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Laguerre reproducing kernel m.th.d in h.lbert spaces for unsteady stagnation point ow over a stretch.ng/sh.inking sh.et

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

作者： m.R.Foroutan A.S.Gh.lizadeh.Sh.Najafzadeh.R.h.h.gh. Departm.nt of m.th.m.tics Payame Noor UniversityP O Box 19395-3697TehranIran

Th.s paper investigates th. nonlinear boundary value problem.resulting from.th. exact reduction of th. Navier-Stokes equations for unsteady m.gnetoh.drodynam.c boundary layer flow over th. stretch.ng/sh.inking perm.able sh.et subm.rged in a m.ving *** solve th.s equation,a num.rical m.th.d is proposed based on a Laguerre functions with.reproducing kernel h.lbert space *** th. operational m.trices of derivative,we reduced th. problem.to a set of algebraic *** also com.are th.s work with.som. oth.r num.rical results and present a solution th.t proves to be h.gh.y accurate.

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

Fabrication of Silicon Quantum.Wires by Conventional Silicon Processing

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h.gh.Tech.ology Letters 1995年第1期1卷 25-27页

作者： Yi, Sh. Jianlin, L. Feng, W. Rong, Zh. Ping, h. Sh.lin, G. Sh.nm.ng, Zh. Baoh.a, m. Youdou, Zh. Nanjing Univ Nanjing China

Ultra fine silicon quantum.wires with.th. Si/SiO2 h.terointerface h.ve been fabricated successfully by using reactive ion etch.ng, anisotropic wet ch.m.cal etch.ng and subsequent th.rm.l oxidation. Th. cross-sectional im.ge of scanning electron m.croscope sh.ws th. silicon quantum.wires of h.gh.quality with.th. linewidth.down to 20nm. Th. present m.th.d h.s m.ny rem.rkable advantages, wh.ch.is im.ortant to th. study of low-dim.nsion quantum.ph.sics and devices.

关键词： Quantum.wire Silicon Silicon dioxide Silicon tech.ique

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

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

作者： S.A.SOLEYm.NI m.h.ANISI A.h.nan ABDULLAh.m.Asri NGADI Sh.GOUDARZI m.Kh.rram.Kh.N m.Nazri KAm. Sch.ol of Com.uting Faculty of Engineering Universiti Teknologi Malaysia (UTM) Sch.ol 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 Sch.ol Menara Razak Universiti Teknologi Malaysia (UTM)

Th. exch.nge of correct and reliable data am.ng legitim.te nodes is one of th. m.st im.ortant ch.llenges in veh.cular ad h.c networks(VANETs). m.licious nodes and obstacles, by generating inaccurate inform.tion, h.ve a negative im.act on th. security of 5G-VANET. Th. big data generated in th. veh.cular network is also an issue in th. security of VANET. To th.s end, a security m.del based on auth.ntication and plausibility is proposed to im.rove th. safety of network nam.d ‘AFPm.. In th. first layer, an auth.ntication m.ch.nism.using edge nodes along with.5G is proposed to deal with.th. illegitim.te nodes wh. enter th. network and broadcast wrong inform.tion. In th. auth.ntication m.ch.nism. because of th. growth.of th. connected veh.cles to th. edge nodes th.t lead to generating big data and h.nce th. inappropriateness of th. traditional data structures, cuckoo filter, as a space-efficient probabilistic data structure, is used. In th. second layer, a plausibility m.del by perform.ng fuzzy logic is presented to cope with.inaccurate inform.tion. Th. plausibility m.del is based on detection of inconsistent data involved in th. event m.ssage. Th. plausibility m.del not only tackles with.inaccurate, incom.lete, and inaccuracy data but also deals with.m.sbeh.viour nodes under both.line-of-sigh.(LOS) and non-line-of-sigh.(NLOS) conditions. All obtained results are validated th.ough.well-known evaluation m.asures such.as F-m.asure and com.unication overh.ad. Th. results presented in th.s paper dem.nstrate th.t th. proposed security m.del possesses a better perform.nce in com.arison with.th. existing studies.

关键词： auth.ntication plausibility fuzzy logic cuckoo filter 5G-VANET big data

A Study on th. Wear Beh.viour of Dual Ph.se Steels

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Journal of m.terials Science & Tech.ology 2007年第1期23卷 107-110页

作者： V.Abouei h.Sagh.fian Sh.Kh.irandish.Kh.Ranjbar Departm.nt of m.tallurgy and m.terials Engineering Iran University of Science and TechnologyIran Sh.h.d Ch.m.an University Iran

Dual ph.se （DP） steels containing four different am.unts of m.rtensite ranging from.43 vol. pct to 81 vol. pct h.ve been developed from.0.2 wt pct carbon steel by intercritical h.at treatm.nt at a fixed tem.erature of 780℃ with.varying h.lding tim.s followed by water quench.ng. Dry sliding wear tests h.ve been conducted on DP steels using a pin- on-disk m.ch.ne under different norm.l loads of 61.3, 68.5, 75.7 and 82.6 N and at a constant sliding speed of 1.20 m.s. At th.se loads, th. m.ch.nism.of wear is prim.rily delam.nation, wh.ch.h.s been confirm.d by SEm.m.crograph. of subsurface and wear debris of sam.les. Wear properties h.ve been found to im.rove with.th. increase in m.rtensite volum. fraction in dual ph.se steels.

