简介：Atpresent,theneuropathologicalmechanismsandtheplasticchangesofbraincognitivefunctioninpatentswithfrontlobetumorremainunclear,moststudiesjustfocusedonglobalmeasuresofbrainfunctionalconnectivitywithoutconsideringthetimecorrelationinthedifferentregionsofthebrain.Thisstudyaimstoinvestigatebraincognitivealterationsandfunctionalplasticityinpatientswithfrontlobetumoratresting-statebyconductingfunctionalconnectivitydensity(FCD)mappingandgrangercausalityanalysis(GCA).Firstly,FCDmappingwasusedtoextractabnormalfunctionalconnectivity(FC)ofpatientswithfrontallobetumor,andanalyzedalteredbrainFCinbothshort-andlong-rangeFCD.Then,thevoxel-wiseGCAmethodwasusedtoanalyzethecausalrelationshipbetweenalteredFCregionsandotherregionsinordertodetectthetimecorrelationbetweenregionsofinterest(ROI)andrevealthedirectionofinformationflowbetweenbrainROIs.Itwasfoundthatpatientshadincreasedshort-rangeFCDinmotorandspaceattentionfunctionareas,hadincreasedshort-andlong-rangeFCDsbothinTemporalandInsula,andthecausalcoefficientswerechangedobviouslyinTemporalandFrontal.Theresultsshowthatthereisafunctionalplasticityinspaceattentionfunctionareas.TemporalandInsulaareaffectedbytumorinfrontallobe,andfunctionalreorganizationappearsinsideTemporal.

简介：Kang-DianregionislocatedonthesouthernpartofthefamousNorth-Southactivetectonicbelts,whichisapartofChina-Mongoliacentralaxesstrongearthquakebeltandthehugecrustalthicknessundulationbelt.Manygeolo-gistsareinterestedinitduetoitsseismicityandabundantmineralresource.Weinvertedmeancrustaldensityanddensityanomaliesonthedifferentlayerinthedepthrangeof10~100km,usingthegravityfieldthatistreatedbyseparationandadjustment.Combiningothergeophysicaldatatoanalyzethedensitydata,theresultsshowthatthereisdifferencebothintectonicfeatureandgeophysicalfeaturebetweenKang-Dianlozengeblockanditswest-ernandeasternparts.

简介：Acombinedmethodofdensityfunctionaltheory(DFT)andstatisticsintegralequation(SIE)forthedeterminationoftheporesizedistribution(PSD)isdevelopedbasedontheexperimentaladsorptiondataofnitrogenonactivatedmesocarbonmicrobead(AMCMB)at77K.TheporesofAMCMBaredescribedasslit-shapedwithPSD.BasedonthePSD,methaneadsorptionandphasebehaviorarestudiedbytheDFTmethod.BothnitrogenandmethanemoleculesaremodeledasLennard-Jonessphericalmolecules,andthewell-knownSteele's10-4-3potentialisusedtorepresenttheinteractionbetweenthefluidmoleculeandthesolidwall.InordertotestthecombinedmethodandthePSDmodel,theIntelligentGravimetricAnalyzer(IGA-003)wasusedtomeasuretheadsorptionofmethaneontheAMCMB.TheDFTresultsareingoodagreementwiththeexperimentaldata.Basedonthesefacts,wepredicttheadsorptionamountofmethane,whichcanreach32.3ωat299Kand4MPa.TheresultsindicatethattheAMCMBsareagoodcandidateforadsorptivestorageofmethaneandnaturalgas.Inaddition,thecapillarycondensationandhysteresisphenomenonofmethanearealsoobservedat74.05K.

简介：Accordingtotheprincipleofthemicrowaveinterferometer,theaverageelectrondensityduetophasevariationobtainedbyinterferometercanbewrittenas:

简介：Na0.5CoO2的费密表面拓扑学用混合密度被学习功能的理论。我们首先学习一个单身者(CoO2)(0.5-)有从0%～20%变化的非局部的Hartree-Fock交换的百分比的层模型。结果看那混合非局部的Hartree-Fock交换是否仅仅在1%和5%之间，费密表面拓扑学类似于试验性的。与在混合密度的3%HF交换功能就在Na-0.5CoO2系统的效果ofNa离子而言，我们结束费密表面被切开加倍洞，小差距在在Brillouin地区和费密表面之间的交叉附近开。我们两个都，非局部的Hartree-Fock的数量在功能的混合密度交换的结果表演然后一离子在费密表面拓扑学上有许多影响。

