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Al^(3+) doped CeO_(2) for proton conducting fuel cells

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International Journal of m.nerals,m.tallurgy and m.terials 2024年第10期31卷 2253-2262页

作者： Sarfraz Shahzad Rasool m.ham.ad khalid m.KYousaf Shah bin Zhu Jung-Sik Kim.m.ham.ad Im.an Asghar Nabeela Akbar Wenjing Dong Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage joint Research Center School of Energy and EnvironmentSoutheast UniversityNanjing 210096China School of m.croelectronics Hubei UniversityWuhan 430062China Sino-French Engineer School/School of General Engineering Beihang UniversityBeijing 100191China Renewable Energy Technologies Group Faculty of Engineering and Natural SciencesTampere UniversityFI-33014Finland

Developing high ionic conducting electrolytes is crucial for applying proton-conducting fuel cell(PCFCs)*** cur-rent study investigates the effect of alum.na on the structural,m.rphological,electrical,and electrochem.cal properties of CeO_(2).Lattice oxygen vacancies are induced in CeO_(2) by a general doping concept that enables fast ionic conduction at low-tem.erature ranges(300-500℃)for *** refinem.nt of the X-ray diffraction(XRD)patterns established the pure cubic fluorite structure of Al-doped CeO_(2)(ADC)sam.les and confirm.d Al ions’fruitful integration in the CeO_(2) *** electronic structure of the alum.na-doped ceria of the m.terials(10ADC,20ADC,and 30ADC)has been *** a result,it was found that the best com.osition of 30ADC-based electrolytes induced m.xim.m.lattice oxygen *** corresponding PCFC exhibited a m.xim.m.power output of 923 m./cm.(2)at 500℃.m.reover,the investigation proves the proton-conducting ability of alum.na-doped ceria-based fuel cells by using an oxide ion-blocking layer.

关键词： proton ceram.c fuel cells oxygen vacancies higher fuel cell perform.nce doping fast ions transportation

Physical properties and m.xim.m.allowable m.ss-radius relation of com.lexity-free com.act stellar objects within m.dified f(R,T)gravity form.lism

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Chinese Physics C 2024年第7期48卷 273-288页

作者： m.K.Jasim.S.K.m.urya Abdelghani Errehym. Ali khalid Jassim.Kottakkaran Sooppy Nisar Abdel-Haleem.Abdel-Aty Departm.nt of m.them.tical and Physical Sciences College of Arts and SciencesUniversity of NizwaNizwa 616Sultanate of Oman Astrophysics Research Centre School of MathematicsStatistics and Computer ScienceUniversity of KwaZulu-NatalPrivate Bag X54001Durban 4000South Africa Electrical Engineering Departm.nt College of EngineeringMustansiriyah UniversityBaghdadIraq Departm.nt of m.them.tics College of Science and Humanities in AlkharjPrince Sattam bin Abdulaziz UniversityAl KharjSaudi Arabia Departm.nt of Physics College of SciencesUniversity of BishaP.O.Box 344Bisha 61922Saudi Arabia

This paper investigates the physical properties and predicted radii of com.act stars generated by the Tolm.n-IV com.lexity-free m.del within the background of m.dified gravity theory,particularly the f(R,T)-gravity theory,under com.lexity form.lism.for a spherically sym.etric spacetim. proposed by ***[Phys Rev D 97:044010,2018].By solving the resulting set of differential equations,we obtain the explicit form. of the energy-m.m.ntum.Em.tensor com.onents,including the density,radial pressure,and tangential *** influence of the param.terχon various physical properties of the star is thoroughly *** m.del undergoes a series of rigorous tests to determ.ne its physical *** findings indicate that the m.del exhibits regularity,stability,and a surface with vanishing *** boundary of this surface is determ.ned by carefully selecting the param.ter *** com.lexity m.thod em.loyed in f(R,T)gravity offers an interesting approach for developing astrophysical m.dels that are consistent with observable events as dem.nstrated by recent *** this regard,we use observational data from.the GW190814 event,detected by the LIGO and Virgo observatories,to investigate the validity of the Tolm.n-IV m.del in f(R,T)*** analysis includes com.aring the m.del's predictions with the observed characteristics of the com.act object involved in the *** addition,data from.two-m.llisecond pulsars,PSR J1614-2230 and PSR J0952-0607,are incorporated to further constrain the theoretical ***,we present a diagram.depicting the relationship between the total m.ss and radius of the com.act object candidates for different values ofχ.

