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TiO_2–PANI/Cork composite: A new floating photocatalyst for the treatment of organic pollutants under sunlight irradiation

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Journal of Environmental Sciences 2017年第10期29卷 3-13页

作者： Mouheb Sboui mohamed faouzi Nsib Ali Rayes Meenakshisundaram Swaminathan Ammar Houas Laboratory CI-Sfax Faculty of Science University of Sfax URCMEP (UR11ES85) Faculty of Sciences University of Gabès National School of Engineers (ENIG) University of Gabès High School of Sciences and Technology of Hammam Sousse University of Sousse Nanomaterials Laboratory International Research Centre Kalasalingam University Al Imam Mohammad Ibn Saud Islamic University (IMSIU) College of Sciences Department of Chemistry

A novel photocatalyst based on TiO2-PANI composite supported on small pieces of cork has been reported. It was prepared by simple impregnation method of the polyaniline（PANI）-modified TiO2 on cork. The TiO2-PANI/Cork catalyst shows the unique feature of floating on the water surface. The as-synthesized catalyst was characterized by X-ray diffraction（XRD）,scanning electron micrograph（SEM）, transmission electron microscopy（TEM）, thermogravimetric analysis（TGA）, Fourier transform infrared spectroscopy（FT-IR）, UV-vis diffuse reflectance spectra（UV-vis DRS） and the Brunauer-Emmett-Teller（BET） surface area analysis. Characterization suggested the formation of anatase highly dispersed on the cork surface. The prepared floating photocatalyst showed high efficiency for the degradation of methyl orange dye and other organic pollutants under solar irradiation and constrained conditions, i.e., no-stirring and no-oxygenation. The TiO2-PANI/Cork floating photocatalyst can be reused for at least four consecutive times without significant decrease of the degradation efficiency.

关键词： TiO2 Polyaniline Cork Floating catalyst Photodegradation Solar light

Contribution of the FPGAs for Complex Control Algorithms: Sensorless DTFC with an EKF of an Induction Motor

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International Journal of Automation and computing 2019年第2期16卷 226-237页

作者： Saber Krim Soufien Gdaim Abdellatif Mtibaa mohamed faouzi Mimouni Laboratory of Electronics and Microelectronics EE Faculty of SciencesUniversity of Monastir Research Unit "Industrial Systems Study and Renewable Energy" University of Monastir Polytechnic School of Engineering (PSE) University of Sousse National Engineering School University of Monastir

In a conventional direct torque control(CDTC) of the induction motor drive, the electromagnetic torque and the stator flux are characterized by high ripples. In order to reduce the undesired ripples, several methods are used in the literature. Nevertheless,these methods increase the algorithm complexity and dependency on the machine parameters such as the space vector modulation(SVM). The fuzzy logic control method is utilized in this work to decrease these ripples. Moreover, to eliminate the mechanical sensor the extended kalman filter(EKF) is used, in order to reduce the cost of the system and the rate of maintenance. Furthermore, in the domain of controlling the real-time induction motor drives, two principal digital devices are used such as the hardware(FPGA) and the digital signal processing(DSP). The latter is a software solution featured by a sequential processing that increases the execution time. However, the FPGA is featured by a high processing speed because of its parallel processing. Therefore, using the FPGA it is possible to implement complex algorithms with low execution time and to enhance the control bandwidth. The large bandwidth is the key issue to increase the system performances. This paper presents the interest of utilizing the FPGAs to implement complex control algorithms of electrical systems in real time. The suggested sensorless direct torque control using the fuzzy logic(DTFC) of an induction motor is successfully designed and implemented on an FPGA Virtex 5 using xilinx system generator. The simulation and implementation results show proposed approach s performances in terms of ripples, stator current harmonic waves, execution time, and short design time.

关键词： Direct torque control fuzzy logic control (FLC) extended Kalman filter Xilinx system generator (XSG) field programmable gate array (FPGA)

Unusual combined fracture dislocation of the wrist and metacarpophalangeal joints： a case report and review of the literature

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Chinese Journal of Traumatology 2011年第2期14卷 123-125页

作者： mohamed faouzi Hamdi Department of Trauma and Orthopaedic Surgery F. Bourguiba University Hospital 5000 Monastir Tunisia

Volar perilunate fracture dislocation is an extremely rare carpal injury, but associated with metacarpophalangeal joint dislocation of both the ipsilateral index and middle finger has never been reported. We report one case of a 28-year-old man following a high-energy trauma. After performing closed reduction of the metacarpophalangeal joint injury, open reduction of the wrist injury through volar approach was done, and a K-wire fixation was used to stabilize the scaphoid fracture and lunotriquetral joint. After a 16 months＇ follow-up period, the wrist regained a full range of motion without symptoms, and the fractured bone was strengthened in a good position.

