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Weinstein–Sobolev Spaces of Exponential Type and Applications

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Acta Mathematica Sinica,English Series 2013年第3期29卷 591-608页

作者： hassen BEN mohamed Belgacem GHRIBI Department of Mathematics Faculty of Sciences of Gabs

In this paper, we introduce and study the Sobolev spaces of exponential type associated with the Weinstein operator, via some elements of harmonic analysis related to this operator. In particular, some properties, including completeness and imbedding theorem, are proved. Finally, using the theory of reproducing kernels, some applications are given for these spaces.

关键词： Weinstein operator Weinstein transform distribution Sobolev spaces

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An Efficient AES 32-Bit Architecture Resistant to Fault Attacks

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Computers, Materials & Continua 2022年第2期70卷 3667-3683页

作者： hassen Mestiri Imen Barraj Abdullah Alsir mohamed Mohsen Machhout Department of Computer Engineering College of Computer Engineering and SciencesPrince Sattam bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia Higher Institute of Applied Sciences and Technology of Sousse University of SousseTunisia Electronics and Micro-Electronics Laboratory Faculty of Sciences of MonastirUniversity of MonastirTunisia METS Research Group Electrical Engineering DepartmentNational Engineers School of SfaxUniversity of SfaxTunisia Higher Institute of Computer Science and Multimedia of Gabes University of GabesTunisia

The Advanced Encryption Standard cryptographic algorithm,named AES,is implemented in cryptographic circuits to ensure high security level to any system which required confidentiality and secure information *** of the most effective physical attacks against the hardware implementation of AES is fault attacks which can extract secret *** now,a several AES fault detection schemes against fault injection attacks have been *** this paper,so as to ensure a high level of security against fault injection attacks,a new efficient fault detection scheme based on the AES architecture modification has been *** this reason,the AES 32-bit round is divided into two half rounds and input and pipeline registers are implemented between *** proposed scheme is independent of the procedure the AES is ***,it can be implemented to secure the pipeline and iterative *** evaluate the robustness of the proposed fault detection scheme against fault injection attacks,we conduct a transient and permanent fault attacks and then we determine the fault detection capability;it is about 99.88585%and 99.9069%for transient and permanent faults *** have modeled the AES fault detection scheme using VHDL hardware language and through hardware FPGA *** FPGA results demonstrate that our scheme can efficiently protect the AES hardware implementation against fault *** can be simply implemented with low *** addition,the FPGA implementation performances prove the low area overhead and the high efficiency and working frequency for the proposed AES detection scheme.

关键词： Security cryptographic circuits AES hardware implementation fault detection fault attacks

New Sobolev-Weinstein Spaces and Applications

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Journal of Mathematical Research with Applications 2022年第3期42卷 247-260页

作者： hassen BEN mohamed Youssef BETTAIBI Department of Mathematics Faculty of Sciences Gabes University

In this paper, we consider the generalized Weinstein operator■ we introduce new Sobolev-Weinstein spaces denoted ■associated with the generalized Weinstein operator and we investigate their properties. Next, as appl... 详细信息

关键词： generalized Weinstein operator generalized Weinstein transform sobolev spaces extremal functions reproducing kernels

Relationship between gravitational flap structures in the backlimb of anticlinal breakthrough Fault-Propagation Folds:case study of the Southern-Central Tunisian Atlas

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Journal of Mountain Science 2023年第12期20卷 3525-3541页

作者： Soulef AMAMRIA hassen BENSALEM Hassan TAIB mohamed Sadok BENSALEM Riheb HADJI Younes HAMED Faculty of Sciences Gabès Erriadh City Gabès University of GabèsErriadh city 6072Tunisia Higher Institute of Water Sciences and Techniques of Gabès University of GabèsErriadh city 6072Tunisia Faculty of Earth Sciences and Architecture Larbi Ben M’hidi UniversityOum El Bouaghi 4000Algeria Institute of Architecture and Earth Sciences Setif 1UniversitySetif city 19000Algeria Faculty of Sciences of Gafsa University of GafsaSidi Ahmed zarroug 2100Tunisia

The development of orogenic belts structures in the Southern-Central Tunisian Atlas is influenced by the evolution of tectonic activities during different phases,which are also closely linked to the formation of gravitational collapse *** typical example is that of the northern flank of the Jebel Orbata particularly the Ben Zannouch *** is an asymmetrical anticline interpreted by the model of“Fault Propagation Folds”.The development of the Ben Zannouch structures is resulted from landslides,scree falls and inverted layers plunging to the *** direction of resulted gravitational structure is parallel to the main thrust direction of the Bou Omrane *** thrust activity of Bou Omrane fault is associated to the important paleo-slope facing south and plastic lithology(incompetent marl layers)of outcropped series,facilitates the development of the Ben Zannouch Flap *** definition of gravitational collapse structures for the first time in Tunisia particularly in the northern flank of the Jebel Orbata is controlled by many principal structural conditions:fragmentation of the landslide surfaces,rheology and *** regional factors can be distinguished in the Southern-Central Tunisian Atlas as the seismic activity of the pre-existing Gafsa fault reactivated during compressive phases and the weather conditions during the postglacial period.

