genetic vector 中文意思是什麼
genetic vector
解釋
遺傳載體-
Methods : an artificial gene for fl extracellular domain cdna was synthesized by using favored genetic codons of pichia pastroris. by inserting human fl extracellular domain cdna coding 156 amino acid resi dues into pichia pastoris expression vector ppic9k containing aox1 promoter and the sequences of alpha secreting signal peptides, a recombinant expression plasmid ppic9k - fl was constructed, and integrated into the alcohol oxidase region of the host genome
為了提高外源基因的表達量，我們根據畢赤氏酵母偏愛密碼子人工合成了編碼fl胞外區156個氨基酸的cdna序列，目的序列被定向克隆到酵母分泌型表達載體ppic9k質粒上，構建ppic9k - fl表達質粒。 -
In the experiment, the full code sequence of bar gene was cloned by pcr from transgenic herbicide resistant bobwhite wheat and checked. it was expressed in e. coli and its protein was determined. after having been properly modified, the bar gene which correctly codes pat was cloned into binary vector pbi121 and then transferred into lba4404 by triparantal crossing, which is the prerequisite work for genetic transformation
本實驗從抗除草劑轉基因bobwhite小麥中，利用pcr克隆的方法擴增出bar基因全長，並在原核表達系統中表達，鑒定表達蛋白的活性，將能夠正確編碼ppt乙酰轉移酶的bar基因片段，經過適當的修飾構建入真核表達載體。 -
In transduction genetic material is transferred from one bacterial cell to another by a phage vector.
在轉導中遺傳物質從一個細菌細胞傳給另一個細菌細胞是從噬菌體為媒介的。t -
The medical community needs to stay vigilant against the threat imposed by emerging and resurging vector - borne diseases. this is particularly true in the face of demographic and societal changes, genetic alterations in pathogenic organisms, insecticide and drug resistance, and so on
面對人口變化和社會的轉變病菌基因的改變及昆蟲對殺蟲劑或藥物產生抗藥性等，醫學界需要提高警覺性，以免受新出現或重現的傳病媒介疾病的威脅。 -
Agobacterium tumefaciens strain a311 carrying the plant tranfer vector pb1121, which contains the neomycin phosphotransferasell gene ( nptll ) and p - glucuronidase reporter gene ( gus ) both under the control of the camv 35s promoter, was used in the establishment of the genetic tranformation of white clover
選用苗齡4 5天的帶柄子葉作為外植體，先將外植體預培2天，再與根癌農桿菌a311共培養3 4天後，轉入附加有40mg l ~ （ - 1 ）卡那黴素和400mg -
We successfully construct the eukaryotic expression vector of gfp - eif - 5a and its mutational vector using genetic engineering techniques. we found that eef - 5 a localized in nucleus as well as in cytoplasm just for a short time after its transient expression, then distributed only in cytoplasm
Eif - 5a的hypusine修飾是其活性和功能發揮所必需的，我們通過pcr方法實現了hypusine位點的定點突變，並進一步構建了含gfp標簽的eif - 5a及其hypusine位點突變的真核表達載體。 -
Vp3 gene of hl isolate of goose parvovirus derived from recombinant piasmid pproex htb - vp3 was subcloned into ecorl site of psy538, and the reporter gene lacz with promoter pll was cloned into smai site of recombinant piasmid. both vp3 gene and lacz gene were cloned into noti site of psy681, recombinan fpv transfer vector containing vp3 gene of gpv was obtained. the result is basis of construction of recombinant fpv expressing vp3 gene of gpv and gpv genetic engineering vaccine
本研究另從含有gpvh1分離株主要結構蛋白vp3基因的重組質粒pproexhtb - vp3中切取gpvh1株vp3基因片段，將其亞克隆于psy538的ecori位點，然後將帶有痘苗病毒啟動子p11的lacz報告基因平端克隆于上述重組子的smai位點，再用noti切下同時含有vp3基因和lacz報告基因的片段，再亞克隆于psy681的noti位點，構建出含有vp3基因的重組禽痘病毒轉移載體，為構建表達vp3基因的重組禽痘病毒從而制備gpv基因工程疫苗奠定了基礎。 -
This algorithm easily escapes from local optimal solution, have high searching efficiency, simple structure, convenient use. aiming at iteration, optimization and matlab optimization toolbox having low precision and difficulty to choose initial vector on acquiring nonlinear equations ’ solutions, equations ’ solution problem is translated into genetic algorithm optimization problem. nonlinear equations ’ usual genetic
針對迭代法、最優法、 matlab最優化工具箱求解非線性方程組中存在求解精度不高及初始矢量難選等問題，將方程組求解問題轉化為遺傳演算法函數優化問題，建立了非線性方程組通用的遺傳演算法解法，並將其用於汽車滑行試驗數據處理中。 -
In transduction genetic material is transferred from one bacterial cell to another by a phage vector
在轉導中遺傳物質從一個細菌細胞傳給另一個細菌細胞是從噬菌體為媒介的。 t -
Plant expression vector pbil21 - cspds was constructed in which the expression of cspds gene was under the control of camv35s promoter and t - nos terminator via genetic engineering
對番紅花屬番紅花的核糖體55一rr膚基因序列進行基因克隆、測序，獲得了的55一rrna基因的序列特徵。 -
The main factors of probabilistic neural network including the hidden neuron size, hidden central vector and the smoothing parameter, to influence the pnn classification, are analyzed ; the xor problem is implemented by using pnn. a new supervised learning algorithm for the pnn is developed : the learning vector quantization is employed to group training samples and the genetic algorithms ( ga ’ s ) is used for training the network ’ s smoothing parameters and hidden central vector for determining hidden neurons. simulations results show that, the advantage of our method in the classification accuracy is over other unsupervised learning algorithms for pnn
