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1.
Isolation, properties and spatial site analysis of γ subunits of B-phycoerythrin and R-phycoerythrin 总被引:2,自引:0,他引:2
Phycobiliproteins,whichincludephycoerythrin,phycocyanin,allophycocyaninandphycoerythrocyanin,arelightharvestingchromoproteinsinrhodophyceae,cyanobacteria,cryptophyceaeandsomepyrrophyceae[1,2].Phycobiliproteinsarecomposedofα,βandγ(onlyinphycoerythrin)subunit… 相似文献
2.
Proteincrystalgrowthhasbeenofgreatimportanceinexploitationofstructuresofbiologicalmacromolecules.Themicrogravityenvironmentinspaceisanidealplacetostudythecomplicatedproteincrystallizationprocessandtogrowgoodqualityproteincrystals.Sincethe1980s,noticeabl… 相似文献
3.
Untilnow,allmachiningmethodsusedarephysicalorchemicalorphysicochemical.Thetechnologysystemofnaturalsciencecanbeclassifiedintothefollowingthreesubsidiarysystems:physics,chemistryandbiology.Thereforeabiologicalmachiningtechnologywillbeabrandnewbranchinma… 相似文献
4.
Artificialorganswhichhavetocontactwithbloodforalongterm,suchasartificialheartvalvesandartificialheart,needgoodbloodcompatibility.Lowtemperatureisotropicpyrolyticcarbon(LTIcarbon)isusuallyusedforfabricationofartificialheartvalvesnow.Butitsbloodcompatibil… 相似文献
5.
Apoptosisorprogrammedcelldeathhasrecentlybeenrecognizedasamodeofcelldeaththatcanbeactivatedinmanysystemsbyavarietyofchemicalandphysicalstimuli.Observationfromseverallaboratoriesindicatedthatmanyanticanceragentscaninduceapoptosisindifferenttypesofcell[… 相似文献
6.
Itwasrecentlyevidencedthatmetabolicdisturbancesoffolicacidarecloselyrelatedtocardiovasculardiseasesandbirthdefects.5,10MTHFRisanimportantenzymeinthefolicacidmetabolicsystem.DecreaseinMTHFRactivitymayinducetheappearanceofhyperhomocysteinemia,whichmaycaus… 相似文献
7.
持续农业与中国的生态农业 总被引:6,自引:0,他引:6
持续农业与中国的生态农业李萍萍,章熙谷(南京农业大学农学系,210014)SustainableAgricultureandChina’sEcologicalAgriculture¥.LiPingping;ZhangXigu(NanjingAgricul-turalUniversity,210014).ChineseJournaJofEcolegy,1993,12(2):16-18.Thebackground,conceptandcharacteristicsofsustainableagriculturearediscussed,anditssimilaritiesanddifferencestoChina’secologicalagriculturearedescribed.It’sconsideredthatChina’secologicalagri-cultureisaconcretereflectionofsustainableagricultureandasuccessfulmodelforagriculturaldevelop-ment.Keywords:sustainableagricult 相似文献
8.
Breeding technology of alloplasmic wheat 总被引:4,自引:0,他引:4
Thenucleiofcultivatedwheatcouldbetransferredintocytoplasmofheterogenicspeciesorgeneraviasubstitutionbackcrossandothertechniques,thusTriticinaeexhibitswidegeneticdiversityofcytoplasm.Thisdiversityhadboththeoreticandbreedingvalueandcouldbeusedinalloplas… 相似文献
9.
Amolecularmarkercanbedesignatedascodominantordominanttypeaccordingtothegenotypicinformationprovided[1—4].Foracodominantmarker,threebandpatternscanbeobservedinelectrophoreticgels,whichcorrespondtotwocopiesoftheDNAsegmentsonthislocusbeinghomozygousP1type,h… 相似文献
10.
Nicotinic acetylcholine receptor is involved in acetylcholine regulating stomatal movement 总被引:4,自引:0,他引:4
Receptor,theprimarysiteofcellperceivingexternalsignals,controlsthecommunicationbetweencellsandenvironment[1].Acetylcholineisanimportantneurotransmitterinvolvedinthetransmissionofsignalsatjunctionsbetweennervesandbetweennerveandmuscle.Theactionofacetylch… 相似文献
11.
Differential effects of Ca2+ and Mg2+ on endonuclease activation in isolated promyelocytic HL-60 cell nuclei 总被引:1,自引:0,他引:1
Apoptosisorprogrammedcelldeath(PCD)isaprocessofcelldeletionwhichoccursinresponsetoanumberofcytotoxicandphysiologicallyrelevantstimuli.Thisprocessischaracterizedbyseveralearlymorphologicalterationsincludingplasmaandnuclearmembraneblebbing.Endogenousendo… 相似文献
12.
