molecular cluster 中文意思是什麼
molecular cluster
解釋
分子簇-
A small nugget of cold molecular hydrogen, called a bok globule, is silhouetted against the star cluster
一個叫「博克球狀體」的冷氫「小金塊」逆著該星團形成剪影。 -
Calculated with nei ' s formula and the unweighted pair - group method with arithmetic averages ( upgma ), the cluster analysis results demonstrated that the classification of seven strains of spirulina platensis with rapd markers is consistent with some of their physiological and biochemical characters as well as some molecular biological characteristics
用nei 』 s公式與歐氏距離類平均法對此擴增結果進行聚類與親緣關系分析。結果表明， rapd分類結果與7株材料的某些生理生化和分子生物學特性相吻合。 -
In this work, some species of palmae cultivated in the xiamen botanical garden had been selected to be analyzed their genetic diversity with rapd ( random amplified polymorphic dna ) technique. according to the result of genomic dna amplified with pcr ( polymerase chain reaction ), genetic distance and similarity between different palm species were calculated on nei " s estimate of similarity and genetic distance. a primary but first time research at the phylogenetic relationships of some genera and species, the molecular classification and identification of some puzzling species of palmae was carried out through upgma ( unweighted pair group mean average ) cluster analysis of the genetic distance together with comparative study of the morphological structure characteristics
本文在初步調查分析了棕櫚科植物在我國的自然分佈、引種馴化情況以及該類植物在廈門地區栽培應用狀況的基礎上，首次採用rapd分子標記技術，對廈門萬石植物園引種的一些棕櫚科植物的遺傳多樣性進行了研究，根據pcr對基因組dna擴增的結果，用nei ' s相似性系數計算了不同植物間的遺傳距離和遺傳一致度，通過對遺傳距離的upgma聚類分析，並結合形態分類的特點，對棕櫚科植物的屬、種間的系統分類關系和一些疑難種的分類鑒定進行了初步研究。 -
Thermocycled pcr samples were resolved electrophoretically on 1. 5 % agarose gels and taken photos using a polaroid camera. the statistical results were analyzed by the spss software, and the cluster figures were obtained. conclusions could be drawn from the study as following : 1 ) the molecular systematics of 57 species of crickets, which belong to 26 genera 7 family in grylloidea, had been studied by the approach of rapd
本項研究在依據外部形態分類鑒定及前人工作的基礎上，採用rapd技術，通過對蟋蟀總科7科26屬57種蟋蟀基因組dna的rapd圖譜的比較研究，在分子水平上探討這些類群的分類地位和親緣關系，為豐富蟋蟀總科的分子系統學研究，並為進一步完善蟋蟀總科的分類系統，揭示其系統發育及演化提供分子水平的依據。 -
The number density distribution of globular cluster in space will change with time due to the dynamic evolution, especially for those in the central region of the galaxy ; 5. for the power law initial cluster mass function, the peak value of the mass function after the dynamic evolution is sensitive to the lower limit of the initial mass function we adopt. the suggested value in this paper is - 104m, which is consistent with that reduced from the dynamical analyses for the giant molecular clouds
對于冪率的初始質量譜，球狀星團系統動力學演化后質量分佈的轉折點質量主要是由初始質量函數的質量下限決定的，最為適合的值為10 ~ 4m _ ；冪率的初始質量譜的譜指數對球狀星團系統動力學演化后質量分佈的轉折點質量也有影響，其最佳值為1 . 5 2 . 0 ；經過大約5gyr的動力學演化，冪率的初始質量譜就會演化成為高斯的對數質量分佈並具有在隨后的動力學演化中保持對數高斯形式質量分佈的特性。 -
Structures of the camp fibers were also discussed. the results showed that the hydrogen bonding between the pva and caa damaged the regularity of crystalline field and the crystallinity of the fibers reduced. the cluster structures of each phase in the blend were changed and movement of the molecular chain segment was reduced
對camp纖維結構的研究表明， pva與丙烯酸-丙烯酰胺共聚物（ caa ）共混后，大分子間的氫鍵作用破壞了pva晶區結構的規整性，導致pva在camp纖維中的結晶性明顯減弱；兩種共混組分的聚集態結構發生變化，大分子鏈段運動受到影響。 -
The structure and properties of interfacial region of liquid crystals ( i. e the layers adjacent to a solid walls ) are obviously affected by the solid walls. therefore, the investigations of interface properties of liquid crystals have significance of theory and extensive prospect of application in this paper, the molecular field theory and a two - particle cluster theory are presented to study thin nematic liquid crystal films confined by two type solid substrates, respectively
目前液晶被廣泛用於光電顯示器中，固體界面對液晶界面層（鄰近基板表面的液晶層）的結構、性質有較大的影響，因此，對液晶與固體表面間的界面物理性質和規律研究，具有重要的理論意義和廣闊的應用前景。 -
The result of cluster analysis showed that the materials with fewer morpholo - gical difference and nearer geographical distribution had nearer relationship. this result was in keeping with the result of morphology on the whole and could provided molecular basis for the systematic study of ceratoides. l plants. the deterioration of seed was due to two reasons
植物材料間rapd變異大，遺傳多樣性豐富，聚類分析結果表明，形態差異較小，地理分佈區域較近的材料親緣關系較近，其結果與形態學的研究結果基本一致，可為駝絨藜屬植物的系統研究提供分子水平上的依據。 -
A computer simulation tracing study for the rapid cooling process of electronic material ga system consisting of 1000 atoms has been performed by using molecular dynamics mothod. adopting the honeycutt - andersen ( ha ) bond - type index method and the cluster - type index method, the bond - types and the basic cluster configurations formed by metal ga atoms have been analyzed
採用分子動力學方法對由1000個原子組成的電子材料ga原子系統的快速凝固過程進行了計算機模擬跟蹤研究，運用ha鍵型指數法和原子團類型指數法分析了原子尺度上ga的成鍵類型和形成的基本原子團結構。 -
Clusters are the aggregates of a few to thousands atoms or molecules or ions their properties are neither like those for individual atoms nor the corresponding bulk and therefore clusters are named " the fifth state of the matter ". during the development of cluster science, many concepts and methods have been introduced from nuclear physics, condense matter physics and quantum chemistry, cluster science has became an new interdisciplinary field between atomic - molecular physics and condensed matter physics
團簇（ clusters ）是由2 104個原子、分子或離子通過物理或化學結合力組成的相對穩定的微觀和亞微觀聚集體，它的空間尺度在幾a至幾百a范圍內，被人們看作是介於原子分子和宏觀固體之間物質結構的新層次，並稱之為物質的「第五態」 。
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