隨機突變 的英文怎麼說

中文拼音 [suíjītūbiàn]
隨機突變 英文
random mutation
  • 隨 : Ⅰ動詞1 （跟; 跟隨） follow 2 （順從） comply with; adapt to 3 （任憑; 由著） let （sb do as he li...
  • 機 : machineengine
  • 突 : Ⅰ動詞1 （猛沖） dash forward; shoot out 2 （高於周圍） protrude; bulgeⅡ副詞（突然） abruptly; sud...
  • 隨機 : random stochasticrandom
  • 突變 : 1 （突然急劇的變化） sudden change; change suddenly; transilience; accident; saltation; revulsion...
  1. There was no character however unexpected, no change of scene, no stage effect, but was obliged to clamber up this ladder

    隨意編派的角色，機關布景，劇情突變，沒有一樣不是安排從這梯子上場的。
  2. The paper analyses the law of services spatial diffusion in chongqing city, which is the law of business services spatial diffusion base on contagious diffusion hierarchical diffusion and base on the law of stochastic diffusion along the axes, and, according these principle, revise the unit factors score of business services calculated by using traditional way

    由於重慶市地形復雜，江河阻隔，因此山城城市職能除表現為傳染擴散規律外，更突出地表現為等級擴散和軸向隨機擴散規律。文章依據這些原理對採用傳統的方法得到的商服功能影響作用分進行修正，同時探討了結點數動態變化時城市職能的空間擴散規律。
  3. 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 。
  4. Thus while random mutations might well lead us to have funny - looking jaws and teeth, there is no obvious reason why they would make our jaws and teeth smaller

    因此雖然隨機突變很可能導致我們有樣子可笑的下巴和牙齒，卻沒有明顯的理由說明這種突變為什麼會使我們的下巴和牙齒變小些。
  5. Neutral mutation - - evolution at the molecular level is primarily determined by mutational input and random genetic drift, rather than by natural selection

    天然突變- -演化過程中在分子的層次上主要是經由隨機的基因流而決定，並非藉由天擇所影響。
  6. In the genetic process of reproduction, crossover and mutation of the chromosomes in this method, these operators pr, pc and pm are produced randomly within some space, the scale of population and all kinds of genetic probability are also adjusted randomly so that the diversity individuals of population is ensured. the ga of dynamic population scale passes more information of paternal chromosomes to the offspring, which is beneficial to search the global optimization or quasi - global optimization

    該方法在染色體進行繁殖、交叉、突變的遺傳過程中，在某一范圍內隨機選取p _ r ， p _ c ， p _ m ，動態調整種群規模，保證了種群個體的多樣性；選擇同父本分別進行三種遺傳過程使得父本染色體中有更多的信息傳遞給子代，這有利於搜索全域最優解或準最優解。
  7. Red tide occurs randomly, with short duration and large incidence. airborne hyperspectral remote sensing technique can play an important role in red tide ' s monitoring. and the precondition is to acquire in situ spectral data of red tide, to grasp red tide ' s spectral characteristics by data processing and analysis and to set up spectral library of different dominant species of red tide

    赤潮是海水中的浮游生物在一定條件下過度繁殖或聚集致使海水變色的一種生態異常現象，因其具有隨機性、突發性、持續時間短、影響范圍大等特點，客觀上要求利用航空高光譜遙感技術對其進行監測；但首要的前提與基礎性工作是大量獲取赤潮水體的現場光譜數據，通過處理與分析，掌握其光譜特性，不斷充實赤潮優勢種類的光譜數據庫。
  8. Fourthly, we detected the mitogen activity of sed mutants and found that the mitogen activity of mutant sedn23a, sedn23a / h26r and sedp45a decreased significantly

    由於隨機突變的發生，我們還構建了sedn23aih26r雙突變體。並對突變體蛋白進行分析和純化，獲得了可用於后續功能實驗的sed突變體。
  9. The necessary and sufficient conditions of uniqueness, recurrent, ergodicity, exponential ergodicity, strong ergodicity, stochastically monotone, feller and symmetric properties - in - for the processes are presented. chapter 3 is devoted to studying an extended birth - death q - matrix with catastrophes and instantaneous state. we are able to give easy - checking existence criteria for such processes

    第二章討論具有突變率的廣義生滅全穩定q -矩陣，圓滿地獲得了q -矩陣零流出、零流入以及q過程的唯一性、常返性、遍歷性、指數遍歷性、強遍歷性、隨機單調性、 feller性、配稱性等充分必要條件。
  10. Because of the randomness, the periodicity and the impact property of load changes, the short - range electric load forecasting accuracy is related to the pre - processing of original data, the load forecasting model, the sudden change of climate etc. without an appropriate mathematical model, it is difficult to meet the demand of farecasting accuracy by using computer software

    短期電力負荷預報的準確度與原始數據的預處理、負荷特性、預報模型、氣候突變等因素有關，因為負荷變動具有隨機性、周期性和沖擊性的特性，如果不採用恰當的數學模型，利用計算機軟體技術就難以滿足預報準確度要求。
  11. When other strange things start happening in connection with the phone, ji - won does some investigating and discovers that of the people before her who had the same number, almost all of them died suddenly under unusual circumstances

