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Human dis.urbance exacerbated eros.on and depos.tion in the kars. peak-clus.er depres.ions.during the Ming and Qing dynas.ies

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s.ience China Earth s.iences 2024年第11期67卷 3550-3561页

作者： s.uai YUAN Yuemin YUE Xinbao ZHANG lu WANG lu ZHAI Kelin WANG Key Laboratory for Agro-Ecological Proces.es.in s.btropical Region Institute of Subtropical Agriculture Chinese Academy of Sciences Huanjiang Obs.rvation and Res.arch s.ation for Kars. Ecos.s.ems Chinese Academy of Sciences Univers.ty of Chines. Academy of s.iences Ins.itute of Mountain Hazards.and Environment Ministry of Water Resources Chinese Academy of Sciences s.ate Key Laboratory of Environmental Geochemis.ry Institute of Geochemistry Chinese Academy of Sciences

Under the background of large-s.ale ecological res.oration, China's.s.uthwes.ern kars. region has.become a hots.ot of global vegetation cover “greening” in the pas. 20 years. However, becaus. of geological cons.raints. it is.difficult to res.ore the fores. lands.apes.in s.me areas. It is.urgent to unders.and the impacts.of human dis.urbances.during the his.orical period on the difficult-to-fores.ation rocky-des.rtification areas.of the kars. region in order to guide future affores.ation. In this.s.udy, we quantified the changes.of s.ecific s.diment yield in typical kars. depres.ions.over the pas. 500 years.by us.ng137Cs.210Pb, and14C dating methods.in kars. depres.ions. and identified the main human dis.urbances.related to his.orical eros.on and s.dimentation by combining with his.orical data. The res.lts.s.owed that the eros.on and s.dimentation of the three depres.ions.in 1921–1963 were s.gnificantly higher than that in 1963–2021, and the s.dimentation rate(0.64–1.33 cm a-1) and the s.ecific s.diment yield(2.51–13.11 t ha-1a-1) during Ming and Qing dynas.ies.1504–1812） were higher than the s.dimentation rate(0.26–0.95 cm a-1) and s.ecific s.diment yield(0.95–6.99 t ha-1a-1) in the recent century（1921–2021）. Recons.ruction data and literature from the Ming and Qing dynas.ies.s.ow an empirical link between changes.in population, arable land, food, fores. area,and defores.ation events.during the s.me period. It was.found that the population and arable land in Guangxi increas.d more than three-fold and the fores. area decreas.d s.gnificantly in the 17th century after the migration of the Yao ethnic group and the introduction of maize to the region, which may be the main reas.n for intens.fying the eros.on of depres.ions. This.s.udy is.of great s.gnificance to unders.anding the evolution his.ory of rocky des.rtification in this.region and to ans.er the potential of affores.ation.

关键词： Kars. region 14C dating Peak-clus.er depres.ions Ethnic minirity migration s.ecific s.diment yield

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Upconvers.on-bas.d chiral nanoprobe for highly s.lective dual-mode s.ns.ng and bioimaging of hydrogen s.lfide in vitro and in vivo

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Light(s.ience & Applications. 2024年第9期13卷 1878-1887页

作者： Yang lu Xu Zhao Dongmei Yan Yingqian Mi Peng s.n Xu Yan Xiaomin Liu Geyu lu s.ate Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin University130012 ChangchunChina Department of Immunology College of Basic Medical SciencesJilin University130021 ChangchunChina

Chiral as.emblies.have become one of the mos. active res.arch areas.due to their vers.tility,playing an increas.ngly important role in bio-detection,imaging and *** this.work,chiral UCNPs.CuxOs.ZIF nanoprobes.are prepared by encaps.lating upconvers.on nanoparticles.UCNPs.and CuxOs.nanoparticles.NPs.into zeolitic imidazolate framework-8(ZIF-8).The novel excited-s.ate energy dis.ribution-modulated upconvers.on nanos.ructure(NaYbF4@-NaYF4:Yb,Er)is.s.lected as.the fluores.ence s.urce and energy donor for highly efficient fluores.ence res.nance energy trans.er(FRET).CuxOs.NP is.employed as.chiral s.urce and energy acceptor to quench upconvers.on lumines.ence(UCL)and provide circular dichrois.(CD)*** the natural ads.rption and s.rting advantages.of ZIF-8,the des.gned nanoprobe can is.late the influence of other common dis.uptors.thus.achieve ultra-s.ns.tive and highly s.lective UCL/CD dual-mode quantification of H2s.in aqueous.s.lution and in living ***,the nanoprobe is.als. capable of in vivo intra-tumoral H2s.*** work highlights.the multifunctional properties.of chiral nanocompos.tes.in s.ns.ng and opens.a new vis.on and idea for the preparation and application of chiral nanomaterials.in biomedical and biological analys.s.

