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Journal of Arid Land 2023年第4期15卷 407-423页

作者： Sarra HECHMI Samira MELKI mohamed-naceur khelil Rim GHRIB Moncef GUEDDARI naceur JEDIDI Water Research and Technology Center University of CarthageSoliman 8020Tunisia National Institute for Research in Rural Engineering Water and ForestryAriana 2080Tunisia Faculty of Sciences of Tunis University of Tunis El ManarTunis 2092Tunisia

In Tunisia,water scarcity is only adding pressure on water demand in *** the context of sustainable development goals,Tunisia has been reusing treated wastewater(TWW)as a renewable and inexpensive source for soil fertigation and groundwater(GW)***,major risks can be expected when the irrigation water is of poor *** study aims for evaluating the potential risk of TWW and GW irrigation on soil ***,we evaluated the suitability of water quality through the analysis of major and minor cations and anions,metallic trace elements(MTEs),and the sodium hazard by using the sodium adsorption ratio(SAR)and the soluble sodium percentage(SSP).The risk of soil sodicity was further assessed by SAR and the exchangeable sodium percentage(ESP).The degree of soil pollution caused by MTEs accumulation was evaluated using geoaccumulation index(Igeo)and pollution load index(PLI).Soil maps were generated using inverse spline interpolation in ArcGIS *** results show that both water samples(i.e.,TWW and GW)are suitable for soil irrigation in terms of salinity(electrical conductivity5.00),followed by Ni^(2+)and Pb^(2+).Nevertheless,Cd^(2+)presents the lowest risk of soil pollution(Igeo50.0%).This study shows that the use of imagery tools,such as ArcGIS,can

关键词： treated wastewater metallic trace elements(MTEs) pollution indices sodium adsorption ratio(SAR) geoaccumulation index(Igeo) Tunisia

Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect

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International Soil and Water Conservation Research 2020年第3期8卷 245-252页

作者： Rahma Inès Zoghlami Helmi Hamdi Sonia Mokni-Tlili Sarra Hechmi mohamed naceur khelil Nadhira Ben Aissa mohamed Moussa Habib Bousnina Saoussen Benzarti naceur Jedidi Arid Regions Institute University of GabèsMèdenine4119Tunisia Water Research and Technology Center University of CarthageP.O.Box 273Soliman8020Tunisia Center for Sustainable Development College of Arts and SciencesQatar UniversityP.O.Box 2713DohaQatar National Institute for Research in Rural Engineering Water and ForestryP.O.Box 10Ariana2080Tunisia National Institute of Agronomy 43 Av.Charles NicolleTunis1082Tunisia College of Agriculture at Mograne University of Carthage1121MograneTunisia

Agricultural soils in semi-arid regions have frequently been degraded due to adverse climatic conditions,organic matter depletion,and poor farming *** enhance soil quality,this study examines the reuse of sewage sludge(SS)as an available source of organic matter in a typical Mediterranean sandy-loam ***,we studied the cumulative effect of two annual applications of 40,80 and 120 tons of sludge per ha on soil quality in absence of *** dose-dependent improvement of organic matter content was the most significant event that reflected sludge application rates,and consequently influenced other soil ***,soil structural stability increased by 13.3%,28.8%and 59.4%for treatments SS-40,SS-80 and SS-120 respectively as compared to unamended *** stability improvement was also confirmed by the dose-dependent variation of other edaphic factors including calcium content,the microbial quotient as well as Welt and C:N *** param-eters are involved in cementing soil aggregates by cation bridging,the formation of microbial mucilage,and clay-humic *** magnetic susceptibility(SMS)was measured in situ as a possible rapid tool to evaluate soil *** showed significant correlation with sludge dose and stability amelioration testifying to the aggregation role that can play Al2O3 and particularly Fe2O3 minerals added by the hematite-rich ***,analytical results and field observations revealed no trends of soil salinization or acidification by excessive sludge *** avoiding the rhizosphere effect,outcomes could reflect the resilience and intrinsic capacity of the soil to cope with excessive sludge loads.

