ProGRES

ARTICLE

Mechanical, Thermal and Hydric Behavior of the Bio-sourced Compressed Earth Block (B-CEB) Added to Peanut Shells Powder

Nassio Sory, Moussa Ouedraogo, Adamah Messan, Issiaka Sanou, Moustapha Sawadogo, Kouka Jeremy Ouedraogo, Halidou Bamogo, Ouanmini Bobet, Lamine Zerbo, Mohamed Seynou

Bio-sourced compressed earth blocks (B-CEB) were manufactured with raw soil material and peanut shells powder to produce building material with feeble environmental impact and better mechanical and hydric performances. The objective of this work is to add value to two local natural raw materials namely earth and peanut shell in the production(...)

Bio-sourced Material, Compressed Earth Block, Peanut Shell, Mechanical Property, Thermal Conductivity, Rain Erosion

ARTICLE

Résistance aux chocs thermiques et aux attaques chimiques de briques réfractaires à base d’argile kaolinitique et de sable

Moustapha Sawadogo, Issiaka Sanou, Yéri Dah, Boubacar Traoré, Youssouf sawadogo, Drissa Samaké, Cheick Dembelé, Lamine Zerbo, Mohamed Seynou

Résumé : Ce travail évalue la résistance aux attaques chimiques et aux chocs thermiques des briques réfractaires élaborées à partir d’argiles locales et d’un sable naturel du Burkina Faso pour leur validation dans une utilisation industrielle. L’argile a été extrudée puis frittée à 1300 °C avec un palier de 1 heure pour produire de la cham(...)

argile, chamotte, sable, attaque acide, chocs thermiques

ARTICLE

Antioxidant activity study of Mareya micrantha leaves extracts using Differential pulse voltammetry

S. Siaka*1, K. A. J. N’zi1, Y. Soro1, B. Guel2

The rapid evaluation of antioxidant activities of plant extracts is of interest to many researchers in the field of phytochemistry. Electrochemical methods appear to be an alternative to the classic 2,2-diphenyl-1picryl-hydrazyl (DPPH) method, which is considered complex and constraining to be easily implemented. Indeed, using cyclic voltammet(...)

Mareya micrantha, Antioxidant activity, DPPH method

ARTICLE

Low-Cost Synthesis of Alumina Nanoparticles and Their Usage for Bisphenol-A Removal from Aqueous Solutions

Ollé Rodrigue Kam, Issaka Garikoé, Corneille Bakouan, Boubié,

Gamma-alumina nanoparticles (γANPs) were obtained from a low-cost process by using natural bauxites. The γANPs materials were characterized by X-ray powder diffraction (XRPD), Fourier-transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) theory, scanning electron microscopy (SEM), atomic force microscopy (AFM), and were function(...)

N-cetyl-N, N

ARTICLE

Some Aspects of the Reactivity of 3-acyl-4-hydroxycoumarins

Youssoufou Bakouan; Bintou Sessouma; Têeda Hamidou Ganamé; Lassané Tarpaga; Jules Yoda; Karifa Bayo

Coumarins are the most important oxygenated heterocyclic of natural compounds. They are widely used as raw materials in many areas such as agrochemical, perfume, pharmaceutical industries. They therefore have several physical, chemical and biological properties. In order to enlarge this family of compounds and elucidate almost all of its prope(...)

4-hydroxycoumarins, C-acylation, Acyl-hydroxycoumarins, Heterocyclic Compoun

ARTICLE

Usability of a Natural Tuff as Admixture in Clinker and Its Influence on the Physico-Chemical and Mechanical Properties of Mortar

Lamine Zerbo, Moustapha Sawadogo, Youssouf Sawadogo, Salfo Salogo, Moussa Ouedrago, Mohamed Seynou, Gisèle Lecomte-Nana, Philippe Blanchart

The mechanical and physical properties of TUFF from Korsimoro (Burkina Faso) were investigated for use as admixtures in clinker to make pozzolanic cement. Six different cement mortar specimens were prepared by replacing clinker with TUFF in ratios of 0%, 5%, 8%, 10%, 13% and 15% by mass. The flexural and compressive strengths of the specimens(...)

Pozzolan, Tuff, Admixture, Cement, Mortar

ARTICLE

3-benzoyl-4-hydroxy-coumarine :Synthèses et caractérisation d’une série de nouveaux composés

Youssoufou Bakouan; Bintou Sessouma; Lassané Tarpaga; Jules Yoda; Abdoulaye Djandé; Karifa Bayo

Nous avons synthétisé une série de 3-acyl-4-hydroxycoumarines par O-acylation de la 4-hydroxycoumarine suivie d’un réarrangement en C-acylation : 3-(4-méthylbenzoyl)-4-hydroxycoumarine (a), 3-(4-tertiobutylbenzoyl) -4- hydroxycoumarine (b), 3-(4-chlorobenzoyl)-4-hydroxycoumarine (c) et 3-(4-nitrobenzoyl)-4-hydroxycoumarine (d). Les compos(...)

