查询词典 selection handle

On the Presuppositions of Group Selectionism DONG Guo-an ( Research Institute of Philosophy, South China Normal University, Guangzhou 510631, China)One principal problem of the debate about level of selection has been the importance of group selection.

关于选择层次的一个主要问题是：群体选择概念在解释诸如利他行为这类性状的进化中是否必要？

The efficiency of selection was monitored by comparing the number of phage recovered from the acid elution and cell lysate in each round,and by testing EGFR binding specificity of polyclonal phagescFv on CHOEGFRGFP1 and CHOK1 cell with cell ELISA. Bacterial PCR was used to select clones containing a 1 kb insert. Cell ELISA was used to determine EGFR binding specificity of monoclonal pscFv on EGFR positive and negative cell. The number of individual EGFRbinding clones was determined with nucleotide sequencing. Results 500fold enrichments were observed by tittering phages in the cell lysate after five rounds of selection.

以稳定转染的CHOEGFRGFP1细胞和未转染的CHOK1细胞分别作为EGFR阳性和阴性细胞，采用负筛选的方法进行筛选；通过比较每轮投入及洗脱出噬菌体的效价比以及细胞ELISA检测多克隆pscFv与阳性、阴性细胞结合情况对筛选过程进行监测；采用菌落PCR挑选含有全长scFv片断的菌落，进一步用细胞ELISA检测单克隆pscFv与EGFR阳性及阴性细胞结合特异性；挑选EGFR特异性单克隆pscFv采用DNA测序法确定克隆多样性。

Results 500fold enrichments were observed by tittering phages in the cell lysate after five rounds of selection. A signal significantly greater than background binding was observed from the third to the fifth round of selection on CHOEGFRGFP1 and CHOK1 cell, but a part of polyclonal scFv bound EGFR specially. About 45% of the selected clones contained a fullsized insert of 1 kb. One unique human antiEGFR scFv (F4scFv) was isolated by analyzing with cell ELISA and DNA sequencing.

结果 经过5轮筛选，细胞裂解液中洗脱出噬菌体效价有500倍以上增长；细胞ELISA结果显示多克隆pscFv与CHOEGFRGFP1细胞和CHOK1细胞均有明显结合，但有部分特异性结合EGFR；菌落PCR显示约45％克隆中含有完整的1kb scFv片断；经细胞ELISA、 DNA测序检测共获得1株EGFR特异性单链抗体，命名为F4scFv。

Evaluation of Characters and Selection of Thirty Samples of Toona Sinensis;2. The Grey_connection_decision method is applied to the selection of the Populus Tomentosa carr.

选择 9种有代表性的三倍体毛白杨无性系和 1个普通毛白杨，对其化学组份和纤维特性进行分析测定，试验结果用灰关联决策的理论和方法进行综合分析评价，对三倍体毛白杨无性系纸浆材进行选优。

In order to implement universality,interoperability and transplantability in bioelectrical impedance measurement system,using the idea of abstract,this paper divides the system into four parts: signal source module,excitation selection module,measurement selection module and demodulation module.

为了实现生物电阻抗测量系统功能抽象设计的通用性、互用性和可移植性，运用抽象化的思想，将生物阻抗测量系统抽象为信号源模块、激励选通模块、测量选通模块和解调模块。

In this paper, we have proposed a flexible encryption blocks selection buyer-seller watermarking protocol integrated the RSA asymmetric encryption system and homomorphism mechanism to protect the ownership of digital contents and fit real life. And consider the secondhand transaction in the real life. We also propose a buyer-reseller watermarking protocol based on the flexible encrypt blocks selection buyer-seller watermarking protocol to offer a solution of secondhand transaction. In our scheme, it's more light data transport requirement than other schemes. All roles in protocol will benefit by their participation. Our scheme can overcome various of the known attacks and security problems in the buyer-seller watermark protocol, such as buyer's right problem, unbinding problem, piracy tracing problem, conspiracy problem, buyer's participation in the dispute resolution problem, man-in-the-middle attack problem and anonymous problem. Furthermore, the seller and arbiter can verify the buyer's watermark without decrypting it in our scheme.

本文除应用RSA非对称式加密与秘密同态机制，提出了一个符合现实生活中买卖交易行为、可弹性调整加密范围数位内容买卖浮水印协定，强化了目前研究中对於数位内容买-卖浮水印协定的安全性，并进一步的考量二手商品交易行为，在可弹性调整加密范围数位内容买卖浮水印协定基础上，提出一个结合数位内容二手买卖与盗版追踪的二手数位内容买卖浮水印协定，达到让参予买卖的角色可以在安全的情形下完成二手数位内容所有权的移转并从中获取相对应利益的目标的数位内容转卖浮水印协定来增强了目前数位内容买卖浮水印协定研究中对於二手交易欠缺之处，解决了数位内容买卖浮水印协定中所可能遭遇的重要安全性议题，如：买方权益、盗版追踪、资讯不连结、共谋、买方需要参与仲裁、中间者攻击及匿名性问题。

With proper atomic coherence, the performance has the following advantages compared with that of the velocity selection of the ultracold two-level atoms by the micromaser: high resonant transmitted efficiency, low unresonant transmitted efficiency, and large velocity selection scale. The second part includes the fifth chapter.

原子透射几率只受到一种量子干涉效应的影响，其来源为V型的两个跃迁通道，因此Micromaser对入射超冷V型三能级原子束速度的选择性能深深地受到原子相干性的影响，我们发现选取适当的原子相干参数以及其它参数，速度选择性能可以达到很理想的状态：共振原子透射效率高、透射原子束的速度纯度好、速度选择范围大。

A greedy feature selection algorithm has been employed, and a wieldy sample selection algorithm basing on the frequency histogram re-sampling has been proposed, which reduces the influence of redundant features and samples, and consequently improved the robustness of the resulting*recognition system.

从模式识别本身对训练样本集的要求出发，给出了基于频度统计函数重抽样的样本选择方法，一定程度上消除了冗余样本和奇异样本给分类器的学习、训练和分类识别带来的不良影响。

Maize inbreds are xenial. For the hybridization along with continuous gene exchange among different plants creating a new hereditary variation pool and thereafter on the effect of natural selection and artificial selection, it creates a new germ plasm which is different from the original germ plasm at quite a large extent.

玉米是异花授粉的，在不同植株之间，由于杂交以及相伴随的连续的基因互换会创造出新的遗传变异库，其后在自然选择和人工选择的作用下，产生在相当程度上不同于原始亲本种质的新种质。

Under the auspices of MOP and MOA in the last ten years, an integrated technical study on forage species selection, variety combination, seed treatment, land surface treatment, proper seeding time, airplane type selection, maintenance after seeding and reasonable utilization was conducted in the county, focused on aviating seeding and protection and utilization.

飞播种草是沙化、退化草地治理的重要技术措施之一，近10年在财政部、农业部的大力支持下，全国开展了以&飞播种草＋保护利用&为核心，对牧草筛选、草种组合、种子处理、地面处理、适时播种、机型选择、播后管护、合理利用8项关键技术进行组装和研究，集成应用在北方沙化退化草地区等6个不同生态区域中。

Yet, Edith says, there was always money in the bank.

但是Edith说，她的银行户口里面总是有钱。

We have created a series of files that resolve this problem--one for each day of the 40 days of purpose.

我们制作一系列的档案去解决这问题---一个为标竿40天中的每一天。