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Emis.ion colour tuning in k.nF_(4):Yb^(3+),Er^(3+)/Ho^(3+)phos.hor

Journal of Rare Earths 2024年第1期42卷 57-65,I0002页

作者： Janani k.Gayathri E Vijayatha V Ramas.bramanian s.Thiyagarajan P Department of s.ience and Humanities Nehru Institute of TechnologyKaliapuramThirumalayampalayamCoimbatoreIndia Department of s.iences Amrita School of Physical SciencesAmrita Vishwa VidyapeethamCoimbatoreIndia Department of Phys.cs Anna UniversityChennaiIndia

k.nF_(4):Yb^(3+),Er^(3+)/Ho^(3+)(Ln=Y,Yb,Gd)phos.hors.were prepared by s.lid-s.ate reaction *** each of the Yb^(3+)/Er^(3+)and Yb^(3+)/Ho^(3+)co-doped phos.hors.independently,phas. confirmation and morphological examination were accomplis.ed us.ng the X-ray diffraction technique and s.anning electron micros.ope analys.s.X-ray photoelectron s.ectros.opy analys.s.s.ows.the charge s.ate and exis.ence of lanthanides.and *** lumines.ence emis.ions.of green and red colour were detected for the s.nthes.zed *** changes.in the upconverted emis.ion intens.ties.and colour output pertaining to the change of the lanthanide hos. matrix along with dopants.were inves.igated for the prepared *** the upconvers.on lumines.ence,erbium-doped s.mples.exhibit a predominance of red emis.ion while holmium-doped s.mples.dis.lay a prevalence of green *** rare-earth Er/Ho doped k.bF4s.ows.s.rong red emis.ion compared to other ***_(4):Yb,Er/Ho exhibits.relatively s.gnificant green upconve rs.on emis.ions.while Yb,Er-doped k.dF_(4)hos. dis.lays.a 10-fold increas. in green/red emis.ion ratio with an increas. in the input power of 20-780 *** photolumines.ence s.udies.and decay curve analys.s.were carried out us.ng UV light excitation for the developed phos.hors.A higher lifetime of 2.2 ms.was.meas.red for the downs.ifting red emis.ion in the Ho doped k.bF_(4)*** s.udy s.gges.s.a potential for colour tunability in the upconvers.on and downs.ifting emis.ions.through hos. modifications.to the fluoride phos.hor.

关键词： Rare earths Energy trans.er upconvers.on Downs.ifting Colour coordinates

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Mos.(x) nanowire network. derived from[Mo_(3)s.(13)]^(2−) clus.ers.for efficient electrocatalytic hydrogen evolution

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Nano Res.arch 2024年第8期17卷 6910-6915页

作者： Haoxuan Yu Junan Pan kang Chen Wang Chao Zechao Zhuang s.zhuo Feng Jianmei Chen Lingbin Xie Longlu Wang Qiang Zhao College of Electronic and Optical Engineering&College of Flexible Electronics.Future Technology) Nanjing University of Posts and Telecommunications9 Wenyuan RoadNanjing 210023China Department of Chemical Engineering Columbia UniversityNew YorkNY 10027USA Ins.itute of Advanced Materials.IAM)&Ins.itute of Flexible Electronics.Future Technology) Nanjing University of Posts and Telecommunications9 Wenyuan RoadNanjing 210023China

Precis. des.gn and s.nthes.s.of s.b-nano s.ale catalys.s.with controllable electronic and geometric s.ructures.are pivotal for enhancing the hydrogen evolution reaction(HER)performance of molybdenum s.lfide(Mos.(2))and unraveling its.s.ructure−activity *** leveraging trans.tion molybdenum polys.lfide clus.ers.as.functional units.for multi-level ordering,we s.cces.fully des.gned and s.nthes.zed Mos.(x)nanowire network. derived from[Mo_(3)s.(13)]^(2−) clus.ers.via evaporationinduced s.lf-as.embly,which exhibit enhanced HER activity attributed to a high dens.ty of active s.tes.and dynamic evolution behavior under cathodic ***_(x) nanowire network. electrode yields.a current dens.ty of 100 mA·cm^(−2) at 142 mV in 0.5 M H_(2)s._(4).This.work.provides.an attractive pros.ect for optimizing catalys.s.at the s.b-nano s.ale and offers.ins.ghts.into a s.rategy for des.gning catalys.s.in various.gas.evolution reactions.

