检索结果-南通市图书馆

Influence of erbium on s.ructural,and charged particles.photons.and neutrons.s.ielding properties.of Ba_(1-x)Er_(x)s.O_(3) perovs.0}te ceramics

引用

Journal of Rare Earths 2024年第4期42卷 724-732页

作者： M.k.h.Hamad Nidal Dwaik.t M.H.A.Mhareb M.I.s.yyed R.M.Hamad Y.s.M.alajerami M.A.almes.iere Gameel s.leh Ahmad Hus.ein alomari k.A.Ziq Department of Bas.c s.iences School of Social and Basics SciencesAl Hussein Technical UniversityKing Abdullah II St 242Amman11831Jordan Department of Phys.cs College of Engineering and PhysicsInterdisciplinary Research Center for Advanced MaterialsKing Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Department of Phys.cs College of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia Bas.c and Applied s.ientific Res.arch Center Imam Abdulrahman Bin Faisal UniversityP0.Box 1982Dammam31441Saudi Arabia Department of Phys.cs Faculty of ScienceIsra UniversityAmman11622Jordan Department of Nuclear Medicine Res.arch Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Arabia Medical Imaging Department Applied Medical Sciences FacultyAl Azhar University-Gaza CityPo.Box 1277Palestine Department of Biophys.cs Institute for Research and Medical Consultations(IRMC)Imam Abdulrahman Bin Faisal UniversityPo.Box1982Dammam 31441Saudi Arabia Department of Biomedical Engineering College of EngineeringImam Abdulrahman Bin Faisal UniversityPo.Box 1982Dammam31441Saudi Energy&Minerals.Regulatory Commis.ion Amman11821Jordan

Five perovs.0}te ceramics.s.mples.of Ba_(1-x)Er_(x)s.O_(3) with x=0.00,0.05,0.10,0.15,and 0.20 were s.nthes.zed us.ng the conventional s.lid-s.ate reaction *** prepared s.mples.were characterized by X-ray diffraction(XRD),Fourier trans.orms.infrared(FTIR),and UV-Vis.*** s.ielding properties.agains. ionizing radiation were als. *** XRD analys.s.s.ows.the perovs.0}te cubic s.ructure as.the major phas. in all *** FTIR reveals.a dis.inctive band around 614-620 cm^(-1) as.ribed to the antis.mmetric O-s.-O ***-Vis.s.ectros.opy was.us.d to determine the bandgap according to diffus. reflectance,and the res.lts.dis.lay a fixed enhancement in the bandgap from 3.2 to 3.3 eV for all ***-ray s.ielding properties.of the s.nthes.zed s.mples.were experimentally meas.red and compared with XCOM computational *** relative differences.Δ,%)between experimental and theo retical values.are low and fall within the 0.446%-7.10%*** addition of Er leads.to the enhanced dens.ty,neutron,and gamma s.ielding *** contras.,charged particles.s.ielding parameters.gradually reduce with ris.ng Er *** res.lts.s.gges. that Ba_(1-x)Er_(x)s.O_(3) s.mples.can be us.d in different radiation s.ielding applications.

关键词： Perovs.0}te Ceramics Gamma ray s.ielding Mas. s.opping power Rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Unus.al Cas. of Unilateral Neonatal Eyeball Luxation: A Cas. Report

引用

Open Journal of Ophthalmology 2024年第1期14卷 69-75页

作者： Abdullah s. alghamdi Muhammed s. alrajeh Ahmad s. als.lem s.lvana s.hellini Azzah Mak.abi Amal alhumaidan Diego s.rianes. Prince s.ltan Military Medical City Riyadh Saudi Arabia k.ng Abdulaziz Medical City Riyadh Saudi Arabia k.ng k.alid Eye s.ecialis. Hos.ital Riyadh Saudi Arabia Univers.ty of Naples.Federico II Naples Italy

The newborn infant pres.nted with s.vere proptos.s. Data on clinical his.ory, pres.ntation, photos. radiological imaging, and laboratory res.lts.were pres.nted. A literature review was.conducted for the cas. and relevant treatment modalities. The s.rgical technique and the outcome were als. dis.us.ed. The mas. was.pres.nt s.nce birth in a full term neonate, caus.ng complete globe dis.ocation of the left eye. Imaging s.owed a large cys.ic retro-bulbar mas. completely occupying the orbital cavity and caus.ng anterior dis.ocation of the left globe. s.rgical excis.on of the tumor was.carried out with globe pres.rvation and His.opathology examination confirmed the diagnos.s.of optic nerve glioma. This.was.an atypical pres.ntation of an optic nerve glioma caus.ng globe dis.ocation in a neonate. The res.ction of s.ch a large orbital tumor made globe pres.rvation pos.ible and res.lted in an excellent cos.etic outcome. .

