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Surface activation of viscose textiles via air,argon,and oxygen dielectric barrier discharge plasma:influence of peak voltage

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Plasma Science and Technology 2024年第7期26卷 134-147页

作者： Shrouk ELASHRY Usama m.RASHED mostafa A.WAHBA Hend m.AHmED nabil m.elsiragy Plasma Laboratory Physics DepartmentFaculty of scienceTanta UniversityTanta 31527Egypt Physics Department Faculty of Science(Male)Al-Azhar UniversityCairo 11651Egypt Textile Research Industrial Division National Research CentreDokkiGiza 12622Egypt

This paper discusses the use of atmospheric pressure dielectric barrier discharge(DBD)plasma treatment to enhance the surface qualities of viscose *** study explores the effects of different plasma gases,discharge voltages,and exposure times on the treated *** findings emphasize the importance of optimizing the plasma's peak voltage to achieve the desired surface treatment *** document also presents data on colour strength,wettability,colour fastness,and tensile strength of the treated fabrics,as well as scanning electron microscopy(SEm)analysis of surface morphology and chemical analysis using fouriertransition infrared spectroscopy(FTIR)and energy dispersive X-ray(EDX).The results show that treatment at a peak voltage of 11.83 k V is more efficient,except for the tensile strength which is enhanced at a peak voltage of 8.92 k *** oxygen plasma treatment significantly improves the colour strength,which exhibits an increase from 11 to *** intensified colour was attributed to the significant influence of electrostatic interactions between the charged hydroxyl groups of the oxygen plasma treated viscose textiles and the dye molecules,which enhance the *** oxygen DBD plasma exhibits a higher ability to enhance the properties of textiles when compared to air and argon *** study presents a sustainable,economical,secure,and ecologically friendly approach to explore new fabrics for specific uses.

关键词： Lissajous diagrams printability wettability tensile strength SEm EDX FTIR

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The Upper Jurassic sediments,marib-Shabwa Basin,Yemen:Lithofacies aspects and sequence stratigraphic analysis

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Energy Geoscience 2024年第1期5卷 342-357页

作者： mohammed Albaroot mohamed m.Elhossainy nabil m.Al-Areeq Emad A.Abdullah Abdelhamid m.Salman Department of Applied Geology Faculty of Science and EducationUniversity of Saba RegionMaribYemen Department of Geology Faculty of ScienceKafrelsheikh UniversityKafrelsheikh33516Egypt Department of Geology and Environment Faculty of Applied SciencesThamar UniversityYemen Department of mineral Developing and Oil&Gas Engineering Academy of EngineeringPeoples’Friendship University of Russia(RUDN University)Moscow117198Russia Department of Geology Faculty of ScienceAssiut UniversityAssiut71516Egypt

The present study is devoted to understanding the evolution of the Upper Jurassic Sab'atayn Formation in the marib-Shabwa Basin,Yemen,through a sequence stratigraphic analysis based on integrating datasets of sedimentology,seismic sections,and well *** Sab'atayn Formation(Tithonian age)is represented by a series of clastic and evaporites that were deposited under fluvio-deltaic to prodeltaic *** is divided into four members including Yah(at the base),upwards to Seen,Alif,and Safir at the *** third-order depositional sequences were determined for the Tithonian succession which were separated by three sequence *** sequences were classified into their systems tracts signifying several sedimentation patterns of progradational,aggradational,and retrogradational parasequence *** first depositional sequence corresponds to the early-middle Tithonian Yah and Seen units that can be classified into lowstand,transgressive,and highstand systems *** second sequence comprises the late Tithonian Alif unit that can be subdivided into transgressive and highstand systems *** sandy deposits of the Alif member(highstand deposits)represent the most productive hydrocarbon reservoir in the *** Upper Jurassic sediments in the study area were resulted from a combination of eustatic and tectonic effects.

关键词： Sequence stratigraphy Sandstone reservoir Well logs Upper Jurassic marib-Shabwa Basin Yemen

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Heart-Net: A multi-modal Deep Learning Approach for Diagnosing Cardiovascular Diseases

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Computers, materials and Continua 2024年第3期80卷 3967-3990页

作者： Alsekait D.m. Shdefat A.Y. nabil A. Nawaz A. Rana m.R.R. Ahmed Z. Fathi H. AbdElminaam D.S. Department of Computer Science and Information Technology Applied College Princess Nourah bint Abdulrahman University Riyadh 84428 Saudi Arabia College of Engineering and Technology American University of the Middle East Egaila 15453 Kuwait Faculty of Computers Science Misr International University Cairo 11800 Egypt University Institute of Information Technology PMAS Arid Agriculture University Rawalpindi 46000 Pakistan Department of Computer Science International Islamic University Islamabad 04436 Pakistan Jadara Research Center Jadara University Irbid 21110 Jordan Information System Department Faculty of Computers and Artificial Intelligence Benha University Banha 13511 Egypt mEU Research Unit Middle East University Amman 11831 Jordan

