speciation

speciation

1. For much of the 20th century, many evolutionists thought the answer was no.Instead they believed that genetic drift was the critical factor in speciation.

20世纪大部份的时候，许多演化学家认为这个问题的答案是否定的，他们认为遗传漂变才是推动物种形成的关键。

2. EPA as priority pollutants, Sb speciation analysis in the environment and biomonitoring has received relatively little attention.

EPA指出锑及其化合物是主要的污染物之一，但在环境和生物监测方面没有引起足够的重视。

3. Jolley(1993)is a study of dissolved phosphorus speciation in the lower molongolo sewage treatment plant(Canberra, Australia)detected no triphosphate in raw sewage entering the plant.

Jolley(1993)进行得一项研究中在溶解磷形态下molongolo污水处理厂（堪培拉，澳大利亚）未发现任何未经处理得污水中有三磷酸盐进入工厂。

4. Keywords East China Sea Tumen River Zinc Gadmium Lead Copper Speciation;

东海;图们江水;锌;镉;铅;铜;形式分析;

5. The Southwest China is not only the distribution center of grasshopper genus Ceracris Walker, but also the original and speciation center of it.

中国的西南地区是竹蝗属的分布中心，同时也是其起源和物种分化中心。

6. Primary speciation of eight elements (Cu,Zn,Mn,Fe,Ca,Mg,Sr and Ni)in ligusticum wallichii Franch was studied by atomic absorption spectrometry.

中药川芎是伞形科藁木属川芎的干燥根茎,用于活血化瘀,治疗缺血性心、脑血管疾病及慢性心衰、肾衰,疗效良好。

7. Subspecies is a stage during process of speciation.

亚种是物种形成过程中的一个阶段。

8. They say that beauty is in the eye of the beholder.It turns out that maybe speciation is, too.

人们说"情人眼里出西施"，看来物种的形成也是如此。

9. Note that artificial selection involves crossbreeding between genetic varieties of the same species and thus is not a form of speciation.

人择包含同物种间基因多样性的杂交繁育，也因此这不是物种形成的形式。

10. He was sceptical of the reality of sympatric speciation believing that geographical isolation was a prerequisite for building up intrinsic (reproductive) isolating mechanisms.

他对同域成种的真实性持怀疑态度，认为地理隔绝是建立内在（生殖）隔离机制的一个先决条件。

11. The content and speciation analysis of protein binding speciation of trace elements Fe,Zn,Cu,Mn in the pollens of rape,maize,tea and lotus were studied by AAS.

以油菜、玉米、茶及莲花粉为实验材料 ,应用原子吸收分光光度法测定了 4种花粉中微量元素 Fe、Zn、Cu、Mn的蛋白质结合态含量及形态分布。

12. However, the existence of sympatric speciation as a mechanism of speciation is still hotly contested.

但是，对于将同域物种形成作为物种形成的一个机制，仍然有着激烈的争论。

13. But there has been at least one recent study that suggests that sympatric speciation has occurred in Tennessee cave salamanders.

但是，至少最近已经有一个研究表明，同域物种形成曾经发生在美国田纳西州洞穴火蜥蜴上。

14. ARSENIC SOLUBILITY AND SPECIATION IN A CONTAMINATED SOIL AS AFFECTED BY LOW MOLECULAR WEIGHT ORGANIC ACIDS

低分子量有机酸对污染土壤中砷的释放及其形态分布的影响

15. Taoufik, M. and J.E.Dafir,“A Study of Water Quality in Lower Oum Rabiaa Basin, Morocco: Speciation of Nitrogen and Phosphorus,” Water Quality Research Journal of Canada, pp.120-9(2005).

何玫仪，“序列相关资料的主成分分析法-以德基水库水质监测数据为例”，中兴大学农艺研究所硕士论文，台中(2004)。

16. The present paper summarized some methods and techniques in the speciation analysis of arsenic in TCM,in order that optima...

