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187 个结果
  • 简介:Hengduan山为许多生态的服务提供陆地空间。然而,陆地空格的持续开发和管理被增加的人的活动在最近的年里质问了。这份报纸在不同高度执行各种各样的风景的量、结构的变化的空间模式分析,并且在1990,2000,2010和2015使用陆地使用数据揭示各种各样的陆地模式怎么变化了。结果证明在production-living-ecological空间纲要以内,生态的空间统治Hengduan山,当生产和生活空间主要在南方区域被散布时。在1990-2015期间,production-living-ecological空间变化逐渐地被加速了,地区性的差别变得更突出。农业生产空间连续地由1132.31km2,减少了并且工业并且采矿生产空间很快在1990-2015期间由281.4km2增加了。生活空间稳定地增加了,并且生态的空间与变化增加了。在Hengduan山的陆地空间模式被地面极大地限制,例如高度和斜坡。到福雷斯特节目的中国西方的发展策略和回来的农田的实现有利地支持了土地的变化在Hengduan山的空间模式。

  • 标签: 空间变化 陆地 时间 空间模式 农业生产 生活空间
  • 简介:SoutheasternChinacoversanextensiveareafromthelowerreachesoftheYangtzeRivertothesoutheastcoastofChinamainland.OneofitsmaingeologicalfeaturesistheextensiveJura-Cretaceous(Yanshanian)magmatismandrelatedmetallogenesis.Recently,someresearchersadvocatethemantleplumemodelasanexplanation,butalloftheirevidencesaretooambiguous.

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  • 简介:AbstractPurpose:The human-wildlife conflicts (HWCs) causing nuisances and injuries are becoming a growing public health concern over recent years worldwide. We aimed to study the demographic profile, mode of injury, pattern of injury, and outcome of wild animal attack victims presented to the emergency department.Methods:This retrospective cross-sectional study was conducted in the emergency department of a tertiary-care hospital in Eastern India. Data were retrieved from the medical records from May 2017 to May 2021. Patients of all ages and genders attacked by wild animals and secondary injuries were included in this study. Patients with incomplete data, injuries due to the attack of stray and domestic animals and trauma due to other causes were excluded. Demographic profile, mode of injury, the pattern of injury, injury severity score (ISS), radiological pattern, and outcome were recorded. Statistical analysis with R (version 3.6.1.) was conducted.Results:A total of 411 wild animal attack victims were studied, of which 374 (90.9%) were snakebite injuries and 37 (9.1%) were wild mammalian (WM) attack injuries. The mean age of WM attack victims was 46 years, and the male-to-female ratio was 4:1. Elephant attack injury (40.5%) was the most common WM attack injury reported. Most WM attacks (43.2%) occurred between 4:00 a.m. to 8:00 a.m. The median ISS was 18.5 (13-28), where 54.2% of patients had polytrauma (ISS>15). Elephant attack was associated with a higher ISS, but the difference was not significant compared to other animal types (p= 0.2). Blunt trauma was common pattern of injury in the elephant attack injury cases. Lacerations and soft tissue injuries were common patterns in other animal attacks. Among snakebites, neurotoxic was the most common type (55.4%), and lower extremity was the most common site involved.Conclusion:The young male population is the major victim of HWCs; and elephant is the most common animal involved. There is a need to design scientifically sound preventive strategies for HWCs and to strengthen the preparedness in health establishments to manage victims effectively.

  • 标签: Wild animal Injury severity score Elephant Wild boar Polytrauma
  • 简介:Thelong-termtimeseriesanalysisoftheSST(seasurfacetemperature)intheEasternEquatorialPacificOceanandthemonthlyMSL(meansealevel)inthetropicalPacificOceanisconducted.Theirquasiperiodicandlow-frequencyoscillationfeaturesarerevealed.Thesignificantperiodsoflow-frequencyfluctuationsformonthlyMSLintheareaof20°N-20°Sarebetween43.5monthsand50.0months,approximatingcloselyto47.6monthswhichisthesignificantperiodofSSTintheEasternEquatorialPacificOcean.Fromtheresultsofspace-spectralanalysis,thelow-frequencyfluctationsofmonthlyMSLinthetropicalPacificOceanappeartohaveaanticlockwisecircularly-propagatingpattern,whichis,theEasternPacificOcean(off-shoreofMexico)→theareaofNEC(NorthEquatorialCurrent)→theWesternEquatorialPacificOcean→theareaofNECC(NorthEquatorialCounter-Current)→theEasternEquatorialPacificOcean.ThephasesofthepatterncorrespondtothoseofElNinocycle.Onthebasis

