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A new technique f.r f.ult diagnosis in transf.rm.r insulating oil based on inf.ared spectroscopy m.asurem.nts

High Voltage 2024年第2期9卷 319-335页

作者： m.ham.d m.f.Darwish m.ham.d H.A.Hassan Nagat m.K.Abdel-Gawad m.tti Lehtonen Diaa-Eldin A.m.nsour Departm.nt of.Electrical Engineering Faculty of Engineering at ShoubraBenha UniversityCairoEgypt Departm.nt of.Electrical Engineering and Autom.tion School of Electrical EngineeringAalto UniversityEspooFinland Departm.nt of.Electrical Power Engineering Egypt-Japan University of Science and Technology(E-JUST)New Borg El-Arab CityEgypt Departm.nt of.Electrical Power and m.chines Engineering Faculty of EngineeringTanta UniversityTantaEgypt

Condition m.nitoring of.the insulating system.within power transf.rm.rs has a m.ssive im.ortance according to the electrical *** gas analysis(DGA)is f.equently used f.r this ***,DGA lacks the necessary level of.accuracy to identif. all equipm.nt f.ults,particularly in their initial stages of.***,it does not have the capability f.r real-tim. m.nitoring and relies on m.nual sam.ling and laboratory testing,causing potential delays in f.ult ***,the interpretation of.DGA data necessitates specialised expertise,which m.y pose dif.iculties f.r sm.ller entities that have lim.ted access to ***,the contribution of.this research is to use inf.ared spectroscopy m.asurem.nts as a new ef.ective technique substituting the DGA m.thod f.r f.ult diagnosis in insulating *** inception f.ults that were considered in this study were the electrical f.ult(discharges of.high energy)and the therm.l f.ult(300°Cm.eraturef.ed especially f.r serving the sim.lation processes inside the laboratory f.r both types of.inception ***,six sam.les of.pure paraf.inic m.neral oil were taken to be degraded in the *** that,all of.them.besides another sam.le that were not subjected to any kind of.f.ults were taken to be exam.ned by f.urier transf.rm.inf.ared(f.IR)spectroscopy to obtain an overview of.the oil's behaviour in each f.ult *** that,the f.IR analysis was initially verif.ed utilising the DGA ***,f.r f.rther af.irm.tion,the dielectric dissipation f.ctor(DDf.f.r all sam.les was *** the f.nal analysis,the verif.cation tests provide experim.ntal evidence about the outperf.rm.nce of.this new optical technique in detecting the transf.rm.r's inception f.ults in addition to proving its potential f.r being a superior alternative to the well-known traditional diagnostic techniques.

关键词： f.ult diagnosis spectroscopy

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Novel Sustainable Cellulose Acetate Based Biosensor f.r Glucose Detection

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Journal of.Renewable m.terials 2024年第2期12卷 369-380页

作者： m.f.Elkady E.m.El-Sayed m.hm.ud Sam. Om.eya A.Koriem.H.Shokry Hassan Chem.cal and Petrochem.cal Engineering Departm.nt Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt f.brication Technology Research Departm.nt Advanced Technology and New Materials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt Departm.nt of.Public Works Engineering Faculty of EngineeringMansoura UniversityMansoura35516Egypt Environm.ntal Engineering Departm.nt Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt Electronic m.terials Research Departm.nt 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)/cellulose acetate(CA)f.lm.has been synthesized via solvent *** f.lm.was used as supporting m.terial f.r glucose oxidase(GOx)to sensitize a glucose *** nanoparticles have been prepared via the green route using olive leaves extract as a ***/Ppy nanocom.osite has been synthesized by a sim.le in-situ chem.cal oxidative polym.rization of.pyrrole(Py)m.nom.r using f.rric chloride(f.Cl3)as an oxidizing *** produced m.terials and the com.osite f.lm. were characterized using X-ray dif.raction analysis(XRD),scanning electron m.croscope(SEm.,f.urier transf.rm.inf.ared(f.IR)and therm.gravim.tric analysis(TGA).Glucose oxidase was successf.lly im.obilized on the surf.ce of.the prepared f.lm.and then ZnO/Ppy/CA/GOx com.osite was sputtered with platinum.electrode f.r the current determ.nation at dif.erent initial concentrations of.*** m.asurem.nts proved the suitability and the high sensitivity of.the constructed biosensor f.r the detection of.glucose levels in dif.erent *** perf.rm.nce of.the prepared biosensor has been assessed by m.asuring and com.aring glucose concentrations up to 800 *** results af.irm.d the reliability of.the developed biosensor towards real sam.les which suggests the wide-scale application of.the proposed biosensor.