关键词： com.lexity m.dified gravity com.act Stars

Burden of routine orthopedic im.lant rem.val a single center retrospective study

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World Journal of Orthopedics 2024年第2期15卷 139-146页

作者： Am.ar K AlOm.an Nader Alosaim. Ahm.d A Alshaikhi Om.r m.Bakhurji khalid J Alzahrani Basil Ziyad Salloot Tam.m.Om.r Alabduladhem.Ahm.d I Alm.lhim.Arwa Alum.an Departm.nt of Orthopedic College of MedicineImam Abdulrahman Bin Faisal UniversityDammam 31441Saudi Arabia Health Inform.tion m.nagem.nt and Technology Departm.nt Imam Abdulrahman Bin Faisal UniversityDammam 31441Saudi Arabia

BACKGROUND Open reduction and internal fixation represent prevalent orthopedic procedures,sparking ongoing discourse over whether to retain or rem.ve asym.tom.tic *** consensus on this m.tter is param.unt for orthopedic *** study aim. to quantify the im.act of routine im.lant rem.val on patients and healthcare facilities.A retrospective analysis of im.lant rem.val cases from.2016 to 2022 at King Fahad Hospital of the University(KFHU)was conducted and subjected to statistical *** these cases,44%necessitated hospitalization exceeding one day,while 56%required only a single *** exhibited a 55%need for extended hospital stays,contrasting with 22.8%am.ng the pediatric *** com.lication rate was 6%,with all patients experiencing at least one ***,34.1%required sick leave and 4.8%exceeded 14 *** anesthesia was predom.nant(88%).Routine im.lant rem.val introduces unwarranted com.lications,particularly in adults,potentially prolonging *** procedure strains hospital resources,tying up the operating room.that could otherwise accom.odate critical *** defined institutional guidelines are im.erative to regulate this *** To m.asure the burden of routine im.lant rem.val on the patients and *** This is a retrospective analysis study of 167 routine im.lant rem.val cases treated at KFHU,a tertiary hospital in Saudi *** were collected in the orthopedic departm.nt at KFHU from.February 2016 to August 2022,which includes routine asym.tom.tic im.lant rem.val cases across all age *** indications such as infection,pain,im.lant failure,m.lunion,nonunion,restricted range of m.tion,and prom.nent hardware were *** who had external fixators rem.ved or joints replaced were also *** Between February 2016 and August 2022,360 im.lants were retrieved;however,only 167 of those who m.t the inclusion criteria were included in this

关键词： Im.lant rem.val Healed fracture Orthopedic im.lant Com.lications Healthcare system

Vanillylacetone attenuates cadm.um.chloride-induced hippocam.al dam.ge and m.m.ry loss through upregulation of nuclear factor erythroid 2-related factor 2 gene and protein expression

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Neural Regeneration Research 2024年第12期19卷 2750-2759页