  • 标签: tropical PROPAGATING Eastern approximating forecast SHORE
  • 简介:Intheyearof2015,againstthemacroenvironmentofdownwardeconomy,purchaserestrictionandtrafficcontrol,collapsingstockmarketandsoaringoilprice,thenewcarmarketinChinaregisteredthelargestscaleinsevenconsecutiveyearsandparticularlythenewenergycarsalestopsthegloballist.However,suchcriticismas"pollution","trafficjam","excessive

  • 标签: INTERVIEW registered sector PURCHASE traffic DOWNWARD
  • 简介:蜜蜂(Apismellifera)是有强壮的感觉能力和多样的行为的全部剧目的一只社会昆虫并且为学习学习和记忆的neurobiological基础作为一个好模型有机体被认出。在这研究,我们在microRNA(miRNA)和跟随用下一代的小RNA定序和介绍的Solexa/lllumina数字基因表示标签(DGE)的基于迷宫的视觉学习的送信人RNA(mRNA)分析了变化。为定序的小RNA,我们分别地从迷宫和控制组获得了13367770和13132655个干净标签。40差别的一个总数表示了已知的miRNAs在这二件样品之间被检测,并且所有他们在与控制组相比的迷宫组是起来调整的。为DGE,5681320和5939855个干净标签分别地从迷宫和控制组被检测。有388差别的一个总数表示了在这二件样品之间的基因,与起来调整的45基因和在迷宫组下面调整的343基因,与控制组相比。另外,10差别的表示层次表示了基因被量的反向的抄写聚合酶链反应(qRT-PCR)证实,他们中的八个的表示趋势与DGE结果一致,尽管变化的度在振幅是更低的。miRNA和mRNA表示的综合分析显示出那,在表示的40差别之中已知的miRNAs和388差别表示了基因,miRNA/mRNA的60pairs是在我们的现在的学习共同表示被识别。这些结果建议miRNA和mRNA可以在在蜜蜂学习和记忆的进程起一个枢轴的作用。我们的定序的数据为基于迷宫的视觉学习提供全面miRNA和基因表达式信息,它将便于蜜蜂学习和存储器的分子的机制的理解。

  • 标签: mRNA表达 学习模式 迷宫 蜜蜂 微RNA 可视化
  • 简介:ExperimentalStudyonoil-watertwo-phaseflowpatternsandpressurelosswasconductedonahorizontalsteelpipeloopwith26.1mminnerdiameterand30mtotallength.Theworkingfluidsarewhiteoil,dieseloilandtapwater.Severalinstruments,includinganewtypeofliquid-probearesuccessfullyintegratedtoidentify7differentflowpatterns.Thecharacteristicsoftheflowpatternsandthetransitionprocesswereobservedanddepictedinthispaper.Investigationrevealedthatthepressurelosswasmainlydependedontheflowpatterns.

  • 标签: 流动模式 压力损失 油-水二相流 特征识别
  • 简介:Ahybridmethodforsynthesizingantenna’sthreedimensional(3D)patternisproposedtoobtainthelowsidelobefeatureoftruncatedconeconformalphasedarrays.Inthismethod,theelementsoftruncatedconeconformalphasedarraysareprojectedtothetangentplaneinonegeneratrixofthetruncatedcone.Thentwodimensional(2D)Chebyshevamplitudedistributionoptimizationisrespectivelyusedintwomutualverticaldirectionsofthetangentplane.Accordingtothelocationoftheelements,theexcitationcurrentamplitudedistributionofeachelementontheconformalstructureisderivedreversely,thentheexcitationcurrentamplitudeisfurtheroptimizedbyusingthegeneticalgorithm(GA).Atruncatedconeproblemwith8×8elementsonit,anda3Dpatterndesiredsidelobelevel(SLL)upto35dB,isstudied.Byusingthehybridmethod,theoptimalgoalisaccomplishedwithacceptableCPUtime,whichindicatesthatthishybridmethodforthelowsidelobesynthesisisfeasible.