作者对中药中砷的形态分析方法及可能应用的技术加以总结,以助于人们找到最佳方法,从而正确评价中药中砷的作用。

17. The process of speciation may fall within the purview of either, depending on the forces thought to drive it.

依推动物种形成过程的力量不同，物种形成的过程可能属于宏进化或微进化两者之一的范围。

18. Further analysis revealed that the gene expression in human brain was induced after human speciation.

信息学分析显示，在多种组织当中，人的脑与睾丸可能存在最为相似的基因表达谱。

19. Primary elemental speciation analysis

元素初级形态分析

20. elemental speciation analysis

元素形态分析

21. The element speciation analysis is pop and activity field.

元素形态研究是目前一个非常热门和活跃的领域。

22. NOVEL VIEWS OF PROCESS OF SPECIATION AND DEFINITION OF SPECIES

关于物种形成机制及物种定义的新观点

23. Keywords Fritillaria monantha migo;Trace element;Speciation analysis;ICP-MS;

关键词彭泽贝母;微量元素;形态分析;ICP-MS;

24. Keywords Alluvial plain;Humic acid;Heavy metal;Subsistent speciation;Soil;

冲积平原;腐殖酸;重金属元素;存在形态;土壤;

25. Several hybrid methods including GC-AAS, GC-MIP-AES, GC-FPD and GC-MS are introduced.Sampling and storage and quality control in speciation process are also discussed.

分析了有机金属化合物形态分析常用的几种方法，包括GC-AAS，GC-MIP-AES，GC-FPD和GC-MS等的特点，对样品的采集，贮存和预处理方法以及形态分析中的质量控制进行了讨论。

26. Several hybrid methods including GC-AAS, GC-MIP-AES, GC-FPD and GC-MS are introduced. Sampling and storage and quality control in speciation process are also discussed.

分析了有机金属化合物形态分析常用的几种方法，包括GC－AAS，GC－MIP－AES，GC－FPD和GC－MS等的特点，对样品的采集，贮存和预处理方法以及形态分析中的质量控制进行了讨论。

27. Conditions of mercury speciation transformation and effects of sulfur and chlorine on mercury emission were analyzed for gas products derived from coal gasification and combustion processes.

分析了煤气化和燃烧过程的气体产物中汞形态转化的条件,以及烟气中硫和氯元素对汞排放的影响。

28. Analyses of the age distribution of duplicate genes in diverse flowering plants indicate that essentially all may be paleopolyploids, but this should not be equated with the polyploid speciation rate.

分析在不同开花植物的重复基因的年龄分布表明，基本上可能都是古多倍体，但这不应当等同于多倍体的物种形成率.

29. Bifurcation -- The graphical representation in a phylogenetic tree of an evolutionary speciation event whereby an ancestral taxon splits into two.

分歧点--在演化的种形成事件中，物种由相同来源一分为二，其在种系发生树中的图示点。

30. Bifurcation －－ The graphical representation in a phylogenetic tree of an evolutionary speciation event whereby an ancestral taxon splits into two.

分歧点－－在演化的种形成事件中，物种由相同来源一分为二，其在种系发生树中的图示点。

31. Analysis of Primary Chemical Speciation

初级形态分析

32. Speciation of Zn, Mn, Fe, Ca, Mg in Ligusticum wallichii Franch was analyzed by atomic absorption spectrometry.

利用原子吸收分光光度法对中药川芎中锌、锰、铁、钙、镁五种元素的形态进行了研究。

33. Weiping Yang, Zhujun Zhang, Wei Deng. Speciation of chromium by in-capillary reaction capillary electrophoresis with chemiluminescence detection.

化学与材料科学学院毛细管内反应和毛细管电泳化学发光检测测定铬形态。

34. Keywords Speciation;Hexapole collision cell;HPLC-ICP-MS;Arsenic;Selenium;

化学形态;碰撞池;液质联用;砷;硒;

35. Concentration level of TSP and chemical speciation of ion species in Beijing

北京市大气颗粒物的浓度水平和离子物种的化学形态

36. Phosphorus speciation in the sediments of the Bohai Sea and North Yellow Sea

北黄海与渤海沉积物中磷形态的分布特征

37. The shallow depth of the lakes and channels and partial isolation of some areas probably encouraged these high speciation rates.

