学科分类
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241 个结果
  • 简介:TheBeijingJingchuIndustryGeneralCo.isafamousenterpriseproducingkitchenutensilsandhouseholdelectricalappliances.TheJingchubrandenergysavingoilandsmokeexhausterproducedbythecompanyismadeofimportedmaterialswithoverseasadvancedtechnologyforproductionandmeasurement.Allindexeshavereachedthedomesticadvancedlevel.Theexhausterisequippedwithan

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  • 简介:Regeneratedcellulosefilmswithwater-resistancewereobtainedbyanimprovedmethodofpreparingcellulosecuoxamsolutionfrompulpsofagriculturalwastes(linters,wheatstraw,reedandBamao).Experimentalresultsshowedthatthemechanicalpropertiesofboththedry.andwetfilmswereexcellent.DatafromIR,SEMandtensilestrengthmeasurementsimpliedthatthesignificantimprovementofwater-resistanceofthefilmswasduetothecohesionbetweenthethinTungoilcoverswithhydrophobicityandtheregeneratedcellulosefilms.Thefilmswerecompletelybiodegradedafterbeingburiedinsoilfor100days.Thetransmittanceofthefilmsderivedfromlinterandreedinvisiblebandrangewere80-90%.

  • 标签: Regenerated CELLULOSE film Cuoxam Tong oil
  • 简介:1CurrentStatusandForecastonSupplyandDemandforOilinChina1.1ChineseoiltradebalanceChina'sdemandforcrudeoilhasincreasedsharplysincethe1990's.From1991to2000,theconsumptionofChina'scrudeoilincreasedby6%ayear,buttheoutputstilllaggedfarbehindthedomesticneed(SeeTable1).

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  • 简介:这研究的目的是表明杆菌SP3的基本特征并且在不同原油上评估它的效果。紧张SP3是在华东从Shengli油田的一座水库被孤立的能动的、克积极的、生产孢子的杆。紧张SP3的Thecells在5.5-8.5的氢指数范围在高温度成长了直到58℃。grewfacultatively拉紧SP3并且能使用不同器官的底层,并且生产一些代谢物如此的as4-hydroxy-4-methyl-2-pentanone,methyl-2-nitrogen苯并且1,2-benzenedicarboxylic酸bisest嗯。实验室研究证明了紧张变换了并且降级不同部件并且变化物理并且原油的化学性质。紧张SP3降级了原油和原油上的细菌的生长导致了芳香的烃,树脂和沥青质的损失。原油的简历变换将在更轻的烃和全面再分配导致丰富浸透烃。有原油的微生物的相互作用是可变的,取决于微生物引起的种类和原油的化学成分。

  • 标签: 芽孢杆菌SP3 原油 生物转化 生物降解
  • 简介:Inrecentyears,thefrequentoccurrencesofmarineoilspillshavealreadybecomeoneofthemajorreasonsthreateningthemarineecologicalsafetyofChina.Intheeventofoilspill,oth-erthantakingthenecessaryemergentmeasuresaimingspecificallyatthedamagetothemarineecologyandenvironment,usinglegalmeanstoassurethatthedamageliabilitiesarebornebytherespon-siblepersonstoprotectthenationalinterestsarealsoveryneces-sary.Thispaperadvancesfiverecommendationsregardingthedevelopmentofasystemforecologicallegalcompensationsfromthestandpointofthecurrentstatusoflegislationandexecutionofthelawsoncompensationofoilspillpollutingmarineecosystem.Thesefiverecommendationsinclude:determinationofthestatusofjuristicactioninmarineecologicalandenvironmentalcompen-sationsinaccordancewiththelaws,determinationofplaintiffofmarineecologicalandenvironmentalcompensationsinaccordancewiththelaws,determinationofthefourbasicprinciplesinthele-galactionsofmarineecologicalandenvironmentalcompensationsinaccordancewiththelaws,determinationofassessmenttechnicalstandardofmarineecologicalandenvironmentaldamagesinac-cordancewiththelaws,anddeterminationofthescopeofmarineecologicalandenvironmentalcompensationsinaccordancewiththelaws.

  • 标签: 海洋生态环境 环境补偿 溢油污染 损害赔偿责任 法律规定 中国
  • 简介:ZnOnanoparticleswithanaveragesizeof125nmwerepreparedviahomogeneousprecipitationmethodandwerecharacterizedbySEM.Theproductsweresurface-modifiedbythesurfactantSDS.Surface-modifiednanoparticleswereaddedatamassratioof1.0%,2.0%,3.0%,and4.0%,respectively,inbaseoilandtheirfrictionandwearbehaviorswereevaluatedonaMRS-10Dtypefour-ballweartester.Afterfour-ballweartests,themorphologyoftherubbingsurfaceswasevaluatedwithmetallographicmicroscope.ItwasrevealedthatthemodifiednanoZnOhadexcellentbehaviorforimprovinganti-wearpropertyandfrictioncoefficient,whichcouldgreatlyreducethefrictionofmachineparts.

