突變段 的英文怎麼說

中文拼音 [tūbiànduàn]
突變段 英文
audden transition
  • 突 : Ⅰ動詞1 （猛沖） dash forward; shoot out 2 （高於周圍） protrude; bulgeⅡ副詞（突然） abruptly; sud...
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  • 突變 : 1 （突然急劇的變化） sudden change; change suddenly; transilience; accident; saltation; revulsion...
  1. The sequence analysis revealed that the as1 gene encodes a myb protein, which is a candidate transcription factor. in as1 and as2 mutants, the polarity formation in leaves is defective. cell differentiation along abaxial - adaxial, proximal - distal and media - lateral axes all shows an insufficient fashion

    通過掃描電鏡、干涉相差顯微鏡、組織切片、過量表達等手段研究了as1和as2的功能，包括觀察觀察突變體的組織、細胞結構及早期發育狀況，同時採用gus表達、 rt - pcr 、原位雜交、 northern等手段分析基因的表達情況。
  2. It is a fast - developing era for the telecommunication technologies nowadays. the life - period of these products is so short that this market appears fluky

    在電信技術一日千里高速發展的今天，高技術手段層出不窮，電信設備的產品生命周期大大縮短，市場風雲突變。
  3. Mutations in wnk4 are missense mutations in the coding sequence near the coiled - coil domains

    Wnk4基因突變是位於coiled - coil區域附近一段高度保守區域的錯義突變。
  4. We obtain two recessive monogenic salt - tolerance mutants from co60 - - mutagenized arabidopsis thaliana m2 populations. the effect of nacl on the structure of vegetative organa in arabidopsis thaliana was further studied and through a rapd analysis on salt - tolerance mutants of arabidopsis thaliana, a 1200bp dna fragment probably related to the salt - tolerance gene was get

    本實驗以模式植物擬南芥（ arabidopsisthaliana ）為材料獲得了隱性單基因抗鹽突變體，並研究了不同濃度的nacl脅迫對擬南芥營養器官結構的影響，進而通過對突變體的rapd分析，獲得了一個與植物抗鹽性有關的1200bp大小的基因片段。
  5. A match at 10 fast - mutating sites is outvoted by a discrepancy at one slow - mutating site, dr. tyler - smith said

    根據泰勒史密斯說，即使在快速突變區段發現了十個完全相符的基因特徵，只要在緩慢突變區段發現到一個不符，就足以否定兩者之間的關系。
  6. We clone a 1. 3kb promoter sequence of the homologous gene in arabidopsis by pcr. this promoter is shown to direct the specific expression of the reporter gene, b - glucuronidase ( gus ), in trichomes of arabidopsis. promoter deletion analysis reveal that the region from - 300 - - 1 bp is sufficient to direct trichome - specific expression

    對其進行缺失突變，構建5個缺失表達載體轉基因擬南芥，葉片gus定量測定分析表明- 300bp ? - 1bp序列就可以指導gus基因在表皮毛細胞中特異表達，說明這段序列可能含有指導此啟動子在擬南芥表皮毛細胞進行特異表達的核心序列。
  7. Four out of 150 random primers could detect dna polymorphism between the two mutants and the wild type arabidopsis thaliana, which provided a strong evidence for the truth of the mutants. only one primer gave a specific dna fragment about 1200bp which two mutants own but the parent do n ' t. we drew a preliminary conclusion that the fragment might be related to the salt - tolerance gene

    擬南芥抗鹽突變體的rapd分析結果表明， 150條引物中有四條引物在突變體和野生型擬南芥之間擴增出多態性，證明了dna水平突變的發生，其中1條引物在突變體的擴增產物比在野生型的擴增產物多出一個大小約為1200bp的片段，初步認為該片段可能與植物的抗鹽性有關。
  8. It is possible that exogenous dna fragment integerated into acceptor genome, changing gene base sequence or base deletion or base insertion, inducing to mutant at gene level