关键词： Southern-Central Tunisian Atlas Gravitational collapses structures Paleo-slope Gafsa fault

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Role of sirtuins in ischemia-reperfusion injury

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World Journal of Gastroenterology 2013年第43期19卷 7594-7602页

作者： Eirini Pantazi mohamed Amine Zaouali mohamed Bejaoui Emma Folch-Puy hassen Ben Abdennebi Joan Roselló-Catafau Experimental Hepatic Ischemia-Reperfusion Unit Institut of Biomedical Research of Barcelona-Spanish National Research CouncilBarcelona08036 CataloniaSpain Molecular Biology and Anthropology applied to development and health (UR12ES11) Faculty of PharmacyMonastir 5000Tunisia Experimental Pathology Department Institute of Biomedical Research of Barcelona-Spanish National Research CouncilBarcelona08036 CataloniaSpain

Ischemia-reperfusion injury(IRI)remains an unresolved and complicated situation in clinical practice,especially in the case of organ *** factors contribute to its complexity;the depletion of energy during ischemia and the induction of oxidative stress during reperfusion initiate a cascade of pathways that lead to cell death and finally to severe organ ***,the sirtuin family of nicotinamide adenine dinucleotide-dependent deacetylases has gained increasing attention from researchers,due to their involvement in the modulation of a wide variety of cellular *** are seven mammalian sirtuins and,among them,the nuclear/cytoplasmic sirtuin 1(SIRT1)and the mitochondrial sirtuin 3(SIRT3)are ubiquitously expressed in many tissue *** are known to play major roles in protecting against cellular stress and in controlling metabolic pathways,which are key processes during *** this review,we mainly focus on SIRT1 and SIRT3 and examine their role in modulating pathways against energy depletion during ischemia and their involvement in oxidative stress,apoptosis,microcirculatory stress and inflammation during *** present evidence of the beneficial effects of sirtuins against IRI and emphasize the importance of developing new strategies by enhancing their action.

关键词： Sirtuin 1 Sirtuin 3 Ischemia-reperfusion injury oxidative stress Apoptosis

Effect of Absorption of Patch Antenna Signals on Increasing the Head Temperature

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Computer Modeling in Engineering & Sciences 2020年第8期124卷 683-701页

作者： mohamed Abbas Ali Algahtani Amir Kessentini hassen Loukil Muneer Parayangat Thafasal Ijyas Abdul Wase Mohammed Electrical Engineering Department College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia Department of Mechanical Engineering College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia Department of Computers and Communications College of EngineeringDelta University for Science and TechnologyGamasa35712Egypt Laboratory of Electromechanical Systems(LASEM) National Engineering School of SfaxUniversity of SfaxSfax3038Tunisia Electronics and Information Technology Laboratory University of SfaxNational Engineering School of SfaxSfax3038Tunisia Research Center for Advanced Materials Science King Khalid UniversityAbha61413Saudi Arabia Nabeul’s Foundation Institute for Engineering Studies University of CarthageIPEINNabeul8000Tunisia

Every new generation of antennas is characterized by increased accuracy and faster transmission ***,patch antennas have been known to damage human *** type of antenna sends out electromagnetic waves that increase the temperature of the human head and prevent nerve strands from functioning *** paper examines the effect of the communication between the patch antenna and the brain on the head’s temperature by developing a hypothetical multi-input model that achieves more accurate *** inputs are an individual’s blood and tissue,and the emission power of the *** forces depend on the permeability and conductivity characteristics of the metal from which the antenna is *** proposed model is the first one that links the material the antenna is manufactured from and the head’s *** results show that there are only a small number of materials that should be used as antenna *** materials are in the form of thin *** using these thin films at different temperatures,the risk to the head can be *** paper finds that the best results were obtained when the patch antenna was made of one of the following materials operating at a specific temperature:traditional materials at 305°K;casting cast steel at around 295°K;bismuth telluride(Bi2Te3)at 290°K;or barium sodium niobate at 310°K.

关键词： Brain patch antenna head overheating waves behavior materials properties

How to protect liver graft with nitric oxide

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World Journal of Gastroenterology 2011年第24期17卷 2879-2889页

作者： hassen Ben Abdennebi mohamed Amine Zaoualí Izabel Alfany-Fernandez Donia Tabka Joan Roselló-Catafau Laboratory of Human Physiology Faculty of PharmacyUniversity of Monastir Unit of Experimental Hepatic IschemiaReperfusion Institut of d'Investigacions Biomèdiques de BarcelonaConsejo Superior de Investigaciones Científicas Unitat de Transplantament de Fetge i Viabilitat de l'Empelt Institut d'Investigacions Biomèdiques August Pi i Sunyer

