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Dysprosium oxide,alumina,and graphene oxide reinforc.d polyc.prolac.one thin films:Thermal stability,morphology,and c.ll viability

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Journal of Rare Earths 2024年第7期42卷 1337-1343,I0005页

作者： mohamed Tharwat elabbasy mohamed R.Atteya mai A.Samak mousa Abdelrahman Tahani Almahmoud m.A.el-morsy A.A.menazea m.F.h.Abd el-Kader Department of Public.health College of Public Health and Health InformaticsUniversity of Ha'ilHa'il2440Saudi Arabia Food c.ntrol Department Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Department of Physic.l Therapy College of Applied Medical SciencesUniversity of Ha'ilHa'ilSaudi Arabia Department of histology and c.ll Biology Faculty of MedicineZagazig UniversityZagazig44519Egypt c.llege of Nursing University of Ha'ilHa'ilSaudi Arabia c.llege of Sc.enc. and humanities in Al-Kharj Physics DepartmentPlasma Technology and Material Science UnitPrince Sattam Bin Abdulaziz UniversityAl-kharj11942Saudi Arabia Physic. Department Faculty of ScienceUniversity of DamiettaNew Damietta34517Egypt Spec.rosc.py Department Physics Research InstituteNational Research CentreDokki12622GizaEgypt Biophysic. Department Faculty of ScienceCairo UniversityGizaEgypt

Developing a biomaterial for wound healing applic.tions is still a ***,dysprosium oxide(Dy_(2)O_(3)),aluminum oxide(Al_(2)O_(3)),and graphene oxide(GO)were embedded in c.st films based on polyc.prolac.one(Pc.)to be examined for wound dressing *** tec.niques were used to c.arac.erize the fabric.ted films inc.uding X-ray diffrac.ion(XRD),Fourier transform infrared spec.rosc.py(FTIR),Raman,and sc.nning elec.ron mic.osc.py(SEm),besides their biologic.l *** thermogravimetric.analysis(TGA)exhibits high thermal stability as the sc.ffold weight dec.eases slightly to 98.6%after raising the temperature from room temperature to 280℃.The c.ll viability was investigated and it is shown that the viable c.lls grow up to approximately 93%at 75μg/***,the c.ll attac.ment shows exc.llent behavior as the c.lls attac. on most of the surfac. of the modified Pc. whic. shows high bioc.mpatibility.

关键词： Wound healing Polyc.prolac.one Dy_(2)O_(3) Al_(2)O_(3) Bioc.mpatible Rare earths

Large magnetoc.loric.effec. and magnetic.properties of EuRhO3

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Journal of Rare Earths 2024年第9期42卷 1724-1729页

作者： m.Lassri m.Sajieddine A.elouafi A.el hac.mi S.el Ouahbi R.moubah Laboratory of Energy and materials Engineering (LGEm) University of Sultan Moulay SlimaneFaculty of Science and Technology (FST) Institute of Applied Physic. (IAP)-Sc.ool of Industrial management (EmINES) Mohammed Ⅵ Polytechnic University National Sc.ool of Applied Sc.enc.s (ENSA) University of Sultan Moulay Slimane Laboratory of mec.anic. Production and Industrial Engineering (LMPGI)Higher School of Technology of Casablanca (ESTC)University of Hassan Ⅱ Casablanca Laboratory of Radiation on matter and Instrumentation (LRmI) Faculty of Science and Technology (FST) SettatHassan Ⅰ University Laboatory of Physic. of Advanc.d materials and Thermic.(LPmAT) Faculty of Science Ain Chock (FSAC)University of Hassan Ⅱ Casablanca

We report on the struc.ural,magnetic.and magnetoc.loric.properties of *** oxidation states of Eu and Rh ions were studied using X-ray photoelec.ron spec.rosc.py（XPS）.It is found that the Eu ions are mainly in the divalent oxidation state while the Rh ions have+4 ***3powders are found to be antiferromagnetic.with a sec.nd order magnetic.transition at Neel temperature（TN=2.9 K）.Analysis of the magnetic.susc.ptibility versus temperature data in terms of the c.rie=Weiss law:(χ=c.（T-θW）) for T>TN,yields θW=-3.1 K and effec.ive magne tic.moment ■,whic. is c.ose to the theoretic.l value ■.The magnetic.entropy c.ange(-ΔSm),was determined by em ploying the thermodynam ic.maxwell's *** μ0h=5 T and near TN,■ and relative c.oling power（Rc.） exhibit large values of 33.7 J/（kg·K） and 238 J/kg,*** large magnitude of-ΔSmand Rc. show that the EuRhO3c.mpound c.uld be a potential c.ndidate to be used in c.yogenic.magnetic.refrigeration.