本文主要分析了pnn隱層神經元個數，隱中心矢量，平滑參數等要素對網路分類效果的影響，並用pnn實現了異或邏輯問題;提出了一種新的pnn有監督學習演算法:用學習矢量量化對各類訓練樣本進行聚類，對平滑參數和距離各類模式中心最近的聚類點構造區域，並採用遺傳演算法在構造的區域內訓練網路，實驗表明:該演算法在分類效果上優于其它pnn學習演算法 -
Detection of motion vector of cardiac myocyte using adaptive genetic algorithm
自適應遺傳演算法用於心肌細胞運動矢量檢測 -
Thanks to the support of the national natural science foundation of china under grand no. 50277036 for " the pulse electromagnetic fields and system - level em radiation of electric vehicles ", this thesis concentrated on the design of the variable voltage and variable frequency ( vvvf ) system and the development of a genetic algorithm for vector optimal design problems. the work includes mainly four parts : a brief introduction of the frequency - converter, the emc design of the vvvf system and the national standard of the electromagnetic interference of the vvvf system, the study of global search optimization algorithms, and an improved genetic algorithm called emigration genetic algorithm for multi - objective optimal problems
在國家自然科學基金資助項目《電動汽車脈沖電磁場與系統級輻射的研究》的工作基礎上，本文對電動車電磁輻射關鍵部分? ?變頻調速系統的電磁兼容性設計以及在電磁兼容性設計中涉及到的電磁系統的多目標優化方法進行了系統的分析和研究，其核心內容包括：變頻器工作原理；變頻調速系統電磁兼容性設計及變頻調速系統電磁兼容標準；隨機類全局優化演算法研究；提出了一種改進的遺傳演算法命名為遷徙遺傳演算法。 -
Abstract : the low expression level of foreign genes in transgenic plants is a puzzling question for researchers in plant genetic engineering. the biosafety concern is now causing a growing public wariness of transgenic plants around the world. this article reviews the new strategies currently used in construction of plant expression vector for plant genetic engineering. these strategies are important for obtaining better expression of foreign genes and developing safer transgenic plants
摘要外源基因在轉基因植物中表達效率低一直是令相關研究者困擾的一個問題.轉基因植物的生物安全性最近在全球范圍內開始引起世人的擔憂.本文簡要介紹了近年來在植物表達載體構建方面所採用的一些新策略，這些策略有助於增強外源基因的表達水平、提高生物工程體的安全性。 -
This paper also optimizes the support vector machine ( svm ) parameters and controller scale coefficients based on genetic algorithms ( ga ), in order to get the optimal performance of the controller
利用遺傳演算法來優化支持向量機參數和控制器比例因子參數，以期實現最優的控制性能。 -
Plant expression vector lba4404 ( pbin + - 35s - cbf3 + pal4404 ) was used in the genetic transformation of cucumber and micro - tomato. establishment of high efficiency regeneration system and determination of parameters involved in agrobacterium - mediated transformation, screening and characterization of transformant were systemically researched
將植物表達載體pbin ~ + - 35s - cbf3對黃瓜和小番茄進行遺傳轉化，建立了黃瓜高頻再生和遺傳轉化體系，獲得了一株轉基因黃瓜植株，並通過了植物基因組pcr檢測；獲得了兩個具有kan抗性的小番茄再生綠芽。 -
In this study, vp7 gene and ctb - vp7 fusion gene expression vectors were constructed, and a high - efficient genetic transfomation system of carrot ( daucus carota l. ) was established. vp7 gene was amplified from cdna of rotavirus antigene by pcr and was inserted into expression vector pbi121 containing no gus gene
本實驗以輪狀病毒的vp7為目的基因，構建了vp7基因的表達載體和vp7 - ctb融合表達載體；以胡蘿卜為受體材料，建立並優化了胡蘿卜的轉化體系，獲得了能正常轉錄vp7基因的轉基因胡蘿卜植株。 -
There are two methods to optimize the parameters and structures of neuro - fuzzy networks : one is the differential coefficient optimization method based on gradient vector ; the other is based on modern optimization methods, such as genetic methods, simulated annealing etc, in which, the researches on genetic methods are most prominent
目前，對模糊神經網路的權值或結構進行優化的方法有兩類：一類是基於梯度向量的導數優化方法；第二類方法是基於現代最優化技術的非導數優化方法，如遺傳演算法、模擬退火演算法等，其中以遺傳演算法的研究最為突出。 -
In this study, we have constructed a new cea dna vaccine and a plasmid of il - 2 by using genetic - engineering technology, and designed the immunostimulatory dna sequence ( iss ). we hope enhance the quantity of cea and the anti ~ cea by using the various vector, cytokine and iss
本文運用基因工程技術構建了cea的dna疫苗pc工cn ，白細胞介素七的真核表達質粒pci可l 《 ，設計合成了硫代修飾的免疫刺激序列門ss ） ，希望從載體、細胞因子和es方面提高cea的表達和抗ea的產生，從而達到對優a陽性腫瘤免疫防治的目的。 -
This method combines a genetic algorithm with an artificial neural network classifier, such as back - propagation ( bp ) neural classifier, radial basis function ( rbf ) classifier or learning vector quantization ( lvq ) classifier
此方法結合基因演演算法與類神經分類器，如倒傳遞分類器、放射基底函數分類器以及學習矢量量化分類器。
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