关键词： Fractures, bone Dislocations Carpal bone Metacarpophalangeal joint

Upper limb compartment syndrome after an adder bite： a case report

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Chinese Journal of Traumatology 2010年第2期13卷 117-119页

作者： mohamed faouzi Hamdi Sayed Baccari Mehdi Daghfous Lamjed Tarhouni Department of Trauma and Orthopaedic Surgery Hospital of Fattouma Bourguiba University Monastir 5000 Tunisia Department of Hand and Reconstructive Surgery Institute Kassab of Trauma and Orthopaedic Surgey Manouba 2010 Tunisia

Compartment syndrome after an adder bite is extremely rare, whose effects are only secondary to the cytotoxic and hemorrhagic effects of venom. Here we reported a case of compartment syndrome in the upper limb following an adder bite in the thenar eminence. Elevated compartment pressure was documented and immediate surgical fasciotomy was practiced. The patient achieved complete recovery with a good functional result. We discussed the controversies on fasciotomy and non-invasive measures in such a situation, and recommended intracompartmental pressure monitoring during the management of compartment syndrome following adder bites.

关键词： Snake bites Compartment syndromes Fascia

Nonunion of the scaphoid treated by anterior vascularized bone graft： a review of 26 cases

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Chinese Journal of Traumatology 2011年第4期14卷 205-208页

作者： mohamed faouzi Hamdi Karim Amara Lamjed Tarhouni Sayed Baccari Department of Trauma and Orthopaedic Surgery F.Bourguiba University Hospital Monastir 5000 Tunisia Department of Hand and Reconstructive Surgery Institute Kassab of Trauma and Orthopaedic SurgeyManouba 2010 Tunisia

[Abstract] Objective： To evaluate the clinical and radiological outcome of anterior vascularized bone graft in the treatment of primitive nonunion of the scaphoid. Methods： This is a retrospective study of 26 scaphoid nonunion cases treated by this technique between 2004 and 2009. The mean age was 38 years. Nonunion was of types IIA and IIB according to the Alnot＇s classification and only one case showed a proximal pole necrosis （type IV）. The fixation was ensured by K-wire. The mean immobilization period was 9 weeks. Results： At mean 19 months follow-up, the bone union rate was 88.5%. Failure was noted in three cases. No significant complications secondary to this technique were observed. The mobility in extension and flexion had an average recovery of 18°. Nineteen patients （73%） were free of pain, and the others had occasional pain Conclusions： It is a meticulous surgical technique that provides better union rates than those of conventional scaphoid graft. This technique is first adopted in cases of failure of conventional grafts in the treatment of scaphoid nonunion but the encouraging results suggest expanding indications to primitive nonunion.

关键词： Scaphoid bone Pseudarthrosis Bone transplantation Radius

杂化化合物(C_(7)H_(11)N_(2))_(2)[CdCl_(4)]·0.5H_(2)O的晶体结构、光谱表征和光学性质

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无机化学学报 2022年第9期38卷 1834-1842页

作者： Fatma Garci Axel Klein Hammouda Chebbi mohamed faouzi Zid University of Tunis El Manar Faculty of Sciences of TunisLaboratory of MaterialsCrystal Chemistry and Applied ThermodynamicsTunisTunisia University of Cologne Faculty of Mathematics and Natural SciencesDepartment of ChemistryInstitute for Inorganic ChemistryCologneGermany University of Tunis Preparatory Institute for Engineering Studies of TunisTunisTunisia

开发了标题化合物(C_(7)H_(11)N_(2))_(2)[CdCl_(4)]·0.5H_(2)O(C_(7)H_(11)N_(2)=4-(二甲基氨基)吡啶鎓)的制备程序,并得到良好的收率和纯度。Cd离子在略微扭曲的四面体环境中与4个氯离子配位。晶体排列显示出层状结构,有机层和无机... 详细信息

开发了标题化合物(C_(7)H_(11)N_(2))_(2)[CdCl_(4)]·0.5H_(2)O(C_(7)H_(11)N_(2)=4-(二甲基氨基)吡啶鎓)的制备程序,并得到良好的收率和纯度。Cd离子在略微扭曲的四面体环境中与4个氯离子配位。晶体排列显示出层状结构,有机层和无机层交替排列,平行于(001)平面,位于x=n+1/2(n∈Z)。在晶体中,有机层和无机层通过C—H…Cl、C—H…O、N—H…Cl和N—H…O氢键相互作用连接。Hirshfeld表面分析和结构的指纹图表明分子堆积受氢键和π堆积的控制。UV-Vis漫反射光谱使我们能够用Tauc外推法确定具有半导体特性的3.596 eV的直接带隙。观察到的在562 nm处具有最大值的光致发光带归属于4-(二甲基氨基)吡啶鎓阳离子中的激发π-π*态。

关键词：氯镉(Ⅱ)配离子 4-二甲氨基吡啶鎓晶体结构 Hirshfeld表面分析光致发光

Comparative Performance of Fixed-Speed and Variable-Speed Wind Turbine Generator Systems

