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Summer extreme precipitation patterns and synoptic-scale circulation precursors over the Tibetan Plateau

Science China Earth Sciences 2024年第5期67卷 1625-1638页

作者： Zhiyuan DING Yao ha Zhong ZHONG College of Meteorology and Oceanography National University of Defense TechnologyChangsha 410073China key Laboratory for Virtual Geographic Environment School of Geography ScienceNanjing Normal UniversityNanjing 210023China Jiangsu Collaborative Innovation Center for Climate Change School of Atmospheric SciencesNanjing UniversityNanjing 210023China

In the context of global warming,the extreme summer precipitation over the Tibetan Plateau(TP)has changed *** this study,the summer(June–August)extreme precipitation on the TP was classified into three spatial types by applying the k-means clustering method to the Third Pole Region long time-series high-resolution(1/30°)precipitation dataset(TPHi Pr,1979–2020).The characteristics of the circulation anomalies and precursors corresponding to the extreme precipitation on the TP in summer during 1979–2020 were *** results showed that the summer extreme precipitation of the TP can be categorized into northwestern(NW),southeastern(SE),and southern Himalayan(HS)types based on extreme precipitation *** NW and SE types are mainly influenced by anomalous signals in the mid-to-high latitude regions upstream of them,whereas the HS type is controlled by the localized subtropical anomalous *** the 8th day before the onset of the NW type,an anomalous cyclone was observed in the western Atlantic Ocean(60°W,50°N),which triggered the west-to-east quasi-latitudinal propagation of Rossby *** the onset day of the NW type,the upper troposphere showed positive-negative-positive geopotential height anomalies along the latitudinal 40°N from the Caspian Sea,the western part of Xinjiang,to the northeastern *** entered from the Arabian Sea along the southeastern edge of the anomalous cyclone on the southwestern TP and converged in the northwestern *** to the NW type,the precursors of the SE type appeared at higher latitudes and were more *** the 8th day before the onset of the SE type,an anomalous cyclone occurred near Greenland(60°W,70°N)and excited Rossby waves propagating *** the onset day of the SE type,the upper troposphere showed negative-positive-negative geopotential height anomalies across Eurasia from the Ural Mountains and the Iranian Plateau to the northern TP in the northwest-southeast directi

关键词： Tibetan Plateau Summer extreme precipitation Atmospheric circulation anomaly Precursor Teleconnection wave train

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RUFY4 deletion prevents pathological bone loss by blocking endo-lysosomal trafficking of osteoclasts

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Bone Research 2024年第2期12卷 407-420页

作者： Minhee kim Jin Hee Park Miyeon Go Nawon Lee Jeongin Seo hana Lee Doyong kim Hyunil ha Taesoo kim Myeong Seon Jeong Suree kim Taesoo kim han Sung kim Dongmin kang Hyunbo Shim Soo Young Lee Department of Life Science Ewha Womans UniversitySeoul 03760South Korea The Research Center for Cellular Homeostasis Ewha Womans UniversitySeoul 03760South Korea Department of Biomedical Engineering Yonsei UniversityWonju 26493South Korea kM Convergence Research Division Korea Institute of Oriental MedicineDaejeon 34054South Korea Chuncheon Center Korea Basic Science InstituteChuncheon 24341South Korea Fluorescence Core Imaging Center and Bioimaging Data Curation Center Ewha Womans UniversitySeoul 03760South Korea Multitasking Macrophage Research Center Ewha Womans UniversitySeoul 03760South Korea

Mature osteoclasts degrade bone matrix by exocytosis of active proteases from secretory lysosomes through a ruffled ***,the molecular mechanisms underlying lysosomal trafficking and secretion in osteoclasts remain largely ***,we show with GeneChip analysis that RUN and FYVE domain-containing protein 4(RUFY4)is strongly upregulated during *** lacking Rufy4 exhibited a high trabecular bone mass phenotype with abnormalities in osteoclast function in ***,deleting Rufy4 did not affect osteoclast differentiation,but inhibited bone-resorbing activity due to disruption in the acidic maturation of secondary lysosomes,their trafficking to the membrane,and their secretion of cathepsin k into the extracellular ***,RUFY4 promotes late endosome-lysosome fusion by acting as an adaptor protein between Rab7 on late endosomes and LAMP2 on primary ***,Rufy4-deficient mice were highly protected from lipopolysaccharide-and ovariectomy-induced bone ***,RUFY4 plays as a new regulator in osteoclast activity by mediating endo-lysosomal trafficking and have a potential to be specific target for therapies against bone-loss diseases such as osteoporosis.