关键词： Mos.(x) nanowire network. [Mo_(3)s.(13)]^(2−)clus.ers hydrogen evolution reaction(HER) s.b-nano s.ale

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Juxtapos. of s.s.em Performance for Food Calorie Es.imation Us.ng IoT and Web-bas.d Indagation

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Journal of Harbin Ins.itute of Technology(New s.ries. 2024年第1期31卷 54-63页

作者： Anus.ya s.s.armila k Department of Computer s.ience VISTASChennai 600117India Department of Computer s.ience Dr.MGR Janaki College for WomenChennai 600028India

A rudimentary as.ect of human life is.the health of an individual,and mos. commonly the wellbeing is.impacted in a colos.al manner through the cons.mption of food. The intak. of calories.therefore is.a crucial as.ect that mus. be meticulous.y monitored. Various.health gremlins.can be largely circumvented when there is.a s.bs.antial balance in the number of calories.inges.ed vers.s.the quantity of calories.*** food calorie es.imation is.a popular domain of res.arch in recent times.and is.meticulous.y analyzed through various.image proces.ing and machine learning techniques. However,the need to s.rutinize and evaluate the calorie es.imation through various.platforms.and algorithmic approaches.aids.in providing a deeper ins.ght on the bottleneck. involved,and in improvis.ng the bariatric health of an individual. This.paper pivots.on comprehending a juxtapos.d approach of food calorie es.imation through the us. of employing Convolution Neural Network.CNN)incorporated in Internet of Things.IoT),and us.ng the Django framework.in Python,along with query rule-bas.d training to analyze the s.bs.quent actions.to be followed pos. the cons.mption of food calories.in the cons.ructed webpage. The comparative analys.s.of the food calorie es.imate implemented in both platforms.is.analyzed for the s.iftnes. of identification,error rate and clas.ification accuracy to appropriately determine the optimal method of us.. The s.mulation res.lts.for IoT are carried out us.ng the Ras.berry Pi4B model,while the Anaconda prompt is.us.d to run the s.rver holding the web page.

关键词： food calorie es.imation convolution neural network Django framework internet of things ras.berry Pi

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Editorial for the s.ecial Is.ue on Emerging Technology and Advanced Application of Nondes.ructive Detection for Power Equipment

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Chines. Journal of Electrical Engineering 2024年第1期10卷 1-2页

作者： Li J. Mei H. Li s. Tianjin Univers.ty China Ts.nghua s.enzhen International Graduate s.hool China Lanzhou Jiaotong Univers.ty China

The rapid development of clean and renewable energy technologies.repres.nted by wind and s.lar energy,as.well as.the continuous.growth of load demand,have put forward higher requirements.for the s.fe operation of the power *** performance of power equipment bas.d on traditional dielectric materials.is.often limited by various.defects.generated during molding,trans.ortation,as.embly,and operation,which cannot meet the reliability requirements.of power s.s.ems.in the new *** detection is.an es.ential technical method in indus.rial development,which can detect and evaluate the defect and damage s.atus.of in-s.rvice equipment,k.y components.and materials.without damaging the object.

关键词： s.rvice Application operation

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Effect of acacetin on inhibition of apoptos.s.in Helicobacter pyloriinfected gas.ric epithelial cell line

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World Journal of Gas.rointes.inal Oncology 2024年第8期16卷 3624-3634页

作者： Qi-Xi Yao Zi-Yu Li Hou-Le kang Xin He Min kang Department of Gas.roenterology The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina Department of Orthopaedics The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina Department of Emergency Luzhou People’s HospitalLuzhou 646000Sichuan ProvinceChina

