For genetic manipulation, the Ti plasmid is modified by the removal of the genes within the T-DNA region using restriction enzymes that cut DNA at specific nucleotide sequences. 为了利于基因操作,用限制酶在特定的核苷酸序列处除去T-DNA区内部的基因以进行质粒修饰。
Theoretically, genetic engineering method can create male sterile material of any plant with strong purposiveness without the restriction of conventional approach. 从理论上讲,利用基因工程的方法可以创造出任何植物的雄性不育材料,目的性强,克服了常规获取方法的局限性。
This paper, based on traditional genetic algorithm, added time restriction algorithm to guarantee the algorithm is achieved in real time. 针对这种问题,在传统遗传计算基础上,加入了时间约束算法,对算法的实时实现作出保证;
It makes genetic algorithms to use in restriction optimization more conveniently and promotes applicability of genetic algorithms in the use of engineering optimization. 利用本文提出的改进遗传算法对压缩机面积利用系数的优化研究取得了与理论分析相一致的结果;
The fuzzy property is the character of contour matching and the genetic algorithm is a global optimizing adaptive search algorithm. With this algorithm, it is accurate to express the restriction of contour matching and to reduce the error matching effectively. 模糊性为轮廓匹配问题本身所具有,借鉴遗传算法这一种全局优化自适应概率搜索算法,可以准确表达轮廓匹配中的约束,有效地减少错误匹配的发生。
This paper adopts Genetic Algorithm to solves optimize design of buckling for different restriction, different loading, different thickness and different aspect ratio. 本文采用遗传算法,针对不同约束、不同载荷、不同厚度和不同边长比的层合板,进行稳定性优化设计。
The genetic algorithm based on decimal coding was given to solve the VRPFL with a driving distance restriction and verified through an example. 设计了基于自然数编码求解该问题的遗传算法,并用实例进行了验证。
In the study, on the basis of studying the system of genetic transformation of Tremella fuciformis, a lysine-rich protein gene expression vector was constructed, and then transferred into Tremella fuciformis spores with Restriction Enzyme-Mediated DNA Integration ( REMI). 本研究在探索银耳遗传转化体系的基础上,构建了高赖氨酸蛋白基因表达载体,利用限制性内切酶介导整合法(REMI),首次把高赖氨酸蛋白基因导入银耳芽孢,获得了转基因菌株。
The design of a malaria vaccine must overcome genetic restriction to be effective to a diverse population. 在设计疟疾疫苗的过程中,必须克服不同个体的遗传基因限制性问题。
Traditional genetic algorithm has a poor expressive power for complicated problem because of the restriction of its certain encoding mode, which limits the application fields of genetic algorithm. 传统遗传算法由于受确定编码形式的制约而缺乏对复杂问题的表述能力。
Furthermore, genetic restriction of the immune response to malaria has also an effect on vaccine protection. 另外,宿主的遗传性限制也影响着疫苗的保护效果。
Genetic Analysis and Restriction Measures of Road Traffic Noise 公路噪声的成因及治理措施
The genetic arithmetic was applied in non-full loaded vehicle scheduling problem with single park and single vehicle type, which has time windows restriction. 利用遗传算法解决单车场单车型有时间窗约束的非满载车辆调度问题。
In this paper, a new genetic algorithm is designed to solve the vehicle routing problem ( VRP) with capacity restriction in commodity delivery. 就商品配送中,带有能力约束的车辆路径问题(VRP),设计了一种新的遗传算法。
The improved genetic algorithm is used to solve the optimize problem with restriction to get an satisfying result of dimension-decrease. 应用改进的遗传算法计算有约束条件的优化问题,得出了较满意的降维结果。
Because the genetic algorithm is not restricted by the restriction hypothesis of search space and does not require the searching space to be continuous and derivative, thus it is applied to various domains widely. 由于遗传算法不受搜索空间的限制性假设的约束,不要求解空间有连续、可导等性质,以及算法固有的计算并行性,因而广泛应用于各个领域。
The improved genetic algorithm based on real number encoding was introduced for the first time. The selection, crossover and mutation algorithm of genetic algorithms and other parameters coded were designed. Direct comparison-proportional method was applied to handle restriction optimization problems. 进而首次将改进遗传算法引入到钢管混凝土结构中,采用实数编码,设计了遗传算法的选择、交叉和变异算子以及其它执行参数,用直接比较&比例方法处理有约束的最优化问题。
Technical improvements in somatic cell hybridization, such as genetic transformation, provide a promising approach for breeding new tolerant cultivars of this species, good protoplast culture system is fundamental and restriction point. 植物体细胞杂交技术的产生和发展为草地早熟禾新品种选育提供了一条新途径,良好的原生质体培养体系是利用体细胞杂交技术进行品种改良的根本和制约点。
Tobacco variety is the genetic basis of yield and quality, an admirable variety is the premise condition of tobacco leaf production. It requires not only a suitable environment, and the varieties and cultivation measures have certain restriction conditions. 品种是烟叶产质量的遗传基础,优良的品种是烟叶生产的前提条件,它不仅要求有适宜的生态环境,同时对栽培措施等均具有一定的限制条件。
According to the characteristics of the model, an improved genetic algorithm ( GA) was proposed. And a special real-valued coding scheme, punishment function method and demand split strategy were adopted to deal with restriction in the model. 根据该模型的特点,提出了一种改进的遗传算法,采用特定实值编码、罚函数法和物资需求量分割策略处理模型中的约束条件。