Etude Comparative Des Produits Issus De La Transformation En Filature Des Fibres De Trois Nouvelles Variétés De Cotonnier

Résumé - Au Mali, comme ailleurs en Afrique, la sélection variétale est à la base du succès de la culture cotonnière. Le coton du Mali est presqu’entièrement exporté ; les fibres issues des variétés cultivées doivent répondre aux exigences du marché en termes de caractéristiques technologiques des fibres, facteurs clés du fonctionnement de la filature. Cette étude comparative a été réalisée sur trois nouvelles variétés de cotonniers A, B et C, issues d’un point d'expérimentation. L'objectif de l'étude est d’identifier les variétés ayant les meilleures performances variétales et industrielles pour la vulgarisation en production commerciale par les sociétés cotonnières. 1 échantillon représentatif de 100g de coton fibre, 20 échantillons de 5 m de rubans de carde, d’étirage et de 10 m de mèches, 30 échantillons de 100 m de fil et 40 échantillons de 500 mm de fil ont été respectivement prélevés par balle de chaque variété et à différentes étapes du processus de transformation par variété. Ces échantillons ont été testés sur des appareils de mesure dans les conditions requises au laboratoire de métrologie textile du CERFITEX, Ségou - Mali.L’analyse de variance (ANOVA) des données relatives aux fibres, rubans, mèches et fils et la comparaison de leurs principales caractéristiques de qualité à celle de la production mondiale avec l’application des USTER STATISTICS 2018 ont montré que les variétés de cotonnier A et B sont nettement meilleures que celle de C. Les performances variétales et industrielles de A et B, meilleures que celles de C sont recommandées à la vulgarisation Mots clés : Coton, caractéristiques technologiques, qualité, fibres, fils. [Comparative Study Of The Products Resulting From The Transformation Into Spinning Of The Fibers Of Three New Varieties Of Cotton]Abstract - In Mali, as elsewhere in Africa, varietal selection is the basis of the success of cotton growing. Cotton from Mali is almost entirely exported; fibers from cultivated varieties must meet market requirements in terms of the technological characteristics of fibers, key factors in the operation of the spinning mill. This comparative study was carried out on three new varieties of cotton A, B and C, from an experimental point. The objective of the study is to identify the varieties with the best varietal and industrial performance for popularization in commercial production by cotton companies. 1 representative sample of 100g of cotton fiber, 20 samples of 5m of carding and drawing slivers and 10m of rovings, 30 samples of 100m of yarn and 40 samples of 500mm of yarn were respectively taken per bale of each variety and at different stages of the transformation process by variety. These samples were tested on measuring devices under the required conditions at the CERFITEX textile metrology laboratory, Ségou - Mali.The analysis of variance (ANOVA) of fiber, sliver, roving and yarn data and the comparison of their main quality characteristics to that of world production with the application of USTER STATISTICS 2018 showed that cotton varieties A and B are clearly better than those of C. The varietal and industrial performances of A and B, better than that of C are recommended for popularisation Keywords : Cotton, technological characteristics, quality, fibres, yarns

Adverse Drug Reactions to Antiretroviral Therapy (ART): Prospective Study in HIV Infected Adults in Sikasso (Mali)

Objective: The purpose of this study was to evaluate the adverse effects of Antiretroviral Therapy (ART) in adult HIV-infected patients in decentralized setting of Sikasso, in Mali. Methods: This is a proactive study that took place from 2 January 2011 to 30 December 2012 at the Hospital of Sikasso (Department of Medicine). HIV-infected adult patients who have started ART at least 3 months before were included in this study to monitor the laboratory and clinical Adverse Drug Reactions (ADR) for at least 6 months. The WHO classification of adverse drug reactions has been used to investigate the causality of antiretrovirals. Results: Women were the most represented with 58% of the cases. The most represented age range was 26-47 years with 73.6%. Of the 178 patients enrolled, 61.2% had an ADR. ADR were neurological (40.4%), digestive (35.8%), cutaneous (18.3%) and hematological (5.5%). Stavudine was the most incriminated molecule, in 24.8% of the cases. The WHO grade 4 classification of ART toxicity was represented in 3.4% of the cases. The WHO causality score of “certain” was found in 29.8% of the cases. Conclusion: Adverse effects of Antiretrovirals are frequent and could be life-threatening in short and long terms. Regular follow-up of patients receiving these triple therapies, and the associated complications, is essential. We recommend active surveillance of antiretroviral therapy to strengthen Pharmacovigilance in Mali

Pyronaridine–artesunate or dihydroartemisinin–piperaquine versus current first-line therapies for repeated treatment of uncomplicated malaria: a randomised, multicentre, open-label, longitudinal, controlled, phase 3b/4 trial

International audienc