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BIOCelL 2019年第2期43卷 65-71页

作者： RAMESA SHAFI BHAT amina el gezeery ABIR BEN BACHAN MONA AWAD ALONAZI LEENA SALEH ALSUHAIBANI AFAF el-ANSARY Biochemistry Department College of ScienceKing Saud University Human Genetic Department Medical Research instituteAlexandria UniversityEgypt Central Laboratory Female Centre for Scientific and Medical StudiesKing Saud UniversitySaudi Arabia Medicinal Chemistry Department National Research CentreDokkiCairoEgypt

Fluoride is a key ingredient of many psychiatric drugs like fluoxetine(Prozac■Fluoxetine■).Pregnant women frequently use this drug as they suffer from depression and anxiety disorders during this *** is able to reach the fetus through the placenta and passes to the newborn through *** the present study,female Wistar rats were treated with 5,10,and 20 mg/L fluoxetine(containing 94% fluorides)from pregnancy day 10 to day *** delivery,the levels of the enzymatic antioxidants in the brain of their offspring at postnatal day 2 were *** results showed that,in all fluoxetine exposed groups compared with the control group,there was a significant decrease(P0.05)in the activity of malondialdehyde and creatine *** results suggest that fluoxetine may be a developmental neurotoxicant due to presence of fluoride hence must be used carefully during pregnancy.

关键词： Antidepressant Brain Neonate Prozac Oxidative stress

Advancements,strategies,and prospects of solid oxide electrolysis cells(SOECs):Towards enhanced performance and large-scale sustainable hydrogen production

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Journal of Energy Chemistry 2024年第7期94卷 688-715页

作者： amina Lahrichi Youness el Issmaeli Shankara S.Kalanur Bruno G.Pollet Green Hydrogen Lab(GH2Lab) Hydrogen Research Institute(HRI)Universitédu QuébecàTrois-Rivières(UQTR)3351 boulevard des ForgesTrois-RivièresQuébec G9A 5H7Canada

Solid oxide electrolysis cells(SOECs)represent a crucial stride toward sustainable hydrogen generation,and this review explores their current scientific challenges,significant advancements,and potential for large-scale hydrogen *** SOEC technology,the application of innovative fabrication tech-niques,doping strategies,and advanced materials has enhanced the performance and durability of these systems,although degradation challenges persist,implicating the prime focus for future *** we provide in-depth analysis of the recent developments in SOEC technology,including Oxygen-SOECs,Proton-SOECs,and ***,Hybrid-SOECs,with their mixed ionic conducting electrolytes,demonstrate superior efficiency and the concurrent production of hydrogen and *** with the capacity to harness waste heat,these advancements in SOEC technology present signif-icant promise for pilot-scale applications in *** review also highlights remarkable achieve-ments and potential reductions in capital expenditure for future SOEC systems,while elaborating on the micro and macro aspects of sOECs with an emphasis on ongoing research for optimization and *** concludes with the potential of SOEC technology to meet various industrial energy needs and its significant contribution considering the key research priorities to tackle the global energy demands,ful-fillment,and decarbonization efforts.

关键词： Solid oxide electrolysis cells Proton-SOECs Oxygen-SoECs Hybrid-SOECs Intermediate-high temperature electrolysers Hydrogenproduction

Hidden attractors in a new fractional-order discrete system: Chaos, complexity, entropy, and control

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Chinese Physics B 2020年第5期29卷 174-181页

作者： Adel Ouannas amina Aicha Khennaoui Shaher Momani Viet-Thanh Pham Reyad el-Khazali Laboratory of Mathematics Informatics and Systems(LAMIS)University of Laarbi TebessiTebessa12002Algeria College of Humanities and Sciences Ajman UniversityAjmanUAE Laboratory of Dynamical Systems and Control University of Larbi Ben M’hidiOum El BouaghiAlgeria Department of Mathematics Faculty of ScienceUniversity of JordanAmman 11942Jordan Nonlinear Systems and Applications Faculty of Electrical and Electronics EngineeringTon Duc Thang UniversityHo Chi Minh CityVietnam ECCE Department Khalifa UniversityAbu-Dhabi 127788United Arab Emirates

This paper studies the dynamics of a new fractional-order discrete system based on the Caputo-like difference *** is the first study to explore a three-dimensional fractional-order discrete chaotic system without *** phase portrait,bifurcation diagrams,and largest Lyapunov exponents,it is shown that the proposed fractional-order discrete system exhibits a range of different dynamical ***,different tests are used to confirm the existence of chaos,such as 0-1 test and C0 *** addition,the quantification of the level of chaos in the new fractional-order discrete system is measured by the approximate entropy ***,based on the fractional linearization method,a one-dimensional controller to stabilize the new system is *** results are presented to validate the findings of the paper.

