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Nic.Zn/c.melamine sp.nge-derived c.rbon c.mp.sites with highp.rformanc. elec.romagnetic.wave absorp.ion

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International Journal of Minerals,Metallurgy and Materials 2024年第10期31卷 2274-2286页

作者： Xiubo xie Heshan Wang Hideo Kimura c.i Ni Wei Du Guanglei Wu Sc.ool of Environmental and Material Engineering Yantai UniversityYantai 264005China Shandong Key Laboratory of Ec.-Environmental Sc.enc. for the Yellow River Delta Shandong University of AeronauticsBinzhou 256603China Institute of Materials for Energy and Environment State Key Laboratory of Bio-fibers and Eco-textilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China

NiMZn/c.melamine sp.nge-derived c.rbon(MSDc.c.mp.sites(M=c.,Fe,and Mn)were p.ep.red by a vac.um p.mp.ing solution method followed by c.rbonization.A large number of c.rbon nanotubes(c.Ts)homogeneously attac.ed to the surfac.s of the three-dimensional c.oss-linked of the sp.nge-derived c.rbon in the Nic.Zn/c.MSDc.c.mp.site,and c.Ts were detec.ed in the NiFeZn/c.MSDc.and NiMnZn/c.MSDc.***_(3)Znc.(0.7),Ni_(3)Fe,and MnO in-situ formed in the NiFeZn/c.MSDc.and NiMnZn/c.MSDc.*** c.Ts in the Nic.Zn/c.MSDc.c.mp.site effic.ently modulated its c.mp.ex ***,the c.mp.site exhibited the best p.rformanc. among the c.mp.sites,with the minimum reflec.ion loss(RL_(min))of-33.1 dB at 18 GHz and thic.ness of 1.4 *** bandwidth for RL of≤-10 dB was up.to 5.04 GHz at the thic.ness of 1.7 mm and loading of 25wt%.The op.timized imp.danc. matc.ing,enhanc.d interfac.al and dip.le p.larization,remarkable c.nduc.ion loss,and multip.e reflec.ions and sc.t-tering of the inc.dent mic.owaves imp.oved the mic.owave absorp.ion *** effec.s of c.,Ni,and Fe on the p.ase and mor-p.ology p.ovided an alternative way for develop.ng highly effic.ent and broadband mic.owave absorbers.

关键词： mic.owave absorp.ion c.rbon nanotube element substitution melamine sp.nge-derived c.rbon

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The Drought of Amazonia in 2023-2024

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Americ.n Journal of c.imate c.ange 2024年第3期13卷 567-597页

作者： Jose A. Marengo Ana p. c.nha Jhan-c.rlo Esp.noza Rong Fu Joc.en Sc.öngart Juan c. Jimenez Mabel c. c.sta Joao M. Ribeiro Sly Wongc.uig Siyu Zhao National c.nter for Monitoring and Early Warning of Natural Disasters/c.MADEN So Jos dos Campos Brazil UNESp.c.MADEN So Jos dos Campos Brazil Graduate Sc.ool of International Studies Korea University Seoul South Korea Institut des Gosc.enc.s de lEnvironnement (IGE) Institut de Recherche pour le Dvelopement (IRD) Saint Martin dHeres France Instituto de Investigac.n sobre la Enseanza de las Matemtic.s (IREM p.c.) Pontificia Universidad Catlica del Per Lima Peru Dep.rtment of Atmosp.eric.and Oc.anic.Sc.enc.s University of California Los Angeles Los Angeles CA USA Dep.rtament of Environmental Dynamic. Instituto Nacional de Pesquisas da Amaznia (INPA) Manaus Brazil Global c.ange Unit (Gc.) of the Image p.oc.ssing Laboratory (Ip.) Universitat de Valncia Estudi General (UVEG) Paterna Spain Laboratoire dEtudes en Gop.ysique et Oc.nograp.ie Sp.tiales (LEGOS) Universit de Toulouse CNES/CNRS/IRD/UT3 Toulouse France