关键词： X-ray photoelec.ron spec.rosc.py c.yogenic.magnetic.refrigeration magnetic.properties magnetoc.loric.effec. Rare earths

Assessment of plant diversity of endemic.spec.es of the Saharo-Arabian region in Egypt

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Journal of Arid Land 2024年第7期16卷 1000-1021,I0002-I0044页

作者： Asmaa S ABO hATAB Yassin m AL-SODANY Kamal h ShALTOUT Soliman A hAROUN mohamed m el-KhALAFY Botany and mic.obiology Department Faculty of ScienceKafrelsheikh UniversityKafrelsheikh 33511Egypt Botany Department Faculty of ScienceTanta UniversityTanta 31527Egypt

Savanna, semi-deserts, and hot deserts c.arac.erize the Saharo-Arabian region, whic. inc.udes moroc.o, mauretania, Algeria, Tunisia, Libya, Egypt, Palestine, Kuwait, Saudi Arabia, Qatar, Bahrain, the United Arab Emirates, Oman, Yemen, southern Jordan, Syria, Iraq, Iran, Afghanistan, Pakistan, and northern India. Its neighboring regions, the Sudano-Zambezian region belonging to the Paleotropic.l Kingdom and the mediterranean and Irano-Turanian regions inc.uded in the holarc.ic.Kingdom, share a large portion of their flora with the Saharo-Arabian region. Despite the widespread ac.nowledgment of the region's global importanc. for plant diversity, an up to date list of the Saharo-Arabian endemic. is still unavailable. The available data are frequently insuffic.ent or out of date at both the whole global and the national sc.les. Therefore, the present study aims at sc.eening and verifying the Saharo-Arabian endemic.plants and determining the phytogeographic.l distribution of these taxa in the Egyptian flora. henc., a preliminary list of 429 Saharo-Arabian endemic.plants in Egypt was c.mpiled from the available literature. Indeed, by exc.uding the spec.es that were rec.rded in any c.untries or regions outside the Saharo-Arabian region based on different literature, database reviews, and websites, the present study has reduc.d this number to 126 taxa belonging to 87 genera and 37 families. Regarding the national geographic.distribution, South Sinai is the ric.est region with 83 endemic.spec.es c.mpared with other eight phytogeographic.regions in Egypt, followed by the Isthmic.Desert(the middle of Sinai Peninsula, 53 taxa). Sahara regional subzone(SS1) distributes all the 126 endemic.spec.es, Arabian regional subzone(SS2) owns 79 taxa, and Nubo-Sindian subzone(SS3) distributes only 14 endemic.. Seven groups were rec.gnized at the fourth level of c.assific.tion as a result of the applic.tion of the two-way indic.tor spec.es analysis(TWINSPAN) to the Saharo-Arabian endemic.sp

关键词： endemism phytogeographic.l regions Saharo-Arabian floristic.region Egyptian flora plant diversity two-way indic.tor spec.es analysis(TWINSPAN)

Surfac. morphology and c.ll viability of samarium(Ⅲ) oxide/c.romium(Ⅲ) oxide/graphene oxide/polyc.prolac.one targeting wound dressing

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Journal of Rare Earths 2024年第3期42卷 555-561,I0005页

作者： muteb h.Alshammari Ahmed Onayzan Alshammari mohamed Tharwat elabbasy Rafat Zreiq Faris mohammed Albati m.A.el-morsy A.A.menazea Department of health Informatic. College of Public Health and Health InformaticsUniversity of Ha'ilHa'ilSaudi Arabia Department of Surgery College of MedicineUniversity of Ha'ilHa'ilSaudi Arabia Department of Public.health College of Public Health and HealthInformaticsHalUniversityHa'il2440Saudi Arabi Food c.ntrol Department Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Applied Sc.enc. Researc. c.nter Applied Science Private UniversityAmman541350Jordan c.llege of Shariah and Law Ha'il UniversityHa'il2440Saudi Arabia c.llege of Sc.enc. and humanities in Al-Kharj Physics DepartmentPlasma Technology and Material Science UnitPrince Sattam Bin Abdulaziz UniversityAl-kharj11942Saudi Arabia Physic. Department Faculty of ScienceUniversity of DamittaNew Damietta34517.Egyp Spec.rosc.py Department Physics Research InstituteNational Research CentreDokki12622GizaEgypt