关键词： discrete chaos discrete fractional calculus hidden attractor

Airstacknet: A Stacking Ensemble-Based Approach for Air Quality Prediction

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Computers, Materials & Continua 2023年第1期74卷 2073-2096页

作者： Amel Ksibi amina Salhi Ala Saleh Alluhaidan Sahar A.el-Rahman Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityRiyadhSaudi Arabia electrical Engineering Department Faculty of Engineering-ShoubraBenha UniversityCairoEgypt

The quality of the airwe breathe during the courses of our daily lives has a significant impact on our health and well-being as ***,personal air quality measurement remains *** this study,we investigate the use of first-person photos for the prediction of air *** main idea is to harness the power of a generalized stacking approach and the importance of haze features extracted from first-person images to create an efficient new stacking model called AirStackNet for air pollution *** consists of two layers and four regression models,where the first layer generates meta-data fromLight Gradient Boosting Machine(Light-GBM),Extreme Gradient Boosting Regression(XGBoost)and CatBoost Regression(CatBoost),whereas the second layer computes the final prediction from the meta-data of the first layer using Extra Tree Regression(ET).The performance of the proposed AirStackNet model is validated using public Personal Air Quality Dataset(PAQD).Our experiments are evaluated using Mean Absolute Error(MAE),Root Mean Square Error(RMSE),Coefficient of Determination(R2),Mean Squared Error(MSE),Root Mean Squared Logarithmic Error(RMSLE),and Mean Absolute Percentage Error(MAPE).Experimental Results indicate that the proposed AirStackNet model not only can effectively improve air pollution prediction performance by overcoming the Bias-Variance tradeoff,but also outperforms baseline and state of the art models.

关键词： Personal air quality prediction airstacknet ensemble learning feature extraction stacking

Efficiency and degradation products elucidation of the photodegradation of mefenpyrdiethyl in water interface using TiO_2 P-25 and Hombikat UV100

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Journal of Environmental Sciences 2012年第9期24卷 1686-1693页

作者： amina Chnirheb Mourad Harir Basem Kanawati Mohammed el Azzouzi Istvan Gebefgi Philippe Schmitt-Kopplin Department of BioGeoChemistry and Analytik German Research Center for Environmental HealthHelmholtz Center MunichIngoldstdter Landstraβe 1D-85764 NeuherbergGermany University Mohammed V-Agdal Faculty of SciencesAvenue Ibn BatoutaBP 1014 RabatMorocco. Lehrstuhl fr Chemische-Technische Analyse und Chemische Lebensmitteltechnologie Technische Universitt MuenchenWeihenstephaner Steig 2385354 Freising-WeihenstephanGermany

The photodegradation of mefenpyrdiethyl （MFD）, an herbicide safener, was investigated in aqueous suspensions by using Degussa P-25 and Hombikat UV100 titanium oxide under simulated sunlight irradiation. The effects of initial concentration of the herbicide, pH, catalysts and hydrogen peroxide doses as well as their combinations were studied and optimized. Accordingly, the kinetic parameters were determined and the effectiveness of the processes was assessed by calculating the rate constants. A pseudo first-order kinetics was observed. Under experimental conditions, the degradation rate constants were strongly influenced using P-25 and no noticeable effect was observed for Hombikat UV100. DFT calculations with B3LYP/6-311＋G（2d,p）//B3LYP/6-31＋G（d,p） level of theory were performed to check whether significant conformational changes occur when the charge state of the MFD substrate changes and whether these changes could play a role in the dependency of photodegradation rate constant on the studied pH. High resolution mass spectrometry （FT-ICR/MS） was implemented to identify the main degradation products.

关键词： photodegradation mefenpyrdiethyl P-25/Hombikat UV100 kinetic degradation products

A new correlation-based approach for ensemble selection in random forests

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International Journal of Intelligent Computing and Cybernetics 2021年第2期14卷 251-268页

作者： Mostafa el Habib Daho Nesma Settouti Mohammed el Amine Bechar amina Boublenza Mohammed Amine Chikh Biomedical Engineering Laboratory University of TlemcenTlemcenAlgeria

Purpose-Ensemble methods have been widely used in the field of pattern recognition due to the difficulty offinding a single classifier that performs well on a wide variety of *** the effectiveness of thesetechniques,studies have shown that ensemble methods generate a large number of hypotheses and thatcontain redundant classifiers in most *** works proposed in the state of the art attempt to reduce allhypotheses without affecting ***/methodology/approach-In this work,the authors are proposing a pruning method that takes intoconsideration the correlation between classifiers/classes and each classifier with the rest of the *** authorshave used the random forest algorithm as trees-based ensemble classifiers and the pruning was made by atechnique inspired by the CFS(correlation feature selection)***-The proposed method CES(correlation-based Ensemble Selection)was evaluated onten datasets from the UCI machine learning repository,and the performances were compared to sixensemble pruning *** results showed that our proposed pruning method selects a smallensemble in a smaller amount of time while improving classification rates compared to the ***/value-CES is a new ordering-based method that uses the CFS *** selects,in a shorttime,a small sub-ensemble that outperforms results obtained from the whole forest and the other state-of-thearttechniques used in this study.

