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Surgery in the Acute Phase of Infective Endocarditis: 5 Years after Our Initial Experience

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World Journal of Cardiovascular Diseases 2016年第8期6卷 275-284页

作者： Youssef El Bekkali Noureddine Atmani Siham Bellouize Mohamed Drissi younes moutakiallah Mehdi Bamous Abdessamad Abdou Fouad Nya Anis Seghrouchni Mahdi Aithoussa Brahim Amahzoune Abdedaim Hatim Ghadbane Abdelatif Boulahya Cardiac Surgery Department Mohammed V Military Hospital Rabat Morocco Reanimation of Cardiac Surgery Department Mohamed V Medical Faculty Rabat Morocco

Aim: Comparing the results of acute phase infectious endocarditis surgery between two periods. Methods and Results: The study is about 2 series, series A between 1993 and 1997, and series B between 1998 and 2012, respectively 13 and 51 patients. The two periods were similar concerning the number of patients per year, which was 3.12 cases/year for series A and 3.64 cases/year for series B. The authors noted a change in epidemiological profile, with an increase of median age (31 y.o for series A and 37 y.o for series B), and the emergency of endocarditis on prosthetic valve (none on series A and 8 cases for series B). Surgical indications and results didn’t change too much, hospital mortality rate was 15.3% for series A and 17.6% for series B. Conclusion: Infectious endocarditis is still a major public healthcare problem in developing countries, despite the development of diagnostic tools and patient care. Prevention is still the major asset in the treatment of this disease.

关键词： Infectious Endocarditis Acute Phase Surgery

Overall Assessment of Heat Transfer for a Rarefied Flow in a Microchannel with Obstacles Using Lattice Boltzmann Method

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工程与科学中的计算机建模(英文) 2024年第1期138卷 273-299页

作者： Siham Hammid Khatir Naima Omolayo M.Ikumapayi Cheikh Kezrane Abdelkrim Liazid Jihad Asad Mokdad Hayawi Rahman Farhan Lafta Rashid Naseer Ali Hussien younes Menni Laboratory of Development in Mechanics and Materials(LDMM) Zian Achour UniversityDjelfaPB 3117Algeria Department of Technology University Center Salhi Ahmed Naama(Ctr.Univ.Naama)P.O.Box 66Naama45000Algeria Department of Mechanical and Mechatronics Engineering Afe Babalola University Ado Ekiti360101Nigeria Departement of Physics Faculty of ScienceAbou Bekr Belkaid UniversityTlemcen13000Algeria Department of Physics Faculty of Applied SciencesPalestine Technical University-KadoorieTulkarmPalestine Aeronautical Technical Engineering Al-Farahidi UniversityBaghdad10011Iraq Mechanical Engineering Department University of KerbalaKarbala56001Iraq Information and Communication Technology Research Group Scientific Research CenterAl-Ayen UniversityThi-QarIraq National University of Science and Technology Dhi QarIraq

The objective of this investigation is to assess the effect of obstacles on numerical heat transfer and fluid flow momentum in a rectangular microchannel(MC).Two distinct configurations were studied:one without obstacles and the other with alternating obstacles placed on the upper and lower *** research utilized the thermal lattice Boltzmann method(LBM),which solves the energy and momentum equations of fluids with the BGK approximation,implemented in a Python coding *** jump and slip velocity conditions were utilized in the simulation for the MC and extended to all obstacle *** study aims to analyze the rarefaction effect,with Knudsen numbers(Kn)of 0.012,0.02,and *** outcomes indicate that rarefaction has a significant impact on the velocity and temperature *** presence of nine obstacles led to slower fluid movement inside the microchannel MC,resulting in faster cooling at the *** MCs with obstacles,the rarefaction effect plays a crucial role in decreasing the Nusselt number(Nu)and skin friction coefficient(Cf).Furthermore,the study demonstrated that the obstacles played a crucial role in boosting fluid flow and heat transfer in the *** findings suggest that the examined configurations could have potential applications as cooling technologies in micro-electro-mechanical systems and microdevice applications.

关键词： Microfluid rarefied flow LBM microchannel Knudsen number numerical simulation

Metasurfaces for next-generation wireless communication systems

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National Science Review 2023年第8期10卷 17-19页

作者： younes Ra'di Nikita Nefedkin Petar Popovski Andrea Alù Department of Electrical Engineering and Computer Science Syracuse University Photonics Initiative Advanced Science Research Center City University of New York Department of Electronic Systems Aalborg University Physics Program Graduate Center City University of New York

The pace of development in the world of 5G communication systems has proven to be much more demanding than previous generations, with 5G-Advanced seemingly around the corner [1]. Extensive research is already underway to structure the next generation of wireless systems(i.e. 6G), which may potentially enable an unprecedented level of human–machine interaction [2].

