This work provides a new diagnosis method for broken bar and mixed air gap eccentricity faults in the closed loop control of a squirrel cage induction motor. The closed loop system is widely used in industrial applications ...
In the first theoretical part, the study makes callbacks on the anatomy and physiology of
parturition of cow that will be the key to the success of the surgical Act, emphasizing the
indications that were causes of dystocia ...
Our study is interested in the investigation of the chemical composition and the biological activities of Algerian propolis. In the first part of our study we examined several propolis harvested from Algerian East in order ...
This study aims to improve the coagulation of camel milk for the production of fresh cheese by using goat's milk and various rennet substitutes. First, we studied the raw materials used, including the raw composition of ...
The main purpose of this thesis is based on the synthesis and characterization of new coordination compounds based on alkaline-earth metals. Two synthesis methods were used to prepare these materials: synthesis by way of ...
Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, are chronic immune-mediated inflammatory diseases of the intestinal tract. Under low vitamin B conditions, homocysteine accumulates and ...
Ait Abdelouahab, Djaouza; Bouzenoune, Azzedine(Université Frères Mentouri Constantine 1, 2023-11-28)
The Boukhadra massif belongs to the north-eastern part of the Saharan Atlas and to the mining district of the diapirs zone. It is a NE-SW orientated anticline characterised by formations of Lower Cretaceous age, cut in its ...
This thesis deals with the study of attitude control systems and the development of control laws to ensure the stabilization of the attitude system. This was achieved by combining the dynamic systems control theory and ...
Ait kaki, Yasmine; Lezzar, Nawel(Université Frères Mentouri Constantine 1, 2022-07-14)
The objective of our study is to assess the degree of resistance acquired by strains of Escherichia Coli in a poultry farm in the Constantine region. 100 samples of droppings were taken at random from broilers treated with ...
Gronwall-Bellman inequalities and their various generalizations that give explicit bounds on unknown functions provide a very useful and important device in the study of many qualitative properties of solutions of differential ...
This research focuses on the Upper Rhumel basin (1130 km2), controlled by the Hammam Grouz dam at Oued Athménia (Constantinois region in eastern Algeria). This basin of the semi-arid High Plains contains three main ...
The integration of photovoltaic (PV) systems into the electrical grid faces numerous technical challenges, including the reliable and efficient export of energy to the grid while ensuring energy quality requirements. In ...
Pesticide users and manufacturers should anticipate exposure to toxicological risks, withal; the general public is not exempted. The use of carbamate insecticides poses a threat to human health, and pirimicarb is the most ...
The catalytic activation of hydrogen peroxide (H2O2), persulfate (PS) and peroxymonosulfate (PMS) by organometallic FeIII and CuII complexes has been applied in the removal of several types of pharmaceutical pollutants in ...
Like many coastal areas around the world, Skikda coastline is subject to disturbances that threaten its balance at various levels; ecological, sedimentary, sociological, and economic. With 160 km of coastal lineage, a very ...
This thesis work presents the synthesis, the characterization by infrared and UV-visible spectroscopic methods, and the structural study by X-ray diffraction of seven new complexes based on copper and the following nitrogenous ...
The objective of this thesis is to optimize the design of a wind energy conversion system by establishing an optimal balance between cost, energy efficiency, system performance, and the quality of energy injected into the ...
This work aims to isolate Actinobacteria strains with a growth promotion ability and the biocontrol potential
of Fusarium culmorum, the wheat root rot-causing fungi. The exploration of terrestrial and aquatic Algerian
...
The objective of our work is to carry out phytochemical and biological studies on the Algerian plants Inula conyza DC, Centaurea incana Desf belonging to the Asteraceae family, and Lathyrus latifolius L of the Fabaceae ...
The main objective of this work is to search for microorganisms capable of degrading lignocellulosic biomass by lignocellulosic enzymes and more particularly, hemicellulase. The exploration of soil samples from two forests ...