张轶群123
找到一些看看适合你吗?要是不适合的话就不用给分了,要是适合的话就……(自己也是找了N久才找到的呢)genetically modified organism (GMO);oligonucleotide microarray;GMO screening;multiplex-PCR;event-specific;integration junction sequence随着转基因农作物检测技术的不断发展,PCR技术已经成为最主要的检测方法之一。但是常规的PCR每次只能扩增一个基因,而单独的多重PCR和常规电泳相结合的技术由于受多重PCR技术自身限制,每次扩增的基因数目也很有限,因此不能满足当前转基因农作物检测的要求。 寡核苷酸芯片是一种在基片上点有若干寡核苷酸探针的基因芯片,每个点都含有序列特异的探针以和感兴趣的基因相互补结合。因此,寡核苷酸芯片可以和多重PCR技术相结合用来同时检测多种目标基因。 在这篇论文中,我们开发了多重PCR技术和DNA芯片技术相结合的方法,在同一个反应中同时检测多个目标基因,以达到检测转基因农作物的目的。 我们设计了两大类芯片,其中一类用来检测样本是否是转基因农作物,另一类用来检测样本来自于哪一种转基因品系。 对于第一类芯片,我们使用了20种探针用以检测转基因农作物,按照具体功能可以分为三种:第一种,根据一些普通元件例如启动子、终止子、报告基因等来检测是否为转基因农作物;第二种,根据目标基因例如抗除草剂或是抗虫害基因来做特定基因的检测确认;第三种,根据物种特异性基因来检测该样本来自于哪种作物。为保证方法的有效性,设立不同的阳性对照和阴性对照来鉴定该实验方法,并且通过常规PCR反应和测序来进一步验证。结果表明这种方法可以快速识别样本是否为转基因农作物,并且花费少,效率提高。这种方法可以检测目前95%以上的转基因作物,并且对于大豆的最低检出率是0.5%,玉米是1%。 对于第二类芯片,根据唯一的、品系特异的宿主与插入片断间连接区域的基因序列,通过多重PCR和寡核苷酸芯片相结合的技术,以达到检测出样本来自于哪种转基因品系的目的。转基因农作物商品大豆(GTS 40-3-2)和六种转基因玉米(MON810,MON863,Bt176,Bt11,GA21和T25)通过这种方法进行检测。结果表明对于这些转基因大豆和玉米,该方法均可以适用。 以上两种芯片被证明是一种新的转基因农作物检测的常规方法。With the increasing development of genetically modified organism (GMO) detection techniques, the Polymerase Chain Reaction (PCR) technique has been the mainstay for GMO detection. And an oligonucleotide microarray is a glass chip to the surface of which an array of oligonucleotides was fixed as spots, each containing numerous copies of a sequence-specific probe that is complementary to a gene of interest. So it is used to detected tens or more targets synchronously. In this research, we developed a multiplex polymerase chain reaction (multiplex-PCR) coupled with a DNA microarray system simultaneously aiming at many targets in a consecutive reaction to detect a GMO. We designed two types DNA microarray, one to detect whether the sample was from GMO, the other to detect which event the sample was from. For the first type, there are a total of 20 probes for detecting a GMO in a DNA microarray which can be classified into three categories according to their purpose: the first for screening GMO from un-transgenic plants based on the common elements such as promoter, reporter and terminator genes; the second for specific gene confirmation based on the target gene sequences such as herbicide-resistance or insect-resistance genes; the third for species-specific genes which the sequences are unique for different plant species. To ensure the reliability of this method, different kinds of positive and negative controls were used in DNA microarray. Commercial GM soybean, maize, rapeseed and cotton were identified by means of this method and further confirmed by PCR analysis and sequencing. The results indicate that this method discriminates between the GMOs very quickly and in a cost-saving and more time efficient way. It can detect more than 95%of currently commercial GMO plants and the limits of detection are 0.5%for soybean and 1%for maize. For the second type, an event-specific detection strategy based on the unique and specific integration junction sequences between the host plant genome DNA and the integrated gene is being developed for its high specificity using multiplex-PCR together with oligonucleotide microarray. Commercial GM soybean (GTS 40-3-2), six GM maize events (MON810, MON863, Bt176, Bt11, GA21, and T25) were detected by this method. The results indicate that it is a suitable method for the identification of these GM soybean and maizes. This method is proved to be a new method for routine analysis of GMOs.这里还有个网站有N多!自己慢慢看吧!只能帮助你到这里了。刘冰制作
MrStoneLiu
外文翻译要求:(1)选定外文文献后先给指导老师看,得到老师的确认通过后方可翻译。(2)选择外文翻译时一定选择外国作者写的文章,可从学校中知网或者外文数据库下载。(3)外文翻译字数要求3000字以上,从外文文章起始处开始翻译,不允许从文章中间部分开始翻译,翻译必须结束于文章的一个大段落。
