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CO2激光治疗小儿面颈部色素痣14例疗效观察李小标(武汉市儿童医院皮肤科,430016)关键词色素痣CO2激光EraluationonEfectof14caseschildren′sNerusPigamentosusonFaeeandNeckwith... 相似文献
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对激光血管内照射治疗安全性的讨论林爱珍1陈荣2(1.福州市第二医院福州350007)(2.福建师范大学激光所福州350007)关键词激光血管内照射安全性DiscusionontheSecurityofILIBLinAizhen1ChenRong2(1... 相似文献
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稻纵卷叶螟对杂交水稻及常规水稻的生态反应 总被引:6,自引:0,他引:6
稻纵卷叶螟对杂交水稻及常规水稻的生态反应钱希(国营黄海农场,江苏省响水县224624)EcologiealResponsesofRiceCasewormtoHybridRicesandTraditionalRices¥QianXi(TheStateFarmofYellowSea,XiangshuiCounty,Jiangsu,Province224624).ChineseJournalofEcology,1993,12(6):21-24.Tostudytheeffectofricecultivarsontheoviposition,emergence,wormdevelopmentandnaturalenemvparasitionofcasewormandlossescausedbythepest,observationshavebeenmadeon16ricecultivarsinHuanghaiStateFarminNorthernJiangsuprovince,wherecasewormgraduallybecomemoreandmorevi-olentsincethechangesincultiva 相似文献
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GeminivirusesareagroupofplantvirusescharacterizedbytheircircularsinglestrandedDNA(ssDNA)genomeandauniquegeminateparticlemorphology[1].Geminivirusesaredividedintothreesubgroupsonthebasisofgenomeorganizationandinsectvector:AllsubgroupIgeminivirusesareleaf… 相似文献
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Insectsarethemostsuccessfulanimalgroupintermsofnumbersofspecies.Althoughmanyfactorsmustcontributetotheprofusionofinsectspecies,onekeyelementisprobablyadevelopmentalplanthatincorporatesmetamorphosisanddiapause.Diapauseisacomplexadaptativeresponsewhichi… 相似文献
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毛白杨COMT基因cDNA的克隆、序列与特异性表达分析 总被引:5,自引:0,他引:5
Ligninisanabundantnaturalproductiononlysecondtothecellulose ,asacellwallcomponentofallvascularplantsinbiosphere .Despiteitsimportantbiologicalsig nificanceinplants ,ligninisanundesirablecomponentinthechemicalprocessofpaperpulping ,andithasnegativeimpacto… 相似文献
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竞争性PCR检测MLC_2-糜酶融合基因在转基因小鼠中的组织特异性表达 总被引:1,自引:0,他引:1
用竞争性 P C R 方法定量检测了大鼠肌球蛋白轻链 2 启动子(m yosin light chain 2 prom ot er, M L C2) 糜酶(chym ase)融合基因在转基因小鼠不同组织中的表达情况,发现 M L C2 chym ase融合基因在转基因小鼠的心脏中有较高水平的表达,在骨骼肌中表达水平较低,在肾脏中有微弱表达;而在肝脏和肺中未检测到.表明 M L C2 chym ase 融合基因改变了野生型 chym ase 在生物体内的表达特性,不仅提高了表达效率,而且赋予了一定的心脏组织特异性,为进一步研究 chym ase 基因在心脏中的功能奠定了基础. 相似文献
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鼎湖山土壤的微生物及其对酸度的适应特征 总被引:2,自引:0,他引:2
鼎湖山土壤的微生物及其对酸度的适应特征葛荣盛(广东省土壤研究所广州510650)SoilMicrobcsatDinghushanNaturalReserveandTheirAdaptabilitytoAcidity¥.GeRongsheng(Guang-dongInstituteofSoilSciences,Guangzhou510650).ChineseJournalofEcology,1993,12(3):11-18.ThispaperdiscussesthemicrofloraeinsoilsunderdifferentforesttypesatDinghusannaturalreserveandtheiradaptabilitytoacidity:1.Undermixedforest,ammonifyingBacteria,cellulose-decomposingbacteriaandOligonitrophilesaredominant;underbroadleavedforest,ceIlulose-decomposingfungiaremore;andlittledifferencecanb 相似文献
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Xylanisamajorcomponentforminghemicelluloseandaccountsfor50%ofdryweightofherbaceousplants.Itssourcesareveryabundantintheworld.Xylanisfirstlyhydrolyzedintosmallmolecularxylose,andthenthexylosecanbeutilizedbymicrobesinmaterialcycle.Therearetwowaysforhydrol… 相似文献
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生态农业:一种思想体系传播的实证分析 总被引:1,自引:0,他引:1