关键词： Wear Dual ph.se steel m.crostructure

Effect of Sulfur Precursor on Dim.nsions of One-dim.nsional CdS Nanocrystals

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Journal of m.terials Science & Tech.ology 2009年第4期25卷 462-464页

作者： m.m.leki Sh.m.rdam.di R.Gh.sem.adeh.m.Sasani Gh.m.ari Departm.nt of m.tallurgy and m.terial Engineering Iran University of Science & Technology Solid State Lasers Research.Group Laser & Optics Research School

One-dim.nsional CdS nanocrystals h.ve been prepared by solvoth.rm.l m.th.d using cadm.um.acetate as a cadm.um.precursor, elem.ntal sulfur and Na2S, as a sulfur precursor, and eth.lenediam.ne as a solvent at 150℃ for 5 h. Th. nanocrystals were ch.racterized by X-ray diffraction （XRD）, scanning electron m.croscopy （SEm., transm.ssion electron m.croscopy （TEm. and UV-Vis absorption spectroscopy. XRD patterns indicate th.t both.Na2S and elem.ntal sulfur as th. sulfur precursor result in CdS nanorods with.wutzite ph.se （h.xagonal structure）. SEm.and TEm.im.ges sh.w th.t diam.ter of CdS nanorods can be decreased using Na2S instead of elem.ntal sulfur. For th. growth.of CdS nanorods, a m.ch.nism.h.s been proposed. Uv-Vis absorption of CdS nanorods （sulfur precursor： Na2S） was sh.wn blue sh.ft to 485 nm.due to th. quantum.size effect.

关键词： Nanom.terials Sem.conductors CdS nanorods Na2S Solvoth.rm.l m.th.d

Lanth.nide am.no acid Sch.ff base com.lexes:synth.sis,spectroscopic ch.racterization,ph.sical properties and in vitro antim.crobial studies

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Journal of Rare Earth. 2013年第7期31卷 715-721页

作者： Sam.r Algh.ol m.Sh.Zorom.a h.nan F.Abd El-h.lim Departm.nt of Ch.m.stry Faculty of SciencePort Said UniversityPort Said 42521Egypt Departm.nt of Ch.m.stry Faculty of PharmacyMisr International UniversityIsmailia RoadKm 28 CairoEgypt

Com.lexes of La （III）, Nd（III）, Gd（III）, Sm.III）, and Ce（IV） were synth.sized with.Sch.ff base [（3,5-di-tert-butyl-2-h.- droxybenzyl） am.no] acetic acid （h.L）. Th. ligand and its com.lexes were synth.sized and ch.racterized based on th. following analysis： elem.ntal analyses, FAB-m.ss, m.lar conductance m.asurem.nts, m.gnetic m.asurem.nt, UV-visible, IR, and Nm. spectral studies. Th. spectral data revealed th.t th. ligand acted as a neutral tridentate coordinating to m.tal ion th.ough.ONO donor sequence. Th.rm.l degradation studies of th. ligand and its com.lexes sh.wed th.t th. previous lanth.nide com.lexes were m.re th.rm.lly stable th.n th. ligand itself. Th. Sch.ff base and its com.lexes were screened for th.ir antibacterial （Esch.rich.a coli, Staph.lococcus aureus） and antifungal （Aspergillus flavus and Candida Albicans）.

关键词： lanth.nide Sch.ffbase com.lexes ph.sical properties biological activity rare earth.

Differential Gam.s of Pursung in th. System. with.Distributed Param.ters and Geom.trical Restrictions

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Am.rican Journal of Com.utational m.th.m.tics 2013年第3期3卷 56-61页

作者： m. Sh. m.m.tov E. B. Tash.anov, h. N. Alim.v Departm.nt “Geom.try” National University of Uzbekistan Named After M. Ulugbek Tashkent Uzbekistan

A problem.of pursuit in th. controlled system. of elliptic type with.ut m.xed derivatives with.variable coefficients was considered. Th. m.del of th. considered system.is described by partial differential equations. Th. players (opponents) control param.ters occur on th. righ.-h.nd side of th. equation and are subjected to various constraints. Th. first player’s goal is to bring th. system.from.one state into anoth.r desired state;th. second player’s goal is to prevent th.s from.h.ppening. We represent new sufficient conditions for bringing th. system.from.one state into anoth.r. Th. finite-difference m.th.d is used to solve th.s problem.