关键词： Sandy loam soil Urban sewage sludge Structural stability Soil degradation Aggregation Magnetic susceptibility

Effect of sintering temperature on microstructure and electrical properties of Sr_(1-x)(Na_(0.5)Bi_(0.5))_(x)Bi_(2)Nb_(2)O_(9) solid solutions

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Journal of Advanced Ceramics 2014年第1期3卷 17-30页

作者： Hana naceur Adel MEGRICHE mohamed EL MAAOUI Laboratory of Applied Mineral Chemistry Department of ChemistryFaculty of SciencesUniversity Tunis ElManarCampus 2092TunisTunisia

In this study,we investigated the effect of sintering temperature on densification,grain size,conductivity and dielectric properties of Sr_(1-x)(Na_(0.5)Bi_(0.5))_(x)Bi_(2)Nb_(2)O_(9) ceramics,prepared by hydrothermal *** were sintered at different *** increased with sintering temperature,reaching up to 96%at 800℃.A grain growth was observed with increasing sintering *** spectroscopy analyses of the sintered samples at various temperatures were *** in dielectric constant and in Curie temperature with sintering was *** conductivity and activation energy were calculated and attributed to the microstructural factors.

关键词： ceramics sintering light scattering dielectric properties

Resilient Control for Networked Control Systems Subject to Cyber/Physical Attacks

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International Journal of Automation and computing 2018年第3期15卷 345-354页

作者： Taouba Rhouma Karim Chabir mohamed naceur Abdelkrim Modeling Analysis and Control of Systems(MACS) Laboratory National Engineering School of Gabes (ENIG)University of Gabes

In this paper, we investigate a resilient control strategy for networked control systems（NCSs） subject to zero dynamic attacks which are stealthy false-data injection attacks that are designed so that they cannot be detected based on control input and measurement data. Cyber resilience represents the ability of systems or network architectures to continue providing their intended behavior during attack and recovery. When a cyber attack on the control signal of a networked control system is computed to remain undetectable from passive model-based fault detection and isolation schemes, we show that the consequence of a zero dynamic attack on the state variable of the plant is undetectable during attack but it becomes apparent after the end of the attack. A resilient linear quadratic Gaussian controller, having the ability to quickly recover the nominal behavior of the closed-loop system after the attack end, is designed by updating online the Kalman filter from information given by an active version of the generalized likelihood ratio detector.

关键词： Networked control systems (NCSs) cyber physical attacks Kahnan filtering resilient control anomaly detector.

Adaptive Fault Tolerant Control of Multi-time-scale Singularly Perturbed Systems

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International Journal of Automation and computing 2018年第6期15卷 736-746页

作者： Adel Tellili Nouceyba Abdelkrim Amina Challouf mohamed naceur Abdelkrim Research Unit MACS University of Gabes Gabes Tunisia Higher Institute of Industrial Systems at Gabes University of Gabes Gabes Tunisia Higher Institute of Technological Studies at Djerba Djerba Tunisia National School of Engineers of Gabes University of Gabes Gabes Tunisia

This paper studies the fault tolerant control, adaptive approach, for linear time-invariant two-time-scale and three-time-scale singularly perturbed systems in presence of actuator faults and external disturbances. First, the full order system will be controlled using v-dependent control law. The corresponding Lyapunov equation is ill-conditioned due to the presence of slow and fast phenomena. Secondly, a time-scale decomposition of the Lyapunov equation is carried out using singular perturbation method to avoid the numerical stiffness. A composite control law based on local controllers of the slow and fast subsystems is also used to make the control law ε-independent. The designed fault tolerant control guarantees the robust stability of the global closed-loop singularly perturbed system despite loss of effectiveness of actuators. The stability is proved based on the Lyapunov stability theory in the case where the singular perturbation parameter is sufficiently small. A numerical example is provided to illustrate the proposed method.