  • 标签: 相控阵列 遗传算法 投影法 低旁瓣 方向图综合 共形
  • 简介:LaiyangformationofJiaolaiBasinisthetargetstratumforoilandgasexploration.Bymeasuringseveralfieldsections,theauthorsfindthatLaiyangformationrevealsthewholeprocessesfromdevelopmenttodeathofthelakebasinanditssedimentaryfaciesdifferindifferentstructurallocations.AnalysesaboutsedimentaryfaciesandpaleocurrentorientationsinassociationwithresearchesaboutthepositivetectonicunitssuchasDayetouhorsebackandChaigouhorstindicatethatLaiyangsagisarelativelyindependentsedimentaryunitthatshowsgreatwaterdepthtypicalofdeeplakeorsemideeplakeandwascontrolledbyWulongcunfaultduringthedepositionperiodofLaiyangformation.ItssedimentsmainlyoriginatedfromJiaobeiupliftareaandDayetouhorseback.Gaomi-Zhuchengsagwasafast-filledbasincontrolledbyWurongfaultandYishufaultzone,beinghighinthenortheastandlowinthenorthwestandcharacterizedbythedevelopmentofpluvialfaciesandfluvialfaciesinmostareas,andwiththedevelopmentoflakefaciesbeinglimitedtolocallow-lyingregions.Selectionofadvantageoushydrocarbonreservoirareasforexplorationpurposemainlyreliesonthesedimentationpatternofprototypebasinandconservationconditions.Thecentral-westareaofLaiyangsagcoveredbyoverlyingLaiyangformationisthemostadvantageousexplorationarea.

  • 标签: PROTOTYPE BASIN advantageous area for oil
  • 简介:Togaininsightsintotheototoxiceffectsofaminoglycosideantibiotics(AmAn)anddelayedperipheralganglionneurondeathintheinnerear.experimentalanimalmodelswerewidelyusedwithseveraldifferentapproachesincludingAmAnsystemicinjections,combinationtreatmentofAmAnanddiuretics,orlocalapplicationofAmAn.Intheseapproaches,systemicAmAntreatmentaloneusuallycausesincompletedamagetohaircellsintheinnerear.Co-administrationofdiureticandAmAncancompletelydestroythecochlearhaircells,butitisimpossibletodamagethevestibularsystem.OnlytheapproachofAmAnlocalapplicationcanselectivelyeliminatemostsensoryhaircellsintheinnerear.Therefore,AmAnlocalapplicationismoresuitableforstudiesforcompletehaircelldestructionsincochlearandvestibularsystemandthefollowingdelayedperipheralganglionneurondeath.Incurrentstudies,guineapigswereunilaterallytreatedwithahighconcentrationofgentamicin(GM,40nig/ml)throughthetympanicmembraneintothemiddleearcavity.AuditoryfunctionsandvestibularfunctionsweremeasuredbeforeandafterGMtreatment.Thelossofhaircellsanddelayeddegenerationofganglionneuronsinbothcochlearandvestibularsystemwerequantified30daysor60daysaftertreatment.TheresultsshowedthatbothauditoryandvestibularfunctionswerecompletelyabolishedafterGMtreatment.Thesensoryhaircellsweretotallymissinginthecochlea,andseverelydestroyedinvestibularend-organs.Thedelayedspiralganglionneurondeath60daysafterthedeafeningprocedurewasover50%.However,noobviouspathologicalchangeswereobservedinvestibularganglionneurons60dayspost-treatment.Theseresultsindicatedthatahighconcentrationofgentamycindeliveredtothemiddleearcavitycandestroymostsensoryhaircellsintheinnerearthatsubsequentlycausesthedelayedspiralganglionneurondegeneration.Thismodelmightbeusefulforstudiesofhaircellregenerations,delayeddegenerationofperipheralauditoryne