Organ preservation and ischemia reperfusion injury associated with liver transplantation play an important role in the induction of graft injury. One of the earliest events associated with the reperfusion injury is endothelial cell dysfunction. It is generally accepted that endothelial nitric oxide synthase （e-NOS） is cell-pro- tective by mediating vasodilatation, whereas inducible nitric oxide synthase mediates liver graft injury after transplantation. We conducted a critical review of the literature evaluating the potential applications of regulating and promoting e-NOS activity in liver preservation and transplantation, showing the most current evidence to support the concept that enhanced bioavailability of NO derived from e-NOS is detrimental to ameliorate graft liver preservation, as well as preventing subse- quent graft reperfusion injury. This review deals mainly with the beneficial effects of promoting ＂endogenous＂ pathways for NO generation, via e-NOS inducer drugs in cold preservation solution, surgical strategies such as ischemic preconditioning, and alternative ＂exogenous＂ pathways that focus on the enrichment of cold storage liquid with NO donors. Finally, we also provide a basic bench-to-bed side summary of the liver physiology and cell signalling mechanisms that account for explaining the e-NOS protective effects in liver preservation and transplantation.

关键词： Cold ischemia reperfusion injury Endotheli-al nitric oxide synthase Nitric oxide Liver graft preser-vation Ischemic preconditioning Liver transplantation

Correlation between welding and hardening parameters of friction stir welded joints of 2017 aluminum alloy

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Transactions of Nonferrous Metals Society of China 2012年第5期22卷 1064-1072页

作者： hassen BOUZAIENE mohamed-Ali REZGUI Mahfoudh AYADI Ali ZGHAL Research Unit in Solid Mechanics Structures and Technological Development(99-UR11-46)Higher School of Sciences and Techniques of TunisTunisia

An experimental study was undertaken to express the hardening Swift law according to friction stir welding （FSW） aluminum alloy 2017. Tensile tests of welded joints were run in accordance with face centered composite design. Two types of identified models based on least square method and response surface method were used to assess the contribution of FSW independent factors on the hardening parameters. These models were introduced into finite-element code ＂Abaqus＂ to simulate tensile tests of welded joints. The relative average deviation criterion, between the experimental data and the numerical simulations of tension-elongation of tensile tests, shows good agreement between the experimental results and the predicted hardening models. These results can be used to perform multi-criteria optimization for carrying out specific welds or conducting numerical simulation of plastic deformation of forming process of FSW parts such as hydroforming, bending and forging.

关键词： friction stir welding response surface methodology face centered central composite design hardening simulation relative average deviation criterion

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Effects of Institut Georges Lopez-1 and Celsior preservation solutions on liver graft injury

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World Journal of Gastroenterology 2015年第14期21卷 4159-4168页

作者： Donia Tabka mohamed Bejaoui James Javellaud Joan Roselló-Catafau Jean-Michel Achard hassen Ben Abdennebi Unité de recherche "Biologie et anthropologie moléculaire appliquées au développe- mentetàla santé" (UR12ES11) University of MonastirFaculty of Pharmacy Experimental Hepatic Ischemia--Reperfusion Unit Institut d’Investigacions Biomèdiques de Barcelona--Consejo Superior de Investigaciones Cientificas INSERM Unité Mixte de Recherche S-8508000 LimogesFrance

AIM: To compare Institut Georges Lopez(IGL-1) and Celsior preservation solutions for hepatic endothelium relaxation and liver cold ischemia reperfusion injury(IRI).METHODS: Two experimental models were *** the first one, acetylcholine-induced endotheliumdependent relaxation(EDR) was measured in isolated ring preparations of rat hepatic arteries preserved or not in IGL-1 or Celsior solutions(24 h at 4 ℃).To determine nitric oxide(NO) and cyclooxygenase EDR, hepatic arteries were incubated with L-NG-nitroarginine methyl ester(L-NAME), an inhibitor of endothelium nitric oxide synthase(e NOS), or with L-NAME plus indomethacin, an inhibitor of *** the second experiment, rat livers were cold-stored in IGL-1 or Celsior solutions for 24 h at 4 ℃ and then perfused "ex vivo " for 2 h at 37 ℃.Liver injury was assessed by transaminase measurements, liver function by bile production and bromosulfophthalein clearance, oxidative stress by malondialdehyde levels and catalase activity and alterations in cell signaling pathways by pA kt, pA MPK, eN OS and MAPKs proteins ***: After cold storage for 24 h with either Celsior or IGL-1, EDR was only slightly *** isolated arteries, EDR was exclusively mediated by ***, cold-stored arteries showed NOand COX-dependent *** decrease in NO-dependent relaxation after cold storage was significantly more marked with *** second study indicated that IGL-1 solution obtained better liver preservation and protection against IRI than *** injury was reduced, function was improved and there was less oxidative ***-1 solution activated Akt and AMPK, which was concomitant with increased eN OS expression and nitrite/nitrate ***, MAPKs kinases were regulated in livers preserved with IGL-1 solution since reductions in p-p38, p-ERK and p-JNK protein levels were ***: IGL-1 solution preserved NO-dependent relaxation better than Celsior storage solutio

关键词： Organ preservation solutions Institut Georges Lope