突變性質 的英文怎麼說

中文拼音 [tūbiànxìngzhí]
突變性質 英文
emergent properties
  • 突 : Ⅰ動詞1 （猛沖） dash forward; shoot out 2 （高於周圍） protrude; bulgeⅡ副詞（突然） abruptly; sud...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  • 突變 : 1 （突然急劇的變化） sudden change; change suddenly; transilience; accident; saltation; revulsion...
  1. The fusion protein was bactericidal active against staphylococcus aureus. in present study, we will truncate the none channel - forming do main, then attach the agrd to the pore - forming region ( k544 - i626 ) to construct a new engineered multidqmain protein machine - compact engineered peptide targeting staphylococcus aureus. such engineered peptide was constructed by linking the gene of staphylococcal agrd pheromone with the gene of c - terminal ( 1626 ) of colicin la pore - forming region ( k544 - i626 ) with site - directed mutation

    利用點突變方法將金黃色葡萄球菌信息素agrd （ i型， ystcdfim ）的基因引入到大腸菌素fa梭基端1626基因上，並將限制性內切酶sacl酶切位點基因分別引入到大腸菌素fa的p4和k544上，通過酶切、膠回收、連接獲得含大腸菌素ia水性孔道結構域和金黃色葡萄球菌信息素agrd基因的重組質粒。
  2. Parkinson ' s disease arises from genetic and possibly neurotoxic causes that produce massive cell death of the neuromelanin - containing dopaminergic neurons of the substantia nigra

    帕金森氏病的病因包括基因突變和神經毒性物質作用，導致黑質多巴胺能神經元大量的死亡。
  3. The main results obtained from this work are as follows : 1. the penicillium. sp ds9701, a strain of degrading phb, was mutagenized by uv treatment

    本項工作主要是篩選能高效降解phb的突變株，並對其進行酶學性質的研究，主要結果如下： 1
  4. Fast algorithms of both discrete and orthonormal wavelet and wavelet packet coefficient are diagrammatized to be introduced. daubechies wavelet is applied to help to discuss the application and test on signal filtering and noise reduction with the principle and threshold implementation ; the basic principle to pickup the fault characteristics is introduced mainly about the relations between the maximum module and signal saltation point and how to characterize the saltation point with lipschitz exponent

    展示了離散正交小波變換的mallat快速演算法和小波包系數分解的快速演算法；重點應用daubeches小波探討了小波變換在信號濾波去噪中的應用和實驗，闡述了其基本原理和通過閾值化處理實現濾波的具體方法；探討了用小波變換進行故障特徵提取的原理，說明了小波變換模極大值和信號突變點之間的關系以及怎樣用李氏指數來表徵突變點的性質。
  5. The seven sisters that dr de grey wishes to slaughter with sens are cell loss, apoptosis - resistance ( the tendency of cells to refuse to die when they are supposed to ), gene mutations in the cell nucleus, gene mutations in the mitochondria ( the cell ' s power - packs ), the accumulation of junk inside cells, the accumulation of junk outside cells and the accumulation of inappropriate chemical links in the material that supports cells

    德?戈瑞博士想用這一策略對付的七個因素是：細胞丟失，細胞凋亡阻抑（細胞拒絕程序死亡的傾向） ，細胞核內的基因突變，線粒體（細胞的「動力倉」 ）中的基因突變，細胞內的垃圾堆積，細胞外的垃圾堆積和細胞支持性物質中不當化學鍵堆積。
  6. The topics include : structure and function of genes, chromosomes and genomes, biological variation resulting from recombination, mutation, and selection, population genetics, use of genetic methods to analyze protein function, gene regulation and inherited disease

    主題包括：基因、染色體與基因組的結構和功能；來自於基因重組、突變和篩選的生物變異；族群遺傳學；運用遺傳學的方法分析蛋白質的功能，基因的調控和遺傳性疾病。
  7. In escherichia coli, arog gene encodes phenylalanine - sensitive 3 - deoxy - d - arabino - heptulosonate - 7 - phosphate synthase isoenzyme arog that catalyzes the first committed step of shikimate pathway. here we study the essential amino acid residues involved in the formation of feedback inhibition site of arog, and the effects of n - terminus on feedback inhibition and its quaternary structure, and the importance of the structural " d2 " symmetry to allosteric inhibition

