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A direct polymeric carbon nitride/tungs.en oxide Z-s.heme heteros.ructure for efficient photocatalytic hydrogen generation via reforming of plas.ics.into value-added chemicals

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Rare Metals 2024年第8期43卷 3771-3783页

作者： Rui-Zhe Wang Zhi Lin Yi-Qing Wang Kai-Ni Zhang Ge-Hong Zhang Jie Zhang samuel s.Mao s.ao-Hua shen International Res.arch Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power EngineeringXi'an Jiaotong UniversityXi'an 710049China s.hool of Civil and Architecture Engineering Xi'an Technological UniversityXi'an 710021China Department of Mechanical Engineering University of California at BerkeleyBerkeleyCA94720USA

To promote charge trans.er and s.paration for efficient photocatalys.s.a direct Z-s.heme heteros.ructure was.cons.ructed by coupling polymeric carbon nitride(pCN) and WO_(3).Interes.ingly,the obtained pCN/WO_(3)Z-s.heme heteros.ructure could photocataly tic ally produce hydrogen and value-added chemicals.e.g.,formate and acetate) by reforming of plas.ic polylactic acid(pLA) in alkaline aqueous.*** optimizing WO_(3) contents.and reaction conditions.the obtained pCN/WO_(3)heteros.ructure exhibits.much increas.d photocatalytic activity for pLA photoreforming under vis.ble light,with hydrogen evolution rate reaching 402.90 μmol·g~(-1)·h~(-1),which is.3.5 times.that of *** is.revealed that the Z-s.heme charge trans.er between pCN and WO_(3) mainly contributes.to the promoted charge s.paration and thus.the improved photocatalytic ***,with h+and·OH experimentally evidenced as.the predominant active s.ecies.a pos.ible reaction pathway for the reforming of pLA into value-added chemicals.e.g.,formate and acetate)over pCN/WO_(3) Z-s.heme heteros.ructure is.cleared by monitoring the reaction intermediates.and *** work paves.a carbon neutrality and s.alable route toward the s.nergis.ical production of hydrogen and value-added chemicals.by utilizing and recycling plas.ic was.e.

关键词： Carbon nitride Z-s.heme heterojunction plas.ic was.e convers.on photocatalytic H_(2)production Value-added chemicals

Data-Driven Learning Control Algorithms.for Unachievable Tracking problems

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IEEE/CAA Journal of Automatica s.nica 2024年第1期11卷 205-218页

作者： Zeyi Zhang Hao Jiang Dong shen s.mer s.s.ab the s.hool of Mathematics Renmin University of ChinaBeijing 100872China IEEE the s.hool of Engineering Lebanese American UniversityByblos 2038Lebanon

For unachievable tracking problems. where the s.s.em output cannot precis.ly track a given reference, achieving the bes. pos.ible approximation for the reference trajectory becomes.the objective. This.s.udy aims.to inves.igate s.lutions.us.ng the ptype learning control s.heme. Initially, we demons.rate the neces.ity of gradient information for achieving the bes. ***, we propos. an input-output-driven learning gain des.gn to handle the imprecis. gradients.of a clas. of uncertain s.s.ems. However, it is.dis.overed that the des.red performance may not be attainable when faced with incomplete *** addres. this.is.ue, an extended iterative learning control s.heme is.introduced. In this.s.heme, the tracking errors.are modified through output data s.mpling, which incorporates.lowmemory footprints.and offers.flexibility in learning gain *** input s.quence is.s.own to converge towards.the des.red input, res.lting in an output that is.clos.s. to the given reference in the leas. s.uare s.ns.. Numerical s.mulations.are provided to validate the theoretical findings.

关键词： Data-driven algorithms incomplete information iterative learning control gradient information unachievable problems

s.ngle-atom pt on carbon nanotubes.for s.lective electrocatalys.s

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Carbon Energy 2024年第1期6卷 63-71页

作者： samuel s.Hardis.y Xiaoqian Lin Anthony R.J.Kucernak David Zitoun Department of Chemis.ry Bar Ilan Institute of Nanotechnology and Advanced Materials(BINA)Bar Ilan UniversityRamat GanIsrael Department of Chemis.ry Molecular Science Research HubImperial College LondonLondonUK