关键词： osteoclast inhibited traffic

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青藏高原重要交通国道路侧土壤重金属分布特征及生态风险评价

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环境科学 2024年第8期45卷 4825-4836页

作者：南维鸽董治宝薛亮张智哈延庆邵天杰陕西师范大学地理科学与旅游学院西安710119

为了阐明交通对青藏高原敏感脆弱生态系统和主要生态安全屏障功能的影响,在G214、G213、G345、G109、G316和G317等国道部分路段,采集路边0~25 m范围内土壤样品,分析6种土壤重金属含量及分布特征,运用单因子污染指数法(P_(i))、内梅罗综... 详细信息

为了阐明交通对青藏高原敏感脆弱生态系统和主要生态安全屏障功能的影响,在G214、G213、G345、G109、G316和G317等国道部分路段,采集路边0~25 m范围内土壤样品,分析6种土壤重金属含量及分布特征,运用单因子污染指数法(P_(i))、内梅罗综合指数法(P_N)及潜在生态风险指数法(RI)对路侧土壤重金属的污染程度及潜在生态风险进行综合评价.结果表明,青藏高原重要交通国道路侧土壤重金属ω(As)、ω(Cd)、ω(Hg)、ω(Ni)、ω(Pb)和ω(Zn)分别介于5.65~176.00、0.04~0.27、0.01~0.14、9.52~113.00、9.16~54.50和24.70~109.00 mg·k^(-1),呈高度变异,部分采样路段存在As、Cd和Hg元素高于当地土壤背景值.路侧土壤重金属单因子污染指数大小为:P_(i)(As)>P_(i)(Hg)>P_(i)(Cd)>P_(i)(Pb)>P_(i)(Ni)>P_(i)(Zn),内梅罗综合污染指数在0.41~9.20,平均值为1.53,属于清洁或轻度污染,局部处于中度或重度污染.研究路段综合潜在生态风险指数平均值为106.2,土壤总体处于无污染和轻度污染,仅有两个路段的土壤重金属富集达到中等及强度生态危害,其G213a土壤综合潜在风险指数显示为中度至重度生态危害,主要受到Hg、As和Cd的影响,G317土壤综合潜在风险指数显示为轻度至中度生态危害,主要受到Hg和Cd的影响.青藏高原路侧土壤重金属含量与路侧距离及土壤深度没有显著相关性,与年均气温呈显著正相关(P<0.05).青藏高原道路建设人为活动剧烈、交通流量较大的区域有土壤重金属富集趋势.

关键词：青藏高原道路交通土壤重金属路侧分布特征生态风险评价

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Antibacterial ha-coatings on bioresorbable Mg alloy

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Journal of Magnesium and Alloys 2024年第5期12卷 1965-1985页

作者： k.V.Nadaraia D.V.Mashtalyar M.A.Piatkova A.I.Pleshkova I.M.Imshinetskiy M.S.Gerasimenko E.A.Belov V.V.kumeiko D.N.kozyrev k.A.Fomenko V.V.Mostovaya B.R.Torpanov A.R.Biktimirov I.S.Osmushko S.L.Sinebryukhov S.V.Gnedenkov Institute of Chemistry FEB RAS 159 Pr.100-letiya VladivostokaVladivostok 690022Russia Far Eastern Federal University 10 Ajax BayRussky IslandVladivostok 690922Russia A.V.Zhirmunsky National Scientific Center of Marine Biology FEB RAS 17 St.PalchevskogoVladivostok 690041Russia Regional Clinical Dermatovenerological Dispensary 18 V St.GamarnikaVladivostok 690033Russia NMIC“Treatment and Rehabilitation Center” 3 Ivankovskoe highwayMoscow 125367Russia

