University IbnTofail

Kenitra, Morocco

University IbnTofail

Kenitra, Morocco
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Saadouni M.,Université Ibn Tofail | Larouj M.,University IbnTofail | Salghi R.,University Ibn Zohr | Lgaz H.,University IbnTofail | And 5 more authors.
Der Pharmacia Lettre | Year: 2016

The inhibition effect of sulfathiazole (STZ) on the corrosion inhibition of mild steel in 1.0 M HCl solution was studied by polarization, EIS, weight loss measurements and quantum chemical calculation. It was found that the inhibitor was effective and the inhibition efficiency was significantly increased with increasing concentration. Polarization curves revealed that the used inhibitor represent mixed-type inhibitor. Adsorption of the inhibitor led to a reduction in the double layer capacitance and an increase in the charge transfer resistance, and was found also to obey Langmuir isotherm. A good correlation between theoretical data and experimental data has been obtained.


Saadouni M.,Université Ibn Tofail | Larouj M.,University IbnTofail | Salghi R.,University Ibn Zohr | Lgaz H.,University IbnTofail | And 5 more authors.
Der Pharmacia Lettre | Year: 2016

In this work, we studied the effect of inhibition of Sulfaguandine(SFG) against corrosion of the carbon steel in hydrochloric acid 1.0M HCl. For this, we used the weight loss measurements and electrochemical methods such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Results obtained revealed that SFG performed excellently as a corrosion inhibitor for carbon steel in hydrochloric acid solution. Inhibition efficiency increases with increase in concentration of SFG. The efficiency reaches a maximum value of 95.71% at 5×10-3M. Electrochemical methods show that it acts as mixed-type inhibitor with predominant cathodic action. The SFG admits as the Langmuir adsorption. The thermodynamic activation parameters for the corrosion reaction were calculated and discussed in relation to the stability of the protective inhibitor layer. Attempt to correlate the molecular structure to quantum chemical indices was made using density functional theory (DFT).


Adardour L.,University IbnTofail | Adardour L.,University Sidi Mohammed Ben Abdellah | Lgaz H.,University IbnTofail | Lgaz H.,University Ibn Zohr | And 7 more authors.
Der Pharmacia Lettre | Year: 2016

The inhibition effect of Sulfamethoxypyridazine(SMP) against mild steel corrosion in 2.0 M H3PO4 was evaluated using weight loss and electrochemical techniques (potentiodynamic polarization and electrochemical impedance). The experimental results showed that SMP is a good corrosion inhibitor and the inhibition efficiency increased with the increase of SMP concentration, while the adsorption followed the Langmuir isotherm. Theoretical calculation was carried out to establish mechanism of corrosion inhibition for mild steel with SMP in 2.0 M H3PO4 medium. The inhibition action of the compound was assumed to occur via adsorption on the steel surface through the active centers in the molecule. The corrosion inhibition is due to the formation of a chemisorbed film on the steel surface.


Adardour L.,University IbnTofail | Adardour L.,University Sidi Mohammed Ben Abdellah | Lgaz H.,University IbnTofail | Lgaz H.,University IbnZohr | And 7 more authors.
Der Pharmacia Lettre | Year: 2016

The corrosion inhibition efficiency of Sulfapyridine(SFP) for carbon steel in 2.0 M H3PO4 has been studied using weight loss, polarization, electrochemical and impedance spectroscopy techniques. The results show that SFP is a good inhibitor in 2.0 M H3PO4. Effects of temperature and acid concentration on inhibitive performance were investigated. Polarization curves reveal that SFP acts as a mixed-type inhibitor. The electrochemical impedance spectroscopy showed that the charge transfer resistance increases and the double layer capacitance decreases on increasing Sulfapyridine concentration. Activation energy of corrosion and other thermodynamic parameters such as standard free energy, standard enthalpy, and standard entropy of the adsorption process revealed better and well-ordered physical adsorption mechanism in the presence of Sulfapyridine. Adsorption isotherms in absence or presence of SFP as inhibitor appropriately fit the Langmuir isotherm. Theoretical investigations have established that the interaction of SFP with the metal steel surface is mainly through the Nitrogen, oxygen atoms, sulphonyl group and the p system of the aromatic ring.


