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METHODS: Total RNA was isolated from hepatocellular carcinoma cell line HepG2. Subsequently, a 1kb fragment of HCCR2 encoding region was amplified by RTPCR and cloned into Promega TEasy vector. After confirmed by DNA sequencing, the fulllength encoding region of HCCR2 was amplified by PCR and cloned into pIRES2EGFP. The recombinant eukaryotic expression vector was confimed by DNA sequencing.

从人肝癌细胞株HepG2提取RNA,利用RTPCR方法,先克隆出一包括HCCR2编码区的长约1 kb的片段,并将其与T载体连接并转化,测证实无误后,以HCCR2/T载体为模板,再通过PCR克隆出HCCR2的编码区列,将其连接到pIRES2EGFP真核表达载体,并通过测获得证实。

The generic data matrix and database of adult morphology of Tenthredinoidea were set up. The polarization of each morphologic character was concluded based on the evolutionary morphology, the inner group comparision and fossils analysis. The generic cladogram of Tenthredinoidea was calculated by PC586 computer using Hennig86 program. A new classification system for Tenthredinoidea was proposed based on the analysis of the cladogram. The tribal cladistic biogeography of the superfamily was analyzed using Diva program.

以成虫外部形态为主体建立和完善了叶蜂总科属级形态特征矩阵和数据库;采用进化形态学—内群比较—化石比较分析方法推断了各个特征的演化极性;应用Hennig86程以427个叶蜂属为终端分析单元,在PC586计算机上运算,得出了叶蜂总科属间关系支图,解析支图,建立形式分类,提出了新的叶蜂总科分类系统。

Knowledge organisation is developed on the basis of syst-ems of classifications and thesauri in library and informationscienceand is affecting such fields as artificial intellige-nce,expert system,hypermedia,terminology,education,etc.

现在,人们普遍认识到知识整的必要性。在古代,图书馆员和哲学家被排斥在知识整领域之外。后来,百科全书的作者和教育家开始从事这项活动。

Nine medium compositions were used to study their effect on I40 using Plackett-Burman design. The production of biomass for I40 was affected in order of yeast extract, tryptone, glucose, and production of protease affected in order of feather, tryptone and yeast extract.

最是化条件探讨方面,於基础培养基中分别添加九种单因子,以PB design分析,结果发现对於I40生长影响较为显著的因子依为:yeast extract、tryptone、glucose,而对於该菌生产蛋白酶产量影响较为显著的因子依为:feather、tryptone、yeast extract。

Basic operators of color image morphology are established.The result of the experiment demonstrates that the color vector order has good property.The algorithm of color image morphology based on this order can better keep the peripheral information and hue of the image and has the strong point of unnecessity of exchanging between different color spaces.

实验结果表明提出的颜色向量性能良好,建立在该向量上的彩色图像形态学算法能够较好的保持图像的边缘信息和色调,并且亮度均匀,与原图像相比对比度均匀增强,重构开算法的实验结果比原文献中方法有了较大的改进;具有不需要在不同的颜色空间之间转换的优点。

In degraded PSM matching classification, errors modification method of degraded PSM is presented and the matching tensor of every canonical scattering centers is given. In Chapter 4, the theory of wideband millimeter-wave radar target identification is introduced. It is indicated that, for HR radar target identification, description of temoral relations among features and pattern recogntion adaptive to variation of target angles are of key importance. A rule-based pattern recogniton method of sequential reasoning is proposed, which uses a series of rules to describe relations of features variation caused by target angles variation and has the advantages of adaption to unrandom variation and false probability control in classification over traditional statistical pattern recognitiop method. Feature extraction is crucial step in target identification. In range profiles identification application, features are extracted by means of range domain pre-processing algorithm, spacial and amplitude visual computation directly from range profiles and transform algorithm based on range profiles. Visual or transformed features are either sufficiently convinced or necessarily convinced and both of them are effective and robust to range profiles identification.