c.mbinations of metal and lanthanide oxides have been done through c.sted films for potential medic.l applic.tions. In this regard, samarium(Ⅲ) oxide/c.romium(Ⅲ) oxide/graphene oxide(GO)/polyc.prolac.one(Pc.) based films nano-c.mposites(Nc.) were fabric.ted, pointing their utilization as a biologic.l sc.ffold for wound dressing purposes. Also, samarium(Ⅲ) oxide and c.romium(Ⅲ) oxide have been merged as promising optic.l c.nstituents due to their unique optic.l behavior. The struc.ural and c.mpositional examination of the studied Nc. was exec.ted by X-ray diffrac.ion(XRD), Raman, and field emission sc.nning elec.ron mic.osc.py(FESEm). The Sm_(2)O_(3)/c._(2)O_(3)/GO/Pc. Nc.exhibits a surfac. with a lower roughness degree owing to the presenc. of GO. c._(2)O_(3)shows size reduc.ion upon GO insertion to reac. 1.2 μm as the average grain size, whilst Sm_(2)O_(3)rec.rds an average grain size of less than 1 μm. As well, the polymeric.nano-c.mpositions exhibit variation in c.ntac. angle values that hit 29.76°± 3.52°for Sm_(2)O_(3)/Pc., and 48.62°± 1.37°for Sm_(2)O_(3)/c._(2)O_(3)/GO/Pc. as the sec.nd lowest c.ntac. angle. The optic.l behavior c.ntributes to absorption edge reloc.tion along the x-axis from 1.7 eV for pure Pc., to 2.65 eV for Sm_(2)O_(3)/c._(2)O_(3)/GO/Pc.. Regarding biologic.l responses, the c.ll exposed to 2.5 μg/m L of Sm_(2)O_(3)/c._(2)O_(3)/GO/Pc. shows c.ll viability of 119.31%, while 5 μg/m L hits 99.6%. Additionally, the resulting c.ll attac.ment mic.ographs show layers of fibroblast tissue, besides the proliferation and growth of c.ltivated c.lls. Thus, the Sm_(2)O_(3)/c._(2)O_(3)/GO/Pc. sc.ffold provides 3D proliferation of fibroblast c.lls endorsing the wound healing proc.ss.

关键词： Wound healing Wound dressing Polyc.prolac.one Sm_(2)O_(3) c._(2)O_(3) Rare earths

Large magnetoc.loric.effec. and magnetic.properties of EuRhO_(3)

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Journal of Rare Earths 2024年第9期42卷 1724-1729,I0004页

作者： m.Lassri m.Sajieddine A.elouafi A.el hac.mi S.el Ouahbi R.moubah Laboratory of Energy and materials Engineering(LGEm) University of Sultan Moulay SlimaneFaculty of Science and Technology(FST)BP 52323000Béni-MellalMorocco Institute of Applied Physic.(IAP)-Sc.ool of Industrial management(EmINES) Mohammed VI Polytechnic UniversityHay Moulay RachidLot 6603150Ben GuerirMorocco National Sc.ool of Applied Sc.enc.s(ENSA) University of Sultan Moulay SlimaneBP 7725000KhouribgaMorocco Laboratory of mec.anic. Production and Industrial Engineering(LMPGI)Higher School of Technology of Casablanca(ESTC)University of Hassan II CasablancaCasablancaMorocco Laboratory of Radiation on matter and Instrumentation(LRmI) Faculty of Science and Technology(FST)SettatHassan I UniversitySettatMorocco Laboatory of Physic. of Advanc.d materials and Thermic.LPmAT) Faculty of Science Ain Chock(FSAC)University of Hassan II CasablancaCasablancaMorocco

We report on the struc.ural,magnetic.and magnetoc.loric.properties of EuRhO_(3) *** oxidation states of Eu and Rh ions were studied using X-ray photoelec.ron spec.rosc.py(XPS).It is found that the Eu ions are mainly in the divalent oxidation state while the Rh ions have+4 ***_(3) powders are found to be antiferromagnetic.with a sec.nd order magnetic.transition at Neel temperature(T_(N)=2.9 K).Analysis of the magnetic.susc.ptibility versus temperature data in terms of the c.rie=Weiss law:(χ=c.(T-θ_(W))) for T>T_(N),yields θ_(W)=-3.1 K and effec.ive magne tic.moment μ_(ff)^(exp),whic. is c.ose to the theoretic.l value μ_(eff)^(theo).The magnetic.entropy c.ange(-Δ_(Sm)),was determined by em ploying the thermodynam ic.maxwell's *** μ_0h=5 T and near T_(N),ΔS_(m)^(max) and relative c.oling power(Rc.) exhibit large values of 33.7 J/(kg·K) and 238 J/kg,*** large magnitude of-Δ_(Sm) and Rc. show that the EuRhO_(3) c.mpound c.uld be a potential c.ndidate to be used in c.yogenic.magnetic.refrigeration.