    這可能是外源dna片段整合進受體的基因組中，改變基因的順序或者引起基因堿基的缺失、插入，從而在基因水平上發生突變。
  9. It was interested that there was an extra six nucleosides insertion between 1647 - 1652nt ( according to the genomic sequence of la sota strain ), and the sequence were cccccc in f48e9 strain, and tcccac in zj1 strain. in order to test if insertion of this six nucleosides is related with the virulence of nd, two primers were designed to amplify the same fragment of another ten ndv strains. the result of sequence comparison of 16 strains showed that the six nucleoside was absent in lentogenic strain. this suggested that the six nucleosides insertion might have relationship with the ndv virulence. compared with all known sequence of ndv. there was a special sequence ( 5 ' tctctctcctctctcctcc3 " ) in the genomic cdna of ndv f48e9 strain

    通過rt - pcr方法擴增獲得了另外10個背景清楚毒株的np - p基因間隔區片段，將這些序列與f48e9 、 lasota 、 clone30 、 b1 、 zj1和v4的相應序列進行了比較，結果在參比的16個ndv毒株中在該區段中除了有多個點突變外，個別毒株有堿基插入和缺失，所有以lasota株為代表的弱毒株均無6堿基的插入，而以f48e9株為首的強毒株均有此6堿基的插入，但有一個中等毒力的毒株dp沒有6堿基的插入，不過它的基因序列和lasota的幾乎相同，對于所克隆到的基因的代表性還有待確定。
  10. The nucleotide ( nt ) sequence of the insert in phz1754 is 2299bps in size. computer assisted analysis of the sequence revealed an open reading frame ( orf ) with a g + c content of 70. 3 % that would encode a protein of 552 amino acids ( aa ). the nt seque nce comparision revealed that the orf in the sequenced region exhibits 85 % dna sequence homology with the cholesterol oxidase gene choa of streptomyces sp

    對phz1754進行外切核酸酶（ exonuclease ， exo ）順序缺失，獲得單向長度漸減重疊的系列突變體，核苷酸序列測定顯示出該ecor - sal片段的精確大小為2299bps ， frameplot程序分析揭示出該區域一個完整的開放閱讀框（ orf ）的存在，其大小為1656bps ， g + c含量為70 . 3 ，編碼552個氨基酸，利用blastsearch程序將orf的核苷酸序列及推導的氨基酸序列與因特網上基因及蛋白質數據庫進行綜合比較，發現無論在核苷酸水平還是在蛋白水平上，該orf均與膽固醇氧化酶表現出同源性，而且與鏈黴菌膽固醇氧化酶同源性最高，說明該orf編碼膽固醇氧化酶基因。
  11. Result shows that summer precipitation in north china has gone through four major dry - damp phases, richer periods from 1900 to 1915 and from 1946 to 1978, less periods from 1916 to 1945 and from 1979 to 2001, and has obvious inter - decadal variations, and has about 60a, 20 - 30a, 10a major periods and has twice abrupt changes in 1953 and 1979

    結果表明：華北夏季降水經歷了四個主要干濕階段，即1900 1915年和1946 1978年為多雨期， 1916 1945年和1979 2001年為少雨期，具有明顯的年代際變化，主要有約60年、 20 30年和10年左右的周期，並在1953年和1979年發生了兩次氣候突變。
  12. A strong decadal change of the meiyu periods in the mid - lower yangtze basin occurred in late 1970s since 1885 : a weak meiyu stage in 1959 - 1978 abruptly transformed into the strong one during 1979 - 1999

    摘要1885年以來長江中下游梅雨期在70年代末發生了一次強年代際突變：從1958 - 1978年的弱梅雨時段突變為1979 - 1999年的強梅雨時段。
  13. Through analysis, it is found that the preceding factors effecting the inter - annual changes of meiyu in above 2 stages are also very different from each other

    研究了兩時段梅雨盛行趨勢突變的成因，發現與顯著增強的人類活動有關： 20世紀70年代末，我國工業開始大發展，大氣污染的增長導致地面太陽輻射減少，中國北方沙化土地面積又迅速擴大。
  14. The research showed that : from january to march, the acreage average ozone gross gathered, which was synchronized with the increase of the frequency of strong ssw event. furthermore, the change tendency of ozone gross in the atmosphere break forward and backward 1990. after the1990s, ozone gross in the atmosphere appeared negative anomaly in the mid and high latitude of north hemisphere from january to march, which was consistent with the obvious descent of appearance frequency of strong ssw event after the 1990s

