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Different type idioplasm resources paddy rice adult plant character and paddy rice quality character overall outlineThe birth characteristic, adult plant shape, ear of character of idioplasm resources agronomic characters have the extremely remarkable difference, like weight of a thousand seeds change in 19.67-40.9g, in 18 kind of hull color by brown yellow variety most, in 9 kind of awn colors are most by the achromatic color.

不同类型种质资源水稻植株性状及稻米品质性状的总体概述种质资源水稻的生育特性、植株形态、穗部性状等农艺性状均具有极显著的差异性,如千粒重变化在19.67-40.9g,18种颖壳色中以褐斑黄色样本数最多,9种稃尖色中以无色最多。

During the postgenomics era the information about genomic sequence and gene functions provides a new foundation for evolutionary biology and ecology As the first whole-genome sequenced plant Arabidopsis thaliana and its wild relatives have played a critical role in understanding the evolution of genomics and speciation Both A halleri and A lyrata are closely related to the model species A thaliana A halleri ssp gemmifera occurs in northeastern China Japan and Taiwan; while its sister A halleri ssp halleri is mainly distributed in Europe Geographical barriers such as Tienshan Mountain Range isolate these intraspecific sisters Likewise A lyrata ssp kamchatica and ssp lyrata occur in East Asia and North America respectively Such distribution patterns seem to be consistent with allopartic speciation The comparison between ancestral and extant polymorphism by multilocus can be informative about the population genetics of speciation In this study we collected and analyzed DNA sequences of 98 genes from four wild relatives of A thaliana A halleri ssp gemmifera A halleri ssp halleri A lyrata ssp kamchatica and A lyrata ssp lyrata The ancestral states of these four species were compared to each other in terms of level of genetic variation However the ancestral species at the time of speciation were substantially more polymorphic than the extant geographical populations The observations are not fully compatible with speciation by strict allopatry At some species pairs parapatric speciation seems more reasonable in speciation of Arabidopsis The 98 gene sequences are also used for the congruence test between gene genealogy and species phylogeny Only 28 genes support the species phylogeny but there are 23 genes supports another major genealogy { lyrata} thaliana Based on the phylogenetic position change of A lyrata ssp kamchatica and Ks value for each species pair suggested the recent directional gene flow between A halleri ssp gemmifera and A lyrata ssp kamchatica

阿拉伯芥是第一个完成基因体定序的开花植物,其基因体资讯提供植物学研究的重要依据;在解析阿拉伯芥属物种的亲缘关系以及种化机制等重要的演化议题时,阿拉伯芥近缘的野生物种自然成了不可或缺的关键;跟阿拉伯芥近缘的物种包括A halleri及A lyrata,其中A halleri ssp gemmifera主要分布於中国东北、日本以及台湾,与近缘的A halleri ssp halleri其分布於欧洲隔著天山及大陆的障蔽,而A lyrata ssp kamchatica主要分布於东北亚及台湾,与分布於北美五大湖的A lyrata ssp lyrata被北极圈所分隔,这样的分布模式暗示异域种化的可能。藉由多基因分析比较祖先物种与现生物种遗传歧异度的相关可提供讯息探讨种化时期的族群遗传结构,本研究针对A halleri ssp gemmifera、A halleri ssp halleri及A lyrata ssp kamchatica、A lyrata ssp lyrata四个物种,两对互为亚种的姊妹群,以阿拉伯芥为外群进行研究,在四个物种完成98个同源基因的分子序列,利用套装软体MCMCcoal来估算祖先物种的遗传变异,亦估算现生物种的核苷酸歧异度,观察到?多物种配对中祖先物种遗传多型性大於现生物种DNA歧异度,显示异域种化模型并无法完全解释阿拉伯芥属物种的种化模式,在某些物种配对间邻域种化模式应比异域种化更为可能;在基因树与物种树的比较,98个基因片段的亲缘模式只有28个是与已知物种树一致的,有23个基因其树状图支持{ lyrata} thaliana的型式,藉由kamchatica位置的变化以及估算各物种配对间的平均同义置换率,推测在A halleri ssp gemmifera与A lyrata ssp kamchatica间具有近代的单方向基因交流。

In present review, focusing on the low-copy nuclear genes, we summarize the appli-cation of these genes in the phylogenetic reconstruction of allopolyploid plants and bring forward some critical issues in this field.