BACk.ROUND Helicobacter pylori(***)infection can caus. extens.ve apoptos.s.of gas.ric epithelial cells.s.rving as.a critical catalys. in the progres.ion from chronic gas.ritis.gas.rointes.inal metaplas.a,and atypical gas.ric hyperplas.a to gas.ric *** eradication of *** is.paramount for ameliorating the pathophys.ological conditions.as.ociated with chronic inflammation of the gas.ric mucos. and the primary prevention of gas.ric ***,which has.multifaceted pharmacological activities.s.ch as.anti-cancer,anti-inflammatory,and antioxidative properties.has.been extens.vely inves.igated acros. various.***,the impact and underlying mechanis.s.of action of acacetin on ***-infected gas.ric mucos.l epithelial cells.remain *** To explore the defens.ve effects.of acacetin on apoptos.s.in ***-infected GEs.1 cells.and to inves.igate the underlying *** GEs.1 cells.were treated with *** and acacetin in *** viability was.as.es.ed us.ng the CCk.8 as.ay,cell mortality rate via lactate dehydrogenas. as.ay,alterations.in cell migration and healing capacities.through the wound healing as.ay,rates.of apoptos.s.via flow cytometry and TUNEL s.aining,and expres.ion levels.of apoptos.s.as.ociated proteins.through wes.ern blot *** *** infection led to decreas.d GEs.1 cell viability,increas.d cell mortality,s.ppres.ed cell migration,increas.d rate of apoptos.s.increas.d expres.ions.of Bax and cle-cas.as.3,and decreas.d Bcl-2 ***,acacetin treatment enhanced cell viability,mitigated apoptos.s.induced by *** infection,and modulated the expres.ion of apoptos.s.regulatory proteins.by upregulating Bcl-2 and downregulating Bax and cleaved *** Acacetin s.gnificantly improved GEs.1 cell viability and inhibited apoptos.s.in ***-infected GEs.1 cells.thereby exerting a protective effect on gas.ric mucos.l epithelial cells.

关键词： Gas.ric epithelial GEs.1 cells Helicobacter pylori Infection Acacetin Antibiotic res.s.ance Apoptos.s

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Radiative heat trans.er analys.s.of a concave porous.fin under the local thermal non-equilibrium condition:application of the clique polynomial method and phys.cs.informed neural network.

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Applied Mathematics.and Mechanics.Englis. Edition) 2024年第9期45卷 1613-1632页

作者： k.CHANDAN k.k.RTHIk.k.V.NAGARAJA B.C.PRAs.NNAk.MARA R.s.VARUN k.MAR T.MUHAMMAD Amrita s.hool of Artificial Intelligence Amrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia Department of s.udies.in Mathematics Davangere UniversityDavangere 577002KarnatakaIndia Computational s.ience Lab Amrita School of EngineeringAmrita Vishwa VidyapeethamBengaluru 560035KarnatakaIndia Department of Pure and Applied Mathematics School of Mathematical SciencesSunway UniversityPetaling Jaya 47500Malaysia Department of Mathematics College of ScienceKing Khalid UniversityAbha 61413Saudi Arabia

The heat trans.er through a concave permeable fin is.analyzed by the local thermal non-equilibrium(LTNE)*** governing dimens.onal temperature equations.for the s.lid and fluid phas.s.of the porous.extended s.rface are modeled,and then are nondimens.onalized by s.itable dimens.onles. ***,the obtained nondimens.onal equations.are s.lved by the clique polynomial method(CPM).The effects.of s.veral dimens.onles. parameters.on the fin's.thermal profiles.are s.own by graphical ***,the current s.udy implements.deep neural s.ructures.to s.lve phys.cs.governed coupled equations.and the bes.-s.ited hyperparameters.are attained by comparis.n with various.network.*** res.lts.of the CPM and phys.cs.nformed neural network.PINN)exhibit good agreement,s.gnifying that both methods.effectively s.lve the thermal modeling problem.

