Fès, Morocco
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Idrissi M.,Tech Lab Group | Miyah Y.,Tech Lab Group | Chaouch M.,University Of Fes | El Ouali Lalami A.,Laboratoire Regional Of Diagnostic Epidemiologique Et Dhygiene Du Milieu | And 3 more authors.
Journal of Materials and Environmental Science | Year: 2014

The wet oxidation using hydrogen peroxide combined with a solid catalyst, CWPO, is an efficient method of treating organic waste in dilute aqueous medium. Its field of application is that of easily biodegradable and sufficiently concentrated to be incinerated waste. The manganese-based catalysts supported on a bentonite enables to make the catalytic oxidation reaction of organic matter by H2O2 in a diluted aqueous medium, CWPO, under mild conditions of temperature and pressure. A series of these catalysts has been studied. We mainly examined the effect of manganese content and the effect of the support.


Bendahmane M.,Al Imam University | Chrif M.,University of Fes | El Manouni S.,Al Imam University
Mathematical Methods in the Applied Sciences | Year: 2010

We deal with the existence and uniqueness of weak solutions for a class of strongly nonlinear boundary value problems of higher order with L1 data in anisotropic-weighted Sobolev spaces of infinite order. Copyright © 2009 John Wiley & Sons, Ltd.


Jones P.W.,St George's, University of London | Shahrour N.,Damascus University | Nejjari C.,University of Fes | Lahlou A.,MS Health | And 3 more authors.
Respiratory Medicine | Year: 2012

The objective of this study was to assess the validity and performance of the Arabic and Turkish versions of the COPD Assessment Test (CAT) for evaluating the severity and impact of COPD symptoms. The data were obtained from the BREATHE study in the Middle East and North Africa region, a large general population survey of COPD conducted in ten countries of the region (Algeria, Egypt, Jordan, Lebanon, Morocco, Saudi Arabia, Syria, Tunisia, Turkey and United Arab Emirates), using a standardised methodology. A total of 62,086 subjects were screened, of whom a random sample of 5,681 subjects were administered the CAT by telephone. 5,639 evaluable questionnaires were recovered, representing a completion rate of 99%. In addition, the CAT was administered to an additional 833 subjects fulfilling the epidemiological diagnostic criteria for COPD. Mean scores in the general population were 6.99±6.91 for the Arabic version and 9.88±9.04 for the Turkish version. In patients with COPD, mean scores were 16.2±9.1 and 20.9±10.2 respectively. Scores were consistently higher in smokers than in non-smokers. In the general population, the proportion of respondents fulfilling criteria for COPD rose with higher CAT scores, and particularly above the 80th percentile, where 63% of COPD cases were to be found. This suggests that the CAT may be useful as a case-finding tool in the general population. In the COPD population, healthcare resource consumption rose linearly with CAT score above a threshold score of twenty, arguing in favour of the good criterion validity of the CAT. The internal consistency of the CAT was high (Cronbach's α 0.85 for the Arabic and 0.86 for the Turkish versions) and the factorial structure was unidimensional. In conclusion, this study performed in Arabic and Turkish speaking populations confirms the utility and validity of the CAT as a simple tool to collect data on the severity and impact of COPD symptoms, and suggests that it may potentially be useful as a case-finding tool to identify people at risk for COPD in the general population. © 2012 Elsevier Ltd.


Idrissi M.,University Of Fes | Lamonier J.-F.,CNRS Laboratory of Catalysis and Solid State Chemistry | Chlala D.,CNRS Laboratory of Catalysis and Solid State Chemistry | Giraudon J.-M.,CNRS Laboratory of Catalysis and Solid State Chemistry | And 3 more authors.
Journal of Materials and Environmental Science | Year: 2014

The air pollution is a problem that is becoming increasingly important, resulting in a significant development of research in the field of volatile compounds in general. Volatile Organic Compounds are dangerous pollutants for human health and harmful for the environment. The elimination of these compounds at low concentrations in the air by catalytic oxidation is a promising approach that allows their destruction selectively and at low temperatures. The search for new catalytic systems adapted to the nature of the VOC process is an important issue. The objective of this study was to compare the effectiveness of various solid catalysts for the removal of VOCs present in trace amounts in air. We examined the effect of the amount of copper oxide deposited on a Moroccan bentonite, treatment of trace toluene in air. The addition of increasing amounts of copper has a positive effect on the activity and selectivity of the catalyst. We have shown that it was not appropriate to file too much copper in bentonite and an amount of 5% CuO enough to oxidize toluene to CO2 and H2O at low temperature. These results are likely explained by a better dispersion of the copper oxide particles to the surface of the clay.


Hemodialysis is the most common alternative to overcome the end-stage renal disease. However, this technique has several undesirable effects such as excessive production of free radicals inducing oxidative stress and production de inflammatory factors involved in the pathophysiology of certain long-term complications. The mastery of oxidative stress and inflammation through the use of more biocompatible membranes and nutritional supplementation strategies could reduce oxidative stress and inflammation and thereby improve long-term prognosis of hemodialysis patients. © 2016 Elsevier Masson SAS.

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