Btissam R.,Abdelmalek Essaadi University | Rajae R.,University IbnTofail | Amina A.,Abdelmalek Essaadi University | Brigitte V.,University of Poitiers | Mohamed N.,Abdelmalek Essaadi University
Pharmacognosy Journal | Year: 2015

Introduction: We have carried out our study on the chemical composition; anti-glycation andradical scavenging activities of Origanum compactum, Rosmarinus officinalis and Pelargonium asperum essential oils (EO) that were harvested in the northeast of Morocco. These plants have been traditionally used in medicine as a chief ingredient of many polyherbal formulations for the treatment of several pathologies. Method: The phytochemical study was revealed by GC-MS. The protein glycation inhibitory activity of EO extracted from these plant tissues was evaluated in vitro using the model system of bovine serum albumin and methylglyoxal. The measure of DPPH• radical reducing power was used to evaluate the antiradical activity. To test each fraction, we used the IC50 value previously obtained for the crude oils. Results: The phytochemical study of these essential oils showed that p-Thymol, Eucalyptol and Citronellal were respectively the major components in the three investigated EO of O.compactum, R. officinal is and P. asperum. More than 90% of the total components were detected. The extracts and fractions with glycation inhibitory activity also showed antiradical activity when the DPPH• radical reducing power was measured. Conclusion: The glycation inhibitory activity was correlated with the antiradical potency of the extracts. Thus, the positive glycation inhibitory and antiradical activities of these plants might suggest a possible role in targeting aging and diabetic complications.The presence of various bioactive compounds confirms the application of these plants for various diseases by traditional practitioners. However, isolation of individual phytochemical constituents may proceed to find a novel drug.


Larif M.,University IbnTofail | Saouide El Ayne N.,University IbnTofail | Echchelh A.,University IbnTofail | Chaouch A.,University IbnTofail | Soulaymani A.,University IbnTofail
Journal of Chemical and Pharmaceutical Research | Year: 2014

The environment is implicated as a source of healthcare-associated infections (HAIs) and there is a need for evidence-based approaches to environmental sampling to assess cleanliness and improve infection prevention and control. Our objective is to study the basic principles of prevention and control of the infections that may be acquired in health-care facilities (but does not address other aspects of hospital hygiene (Region Rharb, Kenitra, Morocco)and safety such as pressure sores and the risk of falls). The multivariate statistical techniques (i.e., principal component analysis (PVA), the multiple linear regression (M LR) and partial least square (PLS) have been used to evaluate the pattern of the relationship among variables. The ACP allowed us to observe two groups (GA) correlation between the different services and the group germs (GB) where there is predominance of bacteria: Bacillus and Klebsiela pneumoniae in service resuscitation. Partial least square regression (PLS) and the (MLR), have shown a correlation coefficient respectively of 0.999 and 0.995.The regression model obtained suggested that the proposed combination could be useful for predicting the total percentage of different bacteria. The predicted values of activities are in good agreement with the experimental results. © 2014, Journal of Chemical and Pharmaceutical Research. All rights received.


Chellouli M.,University IbnTofail | Chebabe D.,University IbnTofail | Dermaj A.,University IbnTofail | Erramli H.,University IbnTofail | And 6 more authors.
Electrochimica Acta | Year: 2016

In this work the corrosion inhibition of iron in acidic solution by a formulation based on the oil extracted from the seeds of Nigella Sativa L. (labeled as FBN) was investigated by means of potentiodynamic polarization, electrochemical impedance spectroscopy and weight loss measurements. Results showed that the formulation acts as a good mixed type (cathodic/anodic) inhibitor. The dissolution rate decreased with the increase of the FBN concentration and the immersion time. An inhibition efficiency of 99% was reached for FBN concentration at 2500 ppm. Surface analysis of the samples was performed by Scanning Electron Microscopy coupled with chemical analysis (SEM-EDS) and X-ray Photoemission Spectroscopy (XPS). Results confirmed a good protective action of the FBN film on the iron substrate in acidic solution. The FBN formulation is a not toxic and environmentally safe product, as determined by acute toxicity tests, and can be fruitfully used for a sustainable conservation of iron-based artifacts. © 2016 Elsevier Ltd. All rights reserved.