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  • 简介:在这篇论文,我们建议一个新关系纲要(R纲要)到XML纲要翻译算法,VQT,它分析价值集的势和用户质问模式并且由在用户询问使用在列和equi加入特征之间的外国关键限制的集的势性质提取含蓄的参考正直。VQT算法罐头把提取暗示参考正直关系信息用于R纲要并且当期末考试结果,创造一个XML纲要。因此,VQT算法阻止R纲要是不正确地折合当翻译代表结果,XML纲要,和它丰富地并且有力地由创造一个XML纲要在R纲要表示所有信息XMLDTD。

  • 标签: 询问模式 相关计划 XML 计算机技术
  • 简介:Fromtheperspectiveofcompressedsensing(CS)theory,thechannelestimationprobleminlarge-scalemultipleinputmultipleoutput(MIMO)-orthogonalfrequencydivisionmultiplexing(OFDM)systemisinvestigated.Accordingtothetheory,thesmallermutualcoherencethereconstructionmatrixhas,thehighersuccessprobabilitytheestimationcanobtain.Aimingtodesignapilotthatcanmakethesystemreconstructionmatrixhavingthesmallestmutualcoherence,thispaperproposesalowcomplexityjointalgorithmandobtainsakindofnon-orthogonalpilotpattern.Simulationresultsshowthatcomparedwiththeconventionalorthogonalpilotpattern,applyingtheproposedpatternintheCSchannelestimationcanobtainthebetternormalizedmeansquareerrorperformance.Moreover,thebiterrorrateperformanceofthelarge-scaleMIMO-OFDMsystemisalsoimproved.

  • 标签: large-scale MIMO CS channel estimation pilot pattern
  • 简介:摘要:作为重要的生态基础设施之一,城市绿地系统不断为城市和郊区提供清新的空气、体育、娱乐。目前景观自然过程与人类分离,自然生态过程与环境可持续性受到严重威胁,可以采用景观格局分析的方法,保护与恢复景观生态过程模式的连续性和完整性,改善城市绿地系统的服务功能。

  • 标签: 城市绿地系统 景观格局 景观生态
  • 简介:AbstractBackground:Previous studies have demonstrated different predominant sites of distant metastasis between patients with and without neoadjuvant chemoradiotherapy (NCRT). This study aimed to explore whether NCRT could influence the metastasis pattern of rectal cancer through a propensity score-matched analysis.Methods:In total, 1296 patients with NCRT or post-operative chemoradiotherapy (PCRT) were enrolled in this study between January 2008 and December 2015. Propensity score matching was used to correct for differences in baseline characteristics between the two groups. After propensity score matching, the metastasis pattern, including metastasis sites and timing, was compared and analyzed.Results:After propensity score matching, there were 408 patients in the PCRT group and 245 patients in the NCRT group. NCRT significantly reduced local recurrence (4.1% vs. 10.3%, P = 0.004), but not distant metastases (28.2% vs. 27.9%, P= 0.924) compared with PCRT. In both the NCRT and PCRT groups, the most common metastasis site was the lung, followed by the liver. The NCRT group developed local recurrence and distant metastases later than the PCRT group (median time: 29.2 [18.8, 52.0] months vs. 18.7 [13.3, 30.0] months, Z=-2.342, P= 0.019; and 21.2 [12.2, 33.8] vs. 16.4 [9.3, 27.9] months, Z=-1.765, P = 0.035, respectively). The distant metastases occurred mainly in the 2nd year after surgery in both the PCRT group (39/114, 34.2%) and NCRT group (21/69, 30.4%). However, 20.3% (14/69) of the distant metastases appeared in the 3rd year in the NCRT group, while this number was only 13.2% (15/114) in the PCRT group.Conclusions:The predominant site of distant metastases was the lung, followed by the liver, for both the NCRT group and PCRT group. NCRT did not influence the predominant site of distant metastases, but the NCRT group developed local recurrence and distant metastases later than the PCRT group. The follow-up strategy for patients with NCRT should be adjusted and a longer intensive follow-up is needed.

  • 标签: Locally advanced rectal cancer Metastases pattern Neoadjuvant chemoradiotherapy Propensity score matching