Publications (358)
ARTICLE
Caractérisation mécanique et thermophysique des blocs de terre comprimée stabilisée au papier (cellulose) et/ou au ciment.
Emmanuel Ouedraogo , Ousmane Coulibaly , Abdoulaye Ouedraogo, Adamah Messan
Cet article présente une étude expérimentale portant sur la caractérisation de matériaux locaux utilisés dans la construction des bâtiments. Ces matériaux sont des blocs de terre compressée et stabilisée au ciment et/ou au papier. Ces matériaux composites utilisés pour l'enveloppe du bâtiment ont une grande stabilité à l’eau. Les mesures des(...)
Blocs de terre comprimée Papier (cellulose) Propriétés mécaniques Propriétés thermophysiques
ARTICLE
Kinematics and mass modelling of M33: Hα observations
Zacharie Sie Kam, Claude Carignan, Laurent Chemin, Philippe Amram, Benoit Epinat
As part of a long-term project to revisit the kinematics and dynamics of the large disc galaxies of the Local Group, we present the first deep, wide-field (∼42 arcmin × 56 arcmin) 3D-spectroscopic survey of the ionized gas disc of Messier 33. Fabry–Perot interferometry has been used to map its Hα distribution and kinematics at unprecedented an(...)
techniques: interferometric, ISM: bubbles, H II regions, galaxies: individual: M33, galaxies: ISM, galaxies: kinematics and dynamics
ARTICLE
Theoretical Investigation of Base doping and illumination level effects on a bifacial silicon solar cell.
10.9734/BJAST/2015/1562810.9734/BJAST/2015/15628
In this paper, we are investigating theoretically the behavior of a bifacial silicon solar cell in steady state with different illumination conditions. The bifaciality coefficient and the conversion efficiencyare calculated for various rear side illumination conditions (traduced here by the illumination le(...)
Mots clés non renseignés
ARTICLE
Fabrication of Amorphous Silver Nanowires by Helium Ion Beam Irradiation
Shehla, Ali A., Zongo S., Javed I, Ishaq A., Khizar H., Naseem S., Maaza M.
Amorphous silver nanowires (a-Ag NWs) are fabricated from crystalline Ag NWs by using 5 MeV helium (He+) ion beam irradiation. At low dose (5×1015 ion/cm2), few defects are created in Ag NWs. As dose increases, more damage to the crystalline structure of Ag NWs is observed. Finally at high dose (8×1016 ion/cm2), the face-centered cubic structu(...)
Mots clés non renseignés
ARTICLE
Highlighting of a local non-equilibrium thermodynamics during the transfer of trichlorethylene (TCE) in the superficial layers of arid soils
Samuel Ouoba, Bruno Cousin, David Y. Toguyeni, Salifou K. Ouiminga, Fabien Cherblanc, Jean Koulidiati & Jean-Claude Bénet
In this paper, we analyse and model the mass transfer of trichloroethylene in the surface layer of soil. Our study essentially focuses on arid soils taking into account the phase change liquid–vapour. We have then examined the validity of the assumption of local equilibrium by comparing the values of instantaneous pressure of the trichlo- roet(...)
Transfer, non-equilibrium, trichloroethylene, arid soil
ARTICLE
Spectroscopic study of the system 2Σ→ 2π of OHradical and determination of the rotational temperatures by using a numerical model
Samuel Ouoba, Tizane Daho, Arsène H. Yonli, Jean Koulidiati
We develop in this note a simple and practical method for the determination of the rotational temperatures based on the observation of molecular bands produced by the OH-radical. For this, we make an approach based on the concept of thermodynamic equilibrium and we proceed to a detailed study of OH. We carry out the simulation of this OH-radic(...)
Energy Levels, Spectrum, Rotational Temperature, OH-radical
ARTICLE
INFLUENCE OF ELECTROMAGNETIC WAVES PRODUCED BY AN AMPLITUDE MODULATION RADIO ANTENNA ON THE ELECTRIC POWER DELIVERED BY A SILICON SOLAR CELL
I. ZERBO, M. ZOUNGRANA, A. OUEDRAOGO, B. KORGO, B. ZOUMA AND D. J. BATHIEBO
This article presents a one dimensional modeling of the influence of electromagnetic waves on the electric power
delivered by a silicon solar cell under monochromatic illumination in steady state. The electromagnetic waves are
produced by an amplitude modulation radio antenna of 2MW power of radiation and located at a variable distance of
t(...)
