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Effects of Barium Stress in Brassica juncea and Cakile maritima:The Indicator Role of Some Antioxidant Enzymes and Secondary Metabolites

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Phyton-International Journal of Experimental Botany 2021年第1期90卷 145-158页

作者： houda Bouslimi Renata Ferreira Nesrine Dridi Pedro Brito Susete Martins-Dias Isabel Caçador Noomene Sleimi Laboratory of Resources Materials and EcosystemsFaculty of Sciences of BizerteUniversity of CarthageJarzounaBizerte7021Tunisia Centro de Recursos Naturais e Ambiente Instituto Superior TécnicoUniversidade de LisboaLisbon1049-001Portugal Instituto Português do Mare da Atmosfera Rua Dr.Alfredo Magalhães RamalhoLisbon1495-006Portugal Centro de Recursos Naturais e Ambiente DBEInstituto Superior TécnicoUniversidade de LisboaLisbon1049-001Portugal Marine and Environmental Sciences Centre Faculdade de CiênciasUniversidade de LisboaCampo GrandeLisbon1749-016Portugal

Soil contamination by toxic trace metal elements,like barium(Ba),may stimulate various undesirable changes in the metabolic activity of *** plant responses are fast and with,direct or indirect,generation of reactive oxygen species(ROS).To cope with the stress imposed by the ROS production,plants developed a dual cellular system composed of enzymatic and non-enzymatic players that convert ROS,and their by-products,into stable nontoxic *** assess the Ba stress response of two Brassicaceae species(Brassica juncea,a glycophyte,and Cakile maritime,a halophyte),plants were exposure to different Ba concentrations(0,100,200,300 and 500µM).The plants response was evaluated through their morphology and development,the determination of plant leaves antioxidant enzymatic activities and by the production of plants secondary *** indicated that the two Brassicaceae species have the ability to survive in an environment containing Ba(even at 500µM).The biomass production of *** was slightly affected whereas an increase in biomass *** was *** stress imposed by Ba activated the antioxidant defense system in the two species,noticed by the changes in the leaves activity of catalase(CAT),ascorbate peroxidase(APX)and guaicol peroxidase(GPX),and of the secondary metabolites,through the production of total phenols and *** enzymatic response was not similar within the two plant species:CAT and APX seem to have a more important role against the oxidative stress in *** while in *** is ***,total phenols and flavonoids production was more significant in the plants aerial part than in the roots,of the both *** the two Brassicaceae species response was different,in both plants catalytic and non-catalytic transformation of ROS occurs,and both were able to overcome the Ba toxicity and prevent the cell damage.

关键词： Brassica juncea Cakile maritima antioxidant enzymes barium stress oxidative stress secondary metabolites

Prevalence of type 2 diabetes in Algerian patients with hepatitis C virus infection

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World Journal of Gastroenterology 2010年第27期16卷 3427-3431页

作者： Samir Rouabhia Rachid Malek Hocine Bounecer Aoulia Dekaken Fouzia Bendali amor Mourad Sadelaoud Abderrahmene Benouar Department of Internal Medicine University Hospital Center Touhami Benflis Department of Internal Medicine University Hospital Center Saadna Abdenour Department of Epidemiology and Preventive Medicine University Hospital Center Touhami Benflis Department of Pathology University Hospital Center Touhami Benflis Sadelaoud Laboratory of Medical Biology La verdureBatna 05000Algeria Department of Radiology University Hospital Center Touhami Benflis

AIM:To investigate the prevalence of,and risk factors for,diabetes mellitus(DM) in Algerian patients with chronic hepatitis C virus(HCV) infection and in a control ***:A cross-sectional study was undertaken.A total of 416 consecutive patients with viral chronic hepatitis attending the Internal Medicine Department of the University Hospital Center Touhami Benflis in Batna [290 HCV-infected and 126 hepatitis B virus(HBV)-infected patients] were prospectively ***:The prevalence of DM was higher in HCV-infected patients in comparison with HBV-infected patients(39.1% vs 5%,P < 0.0001).Among patients without cirrhosis,diabetes was more prevalent in HCV-infected patients than in HBV-infected patients(33.5% vs 4.3%,P < 0.0001).Among patients with cirrhosis,diabetes was more prevalent in HCV-infected patients,but the difference was not significant(67.4% vs 20%,P = 0.058).The logistic regression analysis showed that HCV infection [odds ratio(OR) 4.73,95% CI:1.7-13.2],metabolic syndrome(OR 12.35,95% CI:6.18-24.67),family history of diabetes(OR 3.2,95% CI:1.67-6.13) and increased hepatic enzymes(OR 2.22,95% CI:1.1-4.5) were independently related to DM in these ***:The high prevalence of diabetes in HCV-infected patients,and its occurrence at early stages of hepatic disease,suggest that screening for glucose abnormalities should be indicated in these patients.