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Journal of Mechanics Engineering and Automation 2011年第1期1卷 74-81页

作者： mohamed Mansour mohamed Nejib Mansouri mohamed faouzi Mimouni Electrical Engineering Department Engineering School of Monastir Monastir 5019 Tunisia

In the early development of the wind energy, the majority of the wind turbines have been operated at constant speed. Subsequently, the number of variable-speed wind turbines installed in wind farms has increased. In this paper, a comparative performance of fixed and variable speed wind generators with Pitch angle control has been presented. The first is based on a squirrel cage Induction Generator （IG） of 315 kW rated power, connected directly to the grid. The second incorporated a Permanent Magnet Synchronous Generator （PMSG） of 750 kW rated power. The performances of each studied wind generator are evaluated by simulation works and variable speed operation is highlighted as preferred mode of operation.

关键词： Fixed speed wind generator variable speed wind generator squirrel cage induction generator permanent magnet synchronous generator (PMSG) maximum power point tracking (MPPT) pitch control.

Intelligent Intrusion Detection System for the Internet of Medical Things Based on Data-Driven Techniques

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Computer Systems Science & Engineering 2023年第11期47卷 1593-1609页

作者： Okba Taouali Sawcen Bacha Khaoula Ben Abdellafou Ahamed Aljuhani Kamel Zidi Rehab Alanazi mohamed faouzi Harkat Faculty of Computers and Information Technology University of TabukTabuk71491Saudi Arabia National Engineering School of Monastir University of MonastirMonastir5000Tunisia Applied College University of TabukTabuk71491Saudi Arabia Department of Electronics Faculty of Engineering AnnabaAnnaba23000Algeria

Introducing IoT devices to healthcare fields has made it possible to remotely monitor patients’information and provide a proper diagnosis as needed,resulting in the Internet of Medical Things(IoMT).However,obtaining good security features that ensure the integrity and confidentiality of patient’s information is a significant ***,due to the computational resources being limited,an edge device may struggle to handle heavy detection tasks such as complex machine learning ***,designing and developing a lightweight detection mechanism is *** address the aforementioned challenges,a new lightweight IDS approach is developed to effectively combat a diverse range of cyberattacks in IoMT *** proposed anomaly-based IDS is divided into three steps:pre-processing,feature selection,and *** the pre-processing phase,data cleaning and normalization are *** the feature selection step,the proposed approach uses two data-driven kernel techniques:kernel principal component analysis and kernel partial least square techniques to reduce the dimension of extracted features and to ameliorate the detection ***,in decision step,in order to classify whether the traffic flow is normal or malicious the kernel extreme learning machine is *** check the efficiency of the developed detection scheme,a modern IoMT dataset named WUSTL-EHMS-2020 is considered to evaluate and discuss the achieved *** proposed method achieved 99.9%accuracy,99.8%specificity,100%Sensitivity,99.9 F-score.

关键词： Machine learning data-driven technique KPCA KPLS intrusion detection IoT Internet of Medical Things(IoMT)

Integration of Remote Sensing and GIS in Studying Land Cover Trends and Conditions in the Middle Ziz Oasis,Morocco

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International Journal of Geosciences 2013年第7期4卷 1018-1023页

作者： Ali Essahlaoui Abba mohamed Eddahby Lhou faouzi mohamed Larabi Abdelkader Research Group“Water Sciences and Environmental Engineering” Laboratory of Geo-Engineering and EnvironmentFaculty of SciencesMy Ismail UniversityMeknesMorocco Laboratory LIMEN“Water Resources&Information Technology” Mohammadia School of EngineersRabatMorocco Department of Geology Faculty of SciencesDhar El MahrazFezMorocco

A better understanding of the changing patterns of land use and vegetation cover is a major concern for countries whose ecosystems are under severe degradation. Indeed, the dynamics of land have direct implications on the availability of natural resources. The palm grove, of oases of Errachidia region, plays an important role in the environmental, social and economic of this region. This research was conducted in the Ziz middle, which is affected by changes in the conditions and composition of land cover change. The application of remote sensing, geographic information systems and satellite imagery analysis with multi-temporal and spatial land use provides, for territorial managers, data updated and improved and a synopsis for effective management of natural resources. This research explores the possibility of identifying, monitoring and mapping land use change and land use on the dynamics of the palm grove in the past 40 years. Satellite images used are Landsat images and multi-temporal dates (MSS (1972), TM (1987), ETM + (2001, 2006 and 2011). These images were georeferenced and radiometrically corrected. In our study, the use of vegetation indices NDVI, SAVI and MASAVI, highlight the magnitude of changes in vegetation cover between 1972 and 2011. A regressive pronounced canopy is generally recognized in the Middle Ziz. This decline is explained by the combined effect of anthropic action (urbanization) and climatic conditions.

关键词： Morocco Remote Sensing GIS Ziz Watershed Dynamic of Land Use NDVI