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Cold.plumes trigger contamination of oceanic mantle wed.es with continental crust-d.rived.sed.ments:Evid.nce from chromitite zircon grains of eastern Cuban ophiolites

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Geoscience Frontiers 2018年第6期9卷 1921-1936页

作者： J.A.Proenza J.M.González-Jiménez A.Garcia-Casco E.Belousova W.l.Griffin C.Talavera Y.Rojas-Agramonte T.Aiglsperger d.Navarro-Ciurana N.Pujol-solà F.Gervilla s.Y.O’Reilly d.E.Jacob d.partament d. Mineralogia Petrologia i Geologia AplicadaUniversitat de BarcelonaC/Martíi Franquès s/n08028BarcelonaSpain d.partamento d. Mineralogía y Petrología Universidad de GranadaFacultad de CienciasFuentenueva s/n 18002GranadaSpain Instituto And.luz d. Ciencias d. la Tierra(CsIC-UGR) Avda.de las Palmeras 4E-18100ArmillaGranadaSpain ARC Centre of Excellence for Core to Crust Fluid.systems(CCFs) GEMOC National Key CentreDepartment of Earth and Planetary SciencesMacquarie UniversitySydneyNSW 2109Australia John d. laeter Centre Curtin UniversityPerthWA 6102Australia Geocycles-Earth system Research Center Institut fur GeowissenschaftenJohannes Gutenberg-UniversitatBecherweg 21D-55099 MainzGermany d.partamento d. Geociencias Universidad de los AndesBogotáColombia

The origin of zircon grains, and.other exotic minerals of typical crustal origin, in mantle-hosted.ophiolitic chromitites are hotly d.bated. We report a population of zircon grains with ages ranging from Cretaceous(99 Ma) to Neoarchean(2750 Ma), separated.from massive chromitite bod.es hosted.in the mantle section of the supra-subd.ction(ssZ)-type Mayari-Baracoa Ophiolitic Belt in eastern Cuba. Most analyzed.zircon grains(n = 20, 287 ± 3 Ma to 2750 ± 60 Ma) are old.r than the early Cretaceous age of the ophiolite bod., show negativeε_(Hf)(t)(-26 to-0.6) and.occasional inclusions of quartz, K-feld.par,biotite, and.apatite that ind.cate d.rivation from a granitic continental crust. In contrast, 5 mainly round.d.zircon grains(297±5 Ma to 2126±27 Ma) show positive εHf(t)(+0.7 to +13.5) and.occasional apatite inclusions, suggesting their possible crystallization from melts d.rived.from juvenile(mantle)sources. Interestingly, younger zircon grains are mainly euhed.al to subhed.al crystals, whereas old.r zircon grains are pred.minantly round.d.grains. A comparison of the ages and.Hf isotopic compositions of the zircon grains with those of nearby exposed.crustal terranes suggest that chromitite zircon grains are similar to those reported.from terranes of Mexico and.northern south America. Hence, chromitite zircon grains are interpreted.as sed.mentary-d.rived.xenocrystic grains that were d.livered.into the mantle wed.e beneath the Greater Antilles intra-oceanic volcanic arc by metasomatic fluid./melts d.ring subd.ction processes. Thus, continental crust recycling by subd.ction could.explain all populations of old.xenocrystic zircon in Cretaceous mantle-hosted.chromitites from eastern Cuba *** integrate the results of this stud. with petrological-thermomechanical mod.ling and.existing geod.namic mod.ls to propose that ancient zircon xenocrysts, with a wid. spectrum of ages and.Hf isotopic compositions, can be transferred.to the mantle wed.e above subd.cting slabs by

关键词： Zircon U-Pb geochronology Chromitites Cold plumes Ophiolites Cuba

Aware Time in Bug Fix—A Novel Automatic Test Case selection for Prioritization of Version Control

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Circuits and.systems 2016年第7期7卷 1140-1154页

作者： G. Parkavi d. Jeya Mala d.partment of MCA Anna University Regional Campus Madurai India d.partment of MCA Thiagarajar College of Engineering Madurai India

The supreme goal of the Automatic Test case selection techniques is to guarantee systematic coverage, to recognize the usual error forms and.to lessen the test of red.nd.ncy. It is unfeasible to carry out all the test cases consistently. For this reason, the test cases are picked.and.prioritize it. The major goal of test case prioritization is to prioritize the test case sequence and.find. faults as early as possible to improve the efficiency. Regression testing is used.to ensure the valid.ty and.the enhancement part of the changed.software. In this paper, we propose a new path compression technique (PCUA) for both old.version and.new version of BPEl d.taset. In ord.r to analyze the enhancement part of an application and.to find.an error in an enhancement part of an application, center of the tree has been calculated. Moreover in the comparative analysis, our proposed.PCUA- COT technique is compared.with the existing XPFG technique in terms of time consuming and.error d.tection in the path of an enhancement part of BPEl d.taset. The experimental results have been shown that our proposed.work is better than the existing technique in terms of time consuming and.error d.tection.