另外，湖泊、河道深度较浅，加上部份地区的相互隔离，或许也助长了物种形成的速度。

38. The test method used here for mercury speciation was the Ontario Hydro Method.

另外，较高的烟气排放温度会提高单质汞向氧化态汞转化的转化率，Hg浓度升高汞转化率下降。

39. Sympatric speciation refers to the formation of two or more descendant species from a single ancestral species all occupying the same geographic location.

同域物种形成指的是由一个祖先物种形成两个或两个以上的后裔物种，所有物种都居住在同一地理位置。

40. Meanwhile, the results also indicate that AAS is a good method for analyzing the speciation of heavy metals.

同时说明原子吸收光谱法完全可以用来研究重金属形态特征,在环境研究中具有重要意义。

41. Speciation and Treatment of Pollution on Wastewater of Monosodium Glutamate

味精废水中污染物的形态分析及处理研究

42. The uranium geoanalysis methods currently used for elements,nuclides,isotopes, speciation,micro zone,fluid inclusion and organic compounds are reviewed.

回顾了目前铀矿地质分析测试所使用的元素分析技术、核素和同位素分析技术、元素形态分析技术、微区分析技术、流体包体与有机成分分析技术。

43. Keywords soil;lead;speciation;bioavailability;Tongling City;

土壤;铅;形态;生物有效性;铜陵市;

44. Keywords soils;cadmium;speciation;bioavailability;Tongling city;

土壤;镉;形态;生物有效性;铜陵市;

45. STUDY ON THE CONTENT OF LEAD IN SOIL AND ITS CHEMICAL SPECIATION

土壤中铅的含量及其化学形态分析

46. Chemical speciation of elements in sediments and soils and their sequential extraction process

土壤和沉积物中元素的化学形态及其顺序提取法

47. In sympatric speciation, species diverge while inhabiting the same place.

在同域物种形成中，居住在同一个地方的物种分歧化。

48. In some fungi, there is evidence of incipient speciation

在某些真菌中，有新发生的物种形成的证据。

49. In plants, polyploidy must be included in any view of speciation.

在植物中，任何物种形成观念都必须考虑多倍性。

50. The distribution and speciation of boron in boron sludge are then analyzed by continuous extraction with different solvent.

在此基础上,选用不同的溶剂,通过连续浸取方法对硼泥中硼的分布及形态进行分析。

51. In each case, the number of species observed today suggests that these traits have also led to rapid speciation, at a rate previously seen only in African cichlids.

在每一个例子里，今天所观察到的物种个数提示这些特性也已导致快速的物种形成，这种速率以前只在非洲丽鱼科鱼类中被观察到。

52. The chemical speciation of arsenic in the stratified water column in Mono Lake may be explained by microbial arsenic cycling by tight coupling between CAOs and DARPs.

在盐碱湖莫诺(Mono)湖中砷的不同价态分层存在,CAO与DARP的紧密偶联共同参与了莫诺湖中的砷的地球化学循环。

53. Genetic drift is often proposed to play a significant role in peripatric speciation.

在边域性物种形成中，遗传漂变常被认为会发挥重要作用。

54. In parapatric speciation, the zones of two diverging populations are separate but do overlap.

在领域性物种形成中，两个正在分歧化的群体的地域是分开的，但有重叠。

55. Speciation of Pu evolved from PuO 2 +?Pu(OH) 5 - to coexistence of Pu(OH) 5 -, Pu 3+ and PuSO 4 +, and than Pu(OH) 5 - ?Pu 3+ . Sr 2+ keeps steady in the course of WRI, on the other hand.

地下水 黄土相互作用过程中钚的存在形式的变化基本上遵循渐变的规律。 由反应初期以PuO2 +为主 ,次为Pu(OH) 5- ,逐渐过渡到Pu(OH) 5- 、Pu3+和PuSO4 +共存 ,到反应后期则以Pu(OH) 5

56. A significant association may result from either increased speciation or reduced extinction.

增加物种形成或降低灭绝速率可导致一个意义重大的联合。

57. Polyploidy is a mechanism often attributed to causing some speciation events in sympatry.

多倍性常被当作引起在同一地区并存的物种发生物种形成事件的一种机制。

58. The origin of such large amounts of constitutive heterochromatin and their role in karyotype evolution and speciation remain a mystery.

