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Fluid Dynamics & materials Processing 2023年第4期19卷 929-939页

作者： U.S.mahabaleshwar t.Anusha m.el Ganaoui R.Bennacer Department of mathematics Davangere UniversityShivagangothriDavangere577007India Institut universitaire de technologie de Longwy Universitéde Lorraine186 rue de LorraineCosnes et Romain54400France Lmt/ENS-Cachan/CNRS/UniversitéParis Saclay Cachan94235France

the impacts of radiation,mass transpiration,and volume fraction of carbon nanotubes on the flow of a Newtonian fluid past a porous stretching/shrinking sheet are *** this purpose,three types of base liquids are considered,namely,water,ethylene glycol and engine ***,single and multi-wall carbon nanotubes are examined in the *** overall physical problem is modeled using a system of highly nonlinear partial differential equations,which are then converted into highly nonlinear third order ordinary differential equations via a suitable similarity *** equations are solved analytically along with the corresponding boundary *** is found that the carbon nanotubes can significantly improve the heat transfer *** potential application in cutting-edge areas is also discussed to a certain extent.

关键词： Carbon nanotubes porous media newtonian fluid radiation

Benefits of using an endotracheal tube introducer as an adjunct to a macintosh laryngoscope for endotracheal intubation performed by inexperienced doctors during mechanical CPR:A randomized prospective crossover study

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World Journal of Emergency medicine 2019年第3期10卷 182-186页

作者： Hüseyin Cahit Halhalli As?m Enes ?zbek Emrah ?el?k Yavuz Y???t Serkan Yilmaz müge ?ardak Department of Emergency medicine University of Health SciencesKocaeli Derince Training and Research Hospital

Dear editor, Out-of-hospital cardiac arrest survival rates vary between 7% and 46% and are lower than those for inhospital cardiac arrests (IHCA).[1,2] therefore, efforts are being made to increase survival rates for out-ofhospital cardiac arrests (OHCA). According to advanced cardiac life support (ACLS) guidelines, out-of-hospital cardiac arrest survival rates may be increased by performing cardiopulmonary resuscitation (CPR) with minimal interruptions.[3] According to the latest ACLS, does the patient need an advanced airway.

关键词： Out-of-hospital cardiac inhospital cardiac advanced cardiac life support

SOmE OSCILLAtION CRItERIA FOR SECOND ORDER NONLINEAR FUNCtIONAL ORDINARY DIFFERENtIAL EQUAtIONS

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Acta mathematica Scientia 2007年第3期27卷 602-610页

作者： E.m.E.Zayed m.A.el-moneam mathematics Department Faculty of ScienceZagazig UniversityZagazigEgypt

the main objective of this article is to study the oscillatory behavior of the solutions of the following nonlinear functional differential equations（a（t）x＇（t））＇＋δ1p（t）x＇（t）＋δ2q（t）f（x（g（t））） = 0,for 0 ≤ to≤ t, where 51 = ：el and δ±1. the functions p,q,g ： [t0, ∞） → R, f ： R → are continuous, a（t）〉 0,p（t） ≥0,q（t）〉 0 for t ≥ to,lirn g（t） = ∞, and q is not identically zero on any subinterval of [to, ∞）. moreover, the functions q（t）, g（t）, and a（t） are continuously differentiable.

关键词： Oscillatory and nonoscillatory solutions nonlinear functional differential equations

Removal of Cesium on Polyaniline titanotungstate as Composite Ion Exchanger

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Advances in Chemical Engineering and Science 2012年第1期2卷 166-179页

作者： I.m. el-Naggar E. S. Zakaria I. m. Ali m. Khalil m. F. el-shahat 不详

Polyaniline titanotungstate (PAtiW) was synthesized by the sol-gel method. Adsorption isotherm studies of Cs+ from aqueous solution are described. elemental Composition, chemical solubility, ion-exchange capacity (IEC) and pH titration are studied. Distribution coefficients (Kd) for ten metal ions have been determined. It was found that the polyaniline titanotungstate has high affinity and high selectivity for Cs+. the material was high separation of Cs+ from other metal ions. the adsorbent capacity was determined using the Freundlich and Langmuir adsorption isotherm models. the Cs+ adsorption isotherm data fit best to the Freundlich isotherm model. the maximum Cs+ uptake of polyaniline titanotungstate was found 217 mg/g. A column tests were performed to determine the breakthrough curves with varying bed depths and flow rates in different solutions. the results show that the half breakthrough time increases proportionally with increasing bed depths. Kinetic studies for removal cesium from milk were investigated.

