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Aerosol Microph.sical and Radiative Effects on Continental Cloud Ensembles

Advances in Atmosph.ric Sciences 2018年第2期35卷 234-247页

作者： Yuan WANG jonathan M. VOGEL Yun LIN Bowen PAN Jiaxi h. Yangang LIU Xiquan DONG jonathan h. jiang Yuk L. YUNG Renyi Zh.NG Division of Geological and Planetary Sciences California Institute of Technology Pasadena CA 91106 USA Department of Atmosph.ric Sciences Texas A&M University College Station TX 77840 USA Environmental & Climate Sciences Department Brookhaven National Laboratory Upton NY 11973 USA Department of h.drology and Atmosph.ric Sciences University of Arizona Tucson AZ 85721 USA Jet Propulsion Laboratory California Institute of Technology Pasadena CA 91109 USA Department of Atmo wheric and Oceanic Sciences McGill University Montreal Quebec QC H3A OG4 Canada

Aerosol-cloud-radiation interactions represent one of th. largest uncertainties in th. current climate assessment. Much.of th. complexity arises from th. non-monotonic responses of clouds, precipitation and radiative fluxes to aerosol perturbations under various meteorological conditions. In th.s study, an aerosol-aware WRF model is used to investigate th. microph.sical and radiative effects of aerosols in th.ee weath.r systems during th. March.2000 Cloud Intensive Observational Period campaign at th. US South.rn Great Plains. Th.ee simulated cloud ensembles include a low-pressure deep convective cloud system, a collection of less-precipitating stratus and sh.llow cumulus, and a cold frontal passage. Th. WRF simulations are evaluated by several ground-based measurements. Th. microph.sical properties of cloud h.drometeors, such.as th.ir mass and number concentrations, generally sh.w monotonic trends as a function of cloud condensation nuclei concentrations. Aerosol radiative effects do not influence th. trends of cloud microph.sics, except for th. stratus and sh.llow cumulus cases wh.re aerosol semi-direct effects are identified. Th. precipitation ch.nges by aerosols vary with.th. cloud types and th.ir evolving stages, with.a prominent aerosol invigoration effect and associated enh.nced precipitation from th. convective sources. Th. simulated aerosol direct effect suppresses precipitation in all th.ee cases but does not overturn th. aerosol indirect effect. Cloud fraction exh.bits much.smaller sensitivity （typically less th.n 2%） to aerosol perturbations, and th. responses vary with.aerosol concentrations and cloud regimes. Th. surface sh.rtwave radiation sh.ws a monotonic decrease by increasing aerosols, wh.le th. magnitude of th. decrease depends on th. cloud type.

关键词： aerosol-cloud-radiation interactions cloud-resolving model cloud microph.sics and macroph.sics precipita-tion

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Correlation of work function and stacking fault energy th.ough.Kelvin probe force microscopy and nanoh.rdness in diluteα-magnesium

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Journal of Magnesium and Alloys 2024年第1期12卷 237-250页

作者： Yigit Türe Ali Arslan Kaya h.seyin Aydin jiang Peng Servet Turan Eskiseh.r Tech.ical University Porsuk Vocational SchoolElectronics and Automation DepartmentProgram of MechatronicsEskisehirTurkey Mugla Sitki Kocman University Engineering FacultyMetallurgy and Materials Engineering DepartmentMuglaTurkey h.seying Aydın TUBITAK MRCTurkey jiang Peng Chongqing UniversityChina Eskiseh.r Tech.ical University Engineering FacultyMaterials Science and Engineering DepartmentEskisehirTurkey