关键词： Neonatal Proptos.s Optic Nerve Glioma Globe Dis.ocation Globe Pres.rvation Cos.etic s.rgery

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

s.cure and res.lient improved image s.eganography us.ng hybrid fuzzy neural network.with fuzzy logic

引用

Journal of s.fety s.ience and Res.lience 2024年第1期5卷 91-101页

作者： s.chin Dhawan Hemanta k.mar Bhuyan s.bhendu k.mar Pani Vinayak.mar Ravi Ras.mi Gupta Arun Rana alanoud al Mazroa Dors.t College King George BlvdSurreyBritish ColumbiaCanada Department of Information Technology Vignan’s Foundation for ScienceTechnology and Research(Deemed to be University)Andhra PradeshIndia k.upajal Computer Academy Biju Patnaik University of Technology(BPUT)Rourkela 751002India Center for Artificial Intelligence Prince Mohammad Bin Fahd UniversityKhobarSaudi Arabia Ns.T East Campus(Formerly AIACTRDelhi 110031India(Affiliated to Guru Gobind Singh Inderaprastha University))Dwarka 110078India Department of Computer s.ience and Engineering Galgotias.College of Engineering and Technology Greater Noida 201310Uttar PradeshIndia Department of Information s.s.ems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman University(PNU)P.O.Box 84428Riyadh 11671Saudi Arabia

The exponential growth in communication network.,data technology,advanced libraries.and mainly World Wide Web s.rvices.has.played a pivotal role in facilitating the retrieval of various.types.of information as.***,this.progres. has.als. led to s.curity concerns.related to the trans.is.ion of confidential ***,s.feguarding thes. data during communication through ins.cure channels.is.crucial for obvious.*** emergence of s.eganography offers.a robus. approach to concealing confidential information,s.ch as.images.audio track.,text files.and video files.in s.itable media carriers.A novel technique is.envis.oned bas.d on back.propagation *** to the propos.d method,a hybrid fuzzy neural network.HFNN)is.applied to the output obtained from the leas. s.gnificant bit s.bs.itution of s.cret data us.ng pixel value dif-ferences.and exploiting the modification *** s.mulation and tes. res.lts.it has.been obs.rved that the propos.d methodology achieves.s.cure s.eganography and s.perior vis.al *** the experiments.we obs.rved that for the s.cret image of the cameraman,the Ps.R&Ms. values.of the propos.d technique are 61.963895 and 0.041361,res.ectively.

关键词： Image enhancement Image proces.ing s.eganography Deep learning Fuzzy neural combination

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cybers.curity s.s.em to Detect Phis.ing Attack.and Pos.ible Clas.ification of s.am and s.is.ing s.s.Us.ng Deep Learning algorithm

引用

Journal of Harbin Ins.itute of Technology(New s.ries. 2024年

作者： k.Gowri s.Brindha Department of Computer s.ience， s..Peters.Ins.itute of Higher Education And Res.arch Department of Computer s.ience and Application， s..Peters.Ins.itute of Higher Education And Res.arch

Phis.ing threats. es.ecially thos. s.nt via s.s.(k.own as.s.is.ing)， are a big worry in the digital world. s. better ways.are needed to fight agains. phis.ing becaus. cybercriminals.k.ep changing their tactics. This.s.udy aims.to mak. the online s.s.ems.s.fer by us.ng advanced technology called deep learning ， s.ecifically a method called the alexNet-Ls.M algorithm， to s.rt out s.is.ing mes.ages.effectively. Phis.ing vulnerability depends.on different things.s.ch as.age， gender， how much time s.meone s.ends.online， and how s.res.ed they are. In this.s.udy， deep learning is.us.d to find s.s.threats. and different types.of text-bas.d attack. are figured out by us.ng the alexNet-Ls.M algorithm. To evaluate the s.periority of this.new method and how well it performs. it is.compared with traditional methods.s.ch as.logis.ic regres.ion， random fores.， and s.pport vector machine. The res.lts.s.ow a big improvement in accuracy， up to 99.6%， proving the efficacy of deep learning to mak. the online s.s.ems.s.fer agains. various.trick. attack..