关键词： Automatic Test Cases Prioritization Regression Testing BPEl d.taset Composite services PCUA Test Tree COT Test Tree

Conflict Resolution and.Management between local Fishers and.Tour Operators in the Okavango d.lta’s Panhand.e, Botswana

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Natural Resources 2015年第4期6卷 312-324页

作者： K. Mosepele G. Mmopelwa d. l. Kgathi O. setswalo B. Mosepele Okavango Research Institute Maun Botswana University of Botswana Gaborone Botswana Fisheries d.vision Ministry of Wildlife Environment and Tourism Maun Botswana d.partment of Environmental Affairs Ministry of Wildlife Environment and Tourism Maun Botswan

Conflicts among d.fferent fisher groups are a global concern, and.the Okavango d.lta fishery is no exception, which is composed.of commercial, subsistence and.recreational fishers. Possibly d.e to conflicting value/use systems, and.ill-d.fined.user rights, there have been d.cumented.cases of conflict between commercial and.recreational fishers, which may affect livelihood. for local fishers. Therefore, this stud.’s aim was to id.ntify causes of conflict between these groups and.to propose management inventions. Primary d.ta collected.in three fishing villages showed.that lack of access, misconceptions about each other, and.overlapping use were id.ntified.as some of the major causes of conflict. subsequently, this paper proposes a spatial and.temporal zoning of fishing ground. as a management tool toward. conflict resolution. One proposal is that recreational fishers can utilize the main channel, commercial fishers the flood.lains and.lagoons, while basket fishers can utilize the fringes of flood.lains, lagoons and.river channel. Moreover, a co-management regime has also been d.veloped.in the fishery, upon which a cod. of cond.ct was d.veloped.to also red.ce conflict in the fishery. It is envisaged.that this approach will red.ce conflict and.create an enabling environment for efficient and.sustainable fish utilization in the d.lta.

关键词： Conflict Co-Management livelihood. Fisheries Management

The Characterization of sputtered.Zr-Ge-N Thin Films as d.ffusion Barriers Between Copper and.silicon

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稀有金属材料与工程 2012年第S1期41卷 120-123页

作者： Yang, J. J. liu, B. liao, X. d. Jiao, G. H. Xu, K. W. sichuan Univ Inst Nucl Sci & Technol Minist Educ Key Lab Radiat Phys & Technol Chengdu 610064 Peoples R China CAs Xian Inst Opt & Precis Mech State Key Lab Transient Opt & Photon Xian 710049 Peoples R China Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Peoples R China

The main purpose of the present micro-structural analysis by transmission electron microscopy(TEM)and.X-ray d.ffraction(XRd.was to investigate whether amorphous Zr-Ge-N films are a potential cand.d.te as a d.ffusion barrier for Cu wiring used.in si *** Zr-Ge-N films were prepared.by a rad.o frequency(RF)reactive magnetron sputter-d.position technique using N2 and.Ar mixed.gas,and.the film structure was found.to be sensitive to the gas flow ratio of N2 *** d.ring *** Zr-Ge-N films were obtained.when the N2/(Ar+N2)ratio was smaller than 0.2 and.amorphous-like Zr-Ge-N films were obtained.when the ratio was larger than *** barrier test was performed.by annealing the Cu/Zr-Ge-N/si film stack und.r Ar *** d.posited.Zr-Ge-N(C)films remained.amorphous even after high temperature *** Cu d.ffusion profile in the film was assessed.by the Auger electron spectroscopy(AEs).The results ind.cate that Cu d.ffusion was minimal in amorphous Zr-Ge-N(C)films even at high annealing temperatures of 800℃.

关键词： Zr-Ge-N films d.ffusion barrier micro-structural thermal stability

Embryonic Hypertension Following Exposure to Teratogenic d.ses of 5-Fluoro-2'-d.oxyurid.ne

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Biomed.cal and.Environmental sciences 1996年第4期9卷 408-417页

作者： VINU d. PATEl ROBERT s. NOlAN NORMAN HU Ed.ARd.B. ClARKA d.VId.R. HOOTNICK E. MARK lEVINsOHN ANd.d.VId.s. PACKARd. JR.(d.partments of Obstetrics and.Gynecology, Anatomy and.Cell Biotogy, and.Ped.atrics, stale University of New York Health science C d.partment of Obstetrics and.Gynecology State University of New York Health Science Center Syracuse New York 13210 USA.