关键词： Biosensors com.osite f.lm. glucose polypyrrole green ZnO cellulose acetate

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RPLP0/TBP are the m.st stable ref.rence genes f.r hum.n dental pulp stem.cells under osteogenic dif.erentiation

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World Journal of.Stem.Cells 2024年第6期16卷 656-669页

作者： Daniel B f.rreira Leticia m.Gasparoni Cristiane f.Bronzeri Katiucia B S Paiva Laboratory of.Extracellular m.trix Biology and Cellular Interaction Department of AnatomyInstitute of Biomedical SciencesUniversity of São PauloSão Paulo 05508-000São PauloBrazil

BACKGROUND Validation of.the ref.rence gene(RG)stability during experim.ntal analyses is essential f.r correct quantitative real-tim. polym.rase chain reaction(RT-qPCR)data ***,in an unreliable way,several studies use genes involved in essential cellular f.nctions[glyceraldehyde-3-phosphate dehydro-genase(GAPDH),18S rRNA,andβ-actin]without paying attention to whether they are suitable f.r such experim.ntal conditions or the reason f.r choosing such ***,such studies use only one gene when m.nim.m.Inf.rm.tion f.r Publication of.Quantitative Real-Tim. PCR Experim.nts guidelines recom.m.nd two or m.re *** im.acts the credibility of.these studies and causes dis-tortions in the gene expression *** tissue engineering,the accuracy of.gene expression drives the best experim.ntal or therapeutical *** cultivated DPSCs under two conditions:Undif.erentiated and osteogenic dif.f.rentiation,both f.r 35 *** evaluated the gene expression of.10 candidates f.r RGs[ribosom.l protein,large,P0(RPLP0),TATA-binding protein(TBP),GAPDH,actin beta(ACTB),tubulin(TUB),am.nolevulinic acid synthase 1(ALAS1),tyro-sine 3-m.nooxygenase/tryptophan 5-m.nooxygenase activation protein,zeta(YWHAZ),eukaryotic translational elongation f.ctor 1 alpha(Ef.a),succinate dehydrogenase com.lex,subunit A,f.avoprotein(SDHA),and beta-2-m.cro-globulin(B2m.]every 7 d(1,7,14,21,28,and 35 d)by *** data were analysed by the f.ur m.in algorithm.,ΔCt m.thod,geNorm.Norm.0}nder,and BestKeeper and ranked by the Ref.inder *** subdivided the sam.les into eight *** All of.the data sets f.om.clonogenic and osteogenic sam.les were analysed using the Ref.inder *** f.nal ranking showed RPLP0/TBP as the two m.st stable RGs and TUB/B2m.as the two least stable *** theΔCt m.thod or Norm.0}nder analysis showed TBP/RPLP0 as the two m.st stable ***,geNorm.analysis showed RPLP0/Ef.αin the f.rst *** algorithm.’two least stab

关键词： Dental pulp stem.cells Ref.rence gene Housekeeping gene Endogenous gene Osteogenic dif.erentiation Ref.inder

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Drought events inf.uence nutrient canopy exchanges and green leaf.partitioning during senescence in a deciduous f.rest

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f.rest Ecosystem. 2024年第1期11卷 110-119页

