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Sirte, Libya

Sirte University is a public university in the city of Sirte, Libya, with a campus also at Hun. It was established as a university in 1991; for the two years before that, it was operated as a branch of Benghazi University.There are thirteen faculties, or schools:Agriculture Faculty1) Department of Soil and Water 2) Department of Plant Production and Plant Protection3) Department of Animal Production 4) Department of Economics and Agricultural Extension5) Department of Food Science Technology 6) Department of Natural Resources7) Department of Agricultural MechanizationArts & Literature FacultyDentistry CollegeEconomics FacultyEconomics Faculty at HounEducation CollegeEducation College at HounEngineering Faculty Mechanical Engineering Petroleum Engineering Electrical Engineering.CollegeInformation Technology FacultyLaw FacultyMedicine FacultyNursing CollegeScience Faculty1) Department of Chemistry2) Department of Mathematics3) Department of Computer Science4) Physics Department5) Department of Animal Science6) Department of Plant science↑ ↑ ↑ ↑ ↑ Wikipedia.

This work deals with the new technique employed in the fabrication of thick film which includes material selection, functional materials, milling / drying / pressing, firing and cooling, binder / solvent, substrate preparation, pastes preparation, the screen printing process and drying the sensing layers. A novel approach to electronic nose-head design, using a copper thin film electrode patterning technique was used to deposit electrodes on the alumina substrate. The responses of the sensors to propanol was investigated. The response / recovery times of all the sensors were improved compared to those deposited on glass substrates. For example, the response time for all the NiO / Fe 2O3 devices at 4000 ppm was less than 10 sec., while the recovery time were 30 sec for both the 75 / 25 and the 50 / 50 mol. % NiO / Fe2O3 sensors and 20 sec for the 75 / 25 % NiO / Fe 2O3 sensor. The response / recovery times of those sensors fabricated on glass substrates were 30 / 45, 45 / 55 and 60 / 85 at the same solvent vapour and concentration. © (2014) Trans Tech Publications. Source

Gaidan I.,Sirte University
Key Engineering Materials

Different ratios of MnO2 / Fe2O3, were used after being fired to form thick film gas sensors. The films were deposited on alumina substrates. The response of the sensors for a concentration range of 2500-5000 ppm increasing by a step size of 500 ppm of propanol at room temperature was investigated. The highest response was with the 75 / 25 MnO 2 / Fe2O3 sensor followed by the 25 / 75 and 50 / 50 MnO2 / Fe2O3 sensors. The repeatability of the 75 / 25 mol. % MnO2/ Fe2O3 to propanol at two concentration ranges 500 -3000 and 2500 - 5000 ppm increasing with a step size of 500 ppm at room temperature was reported. The X-Ray Diffraction (XRD) is used to determine the final composition of the materials after firing. The XRD results show that MnO2 reacts with Fe2O3 to form FeMn2O4with Fe2O3 and Fe 3O4. © (2014) Trans Tech Publications. Source

Musbah I.,Sirte University | Ciceron D.,LSPC | Saboni A.,Boulevard Of Luniversite | Alexandrova S.,LaTEP EA1932

This study is focused on the possibility of pesticide and DEA elimination by nanofiltration using NF and OPMN-K membranes. Experiments are carried out on laboratory equipment in batch circulation and applied pressures vary between 10 and 25. bars. Three common pesticides (simazine, atrazine, diuron) and a chlorinated metabolite of atrazine: diethylatrazine is used as solutes, either alone or in complex solutions.For all experiments, NF shows better performance compared to OPMN-K. The most retained pesticide is atrazine and the least retained is diuron due to its higher dipole moment (high carbonyl group contribution) coupled to linear form which may also induce a decrease in its steric retention. In the case of pesticide/DEA mixtures, DEA rejection is better (up to 44%) for all pressures due to the formation of macromolecular complexes. It is also noticed that molecular weight and size, expressed by Stokes radius, are not the only parameters influencing rejection: shape of the molecule (molecular length and width) has a strong influence on rejection. The observed rejection increases when length and width increase.The nanofiltration technology seems to be a good way to treat the problem of pesticide pollution in one step process. © 2012 Elsevier B.V. Source

Amreiz H.M.,Sirte University
Electrical Systems for Aircraft, Railway and Ship Propulsion, ESARS

Finite element analysis is the most widely used numerical method for transient and steady state solutions of both 2D and 3D electromagnetic problems. It permits accurate modelling of complex geometries with non-linear material properties. © 2012 IEEE. Source

Zidan M.,Sebha University | Zawawi R.M.,University Putra Malaysia | Erhayem M.,Sebha University | Salhin A.,Sirte University
International Journal of Electrochemical Science

A very sensitive electrochemical sensor has been developed by modification of glassy carbon electrode (GCE) with graphene oxide (GO). The electrochemical behavior of paracetamol was studied at GO/GCE using cyclic voltammetry (CV) and square-wave voltammetric techniques (SWV). A well defined oxidation peak was observed in 0.1 M KH2PO4 electrolyte solution by solid phase voltammetry. Under the CV techniques, it appears that the catalytic effect of the modification on graphene oxide GO/GCE shows higher current response as compared to bare GCE. Observed peak potential was shifted to less positive value by about 220 mV and current was significantly enhanced by about 2 folds. Square-wave voltammetry showed higher sensitive response than CV techniques, where current was significantly enhanced by more than 2 folds. Under the optimum conditions, the oxidation peak current of paracetamol varied linearly with concentration over a wide range of 5 x 10-8 mol L-1 to 1 x10-6 mol L-1 and the detection limit of this method was as low as 4.9 x 10-8 M. © 2014 The Authors. Source

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