关键词： Singularly perturbed systems time scale decomposition adaptive fault tolerant control actuator fault Lyapunov equations

New Biobased Polyurethane Materials from Modified Vegetable Oil

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Journal of Renewable Materials 2021年第7期9卷 1213-1223页

作者： Chakib Mokhtari Fouad Malek Sami Halila mohamed naceur Belgacem Ramzi Khiari Laboratoire de Chimie Appliquée et Environnement–ECOMP—Facultédes Sciences UniversitéMohamed PremierOujda60000Maroc University of Grenoble Alpes CNRSCERMAVGrenobleCedex 9France University of Grenoble Alpes CNRSGrenoble INPGrenobleF-38000France University of Monastir Faculty of Sciences of MonastirResearch Unit of Applied Chemistry and EnvironmentMonastir5019Tunisia Higher Institute of Technological Studies(ISET)of Ksar-Hellal Ksar-Hellal5070Tunisia

Bio-based polyurethanes(PUs)have been occurred a large attention *** was found to be an alternative to the petrochemical based materials to the fact of their weak environmental influence,availability,good price and *** addition,the nature shows several bio-derived compounds as raw materials for the synthesis of polyols,including the vegetable oils,polyphenol,terpene,and other bio-renewable *** the aim to develop a new family of biobased polyurethanes(PUs)via vegetable oils,the elaboration of new Jojoba-based PUs was performed by catalyst-free polycondensation reaction of a synthesized Jojoba diol with various diisocyanates such us toluene diisocyanate(TDI)and isophorone diisocyanate(IPDI).All the compounds were characterized by FTIR and NMR spectroscopies,and their properties were determined by gel permeation chromatography,differential scanning calorimetry and thermogravimetric *** obtained results show renewable vegetable oils-based PUs materials can be preparing using a new environmentally ways and giving various good properties performances.

关键词： Biopolymers Jojoba oil polyurethane polyol thiol-ene

Robust ACO-Based Landmark Matching and Maxillofacial Anomalies Classification

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Intelligent Automation & Soft Computing 2023年第2期35卷 2219-2236页

作者： Dalel Ben Ismail Hela Elmannai Souham Meshoul mohamed Saber naceur LTSIRS LR20ES06 Institut National des Sciences Appliquées et de Technologie INSATUniversitéde CarthageTunisia Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia

Imagery assessment is an efﬁcient method for detecting craniofacial anomalies.A cephalometric landmark matching approach may help in orthodontic diagnosis,craniofacial growth assessment and treatment *** landmark matching and anomalies detection helps face the manual labelling lim-itations and optimize preoperative planning of maxillofacial *** aim of this study was to develop an accurate Cephalometric Landmark Matching method as well as an automatic system for anatomical anomalies classiﬁ***,the Active Appearance Model(AAM)was used for the matching *** pro-cess was achieved by the Ant Colony Optimization(ACO)algorithm enriched with proximity ***,the maxillofacial anomalies were classiﬁed using the Support Vector Machine(SVM).The experiments were conducted on X-ray cephalograms of 400 patients where the ground truth was produced by two *** frameworks achieved a landmark matching error(LE)of 0.50±1.04 and a successful landmark matching of 89.47%in the 2 mm and 3 mm range and of 100%in the 4 mm *** classiﬁcation of anomalies achieved an accuracy of 98.75%.Compared to previous work,the proposed approach is simpler and has a comparable range of acceptable matching cost and anomaly classiﬁ*** have also shown that it outperformed the K-nearest neigh-bors(KNN)classiﬁer.

