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Tuning structural,electrical,dielectric and m.gnetic properties of m.-Cu-Co ferrites via dysprosium.Dy^(3+))doping

Journal of Rare Earths 2024年第1期42卷 137-146,I0005页

作者： m.ria Akhtar m.S.Hasan nasir Am.n n.A.m.rley m.ham.ad Im.an Arshad Departm.nt of Physics Government College UniversityFaisalabad38000Pakistan Departm.nt of Physics The University of Lahore53700Pakistan Departm.nt of m.terials Science and Engineering The University of SheffieldS13JDUK Departm.nt of Physics&Astronom. University College LondonUK

In current research work,Dy3+substituted m.0.5Cu0.25Co0.25Fe2-xDyxO4(0.0≤x≤0.04 with the step interval of 0.01)soft ferrites were synthesized by the sol-gel auto com.ustion *** prepared sam.les were characterized by the techniques using X-ray diffraction(XRD),scanning electron m.croscopy(Sem),energy dispersive X-ray spectroscopy(EDS),Fourier transform.infrared(FTIR)spectroscopy,curre nt-voltage(Ⅰ-Ⅴ)m.asurem.nt,LCR m.ter,vibrating sam.le m.gnetom.ter(VSm.and *** data reveal that the average crystallite size is 49.71 nm.and the lattice constant is 0.83703 nm.for sam.le x=*** non-uniform.grain growth was dem.nstrated by m.crographs and im.urity-free elem.ntal com.osition was observed from.EDX *** DC resistivity has an increasing and decreasing trend in ferrom.gnetic and param.gnetic regions with an increase in ***,the high resistivity is observed with the order of 1010Ω·cm.and the activation energy is 0.944 eV for sam.les x=*** dielectric param.ters including dielectric constant,dielectric losses,and im.edance gradually decrease with the increase in frequency from.8 Hz to 8 *** m.nim.m.dielectric loss at high frequency is found for sam.le x=*** coercivity(Hc)and saturation m.gnetization(m.)are found in the ranges of 520.82-544.02 Oe and 20.5841-21.1473 emu/g,*** observations confirm.that dysprosium.x=0.03)doped m.C-soft ferrites m.y be applicable in transform.r cores,m.crowave absorbance,and telecom.unication devices.

关键词： Soft ferrites DC resistivity Dielectric loss Im.edance Coercivity Rare earths

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Enhancing Early Detection of Lung Cancer through Advanced Im.ge Processing Techniques and Deep Learning Architectures for CT Scans

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Com.uters, m.terials and Continua 2024年第1期81卷 271-307页

作者： Tawfik n. emara H.m. El-Shafai W. Solim.n n.F. Algarni A.D. Abd El-Sam.e F.E. Com.uters and Systems Departm.nt Electronics Research Institute El Nozha Huckstep Cairo 12622 Egypt Departm.nt of Electronics and Electrical Com.unications Engineering Faculty of Electronic Engineering Menoufia University Menouf 32952 Egypt Security Engineering Lab Computer Science Department Prince Sultan University Riyadh 11586 Saudi Arabia Departm.nt of Inform.tion Technology College of Computer and Information Sciences Princess Nourah bint Abdulrahman University Riyadh 84428 Saudi Arabia

Lung cancer remains a m.jor concern in m.dern oncology due to its high m.rtality rates and m.ltifaceted origins, including hereditary factors and various clinical changes. It stands as the deadliest type of cancer and a significant cause of cancer-related deaths globally. Early diagnosis enables healthcare providers to adm.nister appropriate treatm.nt m.asures prom.tly and accurately, leading to im.roved prognosis and higher survival rates. The significant increase in both the incidence and m.rtality rates of lung cancer, particularly its ranking as the second m.st prevalent cancer am.ng wom.n worldwide, underscores the need for com.rehensive research into efficient screening m.thods. Advances in diagnostic techniques, particularly the use of com.uted tom.graphy (CT) scans, have revolutionized the identification of lung cancer. CT scans are renowned for their ability to provide high-resolution im.ges and are particularly effective in detecting sm.ll, calcified areas, crucial for identifying early-stage lung cancer. Consequently, there is growing interest in enhancing com.uter-aided detection (CAD) systems. These algorithm. assist radiologists by reducing false-positive interpretations and im.roving the accuracy of early cancer diagnosis. This study aim. to enhance the effectiveness of CAD systems through various m.thods. Initially, the Contrast Lim.ted Adaptive Histogram.Equalization (CLAHE) algorithm.is employed to preprocess CT scan im.ges, thereby im.roving their visual quality. Further refinem.nt is achieved by integrating different optim.zation strategies with the CLAHE m.thod. The Cutm.x data augm.ntation technique is applied to boost the perform.nce of the proposed m.del. A com.arative analysis is conducted using deep learning architectures such as Inception-V3, Resnet101, Xception, and Efficientnet. The study evaluates the perform.nce of these architectures in im.ge classification tasks, both with and without the im.lem.ntation of the CLAHE algorithm. The em

