突變測驗 的英文怎麼說

中文拼音 [tūbiàncèyàn]
突變測驗 英文
mutatest
  • 突 : Ⅰ動詞1 （猛沖） dash forward; shoot out 2 （高於周圍） protrude; bulgeⅡ副詞（突然） abruptly; sud...
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 驗 : 動詞1. （察看; 查考） examine; check; test 2. （產生預期的效果） prove effective; produce the expected result
  • 突變 : 1 （突然急劇的變化） sudden change; change suddenly; transilience; accident; saltation; revulsion...
  • 測驗 : test; trial run; examination; testing
  1. Shaking flask experiments and hplc analyses showed that the four mutants no longer produced the toxic oligomycin, and only made four components of avermectins b, which were avermectin b1a, b1b, b2a, b2b. the yields of avermectins b in these mutants were separately equal to those in cz8 - 73. this revealed that olma genes deletion did n ' t affect the biosynthesis of avermectins

    將4株經southern雜交驗證正確的基因缺失突變株進行搖瓶發酵和hplc檢測，發現4個突變株均不再產生寡黴素而僅產阿維菌素b組分，阿維菌素的總產量和b1的產量與出發菌株相當，說明寡黴素pks基因簇的缺失並不影響阿維菌素的生物合成。
  2. By using the complementation test an unknown mutant can be rapidly assigned to a particular gene.

    採用互補測驗可迅速地將某一未知突變型歸屬于某一特定基因。
  3. They were able to confirm which pairs of mutants were allelic and which were not by using the heterocaryon test.

    他們通過異核體測驗可以確定哪些突變型是等位的，哪些是非等位的。
  4. Shaking flask experiments and hplc analyses showed that 99 isolates still produced four components of avermectins b, in which the yields of avermectins b in 82 isolates were only about 0. 1 ~ 2 % of those produced by the parental strain olm73 - 12. 2 of 82 isolates were confirmed to be the correct gene replacement mutants by pcr and sequence analysis. the mutant only producing avermectins bl was not detected

    搖瓶發酵和hplc分析結果表明，有99個突變株仍然產阿維菌素b的4個組分，其中82株的發酵單位很低，僅為出發菌株olm73 - 12的0 . 1 2 ，從中挑取2株經pcr擴增和測序驗證，均發生了正確的基因取代；沒有檢測到僅產b1的突變株，這表明阿維菌素b2組分的產生並不是因為阿維菌素pks上dh2的部分活性所造成。
  5. Methods altogether 97 water samples in dry season and 101 samples in rainy season were collected, and the mutagenicity was detected by the vicia faba root - tip micronucleus test and comet assay test

    方法：採用蠶豆根尖微核試驗和慧星實驗方法，檢測泰興市枯水期97份和豐水期101份水樣的致突變性。
  6. 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。
  7. 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。
  8. Secondly, she builds the index system using patent data and measures the company technical competence, marketing competence, organizing competence and total competence by using improved hiberarchy analytical method. finally, the paper chooses nine electronic companies in the fortune 500 of the world to test the feasibility of the classified patent measurement

    該方法主要利用專利的技術情報和經濟情報功能，主要利用專利指標及其它工業產權相關補充指標，構建了核心能力定量化指標體系，利用突變層次分析法分別從企業技術能力、市場能力、組織能力三方面進行了綜合測度，並選取世界九大家電企業為分析樣本，進行了實證對比分析，驗證了專利指標分類測度法的可行性。
  9. Urban water supply - determination of mutagenesis - salmonella typhimurium mammals microsomal enzyme test

    城市供水致突變物的測定鼠傷寒沙門氏菌哺乳動物微粒體酶試驗
  10. The turbulent flow in open channel is tested with laser - doppler anemometer, in which the longitudinal time average velocity and fluctuating velocity of turbulent flow in open channel under the conditions of the sudden changes of roughnesses at different water depths are measured

    摘要通過激光測速儀，對壁面糙率突變時的明渠紊流進行試驗，測量了糙率突變不同水深情況下明渠紊流的縱向時均流速和脈動流速。
  11. Experimental results show that it is obviously performs well both in in recall and precision

    實驗結果表明，提出的演算法明顯地提高了鏡頭突變檢測的查全率和準確率。
  12. Accordingly this thesis conducts research on the design and management of swimming pools from the running management of its disinfection, reasons and precautionary measures of its water quality mutation in summers and autumns and its water - saving and energy saving. through the participation of the field running management, the literature search, the actual running experience and the theoretical analysis, this thesis forwards drainage & water supply optimization rules for swimming pools. based on field investigation and research on the filtration speed improvement in pressure filters, it is pointed out that there is a wide filtration speed improvement range in pressure filters

    鑒此，該課題從消毒殺菌的運行與管理、夏秋季游泳池水質突變的原因及防治措施以及運行過程中節水節能措施等三個方面對游泳池的運行管理模式進行了研究；通過參與現場管理與文獻資料的研究，結合實踐經驗，進行理論分析，提出了游泳池給水排水的優化設計原則；經現場測試，對壓力過濾器提速進行了研究，指出相對于目前規范值有較大提速潛力；討論分析設計了大型多功能游泳場館水處理間自動化控制管理系統。
  13. Based on rheologic and mutative mechanism of coal and gas outburst, this article discusses the forecast of outburst danger of in 7 ( superscript # ) coal heading face of jinjia mine by adopting coal and gas outburst volume dynamic index after blowing out. it determines the index critical value, and also presents the tentative testing result

