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Search Results: 1 - 10 of 39 matches for " Mouloud Lamtai "
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Effect of Chronic Aluminum Administration on Affective and Cognitive Behavior in Male and Female Rats  [PDF]
Oussama Zghari, Ayoub Rezqaoui, Sihame Ouakki, Mouloud Lamtai, Jihane Chaibat, Abdelhalem Mesfioui, Aboubaker El Hessni, El-Housseine Rifi, Azzouz Essamri, Ali Ouichou
Journal of Behavioral and Brain Science (JBBS) , 2018, DOI: 10.4236/jbbs.2018.84012
Abstract: In this study, we investigated the effect of chronic exposure of low doses of Aluminum on affective and cognitive disorders in male and female rats. Twenty-five rats for each gender are used and the treatment carried out for 8 weeks. Animals received distilled water for control or an intraperitoneal injection of different doses of Aluminum: 0.125, 0.25, 0.5 and 1 mg/kg. Behavioral performance is measured in various tests mainly the Open Field, Elevated Plus Maze, Force Swimming Test, Morris Water Maze, Y-maze and Object Recognition Test. Al exerts anxiogenic properties and depressive effect. The effect begins at 0.25 mg/kg to reach a maximum at 1 mg/kg. In addition, chronic exposure to Aluminum causes cognitive disorders characterized by affection of memory and influence spatial learning performance. The effect of Aluminum on working memory is effective just at 1 mg/kg, while the effect on spatial learning performance begins at 0.25 mg/kg to reach a maximum at 1 mg/kg. In conclusion, Aluminum enhances anxiety and depression parameters and cognitive disorders characterized by the affection of memory and spatial learning performance.
Effect of Chronic Administration of Cadmium on Anxiety-Like, Depression-Like and Memory Deficits in Male and Female Rats: Possible Involvement of Oxidative Stress Mechanism  [PDF]
Mouloud Lamtai, Jihane Chaibat, Sihame Ouakki, Inssaf Berkiks, El-Housseine Rifi, Aboubaker El Hessni, Abdelhalem Mesfioui, Ali Tadlaoui Hbibi, Hassna Ahyayauch, Azzouz Essamri, Ali Ouichou
Journal of Behavioral and Brain Science (JBBS) , 2018, DOI: 10.4236/jbbs.2018.85016
Abstract: The main objective of this work is to study the effect of chronic administration of cadmium (Cd) on the level of depression-like, anxiety-like, memory state and oxidative stress in male and female Wistar rats. For this purpose, this study was conducted with 24 rats for each gender. Four groups were constituted: (Group 1: Control): received saline solution NaCl (0.9%), (Group 2: Cd-0.25; Group 3: Cd-0.5; Group 4: Cd-1): received daily 0.25 mg/kg, 0.5 mg/kg and 1 mg/kg of Cd respectively during 8 weeks. After treatment period, animals were tested in the open-field, elevated plus maze tests for anxiety-like behavior, and forced swimming test for depression-like behavior. The Y maze was used to evaluate the working memory and the Morris Water Maze, to evaluate space learning and spatial memory. The results revealed that in males, all doses of Cd provoke depression-like, while in females only the group treated with 1 mg/kg Cd shows elevated depression-like behavior. In regard to anxiety-like behavior, Cd induces an anxiogenic effect in both genders tests. In the Y-Maze test, both males and females expressed a low percentage of alternations, suggesting that working memory was affected by Cd at 1 mg/kg. In the Morris Water Maze test, the space learning and spatial memory were significantly impaired in the group Cd-1. Neurochemical analysis showed that levels of nitric oxide and lipid peroxidation in the hippocampus were significantly increased after Cd treatments. Overall analysis of our data revealed that Cd caused significant alterations in the examined parameters that were sex-dependent and dose-dependent.
Affective Behavior Dysregulation Was Induced by Chronic Administration of Copper in Wistar Rats  [PDF]
Mouloud Lamtai, Sihame Ouakki, Oussama Zghari, Abdelhalem Mesfioui, Aboubaker El Hessni, Ali Ouichou
Neuroscience & Medicine (NM) , 2019, DOI: 10.4236/nm.2019.102009
Abstract: As both deficiency and excess of copper (Cu) can be harmful, dysregulation in its homeostasis has been connected with various neurological disorders. The present study was undertaken to examine whether Cu chronic administration can induce alterations of affective behavior especially anxiety and depression levels in male and female rats. Twenty-four rats, for each gender, divided in control and three test groups (n = 6), were injected intraperitoneally with saline (0.9% NaCl) or CuCl2 (0.25 mg/kg, 0.5 mg/kg and 1 mg/kg) for 8 weeks. After treatment period, animals were tested in the open-field, elevated plus maze tests for anxiety-like behavior, and forced swimming test for depression-like behavior. Results demonstrated that Cu administered chronically, exerts an anxiogenic effect in rats. In the OFT, Cu decreases the TCA and NRC parameters without modifying the locomotor activity represented by the NTS parameter. With regard to EPM, Cu decreases TOA and EOA parameters without modifying the TAE parameter. A significant increase in depression-like symptoms was also exhibited by Cu treated rats (p < 0.001). A dose of 1 mg/kg CuCl2 showed maximum anxiety-like and depression-like symptoms as compared to controls as well as from the other two doses indicating dose-dependent effects of chronic Cu administration. Overall, these results suggest that intoxication with Cu has potentially deleterious effects on brain as reflected in behavioral dysfunctions such as depression and anxiety.
Weakly Nonlinear Quantum Dust Ion-Acoustic Waves  [PDF]
Siham Ghebache, Mouloud Tribeche
Open Journal of Acoustics (OJA) , 2013, DOI: 10.4236/oja.2013.32007
Abstract: The one-dimensional quantum hydrodynamic (QHD) model for a three-specie quantum plasma is used to study the quantum counterpart of the well known dust ion-acoustic wave (DIAW). It is found that owing to the quantum effects, the dynamics of small but finite amplitude quantum dust ion-acoustic waves (QDIA) is governed by a deformed Korteweg-de Vries equation (dK-dV). The latter admits compressive as well as rarefactive stationary QDIA solitary wave solution. In the fully quantum case, the QDIA soliton experiences a spreading which becomes more significant as electron depletion is enhanced.

