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Phytochemical Analysis and Antimicrobial Activity of Lawsonia inermis Leaf Extracts from Burkina Faso

American Journal of Plant Sciences（美国植物学期刊） 2024年第7期 552页

作者： Ollo Youl Soumaïla Konaté Ernest N.Sombié Rainatou Boly boukaré kaboré Moumouni Koala Arouna Zoungrana Saybou Savadogo Christian Marc Tahita Innocent Valea Halidou Tinto Adama Hilou Maminata Traoré-Coulibaly

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Phytochemical Screening by High-Performance Thin-Layer Chromatography, Antioxidant Activities and Acute Toxicity of Trunk Barks Extracts of Lannea velutina A. Rich

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American Journal of Analytical Chemistry 2022年第10期

作者： boukarékaboré moumouni koala mathieu nitiema windingoudi rimwagna christian ouedraogo souleymane compaoré lazare belemnaba salfo ouedraogo sylvain ilboudo noufou ouedraogo constantin m. dabiré félix b. kini sylvin ouedraogo eloipalé

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Anti-Inflammatory and Antioxidant Properties of the Aqueous Extracts of the Leaves of Opilia amentacea (Opiliaceae)

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Pharmacology & Pharmacy（药理与制药） 2023年第9期

作者： Rainatou Boly Abdoul Gilchrist Laurent Boly Wendkouni Leila Marie Esther Belem-Kabré Kadiatou Tata Traoré boukarékaboré Ollo Youl Latifatou Sawadogo Mathieu Nitièma Moumouni Koala Noufou Ouédraogo Estella Noëla Hoho Youl Maminata Traoré-Coulibaly

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Phytochemical Analysis and Contractile Effects of Aqueous and Hydroethanolic Extracts of Anastatica hierochuntica L. (Brassicaceae) on the Isolated Uterus of Mice

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Pharmacology & Pharmacy（药理与制药） 2023年第8期

作者： Belem-Kabré Wendkouni Leila Marie Esther Nitiéma Mathieu Odjo Blondine Saïdath Maman Noura Oumarou Yaro Boubacar kaboré boukaré Somda Gaëtan Donzéo Traoré Tata Kadiatou Koala Moumouni Ilboudo Sylvain Ouédraogo Moussa KabréElie Ouédraogo Noufou

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Experimental Study of the Thermal Behavior of a Bioclimatic Building Prototype in a Sahelian Zone

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Smart Grid and Renewable Energy 2024年第8期15卷 187-199页

作者： Arouna kaboré boukaré Ouédraogo Sayouba Sandwidi Vincent Zoma Hermann kaboré Kalifa Palm Laboratoire des Energies Thermiques et Renouvelables (LETRE) Universit Joseph KI-ZERBO Ouagadougou Burkina Faso Laboratoire de Chimie Analytique Physique Spatiale et Energtique (LACAPSE) Universit Norbert ZONGO Koudougou Burkina Faso Laboratoire de Physique et Chimie de lEnvironnement Universit Joseph KI-ZERBO Ouagadougou Burkina Faso Laboratoire des Systmes dEnergie Renouvelable et Environnement Institut de Recherche en Sciences Appliques et Technologies (IRSAT) Centre National de la Recherche Scientifique et Technologique (CNRST) Ouagadougou Burkina Faso

Buildings constructed with modern materials (cement blocks, sheet metal, reinforced concrete, etc.) in the Sahelian zone often generate excessive electricity consumption and consequently very high electricity bills. This study is a contribution to the development of new building types based on the principle of bioclimatic construction. The aim is to find materials suited to the Sahelian climate and improve thermal comfort. To this end, an experimental study of the hygrothermal behavior of a bioclimatic building prototype with a domed roof is being carried out. Site meteorological data, air temperature and relative humidity of the building’s internal environment were measured for three climatic seasons in Burkina Faso. The data acquisition system consists of thermocouples, solarimeters and humidity meters, and the data are processed using Excel and Origin Pro software. The results show that, despite the high temperature values (between 36˚C and 39˚C) of the internal environment measured in the hot season, good thermal performance is achieved, in particular an average phase shift of 7.17 h and an average damping of 10.81˚C. The dome-roofed building could therefore contribute to limiting heat transmission to the building interior, improving thermal comfort all year round. Analysis of humidity profiles shows that indoor humidity varies between 66% and 80% for the September period, and between 44% and 69% for the January period. The high values of internal ambient humidity could be reduced by very good ventilation of the building. This study shows that the proposed bioclimatic building prototype with domed roof could be integrated into the Sahelian habitat.

