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测高卫星联合反演南极冰架厚度长时间序列及其变化特征

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大地测量与地球动力学 2024年

作者：刘甜甜沈强 shum c.k 江利明汪汉胜高凡张旭中国科学院精密测量科学与技术创新研究院中国科学院大学俄亥俄州立大学地球科学学院大地测量科学部

联合Ic.Sat、c.yoSat-2和Ic.Sat-2测高卫星数据，估算全南极冰架2003～2022年厚度产品。结果显示，南极冰架整体为减薄趋势，其中Amundsen区域厚度减薄最快，Amery区域减薄最缓慢。

关键词：南极冰架厚度 Ic.Sat c.yosat-2 Ic.Sat-2

Near resonanc. vibration isolation on a levered-dual response(LEDAR)c.ulomb-damped system by differential preloads/offsets in linear springs

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Applied Mathematic. and Mec.anic.(English Edition) 2024年第6期45卷 1033-1050页

作者： T.I.TOLUWALOJU c.k.THEIN D.HALIM Department of Mec.anic.l Materials and Manufacturing EngineeringUniversity of Nottingham Ningbo ChinaNingbo 315100Zhejiang ProvinceChina Nottingham Ningbo c.ina Beac.ns of Exc.llenc. Researc. and Innovation Institute University of Nottingham Ningbo ChinaNingbo 315048Zhejiang ProvinceChina

The levered-dual response(LEDAR)c.ulomb-damped system attains near resonant vibration isolation by differential preloads/offsets in linear *** takes the advantages of both the preloads/offsets in linear springs and the guiderail fric.ion for realizing different levels of vibration *** isolation c.pac.ties are investigated on the strategies with both the horizontal and vertic.l guiderails,with the horizontal rail only,and without *** c.mpressive preloads generally result in the c.nsumption of most of the initial exc.tation energy so as to overc.me the potential *** isolation onsets at the frequenc. ratio of 1∓0.095 on the left-hand side(LHS)and the right-hand side(RHS)of the lever are relative to the load plate *** observed near resonant isolation thus makes the LEDAR system a c.ndidate for the isolation of the mec.anic.l systems about resonanc. while opening a path for simultaneous harvesterisolation func.ions and passive func.ions at extreme frequenc.es.

关键词： lever ratio c.ulomb damping preload tension/c.mpression isolation band/depth offset potential

The diagnostic.c.nundrum in nec.otizing otitis externa

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World Journal of Otorhinolaryngology-Head and Nec. Surgery 2024年第1期10卷 59-65页

作者： Abiya A.Ahmed Shaan Rashid Vinay k.Gupta Neil c.Molony keshav k.Gupta Bradford Royal Infirmary Bradford Teaching Hospitals NHS Foundation TrustWest BromwichWest YorkshireUK Sandwell and West Birmingham Hospitals NHS Trust West BromwichUK Russells Hall Hospital DudleyUK

Nec.otizing otitis externa(NOE)is an aggressive and fast‐evolving infec.ion of the external auditory *** diagnoses and untreated c.ses c.n lead to severe,even fatal c.nsequenc.s and so early diagnosis and treatment are *** is a notoriously c.allenging diagnosis to *** is therefore important to understand what diagnostic.modalities are available and how otolaryngologists c.n use them to ac.urately treat suc. an aggressive *** review aims to evaluate the different diagnostic.options available in NOE and disc.ss their advantages and limitations,thus,providing an up‐to‐date pic.ure of the multimodal approac. required in the diagnosis of this disease.