In this study,a calcium-phosphate coating was formed on a Mg-Mn-Ce alloy by the plasma electrolytic oxidation(PEO).The antibiotic vancomycin,widely used in the treatment of infections caused by Staphylococcus aureus(***),was impregnated into the *** with vancomycin showed high bactericidal activity against *** mechanical and electrochemical properties of the formed coatings were studied,as well as in vitro cytotoxicity tests and in vivo tests on mature male rats were *** to SEM,EDS,XRD and XPS data,coatings had a developed morphology and contained hydroxyapatite,which indicates high *** analysis of roughness of coatings without and with vancomycin did not reveal any differences,confirming the high roughness of the *** electrochemical tests,an increase in corrosion resistance by more than two times after the application of PEO coatings was *** to the results of an in vivo study,after 28 days of the implantation of samples with calcium phosphate PEO coating and vancomycin,no signs of inflammation were observed,while an inflammatory reaction developed in the area of implantation of bare alloy,followed by *** release tests from the coatings show a sharp decrease in the concentration of the released antibiotic on day 7 and then a gradual decrease until day *** the experiment,no significant deviations in the condition and behavior of the animals were observed;clinical tests did not reveal a systemic toxic reaction.

关键词： Bioactive coatings Biocompatibility Mg alloy Plasma electrolytic oxidation Hydroxyapatite Vancomycin

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Planar dual-polarized millimeter-wave shared-aperture array antenna with high band isolation

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Frontiers of Information Technology & Electronic Engineering 2022年第10期23卷 1568-1578页

作者： Yuyan CAO Zijun GUO Zhangcheng ha State key Lab of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China Frontiers Science Center for Mobile Information Communication and Security Southeast UniversityNanjing 210096China Purple Mountain Laboratories Nanjing 211111

A planar millimeter-wave shared-aperture array antenna is proposed and designed in this *** composing the substrate integrated waveguide(SIW)and the stripline,the k-band antenna is embedded inside the ka-band antenna to achieve a smaller size and a low profile by sharing an *** ka-band antenna radiates through the parallel slot pairs on the surface of the SIW cavities with horizontal polar‐ization,while the k-band antenna radiates through the butterfly-shaped slots with vertical polarization,which are also designed on the *** the two array antennas can radiate by sharing a common ap‐erture with high *** verify this idea,a proto‐type of an 8×8 shared-aperture array antenna has been designed with center frequencies of 19 and 30 GHz and fabricated using multilayer printed circuit board(PCB)technology.

关键词： antenna millimeter polarization

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Optimal Operation of Energy Hub Based Micro-energy Network with Integration of Renewables and Energy Storages

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Journal of Modern Power Systems and Clean Energy 2022年第1期10卷 100-108页

作者： Thanhtung ha Ying Xue kaidong Lin Yongjun Zhang Vu Van Thang Thanhha Nguyen Department of Electric Power Systems Thai Nguyen University of Technology(TNUT)Thai NguyenVietnam University of Birmingham BirminghamU.K School of Electric Power South China University of TechnologyGuangzhouChina Thai Nguyen University Thai NguyenVietnam

This study proposes an optimized model of a micro-energy network(MEN)that includes electricity and natural gas with integrated solar,wind,and energy storage systems(ESSs).The proposed model is based on energy hubs(EHs)and it aims to minimize operation costs and greenhouse *** research is motivated by the increasing use of renewable energies and ESSs for secure energy supply while reducing operation costs and environment effects.A general algebraic modeling system(GAMS)is used to solve the optimal operation problem in the *** results demonstrate that an optimal MEN formed by multiple EHs can provide appropriate and flexible responses to fluctuations in electricity prices and adjustments between time periods and *** also yields significant reductions in operation costs and *** proposed model can contribute to future research by providing a more efficient network model(as compared with the traditional electricity supply system)to scale down the environmental and economic impacts of electricity storage and supply systems on MEN operation.

