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Journal of Zh.jiang University-Science A(Applied Ph.sics & Engineering) 2024年第8期25卷 680-686页

作者： Shujie GAO Yongjin hu Zh.ch.ng JIANG Xiaoxiang WANG Dong YE Ch.ngxing hu College of Quality&Safety Engineering China Jiliang UniversityHangzhou 310018China Key Laboratory of Biomass Ch.mical Engineering of Ministry of Education Institute of Industrial Ecology and EnvironmentCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Sch.ol of Mech.tronics and Energy Engineering Ningbo Tech UniversityNingbo 315100China

In th.s study,a series of CuCl_(2)-modified MnO_(x)-CeO_(x)nanorods were synth.sized for th. oxidation of h.^(0).Th. addition of CuCl_(2)resulted in an enh.ncement in th. catalyst’s h.^(0)oxidation ability,and h.^(0)oxidation efficiency reach.d>97%from 150 to 250°*** th. MnO_(x)-CeO_(x)catalysts,Mn^(4+)played th. role of th. active species for h.^(0)oxidization,but in th. CuCl_(2)-doped catalysts Cl−also contributed to h.^(0)oxidation,conferring th. superior performance of th.se *** introduction of SO_(2) led to a decrease in th. availability of Mn^(4+),and th. h.^(0)oxidation efficiency of MnO_(x)-CeO_(x)decreased from about 100%to about 78%.By contrast,CuCl_(2)-promoted samples maintained a h.^(0)oxidation efficiency of about 100%during th. SO_(2) deactivation cycle due to th. h.gh.reactivity of Cl−.

关键词： h.^(0)oxidation CuCl_(2)modification MnO_(x)-CeO_(x)nanorods Sulfur resistance O_(x)idation activity

Coupled conditional nonlinear optimal perturbations and th.ir application to ENSO ensemble forecasts

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Science Ch.na Earth.Sciences 2024年第3期67卷 826-842页

作者： Wansuo DUAN Lei hu Rong FENG LASG Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Ch.nese Academy of Sciences Beijing 100049China

Limitations are existed in current ensemble forecasting initial perturbation meth.ds for describing th. interactions among various sph.res of th. Earth.system. In th.s study, a new meth.d is proposed, namely, th. coupled conditional nonlinear optimal perturbation(C-CNOP) meth.d, wh.ch.incorporates multisph.re interactions much.appropriately. Th. El Nino-South.rn Oscillation(ENSO) is a typical ocean-atmosph.re “coupling”(or “interaction”) ph.nomenon. Th. C-CNOP meth.d is applied to ensemble forecasting of ENSO. It is demonstrated th.t th. C-CNOP meth.d can generate coupled initial perturbations(CPs) th.t appropriately consider initial ocean-atmosph.re coupling uncertainty for ENSO ensemble forecasts. Results reveal th.t th. CPs effectively improve th. ability of ENSO ensemble-mean forecasts in both.temporal variability of Nio3.4 sea surface temperature anomalies(SSTAs) and spatial variability of ENSO mature-ph.se SSTAs. Notably, despite th. weakest ocean-atmosph.re coupling strength.in th. tropical Pacific occurring during th. boreal spring and summer, CPs still capture th. uncertainties of th.s weak coupling wh.n ENSO predictions are initialized at th.se seasons. Th.s performance of CPs significantly suppresses th. rapid increase of ENSO prediction errors due to th. h.gh.ocean-atmosph.re coupling instability during th.se seasons, and thus effectively extends th. lead time of skillful ENSO forecasting. h.nce, th. C-CNOP meth.d is a suitable initial perturbation approach.for ENSO ensemble forecast th.t can describe initial ocean-atmosph.re coupling uncertainty. It is expected th.t th. CCNOP meth.d plays a significant role in predictions of oth.r h.gh.impact climate ph.nomena, and even future Earth.system predictions.

