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Deterministic and Stochastic Fractional Order Model for Lesser Date Moth

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Computer Systems Science & Engineering 2022年第2期40卷 749-764页

作者： moustafa El-shahed Asmaa M.Al-Dububan Department of Mathematics Unaizah College of Sciences and ArtsQassim UniversityP.O.Box 3771Unaizah51911Saudi Arabia Department of Mathematics Buraydah College of Sciences and ArtsQassim UniversityP.O.Box 1162Buraydah51431Saudi Arabia

In this paper,a deterministic and stochastic fractional order model for lesser date moth(LDM)using mating disruption and natural enemies is proposed and *** interaction between LDM larvae,fertilized LDM female,unfertilized LDM female,LDM male and the natural enemy is *** order to clarify the characteristics of the proposed deterministic fractional order model,the analysis of existence,uniqueness,non-negativity and boundedness of the solutions of the proposed fractional-order model are *** addition,some sufficient conditions are obtained to ensure the local and global stability of equilibrium *** occurrence of local bifurcation near the equilibrium points is investigated with the help of Sotomayor’s *** simulations are conducted to illustrate the properties of the proposed fractional order model with respect to the intrinsic growth rate of the LDM larvae,natural enemy’s mortality rate,predation rate,sex pheromone trap parameter,fractional order and environmental *** impact of mating disruption on lesser date moth is ***,a numerical approximation method is developed for the proposed stochastic fractional-order model.

关键词： Lesser date moth stochastic stability natural enemies Sotomayor’s theorem mating disruption

Constraints of Mantle and Crustal Sources Interaction during Orogenesis of Pre-and Post-collision Granitoids from the Northern Arabian-Nubian Shield:A Case Study from Wadi El-Akhder Granitoids,Southern Sinai,Egypt

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Acta Geologica Sinica(English Edition) 2021年第5期95卷 1527-1550页

作者： moustafa M.MOGAHED Khaled M.ABDELFADIL Geology Department Faculty of ScienceBenha UniversityBenha 13518Egypt Geology Department Faculty of ScienceSohag UniversitySohag 82524Egypt

The Egyptian older and younger granitic rocks emplaced during pre-and post-collision stages of Neoproterozoic Pan-African orogeny,respectively,are widely distributed in the southern Sinai Peninsula,constituting 70% of the basement *** Wadi El-Akhder,southwestern Sinai,is a mountainous terrain exposing two granitoid suites,namely the Wadi El-Akhder Older Granites(AOG)and the Homra Younger Granites(HYG).The AOG(granodiorites with subordinate tonalite compositions)have geochemical characteristics of medium-K calc-alkaline,metaluminous to mildly peraluminous granitoids formed in an island-arc environment,which are conformable with well-known Egyptian older granitoids rocks,whereas the HYG display calc-alkaline to slightly alkaline nature,peraluminous syeno-,monzogranites and alkali feldspar granites matching well those of the Egyptian younger *** respect to the AOG granitoids,the HYG granites contain lower Al_(2)O_(3),FeO^(*),MgO,MnO,CaO,TiO_(2),Sr,Ba,and V,but higher Na_(2)O,K_(2)O,Nb,Zr,Th,and *** AOG are generally characterized by enrichment in LILE and LREE and depletion in HFSE relative to N-MORB values(e.g.,negative Nb and Ta anomalies).The geochemical features of the AOG follow assimilation-fractional crystallization(AFC)trends indicative of extensive crustal contamination of magma derived from a mantle *** chemical characteristics of the AOG are remarkably similar to those of subduction-related granitoids from the ArabianNubian Shield(ANS).The compositional variations from monzogranites through syenogranites to alkali feldspar granite within HYG could not be explained by fractional crystallization *** the whole-rock composition of the HYG to melts generated by experimental dehydration melting of meta-sedimentary and magmatic rocks reveals that they appear to be derived by extended melting of psammitic and pelitic metasediments,which is similar to the most of younger granitic suites in the ANS.

关键词： older and younger granitoids mantle-crust interaction assimilation-fractional crystallization(AFC) southern Sinai Arabian-Nubian Shield

Comparison of the effect of carbon,halloysite and titania nanotubes on the mechanical and thermal properties of LDPE based nanocomposite films

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Chinese Journal of Chemical Engineering 2018年第2期26卷 428-435页

作者： Khaliq Majeed Mariam Al Ali AlMaadeed moustafa M.Zagho Center for Advanced Materials Qatar UniversityPO Box 2713DohaQatar Department of Chemical Engineering COMSATS Institute olin formation TechnologyLahorePakistan Materials Science and Technology Program Qatar UniversityPO Box 2713DohaQatar

