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Cd(Ⅱ)removal from amino acids-bearing wastewater:Critical evaluation and comparison of using magnetic carbon nanotubes ***

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Emerging Contaminants 2022年第1期8卷 288-298页

作者： Amjad H.El-Sheikh Amani H.Mansour Mahmoud S.Sunjuk nabil n.al-hashimi Department of Chemistry Faculty of ScienceThe Hashemite UniversityP.O.Box 330127Zarqa13133Jordan Faculty of Pharmacy The Hashemite UniversityP.O.Box 330127Zarqa13133Jordan

In the present work,two magnetic adsorbents(magnetic carbon nanotunes“MCnT”and magnetite“Mag”)were tested for cadmium“Cd(Ⅱ)”removal from water in the presence of various amino acids“AA”(aspartic acid,glutamic acid“Glu”,glycine and cysteine).MCnT was prepared by initially oxidizing carbon nanotubes(CnT)by three different methods:nitric acid method,ammonium persulphate method,Hummer's *** was then deposited on the oxidized CnT to produce the corresponding magnetic carbon nanotube adsorbents:nA-MCnT,APS-MCnT,HUM-MCnT,*** of Cd(Ⅱ)on various MCnT was investigated in the presence/absence of AA where various factors were studied:pH,oxidation method of CnT,type of AA,magnetite-to-CnT *** was found that the presence of AA significantly reduced the adsorption capacity of MCnT towards Cd(Ⅱ)at all pHs(reduction occurred from 49.8 mg g^(-1)to 12.5 mg g^(-1)).Contrary adsorption capacity of Cd(Ⅱ)on bare magnetite“Mag”was noticeably enhanced in the presence of AA(for Glu,enhancement occurred from 6.9 to 22.3 mg g^(-1)).Due to cheapness of Mag relative to CnT,it was recommended to use Mag rather than MCnT for Cd(Ⅱ)removal from AA-bearing *** that the optimum uptake method was proposed using Mag at pH 8 in the presence of Glu at concentration ratio(1:3 Cd(Ⅱ):Glu).Mag was selective towards Cd(Ⅱ)even in the presence of co-existing *** use of Mag for five cycles decreased adsorption efficiency to 80%which indicated that adsorption system was cost *** water samples gave higher adsorption of Cd(Ⅱ)in the presence of Glu than in distilled *** a conclusion,it was recommended to use Mag rather than MCnT for Cd(Ⅱ)removal in the presence of AA.

关键词： Magnetic adsorption Magnetite Magnetic carbon nanotubes Cadmium Amino acids Water treatment

Effect of co-presence of nSAIDs with cadmium:i)evaluation of nSAIDbearing water for washing Cd from soil,ii)Cd removal from nSAIDbearing water using magnetic graphene oxide

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Emerging Contaminants 2022年第1期8卷 151-161页

作者： Amjad H.El-Sheikh Haneen K.Abu-Dgham Mahmoud S.Sunjuk nabil n.al-hashimi Department of Chemistry Faculty of ScienceThe Hashemite UniversityP.O.Box 330127Zarqa13133Jordan Faculty of Pharmacy The Hashemite UniversityP.O.Box 330127Zarqa13133Jordan

Cadmium“Cd”is a toxic pollutant that may present in soil and *** work evaluates:i)the use of non-steroidal anti-inflammatory drugs“nSAIDs”-bearing water for washing soil containing Cd(Ⅱ),ii)removal of Cd(Ⅱ)from nSAID-bearing water by adsorption onto magnetic graphene oxide which can be easily separated by strong *** studied nSAIDs are aspirin,ketoprofen,ibuprofern and *** Cd(Ⅱ)-nSAIDs complexes were synthesized and characterized by *** was initially oxidized by either nitric acid,or ammonium persulphate method,or Hummer's *** was then deposited on graphene oxide to give the corresponding magnetic graphene oxides(nA-MGO,APSMGO and Hum-MGO,respectively).The effect of the following factors on Cd(Ⅱ)uptake was investigated:nSAIDs type,pH,graphene oxidation method,magnetite:graphene oxide mass ratio in the adsorbent,(Cd(Ⅱ):nSAID)molar *** Cd(Ⅱ)uptake was achieved using“magnetic graphene oxidized with ammonium persulphate where the mass ratio of magnetite to graphene oxide was 2:1”in the presence of diclofenac at *** best Cd(Ⅱ):diclofenac molar ratio was 1:*** maximum adsorption capacity of Cd(Ⅱ)was found to be 83 mg L*** regeneration of the adsorbent was possible by 0.3 M HnO3 solution and 80%of adsorption efficiency was maintained after five *** presence of coexisting ions,80%of the adsorption efficiency was *** nSAIDs-containing waters were used for washing Cd-containing soil;the maximum removal efficiencies of Cd were 18%and 16%using 5 mM diclofenac or 10 mM aspirin,*** diclofenac or aspirin-spiked real pharmaceutical wastewater gave 28%removal of *** optimum adsorption method was used for removal of Cd(Ⅱ)from diclofenac-containing soil-washing water,where two successive adsorptions were needed for complete Cd uptake.