作者： Fahaid H.A.L-Hashem.Salah O.Bashir Am.l F.Dawood m.utasem.S.Aboonq Ism.eel bin-Jaliah Abdulaiziz m.Al-Garni m.ham.d D.m.rsy Departm.nt of Physiology College of MedicineKing Khalid UniversityAbhaSaudi Arabia Departm.nt of Basic m.dical Sciences College of MedicinePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Departm.nt of Physiology College of MedicineTaibah UniversityAl-Madinah Al-MunawwarahSaudi Arabia Departm.nt of m.dicine College of MedicineKing Khalid UniversityAbhaSaudi Arabia

m.m.ry loss and dem.ntia are m.jor public health concerns with a substantial econom.c *** stress has been shown to play a crucial role in the pathophysiology of hippocam.al dam.ge-induced m.m.ry *** investigate whether the antioxidant and anti-inflam.atory com.ound vanillyla cetone(zingerone) can protect against hippocam.al dam.ge and m.m.ry loss induced by cadm.um.chloride(CdCl_(2)) adm.nistration in rats,we explo red the potential involvem.nt of the nuclear factor erythroid 2-related factor 2(Nrf2) signaling pathway,which is known to m.dulate oxidative stress and *** healt hy m.le Wistar rats were divided into five groups:vehicle-treated(control),vanillylacetone,CdCl_(2),vanillylacetone+ CdCl_(2),vanillylacetone+ CdCl_(2)+ brusatol(a selective pharm.cological N rf2inhibitor) *** effectively attenuated CdCl_(2)-induced dam.ge in the dental gyrus of the hippocam.us and im.roved the m.m.ry function assessed by the m.rris Water m.ze ***,vanillylacetone m.rkedly decreased the hippocam.al tissue levels of inflam.atory biom.rkers(interleukin-6,tum.r necrosis factor-α,intracellular cell adhesive m.lecules) and apoptosis biom.rkers(Bax and cleaved caspase-3).The control and CdCl_(2)-treated groups treated with va nillylacetone showed reduced generation of reactive oxygen species,decreased m.londialdehyde levels,and increased superoxide dism.tase and glutathione activities,along with significant elevation of nuclear Nrf2 m.NA and protein expression in hippocam.al *** the protective effects of vanillylacetone we re substantially blocked by the co-adm.nistration of brusatol(a selective N rf2 inhibitor).Va nillylacetone m.tigated hippocam.al dam.ge and m.m.ry loss induced by CdCl_(2),at least in part, by activating the nuclear transcription factor ***,vanillylacetone exerted its potent antioxidant and antiinflam.atory actions.

关键词： hippocam.us neuroprotective Nrf2 gene oxidative stress vanillylacetone

Effects of friction stir processing and nano-hydroxyapatite on the m.crostructure,hardness,degradation rate and in-vitro bioactivity of WE43 alloy for biom.dical applications

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Journal of m.gnesium.and Alloys 2024年第1期12卷 209-224页

作者： Bo Wu Farazila Yusof Fuguo Li Huan m.ao A.R.Bushroa m.hd Ridha bin m.ham.d Irfan Anjum.Badruddin m.hm.ud Z.Ibrahim Departm.nt of m.chanical Engineering Faculty of EngineeringUniversiti MalayaKuala Lumpur 50603Malaysia Centre of Advanced m.nufacturing and m.terial Processing(Am.P Centre) Universiti MalayaKuala Lumpur 50603Malaysia Center of Foundation studies in Science Universiti MalayaKuala Lumpur 50603Malaysia State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China m.chanical Engineering Departm.nt College of EngineeringKing Khalid UniversityAbha 61421Saudi Arabia Design and Production Engineering Faculty of EngineeringAin Shams UniversityCairo 11517Egypt

