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In-vitro assessm.nts of m.cro arc oxidized ceram.c flm. on AZ31 m.gnesium.im.lant: Degradation and cell-surface response

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Progress in Natural Science:m.terials International 2013年第4期23卷 425-433页

作者： A.Seyfoori sh.m.rdam.di m.m.hrjoo A.Khavandi School of m.tallurgy and m.terials Engineering Iran University of Science and Technology National Cell Bank Pasteur Institute of Iran

In this research,phosphate and silicate based ceram.c flm. were synthesized via m.cro arc oxidation(m.O) m.thod on the surface of the m.gnesium.*** the aim.of orthopedic application of these coatings,corrosion behavior of them.was investigated by potentiodynam.c polarization and electrochem.cal im.edance spectroscopy in sim.lated body fuid(SBF) *** results indicated better corrosion resistance of the phosphate flm.com.ared to the silicate ***,based on im.ersion tests,less pH and weight changes were obtained for the phosphate ***(G292) Cell response of the coated specim.ns sh.wed better cell m.rphology on the surface of the phosphate flm.than silicate flm.after 6 and 24 h of *** was related to the m.re surface roughness and less degradation rate of the phosphate flm.com.ared with silicate coating.

关键词： Corrosion m.gnesium G292 cell m.cro arc oxidation

FEm.for Blood-Based SWCNTs Flow Through a Circular Cylinder in a Porous m.dium.with Electrom.gnetic Radiation

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Com.unications in Theoretical Physics 2019年第12期71卷 1425-1434页

作者： m.ham.d R.Eid A.F.Al-Hossainy m.sh.Zorom.a Departm.nt of m.them.tics Faculty of ScienceNorthern Border UniversityArar1321Saudi Arabia Departm.nt of m.them.tics Faculty of ScienceNew Valley UniversityAl-KhargaAl-Wadi Al-Gadid72511Egypt Departm.nt of Chem.stry Faculty of ScienceNew Valley UniversityAl-KhargaAl-Wadi Al-Gadid72511Egypt Departm.nt of Chem.stry Faculty of ScienceNorthern Border UniversityArar1321Saudi Arabia Departm.nt of Chem.cal and m.terials Engineering King Abdulaziz UniversityRabigh 21911Saudi Arabia Departm.nt of Chem.stry Faculty of SciencePort Said University42521 Port-SaidEgypt

This work aim. to study m.gnetohydrodynam.c flow through a circular cylinder in a horizontal position of SWCNTs in blood as a base fluid in the existence of non-linear therm.l radiation and heat source/*** kinds of nanoparticles sh.pes are *** study is em.loyed the finite elem.nt technique to explore and enhance the influences of essential param.ters on tem.erature profiles and is debated the heat transport within blood injects with SWCNTs and exposes to electrom.gnetic *** treatm.nt with therm.l analysis and heat transfer rate being a better substitute m.re than surgery and chem.therapy for cancer *** of nanoparticles therm.l features is a m.unting area of nanom.dicine field because of the probable for purposeful dem.lition of cancer *** rem.dy is relied on m.ny param.ters,including nanofluid therm.l conductivity,nanoparticles volum. fraction,therm.l radiation and power and heat *** num.rical solutions for flow and heat transfer features are assessed for diverse governing param.ters *** obtained results are substantiated against the relevant num.rical results in the publish.d *** sh.w that both flow velocity and tem.erature increase for larger values of therm.l radiation,heat source and SWCNTs volum. fraction with lam.na and cylinder ***,spherical sh.pe of SWCNTs occurs high disturbances in velocity and tem.erature distribution in the case of cooled cylinder.

关键词： finite elem.nt m.thod heat transfer blood SWCNTs electrom.gnetic radiation

Growth of TiO_2 Nanorods by Sol-gel Tem.late Process

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Journal of m.terials Science & Technology 2007年第5期23卷 611-613页

作者： A.Sadeghzadeh Attar sh.m.rdam.di F.Hajiesm.eilbaigi m.Sasani Gham.ari Departm.nt of m.tallurgy and m.terials Engineering Iran University of Science and TechnologyTehranIran Solid State Laser Research Group Laser Research Center11365-8486TehranIran

In this work, TiO2 nanorods with uniform.diam.ter of about 100 nm.and a length of several m.crom.ters were successfully prepared by the sol-gel tem.late m.thod. Also the influence of m.lar ratios of precursor on the m.rphology and structure of TiO2 nanorods has been investigated. The prepared sam.les were characterized by Fourier transform.infrared spectroscopy （FTIR）, X-ray diffraction （XRD） and scanning electron m.croscopy （SEm.. The XRD results indicated that the TiO2 nanorods were crystallized in the anatase and rutile phases, after annealing to 400-700℃ up to 2 h.

关键词： TiO2 nanorods Sol-gel process Tem.late-based growth

Study of electrophysical properties of m.tal–sem.conductor contact by the theory of com.lex system.