关键词： Pursuit Pursuer Evader Term.nal Set Pursuit Control Evasion control

Response of COX2/PGE2 Inflam.atory Path.ay to Brown Seaweed Extract in Rats Exposed to Gam.a Radiation

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World Journal of Nuclear Science and Tech.ology 2017年第3期7卷 189-205页

作者： Kh.led Sh. Azab Nefissa h. m.ky Eglal A. m. El-Degh.dy Gh.da Azoz Radiation Biology Departm.nt National Center for Radiation Research and Technology (NCRRT) Egyptian Atomic Energy Authority (EAEA) Cairo Egypt Zoology Departm.nt Faculty of Science Ain Shams University Cairo Egypt

Background: System.c inflam.ation due to radiation exposure h.s been identified in a biological system.by certain m.tabolic and beh.vioral disorders. Th.se anarch.es m.stly m.diated under a regulation of cyclooxygenase 2 (COX2) induced production of an inflam.atory m.diator prostaglandin E2 (PGE2). Aim. Th.s study was undertaken to investigate th. anti-inflam.atory im.act of brown sea weed extract (BSWE) against induction of COX2/PGE2 inflam.atory path.ay in gam.a-irradiated rats. Rats were orally adm.nistrated with.BSWE (27 m./kg body weigh./day) for 7 consecutive days before exposure to 8 Gy fractionated gam.a radiation (2 Gy × 4;every 3 days). Treatm.nt with.BSWE was extended along with.and in-between irradiation doses for anoth.r 14 successive days. Our data dem.nstrated th.t th. adm.nistration of BSWE to rats exposed to gam.a radiation, following th. regim.n suggested, significantly neutralize th. ch.nges induced in th. inflam.atory m.lecules COX2, PGE2, tum.r necrosis alph. (TNF-α), and nitric oxide (NO). In addition, it adjusted significantly th. cellular redox tone via regulation of ch.nges induced in m.londialdeh.de (m.A) reduced glutath.one (GSh., superoxide dism.tase (SOD) catalase (CAT) and xanth.ne oxidoreductase system.(XOR). Credibly, from.th. results em.rged in th.s study, it could be suggested th.t BSWE h.s substantial anti-inflam.atory activities and gam.a radiation protection capabilities. It is recom.ended to include BSWE in th. treatm.nt strategy of various inflam.atory diseases especially cancer as a safe natural anti-inflam.atory agent.

关键词： COX2 PGE2 Brown Seaweed Extract System.c Inflam.ation Gam.a Irradiation

Antim.crobial activity of m.tal-substituted cobalt ferrite nanoparticles synth.sized by sol-gel tech.ique

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Particuology 2018年第5期16卷 141-151页

作者： A.h.Ash.ur Ah.0}d I.E1-Batal m.I.A.Abdel m.ksoud Gh.rieb S.El-Sayyad Sh.Labib E.Abdeltwab m.m.El-Okr m.terials Science Laboratory Radiation Physics Department.National Center for Radiation Research and TechnologyAtomic Energy AuthorityCairoEgypt Drug m.crobiology Laboratory Drug Radiation Research DepartmentNational Center for Radiation Research and TechnologyAtomic Energy Authority CairoEgypt Nuclear Ch.m.stry Departm.nt Hot Laboratories CenterAtomic Energy AuthorityCairoEgypt Ph.sics Departm.nt Faculty of Science (Girls Branch)Al-Azhar UniversityCairo.Egypt Ph.sics Departm.nt.Faculty of Science (Boys Branch. Al-Azhar UniversityCairoEgypt

m.tal-substituted cobalt ferrites [m.Co(1-x)Fe2O4(m.Zn,Cu,m.;x=0.0,0.25,0.5,and 0.75)]were synth.sized via a sol-gel *** ferrite structures were confirm.d by X-ray diffraction, Fourier transform.infrared spectroscopy,scanning electron m.croscopy,surface analysis using th. Brunauer-Em.ett-Teller m.th.d,and energy-dispersive X-ray *** activity of th.se ferrites against selected path.genic m.crobes was *** structures rem.ined cubic spinel ph.ses after substitution of *** strongly influenced th. m.crostructure and h.m.ge- neous grain *** particle size of th. ferrites increased linearly with.increase in th.ir annealing *** surface area of zinc cobalt ferrite nanoparticles (ZCFO)was 52.56m.2/g,th. average pore size was 1.84nm.and pore volum. was 0.136m./*** ferrites sh.wed antim.crobial activity toward all path.gens *** th.se,th. m.st powerful was ZCFO,sh.wing zones of inh.bition of 13.0m. against Bacillus subtilis and Staph.lococcus aureus and 12.0m. against Candida ***-irradiated ZCFO nanoparticles (150.0kGy)m.intained h.gh.r antim.crobial activity th.n non-irradiated particles,e.g. being active toward *** (16.0m.).ZCFO is proposed as a candidate m.terial for industrial and biom.dical purposes.

关键词： Antibacterial Antifungal Zone of inh.bition Zinc cobalt ferrite nanoparticles Gam.a irradiation