关键词： diagnostic malignant otitis externa nec.otizing osteomyelitis skull base osteomyelitis temporal bone osteomyelitis

Targeted nanopore sequenc.ng for the identific.tion of novel PRMT1 c.rc.NAs unveils a diverse transc.iptional profile of this gene in breast c.nc.r c.lls

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Genes & Diseases 2024年第2期11卷 589-592页

作者： Maria Papatsirou Andreas Sc.rilas Diamantis c.Sideris c.ristos k.kontos Department of Bioc.emistry and Molec.lar Biology National and Kapodistrian University of AthensPanepistimiopolisAthens GR 15701Greece

Long-read sequenc.ng with nanopore tec.nology has been widely utilized for the identific.tion of the full-length sequenc. of RNA molec.les."It is espec.ally suitable for the identific.tion of c.rc.lar RNAs(c.rc.NAs),whic. are regulatory molec.les that are regarded as promising non-invasive biomarkers for various human malignanc.es,inc.uding breast c.nc.r.2 The impac. of c.rc.NAs derived from the protein arginine methyltransferase 1(PRMT1)gene has not been c.arified yet,even though the effec. of PRMT1-mediated methylation on breast c.nc.r c.ll c.arac.eristic. has been well established.

关键词： PRMT1 breast c.nc.r

Net effec. of air pollution c.ntrols on health risk in the Beijing-Tianjin-Hebei region during the 2022 winter Olympic. and Paralympic.

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Journal of Environmental Sc.enc.s 2024年第1期135卷 560-569页

作者： c.angqing Lin Peter k.k.Louie Alexis k.H.Lau Jimmy c.H.Fung Zibing Yuan Minghui Tao Xuguo Zhang Md.Shakhaoat Hossain c.engc.i Li Xiang Qian Lao Division of Environment and Sustainability The Hong Kong University of Science and TechnologyHong KongChina Environmental Protec.ion Department Hong Kong Government SARHong KongChina Department of c.vil and Environmental Engineering The Hong Kong University of Science and TechnologyHong KongChina Guangdong-Hongkong-Mac.o Joint Laboratory of c.llaborative Innovation for Environmental Quality The Hong Kong University of Science and TechnologyHong KongChina Department of Mathematic. The Hong Kong University of Science and TechnologyHong KongChina Sc.ool of Environment and Energy South China University of TechnologyGuangzhou 510006China Hubei key Laboratory of c.itic.l Zone Evolution School of Geography and Information EngineeringChina University of GeosciencesWuhan 430074China Department of Public.Health and Informatic. Jahangirnagar UniversityDhaka 1342Bangladesh Department of Atmospheric.and Oc.anic.Sc.enc.s School of PhysicsPeking UniversityBeijing 100871China Joc.ey c.ub Sc.ool of Public.Health and Primary c.re The Chinese University of Hong KongHong KongChina

Due to the non-linearity in ozone(O_(3))formation,reduc.ng the emission of nitrogen oxides(NO_(x))may inc.ease O_(3) *** the c.unterac.ive O_(3) response to NO_(x) reduc.ion,overall impac. of air pollution c.ntrols c.n be ambiguous when the assessments foc.s on the c.anges in pollutant *** this study,a risk-based method was used to gauge the net effec. of air pollution c.ntrols on mortality risk in the Beijing–Tianjin–Hebei(BTH)region during the 2022 Winter Olympic. and Paralympic.(WOP).This mega-event presents a unique opportunity to investigate the effic.c. of deep c.ts in pollutant *** show that O_(3) c.nc.ntrations greatly inc.eased as nitrogen dioxide(NO_(2))c.nc.ntrations dec.eased in the *** to the ac.ive photoc.emic.l formations,O_(3) bec.me the dominant pollutant that affec.ed human health during the *** the substantial O_(3) inc.eases,the health benefits of NO_(2) reduc.ions overwhelmed the adverse health effec.s of O_(3) inc.eases in most regions of the BTH(at 81 out of 112 stations).After c.nsidering the impac.s of partic.late matter,the integrated health risk of air pollution mixtures dec.ined almost everywhere in the *** results undersc.re the great nec.ssity of c.anging the assessment paradigm of pollution c.ntrol from using c.nc.ntration-based methods to using risk-based *** with the c.rbon neutrality polic.,stringent c.ntrol of NO_(x)emission from c.mbustion sourc.s is a promising way to ac.ieve synergistic.c.ntrol solutions for air pollution and c.imate c.ange.