  • 标签: 纳米氧化锌 表面改性 基础油 润滑性能 ZNO纳米粒子 摩擦磨损行为
  • 简介:SudanKhartoumRefineryCo.hasselectedauniqueroutefeaturingdelayedcokingofcrudeinconnectionwiththehighlysourandhigh-calciumheavycrudeextractedfromSudaneseoilblockNo.6.Thecrudeoilafterpretreatmentforcalciumremovalissubjectedtocokingforremovalofacidsandmetalswiththecokerproductsbeingfurtherprocessed.ThecrudeoilextractedfromSudaneseoilblockNo.6containsashighas13mgKOH/gofcrudeinadditiontoacalciumcontentof1600ppm.Thisarticlemakesananalysisonproblemsrelatedwiththeoperationofcommercialdelayedcokingunitforprocessingofhighlysourcrudeandbringforthmeasurestosolvetheseproblems.Theliquidyieldresultedfromcokingofcrudeoilcanreach82m%,andthepetroleumcokecanmeetthequalityrequirementforclass3Bpetroleumcoke.

  • 标签: 石油 炼制工艺 含硫量 加工工艺
  • 简介:Theslurry-bedhydrocrackingofKaramayVGOwithwater-solubledispersedcatalystwasstudiedandthecatalystafterbeingseparatedfromthereactionproductswasanalyzedbyusingLRS,XRDandXPStoidentifythecrystalstructureofthecatalyst.Inthispaper,thecatalyticfunctionsofmolybdenum,nickelandironwerestudiedrespectivelyduringtheslurry-phasehydrocrackingwhileusingdiphenylmethaneasthemodelcompoundandVGOfromKaramaycrudeasthefeedstock.Thetestresultsshowedthat,duringtheslurry-phasehydrocrackingofheavyoil,themetalsulfidesenteredintochemicalreactionswiththefreeradicalintermediateH·formedonthecatalystsurface.Thefree-radicalintermediateH·formedonthecatalystsurfacecouldreactwiththefree-radicalsofbigmoleculesandcouldsuppresscokedeposition.

  • 标签: slurry-bed dispersed HYDROCRACKING
  • 简介:Theaimofthisstudyistoreportandanalyzethefactorsrelatedwithearlieroccurrenceofsiliconeoil(SO)emulsificationinpatientsunderwentparsplanavitrectomyandSOinjectioninourhospital.WeretrospectivelyreviewedconsecutivecaseseriesundergonebothSOinjectionandremovalinourhospital,and182oneswereeligible.Possiblerelatedindependentfactorsincluded:maculastatus(on/off),concomitantphacoemulsificationwiththesurgeryofSOtamponading,concomitantstatusofproliferativevitreoretinopathy,combinedsurgeryofretinotomy,timetohaveemulsification(<6mo/≥6moafterprimarySOinjection),routeofSOinjection(anterior/posterior),lensstatus(aphakic/pseudophakic/phakic),anesthesia(local/general),brandsandtypeofSO,with/withoutepiscleralcryotherapy,with/withouthypertension,with/withoutdiabetes,with/withoutintraoperativeuseoftriamcinoloneacetonide.ThestudyrevealedthatbrandandtypeofSOwasthesignificantfactorrelatedwithearlieremulsificationofSO.Furtherstudywaswarrantedtofindouttheunderlyingcauses.

  • 标签: early EMULSIFICATION PARS plana VITRECTOMY SILICONE
  • 简介:Theoperationprincipleofanovelportableoilingredientinstrumentisintroduced.Usingthetheoryoffluorescencemeasurement,thisinstrumentcancarryoutfastandconsecutivein-situdetectionofoilingredientinseawater,confirmingfastandcorrectlythesituationofoilcontaminationsuchastheconcentrationandthearea,etc.Thelowestdetectableconcentrationfortheinstrumentis1×10-8g/mlwiththeprecisionoflessthan3%.Theresultsofexperimentandpracticeshowthatthissystemhaswellwater-sealedcharacteristicandrepeatability.

  • 标签: 荧光测量 激发光谱 荧光光谱 光纤 石油 成分仪器
  • 简介:这份报纸在Paleogene的Shahejie形成在Dongying消沉在页岩水库上被进行。基于详细核心描述,摇薄节,擦亮的氩离子,扫描电子显微镜学(SEM)分析,CT扫描和碳氧同位素的测试,inter-laminar的形成机制断裂(或缝接)并且他们的发展条件被diagenetic进化特征和水库空间进化特征的全面分析讨论。结果证明在Dongying消沉的把压成薄片的合成模式被把压成薄片的方解石和泥土矿物质的垂直分发统治。形成对照到传统的理解,inter-laminar破裂的发展度低得多。没有框架矿物质,和微缝接是的先存在的很好连接的毛孔或水平过压,在层之间的纯液体不能存在液体移植的有利路径。从inter-laminar破裂起源机制和它的进化的点,所谓的缝接,比那烃代提起了毛孔压力并且导致了平行microfractures的传统的理解是更多建筑群。但是inter-laminar破裂与那有小关系迭合是否被开发或床上用品边界是清楚的。事实上,页岩水库inter-laminar破裂不是严密骨折。他们被先存在控制内部小粒的毛孔(或缝接)或溶解毛孔,散布了碳酸盐薄片边界并且被以后的超级压力连接,溶解和渗出物力量。并且开发条件是埋葬深度(比3000m大)并且Ro值(>0.6%)。它的起源和进化的讨论有重要石油优化水库片断和有利目标区域选择上的地质的意义。

