Browsing by Title
Now showing items 1628-1647 of 1751
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Study of the antidrepanocytary properties of an extract of ficus umbellataleaves
(2020)Background: Sickle cell disease is the most common symptomatic hemoglobinopathies in the world, especially in Black Africa. Herbal medicine becomes an alternative for the treatment of this condition, especially as the ... -
Study of the fluctuation of the NDVI in the Casamance River Basin upstream of Kolda using remote sensing data: what impact on flow?
(2020)Changes in land use and land cover have attracted considerable scientific interest in recent years because of their marked influence on hydrological cycles. In the tropics, widespread vegetation degradation and changes ... -
Study of the reactivity of Casamance vegetable and agricultural waste char gasification with steam and CO2
(2018)The increasing energy demand coupled with the need to reduce greenhouse gas emissions and the threat of exhaustion of oil reserves make us consider a possible recourse to the use of biomass waste as a source of renewable ... -
Style et créativité chez Flaubert : la question de l'Art
(2020)L’étude suivante, en partant du style et de la créativité romanesque, se veut comme objectif d’aborder la question de l’Art chez Flaubert. Cet Art de vivre, c’est-à-dire la littérature, l’ermite de Croisset le conçoit ... -
Suivi technique des unités de filtration membranaire installées dans le bassin arachidier au Sénégal.
(2020)L’eau est une substance fondamentale utilisée dans le domaine de l’industrie, de l’agriculture et de la consommation humaine. Même si l’eau est abondante au niveau du globe terrestre, elle reste peu exploitée. En réalité ... -
Sulfonated surfactants obtained from furfural
(2013)Furfural obtained from pentose containing biomass such as hemicelluloses is subjected to photooxygenation. The resulting hydroxyfuranone obtained in high yields undergoes acetalization with fatty alcohols. Using NaHSO3, ... -
Sur la cohomologie des (C,H)-modules relatifs de Hopf
(2023)Soient K un corps, H une algèbre de Hopf d’antipode bijective et C une coalgèbre de H-module. Supposons qu’il existe un antimorphisme de coalgèbres ϕ : C −→ H avec ϕ(1C) = 1H en utilisant ϕ on définit une structure de ... -
Sur les systèmes d’advection-diffusion : étude de quelques modèles de populations de la chaîne trophique.
(2022)Nous abordons dans cette thèse la dynamique d’évolution des nutriments, des phytoplanctons et zoo-planctons (NPZ) sous trois approches axées sur des modèles de convection et de diffusion. Ce sont les équations différentielles ... -
Surveillance active de l'Influenza aviaire, de la FVR et de la Fièvre hémorragique de Crimée Congo.
(2018)BIMASE est un bulletin d'information sur les maladies animales au Sénégal, il est mis en place pour lutter contre les maladies animales y compris les zoonoses. -
Survival and growth of Acacia senegal (L.) Wild. (Senegalia senegal (L.) Britton) provenances depend on the rainfall at the site of origin
(2021)• Key message Variation among provenances of Acacia senegal (Senegalia senegal (L.) Britton) in their survival and growth in height and diameter at two sites in Senegal could be partly explained by the climate at their ... -
Syndicalisme et performance sociale : cas de l’Université Assane Seck de Ziguinchor
(2020)Le syndicalisme occupe une place importante dans les organisations et son rôle principal reste la défense des intérêts matériels et moraux de ses membres. En effet, beaucoup de chercheurs se sont intéressées du ... -
Synthese et caractérisation physico- chimique de composés aromatiques a base de schiff.
(2019)Synthétisées pour la première fois par Hugo SCHIFF au 19e siècle, les bases de Schiff sont caractérisées par le lien (C=N) et dans lequel l’atome d’azote est lié à un groupe aryle ou alkyle et non à un hydrogène1 . ... -
Synthesis and Antimalarial Activity of 1,4-Disubstituted Piperidine Derivatives
(2020)In order to prepare, at low cost, new compounds active against Plasmodium falciparum, and with a less side-effects, we have designed and synthesized a library of 1,4-disubstituted piperidine derivatives from 4-aminopiperidine ... -
Synthesis and antimalarial activity of cinnamic acid derivatives
(2019)A peptide coupling reaction between 1-(R)-phenylethylalanine and cinnamic acid derivatives has been successfully employed for the synthesis of a set of small molecules. The antimalarial activity of these derivative molecules ... -
Synthesis and characterization of regioselectively monoderivatized maltooligosaccharides through a combination of tandem mass spectrometry and enzymatic hydrolysis studies
(2013)Recently, we have designed chemical strategies leading to C-6 perfunctionalized linear maltoheptaose derivatives via the acetolysis of persubstituted β-cyclodextrin (β-CD) at the 6-positions. This approach has now been ... -
Synthesis and crystal structure of a new calcium-containing trimesate coordination polymer: [Ca3(btc)2(H2O)12]∞.
(2013)Reaction in gel between the sodium salt of 1,3,5-benzenetricarboxylic acid or trimesic (Na3[C6H3(COO)3] hereafter referenced as Na3btc) and calcium chloride has afforded single crystals of a bidimensional coordination ... -
Synthesis and crystal structure of a new coordination polymer based on lanthanum and 1,4-phenylenediacetate ligands.
(Edited by A. Van der Lee, Universite´ de Montpellier II, France., 2019)The water hydrogen atoms were localized and constrained. The thermal agitation of the two water molecules of crystal lization was constrained. In order to stabilize the refinement several restraints (DANG, DFIX) were ... -
Synthesis and evaluation of the antimalarial activity of cinnamic acids derived from piperidine
(2019)The synthesis and antimalarial activity of 1, 4-aminopiperidine derived cinnamic acids are described. Different analogs are prepared from reductive amination reactions and SN1 substitutions. These analogs are tested ... -
Synthesis of 1,2,3-triazole containing derivative of peperidine
(2020)A reductive amination reaction between N-Boc -piperidin-4-one and phenoxy-ethylamine was successfully used for the synthesis of (5-Methyl-2-phenyl-2H-[1,2,3] triazol-4ylmethyl)- (2-phenoxy-ethyl)-piperidin-4-yl-amine. The ... -
Synthesis of N-Substituted piperidines from piperidone
(2015)A reductive amination reaction between N-boc-piperidin-4-one and 3,4-dichloroaniline was successfully employed for the synthesis of the N-(3,4-dichloropheny)-N-(2-phenoxylethyl) piperidin-4-amine. The synthesis of a small ...