Electronic interactions of th. Group 2A elements with.magnesium h.ve been studied th.ough.th. dilute solid solutions in binary Mg-Ca,Mg-Sr and Mg-Ba *** investigation incorporated th. difference in th.‘Work Function'(ΔWF)measured via Kelvin Probe Force Microscopy(KPFM),as a property directly affected by interatomic bond types,*** electronic structure,nanoindentation measurements,and Stacking Fault Energy values reported in th. *** was sh.wn th.t th. nano-h.rdness of th. solid-solutionα-Mg ph.se ch.nged in th. order of Mg-Ca>Mg-Sr>***,it was sh.wn,by also considering th. nano-h.rdness levels,th.t SFE of a solid-solution is closely correlated with.its‘Work Function'***-h.rdness measurements on th. eutectics andΔWF difference between eutectic ph.ses enabled an assessment of th. relative bond strength.and th. pertinent electronic structures of th. eutectics in th. th.ee *** with.WF and at least qualitative verification of th.se computed SFE values with.some experimental measurement tech.iques were considered important as th.se computational meth.ds are based on zero Kelvin degree,relatively simple atomic models and a number of *** asserted by th.s investigation,if th. results of measurement tech.iques can be qualitatively correlated with.th.se of th. computational meth.ds,it can be possible to evaluate th. electronic structures in alloys,starting from binary systems,going to ternary and th.n multi-elemental *** investigation h.s sh.wn th.t such.a qualitative correlation is *** all,th. SFE values are not treated as absolute values but rath.r become essential in comparative investigations wh.n assessing th. influences of alloying elements at a fundamental level,th.t is,free electron density *** study indicated th.t th. principles of‘electronic metallurgy'in developing multi-elemental alloy systems can be followed via practical experimental meth.ds,i.e.ΔWF measurements using KPF

关键词： Mg alloys Dilute alloys Work function Stacking fault energy Kelvin probe force microscopy Sh.rt range order Miedema Nanoindentation Eutectics

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h.at Transfer and Friction Ch.racteristics of Printed Circuit h.at Exch.ngers with.Different Ch.nnel Structures for S-CO_(2) Power System

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Journal of Th.rmal Science 2024年第3期33卷 1132-1147页

作者： jiang Tao LI Mingjia Key Laboratory of Th.rmo-Fluid Science and Engineering of Ministry of Education School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an710049China Sch.ol of Mech.nical Engineering Beijing Institute of TechnologyBeijing100081China

Printed circuit h.at exch.nger(PCh.)h.s been widely used in supercritical carbon dioxide(S-CO_(2))power systems because of its h.gh.h.at transfer efficiency and good ***,due to th. large variety of PCh. configurations,ch.nnel selection in practical applications lacks a ***,th.s paper discussed th. h.at transfer and friction ch.racteristics and th. synergy of th.ee fields in th. ch.nnel under th. guidance of th. field synergy principle for four typical PCh. ***,th. compreh.nsive performance of four ch.nnels was ***,th. h.at transfer and friction factor correlations for S-CO_(2)in four ch.nnels were *** findings demonstrate th.t th. synergy of velocity and pressure fields of th. straigh. ch.nnel PCh. is better(β≈180°),so its resistance loss is relatively *** zigzag and sinusoidal wavy ch.nnels and th. airfoil fins can reduce th. angle a between th. temperature gradient and velocity,th.s enh.ncing th. h.at *** sinusoidal wavy ch.nnel can reduce flow resistance compared to th. zigzag ch.nnel due to th. rounded *** streamlined airfoil structure can guide th. flow and reduce backflow,th.s reducing resistance *** th. range of Re studied in th.s paper,th. maximum error of th. proposed h.at transfer and friction factor correlations of PCh. is 7.0%,wh.ch.sh.ws good fitting *** research.in th.s paper can provide a reference for th. selection and design of PCh. with.different ch.nnel configurations.

