共查询到20条相似文献,搜索用时 62 毫秒
1.
1 IntroductionInthispaper ,weconstructanewthreefieldvariationalformulation ,whichalsoregardsstress ,velocityandpressureasvariables ,forthequasi Newtonianflowploblem ,wediscussitsnon conformingfiniteelementapprox imation ,onlybyassumingaLBBconditionbetweenthe… 相似文献
2.
Fatty acidbindingproteins (FABPs)arenon enzymaticcytoplasmicproteinsoflowmolecularweight ( 1 4~ 1 5kD)whichcanbefoundinawidevarietyofmammaliantissues[1] .Atpresent,theFABPfamilyiscomposedofatleastninedistincttypesofFABP ,eachtypeshowingacharacteristicpatternofti… 相似文献
3.
Theelectricfielddiffusionsinun steadyandsteadystatesareinvestigatednumericallyandexperimentallyforasuperconductingslab .Weheretemporarilycallfluxlinesdrivenbyexter nalcurrentincreasingwithacertainratedI/dtasun steadystatewhilethestatewithdI/dt =0assteadys… 相似文献
4.
1 IntroductionForthestationaryLadyzhenskayaModel,wepresentandanalyzeastabilizedfiniteelementmethodwhichiscapableofdealingwiththenonlinearconvectiveanddiffusivetermsandallowingtheuseofarbitrarycombinedfiniteelementspaces .Theexistence ,uniquenessandoptim… 相似文献
5.
Chaoticsystemindicatesthesensitivedependenceoninitialconditions.Theslightdevia tionofinitialconditionscanbeamplifiedtotheremarkablydifferentresults .Theunpredictablenoise likenatureofchaoticsignalspromisesthepotentialapplicationformaskinginformationsig… 相似文献
6.
7.
王凤琼 《四川大学学报(自然科学版)》2000,34(6):944-945
InthisnoteLdenotesacompletelydistributivelatticewithanorder reversinginvolution .Forlatticetheoreticconceptswereferto [1 ].AnL fuzzytopologyonasetXisasubsetΔ LXwhichisclosedwithrespecttofiniteinfsandarbitrarysups.ΔiscalledstratifiedifΔcontainsalltheconsta… 相似文献
8.
Recently ,theresearchofartificialsuperlatticeshasbeenahottopicincondensedmatterphysicsandmaterialsfield .Before 1 984,researchworksonsuperlatticesweremainlyfocusedonperiodicstructures .Thediscoveryofquasicrystalhasopenedupanewfieldincondensedmatterphysicsa… 相似文献
9.
赵兰香 《科技导报(北京)》1995,(4):44-46
产学研合作的机制分析AnalysisonMechanismofCooperationamongEnterprises,InstitutionsofHigherLearningandScientificResearchInstitutions¥//赵兰... 相似文献
10.
Soundspeedintheoceanmaybeaffectedbyinternalwave ,mesoscalestructure ,etc .Thisintro ducesaperiodicrange -dependentperturbationoverthesoundspeedintheraysysteminunderwateracoustics[1,2 ] .Theinfluenceofthisperturbationontheraybehaviorwasstudiedbasedontheparabo… 相似文献
11.
详细介绍了Windows95的启动机制,并对Windows95的配置文件Ms-dos.sys作了全面的论述,最后给出了一般微机上Msdos.sys设置. 相似文献
12.
0 INTRODUCTIONLandusechangemayinfluenceavarietyofnaturalandecologicalprocesses ,includingsoilnutri ent,soilmoisture ,soilerosion ,landproductivityandbiodiversity[1] .Winderosion ,watershortage ,salineandlanddegradationmenacesseriouslyagriculturaldevelopmentin… 相似文献
13.
Therehasrecentlybeenasurgeofinterestinmarinebioresources,particularlyseaweeds,assourcesofbioactivesubstances.Amongthesestudies,ithasbeenshownthatpreparationsofseaweedsuchaspolysaccharide,peptideandphycobiliproteincanaffectthemultiplicationoftumorcells.M… 相似文献
14.
张晓 《科技导报(北京)》1996,(4):44-48
我国水旱灾害与生态环境破坏的系统分析及经济损失估计SystematicAnalysisandLossAssessmentofChina’sFloods,DroughtsandDamageofEcologicEnvironment¥//张晓(中国社会科... 相似文献
15.
显著提高大肠杆菌中外源基因表达产物可溶性的双顺反子表达载体pNJUTRX-1 总被引:1,自引:1,他引:0
TheexpressionofheterologousproteinsinEscherichiacolihasbecomeastandardtech niqueinmolecularbiology .E .coliexpressionsystemshavetheadvantagesofproductioneco nomicsandlogistics .TheseadvantageshavemadeE .coliexpressionsystemapopularchoicefortheproductionof… 相似文献
16.
Thedioxotetraamineligandspossessthestructuressimilartothoseoftheoligopeptides .Theyareabletoformstablecomplexeswithtransitionmetalions .Theirtwoamidemoietieslosehydrogenionsduringcoordinationwithdivalentmetalions,thereforetheyareabletosta bilizehighoxid… 相似文献
17.
BR促进滇紫草培养细胞生长和色素形成的研究 总被引:1,自引:0,他引:1
Brassinolide (BR)canstimulatethecellelongationanddivisionatnanomolarlevelswhenappliedtoaplant .Itcanpromoteelongationofepicotyld ,hypocotyls ,mesocotylsandcoleop tiles .Thiseffectwasfoundtobeaccompaniedbyastimulationofprotonextrusionfromthecell[1] ,whichissi… 相似文献
18.
曾宪锋 《河北科技师范学院学报》1997,(3)
报道了采自河北省青龙县老岭的5种和1变种河北新记录植物。它们是榛属的长苞榛CorylusheterophylaFisch.exTrautv.var.shenyangensisL.ZhaoetD.Chen,缬草属的黑水缬草ValerianaamurensisSmir.exKomarov,马兰属的马兰Kalimerisindica(L.)sch.-Bip.和裂叶马兰Kalimerisincisa(Fisch.)DC.,灯心草属的乳头灯心草JuncuspapilosusFranch.etSav.以及鸢尾属的玉蝉花IrisensataThunb. 相似文献
19.
报道我国烟管螺科,管螺亚科,拟管螺属共计36种,其中有5新种:即桑坏拟管螺新种Hemiphaedusa sangpingensis sp.nov.云阳拟管螺新种Hemiphaedusa yunyangenisis sp.Nov.,西昌拟管螺新种Hemiphaedusa xichangensis.nov。,孟仑拟管螺新种Hemiphaedusa menghunanensis sp.nov,8灌阳拟管 相似文献
20.
金在春 《辽宁师范大学学报(自然科学版)》1996,19(2):164-170
以矩阵为工具,给出了一类函数不定积分的简捷求法,用此法求形如:∫sinpxcosqxdx,∫cospxcosqxdx,∫sinpxsinqxdx,∫epxsinqxdx,∫epxsinqxdx,∫sinaxsinbxsincxdx等类型的不定积分较方便,并给出了方法的理论依据,又通过实例指出了方法的具体运用,结果是有意义的. 相似文献