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SCALAR CURVATURE TYPE PROBLEM ON THE THREE DIMENSIONAL BOUNDED DOMAIN

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Acta Mathematica Scientia 2017年第1期37卷 139-173页

作者： Mohamed ben AYED habib FOURTI Faculte des Sciences Universite de SfaxRoute SoukraSfaxTunisie Institut Preparatoire Aux Etudes d'Ingenieurs Universite de SfaxSfaxTunisie

In this paper we prove an existence result for the nonlinear elliptic problem：-△u = Ku5,u 〉 0 in Ω,u = 0 on Ω,where Ω is a smooth bounded domain of R3 and K is a positive function in Ω.Our method relies on stud... 详细信息

关键词： scalar-curvature critical point limiting Sobolev exponent variational prob-lems with lack of compactness blow up analysis

Epidemiological and histopathological characteristics of thyroid carcinoma in a Tunisian health care center

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第1期10卷 37-42页

作者： Maissa ben Thayer Fatma Khanchel Imen Helal Dorra Chiboub Hedhli Raoueh Ehsen ben Brahim Raja Jouini Aschraf Chadli-Debbiche Faculty of Medicine of Tunis Tunis El Manar UniversityTunisTunisia Depatment of Pathology Habib Thameur's HospitalTunisTunisia Department of Otorhinolaryngology-Head and Neck surgery Habib Thameur's HospitalTunisTunisia

Background:Thyroid carcinoma(TC)accounts for almost 0.5%–1%of total *** incidence is increasing rapidly *** studies have drawn up the epidemiological profile of TC and its clinical and pathological ***,to date,no similar studies have been conducted in ***:To establish an epidemiological profile of TC in a Tunisian health care institute and to analyze its clinical and histopathological characteristics in our *** and Methods:We present a retrospective study reviewing the cases of TC diagnosed in our institution in a 4-year ***:We collected a sample of 192 cases of *** consisted of 31 males and 161 females(83.8%)with a sex-ratio M/F of *** mean age was 46.4 *** thyroid carcinoma was the most frequent histological *** multifocality rate was 33.8%.The mean size of TC was 2.2±1.9 cm.60.9%of TC were staged pT1 and 20.3%had nodal *** thyroid microcarcinomas were noted in 37.5%of ***:Our results were consistent with those of the literature.A high proportion of pT1 and pN0 tumors were noted in our series,suggesting that TC's diagnosis and management was performed at an early stage of the disease in our *** addition,our study enabled us to notice the impact of the Coronavirus disease 19 crisis on the management of TC in our *** studies are needed to establish the epidemiological profile of TC in Tunisia and to assess its clinical and pathological features.

关键词： coronavirus disease 19 epidemiology papillary thyroid carcinoma papillary thyroid microcarcinoma pathology thyroid carcinoma

Cooperative Answering of Fuzzy Queries

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Journal of Computer Science & Technology 2009年第4期24卷 675-686页

作者： Narjes Hachani Mohamed Ali ben Hassine Hanene Chettaoui habib Ounelli Department of Computer Sciences Faculty of Sciences of Tunis University Campus Tunis 1060 Tunisia

The majority of existing information systems deals with crisp data through crisp database systems. Traditional Database Management Systems （DBMS） have not taken into account imprecision so one can say there is some sort of lack of flexibility. The reason is that queries retrieve only elements which precisely match to the given Boolean query. That is, an element belongs to the result if the query is true for this element; otherwise, no answers are returned to the user. The aim of this paper is to present a cooperative approach to handling empty answers of fuzzy conjunctive queries by referring to the Formal Concept Analysis （FCA） theory and fuzzy logic. We present an architecture which combines FCA and databases. The processing of fuzzy queries allows detecting the minimal reasons of empty answers. We also use concept lattice in order to provide the user with the nearest answers in the case of a query failure.

关键词： cooperative system database empty answer formal concept analysis fuzzy query

Metals and metalloid bioconcentrations in the tissues of Typha latifolia grown in the four interconnected ponds of a domestic landfill site

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Journal of Environmental Sciences 2017年第4期29卷 56-68页

作者： Zohra ben Salem Xavier Laffray Ahmed Al-Ashoor habib Ayadi Lotfi Aleya Bourgogne Franche-Comte University Chrono-Environnement Laboratory UMR CNRS 6249 F-25030 Besancon Cedex France Paris Est-Creteil University IPE team iEES Paris UMR 7618 F-94010 Creteil Cedex Prance Thi Qar University IQ-64001 AI Nasiriyah Iraq Sfax University LR/UR/05ES05 Biodiversity and Aquatic Ecosystem BP 1171 CP 3000 Sfax Tunisia

