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1.
Microdialysisisarelativelynewbioanalyticalsamplingtechniquewithremarkablepotential.Initiallythetech niquewasdevelopedforfollowingneurotransmitterreleaseinthebrain[1 ] .Nowadays ,ithasbeenextendedtouseinmanyfieldsincludingpharmacokinetic[2 ] ,toxicology[3] ,bio…  相似文献   

2.
IntroductionPolyhydroxyalkanoates(PHAs)areafamilyofbiopolyestersynthesizedbymanybacteria[1,2 ] .AmongPHAs ,polyhydroxybutyrateorPHBisthemostcommonmember[3] .AttemptshavebeenmadetodevelopcommercialfermentationprocessesfortheproductionofPHAs[4 7] .Biopol,acommerci…  相似文献   

3.
IntroductionPolyhydroxyalkanoates (PHAs)areafamilyofintracellularbiopolymerssynthesizedbymanybacteriaascarbonandenergystoragecompounds[1,2 ] .AttemptshavebeenmadetoproducesomeofthePHAsforapplicationasbiodegradableplastics[3 5] .PHAscanbebroadlydividedintotwog…  相似文献   

4.
Inourpreviouspaper[1] ,thesynthesisof3,13 dihydroxyl 1,5 ,8,11,15 ,18 hexaazacyclicaminehexahydrobromidehasbeenreported .Thecrystalstructureofthiscompound (Fig .1)hasbeendeterminedbysingle crystalX raydiffraction[2 ] .RecentlytheNMRmethodswerealsousedtoinvestigatethesteri…  相似文献   

5.
0 IntroductionC3N4 isanewlydevelopedsuperhardcoatingmaterial.Itwaspredictedbytheorytohaveahardnessthatcanbecomparabletoorevenexceedingthatofdiamond[1 4 ] ,whichcausestheattentionofmanyscientists.Fujimoto[5] depositedC3N4 coatingsonWCsubstratesbyIonAssistedDyna…  相似文献   

6.
IntroductionThecardinalityofafuzzysetisoneoftheproblemsthathavebeeninterestedinfuzzystatisticsduetoitsvarietyofapplication .Forexampleininsuranceactuary ,thefuzzysetofpeopleinthethirdstateisrelatedtothecardinality[1] .Alsothecardinalityiscloselyrelatedto…  相似文献   

7.
BackgroundIntheearly 195 0s,MortonandYen[1] developedthefibertracingmethodintheyarn .Theymixedsomedyedfibersintoyarnbeforecarding ,anddippedtheyarninachemicalreagentwithsimilarrefractiveindextoobservethedyedfibersintheyarnunderthemicroscope .Theconceptoffibe…  相似文献   

8.
IntroductionIonexchangeisthemostfrequentlyusedchromatographictechniquefortheseparationandpurificationofchargedbiomolecules ,especiallywhereasmallamountofproteinistobeextractedfromalargevolume[1 3] .Gelfiltrationisatechniquethatcannotonlyseparateproteins ,…  相似文献   

9.
Soundspeedintheoceanmaybeaffectedbyinternalwave ,mesoscalestructure ,etc .Thisintro ducesaperiodicrange -dependentperturbationoverthesoundspeedintheraysysteminunderwateracoustics[1,2 ] .Theinfluenceofthisperturbationontheraybehaviorwasstudiedbasedontheparabo…  相似文献   

10.
IntroductionEmodinisoneoftheanthraquinonecompounds[1] ,whichexistsinmanymedicalplantssuchasradix polygonimultiflori,rhizomapolygoni,etc .Emodinisanimportantcompoundinmedicine .Ithasmanybiologicalactivitiessuchasanti infection ,decreasingbloodlipidscontent ,e…  相似文献   

11.
IntroductionSincethelate 1970salargenumberofstudieshaveconsideredirrigationschedulinginirrigationmanagement[1- 7] andithasbeenshownthatefficientand profitableirrigationschedulingstrategiesareneeded ,particularlywherewateravailableforirrigationislimited .Inno…  相似文献   

12.
IntroductionPolyhydroxyalkanoates (PHAs)areafamilyofintracellularbiopolymerssynthesizedbymanybacteriaasintracellularcarbonandenergystoragecompounds[1] .PHAshaveawiderangeofphysicalpropertiesrangingfrombrittletoflexibletoelastic ,dependingontheirmonomerstr…  相似文献   

13.
IntroductionTraditionalmethodofinspectingandmonitoringyarnqualityincottontextileindustryisprocessedoff lineinlaboratory .Testresultsareanalyzedbymantogetproductsqualityinformationandadjustmachinesmanuallywhenproblemsarefound[1,2 ] .Thiskindofoff linetestwa…  相似文献   

14.
Antibacterial Effects of Silver Loaded Hydroxyapatite   总被引:6,自引:0,他引:6  
IntroductionIthaslongbeenknownthatsilveranditscompoundhavestronginhibitoryandbiocidaleffectsonbacteria[1] .SpadarofoundthatsilverionhadabiocidaleffectonasmanyassixteenkindsofbacteriaincludingEscherichiacoliandStaphylococcusaureus.Thismeansthatithasabroa…  相似文献   

15.
IntroductionClothingisanintegralpartofhumanlife ,andanunderstand ingoftheroleofclothinginthethermalbalanceofthehumanbodyandthermalcomfortundersteady stateconditionshasdevel opedoverthepastfewyears[13 ] .Thehumanbodyisrarelyinathermalsteadystate,butiscontin…  相似文献   

16.
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   

17.
0 IntroductionCalixarenesandtheirderivativeshaveattractedgreatinterestinhost guestchemistry .Theyarenotedfortheirabilitytoformhost guestcomplexesbytrappingorganiccompounds,smallions ,andgasesintheirtoruslikecavitiesaswellastomimicenzymefunctions[1] .Theyca…  相似文献   

18.
0 IntroductionLiftingschemeasintroducedbyW .Sweldens[1] in 1996 ,isanewwayofconstructingwavelettransformthatnotnecessarilybasedontranslatesanddilatesofonefunction .LiftingallowstheconstructionofwaveletsentirelyinthespatialdomainwithoutmakinguseoftheFouriertr…  相似文献   

19.
RecentlyimpulseGroundPenetratingradars (GPRs)arewidelyappliedtodetecttheburiedobjects[1] .WhenGPRsisusedtodetecttheshallowlyburiedobjects ,thedistancebetweentheobjectsandtheantennaapproximatelysatisfythefarfieldconditionofthecentralfrequency.Ifwedesignthe…  相似文献   

20.
0 IntroductionThird harmonicgeneration (THG )imaginghasbeendemonstratedrecentyearsinbiologicaltissues[1,2 ] .OnedistinctadvantageofTHGimagingcomparingwithfluorescenceimagingisthatitcanproceedwithouttheneedtolabelthebiologicaltissueswithappropriateprobes .And…  相似文献   

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