关键词： Ensemble pruning Random forest Tree selection Correlation CFS CES

Effect of the synthesis route on the structural and dielectric properties of SrBi1.8Y0.2Nb2O9 ceramics

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International Journal of Minerals,Metallurgy and Materials 2018年第11期25卷 1304-1312页

作者： Mohamed Afqir amina Tachafine Didier Fasquelle Mohamed elaatmani Jean-Claude Carru Abdelouahad Zegzouti Mustapha el Hammioui Laboratoire des Sciences des Matériaux Inorganiques et leurs Applications Facultédes Sciences SemlaliaUniversitéCadi AyyadMarrakech 40000Maroc Unite de Dynamique et Structure des Materiaux Moleculaires Universite du Littoral-Cote d’OpaleCalais 62100France Laboratoire de recherche sur la réactivitédes matériaux et l’optimisation des procédés Facultédes Sciences SemlaliaUniversitéCadi Ayyad 40000MarrakechMaroc

This work is devoted to the synthesis and characterization of yttrium-doped SrBi_2Nb_2O_9 ceramics prepared by three methods: solid state reaction, co-precipitation, and hydrothermal. Multiple characterizations, specifically scanning electron microscopy(SEM), X-ray powder diffraction(XRD), and Fourier transform infrared spectroscopy(FTIR), were used to validate the structural feature. The crystallite size was estimated by Scherrer's formula and the Williamson–Hall plot. The effect of the process on the band intensities of the FTIR spectra was investigated. The crystallite size and microstructure of ceramics prepared from different synthesis processes were strongly influenced by the sinterability. SEM images revealed nanograin ceramics for materials prepared by co-precipitation and hydrothermal methods and micrograin ceramics prepared by the solid state method. The synthesized compounds underwent phase transitions at 480–465°C. The dielectric and electrical properties of these Y-doped SrBi_2Nb_2O_9 ceramics appear to be dependent on the grain size.

关键词： Aurivillius,synthesis routes crystallite size microstructure dielectric

The optimum conditions for methanol conversion to dimethyl ether over modified sulfated zirconia catalysts prepared by different methods

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燃料化学学报 2021年第1期49卷 63-71页

作者： Doaa S.el-DESOUKI amina H.IBRAHIM Samira M.ABDelAZIM Noha A.K.ABOUL-GHEIT Dalia R.ABDel-HAFIZAR Processes Development Department EPRICairo 11727Egypt Refining Department EPRICairo 11727Egypt

Sulfated zirconia(SZ)and two promoted 1% Mn/SZ catalysts which have been prepared via sol gel(Mn/SZ-S)and impregnation(Mn/SZ-I)methods were *** morphology of the catalysts was characterized by XRD,BET,NH3-TPD,ICP,SEM and FT-IR *** conversion of methanol to dimethyl ether and hydrocarbons was carried out in the temperature range of 120−300℃.The Mn/SZ-S showed the highest activity due to the high surface area with suitable *** optimum condition of Mn/SZ-S catalyst was investigated at 200℃ and LHSV of 0.02 h^−1 in a time range from 30 to 210 *** was found that the total conversion decreased from 80.18% to 53.26% at 210 *** reusability of this catalyst was studied at the optimum condition up till four cycles for 1 *** characterization of the reused catalyst showed a significant change in the structure and surface acidity due to the blockage of the surface acid sited by carbonaceous materials.