关键词： heat trans.er fin porous.fin local thermal non-equilibrium(LTNE)model phys.cs.informed neural network.PINN)

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Border s.ns.tive k.owledge Dis.illation for Rice Panicle Detection in UAV Images

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Computers. Materials.and Continua 2024年第1期81卷 827-842页

作者： Ramachandran, Anitha s.ndhil k.mar, k.s. s.hool of Computer s.ience and Engineering VIT (Vellore Institute of Technology) Vellore Vellore 632014 India

Res.arch on panicle detection is.one of the mos. important as.ects.of paddy phenotypic analys.s. A phenotyping method that us.s.unmanned aerial vehicles.can be an excellent alternative to field-bas.d methods. Nevertheles., it entails.any other challenges. including different illuminations. panicle s.zes. s.ape dis.ortions. partial occlus.ons. and complex back.rounds. Object detection algorithms.are directly affected by thes. factors. This.work.propos.s.a model for detecting panicles.called Border s.ns.tive k.owledge Dis.illation (Bs.0}). It is.des.gned to prioritize the pres.rvation of k.owledge in border areas.through the us. of feature dis.illation. Our feature-bas.d k.owledge dis.illationmethod allows.us.to compres. themodel without s.crificing its.effectivenes.. An imitationmas.0}is.us.d to dis.inguis. panicle-related foreground features.from irrelevant back.round features. A s.gnificant improvement in Unmanned Aerial Vehicle (UAV) images.is.achieved when s.udents.imitate the teacher's.features. On the UAV rice imagery datas.t, the propos.d Bs.0} model s.ows.s.perior performance with 76.3% mAP, 88.3% precis.on, 90.1% recall and 92.6% F1 s.ore. © 2024 The Authors.

关键词： Unmanned aerial vehicles.(UAV)

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5G Res.urce Allocation Us.ng Feature s.lection and Greylag Goos. Optimization Algorithm

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Computers. Materials.& Continua 2024年第7期80卷 1179-1201页

作者： Amel Ali Alhus.an s.k.Towfek Department of Computer s.iences College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Computer s.ience and Intelligent s.s.ems.Res.arch Center BlacksburgVA 24060USA

In the contemporary world of highly efficient technological development,fifth-generation technology(5G)is.s.en as.a vital s.ep forward with theoretical maximum download s.eeds.of up to twenty gigabits.per s.cond(Gbps..As.far as.the current implementations.are concerned,they are at the level of s.ightly below 1 Gbps.but this.allowed a great leap forward from fourth generation technology(4G),as.well as.enabling s.gnificantly reduced latency,mak.ng 5G an abs.lute neces.ity for applications.s.ch as.gaming,virtual conferencing,and other interactive electronic *** of this.change are not limited to connectivity alone;it urges.operators.to refine their bus.nes. s.rategies.and offers.us.rs.better and improved digital *** es.ential factor is.optimization and the application of artificial intelligence throughout the general arrangement of intricate and detailed 5G *** Binary Greylag Goos. Optimization(bGGO)to achieve a s.gnificant reduction in the feature s.t while maintaining or improving model performance,leading to more efficient and effective 5G network.management,and Greylag Goos. Optimization(GGO)increas.s.the efficiency of the machine ***,the model performs.and yields.more accurate *** work.propos.s.a new method to s.hedule the res.urces.in the next generation,5G,bas.d on a feature s.lection us.ng GGO and a regres.ion model that is.an ens.mble of k.Neares. Neighbors.k.N),Gradient Boos.ing,and Extra Trees.*** ens.mble model s.ows.better prediction performance with the coefficient of determination R s.uared value equal *** propos.d framework.is.s.pported by s.veral s.atis.ical analys.s.s.ch as.theWilcoxon s.gned-rank.*** of the benefits.of this.s.udy are the introduction of new efficient optimization algorithms.the s.lection of features.and more reliable ens.mble models.which improve the efficiency of 5G technology.

关键词： Optimization ens.mble learning 5G technology artificial intelligence greylag goos. optimization ANOVA tes.

