共查询到20条相似文献,搜索用时 156 毫秒
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IntroductionA .tatarinowiiScott,aperennialimmergedherbinwetlands ,belongstoAraceae ,Acorus.ItsflorescencewasfromApriltoJulyanditsrhizomewasfragrant.ItisdistributedovertheSouthpartofChina ,EastIndian ,VietnamandNorthThailand .Itwascommoninwetlands ,brooksorth… 相似文献
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IntroductionPolyaluminiumchloride(PAC) ,akindofinorganicpolymerflocculant,iswidelyusedinwaterandwastewatertreatment.InordertoincreasethecoagulationeffectofPACandimprovethequalityofPACproduct,itisnecessarytoraisethedegreeofpolymerizationofPAC .Generally ,t… 相似文献
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Introductionα naphthaleneaceticacid (NAA)isanimportantplantgrowthregulatorusednotonlytopreventthepreharvestdropofapplesbutalsoasafruitthinningagent (Worthing ,1991) .MuchresearchworkabouttheeffectofNAAonplanttissues(Speer,1993;Hideyoshi,1993;Prasd ,1994 ) ,plantgrowtha… 相似文献
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加利福尼亚谷地与大烟雾CaliforniavtheBigSmog¥Abstract:California,particularlyLosAugeles,encapsulatesAmerica'ssuccessesandfailures:thecari... 相似文献
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Amethodforcalculatingthetotalozoneamountintheclearskies¥BaiJianhui;WangGengchen(InstituteofAtmosphericPhysics,ChineseAcademyo... 相似文献
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低公害汽车开发普及的现状及展望StatusandDevelopmentofLow-pollutingAutomobileResearchandPopularization¥MasayediItoAbstract:Atpresent,itisimper... 相似文献
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XU Songling 《环境科学学报(英文版)》1999,11(4):504-509
IntroductionTheword“environment”nowbecomesacatchwordinChina,buttheterm“environmentalawareness(EA)”isstillnotinthesameposition.ThisisthereasonwhyItrytomakeabriefinquiryinthispaperabouttherelationshipbetweentheEAandChina○ssociety.EAisanunderstandingofv… 相似文献
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中国北方沿岸经济贝类砷残留量的调查研究 总被引:1,自引:2,他引:1
本文论述了中国北方沿岸经济贝类As残留量分布及污染现状。比较了主要经济贝类体内As因种类、生活习性不同形成的差异,其原因为贝类是一种滤食性生物,能累积环境中的As,各种贝类累积As的能力不同。综合比较结果是中国北方涡岸经济贝类尚未受到As污染。探讨沿岸重要港湾,河口环境中As对贝类的影响,着重讨论了大连湾贝类As污染。 相似文献
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CompoundpollutionofCd,Pb,Cu,Zn,Asinplant-soilsystemanditsprevention¥WuYanyu;WangXin;LiYing(InstituteofAppliedEcology,ChineseA... 相似文献
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《安全.健康和环境》2003,(4)
UnitedNationshavementionedthatover30Euro pean,CentralAsianandNorthAmericancountrieshaveagreedapactextendingthepublic'srighttoknowaboutchemicalwasteandtoxicpollutantsintheirareas.Afterovertwoyearsofnegotiationsthedraftagree mentwillcoverthedisposal,sto… 相似文献
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P.D.Whanger 《环境科学学报(英文版)》1996,8(3):328-340
Seleniummetabolisminanimalsandhumans¥P.D.Whanger(DepartmentofAgriculturalChemistry,OregonUniversity,Oregon97331-7301,USA)Abst... 相似文献
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SeasonalchangesofendogenousABAandcytokininsinenvironmentaladaptationofdifferentecotypesofreedplantsWangHongliang,ZhangChengli... 相似文献
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环境报告和评价的总体框架AFrameworkforEnvironmentalReportingandAssessment¥R.J.Swart;J.Bakkes,etal.Abstract:Seeingthatmostofthecurrentregio... 相似文献
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Ecologicalengineeringlandtreatmentsystems──AnewdevelopmentinChina¥GongPing;SunTieheng(InstituteofAppliedEcology,ChineseAcadem... 相似文献
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非洲沿海的传统渔民还能生存下去吗?WillTraditionalAfricanCoastalFishermenSurvive?¥WazirOkeraAbstract:TheAfricancoastalfishermen'sliferemainedsi... 相似文献
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《安全.健康和环境》2003,(2)
CSB,NTSBConcludeAgreementonAgencyCooperationFulfillingarequirementofSection112(r)oftheCleanAirActAmendments,theNationalTransportationSafetyBoard(NTSB)andtheU.S.ChemicalSafetyBoard(CSB)agreedtoestablishformalcooperativetiesbetweenthetwoagenciesatWashi… 相似文献
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《环境科学学报(英文版)》2003,(3)
ResearchCenterforEco EnvironmentalSciences,ChineseAcademyofSciences (RCEES CAS ) ,formerlyInstituteofEnvironmentalChemistry ,ChineseAcademyofSciences ,wasfoundedin 1975 .In 1986,itwasamalgamatedwithResearchCenterofEcology ,CAS ,andwasrenamedasResearchCenterforEco E… 相似文献