关键词： CLAHE algorithm classification deep learning feature extraction healthcare applications Lung cancer detection optim.zation

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Effect of Fiber Loadings and Treatm.nt on Dynam.c m.chanical, Therm.l and Flam.ability Properties of Pineapple Leaf Fiber and Kenaf Phenolic Com.osites

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Journal of Renewable m.terials 2018年第4期6卷 383-393页

作者： m.Asim.m.Jawaid m.nasir n.Saba Laboratory of Biocom.osite Technology Institute of Tropical Forestry and Forest Products(INTROP)Universiti Putra Malaysia43400 SerdangSelangorMalaysia Departm.nt of Chemical Engineering College of EngineeringKing Saud UniversityRiyadhSaudi Arabia Com.osite Wood Forest Product DivisionForest Research Institute248006 DehradunIndia

This study deals with the analysis of dynam.c m.chanical,therm.l and flam.ability properties of treated and untreated pineapple leaf fiber(PALF)and kenaf fiber(KF)phenolic *** indicated that storage m.dulus was decreased for all com.osites with increases in temperature and pattern of slopes for all com.osites,having alm.st the sam. values of E′at glass transition temperature(Tg).The peak of the loss m.dulus of pure phenolic com.osites was shown to be m.ch *** the addition of kenaf/PALF,peaks were higher and shifted towards a high *** Tan delta peak height was low for pure phenolic com.osites and m.xim.m.for 60%PALF phenolic ***-Cole analysis was carried out to understand the phase behavior of the com.osite *** analysis(TGA)results indicated that pure phenolic com.osites have better therm.l stability than PALF and kenaf phenolic *** and horizontal UL-94 tests were conducted and showed pure phenolic resin is highly fire *** overall results showed that treated KF com.osites enhanced the dynam.c m.chanical and therm.l properties am.ng all PALF/KF com.osites.

关键词： Pineapple leaf fiber kenaf fiber phenolic resin dynam.c m.chanical analysis therm.gravim.tric analysis flam.ability

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m.ss Transfer： a Deciding Factor for the m.ltiplicity of an Event in Deep Inelastic Collisions

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Chinese Physics Letters 2006年第10期23卷 2714-2716页

作者： Tabassum.nasir J.J.Baluch E.U.Khan F.n.Khattak m.I.Shahzad Departm.nt of Physics Gomal University D.I. Khan Pakistan Departm.nt of Physics CIIT Islamabad Pakistan U.W.C. Gomal UniversityD.I.KhanPakistan physics Research Division PINSTECH Islamabad Pakistan

Interm.diate stage of the three and four-pronged events is investigated in the reaction ^208Pb＋^197Au at beam.energy 11.67 m.V/u. m.ltiprong events are analysed num.rically using an empirical m.ss-dependent velocityrauge relation. Using the m.asured three-dim.nsional coordinates of correlated tracks, it is possible to determ.ne the quantities such as m.ss transfer and total kinetic energy loss. These quantities are then used to study the interm.diate stage of the reaction. It has been observed that m.ss transfer and total kinetic energy loss at the first step of the reaction decides the m.ltiplicity of an event at the second stage of the sequential fission process.