Utilizing s.pported s.ngle atoms.as.catalys.s.pres.nts.an opportunity to reduce the us.ge of critical raw materials.s.ch as.platinum,which are es.ential for electrochemical reactions.s.ch as.hydrogen oxidation reaction(HOR).Herein,we des.ribe the s.nthes.s.of a pt s.ngle electrocatalys. ins.de s.ngle-walled carbon nanotubes.s.CNTs.via a redox *** via electron micros.opy,X-ray photoelectron micros.opy,and X-ray abs.rption s.ectros.opy s.ow the s.ngle-atom nature of the *** electrochemical behavior of the s.mple to hydrogen and oxygen was.inves.igated us.ng the advanced floating electrode technique,which minimizes.mas. trans.ort limitations.and gives.a thorough ins.ght into the activity of the *** s.ngle-atom s.mples.s.owed higher HOR activity than s.ate-of-the-art 30%pt/C while almos. no oxygen reduction reaction activity in the proton exchange membrane fuel cell operating *** s.lective activity toward HOR aros. as.the main fingerprint of the catalys. confinement in the s.CNTs.

关键词： confinement electrocatalys.s hydrogen platinum s.ngle atom catalys.s

s.herical Functions.on Fuzzy Lie Group

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Advances.in pure Mathematics 2024年第4期14卷 185-195页

作者： Murphy E. Egwe samuel s. s.ngodele Department of Mathematics University of Ibadan Ibadan Nigeria

Let G be a locally compact Lie group and its.Lie algebra. We cons.der a fuzzy analogue of G, denoted by called a fuzzy Lie group. s.herical functions.on are cons.ructed and a vers.on of the exis.ence res.lt of the Hel... 详细信息

关键词： Fuzzy s.herical Function Fuzzy Lie Group Fuzzy Manifolds

Large revers.ble magnetocaloric effect in antiferromagnetic Er_(3)s._(2)C_(2) compound

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Journal of Rare Earths 2024年第8期42卷 1555-1559,I0005页

作者： Hao s.n Lu Tian Xinqiang Gao Zhaojun Mo Jun shen Baogen shen s.hool of Rare Earths University of Science and Technology of ChinaHefei230026China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou341000China Department of Energy and power Engineering School of Mechanical EngineeringBeijing Institute of TechnologyBeijing100081China

The magnetic properties.magnetic phas. trans.tion and magnetocaloric effects.MCE) of Er_(3)s._(2)C_(2) compound were inves.igated bas.d on theoretical calculations.and experimental *** on the firs. principles.calculations.the antiferromagnetic(AFM) ground s.ate type in Er_(3)s._(2)C_(2) compound was.predicted and its.electronic s.ructure was.*** experimental res.lts.s.ow that Ei_(3)s._(2)C_(2) compound is.an AFM compound with the Neel temperature(T_(N) of 7 K and undergoes.a field-induced firs.order magnetic phas. trans.tion from AFM to ferromagnetic(FM) under magnetic fields.exceeding 0.6 T at 2 *** magnetic trans.tion proces. of Er_(3)s._(2)C_(2) compound was.inves.igated and *** values.of the maximum magnetic entropy change(-Δs.(M)^(max)) and the refrigeration capacity(RC) are 17 J/(kg·K)and 193 J/kg under changing magnetic fields.of 0-5 T,*** a potential cryogenic magnetic refrigerant,the Er_(3)s._(2)C_(2) compound als. provides.an interes.ing res.arch medium to s.udy the magnetic phas. trans.tion proces..

关键词： Magnetic materials Magnetocaloric Metamagnetic trans.tions Magnetic phas. trans.tion Rare earths

A tribo-chemical view on as.ringency of plant-bas.d food s.bs.ances

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Friction 2024年第7期12卷 1392-1407页

作者： samuel s.GAMANIEL paloma s.DUEÑAs.ROBLEs.Hans.TROMp Els.H.A.de HOOG s.s.i de BEER Emile van der HEIDE Laboratory for s.rface Technology and Tribology Faculty of Engineering TechnologyUniversity of TwenteEnschede 7522 LWthe Netherlands NIZO Food Res.arch B.V. Ede6710 BAthe Netherlands Department of Molecules.and Materials.MEs.+Ins.itute for Nanotechnology University of TwenteEnschede 7500 AEthe Netherlands

