简介：摘要本文主要介绍青浦区徐泾镇会展中心3地块项目在设计工程中遇到的问题及解决方案。主要包含建筑物室内排水系统，核心筒结构穿管设计，逐层退台的露台雨水设计，虹桥机场区域航空限高线限制条件，以及地下室防火卷帘采用水幕冷却保护。为以后的项目提供更好的设计经验。

简介：摘要本文对铜仁市2016年7月3-4日暴雨发生的天气背景、中小尺度系统发生等详细分析，探讨暴雨过程形成的物理机制，并从中总结暴雨天气发生及发展演变规律和特征，为今后的暴雨预报工作积累一定经验，以提高暴雨预报预测能力。

简介：Thecomplexnatureoflaser-materialinteractioncausesnon-stoichiometricablationofalloysamples.Thisisattributedtomatrixeffect,whichreducesanalyzingcapability.Toaddressthisissue,theanalyticalperformanceofthreedifferentnormalizationmethods,namelynormalizationwithbackground,internalnormalizationandthreepointsmoothingtechniquesatdifferentparametersettingsisstudiedforquantificationofAgandZnbyLaserinducedbreakdownspectroscopy(LIBS).TheLIBSspectraoffiveknownconcentrationofsilverzincbinarycompositeshavebeeninvestigatedatvariouslaserirradiances(LIs).CalibrationcurvesforbothAg(I)line(4d^105s^2S1/2→4d^105p^2P1/2at338.28nm)andZn(I)line(4s5s^3S1→4s4p^3P2at481.053nm)havebeendeterminedatLIof5.86×10^10Wcm^-2.SlopesofthesecalibrationcurvesprovidethevaluationofmatrixeffectintheAg–Zncomposites.Withcarefulsamplepreparationandnormalizationaftersmoothingatoptimumparametersetting(OPS),theminimizationofsamplematrixeffecthasbeensuccessfullyachieved.AgoodlinearityhasbeenobtainedinAgandZncalibrationcurveatOPSwhennormalizedthewholeareaofspectrumaftersmoothingandtheobtainedcoefficientsofdeterminationvalueswereR^2=0.995and0.998closerto1.Theresultsofmatrixeffecthavebeenfurtherverifiedbyanalysisofplasmaparameters.BothplasmaparametersshowednochangewithvaryingconcentrationatOPS.However,athighconcentrationofAg,theobservedsignificantchangesinbothplasmaparametersatcommonparametersettingPS-1andPS-2werethegestureofmatrixeffect.Inourcase,thebetteranalyticalresultswereobtainedatsmoothingfunctionwithoptimizedparametersettingthatindicatesitismoreefficientthannormalizationwithbackgroundandinternalnormalizationmethod.

简介：Variousagriculturalcropresiduesincludingcornstover,corncob,andsorghumstalkwithamoisturecontentof75wt%weresubjectedtoalongpretreatment(12-60h)withsupercriticalCO2(scCO2),atlowtemperature(50-80℃)andapressureof17.5-25.0Mpa.Thesugaryieldsfromtheenzymatichydrolysis(EH)ofthepretreatedsampleswereasmuchasthree-tofourfoldgreaterthanthoseaffordedbytherawmaterials.However,whenpretreatmentwasconductedwithinashorttime(e.g.0.5h),aspreviouslyreportedintheliterature,onlyaslightincreaseintheEHsugaryieldswasobserved.TheproposedscCO2pretreatmentmechanismdemonstratedtheroleofmoistureinthesystem.Wetting,softening,andswellingwereobservedtomainlyaffectthelignocellulosewhenasuitableamountofwaterwasadded.Finally,thesampleswereanalysedbyX-raydiffractionandscanningelectronmicroscopy,beforeandafterpretreatment,toinvestigatethechangesinthemicroscopicstructureofthebiomass.