Heart disease remains a leading cause of morbidity and mortality worldwide, highlighting the need for improved diagnostic methods. Traditional diagnostics face limitations such as reliance on single-modality data and vulnerability to apparatus faults, which can reduce accuracy, especially with poor-quality images. Additionally, these methods often require significant time and expertise, making them less accessible in resource-limited settings. Emerging technologies like artificial intelligence and machine learning offer promising solutions by integrating multi-modality data and enhancing diagnostic precision, ultimately improving patient outcomes and reducing healthcare costs. This study introduces Heart-Net, a multi-modal deep learning framework designed to enhance heart disease diagnosis by integrating data from Cardiac magnetic Resonance Imaging (mRI) and Electrocardiogram (ECG). Heart-Net uses a 3D U-Net for mRI analysis and a Temporal Convolutional Graph Neural Network (TCGN) for ECG feature extraction, combining these through an attention mechanism to emphasize relevant features. Classification is performed using Optimized TCGN. This approach improves early detection, reduces diagnostic errors, and supports personalized risk assessments and continuous health monitoring. The proposed approach results show that Heart-Net significantly outperforms traditional single-modality models, achieving accuracies of 92.56% for Heartnet Dataset I (HNET-DSI), 93.45% for Heartnet Dataset II (HNET-DSII), and 91.89% for Heartnet Dataset III (HNET-DSIII), mitigating the impact of apparatus faults and image quality issues. These findings underscore the potential of Heart-Net to revolutionize heart disease diagnostics and improve clinical outcomes. Copyright © 2024 The Authors. Published by Tech Science Press.

关键词： classification deep learning electrocardiogram Heart diseases magnetic resonance imaging

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Primary Hyperoxaluria Type 1 in Adulthood: Case Series

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Open Journal of Nephrology 2024年第3期14卷 350-360页

作者： Sara El maakoul Nada El Kadiri nabil Hmaidouch Salma Belmokadem Loubna Benamar Tarik Bouattar Naima Ouzeddoun Department of Nephrology Dialysis Renal Transplantation Ibn Sina University Hospital-Rabat Rabat Morocco Faculty of medicine and Pharmacy Mohammed V University Rabat Morocco

Introduction: Primary hyperoxaluria type 1 (HP1) is a rare lithiasis with systemic involvement, due to the accumulation of calcium oxalate crystals. In the absence of therapeutic management, it progresses to end-stage chronic renal failure. The aim of this study is to describe and analyse the observations of our patients with HP1. Patients and methods: This is a retrospective study carried out between 2014 and 2023 in the Nephrology-Dialysis Transplant Department of the Ibn Sina University Hospital in Rabat. The clinical, paraclinical and evolutionary elements were taken from the patients’ medical records. Results: We collected 11 cases, with a mean age of 27 ± 8.5 years and a m/F sex ratio of 1.7. The diagnosis of HP1 was made on the basis of genetic analysis in 8 patients, morphological and spectro-photometric analysis of the calculus in one patient, biopsy of the graft in one patient and crystalluria and a family history of PH1 in one patient. Two patients died, and 8 patients were on chronic haemdialysis with systemic damage. Only one patient maintained a stable GFR at 60 ml/min. Conclusion: Early diagnosis combined with conservative treatment is the only way to limit the rapid progression of this disease. This requires awareness and collaboration between nephrologists, urologists and biologists within a specialised team.

关键词： Primary Hyperoxaluria Adulthood Kidney Disease

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Stability and Bifurcation Analysis of a Discrete Predator-Prey model with mixed Holling Interaction

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Computer modeling in Engineering & Sciences 2020年第3期122卷 907-921页

作者： m.F.Elettreby Tamer nabil A.Khawagi mathematics Department Faculty of ScienceKing Khalid UniversityAbha9004Saudi Arabia. mathematics Department Faculty of ScienceMansoura UniversityMansoura35516Egypt. Basic Science Department Faculty of Computers and InformaticsSuez Canal UniversityIsmailiaEgypt. mathematics Department Faculty of Science and ArtsKing Khalid UniversityMohayil AsirSaudi Arabia.

In this paper,a discrete Lotka-Volterra predator-prey model is proposed that considers mixed functional responses of Holling types I and *** equilibrium points of the model are obtained,and their stability is *** dynamical behavior of this model is studied according to the change of the control *** find that the complex dynamical behavior extends from a stable state to chaotic ***,the analytical results are clarified by some numerical simulations.