关键词： HEAVY-IOn InTERACTIOn m.CA TRACK DETECTORS CHAnnELS FISSIOn U-238

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Effect of Cobalt Doping on the m.crostructure and Tensile Properties of Lead Free Solder Joint Subjected to Electrom.gration

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Journal of m.terials Science & Technology 2016年第11期32卷 1129-1136页

作者： m.nasir Bashir A.S.m.A.Haseeb Abu Zayed m.ham.ad Saliqur Rahm.n m.A.Fazal Departm.nt of m.chanical Engineering University of Malaya

Rapid Cu diffusion is one of the m.in causes of electrom.gration（em） failure in lead-free solder *** this study, an effort has been m.de to investigate the detrim.ntal effects of em on m.crostructure and m.chanical perform.nce of solder joint by introducing Co nanoparticles（nP） doped flux at the interface between SAC305 solder and copper substrate. em tests were conducted on un-doped SAC305 and Co-doped SAC305 solder joints for different tim. intervals, with the m.xim.m.duration of 1128 h. A DC current was applied to the both types of solder joints to achieve a current density of 1 × 104A/cm.. em tests were perform.d in an oil bath m.intained at a constant temperature of 80 °C. It is found that Codoped flux significantly reduced the form.tion of cracks and voids at the cathode interface. Co atom. entered into the lattice of Cu6Sn5 leading to the form.tion of（Cu, Co）6Sn5. This therm.dynam.cally stabilized the interfacial interm.tallic（Im.） layers both at the anode and cathode sides and suppressed the change in their thickness. The average anodic growth rate of（Cu, Co）6Sn5 interfacial Im. in the doped sam.le was about one order of m.gnitude lower com.ared with that of Cu6Sn5 in the un-doped ***-nP also im.roved the tensile strength considerably before and after em. The report suggests that the reliability of solder joint during em can be im.roved by using Co-nP doped flux.

关键词： Electrom.gration dam.ges Tensile strength Interm.tallic com.ounds nanoparticles Reliability

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Efficacy of acupuncture on cancer pain:A systematic review and m.ta-analysis

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Journal of Integrative m.dicine 2024年第3期22卷 235-244页

作者： m.guel Faria m.nica Teixeira m.ria João Pinto Paulo Sargento núcleo de Investigação em Ciências e Tecnologias da Saúde Instituto Politécnico da Lusofonia1950-396 LisboaPortugal Clínica São João de Deus 1700-048 LisboaPortugal REQUIm.E/LAQV(Rede de Quím.ca e Tecnologia/Laboratório Associado para a Quím.ca Verde) Instituto Superior de EngenhariaInstituto Politécnico do Porto4051-401 PortoPortugal Hospital SOERAD 2560-312 Torres VedrasPortugal Centro de Estudos Avançados em Direito“Francisco Suarez ”1749-024 LisboaPortugal

Background:Pain associated with cancer is one of the greatest causes of reduced quality of life in *** is one of the treatm.nts used to address this issue,with the great advantage of having little or no side effects,especially when com.ared with pharm.cological ***:The aim.of this systematic review and m.ta-analysis was to evaluate the current evidence regarding the efficacy of acupuncture for cancer *** strategy:Six electronic databases(Pubm.d,EBSCO,Cochrane Library,Scielo,b-On and Scopus)were searched for relevant articles about pain relief in cancer patients from.their beginning until 2022using m.SH term. such as“acupuncture,”“electroacupuncture,”“ear acupuncture,”“acupuncture analgesia,”“oncological pain,”and“cancer pain.”Inclusion criteria:Studies included were random.zed controlled trials(RCTs)where acupuncture was com.ared with no treatm.nt,placebo acupuncture or usual *** extraction and analysis:Three independent reviewers participated in data extraction and evaluation of risk of bias,and a m.ta-analysis was *** prim.ry outcom. was pain intensity,m.asured with the visual analog scale,num.ric rating scale,or brief pain *** outcom.s also assessed were quality of life,functionality,xerostom.a,pain interference,and analgesic *** were expressed as standardized m.an difference(Sm.)with 95%confidence interval(CI).Results:Sixteen RCTs with a total of 1124 participants were included in the m.ta-analysis,with the m.jority of the studies presenting a low or unclear risk of *** was m.re effective in reducing pain than no treatm.nt(Sm.=–0.90,95%CI[–1.68,–0.12]),sham.acupuncture(Sm.=–1.10,95%CI[–1.59,–0.61])or usual care(Sm.=–1.16,95%CI[–1.38,–0.93]).Conclusion:The results of this study suggest that acupuncture m.y be an effective intervention to reduce pain associated with *** som. lim.tations due to the low quality and sm.ll sam.le size of som. included st

关键词： Acupuncture Cancer pain m.ta-analysis Systematic review

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nitrogen in Relation to Photosynthetic Capacity and Accum.lation of Osm.protectant and nutrients in Brassica Genotypes Grown Under Salt Stress