The uptake of metals in roots and their transfer to rhizomes and above-ground plant parts（stems, leaves） of cattails（Typha latifolia L.） were studied in leachates from a domestic landfill site（Etueffont, France） and treated in a natural lagooning system. Plant parts and corresponding water and sediment samples were taken at the inflow and outflow points of the four ponds at the beginning and at the end of the growing season. Concentrations of As, Cd, Cr, Cu, Fe, Mn, Ni and Zn in the different compartments were estimated and their removal efficiency assessed, reaching more than 90% for Fe, Mn and Ni in spring and fall as well in the water compartment. The above-and below-ground cattail biomass varied from 0.21 to 0.85, and 0.34 to 1.24 kg dry weight/m^2, respectively, the highest values being recorded in the fourth pond in spring 2011. The root system was the first site of accumulation before the rhizome, stem and leaves. The highest metal concentration was observed in roots from cattails growing at the inflow of the system＇s first pond. The trend in the average trace element concentrations in the cattail plant organs can generally be expressed as： Fe 〉 Mn 〉 As 〉 Zn 〉 Cr 〉 Cu 〉 Ni 〉 Cd for both spring and fall. While T. latifolia removes trace elements efficiently from landfill leachates, attention should also be paid to the negative effects of these elements on plant growth.

关键词： Landfill leachate Lagooning Trace elements Typha latifolia Phytoremediation

Relationship between high sensitivity C-reactive protein and angiographic severity of coronary artery disease

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Journal of Geriatric Cardiology 2020年第5期17卷 256-263页

作者： Nadia Bouzidi Mejdi ben Messaoud Faouzi Maatouk habib Gamra Salima Ferchichi University of Monastir Faculty of PharmacyClinical and Molecular Biology UnitMonastirTunisia University of Monastir Cardiology A Department Fattouma Bourguiba University HospitalCardiothrombosis Research LaboratoryTunisia University of Monastir Cardiology B Department Fattouma Bourguiba University HospitalCardiothrombosis Research LaboratoryTunisia

Background Coronary artery disease(CAD)remains a leading cause of morbidity and *** play a potential role in atherosclerosis pathogenesis and *** investigated the association between high sensitive C-reactive protein(hs CRP)and severity of *** CAD patients were stratified according to hs CRP cut-off value into high levels hs CRP group(≥8.4 mg/L)and low levels hs CRP group(<8.4 mg/L).Severity of CAD was assessed according to artery stenosis degree and the number of vessel *** analysis was performed using Statistical Package for the Social Sciences(SPSS,version 23.0).Results The mean age was 60.3±11.0 *** level of hs CRP was increased and ranged from 0.2 to 1020.0 mg/*** risk factors and severity of CAD didn’t show significant differences between the two *** multivariate linear analysis,cardiac troponin I(c Tn I)and serum amyloid A(SAA)were predictors of hs *** shown in receiver operating characteristic(ROC)curve analysis performed in patients with ST-segment elevation myocardial infarction(STEMI)and compared to myonecrosis biomarkers,hs CRP(area under the curve(AUC):0.905;95%CI:0.844-0.966;P<0.001)could be a powerful predictor marker in evaluating the infarct size after myocardial infarction but not better than c Tn *** Hs CRP levels were not associated with the severity of CAD but could be useful in the evaluation of myocardial necrosis in patients with STEMI.

关键词： Coronary artery disease High sensitive C-reactive protein Severity

Effects of the hydro-ethanolic extract of Marrubium vulgare in female rats

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Asian Pacific Journal of Tropical Medicine 2017年第2期10卷 154-158页

作者： Rim Aouni Mossadok ben Attia Mohamed habib Jaafoura Amina Bibi-Derbel Mustapha Haouari Faculty of Sciences of Bizerte Department of life Sciences7021 JarzounaUniversity of Carthage INNTA SURVEN Research Laboratory(Monitoring and nutritional epidemiology in Tunisia) Laboratoire Biomonitoring of the Environment Faculty of Sciences of Bizerte.7021 JarzounaUniversity of Carthage Orthopedic InstituteMohamed Kassab Laboratory of Cyto-Morphology and Anatomy Pathologic National Institute of Nutrition and Food technology Clinical laboratory of biochemistry Ecole Superior of Science and Technology of Health of Tunis University of Tunis El Manar

Objective:To evaluate the effects of ethanol–water(80:20) extract of Marrubium vulgare(***) on the hematological parameters,macroscopic and histological aspects of the uterus and fetus in non-pregnant and pregnant ***:Female rats were divided into 4 equal groups(n = 9),group N(normal rats) and group G(pregnant rats) considered as control groups,group NE(normal rats treated with the ethanol–water(80:20,v/v) extract of ***) and group GE(pregnant rats treated with the extract).The ethanol–water(80:20) plant extract was administered in a single daily dose 1 g/kg at the morning,during 19 *** the 19 day of the experiment,animals were sacrificed,the uterus and fetuses were removed for the morphological and histological studies and the blood was collected in EDTA tubes for the measurement of hematological parameters with the use of an automate ‘HORIBA ABX Micros 60 Hematology Analyzer'.Results:Our results showed,in group NE and GE,a significant decrease on hematological parameters:red blood cells(NE:18.6%;GE:38.4%),hematocrit(NE:13.8%;GE:20.4%),hemoglobin(NE:12.1%;GE:8.3%) and mean corpuscular volume(NE:6.4%;GE:2%) with P more less a ***,the extract of *** caused a significant decrease on the mean implantations of fetuses(82.5%,P<0.001) and their size(47.2%,P< 0.01).As for the macroscopic and histological appearance of uterus,our data showed no change in normal treated *** contrast,the treated pregnant rats showed a severe histological change characterized by the existence of location of stopped ***,it was also found in the uterus of these rat lyses placental and embryo ***:All these results support the hypothesis of an abortifacient effect of ***.