在第四章,首先对宽带毫米波体制背景下目标识别方法的一些特点进行了阐述并指出,在毫米波雷达目标识别中,特征之间动态关系的描述以及能适应目标姿态角变化的模式识别方法的研究乃是要解决的关键问题;进而提出了一种基于规则库的贯推理模式识别新方法,在这种方法的研究中,主要包括贯推理规则库的规则排列与特征选用顺以及规则库的收敛等问题;这种方法克服了传统的统计模式识别方法特征利用效率不高、难以适应特征值的非随机性变化的缺点,把姿态角变化所引起的特征的变化用一系列规则加以表示,其优点是能适应特征值的非随机性动态变化,并能控制分类过程中的差错概率α;特征抽取是目标识别中的关键步骤,在基于目标距离像的特征抽取方法研究中,提出了距离空间域的预处理算法、距离空间域与幅度域的直观特征抽取方法以及基于目标距离像变换分析的特征抽取方法。

Na-K-Exchanging ATPase is a universal cell membrane protein in higher eukaryotic cells which mediates the anti-concentration gradient exchange of intracellular Na+ for extracellular K+. It plays essential metabolic roles such as maintaining sodium and potassium ion gradients across the plasma membrane. The targeted sequences were amplified by PCR to determine the genome structure of the hithertofore unsequenced portion of the alpha 1 subunit of the human Na-KExchanging ATPase gene which encodes 80-130 aa of its extracellular domain using two different templates, human genomic DNA and a human muscle cDNA library. The PCR products were analyzed by restriction endonuclease digestion and then cloned into a plasmid vector for chemiluminescence sequencing and further analysis.

Na-K-Exchanging ATPase是一种普遍存在于高等生物体内的细胞膜蛋白,主要参与介导K+和Na+在细胞内外之间的逆浓度梯度的转运,并维持一定细胞内外的离子梯度,我们采用聚合酶链式反应方法分别以人基因组DNA及cDNA文库为模板对人Na-K-Exchanging ATPaseα1亚单位基因胞外区约80-130位氨基酸编码列进行扩增,限制性酶切分析扩增产物,并进行荧光测,对测结果进行同源性分析及剪接位点的搜索并对得到的核苷酸列进行进一步的分析,发现人基因组DNA和cDNA经过扩增后分别得到833bp和195bp两种不同大小的片段Fg,Fc。

The experimental results show the validness of the mechanism analyses.2. According to the generation mechanism of the leak acoustic signal, the characteristics of the leak acoustic signal are investigated. The auto correlation technology is adopted to descript the leak signal characteristics due to the ability to analyze the coherence of time series. A new procedure to identify the leak acoustic signal from the disturbed noises is proposed based on the conjunction of correlation and approximate entropy algorithm.3. The principle and application in leak location of the correlation and the adaptive filter techniques are introduced. The problems of the traditional leak location methods are analyzed.4. In order to establish the leak detection signal model, the leak acoustic propagation characteristics are investigated experimentally.

从泄漏声产生机理出发,分析了管道泄漏处湍流拟结构与空泡间相互作用的机理,认为在该机理作用下,泄漏声信号产生过程具有&不可重复&的特征;由于相关函数具有分析时间列拟结构的能力,且近似熵从统计的角度区别时间过程的复杂性,因此,提出将信号相关分析和近似熵理论相结合的方法,提取泄漏声信号&不可重复&的特征,辨识管道泄漏故障发生;在实际检测现场,由于各种管内和管外固定声源噪声(如阀门噪声、工地施工噪声等)常导致泄漏误判和漏点定位错误,重点分析了管内固定噪声源的产生机理和特征,为复杂干扰环境下的泄漏辨识提供理论支持。

The fragement of 261 bp was 86 percent the same as a part of the original sequence of Vulgare HortI gene, and the 105 bp was 96 percent compared with a part of the triticum monococcum phosphatidylserine decarboxylase gene. Both of them included an open reading frame.

比较261 bp片段与大麦属Vulgare HotrI基因部分列同源性达86%,105bp片段与一粒小麦磷脂酰丝氨酸脱羧酶基因部分列同源性高达96%。2个测片段均包含开放阅读框列。

The distribution database and the geographic cladograms of the superfamily was set up. The distribution pattern of the superfamily was concluded and the origination centre of the superfamily was also discussed. We deduced that the South Asia is probably the origination centre of the superfamily. Two new index for zoogeographic analysis, index of high taxa distribution and the possibility index of the origination of a high taxa, were proposed.

应用Diva 软件研究了叶蜂总科族级支生物地理,建立了地理分布数据库和地理支图,拟合了叶蜂总科现代分布格局,推断出叶蜂总科的起源中心位于东亚南部,提出了两个新的地理分析指数—类元分布指数It和类群起源可能性指数Io。

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推荐网络例句

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特,那个是爱朗。

Articulate the aims, objectives and key aspects of a strategic business plan.

明确的宗旨,目标和重点战略业务计划。