    本博士論文工作以大腸桿菌k - 12來源的arog為研究對象，通過定點突變、反饋抑制實驗和酶學動力學參數的測定，深入地研究了arog的反饋抑制位點的特性，並對arog的n -末端在反饋抑制機理和維持穩定四級結構中的作用，以及蛋白質結構的「 d2 」對稱性對酶功能的重要性等進行了具體的研究。
  8. Protein engineering and site directed mutagenesis have been used to change the active site and alter the substrate specificity of various hydroxynitrile lyases

    研究人員已經利用蛋白質工程和定點突變技術來改變各種醇腈酶的活性位點和底物特異性等。
  9. Dominant negative alleles of gpil7p were produced by random pcr mutagenesis of three conserved fragments of gpi17p : 1 ) having generated the plasmid library which contains 100000 plasmids harboring gpi17 mutants then screened from 8000 clones, we got 25 strong and 3 very strong dominant negative alleles

    對gpi17p可能的三個保守區進行了pcr隨機誘變，並最終獲得顯性負性等位基因： 1 ）組建了gpi17p突變體質粒庫，其所含質粒數約為100000 。
  10. The morphological, physiological, biochemical and genetic diversities between bacillus thuringiensis wild - type strain ybt - 1463 and its plasmid - free mutant bmb171 was comparatively studied. it showed that the plasmid - free mutant strain bmb171 lost the ability to form the parasporal crystal, but there was on obvious diversities were observed on the sensitivity to 10 antibiotics, the utilization of 19 carbon sources and 12 nitrogen sources, as well as the growth properties between ybt - 1463 and bmb171, whereas the electro - transformation frequencies of bmb171 were much higher than those of ybt - 1463, respectively with 5 exogenous plasmids as the donor dnas

    對出發菌株ybt - 1463和其無質粒突變株bmb171的部分形態、生理生化和遺傳學特性進行的比較研究的結果表明，突變株bmb171不形成伴胞晶體，但在個體形態與菌落特徵、對紅黴素等10種抗生素的敏感性、對葡萄糖等19種碳源和谷氨酸等12種氮源的利用能力及生長性能與出發菌株ybt - 1463無明顯差異。
  11. 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。
  12. Because the data mutate on the position that is the edge, the normal curvature on some orientation changes from positive to negative. so it is thought whether some point is judged the edge - point by this character

    由於邊緣是圖像上像素發生突變的位置，所以在圖像曲面上某一方向的法曲率值會出現由正到負的變化，故此應用這個性質來判斷曲面上某點是否為邊緣點。
  13. In our laboratory, a unique mutation detection system using a shuttle vector plasmid has been established to demonstrate that a low concentration of mnng ( 0. 2 m ) can induce nontargeted mutation in mammalian cells : the mammalian cells were exposed to 0. 2m mnng for 2. 5h, then a shuttle plasmid pz189 carrying supf trna gene was transfected into cells after 24h culture. we found a 5 - fold higher mutation frequency of the plasmid replicated in pretreated cells than the spontaneous mutation frequency of the plasmid replicated in control cells. this kind of mutation did not occur immediately after mnng exposure

    我們實驗室曾用一特殊的突變檢測系統，直接證明dna損傷劑可在哺乳動物細胞誘發非定標性突變：首先用低濃度（ 0 . 2 m ）的短壽烷化劑mnng （半壽期為1 . 1hr ）處理細胞2 . 5h后，繼續培養24h ，將重組有用作突變檢測的靶基因supftrna基因的穿梭質粒pz189轉入細胞復制，發現在未受致癌物直接攻擊的穿梭質粒中有較自發突變率高5倍以上的靶基因突變。
  14. A few mutants were found on the plate containing nitrobenzene selective medium. their colony appearances have some difference from the wild strain. some evidences show that their growth characteristics on the selective medium are related to the plasmids harbored in their cells

    對菌株的自發突變株的研究表明，這些菌株在硝基苯選擇培養基上的生長特性是與它們細胞中所含質粒的特性相關的。
  15. Anthropogenic activities ( e. g. development, over - grazing, timber harvest ) can disrupt the structural integrity of oasis - desert landscapes and is expected to impede diversity communities across the landscape and make it fragmented. with human dimension and activities enhancing, the patchiness grain, edge density and landscape contrast become large, landscape diversity and patch fractal dimension decreased

