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1.
INTRODUCTIONAntisenseoligodeoxynucleotides (ASODN )caninhibittranscriptionandinterferewithspe cialgeneexpression .AfixedpointontheK rasgenewithhighmutationrateinpancreaticcarci nomaoffersanintracellulartargetforpancreaticcarcinomagenetherapywithASODN (Cai…  相似文献   

2.
表语形容词后接宾语WORTH的结构特征辛勇红1.英美词典对worth用作形容词所标词性并不相同,但后面须接宾语是一致的。ChambersTwentiethCenturyDictionary"把"worth"列为adj.形容词。OALD与PocketO...  相似文献   

3.
INTRODUCTIONAcuterenalfailure(ARF),usuallyreferredtoasacutetubularnecrosis,isacommonsyndromecharacterizedbyanabruptandsustaineddeclineinglomerularfiltrationwithresultantazotemia,causedbyacuteischemicand/ortoxicinjuries.Itisnotimmediatelyreversiblewhenca…  相似文献   

4.
INTRODUCTIONLetZ ,N0 andNdenotethesetsofinte gers,non negativeintegersandpositiveintegers,respectively.Andletχ ={Xi} i∈Zdenotease quenceofreal valuedrandomvariablessuchthatEXi =0andEX2 i =σ2 X  i∈Z .Anyrealizationofthesequence {Xi} i∈Ziscalleda“randomscenery” .Lety ={…  相似文献   

5.
INTRODUCTIONAnimportantpartinthepulpingandpapermakingindustryistherefiningprocess.Whethertherefinedpulpisgoodornotiscrucialforachievingconsistentpulpquality.Whatpeopleexpectandstriveforintherefiningprocessisguaranteedrefinedpulpquality,safetyinproduct…  相似文献   

6.
OBSTACLE DETECTION BY ALV USING TWO 2D LASER RANGE FINDERS   总被引:6,自引:0,他引:6  
INTRODUCTIONObstacleavoidanceisanessentialtaskoftheALV .Toachievethis,aquickandreliablede tectionofobstaclesisveryimportant.Severalclassesofactivesensorscanbeusedforthispur pose .Alaserrangefinder (LRF)cansuitablybeusedtodetectobstaclesaheadoftheALV .3DLRFs…  相似文献   

7.
INTRODUCTIONAnAdeno associatedvirus(AAV)particleiscomposedofthreestructuralproteinsandalin ear ,single strandedDNA (ssDNA)genomeofapproximately 4 .7kb .AAVisadefectivehu manparvovirusthatnormallyreplicatesproduc tivelyonlyinthepresenceofhelperfunctionsprovide…  相似文献   

8.
INTRODUCTIONTomeettherequirementsofEMIstandard ,switchingmodeconvertersshouldlimititsswitchingrippleofinputcurrenttoalowlevel.OneofthetypicaltraditionalmethodsistoplaceacostlyandbulkyEMIfilterattheinputcircuitoftheconverter.ForAC DCconverterstheinputfi…  相似文献   

9.
STATEBUDGETINGINTHEUNITEDSTATESMONICAZHONGAsacentralelementofgovernment,budgetingis″adecisionmakingsystemforallo-catingfundsa...  相似文献   

10.
ADiscussionOntheRangeofMeaningofEnglishWords──AnApproachtoEnglishWordsLearningQiHaoZhenSuccessinEngllshrequiresaknowledgeofwo...  相似文献   

11.
瓜沙二州间一块消失了的绿洲   总被引:1,自引:1,他引:1  
瓜沙二州间一块消失了的绿洲李并成AnOasisDisappearedbetweenGuazhouandShazhou¥LiBingchengJudgingfromDunhuangManuscripts,historicaldataandon-the-...  相似文献   

12.
INTRODUCTIONSincethepolymerizationofmethylmethacrylate(MMA)withrareearthcatalystswasrealizedforthefirsttimein1991,aseriesofnewrareearthcatalystsystemssuchasNd(P204)3/Al(iBu)3,Nd(P204)3/Al(iBu)3/CCl4,Nd(Oct)3/Al(iBu)3,Ln(acac)3/BuMgCl,Y(acac)3/Al(iBu)3/BuLi,Nd(naph)3/BuLi,andNd(O…  相似文献   

13.
INTRODUCTIONThegenerationofwasteswillbeincreasedwiththerapiddevelopmentoftechnologiesandindustrialpractices.Alargeamountofhazardousortoxicwastesisgeneratedintheprocessingin dustry(Nathanson ,1 986) .Althoughconvention alend of pipewastetreatmenthasprovedtobe…  相似文献   

14.
INTRODUCTIONItisknownthattheapplicationofanAll Op ticaltypeSiliconMicroResonator (AOSMR)orsensorisgreatlyrestrictedbytheproblemofop ticalcoupling (Guckeletal.,1 993;Pitcheretal.,1 990 ) .Thevibratorsurfaceisusedforopti calexcitationandvibrationpickupinanumberofAOS…  相似文献   

15.
INTRODUCTIONPositronEmissionTomography (PET)isapowerfulbiologicalimagingtoolcapableofpro vidinghighqualityfunctionalimages.Aradioac tivelylabelledsubstance,designedtoshowthephysiologicalfunctionofaparticulartissue,isinjectedintoapatient.Thechosensubstanc…  相似文献   

16.
亚太地区开发人力资源的远距离教育研讨会会综述朱雪雯1995年10月24—27日,在上海召开了题为“开发人力资源的远距离教育”(DistanceEducationasanAsPectofHumanResourceDevelopment)地区研讨会。会议...  相似文献   

17.
Mask,AConveyanceofIsolationandDeath:OnMourningBecomesElectraYangYanhengEugeneONeil(1888~1953)isesteemedasthegreatestdramatis...  相似文献   

18.
INTRODUCTIONOn lineseparationandpreconcentrationhavereceivedconsiderableattentioninflowinjectionanalysiscoupledwithatomicabsorptionspec trometryduringrecentyearsandiswidelyap pliedforselectivityandsensitivityenhancement(Fang ,1 995 ) .Automationofthesamplep…  相似文献   

19.
INTRODUCTIONManyflowsandheatexchangesinengineeringoccurincomplexregions.Inthestudyofcomputationalfluiddynamics,thegenerationofbodyfittedcoordinatesforthesecomplicatedareasisgenerallyacriticalrequirementforaccuratenumericalflowsimulations.Apoorlyconstr…  相似文献   

20.
StressAnalysisoftheGlassBulbof35-inch(V)120°ColorPictureTubeTorongeyPeterKimanus(MoiUniversity,DepartmentofPhysics,P.O.Box390...  相似文献   

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