简介：摘要目的分析该院2016-2017年3种抗癫痫药血药浓度监测数据。方法研究对象为抗癫痫药患者例数90例，均只使用一种抗癫痫药进行治疗，根据不同抗癫痫药方式对研究对象90例进行分组，患者收取时间在2016年1月2日到2017年1月2日，分为a组(丙戊酸钠药物)、b组(卡马西平药物)，c组(苯妥英钠药物)，对3种抗癫痫药血药浓度进行监测和分析。结果苯妥英钠、丙戊酸钠、卡马西平等抗癫痫药血药浓度结果具有显著差异，苯妥英钠偏离有效浓度范围比例较高，而丙戊酸钠在有效浓度范围内比例较高（P＜0.05）。结论苯妥英钠、丙戊酸钠、卡马西平3种抗癫痫药血药浓度具有一定差异，丙戊酸钠在有效浓度范围内比例较高，同时正确进行药物监测，给予每位患者制定给药方式，能显著提高癫痫疾病治疗的有效性和安全性。

简介：摘要在高层和超高层建筑施工中，普通外脚手架存在钢管用量大、使用周期长、高空作业危险系数大、高层消防难度大等一系列问题。YDC-02型装配式附着升降脚手架采用集成型架体，主框架采用钢制型材定型加工，整体性好，防护网采用冲压钢板密目网，防火阻燃、强度高，从根本上解决了高层消防问题，节约了成本，提高了安全性。

简介：EffectsoftheorientationandapexangleonthesettlingvelocityofconicalparticlesinBinghamplas-ticfluidsarenumericallyinvestigatedoveraReynoldsnumberrangeof1≤Re≤100,Binghamnumberrangeof0≤Bn≤100,andconeanglerangeof20≤α≤150°.Governingequations(ofcontinuityandmomentum)aresolvednumericallyusingthefiniteelementmethodtoobtainvelocityandpressurefieldsthatarepostprocessedtoobtainvaluesofthedragcoefficien.Futthermore,theeffectofconeori-entationontheflowfieldisvisualizedandexploredintermsofstreamlinecontoursandthemorphologyofyielded/unyieldedregions.Finally,theobtainedvaluesofdragarecorrelatedviaasimplepredictiveexpressionintermsofthemodifiedReynoldsnumber.Theeffectoftheconeangleondragisfoundtobemoderatebecausethedragforceactingonthelateralsurfaceisasmallfractionoftheoveralldrag.

简介：Glowdischargeisintroducedasanartificialdisturbancetoinvestigatetheevolutionoffirst-andsecond-modeinstabilitiesinahypersonicflatplateboundarylayer.ExperimentsareconductedinaMach6.5quietwindtunnelusingRayleighscatteringvisualizationandparticleimagevelocimetry(PIV).Detailedanalysisoftheexperimentalobservationsisprovided.Itisfoundthattheartificiallyintroduced17kHzdisturbance,whichbelongstothefirst-modefrequencyband,caneffectivelyenhancefirst-modewaves.Moreover,itcanenhancesecond-modewavesevenmoreintensely.Possiblemechanismstoexplainthisphenomenonarediscussed.

简介：Anovelgas-phaseelectrocatalyticcellcontainingalow-temperatureprotonexchangemembrane(PEM)wasdevelopedtoelectrochemicallyconvertCO2intoorganiccompounds.TwodifferentCu-basedcathodecatalysts(CuandCu-C)werepreparedbyphysicalvapordepositionmethod(sputtering)andsubsequentlyemployedforthegas-phaseelectroreductionofCO2atdifferenttemperatures(70-90℃).ThepreparedelectrodesCuandCu-CwerecharacterizedbyX-raydiffraction(XRD),X-rayphotoemissionspectroscopy(XPS)andscanningelectronmicroscopy(SEM).Asrevealed,CuispartiallyoxidizedonthesurfaceofthesamplesandtheCuandCu-Ccathodiccatalystswerecomprisedofaporous,continuous,andhomogeneousfilmwithnanocrystallineCuwithagrainsizeof16and8nm,respectively.Theinfluenceoftheappliedcurrentandtemperatureontheelectro-catalyticactivityandselectivityofthesematerialswasinvestigated.Amongthetwoinvestigatedelectrodes,thepureCucatalystfilmshowedthehighestCO2specificelectrocatalyticreductionratesandhigherselectivitytomethanolformationcomparedtotheCu-Celectrode,whichwasattributedtothehigherparticlesizeoftheformerandlowerCuO/Curatio.Theobtainedresultsshowpotentialinterestforthepossibleuseofelectrical「enewableenergyforthetransformationofCO2intovaluableproductsusinglowmetalloadingCubasedelectrodes(0.5mgCucm2)preparedbysputtering.

