同向体

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。

Using DC and AC poling methods, three groups of polarized PZT/P 70/30composites have been prepared by poling only the ceramic phase(1), both ceramic and polymerphases in the same(2) and opposite(3) directions. Piezoelectric coefficients of group 1 compositesincrease as the PZT content increasing, while for group 2 composites, the piezoelectric coefficientschange the sign with increasing PZT content because piezoelectricity of copolymer is increasinglycompensated by that of PZT, and PZT content for zero-〓 isn't that for zero-〓. The experimentdata of both group 1 and 2 composites agree well with EMT-Shin model.

对复合材料的压电性能：只极化PZT粒子相的复合材料的压电系数随陶瓷分数的增大而增大，PZT粒子相与共聚物基体同向极化的复合材料的压电系数由于两相效应的部分抵消，随陶瓷含量的增大，发生符号的改变，且〓和〓零点不重合，它们与EMT-Shin模型都符合较好；而两相反向极化的复合材料的压电系数由于AC反向极化会导致陶瓷相极化程度的下降，导致实验值和理论预期偏差较大，尤其在PZT粒子高含量区。

As a result of tube body's revolving and the steel ball movement, the material to the discharge end proliferation, from leaves the material the midheaven journal to discharge finally gradually, mainly by the round column casing body, the backing, various warehouses board main axle altar, the charging device, the reduction gear, actuates the electrical machinery, the electrically controlled cabinet and so on composes, the company obtains the outstanding enterprise to reward many times with the heavy contract defends the credit enterprise, the post-sale service Advanced unit, is Shicheng County's Key enterprise, the metallurgy profession dressing machinery's Shareholding system, Our company and the national various Scientific research Unit carries on the close exchange cooperation.

由于筒体的旋转和钢球的运动，物料逐渐向出料端扩散，最后从出料的中空轴颈排出，主要由圆柱筒体，衬板，各仓板主轴承座，进料装置，减速器，驱动电机，电控柜等组成，公司多次获得优秀企业奖和重合同守信用企业，售后服务先进单位，是石城县的重点企业，冶金行业选矿机械的骨干企业，我公司与全国各科研单位进行密切交流合作。

As a result of tube body''s revolvingthe steel ball movement, the material to the discharge end proliferation, from leaves the material the midheaven journal to discharge finally gradually, mainly by the round column casing body, the backing, various warehouses board main axle altar, the charging device, the reduction gear, actuates the electrical machinery, the electrically controlled cabinetso on composes, the company obtains the outstanding enterprise to reward many times with the heavy contract defends the credit enterprise, the post-sale service Advanced unit, is Shicheng County''s Key enterprise, the metallurgy profession dressing machinery''s Shareholding system, Our companythe national various Scientific research Unit carries on the close exchange cooperation.

由于筒体的旋转和钢球的运动，物料逐渐向出料端扩散，最后从出料的中空轴颈排出，主要由圆柱筒体，衬板，各仓板主轴承座，进料装置，减速器，驱动电机，电控柜等组成，公司多次获得优秀企业奖和重合同守信用企业，售后服务先进单位，是石城县的重点企业，冶金行业选矿机械的骨干企业，我公司与全国各科研单位进行密切交流合作。

According to the relationship of Yanshan epoch granites and NE ductile shear zones of main structure of this region, and regional isotope chronology data, the granitoids of this region are divided:(1) pretectonic, qnartze monzonite -granites assemblage, representative plutons: Shigujian, Erwan, Egongbao, and Yunfengding;(2) syntectonic granite assemblage, representative plutons: Tiantangzhai, and Jiuzihe;(3) posttectonic granite assemblage, representative plutons: Daguping and Bijiashan. These assemblages differ from precollision , syncollision and postcollision intrusive assemblages.

根据燕山期花岗岩与区内主体构造NE向韧性剪切带的关系，并结合区域同位素年代学资料，将区内花岗岩分为：(1)构造前石英二长岩—花岗岩组合，代表性岩体有石鼓尖、二湾、鹅公包、云峰顶；(2)同构造花岗岩组合，代表性岩体有天堂寨、九资河；(3)构造后花岗岩组合，代表性岩体有大孤坪、笔架山，这里的构造前、同构造和构造后侵入岩组合不同于碰撞前、同碰撞和碰撞后侵入岩组合。

To clone human sodium/iodide symporter genes, and study the function expression of hNIS in non-thyroid tumor cell.

克隆人的钠／碘同向转运体基因可编码序列，并研究其在非甲状腺肿瘤细胞内的功能表达。

Objective To demonstrate the feasibility of thyroid gene therapy by using a adeno-associated virus vector to deliver the sodium/iodide symporter gene into the thyroid tumor cells.

目的探讨钠碘同向转运体基因介导的甲状腺癌基因治疗的可行性。

To analyze the pseudo phenomena caused by migration velocity error, the paper firstly studied the depth error between post-stack migration and prestack migration caused by same velocity error, and found the depth error was only relative to velocity error and had no direct matter with methods of depth migration (post-stack migration or prestack migration). Then the paper did numerical simulation of a complex lenticular body model with wave-equation modeling and migration, and found that the velocity error could not only induce depth error, but also could change the modality of construction and the event of subjacent layers. Furthermore, it could change the frequency of reflective event. They are the pseudo phenomena caused by migration.

从分析偏移速度误差带来的各种假象出发，本文首先对比分析了速度误差对叠后深度偏移和叠前深度偏移的影响，发现偏移剖面的深度误差仅与速度模型的误差有关系，与具体的偏移方法没有直接的关系；然后对一个复杂的透镜体模型进行了波动方程叠后正演和偏移计算，详细地讨论了不同的速度误差带来的各种假象，发现速度误差不仅会带来深度误差，而且会造成构造体的形态变化，下覆地层同向轴的扭曲，还可能引起地层同向轴的频率发生变化，给资料解释带来一定的假象。

The delay time of vertical coseismic deformation have positive linear relationship with ep...

断层体垂直向同震形变延迟时间与震中距线性正相关，发生地震同震形变的响应速度约为5.5km/s，反映了在上层花岗岩地层中面波的传播速度；同震位移最大振幅和震中距的对数、震级之间具有明显线性关系，震级越大，同震位移的最大振幅越大；地震震级是断层体垂直同震形变振动持续时间的主要影响因素，震级越大，同震形变振动持续时间越长。

At the same time, has advanced with the twin-screw extruder, high-speed mixer, such as production equipment, has injection molding machines, infrared spectrometer, electronic universal tensile tester, melt flow rate meter, Shore hardness tester, anti-aging testing machine , weathering testing machine, such as laboratory equipment.

同时拥有先进的同向双螺杆挤出机、高速混合机等生产设备，有注塑机、红外光谱仪、电子万能拉力试验机、熔体流动速率测定仪、邵氏硬度计、耐老化试验机、耐候试验机等实验设备。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。