    分析表明： 1至3月，臭氧總量的面積平均逐漸增高，這與強ssw事件頻數1至3月增高同步；此外，大氣臭氧總量趨勢變化以1990年前後存在明顯的突變， 90年代以後，北半球中高緯1 ? 3月間大氣臭氧總量處于負異常階段，這和90年代以來強ssw事件發生頻數明顯下降相吻合。
  15. Sequence analysis showed that, this fragment has a homology of 99 % to the previously reported choe from rhodococcus equi. after cloning and subcloning and three identical fragments were obtained from three independent pcr, lacking three continual bases ( ttc, encoding the pheamino acid ) compared with choe, thus it can be assumed that the new fragment, designated as choew, and choe belong to the same gene family, even it might be the natural mutation of choe

    對片段進行克隆、亞克隆之後測序分析，發現與已克隆的來源於馬紅球菌的膽固醇氧化酶基因cboe有99的同源性；並且三次獨立的pcr均得到相同的片段，所克隆的基因序列與choe相比，連續缺失三個堿基（ ttc ） ，即相應的氨基酸序列缺失一個氨基酸（ phe ） ，因此判斷所克隆的基因片段與choe屬同一基因家族或原有基因的天然突變體，命名為choew 。
  16. In order to analytically deduce the characteristic scaling law, we have constructed a simplified piecewise linear model that describes the characteristic phenomenon so that we can quantitatively and analytically deduce the sudden change of the rules of the fractal dimension of the strange repeller and the averaged lifetime in the region occupied by the original attractor at a critical parameter value when the repeller disappears

    為了解析地導出這種激變的特徵標度律，我們構造了一個描述這種特徵現象的簡化分段線性模型，並藉助它定量地解析描繪了當奇異排斥子在臨界參數值消失時，奇異排斥子的分數維和在原混沌吸引子區域迭代的平均生存時間的突變。
  17. The constructed vector was identified by sequencing. after induction by iptg, four polypeptides coding epitope expressed, respectively. research in this dissertation laid foundation for the development of nd - epitope - vaccine

    經測序鑒定與原序列沒有突變及移碼后，經iptg誘導，有四段含表位的多肽獲得了表達。
  18. Pgxn217 was transferred into bradyrhizobium japonicum strain gx201 by triparental mating using the helper plasmid prk2073. marker exchange was achieved by selection on yma containing sm, km, gm, spc et al four kinds of antibiotics. mutants were confirmed by southern blotting and hybridization with the wild - type region and the tn5 fragment respectively

    隨后，利用突變質粒pgxn217誘變慢生型大豆根瘤菌菌株gx201 ，獲得了gx201的突變體菌株gx217 ；將pgxn201的3 . 4kbecori片段與plarf3連接獲得亞克隆pgxn201cl ，然後將pgxn201cl導入突變體菌株gx217 ，構建了gx217的功能互補菌株rgx217 。
  19. The result of nanoscratching modeling showed that the load on the sample and friction force increased linearly at the initial stage. the load on the sample and the friction force increased suddenly when the film hardened

    納米劃痕實驗的數值模擬表明， ti - dlc膜在壓頭劃痕初始階段，縱向載荷和摩擦力都呈線性緩慢增加，在某一點發生突變，這時膜發生了硬化。
  20. We sequence the inserted gene fragment of the indentified recombinant clone. the result is : angiostatin gene orf ( open reading frame ) links with the orf in expression vector correctly. but the first base of the codon aaa coding for lys414 in plg kringle 4 domain mutates from a to g which leads lys change to glu

    隨后取通過上述鑒定的重組克隆菌，對重組子插入片段測序，結果為： as基因開放讀碼框與表達載體的讀碼框正確匹配相連，但在其kringle4區相當于編碼plg的lys ~ （ 414 ）密碼子aaa的第一位堿基由a突變為g ，導致相應的氨基酸殘基突變為glu 。
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