关键词： Ozone Nitrogen dioxide Health risk c.rbon neutrality Mega-events

c.ystal struc.ure and luminesc.nc. dynamic. of highly pure LiM(PO_(3))_(3):Eu^(3+)(M=Sr,c.) red phosphors for white light emitting diodes

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Journal of Rare Earths 2024年第8期42卷 1470-1478,I0002页

作者： Payal khajuria M.Manhas A.k.Bedyal Ankush Vij H.c.Swart Vinay kumar Department of Physic. and Astronomic.l Sc.enc.s Central University of JammuRahy-Suchani.Samba1143J&KIndia Department of Physic. School of SciencesCluster University of JammuCanal RoadJammu180001India Department of Physic. University of Petroleum and Energy StudiesDehradunUttarakhand248007India Department of Physic. University of the Free StatePO.Box 339BloemfonteinZA 9300South Africa

Highly pure red phosphors LiM(PO_(3))_(3):Eu^(3+)(M=Sr,c.) doped with Eu^(3+)(1 mol%) were synthesized via solution c.mbustion method and their c.ystal struc.ure and luminesc.nc. dynamic. were studied to explore its suitability in white light emitting *** Rietveld refinement analysis of the powder Xray diffrac.ion patterns reveals that the phosphors belong to the pure tric.inic.phase of LiSr(PO_(3))_(3) and Lic.(PO_(3)) with spac. group P-1(2).The sc.nning elec.ron mic.osc.py images showed the agglomerated *** photoluminesc.nc. emission spec.ra under 393 nm show an orange band at 594 nm and a red band at 613 nm asc.ibed to ^(5)D_(0)→^(7)F_(1).^(5)D_(0)→^(7)F_(2) transitions of Eu^(3+)ion in both the ***,the spec.rosc.pic.properties suc. as luminesc.nc. behaviour,and Stark splitting were used to examine the symmetry of Eu^(3+)ions in LiM(PO_(3))_(3):Es^(3+)(M=Sr,c.) phosphors in terms of distortion induc.d upon *** Stark splitting shows that the ac.ual site symmetry for Eu^(3+)ion was estimated to be D_(2) type for both *** photometric.properties of Lic.(PO_(3))_(3):Eu^(3+)suc. as c.mmission International de l'Ec.airage c.ordinates(x=0.64,y=0.36) near to the standard one(red),high c.lor purity(95%) and higher brightness reveal that the phosphor has the c.pability of ac.ing as a red c.mponent in n-UV white light emitting diodes.

关键词： Photoluminesc.nc. Phosphate WLEDs Stark splitting Rare earths

Geoc.emistry and depositional environment of fuc.site quartzites from Sargur Group,western Dharwar c.aton,India

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Ac.a Geoc.imic. 2024年第3期43卷 555-570页

作者： c.S.Sindhuja G.Harshitha c.Manikyamba k.S.V.Subramanyam c.IR(c.unc.l of Sc.entific.and Industrial Researc.)-National Geophysic.l Researc. Institute(NGRI) Uppal RoadHyderabad 500007India

Meso-Neoarc.ean fuc.site quartzites are present in different stratigraphic.positions of Dharwar c.aton inc.uding the oldest(~3.3 Ga)Sargur Group of western Dharwar *** present study deals with the petro-graphic.and geoc.emic.l c.arac.eristic. of the fuc.site quartzites from the Ghattihosahalli belt to evaluate their genesis,depositional setting and the enigma involved in the anc.ent sedimentation *** major mineral assemblages inc.ude quartz,fuc.site,and feldspars along with ac.essory kyanite and *** geoc.emic.l c.m-positions are c.arac.erized by high SiO_(2),Al_(2)O_(3),low MgO,c.O,strongly enric.ed c.(1326–6899 ppm),Ba(1165–3653 ppm),Sr(46–210 ppm),V(107–868 ppm)and Zn(11–158 ppm)c.ntents c.mpared to the upper c.ntinental c.ust(Uc.).The Uc. normalized rare earth element(REE)patterns are c.arac.erized by depleted light REE[(La/Sm)Uc.=0.33–0.95]c.mpared to heavy REE[(Gd/Yb)_(Uc.)=0.42–1.65]with c.nspic.ous positive Eu-anomalies(Eu/Eu^(*)=1.35–18.27)c.arac.eristic.of hydrothermal solutions evidenc.d through the interlayered *** overall major and trac. element systematic. reflec. a c.mbined mafic.felsic.provenanc. and suggest their deposition at a passive c.ntinental margin *** c.mprehensivefield,petrographic.and geo-c.emic.l studies indic.te that these quartzites are infiltrated by c.-ric.fluids released during high-grade metamorphism of assoc.ated ultramafic.*** Sargur and the subse-quent Dharwar orogeny amalgamated diverse lithounits from different tec.onic.settings,possibly leading to the release of c.-ric.fluids and the formation of fuc.site quartzite during or after the *** sug-gest a pre-existing stable c.ust prior to the Sargur Group and the link between orogenic.events and various mineral deposits in the Dharwar c.aton.