关键词： Vegetal extract Abortificiant effect Hematological parameters Fetuses Uterus Histology

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

MACS-annexin V cell sorting of semen samples with high TUNEL values decreases the concentration of cells with abnormal chromosomal content:a pilot study

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Asian Journal of Andrology 2022年第5期24卷 445-450页

作者： Sahar El Fekih Nadia Gueganic Corinne Tous habib ben Ali Mounir Ajina Nathalie Douet-Guilbert Hortense Drapier Damien Beauvillard Frédéric Morel Aurore Perrin University of Brest InsermUMR U1078Faculty of Medicine and Health SciencesBrest 29238France Laboratory of Human Cytogenetics Molecular Genetics and Reproductive BiologyFarhat Hached University HospitalSousse 4031Tunisia Departement of Medical Genetics and Reproductive Biology Brest University Regional HospitalBrest 29609France Department of Reproductive Medicine Farhat Hached Teaching HospitalSousse 4031Tunisia

We question whether,in men with an abnormal rate of sperm DNA fragmentation,the magnetic-activated cell sorting(MACS)could select spermatozoa with lower rates of DNA fragmentation as well as spermatozoa with unbalanced chromosome *** spermatozoa from six males were separated into nonapoptotic and apoptotic *** determined the percentages of spermatozoa with(i)externalization of phosphatidylserine(EPS)by annexin V-Fluorescein isothiocyanate(FITC)labeling,(ii)DNA fragmentation by TdT-mediated-dUTP nick-end labeling(TUNEL),and(iii)numerical abnormalities for chromosomes X,Y,13,18,and 21 by fluorescence in situ hybridization(FISH),on the whole ejaculate and selected spermatozoa in the same *** to the nonapoptotic fraction,the apoptotic fraction statistically showed a higher number of spermatozoa with EPS,with DNA fragmentation,and with numerical chromosomal *** to the whole ejaculate,we found a significant decrease in the percentage of spermatozoa with EPS and decrease tendencies of the DNA fragmentation rate and the sum of disomy levels in the nonapoptotic ***,we observed statistically significant higher rates of these three parameters in the apoptotic *** may help to select spermatozoa with lower rates of DNA fragmentation and unbalanced chromosome content in men with abnormal rates of sperm DNA fragmentation.

关键词： chromosomal abnormalities DNA fragmentation externalization of phosphatidylserine magnetic-activated cell separation spermatozoa

Heavy metal concentrations inLiza aurata(Risso,1810)captured from the Kerkennah Islands(Gulf of Gabes)and associated health risks

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Journal of Coastal Life Medicine 2016年第7期4卷 527-530页

作者： Zohra ben Salem Ayadi habib Biodiversity and Aquatic Ecosystems UR/11ES72 Research Unit Department of Life Sciences ResearchSfax Faculty of SciencesUniversity of SfaxStreet of Soukra Km 3.5 BP 1171-PO Box 3000 SfaxTunisia University of Franche-Comte Chrono-Environnement LaboratoryUMR CNRS 62491Place LeclercF-25030 BesançonFrance

Objective:To determine the concentration of heavy metals(Cd,Cu,Fe,Ni,Pb and Zn)in the liver,gills and muscle of Liza aurata(***)collected from the Kerkennah *** target hazard quotient was also used as an indicator of human health risks associated with fish ***:The sample was collected from Kerkennah Islands(Gulf of Gabes,Tunisia).Heavy metals in *** tissues(gills,liver and muscle)were analysed with an atomic absorption spectrometer(PerkinElmer).Results:As expected,muscle always possessed the lowest concentrations of all *** maximum concentrations of Cd(0.52 mg/kg wet weight),Cu(5.43 mg/kg wet weight),Fe(115.27mg/kg wet weight)and Zn(112.20 mg/kg wet weight)were measured in the liver,while the highest Ni(1.54 mg/kg wet weight)and Pb(1.43 mg/kg wet weight)were recorded in *** target hazard quotient through consumption of fish and calculated by adding the inividual target hazard quotient was below 1,indicating that there was no significant potential health risk associated with consumption of ***:*** from the Kerkennah Islands may be suitable for human consumption.

关键词： Bioaccumulation Health risks Heavy metals Kerkennah Islands Liza aurata