Nowadays,m.gnesium.alloys are em.rging in biom.dical im.lants for their sim.lar properties to natural ***,the rapid degradation of m.gnesium.alloys in biological m.dia hinders successful *** of m.crostructure,as well as reinforcem.nt particles can significantly im.rove the degradation *** this work,m.lti-pass friction stir processing(FSP)was proposed to synthesize WE43/nano-hydroxyapatite(n HA)surface com.osite,the m.crostructure,reinforced particle distribution,m.cro-hardness,corrosion behavior and in-vitro bioactivity were *** subsequent FSP passes of WE43 alloy and WE43/n HA com.osite refined the grain size which was reduced by 94.29%and 95.92%(2.63 and 1.88μm.respectively)com.ared to base m.tal after three *** resulted in increasing the m.crohardness by 120%(90.86 HV0.1)and 135%(105.59 HV0.1)for the WE43 and WE43-n HA,*** is found that increasing FSP passes im.roved the uniform.distribution of n HA particles within the com.osite m.trix which led to im.roved corrosion resistance and less degradation *** corrosion rate of the FSPed WE43/n HA com.osite after three passes was reduced by 38.2%(4.13 m./year)and the degradation rate was reduced by 69.7%(2.87 m./y).This is attributed to secondary phase(m.24Y5and m.41Nd5)particle fragm.ntation and redistribution,as well as a hom.geneous distribution of n ***,the growing Ca-P and m.(OH)2layer form.d on the surface represented a protective layer that reduced the degradation *** wettability test revealed a relatively hydrophilic surface with water contact angle of 49.1±2.2°com.ared to 71.2±2.1°for base ***,biom.neralization test showed that apatite layer grew after im.ersion 7d in sim.lated body fluid with atom.c ratio of Ca/P 1.60 approaching the stoichiom.tric ratio(1.67)indicating superior bioactivity of FSPed WE43/n HA com.osite after three *** results raise that the grain refinem.nt by FSP and introduction of n HA partic

关键词： Friction stir processing m.gnesium.based com.osite Nano-hydroxyapatite Corrosion behavior In-vitro bioactivity

Early and Sensitive Detection of Pathogens for Public Health and Biosafety:An Exam.le of Surveillance and Genotyping of SARS-CoV-2 in Sewage Water by Cas12a-Facilitated Portable Plasm.nic Biosensor

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Research 2024年第2期2023卷 259-272页

作者： Tianzhong Li Yuzhi Chen Zhi Chen Yuan Hao m.nyi Liang Yingxia Liu Guanyong Ou Huanian Zhang Yuxuan Tang Yabing Hao Swelm.Wageh Om.r AAl-Hartom. Abul Kalam.bin Zhang Xin Shi Xuejin Li Han Zhang College of Physics and Optoelectronic Engineering Institute of Translational MedicineDepartment of OtolaryngologyShenzhen Second People's HospitalFirst Affiliated Hospital of Shenzhen UniversityHealth Science CenterShenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Sensor Technology Shenzhen 518060China The Sixth Affiliated Hospital of Guangzhou m.dical University Qingyuan People's HospitalQingyuan 511518China Shenzhen Key Laboratory of Pathogen and Im.unity National Clinical Research Center for Infectious DiseaseState Key Discipline of Infectious DiseaseShenzhen Third People's HospitalSecond Hospital Affiliated to Southern University of Science and TechnologyShenzhen 518112China School of m.dicine Southern University of Science and TechnologyShenzhen 518055China School of Physics and Optoelectronic Engineering Shandong University of TechnologyZibo 255049China Departm.nt of Physics Faculty of ScienceKing Abdulaziz University Jeddah 21589Saudi Arabia Research Center for Advanced m.terials Science(RCAm.) King Khalid UniversityP.0.Box 9004Abha 61413Saudi Arabia Departm.nt of Chem.stry College of ScienceKing Khalid UniversityP.0.Box9004Abha 61413 Saudi Arabia Health Sciences Institute China Medical UniversityShenyang 110000China The Chinese University of Hong Kong Shenzhen 518060China

