检索结果-南通市图书馆

Clean Energy 2023年第3期7卷 654-670页

作者： Saad A.El-Sayed mohamed A.Ismail mohamed E.mostafa Emad H.Noseir Tarek m.Khass mechanical Power Engineering Department Faculty of EngineeringZagazig UniversityAl-SharkiaEgypt mechanical Engineering Department College of EngineeringKing Faisal UniversityAl-AhsaSaudi Arabia Environmental Engineering Department Faculty of EngineeringZagazig UniversityAl-SharkiaEgypt

This study examines the large amount of agricultural waste produced in Egypt between 2010 and 2019 by analysing data from various departments within the Agriculture *** also provides a comprehensive database on the biomass available from agricultural waste in Egypt and its potential applications for producing power,heat and chemical *** biomass-pyrolysis systems powered by solar energy are used,research demonstrates the potential to convert agricultural waste into a variety of chemical *** approach utilizes solar energy,a clean and renewable source,and has wide-ranging industrial and power generation *** Egypt’s reliance on agriculture,the country currently utilizes little biomass for energy production and has not previously used it as a source for creating chemical products,which could potentially save on the imported oil used in these *** findings of the study are graphically presented using histograms,pie charts,*** overall production of residues reached the 30-mt level in *** it contains the most rice-cultivated land,Dakahlia(Lower Egypt region)produces the highest percentage of the total residue(37.17%).Qena governorate(Upper Egypt region)produces 1.14 metric tons of residues,with sugarcane accounting for 20.3%of the total.

关键词： biomass agro-residue solar radiation pyrolysis chemical products sustainability

Power Quality Improvement Using ANN Controller For Hybrid Power Distribution Systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Automation & Soft Computing 2023年第6期36卷 3469-3486页

作者： Abdul Quawi Y.mohamed Shuaib m.manikandan B.S.Abdur Rahman Crescent Institute of Science and Technology A Deemed To Be UniversityChennaiTamil Nadu600048India Jyothishmathi Institute of Technology and Science KarimnagerTelangana505481India

In this work,an Artificial Neural Network(ANN)based technique is suggested for classifying the faults which occur in hybrid power distribution ***,which is generated by the solar and wind energy-based hybrid system,is given to the grid at the Point of Common Coupling(PCC).A boost converter along with perturb and observe(P&O)algorithm is utilized in this system to obtain a constant link *** contrast,the link voltage of the wind energy conversion system(WECS)is retained with the assistance of a Proportional Integral(PI)*** grid synchronization is tainted with the assis-tance of the d-q *** the analysis of faults like islanding,line-ground,and line-line fault,the ANN is *** voltage signal is observed at the PCC,and the Discrete Wavelet Transform(DWT)is employed to obtain different *** on the collected features,the ANN classifies the faults in an effi-cient *** simulation is done in mATLAB and the results are also validated through the hardware *** fault analysis is carried out and the results are compared with the existing ***,the Total harmonic distortion(THD)is lessened by 4.3%by using the proposed methodology.

关键词： Artificial neural network discrete wavelet transform hybrid power distribution system power quality power quality disturbances

Homotopy Analysis method for Solving Biological Population model

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2011年第11期56卷 797-800页

作者： A.A.m.Arafa S.Z.Rida H.mohamed Department of mathematics Faculty of ScienceSouth Valley University

In this paper,the homotopy analysis method (HAm) is applied to solve generalized biological *** fractional derivatives are described by Caputo's *** method introduces a significant improvementin this field over existing *** obtained using the scheme presented here agree well with the analyticalsolutions and the numerical results presented in Ref.[6].However,the fundamental solutions of these equations stillexhibit useful scaling properties that make them attractive for applications.

关键词： biological populations model fractional calculus homotopy analysis method mittag-Leffier function

Study of Thermal Reactivity and Kinetics of HmX and Its PBX by Different methods

在线全文

学校读者我要写书评

暂无评论

火炸药学报 2017年第2期40卷 24-32页

作者： mohamed Abd-Elghany Thomas m.Klapotke Ahmed Elbeih Saeed Hassanein Tamer Elshenawy Department Chemie Ludwig-Maximilians Universitat Munchen 81377 Munchen Germany military Technical College Kobry Elkobbah Cairo Egypt Technical Research Center Cairo Egypt

Vacuum Stability Test(VST)was used to determine the thermal behavior and kinetic parameters of 1,3,5,7-tetranitro-1,3,5,7-tetrazocine(HmX)and its mixture with hydroxyl-terminated polybutadiene(HTPB)as a binder coded as HmX/*** fitting and isoconversional method were applied to determine the kinetic parameters based on VST *** comparison,non-isothermal thermogravimetry analysis data(TGA)was also used to calculate the kinetic parameters by using Kissinger,OFW(Ozawa,Flynn,and Wall)and KAS(Kissinger-Akahira-Sunose)*** Kinetics and Technology Solution(AKTS)software was also used to determine the decomposition kinetics of the studied *** Scanning Calorimetry(DSC)was employed to determine the decomposition heat flow properties of the studied *** show that the activation energies obtained using VST results is 360.1kJ/mol for pure HmX and 186.9kJ/mol for HmX/*** activation energies obtained by the three different methods using TGA results are in the range of 360-368kJ/mol for pure HmX and 190-206kJ/mol for HmX/*** is concluded that values of kinetic parameters obtained by VST are close to that obtained by the different techniques using TG/DTG *** onset decomposition peak of HmX/HTPB is lower than that of HmX where the HTPB binder has negative effect on the thermal stability of *** results of all the applied techniques prove that HmX/HTPB has lower activation energy and heat release than the pure *** polymeric matrix has negative effect on the kinetic parameters of HmX.