关键词： Predator-prey model functional response of Holling type stability and bifurcation analysis chaos.

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machine learning-supported seismic stratigraphy of the Paleozoic Nubia Formation(SW Gulf of Suez-rift):Implications for paleoenvironmentpetroleum geology of a lacustrine-fan delta

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Petroleum 2023年第2期9卷 301-315页

作者： mohammad A.Abdelwahhab nabil A.Abdelhafez Ahmed m.Embabi Geology Department Faculty of ScienceAl-Azhar UniversityNasr CityCairoEgypt

Steeply dipping prograding fan deltas possess high reservoir quality facies that could be excellent targets while exploring for *** to their complex stacking nature,and limited examples,delineating their architectural elements is still *** this paper we mainly performed sedimentary facies analysis;applying various disciplines *** stratigraphy,seismic stratigraphy,GR-log motifs,and seismic waveform segmentation;so as to adequately depict the reservoir heterogeneity and quality of the Paleozoic Nubia clastics in West Esh El mallaha Concession(southwest Gulf of Suez rift).Organic maturity prediction,to confirm the hydrocarbon charging from source units to reservoir intervals,was also of most importance in this ***,1D basin model was established to define the past geologic events;subsidence,and thermal maturity;and their controls on sedimentary basin evolution and associated petroleum *** utilized several key-information scales;*** logs,and seismic *** different disciplines applied in this study points to a successful integrated reservoir characterization workflow capable of unfolding ancient environments and the associated hydrocarbon *** results show that Nubia Formation was built during the lowstandtransgressive phase of a 3rd order depositional *** encompasses fluvio-lacustrine system with eight sedimentary facies associations;form source to *** channels and mouth bars,settled in subaerial and subaqueous settings respectively,represent the most significant reservoir facies in the *** best hydrocarbon-reservoir quality,the deltaic mouth bars ought to attract attention of further oilfield development plans and be considered while investigating similar settings.

关键词： Seismic stratigraphy Nubia formation Paleoenvironment Petroleum geology West Esh El mallaha concession Gulf of Suez

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Amination of biochar surface from watermelon peel for toxic chromium removal enhancement

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Chinese Journal of Chemical Engineering 2021年第8期34卷 199-222页

作者： mohamed A.El-Nemr Ibrahim m.A.Ismail nabil m.Abdelmonem Ahmed El Nemr Safaa Ragab Department of Chemical Engineering Faculty of EngineeringCairo UniversityGizaEgypt Renewable Energy Program Zewail City of Science and TechnologyEgypt Environmental Division National Institute of Oceanography and FisheriesKayet BeyEl-AnfoushyAlexandriaEgypt

Watermelon peel residues were used to produce a new biochar by dehydration *** new biochar has undergone two methods of chemical modification and the effect of this chemical modification on its ability to adsorb Cr(VI)ions from aqueous solution has been *** biochars,melon-B,melon-BO-NH_(2) and melon-BO-TETA,were made from watermelon peel via dehydration with 50%sulfuric acid to give melon-B followed by oxidation with ozone and amination using ammonium hydroxide to give melon-BO-NH_(2) or Triethylenetetramine(TETA)to give *** prepared biochars were characterized by BET,BJH,SEm,FT-IR,TGA,DSC and EDAX *** highest removal percentage of Cr(VI)ions was 69%for melon-B,98%for melon-BO-NH_(2) and 99%for melon-BO-TETA biochars of 100 mg·L^(−1) Cr(VI)ions initial concentration and 1.0 g·L^(−1) adsorbents *** unmodified biochar(melon-B)and modified biochars(melon-BO-NH_(2) and melon-BO-TETA)had maximum adsorption capacities(Q_(m))of 72.46,123.46,and 333.33 mg·g^(−1),*** amination of biochar reduced the pore size of modified biochar,whereas the surface area was *** obtained data of isotherm models were tested using different error function *** Freundlich,Tempkin and Langmuir isotherm models were best fitted to the experimental data of melon-B,melon-BO-NH_(2) and melon-BO-TETA,*** adsorption rate was primarily controlled by pseudo-second–order rate ***,the functional groups interactions are important for adsorption mechanisms and expected to control the adsorption *** adsorption for the melon-B,melon-BO-NH_(2) and melon-BO-TETA could be explained for acid–base interaction and hydrogen bonding interaction.