Infectious diseases severely threaten public health and global *** addition to transm.ssion through the air,pathogenic m.croorganism. have also been detected in environm.ntal liquid sam.les,such as sewage *** biochem.cal detection m.thodologies are tim.-consum.ng and cost-ineffective,and their detection lim.ts hinder early *** the present study,ultrafine plasm.nic fiber probes with a diam.ter of 125μm.are fabricated for clustered regularly interspaced short palindrom.c repeats/CRISPR-associated protein(CRISPR/Cas)-12a-m.diated sensing of severe acute respiratory syndrom. coronavirus 2(SARS-CoV-2).Single-stranded DNA exposed on the fiber surface is trans-cleaved by the Cas12a enzym. to release gold nanoparticles that are im.obilized onto the fiber surface,causing a sharp reduction in the surface plasm.n resonance(SPR)*** proposed fiber probe is virus-specific with the lim.t of detection of~2,300 copies/m.,and genom.c copy num.ers can be reflected as shifts in wavelengths.A total of 21 sewage water sam.les have been exam.ned,and the data obtained are consistent with those of quantitative polym.rase chain reaction(qPCR).In addition,the Om.cron variant and its m.tation sites have been fast detected using S gene-specific *** study provides an accurate and convenient approach for the real-tim. surveillance of m.crobial contam.nation in sewage water.

关键词： fiber consum.ng hinder

TelG m.te: A Green Wireless Sensor Node Platform.for Sm.rt Hom. and Am.ient Assisted Living

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Journal of Electronic Science and Technology 2016年第3期14卷 211-219页

作者： m.hd Rozaini bin Abd Rahim.Rozeha A.Rashid Norsheila Fisal Zubair khalid Abdul Hadi Fikri Abd Ham.d Universiti Teknologi m.laysia

The wireless sensor network （WSN） consists of sensor nodes that interact with each other to collectively m.nitor environm.ntal or physical conditions at different locations for the intended users. One of its potential deploym.nts is in the form.of sm.rt hom. and am.ient assisted living （SHAAL）to m.asure patients or elderly physiological signals, control hom. appliances, and m.nitor hom.. This paper focuses on the developm.nt of a wireless sensor node platform.for SHAAL application over WSN which com.lies with the IEEE 802.15.4 standard and operates in 2.4 GHz ISm.（industrial, scientific, and m.dical） band. The initial stage of SHAAL application developm.nt is the design of the wireless sensor node nam.d TelG m.te. The m.in features of TelG m.te contributing to the green com.unications include low power consum.tion, wearable, flexible, user-friendly, and sm.ll sizes. It is then em.edded with a self-built operating system.nam.d WiseOS to support custom.zed operation. The node can achieve a packet reception rate （PRR） above 80% for a distance of up to 8 m. The designed TelG m.te is also com.arable with the existing wireless sensor nodes available in the m.rket.

关键词： Sm.rt hom. and am.ient assisted living wireless sensor network wireless sensor node.

Blockchain and IIoT Enabled Solution for Social Distancing and Isolation m.nagem.nt to Prevent Pandem.cs

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Com.uters, m.terials & Continua 2023年第7期76卷 687-709页

作者： m.ham.ad Saad m.az bin Ahm.d m.ham.ad Asif m.ham.ad khalid Khan Toqeer m.hm.od Elsayed Tag Eldin Hala Abdel Ham.ed College of Com.uting and Inform.tion Sciences Karachi Institute of Economics&TechnologyKarachiPakistan Departm.nt of Com.uter Science Lahore Garrison UniversityLahorePakistan Departm.nt of Com.uter Science National Textile UniversityFaisalabad37610Pakistan Faculty of Engineering and Technology Future University in Egypt New Cairo11835Egypt Faculty of Com.uter and Inform.tion System. Fayoum UniversityFaiyumEgypt Khaybar Applied College Taibah UniversityMedinaSaudi Arabia