以低拷贝核基因为主线,概述了其在多倍体植物系统发生中的应用和相关注意事项,并对其在多倍体植物中的表达变化及其分子机制进行了探讨,系统地介绍了国际上相关领域的研究成果和最新动向。

The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中,常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失,因此,本文提出了新的有益思想,即在保留一定相关性的基础上进行辨识:将输出向量ΔW与环境函数矩阵S构成增广矩阵A,然后采用"比定阶行列式"来剔除相关向量的方法,这样既可以尽可能多地保留了对落点影响大的强相关参数,又可以对落点影响小的强相关参数给予剔除;在参数估计中,改进了特征根估计中特征根和特征向量的筛选方法,提出"近零"准则,从而大大提高了参数估计的精度;再者,鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的,因此,本文又深入分析了造成天地模型不一致的原因,提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验;最后,鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响,因此本文深入地分析了SINS制导工具误差系数与外界环境的关系,提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

But ECT technology has the following characteristics: 1 the measured capacitance and its change induced by the measured material concentration variation are very small, but the stray capacitances of co-axial screening cable and CMOS switches are relative very large, so the capacitance detecting is easily affected by the stray capacitances, 2 the electric fields in the sensors detecting region is affected by the permittivity distribution, non-uniformity of the space responsive sensitivity is very high, and the image reconstruction is undetermined.

但由于ECT技术中,首先所检测的微电容量及其因物流相含率的变化所引起的变化量很小,而由相关的连接同轴屏蔽电缆与切换CMOS开关所引入的杂散电容远远大于测量电容,微电容的测量容易受杂散电容等的影响;其次,多电极电容传感器测量区内的电场受介质分布的影响,且测量区内的空间响应灵敏度极不均衡,其影响图像重建的不确定性;其三,ECT中的图像重建,由于其是一个欠定问题的求解,在迭代求解方法中,迭代的初值影响迭代过程收敛到近似解的速度;其四,对于气/固两相流应用而言,由于ECT系统在线标定的难以实现,管壁磨损等因素的影响制约该技术应用于生产工艺中气/固两相流的长期连续检测。

Membership card making binding is a device, process complex multiplication, materials and the machining process changes; the device context, there are dozens of models, the form has more than 100 species of interreaction production line, nearly 10, and each line has a different model and in various types of work between the little diferrences plant.

会员卡制作后装订是一个设备繁乱、工艺复杂、材料品种多、变化大的加工工序;就设备情况看有几十种,型号、形式有100多个,联动生产线种类有近10条,且每一条线都有不同的型号和形式,工种之间的单机设备几乎没有共性。

In conclusion, the lag phase of Streptococcus thermophilus was shorten in the eutrophy culture medium, and the time achieving the culminated point of logarithmic phase was shorted also, at the same time, the stationary phase lengthened. After secondary culture, Streptococcus thermophilus reached directly the log phase hardly through the lag phase, and then quickly reached the decline phase. There were more relations of the metabolic regalities of the three kinds of nutritive substances with the super-concentrated incubation process of Streptococcus thermophilus: the more the number of the bacteria, the quicker the metaboling, while the fewer, the slower the metabolism. Moreover, there apparently existed morphologic changes in this course, and there maybe existed the apoptosis, which correlated with bacteria propagation and acid producing. With the culture time postponed, the nutritive substances in the culture medium lacked also, and the morphologic change and apoptosis appeared more obviously.

结果表明,嗜热链球菌在营养丰富的培养基中的生长延滞期缩短,到达对数生长顶点的时间变短,稳定期的时间延长,当经过二次培养后,嗜热链球菌几乎不经过延滞期直接到达对数期,平稳期持续的时间较短,很快到达衰亡期;嗜热链球菌在超浓缩培养过程中三大营养物质的代谢规律也同它的培养过程有很大的关系,菌数多,其代谢旺盛,菌数降低其代谢速度减慢;嗜热链球菌在超浓缩培养过程中存在着明显的菌体形态变化,并可能存在着细胞凋亡,与菌体增殖和产酸规律密切相关,随着培养时间延长,培养基中营养物质变得贫乏,菌体形态变化和细胞凋亡的情况愈加明显。