El Boukili A.,Mohammed V University | Guessous A.,Mohammed V University | El bazaoui A.,University IbnTofail | El Kacemi K.,Mohammed V University | And 2 more authors.
Journal of Materials and Environmental Science | Year: 2015

The aim of this work is to investigate four samples of agricultural cereal soil, collected in four regions of Morocco: Tadla-Azilal, Chaouia-Ouardigha, Rabat-Sale and Meknes-Tafilalet. Mineralogical composition was determined by X-ray Fluorescence analysis (FX). Thermal analysis, Infrared spectroscopy (IR) and X-ray diffraction (XRD) analysis were performed to characterize the studied soils. The results, of the FX analysis, showed that the most abundant major components are silica, alumina, iron oxide, calcium oxide, magnesium oxide and the organic component. The XRD patterns confirm that the soil from Tadla-Azilal region consists of Quartz, Calcite, Illite and Kaolinite. The soil sample of Khouribga consists of Quartz, Calcite and Dolomite. The soil sample from Rabat-Salé-Zemmour consists of Quartz and Mica. The soil sample Meknes-Tafilalet consists of Quartz and Muscovite. The results of IR and thermal analysis confirm the mineralogical phases identified by XRD and lay in evidence the existence of organic matter in the four soil samples.


Fdili O.A.,Mohammed V University | Fakhri Y.,Mohammed V University | Fakhri Y.,University IbnTofail | Aboutajdine D.,Mohammed V University
International Journal of Communication Networks and Information Security | Year: 2012

Wireless Sensor Networks (WSNs) are increasingly used and will certainly be part of our everyday lives. Many routing protocols were designed with respect to WSNs capacities to allow the achievement of numerous applications. One of the not well investigated areas in WSNs is the queue management issue. The purpose of this paper is to present an analysis of the impact of queue buffer size awareness on the Quality of Service (QoS) of real-time (RT) routing protocols in WSNs. The studied protocols are SPEED and its extension Multipath Multi-speed (MMSPEED). SPEED protocol yields RT routing for only one class of traffic, by maintaining a desired packet's progression speed (PS) across the WSN. On the other hand, MMSPEED protocol extends SPEED by offering multiple types of service to packets according to their class of traffic. The main contribution is that the routing decision is made on neighbors' available queue buffer size at each level in addition to PS metric. Simulations have proved that the two metrics are compatible, the routing decision is efficient in case of single service protocol and multiservice one and improves two QoS domains namely timeliness and reliability.


Berradi M.,University IbnTofail | Essamri A.,University IbnTofail | El Harfi A.,University IbnTofail
Journal of Materials and Environmental Science | Year: 2016

During the present study, we conducted a research which is to develop an organic and asymmetric membrane polysulfonePSU UDEL P1700 by the technique of phase inversion, and to apply this film active supported in the discoloration of wastewater loaded with templates of vat dyes; indigo and sulphur black, while using and optimizing the treatment of effluents from textile finishing by ultrafiltration. According to the optimization and characterization of the hydrodynamic conditions of the membrane obtained, we purified directly the colored solutions models of water. The results of the optimization of the membranes showed that the synthesized membranewith a more efficient mechanical and hydraulic properties in percentage by weight of polymer PSU is of the order of 12%on the one hand, and those obtained for the purification of water colored by ultrafiltration have showed that the rate of discoloration is calculated in the range of 80.36% forthe indigo and of the order of 60.78%for the blacksulphur to the other. © 2016.

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