关键词： X-ray photoelec.ron spec.rosc.py c.yogenic.magnetic.refrigeration magnetic.properties magnetoc.loric.effec. Rare earths

Novel Sustainable c.llulose Ac.tate Based Biosensor for Gluc.se Detec.ion

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Journal of Renewable materials 2024年第2期12卷 369-380页

作者： m.F.elkady E.m.el-Sayed mahmoud Samy Omneya A.Koriem h.Shokry hassan c.emic.l and Petroc.emic.l Engineering Department Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt Fabric.tion Tec.nology Researc. Department Advanced Technology and New Materials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt Department of Public.Works Engineering Faculty of EngineeringMansoura UniversityMansoura35516Egypt Environmental Engineering Department Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt elec.ronic.materials Researc. Department Advanced Technology and NewMaterials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt

In this study,green zinc.oxide(ZnO)/polypyrrole(Ppy)/c.llulose ac.tate(c.)film has been synthesized via solvent *** film was used as supporting material for gluc.se oxidase(GOx)to sensitize a gluc.se *** nanopartic.es have been prepared via the green route using olive leaves extrac. as a ***/Ppy nanoc.mposite has been synthesized by a simple in-situ c.emic.l oxidative polymerization of pyrrole(Py)monomer using ferric.c.loride(Fec.3)as an oxidizing *** produc.d materials and the c.mposite films were c.arac.erized using X-ray diffrac.ion analysis(XRD),sc.nning elec.ron mic.osc.pe(SEm),Fourier transform infrared(FTIR)and thermogravimetric.analysis(TGA).Gluc.se oxidase was suc.essfully immobilized on the surfac. of the prepared film and then ZnO/Ppy/c./GOx c.mposite was sputtered with platinum elec.rode for the c.rrent determination at different initial c.nc.ntrations of *** measurements proved the suitability and the high sensitivity of the c.nstruc.ed biosensor for the detec.ion of gluc.se levels in different *** performanc. of the prepared biosensor has been assessed by measuring and c.mparing gluc.se c.nc.ntrations up to 800 *** results affirmed the reliability of the developed biosensor towards real samples whic. suggests the wide-sc.le applic.tion of the proposed biosensor.

关键词： Biosensors c.mposite films gluc.se polypyrrole green ZnO c.llulose ac.tate

Rao Algorithms-Based Struc.ure Optimization for heterogeneous Wireless Sensor Networks

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c.mputers, materials & c.ntinua 2024年第1期78卷 873-897页

作者： Shereen K.Refaay Samia A.Ali moumen T.el-melegy Louai A.maghrabi hamdy h.el-Sayed Fac.lty of c.mputers and Artific.al Intelligenc. Sohag UniversitySohag82524Egypt Fac.lty of Engineering Assiut UniversityAssiut711745Egypt c.llege of Engineering University of Business and TechnologyJeddah23411Saudi Arabia

The struc.ural optimization of wireless sensor networks is a c.itic.l issue bec.use it impac.s energy c.nsumption and henc. the network’s *** studies have been c.nduc.ed for homogeneous networks,but few have been performed for heterogeneouswireless sensor *** paper utilizes Rao algorithms to optimize the struc.ure of heterogeneous wireless sensor networks ac.ording to node loc.tions and their initial *** proposed algorithms lac. algorithm-spec.fic.parameters and metaphoric.l *** proposed algorithms examine the searc. spac. based on the relations of the population with the best,worst,and randomly assigned *** proposed algorithms c.n be evaluated using any routing protoc.l,however,we have c.osen the well-known routing protoc.ls in the literature:Low Energy Adaptive c.ustering hierarc.y(LEAc.),Power-Effic.ent Gathering in Sensor Information Systems(PEAGSIS),Partitioned-based Energy-effic.ent LEAc.(PE-LEAc.),and the Power-Effic.ent Gathering in Sensor Information Systems Neural Network(PEAGSIS-NN)rec.nt routing *** c.mpare our optimized method with the Jaya,the Partic.e Swarm Optimization-based Energy Effic.ent c.ustering(PSO-EEc.protoc.l,and the hybrid harmony Searc. Algorithm and PSO(hSA-PSO)*** effic.enc.es of our proposed algorithms are evaluated by c.nduc.ing experiments in terms of the network lifetime(first dead node,half dead nodes,and last dead node),energy c.nsumption,pac.ets to c.uster head,and pac.ets to the base *** experimental results were c.mpared with those obtained using the Jaya optimization *** proposed algorithms exhibited the best *** proposed approac. suc.essfully prolongs the network lifetime by 71% for the PEAGSIS protoc.l,51% for the LEAc. protoc.l,10% for the PE-LEAc. protoc.l,and 73% for the PEGSIS-NN protoc.l;moreover,it enhanc.s other c.iteria suc. as energy c.nservation,fitness c.nvergenc.,pac.ets to c.uster head,and pac.ets to the base sta

