简介：由生命周期评价(LCA)的申请方法论，这份报纸估计生产的环境影响和在中国在电的车辆使用的拖拉马达的处理。结果证明拖拉马达生产和处理的全部的精力使用，标准排出物和温室气体(GHG)排出物是大约2,899，MJ，4.5，kg并且259.5，kg每分别地交通。在调整排出物之中，SOx排放由全部的质量评价第一，由公司，PM10，没有x，PM2.5，和不稳定的有机化合物(VOC)列在后面。为大多数精力消费和排出物的马达材料生产阶段报道，由集会阶段和end-of-life处理列在后面舞台。在这研究，环境表演分析为材料生产阶段被扩大到在第二等的材料和主要材料的使用之间的比较。用100%，第二等的材料与百分之百主要的材料的使用相比在GHG排出物在精力消费，在调整排出物的49.8%减小，和49.3%减小导致52.9%减小，这被发现。

简介：FivethermophilicstrainsthatcandegradecellulosewereisolatedfromthecompostofawastemanagementinGuangzhou,China.Sinceoneofthemdegradedcelluloseeffectively,itwaschosenasthestudystrain.Basedonitsmorphology,spores′susceptibilitytoheat,cellwallcompositionandothercharacteristics,theorganismwasclassifiedasThermomonosporafusca.Conditionsforproductionofcarboxymethylcellulase(CMCase)wereexamined.TheoptimaltemperatureandpHvalueforenzymeproductionwere50℃and10.5,respectively.Cellulosicmaterialsandeasilymetabolisablecarbohydratesservedascarbonsourcesforthegrowthofthestrain.Onlycotton,avicel,carboxymethylcellulose(CMC)actedaspotentinducersfortheproductionofcellulasesbythisstrain.Despiteexcellentgrowthoneasilymetabolisablecarbohydrates,onlyconstitutivelevelsofcellulaseswereproduced.TheoptimalcarbonandnitrogensourcesforCMCaseproductionwerecottonandsoybeanrespectively.Thehighthermostability,widepHstability,andcheapnitrogensourceshowwellpotentialuseforcompostingtreatmentandcommercialdetergents.

简介：Theextractivereactionprocessofoxygen-workingsolution-waterthree-phasesystemfortheproductionofhydrogenperoxidebytheanthraquinonemethodwasinvestigatedinasieveplatecolumnof50mmininternaldiameter.Theoxidationreactionofanthrahydroquinoneintheworkingsolutionwithoxygenandtheextractionofhydrogenperoxidefromtheworkingsolutionintoaqueousphaseoccurredsimultaneouslyinthecountercurrentmode.Theagitatingeffectcausedbygaseousphasemadethedropletsofthedispersedphasebecomesmaller,thus,increasingtheliquid-liquidinterfacialcontactareasandresultingintheimprovementofthemasstransfervelocity.Resultsshowedthatthegas-agitationhadabeneficialeffectontheextractionofhydrogenperoxidefromtheworkingsolutionintotheaqueousphase;theconcentrationofhydrogenperoxideintheraffinatedecreasedwiththeincreaseofthegaseoussuperficialvelocities;andtheconcentrationofH2O2intheraffinateincreasedwiththeincreaseofthedispersedphasesuperficialvelocityatthesamesuperficialvelocityofthegaseousphase.IntheG-L-Lextractivereactionprocess,withtheincreaseofthegaseoussuperficialvelocities,boththeconversionoftheanthrahydroquinoneoxidationandtheextractionefficiencyofhydrogenperoxidefirstincreasedsignificantly,thenincreasedgradually.

简介：Asakindofaerobicbacteria,Saccharopolysporaspinosaexhibitsahighdemandforoxygen.Inthefermentationprocess,themethodsofincreasingventilationandimprovingagitationspeedareusuallyadoptedtoachievehighervaluesofdissolvedoxygen.Thesemethodsdecreasetheefficiencyofspinosadbiosynthesis.Inthisstudy,animprovedreactorwasdesignedtosolvetheseproblems.Theexhaustgasrefluxdevice,impellers,andbaffleswereimproved.Furthermore,weestablishedthekineticmodelsforthecellgrowth,substrateconsumptionandspinosadgenerationinbatchfermentationprocess.Thesimulationresultswereingoodagreementwiththeexperimentaldata.Spinosadproductionreached583.86mg/Lafteremployingthesuitablefeedingstrategybyfed-batchfermentationintheimprovedreactor,whereasitwasonly157.01mg/Lbeforeoptimization.Themethoddescribedcanprovideinsighttostrengthenspinosadproductionandcanbeextendedtotheculturingprocessoffilamentousaerobicbacteria.