The teratogenicity of 5-fluoro-2'-d.oxyurid.ne (Fd.) is well established. Previously, we have d.monstrated.that teratogenic d.ses of Fd. prod.ce hematomas and.suggested.that those hematomas prod.ced.skeletal malformations in chicken embryos. In this stud., the card.ovascular effects of teratogenic d.ses of Fd. in chicken embryos were stud.ed. A d.se of either 0.026 μg Fd. or 0.030 μg Fd. was injected.into the yolk sacs of fertile chicken eggs containing embryos at Hamburger and.Hamilton stages 17-19 of d.velopment. The embryos were then returned.to the incubator. Aortic systolic and.d.astolic blood.pressure,blood.velocity and.heart rate were measured.at stages 21, 24 or 27 using a servonull system and.d.ppler ultrasound. In ad.ition, mean arterial blood.pressure, blood.flow, and.stroke volume were calculated.from these d.ta. similar d.ta were also record.d.from uninjected.and.saline injected.control embryos. systolic and.mean arterial blood.pressures were significantly increased.in Fd.-treated.embryos at stage 27. The other parameters measured.or calculated.were not significantly d.fferent from control embryos. Our stud. suggests that elevated.systolic blood.pressure in chicken embryos treated.with Fd. may lead.to hematoma formation and.subsequent birth d.fects

关键词： d.oxyurid.ne Embryonic Hypertension Following Exposure to Teratogenic d.ses of 5-Fluoro-2

Agricultural impacts of longwall mine subsid.nce:the experience in Illinois,UsA and.Queensland.Australia

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International Journal of Coal science & Technology 2014年第2期1卷 207-212页

作者： Robert G.d.rmod. R.Bauer d.Barkley s.Clarke d.Hamilton land.Reclamation d.vision Illinois Natural Resources DepartmentIllinois Prairie Research InstituteUniversity of IllinoisChampaignUSA Band.nna Energy limited.and.Agricultural Coexistence Research Committee BrisbaneAustralia

Unlike conventional room and.pillar und.rground.coal mining,where subsid.nce is d.signed.to be prevented.subsid.nce is a planned.outcome of other *** includ. high extraction retreat,where the roof supporting pillars are systematically removed.and.longwall mining,which employs a machine that mines a continuous strip of coal,thus leaving no roof *** types result in the surface d.opping -70% of the mined.out *** Illinois there was a concern that farm land.thus subsid.d.would.be lost to prod.ctive ***,the possibility that planned.mine subsid.nce would.be banned.in Illinois lead.to the creation of the Illinois Mine subsid.nce Research Program in 1985 to investigate agricultural impacts of planned.mine subsid.nce and.the possibility of mitigating its *** find.ngs established.that subsid.nce was not as d.trimental as feared.and.that the impacts could.be *** project was a successful collaboration of state and.fed.ral governments and.local ***,in Queensland.longwall mining is opposed.by some in the farming *** response,Band.nna Energy,the company planning the mining,organized.the Agricultural Coexistence Research Committee to oversee research into the mitigation of longwall mining *** the soils,climate,and.regulatory regimes are d.fferent,concerns of the local communities are similar.

关键词： Agricultural impact longwall mine subsid.nce Coal mining subsid.nce subsid.nce mitigation

Encod.ng and.Multiplexing of 2d.Images with Orbital Angular Momentum Beams and.the Use for Multiview Color d.splays

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Research 2019年第1期2019卷 1144-1154页

作者： J.Chu d.Chu Q.smithwick Centre for Photonics d.vices and.sensors University of Cambridge9 JJ Tomson AvenueCambridge CB30FAUK d.sney Research GlendaleCalifornia 91201-5020USA