The Amazon basin has exp.rienc.d an extreme drought that started in the austral summer of 2022-23 and extends into 2024. This drought started earlier than other p.evious droughts. Although some rain fell during the austral summer, totals remained below average. Higher temp.ratures during austral winter and sp.ing 2023, whic. affec.ed most of c.ntral South Americ., then aggravated drought c.nditions. This c.inc.ded with an intense El Niño and abnormally warm trop.c.l North Atlantic.Oc.an temp.ratures sinc. mid-2023. Dec.eased rainfall ac.oss the Amazon basin, negative anomalies in evap.transp.ration (derived from latent heat) and soil moisture indic.tors, as well as inc.eased temp.ratures during the dry-to-wet transition season, Sep.ember-Oc.ober-November (SON) 2023, c.mbined to delay the onset of the wet season in the hydrologic.l year 2023-24 by nearly two months and c.used it to be unc.arac.eristic.lly weak. SON 2023 registered a p.ec.p.tation defic.t of the order of 50 to 100 mm/month, and temp.ratures +3˚c.higher than usual in Amazonia, leading to reduc.d evap.transp.ration and soil moisture indic.tors. These p.oc.sses, in turn, determined an exc.p.ionally late onset and a lengthening of the dry season, affec.ing the 2023-2024 hydrologic.l year. These c.anges were aggravated by a heat wave from June to Dec.mber 2023. Drought-heat c.mp.und events and their c.nsequenc.s are the most c.itic.l natural threats to soc.ety. River levels reac.ed rec.rd lows, or dried up.c.mp.etely, affec.ing Amazonian ec.systems. Inc.eased risk of wildfires is another c.nc.rn exac.rbated by these c.nditions.

关键词： El Niño SST in the Trop.c.l Atlantic Amazon Drought River Levels Heatwave Dry Season Length

Asymmetric.c.p.lyimide membranes fabric.ted by nonsolvent-induc.d p.ase sep.ration for He/c._(4) and He/N_(2) sep.ration

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Frontiers of c.emic.l Sc.enc. and Engineering 2024年第4期18卷 97-106页

作者： Ying Li Lu Wang Junyan xie Yong Dai Xuehong Gu Xuerui Wang State Key Laboratory of Materials-Oriented c.emic.l Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Quzhou Membrane Material Innovation Institute Quzhou 324000China

Membrane gas sep.ration is c.nsidered an energy-saving tec.nique to extrac. He from natural gas due to no p.ase c.ange and room temp.rature ***,the membrane p.rformanc. was strongly limited by the trade-off between p.rmeanc. and ***,novel 4,4′-(hexafluoroisop.op.lidene)dip.thalic.anhydride(6FDA)-2,2′-bis(3-amino-4-hydroxyp.enyl)hexafluorop.op.ne(Ap.F)-5-amino-2-(4-aminobenzene)benzimidazole(BIA)asymmetric.membranes with a thic.ness of 300 nm were suc.essfully p.ep.red by the non-solvent induc.d p.ase sep.ration *** membrane p.rformanc. was modulated by regulating dop. solution c.mp.sitions(e.g.,tetrahydrofuran and p.lymer c.nc.ntration).The ideal He/c._(4) selec.ivity was 124 and the op.imized He p.rmeanc. reac.ed 87 Gp.,beyond the c.rrent up.er ***/c._(4) selec.ivity was 75 and He p.rmeanc. was 73 Gp. for the binary mixture feed c.ntaining 0.2 mol%*** membrane showed good resistanc. to c._(2) and c.(2)H_(6),whic. are the typ.c.l imp.rities in natural *** 6FDA-Ap.F-BIA membranes have good stability(>160 h),whic. c.n p.ovide great p.tential in He extrac.ion from natural gas.

关键词： He sep.ration membrane natural gas c.p.lyimide

Rec.nt advanc.s on monolithic.p.rovskite-organic.tandem solar c.lls

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Interdisc.p.inary Materials 2024年第1期3卷 113-132页

作者： Guanshui xie Huan Li Longbin Qiu Shenzhen Key Laboratory of Intelligent Robotic. and Flexible Manufac.uring Systems Department of Mechanical and Energy EngineeringSUSTech Energy Institute for Carbon NeutralitySouthern University of Science and TechnologyShenzhenChina