In this study, titania nanotubes （TNTs） were prepared by hydrothermal method with the aim to compare the properties of these one-dimensional tubular nanostructures＇ reinforced nanocomposites with the carbon and halloysite nanotubes＇（CNTs and HNTs, respectively） reinforced nanocomposites. Low density polyethylene （LDPE） was used as the matrix material. The prepared nanocomposites were characterized and compared by means of their morphological, mechanical and thermal properties. SEM results showed enhanced interracial interaction and better dispersion of TNTs and HNTs into LDPE with the incorporation of a MAPE compatibilizer, however, these interactions seem to be absent between CNTs and LDPE, and the CNTs remained agglomerated. Contact angle measurements revealed that CNT filled nanocomposites are more hydrophilic than HNT composites, and less than TNT composites. CNTs provided better tensile strength and Young＇s modulus than HNT and TNT nanocomposites, a 42% increase in tensile strength and Young＇s modulus is achieved compared to LDPE. Tear strength improvement was noticed in the TNT composites with a value of 35.4 N. mm -1, compared to CNT composites with a value of 25.5 *** 1 -s- 1. All the prepared nanocomposites are more thermally stable than neat LDPE and the best improvement in thermal stability was observed for CNT reinforced nanocomposites. CNTs depicted the best improvement in tensile and thermal properties and the MAPE compatibilizer effective- ness regarding morphological, mechanical and thermal properties was only observed for TNT and HNT systems.

关键词： Hydrothermal Nanostructure Nanotube Nanocomposite Mechanical properties Thermal properties

Enhancement of Electric Conductivity in Transparent Glasse—Ceramic Nanocomposites of Bi_2O_3—BaTiO_3 Glasses

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Journal of Materials Science & Technology 2013年第12期29卷 1166-1176页

作者： A.A.Bahgat M.G.moustafa E.E.Shaisha Department of Physics Faculty of ScienceAl-Azhar University

The frequency and temperature dependent electrical conductivity measurements for heat-treated binary glass system with composition of （lO0-x）Bi203-xBaTi03 （x = 20, 30, 40 and 50, in mol%） were carried out. The glass was prepared by melt quenching technique and their corresponding glass-ceramic nanocomposites were obtained by suitable heat treatment. Nanostructured behavior and electrical properties of these glasses and their corresponding glass-ceramic nanocomposites were studied. X-ray diffraction （XRD） and differential scanning calorimetry confirmed the amorphous nature of the glasses. Moreover, XRD patterns of the samples indicate nanocrystallites embedded in the glass matrix. The Fourier transform infrared spectroscopy （FT-IR） spectral analysis showed that the band positions of glass system are within the wave number range of Bi06, Bi03 and Ti06 structural units. It is observed that the electrical conductivity is enhanced by 102-103 times in the transparent glass-ceramic nanocomposite phase. With further heat treatment, the conductivity decreased considerably in the stage of glass-ceramic nanocomposite phase as compared with the glassy phase sample. Therefore, partially devitrified phase is more suitable as cathode material in secondary batteries compared to its vitreous or fully crystalline counterpart. The conduction mechanism was confirmed to obey the adiabatic small polaron hopping （SPH）. AC conductivity measurements were performed as a function of temperature and frequency, showing a very slow increasing rate at low temperatures and then a fast rate at higher temperatures.

关键词： Barium titanat Transparent glass--ceramic nanocomposites DC electrical conductivity AC electrical conductivity Smallpolaron hopping

Quranic Script Optical Text Recognition Using Deep Learning in IoT Systems

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Computers, Materials & Continua 2021年第8期68卷 1847-1858页

作者： Mahmoud Badry Mohammed Hassanin Asghar Chandio Nour moustafa School of Engineering and Information Technology UNSW Canberra.ACTNewcastle NSW2620Australia Faculty of Computers and Information Fayoum UniversityFayoumEgypt Quaid-e-Awam University of Engineering Science and TechnologyNawabshahPakistan

Since the worldwide spread of internet-connected devices and rapid advances made in Internet of Things(IoT)systems,much research has been done in using machine learning methods to recognize IoT sensors *** is particularly the case for optical character recognition of handwritten *** text in images has several useful applications,including content-based image retrieval,searching and document *** Arabic language is one of the mostly used tongues in the ***,Arabic text recognition in imagery is still very much in the nascent stage,especially handwritten *** is mainly due to the language complexities,different writing styles,variations in the shape of characters,diacritics,and connected nature of Arabic *** this paper,two deep learning models were *** first model was based on a sequence-to-sequence recognition,while the second model was based on a fully convolution *** measure the performance of these models,a new dataset,called QTID(Quran Text Image Dataset)was *** is the first Arabic dataset that includes Arabic *** consists of 309,720 different 192×64 annotated Arabic word images,which comprise 2,494,428 characters in total taken from the Holy *** annotated images in the dataset were randomly divided into 90%,5%,and 5%sets for training,validation,and testing purposes,*** models were set up to recognize the Arabic Othmani font in the *** results show that the proposed methods achieve state-of-the-art ***,the proposed models surpass expectations in terms of character recognition rate,F1-score,average precision,and recall *** are superior to the best Arabic text recognition engines like Tesseract and ABBYY FineReader.