First of all , it is seen in Zhang Wei"s long writing that continuous changes occurs with the following era contexts which is shown. First, the gradual desalinization of " earth image " on the space," earth " is not only a creation in Zhang Wei"s novel, but the main source of the poesy of its works. It declines after " September fable ", not only indicating Zhang Wei "s decay of poesy of the novel, but also reflecting the disobeyed pross of light appear contemporary China social urbanization and common customs to . Second, the change of " writing subject projection " in the spiritual meaning, Its characteristic displayed by the reduction of image of spokesman as write thought representation .and on the other side represent" person who want more that resist actively " which also shows contemporary intellectual predicament and adjustment of value. Third, in " changeable and separate characteristics in the stylistics ",It changes " epic body " of" Ancient ship "," body not mythical " to " September fable "," pour out body " of" Bai Hui "" Family "," the discipline spreads the body "of Book of other provinces"," lie body " of" Can not recall the hollyhock ". Its constant changes persuing of recreation and sports, has entered into the different book mode and narration of different class gradually too.

首先,张炜的长篇写作中可以看出一种跟随时代语境而不断发生的变化,这表现在:一是空间上的"大地意象"的渐趋淡化,"大地"不但是张炜小说中的一个创造,而且也是其作品的诗意的主要源泉,它在《九月寓言》之后的衰退,不但表明了张炜小说中诗意的衰减,而同时也反照出当代中国社会城市化和世俗化进程的不可违拗;二是精神意义上的"写作主体投影"的变化,其特征主要表现为作为作家思想代言者的"正面的知识者"形象的弱化,代表其另一面的"积极反抗的多欲者"的凸显,这也显示了当代知识分子价值的困境与调整;三是在"文体上的多变与另类化",由《古船》的"史诗体",到《九月寓言》的"神话体",再到《柏慧》、《家族》的"倾诉体",《外省书》的"纪传体",《能不忆蜀葵》的"诳语体",其文体不断求变,也逐渐走入了异书模式和另类叙述。

In this paper the key points discussed were that, under the condition of a sharp hypsography of desert areas of Ordos basin, we used some new geophysical methods in the investigation of surface structure to obtain high accurate surface structure data and provide reliable scientific foundation for data acquisition and process; we dealt with the optimum coupling of surface geophones and the digital realization technique in desert areas, dug into a method of high frequency compensation according to attenuations by absorption near surface, adopted data processing and correction technique, solved high frequency attenuation and geophone coupling, eliminated the influences of sharply transverse fluctuation of hypsography in desert area on the seismic data, enhanced the fidelity and SNR of seismic section, and finally picked up more geologic information on the seismic profile and improved the precision of the lateral prediction for the reservoir beds.

本文旨在研究鄂尔多斯盆地沙漠区地表变化比较大的情况下,在表层结构调查中通过应用一些地球物理新方法,以获取高精度的表层结构数据,为资料采集和数据处理提供更科学的依据;研究在沙漠区地表检波器最佳耦合的方式与数字实现技术,研究通过近地表的吸收衰减规律进行高频补偿的方法,采用数据处理校正技术,解决高频吸收及检波器耦合,消除沙漠区表层横向剧烈变化对地震资料的影响,提高地震剖面的保真度和信噪比,从而使更多的地质信息能够从地震剖面中反映出来,提高储层横向预测的精度。

No matter where = wherever do whatever you want stay where there is water 语法:语法被动语态 Unit 10 know of/ about in danger lead to act as take turns doing sth get started keep…from……… take sb on a tour of…… die out live a better life take measures for different reasons be used to the environment use…for… be used to do used to do adapt to the change learn more about create more space for make a big difference make no difference devote…to……… at present set free live in the wild

依赖/靠……相信…………与……不同生活方式使得赚钱有可能不仅仅是电话把……用作……上网花时间或金钱做某事有必要做某事不论哪里做任何你想做的事呆在有水的地方第十单元听说过,知道有在危险中,病危通向,导致充当,担任轮流做某事开始阻止/不使…做…带领某人参观…灭绝生活得更好采取措施由于不同的原因习惯于这种环境用……来…………被用来做……过去常常适应变化对…了解得更多为…开辟更多的空间有很大影响/关系没有区别,没关系献身于…专论于…现在,目前释放生活在自然环境下 1。

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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。