ipomoea batatas, Raphanus sativus and Sorghum bicolor to catalyze the degradation of free phenolic compounds as well as phenolic compounds contained in wastewater from leather industry. Secretory plant POXs were able to catalyze the oxidation of gallic acid, f(...)
Peroxidase Leather Wastewater Biodepollution Phenolic compound
ARTICLE
Analysis and comparison of clipping techniques for OFDM Peak-to-Average Power Ratio reduction
Guel Desire and Palicot Jacques
One of the main disadvantages of Orthogonal Frequency Division Multiplexing (OFDM) is its high Peak-to-Average Power Ratio (PAPR), which significantly reduces the efficiency of the High Power Amplifier (HPA). Due to the simplest way for PAPR reduction, clipping techniques are frequently used in practice for OFDM PAPR reduction. In this paper,(...)
Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Clipping techniques
ARTICLE
Experimental characterization of gaseous species emitted by the fast pyrolysis of biomass and polyethylene
S. K. Ouiminga, T. Rogaume, M. Sougoti, J-M. Commandré, J. Koulidiati
This study aims to experimentally characterize the carbonaceous and nitrogenous species, from the flash pyrolysis of millet stalks and polyethylene plastic bags, using the device of the tubular kiln, coupled to two gas analyzers: Analyzer Fourier Transform Infrared (FTIR) and an analyzer Infrared Non-Dispersive (IRND). Gaseous products analyze(...)
Pyrolysis, Millet stalk, Polyethylene, Carbon
ARTICLE
La problématique diaspo à l’université de Ouagadougou ou les paradoxes de l’identité nationale burkinabè
Bouraiman ZONGO
A l’intérieur du champ de la migration, la problématique diaspo à l’Université de Ouagadougou est analysée comme une question identitaire dans un contexte social de rencontre et de diversité culturelle. L’objectif du texte est de mettre en évidence les difficultés que les étudiants burkinabè ont à surmonter les préjugés réciproques qui renforc(...)
Université de Ouagadougou, diaspo, diversité culturelle, conflits
ARTICLE
OFDM PAPR Reduction Based on Nonlinear Functions without BER Degradation and Out-of-Band Emission
Guel Désire and Palicot Jacques
Peak-to-average power ratio (PAPR) reduction techniques based on nonlinear functions (clipping, companding techniques, etc) are the most straightforward PAPR reduction methods. These techniques reduce the PAPR at the cost of generating distortions. In this paper, we prove basing on Bussgang theorem that in context of PAPR reduction techniques(...)
Orthogonal Frequency Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Nonlinear functions
ARTICLE
Sensitive and Selective Electrochemical Analysis of Methyl‐parathion (MPT) and 4‐Nitrophenol (PNP) by a New Type p‐NiTSPc/p‐PPD Coated Carbon Fiber Micro...
Issa Tapsoba, S. Bourhis, T. Feng, M. Pontié
A novel modified carbon fiber microelectrode (CFME) was obtained by combination of tetrasulfonated nickel phtalocyanine (p‐NiTSPc) electroformed film associated to para‐phenylenediamine (p‐PPD) electropolymerized outer‐coating. The modified CFMEs where denoted C/p‐NiTSPc and C/p‐NiTSPc/p‐PPD, respectively. These electrodes are dedicated to the(...)
Mots clés non renseignés
ARTICLE
Medicinal plants used in traditional medicine in Centre East Region of Burkina Faso.
Ky K.J.M., Zerbo P., Gnoula C., Simporé J., Nikiéma J-B. et Millogo-Rasolodimby J.
Cette publication de 12 pages, 04 tableaux, 04 figures et 35 références, a porté sur l'inventaire et l'utilisation des plantes en médecine traditionnelle pour le traitement des maladies dans la Région du Centre-Est. La méthode était basée sur des enquêtes ethnobotaniques avec entretien semi-directif auprès de 50 personnes très expérimentées en(...)
Médecine traditionnelle, Indication thérapeutique, Plantes médicinales, Burkina Faso