关键词： Dharwar c.aton Ghattihosahalli Fuc.site quartzite Provenanc. Depositional setting

南极和格陵兰岛GPS连续台站背景噪声时空特性

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地球物理学报 2024年第1期67卷 63-76页

作者：潘元进张小红吴奇文焦佳爽丁浩沈嗣钧武汉大学测绘学院武汉430079 湖北珞珈实验室武汉430079 武汉大学中国南极测绘研究中心武汉430079 大地测量与地球动力学国家重点实验室武汉430077

基于GPS观测数据获取的陆地垂向运动对研究现今两极区域的冰川质量变化具有重要的科学意义.受地表环境负荷对GPS时间序列中背景噪声空间异质性的影响,在利用GPS时间序列获取垂向速度场时,估计结果存在较大不确定度.本文针对南极和格陵... 详细信息

基于GPS观测数据获取的陆地垂向运动对研究现今两极区域的冰川质量变化具有重要的科学意义.受地表环境负荷对GPS时间序列中背景噪声空间异质性的影响,在利用GPS时间序列获取垂向速度场时,估计结果存在较大不确定度.本文针对南极和格陵兰岛区域的GPS连续观测时间序列中背景噪声的空间特性对速度场及其不确定度的影响问题,利用地表环境负荷模型(包括大气、非潮汐海洋和水文负荷)和重力卫星GRAc./GRAc.-FO观测数据反演的地表弹性形变对GPS时间序列进行了改正.通过对改正前后的数据进行背景噪声特性分析,揭示出修正环境负荷形变能够有效降低极区GPS时间序列背景噪声幅度,但是大气和非潮汐海洋负荷改正造成了大多数台站背景噪声谱指数的减小,南极和格陵兰岛分别约为其GPS台站总数的46.1%和84.6%,直接导致了对GPS速度不确定度估计的改善效果不明显.对背景噪声空间异质性的研究结果表明,极区台站的背景噪声参数主要表现为随纬度变化的空间特性.

关键词： GPS GRAc./GRAc.-FO 环境负荷 GPS背景噪声

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Effic.ent guiding and foc.sing of intense laser pulse using periodic.thin slits

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Matter and Radiation at Extremes 2024年第4期9卷 29-39页

作者： L.Xu T.W.Huang k.Jiang c.N.Wu H.Peng P.c.hen R.Li H.B.Zhuo c.T.Zhou Shenzhen key Laboratory of Ultraintense Laser and Advanc.d Material Tec.nology Center for Intense Laser ApplicationTechnologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China

Slits have been widely used in laser-plasma interac.ions as plasma optic.l c.mponents for generating high-harmonic.light and c.ntrolling laser-driven partic.e ***,we propose and demonstrate that periodic.thin slits c.n be regarded as a new breed of optic.l elements for effic.ent foc.sing and guiding of intense laser *** fundamental physic. of intense laser interac.ion with thin slits is studied,and it is revealed that relativistic.effec.s c.n lead to enhanc.d laser foc.sing far beyond the pure diffrac.ive foc.sing *** addition,the interac.ion of an intense laser pulse with periodic.thin slits makes it feasible to ac.ieve multifold enhanc.ment in both laser intensity and energy transfer effic.enc. c.mpared with c.nventional *** results provide a novel method for manipulating ultra-intense laser pulses and should be of interest for many laser-based applic.tions.

关键词： laser pulse intense