简介：Background:Amongthemostimportantaspectsofriskandhazardstudiesrelatingtoforestecosystemsaremaximumforestdensityanddensity-dependenttreesurvival.Methods:Long-termobservationsaboutthemaximumdensityofunthinnedPinuspatulaandP.elliottiifieldplotsbasedontheCorrelatedCurveTrend(CCT)spacingstudieswhichwereestablishedalmost8decadesagobyO’Connor(ForestResearchwithSpecialReferencetoPlantingDistancesandThinning,1935)inSouthAfrica.Threespecificapproacheswereintroducedforanalysingmaximumdensityandtreesurvival,namelythe‘limitingline’,Nilson’ssparsityandtreesurvivalwiththeWeibullfunction.Results:Themainresultsare:a)Maximumdensitiesdiffergreatlyamongthetwospeciesgrownonthesamesiteandwithinthesamespeciesgrownondifferentsites;itispossibletorelatethesedifferencestositeindexinbothspecies.b)Therelationshipbetweenthequadraticmeandiameterandtheminimumaveragespacingofsurvivingtrees(knownasNilson’sSparsity)appearstobesurprisinglysimilarinbothspecies.c)AnanalysisoftreesurvivalinresponsetodifferentinitialplantingespacementsshowsthattheWeibullsurvivalfunctionparameterscanbeestimatediftheinitialplantingdensityisknown.Thisresultispresentedforeachoftheeightlargeexperimentsusedinthisstudy.Conclusions:Thisstudycontributestoabetterunderstandingoftreesurvivalandmaximumdensitywhicharethekeyfactorsrequiredforestimatingriskanduncertainty.Theriskoftreemortalityisnotconstant,butvarieswithtreespecies,plantingdensity,treeageandgrowingsite.Forestimatingthatrisk,therefore,continuouslong-termobservationondifferentsitesandwithvaryingplantingdensities,asprovidedbytheunthinnedCCTseries,areessential.

简介：源于空气包裹扩大/压缩的密度效果的修正在当开路径的系统被使用时，解释水汽和公司2的旋涡协变性流动是重要的。到为这些效果的报道，干空气的密度的吝啬的垂直速度和不安是在对待为密度变化负责的那些物理进程的二个批评参数。基于各种各样的内在的假设，不同研究为干空气的密度的吝啬的垂直速度和不安获得了不同公式，导致很多条途径改正密度效果。在这研究，我们再考与被做到的不同假设有关的物理过程提出密度效果。明确地，我们覆查零干空气流动的假设和在表面层的零湿空气流动，使用为改正密度效果对待密度变化，和他们的含意。在与零干空气流动的假设的关系的物理过程说明对密度变化的干空气扩大/压缩的影响，这被发现。同时，在与零湿空气流动的假设的关系的物理进程说明对密度变化的湿空气扩大/压缩的影响。在这研究，我们另外覆查混合比问题。我们的结果显示零干空气流动的假设相对干空气赞成混合比的使用，当零湿空气流动的假设相对全部的湿空气赞成混合比的使用时。另外，我们为吝啬的垂直速度比较不同公式，由空气包裹扩大/压缩产生了，并且为使用的密度效果修正，旋涡协变性数据测量了超过三个北方的生态系统。