关键词： Maxillofacial anomalies cephalometric landmarks similarity chi-square distance quadratic assignment problem ant colony optimization SVM

Pulp and Paper from Sugarcane:Properties of Rind and Core Fractions

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Journal of Renewable Materials 2018年第2期6卷 160-168页

作者： Lísias Pereira Novo Julien Bras mohamed naceur Belgacem Antonio Aprigio da Silva Curvelo Department of Materials Engineering Sao Carlos School of EngineeringUniversity of Sao PauloAv.Joao Dagnone 110013563-120Sao CarlosSao PauloBrazil Department of Physical Chemistry Sao Carlos Institute of ChemistryUniversity of Sao PauloAv.Trabalhador Sao Carlense 40013560-970Sao CarlosSao PauloBrazil Grenoble Alpes University LGP2F-38000 GrenobleFrance CNRS LGP2F-38000 GrenobleFrance

Two distinct lignocellulosic fractions(rind and core)can be obtained through a physical separation of sugarcane *** presenting differences in morphology,both fractions can be employed to produce pulps and *** pulps and paper sheets produced from the core and rind fractions were characterized by their chemical composition,physical properties and mechanical *** pulps obtained from the core presented a higher amount of fines,lower drainage ability and rendered denser and stiffer *** pulps from the rind,which have a higher content of fibers and higher degree of polymerization,produced sheets with higher air permeability and water *** paper sheets presented mechanical and physical properties comparable to commercial papers and papers from different cellulosic *** different properties exhibited by the papers produced from each fraction allow their use for distinct purposes,and expands the opportunities in the context of sugarcane biorefinery.

关键词： Sugarcane core and rind fractions papermaking pulp and paper

Spontaneous and simultaneous complete bilateral rupture of the quadriceps tendon in a patient receiving hemodialysis: A case report and literature review

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World Journal of Orthopedics 2018年第9期9卷 180-184页

作者： Wassim Zribi mohamed Zribi Ahmed Racem Guidara mohamed Ben Jemaa Ameur Abid Nabil Krid Abdessalem naceur Hassib Keskes Department of Orthopaedic Surgery and Traumatology Habib Bourguiba University Hospital Department of Orthopaedic Surgery and Traumatology Marechal Leclerc Argentan Hospital

The spontaneous and simultaneous rupture of both quadriceps tendons is uncommon and has rarely been reported in the literature. The current case involves a 43-year-old man with end-stage renal disease requiring hemodialysis for the past 20 years. The patient experienced bilateral knee pain and swelling and was unable to bear weight. Physical examination revealed bilateral quadriceps tendon defect above the patella and loss of active extension. Although plain radiographs of both knees showed no fracture or widening of the joint space, an inferiorly positioned patella was observed. Ultrasonography of the knees revealed a quadriceps tendon defect at the upper edge of each patella, while MR imaging revealed a tear in each quadriceps tendon from the superior poles of the patella. The patient then underwent surgical correction wherein the tendons were repaired using sutures passed through drill holes in the patella. The knees were immobilized with splints for 4 wk before starting physiotherapy. The patient subsequently regained full functional activity within 1 year.

关键词： Quadriceps tendon Tear Krackow sutures Renal failure Hyperparathyroidism

Additive Fault Tolerant Control Applied to Delayed Singularly Perturbed System

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Journal of Software Engineering and Applications 2012年第4期5卷 217-224页

作者： Nouceyba Abdelkrim Adel Tellili mohamed naceur Abdelkrim Research Unit Modeling Analysis and Control Systems (MACS) Gabes Tunisia

The additive fault tolerant control (FTC) for delayed system is studied in this work. To design the additive control, two steps are necessary;the first one is the estimation of the sensor fault amplitude using a Luenberger observer with delay, and the second one consists to generate the additive fault tolerant control law and to add it to the nominal control of delayed system. The additive control law must be in function of fault term, then, in the absence of fault the expression of additive control equal to zero. The generation of nominal control law consist to determinate the state feedback gain by using the Lambert W method. Around all these control tools, we propose an extension of the additive FTC to delayed singularly perturbed systems (SPS). So, this extension consists to decompose the delayed SPS in two parts: delayed slow subsystem (delayed SS) and fast subsystem (FS) without time delay. Next, we consider that the delayed SPS is affected at its steady-state, and we apply the principal of FTC to the delayed SS and finally we combine them with the feedback gain control of FS by using the principal of composite control.

关键词： Additive Fault Tolerant Control Composite Control Lambert W Function Order Reduction Sensor Fault Singularly Perturbed System