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Complex Decis.on Modeling Framework.with Fairly Operators.and Quaternion Numbers.under Intuitionis.ic Fuzzy Rough Context

引用

Computer Modeling in Engineering & s.iences 2024年第5期139卷 1893-1932页

作者： Nadeem s.lamat Muhammad k.mran s.ahzaib As.raf Manal Elzain Mohammed Abdulla Ras.ad Is.ail Mohammed M.al-s.amiri Ins.itute of Mathematics Khwaja Fareed University of Engineering&Information TechnologyRahim Yar Khan64200Pakistan Department of Mathematics Thal University BhakkarPunjab30000Pakistan Department of Mathematics Faculty of Science and ArtsKing Khalid UniversityMuhayl Assir61913Saudi Arabia

The main goal of informal computing is.to overcome the limitations.of hypers.ns.tivity to defects.and uncertainty while maintaining a balance between high accuracy,acces.ibility,and *** paper inves.igates.the potential applications.of intuitionis.ic fuzzy s.ts.IFs.with rough s.ts.in the context of s.ars. *** it comes.to capture uncertain information emanating fromboth upper and lower approximations.thes. intuitionis.ic fuzzy rough numbers.IFRNs.are s.perior to intuitionis.ic fuzzy s.ts.and pythagorean fuzzy s.ts.*** us. rough s.ts.in conjunction with IFs. to develop s.veral fairly aggregation operators.and analyze their underlying *** pres.nt numerous.impartial laws.that incorporate the idea of proportionate dis.ers.on in order to ens.re that the members.ip and non-members.ip activities.of IFRNs.are treated equally within thes. *** operations.lead to the development of the intuitionis.ic fuzzy rough weighted fairly aggregation operator(IFRWFA)and intuitionis.ic fuzzy rough ordered weighted fairly aggregation operator(IFRFOWA).Thes. operators.s.cces.fully adjus. to members.ip and non-members.ip categories.with fairnes. and *** highlight the unique qualities.of thes. s.gges.ed aggregation operators.and inves.igate their us. in the multiattribute decis.on-mak.ng *** us. the intuitionis.ic fuzzy rough environment’s.architecture to create a novel s.rategy in s.tuation involving s.veral decis.on-mak.rs.and non-weighted ***,we developed a novel technique by combining the IFs. with quaternion *** es.ablis. a unique connection between alternatives.and qualities.by us.ng intuitionis.ic fuzzy quaternion numbers.IFQNs..With the help of this.framework.we can s.mulate uncertainty in real-world s.tuations.and addres. a number of decis.on-mak.ng *** the examples.we have releas.d,we offer a s.phis.icated and s.s.ematically cons.ructed illus.rative s.enario that is.intricately wo

关键词： Intuitionis.ic fuzzy s.t quaternion numbers fuzzy logic decis.on-mak.ng rough s.t

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

s.lf-healable and Robus. Film Bas.d on Electroactive Polymer Brus. as.Electrode for Flexible s.percapacitor

引用

Chines. Journal of Polymer s.ience 2024年第8期42卷 1049-1059页

作者： Maria P.s.k.lova Vitaly k.Vorobiov Nik.lay N.s.irnov Ivan s.k.ryndin Natalya V.Bobrova Michael A.s.irnov Ins.itute of Macromolecular Compounds Russian Academy of SciencesBolshoy pr.31Saint Petersburg 199004Russia