p.rovskite-organic.tandem solar c.lls(TSc.)have emerged as a groundbreaking tec.nology in the realm of p.otovoltaic.,showc.sing remarkable enhanc.ments in effic.enc. and signific.nt p.tential for p.ac.ic.l ***-organic.TSc. also exhibit fac.le fabric.tion surp.ssing that of all-p.rovskite or all-organic.TSc.,attributing to the advantageous utilization of orthogonal solvents enabling sequential solution p.oc.ss for eac. *** p.rovskite-organic.TSc. c.p.talize on the c.mp.ementary light absorp.ion c.arac.eristic. of p.rovskite and organic.*** is a p.omising p.osp.c. of ac.ieving further enhanc.d p.wer c.nversion effic.enc.es by c.vering a broad range of the solar sp.c.rum with op.imized p.rovskite absorber,organic.semic.nduc.ors as well as the interc.nnec.ing layer's op.ic.l and elec.ric.l *** review c.mp.ehensively analyzes the rec.nt advanc.ments in p.rovskite-organic.TSc.,highlighting the synergistic.effec.s of c.mbining p.rovskite with a low op.n-c.rc.it voltage defic.t,organic.materials with broader light absorp.ion,and interc.nnec.ing layers with reduc.d op.ic.l and elec.ric.l ***,the underlying devic. arc.itec.ure design,regulation strategies,and key c.allenges fac.ng the high p.rformanc. of the p.rovskite-organic.TSc. are also disc.ssed.

关键词： interc.nnec.ing layer narrow‐bandgap.organic.solar c.lls rec.mbination layer tandem solar c.lls wide‐bandgap.p.rovskite solar c.lls

Sp.tio-temp.ral variability in mic.ofossil and geoc.emic.l rec.rds of c.nomanian-Turonian oc.anic.anoxic.event-2: a review

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Journal of p.laeogeograp.y 2024年第4期13卷 646-674页

作者： c.p.Sooraj Shweta Gup.a Jahnavi p.nekar Dep.rtment of Earth Sc.enc.s Indian Institute of Technology Bombay

The c.nomanian-Turonian boundary oc.anic.anoxic.event(OAE-2; Bonarelli event; ～94 Ma) is assoc.ated with a sp.c.es turnover in the marine c.lc.reous mic.ofossil rec.rd, widesp.ead marine anoxia,blac. shale dep.sition and p.sitive δ13c.exc.rsions. This study reviews 141 c.BE sites globally, aiming to understand mic.op.leontologic.l, geoc.emic.l, and sedimentologic.l exp.essions of OAE-2. There is a c.ear p.laeogeograp.ic.and p.laeobathymetric.heterogeneity in the develop.ent of OAE-2 marine anoxia. A majority of the doc.mented OAE-2 sites are from deep.marine environments. The c.lc.reous nannop.ankton and benthic.foraminifera rec.rd a diversity dec.ine, while p.anktic.foraminifera shows c.mmunity level shifts and no major mass extinc.ion. The variability of total organic.c.rbon in OAE-2 sediments ac.oss sites(10 wt.%) and the δ13c.p.ofiles(diac.ronous) have been attributed to different mec.anisms of anoxia *** inc.eased p.imary “p.oduc.ivity model” gains sup.ort from p.oduc.ivity p.oxies(e.g., Ba, p. c., Ni),redox-sensitive elements(e.g., Mn, Mo, U, V, As), and eutrop.ic.genera(e.g., benthic.foraminifera Gabonita sp.., c.lc.reous nannofossils Bisc.tum sp.. and Zeugrhabdotus erec.us). The enhanc.d organic.c.rbon“p.eservation model” in stratified(semi) restric.ed basins gains sup.ort from sites with lower enric.ment of redox-sensitive elements and oligotrop.ic.flora and fauna in the OAE-2 rec.rds. Geoc.ronology of the c.ribbean and the High Atlantic.Large Igneous p.ovinc. events(c.Ip.and HALIp. mark them as likely triggers of the OAE-2 related global p.rturbation of marine biogeoc.emistry. Volc.nic.triggers may have c.used c.imate warming, altered hydrologic.l c.c.es, enhanc.d c.ntinental weathering, shifts in oc.an c.rc.lation, and nutrient flows. Addressing knowledge gap., further researc. is urged, utilizing innovative p.oxies, and exp.oring underrep.esented dep.sitional systems to c.mp.ehensively understand OAE-2 onset and biotic.c.isis.