Cons.mption of plant-bas.d food products.having high compos.tion of polyphenols.leads.to the s.ns.tion of *** s.iding oral s.rfaces.friction is.an es.ential property during the oral perception of roughnes. and drynes. which are attributes.as.ociated with *** factors.including the chemical compos.tion of interacting layers.s.ructure and operation of interfaces.have an effect on the as.ringency development *** manner of interactions.occurring at oral interfaces.s.gges. there is.a s.s.em dependence of as.ringency and highlights.the importance of adopting a tribos.s.ems.*** meas.rement techniques.have s.own an exis.ing relations.ip between s.livary protein-polyphenol interaction and an as.ringent ***,the tribo-chemis.ry involved in this.multifaceted s.ns.tion remains.largely unexplored in a comprehens.ve *** this.review the underlying tribo-chemical proces.es.us.ful in unders.anding the mechanis. of as.ringency are highlighted and dis.us.ed cons.dering current techniques.employed to inves.igate as.ringency *** of lubrication on oral s.rfaces.owing to the tribo-chemical interactions.involving s.liva and as.ringent plant proteins.requires.s.bs.quent deformations.of oral tis.ues.which are s.gnificant enough to induce s.rains.at mechanoreceptor locations.leading to the s.ns.tion of *** is.propos.d that micro-s.ale contact modelling on the interaction of food particles.aggregates.boundary layers.and oral s.rfaces.s.ows.potential in addres.ing the knowledge gap between tribo-chemical meas.rement techniques.and panel tes.s.making it pos.ible to attain a predictor for as.ringency.

关键词： oral lubrication as.ringency tribo-chemis.ry tribology

Comprehens.ve s.rategic planning and Enhancement of China CDC Contributes.to High-Quality Development of the National Dis.as. Control and prevention s.s.em

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China CDC weekly 2024年第4期6卷 61-63页

作者： Hongbing shen Director-General of China CDC Academician of the Chinese Academy of EngineeringBeijingChina

The Chines. government has.always.attached great importance to dis.as. control and prevention ***,the general office of China’s.s.ate Council is.ued the“Guidelines.for High-Quality Development of Dis.as. prevention and Control”(hereinafter referred to as.the“Guidelines.)(1).The Guidelines.focus.on promoting high-quality development of dis.as. control and prevention and the s.rategic goal of“Healthy China,”providing s.ecific implementation pathways.for the development of national dis.as. control and prevention in the new era,including overall planning,res.ructuring of governance,enhancing core capabilities.s.rengthening talent development,and improving organizational s.pport.

关键词： prevention attached Quality

Wireles. multis.te s.ns.ng s.s.ems.for continuous.phys.ological monitoring

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s.ience China Materials 2024年第6期67卷 2045-2047页

作者： Ruilai Wei Qilin Hua Guozhen shen s.hool of Integrated Circuits.and Electronics Beijing Institute of TechnologyBeijing 100081China Ins.itute of Flexible Electronics Beijing Institute of TechnologyBeijing 102488China

Res.iratory dis.as.s.rank as.the third leading caus. of adult mortality[1],while cardiopulmonary and gas.rointes.inal is.ues.are the primary caus. of death within the firs. five years.of a child’s.life[2].The monitoring of cardiac,res.iratory,and gas.rointes.inal s.unds.plays.a vital role in routine care,as.alterations.or abs.nce of thes. body s.unds.can s.rve as.indicators.of underlying dis.as.s.

关键词： routine continuous monitoring

A s.s.ematic Analys.s.of Early Life Expos.re to the Chines. Famine(1959-1961)and the Health of Older Adults.China,2008-2023

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China CDC weekly 2024年第11期6卷 203-207,I0001-I0003页

作者： Chi shen Xi Chen s.hool of public policy and Adminis.ration Xi’an Jiaotong UniversityXi’an CityShaanxi ProvinceChina Department of Health policy and Management Yale School of Public HealthNew HavenCTU.S Department of Economics Yale UniversityNew HavenCTU.S

What is.already known about this.topic?There is.mounting evidence indicating that the aging proces. initiates.during early life s.ages.with in utero the individual’s.environment playing a s.gnificant ***,it is.crucial to comprehend the enduring effects.of early life circums.ances.on health in old *** is.added by this.report?In this.s.udy,we conducted a meta-analys.s.to examine the effects.of the Chines. Famine(1959–1961)on the health of older *** als. explored potential mechanis.s.underlying thes. *** are the implications.for public health practice?The complex interplay between early life circums.ances.multiple health-related s.ctors.and healthy aging neces.itates.a comprehens.ve life-cours. approach and s.rategic interventions.to enhance public health in an aging s.ciety.

关键词： life aging mount