  • 标签: 页岩水库 ? 迭合 ? inter-laminar 断裂 ? 成岩作用 ? Dongying 消沉 ? Paleogene ?
  • 简介:<正>HEATFLOWANDACCUMULATIONOFOIL/GASPOOLSINORDOSBASIN,NWCHINASunShaohua(ChangshaInstituteofGeotectonics-AcademiaSinica,Changsha,410013,Hunan,China)heatflowfeild,petroleum,Ordosbasin.ThispaperfocusesontheheatflowfieldofOrdosBasin,NWChina,bycombin-ingexperimentmethodofU,KandTh,heatgeneration,heatconductivity,etc.Inthelightofthecomprehensivestudyoftheexperimentaldataandlayerdivisionsofthecrust,theaverageheatofMohoinOrdosBasinis0.37HFU,muchlowerthanthatinNorthChinaBasin(0.64-0.97HFU)orthatinSongliaoBasin(1.19HFU),NEChina,showingthecharacteristicsoftheheatflowfieldofthestablecratonicbasin.Theaverageheatflowonthecrustsurfaceofthebasinisabout1.44HFU,similartothatinMesozoicdiwaorogenyoftheworld,probablyindicatingthatthediwastageissoonexpectedinthebasin.TheinterfacesfromMohotothesurfaceinOrdosBasinhavethesameheatflowdistribution-stylewithth

  • 标签: HEAT FLOW feild PETROLEUM ORDOS basin.
  • 简介:RecentlyalowcostcookingdevicefordevelopingandemergingcountrieswasdevelopedatKITincooperationwiththecompanyBoschundSiemensHausgerteGmbH.Afterconstructinganinnovativebasicdesignfurtherdevelopmentwasrequired.Numericalinvestigationswereconductedinordertoinvestigatetheflowinsidethecombustionchamberofthestoveundervariationofdifferentgeometricalparameters.Beyondtheperformanceimprovementafurtherreasonoftheinvestigationswastoratetheeffectsofmanufacturingtoleranceproblems.InthispaperthenumericalinvestigationofaplantoilstovebymeansofRANSsimulationwillbepresented.Inordertoreducethecomputationalcostsdifferentmodelreductionstepswerenecessary.Thesimulationresultsofthebasicconfigurationcompareverywellwithexperimentalmeasurementsandproblematicbehaviorsoftheactualstovedesigncouldbeexplainedbytheinvestigation.

  • 标签: 数值研究 燃烧室 油炉 植物 流量 发展中国家
  • 简介:IntroductionLightningcancausegreatdestruction.AccordingtotherecordinthenorthernChina,morethan150lightningstrokesoccuronapowersystemannually.Highvoltage(millionsofvolts)andlargecurrent(hundredsof-kA)associatedwithlightning,willdamagepropertyandevenkillpeopleandlivestocks.Itwillbeverydangerousifalightningstrokestrikesoildepotofpowerplantorsubstation.Inaddition,thehighvoltageinducedbytheelectrostaticchargegeneratedduetooilflowingwillprobablycausedamageunlesstheelectrificationhasbeenlimitedanddrainedoff.

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  • 简介:Theoysters(Saccostreacuculiata)werecollectedfromfourstationsaroundXiamenIs-land(LunduPort,XinglinBay,Tong'anBay,Huangcuo).Therelationbetweenthelevelofpetroleumhydrocarboninwholetissueandthecontentsofglutathione(GSH),theactivityofselenium-dependentglutathioneperoxidase(Se-GPx)andglutathioneS-transferase(GST)indigestiveglandandgillwereinvestigated.Theresultsshowed:(1)Thecontentsofpetroleumhydrocarboninoystercollect-edfromfourstations(LunduPort,XinglinBay,Tong'anBay,Huangcuo)were380.68,112.34,27.31,20.37μg/gwetweight,respectively;(2)theactivityofSe-GPxandGSTindigestiveglandwaslowerthanthatingill,andthecontentofGSHseemedreversibly;(3)amongthefourstations,bothSe-GPxandGSTactivityofdigestiveglandandgillinSaccostreacuculiatasampledfromthefourstationsshowedagoodcorrelationwithwholetissuepetroleumhydrocarbon,couldbeasbiomarkersofseaoilpollution.

  • 标签: 海洋石油污染 GSH GST 牡蛎 碳氢化合物 谷胱甘肽