关键词： Micro-energy network(MEN) natural gas price electricity price energy hub(EH) renewables energy storage optimal operation

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Flat-footed Females and Missing Males:A New Genus and Species of Pleciofungivoridae(Diptera:Bibionomorpha)Represents the First Record of the Family from Mid-Cretaceous kachin Amber

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Acta Geologica Sinica(English Edition) 2024年第3期98卷 541-547页

作者： ZhaNG Qingqing Wiesław kRZEMINSkI Jan SEVCIk Vladimir BLAGODEROV Agnieszka SOSZYNSkA kornelia SkIBINSkA Yunnan key Laboratory for Palaeobiology Institute of PalaeontologyYunnan UniversityKunming 650500China MEC International Joint Laboratory for Palaeobiology and Palaeoenvironment Yunnan UniversityKunming 650500China State key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PaleoenvironmentChinese Academy of SciencesNanjing 210008China Institute of Systematics and Evolution of Animals Polish Academy of Sciences52551 KrakówPoland University of Ostrava Faculty of ScienceDepartment of Biology and EcologyChittussiho 10CZ-71000 OstravaCzech Republic National Museums Scotland EdinburghUK Natural History Museum LondonUK University of Lodz Faculty of Biology and Environmental ProtectionDepartment of Invertebrate Zoology and HydrobiologyBanacha 12/1690-237ŁódźPoland

A new genus and species,Cretopleciofungivora simpsoni *** ***.,from the extinct family Pleciofungivoridae(Diptera:Bibionomorpha),is discovered in mid-Cretaceous kachin ***,this family was known only from imprints in sedimentary rocks of the Jurassic and the Lower *** of a representative of Pleciofungivoridae in kachin amber confirms the presence of the family in the Upper *** new species has a unique structure of fore tarsus,with lobed and extended tarsal segments Ⅱ to Ⅳ,a feature hitherto known only in a few species of extant *** not particularly rare,the new species is currently known only from female *** reasons for this phenomenon,very unusual in Sciaroidea,are briefly discussed,including parthenogenesis as a potentially plausible hypothesis.

关键词： fungus gnats Sciaroidea Upper Cretaceous Burmese amber swollen tarsomeres

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Protection against Chemical Warfare Agents and Biological Threats Using Metal−Organic Frameworks as Active Layers

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Accounts of Materials Research 2023年第2期4卷 168-179页

作者： kaikai Ma Yuk ha Cheung kent O.kirlikovali Xiaoliang Wang Timur Islamoglu John H.Xin Omar k.Farha International Institute for Nanotechnology Institute for Sustainability and Energy at Northwesternand Department of ChemistryNorthwestern UniversityEvanstonIllinois 60208United States Research Centre for Smart Wearable Technology School of Fashion and TextilesThe Hong Kong Polytechnic UniversityKowloon 999077 Hong Kong SARP.R.China

The SARS-CoV-2 pandemic outbreak and the unfortunate misuse of toxic chemical warfare agents(CWAs)highlight the importance of developing functional materials to protect against these chemical and pathogen ***−organic frameworks(MOFs),which comprise a tunable class of crystalline porous materials built from inorganic nodes and organic linkers,have emerged as a class of heterogeneous catalysts capable of rapid detoxification of multiple classes of these harmful chemical or biological *** particular,zirconium-based MOFs(Zr-MOFs)feature Lewis acidic nodes that serve as active sites for a wide range of catalytic reactions,including the hydrolysis of organophosphorus nerve agents within seconds in basic aqueous *** addition,postsynthetic modification of Zr-MOFs enables the release of active species capable of reacting with and deactivating harmful *** this impressive performance,utilizing Zr-MOFs in powder form is not practical for application in masks or protective *** address this challenge,our team sought to develop MOF/fiber composite systems that could be adapted for use under realistic operating conditions to protect civilians,military personnel,and first responders from harmful pathogens and chemical warfare *** the last several years,our group has designed and fabricated reactive and biocidal MOF/fiber composites that effectively capture and deactivate these toxic *** this Account,we describe the evolution of these porous and reactive MOF/fiber composites and focus on key design challenges and ***,we devised a scalable method for the integration of Zr-MOFs onto textile substrates using aqueous precursor solutions and without using pretreated textiles,highlighting the potential scalability of this *** beyond standard textiles,we also developed a microbial synthesis strategy to prepare hierarchically porous MOF/bacterial cellulose nanofiber composite sponges that can both captu