关键词： Thermal Comfort Hygrothermal Behavior Bioclimatic Building Thermal Inertia Domed Roof

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Phytochemical Profile, Antioxidant, and Anti-Inflammatory Activities, Safety of Use and Spasmolytic Effects of Aqueous Decoction Extract of Diospyros mespiliformis Leaves Hochst. ex A. DC. (Ebenaceae) on the Isolated Duodenum of Rat

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Pharmacology & Pharmacy（药理与制药） 2023年第12期

作者： Mathieu Nitiéma Pegdwendé Esther Ouédraogo Tata Kadiatou Traoré Oumarou Maman Noura boukaré kaboré Wendkouni Leila Marie Esther Bélem-Kabré Windingoudi Rimwagna Christian Ouédraogo Moumouni Koala BrunoNébié Abdel Magid Arsène Ouoba Makumbu Joseph Makaya Sylvain Ilboudo Lazare Belemnaba Noufou Ouédraogo Sylvin Ouédraogo

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Polycrystalline Silicon Solar Cell p-n Junction Capacitance Behavior Modelling under an Integrated External Electrical Field Source in Solar Cell System

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Energy and Power Engineering 2020年第5期12卷 143-153页

作者： Adama Ouedraogo boukaré Ouedraogo Boureima kaboré Dieudonné Joseph Bathiebo Laboratory of Thermal and Renewable Energies Department of Physics Unit of Training and Research in Pure and Applied Sciences Université Joseph KI-ZERBO Ouagadougou Burkina Faso Centre Universitaire Polytechnique de Kaya (CUP-Kaya) Kaya Burkina Faso Université Norbert ZONGO Koudougou Burkina Faso

The state of the p-n junction is very important to explain the performances of a solar cell. Some works give the influence of the electric field on the junction capacitance. However, these works do not relate the quality of the p-n junction under the electic field. The present manuscript is about a theoretical modelling of the p-n junction capacitance behavior of the polycrystalline silicon solar cell under an integration of the external electrical field source. An external electrical source is integrated in a solar cell system. The electronic carriers charge generated in the solar cell crossed mainly the junction with the great strength external electrical field. In open circuit, this crossing of the electronic charge carriers causes the thermal heating of the p-n junction by Joule effect. The p-n junction capacitance plotted versus the junction dynamic velocity and the photo-voltage for different external electrical fields. The electric field causes the decrease of the photo-voltage mainly the open-circuit photo-voltage. The decrease of the photo-voltage translates the narrowing of the Space Charge Region (SCR). The average value of the external electric field used in this study is not sufficient to cause the breakdown of the p-n junction of the solar cell system under integration of the external electrical field production source. The increase of the electrical field causes rather the narrowing of the SCR. That can provide an improvement of the solar cell’s electrical outputs.

关键词： Polycrystalline Silicon Solar Cell Space Charge Region Photo-Current Photo-Voltage Conversion Efficiency pn-Junction Capacitance External Electrical Field

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Acute Oral Toxicity and Vasorelaxant Effects of Hydroethanolic Extract from Lannea microcarpa Engl. & K. Krause (Anacardiaceae) Trunk Barks in Mice Aortas:Possible Involvement of Intracellular Ca2+ Mobilization

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Pharmacology & Pharmacy（药理与制药） 2023年第12期

作者： Mathieu Nitiéma Bertrand Kafando Windingoudi Rimwagna Christian Ouédraogo Bibata Sawadogo boukaré kaboré Wendkouni Leila Marie Esther Bélem-Kabré Tata Kadiatou Traoré Jean Claude Romaric Pingdwindé Ouédraogo Salfo Ouédraogo Lazare Belemnaba Aristide Traoré Moussa Ouédraogo Noufou Ouédraogo Bondo Félix Kini Sylvin Ouédraogo

