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199 个结果
  • 简介:Theyearof2000isattheturnofthecenturyaswellasofthemillennium.Themankindwavesfarewelltothe20thcenturyaswellasthesecondmillenniumandwelcomesthe21stcenturyandthethirdmillennium.Atthisspecialjuncture,lookingcloselyatthefuturebasedonunderstandingwhichwasobtainedfromre-viewingandsummarizingthepastandpresentworldpoliticsfromhistoricalandphilosophicalstandpoints,wecanfindthatithasbecomeanunavoidablesubjectonhowtoregardthetrendoftheworldpatterntowardmulti-polarizationandrespon-sibilityadjustmentarisingfromit.

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  • 简介:I.TheargumentinbriefChinabecametheworld'slargestdestinationforforeigndirectinvestment(FDI),almostallofwhichisFDIinmanufacturingandassembly,in2003,beforefallingbackintoasolidsecondplace.TheseFDIflowshaverevolutionizedChina'sindustrialbaseandshiftedthecompositionofChineseexports

  • 标签: 外国直接投资 制造业 中国 跨国公司 改造 技术密集
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  • 简介:与木头纤维素合成联系的UGPase基因被变成C。用调停Agrobacterium的遗传转化的方法的acuminata,;一个有效转变系统为C被开发。根据几的评估,影响调停Agrobacterium的脱氧核糖核酸转移的因素评估的acuminata。当pre有教养的叶将生物的活组织移植于培养基中培养为10min感染相应于OD600(0.5)的一种Agrobacterium文化时,最高的转变率被完成,;在三天的将生物的活组织移植于培养基中培养新生媒介上有教养。南部的杂交的结果证明到一根UGPase基因探针的kanamycin抵抗的射击的genomic脱氧核糖核酸证实了transgene的集成。转变效率(6%)在优化转变过程下面被完成。这个系统应该便于重要有用基因的介绍进C。acuminata。

  • 标签: 遗传转换 森林 树木 栽培方法
  • 简介:Chineseeconomyisfacingthe'newnormal'stateandisintheperiodofreformandtransformation.UnderthebackgroundofGlobalIndustrie4.0,Chinawillhighlydevelophightechnologyfieldsincludingnewenergy,newmaterials,aerospaceindustry,electronicinformation,biologicaltechnology,energyconservation,environmentalprotection,andsoon.China'srareearthindustryhasexperiencedexportpolicyadjustment,thesixbigrareearthsgroupintegration,priceshittingrock-bottomandsmugglingcrackdownin2015.Withtheissueofnewpoliciesand

  • 标签: 互联网 产业转型 MIIT 2015年
  • 简介:Experimentsshowthatsiltsandsiltysoilsexhibitcontractionfollowedbydilationduringshearingandtheslopeoffailurelinedecreasesatlargestrains,termedasphasetransformationbehaviour.Thispaperistodevelopanewmicromechanicalstress-strainmodelthataccountsforthephasetransformationbehaviourbyexplicitlyemployingthephasetransformationlineanditsrelatedfrictionangles.Theoverallstrainincludesplasticslidingandplasticcompressionamonggrains.Theinternal-frictionangleatthephasetransformationstateandthevoidstatevariableareemployedtodescribethephasetransformationbehaviour.ThemodelisexaminedbysimulatingundrainedanddrainedtriaxialcompressiontestsperformedonPiteasilts.Thelocalstress-strainbehaviourforcontactplanesisalsoinvestigated.更多还原