关键词： printed circuit h.at exch.nger supercritical carbon dioxide typical ch.nnel structure field synergy analysis

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An improved initial rotor position estimation meth.d using h.gh.frequency pulsating voltage injection for PMSM

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Defence Tech.ology（防务技术） 2024年第3期33卷 19-29页

作者： Yang jiang Ming Ch.ng Sch.ol of Electrical Engineering Southeast UniversityNanjing 210096China

h.gh.frequency pulsating voltage injection meth.d is a good candidate for detecting th. initial rotor position of permanent magnet synch.onous ***,traditional meth.ds require a large number of filters,wh.ch.leads to th. deterioration of system stability and dynamic *** order to solve th.se problems,a new signal demodulation meth.d is proposed in th.s *** proposed new meth.d can directly obtain th. amplitude of h.gh.frequency current,th.s eliminating th. use of filters,improving system stability and dynamic performance and saving th. work of adjusting filter *** addition,a new magnetic polarity detection meth.d is proposed,wh.ch.is robust to current measurement ***,experiments verify th. effectiveness of th. meth.d.

关键词： Initial position detection Signal demodulation algorith. Magnetic polarity detection Filter elimination

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Co/CoO h.terojunction rich.in oxygen vacancies introduced by O2 plasma embedded in mesoporous walls of carbon nanoboxes covered with.carbon nanotubes for rech.rgeable zinc-air battery

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Carbon Energy 2024年第7期6卷 14-25页

作者： Leijun Ye Weih.ng Ch.n Zh.ng-Jie jiang Zh.ngqing jiang Key Laboratory of Optical Field Manipulation of Zh.jiang Province Department of PhysicsZhejiang Sci-Tech UniversityHangzhouChina Department of Mech.nical Engineering Ningbo University of TechnologyNingboChina Guangzh.u Key Laboratory for Surface Ch.mistry of Energy Materials Guangdong Engineering and Technology Research Center for Surface Chemistry of Energy MaterialsCollege of Environment and EnergySouth China University of TechnologyGuangzhouChina

h.rein,Co/CoO h.terojunction nanoparticles(NPs)rich.in oxygen vacancies embedded in mesoporous walls of nitrogen-doped h.llow carbon nanoboxes coupled with.nitrogen-doped carbon nanotubes(P-Co/CoOV@Nh.NB@NCNT)are well designed th.ough.zeolite-imidazole framework(ZIF-67)carbonization,ch.mical vapor deposition,and O_(2) plasma *** a result,th. th.eedimensional Nh.NBs coupled with.NCNTs and unique h.terojunction with.rich.oxygen vacancies reduce th. ch.rge transport resistance and accelerate th. catalytic reaction rate of th. P-Co/CoOV@Nh.NB@NCNT,and th.y display exceedingly good electrocatalytic performance for oxygen reduction reaction(ORR,h.lfwave potential[EORR,1/2=0.855 V *** h.drogen electrode])and oxygen evolution reaction(OER,overpotential(η_(OER,10)=377mV@10mA cm^(−2)),wh.ch.exceeds th.t of th. commercial Pt/C+RuO_(2) and most of th. formerly reported ***,both.th. aqueous and flexible foldable all-solid-state rech.rgeable zinc-air batteries(ZABs)assembled with.th. P-Co/CoOV@Nh.NB@NCNT catalyst reveal a large maximum power density and outstanding long-term cycling ***-principles density functional th.ory calculations sh.w th.t th. formation of h.terojunctions and oxygen vacancies enh.nces conductivity,reduces reaction energy barriers,and accelerates reaction kinetics *** work opens up a new avenue for th. facile construction of h.gh.y active,structurally stable,and cost-effective bifunctional catalysts for ZABs.

关键词： h.terojunction oxygen evolution/reduction reaction oxygen vacancies rech.rgeable zinc–air battery th.ee‐dimensional nitrogen‐doped h.llow carbon nanoboxes

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h.brid rogue waves and breath.r solutions on th. double-periodic background for th. Kundu-DNLS equation

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Communications in Th.oretical Ph.sics 2024年第5期76卷 33-48页

作者： DongZh. jiang Zh.qilao College of Math.matics Science Inner Mongolia Normal UniversityHohhot 01022China Center for Applied Math.matical Science Inner MongoliaHohhot 010022China

In th.s paper,by using th. Darboux transformation(DT)meth.d and th. Taylor expansion meth.d,a new nth.order determinant of th. h.brid rogue waves and breath.rs solution on th. double-periodic background of th. Kundu-DNLS equation is constructed wh.n n is *** and rogue waves can be obtained from th.s determinant,*** to th.s,th. h.brid rogue waves and breath.rs solutions on th. different periodic backgrounds are given explicitly,including th. single-periodic background,th. double-periodic background and th. plane wave background by selecting different *** addition,th. form of th. obtained solutions is summarized.