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Effect of Drying Air Velocity on Drying Kinetics of Tomato Slices in a Forced-Convective Solar Tunnel Dryer

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Journal of Sustainable Bioenergy Systems 2019年第2期9卷 64-78页

作者： Mamouda Moussa Na Abou Saidou Madougou Makinta boukar Energy-Environment-Development Niger(ENDA Energy Niger) NiameyNiger Laboratoire d’Energetique d’Electroniqued’Electrotechniqued’Automatique et d’Informatique Industrielle(LEEII)Universite Abdou MoumouniNiameyNiger

The objective of this work is to analyse the extent to which a change in the drying air velocity may affect the drying kinetics of tomato in a forced-convective solar tunnel dryer. 2 m?s?1 (V1) and 3 m?s?1 (V2) air speeds were applied in similar drying air temperature and humidity conditions. Main drying constants calculated included the drying rate, the drying time and the effective water diffusivity based on the derivative form of the Fick’s second law of diffusion. Henderson and Pabis Model and Page Model were used to describe the drying kinetics of tomato. We found that solar drying of tomato occurred in both constant and falling-rate phases. The Page Model appeared to give a better description of tomato drying in a forced-convective solar tunnel dryer. At t = 800 min, the drying rate was approximately 0.0023 kg of water/kg dry matter when drying air velocity was at 2 m/s. At the same moment, the drying rate was higher than 0.0032 kg of water/kg dry matter when the drying air velocity was 3 m/s. As per the effective water diffusivity, its values changed from 2.918E?09 m2?s?1 to 3.921E?09 m2?s?1 when drying air velocity was at 2 and 3 m?s?1 respectively, which is equivalent to a 25% increase. The experimentations were conducted in Niamey, on the 1st and 5th of January 2019 for V2 and V1 respectively. For both two experiments, the starting time was 9:30 local time.

关键词： Solar Dryer Tomato Air Velocity Modeling Diffusivity

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Performance Evaluation of Solar Chimney Draft: Application to Ventilation

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Smart Grid and Renewable Energy 2024年第4期15卷 107-122页

作者： boukaré Ouedraogo Adama Ouedraogo Arouna kabore Kalifa Palm Dieudonné Joseph Bahiebo Laboratoire dEnergies Thermiques Renouvelables (LETRE) Universit Joseph KI-ZERBO: UFR/SEA Ouagadougou Burkina Faso Laboratoire de Chimie Analytique Physique Spatiale et Energtique (LACAPSE) Universit Norbert ZONGO Koudougou Burkina Faso Centre Universitaire Polytechnique de Kaya (CUP-Kaya) Universit Joseph KI-ZERBO Ouagadougou Burkina Faso Laboratoire des Systmes dEnergie Renouvelable et Environnement Institut de Recherche en Sciences Appliques et Technologies (IRSAT) Centre National de la Recherche Scientifique et Technologique (CNRST) Ouagadougou Burkina Faso

Ventilation is one of the factors contributing to energy consumption in buildings and food preservation. The solar chimney proves to be an alternative for reducing conventional energy consumption. Thus, in this study, the performance of a solar chimney with two active faces for thermally drawing air from a chamber for preserving agri-food products was evaluated. These performances were experimentally assessed through data measurements: temperatures and velocities within the chimney, and their analysis using Excel and MATLAB. The obtained results were compared with those from literature to verify their validity. From this study, it is found that the maximum temperature at the chimney outlet reaches 49.4˚C with an average value of 43.7˚C. Additionally, the heating evolution of the chimney air presents four (04) identical phases in pairs, reflecting the chimney’s operation throughout day. The temperature difference between the outlet and inlet of the chimney reaches a maximum of 17˚C with an average of 12.6˚C. Regarding airflow, the maximum air velocity at the chimney outlet is 0.8 m/s, and the average velocities have consistently been greater than or equal to 0.46 m/s. Thus, it can be concluded that the solar chimney is capable of providing ventilation for the preservation chamber through thermal draft.

关键词： Solar Chimney Natural Ventilation Thermal Draft Airflow Chimney Effect

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