A good conversion loss and a very high LO-to-RF isolation of 24-GHz single balanced mixer for RF front-end receiver
Mouloud Challal
Maejo International Journal of Science and Technology , 2011,
Abstract: This work describes the design, analysis and fabrication of a 24-GHz microwave single balanced down-conversion mixer based on Schottky diode, hybrid ring coupler and a wide and deep stopband low-pass filter (LPF). The LPF is composed of three uniform defected ground structures along with a compensated microstrip line. The selected frequencies are 24.125 GHz for RF signal and 24 GHz for LO signal. When the LO and RF signals are injected as 10 dBm and 0 dBm respectively, a conversion loss of 12.85 dB with an LO-to-RF isolation greater than 38 dB is obtained. The measured results agree well with the simulated results and the reported design.
Fault Detection and Isolation in Industrial Systems Based on Spectral Analysis Diagnosis  [PDF]
Ahmed Hafaifa, Mouloud Guemana, Attia Daoudi
Intelligent Control and Automation (ICA) , 2013, DOI: 10.4236/ica.2013.41006
Abstract:

The diagnoses in industrial systems represent an important economic objective in process industrial automation area. To guarantee the safety and the continuity in production exploitation and to record the useful events with the feedback experience for the curative maintenance. We propose in this work to examine and illustrate the application ability of the spectral analysis approach, in the area of fault detection and isolation industrial systems. In this work, we use a combined analysis diagram of time-frequency, in order to make this approach exploitable in the proposed supervision strategy with decision making module. The obtained results, show clearly how to guarantee a reliable and sure exploitation in industrial system, thus allowing better performances at the time of its exploitation on the supervision strategy.

Impact of the Association of a High Fructose Diet and Chronic Mild Stress on Metabolic and Affective Disorders in Male Rat  [PDF]
Y. Chahirou, M. Lamtai, A. Mesfioui, A. Ouichou, M. Coulibaly, R. Boussekkour, A. El Hessni
Journal of Behavioral and Brain Science (JBBS) , 2018, DOI: 10.4236/jbbs.2018.84010
Abstract: An early unbalanced nutritional diet can induce affective disorders in adulthood. As well as stress in adolescence can accentuate these disorders. Both human and rat structural changes have been demonstrated in the hippocampus, likewise, oxidative stress may be involved in these disturbances. The objective of this study is to see the impact of a high-fructose diet (PN21) associated with chronic mild stress (CMS) at the end of adolescence (PN55) on metabolic and affective disorders in rats Wistar. This study was performed on four groups of male rats: control group, CMS for five weeks (PN55), fructose for ten weeks (PN21) and fructose for ten weeks (PN21) associated with CMS for five weeks (PN55). These animals underwent behavioral tests to evaluate their affective states (open field test, Sucrose preference test). After sacrifice, the dosage of glucose, triglycerides and total cholesterol was performed at the prefrontal cortex (CPF) and also at the hippocampus; the dosage of nitric oxide (NO) was performed, too. The bulk of our results show that fructose induces metabolic disturbances; the CMS induces a state of depression-like, while the association potentiated metabolic disturbances, depression-like state and also inducing anxiety. This study has shown that fructose and CMS can disrupt the various functions of the body and their association can potentiate these disturbances.
Int{é}gration d'une mesure d'ind{é}pendance pour la fusion d'informations
Mouloud Kharoune,Arnaud Martin
Computer Science , 2015,
Abstract: Many information sources are considered into data fusion in order to improve the decision in terms of uncertainty and imprecision. For each technique used for data fusion, the asumption on independance is usually made. We propose in this article an approach to take into acount an independance measure befor to make the combination of information in the context of the theory of belief functions.
Multi-Agent Architecture for the Design of WSN Applications  [PDF]
Abdelhakim Hamzi, Mouloud Koudil, Jean-Paul Jamont, Michel Occello
Wireless Sensor Network (WSN) , 2013, DOI: 10.4236/wsn.2013.52003
Abstract:

Complex and distributed systems are more and more associated with the application of WSN (Wireless Sensor Network) technology. The design of such applications presents important challenges and requires the assistance of several methodologies and tools. Multi-Agent systems (MAS) have been identified as one of the most suitable technologies to contribute to this domain due to their appropriateness for modeling distributed and autonomous complex systems. This work aims to contribute in the help of the design of WSN applications. The proposed architecture exploits the advantages of MAS for modeling WSN services, network topologies and sensor device architectures.

High Performances Concrete in Algeria, for a More Economical and More Durable Concrete (State of the Art Report)
AZI Mohammed Faouzi,Belachia Mouloud
Journal of Engineering and Applied Sciences , 2012,
Abstract: This study is of general nature. It represents a state of art of High and Very High Performance concretes (HPC and VHPC). This type of concrete has been extensively studied during the last decade in many countries, mainly in France, Germany, Japan, Norway, Canada and US. Knowing that the field of construction in Algeria is in full expansion, The objective of this study, is to emphasize the various aspects of this type of concrete (formulation, mechanical properties, durability) and to show structural, economic and environmental advantages in order to encourage manufacture and the use of a local HPC.
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