关键词： HmX HmX/HTPB 火炸药质量管理研究工作 PBX

Geochemistry of island arc assemblage in the Eastern Desert of Egypt and the role of Pan-African magmatism in crustal growth of the Arabian–Nubian Shield:A review

在线全文

学校读者我要写书评

暂无评论

Acta Geochimica 2024年第3期43卷 588-622页

作者： Abdel-Aal mAbdel-Karim mohamed mHamdy Adel A.Surour Geology Department Faculty of ScienceZagazig UniversityZagazig 44519Egypt Geology Department Faculty of ScienceTanta UniversityTanta 31527Egypt Department of Geological Sciences Faculty of ScienceNew Galala City 43511Egypt Geology Department Faculty of ScienceCairo UniversityGiza 12613Egypt

Neoproterozoic island arc assemblage of the Arabian–Nubian Shield(ANS)in the Eastern Desert(ED)of Egypt comprises juvenile suites of metavolcanics(mV),large amounts of meta-sedimentary rocks(mS),and voluminous metagabbros-diorites(mGD)and syn-tectonic intrusions of older granitoids(OG).We report here the updates of these four rock units in terms of classification,distribution,chemical characteristics,geodynamic evolution,metamorphism,and *** addition,we discuss these integrated data to elucidate a reasonable and reliable model for crustal evolution in the *** main features of these rock units indicate their relation to each other and the geodynamic environment dominated by early immature oceanic island arcs to primitive continental *** information of the island arc metavolcanic and plutonic rocks(gabbros,diorites,tonalites,and granodiorites)furnish evidence of the genetic *** include proximity and a coeval nature in the field;all protolith magmas are subalkaline in nature following calc-alkaline series with minor tholeiitic affinities;common geochemical signature of the arc rocks and subduction-related magmatism;their similar enrichment in LREEs;and similar major element compositions with mafic melts derived from metasomatized mantle *** volcano-sedimentary and the OG rocks underwent multiphase deformation events whereas the mGD complexes deformed *** on the magmatic,sedimentological,and metamorphic evolutions constrained by geochronological data as well as the progressive evolutionary trend from extensional to compressional regimes,a possible gradual decrease in the subducted slab dip angle is the most infl uential in any geodynamic model for arc assemblage in the ED of Egypt.

关键词： Island arc assemblage magmatism Crustal growth Neoproterozoic Arabian–Nubian Shield Eastern Desert Egypt

Control of purity and entanglement for two spatially two-separated qubits via phase damping

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2012年第10期21卷 115-121页

作者： A.S.F.Obada H.A.Hessian A.B.A.mohamed m.Hashem Faculty of Science Al-Azhar UniversityNasr CityCairoEgypt Faculty of Science Assiut UniversityAssiutEgypt Faculty of Science Al-Baha UniversityAl-BahaSaudi Arabia Al-Aflaj Community College Salman Bin Abdulaziz University Al-AflajSaudi Arabia

Control of purity and entanglement of two two-qubits dispersively coupled to a field with a reservoir are *** the qubits are entangled,while the field is either in a coherent state or a statistical mixture of two coherent *** an alternative entanglement measure we calculate the negativity of the eigenvalues of the partially transposed density matrix.A measure related to the mutual entropy,namely the index of entropy,is employed to measure the *** results agree well with the *** is found that the entanglement and purity have strong sensitivity to phase *** asymptotic behaviour of the states of the field,the two two-qubits,and the total system fall into mixed states.

关键词： entanglement phase damping purity separated qubits

Integrated Use of Organic and Bio-fertilizers to Improve Yield and Fruit Quality of Olives Grown in Low Fertility Sandy Soil in an Arid Environment

在线全文

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2023年第6期92卷 1813-1829页

作者： Bassam F.Alowaiesh m.m.Gad mohamed Saleh m.Ali Biology Department College of ScienceJouf UniversitySakaka72341Saudi Arabia Horticulture Department Faculty of AgricultureZagazig UniversityZagazig44511Egypt Horticulture Department (pomology)Faculty of AgricultureSuez Canal UniversityIsmailia41522Egypt