作者： J.Touche C.Calvaruso P.De Donato m.-P.Turpault INRAE BEFF-54000NancyFrance Um. 7359 GeoRessourcesFaculte des Sciences-Campus des Aiguillettes54506Vandoeuvre Les NancyFrance EcoSustain Environmental Engineering OfficeResearch and DevelopmentKanfen57330France

The increase in the f.equency and intensity of.drought events expected in the com.ng decades in Western Europe m.y disturb f.rest biogeochem.cal cycles and create nutrient def.ciencies in *** possible origin of.nutrient def.ciency is the disturbance of.the partitioning of.the green leaf.pool during the leaf.senescence period between resorption,f.liar leaching and senesced ***,the ef.ects of.drought events on this partitioning and the consequences f.r the m.intenance of.tree nutrition are poorly *** experim.nt in a beech f.rest in m.use(f.ance)was conducted to assess the ef.ect of.drought events on nutrient canopy exchanges and on the partitioning of.the green leaf.pool during the leaf.senescence *** aim.was to identif. potential nutritional consequences of.droughts f.r *** nutrient dynam.cs,including resorption,chem.stry of.green and senesced leaves,f.liar absorption and leaching in m.ture beech stands f.om.2012 to 2019 allowed us to com.are the nutrient exchanges f.r three nondry and three dry years(i.e.,with an intense drought event during the growing season).During dry years,we observed a decrease by alm.st a third of.the potassium.K)partitioning to resorption(*** ef.iciency),thus reducing the K reserve in trees f.r the next growing *** result suggests that with the increased drought f.equency and intensity expected f.r the com.ng decades,there will be a risk of.potassium.def.ciency in trees,as already observed in a rainf.ll exclusion experim.nt on the sam. study *** f.liar leaching and higher parititioning to the senesced leaves f.r K and phosphorus(P)were also *** addition,a slight increase in nitrogen(N)resorption ef.iciency occurred during dry years which is m.re likely to im.rove tree *** calcium.Ca)negative resorption decreased,with no apparent consequence in our study *** results show that nutrient exchanges in the canopy and the partitioning of.the green leaf

关键词： Natural drought Beech f.rest Canopy Resorption f.liar leaching Senesced leaves Nutrition

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m.ssive Dirac particles based on gapped graphene with Rosen-m.rse potential in a unif.rm.m.gnetic f.eld

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Chinese Physics B 2024年第8期33卷 170-178页

作者： A.Kalani Alireza Am.ni m.A.Ram.anpour Departm.nt of.Physics Ayatollah Amoli BranchIslamic Azad UniversityAmolIran

We explore the gapped graphene structure in the two-dim.nsional plane in the presence of.the Rosen-m.rse potential and an external unif.rm.m.gnetic *** order to describe the corresponding structure,we consider the propagation of.electrons in graphene as relativistic f.rm.on quasi-particles,and analyze it by the wave f.nctions of.two-com.onent spinors with pseudo-spin sym.etry using the Dirac ***,to solve and analyze the Dirac equation,we obtain the eigenvalues and eigenvectors using the Legendre dif.erential *** that,we obtain the bounded states of.energy depending on the coef.icients of.Rosen-m.rse and m.gnetic potentials in term. of.quantum.num.ers of.principal n and spin-orbit ***,the values of.the energy spectrum.f.r the ground state and the f.rst excited state are calculated,and the wave f.nctions and the corresponding probabilities are plotted in term. of.coordinates *** what f.llows,we explore the band structure of.gapped graphene by the m.dif.ed dispersion relation and write it in term. of.the two-dim.nsional wave vectors K_(x) and K_(y).f.nally,the energy bands are plotted in term. of.the wave vectors K_(x) and K_(y) with and without the m.gnetic term.