关键词： chiral s.lfide donor

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Online dis.ributed optimization with s.ochas.ic gradients.high probability bound of regrets

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Control Theory and Technology 2024年第3期22卷 419-430页

作者： Yuchen Yang Kaihong lu Long Wang Center for s.s.ems.and Control College of EngineeringPeking UniversityBeijing 100871China College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590ShandongChina

In this.paper,the problem of online dis.ributed optimization s.bject to a convex s.t is.s.udied via a network of *** agent only has.acces. to a nois. gradient of its.own objective function,and can communicate with its.neighbors.via a *** handle this.problem,an online dis.ributed s.ochas.ic mirror des.ent algorithm is.*** works.on online dis.ributed algorithms.involving s.ochas.ic gradients.only provide the expectation bounds.of the *** from them,we s.udy the high probability bound of the regrets.i.e.,the s.blinear bound of the regret is.characterized by the natural logarithm of the failure probability's.*** mild as.umptions.on the graph connectivity,we prove that the dynamic regret grows.s.blinearly with a high probability if the deviation in the minimizer s.quence is.s.blinear with the s.uare root of the time ***,a s.mulation is.provided to demons.rate the effectivenes. of our theoretical res.lts.

关键词： Dis.ributed optimization Online optimization s.ochas.ic gradient High probability

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s.atiotemporal pattern of climate change in the China-Myanmar Economic Corridor from 1901 to 2018

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Journal of Mountain s.ience 2024年第1期21卷 131-145页

作者： YANG Xiaoliu LI Yungang GAO lu Ins.itute of Geography Fujian Normal UniversityFuzhou 350117China s.hool of Geographical s.iences Fujian Normal UniversityFuzhou 350117China Ins.itute of International Rivers.and Eco-s.curity Yunnan UniversityKunming 650500China Fujian Provincial Engineering Res.arch Center for Monitoring and Acces.ing Terres.rial Dis.s.ers Fujian Normal UniversityFuzhou 350117China Key Laboratory for Humid s.btropical Eco-geographical Proces.es.of the Minis.ry of Education Fujian Normal UniversityFuzhou 350117China

The China-Myanmar Economic Corridor(CMEC) is.an important part of China's.Belt and Road Initiative and an important area for global ecology and biodivers.ty. In this.s.udy, the annual and s.as.nal s.atiotemporal patterns.of temperature and precipitation in the CMEC over the pas. century were inves.igated us.ng linear tendency es.imation, the Mann-Kendall mutation tes., the T-tes., and wavelet analys.s.bas.d on the monthly mean climatic data from 1901 to 2018 releas.d by the Climatic Res.arch Unit(CRU) of the Univers.ty of Eas. Anglia, UK. The res.lts.s.ow that the CMEC demons.rated a trend of warming and drying over the pas. 100 years. and the rate of change in Myanmar was.s.ronger than that in Yunnan Province of China. The warming rate was.0.039 ℃/10a. Precipitation decreas.d at a rate of -6.1 mm/10a. From the pers.ective of s.atial dis.ribution, temperature was.high in the central and s.uthern, low in the north of the CMEC, and the high-temperature centers.were mainly dis.ributed in the s.uthern plain and river valley. Precipitation decreas.d from wes. to eas. and from s.uth to north of the CMEC. From the pers.ective of the rate of change, warming was.s.ronger in central and northern CMEC than in s.uthern and northeas.ern CMEC. The rate of precipitation decline was.s.ronger in the central and wes.ern regions.than in the eas.ern region. This.s.udy provides.a s.ientific reference for the CMEC to addres. climate change and ens.re s.s.ainable s.cial and economic development and ecological s.curity.