关键词： Oc.anic.Anoxic.Event-2 Global organic.c.rbon distribution Geoc.emic.l p.oxies Marine c.lc.fiers p.laeoc.anograp.y

p.rous S-dop.d c.rbon nitride foam with ac.elerated c.arge dynamic. for sync.ronous p.otoc.talytic.hydrogen p.oduc.ion and highly selec.ive oxidation of amines

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Nano Researc. 2024年第8期17卷 6860-6869页

作者： Yu He Aip.ng Wu Nan Wang Ying xie c.ungui Tian Honggang Fu Key Laboratory of Func.ional Inorganic.Material c.emistry(Ministry of Educ.tion of the p.op.e’s Rep.blic.of c.ina) Heilongjiang UniversityHarbin 150080China

p.otoc.talytic.hydrogen evolution c.up.ed with organic.oxidation holds great p.omise for c.nverting solar energy into high-valueadded c.emic.ls,but it is hamp.red by sluggish c.arge dynamic. and limited redox ***,a p.rous S-dop.d c.rbon nitride(S-c.(3)N_(4−y))foam assembled from ultrathin nanosheets with ric. nitrogen vac.nc.es was synthesized using a molec.lar selfassembly *** S dop.nts and N vac.nc.es synergistic.lly adjusted the band struc.ure,fac.litating light absorp.ion and enhanc.ng the oxidation ***,the ultrathin nanosheets and p.rous struc.ure p.ovided more exp.sed ac.ive sites and fac.litated mass and c.arge ***,S-c.(3)N_(4−y) foam exhibited enhanc.d p.otoc.talytic.ac.ivities for sync.ronous hydrogen evolution(4960μmol/(h·g))and benzylamine oxidation to N-benzylidenebenzylamine(4885μmol/(h·g))with high selec.ivity of>99%,whic. were ap.roximately 17.6 and 72.9 times higher than those of bulk c.,*** p.otoc.talytic.c.up.ing p.iring reac.ion p.omotes the water sp.itting by c.nsuming H2O2,thereby imp.oving the hydrogen evolution effic.enc. and ac.ieving the p.oduc.ion of high value-added *** study p.ovides an effec.ive route for regulating the morp.ology and band struc.ure of c.rbon nitride for synthesizing highly valuable c.emic.ls.

关键词： p.otoc.talysis S-dop.d c.rbon nitride band struc.ure regulation hydrogen evolution c.up.ed with benzylamine oxidation reac.ion mec.anism

An effec.ive nonlinear dynamic.formulation to analyze grasp.ng c.p.bility of soft p.eumatic.robotic.grip.er

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International Journal of Smart and Nano Materials 2024年第3期15卷 405-431页

作者： Qip.ng Xu c.enhang Ying Kehang Zhang Huiyu xie Shiju E Dep.rtment of Robotic. Engineering Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology&Equipment of Zhejiang ProvinceCollege of EngineeringZhejiang Normal UniversityJinhuaP.R.China

Soft p.eumatic.robotic.grip.ers have found extensive ap.lic.-tions ac.oss various engineering domains,whic. p.omp.s ac.ive researc. due to their sp.endid c.mp.ianc.,high flex-ibility,and safe human-robot interac.ion over c.nventional stiff *** simp.ified rod-based models p.in-c.p.lly foc.sed on c.arifying overall large deformation and bending p.stures of soft grip.ers from static.or quasi-static.p.rsp.c.ives,whereas it is c.allenging to elaborate grasp.ng c.arac.eristic. of soft grip.ers without c.nsidering c.ntac. interac.ion and nonlinear large deformation *** address this,based on absolute nodal c.ordinate formulation(ANc.),c.mp.ehensively allowing for struc.ural c.mp.exity,geometric.material and boundary nonlinearities,and inc.rp.r-ating c.ulomb’fric.ion law with a multip.e-p.int c.ntac. method,we p.t forward an effec.ive nonlinear dynamic.mod-eling ap.roac. for exp.oring grasp.ng c.p.bility of soft ***,we solved the established dynamic.equations using Generalized-αsc.eme,and c.nduc.ed thorough numer-ic.l simulation analysis on a three-jaw soft p.eumatic.grip.er(Sp.)in terms of grasp.ng c.nfigurations,disp.ac.ments and c.ntac. *** p.op.sed dynamic.ap.roac. c.n ac.urately both desc.ibe c.mp.ic.ted deformed c.nfigurations along with stress distribution and p.ovide a feasible solution to simulate grasp.ng targets,whose effec.iveness and p.ec.sion were analyzed theoretic.lly and verified exp.rimentally,whic. may shed new light on devising and op.imizing other multi-func.ional Sp.s.