烽火馋眠
转基因技术与传统技术的关系 自从人类耕种作物以来,我们的祖先就从未停止过作物的遗传改良。过去的几千年里农作物改良的方式主要是对自然突变产生的优良基因和重组体的选择和利用,通过随机和自然的方式来积累优良基因。遗传学创立后近百年的动植物育种则是采用人工杂交的方法,进行优良基因的重组和外源基因的导入而实现遗传改良。 因此,转基因技术与传统技术是一脉相承的,其本质都是通过获得优良基因进行遗传改良。但在基因转移的范围和效率上,转基因技术与传统育种技术有两点重要区别。第一,传统技术一般只能在生物种内个体间实现基因转移,而转基因技术所转移的基因则不受生物体间亲缘关系的限制。第二,传统的杂交和选择技术一般是在生物个体水平上进行,操作对象是整个基因组,所转移的是大量的基因,不可能准确地对某个基因进行操作和选择,对后代的表现预见性较差。而转基因技术所操作和转移的一般是经过明确定义的基因,功能清楚,后代表现可准确预期。因此,转基因技术是对传统技术的发展和补充。将两者紧密结合,可相得益彰,大大地提高动植物品种改良的效率。 下面分别对转基因动物和转基因植物来进行描述。Transgenic technology and the relationship between the traditional technology Ever since mankind has been cultivated crops, our ancestors would have never stopped the genetic improvement of crops. Over the past several thousand years the way crop improvement is mainly produced by natural mutation of genes and recombinant excellent selection and use, through the random and natural way to accumulate good genes. Genetics, nearly a hundred years after its founding breeding of plants and animals is the use of artificial hybridization method for the fine and exogenous recombinant genes into genetic improvement achieved. Thus, transgenic technology and conventional technology is the same strain, and its nature through genetic improvement of access to good genes. However, the scope and efficiency of gene transfer, the transgenic technology and conventional breeding techniques There are two important differences. First, the traditional techniques usually only between individuals within a species to achieve gene transfer, while the transgenic technology transfer genes between organisms is not kinship restrictions. Second, the conventional hybridization and selection techniques are generally carried out in the biological individual level, the operation targeted at the whole genome, the diversion of a large number of genes, some genes can not be precisely right to operate and selection, the performance of future generations predictable is poor. The transgenic technology operations and the transfer of a clear definition of the general is the result of gene, function well, and their offspring can accurately forecast the performance of. Thus, transgenic technology is the development of traditional technologies and additions. Closely integrate the two can complement each other greatly enhance the efficiency of plant and animal species improvement. The following were genetically modified animals and transgenic plants to be described.
天棚元帅
毕业论文外文翻译:将外文参考文献翻译成中文版本。
翻译要求:
1、选定外文文献后先给指导老师看,得到老师的确认通过后方可翻译。
2、选择外文翻译时一定选择外国作者写的文章,可从学校中知网或者外文数据库下载。
3、外文翻译字数要求3000字以上,从外文文章起始处开始翻译,不允许从文章中间部分开始翻译,翻译必须结束于文章的一个大段落。
参考文献是在学术研究过程中,对某一著作或论文的整体的参考或借鉴。征引过的文献在注释中已注明,不再出现于文后参考文献中。外文参考文献就是指论文是引用的文献原文是国外的,并非中国的。
原文就是指原作品,原件,即作者所写作品所用的语言。如莎士比亚的《罗密欧与朱丽叶》原文是英语。
译文就是翻译过来的文字,如在中国也可以找到莎士比亚《罗密欧与朱丽叶》的中文版本,这个中文版本就称为译文。
主要标准
翻译是语际交流过程中沟通不同语言的桥梁。一般来说,翻译的标准主要有两条:忠实和通顺。
忠实
是指忠实于原文所要传递的信息,也就是说,把原文的信息完整并且准确地表达出来,使译文读者得到的信息与原文读者得到的信息大致相同。
通顺
是指译文规范、明白易懂,没有文理不通、结构混乱、逻辑不清的现象。
实践产生理论,欧美许多国家的翻译理论是五花八门的。从大的方面来看,可以分为两大派:一派是翻译可能论,一派是翻译不可能论。其实,完完全全百分之百的可能是没有的,完完全全百分之百的不可能也是没有的。
世界上一切翻译活动都是在这两个极端之间进行的。欧洲许多著名的人物,比如马丁·路德、M.阿诺德、F.W.纽曼、J.B.波斯特加特、H.白洛克、Fr.R.诺克斯、V.那巴可夫等等,都对翻译提出了自己的理论。据《开塞尔世界文学百科全书》的意见,这些理论中有些是刚愎自用的。
城市里的暑气随着处暑的临近也渐渐褪去 秋天,房车出行最佳季节之一 小U也正在加快步伐为你们生产优质的旅行线路 秋季户外出行,不如先给自己选套美美的装
一开始,我见周围的人都在使用这个网络工具,但是我并不了解大家口中的微信到底是什么?所以在一次偶然的机会下,我也去申请了一个帐号,慢慢的去了解微信风靡的原因,结果
电大毕业论文的写作格式、流程与写作技巧 广义来说,凡属论述科学技术内容的作品,都称作科学著述,如原始论著(论文)、简报、综合报告、进展报告、文献综述、述评、专著
这个可真说不好,很多时候你写了不给你钱,结算周期而且很长,有时候都一个月后结算,说什么论文通过后结算,很多都是幌子。先付定金的这种还可能是真的,交稿付款80%,
日本 文化 又是历代日本人在湿润的环境中以顽强的忍耐力和精神,从事水稻栽培所形成的对植物有着特别感情的海洋文化。下文是我为大家整理的关于日本文化 毕业