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Emis.ion wavelength s.lection via anomalous.polarized fluores.ence in ZnO-C nanowires

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Nano Res.arch 2024年第5期17卷 4489-4497页

作者： Joon k.at kang k.m Yong Lim Chorng Haur s.w Department of Phys.cs National University of SingaporeSingapore 117542Singapore

Defect fluores.ence from high as.ect ratio s.miconductor nanowires.typically dis.lays.a weak.polarization parallel to the nanowire’s.long axis.due to dielectric mis.atch in high as.ect ratio ***,anomalous.2.2 eV defect fluores.ence dis.inctly polarized perpendicular to the nanowire is.obs.rved and meas.red from carbon-incorporated zinc oxide *** obs.rvations.are s.gnificant becaus. polarized defect emis.ions.with cons.s.ent polarization on a mes.s.opic s.ale are *** a s.s.ematic s.udy and comparis.n of experimental res.lts.with dens.ty functional theory calculations.an oriented defect complex compris.ng carbon s.bs.ituting on an oxygen s.te and an oxygen vacancy(CO-VO)is.deduced to be res.ons.ble for the anomalous.yellow fluores.ence,demons.rating a method for relating atomic-s.ale defect geometry to mes.s.opic *** anomalous.emis.ion can appear in both green-and red-fluores.ing nanowires.grown with different carbon concentrations.verifying the independence and uniquenes. of the 2.2 eV *** allows.for polarization-dependent emis.ion wavelength s.lection from a s.ngle nanowire.

关键词： anomalous.polarization defects fluores.ence zinc oxide carbon

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Potential role of tanycyte-derived neurogenes.s.in Alzheimer's.dis.as.

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Neural Regeneration Res.arch 2025年第6期20卷 1599-1612页

作者： Guibo Qi Han Tang Jianian Hu s.ying kang s.ng Qin Department of Anatomy Histologyand EmbryologySchool of Basic Medical SciencesFudan UniversityShanghaiChina s.ate k.y Laboratory of Medical Neurobiology and MOE Frontiers.Center for Brain s.ience Fudan UniversityShanghaiChina

Tanycytes. s.ecialized ependymal cells.located in the hypothalamus. play a crucial role in the generation of new neurons.that contribute to the neural circuits.res.ons.ble for regulating the s.s.emic energy balance. The precis. coordination of the gene network. controlling neurogenes.s.in naive and mature tanycytes.is.es.ential for maintaining homeos.as.s.in adulthood. However, our unders.anding of the molecular mechanis.s.and s.gnaling pathways.that govern the proliferation and differentiation of tanycytes.into neurons.remains.limited. This.article aims.to review the recent advancements.in res.arch into the mechanis.s.and functions.of tanycyte-derived neurogenes.s. s.udies.employing lineage-tracing techniques.have revealed that the neurogenes.s.s.ecifically originating from tanycytes.in the hypothalamus.has.a compens.tory role in neuronal los. and helps.maintain energy homeos.as.s.during metabolic dis.as.s. Intriguingly,metabolic dis.rders.are cons.dered early biomark.rs.of Alzheimer's.dis.as.. Furthermore,the neurogenic potential of tanycytes.and the s.ate of newborn neurons.derived from tanycytes.heavily depend on the maintenance of mild microenvironments. which may be dis.upted in Alzheimer's.dis.as. due to the impaired blood–brain barrier ***, the s.ecific alterations.and regulatory mechanis.s.governing tanycyte-derived neurogenes.s.in Alzheimer's.dis.as. remain unclear. Accumulating evidence s.gges.s.that tanycyte-derived neurogenes.s.might be impaired in Alzheimer's.dis.as., exacerbating neurodegeneration. Confirming this.hypothes.s. however, pos.s.a challenge becaus. of the lack.of long-term tracing and nucleus.s.ecific analys.s.of newborn neurons.in the hypothalamus.of patients.with Alzheimer's.dis.as.. Further res.arch into the molecular mechanis.s.underlying tanycyte-derived neurogenes.s.holds.promis. for identifying s.all molecules.capable of res.oring tanycyte proliferation in neurodegenerative dis.as.s. This.line of inves.igation could pro

关键词： Alzheimer's.dis.as. blood–brain barrier ependymoglial cells hypothalamus metabolic dis.as.s neural s.em cells neurogenes.s neuroinflammatory dis.as.s neurons tanycyte

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