关键词： Synthesis Separation Polyaniline titanotungstate Cesium

Anatomical and molecular Identification of Ornamental Plant Ficus ***

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Phyton-International Journal of Experimental Botany 2023年第5期92卷 1329-1347页

作者： Abtisam Binnoubah Rim Hamdy Osama G.Ragab Ahmed m.el-taher Ahmed Abou el-Yazied Fatmah A.Safhi Hala A.elzilal Ashwaq t.Althobaiti Salha m.ALshamrani Diaa Abd el moneim Ahmed el-Banhawy Department of Botany Faculty of ScienceUniversity of SabrathaSabratha999116Libya Department of Botany Faculty of ScienceCairo UniversityGiza12111Egypt Department of Botany and microbiology Faculty of Science(Boys Branch)Al-Azhar UniversityCairo11884Egypt Department of Agricultural Botany Faculty of AgricultureAl-Azhar UniversityCairo11884Egypt Department of Horticulture Faculty of AgricultureAin Shams UniversityCairo11566Egypt Department of Biology College of SciencePrincess Nourah bint Abdulrahman UniversityRiyadh11671Saudi Arabia Department of Science and technology College of RanyahTaif UniversityTaif21944Saudi Arabia Department of Biology College of ScienceTaif UniversityTaif21944Saudi Arabia Department of Biology College of ScienceUniversity of JeddahJeddah21959Saudi Arabia Department of Plant Production(Genetic Branch) Faculty of Environmental Agricultural SciencesArish UniversityEl-Arish45511Egypt Department of Botany and microbiology Faculty of ScienceSuez Canal UniversityIsmailia41522Egypt

this present study includes twelve species that represent the Ficus genus,namely;aspera,carica,tinctoria ***,hirta,hispida,neriifolia,palmata,pumila,racemosa,septica,sur,and sycomorus,belonging to the moraceae *** species samples were collected from various locations in *** study focused on the anatomical and molecular characteristics of mature foliage *** the identification and classification of taxa are highly dependent on the anatomical features of leaves,the anatomical characteristics were recorded in the form of a comparison between the examined plants in the data *** study aims to contribute to the identification of the studied species based on the anatomical details of the matured *** characterization includes the variations in upper and lower epidermal layers that are covered by a thin or thick cuticle;the number of palisade and spongy layers;crystals;secretory elements;lithocysts;the midrib zone has parenchyma associated with mechanical tissue,vascular system,and investigation of trichomes;on the other hand,in the current study,the phylogenetic analysis was conducted by using the ItS and 5.8 S *** the analysis of all the available data,it could be stated that there is an overall agreement with the anatomical character dendrogram.

关键词： ItS trichomes leaf anatomy Ficus moraceae

electroslag Refining of CrNimoWmnV Ultrahigh-Strength Steel

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Journal of minerals and materials Characterization and Engineering 2017年第6期5卷 385-407页

作者： mohammed Ali mamdouh Eissa Hoda el Faramawy David Porter Jukka K&ouml mi m. F. el-shahat taha mattar materials Engineering and Production technology University of Oulu Oulu Finland Steel technology Department Central Metallurgical Research and Development Institute Cairo Egypt Chemistry Department Ain Shams University Cairo Egypt

Increasing demands for ultrahigh-strength steels in commercial as well as military applications have raised interest in finding alternatives to the high-cost high-alloyed steel and super-alloys currently used, e.g. the use of economic low-alloy compositions processed via low-cost air induction melting and electroslag refining (ESR). In this work the yield of alloying elements and the removal of the impurities nitrogen, sulphur and phosphorus as a result of electroslag refining (ESR) in a newly developed CrNimoWmnV ultrahigh-strength steel (UHSS) have been studied in relation to their activities in the molten metal pool. Six experimental heats of CrNimoWmnV UHSS with different chemical compositions were designed, melted in an induction furnace (IF) and refined using ESR. this was followed by hot forging of the ingots at 1100°C to 950°C. ESR using a CaF2-CaO-Al2O3 slag system led to a high yield in Cr, Ni, mo, W, mn and V, while the yield of Si is low. the desulphurization of all six UHSS grades was pronounced with most of the sulphur removed either to the slag or by gas reactions. the degree of dephosphorization was only 5% irrespective of the steel composition. On the other hand, denitrification (removal of nitrogen) was achieved. It ranged from 8% to 63% depending on the steel composition. the yield of the alloying elements and removal of impurities from the steel during ESR depends on the chemical and physical properties of the ESR slag and the activity of the elements in the molten state, taking into account elemental interactions.

关键词： Ultrahigh-Strength Steel electroslag Refining Alloying elements Impurities Activity

Impact of National Egyptian school feeding program on growth,development,and school achievement of school children

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World Journal of Pediatrics 2020年第4期16卷 393-400页

作者： A.m.metwally marwa m.el-Sonbaty L.A.el Etreby E.m.Salah el-Din N.Abdel Hamid H.A.Hussien A.m.Hassanin Z.m.monir medical Research Division Community Medicine DepartmentNational Research Centre(Affiliation ID:60014618)DokkiCairoEgypt Department of Pediatrics College of MedicineTaibah UniversityMadinahKingdom of Saudi Arabia medical Research Division Child Health DepartmentNational Research Centre(Affiliation ID:60014618)DokkiCairoEgypt Agricultural Research Centre GizaEgypt