关键词： OCR quranic script IoT deep learning

Deterministic and Stochastic Fractional-Order Hastings-Powell Food Chain Model

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Computers, Materials & Continua 2022年第2期70卷 2277-2296页

作者： moustafa El-Shahed Asmaa M.Al-Dububan Department of Mathematics Unaizah College of Sciences and ArtsQassim UniversityUnaizah51911Saudi Arabia Department of Mathematics Buraydah College of Sciences and ArtsQassim UniversityBuraydah51431Saudi Arabia

In this paper,a deterministic and stochastic fractional-order model of the tri-trophic food chain model incorporating harvesting is proposed and *** interaction between prey,middle predator and top predator population is *** order to clarify the characteristics of the proposed model,the analysis of existence,uniqueness,non-negativity and boundedness of the solutions of the proposed model are *** sufficient conditions that ensure the local and global stability of equilibrium points are *** using stability analysis of the fractional-order system,it is proved that if the basic reproduction number R_(0)<1,the predator free equilibrium point E_(1) is globally asymptotically *** occurrence of local bifurcation near the equilibrium points is investigated with the help of Sotomayor’s *** numerical examples are given to illustrate the theoretical *** impact of harvesting on prey and themiddle predator is *** conclude that harvesting parameters can control the dynamics of the middle predator.A numerical approximation method is developed for the proposed stochastic fractional-order model.

关键词： Food chain model global dynamics stability stochastic Hastings-Powell model harvesting

Wrap choice during fundoplication

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World Journal of Gastroenterology 2019年第48期25卷 6876-6879页

作者： Simon R Bramhall moustafa M Mourad Department of Surgery The County HospitalHereford HR12ERUnited Kingdom Department of Surgery Worcester Royal InfirmaryWorcester WR51DDUnited Kingdom

Gastro-oesphageal reflux disease is an increasing health *** mainstay of treatment has conventionally been medical therapy but since the introduction of laparoscopic surgery laparoscopic anti-reflux surgery has been increasingly used for intractable symptoms or in patients unwilling to take long term *** Nissen 360 degree wrap has traditionally been considered the gold standard operation but can be associated with significant *** complications include“gas bloat”and dysphagia and can occur relatively *** modifications have been described to the original operation and some of these have been *** addition alternative wraps have been described which seem to have a reduced incidence of complications associated with their *** editorial discusses the various types of wrap that can be performed and the minimum requirements of the surgical *** evidence from a recent meta-analysis of the randomised data has suggested that an anterior wrap is associated with a lower rate of complications and gives just as good control of reflux *** advantages and disadvantages of an anterior wrap are *** lack of long term follow up data concerns some practitioners and at the moment the choice of wrap carried out still rests with the individual surgeon.

关键词： Fundoplication Wrap Laparoscopic Reflux disease Choice

Multitarget therapeutic strategies for Alzheimer's disease

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Neural Regeneration Research 2019年第3期14卷 437-440页

作者： Mostafa M.Ibrahim moustafa T.Gabr Department of Pharmacognosy Faculty of Pharmacy Mansoura University Department of Basic Pharmaceutical and Toxicological Sciences College of Pharmacy University of Louisiana at Monroe Department of Medicinal Chemistry Faculty of Pharmacy Mansoura University Department of Chemistry University of Iowa

Neurodegenerative diseases such as Alzheimer's, Huntington's and Parkinson's diseases have multifaceted nature because of the different factors contributing to their progression. The complex nature of neurodegenerative diseases has developed a pressing need to design multitarget-directed ligands to address the complementary pathways involved in these diseases. The major enzyme targets for development of therapeutics for Alzheimer's disease are cholinesterase and β-secretase enzymes. In this review, we discuss recent advances in profiling single target inhibitors based on these enzymes to multitarget-directed ligands as potential therapeutics for this devastating disease. In addition, therapeutics based on iron chelation strategy are discussed as well.

关键词： multitarget-directed ligands acetylcholinesterase β-secretase Alzheimer's disease hybridization neurodegenerative diseases tacrine brain permeability

Numerical and Experimental Analysis of A Ducted Propeller Designed by A Fully Automated Optimization Process Under Open Water Condition

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China Ocean Engineering 2015年第5期29卷 733-744页

作者：余龙 Markus DRUCKENBROD Martin GREVE 王珂琦 moustafa ABDEL-MAKSOUD State Key Laboratory of Ocean Engineering School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong University Institute for Fluid Dynamics and Ship Theory Hamburg University of Technology

A fully automated optimization process is provided for the design of ducted propellers under open water conditions, including 3D geometry modeling, meshing, optimization algorithm and CFD analysis techniques. The developed process allows the direct integration of a RANSE solver in the design stage. A practical ducted propeller design case study is carried out for validation. Numerical simulations and open water tests are fulfilled and proved that the optimum ducted propeller improves hydrodynamic performance as predicted.

关键词： ducted propeller optimum design RANSE solver automatic optimization method