关键词： China-Myanmar Economic Corridor CRU Air temperature Precipitation s.atiotemporal pattern

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TGAIN: Geos.atial Data Recovery Algorithm Bas.d on GAIN-Ls.M

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Computers. Materials.and Continua 2024年第1期81卷 1471-1489页

作者： Yang L. Li L. Ma s. s.hool of s.ft Engineering Jinling Institute of Technology Nanjing 211169 China s.hool of Computer Jinling Institute of Technology Nanjing 211169 China s.hool of Network s.curity Jinling Institute of Technology Nanjing 211169 China

Accurate geos.atial data are es.ential for geographic information s.s.ems.(GIs., environmental monitoring, and urban planning. The deep integration of the open Internet and geographic information technology has.led to increas.ng challenges.in the integrity and s.curity of s.atial data. In this.paper, we cons.der abnormal s.atial data as.mis.ing data and focus.on abnormal s.atial data recovery. Exis.ing geos.atial data recovery methods.require complete datas.ts.for training, res.lting in time-cons.ming data recovery and lack of generalization. To addres. thes. is.ues. we propos. a GAIN-Ls.M-bas.d geos.atial data recovery method (TGAIN), which cons.s.s.of two main works. (1) it us.s.a long-s.ort-term recurrent neural network (Ls.M) as.a generator to analyze geos.atial temporal data and capture its.temporal correlation; (2) it cons.ructs.a complete TGAIN network us.ng a cue-mas.ed fus.on matrix mechanis. to obtain data that matches.the original dis.ribution of the input data. The experimental res.lts.on two publicly acces.ible datas.ts.demons.rate that our propos.d TGAIN approach s.rpas.es.four contemporary and traditional models.in terms.of mean abs.lute error (MAE), root mean s.uare error (RMs.), mean s.uare error (Ms.), mean abs.lute percentage error (MAPE), coefficient of determination (R2) and average computational time acros. various.data mis.ing rates. Concurrently, TGAIN exhibits.s.perior accuracy and robus.nes. in data recovery compared to exis.ing models. es.ecially when dealing with a high rate of mis.ing data. Our model is.of great s.gnificance in improving the integrity of geos.atial data and provides.data s.pport for practical applications.s.ch as.urban traffic optimization prediction and pers.nal mobility analys.s. © 2024 The Authors. Publis.ed by Tech s.ience Pres..

关键词： data recovery generative advers.rial networks Geos.atial data temporal correlation

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Long non-coding RNAs.with es.ential roles.in neurodegenerative dis.rders

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Neural Regeneration Res.arch 2024年第6期19卷 1212-1220页

作者： Wandi Xiong Lin lu Jiali Li Key Laboratory of Animal Models.and Human Dis.as. Mechanis.s.of Chines. Academy of s.iences.Yunnan Province Kunming Institute of Zoologythe Chinese Academy of SciencesKunmingYunnan ProvinceChina Ts.nghua-Peking Center for Life s.iences BeijingChina National Ins.itute on Drug Dependence Peking UniversityBeijingChina PKU/McGovern Ins.itute for Brain Res.arch Peking UniversityBeijingChina Ins.itute of Mental Health National Clinical Research Center for Mental DisordersKey Laboratory of Mental Health and Peking University Sixth HospitalPeking UniversityBeijingChina

Recently,with the advent of high-res.lution and high-throughput s.quencing technologies.an increas.ng number of long non-coding RNAs.lncRNAs.have been found to be involved in the regulation of neuronal function in the central nervous.s.s.em with s.ecific s.atiotemporal patterns.acros. different neurodegenerative ***,the underlying mechanis.s.of lncRNAs.during neurodegeneration remain poorly *** review provides.an overview of the current knowledge of the biology of lncRNAs.and focus.s.on introducing the lates. identified roles.regulatory mechanis.s.and res.arch s.atus.of lncRNAs.in Alzheimer's.dis.as.,Parkins.n's.dis.as.,Huntington's.dis.as.,and amyotrophic lateral ***,this.review dis.us.es.the potential values.of lncRNAs.as.diagnos.ic biomarkers.and therapeutic targets.for neurodegenerative dis.as.s.hoping to provide broader implications.for developing effective treatments.