    隨著人類活動的增強，斑塊粒度、邊緣密度、分散度、對比度變大，而景觀多樣性下降，斑塊分維數變小，人類生產經營活動導致了綠洲-荒漠景觀破碎化，綠洲和荒漠生態系統界面上的突變性、對比度和異質性增強。
  16. At the initial stage of planar technique, b was employed as ideal diffusion impurity in base - region of npn si planar devices because of the match of its solid - solubility and diffusion coefficient in si with those of p in emission - region, and the good shield effect of sio2 film to b. but because of the relatively large solubility ( 5 1020 / cm3 at 1000 ) and the small diffusion coefficient, the linear slowly - changed distribution of acceptor b in pn junction can not be formed, which could not cater to the requirement of high - reversal - voltage devics. thereafter b - a1 paste - layer diffusion technology and close - tube ga - diffusion technology had been developed, while the former can lead to relatively large the base - region deviation and abruptly varied region in si, which caused severe decentralization of current amplification parameter, bad thermal stability and high tr ; the latter needed the relatively difficult pack technique, with poor repeatability, high rejection ratio, and poor diffusion quality and productio n efficiency

    在平面工藝初期，由於b在硅中的固溶度、擴散系數與n型發射區的磷相匹配， sio _ 2對其又有良好的掩蔽作用，早被選為npn硅平面器件的理想基區擴散源，但b在硅中的固溶度大（ 1000時達到5 10 ~ （ 20 ） ，擴散系數小， b在硅中的雜質分佈不易形成pn結中雜質的線性緩變分佈，導致器件不能滿足高反壓的要求，隨之又出現了硼鋁塗層擴散工藝和閉管擴鎵工藝，前者會引起較大的基區偏差，雜質在硅內存在突變區域，導致放大系數分散嚴重，下降時間t _ f值較高，熱穩定性差；後者需要難度較大的真空封管技術，工藝重復性差，報廢率高，在擴散質量、生產效率諸方面均不能令人滿意。
  17. These patterns of urinary excretion, with the exception of phosphate excretion, are similar to those of edit its with hypertension

    上述之變化與成人突發性高血壓癥病人的尿電解質排泄狀況相似。
  18. The wavelet method used in economic forecast depends on its " mathematics microscope " property. it does the layer analysis and forecast to indicators. it can improve forecast precision, what ' s more it can search and express the structural feature of data such as development cycle, second cycle, especially to some sudden change data which will provide effective and reliable warranty to the complexity and violent fluctuant data indicators in enterprise

    基於小波進行經濟預測的方法依靠其「數學顯微鏡」的特性，對待分析的預測指標進行逐層分析和預測，在提高預測精度的基礎上，能對分析數據對象的結構特徵進行挖掘，分析數據特徵如發展主周期、次周期等，尤其對具有突變性質的數據具有很好的表徵分析能力，這對于企業中復雜的變動劇烈的數據指標的預測能提供有效可靠的保證。
  19. Fourth, the theoretical model of optimum technological growth rate under discrete change is erected. technology is a unique production factor because technological growth experiences a mutation when technological increase accumulates to a certain extent. under this condition, the point - mutation model in tom ’ s mutation theory is applied to explain the phenomenon of technological

    將技術作為不同於勞動和資本的特殊生產要素進行考察，即當技術量的積累達到一定程度時，技術增長會產生突變，在此條件下，運用湯姆突變理論中的尖點突變模型，解釋了技術突變現象，討論了勞動和資本的不同組合變化下，在臨界點附近技術突然躍升或下降的突變性質；構建了技術突變完成後的技術增長率優化理論模型。
  20. Futhermore, essence of immproving financial innovative abilities is accumulating domino effect of innovative abilities, and manifests continue expansion of innovative abilities finally. once its expand a critical number, financial innovative ability will transform completely, and will realize movement in " terraces - steps "

    余融創新能力提高本質上是金融創新能力要素的積累效應，並最終表現為金融創新能力的連續性拓展，一旦拓展到某一臨界值，金融創新能力發生突變性變革，實現金融創新能力的「平臺一臺階」運動。
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