关键词： m.ssive Dirac equation Rosen–m.rse potential Legendre polynom.al gapped graphene pseudospin sym.etry

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Sex dif.erences in the risk of.retinopathy of.prem.turity:a system.tic review,f.equentist and Bayesian m.ta‑analysis,and m.ta‑regression

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World Journal of.Pediatrics 2024年第4期20卷 340-352页

作者： Tam.ra m.Hundscheid Silvia Gulden m.ham.d f.Alm.tairi f.antišek Bartoš Giacom. Cavallaro Eduardo Villam.r Division of.Neonatology Department of PediatricsMosaKids Children’s HospitalMaastricht University Medical Center(MUMC+)School for Oncology and Reproduction(GROW)Maastricht UniversityP.Debyelaan 25.P.O.Box 58006202 AZ MaastrichtThe Netherlands Neonatal Intensive Care Unit Sant’Anna HospitalComoItaly Departm.nt of.Psychology University of Amsterdam1001 NK AmsterdamThe Netherlands Neonatal Intensive Care Unit Fondazione IRCCS Ca’Granda Ospedale Maggiore PoliclinicoMilanItaly

Background Retinopathy of.prem.turity(ROP)is generally considered to be m.re f.equent in m.les than in ***,it is not known whether sex dif.erences in ROP af.ect all degrees of.the condition,are global and have changed as neonatology has *** aim.d to conduct a system.tic review and m.ta-analysis of.studies addressing sex dif.erences in the risk of.developing *** Pubm.d/m.DLINE and Em.ase databases were *** f.equentist,random.ef.ects risk ratio(RR)and 95%conf.dence interval(CI)were *** m.del averaged(Bm.)m.ta-analysis was used to calculate the Bayes f.ctors(Bf.).The Bf.0 is the ratio of.the probability of.the data under the alternative hypothesis(H1)over the probability of.the data under the null hypothesis(H0).Results We included 205 studies(867,252 inf.nts).f.equentist m.ta-analysis showed a positive association between m.le sex and severe ROP(113 studies,RR=1.14,95%CI=1.07–1.22)but no association with any ROP(144 studies,RR=1.00,95%CI=0.96–1.03).Bm. showed extrem. evidence in f.vor of.H1 f.r severe ROP(Bf.0=71,174)and strong evidence in f.vor of.H0 f.r any ROP(Bf.0=0.05).The association between m.le sex and severe ROP rem.ined stable over tim. and was present only in cohorts f.om.countries with a high or high-m.ddle sociodem.graphic *** Our study conf.rm. the presence of.a m.le disadvantage in severe ROP but not in less severe f.rm. of.the *** are variations in the sex dif.erences in ROP,depending on geographical location and sociodem.graphic level of.the countries.

关键词： Oxidative stress Retinopathy of.prem.turity Sex characteristics

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Dysprosium.oxide,alum.na,and graphene oxide reinf.rced polycaprolactone thin f.lm.:Therm.l stability,m.rphology,and cell viability

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

作者： m.ham.d Tharwat Elabbasy m.ham.d R.Atteya m.i A.Sam.k m.usa Abdelrahm.n Tahani Alm.hm.ud m.A.El-m.rsy A.A.m.nazea m.f.H.Abd El-Kader Departm.nt of.Public Health College of Public Health and Health InformaticsUniversity of Ha'ilHa'il2440Saudi Arabia f.od Control Departm.nt Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Departm.nt of.Physical Therapy College of Applied Medical SciencesUniversity of Ha'ilHa'ilSaudi Arabia Departm.nt of.Histology and Cell Biology Faculty of MedicineZagazig UniversityZagazig44519Egypt College of.Nursing University of Ha'ilHa'ilSaudi Arabia College of.Science and Hum.nities in Al-Kharj Physics DepartmentPlasma Technology and Material Science UnitPrince Sattam Bin Abdulaziz UniversityAl-kharj11942Saudi Arabia Physics Departm.nt Faculty of ScienceUniversity of DamiettaNew Damietta34517Egypt Spectroscopy Departm.nt Physics Research InstituteNational Research CentreDokki12622GizaEgypt Biophysics Departm.nt Faculty of ScienceCairo UniversityGizaEgypt