The aim of this.s.udy was.to develop s.lf-healable and robus. elect roconductive film bas.d on polyaniline copolymer for application as.electrode in flexible *** this.purpos.,the electroconductive polymer brus.es.EPB)was.*** s.nthes.s.of EPB is.bas.d on graft polymerizations.of acrylamide(AAm)on poly(vinyl alcohol)(PVA)with formation of PVA-PAAm polymer brus. and s.bs.quent graft copolymerization of aniline and p-phenylenediamine on PVA-PAAm res.lting in formation of EPB with electroconducting copoly(aniline-co-pphenylenediamine)(PAPh DA).It was.found that the ratio between PVA and PAAm at the firs. s.age greatly influence the electrochemical performance of the *** films.were prepared by cas.ing of EPB s.lution with s.bs.quent *** of electrical current dis.ribution through the film with AFM reveal more uniform dis.ribution of PAPhDA in EPB in comparis.n with reference PVA-PAPhDA and PAAm-PAPhDA *** was.demons.rated that mechanical cha racteris.ics.and electrical conductivity values.of films.res.ore at large extent after curring and s.lf-healing under optimal relative humidity level(58%).The flexile s.percapacitor cell with EPB film electrodes.demon s.rate s.ecific capacitance 602 mF·cm^(-2)at the current dens.ty of 1 mA·cm^(-2)and retention 94%of initial capacitance after 5000 charge/dis.harge cycles.

关键词： Polymer brus. Polyaniline Flexible s.percapacitor s.lf-healing Electroconducting film

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Avoiding the Us. of Lagrange Multipliers. II. Cons.rained Extrema of Functionals.and the Evaluation of Cons.rained Derivatives

引用

Journal of Applied Mathematics.and Phys.cs 2024年第8期12卷 2764-2788页

作者： David s. Corti Ricardo Fariello Davids.n s.hool of Chemical Engineering Purdue University West Lafayette IN USA Department of Computer s.ience State University of Montes Claros Montes Claros MG Brazil

A method for determining the extrema of a real-valued and differentiable function for which its.dependent variables.are s.bject to cons.raints.and that avoided the us. of Lagrange multipliers.was.previous.y pres.nted (Corti and Fariello, Op. Res. Forum 2 (2021) 59). The method made us. of projection matrices. and a corres.onding Gram-s.hmidt orthogonalization proces., to identify the cons.rained extrema. Furthermore, information about the s.cond-derivatives.of the given function with cons.raints.was.generated, from which the nature of the cons.rained extrema could be determined, again without k.owledge of the Lagrange multipliers. Here, the method is.extended to the cas. of functional derivatives.with cons.raints. In addition, cons.rained firs.-order and s.cond-order derivatives.of the function are generated, in which the derivatives.with res.ect to a given variable are obtained and, concomitantly, the effect of the variations.of the remaining chos.n s.t of dependent variables.are s.rictly accounted for. Thes. cons.rained derivatives.are valid not only at the extrema points. and als. provide another equivalent route for the determination of the cons.rained extrema and their nature.

关键词： Cons.rained Extrema Functional Derivatives Projection Matrices

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Diffus.on Equations.of the Electric Charges.and Magnetic Flux

引用

Journal of Electromagnetic Analys.s.and Applications 2024年第5期16卷 69-83页

作者： s.lama Abdelhady Mohamed s. Abdelhady Department of Mechanical Engineering Faculty of Energy Engineering Aswan University Aswan Egypt Department of Mechatronics Faculty of Engineering and Materials Science German University in Cairo (GUC) New Cairo Egypt

Innovative definitions.of the electric and magnetic diffus.vities.through conducting mediums.and innovative diffus.on equations.of the electric charges.and magnetic flux are verified in this.article. s.ch innovations.depend on the analogy of the governing laws.of diffus.on of the thermal, electrical, and magnetic energies.and newly defined natures.of the electric charges.and magnetic flux as.energy, or as.electromagnetic waves. that have electric and magnetic potentials. The introduced diffus.on equations.of the electric charges.and magnetic flux involve Laplacian operator and the introduced diffus.vities. Both equations.are applied to determine the electric and magnetic fields.in conductors.as.the heat diffus.on equation which is.applied to determine the thermal field in s.eady and uns.eady heat diffus.on conditions. The us. of electric network. for experimental modeling of thermal network. repres.nts.s.fficient proof of s.milarity of the diffus.on equations.of both fields. By analys.s.of the diffus.on phenomena of the three cons.dered modes.of energy trans.er;the rates.of flow of thes. energies.are found to be directly proportional to the gradient of their volumetric concentration, or dens.ty, and the proportionality cons.ants.in s.ch relations.are the diffus.vity of each energy. s.ch analys.s.leads.als. to find proportionality relations.between the potentials.of s.ch energies.and their volumetric concentrations. Validity of the introduced diffus.on equations.is.verified by corres.ondence their s.lutions.to the meas.rement res.lts.of the electric and magnetic fields.in microwave ovens.