简介：MicrocystisaeruginosaFACHB905被用作一个模型有机体在生长和microcystin(MC)上学习小水簇(SWC)的效果有毒的cyanobacteria的生产。结果证明SWC能刺激Microcystisaeruginosa的生长，它在一个30-d处理以后导致了增加的房间数字和更高特定的生长率。细胞形态学显示Microcystisaeruginosa处于生长的一个更好的状态，并且在SWC划分比在正常水聚类的是容易的更多。在在Microcystisaeruginosa的10d的起来调整的MC合成和渗出，和细胞内MC满足的SWC处理随后在第20天以后减少了。而且，细胞的光合的颜料内容被SWC暂时刺激。一个可能的原因是SWC由支持光合作用刺激了生长，而增加的MC生产与颜料内容相关。

简介：众所周知，口语是BEC四个单元中挑战性较大的一部分，并且口语考试的难度随着等级的提高而加大。BEC口语考试分为三部分。第一部分是考生与考官的交流，着重于个人情况，比如学习工作，兴趣爱好。这一部分必须充

简介：

简介：本文分析了计算机网络管理同人工智能领域的现状和困难，提出了基于计算机支持协同工作ＣＳＣＷ的原理，结合ＷＷＷ及Ｊａｖａ等新技术的新型网络智能管理模型ＡＧＩＭＡ．ＡＧＩＭＡ将传统网管以信息分布为中心的模式转变到以计算分布为中心的模式，由智能代理群整体向网络管理员提供智能能力．ＡＧＩＭＡ的实现充分体现了开放性，可扩展性，主动适应性和人机界面友好性．作者详细分析了智能代理的特性，对比人类社会模型，得出了网络智能必须是人机协同的结论．

简介：作为在bioethanol生产的设备的一关键片，煮坦克通常被用来保证液化的一致性。在这份报纸，我们建议煮坦克保证在一个大规模过程作为伪塞子流动知道的淀粉泥浆流动的一种类型的一种新奇类型。在流动地的分析，我们使用了计算液体动力学(CFD)。模仿液体固体二阶段的流动，我们基于粒子动力学选择了一个Euler-Euler模型。我们在流动地上调查了几个关键结构的参数的效果。结果与12,800为一辆坦克显示出那?在高度的公里并且1000?在从0潰楳楴湯?瑳畲瑣牵?湡??晲捡?潭灲潨潬祧戠?的直径，优化入口试管角度和入口试管直径范围的公里?慲?楤晦慲瑣潩?攠敮杲?楤灳牥楳敶堠爭祡猠数瑣潲敭牴??卄?堠爭祡瀠潨潴汥'虪箿e数瑣潲捳灯?猠慣湮湩?汥'虪箿珱＾驿麙盏?匨??琠慲獮業獳潩?汥'虪箿珱＾驿麙盏??卄攠敬敭瑮污洠灡楰杮吗？？

简介：Lowpoweraddercircuits,SERF,10T-Ⅰ,10T-Ⅱ,10T-Ⅲandacomplementaryadder(28T)atphysicallayoutlevelareevaluated.Simulationsbasedontheextractedaddercircuitlayoutsareruntoassesshowvariouscircuitsetupscanimpactthespeedandpowerconsumption.Inaddition,impactsofoutputinvertersonthecircuitperformanceofmodifiedSERFand10Taddersduetothresholdlossproblemarealsoexamined.Differencesamongtheseaddersareaddressedandapplicationsoftheseaddersaresuggested.

简介：Inthisstudy,Nocolokeutecticflux,usedwidelyintheprocessofthebrazingofaluminumanditsalloy,waspreparedbythereactionbetweenAl(OH)3/KOHresolutionandHF.AseriesofKF-AlF3eutecticproductionsatvariousreactiontemperatureswereprepared.Themeltingpointsoftheproductsweremeasuredbydifferentialthermalanalysis(DTA),andthecompositeswerecharacterizedbyX-raydiffraction(XRD).TheresultssuggestthatthetemperaturecontrolisimportanttoproduceanidealfluxconsistingofK2AlF5,H2OandKAlF4,withalowmeltingpointof560℃,whichissuitableforthebrazingofaluminumanditsalloyasthealuminumfluxes.