关键词： Ensemble forecast Multisph.re interaction Initial perturbations ENSO

Automated regression test meth.d for scientific computing libraries:Illustration with.SPh.nXsys

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Journal of h.drodynamics 2024年第3期36卷 466-478页

作者： Bo Zh.ng Ch. Zh.ng Xiangyu hu TUM Sch.ol of Engineering and Design Technical University of MunichMunichGermany

Scientific computing libraries,wh.th.r in-h.use or open-source,h.ve witnessed enormous progress in both.engineering and scientific ***,it is important to ensure th.t modifications to th. source code,prompted by bug fixing or new feature development,do not compromise th. accuracy and functionality th.t h.ve been already validated and *** paper introduces a meth.d for establish.ng and implementing an automatic regression test environment,using th. open-source multi-ph.sics library SPh.nXsys as an illustrative ***,a reference database for each.bench.ark test is generated from observed data across multiple *** compreh.nsive database encapsulates th. maximum variation range of metrics for different strategies,including th. time-averaged,ensemble-averaged,and dynamic time warping *** accounts for uncertainties arising from parallel computing,particle relaxation,ph.sical instabilities,and ***,new results obtained after source code modifications undergo testing based on a curve-similarity comparison against th. reference *** th. source code is updated,th. regression test is automatically executed for all test cases,providing a compreh.nsive assessment of th. validity of th. current *** regression test environment h.s been successfully implemented in all dynamic test cases with.n SPh.nXsys,including fluid dynamics,solid mech.nics,fluid-structure interaction,th.rmal and mass diffusion,reaction-diffusion,and th.ir multi-ph.sics couplings,and demonstrates robust capabilities in testing different *** is noted th.t wh.le th. current test environment is built and implemented for a particular scientific computing library,its underlying principles are generic and can be easily adapted for use with.oth.r libraries,ach.eving equal effectiveness.

关键词： Scientific computing open-source library verification and validation regression test automatic test environment curve similarity comparison smooth.d particle h.drodynamics

Advanced Sensors Towards Ubiquitous Power Internet of Th.ngs

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 871-890页

作者： Jinliang h. Zh.fei h.n Jun hu Department of Electrical Engineering Tsinghua UniversityBeijing 100084China IEEE CSEE

Th. ubiquitous power Internet of Th.ngs(UPIoT)uses modern information tech.ology and advanced communication tech.ologies to realize interconnection and human-computer interaction in all aspects of th. power *** h.s th. ch.racteristics of compreh.nsive state perception and efficient information processing,and h.s broad application prospects for transformation of th. energy *** fundamental facility of th. UPIoT is th. sensor-based information *** using advanced sensors,Wireless Sensor Networks(WSNs),and advanced data processing tech.ologies,Internet of Th.ngs can be realized in th. power *** th.s paper,a framework of WSNs based on advanced sensors towards UPIoT is *** addition,th. most advanced sensors for UPIoT purposes are reviewed,along with.an explanation of h.w th. sensor data obtained in UPIoT is utilized in various scenarios.

关键词： Advanced sensors ubiquitous power Internet of Th.ngs wireless sensor networks

Precise construction of RuPt dual single-atomic sites to optimize oxygen electrocatalytic beh.viors for h.gh.performance Zn-air batteries

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Journal of Energy Ch.mistry 2024年第10期97卷 520-528,I0011页

作者： Xiaolin hu Zh.nkun Wu Ch.oh. Xu Sch.ol of Science Chongqing Key Laboratory of New Energy Storage Materials and DevicesChongqing University of TechnologyChongqing 400054China Sch.ol of Ch.mistry and Engineering Chongqing UniversityChongqing 400044China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China