关键词： Waste treatment Powder technology Citrullus lanatus Hexavalent chromium Biochar amination Adsorption

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3D-static reservoir and basin modeling of a lacustrine fan-deltaic system in the Gulf of Suez,Egypt

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Petroleum Research 2023年第1期8卷 18-35页

作者： mohammad A.Abdelwahhab nabil A.Abdelhafez Ahmed m.Embabi Geology Department Faculty of ScienceAl-Azhar UniversityNasr CityCairo11884Egypt

Lacustrine-fan deltas feature high reservoir-quality lithounits that are critical targets to hydrocarbon exploration and ***,depicting their intricate sedimentary architectural elements is still challenging due to complex stacking-patterns and limited *** this study,both 3D-static geocellular reservoir modeling and 1D-basin modeling approaches were combined as an established effective workflow that is capable of efficiently delineating reservoir-heterogeneities and confirming *** integration was for the purpose of unlocking the ultimate petroleum potential of fluvio-lacustrine units,Nubia Formation,in the southwest of the Gulf of Suez rift(West Esh-Elmallaha Concession,Egypt).Pixel-based stochastic-simulation was applied,constrained by an established depositional-model developed after adequate integrated-facies analysis,upon geocellularly modeling rock and fluid properties of Nubia reservoir intervals;utilizing several key-information scales(seismic-profiles,well-logs).The results reveal a lowstand-transgressive systems tract encompassing fluvio-lacustrine depositional-systems subdivided into eight facies-associations,of which fluvialchannels and deltaic mouth bars represent significant reservoir-quality *** efficient reservoir-quality,mouth sand-bars deserve special consideration,and testing,while running further oilfield development-endeavours and investigating similar-settings.

关键词： Facies analysis 3D-static reservoir modeling Basin modeling Paleoenvironment-petroleum geology Gilbert-type fan-deltas Gulf of suez rift

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Separation of rare earth elements from sulfate leach liquor by heterocyclic nitrogen compound

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Journal of Rare Earths 2008年第4期26卷 544-551页

作者： GHADA m. mahmoud nabil T. El Hazek AHmAD m. Farag OmNEYA m. El Hussaini Nuclear materials Authority P.O. Box 530 El Maadi Cairo Egypt Chemistry department Faculty of Science Cairo University Giza Egypt

Separation of rare earth dements by solvent extraction has actually been widely used in various fields from analytical chemistry to hydrometallurgy. A representative ore sample obtained from Kadabora Batholiths-Eastern Desert of Egypt, containing the multiple oxides rare earth minerals： Samarskite, Fergusonite, Betafite, and Pyrochlore, was subjected to sulfuric acid leaching. Different sets of equilibrium loading experiments were carded out on a bench scale for the extraction of rare earths （cerium and yttrium） from the sulfate leach liquor using 8,9-dihydro[1,2,4]triazolo[1,5-a]quinazolin-6（TH）-one {TQ} dissolved in methylene chloride. Stripping was carded out by 20% sodium hydroxide. A rare earth cake was produced by oxalic acid precipitation. Its purity reached 87.3%.

关键词： triazolopyrimidine extraction stripping precipitation rare earths

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Geochemical assessment, mixing behavior and environmental impact of thermal waters in the Guelma geothermal system,Algeria

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Acta Geochimica 2019年第5期38卷 683-702页

作者： Foued Bouaicha Henia Dib Oualid Bouteraa nabil manchar Kamel Boufaa nabil Chabour Abdeslam Demdoum Department of Applied Biology Universite des Freres Mentouri Constantine 1025000 ConstantineAlgeria Department of Geology Universite des Freres Mentouri Constantine 1025000 ConstantineAlgeria Laboratory of Geology and Environment (LGE) Uni versite des Freres Mentouri Constantine 1ConstantineAlgeria Department of Geology Sciences University of Larbi Ben M'hidi04000 Oum El BouaghiAlgeria Department of Earth Sciences University of Setif 119000 SetifAlgeria

A study of thirteen geothermal springs located in the geothermal field of Guelma,northeastern Algeria,was *** were collected during the period between January 2014 and February *** processes responsible for the chemical composition of thermal and mineralized water were *** hydrochemical analysis shows that the thermal waters are characterized by the presence of two different chemical facies,the first type SO4-Ca in the east,west and south of Guelma,the second type HCO3-Ca in the *** analysis also attributed to sodium,chlorides,and sulfates to an evaporitic terrigenous origin by the molar ratio Sr2+/Ca2+.The thermal spring waters from Guelma geothermal system have a meteoric origin,and all samples are immature with strong mixing between hot and shallow waters with 19-38.5%rate of *** silica geothermometer shows that these thermal waters have a temperature varying from 84 to 122℃and that the water came from a depth of 2100-3000 m through a fault system that limits the pullapart basin of *** environmental effluent from thermal spas could pollute in both the irrigation and drinking waters,and which imposes danger on the health of the inhabitants of the region.

关键词： Geochemistry Geothermometry mixing Thermal effluents Guelma Algeria

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