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Geochemistry, mineral paragenesis and geothermal conditions of oreforming fluids from the Ain El Bey Cu–Fe deposit: potential occurrence of native gold and precious metal traces (North African orogenic belt, Northern Tunisia)

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Acta Geochimica 2024年第2期43卷 366-384页

作者： Rania Ben Aissa Wiem Ben Aissa Said Tlig Lassaad Ben Aissa Abdessalem Ben Haj Amara Faculty of Science of Bizerte University of Carthage7021 ZarzounaBizerteTunisia Laboratoire de Recherche Ressources Materiaux et EcosystemesUniversity of Carthage7021 ZarzounaBizerteTunisia department of Geology University Claude Bernard Lyon 169622 VilleurbanneFrance Faculty of Science of Tunis University of Tunis-El ManarRommana1068 TunisTunisia

The Ain El Bey abandoned mine, in North-West Tunisia, fits into the geodynamic context of the European and African plate boundary. Ore deposit corresponds to veins and breccia of multiphase Cu–Fe-rich mineralization related to various hydrothermal fluid circulations. Petromineralogical studies indicate a rich mineral paragenesis with a minimum of seven mineralization phases and, at least, six pyrite generations. As is also the case for galena and native silver, native gold is observed for the first time as inclusion in quartz which opens up, thus, new perspectives for prospecting and evaluating the potential for noble metals associated with the mineralization. Scanning Electron Microscope--Energy Dispersive Spectroscopy and Transmission electron microscopy analyses show, in addition, a large incorporation of trace elements, including Ag and Au, in mineral structures such as fahlores(tetrahedrite-tennantite) and chalcopyrite ones. The mineral/mineral associations, used as geothermometers, gave estimated temperatures for the mineralizing fluids varying from 254 to 330 ℃ for phase Ⅲ, from 254 to 350 ℃ for phase Ⅳ, and from 200 to 300 ℃ for phases Ⅴ and Ⅵ. The seventh and last identified mineralization phase, marked by a deposit of native gold, reflects a drop in the mineralizing fluid’s temperature(development of precious metal research and the revaluation of the Cu–Fe ore deposit at the Ain El Bey abandoned mine, as well as at the surrounding areas fitting in the geodynamic framework of the Africa-Europe plate boundary.

关键词： Ore-formingﬂuids Mineral geochemistry Mineral geothermometers Native silver-gold Ain El Bey Ore deposit North Tunisia

Build Bridge for Tunisians to Read Chinese Literature

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China News Release 2024年第4期 19-20页

作者： Samah Mohamed Abdelkader the Higher Institute of Languages of Tunis at the university of carthage the Oriental Knowledge Publishing Company in Tunisia

China boasts a lengthy history and a diversified *** a Sinologist and translator,my relationship with China runs rather *** 1999,after graduating from high school,I officially began learning Chinese with my father’s encouragement and *** the very beginning,I found this language,with unique features and charm,to be completely different from the Western languages I had learned *** my studies progressed,I developed a strong interest in it and experienced a great sense of satisfaction and accomplishment from it.

关键词： translator accomplishment features

Profiles of the Headspace Volatile Organic and Essential Oil Compounds from the Tunisian Cardaria draba (L.) desv. and Its Leaf and Stem Epidermal Micromorphology

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Phyton-International Journal of Experimental Botany 2024年第4期93卷 725-744页

作者： Wissal Saadellaoui Samiha Kahlaoui Kheiria Hcini Abir Haddada Noomene Sleimi Roberta Ascrizzi Guido Flamini Fethia Harzallah-Skhiri Sondes Stambouli-Essassi Laboratory of Biodiversity Biotechnology and Climate Change(LR11-ES09)Faculty of Sciences of TunisUniversity of Tunis El ManarTunis1060Tunisia Laboratory RME-Resources Materials and EcosystemsFaculty of Sciences of BizerteUniversity of CarthageJarzounaBizerte7021Tunisia Dipartimento di Farmacia Universitàdi PisaVia Bonanno 33Pisa56126Italy Laboratory of Bioresources:Integrative Biology and Valorization(LR14-ES06) High Institute of Biotechnology of MonastirUniversity of MonastirMonastir5000Tunisia