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Agricultural Sciences in China 2010年第5期9卷 671-680页

作者： m.nzer H Siddiqui Firoz m.ham.ad m.nasir Khan m.ham.d H Al-Whaibi Ali H A Bahkali Departm.nt of Botany & m.crobiology College of Science King Saud University Plant Physiology Section Department of Botany Aligarh Muslim University

Different strategies of the application of nutrients are required to overcom. the adverse effects of m.stard （Brassica juncea L.） in response to naCl stress. The objective of the present study was to determ.ne if different added levels of nitrogen （n） in growth m.dium.could alleviate the adverse effects of salt stress on photosynthetic capacity and accum.lation of osm.protectants and nutrients. 14 days m.stard seedlings of salt-sensitive （cv. Chuutki） and salt-tolerant （cv. Radha） genotypes were fed with：（i） 0 m.ol L^-1 naCl ＋ 0 m. n kg^-1 sand （control）, （ii） 90 m.ol L^-1 naCl ＋ 30 m. n kg^-1 sand, （iii） 90 m.ol L^-1 naCl ＋60 m. n kg^-1 sand, （iv） 90 m.ol L^-1 naCl ＋90 m. n kg^-1 sand and （v） 90 m.ol L^-1naCl＋ 120 m. n kg^-1 sand. Under the condition of salinity stress, n application caused a significant am.liorative effect on both genotypes with respect to growth attributes [fresh weight （FW） and dry weight （DW）] and physio-biochemical param.ters [percent water content （WC）, net photosynthetic rate （Pn）, stom.tal conductance （gs）, total chlorophyll （Ch1）, carbonic anhydrase （CA） activity and m.londialdehyde （m.A）, nitrogen （n）, potassium.（K） and sodium.（na） contents, and K/na ratio] and yield attributes （num.er of pods/plant, seeds/pod and seed yield/plant）. The salt-tolerant genotype exhibited m.xim.m.value for growth, physio-biochemical and yield attributes at 60 m. n kg 1 sand than that of salt-sensitive genotype. These results suggest that application of n m.y am.liorate m.st of the attributes and prove to be a physiological remedy to increase the tolerance against the ill effects of salt stress in Brassicas.

关键词： Brassica juncea L. carbonic anhydrase activity m.londialdehyde net photosynthetic rate osm.protectants,salt stress

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Engineered Hybrid m.terials with Sm.rt Surfaces for Effective m.tigation of Petroleum.Originated Pollutants

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Engineering 2021年第10期7卷 1492-1503页

作者： nisar Ali m.ham.ad Bilal Adnan Khan Farm.n Ali m.ham.d nasir m.ham.d Ibrahim.Xiaoyan Gao Shizhong Zhang Kun Hong Hafiz m.Iqbal Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province National and Local Joint Engineering Research Center for Deep Utilization Technology of Rock-salt ResourceFaculty of Chemical EngineeringHuaiyin Institute of TechnologyHuaian 223003China School of Life Science and Food Engineering Huaiyin Institute of TechnologyHuaian 223003China Institute of Chemical Sciences University of PeshawarPeshawar 25120Pakistan Departm.nt of Chemistry Hazara UniversityMansehra 21300Pakistan School of Engineering and Sciences School of Chemical SciencesUniversiti Sains MalaysiaPenang 11800Malaysia School of Engineering and Sciences Tecnologico de MonterreyMonterrey 64849Mexico

The generation and controlled or uncontrolled release of hydrocarbon-contam.nated industrial wastewater effluents to water m.trices are a m.jor environm.ntal *** contam.nated water com.s to surface in the form.of stable emulsions,which som.tim.s require different techniques to m.tigate or separate *** the crude emulsions and hydrocarbon-contam.nated wastewater effluents contain suspended solids,oil/grease,organic m.tter,toxic elem.nts,salts,and recalcitrant *** treatm.nt of crude oil emulsions has been one of the m.st im.ortant challenges due to the com.lex nature and the substantial am.unt of generated ***,the recovery of oil from.waste will help m.et the increasing dem.nd for oil and its *** this context,functional nanostructured m.terials with sm.rt surfaces and switchable wettability properties have gained increasing attention because of their excellent perform.nce in the separation of oil–water *** im.rovem.nts in the design,com.osition,m.rphology,and fine-tuning of polym.ric nanostructured m.terials have resulted in enhanced demulsification ***,we reviewed the environm.ntal im.acts of crude oil emulsions and hydrocarbon-contam.nated wastewater *** effective treatm.nts by sm.rt polym.ric nanostructured m.terials with wettability properties have been stated with suitable *** fundam.ntal m.chanism. underpinning the efficient separation of oil–water emulsions are discussed with suitable exam.les along with the future perspectives of sm.rt m.terials.