如此大量的结构异染色质的来源及其在染色体组型进化和物种形成中的任务仍是一个谜。

59. The data treatment and speciation study werecarried out with MINIQUAD and ESTA programs at HONEYWELL DPS-8computer.

实验数据与络合粒子模型的研究是用MINIQUAD和ESTA计算程序处理的。

60. The result had supplied a reference data for the further studies of pharmacy and speciation of metallic elements.

实验结果为微量元素的形态分析及其对药理作用的贡献提供参考数据。

61. The results supplied a basis for the further studies of pharmacy and speciation of metallic elements.

实验结果表明，金属元素在药材中的存在形态有较大差异，为进一步进行金属元素形态分析打下基础。

62. In this paper the forward displacement analysis of a speciat Stemard-Gough platform by transforming the equations describing the problem into the matrix eigen- problem is presented.

对于描述一类并联机构正解计算的方程组，通过化成矩阵特征问题的手段计算正解。

63. The main exceptions to this are hybrid and polyploid speciation.

对于这一点，最主要的例外是杂种和多倍体物种。

64. Reinforcement is required for both parapatric and sympatric speciation.

对于领域性的和同域性的物种形成，强化是必需的。

65. Some methods in speciation analysis of arsenics are reviewed, including high performance liquid chromatography, capillary electrophoresis, gas chromatography and spectral analysis.

对光谱分析法、高效液相色谱法、毛细管电泳法以及气相色谱法在砷形态分析中的应用进行了评述,比较了各种方法的优缺点。

66. The methods for testing As,Sb,Se of different valency by atomic fluorescence spectrometer(AFS) were optimized and the speciation methods of AFS were presented.

对玩具、铅笔中可溶性砷、锑、硒的形态分析方法进行了研究,对原子荧光光谱法测定不同价态砷、锑、硒的方法进行了优化,建立了砷、锑、硒的原子荧光光谱形态分析方法。

67. We know surprisingly little about the speed of plant speciation, although studies of contemporary volution implye that reproductive barriers can arise rapidly.

尽管关于同时代进化研究暗示说生殖隔离可以迅速地出现，但令人惊讶的是，我们对于物种形成的认识仍知之甚少。

68. Despite theoretical doubts about their importance in speciation, chromosomal rearrangements often contribute to the sterility of hybrid plants (18, 19).

尽管在理论上对于染色体重排在物种形成中的重要作用仍有怀疑，但是染色体重排常常促使植物的杂种不育（18，19）。

69. Keywords Ligusticum wallichii Franch;element;speciation analysis;

川芎;金属元素;形态分析;

70. Keywords Chaohu lake;sediments;phosphorus speciation;

巢湖;沉积物;磷形态;

71. Chemical Speciation and Total Concentration of Heavy Metals for Sediments from Lake Chaohu

巢湖表层沉积物中重金属总量及形态分析

72. The technique has been widely used for the speciation of environmental and biological samples.

已广泛应用于环境、生物等样品的元素形态分析。

73. What's more, the work suggests that some duplicate genes play a key role in the evolution of new traits and in speciation.

并且，研究工作表明，一些复制的基因在新的特征进化和物种形成过程中起到非常重要的作用。

74. An interface technique coupled high performance liquid chromatography with atomic fluorescence spectrometry for mercury speciation analysis is established.

建立了高效液相色谱与原子荧光光谱联用测定汞化合物形态的分析方法。

75. Speciation of Soluble Arsenic Stibium and Selenium in Coating Paint on Toys[J].

引用该论文 何桂华,赵建忠,郑新华,包海英.

76. speciation analysis trometry

形态分析

77. Keywords speciation;soil;molybdenum;furnace atomic absorption spectrometry;

形态分析;土壤;钼;石墨炉原子吸收;

78. analytical speciation methods

形态分析技术

79. Speciation is a popular research in the field of modern environmental analytical chemistry,in which organometallic speciation is spectacular,especially.

形态分析是现代环境分析化学领域的一个热门研究方向，有机金属化合物形态分析尤其引人注目。

80. Application of Microwave Extraction for Fractionating Heavy Metal Speciation in Sewage Sludge

微波萃取法用于污泥重金属形态的区分