关键词： Prevalence Hepatitis C virus Hepatitis B virus Diabetes mellitus Algeria

Micro Gas Turbine Range Extender Performance Analysis Using Varying Intake Temperature

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Automotive Innovation 2020年第4期3卷 356-365页

作者： Raja Mazuir Raja Ahsan Shah Mansour Al Qubeissi Andrew McGordon Mark amor‑Segan Paul Jennings Faculty of Engineering Environment and ComputingCoventry UniversityCoventry CV12JHUK Warwick Manufacturing Group University of WarwickCoventry CV47ALUK

A micro gas turbine(MGT)can potentially be an alternative power source to the conventional internal combustion engine as a range extender in hybrid electric *** integration of the MGT into a hybrid vehicle needs a new approach for technical validation requirements compared to the testing of an internal combustion *** attributes of the MGT are predicted to cause concerns for vehicle sub-system requirements such as high ambient temperature and start-stop *** paper describes the results from specially developed experimental techniques for testing the MGT in a typical automo-tive environment.A black box MGT was used in this study for performance investigation during hot and cold *** MGT was instrumented and fitted with automotive standard components to replicate typical vehicle operational *** intake air temperature was varied between 10 and 24°C.A significant reduction in the power output of the MGT was observed as the intake temperature was *** proposed case scenario caused a reduction in nitrogen oxide emis-sions in the range of 0.02−0.04 g/km because of the lower combustion temperature at high intake ***,hydrocarbon and carbon monoxide emissions have not shown a noticeable reduction during the power output *** experimental results have highlighted the potential issues of using the MGT at higher intake temperatures and suggest design change to take the effect of higher engine bay temperature into account.

关键词： Micro gas turbine Hybrid vehicle Range extender Test characterization

Pseudotumoral acute cerebellitis associated with mumps infection in a child

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World Journal of Clinical Cases 2017年第8期5卷 340-343页

作者： houda Ajmi Mehdi Gaha Sameh Mabrouk Saida Hassayoun Noura Zouari Jalel Chemli Saoussen Abroug Pediatrics Depart-ment Sahloul University Hospital Radiology Department Sahloul University Hospital

Pseudotumoral cerebellitis in childhood is an uncommon presentation of cerebellitis mimicking a brain tumor. It often follows an inflammatory or infectious event, particularly due to varicella virus. Patients could have a wide clinical spectrum on presentation. Some patients may be asymptomatic or present at most with mild cerebellar signs, whereas others may suffer severe forms with brainstem involvement and severe intracranial hypertension mimicking tumor warranting surgical intervention. Imaging techniques especially multimodal magnetic resonance imaging represent an interesting tool to differentiate between posterior fossa tumors and acute cerebellitis. We describe a case of pseudotumoral cerebellitis in a 6-year-old girl consequent to mumps infection and review the literature on this rare association.

关键词： Acute cerebellitis Pseudotumoral cerebellitis Posterior fossa tumor Children Mumps

Asymptotic Design and Analysis of Multiuser Detector for UWB High Data Rate Channel Based on Channel Division Multiple Access

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Communications and Network 2013年第3期5卷 681-687页

作者： houda Chihi Ridha Bouallegue Higher School of Communications (Sup’Com) Innov’COM Tunis Tunisia

In this paper, we study an innovative multiple access scheme that exploits the intrinsic properties of the wireless envi- ronment to improve the multiuser environment, so-called Channel Division Multiple Access (ChDMA) focusing on spectral efficiency analysis and system performance. In particular, we show that Simultaneous multiuser accessing to a common destination is made possible by considering the channel impulse response (CIR) of each user as a signature. We begin by the assumption of the channel state information available at the receiver. Then, we analyze the perform- ance of the ChDMA integration in a random environment over UWB high data rate channel. Next, we discuss the de- sign of MMSE and optimal receiver structure for such a system. Additionally, we show an asymptotic analysis behavior taking into account the channel eigenvalues distribution with the associated spectral efficiency.