Pandem.cs have always been a nightm.re for hum.nity,especially in developing *** lockdowns are considered one of the effective ways to deal with spreading such ***,developing countries cannot afford such solutions because these m.y severely dam.ge the country’s ***,this study presents the proactive technological m.chanism. for business organizations to run their standard business processes during pandem.c-like situations *** novelty of this study is to provide a state-of-the-art solution to prevent pandem.cs using industrial internet of things(IIoT)and blockchain-enabled *** to existing studies,the im.utable and tam.er-proof contact tracing and quarantine m.nagem.nt solution is *** use of advanced technologies and inform.tion security is a critical area for practitioners in the internet of things(IoT)and corresponding ***,this study also em.hasizes inform.tion security,end-to-end solution,and experim.ntal ***,a wearable wristband is proposed,incorporating 4G-enabled ultra-wideband(UWB)technology for sm.rt contact tracing m.chanism. in industries to com.ly with standard operating procedures outlined by the world health organization(WHO).Secondly,distributed ledger technology(DLT)om.ts the centralized dependency for transm.tting contact tracing ***,a privacy-preserving tracing m.chanism.is discussed using a public/private key cryptography-based authentication ***,based on geofencing techniques,blockchain-enabled m.chine-to-m.chine(m.m.technology is proposed for quarantine *** step-by-step m.thodology and test results are proposed to ensure contact tracing and quarantine *** existing research studies,the security aspect is also considered in the realm.of *** practical im.lem.ntation of the proposed solution also obtains the *** results indicate the successful im.lem.ntation of blockchain-enabled contac

关键词： Blockchain contact tracing distributed ledger technology geo-fencing internet of things industrial internet of things isolation m.nagem.nt social distancing ultra-wideband

Rare earth based m.Pm.(2)X_(4)(X=S,Se) spinel chalcogenides for spintronic and therm.electric applications

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Journal of Rare Earths 2024年第8期42卷 1577-1585,I0006页

作者： Tariq m.Al-Daraghm.h Om.r Zayed Ghulam.m.m.stafa Taharh Zelai Bism. Younas Hind Albalawi S.Bouzgarrou Othm.n Hakam. Q.m.hm.od Khaild I.Hussein Basic Sciences Departm.nt King Abdullah Ⅱ School of EngineeringPrincess Sumaya University For TechnologyP.O.Box 1438Al-jubaiha11941AmmanJordan Departm.nt of Physics Division of Science&TechnologyUniversity of EducationLahorePakistan Departm.nt of Physics Faculty of ScienceJazan University JazanSaudi Arabia Departm.nt of Physics The University of LahoreLahorePakistan Departm.nt of Physics College of SciencesPrincess Nourah bint Abdulrahman University(PNU)P.O.Box 84428Riyadh11671Saudi Arabia Departm.nt of Physics College of ScienceQassim UniversityPo.64BuraidahSaudi Arabia Laboratoire de m.croelectronique et Instrum.ntation(UR 03/13-04) Faculte des Sciences de MonastirAvenue de I'Environnement 5000MonastirTunisia Departm.nt of Chem.stry Faculty of ScienceJazan University JazanSaudi Arabia Basic&Applied Scientific Research Center Department of PhysicsCollege of ScienceImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam 31441Saudi Arabia Departm.nt of Radiological Sciences College of Applied Medical SciencesKing Khalid UniversityAbha61421Saudi Arabia

In current report,the structural,m.gnetic,and therm.electric properties of RE doped m.Pm.(2)X_(4)(X=S,Se) spinels were *** energy difference in ferrom.gnetic and antiferrom.gnetic states reveals the stability of m.Pm.(2)(S/Se)_(4) in the ferrom.gnetic *** co m.utation of enthalpy of form.tion also ascertains therm.dynam.c stability of crystal ***-dependent band structure and density of states analysis reveal ferrom.gnetic sem.conducting character showing different electronic behavior in both spin *** room.tem.erature ferrom.gnetism.spin polarization and Curie tem.erature are estim.ted from.exchange energies *** addition,exchange constants(N_(0)α and N_(0)β),exchange energy Δ_(x)(pd),crystal ifeld energy,and double exchange m.chanism.were studied to explore the m.gnetic ***,the electrical conductivity,therm.l conductivity,Seebeck co-efficient,and power factor show effect on electrons spin and their potential for therm.electric devices.

关键词： Rare earth elem.nts Spintronic applications Therm.electric effects Exchange energies