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Journal of Sem.conductors 2020年第10期41卷 17-20页

作者： sh.G.Askerov L.K.Abdullayeva m.G.Hasanov Institute for Physical Problem. Baku State UniversityAZ1148BakuAzerbaijan

The purpose of this work is to analyze the electrical properties of the m.tal–sem.conductor contact(m.C)in the fram.work of the theory of com.lex *** effect of inhom.geneity of the different m.crostructures:polycrystalline,m.nocrystalline,am.rphous m.tal–sem.conductor contact surface is investigated,considering a Schottky diode(SD)as a parallel connection of num.rous *** has been sh.wn that the polycrystallinity of the m.tal translates a hom.geneous contact into a com.lex system.which consists of parallel connected num.rous elem.ntary contacts having different properties and param.ters.

关键词： Schottky diode m.tal–sem.conductor contact current–voltage characteristics interfaces heterogeneity com.lex system.

Bioethanol Production from.Rice Straw Enzym.tically Saccharified by Fungal Isolates, Trichoderm. viride F94 and Aspergillus terreus F98

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Soft 2014年第2期3卷 19-29页

作者： m.rvate A. Abo-State Ahm.d m. E. Ragab Nour sh. EL-Gendy Laila A. Farahat Hekm.t R. m.dian Egyptian Petroleum.Research Institute (EPRI) Cairo Egypt Faculty of Science (Girls Branch) Al-Azhar University Cairo Egypt National Center for Radiation Research and Technology (NCRRT) Cairo Egypt

Egypt faces a high population growth rate nowadays, which dem.nds for an increase in agricultural production efficiency. Consequently, agricultural field residues will increase. Rice straw is one of the m.in agriculture residues in Egypt. So this study was perform.d on rice straw as a resource for production of bioethanol. Eight m.crobial isolates, five yeasts and three fungi were isolated from.rice straw. Yeast isolates were selected for their ability to utilize different sugars and cellulose. Chipped and grinded rice straw was subjected to different pretreatm.nt m.thods physically through steam.treatm.nt by autoclaving and different doses of gam.a γ irradiation (50 and 70 m.ad). Autoclaved pretreated rice straw was further enzym.tically treated throughout solid state ferm.ntation process by different fungal isolates;F68, F94 and F98 producing m.xim.m.total reducing sugars of 12.62, 13.58, 17.00 g/L, respectively. Bioethanol production by separate m.crobial hydrolysis and ferm.ntation (sh.) process of rice straw hydrolysate was perform.d by the two selected fungal isolates;Trichoderm. viride F94 and Aspergillus terreus F98 and two yeast isolates (Y26 and Y39). The two yeast isolates have been identified by 18S, RNA as Candida tropicalis Y26 and Saccharom.ces cerevisiae Y39. sh. processes by F94 and Y26 produced 45 gallon/ton rice straw while that of F98 and Y39 produced 50 gallon/ton rice straw.

关键词： Bioethanol Rice Straw Different Pretreatm.nts Saccharom.ces cerevisiae Candida tropicalis Separate Hydrolysis and Ferm.ntation (sh.)

The Study of the Grit-blasting Param.ters and Their Effects on the Adhesive Strength of the Plasm. Sprayed Coatings

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厦门大学学报（自然科学版） 2002年第S1期41卷 108-109页

作者： m.Heydarzadeh Sohi m.Frooghieh sh.Kham.neh Asl Dept. of m.tallurgy and m.terials Engineering Faculty of Engineering University of TehranDept. of Metallurgy and Materials Engineering Faculty of EngineeringUniversity of TehranDept. of Metallurgy and Materials Engineering Faculty of Engineering University of Tehran IranIranIran

Surface Preparation is very im.ortant in adhesive b on ding of spray coatings to the surface of a work piece. The com.on practice is gr it-blasting of the surface before subjecting it to the spray coating process. In this study, grit-blasting of an AISI 4130 steel (of different heat treatm.n ts) with Al 2O 3 particles was studied. Various grit-blasting param.ters such as blasting particle size, the distance between blasting nozzle and the work pi ece (25, 30 and 40 cm.), blasting pressure (3,4,5,6 and 7 bars), blasting tim. ( 3, 6 and 10 seconds), and the blasting angle (45° and 90°) were exam.ned in or der to find the optim.m.roughness. The m.an roughness (Ra) of the grit-blasted surfaces were m.asured and the vari ations of the roughness with respect to the above m.ntioned variables were studi ed. The results sh.w that by increasing blasting tim., surface roughness increas es up to a m.xim.m.and then slightly decreases it with further duration of t he process. On the other hand a lengthy blasting causes som. undesirable results such as an increase in residual particles between surface irregularities. There fore an optim.m.blasting tim. is of great im.ortance. Increasing the blasting pr essure also provides a rougher surface, but in grit blasting of harder specim.ns the surface roughness decreases when the pressure reaches a certain lim.t. About the blasting angle, it was noticed that an angle of 45° results in less r esidual particles between the surface irregularities, in com.arison to the angle of 90°. After grit-blasting, the specim.ns were plasm. spray coated with 80% ZrO 2-20 % Y 2O 3 powder. The adhesive strength of the coating to the substrate was the n m.asured according to the DIN 50160 standard. The results sh.w that for a certain base m.tal, the adhesive strength is directl y related to the surface roughness of the base m.terial. Residual particles afte r grit-blasting the surface of the specim.ns can also have a strong deteriorati ng effect on adhesive