    摘要基於煤與瓦斯突出流變突變機理，探討了金佳礦7 （上標# ）煤層掘進工作面採用放炮后落煤瓦斯湧出量動態指標預測突出危險性，確定了指標臨界值，並介紹了初步試驗效果。
  14. This research began with detecting the rpob gene mutations of 37 mycobacterium tuberculosis clinical isolates by polymerase chain reaction - single strand conformation polymorphism ( pcr - sscp ) to study the application value of this method as a new molecule testing method for drug susceptibility

    本研究首先通過聚合酶鏈反應?單鏈構象多態性分析技術對37株結核分枝桿菌臨床分離株的rpob基因進行突變檢測，目的在於探討pcr - sscp作為新的分子藥敏試驗方法的應用價值。
  15. Simulation has shown that the proposed scheme can achieve more accurately in similarity examination than scheme which proposed by [ 102 ]. so the bit number of coded video stream was decreased about 22. 95 percent and thus the compression ratio was improved. although the coding cost was increased about 8. 25 percent by using proposed scheme

    模擬實驗表明，與文獻[ 102 ]方案相比，提出的方案雖然增加了約8 . 25的編碼器編碼耗時，卻有效提高了對視頻序列突變幀的檢測精度，從而進一步降低編碼器端輸出編碼視頻流的比特數達22 . 95左右，在基本不影響重構視頻信息視覺質量的同時提高了編碼器的壓縮效率。
  16. Summer precipitation in northeast china ranging from 1960a to 2000a and ncep reanalysis data is applied to study the temporal and spatial features of summer rainfall and extreme precipitation in northeast china. the results show : 1 summer rainfall in northeast china exhibits upward trend with the cycle variation of 14 years and 2 to 4 years. two abrupt changes occurs in summer rainfall with its happening time on 1964 and 1988 / 89

    利用東北地區99個測站的1960 ? 2000年夏季逐日降水資料，以及ncep再分析資料，採用旋轉經驗正交函數、 morlet小波分析、合成分析等方法分析了東北地區夏季降水的演變特徵和降水異常的環流背景，得出主要結論如下： 1東北地區夏季降水存在著減少趨勢，並且有14年和2 4年的周期存在，降水發生過兩次突變現象，分別發生在1964年和1984 85年之間。
  17. Based on 1960 - 2000 daily temperature data of 99stations in northeast china and ncep reanalysis data, the spring temperature in northeast china is analyzed, and the results indicate : 1 the spring temperature in northeast china presents upward tendency and the cycle periods of 14 years and 4 to 6 years. meanwhile abrupt change is significant between the year of 1984 and 1985

    利用東北地區99個測站的1960 ? 2000年春季逐日平均氣溫資料，以及ncep再分析資料，採用旋轉經驗正交函數、 morlet小波分析、合成分析方法研究了東北地區和各不同區域春季氣溫的時空分佈、年際和年代際變化特徵、春季氣溫異常以及低溫過程的環流特徵，並得出主要結論如下： 1 、東北地區春季氣溫存在著上升趨勢，並且有14年和4 6年的周期存在，東北地區春季氣溫存在突變現象，出現突變的時間在1984 1985年間。
  18. The result of blastx shows that one orf is extracellular serine protease precursor gene ; 3 orfs function as regulatory genes ; 5 orfs are involved in secretion pathway ; 2 orfs are related to production of lps ; and the annotation functions of the other 3 orfs are not clearly related to extracellular protease prouduction. marker exchange method was used to study the relationship between the production of protease and the 3 orfs. a deletion mutant of xcc _ 4463 was constructed successfully

    Orf注釋表明，共中一個基因為胞外蛋白酶結構基因， 3個基因與合成調控有關， 5個與轉運分泌有關， 2個與lps合成有關，其餘3個orf的注釋功能與胞外蛋白酶的關系未見報道，為研究這3個orf與胞外蛋白酶產生的關系，採用同源雙交換orf缺失法進行了進一步驗證，成功地構建了xcc _ 4463缺失突變體，所得缺失突變體經檢測胞外蛋白酶減少，在寄主上致病性降低。
  19. Main works : fractal and mechanism of forming fractal of fault surface in rock masses is analyzed and examined with it ' s affect on failure process of mining rock masses ; fractal curves are constructed with matlab to simulate the fault surface. similar material modeling is carried out and the fractal weak - face effect of mining rock masses is studied. mechanics character of rock masses with fractal fault in mining condition is simulated with large finite element software an sys ; catastrophe model of fault activated by mining is constructed with catastrophe theory

    主要工作有：檢測和分析了巖體斷層面的分形性和斷層面分形的形成機制及其對采動巖體破壞的影響機理；運用matlab構造了分形曲線來模擬分形斷層面，進行了相似材料模擬實驗，研究了采動巖體的分形弱面效應；採用大型有限元軟體ansys模擬了含有分形斷層面的巖體在采動條件下的力學性態；運用突變理論建立了采動斷層活化的突變模型。
  20. In third chapter author uses this ability to detect the edge of image. author hopes to detect pcb defection based on this method. the experiments testify validity of this method

    實驗證明，利用小波變換具有檢測信號突變點及多尺度分析的能力來進行缺陷圖像邊緣檢測是有效的。
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