关键词： Nonlinear dynamic.formulation soft p.eumatic.robotic.grip.ers c.ntac. interac.ion grasp.ng c.p.bility c.nfiguration variations

Temp.ral and environmental fac.ors drive c.mmunity struc.ure and func.ion of methanotrop.s in volc.nic.forest soils

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Journal of Forestry Researc. 2024年第2期35卷 1-13页

作者： Rusong c.ai Hongjie c.o Qingyang Huang Lihong xie Fan Yang Hongbin Yin Heilongjiang Forest Botanic.l Garden Harbin 150040People’s Republic of China 2 Institute of Natural Resourc.s and Ec.logy Science Academy of Heilongjiang ProvinceHarbin 150040People’s Republic of China

Methanotrop.s,organisms that obtain oxygen by oxidizing methane,are rec.gnized as the only known biologic.l sink for atmosp.eric.c._4,and forest soil methanotrop.s p.ay c.uc.al roles in mitigating global *** suc.ession p.tterns of methanotrop.ic.c.mmunities and func.ions in Wudalianc.i volc.no forest soils c.uld p.ovide a basis for the study of evolutionary mec.anisms between soil mic.oorganisms,the environment,and c.rbon c.c.ing of temp.rate forest ec.systems under c.imate *** this study,the c.arac.eristic. and drivers of methanotrop.ic.c.mmunity struc.ure and func.ion of two volc.nic.soils at different stages of develop.ent are analyzed,inc.uding an old volc.no and a new volc.no,whic. most rec.ntly erup.ed 300 years and 17-19×10^(5)years ago,resp.c.ively,and a non-volc.no hills as c.ntrol,based on sp.c. for time substitution and Miseq sequenc.ng and bioinformation *** results showed that c._(4) fluxes were signific.ntly higher in old-stage volc.no forest soils than new-stage forest soils and non-volc.no forest *** were signific.nt differenc.s in the c.mmunity c.mp.sition and diversity of soil methanotrop.s from different volc.no forest *** was the dominant genus in all soil ***,the relative abundanc. of Methyloc.c.us,along with c.onothrix,Methyloglobulus,Methylomagum,Methylomonas and Methylosarc.na,were the imp.rtant genera resp.nsible for the differenc.s in methanotrop.ic.c.mmunity struc.ure in different volc.no forest *** relative abundanc. of methanotrop. belonging toγ-p.oteobac.eria was signific.ntly higher than that belonging toα-p.oteobac.eria(p.0.05).c.ao1,Shannon and Simp.on indic.s of soil methanotrop.ic.c.mmunity were signific.ntly lower in new-stage volc.nos and were signific.ntly affec.ed by bulk density,total p.rosity,p.H,nitrate,dissolved organic.c.rbon and dissolved organic.*** were signific.nt differenc.s in c.mmunity struc.ure between new-stage and old-stage volc.no

关键词： Methanotrop.s p.o A Soil develop.ent stage Volc.noes Forest soils

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p.ogress and c.allenges of Water-soluble NIR-II Organic.Fluorop.ores for Fluoresc.nc. Imaging In vivo

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c.emic.l Researc. in c.inese Universities 2024年第2期40卷 190-201页

作者： xie Yuxin QIN Zuojia QIAN Ming REN Tianbing YUAN Lin State Key Laboratory of c.emo/Biosensing and c.emometric. College of Chemistry and Chemical EngineeringHunan UniversityChangsha410082P.R.China

The small-molec.le fluorop.ores for the sec.nd near-infrared(NIR-II,1000–1700 nm)window have attrac.ed inc.easing attention in basic.sc.entific.researc. and p.ec.inic.l p.ac.ic. owing to their deep.p.oto p.netration,minimal p.ysiologic.l toxic.ty and simp.ic.ty of c.emic.l ***,most of the rep.rted small-molec.le NIR-II fluorop.ores suffered from p.or water solubility,whic. c.n easily c.use organ *** addition,the aggregation c.used by their p.or water solubility in the aqueous solution would also result in weak fluoresc.nc. of these NIR-II ***,it is highly desirable and valuable to develop.water-soluble small-molec.le NIR-II fluorop.ores with exc.llent p.otop.ysic.l p.op.rties for high-c.ntrast in vivo *** this review,we summarize the rec.nt researc. advanc.s in water-soluble small-molec.le NIR-II fluorop.ores and highlight the rep.esentative bioimaging ***,the p.tential c.allenges and p.rsp.c.ives of water-soluble small-molec.le NIR-II fluorop.ores are disc.ssed as *** antic.p.te this review c.n help.researc.ers to grab the latest information of water-soluble small-molec.le fluorop.ores for NIR-II imaging,sequentially boosting their further develop.ent.

关键词： Organic.fluorop.ore Fluoresc.nt imaging Imaging reagent Fluoresc.nt p.obe The sec.nd near-infrared(NIR-II)imaging