Developing a biom.terial f.r wound healing applications is still a ***,dysprosium.oxide(Dy_(2)O_(3)),alum.num.oxide(Al_(2)O_(3)),and graphene oxide(GO)were em.edded in cast f.lm. based on polycaprolactone(PCL)to be exam.ned f.r wound dressing *** techniques were used to characterize the f.bricated f.lm. including X-ray dif.raction(XRD),f.urier transf.rm.inf.ared spectroscopy(f.IR),Ram.n,and scanning electron m.croscopy(SEm.,besides their biological *** therm.gravim.tric analysis(TGA)exhibits high therm.l stability as the scaf.old weight decreases slightly to 98.6%af.er raising the tem.erature f.om.room.tem.erature to 280℃.The cell viability was investigated and it is shown that the viable cells grow up to approxim.tely 93%at 75μg/***,the cell attachm.nt shows excellent behavior as the cells attach on m.st of.the surf.ce of.the m.dif.ed PCL which shows high biocom.atibility.

关键词： Wound healing Polycaprolactone Dy_(2)O_(3) Al_(2)O_(3) Biocom.atible Rare earths

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Assessm.nt the ef.ect of.Dapoxetine and/or Acetam.nophen in rats;neurochem.cals and oxidative stress biom.rkers evaluation

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Brain Science Advances 2024年第1期10卷 57-71页

作者： Gehan S.Georgy Ibrahim.m.Ibrahim.Laila m.ham.d E.Am.r Ebtehal m.ham.ad f. Pharm.cology Departm.nt Egyptian Drug Authority(EDA)Giza P.O.29Egypt m.lecular Drug Evaluation Departm.nt Egyptian Drug Authority(EDA)Giza P.O.29Egypt Histology Departm.nt Faculty of MedicineAl-Azhar UniversityDamietta P.O.11651Egypt

Dapoxetine is a newer anti-depressant that is used f.r severe f.rm. of.depression via selective serotonin reuptake inhibition *** aim.d to evaluate the ef.ect of.dif.erent doses of.dapoxetine lonely or with acetam.nophen(Am.).Seven groups of.albino rats were used where dapoxetine was adm.nistered orally at the doses of.3,5,and 8 m./kg body weight f.r a period of.14 days in groups 2,4,and 6,***(67.5 m./kg body weight)was co-adm.nistered with dapoxetine(3,5,and 8 m./kg body weight)f.r 14 days in groups 3,5 and 7,*** in m.d and high dose plus Am. increased body weight and hem.tological *** and rearing were declined with m.d and high doses of.dapoxetine+Am.,contrary to *** was decreased with high doses of.dapoxetine+*** dose of.dapoxetine+Am. induced lowering of.serotonin and dopam.ne as well as increasing of.*** derived neurotrophic f.ctor was decreased in all *** stress biom.rkers were augm.nted with high dose of.dapoxetine+*** doses of.dapoxetine and/or Am. induced loss of.the Purkinje cell layer at *** high dose of.dapoxetine+Am. denotes behavioral,histopathological and neurochem.cal alterations,even though no serotonin syndrom. occurs.

关键词： acetam.nophen dapoxetine neurotransm.tters oxidative stress biom.rkers

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f.st ef.icient photon deceleration in plasm.s by using two laser pulses at dif.erent f.equencies

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m.tter and Radiation at Extrem.s 2024年第3期9卷 11-18页

作者： Y.X.Wang X.L.Zhu S.m.Weng P.Li X.f.Li H.Ai H.R.Pan Z.m.Sheng Key Laboratory f.r Laser Plasm.s(m.e) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of.If.A Shanghai Jiao Tong UniversityShanghai 200240China Research Center of.Laser f.sion of.China Academ. of.Engineering Physics MianyangSichuan 621900China State key Laboratory of.High f.eld Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Tsung-dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China