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A systematic review of occupational exposure to respirable coal mine dust(RCMD)in the *** industry

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International Journal of Coal Science & Technology 2023年第2期10卷 32-44页

作者： younes Shekarian Elham Rahimi Mohammad Rezaee Pedram Roghanchi John and Willie Leone Family Department of Energy and Mineral Engineering Earth and Mineral Sciences(EMS)Energy InstituteThe Pennsylvania State UniversityUniversity ParkUSA Department of Mineral Engineering New Mexico Institute of Mining and TechnologySocorroNMUSA

Cumulative inhalation of respirable coal mine dust(RCMD)can lead to severe lung diseases,including coal worker's pneu-moconiosis(CWP),silicosis,mixed dust pneumoconiosis,dust-related diffuse fibrosis(DDF),and progressive massive fibrosis(PMF).Statistics from the number of reported cases showed a significant decrease in the progression of respiratory diseases in the ***,an unexpected increase in the number of CWP cases was reported in the late *** date,there has been no comprehensive systematic review to assess all contributing factors to the resurgence of CWP *** study aims to investigate the effects of various mining parameters on the prevalence of CWP in coal mines.A systematic review using the preferred reporting items for systematic reviews and meta-analysis(PRISMA)method was conducted to investigate the health effects of RCMD exposure and identify the factors that may contribute to the recent resurgence of CWP *** systematic review yielded a total of 401 papers,which were added to the *** total number of 148 and 208 papers were excluded from the database in the process of screening and eligibility,***,18 papers were considered for data selection and full-text *** review revealed that factors including geographic location,mine size,mining operation type,coal-seam thickness,coal rank,changes in mining practices,technology advancement,and engi-neering dust control practices are contributing to the recent resurgence of CWP among coal ***,the evidence for root causes is limited owing to the methodological constraints of the studies;therefore,further detailed studies are needed.

关键词： Respirable coal mine dust Systematic review Coal worker's pneumoconiosis Respiratory diseases Exposure limit Occupational exposure

Efficient method for wind velocity estimation and power-extraction maximization using a fourth-order Luenberger observer in a wind-energy-conversion system

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Clean Energy 2022年第6期6卷 797-809页

作者： younes Azelhak Damien Voyer Hicham Medromi Laboratory of Research in Engineering(LRI) System Architecture Team(EAS)Hassan II University—ENSEM Casablanca 8118 Morocco EIGSI La Rochelle 17000 France 3Laboratory of Research in Engineering(LRI)System Architecture Team(EAS)Hassan II University—ENSEM Casablanca 8118Morocco

This paper proposes an advanced method for estimating numerous parameters in a wind-energy-conversion system with high precision,especially in a transient state,including the rotation speed and mechanical torque of the turbine as well as wind *** suggested approach is designed into two ***,a fourth-order Luenberger observer is proposed to take into account the significant fluctuations of the mechanical torque that can be caused by wind *** observer provides an accurate estimate of speed and mechanical torque in all weather conditions and especially when the wind is *** the same time,the wind velocity is calculated using the Luenberger observer outputs and a model of the mechanical power generated by the ***,these estimated parameters are exploited as input in a maximum-power-point tracking(MPPT)algorithm using the tip-speed ratio(TSR)to improve the sensorless strategy *** results were performed using MATLAB®/Simulink®for both wind gust and real wind *** have verified that for wind gusts with jumps ranging from 3 to 7 m/s,the new observer manages to better follow the rotation speed and the torque of the turbine compared to a usual *** addition,we demonstrated that by applying the proposed estimator in the improved TSR-MPPT strategy,it is possible to extract 3.3%more energy compared to traditional approaches.

关键词： wind velocity estimation mechanical parameters estimation MPPT algorithm wind-energy-conversion system

Dynamics of groundwater recharge near a semi-arid Mediterranean intermittent stream under wet and normal climate conditions

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Journal of Arid Land 2022年第7期14卷 739-752页

作者： Youssef HAJHOUJI younes FAKIR Simon GASCOIN Vincent SIMONNEAUX Abdelghani CHEHBOUNI Faculty of Sciences Semlalia Cadi Ayyad University40000MarrakechMorocco Center for Remote Sensing Application(CRSA) UM6P43150BenguerirMorocco Center for the Study of the Biosphere from Space(CESBIO) 31400ToulouseFrance