关键词： double-periodic background h.brid rogue waves and breath.r darboux transformation Kundu-DNLS equation

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A newly unraveled 13.6-year oscillation from GPS displacements and its potential implications for th. dynamic reference frame

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Science Ch.na Earth.Sciences 2024年第10期67卷 3204-3212页

作者： h.o DING Weiping jiang Sch.ol of Geodesy and Geomatics Hubei Luojia LaboratoryWuhan UniversityWuhan 430079China GNSS Research.Center Wuhan UniversityWuhan 430079China

Numerous practical geodetic and geoph.sical applications necessitate precise measurements of GNSS displacements at th. millimeter or sub-millimeter level. To attain such.precision, it is imperative to identify and analyze th. unidentified decadal signals inh.rent in th. GPS displacements. In th.s research. we employ th. optimal sequence estimation meth.d to effectively detect an about 13.6-year oscillational signal with.an excited amplitude of 3.6±1.2 mm in th. U-components of th. GPS displacements. It is noteworth. th.t th.s signal demonstrates a consistent spatial pattern ch.racterized by th. sph.rical h.rmonic Y_(2,-2). We conduct a comparative analysis with.th. 13.6-year oscillation observed in length.of-day variations(and geomagnetic records), finding th.t th.y are in reverse ph.se. After eliminating th. Earth.s external excitation sources th.ough.th. utilization of two distinct in-situ h.drological records, we suggest th.t th. 13.6-year GPS signal may come from th. internal motions with.n th. Earth. h.wever, th. specific excitation source and th. detailed ph.sical mech.nism remain uncertain. Additionally, we develop a math.matical displacement model to explain th. 13.6-year signal. Our findings indicate th.t th.s signal can result in displacements of up to 1.37 mm and velocity effects of 0.63 mm/yr(for U-component) at maximum. Th.se results underscore th. necessity of incorporating th.s 13.6-year signal into th. construction and maintenance of a dynamic reference frame at th. millimeter level.

关键词： GPS displacements Decadal ch.nges 13.6-year oscillation Displacement model Dynamic reference frame

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Capturing Plateau-Rayleigh.instability in silver nanowires via ultrafast electron microscopy

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Nano Research 2024年第9期17卷 8402-8407页

作者： Sh.ai jiang Volkan Ortalan Department of Materials Science and Engineering University of ConnecticutStorrsCT 06269USA

Understanding th. structural stability of nanomaterials such.as nanowires is imperative for th.ir practical ***,using single-sh.t ultrafast transmission electron microscopy,we captured th. Plateau-Rayleigh.instability beh.vior of silver nanowires decomposing into silver nanoparticles upon laser irradiation on nanosecond time *** found th.t th.s dynamic process can be accelerated by a factor of 10 th.ough.increasing th. peak laser fluence from 6.03 to 14.60 mJ/cm^(2).Moreover,by comparing th. laser fluence required to initiate th. Plateau-Rayleigh.instability in silver nanowires on carbon and Formvar membranes,it was found th.t th. main driving force for th. Plateau-Rayleigh.instability in th.s study was substrate *** element analysis and molecular dynamics simulations are also applied to estimate th. temperature jump of th. nanowires and atomistic beh.vior,*** addition,th. complex motions of silver nanowires under laser irradiation were systematically investigated by combining th. results of ultrafast transmission electron microscopy with.scanning electron microscopy ch.racterizations and were determined to be related to nanowire-membrane interactions or pre-existing stresses on th. nanowires,wh.ch.in turn demonstrated th. potential of ultrafast transmission electron microscopy for th. ch.racterization of nanomaterials and devices under extreme conditions.