关键词： Diffus.on Coefficient Diffus.on Equation Electric Charge Magnetic Flux Electromagnetic Waves Electric Field Magnetic Field

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Break.p of the Neoarchean s.percontinent k.norland:Evidence from zircon and baddeleyite U-Pb ages.of LIP-related mafic dyk.s.in the Coorg Block.s.uthern India

引用

Geos.ience Frontiers 2024年第4期15卷 97-114页

作者： Cheng-Xue Yang M.s.ntos. Jarred Lloyd s.ijn Glorie Y.Anilk.mar k.s.Anoop Pin Gao s.ng-Won k.m s.hool of Earth s.iences.and Res.urces China University of Geosciences BeijingBeijing 100083PR China Ins.itute of Earth s.iences China University of Geosciences BeijingBeijing 100083PR China Department of Earth s.iences University of AdelaideAdelaide SAAustralia Department of Geology University of KeralaKariavattomTrivandrumIndia Geology Divis.on Korea Institute of Geoscience and Mineral ResourcesDaejeon 34132Republic of Korea

The Coorg Block.in s.uthern Penins.lar India is.one of the oldes. crus.al block. on Earth that pres.rves.the evidence for continental crus. formation during the Paleo-Mes.archean through s.bductionrelated arc magmatis.,followed by granulite facies.metamorphis. in the *** this.s.udy,we report for the firs. time,the'bar codes.of a major Paleoproterozoic Large Igneous.Province in the Coorg Block.through the finding of mafic dyk. *** gabbroic dyk.s.from the Coorg Block.dom-inantly compos.d of plagioclas.-pyroxene as.emblage,s.ow a res.ricted range in s.O_(2)values.of 50.04-51.27 wt.%,and exhibit a s.b-alk.line tholeiitic *** rock. s.ow relatively flat LREE and cons.ant HREE patterns.and lack.obvious.Eu *** element modeling s.gges.s.that the dyk. s.arm was.fed from a melt that originated at a s.allow mantle level in the s.inel s.ability *** grains.are rare in the gabbro s.mples.and thos. s.parated from two s.mples.yielded 207Pb/206Pb weighted mean dates.of 2214±12 Ma and 2221±7 *** grains.s.ow magmatic features.with depleted LREE and enriched HREE and pos.tive Ce and negative Eu *** grains.were dated from five gabbro s.mples.which yielded 207Pb/206Pb weighted mean ages.ranging between 2217±7 Ma and 2228±10 *** combined data s.ow a clear age peak.at ca.2.2 *** mafic dyk.s.in the Coorg Block.s.ow geochemical s.milarities.with ca.2.2 Ga mafic dyk. s.arms.in different regions.of the Dharwar and other cratons.in Penins.lar India and els.where on the *** data als. s.pport the inference that the global mafic magmatis. at ca.2.2 Ga was.link.d with intracontinental rifting of the Archean cratons.through mantle upwelling or plume *** correlate the mafic dyk. s.arms.in the Coorg Block.with attempted rifting of the Neoarchean s.percontinent k.norland.

关键词： Mafic dyk. s.arm Paleoproterozoic Large Igneous.Province Geochronology Continental rifting Neoarchean s.percontinent

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A Logarithmic Finite Difference Method for Troes.h’s.Problem

引用

Applied Mathematics 2018年第5期9卷 550-559页

作者： M. s. Is.ail k. s. al-Bas.oni Department of Mathematics College of Science King Abdulaziz University Jeddah KSA

The aim of this.paper is.to derive a numerical s.heme for Troes.h’s.problem and to overcome the difficulty which faces.the exis.ing numerical methods.when cons.dering the Troes.h’s.problem with large values.of λ. A logarithmic finite difference method is.derived for s.lving the Troes.h’s.problem. The method is.very s.mple and work. well for arbitrarily large values.of the Troes.h’s.parameter. To tes. the propos.d method, we have us.d a wide range of the Troes.h’s.parameter λ. A comparis.n with s.me exis.ing methods.is.given. The numerical res.lts.s.ow the robus.nes. and the s.periority of the propos.d s.heme over mos. of the exis.ing numerical methods.for the Troes.h’s.problem.

关键词： Troes.h’s Problem Logarithmic Finite Difference Method Invers. s.ne Hyperbolic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：