简介：AbstractBackground:Ankylosing spondylitis (AS) is a common chronic progressive rheumatic disease. The aim of this study was to explore factors influencing abnormal bone mineral density (BMD) in young and middle-aged patients with AS.Methods:From July 2014 to August 2018, hospitalized patients with AS and health examinees in the health examination center of our clinics, ranging in age from 20 to 50 years, were monitored. The BMD of the lumbar spine and femoral neck of AS patients and those of a healthy control group were measured using dual-energy X-ray absorption. The BMDs of AS patients were compared with respect to age, course of disease, iritis, smoking habits, sex, height, weight, body mass index (BMI), medication use, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), platelet volume, platelet count, uric acid (UA), alkaline phosphatase (AKP), and calcium ion levels. Single-nucleotide polymorphisms (SNPs) related to BMD were screened using genome-wide association analysis.Results:There was no statistical difference in the proportion of abnormal bone masses between the different body parts. The BMD of all bones in AS patients was lower than that in healthy controls (P < 0.05). Additionally, BMD was correlated with serum calcium and CRP in AS patients (P < 0.05), but not with age, platelet volume, platelet count, ESR, UA, AKP, height, weight, and BMI. The incidence of abnormal bone mass in AS patients was correlated with sex (P < 0.05), but not with medication use, iritis, or smoking. BMD of the lumbar spine in AS patients did not correlate linearly with the course of the disease, but BMD of the femoral neck correlated linearly with the course of the disease (P < 0.05). BMD was correlated with multiple SNPs in patients with AS. Lumbar BMD was correlated with rs7025373 and rs7848078. Femoral head BMD was correlated with 3:102157365, 3:102157417, rs1252202, rs1681355, rs3891857, rs7842614, and rs9870734, suggesting that genetic factors play a role in BMD in patients with AS.Conclusions:The proportion of abnormal bone mass in AS patients was higher than that in healthy individuals of the same age. The factors related to BMD in patients with AS are gender, CRP, and blood calcium. The BMD of the femoral neck of AS patients decreases with the course of the disease, but BMD of the lumbar spine is not related to the course of the disease. BMD in AS patients is associated with multiple SNPs.

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简介：Flowbatterieswithhighenergydensityandlongcyclelifehavebeenpursuedtoadvancetheprogressofenergystorageandgridapplication.Non-aqueousbatterieswithwidevoltagewindowsrepresentapromisingtechnologywithoutthelimitationofwaterelectrolysis,buttheysufferfromlowelectrolyteconcentrationandunsatisfactorybatteryperformance.Here,anon-aqueouslithiumbrominerechargeablebatteryisproposed,whichisbasedonBr2/Br-andLi+/Liasactiveredoxpairs,withfastredoxkineticsandgoodstability.TheLi/Brbatterycombinestheadvantagesofhighoutputvoltage（3.1V）,electrolyteconcentration（3.0mol/L）,maximumpowerdensity（29.1mW/cm2）andpracticalenergydensity（232.6Wh/kg）.Additionally,thebatterydisplaysacolumbicefficiency（CE）of90.0%,avoltageefficiency（VE）of88.0%andanenergyefficiency（EE）of80.0%at1.0mA/cm2aftercontinuouslyrunningformorethan1000cycles,whichisbyfarthelongestcyclelifereportedfornon-aqueousflowbatteries.

简介：AnalgorithmforcomputationofcloudmotionwindshasbeendevelopedattheNationalSatelliteMeteorologicalCenterinChina.Since1997,ithasbeenappliedtocalculatethecloudmotionwindsfora1.25lat.×1.25long.meshoverthenorthwestPacificregionwiththesatellitedatafromGMS-5.Thedevelopmentofthetropicalcyclonesisstudied.Itshowsthatthetropicalcycloneisusuallyintriguedbythewesterlyjetstreamsattheupperlevelsofthetroposphere,whichmaybecausedbymid-latitudetroughswellextendingintothetropics.Duringtheprimeseasonofsummer,thewesterlyflowingequatorwardoftheTUTTmayalsobeacauseforthegenerationoftyphoons.

简介：在人口分发和密度学习变化能为地区性的开发提供重要基础并且计划。空间模式和在在中国的人口密度的变化的开车因素还不是清楚的。用在2000和2010的人口普查数据，因此，这研究第一在中国分析了人口密度的变化并且在所有2353个县把变化划分了成4种类型，由快速的增加，慢增加，慢减少和快速的减少组成。随后，基于部分最少的平方(请)回归方法，我们认出了重要因素(在11个自然、社会经济的因素之中)为有人口变化的不同类型的整个国家和县的影响人口密度变化。结果显示出那：(1)在2010，与在2000的人口密度相比，在大多数县(超过60%)的人口密度每km由21个人增加了2平均，当在另外的县的人口密度每km由13个人减少了时2。所有2353个县，当458和446个县分别地在人口密度显示出慢、快速的减少时，860和589个县分别地在人口密度显示出快速、慢的增加。(2)在11个因素之中，社会经济的因素比自然因素更显著地影响了人口密度变化。更高经济的发展水平，更好医药的条件和更强壮的通讯能力是人口增加的主要的拉因素。稠密的人口密度是人口减少的主要的推因素。这些结论在过去的10年在中国澄清了人口变化和它的影响因素的空间模式并且能为计划的未来人口提供有用参考。