    恐怖事隨即發生，手機離奇收到如果愛我，請聽電話的簡訊，並突然響起，好友荷珠女兒美研意外接聽，性情登時突變，更企圖殺死母親，有如鬼上身。
  12. Chance plays a part in evolution ( for example, in the random mutations that can give rise to new traits ), but evolution does not depend on chance to create organisms, proteins or other entities

    機運在演化中扮演了一個角色（例如，導致新的生物形質的突變就是隨機發生的） ，但是演化創造生物、蛋白質或其他物事，並不依賴機運。
  13. And the value drop to the lowest at ph = 0. 8. as the increase of heat treatment temperature, the pore size distribution peak of sio2 microspheres is very narrow, meanwhile the specific surface area is the smallest before 160 c. the polymer template is removed at 350 c, so the pore structure of sio2 particles has a big change which involve the increase of specific surface area and the broaden of pore size distribution peak. with the continuous raise of temperature the sio2 network will shrink little, as a result the average pore size will decrease, but the specific surface area has no obvious change

    結果發現：二氧化硅膠體顆粒均勻分佈於脲醛聚合物網路中，煅燒去除有機模板后微球表面變粗糙，而粒徑沒有明顯變化； ph值較小時，復合微球中聚合物含量較大，而ph值較大時，得到復合微球結構鬆散，因此熱處理后的二氧化硅微球孔容及平均孔徑都較大，而在ph = 0 . 8時，得到最小值；武漢理工大學碩士學位論文隨著熱處理溫度的變化，小於160時，空分佈較窄，而比表面積較小，在350時，由於有機模板的去除，微球孔結構發生突變，比表面積明顯增大，而孔徑分佈變寬，溫度繼續升高時，二氧化硅網路發生收縮，平均孔徑變小而比表面積由於有機炭化物的完全去除沒有太大變化;微球中的微孔在熱處理過程中處于平衡狀態，分佈沒有太大變化。
  14. They proposed that a higher ratio of non - synonymous to synonymous mutations, compared with that expected by chance, would be the result of positive selection, and would therefore point to the presence of driver mutations

    與隨機期望對比，他們推薦非同義與同義之比更高的比率，會是陽性選擇的結果，因此成為驅動突變存在的界點。
  15. It clearly allows us to engineer enzymes with novel functions and features by strategies, such as error - prone pcr, dna shuffling and stagger extension process ( step ), when very little is known about spatial configuration of proteins. therefore millions of years in nature can in principle be accomplished in the test within several years. according to the basic idea of directed evolution, we modified the a - aldc gene by error - prone pcr

    它不需要事先了解酶的空間結構和催化機制，而通過在體外模擬自然進化機制（隨機突變，重組和自然選擇） ，利用易錯pcr ， dna改組，交錯延伸等方法，改造酶基因，定向選擇（或篩選）有價值的非天然酶，短期內在試管中完成在自然界需要幾百萬年的進化過程。
  16. The mutant pel - d92l was expressed in pichia pastoris gs115, sds - page detection showed that the expression product pel - d92l - gs is different from pel - gs, and its " yield decreased dramatically, the themostability of pel - d92l - gs is also different from the pel - gs, but their optimum temperatures are same. 3. directed evolution of pel through random mutagenesis mutagenesis pcr carried out in error - prone conditions was used on the vector psk - pel, using the oligos " beginning " and " end ", homologous to the 5 ' and to the 3 " ends of the gene of pel respectively

    三、 pel基因的隨機誘變用易錯pcr方法對pel基因進行隨機誘變， pcr產物與ppic3 . 5k連接，轉化大腸桿菌，獲得的混合質粒電轉化畢赤酵母gs115 ， omm平板篩選適于低溫或對熱穩定的重組子，篩選獲得一株最活反應溫度、熱穩定性、發酵酶活均有提高的突變體pel - ep5 - gs ，其最活反應溫度為45 ，比野生型高出5 ； 40處理30min殘留活性為56 ，大大高於野生型的6 ；初始ph7 . 3528條件下培養72h ，發酵上清酶活為325u / ml 。
  17. Still more frightening, they would by either design or random mutation develop the ability to communicate with one another

    更可怕的是，它們可能經由計畫或隨機突變而發展出相互溝通的能力。
  18. Eventually another random mutation to a cancer gene knocks down another obstacle, initiating another burst of growth

    直到有另一個癌癥基因產生隨機突變，去除了另一個阻礙，而引發另一波的生長。
  19. It evolves in two ways : gradually through random mutation, and more rapidly as different strains of influenza swap genes inside a single animal or person [ see box on opposite page ]

    病毒可經由兩條演化途徑得到在人類間散播的能力：隨機突變而逐漸適應，更快的是在同一隻動物或人體內與其他流感病毒交換基因（參見右頁全球流感病毒株的衍生途徑） 。
  20. It is used to probe the relationship between the structure and activity of proteins ; to define the roles of particular proteins and protein assembles in the cell ; to determine the logic and order of molecular events during differentiation and morphogenesis ; to improve the activity of enzyme, antibiotics and so on

    引導蛋白質功能進化常用的方法是模擬和加速蛋白質基因自然重組的進程，即在蛋白質的基因中引進隨機突變。因此，蛋白質基因體外隨機突變的方法影響著引導蛋白質功能進化的效果。
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