关键词： composites protective porous

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Unrecognized diversity in New Guinean crayfish species (Decapoda, Parastacidae): The evidence from molecular data

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Integrative Zoology 2016年第6期11卷 457-468页

作者： Martin BLÁha Jiří PATOkA Pavel kOZÁk Antonín kOUBA Faculty of Fisheries and Protection of Waters South Bohemian Research Center of Aquaculture and Biodiversity of HydrocenosesUniversity of South Bohemia inČeskéBudějoviceVodňanyCzech Republic Department of Zoology and Fisheries Faculty of AgrobiologyFood and Natural ResourcesCzech University of Life Sciences PraguePrahaCzech Republic

The phylogenetic relationships among imported ornamental crayfish belonging to the genus Cherax were inferred from a combined dataset of 3 mitochondrial genes(COI,16S and 12S)and by comparison with available GenBank sequences of 14 Cherax ***,the concordance of previously described species obtained from a wholesaler(Cherax boesemani,*** and ***)with available GenBank sequences was verified based on COI with special respect to comparison with sequences assigned as Cherax ***cently described species ***,*** and *** belong to the northern group of Cherax *** and analysis with other GenBank COI sequences show previously unreported diversity of New Guinean species,suggesting 5 putative new ***,species assigned to the subgenus Astaconephrops do not form a monophyletic clade;this subgenus should be reappraised relative to the purported typical morphological characteristic of the uncalcified patch on male *** importation of crayfish underscores the importance of accurate species *** of basic molecular methods is a necessary requisite for documenting occurrence,abundance and population trends of target ***,it helps to support eventual conservation decision-making by stakeholders.

关键词： Cherax cytochrome c oxidase DNA barcoding mitochondrial DNA ornamental crayfish

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The acceleration of a high-charge electron bunch to 10 GeV in a 10-cm nanoparticle-assisted wakefield accelerator

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Matter and Radiation at Extremes 2024年第1期9卷 15-24页

作者： Constantin Aniculaesei Thanh ha Samuel Yoffe Lance Labun Stephen Milton Edward McCary Michael M.Spinks Hernan J.Quevedo Ou Z.Labun Ritwik Sain Andrea hannasch Rafal Zgadzaj Isabella Pagano Jose A.Franco-Altamirano Martin L.Ringuette Erhart Gaul Scott V.Luedtke Ganesh Tiwari Bernhard Ersfeld Enrico Brunetti hartmut Ruhl Todd Ditmire Sandra Bruce Michael E.Donovan Michael C.Downer Dino A.Jaroszynski Bjorn Manuel Hegelich University of Texas at Austin AustinTexas 78712USA SUPA Department of Physics University of StrathclydeGlasgowScotland G4 ONGUnited Kingdom Tau Systems Inc.AustinTexas 78701USA Lawrence Livermore National Laboratory LivermoreCalifornia 94550USA Los Alamos National Laboratory Los AlamosNew Mexico 87545USA Brookhaven National Laboratory UptonNew York 11973USA Ludwig-Maximilians-Universität MunichGermany

An intense laser pulse focused onto a plasma can excite nonlinear plasma *** appropriate conditions,electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic *** scheme is called a laser wakefield *** this work,we present results from a laser wakefield acceleration experiment using a petawatt-class laser to excite the wakefields as well as nanoparticles to assist the injection of electrons into the accelerating phase of the *** find that a 10-cm-long,nanoparticle-assisted laser wakefield accelerator can generate 340 pC,10±1.86 GeV electron bunches with a 3.4 GeV rms convolved energy spread and a 0.9 mrad rms *** can also produce bunches with lower energies in the 4–6 GeV range.

关键词： acceleration nanoparticle charge

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