Th. development of redox bifunctional electrocatalysts with.h.gh.performance,low cost,and long lifetimes is essential for ach.eving clean energy *** study proposed an atom capture strategy for anch.ring dual single atoms(DSAs)in a zinc-zeolitic imidazolate framework(Zn-ZIF),followed by calcination under an N_(2) atmosph.re to synth.size ruth.nium-platinum DSAs supported on a nitrogendoped carbon substrate(RuPt DSAs-NC).Th.oretical calculations sh.wed th.t th. degree of Ru 5dxz-~*O 2p_x orbital h.bridization was h.gh.wh.n^(*)O was adsorbed at th. Ru site,indicating enh.nced covalent h.bridization of metal sites and oxygen ligands,wh.ch.benefited th. adsorption of intermediate *** presence of th. RuPtN_6 active center optimized th. absorption-desorption beh.vior of intermediates,improving th. electrocatalytic performance of th. oxygen reduction reaction(ORR)and th. oxygen evolution reaction(DER),RuPt DSAs-NC exh.bited a 0.87 V h.gh.h.lf-wave potential and a 268 mV low overpotential at 10 mA cm^(-2)in an alkaline ***,rech.rgeable zinc-air batteries(ZABs)ach.eved a peak power density of 171 MW cm^(-2).Th. RuPt DSAs-NC demonstrated long-term cycling for up to 500 h.with.superior round-trip *** study provided an effective structural design strategy to construct DSAs active sites for enh.nced electrocata lytic performance.

关键词： Dual single atoms catalysts Atom capture Oxygen reduction reaction Oxygen evolution reaction Rech.rgeable Zn-air batteries

Analysis of Sea Surface Temperature Cooling in Typh.on Events Passing th. Kurosh.o Current

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Journal of Ocean University of Ch.na 2024年第2期23卷 287-303页

作者： hu Yuyi Sh.O Weizeng Sh.N Wei ZUO Junch.ng JIANG Tao hu Song College of Marine Sciences Shanghai Ocean UniversityShanghai 201306China East Ch.na Sea Environment Monitoring Ministry of Natural ResourcesShanghai 201206China Ch.na Waterborne Transport Research.Institute Ministry of TransportBeijing 100088China

Th. aim of th.s study is to investigate th. sea surface temperature(SST) cooling as typh.ons pass th. Kurosh.o Current.A numerical circulation model,denoted as th. Stony Brook Parallel Ocean Model(sbPOM),was used to simulate th. SST,wh.ch.includes four wave-induced effect terms(i.e.,radiation stress,nonbreaking waves,Stokes drift,and breaking waves) simulated using th. th.rd-generation wave model,called WAVEWATCh.Ⅲ(WW3).Th. significant wave h.igh.(SWh. measurements from th. Jason-2 altimeter were used to validate th. WW3-simulated results,yielding a root mean square error(RMSE) of less th.n 0.50 m and a correlation coefficient(COR) of approximately *** water temperature measured from th. Advanced Research.and Global Observation Satellite was applied to validate th. model ***,th. RMSE of th. SST is 0.92℃ with.a COR of approximately *** revealed in th. sbPOM-simulated SST fields,a reduction in th. SST at th. Kurosh.o Current region was observed as a typh.on passed,alth.ugh.th. water temperature of th. Kurosh.o Current is relatively *** variation of th. SST is consistent with.th.t of th. current,wh.reas th. maximum SST lagged beh.nd th. occurrence of th. peak ***,th. Stokes drift plays an important role in th. SST cooling after analyzing four wave-induced terms in th. background of th. Kurosh.o *** sensitivity experiment also sh.wed th.t th. accuracy of th. water temperature was significantly reduced wh.n including breaking waves,wh.ch.play a negative role in th. inside part of th. *** variation in th. mean mixing layer depth.MLD) sh.wed th.t a typh.on could enh.nce th. mean MLD in th. Kurosh.o Current area in September and October,wh.reas a typh.on h.s little influence on th. mean MLD in th. Kurosh.o Current area in ***,th. mean MLD rapidly decreased with.th. weakening of th. strong wind force and wave-induced effects wh.n a typh.on crossed th. Kurosh.o Current.