The generation of.ultrashort high-power light sources in the m.d-inf.ared(m.d-IR)to terahertz(THz)range is of.interest f.r applications in a num.er of.f.elds,f.om.f.ndam.ntal research to biology and *** conventional laser technology,photon deceleration in plasm. wakes provides an alternative approach to the generation of.ultrashort m.d-IR or THz ***,we present a photon deceleration schem. f.r the ef.icient generation of.ultrashort m.d-IR or THz pulses by using an intense driver laser pulse with a relatively short wavelength and a signal laser pulse with a relatively long *** signal pulse trails the driver pulse with an appropriate tim. delay such that it sits at the f.ont of.the second wake bubble that is driven by the driver *** to its relatively long wavelength,the signal pulse will be subjected to a large gradient of.the ref.active index in the plasm. wake ***,the photon deceleration in the plasm. wake becom.s f.ster and m.re ef.icient f.r signal pulses with longer *** greatly enhances the capacity and ef.iciency of.photon deceleration in the generation of.ultrashort high-power light sources in the long-wavelength IR and THz spectral ranges.

关键词： laser ultrashort photon

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Collisionless shock acceleration of.protons in a plasm. slab produced in a gas jet by the collision of.two laser-driven hydrodynam.c shockwaves

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m.tter and Radiation at Extrem.s 2024年第2期9卷 12-25页

作者： J.-R.m.rquès L.Lancia P.Loiseau P.f.restier-Colleoni m.Tarisien E.Atukpor V.Bagnoud C.Brabetz f.Consoli J.Dom.nge f.Hannachi P.Nicolaï m.Salvadori B.Zielbauer LULI CNRSÉcole PolytechniqueCEASorbonne UniversitéInstitut Polytechnique de Paris91128 Palaiseau CedexFrance CEA DAMDIF91297 Arpajon CedexFrance UniversitéParis-Saclay CEALMCE91680 Bruyères-le-ChatelFrance CENBG CNRS-IN2P3Universitéde Bordeaux33175 Gradignan CedexFrance GSI Helm.oltzzentrum.f.r Schwerionenf.rschung Gm.H Planckstraße 164291 DarmstadtGermany University of.Darm.tadt Schloßgartenstr.764289 DarmstadtGermany ENEA f.sion and Technologies f.r Nuclear Saf.ty Departm.nt C.R.FrascatiVia Enrico Fermi 45FrascatiRomeItaly CELIA Universitéde Bordeaux–CNRS–CEA33405 TalenceFrance UniversitéParis-Saclay CEALIDYL91191 Gif-sur-YvetteFrance

We have recently proposed a new technique of.plasm. tailoring by laser-driven hydrodynam.c shockwaves generated on both sides of.a gas jet[m.rquès et al.,*** 28,023103(2021)].In a continuation of.this num.rical work,we study experim.ntally the inf.uence of.the tailoring on proton acceleration driven by a high-intensity picosecond laser in three cases:without tailoring,by tailoring only the entrance side of.the picosecond laser,and by tailoring both sides of.the gas *** tailoring,the acceleration is transverse to the laser axis,with a low-energy exponential spectrum.produced by Coulom. *** the f.ont side of.the gas jet is tailored,a f.rward acceleration appears,which is signif.cantly enhanced when both the f.ont and back sides of.the plasm. are *** f.rward acceleration produces higher-energy protons,with a peaked spectrum.and is in good agreem.nt with the m.chanism.of.collisionless shock acceleration(CSA).The spatiotem.oral evolution of.the plasm. prof.le is characterized by optical shadowgraphy of.a probe *** ref.action and absorption of.this beam.are sim.lated by post-processing 3D hydrodynam.c sim.lations of.the plasm. *** with the experim.ntal results allows estim.tion of.the thickness and near-critical density of.the plasm. slab produced by tailoring both sides of.the gas *** param.ters are in good agreem.nt with those required f.r CSA.

关键词： acceleration hydrodynam.c collision

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