Wastewater treatment plants are dynamic systems subject to wide and uncontrolled variations of flow, concentration and composition of effluents crossing-by the plant. Mathematical models are essential to describe, predict and control the variation of method such process. The aim of this work is to develop a model for monitoring the process of an activated sludge waste water treatment plant located in the suburb or Rabat, the capital of Morocco. Data of the several physic-chemical parameters (i.e. biochemical oxygen demand -BOD5; chemical oxygen demand -COD; flow; total phosphorus; total nitrogen; dissolved oxygen; suspended solids (SS , MVS ); temperature (T);and pH) were recorder over the period 2004-2008 and assessed using multidimensional data analysis methods for correlations. Results showed a significant correlation between SS and SLE and between BOD5 and COD. Moreover, a significant correlation between MVS and MES, and between BOD5 and total nitrogen were observed at the at process output. Regression of least squares partial (PLS) was performed on significant parameters and resulted in three equations, with significant correlation coefficients suggesting a good sensitivity of the built model.

Fractures among children present a quarter of all injuries and lead to frequent visits to pediatric emergencies department. The aim of this study is to report the epidemiological profile of extremity fractures among children related to home and leisure activities. Materials and methods : a retrospective study concerning patients with fractures resulting in hospitalization in the pediatric emergencies department at the Childern

Aim: To determine the epidemiological profile of bone and joint infections among children above 3 years old that were admitted in the surgical pediatric emergencies department, in the Children

The study's objective was to assess the role of toxicological screening by high performance liquid chromatography with diode array detection (HPLC-DAD) in diagnosis of drug intoxication to compare those results with results obtained by immunoassay and colorimetric tests.
This prospective study was carried out over a period of one year (2012) at the Laboratory of Moroccan Poison Control and Pharmacovigilance Center. Toxicological screening was performed by using HPLC-DAD, immunoassay and colorimetric tests using plasma and urine of 107 patients. The plasma sample was submitted to a liquid-liquid extraction. The residue was subjected to HPLC-DAD using prazepam as the internal standard. The separation was carried out on an ODS-Hypersil column with phosphate buffer /acetonitrile as the mobile phase. The screening immunoassay and colorimetric tests have been applied to urine samples.
The most common drugs present were benzodiazepines (39, 44%) and antidepressants (23, 94%). The results showed a good agreement (67.29 %) between the results of screening by HPLC-DAD and results obtained by immunoassay and colorimetric tests. The discordance was occurred in 32.71%.
In our study, the causes of discordance were technical limits. It was the absence of the molecule suspected at the spectral library or the similarity of the UV-spectra. In other cases the toxicokinetic of the suspected substance influence the results; the compound is metabolized or even eliminated or the identified drug is administered to the patient as symptomatic treatment.
Data analysis shows that toxicological screening by HPLC -DAD allows the identification of unrecognized drugs by immunoassay and colorimetric tests. This method can simultaneously identify several molecules belonging to different classes of drugs.