In arid and semi-arid stream-dominated systems,the temporal variability in groundwater recharge has not been widely *** questions remain about the sources of groundwater recharge,its patterns,and the appropriate measuring ***,the main objective of the present study was to assess the changes that might affect the pattern of groundwater recharge under wetter than normal surface water ***,the groundwater depth was monitored near a semi-arid Mediterranean intermittent stream on the piedmont of the High Atlas Mountains in the mountain catchment of the Wadi Rheraya over two hydrological years(2014-2016)with different climate conditions:extreme wet and normal *** recharge was assessed using the episodic master recession *** the two years,the pattern of groundwater recharge was dominated by episodic events and by a high seasonality from wet seasons to dry *** the wet year(2014-2015),the highest groundwater recharge was recorded following an extreme flood,which deeply replenished ***,an exceptional steady state of the groundwater depth was induced by a steady groundwater recharge *** several groundwater recharge events,the assessed recharge had multiple sources,mainly from streamflow at the local scale,but possibly from precipitation,underflow,deep percolation or irrigation return from the upstream part of the *** recharge by streamflow was likely to be short-lived,and lateral recharge was likely to last ***,the episodic master recession algorithm estimated the total groundwater recharge that could encompass various *** the future,more studies and multidisciplinary approaches should be carried out to partition these sources and determine their specific *** semi-arid stream-dominated systems,different groundwater recharge patterns induced by extreme hydrological events(e.g.,wet events)and various potential sources of gro

关键词： groundwater recharge water table fluctuation episodic master recession algorithm episodic recharge wet year Wadi Rheraya Citation:Youssef HAJHOUJI

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Red osier dogwood and its use in animal nutrition:A review

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Animal Nutrition 2023年第2期13卷 64-77页

作者： Taiwo Joseph Erinle Martine Boulianne younes Miar Robert Scales Deborah Adewole Department of Animal Science and Aquaculture Faculty of AgricultureDalhousie UniversityTruro NSB2N 5E3Canada Department of Clinical Sciences Faculty of Veterinary MedicineUniversity of Montreal3200 Sicotte StreetSaint-Hyacinthe QCJ2S 2M2Canada Red Dog Enterprises Ltd. Swan River MBR0L 1Z0Canada

As the human population increases globally,the food animal industry has not been spared from the monumental demand for edible animal products,particularly *** has necessitated the simulta-neous expansion of the productivity of the animal sector to meet the ever-growing human *** antibiotics have been used in food animal production with commendable positive impacts on their growth performance,their sole contributive factor to the increasing incidence of antimicrobial resistance has ushered the strict restrictions placed on their use in the animal *** has handed a setback to both animals and farmers;thus,the intense push for a more sustainable antibiotic alternative for use in animal *** use of plants with concentrated phytogenic compounds has gained much interest due to their beneficial bioactivities,including antioxidant and selective *** the reported beneficial activities of phytogenic additives on animals vary due to their varying total polyphenol concentrations(TPC),red osier dogwood(ROD)plant materials boast of high TPC with excellent antioxidant prowess and growth improvement capacities compared to some plant extracts commonly used in ***,its adoption in research and commercial scale is still ***,the present review aims to provide concise information on the dietary potential of ROD plant materials in animal feeding.

关键词： Red osier dogwood Antibiotic-alternative Polyphenolic compounds Antioxidant Antimicrobial

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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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Cellulose Fibre from Schinus molle and Its Characterization

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Journal of Renewable Materials 2022年第10期10卷 2593-2606页

作者： Abir Razzak Faten Mannai Ramzi Khiari younes Moussaoui Mohamed N.Belgacem Laboratory for the Application of Materials to the Environment Waterand Energy(LR21ES15)Faculty of Sciences of GafsaUniversity of GafsaGafsa2112Tunisia Faculty of Sciences of Gafsa University of GafsaGafsa2112Tunisia Laboratory of Environmental Chemistry and Cleaner Process(LR21ES04) University of MonastirMonastir5019Tunisia Higher Institute of Technological Studies(ISET)of Ksar-Hellal Ksar-Hellal5070Tunisia University of Grenoble Alpes CNRSGrenoble INPLGP2GrenobleF-38000France Organic Chemistry Laboratory(LR17ES08) Faculty of Sciences of SfaxUniversity of SfaxSfax3029Tunisia

The exploitation of biomass represents a major environmental challenge related to the protection of the environment and the progressive exhaust of fossil *** this perspective,the main objective of this work is the extraction and the characterization of natural lignocellulosic fibers from the Schinus *** cellulose fibre extraction was investigated employing conditions of alkali *** the alkaline steps,a bleaching treatment was done and let to a yield about 45%pure *** identification of the chemical composition of Schinus molle reveals that this raw material contains a high level of biopolymers with a cellulose rate of 53.2%.Extracted cellulose fibers have been characterized by several techniques such as scanning electron microscopy,Fourier transform infrared,X-ray diffraction,Morfi,and by the determination of their degree of ***-IR results confirm the purity of the cellulosic fibers,and XRD analysis reveals that the crystallinity increases after the delignification and bleaching treatments.

关键词： Schinus molle cellulose alkaline treatment morphological studies