简介：摘要：本项目以楚雄换流站的选相合闸装置为依托，装置运行过程中的热效应是设备老化、绝缘下降乃至故障的重要原因，设备的运行温度是限制设备负荷能力的重要因素。而环境温度又与设备的运行温度及散热效果密切相关。通过优化和改善变电所设备所处环境的小气候，自动跟踪环境温度变化进行动态控制，以适应设备负荷变化引起的发热量变化以及环境温度变化，可为设备营造一个干燥、温度适宜的均衡、稳定的运行环境，体现了对设备故障的一种主动防御思想。可有效降低设备的故障概率，延长设备的使用寿命以及发挥设备的最大效能，提高装置的可靠性。

简介：内容摘要改革开放以来，我国的经济迅速发展，在大型铸件铸造方面，铸造技术和铸造方法随着经济的发展也处于不断的创新中，在这个过程中，铸件会出现气孔、缩松、裂纹等各种缺陷，影响铸件的机械性能和使用安全，通常可以将缺陷清除后，选择相同、相似或者更优的焊材进行铸件补焊。针对以上问题，本文对手工电弧焊与二氧化碳气体保护焊进行了详述的概括，分析讨论了二者的优缺点，并且通过实验，在保证了试块拉伸、弯曲、冲击、硬度等机械性能的情况下，针对不同的焊块类型，确定出合理的焊接工艺及相应的焊后热处理方法，并且研究了手工电弧焊与二氧化碳气体保护焊相结合的创新方法，一定程度上增强了焊铸的效率，为铸件缺陷补焊工作提供了有力的技术支持。

简介：Monoclinicparacetamol(PA)isnotoriousasapoorlycompactiblemodeldrug.Polyvinylpyrrolidone(PVP)isapolymerthatcanactasaneffectivebindertoimprovethemechanicalpropertiesofPA.ItissurprisinghoweverthattheroleofmixingconditionsonthephysicochemicalandmechanicalpropertiesofPA-PVPmixtureshasnotbeenreportedpreviously.TheresultsofthisworkshowedthatPA-PVPmixturescontaining5%(w/w)PVPpreparedusinghighenergymixingconditionshadconsiderablysmallerparticlesizedistributionsandhighercohesivitiesthanmixturespreparedusinglowenergymixingconditions.Solid-stateanalysisdidnotdetectanychangeinthemonocliniccrystallineformofPAaftermixingwithPVP.ThefollowingrankorderoftabletabilityforPA-PVPmixtureswasobtainedaccordingtothemixingcondition:lowshear-mediumshear

简介：Purpose':Physicalactivity(PA)andfundamentalmotorskillsareimportantcomponentsofcurrentandfuturetrajectoriesofhealthinyoungchildren.Thisstudyexaminedtheeffectsofa5-weekmotorskillinterventiononpreschoolers,motorskillcompetenceandtheirPAbehaviorswhileparticipatinginthemotorskillinterventionoroutdoorfreeplay(recess).Methods'.Atotalof102preschoolersservedasparticipantsandwerepartofamotorskillinterventiongroup(n=64)oracontrol/outdoorfreeplaygroup(n=38).Children'smotorskillswereassessedbeforeandaftertheinterventionusingtheTestofGrossMotorDevelopment-3rdedition.PAduringthemotorskillinterventionandoutdoorfreeplaywasassessedusingaccelerometersbothimmediatelybeforethestart(baseline,Week0orWeek1)andend(late.Week5orWeek6)oftheintervention.Results:Allchildrensignificantlyimprovedtheirmotorskillsfrombaselinetolateassessment(p<0.05).Childreninthemotorskillinterventiondemonstratedgreaterratesofchange(p<0.001)andscoredhigheronallmotorskillsatthelateassessmentcomparedwiththecontrolgroup(p<0.001).Therewasnoeffectofgroup(controlvs.intervention),buttherewasasignificanteffectofsexonchildren'sPAduringoutdoorfreeplayatbaseline(p<0.05).Similarly,therewasnoeffectofgrouponPAduringdayswiththemovementprogram(interventionvs.outdoorfreeplay)ateithertimepoint,butboysweremoreactivethangirlsatthelateassessment(p<0.05).Last,childrenintheinterventionengagedinmorePAwhileparticipatingintheinterventiontowardtheendoftheinterventionthanatthebeginning.Conclusion'.The5-weekmotorskillinterventionwaseffectiveatimprovingpreschoolers,motorskillsandratesofchangeinmotorskillswerehigherforchildrenwhocompletedtheinterventioncomparedwithchildreninthecontrolgroup.PreschoolersintheinterventiondiddemonstratePAchangeswhileparticipatingintheintervention,