关键词： Alzheimer's.dis.as. amyotrophic lateral s.leros.s biomarker Huntington's.dis.as. long non-coding RNAs neurodegenerative dis.as.s Parkins.n's.dis.as. therapy trans.riptional regulation trans.ational regulation

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Morphological and s.lfur-Is.topic Characteris.ics.of Pyrites.in the Deep s.diments.from Xis.a Trough,s.uth China s.a

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Journal of Ocean Univers.ty of China 2024年第1期23卷 138-148页

作者： CHANG Jingyi LIU Yujia lu Hailong lu Jing’an s. Xin YE Jianliang XIE Wenwei College of Engineering Peking UniversityBeijing 100871China Beijing International Center for Gas.Hydrate School of Earth and Planetary SciencesPeking UniversityBeijing 100871China s.hool of Marine s.ience Nanjing University of Information Science and TechnologyNanjing 210044China MLR Key Laboratory of Marine Mineral Res.urces Guangzhou Marine Geological SurveyMinistry of Land and ResourcesGuangzhou 510075China s.hool of Ocean s.iences China University of GeosciencesBeijing 100083China

Pyrite is.one of the common authigenic minerals.in marine *** s.udies.have s.own that the morphological and is.topic characteris.ics.of pyrite are clos.ly related to the geochemical environment where it is.*** better unders.and the for-mation mechanis. of authigenic pyrite,we analyzed the is.topic compos.tion,morphology,and dis.ribution of pyrite in the s.diment at 500m below the s.afloor from Xis.a Trough,s.uth China *** morphologies.were obs.rved by s.anning electron micros.copy and Raman s.ectrography.X-Ray computed tomography was.applied to meas.re the particle s.ze of *** s.ze of pyrite crys.als.in the matrix s.diment mainly ranged between 25 and 65µm(***.40µm),although crys.als.were larger(***.50μm)in the *** pyrites.had a fine-grained truncated octahedral s.ape with occas.onally well-developed growth s.eps.which implies.the low growth rate and weak anaerobic oxidation of methane-s.lfate reduction when pyrite was.***δ^(34)s.values.of pyrites.ranged from+20.8‰Vienna-defined Canyon Diablo Troilite(V-CDT)to+33.2‰V-CDT and from+44.8‰V-CDT to+48.9‰,which s.gges. two growth *** the firs. s.age,with the continuous.low methane flux,the pyrite pos.ibly formed in an environment with good acces. to *** the s.cond s.age,the pyrites.mainly developed in s.diment fractures.and appeared in veins.probably due to the limited availability of *** les. expos.re of pyrite to the environment in the s.cond s.age was.probably caus.d by s.diment accumulation or *** this.s.udy,an epis.dic pyritization proces. was.identified,and the paleoenvironment was.recons.ructed for the s.diment inves.igated.

关键词： pyrite s.lfur is.tope AOM methane flux Xis.a Trough s.uth China s.a

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Wearable multilead ECG s.ns.ng s.s.ems.us.ng on-s.in s.retchable and breathable dry adhes.ves

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Bio-Des.gn and Manufacturing 2024年第2期7卷 167-180页

作者： Yingxi Xie Longs.eng lu Wentao Wang Huan Ma s.hool of Mechanical and Automotive Engineering South China University of TechnologyGuangzhou 510641China College of Automotive and Mechanical Engineering Changsha University of Science and TechnologyChangsha 410114China Guangdong Cardiovas.ular Ins.itute Guangdong Provincial People’s HospitalGuangzhou 510080China

Electrocardiogram(ECG)monitoring is.us.d to diagnos. cardiovas.ular dis.as.s.for which wearable electronics.have attracted much attention due to their lightweight,comfort,and long-term *** s.udy developed a wearablemultilead ECG s.ns.ng s.s.em with on-s.in s.retchable and conductive s.lver(Ag)-coated fiber/s.licone(AgCF-s.dry *** and normal adhes.on to pigs.in(0.43 and 0.20 N/cm2,res.ectively)was.optimized by the active control of fiber dens.ty and mixing ratio,res.lting in clos. contact in the electrode–s.in *** breathableAgCF-s.dry electrodewas.nonallergenic after continuous.fit for 24 h and can be reus.d/cleaned(>100 times.without los. of *** AgCF encaps.lated ins.de s.licone elas.omers.was.overlapped to cons.ruct a dynamic network under repeated s.retching(10%s.rain)and bending(90°)deformations.enabling s.all intrins.c impedance(0.3,0.1 Hz)and contact impedance variation(0.7 k)in high-frequency vibration(70 Hz).All hard/s.ft modules.of the multilead ECG s.s.em were integrated into lightweight clothing and equipped with wireles. trans.is.ion for s.gnal *** s.nchronous.acquis.tion of I–III,aVR,aVL,aVF,and V4 lead data,the multilead ECG s.ns.ng s.s.em was.s.itable for various.s.enarios.s.ch as.exercis.,res.,and s.eep,with extremely high s.gnal-to-nois. ratios.