In this work, we investigated aroma volatiles emanated by dry roots, stems, leaves, flowers, and fruits of Cardariadraba (L.) desv. growing wild in Tunisia and its aerial part essential oils (EOs) composition. A total of 37 volatileorganic compounds (96.7%–98.9%) were identified;4 esters, 4 alcohols, 7 hydrocarbons, 12 aldehydes, 5 ketones,1 lactone, 1 organosulfur compound, 2 organonitrogen compounds, and 1 acid. The hydrocarbons form the maingroup, representing 49.5%–84.6% of the total detected volatiles. The main constituent was 2,2,4,6,6-pentamethylheptane(44.5%–76.2%) reaching the highest relative percentages. Forty-two compounds were determined in thetwo fractions of EOs, representing 98.8% and 97.2% of the total oil composition, respectively. The principal componentswere hexadecanoic acid (34.6%), 6-methyl-5-hepten-2-one (18.3%), decanal (15.0%), 6,10,14-trimethyl-2-pentadecanone (13.2%), and n-pentacosane (13%). Micromorphological details of the leaf and stem epidermisusing light microscopy revealed polygonal cells with sinuous walls in the adaxial and abaxial leaf surfaces andnearly rectangular and long ones with linear and thick walls for the stem epidermis. The stomata complexes wereanisocytic in the leaf epidermis and mainly anisocytic and rarely paracytic in the stem epidermis. Non-glandulartrichomes were unbranched and long with an acute apex or short with a convex apex. The glandular ones wereidentified for the first time in this species. They were short-stalked with a large secretory head. The highest stomatalindex (17.02%) was recorded in the abaxial leaf surface. The identification of headspace volatiles and essentialoil compounds can be used to characterize this species, and the various epidermis micromorphologicalfeatures are very useful for biosystematics taxonomic studies within Brassicaceae.

关键词： Cardaria draba aroma profile essential oils epidermis trichomes

Epidemiologic investigation of pediatric distal humerus fractures: An American insurance claims database study

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World Journal of Orthopedics 2024年第1期15卷 52-60页

作者： Kyle Jay Klahs Jake E dertinger Grant T Mello Kevin Thapa Alexis B Sandler E'Stephan J Jesus Garcia Nata Parnes department of Orthopaedic Surgery Texas Tech University Health Sciences-El PasoEl PasoTX 79905United States Medical School California Health Sciences University College of Osteopathic MedicineClovisCA 93611United States Undergraduate School Binghampton UniversityVestalNY 13902United States department of Orthopaedic Surgery William Beaumont Army Medical CenterFort BlissTX 79918United States department of Orthopaedic Surgery Carthage Area HospitalCarthageNY 13619United States

BACKGROUND Distal humerus elbow fractures are one of the most common traumatic fractures seen in pediatric patients and present as three main types:Supracondylar(SC),lateral condyle(LC),and medial epicondyle(ME)*** To evaluate the epidemiology of pediatric distal humerus fractures(SC,LC,and ME)from an American insurance claims *** A retrospective review was performed on patients 17 years and younger with the ICD 9 and 10 codes for SC,LC and ME fractures based on the IBM Truven MarketScan®Commercial and IBM Truven MarketScan Medicare Supplemental *** from 2015 to 2020 were queried for treatments,patient age,sex,length of hospitalization,and *** A total of 1133 SC,154 LC,and 124 ME fractures were *** fractures had the highest percentage of operation at 83%,followed by LC(78%)and ME fractures(41%).Male patients were,on average,older than female patients for both SC and ME *** In the insurance claims databases used,SC fractures were the most reported,followed by LC fractures,and finally ME *** was identified to be a factor for how a pediatric distal humerus fractures,with patients with SC and LC fractures being younger than those with ME *** peak age per injury per sex was similar to reported historic central tendencies,despite reported trends for younger physiologic development.