生态农业:一种思想体系传播的实证分析李季(北京农业大学100094)EcologicalAgriculture:APositiveAnalysisoftheSpreadingofItsIdeology¥.LiJi(DepartmentofLandResources.BeijingAgriculturalUniversity,Beijing100094).ChineseJournalofEcology,1993,12(3):63-67.ThispaperreviewstheoverallhistoriesofecologicalagricultureinChinainthelast10years,includingitsfeatures,researchesandpractices,andgivessomediscussions,conclusionsandperspectivesofitsdevelop-mentaltrend.Keywords:ecologicalagriculture,ecosystem,eco-economics.我国的生态农业从兴起到现在已十余载,其发展之迅猛无论在理论上还是实践上, 相似文献
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Anorganism,S.cerevisiaewidelyusedinbrewing,bakingandinethanolproductionprocessesisnotabletohydrolysestarch.ThusthetraditionalconversionofstarchintoethanolandCO2dependsontheadditionoftheenzymespriortofermentation,whichleadstoliquificationandsaccharificat… 相似文献
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ProfessorWANGYing Lai,world renownedbiochemistandamemberoftheChineseAcademyofSciences ,passedawayat 19:10 ,May 5,2 0 0 1resultingfromanincurabledisease .Sincethen ,theChineseCommunistPartyhaslostanoutstandingmemberstrugglingallhislifeforthedevelopmentofscienceinC… 相似文献
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90年代农村发展与农业生态研究彭廷柏(中国科学院长沙农业现代化研究所,410125)RuralDevelopmentandAgro-ecologicalResearchin1990s¥.PengTingbai(ChangshaInstituteofAgri-culturalModernization,AcademiaSinica,410125).ChineseJournalofEcolegy,1993,12(2):2-3.InordertoapproachtherelatedproblemsofChina’sagro-ecologicalresearchin1990s,thispaperana-lyzedthenewtrendsofstructuralchangesinruraleconomyandagro-ecology.underconditionofsocialistmarketeconomyexpoundedsomeviewpointsonthecoordinativedevelopmentofagro-ecologyandagro-economy,thestrengtheningofabsorbi 相似文献
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Epilepsyisoneofthecommondiseasesduringchildhoodinclinicalpractice.Becauseofcomplexetiology,molecularmechanismsofepileptogenesisarenotfullyclear.Asweknowepilepsyiscausedbyimbalancebetweenexcitationandsuppressionofthebrain.Ithasbeenshowninhumanandanimalm… 相似文献
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非致病微生物在植物—病原菌协同进化中的作用 总被引:2,自引:0,他引:2
非致病微生物在植物-病原菌协同进化中的作用单卫星(西北农业大学植保系,陕西杨陵712100)TheRoleofNon-pathogenicMicroorganismsinPlant-pathogenCoevolution¥ShanWeixing(Depart-mentofPlantProtection,NorthwesternAgriculturalUniversity,Yangling,Shaanxi712100).ChineseJournalofEcology,1993,12(6),54-59.Inviewofpresentproblemsassociatedwithplantdiseasecontrol,coupledwithrecentadvancesinbiolog-icalcontrolofplantdiseasesandplant-pathogeninteractions,theauthorpointedouttheimportanceofnon-pathogenicmicroorganismsinhabitingplantsurfacesinregulationofplant-pathoge 相似文献
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Itwasrecentlyevidencedthatmetabolicdisturbancesoffolicacidarecloselyrelatedtocardiovasculardiseasesandbirthdefects.5,10MTHFRisanimportantenzymeinthefolicacidmetabolicsystem.DecreaseinMTHFRactivitymayinducetheappearanceofhyperhomocysteinemia,whichmaycaus… 相似文献
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南方丘陵山区农业生态环境的改善──以五华县新一村为例钟继洪,唐淑英,谭军(广东省土壤研究所,广州510650)ImprovemcntofAgro-ecologicalEnvironmentinHIillyandMountainousArcasofSouthChina:TakingXinyiVillageofWuhuaCountyasanExample¥.ZhongJihong,TangShuying,TanJun(GuangdongInsti-tuteofSoilScience,Guangzhou510650).ChineseJournalofEcology,1993,12(4):52-54.XinyivillagerepresentsatypicalhillyandmountainousareainGuangdongprovince.Asaresultofpro-longedextensiveexploitationofnaturalresources,itsagro-ecologicalenvironmentwasworsened.Throughharnessingthelandresourcesoft 相似文献
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Pollengrainscausesomerespiratorysystemdiseasessuchasallergicasthmaandhayfever .Thesediseasesap pearespeciallyinfloweringperiodsof 相似文献