关键词： Adsorption Cadmium Magnetic graphene oxide nSAIDs Pharmaceutical wastewater Soil washing

A new hydrophobic deep eutectic solvent composed of menthol and tris(2-ethylhexyl) phosphate for solvent bar microextraction of parabens from biological fluids

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Emerging Contaminants 2024年第2期10卷 135-145页

作者： nabil n.al-hashimi Husam Abed alfattah Khaleel I.Assaf Asma A.Fakhoury Saja H.Hamed Amjad H.El-Sheikh Khairi M.Fahelelbom The Hashemite University Faculty of Pharmaceutical SciencesDepartment of Pharmaceutical ChemistryP.O.Box 330127Zarqa13133Jordan The Hashemite University Faculty of ScienceDepartment of ChemistryP.O.Box 150459Zarqa13115Jordan al-Balqa Applied University Faculty of ScienceDepartment of Chemistry19117 Al-SaltJordan The Hashemite University Faculty of Pharmaceutical SciencesDepartment of Pharmaceutics and Pharmaceutical TechnologyP.O.Box 330127Zarqa13133Jordan al Ain University College of PharmacyDepartment of Pharmaceutical SciencesP.O.Box 64141Al AinAl AinUnited Arab Emirates

Parabens are antimicrobial preservatives with extensive applications in cosmetics,toiletries,pharmaceuticals,and *** the legitimate concerns relating to their potential to disrupt multiple endocrine functions,it becomes imperative to prioritize the development of innovative bioanalytical techniques for effectively monitoring their presence in biological *** this study,an efficient solvent bar microextraction(SBME)was established,utilizing new hydrophobic deep eutectic solvents(DEs)to determine methylparaben and propylparaben in urine and plasma *** DEs comprising menthol and tris(2-ethylhexyl)phosphate(M-TEHP)at various molar ratios were synthesized for the first time to enhance the extraction capacity and promote the eco-friendliness of the DE used as an extraction ***-transform infrared(FT-IR)and proton nuclear magnetic resonance(1H nMR)spectroscopies were employed to confirm and investigate the properties of the successful synthesis(M-TEHP)DE at a molar ratio of 1:*** synthesized DE exhibits low microbial toxicity and can be considered an eco-friendly solvent for ***,quantum-chemical calculations were utilized to predict synthesized DE's structure and interaction energy with selected *** influential operational factors of DE-SBME on the extraction efficiency(EE%)of both parabens were evaluated using response surface methodology based on central composite design,and a total of 30 extraction tests were conducted to determine the optimal *** optimized DE-SBME,in combination with HPLC-DAD,exhibited low detection limits(0.54–0.91μg L^(−1)),excellent linearity(R^(2)≥0.9993),precise results(RSDs≤7.6%),satisfactory recoveries(92–97%)and negligible matrix ***,it had remarkable effectiveness and applicability in determining selected parabens in real urine and plasma samples.

关键词： Hydrophobic deep eutectic solvent Solvent bar microextraction Parabens Response surface methodology and central composite design HPLC-DAD Urine and plasma

Deep Transfer Learning Driven Automated Fall Detection for Quality of Living of Disabled Persons

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Computers, Materials & Continua 2023年第3期74卷 6719-6736页

作者： nabil almalki Mrim M.alnfiai Fahd n.al-Wesabi Mesfer alduhayyem Anwer Mustafa Hilal Manar Ahmed Hamza King Salman Center for Disability Research RiyadhSaudi Arabia Department of Special Education College of EducationKing Saud UniversityRiyadh12372Saudi Arabia Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Computer Science College of Science&ArtsKing Khaled UniversitySaudi Arabia Department of Computer Science College of Sciences and Humanities-AflajPrince Sattam bin Abdulaziz UniversitySaudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia

Mobile communication and the Internet of Things(IoT)technologies have recently been established to collect data from human beings and the *** data collected can be leveraged to provide intelligent services through different *** is an extreme challenge to monitor disabled people from remote *** is because day-to-day events like falls heavily result in *** a person with disabilities,a fall event is an important cause of mortality and post-traumatic ***,detecting the fall events of disabled persons in smart homes at early stages is essential to provide the necessary support and increase their survival *** current study introduces a Whale Optimization.algorithm Deep Transfer Learning-DrivenAutomated Fall Detection(WOADTL-AFD)technique to improve the Quality of Life for persons with *** primary aim of the presented WOADTL-AFD technique is to identify and classify the fall events to help disabled *** attain this,the proposed WOADTL-AFDmodel initially uses amodified Squeezenet feature extractor which proficiently extracts the feature *** addition,the WOADTLAFD technique classifies the fall events using an extreme Gradient Boosting(XGBoost)*** the presented WOADTL-AFD technique,the WOA approach is used to fine-tune the hyperparameters involved in the modified Squeezenet *** proposedWOADTL-AFD technique was experimen.ally validated using the benchmark datasets,and the results confirmed the superior performance of the proposedWOADTL-AFD method compared to other recent approaches.

关键词： Quality of living disabled persons intelligent models deep learning fall detection whale optimization.algorithm

IoT-Driven Optimal Lightweight Retinanet-Based Object Detection for Visually Impaired People

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Computer Systems Science & Engineering 2023年第7期46卷 475-489页

作者： Mesfer alduhayyem Mrim M.alnfiai nabil almalki Fahd n.al-Wesabi Anwer Mustafa Hilal Manar Ahmed Hamza Department of Computer Science College of Sciences and Humanities-AflajPrince Sattam bin Abdulaziz UniversitySaudi Arabia King Salman Center for Disability Research RiyadhAl-Hayātim 16273Saudi Arabia Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Special Education College of EducationKing Saud UniversityRiyadh12372Saudi Arabia Department of Computer Science College of Science&ArtsKing Khaled UniversityAr-Riyad 12372Saudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharjSaudi Arabia

Visual impairment is one of the major problems among people of all age groups across the *** Impaired Persons(VIPs)require help from others to carry out their day-to-day *** they experience several problems in their daily lives,technical intervention can help them resolve the *** this background,an automatic object detection tool is the need of the hour to empower VIPs with safe *** recent advances in the Internet of Things(IoT)and Deep Learning(DL)techniques make it *** current study proposes IoT-assisted Transient Search Optimization with a Lightweight Retinanetbased object detection(TSOLWR-ODVIP)model to help *** primary aim of the presented TSOLWR-ODVIP technique is to identify different objects surrounding VIPs and to convey the information via audio message to *** data acquisition,IoT devices are used in this ***,the Lightweight Retinanet(LWR)model is applied to detect objects ***,the TSO algorithm is employed for fine-tuning the hyperparameters involved in the LWR ***,the Long Short-Term Memory(LSTM)model is exploited for classifying *** performance of the proposed TSOLWR-ODVIP technique was evaluated using a set of objects,and the results were examined under distinct *** comparison study outcomes confirmed that the TSOLWR-ODVIP model could effectually detect and classify the objects,enhancing the quality of life of VIPs.

关键词： Visually impaired people deep learning object detection computer vision long short-term memory transient search optimization

Deep Learning Driven Arabic Text to Speech Synthesizer for Visually Challenged People

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Intelligent Automation & Soft Computing 2023年第6期36卷 2639-2652页

作者： Mrim M.alnfiai nabil almalki Fahd n.al-Wesabi Mesfer alduhayyem Anwer Mustafa Hilal Manar Ahmed Hamza King Salman Center for Disability Research Riyadh13369Saudi Arabia Department of Information Technology College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Special Education College of EducationKing Saud UniversityRiyadh12372Saudi Arabia Department of Computer Science College of Science&Arts at MuhayelKing Khaled UniversityAbha62217Saudi Arabia Department of Computer Science College of Sciences and Humanities-AflajPrince Sattam bin Abdulaziz UniversityAl-Aflaj16733Saudi Arabia Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam bin Abdulaziz UniversityAlKharj16242Saudi Arabia

