Faculté des Sciences exactes
تقديمات حديثة
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Étude de la répartition de radionucléides présents dans les lacs de barrages artificiels.
(جامعة الإخوة منتوري قسنطينة, 2018-04-22)Since its creation, the earth has always been bathed in a cocktail of natural radioactivity. Its content varies from location to another and from depth to another. Radiations arisen from these radionuclides constitutes ... -
Etude des réactions de précipitation continue et des propriétés mécaniques des alliages à base d’aluminium.
(جامعة الإخوة منتوري قسنطينة, 2018-04-24)The Al-Mg alloys are widely used in industry especially for marine applications since they possess good properties such as general corrosion resistance, strength, weldability, weight compared to other Al alloys and ... -
Isolement et determination structurale de metabolites secondaires de plantes sahariennes
(جامعة الإخوة منتوري قسنطينة, 2018-04-17)The present work consisted on a phytochemical and biological study of the species Pituranthos battandieri Maire, Algerian variety from the Apiaceae family, endemic to the Algerian and Moroccan Sahara. To the best of our ... -
Inférence statistique dans les équations différentielles stochastiques
(جامعة الإخوة منتوري قسنطينة, 2018-04-26)In this thesis, we are studying a class of continuous-time bilinear processes (COBL(1,1)) generated by some stochastic differential equations where we have investigate some probabilistic properties and statistical ... -
Différents aspects de la gravitation et de la non commutativité avec quelques applications cosmologiques.
(جامعة الإخوة منتوري قسنطينة, 2017-12-21)Noncommutative geometry has a very important role in gravitation word because it answers to a lot of questions and explain several phenomena. With the properties of noncommutative space-time (Seiberg-Witten mapping with ... -
L'évaluation des bornes du système hyper-chaotique de Lorenz-Haken.
(جامعة الإخوة منتوري قسنطينة, 2018-02-21)The first part of this thesis is dedicated to the study a dynamic complex financial system, the boundedness of solutions of this system is concerned. We have obtained the ultimate bound for the system.Furthermore, its rich ... -
Elimination de deux polluants organiques par photo-induction en phase homogène et hétérogène et par adsorption sur des supports inorganiques locaux.
(جامعة الإخوة منتوري قسنطينة, 2018-02-08)This work aims to study and evaluate the efficiency of a photo- catalytic process photoFenton-type for the removal from aqueous medium of an azo dye (orange methyl) and a pesticide (linuron) belonging to phenylurea family. ... -
Sur les techniques de modélisation des expériences numériques.
(جامعة الإخوة منتوري قسنطينة, 2017-07-13)In order to study any phenomenon and develop technological systems, researchers use certain experiments. However, the reduction in the number of experiments to be carried out with a view to inferring conclusions remains ... -
Extraction et analyse des éléments majeurs et traces contenus dans les poussières prélevées dans l’air ambiant à Constantine .
(جامعة الإخوة منتوري قسنطينة, 2018-01-31)When high mineral loads in atmospheric particulate matter (PM) are present, particular attention should be paid to the selection of appropriate acidic digestion protocols for wet chemical analysis. We report on a comparative ... -
Étude de l’effet monopolaire sur les noyaux impair-impairs dans la région de l’étain 132.
(جامعة الإخوة منتوري قسنطينة, 2017-09-07)The monopole interaction, which result from the interaction between the magic core and the valence particles, has a particular interest in the study of nuclear structure and in the comprehension of the appearance of new ... -
Etude phénoménologique du secteur des interactions électrofaibles dans les théories au-delà du Modèle Standard.
(جامعة الإخوة منتوري قسنطينة, 2018-02-08)In this thesis, we have studied the phenomenological study of theories beyond the standard model, and in particular the non-commutative standard model, in the electroweak interaction sector. For thus studied, we have ... -
Résolution des équations différentielles fractionnaires.
(جامعة الإخوة منتوري قسنطينة, 2018-01-11)In this work we have studied the existence and non-existence of solutions of nonlinear fractional differential equations. For the study of the existence and uniqueness the fixed point theory has been applied and for ... -
Synthèse et étude électrochimique de polymères organiques conducteurs dérivés d’arylène-cyano-vinylènes.
(جامعة الإخوة منتوري قسنطينة, 2017-11-16)The anodic oxidation of some monomers consisting of electron-donor units and electro-acceptor units in a 0.2M / CH2Cl2 Bu4NPF6 organic medium on a platinum electrode or on an ITO electrode is followed by cyclic ... -
Etude phytochimique et évaluation des activités biologiques des espèces algériennes Athamanta sicula L. et Ferula longipes Coss. ex Bonnier et Maury (Apiaceae)
(جامعة الإخوة منتوري قسنطينة, 2018-01-10)This work deals with phytochemistry and biological study of aerial parts of two species belonging to the Apiaceae family: Athamanta sicula L. and Ferula longipes Coss. Extraction, separation and purification by ... -
Photodégradation du chlorure de 1-hexyl-3- methylimidazolium en milieu aqueux homogène et hétérogène.
(جامعة الإخوة منتوري قسنطينة, 2018-02-01)1-hexyl-3-methylimidazolium chloride (HMImCl) removal from aqueous solution has been achieved by different advanced oxidation processes (AOPs). HMImCl direct photolysis at 254 nm showed that oxygen mainly intervenes to ... -
Dénitrification par l'utilisation de la souche Enterobacter Hormaechei
(جامعة الإخوة منتوري قسنطينة, 2017-12-11)The work that we present in this thesis consists of a study of the nitrate degradation reaction of wastewater by the use of a biological process. Heterotrophic denitrification is one of the most selective and advanced ... -
Sur les applications discrètes en dimension N, N>1.
(جامعة الإخوة منتوري قسنطينة, 2017-12-14)This thesis has two main objectives: The first objective is to define sufficient conditions for the existence of bounded or unbounded orbits in the quadratic discrete map in 3-D. The second objective is to study some ... -
Contribution à l’étude phytochimique et biologique de l’espèce Bupleurum lancifolium Hornem.
(جامعة الإخوة منتوري قسنطينة, 2018-01-14)The present work deals with the phytochemical study; the structural determination and biological evaluation of some natural compounds isolated from specie of the Apiaceae family: Bupleurum lancifolium (Hornem). This study ... -
Comportement électrochimiques des hétérocycles azotés et des biomolécules biologiquement actifs.
(جامعة الإخوة منتوري قسنطينة, 2017-11-29)This work presents the electrochemical behavior of three types of molecules: synthetic, biosynthetic and natural. Heterocyclic compounds from nitrophenyl acetic acid were synthetized and evaluated for their electroactivities ... -
Préparation et étude de polymères a empreintes moléculaires pour l’extraction de protéines.
(جامعة الإخوة منتوري قسنطينة, 2017-10-26)Separation techniques based on molecular recognition have received much attention in chemistry and biology due to their high selectivity for target molecules. In this area, molecularly imprinted polymers (MIPs) have ...
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