  • 标签: 相变行为 力学建模 三轴压缩试验 细观 应力应变特性 内摩擦角
  • 简介:Sulfurtransformationin3soilsmaintainedinaclosedincubationsystemanditsavailabilitytoplantswereinvestigatedusingcarrier-free^35S-SO4^2-and^35S-labeledryegrassstraw.Forcarrier-freeNa2^35SO4treatment,78%,70%and64%of^35SappliedwerefoundinCa(H2PO4)2-extractaleSfraction,4%,5%and7%inslowlysolubleinorganicS,11%,15%and18%inC-O-S,5%,7%,and6%inC-bondedS,and5%,7%and6%inunidentifiedorganicS120daysafterincubationinblacksoil,cinnamonsoilandchestnutsoil,respectively.Mostof35Suptakebyplantscamefromextractable35SO4^2-,andlittlefromC-O-^35SandC-bonded^35S,Inthetreatmentwith35S-labeledstraw,51%,46%and36%of35SincorporatedwerefoundinCa(H2PO4)2-extractableSfraction,7%,6%and7%inslowlysolubleinorganicS,13%,15%and18%inC-O-S,8%,8%and6%inC-bondedS,and18%,25%and35%inunidentifiedorganicSattheendofincubationinabove-mentonedthreesoils,respectively.HigheravailabilityofC-O-35S,C-bonded35Sandunidentifiedorganic35Sfrom35S-labeledstrawwasobservedin35S-labeledstrawtreatmentcomparedtocarrier-freeNa2^35SO4treatment.

  • 标签: 北方 高地 土壤缺硫 ^35S 有效性 硫转化
  • 简介:Inthepresentpaper,wehaveconsideredtheapproximationofanalyticfunctionsrepresentedbyLaplace-Stieltjestransformationsusingsequenceofdefiniteintegrals.WehavecharacterizedtheirorderandtypeintermsoftherateofdecreaseofEn(F,b)whereEn(F,b)istheerrorinapproximatingofthefunctionF(s)bydefiniteintegralpolynomialsinthehalfplaneRes≤b〈a.

  • 标签: Laplace-Stieltjes transformation ANALYTIC function order type
  • 简介:Inperiodiccellularstructures,novelpatterntransformationsaretriggeredbyareversibleelasticinstabilityundertheaxialcompression.Basedonthedeformation-triggerednewpattern,periodiccellularstructurescanachievespecialmechanicalproperties.Inthispaper,thedesignedarchitecturematerialswhichincludeelastomermatrixescontainingemptyholesorfilledholeswithhydrogelmaterialaremodeledandsimulatedtoinvestigatethemechanicalpropertyoftheperiodicmaterials.Byanalyzingtherelationshipbetweennominalstressandnominalstrainofperiodicmaterial,andthecorrespondingdeformedpatterns,theinfluenceofgeometryandshapesoftheholesonthemechanicalpropertyofarchitecturematerialisstudiedinmoredetails.Wehopethisstudycanprovidefutureperspectivesforthedeformation-triggeredperiodicstructures.

  • 标签: 力学行为 周期结构 周期性结构 凝胶材料 型模 变形模式
  • 简介:在这篇论文,一个转变模型说出SARC(有限制状况的静态过滤器的调整)被介绍,它在理论和试穿更实际、更严密任何旋转角参数。转变过程被划分成4步:①t他原版和目标坐标能与错误被认为是观察;②严密公式第一被推出以便由四个普通的点的使用计算转变参数的第一近似,转变方程被线性化;③由SARC模型④计算七个转变参数的最可能的值和变化表明SARC的有效性,一个例子被给。

  • 标签: SARC模型 三维动态坐标 转换参数 转换方程
  • 简介:Thetraditionaleconomicgrowthmodeof"threehighsandonelow(highinput,highconsumption,highpollutionandlowefficiency)"makesChinagettheachievementsofeconomicdevelopmentandprosperityduringthereformandopeningupwithmorethan30years,butbehindthisextensivemodeofeconomicgrowthisexcessiveconsumptionofnaturalresourcesandalotofgreenhousegasesemissions,thisnotonlylimitsthegrowthrateofChina’seconomy,butmakesatremendousnegativeimpactontheenvironmentwhichisdifficultforustosurvive.Therefore,realizingindustrialstructurelow-carboneffectivelyanddevelopingalow-carboneconomycharacterizedby"low-power,lowconsumption,lowpollutionandlowemissions",becomeChina’snewtargetselectiontotransformeconomicdevelopmentmodeandrealizethegoalofoptimizationandupgradingofindustrialstructureandsustainabledevelopment.