关键词： silver nanowire Plateau-Rayleigh.instability ultrafast transmission electron microscopy molecular dynamics simulation

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Mo_(2)B_(2)O_(2)MBene for Efficient Electroch.mical CO Reduction to C_(2)Ch.micals:Computational Exploration

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Energy & Environmental Materials 2024年第6期7卷 342-350页

作者： Bikun Zh.ng Jianwen jiang Department of Ch.mical and Biomolecular Engineering National University of SingaporeSingapore 117576Singapore

Emerging as a new class of two-dimensional materials with.atomically th.n layers,MBenes h.ve great potential for many important applications such.as energy storage and *** mitigating carbon footprint,th.re h.s been increasing interest in CO_(2)/CO conversion on MBenes,but mostly focused on C_(1)products.C^(2+)ch.micals generally possess h.gh.r energy densities and wider applications th.n C_(1)***,C–C coupling is tech.ically ch.llenging because of h.gh.energy requirement and currently few catalysts are suited for th.s ***,we explore electroch.mical CO reduction reaction to C_(2)ch.micals on Mo_(2)B_(2)O_(2)MBene via density-functional th.ory ***,th. most favorable CO–COh.coupling is revealed to be a spontaneous and barrierless process,making Mo_(2)B_(2)O_(2)an efficient catalyst for C–C *** C_(1)and C_(2)ch.micals,eth.nol is predicted to be th. primary ***,by ch.rge and bond analysis,it is unraveled th.t th.re exist significantly more unbonded electrons in th. C atom of intermediate*COh.th.n oth.r C_(1)intermediates,wh.ch.is responsible for th. facile C–C *** an atomic scale,th.s work provides microscopic insigh. into C–C coupling process and suggests Mo_(2)B_(2)O_(2)a promising catalyst for electroch.mical CO reduction to C_(2)ch.micals.

关键词： C_(2)ch.micals C-C coupling density-functional th.ory MBene Mo2B2O2

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Drug-Target Interactions Prediction Based on Signed h.terogeneous Graph.Neural Networks

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Ch.nese Journal of Electronics 2024年第1期33卷 231-244页

作者： Ming Ch.N Yajian jiang Xiujuan LEI Yi PAN Ch.nyan JI Wei jiang College of Information Science and Engineering Hunan Normal University Sch.ol of Computer Science Shaanxi Normal University Faculty of Computer Science and Control Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences Computer Science Department BNU-HKBU United International College

Drug-target interactions(DTIs) prediction plays an important role in th. process of drug *** computational meth.ds treat it as a binary prediction problem, determining wh.th.r th.re are connections between drugs and targets wh.le ignoring relational types information. Considering th. positive or negative effects of DTIs will facilitate th. study on compreh.nsive mech.nisms of multiple drugs on a common target, in th.s work, we model DTIs on signed h.terogeneous networks, th.ough.categorizing interaction patterns of DTIs and additionally extracting interactions with.n drug pairs and target protein pairs. We propose signed h.terogeneous graph.neural networks(Sh.NNs), furth.r put forward an end-to-end framework for signed DTIs prediction, called Sh.NN-DTI,wh.ch.not only adapts to signed bipartite networks, but also could naturally incorporate auxiliary information from drug-drug interactions(DDIs) and protein-protein interactions(PPIs). For th. framework, we solve th. message passing and aggregation problem on signed DTI networks, and consider different training modes on th. wh.le networks consisting of DTIs, DDIs and PPIs. Experiments are conducted on two datasets extracted from Drug Bank and related databases, under different settings of initial inputs, embedding dimensions and training modes. Th. prediction results sh.w excellent performance in terms of metric indicators, and th. feasibility is furth.r verified by th. case study with.two drugs on breast cancer.

关键词： Drugs Training Proteins Measurement Message passing Prediction meth.ds Graph.neural networks

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