Olive productivity should be improved through stimulating nutrition,particularly under poor fertility ***,the objective of this study was to assess the efficacy of applying organic and bio-fertilizers on the physiological growth,yield and fruit quality of olive trees under newly reclaimed poor-fertility sandy soil in an arid *** a field experiment carried out at El-Qantara,North Sinai,Egypt over two consecutive seasons(2019-2020 and 2020-2021),olive Kalamata trees were evaluated under three organic fertilizer treatments alone or in combination with three bio-fertilizers *** fertilizer was applied as goat manure(16.8 kg/tree/year),or olive pomace(8.5 kg/tree/year)in mid-December of each season *** *** bio-fertilizers were applied as N-fixing bacteria(150 g/tree)was inculated in early march of each season,or amino acid mixture(1.5%)was applied three times,at 70%of full bloom,21 days after full bloom,and a month later in comparison to a non-fertilized trees(control).The cultivar used was Kalamata,a dual-purpose cultivar for oil and table olives whose value increases when processed as table *** results indicated that the goat manure followed by olive pomace significantly enhanced photosynthetic pigments(chlorophyll a,b,and carotenoids),leaf mineral contents(N,P,K,Ca,mg and Fe),tree canopy volume,number of flowers per inflorescence,number of inflorescences per shoot,initial fruit set,fruit *** fruit quality,fruit length and width,fruit weight,and total fruit yield was increased compared to the non-fertilized ***,The bio-fertilizer N-fixing bacteria followed by the amino acid mixture significantly improved all of the aforementioned ***,it is recommended,both environmentally and economically to utilize organic and bio-fertizers,particularly goat manure combined with N-fixing bacteria,in low-fertility soil to sustain olive production as well as reducing mineral ferti

关键词： Organic and bio-fertilizers olives kalamata vegetative growth leaf mineral contents fruit quality

SUBORDINATION PROPERTIES OF mULTIVALENT FUNCTIONS INVOLVING AN EXTENDED FRACTIONAL DIFFERINTEGRAL OPERATOR

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta mathematica Scientia 2014年第2期34卷 367-379页

作者： mohamed K.AOUF Teodor BULBOACA Rabha m.EL-ASHWASH Department of mathematics Faculty of ScienceMansoura University Faculty of mathematics and Computer Science Babes-Bolyai University

The object of this article is to investigate inclusion, radius, and other various properties of subclasses of multivalent analytic functions, which are defined by using an extended version of the Owa-Srivastava fracti... 详细信息

关键词： Analytic functions p-valent functions meromorphic functions differintegraloperator differential subordination

Reduced Differential Transform method for Solving Nonlinear Biomathematics models

在线全文

学校读者我要写书评

暂无评论

Computers, materials & Continua 2019年第9期61卷 979-994页

作者： K.A.Gepreel A.m.S.mahdy m.S.mohamed A.Al-Amiri Department of mathematics Faculty of ScienceTaif UniversityTaif26571Saudi Arabia Department of mathematics Faculty of ScienceZagazig UniversityZagazig44519Egypt Department of mathematics Faculty of ScienceAl-Azher UniversityNasr CityCairo11884Egypt Department of mathematics Faculty of ScienceBisha UniversityBisha61922Saudi Arabia

In this paper,we study the approximate solutions for some of nonlinear Biomathematics models via the e-epidemic SI1I2R model characterizing the spread of viruses in a computer network and SIR childhood disease *** reduced differential transforms method(RDTm)is one of the interesting methods for finding the approximate solutions for nonlinear *** apply the RDTm to discuss the analytic approximate solutions to the SI1I2R model for the spread of virus HCV-subtype and SIR childhood disease *** discuss the numerical results at some special values of parameters in the approximate *** use the computer software package such as mathematical to find more iteration when calculating the approximate *** results and discussed quantitatively are presented to illustrate behavior of the obtained approximate solutions.

关键词： Reduced differential transforms method nonlinear biomathematics models SI1I2R model SIR model analytic approximate solutions qualitative analysis stability and equilibrium.

Assessing the Performance of Some Ranked Set Sampling Designs Using Hybrid Approach

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, materials & Continua 2021年第9期68卷 3737-3753页

作者： mohamed.A.H.Sabry Ehab m.Almetwally Hisham m.Almongy Gamal m.Ibrahim Faculty of Graduate Studies for Statistical Research Cairo UniversityGiza12613Egypt Faculty of Business Administration Delta University of Science and TechnologyMansoura35511Egypt Department of Statistics Delta University for Science and TechnologyMansouraEgypt High Institute for management Sciences Belqas35511Egypt

In this paper,a joint analysis consisting of goodness-of-fit tests and markov chain monte Carlo simulations are used to assess the performance of some ranked set sampling *** markov chain monte Carlo simulations are conducted when Bayesian methods with Jeffery’s priors of the unknown parameters of Weibull distribution are used,while the goodness of fit analysis is conducted when the likelihood estimators are used and the corresponding empirical distributions are *** ranked set sampling designs considered in this research are the usual ranked set sampling,extreme ranked set sampling,median ranked set sampling,and neoteric ranked set sampling *** intensive monte Carlo simulation study is conducted using Lindley’s approximation algorithm to compute the different designs’-based *** study showed that the dependent design“neoteric ranked set sampling design”is superior to other ranked set designs and the total relative efficiency is higher than the other designs’total relative efficiency.

关键词： Goodness of fit ranked set sampling Weibull distribution Bayesian estimation Lindley’s approximation neoteric ranked set sampling design