Introduction : La prééclampsie constitue dans le monde un véritable problème de santé tant dans sa fréquence, la diversité de sa prise en charge que dans ses complications. Objectif : il s’est agi d’étudier la prééclampsie sévère dans le département de gynécologie et de médecine de la reproduction du centre hospitalier universitaire Sourô Sanou. Méthodologie : nous avons réalisé une étude transversale à visée descriptive avec recueil rétrospectif des données sur une période d’un an allant du 1er Janvier au 31 Décembre 2019. Ont été incluses dans l’étude 171gestantes admises dans le département et porteuses d’une grossesse au terme de 20 semaines d’aménorrhée (SA) ou plus et chez qui le diagnostic de prééclampsie sévère a été posé au cours de la grossesse, ou du travail d’accouchement. Les données recueillies ont été saisies sur un micro-ordinateur et analysées avec le logiciel EPI inf...

Jute mallow is a leafy vegetable cultivated in urban and peri-urban farming systems in Burkina Faso. This research aims to select high-yielding and stable Jute mallow genotypes through evaluation in three locations. To do this, 20 genotypes were tested at three locations across Burkina Faso. The agronomic data were subjected to two-way analysis of variance and Genotype plus Genotype by Environment (GGE) biplot analysis using R software. The results revealed highly significant (p < 0.01) differences among genotypes for all agronomic traits. In addition, highly significant genotype × environment (GEN × ENV) interactions were observed for all traits. Comparative analysis of the average performance of the genotypes studied showed that plant heights ranged from 78.708 to 134.556 cm for genotypes AZIGA and HBV9. Regarding plant height (134.556 cm), stem diameter (15.181 mm), and number of bran...

Climate change, land-use intensification, and agroforestry management are key drivers of soil organic carbon (SOC) dynamics in Sub-Saharan Africa, yet their combined effects remain poorly understood. Using a hierarchical space-for-time substitution approach, we analysed 1,440 soil samples from protected areas, fallows, and croplands across four climatic zones spanning a humid-to-semi-arid gradient in Ghana and Burkina Faso. We also assessed the role of tree canopy cover on SOC stocks and soil properties. Climate was the dominant driver of SOC dynamics, explaining 26.3% of the variation in topsoil SOC, while the interaction between climate and land-use accounted for 34% of the variation in total SOC stocks. The effects of land-use intensification increased along the aridity gradient, causing substantial SOC depletion in croplands within dry sub-humid and semi-arid zones, likely due to red...

Le syndrome de perfusion artérielle inversée (Twin Reversed Arterial Perfusion Syndrome – TRAP) est une forme grave de complication très ??? des jumeaux monochorial perfuseur-perfusé. Nous rapportons ce cas de jumeaux découverts au cours du travail d’accouchement des jumeaux nés par voie basse d’une patiente de 21 ans qui n’a réalisé aucune échographie anténatale. Elle est deuxième et primipare avec un enfant vivant, elle n’a pas d’antécédents particuliers. La grossesse gémellaire était constituée d’un jumeau acardiaque se présentant sous forme d’une masse amorphe et d’un jumeau sans malformations de sexe masculin. Ce cas rappelle l’intérêt des échographies prénatales afin de dépister tôt ce genre de malformations et d’y apporter une prise adaptée afin d’améliorer le pronostic du jumeau pompe.

Population growth and climate change are putting drinking water resources at risk, making groundwater a key solution to these challenges. In Burkina Faso, more than 80% of the geology consists of crystalline bedrock, which necessitates the search for bedrock aquifers for water supply. The complexity of these aquifers has led to numerous unsuccessful water drillings. Electrical resistivity tomography (ERT) profiles were therefore conducted in the cities of Loumbila and Ziniaré using the resistivity-meter SYSCAL Pro system, in a Wenner-Schlumberger configuration, to better identify the characteristics of potential aquifer zones. ERT field measurements use a series of electrodes spaced 5 m apart to measure electrical resistivity along the profile. The inversion results are presented as cross-sections showing the distribution of the subsurface’s true resistivity as a function of depth along...