关键词： ChDMA MBOFDM UWB Spectral Efficiency Eigenvalues Distribution MMSE Optimal Receiver PDP

Effectiveness of plant growth-promoting rhizobacterium Pantoea sp. BRM17 in enhancing canola growth on phosphogypsum-amended soil

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Pedosphere 2020年第4期30卷 570-576页

作者： houda TRIFI Issam BENSALEM Naima KOLSI BENZINA Amine FOURATI Maria Clara COSTA Wafa ACHOUAK Haitham SGHAIER Mouldi SAIDI Laboratory of Biotechnology and Nuclear Technology(LR16CNSTN01) National Center for Nuclear Sciences and Technology(CNSTN)Sidi Thabet Technopark 2020(Tunisia) Faculty of Sciences of Bizerte Carthage UniversityJarzouna 7021(Tunisia) Soil Sciences and Environment Laboratory National Institute of Agronomy of TunisiaTunis Mahrajene 1082(Tunisia) Tunisian Chemical Group Route de Gabes Km 3.5Sfax 3018(Tunisia) Centro de Ciencias do Mar Universidade do AlgarveCampus de GambelasFaro 8005-139(Portugal) Laboratory of Microbial Ecology of the Rhizosphere and Extreme Environment CEA CadaracheSaint Paul Lez Durance 13108(France) Laboratory of Energy and Matter for Development of Nuclear Sciences(LRJ6CNSTN02) National Center for Nuclear Sciences and Technology(CNSTN)Sidi Thabet Technopark 2020(Tunisia) Laboratory of Biotechnology and Bio-Georesources Valorization(LR1IES31) National Center for Nuclear Sciences and Technology(CNSTN)Sidi Thabet Technopark 2020(Tunisia)

Dear Editor,Phosphogypsum(PG)is the main by-product generated during phosphoric acid production from mineral *** contains mainly calcium sulfate dehydrate(CaSO4:2H2O),phosphate,fuoride,heavy metals,and radionuclides(Elloumi et al.,2015).Around 170×10^6 t PG is produced annually worldwide,although PG management is an environ-mental concern in several countries.

关键词： annually soil metals

Magnetic and specific heat studies of the frustrated Er_2Mn_2O_7 compound

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Journal of Rare Earths 2013年第1期31卷 54-59页

作者： N.Ben amor M.Bejar E.Dhahri M.A.Valente P.Lachkar E.K.Hlil Laboratory of Applied Physics Faculty of Sciences of SfaxBP 1171University of Sfax I3N and Physics Department University of Aveiro MCMF Néel InstitutCNRS25 avenue des MartyrsBuilding FBP 16638042 Grenoble cedex 9France MCBT Institut NéelCNRS25 avenue des MartyrsBuilding EBP 16638042 Grenoble cedex 9France

A new ErzMn207 compound was synthesized by the ceramic method and its crystal structure was characterized LJsing powder X-ray diffraction （XRD） and observed by scanning electron microscopy （SEM）. The magnetic properties were investigated using a BS2 magnetometer and the heat capacity was studied using a quantum design （PPMS）. The structural study revealed that this compound was monophasic and crystallized in the monoclinic system with the P2/M space group. Magnetization measurements were carried out in the temperature range of 1.8-200 K under an applied magnetic field of 0.05 T. A crossover from a room temperature para- magnetic phase to an antiferromagnetic one at low temperature was detected from the magnetic study. The magnetic susceptibility, in the paramagnetic region above 40 K, was found to present a simple Curie-Weiss type behavior. From the specific heat （G,） measurements in magnetic fields up to 5 T, we noted the presence of a wide peak characteristic of a second order magneto-structural transition.