简介：

简介：

简介：用碳纤维做的射弹合成材料壳和金属弹头以336m/s，447m/s和517m/s的速度渗透具体目标。角度在之间目标表面和射弹轴垂直是0°和30°。具体目标的厚度是200公里，耐压强度是30MPa。试验性的结果显示合成材料结构的力量高。没有纤维分离和破裂，合成射弹能通过具体目标。百分比充满在合成材料射弹是18.5%。它作为金属射弹的在附近两次，如果金属的密度作为7.8g/cm3被拿。与金属射弹作比较，低密度，合成材料能减少的高张力射弹重量，改进雷管的费用重量比率并且提高破坏粉末。

简介：本文研究了过滤式阴极电弧沉积方法获得的类金刚石薄膜．实验研究电弧的稳定性和探针电流与沉积参数的关系，并系统研究了膜层的性能．膜层的摩擦性能也得到了研究．

简介：Thenon-lineardynamicmodelissetupofonetypeofhigh-speedpaintingautomizorwithgassupportingsystem.Thestabilityofmotionanddynamicresponseofthegaspaintingautomizorsystemarestudiedoverarelativelywiderangeofrotatingspeedbynumericalanalyticmethod,thecriticalvelocityunderworkingconditionisfound,androtatestabilityandcriticalconditionarediscussedintheory.Furthermore,therangeofthecriticalparameterofthesystemwhenHopfbifurcationoccursandthelawbetweenaxistraceandbearingclearanceareacquired,too.

简介：为由ccpA异种杆菌的核黄素生产的氮来源要求敏锐24A1/pMX45用线性回归被优化。最佳的中等部件考虑作为碳来源包括了8%葡萄糖，2%酵母粉末，0.05%MgSO_4吗？氮来源的7H_2O，和四种类型：0.1%酵母摘录，2%大豆粉末，1%玉米原生质，并且0.2%(NH_4)在饮料烧瓶的_2HPO_4测试。预兆的椭圆体被用于为核黄素生产和葡萄糖消费在最佳的层次下面决定反应价值。氮来源的四种类型的最佳的集中能补救铵吸收变节ofccpA异种。在最佳的条件下面，到超过5.0g/Land8%葡萄糖的核黄素收益增加能在60h以后完全被消费。

简介：Thispaperpresentsaninvestigationonstrengthofcementdeepmixing(CDM)mixture.Fourtypicalworksofoffshoreorland-basedprojectsareintroduced.Withsamplesfromtheseprojectsandlaboratorytests,statisticalanalysisismadeontheincrementlawofthestrengthofcement-soilmixturewithdifferentamountofcement,andstrengthsunderdifferentworkingconditionsarecompared.Itisfoundthattheamountofcementinthecement-soilmixtureiscloselyrelatedtotheunconfinedcompressivestrengthofthemixture.Attheageof90d,theunconfinedcompressivestrengthofthecement-soilmixtureincreasedby0.054Mpa-0.124Mpawitheachcementincreasing10kg/m3inthecement-soilmixture,averagelyincreasedby0.085Mpa,whilethatattheageof120dincreasedby11%incomparison.Thequalityofthecement-soilmixtureshouldbecomprehensivelyevaluatedinaccordancewiththetrimmedaverageofstrength,coefficientofvariationandrockqualitydesignation(RQD)indicatorsofsamplingratio.

简介：BasedonthedesiltingresearchofoneschedulingprojectinthesouthwestofChina,themethodofsettinggriddesiltinggallerybeforethedesiltingtunnelisputforwardtoexpandthescopeofthescouringfunnelbeforethedamandsolvetheproblemofsedimentdepositionatthepowerstationwaterintake.Theexperimentalresultsshowthat,inthedesignofagriddesiltinggallery,thewidthofthegridgalleryshouldnotbesmallerthanthatofthedesiltingbottomintake,thesizeofthegridorificeshouldbeintherangeof1.5,m—2.0,malongtheflowdirection,andthegridspacingshouldbe3—5timesthesizeofthegridorifice.Thedischargingabilityofthedesiltingbottomintakewilldecreaseafterthegriddesiltinggalleryisadded.Theaverageofthedecreaseratesisabout5%—10%.Thescouringfunneldrawsinthelongitudinaldirectionbeforethedamobviouslyaftertheconstructionofthegriddesiltinggallery.

简介：Theinfluenceofexternallowfrequency(0-100Hz)vibrationonthetip-sampleinteractioninSPMisthemainconcernofthispaper.Aconcept,vibrationrejectionratio(VRR)proposedbyThompsonetal,wasinvestigatedtheoreticallyandexperimentally.Aconcisetheoreticalbackgroundwasintroduced,avibrationstimulatingandmeasuringsystemforSPMwasbuiltup,andanexperimentalresearchoftheinfluenceonSPMVRRwascarriedoutwithdifferentSPMprobes,samples,tippre-loadsandopen/closeloopsoftip-sampleinteraction.ItwasprovedbothintheoryandexperimentthatSPMVRRhadcorrelationswiththespringconstant,theairdampingconstant,theeffectivemassofthecantilever,thecontactspringconstantandthecontactdampingconstantbetweentipandsample.SPM'svibrationrejectingabilitycanbeimprovedbylongercantileverprobe,softersamplesurface,greatertippre-load,andclose-loopcontrolfortip-sampleinteraction.Moreattentionshouldbepaidtoapropercombinationoftheaboveparameters.