关键词： Multilead electrocardiogram Dry electrodes Wearable electronics Wireles. trans.is.ion

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s.paration of La(Ⅲ),Ce(Ⅳ)and Ca(Ⅱ)from bas.naes.te us.ng acidic phos.honic chitos.n and rotating dis. membrane

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Journal of Rare Earths 2024年第5期42卷 995-1000,I0007页

作者： Dandan lu Wenhui Li Linlin Fan Yunren Qiu s.hool of Chemis.ry and Chemical Engineering Central South UniversityChangsha410083China

The s.paration of rare earths.is.difficult due to their s.milar properties.and the complex characteris.ics.of as.ociated vein o ***-ultrafiltration(CUF)and s.ear induced o rderly dis.ociation coupling with ultrafiltration(s.ODUF)were us.d to s.parate metal ions.M,M=La(Ⅲ),Ce(Ⅳ)and Ca(Ⅱ))from s.mulated bas.naes.te leaching s.lution us.ng acidic phos.honic chitos.n(aPCs.and rotating dis. *** of s.multaneous.removal of metallic ions.was.inves.igated by CUF,and s.itable conditions.were obtained for C/M 10.0(mas. ratio of complexant to metal ions.and pH *** s.ear s.abilities.of aPCs.M complexes.were explored at different pH values.and the res.lts.s.ow that the complexes.can dis.ociate at a certain rotational s.eed,the critical *** critical s.hear rates.of aPCs.La,aPCs.Ce and aPCs.Ca complexes.at pH 5.0 were calculated as.1.42×10^(5).1.69×10^(5) and 9.75×10^(4) s.(-1),*** order of complexes.s.ear s.ability is.aPCs.Ca aPCs.Las.lective s.paration of M and regeneration of aPCs.were achieved by s.ODUF in the light of the difference of aPCs. complexes.s.ear *** s.paration coefficients.La/Ce andβCa/La reach 31.2 and 53.9,res.ectively.

关键词： Bas.naes.te Rare earths Complexation-ultrafiltration Acidic phos.honic chitos.n Rotating dis. membrane

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s.ructural Engineering of Hierarchical Magnetic/Carbon Nanocompos.tes.via In s.tu Growth for High-Efficient Electromagnetic Wave Abs.rption

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Nano-Micro Letters 2024年第9期16卷 262-278页

作者： Xianyuan Liu Jinman Zhou Ying Xue Xianyong lu Key Laboratory of Bio‑Ins.ired s.art Interfacial s.ience and Technology of Minis.ry of Education School of ChemistryBeihang UniversityBeijing 100191People’s Republic of China

Materials.exhibiting high-performance electromagnetic wave abs.rption have garnered cons.derable s.ientific and technological attention,yet encounter s.gnificant *** new materials.and innovative s.ructural des.gn concepts.is.crucial for expanding the application field of electromagnetic wave ***,hierarchical s.ructure engineering has.emerged as.a promis.ng approach to enhance the phys.cal and chemical properties.of materials.providing immens. potential for creating vers.tile electromagnetic wave abs.rption ***,an exceptional multi-dimens.onal hierarchical s.ructure was.meticulous.y devis.d,unleas.ing the full microwave attenuation capabilities.through in s.tu growth,s.lfreduction,and multi-heterogeneous.interface *** hierarchical s.ructure features.a three-dimens.onal carbon framework,where magnetic nanoparticles.grow in s.tu on the carbon s.eleton,creating a necklace-like ***,magnetic nanos.eets.as.emble within this.*** impedance matching was.achieved by precis.ly adjus.ing component proportions.and intelligent integration of divers. interfaces.bols.ered dielectric *** obtain Fe_(3)O_(4)-Fe nanoparticles.carbon nanofibers.Al-Fe_(3)O_(4)-Fe nanos.eets.compos.tes.demons.rated outs.anding performance with a minimum reflection los.(RLmin)value of−59.3 dB and an effective abs.rption bandwidth(RL≤−10 dB)extending up to 5.6 GHz at 2.2 *** notable accomplis.ments.offer fres. ins.ghts.into the precis.on des.gn of high-efficient electromagnetic wave abs.rption materials.

关键词： Electromagnetic wave abs.rption Hierarchical s.ructure In s.tu growth s.lf-reduction

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