关键词： catalysts dehydration DME sulfate content sulfated zirconia

New stem cell autophagy surrogate diagnostic biomarkers in earlystage hepatocellular carcinoma in Egypt:A pilot study

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World Journal of Hepatology 2021年第12期13卷 2137-2149页

作者： Tarek Yosef Wesam Ahmed Ibrahim Marwa Matboli amina Ahmed Swilam Sarah el-Nakeep Gastroenterology and Hepatology Unit Department of Internal MedicineFaculty of MedicineAin Shams UniversityCairo 11591Egypt Department of Biochemistry Faculty of MedicineAin Shams UniversityCairo 11591Egypt Department of Internal Medicine Health Affair DirectorateMinistry of Health and PopulationCairo 11591Egypt

BACKGROUND Stem cell autophagy disruption is responsible for the development of hepatocellular carcinoma(HCC).Many non-coding RNAs are linked to the activation and inhibition of certain *** SQSTM1 gene controls stem cell autophagy as shown in previous *** upregulation of SQSTM1 is associated with the inhibition of autophagy in cancerous stem cells in patients with *** To determine whether serum microRNA,hsa-miR-519d,is linked to SQSTM1 gene and whether they could be used as diagnostic biomarkers for early-stage *** In silico analysis was performed to determine the most correlated genes of autophagy with ***1 and hsa-miR-519d were validated through this pilot clinical *** study included 50 Egyptian participants,who were classified into three subgroups:Group 1 included 34 patients with early-stage HCC,Group 2 included 11 patients with chronic liver disease,and Group 3(control)included 5 healthy *** patients were subjected to full laboratory investigations,including viral markers and alpha-fetoprotein(AFP),abdominal ultrasound,and clinical assessment with the Child–Pugh score ***,the patients with HCC underwent triphasic computed tomography with contrast to diagnose and determine the tumor site,size,and *** real-time polymerase chain reaction was used to assess hsa-miR-519d-3p and SQSTM1 in the serum of all the study *** Hsa-miR-519d-3p was significantly upregulated in patients with HCC compared with those with chronic liver disease and healthy subjects with an area under the curve(AUC)of 0.939,with cutoff value 8.34,sensitivity of 91.2%,and specificity of 81.8%.SQSTM1 was upregulated with an AUC of 0.995,with cutoff value 7.89,sensitivity of 97.1%,and specificity of 100%.AFP significantly increased in patients with HCC with an AUC of 0.794,with cutoff value 7.30 ng/mL,sensitivity of 76.5%,and specificity of 72.7%.CONCLUSION This study is the first to show a direct re

关键词： Autophagy Hepatocellular carcinoma miRNA miR-519d Stem cell SQSTM1

Selecting accurate post-elimination monitoring tools to prevent reemergence of urogenital schistosomiasis in Morocco:a pilot study

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Infectious Diseases of Poverty 2017年第1期6卷 664-672页

作者： Abdelaali Balahbib Fatima Amarir Paul L.A.M.Corstjens Claudia Jde Dood Govert Jvan Dam amina Hajli Meryem Belhaddad Bouchra el Mansouri Abderrahim Sadak Mohamed Rhajaouim el Bachir Adlaoui National Reference Laboratory for Schistosomiasis and Malacology National Institute of HygieneAgdalRabatMorocco Faculty of Science Laboratory of Zoology and General BiologyAgdalRabatMorocco Laboratory of Parasitology and Malacology Institute of Nursing Professions and Health TechniquesCasablancaMorocco Department of Molecular Cell Biology Leiden University Medical CenterLeidenThe Netherlands Department of Parasitology Leiden University Medical CenterLeidenThe Netherlands

Background:After alleged stop of transmission of schistosomiasis and further down the line in post elimination settings,sensitive tools are required to monitor infection status to prevent potential *** Rahala,where transmission cycle of Schistosoma haematobium is interrupted since 2004 but where 30%of snails are still infected by ***,potential human *** infection can’t be *** methods based on egg-counts do not provide the required sensitivity,antibody or antigen assays are envisaged as the most appropriate tools for this type of ***:In this pilot study,the performances of three assays were compared:two commercially available antibody tests(elISA and haemagglutination format)indicating exposure,and an antigen test(lateral flow strip format)demonstrating active *** 37 recruited study participants resided in Rahala(Akka,province Tata,Morocco).Participants had been diagnosed and cured from schistosomiasis in the period between 1983 and *** 2015 these asymptomatic participants provided fresh clinical samples(blood and urine)for analysis with the aforementioned diagnostics ***:No eggs were identified in the urine of the 37 *** haemagglutination test indicated 6 antibody positives whereas the elISA indicated 28 antibody positives,one indecisive and one false *** and haemagglutination results matched for 18 individuals,amongst which 5 out of 6 haemagglutination *** the antigen test(performed on paired serum and urine samples),serum from two participants(cured 21 and 32 years ago)indicated the presence of low levels of the highly specific Schistosoma circulating anodic antigen(CAA),demonstrating low worm level infections(less than 5 pg/ml corresponding to probably single worm pair).One tested also CAA positive with *** indicated the presence of human anti-Schistosoma antibodies in these two CAA positive cases,haemagglutination results were ***:To pre

关键词： Schistosomiasis Transmission stop elimination Monitoring Antibody test Antigen test Circulating Anodic Antigen(CAA) Active infection