关键词： typh.on wave sea surface temperature Kurosh.o Current

Dynamic ch.racteristics and application of dual th.oat fluidic th.ust vectoring nozzle

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Ch.nese Journal of Aeronautics 2024年第9期37卷 85-99页

作者： Buxian XU Dongping hu Lih.o FENG Fluid Mech.nics Key Laboratory of Ministry of Education Beihang UniversityBeijing 100191China State Key Laboratory of Clean and Efficient Turbomach.nery Power Equipment Dongfang Electric Corporation Dongfang Turbine Co.LTDDeyang 618000China

Th.ust vectoring tech.ology plays an important role in improving th. maneuverability of *** order to overcome th. disadvantages of mech.nical th.ust vectoring nozzles,such.as complications of structure and significant increases in weigh. and cost,fluidic th.ust vectoring noz-zles are *** Th.oat fluidic th.ust vectoring Nozzle(DTN)h.s received wide attention due to its excellent th.ust vectoring efficiency and minimal th.ust *** th.s study,th.ee-dimensional unsteady numerical simulations of a single axisymmetric DTN are conducted first to analyze its dynamic *** th. pitch.and yaw control ch.racteristics of DTN equipped on a flying-wing aircraft are *** is found th.t th. dynamic response will experience th.ee stages:rapid-deflecting stage,oscillating stage,and steady stage.A complete recirculation zone forms at th. end of th. rapid-deflecting stage,wh.ch.push.s th. primary flow to attach.to th. wall opposite th. secondary ***,th. exh.ust flow is *** terms of DTN's appli-cation,th. DTN equipped on th. flying-wing aircraft is capable of providing effective pitch.and yaw moments at all angles of attack and Mach.*** addition,continuous pitch.and yaw moments can be obtained by adjusting th. secondary mass flow *** control moment is gen-erated due to th. asymmetrical pressure distribution of nozzle surface,wh.ch.is mainly contributed by th. pressure decrease on th. secondary injection ***,th. DTN equipped on th. flying-wing aircraft h.s a relatively h.gh.th.ust vectoring efficiency of around 5°/%and a th.ust coefficient of around 0.95 wh.n nozzle pressure ratio equals *** results provide an important th.oretical basis for th. practical application of DTN.

关键词： Dual th.oat nozzle Dynamic response ch.rac-teristic Flowcontrol Flying-wing aircraft

Defect engineering on constructing surface active sites in catalysts for environment and energy applications

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Frontiers of Ch.mical Science and Engineering 2024年第7期18卷 11-32页

作者： Yawen Cai Baowei hu Xiangke Wang Sch.ol of Life Science Shaoxing UniversityShaoxing 312000China College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206China

Th. precise engineering of surface active sites is deemed as an efficient protocol for regulating surfaces and catalytic properties of *** engineering is th. most feasible option to modulate th. surface active sites of *** specific active sites on th. catalyst allows precise modulation of its electronic structure and ph.sicoch.mical ***,we outlined th. engineering of several types of defects,including vacancy defects,void defects,dopant-related defects,and defect-based single atomic *** overview of progress in fabricating structural defects on catalysts via de novo synth.sis or post-synth.tic modification was ***,th. applications of th. well-designed defective catalysts in energy conversion and environmental remediation were carefully ***,current ch.llenges in th. precise construction of active defect sites on th. catalyst and future perspectives for th. development directions of precisely controlled synth.sis of defective catalysts were also proposed.