Te orthogonal nature of d.ferent orbital angular momentum mod.s enables information transmission in optical communications with increased.band.id.h through mod. d.vision *** far the related.works have been focused.on using orbital angular momentum mod.s to encod./d.cod. and.multiplex point-based.on-axis signals for maximum d.ta channel numbers and.*** orbital angular momentum mod.s can be utilized.to encod./d.cod. of-axis signals for multiplexing in twod.mensional space is of signifcant importance both fund.mentally and.practically for its enormous potential in increasing the channel information *** this work,a d.rect use of orbital angular momentum mod.s to encod./d.cod. and.multiplex twod.mensional images is realized.in a scalable multiview d.splay architecture,which can be utilized.for viewing three-d.mensional images from d.ferent *** efect of of-axis encod.ng/d.cod.ng and.the resultant crosstalk between multiplexed.d.ferent twod.mensional views are *** on which,a color d.splay of good.image quality with four ind.pend.nt views is *** resolution of the d.cod.d.images is analyzed.and.the limitation of this approach ***,a spatially multiplexed.d.ta communication scheme is also proposed.with such a two-d.mensional encod.ng/d.cod.ng approach to signifcantly enhance the d.ta transmission capacity in free space for future d.ta communication need..

关键词： orbital momentum utilized

Ni_(3)B mod.fied.BiVO_(4) photoanod.s for enhanced.photoelectrochemical water splitting:The key role of Ni_(3)B on red.cing the water oxid.tion barrier

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Nano Research 2023年第10期16卷 12043-12049页

作者： Kehui Xue Haifeng Zhu Xingyu Zhao liana Alvares Rod.igues d.Amaranatha Red.y Yaping Zhang lianqing Yu school of Materials science and.Engineering China University of Petroleum(East China)QingDao 266580China College of science China University of Petroleum(East China)QingDao 266580China Engineering school of lorena University of São PauloCEP 12602-810São PauloBrazil Ind.an Institute of Information Technology d.sign and.Manufacturing Kurnool 518007India

Bismuth vanad.te(BiVO_(4),BVO)as a promising photoelectrod. has been received.great attention for photoelectrochemical(PEC)water ***,the slow oxid.tion kinetics on the surface of BiVO_(4)limited.the PEC water splitting ***,nickel borid.(Ni_(3)B,NB)nanoparticles,generally used.in electrocatalytic field.material,were mod.fied.on the surface of BiVO_(4)photoelectrod. as an efficient cocatalyst to accelerate the oxygen evolution *** as-prepared.BVO-NB-5P photoelectrod. exhibits a remarkable photocurrent d.nsity of 1.47 mA·cm^(−2)at 1.23 V versus the reversible hyd.ogen electrod.(RHE)und.r air mass(AM)1.5 G illumination,which is about 2.8 times higher than the bare BiVO_(4)photoelectrod.,and.its water splitting rate is 11.3 times higher than bare BiVO_(4).The PEC stud.es reveal that the spin coated.Ni_(3)B crystal cocatalyst could.effectively red.ce the water oxid.tion barrier,and.improve the surface charge injection efficiency to 94%,which could.boost the photogenerated.holes reaction to enhance the PEC performance of BiVO_(4)photoelectrod..

关键词： photoelectrochemical water splitting BiVO_(4) Ni_(3)B

Comprehensive insights into the thermal and.mechanical effects of metallic glasses via creep

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Journal of Materials science & Technology 2022年第4期99卷 39-47页

作者： Z.R.Xu J.C.Qiao J.Wang E.Pined. d.Crespo school of Mechanics Civil Engineering and ArchitectureNorthwestern PolytechnicalUniversityXi’an 710072China state Key laboratory of solid.fication Processing Northwestern PolytechnicalUniversityXi’an 710072China d.partment of Physics Barcelona Research Center in Multiscale Science and TechnologyInstitute of Energy TechnologiesUniversitat Politècnica de CatalunyaBarcelona 08019Spain

Evolution of d.formation and.relaxation behaviors of a prototypical Cu_(46)Zr_(46)A_(l8)metallic glass was explored.by extensive creep tests und.r both physical aging and.cyclic *** insights into the microstructure-ind.ced.d.namic heterogeneity which accommod.tes creep d.formation were successively revealed.via experimental measurements and.spectral *** annihilation of local d.fects within metallic glass with increasing annealing time and.cyclic numbers was observed.through the red.ction of amplitud. in both activation energy spectra and.relaxation-time spectra,which were also accompanied.by an ascend.ng value of β_(KWW).It is further found.that the correspond.ng d.formation units within the metallic glass d. not d.sappear permanently,but are recoverable over the course of cyclic *** apparent suppressed.relaxation process can be grad.ally alleviated.with increasing resuming time between two consecutive cycles,behaving d.fferently from physical aging,which ind.cates a notable d.screpancy between thermal treatment and.mechanical treatment.

关键词： Metallic glasses Creep Physical aging Cyclic load.ng Relaxation-time spectrum