简介：高校排名作为国际上通行的一种院校评价手段,对于政府的政策选择、院校的发展规划、企业的合作选择、学生的求学选择等,具有重要的参考价值。综述2005—2016年高职院校排名文献,对有关竞争力、影响力的研究观点进行归纳和整理,以期形成科学的评价模型。

简介：摘要新课标全国卷选修3-3热学问题在高考中有一道“5选3型”选择题，本研究从课程标准、考试大纲、教材体系、历年高考真题、复习及应试策略等方面进行了简要分析。

简介：摘要从2017年起，我国的部分城市开始实行了新的高考的体制，即3+3模式，另外到了2108年实施3+3高考模式的城市又增加了17个省。而面对这种新的高考的体制，使得物理的学习受到了冷落的现象。那么我们需要重新审视物理学科在这种高考模式下的重要的地位，深刻的认识到它的重要性。并针对于高考改革的一些具体的内容，分析出如何才能够更好的进行物理的教学使其能够顺应时代的发展和改革的体制，针对于当下的物理教学的方法展开详细的探究。

简介：摘要：结合我单位 在容器 产加工过程中，裙座下料工序存在的问题进行了分析，并提出了解决措施，裙座下料 效率和质量 也得到明显的改观。

简介：Step-edge-inducednucleationplaysakeyroleincontrollingthegrowthofnovelnanostructuresandlow-dimensionalmaterials.However,itisdifficulttoexperimentallydeterminethestepedgestructuresofcomplexmetaloxides.Inthiswork,wepresentadetailedtheoreticalstudyofthestabilityofstoichiometTicstepsonsapphire(OOOl).Basedonfirst-principlescalculationsandexcesschargecomputationbyFinnis1approach,apairofnon-polarstepedgesaredeterminedtobethemoststable.BystudyingtheadsorptioncharacteristicsofZnOandcombiningpreviousworks,wesuccessfullyexplainedhowgrowthtemperatureanddepositionrateaffectthein-planeorientationofZnOgrownonsapphire(OOOl).Theknowledgeonthestepedgestructuresandnucleationpatternswouldbenefitthestudyonstep-edge-guidednanostructuregrowth.

简介：Ininsects,thegustatorysystemplaysacrucialroleinmultiplephysiologicalbehaviors,includingfeeding,toxinavoidance,courtship,matingandoviposition.Gustatorystimulifromtheenvironmentarerecognizedbygustatoryreceptors.Todate,littleisknownaboutthefunctionofgustatoryreceptorsinagriculturalpestinsects.Inthisstudy,weclonedasugargustatoryreceptorgene,N/Gr11,fromthebrownplanthopper(BPH),Nilaparvatalugens(Stal),aseriouspestofriceinAsia;wethenidentifieditsligands,namely,fructose,galactoseandarabinose,bycalciumimagingassay.AfterinjectionofN/Gr11doublestrandedRNA,wefoundthatthenumberofeggslaidbyBPHdecreased.Moreover,wefoundthatN/Gr11inhibitedthephosphorylationofadenosinemonophosphate-activatedproteinkinase(AMPK)andpromotedthephosphorylationofproteinkinaseB(AKT).ThesefindingsdemonstratedthatN/Gr11couldacceleratethefecundityofBPHthroughAMPK-andAKT-mediatedsignalingpathways.Thisisthefirstreporttoindicatethatagustatoryreceptormodulatesthefecundityofinsectsandthatthereceptorcouldbeapotentialtargetforpestcontrol.

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