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1.
河南省螽斯类初步调查(直翅目)   总被引:3,自引:0,他引:3  
首次系统报道河南省螽斯类33属,57种,其中记述5个新种。即:素色杆蟋螽Phryganogrylacrisunicolor,sp.nov.;短突平背螽Isopserabrachystylata,sp.nov.;黑膝饰尾螽Cosmeturanigrogeniculata,sp.nov.;中华赢蛩螽Nipponomeconemasinica,sp.nov.;河南杉螽Thau-maspishenanensis,sp.nov.。模式标本存中国科学院上海昆虫研究所。  相似文献   

2.
对采自西安的斑腿沙螽Tachycineselegantisimus(Grifini)的染色体进行了分析.结果显示,核型为2n♂=31(18m+2sm+10t+X);组式为2n=2L+14M+14S+X;NF=52.对该种沙螽的C带核型研究表明,斑腿沙螽的异染色质含量为30.33%.  相似文献   

3.
记述蛩螽科剑螽属昆虫一新种,即凹尾剑螽Xiphidiopsis lacusicerca sp.nov.标本采自广西环江地区。模式标本存陕西师范大学动物研究所。  相似文献   

4.
记述在湖北,河南采到的螽斯二新种:尖叶素木螽Shirakisotimaacuminatasp.nov.,短裂素木螽Shirakisotimabreuifissasp.nor.模式标本保存在中国科学院上海昆虫研究及山东大学生物系。  相似文献   

5.
记述在湖北、河南采到的螽斯二新种:尖叶素木螽Shirakisotimaacumi.natasp·nov·,短裂素木螽Shirakisotimabrevifissasp.nor.模式标本保存在中国科学院上海昆虫研究所及山东大学生物系.  相似文献   

6.
报道了螽斯总科蛩螽科一新种,缙云隐翅螽Acyrtaspisjinyunensissp.nov;螽斯科一新种,黄山寰螽Atlanticushuangshanensissp.nov.模式标本均保存于陕西师范大学动物研究所.  相似文献   

7.
南水北调工程与黄河水沙资源综合利用South—to—NorthWaterTransferProjectandComprehensiveUtilizationofWaterandsandResourcesoftheYellowRiver¥//田园(华北...  相似文献   

8.
论述在安徽、江西、浙江及辐射采到的螽斯二新种:宽肛掩耳螽(Blimaea megalopygmaea.sp.nov),叶肛掩耳螽(Blimaea foliata sp.nov).模式标本均保存在山东大学生物系。  相似文献   

9.
比氏康螽(CononaluspielicTinkham)是直翅目螽斯科昆虫,主要生活在海拔1000m左右的浅山地带,以捕食竹林中其它昆虫及小型动物为生.经过1986—1987年在四川卧龙自然保护区、木江坪保护站对比氏康螽进行的生活史系统观察,发现此种昆虫在这个区以卵越冬,一年仅发生一代,若虫有五龄.雌性成虫喜将印产在杂草的根基部.  相似文献   

10.
论述在安徽、江西、浙江及福建采到的螽斯二新种:宽肛掩耳螽(Blimaeamegalopygmaea.sp.nov),叶肛掩耳螽(Blimaeafoliatasp.nov.).模式标本均保存在山东大学生物系  相似文献   

11.
IntroductionThedesireforanoptimaldiscretizationschemeremainsoneofthecriticalissuesincomputationalfluiddynamicsandnumericalheattransfer[1,2].Anoptimalschemepossessesaccuracy,stability:boundedness(nounphysicaloscillations)andalgorithmicsimplicity.Themaincon…  相似文献   

12.
Packingsandpackedcolumnsarewidelyusedinmanyprocessesinchemicalindustryandenvironmentaltechnology .Incontrasttoplasticandceramicmaterials ,stainlesssteelpackingsownadvantagesfortheirelasticityandfirmness.However,theirmasstransferperformancehasrecentlybee…  相似文献   

13.
IntroductionLinearminimumvariancedstepaheadpredictorsaremostlypopularinmanyfieldsofapplication,suchasprocesscontrolprediction,adaptivecontrol,andeconomicprediction[1,2].Thispaperdiscussesthepracticeofcomputingcurrentpredictorformsandpresentsasetofrecursi…  相似文献   

14.
Forstudyingthedimensiontheoryofdynamicalsystem ,PesinintroducedCarath啨odorystructure(C structure)whichleadstothegeneralizationsofbothclassicaldimensionsandtopologicalpressures;HeconsideredtwotypicalC structureswhichconnectsrespectivelytheopencoveringand…  相似文献   

15.
Recently ,theresearchofartificialsuperlatticeshasbeenahottopicincondensedmatterphysicsandmaterialsfield .Before 1 984,researchworksonsuperlatticesweremainlyfocusedonperiodicstructures .Thediscoveryofquasicrystalhasopenedupanewfieldincondensedmatterphysicsa…  相似文献   

16.
Antibacterial Effects of Silver Loaded Hydroxyapatite   总被引:6,自引:0,他引:6  
IntroductionIthaslongbeenknownthatsilveranditscompoundhavestronginhibitoryandbiocidaleffectsonbacteria[1] .SpadarofoundthatsilverionhadabiocidaleffectonasmanyassixteenkindsofbacteriaincludingEscherichiacoliandStaphylococcusaureus.Thismeansthatithasabroa…  相似文献   

17.
Quantum Efficiency of Fluorescent Dyes and Color Matching   总被引:2,自引:0,他引:2  
IntroductionThetextilecoloristsusefluorescentdyestoachievecertainspecialeffects ,whichcouldnototherwisebeobtained .Sincefluo rescentdyeshavetheuniqueopticalpropertiesdifferentfromcon ventionaldyesandagents,thevariousdifficultiesareencounteredmainlyinflu…  相似文献   

18.
IntroductionThehighTcsuperconductorsarelayeredmaterialswithCuO2 planes ,separatedbyinsulatingrock saltoxidelayers.TheimportanceoftheCuO2 planeshascreatedmajorinteresttostudytheelectronicandstructuralbehaviourofthesestructuralelementssincethediscoveryofth…  相似文献   

19.
Introduction  Inthisarticle,Wewouldliketobeginbyfirstlookingatourdissatisfactionwithteacher-centeredteaching;thenlookingattwostrategiesthatarecrucialforteachersthathavethesameproblemtomovetowardslearning-centeredteachingsuccessfully.Emphasisisplacedo…  相似文献   

20.
IntroductionThemethodologyofmulticlassifiercombinationattractsextensiveattentionfromresearchersinthefieldofpatternrecognition.Mostresearchesfocusonhowtoselectthebestresultfromthosegivenbyseveraldifferentclassifiersforthepurposeofthebestrecognitionra…  相似文献   

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