This study presents an integrated geostatistical and multivariate clustering framework to characterize hydrogeological variability across 261 boreholes in the crystalline basement aquifers of Burkina Faso. Spatial autocorrelation analysis based on Moran’s I indicates significant spatial dependence for borehole depth (I = 0.088, p = 0.0059) and static water level (I = 0.063, p = 0.0336), whereas discharge exhibits no significant spatial autocorrelation (I = −0.032, p = 0.7847). Hierarchical agglomerative clustering identifies two complementary organizational scales: a functional hydrogeological classification into three clusters (k = 3, s = 0.3045), corresponding to regolith reservoirs, hydrodynamically constrained media, and high-yielding structural fractures, and a broader macro-spatial regionalization into two clusters (k = 2, s = 0.4978). This scale-dependent organization highlights t...

This article analyzes monthly and seasonal spatial trends in drought within Burkina Faso using the Rainfall Anomaly Index (RAI). Rainfall data from the Burkina National Meteorological Agency (1991–2023) were processed using the R package ‘precinctcon’ and hydroTSM. Trends were then evaluated using Spearman’s Rho (SR) tests and Inverse Distance Weighting (IDW) interpolation. The results demonstrated a seasonally differentiated distribution of droughts. While drought dominates the pre-wet season; a distinct wet phase occurs during the peak rainy months of July and August. In contrast, the post-wet season, exhibits fluctuating wet and drought periods. RAI values reflect high inter-seasonal variability, showing that rainfall is concentrated into only a few months. This exposes different regions of Burkina Faso to greater risks of drought. This concentration increases drought risk across vari...

La gestion des risques financiers sur les marchés émergents d’Afrique de l’Ouest, en particulier à la Bourse Régionale des Valeurs Mobilières (BRVM), requiert des outils de modélisation sophistiqués capables de capturer la structure de dépendance complexe entre les rendements des actifs. Cette étude propose une évaluation comparative du risque de portefeuille constitué de trente actifs de la BRVM à travers l’utilisation des copules Archimax (Clayton, Gumbel et Frank) et de la copule Gaussienne. Sur la base des rendements journaliers observés sur la période 2020–2025, nous estimons les paramètres des différentes copules par la méthode du maximum de vraisemblance canonique, puis nous calculons les mesures de risque Value-at-Risk (VaR) et Conditional Value-at-Risk (CVaR) pour des portefeuilles optimisés. Les résultats permettent d’identifier la copule qui capture le mieux la dépendance de...

This paper proposes a unified framework combining Extreme Value Theory (EVT) and nonlinear partial differential equations to model financial returns on the BRVM. We conjecture a link between the EVT tail index ξ and the p-Laplacian exponent p: ξ=1/(p−1) . The conjecture is motivated by a heuristic boundary layer analysis (which suggests ξ=1/p ) but empirical fit on 20 BRVM assets unambiguously yields ξ=1/(p−1) . Using independent numerical estimation of p (via the SBA method) and ξ (via GPD), we find excellent agreement. Results show strong heterogeneity across sectors, with agriculture exhibiting the heaviest tails (ξ up to 0.56) and violation of mean reversion. A stress-testing grid is proposed for regulators.

Background: Flemingia faginea is a riparian species restricted to riverbanks and currently facing population decline. Its limited natural regeneration results from the combined effects of climate variability and anthropogenic disturbances. Ethnobotanical surveys serve as a vital bridge between scientific and local knowledge, supporting sustainable management and conservation. This study aimed to explore endogenous knowledge and practices related to F. faginea. Methods: Data were collected from 205 respondents using simple random sampling to ensure an unbiased representation of local knowledge. A semi-structured interview based on a questionnaire was conducted with populations living near the Tiogo and Bontioli classified forests, which are home to the species. The data collected focused on sociodemographic characteristics, knowledge of the plant, its parts, areas of use, threats, sol...