Text-To-Speech(TTS)is a speech processing tool that is highly helpful for visually-challenged *** TTS tool is applied to transform the texts into human-like ***,it is highly challenging to accomplish the TTS out-comes for the non-diacritized text of the Arabic language since it has multiple unique features and *** special characters like gemination and diacritic signs that correspondingly indicate consonant doubling and short vowels greatly impact the precise pronunciation of the Arabic ***,such signs are not frequently used in the texts written in the Arabic language since its speakers and readers can guess them from the context *** this background,the current research article introduces an Optimal Deep Learning-driven Arab Text-to-Speech Synthesizer(ODLD-ATSS)model to help the visually-challenged people in the Kingdom of Saudi *** prime aim of the presented ODLD-ATSS model is to convert the text into speech signals for visually-challenged *** attain this,the presented ODLD-ATSS model initially designs a Gated Recurrent Unit(GRU)-based prediction model for diacritic and gemination ***,the Buckwalter code is utilized to capture,store and display the Arabic *** improve the TSS performance of the GRU method,the Aquila Optimization.algorithm(AOA)is used,which shows the novelty of the *** illustrate the enhanced performance of the proposed ODLD-ATSS model,further experi-men.al analyses were *** proposed model achieved a maximum accu-racy of 96.35%,and the experimen.al outcomes infer the improved performance of the proposed ODLD-ATSS model over other DL-based TSS models.

关键词： Saudi Arabia visually challenged people deep learning Aquila optimizer gated recurrent unit

Robust Fractional-Order Proportional-Integral Observer for Synchronization of Chaotic Fractional-Order Systems

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IEEE/CAA Journal of Automatica Sinica 2019年第1期6卷 268-277页

作者： Ibrahima n’Doye Khaled nabil Salama Taous-Meriem Laleg-Kirati IEEE Computer Electrical and Mathematical Sciences and Engineering Division (CEMSE)King Abdullah University of Science and Technology (KAUST)

In this paper, we propose a robust fractional-order proportional-integral(FOPI) observer for the synchronization of nonlinear fractional-order chaotic systems. The convergence of the observer is proved, and sufficient conditions are derived in terms of linear matrix inequalities(LMIs) approach by using an indirect Lyapunov method. The proposed FOPI observer is robust against Lipschitz additive nonlinear uncertainty. It is also compared to the fractional-order proportional(FOP) observer and its performance is illustrated through simulations done on the fractional-order chaotic Lorenz system.

关键词： Chaos synchronization fractional-order chaotic systems indirect Lyapunov approach linear matrix inequality(LMI) robust proportional-integral observer design

Combined Procedure for Coronary Artery Bypass Grafting and Pulmonary Hydatid Disease

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World Journal of Cardiovascular Surgery 2016年第1期6卷 14-18页

作者： A. al Khaddour S. al hashimi n. Abbas Damascus University Hospital Damascus Syria

In this study we reported one case of combined procedure for coronary artery bypass grafting and excision of right pulmonary hydatid cyst. Concerns of possible hydatid systemic dissemination as a result of direct vascular breaches are raised. We suggest that avoidance of cardiopulmonary bypass (CPB) if that possible is beneficial for the treatment. If not possible then the excision and clearance of the hydatid cyst should be done in the first place before going on bypass.

关键词： Echinococcosis CT Scan Coronary Artery Bypass Grafting Hydatid Cyst nYHA-CCS-DM II LIMA-LAD-SV-OM-RLL-EF

Contact Stress Distribution of a Pear Cam Profile with Roller Follower Mechanism

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Chinese Journal of Mechanical Engineering 2021年第1期34卷 266-279页

作者： Louay S.Yousuf nabil Hassan Hadi Department of Mechanical Engineering San Diego State University5500 Campanile DriveSan DiegoCA 92182-1323USA Aeron autical Fngineering Department College of FngineeringUniversity of BaghdadBaghdadIraq

The problem of this paper is the high contact stress at the point of contact between the cam and the follower.A pear cam and roller follower mechanism were studied and analyzed for different position of the follower and different contact compression *** objective of this paper is to study the effect of contact compression load on the contact stress distribution of the cam profile at the point of *** different positions of the follower with the cam was considered(0°,90°,180°,and 270°).The theory of circular plate was applied to derive the analytic solution of the contact *** numerical simulation had been done using AnSYS Ver.19.2 package to determine the contact stress,while SolidWorks software was used to investigate follower displacement,velocity,and *** distinct values of the compression contact load,such as 3.121 n,6.242 n,9.364 n,and 12.485 n,were used in the numerical *** the experiment setup,a photo-elastic technique was carried out in the field of polarized light to exhibit the stress distribution on the cam *** ann.aled PSM-4 backalate material was used in the experiment *** experimen.al value of contact stress was checked and verified analytically and numerically at the point of *** innovation in this paper the use of spring-damper system which reduce the value of contact stress at the point of *** contact stress was maximum 2.136 MPa when the follower located at 270°with the cam,while the contact stress was minimum 1.802 MPa when the follower located at 180°at compression load 12.485 n.

关键词： Contact stress Compression load Bending deflection Photo-elastic technique Finite element analysis