关键词： Supracondylar humerus fracture Lateral condyle fracture Medial epicondyle fracture Pediatric elbow Truven Epidemiology

On thermoelastic diffusion thin plate theory

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Applied Mathematics and Mechanics(English Edition) 2015年第5期36卷 619-632页

作者： M.AOUADI Ecole Nationale d'Ingenieurs de Bizerte University of Carthage

The effect of diffusion on thermoelastic thin plates is investigated. The governing equations for thin thermoelastic diffusion plates under three different laws of heat and diffusion transmission are derived. By the C... 详细信息

关键词： semigroup governing classic implies relaxation divergence bilinear neglected infinite constants

Laeng-Morpurgo-Type Uncertainty Inequalities for the Laguerre Transform

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Journal of Mathematical Research with Applications 2022年第1期42卷 8-14页

作者： Fethi SOLTANI Faculté des Sciences de Tunis Laboratoire d’Analyse Mathématique et Applications LR11ES11Université de Tunis El Manar Ecole Nationale d’Ingénieurs de carthage Université de Carthage

In this work,we prove Clarkson-type and Nash-type inequalities for the Laguerre transform■ on M=[0,∞)×*** combining these inequalities,we show Laeng-Morpurgo-type uncertainty *** establish also a local-type uncertainty inequalities for the Laguerre transform ■,and we deduce a Heisenberg-Pauli-Weyl-type inequality for this transform.

关键词： Laeng-Morpurgo-type inequality local-type inequality Heisenberg-Pauli-Weyl-type inequality

Gravimetric Study of Geological Structures of Teboursouk Area, Northern Tunisia

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International Journal of Geosciences 2012年第4期3卷 675-682页

作者： Amira Ayed-Khaled Taher Zouaghi Mohamed Ghanmi Fouad Zargouni université de carthage université Tunis El Manar

Gravity data associated with surface geology in the Northern Tunisian Atlas offer better understand to the underlying structures in Teboursouk area and to highlight other deep or unknown structures in surface. The gravity study was based on qualitative and quantitative analysis including the construction of the gravity Bouguer anomaly, upward continuations, residual anomaly, and Horizontal gradient maxima maps. The main results display many positive and negative anomalies as the response of geological structures (J. Cheid Triassic structure, Khalled plain, El Aroussa plain). In addition, the horizontal gradient maxima integrated with geological and structural maps let the identification of major directions of gravimetric lineaments in the study area us NE-SW trending features at the boundaries of J. Cheid structure, NW-SE direction that limit Gaafour plain and Tabet Ech Cherif syncline, and N-S trending that bordered El Aroussa basin. Major results allowed the construction of a new structural map of the study zone.

关键词： Gravimetry Bouguer Anomaly Upward Continuations Gradient Structure Northern Tunisia

Bunching and Antibunching in Cavity QED

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Communications in Theoretical Physics 2011年第7期56卷 134-138页

作者： H.Jabri H.Eleuch Dpartement de Physique Facult des Sciences de Tunis Institute for Quantum Studies Texas A & M UniversityCollege Station Texas university of carthage

We study the statistics of the emitted filed from Rydberg atom confined inside a microcavity and interacting with a pump laser in the strong coupling regime. We explore the manifestation of the antibunching in connect... 详细信息

关键词： quantum fluctuations quantum noise photon statistics cavity quantum electrodynamics

Estimate of the Fourier–Bessel Multipliers for the Poly-axially Operator

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Acta Mathematica Sinica,English Series 2020年第7期36卷 797-811页

作者： Belgacem SELMI Chahiba KHELIFI Faculty of Sciences of Bizerte University of CarthageTunisia

We prove the analogue of H?rmander–Mikhlin multiplier theorem for the multidimensional Fourier–Bessel transform associated with the Poly-axially operator.

关键词： operator. Bessel axial