关键词： defect engineering vacancy void defects doping single atomic sites

Impact of Polymer Matrix on Polymer Mech.noch.omism from Excited State Intramolecular Proton Transfer

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Ch.nese Journal of Ch.mistry 2024年第6期42卷 611-616页

作者： Yu Wu Xin Ch.ng huan hu Shui hu Zh.min Ma Zh.yong Ma Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing State Key Laboratory of Organic-Inorganic CompositesCollege of Chemical EngineeringBeijing University of Chemical TechnologyBeijing100029 China Center of Advanced Elastomer Materials College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing100029 China College of Engineering Peking UniversityBeijing100871 China

Mech.noch.omic polymers based on non-covalent ch.nges h.ve attracted much.attention ***,we report th. impact of inter/intramolecular h.drogen bonds on polymer mech.noch.omism from th. excited state intramolecular proton transfer (ESIPT) ***-Nh.-Oh.and Ph.z=2A are designed and obtained by simple and h.gh.yield synth.sis,and are connected into polyureth.ne and poly(meth.l acrylate-co-2-eth.lh.xyl acrylate),*** th. initial state,th. Ph.z-Nh.-Oh.PU sample sh.ws blue fluorescence from th. excited enol form (E*) excitons,owing to intermolecular h.drogen bonds th.t interrupt th. ESIPT reactions but th. Ph.z=2A@PMA-2-EA sample expresses cyan fluorescence belonging to th. excited keto form (K*) emission,implying th.t th. intramolecular h.drogen bonds ***,under stretch.ng,external force can tune th. emission of th. Ph.z=2A@PMA-2-EA sample from K* to E* *** external force can putatively still promote a bond rotation,ESIPT reactions remain equivalently interrupted in both.th. relaxed and stressed states in a h.drogen-bond donating *** calculation confirms th. force-induced increase in dih.dral angle for th. transition of ESIPT-on/***,Ph.z-Nh.-Oh.PU and Ph.z=2A@PMA-2-EA sh.wed disparate initial ESIPT states and furth.r different responses/sensitivity to *** study reports a novel and efficient strategy for enrich.ng mech.noch.omic investigation and extending th. applications of ESIPT reactions.

关键词： Polymer mech.noch.omism Excited state intramolecular proton transfer h.drogen bonding Supramolecular ch.mistry Elastomers

Allosteric DNAzyme-based encoder for molecular information transfer

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Ch.nese Ch.mical Letters 2024年第7期35卷 235-241页

作者： Mingh.o hu Tianci Xie Yuqiang hu Longjie Li Ting Wang Tongbo Wu Sch.ol of Ph.rmacy Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Oncology Tongji Hospital of Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China GI Cancer Research.Institute Tongji HospitalHuazhong University of Science and TechnologyWuhan 430030China Sch.ol of Life Science and Tech.ology Wuhan Polytechnic UniversityWuhan 430023China State Key Laboratory of Bioelectronics National Demonstration Center for Experimental Biomedical Engineering EducationSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China

Dynamic DNA nanotech.ology plays a significant role in nanomedicine and information science due to its h.gh.programmability based on Watson-Crick base pairing and nanoscale *** DNA mach.nes and networks h.ve been widely used in various fields,including molecular imaging,biosensors,drug delivery,information processing,and logic *** serve as crucial components for information compilation and transfer,allowing th. conversion of information from diverse application scenarios into a format recognized and applied by DNA ***,th.re are only a few encoder designs with.DNA ***,th. molecular priority encoder is h.rdly *** th.s study,we introduce allosteric DNAzyme-based encoders for information *** design of th. allosteric domain and th. recognition arm allows th. input and output to be independent of each.oth.r and freely *** pre-packaged mode design ach.eves uniformity of baseline dynamics and dynamics *** also integrated non-nucleic acid molecules into th. encoder th.ough.th. aptamer design of th. allosteric ***,we developed th. 2^(n)-n encoder and th. EndoⅣ-assisted priority encoder inspired by immunoglobulin's molecular structure and effector *** our knowledge,th. proposed encoder is th. first enzyme-free DNA encoder with.DNA output,and th. priority encoder is th. first molecular priority encoder in th. DNA reaction *** encoders avoid complex operations on a single molecule,and th.ir simple structure facilitates th.ir application in complex DNA circuits and biological scenarios.

关键词： DNAzyme Encoder Nucleic acids DNA circuit DNA strand displacement Dynamic DNA nanotech.ology