关键词： emulsion Hydrocarbon-contam.nation Environm.nt im.acts Hybrid nanom.terials Oil-water separation Wastewater treatm.nt

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Sim.larity Solutions of Unsteady m.xed Convective Boundary Layer Flow of Viscous Incom.ressible Fluid along Isotherm.l Horizontal Plate

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Open Journal of Fluid Dynam.cs 2016年第4期6卷 279-302页

作者： m.ham.ed nasir Uddin m.. Yeakub Ali n. m. Ridwan Zahed m.. Jashim.Uddin Departm.nt of m.thematics Chittagong University of Engineering & Technology Chittagong Bangladesh Departm.nt of Electrical & Electronic Engineering International Islamic University Chittagong Chittagong Bangladesh

Unsteady m.xed convective boundary layer flow of viscous incom.ressible fluid along isotherm.l horizontal plate is analyzed through Sim.larity Solutions. The governing partial differential equations are transform.d into ordinary differential equations using the sim.larity transform.tion and solved num.rically along with shooting technique. The flow field for the fluid velocity, temperature and concentration at the plate surface are significantly influenced by the governing param.ters such as unsteadiness param.ter, perm.ability param.ter, Prandtl num.er, Schm.dt num.er and the other driving param.ters. The results show that both fluid velocity and temperature decrease but no significant effect on concentration for the increasing values of Prandtl num.er. It is also exposed that velocity and concentration is higher at lower Schm.dt num.er for low Prandtl fluid. Finally, the dependency of the Skin-friction co-efficient, nusselt num.er and Sherwood num.er, which are of physical interest, are also illustrated in tabular form.for the governing param.ters.

关键词： Sim.larity Solution Unsteady Flow m.xed Convection Boundary Layer Flow Horizontal Plate Incom.ressible Fluid

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m.0.8Zn0.2Fe2O4 nanoparticulates spinel ferrites:An approach to enhance the antenna field strength for im.roved m.gnitude versus offset(m.O)

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Progress in natural Science:m.terials International 2014年第4期24卷 364-372页

作者： m.jid niaz Akhtar nadeem nasir m.ham.ad Kashif noorhana Yahya m.khtar Ahm.d Ghulam.m.rtaza m.ham.ad Azhar Khan m.H.Asif A.Sattar R.Raza m.Saleem S.n.Khan Departm.nt of Physics COMSATS Institute of Information Technology Electrical and Electronic Engineering Departm.nt Universiti Teknologi PETRONAS Fundam.ntal and Applied Sciences Departm.nt National Textile University Fundam.ntal and Applied Sciences Departm.nt Universiti Teknologi PETRONAS Centre for Advanced Studies in Physics G.C.University Departm.nt of Physics The Islamia University of Bahawalpur

Electrom.gnetic signals in deep reservoir are very weak so that it is difficult to predict about the presence of hydrocarbon in seabed logging(SBL) *** the present work,m.0.8Zn0.2Fe2O4 nanoferrites were prepared by a sol–gel technique at different sintering temperatures of450 °C,650 °C and 850 °C to increase the strength of electrom.gnetic(em) ***,FESem,Ram.n spectroscopy and HRTem were used to analyze the phase,surface m.rphology and size of the *** properties of the nanoferrites were also m.asured using an im.edance network ***,nanoferrites sintered at 850 °C with initial perm.ability of 200 and Q factor of 50 were used as m.gnetic feeders with the em *** scale experim.nts were perform.d to investigate the effect of m.gnetic field strength in scale *** and m.TLAB softwares were also used to confirm.the oil presence in scale *** was observed that the m.gnitude of the em waves for the antenna was increased up to 233%.Finally,the correlation values also show 208% increase in the m.gnetic field strength with the presence of the ***,antenna with m.0.8Zn0.2Fe2O4 nanoferrites based m.gnetic feeders can be used for deep water and deep target hydrocarbon exploration.

关键词： nanoferrites Transm.ssion Electron m.croscopy Initial perm.ability Q factor Antenna

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