3-acyl-4-hydroxycoumarines, molécule bioactive, RMN 13C 1H

ARTICLE

Phytochemical Screening and Antioxidant and Cytotoxic Effects of Acacia macrostachya

1. Ganamé Teeda Hamidou, Karanga Yssouf, Tapsoba Issa

Acacia macrostachya is used in Burkina Faso folk medicine for the treatment of inflammation and cancer. The purpose of this study was to evaluate the antioxidant and cytotoxic effects of this plant. The cytotoxic effects of root (dichloromethane B1 and methanol B2) and stem (dichloromethane B3 and methanol B4) bark extracts of A. macrostach(...)

Acacia macrostachya; antioxidant; cytotoxicity; cancer; leukemia; lymphoma

2021
Plants

ARTICLE

Phytochemical Screening and Antioxidant and Cytotoxic Effects of Acacia macrostachya

Ganamé Teeda Hamidou, Karanga Yssouf, Tapsoba Issa, Dicato M., Diederich F.M., Cerella C. and Sawadogo W.R

Acacia macrostachya is used in Burkina Faso folk medicine for the treatment of inflammation and cancer. The purpose of this study was to evaluate the antioxidant and cytotoxic effects of this plant. The cytotoxic effects of root (dichloromethane B1 and methanol B2) and stem (dichloromethane B3 and methanol B4) bark extracts of A. macrostachya(...)

Mots clés non renseignés

2021
Plants

ARTICLE

Méthode de quantification des Cochloxanthines, composés antiplasmodiques, par spectrophotométrie

TRAORE COULIBALY Maminata, DAKUYO Zéphirin Pando, BRAGAGNA Laura, STOLZE Klaus, NOVAK Johannes, YODA Jules, OUEDRAOGO Jean Claude W., YOUGBARE Sibidou, TRAORE Ousmane, TINTO Halidou

La présente invention intitulée « méthode de quantification des cochloxanthines, composés antiplasmodiques, par spectrophotométrie » concerne un procédé d'analyse quantitatif des cochloxanthines contenues dans les rhizomes de Cochlospermum Planchonii et de Cochlospermum tinctorium par spectrophotométrie UV-VIS. Le procédé consiste en l'extract(...)

Mots clés non renseignés

COMMUNICATION

Pollution chimique des eaux de surface liée aux activités agricoles autour des retenues d’eaux au Nord du Burkina Faso

S. B. Maïga-Yaleu, A. D. H., B. Guel

L’une des préoccupations mondiales en matière environnementale est la pollution des eaux de surface par les activités agricoles. En effet, dans le secteur agricole, de grandes quantités de produits chimiques tels que les engrais, les pesticides sont utilisés pour améliorer le rendement agricole et lutter contre les espèces nuisibles aux plante(...)

intrant agricole, Pollution, qualité de l’eau

ARTICLE

Synthesis, Characterization, Crystal Structure and Quantum Chemical Calculations of 2-oxo-2H-chromen-3-yl Acetate

Akoun Abou, Siaka Sosso, Affiba Florance Kouassi, Thouakesseh Jeremie Zoueu, Abdoulaye Djande, Olivier Ouari

This paper is focused on a combined experimental and theoretical study of 3-substituted coumarin derivative, the 2-oxo-2H-chromen-3-yl acetate (I). The compound was synthesized by reacting chroman-2,3-dione and acetic anhydride in dried diethyl ether in the presence of dried pyridine and crystallized in the orthorhombic crystal system with Pbc(...)

3-substituted Coumarin Derivative, C—H…O Hydrogen Bonds, Hirshfeld Surface Analysis, Quantum Chemical Computations

ARTICLE

SOLID-STATE SYNTHESIS AND PHYSICO-CHEMICAL CHARACTERIZATION OF MODIFIED SMECTITES USING NATURAL CLAYS FROM BURKINA FASO

Issaka Garikoé, Brahima Sorgho, Boubié Guel and Ingmar Persson

Solid-state intercalation was applied to prepare organo-smectites using cationic surfactants and natural clays containing smectite at various surfactant/smectite ratios. The surfactants enter the interlayers of smectites causing a swelling of the clays. The used clays were collected in Siétougou and Diabari villages located in the eastern part(...)

Smectite, Organo-smectite, Surfactant

ARTICLE

Formulation of clay refractory bricks: influence of the nature of chamotte and the alumina content in the clay

Moustapha Sawadogo, Mohamed Seynou, Lamine Zerbo, Brahima Sorgho, Gisèle Laure Lecomte-Nana, Philippe Blanchart, Raguilnaba Ouédraogo

Abstract: Refractory materials from kaolinitic clays and clay chamotte or quartz were studied to increase the refractoriness under load at temperature above 1300°C. Two different clays mined in Burkina Faso were used and chamotte grains were obtained by preliminary firing a local clay. Fired materials at 1350-1400°C present a typical granu(...)

Clay, Chamotte, Mullite

ARTICLE

Variation spatiale des ions majeurs en solution sous l’impact des croûtes de surface dans le Sahel du Burkina Faso

Stéphanie Batchakoue Maïga-Yaleu, HammaYacouba

L’objectif de cette étude est d’évaluer le rôle des croûtes de surface du sol sur les pertes en matières dissoutes par les eaux de ruissellement. Les données ont été collectées durant 3 années consécutives sur des parcelles de 1 m², 50 m² et 150 m² installées sur les croûtes structurale (STRU), d’érosion (ERO), gravillonnaire (GRAV) et de dess(...)

Érosion chimique, matière dissoute, croûtes de surface, Sahel

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