Background School feeding program(SFP)increases access to education and to better *** study aims to evaluate the effects of SFP on physical growth,cognitive development,psychosocial behavior,and learning achievement of school *** A quasi-experimental study was *** intervention group included 903 pupils in the fifth grade receiving the school meal,while the control group included 886 pupils,matched for age and sex,without *** meal consisted of a pie made of flour fortified with vitamins A,B6,B12,C,thiamin,riboflavin,niacin,folate,calcium,iron,zinc,and *** position,nutritional status,and dietary behavior were *** tests were *** behavior was rated and educational achievement was *** hoc and independent sample t tests were used to detect the association of the studied parameters with the intake of school *** Children who took the meal had better scores on visual memory,auditory vigilance tests(9.71±2.80 vs.7.45±3.25;25.02±3.36 vs.10.82±8.92,respectively,Pthe afternoon attention and working memory test(8.20±2.21vs.7.75±3.05)(Pt less score of externalizing behavior(Pthan the control *** significant changes of children’s nutritional status were detected between the two *** meal was the main predictor of visual memory and auditory vigilance(Pthe strongest predictor of academic achievements when combined with family size and meals’frequency(Pmeal improves academic achievements of school children.

关键词： Cognition Growth Performance School feeding

electrochemical Detection of the Different Species of Levofloxacin Using PVC,Carbon Paste and Screen‑Printed electrodes:Effect of pH

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Journal of Analysis and testing 2018年第2期2卷 175-183页

作者： Nour elDin t.Abdel Ghani Fatehy m.Abdel‑Haleem Sonia mahmoud Rasha m.el Nashar Chemistry Department Faculty of ScienceCairo UniversityGizaEgypt

the zwitterionic compound,levofloxacin,was determined for the first time at different pH values in pure samples,pharmaceutical preparations and spiked serum and urine *** types of potentiometric sensors including poly(vinyl chloride)membrane electrode,carbon paste electrode and screen printed electrode,containing the ion pair levofloxaciniumphosphomolybdate as the electroactaive species,were used for this *** effect of pH is the key factor in determining the ratio of the different species that can exist in the medium(zwitterionic,monocationic,dicationic,anionic and neutral),and so it is the controller of the electrochemical *** different sensors were fully characterized and optimized in terms of composition,pH effect,selectivity,response and *** different sensors showed reliable reversibility and could be utilized for the determination of the drug in real spiked physiological fluids with reliable recovery values.

关键词： Levofloxacin Zwitterionic Poly(vinyl-chloride)(PVC)membrane electrode Carbon paste electrode(CPE) Screen-printed electrode(SPE)

Separation axioms under crossover operator and its generalized

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International Journal of Biomathematics 2016年第4期9卷 169-191页

作者： m. m. el-Sharkasy m. Shokry Department of mathematics Faculty of Science Tanta University Tanta Egypt Department of Physics and Engineering mathematicsFaculty of Engineering Tanta University Tanta Egypt

the purpose of this work is to construct a new crossover operator using the properties of DNA and RNA by using topological concepts in constructing flexible mathematical models in the field of biomathematics. Also, we investigate and study topological prop- erties of the constructed operators and the associated topological spaces of DNA and RNA. Finally we use the process of exchange for sequence of genotypes structures to construct new types of topological concepts to investigate and discuss several examples and some of their properties.

关键词： DNA and RNA genotypes topology (to, t1, t2)-crossover space.

Advance Artificial Intelligence technique for Designing Double t-Shaped monopole Antenna

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Computers, materials & Continua 2021年第12期69卷 2983-2995页

作者： el-Sayed m.el-kenawy Hattan F.Abutarboush Ali Wagdy mohamed Abdelhameed Ibrahim Department of Communications and electronics Delta Higher Institute of Engineering and TechnologyMansoura35111Egypt electrical Engineering Department College of EngineeringTaibah UniversityMedina 42353Saudi Arabia Operations Research Department Faculty of Graduate Studies for Statistical ResearchCairo UniversityGiza 12613Egypt Wireless Intelligent Networks Center(WINC) School of Engineering and Applied SciencesNile UniversityGizaEgypt Computer Engineering and Control Systems Department Faculty of EngineeringMansoura UniversityMansoura35516Egypt

machine learning(mL)has taken the world by a tornado with its prevalent applications in automating ordinary tasks and using turbulent insights throughout scientific research and design *** is a massive area within artificial intelligence(AI)that focuses on obtaining valuable information out of data,explaining why mL has often been related to stats and data *** advanced meta-heuristic optimization algorithm is proposed in this work for the optimization problem of antenna architecture *** algorithm is designed,depending on the hybrid between the Sine Cosine Algorithm(SCA)and the Grey Wolf Optimizer(GWO),to train neural networkbased multilayer Perceptron(mLP).the proposed optimization algorithm is a practical,versatile,and trustworthy platform to recognize the design parameters in an optimal way for an endorsement double t-shaped monopole *** proposed algorithm likewise shows a comparative and statistical analysis by different curves in addition to the ANOVA and *** offers the superiority and validation stability evaluation of the predicted results to verify the procedures’accuracy.

关键词： Antenna optimization machine learning artificial intelligence multilayer perceptron sine cosine algorithm grey wolf optimizer