简介：特别为道路线住所，马来西亚切割斜坡对侵蚀和山崩敏感。这些问题主要由于植被盖子和强壮的腐蚀力量的缺乏发生。另外，地形学因素也成为了影响土壤降级的一个主要因素。因此，这研究针对决定种选择的种的密度的效果，也就是Melastomamalabathricum；一，二，和三棵幼苗每盒子在在在Guthrie走廊高速公路的不同取向(早上和晚上阳光)的选择斜坡的侵蚀率上，Selangor。在六月观察内，有早上阳光斜坡上的三个幼苗/盒子的处理在晚上阳光斜坡上与一样的处理比那些在69.2%显示出更低的侵蚀率。另外，在月六点记录的三棵幼苗(最后的观察)的处理有土壤浸透水平(STL)的最高的减小，在23.6%。而且，种类的生理的价值学习了，在早上阳光斜坡上成年，分别地由12.1%and15.8%(三个幼苗/盒子)以有气孔的传导力和光合的率是更高的。全面结果证明那植物密度是相反地在斜坡上与STL和侵蚀有关评价。在结论，三个幼苗/盒子和早上阳光取向的种的密度在植物上给了积极效果斜坡的生理的性能，减少STL，以及减轻斜坡土壤的侵蚀率。

简介：Magneticrotationandantimagneticrotationareexoticrotationalphenomenaobservedinweaklydeformedornear-sphericalnuclei,whicharerespectivelyinterpretedintermsoftheshearsmechanismandtwoshearslikemechanism.Sincetheirobservations,magneticrotationandantimagneticrotationphenomenahavebeenmainlyinvestigatedintheframeworkoftiltedaxiscrankingbasedonthepairingplusquadrupolemodel.Forthelastdecades,thecovariantdensityfunctionaltheoryanditsextensionhavebeenprovedtobesuccessfulindescribingseriesofnuclearground-statesandexcitedstatesproperties,includingthebindingenergies,radii,single-particlespectra,reso-nancestates,halophenomena,magneticmoments,magneticrotation,low-lyingexcitations,shapephasetransitions,collectiverotationandvibrations,etc.Thisreviewwillmainlyfocusonthetiltedaxiscrankingcovariantdensityfunctionaltheoryanditsapplicationforthemagneticrotationandantimagneticrotationphenomena.

简介：Inviewoftheimportanceofdispersionagent,theamountofthecrosslinkingmonomerandthediluentinsuspensionpolymerizationfortheproductionofparticlesizenarrowlydistributedlow-densitystryenedivinylbenzenecopolymermicrobeads(LDPS),theiractionsarepreliminarilyinvestigatedinthispaper.Experimentalresultsindicatethatwhenboththegelatineandpolyvinylalcohol(PVA)areuseddispersionagents,thebettereffectisachieved,DVBishelpfultotheformationofthelowerdensityfineparticles,theproportionoftheDVB/Stshouldbebetween1:1-1.5:1.Comparedwithtoluene,gasolineisthemoreeffectivediluentfortheabovetarget.

简介：Basedonlefttruncatedandrightcensoreddependentdata,theestimatorsofhigherderivativesofdensityfunctionandhazardratefunctionaregivenbykernelsmoothingmethod.Whenobserveddataexhibitα-mixingdependence,localpropertiesincludingstrongconsistencyandlawofiteratedlogarithmarepresented.Moreover,whenthemodeestimatorisdefinedastherandomvariablethatmaximizesthekerneldensityestimator,theasymptoticnormalityofthemodeestimatorisestablished.

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简介：ThesolutionofGrad-Shafranovequationdeterminesthestationarybehavioroffusionplasmainsideatokamak.Tosolvetheequationitisnecessarytoknowthetoroidalcurrentdensityprofile.Recentworksshowthatitispossibletodetermineamagnetohydrodynamic(MHD)equilibriumwithreversedcurrentdensity(RCD)profilesthatpresentsmagneticislands.InthisworkweshowanalyticalMHDequilibriumwithaRCDprofileandanalyzethestructureofthevacuumvectorpotentialassociatedwiththeseequilibriausingthevirtualcasingprinciple.

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