  • 标签: INDUSTRIAL structure low-carbon TRANSFORMATION LOW
  • 简介:Wang:Ibelievethattheabovecomparisonsofthetwo"warsonIraq"areexcellent.TheUnitedStateshasmadeitclearthatitspresentmilitaryactionsareaimingat"topplingSaddam."ItseemsthatWashingtonhaslongmadepreparationsfortheactions,andwilldomoreinthefuture.

  • 标签: 旧物
  • 简介:Thequadratictransformationmethodisproposedtoestimatethetrabecularspacing(Tb.Sp),animportantindexforosteoporosisdiagnosis.Theperformanceofthisalgorithmwasinvestigatedbyscattermodel,two-dimensionfinitedifferencetimedomain(2D-FDTD)simulationandinvitroexperimentsofbovinecancellousbonespecimens.Comparingwiththeotherfourmethods—autoregressivecepstrum(AR),adaptivefilter-autoregressivecepstral(AFAR),inversefilter-autoregressivecepstrum(InvAR),andsimplifiedinversefiltertracking(SIFT),quadratictransformationismuchmorestableandaccurate.TheresultsdemonstratedthatquadratictransformationisagreatalgorithmforTb.Spestimation.

  • 标签: 变换算法 估计 梁间距 时域有限差分 自适应滤波器 逆滤波器
  • 简介:I'mverypleasedtobehereatthissidemeeting,China'sGreenTransformation:Efforts,PracticesandFuture,co-sponsoredbyACCA21andUNDP.SincetheUNConferenceonEnvironmentandDevelopmentin1992,peoplearoundtheworldhavemadenumerous

  • 标签: 中国 可持续发展 绿色经济 联合国 环境
  • 简介:Basedontheprinciplesofthevisualcryptographyandthelawoflargenumbers,theunexpandedsharesaregeneratedduringtheprocessesofembeddingandverifyingthehiddenwatermark.Thewatermarkembeddingisdoneinthefrequencydomain,whichcanbedecodedbythehumanvisualsystem(HVS)withoutthenecessityofanycomplicatedcomputationandthehelpoftheoriginalimage.Experimentalresultsindicatedthatourmethodhadagoodrobustnessondarkening,lightening,blurring,sharpening,noise,distorting,jitter,jointphotographicexpertsgroup(JPEG)compression,andcropattacks.

  • 标签: 视觉密码学 水印 小波变换 人类视觉系统 原始图像 大数定律
  • 简介:泥土矿物质捱过是到植物的营养素的来源。Palygorskite是通常发生在干旱区域的土壤和沉积的一种Mg富有的含纤维的泥土矿物质。尽管许多研究检验了为palygorskite的形成和稳定性要求的环境条件,在根地区的这种矿物质的转变的信息(或根围)农业庄稼被限制。这研究在小麦和燕麦的根围探索了palygorskite转变的可能性并且比较了这些庄稼的能力从palygorskite提取结构的Mg。庄稼在从Hamadan区域,伊朗和佛罗里达palygorskite由沙的混合物组成的壶被栽培,与提取的水灌溉了,并且与完全或Mg免费的滋养的答案对待。在100d以后,由庄稼的Mg举起被测量。在每个壶的泥土大小的粒子也与沙被分开并且通过X光检查衍射(XRD)被分析。粒子的X光检查模式与纯palygorskite粒子的相比(在耕作前)。结果证明palygorskite能在与Mg免费的滋养的答案供应的壶为小麦的生长提供足够的Mg。尽管有由从palygorskite结构的两植物的镁举起,显示palygorskite的转变的可检测的山峰都没被XRD认出。在山峰紧张的1.05nm的减少为包含palygorskite的壶是更明显的并且比为与完全的滋养的答案灌溉的壶与Mg免费的滋养的答案灌溉了。尽管在山峰紧张的减少比小麦为燕麦是更大的,显示由燕麦捱过的更大的palygorskite,由燕麦的Mg举起是低的由观察的缺乏症状证实了。

  • 标签: 转化能力 坡缕石 吸收率 燕麦 小麦