Publications (8102)
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
Medicinal plants used in traditional medicine in the centre east region of Burkina Faso
J.M.K. Ky, P. Zerbo, C. Gnoula, J. Simporé, J.B. Nikiema, J. Millogo-Rasolodimby
The present research focused on the inventory and the use of plants in traditional medicine for the treatment of diseases in this area. The method was based on ethnobotanical surveys with semi-directing interview, conducted from November 2006 to December 2007 among a sample of 50 people aged between 40 and 80 years and very experienced in trad(...)
Plantes médicinales, médecine traditionnelle, ethnobotanique, Burkina Faso, maladies gastro-intestinales, paludisme, pharmacopée vétérinaire, ressources génétiques végétales
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
Epidemiology and prognostic factors for sickle cell retinopathy in Ouagadougou (Burkina Faso)
J.W. Diallo, O. Sanfo, I. Blot, N. Meda, P. Sawadogo, A. Ouedraogo, J. Simporé
Introduction: The frequency of sickle cell disease varies from 5% to 20% in Africa.
Patients and method: This retrospective study investigated 173 patients in an ambulatory setting from August 2000 to July 2006. The study included 98 women and 75 men, aged 15-62 years, with a mean age of 26.7 years.
Results: Only 89 patients (71 SC and 1(...)
rétinopathie drépanocytaire, facteurs pronostiques, épidémiologie, Ouagadougou, Burkina Faso
ARTICLE
Antimicrobial resistance and serotype distribution of Streptococcus pneumoniae strains causing childhood infection in Burkina Faso
Leonard C. Bere, Jacques Simpore, Simplice D. Karou, Boukaré Zeba, Augustin P. Bere, Elizabeth Bannerman, Jacques Bille, Mireille Dosso
In Burkina Faso, a Western African country, reports on pneumococci carriage, resistance patterns and serotypes are inconsistent. The present study was conducted in order to evaluate these parameters. Thus 860 nasopharyngeal swabs were collected from children attending vaccination centers for pneumococci isolation, identification and serotype d(...)
Streptococcus pneumoniae, résistance antimicrobienne, sérotypes, enfants, Burkina Faso, antibiotiques
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
Reversible reduction of nevirapine plasma concentrations during rifampicin treatment in patients coinfected with HIV-1 and tuberculosis
Alberto Matteelli, Nuccia Saleri, Paola Villani, Victor Bonkoungou, Anna Cristina C Carvalho, Seni Kouanda, Marie J Sanou, Jacques Simporé, Laura Monno, Giampiero Carosi, Mario Regazzi, Mathurin Dembele
Background: Nevirapine (NVP) plasma levels are reduced in patients receiving rifampicin (RFM) for tuberculosis (TB) treatment. We determined variations over time of the pharmacokinetic parameters of NVP in patients who receive RFM.
Methods: HIV-1-infected patients with CD4+ T-lymphocyte count <or=100 cells per microliter and TB diagnosis re(...)
nevirapine, rifampicin, pharmacokinetics, HIV-1, tuberculosis, plasma concentrations, AUC, combined therapy
ARTICLE
Co-infection of Toxoplasma gondii with HBV in HIV-infected and uninfected pregnant women in Burkina Faso
D. Ouermi, J. Simpore, A. M. G. Belem, D. S. Sanou, D. S. Karou, D. Ilboudo, C. Bisseye, S. M. Onadja, V. Pietra, S. Pignatelli, C. Gnoula, J. B. Nikiema, G. B. Kabre
Toxoplasma gondii infections can induce serious complications in HIV-infected pregnant women, leading to miscarriage; favour the mother-to-child transmission of HBV and HIV and birth defects. The purposes of this study were: (1) to quantify IgM and IgG antibodies to Toxoplasma gondii in HIV-seropositive and seronegative pregnant women, (2) to(...)
Toxoplasma gondii, co-infection, hépatite B, VIH, grossesse, Burkina Faso, anticorps IgM/IgG, HBsAg, femmes enceintes
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
Well-posedness results for triply nonlinear degenerate parabolic equations.
B. Andreianov, M. Bendahmane, K.H. Karlsen, S. Ouaro
We study well-posedness of triply nonlinear degenerate elliptic-parabolic-hyperbolic problems of the kind
b(u)t−div𝔞̃ (u,∇φ(u))+ψ(u)=f,u|t=0=u0
in a bounded domain with homogeneous Dirichlet boundary conditions. The nonlinearities b,φ and ψ are supposed to be continuous non-decreasing, and the nonlinearity 𝔞̃ falls within the Leray-Lions(...)
degenerate elliptic-hyperbolic-parabolic equation; Leray-Lions type operator; homogeneous Dirichlet problem; entropy solution; well-posedness; continuous dependence on data
ARTICLE
IND-6, a highly divergent IND-type metallo-beta-lactamase from Chryseobacterium indologenes strain 597 isolated in Burkina Faso
Boukaré Zeba, Filomena De Luca, Alain Dubus, Michael Delmarcelle, Jacques Simporé, Odile G. Nacoulma, Gian Maria Rossolini, Jean-Marie Frère, Jean-Denis Docquier
The genus Chryseobacterium and other genera belonging to the family Flavobacteriaceae include organisms that can behave as human pathogens and are known to cause different kinds of infections. Several species of Flavobacteriaceae, including Chryseobacterium indologenes, are naturally resistant to beta-lactam antibiotics (including carbapenems)(...)
Chryseobacterium indologenes, Burkina Faso, IND-6, metallo-beta-lactamase, résistance aux antibiotiques, beta-lactamines, ceftazidime, cefepime, aminoglycosides