关键词： magnetic frustration magnetic phase transition specific heat rare earths

Assessing the impact of artificial recharge on groundwater in an overexploited aquifer: A case study in the Cheria Basin, North-East of Algeria

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Journal of Groundwater Science and Engineering 2023年第3期11卷 263-277页

作者： Mouna Djellali Omar Guefaïfia Chemsedinne Fehdi Adel Djellali amor Hamad Sedimentary Environment Mineral and Water Resources of Eastern Algeria LaboratoryDepartment of Earth sciences and universeLarbi Tebessi University12002 TebessaAlgeria Environmental laboratory Mining instituteLarbi Tebessi University12002 TebessaAlgeria

The Cheria region in Northeastern Algeria has been facing aquifer overexploitation by the agricultural sector and prolonged droughts,resulting in a considerable decline in groundwater *** study investigates the feasibility of implementing artificial recharge techniques to replenish the Eocene aquifer which serves as the primary water source in the Cheria region.A 3D transient numerical model,based on the finite difference method,was used to simulate groundwater flow from 2021 to 2031 using Visual MODFLOW *** the modelling process,three scenarios were considered:(1)including pumping without a recharge,(2)recharge of the entire area through efficient infiltration without pumping,and(3)artificial recharge using river water infiltration basins at two sites,Draa Douamis sinkholes and Eocene limestone *** simulation results showed that aquifer exploitation without recharge caused significant drawdowns,which were 3 m to 7 m in the north-eastern part and 8 m to 12 m in the central and southern *** contrast,the second scenario,involving recharge without pumping,showed a rise in groundwater levels of 2 m to 2.7 m in the north-eastern part and 3 m to 3.62 m in the central and southern *** third scenario,employing artificial recharge,indicated a positive response to artificial recharge,with increased piezometric levels at the proposed sites,signifying a beneficial impact on the *** findings underline the potential of artificial recharge as a promising approach to address the groundwater depletion and environmental issues in the Cheria Basin.

关键词： Eocene limestone Piezometric level Numerical simulation Visual MODFLOW Flex Artificial recharge

Human Endogenous Retrovirus Type W Envelope from Multiple Sclerosis Demyelinating Lesions Shows Unique Solubility and Antigenic Characteristics

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Virologica Sinica 2021年第5期36卷 1006-1026页

作者： Benjamin Charvet Justine Pierquin Joanna Brunel Rianne Gorter Christophe Que´tard Branka Horvat Sandra amor Jacques Portoukalian Herve´Perron GeNeuro Innovation Lyon 69008France CIRI International Center for Infectiology ResearchINSERM U1111CNRS UMR5308University of LyonENS LyonFrance Universite´Claude Bernard Lyon 1 Lyon 69000France Department of Pathology Amsterdam UMCLocation VUMC1007 MB AmsterdamThe Netherlands ProteinSimple Abingdon OX143NBUK Centre for Neuroscience and Trauma Blizard InstituteBarts and London School of Medicine and DentistryQueen Mary University of LondonLondon E12ATUK

In multiple sclerosis(MS),human endogenous retrovirus W family(HERV-W)envelope protein,pHERV-W ENV,limits remyelination and induces microglia-mediated *** better understand its role,we examined the soluble pHERV-W antigen from MS brain lesions detected by specific ***-chemical and antigenic characteristics confirmed differences between pHERV-W ENV and ***-W ENV monomers and trimers remained associated with membranes,while hexamers self-assembled from monomers into a soluble macrostructure involving sulfatides in MS *** hexamers are stabilized by internal hydrophobic bonds and external hydrophilic ***-W studies in MS also suggest that this diffusible antigen may correspond to a previously described highmolecular-weight neurotoxic factor secreted by MS B-cells and thus represents a major agonist in MS *** methods are now needed to identify encoding HERV provirus(es)in affected cells *** properties and origin of MS brain pHERV-W ENV soluble antigen will allow a better understanding of the role of HERVs in MS *** present results anyhow pave the way to an accurate detection of the different forms of pHERV-W ENV antigen with appropriate conditions that remained unseen until now.

关键词： Multiple sclerosis(MS) Brain Antigen HERV-W Envelope Endogenous retrovirus MSRV-ENV Syncytin Demyelination Lipids Glycolipids Sulfatides Oligomer Hexamer