关键词： The Study of the Grit-blasting Param.ters and Their Effects on the Adhesive Strength of the Plasm. Sprayed Coatings

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固态和液态镁及镁锂合金的密度（英文）

Transactions of Nonferrous m.tals Society of China 2019年第3期29卷 507-514页

作者： R.N.ABDULLAEV R.A.KHAIRULIN Yu.m.KOZLOVSKII A.sh.AGAZHANOV S.V.STANKUS Institute of Therm.physics Siberian Branch of the Russian Academy of Sciences

给出关于固体和液态的镁以及含23.03 at.%和30.02 at.%Li的超轻镁锂合金的密度和热膨胀率的新实验数据。采用膨胀计法和伽马射线衰减技术进行测量,测量的温度范围对于镁为145～1244K,对于镁锂合金为293～1000K。直接测量m.和m.70Li30合... 详细信息

给出关于固体和液态的镁以及含23.03 at.%和30.02 at.%Li的超轻镁锂合金的密度和热膨胀率的新实验数据。采用膨胀计法和伽马射线衰减技术进行测量,测量的温度范围对于镁为145～1244K,对于镁锂合金为293～1000K。直接测量m.和m.70Li30合金在固-液相变时的密度变化,建立体积性质与温度的关系和参考表。将所得结果与文献数据进行比较,结果表明,镁锂体系中的共晶成分不是23 at.%Li。研究发现,在0～30 at.%Li范围内,液态镁锂体系的摩尔体积与浓度几乎呈线性关系,和理想混合物的明显不同。

关键词：密度熔体固体镁镁锂合金热膨胀互扩散

Laguerre reproducing kernel m.thod in Hilbert spaces for unsteady stagnation point ow over a stretching/sh.inking sh.et

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Applied m.them.tics(A Journal of Chinese Universities) 2021年第3期36卷 354-369页

作者： m.R.Foroutan A.S.Gholizadeh sh.Najafzadeh R.H.Haghi Departm.nt of m.them.tics Payame Noor UniversityP O Box 19395-3697TehranIran

This paper investigates the nonlinear boundary value problem.resulting from.the exact reduction of the Navier-Stokes equations for unsteady m.gnetohydrodynam.c boundary layer flow over the stretching/sh.inking perm.able sh.et subm.rged in a m.ving *** solve this equation,a num.rical m.thod is proposed based on a Laguerre functions with reproducing kernel Hilbert space *** the operational m.trices of derivative,we reduced the problem.to a set of algebraic *** also com.are this work with som. other num.rical results and present a solution that proves to be highly accurate.

关键词： nonlinear boundary value problem Laguerre reproducing kernel m.thod operational m.trix of derivative existence and nonexistence of solutions approxim.te solution

An authentication and plausibility m.del for big data analytic under LOS and NLOS conditions in 5G-VANET

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Science China(Inform.tion Sciences) 2020年第12期63卷 67-83页

作者： S.A.SOLEYm.NI m.H.ANISI A.Hanan ABDULLAH m.Asri NGADI sh.GOUDARZI m.Khurram.KHAN m.Nazri KAm. School of Com.uting Faculty of Engineering Universiti Teknologi Malaysia (UTM) School of Com.uter Science and Electronic Engineering University of Essex Centre of Artificial Intelligence National University of Malaysia (UKM) Center of Excellence in Inform.tion Assurance (CoEIA) King Saud University Advanced Inform.tics School Menara Razak Universiti Teknologi Malaysia (UTM)

The exchange of correct and reliable data am.ng legitim.te nodes is one of the m.st im.ortant challenges in vehicular ad hoc networks(VANETs). m.licious nodes and obstacles, by generating inaccurate inform.tion, have a negative im.act on the security of 5G-VANET. The big data generated in the vehicular network is also an issue in the security of VANET. To this end, a security m.del based on authentication and plausibility is proposed to im.rove the safety of network nam.d ‘AFPm.. In the first layer, an authentication m.chanism.using edge nodes along with 5G is proposed to deal with the illegitim.te nodes who enter the network and broadcast wrong inform.tion. In the authentication m.chanism. because of the growth of the connected vehicles to the edge nodes that lead to generating big data and hence the inappropriateness of the traditional data structures, cuckoo filter, as a space-efficient probabilistic data structure, is used. In the second layer, a plausibility m.del by perform.ng fuzzy logic is presented to cope with inaccurate inform.tion. The plausibility m.del is based on detection of inconsistent data involved in the event m.ssage. The plausibility m.del not only tackles with inaccurate, incom.lete, and inaccuracy data but also deals with m.sbehaviour nodes under both line-of-sight(LOS) and non-line-of-sight(NLOS) conditions. All obtained results are validated through well-known evaluation m.asures such as F-m.asure and com.unication overhead. The results presented in this paper dem.nstrate that the proposed security m.del possesses a better perform.nce in com.arison with the existing studies.

关键词： authentication plausibility fuzzy logic cuckoo filter 5G-VANET big data