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1.
天津东郊盐碱土微生物分布及土壤酶活性   总被引:8,自引:0,他引:8  
天津东郊盐碱土微生物分布及土壤酶活性靳素英,崔明学,蔺继尚(中国科学院沈阳应用生态研究所,沈阳110015)Distributionofmicroorganismsinsaline-alkalisoilatcasternsuburbsofTianji...  相似文献   

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石佛寺水库对周围环境的影响裴铁,范世香,韩绍文,迟振文(中国科学院沈阳应用生态研究所,110015)王鉴成(辽宁省水利电力厅,沈阳110003)ImpactsofShifosiReservoironItsAdjacentEcologicalEnvir...  相似文献   

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沈阳水资源保护与水质管理李秀鸿(沈阳环境科学研究所,110005)WaterResourceConscrvancyandWaterQualityControlinShenyang¥LiXiouhong(ShenyangInstituteofEnvironmentalscieilce,110005).(ChineseJournalofEcology,1993,12(5):45-48。Theoverallandlongtermimpactsofwaterresourceshortageandwaterpollutiononeconomicdevelop-ment,humanlifeandecologicalenvironmentinShenyangarediscussedinthispaper.Itispointedoutthatinordertosolvetheseproblems,areasonablecontrolpolicyandcorrespondingtechnologymustbeadoptedincombiningwiththedevelopmentandConservancyofexistin  相似文献   

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高效液相色谱法快速分析红松,云杉针叶中的维生素C   总被引:1,自引:1,他引:0  
高效液相色谱法快速分析红松、云杉针叶中的维生素C刘海玲,杜英君,杨志勇(中国科学院沈阳应用生态研究,沈阳110015)HigheffectiveliquidchromatographicanalysisofvitaminCinPinuskoraien...  相似文献   

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毛细管气相色谱法分析土壤中的优先有机污染物   总被引:2,自引:0,他引:2  
毛细管气相色谱法分析土壤中的优先有机污染物刘海玲,于殿臣,姚家彪,朱岩,何东慧,张丽珊(中国科学院沈阳应用生态研究所,沈阳110015)CapillarygaschromatographicanalysisofpriorityorganicPollu...  相似文献   

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辽宁省土地荒漠化概况及其防治对策   总被引:4,自引:0,他引:4  
辽宁省土地荒漠化概况及其防治对策朱教君,姜凤岐(中国科学院沈阳应用生态研究所,沈阳110015)LandDesertificationinLiaoningProvinceandCountermeasuresforItsPrevention¥ZhuJi...  相似文献   

7.
N,P供给对作物排放N2O的影响研究初报   总被引:8,自引:2,他引:6  
N、P供给对作物排放N_2O的影响研究初报陈欣,沈善敏,张璐,吴杰,王学强(中国科学院沈阳应用生态研究所,沈阳110015)ApreliminaryresearchontheeffectofnitrogenandphosphorussupplyonN_...  相似文献   

8.
辽宁省灾害区划初探   总被引:2,自引:0,他引:2  
辽宁省灾害区划初探尹功成,梁文举(辽宁省农业区划研究所,沈阳110031)(中国科学院沈阳应用生态研究所,110015)AnApproachtoCalamityDivisioningofLiaoningProvince¥.YinGongcheng(LiaoningInslituteofAgri-culturalDivisioning,Shenyang110031),LiangWenju(InsliluteofAppliedEcology,AcademiaSinica,Shenyang110015).ChineseJournalofEcology,1993,12(4):61-65.NaturalcalamitiesoccurwhenvariOusnaturalphenomnaendangerlife,mindsandproperties,butsomepotentialenvironmentaldisasterssuchasrnan-madeandanthropogenousnaturaldisastersdevelopslow-lyandprofoundly,whlchareunobviousandnotr  相似文献   

9.
植食性昆虫产卵的化学生态学   总被引:21,自引:1,他引:20  
植食性昆虫产卵的化学生态学张庆贺,姬兰柱(林业部森林病虫害防治总站沈阳110031)(中国科学院沈阳应用生态研究所,110015)ChemicalEcologyofOvipesitionofHerbivorousInsetts.¥ZhangQingh...  相似文献   

10.
沈阳市东陵区景观生态潜力研究   总被引:6,自引:1,他引:5  
沈阳市东陵区景观生态潜力研究赵羿,吴彦明(中国科学院沈阳应用生态研究所,110015)邓百祥(辽宁省水利水电勘测设计研究院,沈阳110006)EcologicalPotentialofLaudscapeinDonglingDistrictofShenyang¥ZhaoYi;WuYanming(InstituteofAppliedEcology,AcademiaSinica,Shenyang110015),DengBaixiang(LiaoningAcademyofWaterCon-servancyandWaterPowerSureeyingandDesigning,Shenyang110006).ChineseJournalofEcology,1993,12(5):1-8。Ecologicalpotentialoflaudscapeconsistsofitsproductivepotential,ecologicalpotentialandpricelesspo-tential.Throughcalculatingdifferentproductivepotentials(photosyntheticpot  相似文献   

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It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.  相似文献   

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Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.  相似文献   

18.
Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.  相似文献   

19.
肝癌中HBV和HCV基因和抗原的分布及意义   总被引:1,自引:0,他引:1  
采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细  相似文献   

20.
For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment.  相似文献   

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