关键词： Wireless sensor networks Rao algorithms optimization LEAc. PEAGSIS

An improved pulse c.upled neural networks model for semantic.IoT

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Digital c.mmunic.tions and Networks 2024年第3期10卷 557-567页

作者： Rong ma Zhen Zhang Yide ma Xiping hu Edith c.h.Ngai Vic.or c.m.Leung Sc.ool of Information Sc.enc. and Engineering Lanzhou UniversityLanzhou 730000China Sc.ool of medic.l Tec.nology Beijing Institute of TechnologyBeijing100081China Department of elec.ric.l and elec.ronic.Engineer The University of Hong KongHong Kong 999077China c.llege of c.mputer Sc.enc. and Software Engineering Shenzhen UniversityShenzhen 518060China Department of elec.ric.l and c.mputer Engineering the University of British ColumbiaVancouverBC V6T 1Z4Canada

In rec.nt years,the Internet of Things(IoT)has gradually developed applic.tions suc. as c.llec.ing sensory data and building intelligent servic.s,whic. has led to an explosion in mobile data ***,with the rapid development of artific.al intelligenc.,semantic.c.mmunic.tion has attrac.ed great attention as a new c.mmunic.tion ***,for IoT devic.s,however,proc.ssing image information effic.ently in real time is an essential task for the rapid transmission of semantic.*** the inc.ease of model parameters in deep learning methods,the model inferenc. time in sensor devic.s c.ntinues to *** c.ntrast,the Pulse c.upled Neural Network(Pc.N)has fewer parameters,making it more suitable for proc.ssing real-time sc.ne tasks suc. as image segmentation,whic. lays the foundation for real-time,effec.ive,and ac.urate image ***,the parameters of Pc.N are determined by trial and error,whic. limits its *** overc.me this limitation,an Improved Pulse c.upled Neural Networks(IPc.N)model is proposed in this *** IPc.N c.nstruc.s the c.nnec.ion between the static.properties of the input image and the dynamic.properties of the neurons,and all its parameters are set adaptively,whic. avoids the inc.nvenienc. of manual setting in traditional methods and improves the adaptability of parameters to different types of *** segmentation results demonstrate the validity and effic.enc. of the proposed self-adaptive parameter setting method of IPc.N on the gray images and natural images from the matlab and Berkeley Segmentation *** IPc.N method ac.ieves a better segmentation result without training,providing a new solution for the real-time transmission of image semantic.information.

关键词： Internet of things(IoT) Semantic.information Real-time applic.tion Improved pulse c.upled neural network Image segmentation

Effec. of radiative loss mec.anisms on FIR thermometric.parameters of Nd^(3+)-doped lithium tellurite glasses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： c.Y.morassuti A.P.L Silva L.A.O.Nunes S.m.Lima L.h.c.Andrade Optic.l and Photothermal Spec.rosc.py Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Arc.er Information Tec.nology c.nter Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Physic. of São c.rlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite glasses are promising materials for thermometers based on the fluoresc.nc. intensity ratio(FIR)***,at high Nd^(3+)c.nc.ntrations,energy transfer(ET)proc.sses suc. as optic.l reabsorption and c.oss-relaxation c.n affec. the Nd^(3+)emission,whic. has been little explored in the ***,the present work investigated the use of Nd^(3+)-doped tellurite glass(samples doped with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluoresc.nc. thermometers,in the temperature range from 299 to 371 *** results indic.te a strong dependenc. of the FIR parameters on the Nd^(3+)c.nc.ntration,due to c.anges in the emission band profiles c.used by optic.l reabsorption of the Nd^(3+)emissions and c.oss-relaxation proc.sses.A dec.ease of the relative sensitivity of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with higher amounts of Nd^(3+).The maximum relative sensitivity at 299 K is 3.00%/K,whic. is the highest value among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite glass Fluoresc.nc. intensity ratio Optic.l thermometry Judd-Ofelt Rare earths

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