Membrane molecules in induction of apoptosis of thymocytes by mouse thymic dendritic cells which express Fas ligands 总被引:6,自引:0,他引:6
Apoptoticthymocytesweredetectedinsituinthethymus[1],whiletheeffectsofthymicstromalcellsontheprocessofcelldeathofthymocytesarestillunclear.Wepreviouslyfoundthatmousethymicdendriticcells(MTSC4)enhancedtheapoptosisofthymocytesinvitro[2],andtheseeffectsweredep… 相似文献
13.
Saccharomycescerevisiaeisanindustrialstrainwidelyusedintheproductionofethanol,breweryandsinglecellprotein(SCP).Butitisunabletofermentstarchduetothelackofamylolyticenzymes.Thestarchmustfirstbecooked,liquifiedandconvertedintoglucoseandthenutilizedincommer… 相似文献
14.
Scaffoldassociatedregion(SAR)andmatrixattachmentregion(MAR)areknownascisactingDNAelements,whichspecificallybindtonuclearscaffoldornuclearmatrix.SAR/MARareusually300—1000bplong,ATrich,andcontainingtopoisomeraseIIconsensussequenceandotherATrichsequencemotifs[1].… 相似文献
15.
植物化学生态研究促进生态农业建设 总被引:7,自引:0,他引:7
植物化学生态研究促进生态农业建设祝心如(中国科学院生态环境研究中心,北京100085)PhvtochemicalEcologlcalResearchandEco-AgriculturalConstruction¥.ZhuXinru(ResearchCenterforEco-enuivironmentalSciences.AcademiaSinica,Beijing100085).ChineseJournalofEcology,1993,12(4):36一40。Phytoallelopathyaffectsthefunctionanddynamicsofagro-system,andphytochemicalecologicalre-searchwillbenefittheconstructionofeco-agriculture,whichdisplaysinthefollowingmainaspects:weedcontrol,establishmentofreasonalcroppingsystem,implementationofcropgenicoptimization,re-ductionofap 相似文献
16.
生态位理论及其在森林生态学研究中的应用 总被引:47,自引:4,他引:43
生态位理论及其在森林生态学研究中的应用朱春全(中国林业科学研究院林业研究所,北京100091)NichcTheoryanditsApplicationinForestEcology¥.ZhuChunquan(InslituteofForestry,ChineseAcademyofForestrySciences,Beijing100091),ChineseJournalofEcology,1993,12(4):41-46.Thedevelopmentofnichetheoryanditsapplicationinforestecologicalstudyarereviewedinthispaper.Itispointedoutthatthefunctionalactionofplantunitwasnotinvolvedinpreviousnicheconcepts,Theparticularitiesofnicheofplantunitarediscussedandanewmethodisdevelopedtodetermineitwithpho-tosyntheticproductionasafunct 相似文献
17.
《Acta Botanica Sinica》2001,(4)
ActaBotanicaSinicaistheofficialpublicationofBotanicalSocietyofChina .Foundedin 1952 ,ithasbecomeamonthlyjournal .Itpublishesoriginalpapers ,shortcommunicationsandreviewsonallaspectsofplantsciences .Thescopeofthisjournalextendsfrommodernplantsciencetoclassic… 相似文献
18.
生态学的精神价值 总被引:1,自引:0,他引:1
生态学的精神价值陈清硕(江苏农学院扬州225001)SpiritualValueofEcology¥.ChenQingshuo(JiangsuAgriculturalCollege,Yangzhou225001):ChineseJournalofEcology,1993,12(3):68-72.Thispaperdescribesthefunctionsofecologyintheprogressofsocialideologyandcivilization.Ecologyhelpsbringintobeingtheconstructionofascientificworldoutlookandincreasetheecologicalconscious-nessofmankind.Italsosuppliesatotaldevelopmentalpointofviewforthesocietyandprovidesagreataestheticvalue.Thespiritualvalueofecologyshouldneverbeneglected.Keywords:socialecology,ecol 相似文献
19.
Themicroenvironmentconstitutedbythymicstromalcellsisanimportantsiteforthedevelopmentofthymocytes.95%ofthymocytesdieinthethymuseveryday,inthewayofapoptosis[1].Thecelldeathismainlycausedbythedefaultofpositiveselectionandtheactionofnegativeselectionswhichar… 相似文献
20.
陆生脊椎动物生态学研究的过去、现在和将来(前苏联科学院动物进化形态学与生态学研究所,莫斯科)Past,PresentandFutureofEcologicalResearchonTerrcstrialVctebratcs¥.(InstituteofAnimalEvolutionaryMorphologyandEcology,theFormerAcademyofSclencesofSovietUnion).ChineseJournalofEcology,1993,12(4):66-71。Thispaperdescribesthemainstages,directionsanditemsofecologicalresearchintheformersovietU-nion.EcologicalresearchinthecountrywasrestrodedbymanysuUectiveandoUectivefactorsandstilllagsbehindtheworldlevelinmanyaspectssuchaspopulationdynamicstheory,communityresearch,eco- 相似文献