查询词典 natural selection

Results showed that optimal selection achieved greater selection response than either standard QTL or regular BLUP selections. The influence of economic weight to optimal selection was significant, and the optimization was better as the economic weight of D100 increased.

经济权重对优化选择的影响较明显，随着达100 kg日龄赋予的经济权重的增加，优化选择的优势越明显。

Selection of the silkworm varieties that ingest artificial diets and analysis of feeding habit heredityIn order to obtain a pure line omnivorous system of silkworm variety which is suitable for artificial diet, two varieties, Selected 01 and Selected 02, were chosen for further selection in continuous generations. The average feeding ratio on mulberry free artificial diet of newly hatched larve reached 99.0% after the selection.

人工饲料摄食性优良品种选拔及遗传分析为获得纯合的对不含桑叶粉人工饲料食性优良的广食性系统，对筛选出的摄食率较高的两个品种选01和选02进行累代选择，蚁蚕对不含桑叶粉人工饲料的平均摄食率分别达到99.0%以上。

Unctional study of the negative selection sites, possible Darwinian positiveselection sites and deletion mutants The aim of this study was to observe the role of negative selection sites,possible Darwinian positive selection sites and deletion fragments in FKN/CX3CR1 binding affinity, chemotaxis and adhesion.

KN／CX3CR1负选择位点、可能存在的达尔文正选择位点及缺失片段的体外功能研究观察负选择位点，可能存在的达尔文正选择位点及缺失片段对FKN／CX3CR1介导的功能的影响，应用定点突变技术构建不同的突变子，体外实验观察突变子对FKN／CX3CR1在亲合力、趋化功能和粘附功能上的影响。

Of the 32 articles, 4 were about the selection of destination genes, 3 about the selection of target cells, 7 about the selection of gene expression vector, 3 about the methods of gene transfer, 4 about gene therapy combined with tissue engineering in treating bone defect, 5 about polygenes in treating bone defects, and 2 about the problems and prospects in the gene therapy of bone defect.

符合纳入标准的32篇文献中，4篇涉及目的基因的选择，3篇涉及靶细胞的选择，7篇涉及基因表达载体的选择，3篇涉及基因转移方法，4篇涉及基因治疗与组织工程结合治疗骨缺损，5篇涉及多基因联合治疗骨缺损，2篇涉及骨缺损基因治疗存在的问题与展望。

In order to improve the resistance to bacterial blight of high quality rice male sterile line Jinshan A , in this study, the Jinshan B and IRBB21 that carried gene Xa21 were used as parents to make backcrosses, and both foreground selection and background selection were carried out by means of marker assisted selection in the backcrosses.

本研究以IRBB21为Xa21基因的供体亲本，以金山B为轮回亲本进行回交，并应用分子标记辅助选择技术对回交各世代同时进行前景选择和背景选择，得到如下结果：(1)利用Xa21基因内的STS标记MXA21对各回交世代进行前景选择，得到了44个带有Xa21基因的BC_1单株和40个带有Xa21基因的BC_2单株。

Toggles between moving the selection and copying the selection (only when the Selection tool is active).

之间切换移动的选择和复制的选择（只有当选择工具，是积极的）。

PixTwix is an image processing ActiveX control featuring: advanced selection routines including irregular and non-contiguous selection regions, local and global magic wand selection, unlimited file based undo capabilities, both loss-less and lossy rotation routines, color channel manipulation functions such as mixing, adding, and multiplying, red eye effect removal by color clamping, unlimited number of user defined 3x3 convolution filters, image encryption and decryption, file checksum calculator, color count and histogram functions, blurring, sharpening, softening, edge enhancement, drop shadow, border and frame effects, range of low pass and high pass filters, logical operations on pixels, clipboard support, masking, skewing, range of color replacement functions, reversing, flipping and reflecting, blending, colorizing, tinting, grayscale conversion with user defined channel weights, texture filling, adjustment of brightness, contrast, saturation, dithered black and white images with user defined bias, embossing in different directions, antialiasing, zooming, tile, spray, mosaic and many other special effects and filters.

pixtwix是一个图像处理ActiveX控制项主题：高级遴选例程，包括非正规和非连续选择地区，当地和全球的魔术棒选择，无限的文件为基础的复原能力，无论是亏损少耗和旋转例程，颜色频道操控功能，如混合，加入，再乘以，红眼效应去除颜色夹紧，无限数量的用户定义的3x3卷积过滤器，图像加密和解密，文件的校验和计算器，彩色计数和直方图功能，模糊，锐化，软化，边缘增强，下拉阴影，边界和框架的影响，一系列的低通和高通滤波器，逻辑运算对像素，剪贴板支持，掩蔽，拉动了，各种颜色的更换功能，扭转，翻转和反映，共混， colorizing ，调色，灰阶转换与用户定义的频道权重，纹理填充，调整亮度，对比度，饱和度，抖动黑白影像与用户定义的偏见，压花，在不同的方向，抗锯齿，缩放，瓷砖，喷雾，马赛克和其他许多特殊效果和过滤器。

This paper presents the portfolio selection problem of two-attribute money and creates a model of portfolio selection based on two-attribute money, which can both contain the existing portfolio models and overcome the above-mentioned deficiencies. A series of new concepts is put forward, such as, holding wealth, obtainable wealth, short-term utility function, short-term expectation-variance utility function, state-expectation-variance utility function, short-term expectation-variance utility curve, long-term expectation-variance utility curve, margin utility contribution force, additional contribution force, profit-risk exchange rate and optimal portfolio expansion curve; The state-expectation-variance analytical method is developed from the expectation-variance analytical method; A set of systematic theories concerning two-attribute portfolio selection is thus established.

本文提出了两属性货币的证券组合选择问题；创建了既能包含现有证券组合选择模型又能克服上述两点不足的两属性证券组合选择模型；提出了持有财富、可获财富，短期效用函数，短期期望—方差效用函数、状态—期望—方差效用函数，短期期望—方差效用曲线、长期期望—方差效用曲线，边际效用贡献力，附加贡献力，收益—风险替换率，最优证券组合扩展线等一系列新概念；把期望—方差分析方法发展成状态—期望—方差分析方法；建立了两属性证券组合选择模型的一套系统的理论。

Including: to enclose to protect the calculation and selection of scheme of hot load of the structure heating ,selection ,waterpower calculation and heating room coil design and selection of appendix of basement heating scheme and economically analyses and CAD drawing .

设计主要包括：设计方案的经济性分析和择优确定；设计概预算；采暖、供热外网热负荷的计算、给排水负荷的计算；采暖、给排水、热网的水力计算；热力站的设计；以及管线、设备的布置，附件的选择，CAD制图等内容。

While among genetic indexes of samaras, obvious differences existed in repetition, heredity variance, selection difference, selection response, selection intensity and heredity gain.

对高产胶优良无性系各遗传参数进行分析表明，杜仲果实各形态性状和生长结果性状均具有较高的重复力。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。