Amplitude modulation, Radio antenna, Electromagnetic waves, Monochromatic illumination, Solar cell
ARTICLE
Determination of processes suitable for cotton stalk carbonization and torrefaction by partial combustion using a metal kiln
Ibrahim G. Harouna, Oumar Sanogo, Tizane Daho, Salifou K. Ouiminga, Abouzeidi Dan-Maza, Bernard Nana, Jean Koulidiati
n this work, the technical feasibility of cotton stalk carbonization and torrefaction was studied. A metallic homemade cylindrical furnace 60 cm in diameter and 90 cm in height was used for the experiments. A partial combustion process was used both for carbonization and torrefaction. Three carbonization methods were defined based on the amoun(...)
cotton stalks, carbonization, torrefaction
ARTICLE
Eco Insulation Materials: Reduction of Cooling Loads of a House Made of Breeze Block or Laterite in a Dry Tropical Climate:
Ousmane Coulibaly and David Yemboini Kader Toguyeni
In this paper, we study the influence of eco materials for roof insulation and fiber-reinforced mortar coatings on cooling loads of a home in dry tropical climate. The walls of the house are made of cinderblock or laterite and the insulating material of a roof panel is made with lime (24%), cement (6%), water (50%) of vegetable fibers hibiscus(...)
Hot-plate approach, laterite, fiber-reinforced mortar, TRNSYS model
ARTICLE
Influence of Ambient Pressure on the Evaporation of Volatile Organic Pollutants (VOP) during Soil Decontamination: Case of the Trichloroethylene (TCE)
Samuel Ouoba, Salifou K. Ouiminga, Justin Zaida, Bruno Cousin, Moussa Sougoti, Jean Koulidiati
This article presents the results on the volatilization of the volatile organic pollutants (VOP) during decontamination process from the soil. The choice of TCE as a volatile organic pollutant is explained by the fact that it is relatively highly soluble in water, compared to other compounds, which excludes any possibility of adsorption of its(...)
Soil, Volatile organic pollutant, Evaporation, Ambient pressure
ARTICLE
Z-scan and optical limiting properties of Hibiscus Sabdariffa dye
Diallo, S. Zongo, P. Mthunzi, S. Rehman, S. Y. Alqaradawi, W. Soboyejo & M. Maaza
The intensity-dependent refractive index n 2 and the nonlinear susceptibility χ (3) of Hibiscus Sabdariffa dye solutions in the nanosecond regime at 532 nm are reported. More presicely, the variation of n 2, β, and real and imaginary parts of χ (3) versus the natural dye extract concentration has been carried out by z-scan and optical limiting(...)
Mots clés non renseignés
ARTICLE
Étude de la pyrolyse en analyse thermogravimétrique du carton : cinétique double étape en régime isotherme
Kple M., Girods P., Anjorin M., Fagla B., Rogaume Y., Furdin G., Ouiminga S., Koulidiati J., Sanya E ., Degan G.
La pyrolyse semble être un procédé adapté au traitement des déchets à base de carton. Afin d’optimiser les conditions expérimentales du procédé de pyrolyse et d’apporter des éléments pour le dimensionnement d’une installation, une étude du comportement thermique du carton est indispensable. Dans le présent document, l’étude de la dégradation t(...)
Analyse Thermogravimétrique, Carton, Cinétique
ARTICLE
New Approach to Determine Vertical Parallel Junction Silicon Solar Cell Parameters
M. Sané, B. Zouma and F.I. Barro
The aim of this work is to study the electrical behavior of a vertical parallel junction silicon solar cell by
mean of impedance spectroscopy. By solving diffusion-recombination equation, the excess minority carrier density expression was established and the photocurrent and the photo voltage were deduced. We plotted Nyquist diagram of the s(...)
Electrical parameters, spectroscopy
ARTICLE
Characterization of briquettes coming from compaction of paper and cardboard waste at low and medium pressures
Ibrahim H. Gado, Salifou K. Ouiminga, Tizane Daho, Arsène H. Yonli, Moussa Sougoti, Jean Koulidiati
This study concerns the experimental characterization and compaction of paper/cardboard coming from waste of the city of Ouagadougou. The characterization results show that the category of waste of paper and cardboard encountered in Ouagadougou contains 39 % corrugated cardboard, 28 % of office paper, 18 % of non-corrugated cardboard, 7 % of n(...)
Paper, Cardboard, Characterization, Briquettes
ARTICLE
Combustion of vegetable oils under optimized conditions of atomization and granulometry in a modified fuel oil burner
Tizane Daho, Gilles Vaitilingom, Oumar Sanogo, Salifou K. Ouiminga, Augustin S. Zongo, Bruno Piriou, Jean Koulidiati
The use of vegetable oils in burners represents an attractive alternative to the use of heating fuel oil (HFO) in heat production for domestic heating, small industrial units, drying of various products etc. In this work, a characterization of the combustion of cottonseed oil in a modified burner (type Riello 40N10) was performed to assess its(...)
Vegetable oil, Atomization, Granulometry, Burner